FN ISI Export Format VR 1.0 PT J AU Gervilla, F Sanchez-Anguita, A Acevedo, RD Hach-Ali, PF TI Platinum-group element sulpharsenides and Pd bismuthotellurides in the metamorphosed Ni-Cu deposit at Las Aguilas (Province of San Luis, Argentina) SO MINERALOGICAL MAGAZINE LA English DT Article DE cobaltian hollingworthite; rhodian nickelian cobaltite; Pd bismuthotellurides; Ni-Cu ores; metamorphic reworking; Sierras Pampeanas; Argentina ID FE-AS-S; GROUP MINERALS; PHASE RELATIONS; RATHBUN LAKE; ONTARIO; COMPLEX; SYSTEM; PGE; MINERALIZATION; INTRUSION AB The Las Aguilas Ni-Cu-PGE deposit is associated with a sequence of basic-ultrabasic rocks made up of dunite, harzurgite, norite and amphibolite. These igneous (partially metamorphosed) rocks, and their host granulites, gneisses and migmatites of probable Precambrian age, are highly folded. The sulphide ore, consisting of pyrrhotite, pentlandite and chalcopyrite, occurs in the cores of both antiform and synform structures, within dunite, harzburgite and mainly along shear zones in bronzitite, replacing small mylonitic subgrains. The platinum-group mineral assemblage is dominated by Pd bismuthotellurides (Pt-free merenskyite, palladian bismuthian melonite and michenerite), with minor sperrylite, and PGE-sulpharsenides. The latter often occur as single, zoned crystals frequently showing cores of irarsite; outside these are concentric zones of cobaltian hollingworthite, rhodian nickelian cobaltite and Fe-rich nickelian cobaltite. Mineralogical, textural and chemical evidence indicate that the sperrylite and platinum-group element sulpharsenides were formed during a primary magmatic event associated with the fractionation of a basaltic melt, which was contaminated by the assimilation of metamorphic crustal rocks. PGE sulpharsenides crystallized from As-bearing, residual magmatic liquids that collected PGE and segregated after the crystallization of the monosulfide solid solution. During high-grade metamorphism, sulpharsenides were remobilized as solid crystals in the liquated sulfides suffering partial dissolution and fracturing. On the other hand, there is no evidence of a primary concentration of Pd-bismuthotelluride minerals, and their present spatial distribution is only the consequence of their formation under high-to medium-grade metamorphism, down to temperatures of below 500 degrees C. Pd bismuthotellurides crystallize even in fractures of sulpharsenides, attached to the boundaries of highly dissolved sulpharsenide crystals, and intergrown with molybdenite. C1 Inst Andaluz Ciencias Tierra, Granada 18002, Spain. Univ Granada, CSIC, Dept Mineral & Petrol, Granada 18002, Spain. APLITEG SL, Granada 18007, Spain. CONICET, Ctr Austral Invest Cient, RA-9410 Ushuaia, Tierra Del Fueg, Argentina. Univ Oviedo, Dept Geol, E-33005 Oviedo, Spain. RP Gervilla, F, Inst Andaluz Ciencias Tierra, Avda Fuentenueva S-N, Granada 18002, Spain. NR 34 TC 17 PU MINERALOGICAL SOCIETY PI LONDON PA 41 QUEENS GATE, LONDON, ENGLAND SW7 5HR SN 0026-461X J9 MINER MAG JI Mineral. Mag. PD DEC PY 1997 VL 61 IS 6 BP 861 EP 877 PG 17 SC Mineralogy GA YM369 UT ISI:000071056700009 ER PT J AU Sierra, JC Luna-Villegas, G Buela-Casal, G Fernandez-Guardiola, A TI The assessment of residual effects of a single dose of diazepam on visually-defined EEG patterns SO JOURNAL OF PSYCHOPHARMACOLOGY LA English DT Article DE arousal EEG; diazepam; EEG patterns; residual effects; sex differences; visual analysis ID GENDER AB The aim of this single-blind study was to evaluate the residual effects of a IO-mg dose of diazeparn on cortical activation 11h after oral intake. The electroencephalographic segments (from O-1-O-2) delimited by a sequence of photic stimuli presented every 10 sec during a simple reaction-time task (36 min duration) were arbitrarily classified into nine cerebral patterns (EEGP). EEGP segment classifications were grouped into six peri-stimulus transitions expressed in percentages: alpha-blockade; alpha-persistence; beta-persistence; alpha-induction; activation and deactivation. A sample of 42 young healthy university students (21 females and 21 males) each underwent three counterbalanced experimental conditions (control, placebo and diazepam). Diazepam affected all the subjects, although the women showed a greater number of EEGP transitions which indicated deactivation, than did the men. The results show that this type of visual EEG analysis is a useful technique for detecting the residual effects of benzodiazepines. C1 Univ Granada, Fac Psicol, E-18071 Granada, Spain. Inst Mexicano Psiquiatria, Div Invest Neurociencias, Mexico City, DF, Mexico. RP Sierra, JC, Univ Granada, Fac Psicol, Campus Univ La Cartuja, E-18071 Granada, Spain. NR 24 TC 4 PU SAGE PUBLICATIONS LTD PI LONDON PA 6 BONHILL STREET, LONDON, ENGLAND EC2A 4PU SN 0269-8811 J9 J PSYCHOPHARMACOL JI J. Psychopharmacol. PD DEC PY 1997 VL 11 IS 4 BP 367 EP 372 PG 6 SC Clinical Neurology; Neurosciences; Pharmacology & Pharmacy; Psychiatry GA YN410 UT ISI:000071165900013 ER PT J AU Sanchez-Quevedo, MC Nieto-Albano, OH Garcia, JM de Ferraris, MEG Campos, A TI Electron probe microanalysis of permanent human enamel and dentine. A methodological and quantitative study SO HISTOLOGY AND HISTOPATHOLOGY LA English DT Article DE enamel; dentine; microanalysis; quantitative methods ID X-RAY-MICROANALYSIS; BIOLOGICAL SPECIMENS; GELATINOUS MEMBRANE; HISTOCHEMISTRY AB Sample preparation of dental tissues for quantitative electron microprobe analysis has not been critically examined because of the highly mineralized nature of these structures. The present study was designed to establish the most suitable method for the electron probe quantitative determination of calcium in human permanent enamel and dentine while preserving the morphological features. Comparisons of quantitative data obtained with air-drying and freeze-drying methods showed that calcium in enamel was more accurately measured in specimens prepared with cryopreservation and freeze-drying. No significant differences between the methods tested were found in dentine although cryopreservation and freeze-drying yielded less statistical variability. Moreover this approach did not modify morphological features of interest. We recommend this combination of processing techniques for human permanent teeth not only because it was found the most accurate and least variable in determining calcium concentration, but also because of its potential usefulness in studies of alterations in tooth mineralization. C1 Univ Granada, Fac Med, Dept Histol & Biol Celular, Sch Med & Dent, E-18071 Granada, Spain. Natl Univ Cordoba, Fac Odontol, Catedra Oral Dent Histol & Embryol B, Cordoba, Argentina. RP Campos, A, Univ Granada, Fac Med, Dept Histol & Biol Celular, Sch Med & Dent, E-18071 Granada, Spain. NR 38 TC 9 PU F HERNANDEZ PI MURCIA PA PLAZA FUENSANTA 2-7 C, 30008 MURCIA, SPAIN SN 0213-3911 J9 HISTOL HISTOPATHOL JI Histol. Histopath. PD JAN PY 1998 VL 13 IS 1 BP 109 EP 113 PG 5 SC Cell Biology; Pathology GA YN926 UT ISI:000071222600013 ER PT J AU Ortega, R Tineo, A TI An exclusion principle for periodic competitive systems in three dimensions SO NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS LA English DT Article DE logistic equation; competing species problem; periodic solutions; Exclusion Principle C1 Univ Granada, Dept Matemat Aplicada, E-18071 Granada, Spain. Univ Los Andes, Fac Ciencias, Dept Matemat, Merida 5101, Venezuela. RP Ortega, R, Univ Granada, Dept Matemat Aplicada, E-18071 Granada, Spain. NR 8 TC 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0362-546X J9 NONLINEAR ANAL-THEOR METH APP JI Nonlinear Anal.-Theory Methods Appl. PD MAR PY 1998 VL 31 IS 7 BP 883 EP 893 PG 11 SC Mathematics, Applied; Mathematics GA YQ832 UT ISI:000071427600006 ER PT J AU Oloriz, F Villasenor, AB Gonzalez-Arreola, C TI Factors controlling upper Jurassic ammonite assemblages in north central Mexico SO LETHAIA LA English DT Article DE taphonomy; ammonites; Upper Jurassic; Mexico ID EXAMPLES; SOUTH AB Lower Kimmeridgian to Lower Tithonian (Upper Jurassic) sections studied at Sierra de Palotes (Durango) and Sierra de Catorce (San Luis Potosi), Mexico, show low-energ deposits in which the composition of fossil macroinvertebrate assemblages, including megabenthos, reflects biostratinomic control. Monotonous siltstones provide continuous records of ammonite assemblages and reflect dominant deposition of shells in living areas; meanwhile, discontinues records were forced by episodic post-mort em transportation of shells, which was especially accentuated under storm influence. Rhythmic marly-silty limestones and marls illustrate a fossil record probably determined by minor transgressive-regressive pulses. The major changes in lithofacies are reflected by condensed silty and phosphatic mudstones deposited during significant floodings affecting areas under dominant terrigenous sedimentation. These changes determined more or less significant variations in the composition of fossil assemblages according to their relation to changing ecological conditions. However, shifting ecospaces exhibit no direct relationship to changes in lithofacies. Post-mortem transportation, operating in relation to both marine floodings and changes in the pattern of upper-water currents, was the main biostratinomic factor affecting the areal distribution of ammonite populations. Shell transportation and sedimentation rate controlled preservation and ultimately influenced diversity in recorded ammonite assemblages. The post-mortem behaviour (interpreted from shell structure and preservation), and therefore distribution, of ammonite shells points to shallow-water environments during the Kimmeridgian - Early Tithonian in areas (such as SE Durango and San Luis Potosi) close to the changing boundary between dominant carbonate and terrigenous sedimentation. No reworking affecting ammonite biostratigraphy has been identified in the sections studied. C1 Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. Univ Nacl Autonoma Mexico, Inst Geol, Dept Palaeontol, Mexico City 04510, DF, Mexico. RP Oloriz, F, Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. NR 30 TC 5 PU SCANDINAVIAN UNIVERSITY PRESS PI OSLO PA PO BOX 2959 TOYEN, JOURNAL DIVISION CUSTOMER SERVICE, N-0608 OSLO, NORWAY SN 0024-1164 J9 LETHAIA JI Lethaia PD DEC PY 1997 VL 30 IS 4 BP 337 EP 351 PG 15 SC Paleontology GA YU166 UT ISI:000071688900010 ER PT J AU Gallo, M Bielavska, E Roldan, G Bures, J TI Tetrodotoxin inactivation of the gustatory cortex disrupts the effect of the N-methyl-D-aspartate antagonist ketamine on latent inhibition of conditioned taste aversion in rats SO NEUROSCIENCE LETTERS LA English DT Article DE conditioned taste aversion; latent inhibition; tetrodotoxin; learning; ketamine; rat ID PHENCYCLIDINE; ACQUISITION; AMYGDALA; MEMORY AB The effect of the non-competitive N-methyl-D-aspartate (NMDA) receptor antagonist ketamine on latent inhibition of taste aversion learning was studied in rats. Systemic injections of ketamine (50 mg/kg) applied after each of three preexposures to sodium saccharin (0.1%) disrupted the latent inhibition effect. The blockade was not due to aversive properties of ketamine, because three saccharin-ketamine pairings did not produce saccharin aversion. Moreover, the ketamine-induced blockade of latent inhibition was disrupted by tetrodotoxin injections (10 ng/mu l)-induced reversible inactivation of gustatory cortex, applied after each preexposure. A specific gustatory cortex mediation of the ketamine effect is discussed. (C) 1998 Elsevier Science Ireland Ltd. C1 Univ Granada, Dept Expt Psychol & Physiol Behav, E-18071 Granada, Spain. Acad Sci Czech Republ, Inst Physiol, Prague, Czech Republic. Natl Autonomous Univ Mexico, Fac Med, Mexico City 04510, DF, Mexico. Univ Granada, Inst Neurosci Dr F Oloriz, Granada, Spain. RP Gallo, M, Univ Granada, Dept Expt Psychol & Physiol Behav, Campus Cartuja, E-18071 Granada, Spain. EM mgallo@platon.ugr.es NR 21 TC 13 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0304-3940 J9 NEUROSCI LETT JI Neurosci. Lett. PD JAN 9 PY 1998 VL 240 IS 2 BP 61 EP 64 PG 4 SC Neurosciences GA YU640 UT ISI:000071739000001 ER PT J AU Rosales-Borjas, DM Diaz-Rivadeneyra, J Dona-Leyva, A Zambrano-Villa, SA Mascaro, C Osuna, A Ortiz-Ortiz, L TI Secretory immune response to membrane antigens during Giardia lamblia infection in humans SO INFECTION AND IMMUNITY LA English DT Article ID SERUM; ANTIBODIES; PROTEINS AB The secretory immune response in humans infected with Giardia lamblia was studied by using saliva samples and a membrane rich protein fraction, The membrane fraction, studied by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, showed 24 antigen bands, ranging from 170 to 14 kDa, Saliva samples from giardiasis patients showed a heterogeneous response against the membrane fraction when they were assayed by immunoblotting. Among the antigens recognized by patient saliva samples, those of 170, 105, 92, 66, 32, 29, and 14 kDa stood out, These antigens were not recognized by saliva samples from healthy individuals, They may be of importance in future studies of protection from or diagnosis of G, lamblia infections. C1 Natl Autonomous Univ Mexico, Inst Invest Biomed, Dept Immunol, Mexico City 04510, DF, Mexico. Univ Granada, Inst Biotecnol, Grp Bioquim & Parasitol Mol, Granada, Spain. EMASAGRA, Granada, Spain. Hosp Univ Dr Miguel Oraa, Guanare, Edo Portuguesa, Venezuela. Univ Guadalajara, Ctr Univ Ciencias Exactas & Ingn, Guadalajara 44430, Jalisco, Mexico. RP Ortiz-Ortiz, L, Natl Autonomous Univ Mexico, Inst Invest Biomed, Dept Immunol, Apartado Postal 70228, Mexico City 04510, DF, Mexico. NR 24 TC 6 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 USA SN 0019-9567 J9 INFEC IMMUNITY JI Infect. Immun. PD FEB PY 1998 VL 66 IS 2 BP 756 EP 759 PG 4 SC Immunology; Infectious Diseases GA YU693 UT ISI:000071744800051 ER PT J AU Gonzalez-Martin, G Merino, I Rodriguez-Cabezas, MN Torres, M Nunez, R Osuna, A TI Characterization and trypanocidal activity of nifurtimox-containing and empty nanoparticles of polyethylcyanoacrylates SO JOURNAL OF PHARMACY AND PHARMACOLOGY LA English DT Article ID TRYPANOSOMA-CRUZI; DRUG-CARRIER; POLYALKYLCYANOACRYLATE NANOPARTICLES; LIPOSOMES; FORMS AB The aim of this study was to evaluate the utility of nanoparticles of polyalkylcyanoacrylate as a targeted delivery system for nifurtimox against Trypanosoma cruzi, responsible for Chagas' disease. Ethylcyanoacrylate nanoparticles were prepared by an emulsion polymerization process and formulations containing different concentrations of nifurtimox, polyethylcyanoacrylates and surfactants were investigated and analysed for size and drug content. The nanoparticles obtained were less than 200 nm in size, as measured by electron microscopy and cytometry. The peak percentage of nifurtimox uptake into the nanoparticles was 33.4% for use of 500 mu L polyethylcyanoacrylate, 200 mu L surfactant (Tween 20) and 10 mg nifurtimox in 50 mL polymerization medium. The highest release of nifurtimox from the nanoparticles was 65.4% after 6-h incubation at pH 7.4. In-vitro studies using cultures of T. cruzi epimastigotes revealed considerably increased trypanocidal activity compared with a standard solution of nifurtimox. Studies of cell cultures previously infected with metacyclic forms of the parasite showed that only 2-h treatment with solutions of 0.001% of the nanoparticle suspension reduced parasitism by 87-94% both when the nanoparticles were loaded with nifurtimox and when unloaded. Electron-microscopic examination revealed processes of degeneration and lysis, suggesting apoptotic processes, in intracellular amastigotes and free amastigotes treated with the nanoparticles. It was demonstrated that unloaded nanoparticles, by mechanisms not completely elucidated, have trypanocide activity similar to that of a standard solution of nifurtimox. It is concluded that the nanoparticles loaded with nifurtimox constitutes a good carrier of the drug against T. cruzi. The loaded-nanoparticles significantly increase trypanocidal activity. C1 Catholic Univ Chile, Fac Chem, Dept Pharm, Div Clin Pharm, Santiago, Chile. Catholic Univ Chile, Parasitol Lab, CEDIUC, Fac Med, Santiago, Chile. Univ Granada, Inst Biotechnol, Mol Parasitol Grp, Granada, Spain. RP Gonzalez-Martin, G, Catholic Univ Chile, Fac Chem, Dept Pharm, Div Clin Pharm, Vicuna Mackenna 4860, Santiago, Chile. NR 20 TC 10 PU ROYAL PHARMACEUTICAL SOC GREAT BRITAIN PI LONDON PA 1 LAMBETH HIGH ST, LONDON SE1 7JN, ENGLAND SN 0022-3573 J9 J PHARM PHARMACOL JI J. Pharm. Pharmacol. PD JAN PY 1998 VL 50 IS 1 BP 29 EP 35 PG 7 SC Pharmacology & Pharmacy GA YW766 UT ISI:000071971700004 ER PT J AU Rosales-Borjas, DM Zambrano-Villa, S Elinos, M Kasem, H Osuna, A Mancilla, R Ortiz-Ortiz, L TI Rapid screening test for tuberculosis using a 38-kDa antigen from Mycobacterium tuberculosis SO JOURNAL OF CLINICAL LABORATORY ANALYSIS LA English DT Article DE immunodot; ELISA; diagnosis; acid-fast bacilli; lung infection; serology ID PULMONARY TUBERCULOSIS; PROTEINS; IMMUNODOMINANT; ANTIBODIES; ELISA AB A screening test for the diagnosis of tuberculosis by immunodot (IDt) is described, using an antigen of Mycobacterium tuberculosis, namely, a 38-kDa glycoprotein which has shown great specificity in previous serologic analyses. The test was used to examine 28 sera from patients with lung tuberculosis. Of these, 85% were positive by micro-ELISA and by the IDt test herein described. Central sera from healthy subjects (n=20) gave negative results for ELISA and for IDt, which indicates that the screening test is highly specific. The test is easy to handle and requires no equipment and is therefore particularly useful for field studies. (C) 1998 Wiley-Liss. Inc. C1 Natl Autonomous Univ Mexico, Inst Invest Biomed, Dept Immunol, Mexico City 04510, DF, Mexico. Univ Granada, Inst Biotechnol, Biochem & Mol Parasitol Grp, E-18071 Granada, Spain. Univ Guadalajara, Ctr Engn & Exact Sci, Guadalajara, Jalisco, Mexico. Miguel Oraa Univ Hosp, Guanare, Edo Portuguesa, Venezuela. RP Ortiz-Ortiz, L, Natl Autonomous Univ Mexico, Inst Invest Biomed, Dept Immunol, Apartado Postal 70228, Mexico City 04510, DF, Mexico. NR 19 TC 3 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158-0012 USA SN 0887-8013 J9 J CLIN LAB ANAL JI J. Clin. Lab. Anal. PY 1998 VL 12 IS 2 BP 126 EP 129 PG 4 SC Medical Laboratory Technology GA YZ045 UT ISI:000072214600009 ER PT J AU Garcia-Ruiz, JM Moreno, A Otalora, F Rondon, D Viedma, C Zauscher, F TI Teaching protein crystallisation by the gel acupuncture method SO JOURNAL OF CHEMICAL EDUCATION LA English DT Article ID SINGLE-CRYSTALS C1 Univ Granada, CSIC, Inst Andaluz Ciencias Tierra, Lab Estud Cristalog, Granada 18002, Spain. Univ Complutense Madrid, Fac Geol, Dept Critalog & Mineral, Madrid 28008, Spain. Univ Ind Santander, Inst Quim, Bucaramanga, Colombia. RP Garcia-Ruiz, JM, Univ Granada, CSIC, Inst Andaluz Ciencias Tierra, Lab Estud Cristalog, Av Fuentenueva S-N, Granada 18002, Spain. NR 13 TC 15 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0021-9584 J9 J CHEM EDUC JI J. Chem. Educ. PD APR PY 1998 VL 75 IS 4 BP 442 EP 446 PG 5 SC Chemistry, Multidisciplinary; Education, Scientific Disciplines GA ZB382 UT ISI:000072466500025 ER PT J AU Oloriz, F Villasenor, B Gonzalez-Arreola, C TI Re-evaluation of Procraspedites SPATH, 1930 (Ammonitina) from the Upper Kimmeridgian of Mexico SO BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE LA English DT Article DE ammonitina; Upper Jurassic; Mexico AB Procraspedites from the Mexican Altiplano, studied with precise stratigraphic control, are coeval with the horizons rich in Glockiceras (Coryceras) carinatum [Del Castillo and Aguilera, 1895]. The interval with Procraspedites is dated as Eudoxus Chron (p.p.) of the Submediterranean late Kimmeridgian. The presence of parabolic structures on the inner whorls, followed by double furcations in Procraspedites, indicates Ataxioceratinae. The type species Procraspedites praecursor [Burckhardt. 1906] is interpreted to be the only valid species of this genus in the Americas. C1 Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. Natl Autonomous Univ Mexico, Inst Geol, Dept Paleontol, Mexico City 04510, DF, Mexico. RP Oloriz, F, Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. NR 38 TC 3 PU SOC GEOL FRANCE PI PARIS PA 77 RUE CLAUDE BERNARD, 75005 PARIS, FRANCE SN 0037-9409 J9 BULL SOC GEOL FR JI Bull. Soc. Geol. Fr. PY 1998 VL 169 IS 2 BP 243 EP 254 PG 12 SC Geosciences, Multidisciplinary GA ZH849 UT ISI:000073153700010 ER PT J AU Bauer, E Lallena, AM TI Effective interaction in quasielastic electron scattering calculations SO PHYSICAL REVIEW C LA English DT Article ID NUCLEAR-RESPONSE; TENSOR FORCE; PB-208; STATE AB The transverse nuclear response for quasifree electron scattering is discussed. The analysis is done by comparing different calculations performed in the random-phase approximation and ring approximation frameworks. The importance of the exchange terms in this energy region is investigated and the changes in the nuclear responses due to the modification of the interaction are evaluated. The calculated quasielastic responses show clear indication of their sensibility to the details of the interaction and this imposes the necessity of a more careful study of the role of the different channels of the interaction in this excitation region. [S0556-2813(98)00204-0]. C1 Natl Univ La Plata, Fac Ciencias Exactas, Dept Fis, RA-1900 La Plata, Argentina. Univ Granada, Dept Fis Moderna, E-18071 Granada, Spain. RP Bauer, E, Natl Univ La Plata, Fac Ciencias Exactas, Dept Fis, RA-1900 La Plata, Argentina. NR 22 TC 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD APR PY 1998 VL 57 IS 4 BP 1681 EP 1685 PG 5 SC Physics, Nuclear GA ZK406 UT ISI:000073317700017 ER PT J AU Toledano, M Rosales, JI Aguilera, FS Barranquero, M Crossa, M Osorio, E TI Subcutaneous tissue reactions to dental materials implanted in Wistar rats. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Granada, E-18071 Granada, Spain. Univ Pais Vasco, E-48080 Bilbao, Spain. Univ Cordoba, Cordoba, Argentina. NR 0 TC 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1998 VL 77 SI Sp. Iss. B BP 691 EP 691 PG 1 SC Dentistry, Oral Surgery & Medicine GA ZK546 UT ISI:000073335400475 ER PT J AU Sanchez-Quevedo, MC Nieto-Albano, OH Vasquez, MC Garcia, JM Campos, A TI Electron probe quantitative microanalysis of enamel and dentine mineralization. A comparison of two different procedures for dental tissue preparation. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Granada, Fac Med & Odontol, Dept Histol, E-18071 Granada, Spain. Univ Nacl Cordoba, Fac Odontol, Catedra Histol & Embriol Bucal B, RA-5000 Cordoba, Argentina. NR 0 TC 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1998 VL 77 SI Sp. Iss. B BP 772 EP 772 PG 1 SC Dentistry, Oral Surgery & Medicine GA ZK546 UT ISI:000073335401117 ER PT J AU Signorella, S Santoro, M Palopoli, C Brondino, C Salas-Peregrin, JM Quiroz, M Sala, LF TI Kinetics and mechanism of the oxidation of D-galactono-1,4-lactone by Cr-VI and Cr-V SO POLYHEDRON LA English DT Article DE galactonolactone; chromium; oxidation; kinetics; mechanism; Cr-V; Cr-VI ID PERCHLORIC-ACID; CARCINOGENIC CHROMIUM(VI); OXOCHROMATE(V) COMPLEXES; SIMPLEX ALGORITHM; CHROMIC OXIDATION; L-RHAMNOSE; D-MANNOSE; GLUTATHIONE; REDUCTION; DNA AB The oxidation of D-galactono-1,4-lactone by Cr-VI yields D-lyxonic acid, Carbon dioxide and Cr3+ as final products when an excess of sugar acid over Cr-VI is used. The redox reaction occurs through Cr-VI --> Cr-III and Cr-VI --> Cr-V --> Cr-III paths. The complete rate law for the Cr-VI oxidation reaction is expressed by - d[Cr-VI]/dt = (k(0) + k(H) [H+]) [gal][Cr-VI], where k(0) = (31 +/- 3) x 10(-4) M-1 s(-1) and k(H) = (99 +/- 5) x 10(-4) M-2 s(-1), at 40 degrees C. Cr-V is formed in a rapid step by reaction of the CO2.- radical with Cr-VI. Cr-V reacts with the substrate faster than does Cr-VI. The Cr-V oxidation follows the rate law: -d[Cr-V]/dt = (k(0)' + k(H)' [H+]) [gal], where k(0)' = (15 +/- 2) x 10(-3) M-1 s(-1) and k(H)' = (34 +/- 4) x 10(-3) M-2 S-1, at 40 degrees C. The EPR spectra show that several intermediate [Cr(O)(gala)(2)](-) linkage isomers are formed in rapid pre-equilibria before the redox steps. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim, RA-2000 Rosario, Argentina. Inst Desarrolo Tecnol Ind Quim, RA-3000 Santa Fe, Argentina. Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. RP Sala, LF, Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim, Suipacha 531, RA-2000 Rosario, Argentina. NR 48 TC 22 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0277-5387 J9 POLYHEDRON JI Polyhedron PY 1998 VL 17 IS 16 BP 2739 EP 2749 PG 11 SC Chemistry, Inorganic & Nuclear; Crystallography GA 117FT UT ISI:000075770800021 ER PT J AU Fermin, CD Lychakov, D Campos, A Hara, H Sondag, E Jones, T Jones, S Taylor, M Meza-Ruiz, G Martin, DS TI Otoconia biogenesis, phylogeny, composition and functional attributes SO HISTOLOGY AND HISTOPATHOLOGY LA English DT Review DE otoliths; otoconial membrane; biogenesis; maturation; composition; evolution; gravity; hypergravity; aminoglycosides; evoked potentials ID HAIR CELL REGENERATION; PULSED LINEAR ACCELERATION; HYLA-ARBOREA-JAPONICA; X-RAY-MICROANALYSIS; ACID-CONTAINING GLYCOSAMINOGLYCANS; PERIPHERAL INNERVATION PATTERNS; VESTIBULAR GELATINOUS MEMBRANE; ELECTRON-PROBE MICROANALYSIS; CHICK GALLUS-DOMESTICUS; RED-BELLIED NEWT AB This work consolidates data about these interesting organic crystals of vertebrate inner ears. It addresses 5 aspects of inner ear otoliths not completely understood to date: 1) embryological data that explains the formation of the crystals, 2) the significance of the organic and the inorganic phase of the otolith and the changing patterns of otoconia formation along the evolutionary tree, 3) otoliths contribution for detecting linear acceleration, 4) the effect that altered gravity and aminoglycosides have on the development and adult shape of the crystals, and the evolutionary significance of a changing shape of the crystals from primitive forms (lamprey) to high vertebrate birds and mammals is discussed, 5) functional attributes of the otolithic organs and morphological modifications of the otoliths by physical and chemical insults are presented with an extensive discussion of the most relevant literature published and available to us. C1 Tulane Univ, Sch Med, Dept Pathol & Lab Med, New Orleans, LA 70112 USA. Russian Acad Sci, Inst Evolutionary Physiol & Biochem, St Petersburg, Russia. Univ Granada, Sch Med, Dept Histol & Cell Biol, Granada, Spain. Univ Missouri, Dept Surg, Columbia, MO USA. Univ Amsterdam, Acad Med Ctr, Vestibular Dept, ENT, NL-1105 AZ Amsterdam, Netherlands. Univ Autonoma Madrid, Dept Neurosci, Mexico City, DF, Mexico. RP Fermin, CD, Tulane Univ, Sch Med, Dept Pathol & Lab Med, 1430 Tulane Ave,SL79, New Orleans, LA 70112 USA. EM Fermin@mailhosi.tcs.tulane.edu NR 322 TC 34 PU F HERNANDEZ PI MURCIA PA PLAZA FUENSANTA 2-7 C, 30008 MURCIA, SPAIN SN 0213-3911 J9 HISTOL HISTOPATHOL JI Histol. Histopath. PD OCT PY 1998 VL 13 IS 4 BP 1103 EP 1154 PG 52 SC Cell Biology; Pathology GA 131HZ UT ISI:000076571300022 ER PT J AU Frutos, AA Signorella, S Sala, LF Escandar, GM Peregrin, JMS Moreno, V TI Interaction of divalent metal ions with D-aldonic acids in the solid phase - II. Structural information SO POLYHEDRON LA English DT Article DE D-aldonic acids; metal sugar complexes; divalent metal ions ID D-ALDURONIC ACIDS; AQUEOUS-SOLUTION; COMPLEX-FORMATION; COORDINATION; COPPER(II); NICKEL(II); CU(II) AB Complexes formed between D-glucoheptonate, D-galactonate, D-gulonate and D-ribonate, and several metal ions were obtained in the solid state. Specifically: D-glucoheptonates, Be(C7H13O8). 1/2H(2)O, Mn(C7H13O8)(2). 2H(2)O, Co(C7H13O8)(2). 2H(2)O, Ni(C7H13O8)(2). 2H(2)O, Cu(C7H13O8)(2). 2H(2)O, Pb(C7H13O8)(2); D-galactonates, Mn(C6H11O7)(2). 2H(2)O, Co(C6H11O7)(2). 3H(2)O, Ni(C6H11O7)(2).3H(2)O, Cu(C6H11O7)(2), Pb(C6H11O7)(2); D-gulonates, Co(C6H11O7)(2).H2O, Ni(C6H11O7)(2).2H(2)O, Cu(C6H11O7)(2).2H(2)O; D-ribonates, Mn(C5H9O6)(2), Co(C5H9O6)(2). 2H(2)O, Ni(C5H9O6)(2). 2H(2)O, Cu(C6H11O7)(2). 2H(2)O and Pb(C5H9O6)(2) have been isolated. These metal sugar salts were characterized by elemental analysis, thermogravimetric analysis, magnetic susceptibility measurements, FT-IR, diffuse reflectance and EPR spectroscopies. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim Fis, RA-2000 Rosario, Santa Fe, Argentina. Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim Analit, RA-2000 Rosario, Santa Fe, Argentina. Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. Univ Barcelona, Dept Quim Inorgan, E-08028 Barcelona, Spain. RP Sala, LF, Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim Fis, Suipacha 531, RA-2000 Rosario, Santa Fe, Argentina. NR 21 TC 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0277-5387 J9 POLYHEDRON JI Polyhedron PY 1998 VL 17 IS 19 BP 3371 EP 3378 PG 8 SC Chemistry, Inorganic & Nuclear; Crystallography GA 133VK UT ISI:000076707100016 ER PT J AU Montero, LA Esteva, AM Molina, J Zapardiel, A Hernandez, L Marquez, H Acosta, A TI A theoretical approach to analytical properties of 2,4-diamino-5-phenylthiazole in water solution. Tautomerism and dependence on pH SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID MECHANICAL MOLECULAR-MODELS; SEMIEMPIRICAL METHODS; FREE-ENERGY; STATES; OPTIMIZATION; PARAMETERS; SOLVATION; ALGORITHM; LOCATION AB Theoretical models are used to study pH-dependent equilibria of 2, 4-diamino-5-phenylthiazole tautomer molecules in water. A complete screening of semiempirical SCF multiple minimums of hypersurfaces, corresponding to several solute-water supermolecules, has been made. Multiple minimum hypersurface searching confirms experimental NMR results indicating that the native diamine tautomer predominates in aqueous neutral and basic media. This tautomeric structure, protonated either in N3 and N4, also predominates in aqueous acid media with a minor presence of a protonated monoimine tautomer, in agreement with H-1 NMR results in D2O. High-level ab initio SCF MO of the main structures, where solvent reaction field effects are taken into account with a dielectric constant equivalent to that of water, predict a nonconjugated protonated monoimine tautomer in nonprotic solvents, according to H-1 NMR data in polar aprotic solvents. Calculated electron excitation patterns of hydrated species in water agreed with the experimental UV spectra at different pH values. The quantum chemical procedures for calculating total energies and frontier orbital eigenvalues in local minimum geometries of the relevant supermolecules provide an appropriate model for comparisons of theoretical results with experimental facts in the case of analytical voltametry. The frontier orbital eigenvalues of the most populated minimums discard the appearance of electroanalytic signals in the case of acidic samples because of the similarity of the predicted values for all protonated isomers and water. Experimental measurements confirm the oxidative character of electroanalytic signals. C1 Univ La Habana, Fac Quim, Dept Quim Analit, Lab Quim Computac & Teor, Havana 10400, Cuba. Univ La Habana, Fac Quim, Lab Sintesis Organ, Havana 10400, Cuba. Univ Granada, Inst Biotecnol, Grp Modelizac & Diseno Mol, E-18071 Granada, Spain. Univ Autonoma Madrid, Fac Ciencias, Dept Quim Analit, E-28049 Madrid, Spain. RP Montero, LA, Univ La Habana, Fac Quim, Dept Quim Analit, Lab Quim Computac & Teor, Havana 10400, Cuba. NR 34 TC 23 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AMER CHEM SOC JI J. Am. Chem. Soc. PD NOV 25 PY 1998 VL 120 IS 46 BP 12023 EP 12033 PG 11 SC Chemistry, Multidisciplinary GA 142QD UT ISI:000077210900023 ER PT J AU Fernandez-Ramos, C Luque, F Fernandez-Becerra, C Osuna, A Jankevicius, SI Jankevicius, JV Rosales, MJ Sanchez-Moreno, M TI Biochemical characterisation of flagellates isolated from fruits and seeds from Brazil SO FEMS MICROBIOLOGY LETTERS LA English DT Article DE trypanosomatid, lower; Phytomonas; isoenzyme; H-1-NMR spectroscopy ID GENUS PHYTOMONAS; TRYPANOSOMATIDS; IDENTIFICATION; ISOENZYMES AB Seven flagellates of the family Trypanosomatidae have been isolated from different fruits and seeds from Brazil, three from tomato fruit (Lycopersicum esculentum), one from urucum fruit (Bixa orellana), two from maize kernels (Zea mays) and one from bean (Phaseolus vulgaris). These isolates were characterised by isoenzymatic analysis, using nine enzymatic systems and the isoenzymatic profiles were compared with those obtained From different flagellates already described as belonging to the genera Phytomonas, Herpetomonas and Crithidia. Most of the isoenzymes were able to distinguish the new plant isolates from insect trypanosomatids (Herpetomonas and Crithidia). Six of the isolates could be ascribed to the genus Phytomonas, five of them being phylogenetically closely related to Phytomonas serpens. The new isolates excreted the same metabolic end-products into the external medium and only small quantitative differences were found among the different isolates. (C) 1999 Published by Elsevier Science B.V. All rights reserved. C1 Univ Granada, Fac Ciencias, Inst Biotecnol, Grp Bioquim & Parasitol Mol, E-18071 Granada, Spain. Univ Estadual Londrina, Dept Patol Gen, Londrina, PR, Brazil. RP Sanchez-Moreno, M, Univ Granada, Fac Ciencias, Inst Biotecnol, Grp Bioquim & Parasitol Mol, C Severo Ochoa S-N, E-18071 Granada, Spain. NR 18 TC 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-1097 J9 FEMS MICROBIOL LETT JI FEMS Microbiol. Lett. PD JAN 15 PY 1999 VL 170 IS 2 BP 343 EP 348 PG 6 SC Microbiology GA 160UJ UT ISI:000078249200008 ER PT J AU Diaz-Garcia, JA Jaimez, RG TI Proof of the conjectures of H. Uhlig on the singular multivariate beta and the Jacobian of a certain matrix transformation SO ANNALS OF STATISTICS LA English DT Article DE Wishart distribution; beta distribution; singular matrix distributions AB Uhlig proposes two conjectures. The first concerns the Jacobian of the transformation Y = B X B' where B is the matrix m x m and m and X, Y belong to the class of positive semidefinite matrices of the order of m X m of rank n < m, S-m,n(+). The second is concerned with the singular multivariate Beta distribution. This article seeks to prove the two conjectures. The latter result is then extended to the case of the singular multivariate F distribution, and the respective density functions are located for the nonzero positive eigenvalues of the singular Beta and F matrices. C1 Univ Granada, Fac Sci, Dept Stat, E-18071 Granada, Spain. Univ Autonoma Agr Antonio Narro, Saltillo 25315, Coahuila, Mexico. RP Diaz-Garcia, JA, Univ Granada, Fac Sci, Dept Stat, E-18071 Granada, Spain. NR 4 TC 12 PU INST MATHEMATICAL STATISTICS PI HAYWARD PA IMS BUSINESS OFFICE-SUITE 7, 3401 INVESTMENT BLVD, HAYWARD, CA 94545 USA SN 0090-5364 J9 ANN STATIST JI Ann. Stat. PD OCT PY 1997 VL 25 IS 5 BP 2018 EP 2023 PG 6 SC Statistics & Probability GA 176DE UT ISI:000079135000012 ER PT J AU Viseras, J Lugaresi, CI Volpogni, MM Guglielmone, AA TI Comparison of cattle responses to mono-specific or combined inoculations with Babesia bigemina and Babesia bovis vaccine strains SO PARASITE-JOURNAL DE LA SOCIETE FRANCAISE DE PARASITOLOGIE LA English DT Article DE Babesia bovis; Babesia bigemina; vaccinal strains; cattle immune response AB Combined inoculation of cattle with vaccine strains of Babesia bigemina and Babesia bovis induced lower antibody titers to B. bigemina than to B. bovis (previous study). Three groups of heifers were used to detect if the low antibody level was due to competition between Babesia species: individuals of G1 and G2 were inoculated with 10 million B. bigemina and B. bovis, respectively, and those of G3 with 10 million of each parasite. The prepatent periods, maximum parasitaemias and antibody titers (indirect immunofluorescent antibody test) were evaluated. The mean prepatent periods (days) for B. bigemina was of 5.6 (G1) and 5.2 (G3) and 7.0 (G2) and 6.7 (G3) for B. bovis (P > 0.05, "t" test). No differences were found in the parasitaemias. The only difference was found in the antibody titers to B. bovis, that were lower (P < 0.05 "t" test) from week 7 onwards when B. bovis was used in combination. The biological significance of this difference is unclear. C1 Inst Nacl Tecnol Agropecuaria, Estac Expt Agropecuaria Rafaela, RA-2300 Rafaela, Santa Fe, Argentina. Univ Granada, Dept Parasitol, Granada 18071, Spain. RP Guglielmone, AA, Inst Nacl Tecnol Agropecuaria, Estac Expt Agropecuaria Rafaela, CC 22, RA-2300 Rafaela, Santa Fe, Argentina. NR 10 TC 0 PU PRINCEPS EDITIONS PI ISSY MOULINEAUX PA 64 AVENUE CHARLES DE GAULLE, 92130 ISSY MOULINEAUX, FRANCE SN 1252-607X J9 PARASITE JI Parasite-J. Soc. Fr. Parasitol. PD MAR PY 1999 VL 6 IS 1 BP 67 EP 69 PG 3 SC Parasitology GA 182JM UT ISI:000079495900010 ER PT J AU Signorella, S Santoro, M Frutos, A Escandar, G Salas-Peregrin, JM Moreno, V Gonzalez-Sierra, M Sala, LF TI The interaction of D-galactonic acid with Cr-VI and Cr-III. Structure, stability and physical properties of Cr-III-aldonate complexes SO JOURNAL OF INORGANIC BIOCHEMISTRY LA English DT Article DE galactonate; chromium(III)-aldonate complexes; stability; structures ID METAL SACCHARIDE CHEMISTRY; D-ALDURONIC ACIDS; D-GLUCONIC ACID; AQUEOUS-SOLUTION; CRYSTAL-STRUCTURE; PERCHLORIC-ACID; CHROMIUM(III) COMPLEXES; OXIDATION; MECHANISM; KINETICS AB The redox reaction between D-galactonic acid and potassium chromate yields {((lyxonateH(-1)) (galactonateH(-1)) Cr(OH2))K . H2O}(n), with both aldonate molecules acting as bidentate ligands with the carboxylate and one alkoxo function as the donor sites. The shift of the CO2- stretching vibration towards lower frequencies upon coordination and the high value of av indicate that the carboxylate acts as a monodentate donor site. Magnetic susceptibility data for the compound in the temperature range 3-300 K exhibit a drop in the effective magnetic moment with temperature below 70 K, which is indicative of antiferromagnetic interactions between the Cr-III centres. The molar magnetic susceptibility versus temperature plot could be fitted with the Fisher Hamiltonian for the case of infinite chains, equation-modified for the presence of monomeric species. The EPR and W-Vis spectroscopic studies reveal that, in solution, the complex retains the distorted octahedral local coordination geometry. The {((lyxonateH(-1))(galactonateH(-1))Cr(OH2))K}(n) dissociates slowly in aqueous solution but faster at high [H+], because of the rapid protonation of the alkoxo bridges linking the monomeric units. The potentiometric evaluation of the closely related binary system Cr-III-D-galactonate shows that the (Cr(galactonateH(-n))(2))(1-2n) complexes are the major species in the 4-12 pH range, when a 1:2 Cr-III:ligand ratio is used. C-13 NMR reveals that the CO2- group is one of the coordination sites of the ligand. (C) 1999 Elsevier Science Inc. All rights reserved. C1 UNR, Fac Ciencias Bioquim & Farmaceut, Dept Quim Fis, RA-2000 Rosario, Argentina. UNR, Fac Ciencias Bioquim & Farmaceut, Dept Quim Analit, RA-2000 Rosario, Argentina. Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. Univ Barcelona, Dept Quim Inorgan, Barcelona 08208, Spain. UNR, Fac Ciencias Bioquim & Farmaceut, Dept Quim Organ, RA-2000 Rosario, Argentina. RP Sala, LF, UNR, Fac Ciencias Bioquim & Farmaceut, Dept Quim Fis, Suipacha 531, RA-2000 Rosario, Argentina. NR 52 TC 4 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 USA SN 0162-0134 J9 J INORG BIOCHEM JI J. Inorg. Biochem. PD JAN-FEB PY 1999 VL 73 IS 1-2 BP 93 EP 100 PG 8 SC Biochemistry & Molecular Biology; Chemistry, Inorganic & Nuclear GA 184BQ UT ISI:000079589800011 ER PT J AU Daier, V Signorella, S Rizzotto, M Frascaroli, MI Palopoli, C Brondino, C Salas-Peregrin, JM Sala, LF TI Kinetics and mechanism of the reduction of Cr-VI to Cr-III by D-ribose and 2-deoxy-D-ribose SO CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE LA English DT Article DE ribose; 2 deoxyribose; chromium; redox; mechanism; kinetics ID PERCHLORIC-ACID; CARCINOGENIC CHROMIUM(VI); OXOCHROMATE(V) COMPLEXES; CHROMIC OXIDATION; L-RHAMNOSE; D-MANNOSE; GLUTATHIONE; CR(VI); IONS; 2-DEOXY-D-GLUCOSE AB The oxidation of D-ribose and 2-deoxy-D-ribose by Cr-VI yields the aldonic acid and Cr3+ as final products when an excess of sugar over Cr-VI is used. The redox reaction occurs through Cr-VI-->Cr-III and Cr-VI-->Cr-V-->Cr-III paths. The complete rate laws for the Cr-VI oxidation reactions are expressed by -d[Cr-VI]/dt = k(H)[H+](2) [ribose][Cr-VI], where k(H) = (5.9 +/- 0.1) x 10(-2) mol(-3) dm(9) s(-1), and -d[Cr-VI]/dt = (k(0) + k(H)'[H+](2)) [2-deoxyribose] [Cr-VI], where k(0) = (1.3 +/- 0.5) x 10(-3) mol(-1) dm(3) s(-1) and k(H)' = (4.2 +/- 0.1) x 10(-2) mol(-3) dm(9) s(-1) at 33 degrees C. An intermediate sugar alkoxide radical could be trapped with DMPO and observed by EPR as a multiline signal at g = 2.003. Cr-V is formed in a rapid step by reaction of the sugar radical with Cr-VI. Cr-V reacts with the substrate faster than Cr-VI does. The EPR spectra show that five- and six-coordinate oxochromate(V) intermediates are formed, and the distribution of these Cr-V species in the reaction mixture essentially depends on the solution acidity. C1 UNR, Fac Ciencias Bioquim & Farmaceut, Dept Quim, RA-2000 Rosario, Santa Fe, Argentina. Inst Desarrollo Tecnol Ind Quim, RA-3000 Geumes, Santa Fe, Argentina. Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. RP Sala, LF, UNR, Fac Ciencias Bioquim & Farmaceut, Dept Quim, Suipacha 531, RA-2000 Rosario, Santa Fe, Argentina. EM inquibir@satlink.com NR 38 TC 20 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA, ONTARIO K1A 0R6, CANADA SN 0008-4042 J9 CAN J CHEM JI Can. J. Chem.-Rev. Can. Chim. PD JAN PY 1999 VL 77 IS 1 BP 57 EP 64 PG 8 SC Chemistry, Multidisciplinary GA 185AQ UT ISI:000079646300007 ER PT J AU Frutos, AA Sala, LF Escandar, GM Devillers, M Peregrin, JMS Sierra, MG TI Bismuth(III) complexes of D-gluconic acid. Studies in aqueous solution and in the solid phase SO POLYHEDRON LA English DT Article DE bismuth(III) complex; D-gluconic acid; competition equilibria ID D-ALDURONIC ACIDS; SELECTIVE OXIDATION; ALDONIC ACIDS; METAL-IONS; CATALYSTS; BI; ALUMINUM(III); GALLIUM(III); EQUILIBRIUM; OXYGEN AB The system formed between bismuth(III) ion and D-gluconic acid was potendometrically studied in aqueous solution. Measurements were carried out at 20.0 and 25.0+/-0.1 degrees C and the ionic strength was maintained at 0.100 M with NaNO3. The potentiometric curves showed the release of four protons in addition to the carboxylic one, leading to the formation of complexes with different degrees of deprotonation. Since the first chelate was completely formed at low pH, competition equilibria involving ethylenediaminetetraacetic acid or nitrilotriacetic acid ligands were used to calculate the corresponding equilibrium constant. Coordination bonding sites for metal-ligand interactions were inferred from C-13 NMR spectroscopy. According to the obtained results, the complex formed at acid pH would present a carboxylate coordination and those formed at high pH would involved a bonding with the oxygens of carbons 2, 3, 4 and 5. On the other hand, the complex Bi(C6H9O7). H2O was isolated and characterized by elemental and thermogravimetric analyses and by Fourier transform infra-red (FT-IR) spectroscopy. While the thermogravimetric analyses confirmed the water content in the solid complex, the IR spectra showed a monodentate carboxylate coordination. (C) 1999 Elsevier Science Ltd. All rights reserved. C1 Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim Fis, RA-2000 Rosario, Santa Fe, Argentina. Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim Analit, RA-2000 Rosario, Santa Fe, Argentina. Univ Catholique Louvain, Lab Chim Inorgan & Analyt, B-1348 Louvain, Belgium. Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim Organ, RA-2000 Rosario, Santa Fe, Argentina. RP Sala, LF, Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim Fis, Suipacha 531, RA-2000 Rosario, Santa Fe, Argentina. NR 35 TC 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0277-5387 J9 POLYHEDRON JI Polyhedron PY 1999 VL 18 IS 7 BP 989 EP 994 PG 6 SC Chemistry, Inorganic & Nuclear; Crystallography GA 195CQ UT ISI:000080231900009 ER PT J AU Gonzalez, M Medina, R Losada, MA TI Equilibrium beach profile model for perched beaches SO COASTAL ENGINEERING LA English DT Article DE submerged breakwaters; coastal structures; equilibrium beach profile; nourishment; beach erosion ID BREAKWATER AB A beach profile equilibrium model for perched beaches is presented. The model assumes that wave reflection at the seaward and leeward sides of the breakwater is the most important process that modifies Dean's equilibrium profile model for non-perched beaches. The influence of wave breaking over the submerged structure is also discussed. Several laboratory data sets are used to analyze the merit of the proposed model for describing the equilibrium condition of a perched beach. A good comparison is obtained. Results show that if the ratio between the water depth above the submerged structure, d, and the water depth at the toe of the structure, h(e), is large, d/h(e) > 0.5, only minor advance of the shoreline is achieved with the construction of a toe structure. A considerable advance is obtained for d/h(e) less that 0.1. In these situations, however, resonant effects may result in an inefficient structure. The proposed model is used to provide an estimation for the required sand volume and the associated beach advance for the case of narrow breakwaters. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Univ Cantabria, Dept Ciencias & Tecn Agua & Med Ambiente, Ocean & Coastal Res Grp, E-39005 Santander, Spain. Univ Valle, Dept Mecan Fluidos & Ciencias Termicas, Cali, Colombia. Univ Granada, Dept Ingn Civil, E-18071 Granada, Spain. RP Gonzalez, M, Univ Cantabria, Dept Ciencias & Tecn Agua & Med Ambiente, Ocean & Coastal Res Grp, E-39005 Santander, Spain. NR 26 TC 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3839 J9 COAST ENG JI Coast. Eng. PD MAY PY 1999 VL 36 IS 4 BP 343 EP 357 PG 15 SC Engineering, Civil; Engineering, Ocean GA 196DQ UT ISI:000080294100004 ER PT J AU Bauer, E Lallena, AM TI Quasielastic electron scattering from nuclei: Random-phase vs ring approximations SO PHYSICAL REVIEW C LA English DT Article ID LONGITUDINAL RESPONSE FUNCTION; CONTINUUM RPA; SPIN ISOSPIN; C-12; CURRENTS; E,E'P AB We investigate the extent to which the nuclear transverse response to electron scattering in the quasielastic region, evaluated in the random-phase approximation, can be described by ring approximation calculations. Different effective interactions based on a standard model of the type g' + V-pi + V-rho are employed. For each momentum transfer, we have obtained the value of g(0)' permitting the ring response to match the position of the peak and/or the non-energy-weighted sum rule provided by the random-phase approach. It is found that, in general, it is not possible to reproduce both magnitudes simultaneously for a given g(0)' value. [S0556-2813(99)01605-2]. C1 Natl Univ La Plata, Dept Fis, Fac Ciencias Exactas, RA-1900 La Plata, Argentina. Univ Granada, Dept Fis Moderna, E-18071 Granada, Spain. RP Bauer, E, Natl Univ La Plata, Dept Fis, Fac Ciencias Exactas, RA-1900 La Plata, Argentina. NR 26 TC 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD MAY PY 1999 VL 59 IS 5 BP 2603 EP 2607 PG 5 SC Physics, Nuclear GA 197UC UT ISI:000080383200035 ER PT J AU Barrero, AF Oltra, JE Raslan, DS Saude, DA TI Microbial transformation of sesquiterpene lactones by the fungi Cunninghamella echinulata and Rhizopus oryzae SO JOURNAL OF NATURAL PRODUCTS LA English DT Article ID GERMACRANOLIDES; COSTUNOLIDE AB Incubations of the fungi Cunninghamella echinulata and Rhizopus oryzae with the sesquiterpene lactones (+)-costunolide (1), (+)-cnicin (2), (+)-salonitenolide (3), (-)-dehydrocostuslactone (4), (-)-lychnopholide (5), and (-)-eremantholide C (6) were performed. Incubation of 1 with C. echinulata afforded Delta(11(13))-dihydrogenation and Delta(1(10))-epoxidation products (7-10). C. echinulata also hydrolyzed the side chain of 2, and transformed 4 into (+)-11 alpha,13-dihydrodehydrocostuslactone (12), a new natural product. R, oryzae converted 4 into both Delta(11(13))-dihydrogenation and Delta(10(14))-epoxidation products (16 and 17). Both fungi transformed 5 into (-)-16-(1-methyl-1-propenyl)eremantholanolide (13), providing experimental evidence for the biosynthesis of the eremantholide hemiketal unit. Compounds 3 and 6 were not metabolized by either fungus under the test conditions. C1 Univ Granada, Fac Ciencias, Inst Biotechnol, Dept Quim Organ, E-18071 Granada, Spain. Univ Fed Minas Gerais, Inst Ciencias Exatas, Dept Quim, Belo Horizonte, MG, Brazil. RP Barrero, AF, Univ Granada, Fac Ciencias, Inst Biotechnol, Dept Quim Organ, Campus Fuentenueva S-N, E-18071 Granada, Spain. NR 25 TC 13 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0163-3864 J9 J NAT PROD JI J. Nat. Prod. PD MAY PY 1999 VL 62 IS 5 BP 726 EP 729 PG 4 SC Plant Sciences; Chemistry, Applied; Chemistry, Medicinal; Pharmacology & Pharmacy GA 201YP UT ISI:000080625100016 ER PT J AU Daza, MC Dobado, JA Molina, JM Salvador, P Duran, M Villaveces, JL TI Basis set superposition error-counterpoise corrected potential energy surfaces. Application to hydrogen peroxide center dot center dot center dot X (X=F-, Cl-, Br-, Li+, Na+) complexes SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DENSITY-FUNCTIONAL THEORY; AB-INITIO; THERMODYNAMIC PROPERTIES; VIBRATIONAL FREQUENCIES; BONDED COMPLEXES; BSSE PROBLEM; MOLECULES; DIMER; ATOMS; SYSTEMS AB Moller-Plesset (MP2) and Becke-3-Lee-Yang-Parr (B3LYP) calculations have been used to compare the geometrical parameters, hydrogen-bonding properties, vibrational frequencies and relative energies for several X- and X+ hydrogen peroxide complexes. The geometries and interaction energies were corrected for the basis set superposition error (BSSE) in all the complexes (1-5), using the full counterpoise method, yielding small BSSE values for the 6-311+G(3df,2p) basis set used. The interaction energies calculated ranged from medium to strong hydrogen-bonding systems (1-3) and strong electrostatic interactions (4 and 5). The molecular interactions have been characterized using the atoms in molecules theory (AIM), and by the analysis of the vibrational frequencies. The minima on the BSSE-counterpoise corrected potential-energy surface (PES) have been determined as described by S. Simon, M. Duran, and J. J. Dannenberg, and the results were compared with the uncorrected PES. (c) 1999 American Institute of Physics. C1 Univ Granada, Inst Biotechnol, Grp Modelizac & Diseno Mol, E-18071 Granada, Spain. Univ Girona, Inst Quim Computac, Girona 17071, Spain. Univ Nacl Colombia, Fac Ciencias, Lab Invest Basicas, Santa Fe de Bogota, Colombia. RP Molina, JM, Univ Granada, Inst Biotechnol, Grp Modelizac & Diseno Mol, Campus Fuentenueva, E-18071 Granada, Spain. NR 57 TC 16 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 22 PY 1999 VL 110 IS 24 BP 11806 EP 11813 PG 8 SC Physics, Atomic, Molecular & Chemical GA 204CN UT ISI:000080745500017 ER PT J AU Mohana-Borges, R Silva, JL Ruiz-Sanz, J de Prat-Gay, G TI Folding of a pressure-denatured model protein SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID BARLEY CHYMOTRYPSIN INHIBITOR-2; NUCLEATION-CONDENSATION MECHANISM; 2 COMPLEMENTARY FRAGMENTS; TRANSITION-STATE; STRUCTURAL CHARACTERIZATION; STAPHYLOCOCCAL NUCLEASE; FUNNELS; ASSOCIATION; PATHWAYS; KINETICS AB The noncovalent complex formed by the association of two fragments of chymotrypsin inhibitor-2 is reversibly denatured by pressure in the absence of chemical denaturants, On pressure release, the complex returned to its original conformation through a biphasic reaction, with first-order rate constants of 0.012 and 0.002 s(-1), respectively. The slowest phase arises from an interconversion of the pressure-denatured state, as revealed by double pressure-jump experiments. Below 5 mu M, the process was concentration dependent with a second-order rate constant of 1,700 s(-1) M-1. Fragment association at atmospheric pressure showed a similar break in the order of the reaction above 5 mu M, but both first- and second-order folding/association rates are 2.5 times faster than those for the refolding of the pressure-denatured state. Although the folding rates of the intact protein and the association of the fragments displayed nonlinear Eyring behavior for the temperature dependence, refolding of the pressure-denatured complex showed a linear response. The negligible heat capacity of activation reflects a balance of minimal change in the burial of residues from the pressure-denatured state to the transition state. If we add the higher energy barrier in the refolding of the pressure-denatured state, the rate differences must lie in the structure of this state, which has to undergo a structural rearrangement. This clearly differs from the conformational flexibility of the isolated fragments or the largely unfolded denatured state of the intact protein in acid and provides insight into denatured states of proteins under folding conditions. C1 Univ Buenos Aires, Fdn Campomar, Inst Invest Bioquim, RA-1405 Buenos Aires, DF, Argentina. Univ Buenos Aires, Fac Ciencias Exactas & Nat, RA-1405 Buenos Aires, DF, Argentina. Univ Granada, Fac Ciencias, Dept Quim Fis, E-18071 Granada, Spain. Univ Granada, Fac Ciencias, Inst Biotechnol, E-18071 Granada, Spain. Univ Fed Rio de Janeiro, Dept Bioquim Med, BR-21741590 Rio De Janeiro, Brazil. RP de Prat-Gay, G, Univ Buenos Aires, Fdn Campomar, Inst Invest Bioquim, Patricias Argentinas 435, RA-1405 Buenos Aires, DF, Argentina. NR 34 TC 28 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 PROC NAT ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD JUL 6 PY 1999 VL 96 IS 14 BP 7888 EP 7893 PG 6 SC Multidisciplinary Sciences GA 214RV UT ISI:000081342100054 ER PT J AU Ortiz-Ortiz, L Mora, N Zambrano-Villa, SA Carrero, JC Sanchez-Zerpa, M Osuna, A Rosales-Borjas, DM TI Secretory immune response in patients with intestinal amoebiasis SO PARASITE IMMUNOLOGY LA English DT Article DE Entamoeba histolytica; sIgA; saliva; membrane antigens; intestinal amoebiasis; invasive amoebiasis ID PATHOGENIC ENTAMOEBA-HISTOLYTICA; INHIBITABLE LECTIN ELICITS; IMMUNOGLOBULIN-A RESPONSE; ORAL IMMUNIZATION; ADHERENCE LECTIN; SURFACE-ANTIGEN; IGA ANTIBODIES; LIVER-ABSCESS; PROTEIN; AMEBIASIS AB The secretory immune response in saliva from intestinal amoebiasis patients against antigens obtained from Entamoeba histolytica membranes was studied. Western blot analysis indicated that patient saliva contains secretory IgA antibodies against antigens with molecular masses ranging from 170 to 24 kDa, some of which were also recognized by saliva from healthy subjects. However; antigens of 170, 125, 46 and 37 kDa are recognized more frequently (> 90%) by the secretory IgA from patients with intestinal amoebiasis than by that from healthy subjects (<10%). C1 Univ Nacl Autonoma Mexico, Inst Invest Biomed, Dept Immunol, Mexico City 04510, DF, Mexico. Univ Guadalajara, Ctr Ciencias Exactas & Ingenierias, Guadalajara 44430, Jalisco, Mexico. Univ Granada, Inst Biotecnol, Grp Bioquim & Parasitol Mol, E-18071 Granada, Spain. Hosp Univ Dr Miguel Oraa, Guanare, Estado Portugue, Venezuela. RP Ortiz-Ortiz, L, Univ Nacl Autonoma Mexico, Inst Invest Biomed, Dept Immunol, Apartado Postal 70228, Mexico City 04510, DF, Mexico. NR 29 TC 3 PU BLACKWELL SCIENCE LTD PI OXFORD PA P O BOX 88, OSNEY MEAD, OXFORD OX2 0NE, OXON, ENGLAND SN 0141-9838 J9 PARASITE IMMUNOL JI Parasite Immunol. PD OCT PY 1998 VL 20 IS 10 BP 503 EP 507 PG 5 SC Immunology; Parasitology GA 223EC UT ISI:000081826600008 ER PT J AU Nys, Y Hincke, MT Arias, JL Garcia-Ruiz, JM Solomon, SE TI Avian eggshell mineralization SO POULTRY AND AVIAN BIOLOGY REVIEWS LA English DT Review DE avian eggshell; uterine fluid; calcium; bicarbonate; calcite; mineralization; matrix; ovocleidin ID CALCIUM-BINDING PROTEINS; SHELL GLAND; EGG-SHELL; VITAMIN-D; LAYING HEN; GENE-EXPRESSION; SOLUBLE MATRIX; UTERINE FLUID; IMMUNOHISTOCHEMICAL LOCALIZATION; ORGANIC MATRIX AB The eggshell of the hen is a highly ordered mineral structure deposited in an acellular milieu secreted by the distal parts of the oviduct; the isthmus and uterus. Spherulitic crystal growth is initiated by deposition of calcium carbonate on organic aggregates layed quasiperiodically on the outer surface of eggshell membranes. The uterus secretes a hypersaturated milieu relative to calcite during the phase of eggshell formation. The mechanisms and hormonal control of calcium and bicarbonate fluxes have been partially identified, The uterine fluid also contained organic molecules and a matrix which pervades the calcified layer and can be extracted as soluble and insoluble fractions. SDS-PAGE reveals a complex array of proteins in uterine fluid and eggshell:extract in hens and other species of birds, among them ovocleidin-17, (OC17), a specific uterine protein and osteopontin, a bone matrix protein. Serum albumin, ovalbumin, lysozyme and ovotransferrin are also present in hen eggshell. Similarities in protein electrophoretic profiles, as well as the presence of serum albumin, ovalbumin, lysozyme, ovotransferrin and OC17 in the uterine fluid and the modification of this organic composition with different stages of shell formation support the hypothesis that the precursors of eggshell matrix are found in this milieu. Eggshell extracts or uterine fluid contain components which are able in vitro to delay, from a metastable solution of calcium and carbonate, the rate of precipitation of calcium carbonate and to modify the size and crystal morphology of the resulting calcite. Proteoglycans, primarily keratan- and dermatan-sulfate are also found in the eggshell matrix, and they also modify crystal precipitation and morphology. These observations suggest that these macromolecules may influence the organization of crystal growth by controlling size, shape and orientation of calcite crystals. The identification of matrix components and analysis of their biochemical and functional properties is a necessary prerequisite to gain insight into the mechanisms and regulation of eggshell calcification and for the development of new approaches to control eggshell quality. C1 INRA, Rech Avicoles Stn, F-37380 Nouzilly, France. Univ Ottawa, Ottawa, ON K1H 8M5, Canada. Univ Chile, Santiago, Chile. Univ Granada, CSIC, Granada 18002, Spain. Univ Glasgow, Glasgow G61 1QH, Lanark, Scotland. RP Nys, Y, INRA, Rech Avicoles Stn, F-37380 Nouzilly, France. NR 101 TC 55 PU SCIENCE & TECHNOLOGY LETTERS PI NORTHWOOD PA PO BOX 81,, NORTHWOOD, MIDDX, ENGLAND HA6 3DN SN 1357-048X J9 POULT AVIAN BIOL REV JI Poult. Avian Biol. Rev. PY 1999 VL 10 IS 3 BP 143 EP 166 PG 24 SC Agriculture, Dairy & Animal Science GA 239EE UT ISI:000082755200002 ER PT J AU Villanueva, JAL Gasparian, V TI Local Larmor clock approach to the escape time SO PHYSICS LETTERS A LA English DT Article ID BARRIER-INTERACTION TIMES; TRAVERSAL TIME; TUNNELING ESCAPE; SCATTERING AB The escape of an electron from a localized state in a quantum well with one or several surrounding barriers is analyzed using the local Larmor clock approach. We show that two time scales can be involved in the escape time problem, such as in the case of a scattering configuration. The particular example of a potential well with a hard wall condition on one side, i.e. escaping through only one open channel, is investigated, and the two time components are calculated analytically. One of the time components is shown to coincide with the lifetime expression obtained with a different approach, in the case of an opaque barrier, at an energy close to the bound level in the well. (C) 1999 Published by Elsevier Science B.V. All rights reserved. C1 Univ Guanajuato, Fac Quim, Guanajuato 36050, Mexico. Univ Granada, Dept Elect & Tecnol Comp, E-18071 Granada, Spain. RP Gasparian, V, Univ Guanajuato, Fac Quim, Noria Alta S-N, Guanajuato 36050, Mexico. NR 20 TC 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9601 J9 PHYS LETT A JI Phys. Lett. A PD SEP 13 PY 1999 VL 260 IS 3-4 BP 286 EP 293 PG 8 SC Physics, Multidisciplinary GA 241ET UT ISI:000082870300017 ER EFFN ISI Export Format VR 1.0 PT J AU Finkelshtein, AM Cabrera, HP TI Strong asymptotics for Sobolev orthogonal polynomials SO JOURNAL D ANALYSE MATHEMATIQUE LA English DT Article ID RELATIVE ASYMPTOTICS; INNER-PRODUCT AB In this paper we obtain the strong asymptotics for the sequence of orthogonal polynomials with respect to the inner product [f, g] s = Sigma(k = 0)(m) integral(Delta k) f((k))(x)g((k))(x)d mu(k)(x), where {mu(k)}(k=0)(m), m is an element of Z(+), are measures supported on [-1, 1] which satisfy Szego's condition. C1 Univ Almeria, Dept Estadist & Matemat Aplicada, Almeria 04120, Spain. Univ Granada, Inst Carlo I Fis Teor & Computac, E-18071 Granada, Spain. Univ Matanzas, Dept Matemat, Matanzas, Cuba. NR 13 TC 1 PU MAGNES PRESS PI JERUSALEM PA PO BOX 7695, JERUSALEM 91076, ISRAEL SN 0021-7670 J9 J ANAL MATH JI J. Anal. Math. PY 1999 VL 78 BP 143 EP 156 PG 14 SC Mathematics GA 243BA UT ISI:000082976200005 ER PT J AU Oloriz, F Villasenor, AB TI New microconchiate Hybonoticeras from Mexico SO GEOBIOS LA English DT Article DE Hybonoticeras; ammonitina; upper Kimmeridgian; lower Tithonian; Mexico AB A diversified and previously unknown record of microconchiate Hybonoticeras is analysed on the basis of the material collected in sections sampled bed-by-bed in the Mexican Altiplano. Five new species are described and compared to species traditionally recorded from the uppermost Kimmeridgian and the lowermost Tithonian in Europe. A general trend to smoothing in Mexican and European species during the earliest Tithonian is outlined. C1 Univ Granada, Fac Ciencias, Dept Estrtigrafia & Paleontologia, E-18002 Granada, Spain. Univ Nacl Autonoma Mexico, Inst Geol, Dept Paleontologia, Mexico City, DF, Mexico. RP Oloriz, F, Univ Granada, Fac Ciencias, Dept Estrtigrafia & Paleontologia, Av Fuentenueva S-N, E-18002 Granada, Spain. NR 36 TC 4 PU UNIV CLAUDE BERNARD-LYONI PI VILLEURBANNE CEDEX PA CENTRE DES SCI DE LA TERRE 43 BLVD DU 11 NOVEMBRE, 69622 VILLEURBANNE CEDEX, FRANCE SN 0016-6995 J9 GEOBIOS-LYON JI Geobios PY 1999 VL 32 IS 4 BP 561 EP 573 PG 13 SC Paleontology GA 243GH UT ISI:000082988300004 ER PT J AU Odriozola, G Schmitt, A Callejas-Fernandez, J Martinez-Garcia, R Hidalgo-Alvarez, R TI Dynamic scaling concepts applied to numerical solutions of Smoluchowski's rate equation SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID CLUSTER-SIZE-DISTRIBUTION; COLLOIDAL AGGREGATION; LIGHT-SCATTERING; COAGULATION; MODEL AB Smoluchowski's equation is widely applied to describe the time evolution of the cluster-size distribution during aggregation processes. Analytical solutions for this equation, however, are known only for a very limited number of kernels. Therefore, numerical methods have to be used for describing the time evolution of the cluster-size distribution. In this work, we present a novel self-consistent method for solving Smoluchowski's equation for any homogeneous kernel. The method considers dynamic scaling to be valid but does not need to assume a given form for the scaling distribution Phi(x). Moreover, the scaling distribution Phi(x) is obtained as a natural result of the algorithm. Due to the implementation of dynamic scaling concepts, the algorithm converges almost immediately with a minimal calculation effort. Comparing calculated size distributions with the corresponding analytical solutions shows the validity of the method. The method is then used to fit experimental data for diffusion limited aggregation. For this purpose, a fitting procedure is developed which allows us to fit the corresponding parameters for any given homogeneous kernel. As an application, a full comparison between the experimental data and the numerically obtained cluster-size distributions for the constant and the Brownian kernel was carried out. (C) 1999 American Institute of Physics. C1 Univ Granada, Dept Fis Aplicada, E-18071 Granada, Spain. Univ Republ, Fac Chem, Dept Chem Phys & Math, Montevideo 11800, Uruguay. RP Hidalgo-Alvarez, R, Univ Granada, Dept Fis Aplicada, Campus Fuentenueva, E-18071 Granada, Spain. NR 34 TC 19 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD OCT 22 PY 1999 VL 111 IS 16 BP 7657 EP 7667 PG 11 SC Physics, Atomic, Molecular & Chemical GA 244LG UT ISI:000083052100056 ER PT J AU Orgueira, H Haj, MA Salas, JM Jensen, WP Tiekink, ERT TI Crystal structure of 4,5-dihydro-7-amino-5-oxo-[1,2,4]-triazolo-[1,5-a]pyrimidine, C5H5N5O SO ZEITSCHRIFT FUR KRISTALLOGRAPHIE-NEW CRYSTAL STRUCTURES LA English DT Article C1 Univ Adelaide, Dept Chem, Adelaide, SA 5005, Australia. Univ Buenos Aires, Dept Quim Organ, RA-1053 Buenos Aires, DF, Argentina. Univ Granada, Dept Quim Inorgan, E-18071 Granada, Spain. S Dakota State Univ, Dept Chem, Brookings, SD 57007 USA. RP Tiekink, ERT, Univ Adelaide, Dept Chem, Adelaide, SA 5005, Australia. NR 4 TC 2 PU R OLDENBOURG VERLAG PI MUNICH PA LEKTORAT M/N, K BERBER-NERLINGER, POSTFACH 80 13 60, D-81613 MUNICH, GERMANY SN 1433-7266 J9 Z KRIST-NEW CRYST STRUCT JI Z. Krist.-New Cryst. Struct. PY 1999 VL 214 IS 4 BP 517 EP 518 PG 2 SC Crystallography GA 249QG UT ISI:000083343300058 ER PT J AU Segovia, S Guillamon, A del Cerro, MCR Ortega, E Perez-Laso, C Rodriguez-Zafra, M Beyer, C TI The development of brain sex differences: a multisignaling process SO BEHAVIOURAL BRAIN RESEARCH LA English DT Review DE brain sex differences; cell multisignaling process; GABA; GABA(A) receptor; neuroactive steroids; neurotransmitters; vomeronsal system ID ACCESSORY OLFACTORY-BULB; SEXUALLY DIMORPHIC NUCLEUS; MEDIAL PREOPTIC NUCLEUS; CENTRAL NERVOUS-SYSTEM; BED NUCLEUS; STRIA TERMINALIS; GONADAL-STEROIDS; FEMALE RATS; SYNAPTIC ORGANIZATION; MITRAL CELLS AB In order to account for the development of sex differences in the brain, we took, as an integrative model, the vomeronasal pathway, which is involved in the control of reproductive physiology and behavior. The fact that brain sex differences take place in complex neural networks will help to develop a motivational theory of se?; differences in reproductive behaviors. We also address the classic genomic actions in which three agents (the hormone, the intracellular receptor, and the transcription function) play an important role in brain differentiation, but we also point out refinements that such a theory requires if we want to account of the existence of two morphological patterns of sex differences in the brain, one in which males show greater morphological measures (neuron numbers and/or volume) than females and the opposite. Moreover, we also consider very important processes closely related to neuronal afferent input and membrane excitability for the developing of sex differences. Neurotransmission associated to metabotropic and ionotropic receptors, neurotrophic factors, neuroactive steroids that alter membrane excitability, cross-talk (and/or by-pass) phenomena, and second messenger pathways appear to be involved in the development of brain sex differences. The sexual differentiation of the brain and reproductive behavior is regarded as a cellular multisignaling process. (C) 1999 Elsevier Science B.V. All rights reserved. C1 Univ Nacl Educ Distancia, Dept Psicobiol, E-28040 Madrid, Spain. Univ Granada, Dept Bioquim & Biol Mol, Granada, Spain. Univ Autonoma Tlaxcala, Ctr Invest Reprod Anim, Tlaxcala, Mexico. RP Segovia, S, Univ Nacl Educ Distancia, Dept Psicobiol, E-28040 Madrid, Spain. NR 105 TC 30 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-4328 J9 BEHAV BRAIN RES JI Behav. Brain Res. PD NOV 1 PY 1999 VL 105 IS 1 BP 69 EP 80 PG 12 SC Behavioral Sciences; Neurosciences GA 254DC UT ISI:000083595800006 ER PT J AU Barrero, AF Cortes, M Manzaneda, EA Cabrera, E Chahboun, R Lara, M Rivas, AR TI Synthesis of 11,12-epoxydrim-8,12-en-11-ol, 11,12-diacetoxydrimane, and warburganal from (-)-sclareol SO JOURNAL OF NATURAL PRODUCTS LA English DT Article ID BIOLOGICALLY-ACTIVE DRIMANES; WIEDENDIOL-B; SESQUITERPENOIDS; SPONGE AB The first syntheses are reported for recently isolated drimanes 11,12-epoxydrim-8,12-en-11-ol (2) and 11,12-diacetoxydrimane (3), from (-)-sclareol (1). Furthermore, two efficient new routes to the potent bioactive warburganal (4) starting also from 1 are described. C1 Univ Granada, Fac Ciencias, Inst Biotecnol, Dept Quim Organ, E-18071 Granada, Spain. Pontificia Univ Catolica Chile, Fac Quim, Dept Quim Organ, Santiago, Chile. RP Barrero, AF, Univ Granada, Fac Ciencias, Inst Biotecnol, Dept Quim Organ, Campus Fuentenueva S-N, E-18071 Granada, Spain. NR 14 TC 11 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0163-3864 J9 J NAT PROD JI J. Nat. Prod. PD NOV PY 1999 VL 62 IS 11 BP 1488 EP 1491 PG 4 SC Plant Sciences; Chemistry, Applied; Chemistry, Medicinal; Pharmacology & Pharmacy GA 260XK UT ISI:000083978600004 ER PT J AU Barrero, AF Alvarez-Manzaneda, EJ Chahboun, R Cortes, M Armstrong, V TI Synthesis and antitumor activity of puupehedione and related compounds SO TETRAHEDRON LA English DT Article DE terpenes; antitumour compounds; marine metabolites ID ESTER TRANSFER PROTEIN; WIEDENDIOL-A; (-)-SCLAREOL; PUUPEHENONE; METABOLITES; INHIBITORS; DRIMANES; SPONGE AB The first enantiospecific synthesis of bioactive marine puupehedione (2) and related compounds from (-)-sclanol (11) is reported. The antitumor activity of these compounds was assayed and compared with that of the natural products. (C) 1999 Elsevier Science Ltd. All rights reserved. C1 Univ Granada, Fac Ciencias, Dept Quim Organ, E-18071 Granada, Spain. Pontificia Univ Catolica Chile, Fac Quim, Dept Quim Organ, Santiago 22, Chile. RP Barrero, AF, Univ Granada, Fac Ciencias, Dept Quim Organ, E-18071 Granada, Spain. NR 14 TC 37 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0040-4020 J9 TETRAHEDRON JI Tetrahedron PD DEC 24 PY 1999 VL 55 IS 52 BP 15181 EP 15208 PG 28 SC Chemistry, Organic GA 263DT UT ISI:000084108200033 ER PT J AU Calvo, O Cartwright, JHE Gonzalez, DL Piro, O Rosso, OA TI Three-frequency resonances in dynamical systems SO INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS LA English DT Article ID OSCILLATORS; ATTRACTORS; LOCKING; CHAOS; MAPS AB We investigate numerically and experimentally dynamical systems having three interacting frequencies: a discrete mapping (a circle map), an exactly solvable model (a system of coupled ordinary differential equations), and an experimental device (an electronic oscillator). We compare the hierarchies of three-frequency resonances we find in each of these systems. All three show similar qualitative behaviour, suggesting the existence of generic features in the parameter-space organization of three-frequency resonances. C1 Natl Univ La Plata, Fac Ingn, Dept Electrotecn, LEICI,CICPBA, RA-1900 La Plata, Argentina. Univ Granada, CSIC, IACT, E-18071 Granada, Spain. CNR, Ist Lamel, I-40129 Bologna, Italy. Univ Illes Balears, CSIC, IMEDEA, Inst Mediterrani Estudis Avancats, E-07071 Palma de Mallorca, Spain. Univ Buenos Aires, Fac Ciencias Exactas & Nat, Inst Calculo, RA-1428 Buenos Aires, DF, Argentina. RP Calvo, O, Natl Univ La Plata, Fac Ingn, Dept Electrotecn, LEICI,CICPBA, RA-1900 La Plata, Argentina. NR 13 TC 3 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 912805, SINGAPORE SN 0218-1274 J9 INT J BIFURCATION CHAOS JI Int. J. Bifurcation Chaos PD NOV PY 1999 VL 9 IS 11 BP 2181 EP 2187 PG 7 SC Mathematics, Interdisciplinary Applications; Multidisciplinary Sciences GA 276DB UT ISI:000084859400006 ER PT J AU Toledano, M Osorio, R Fuentes, MV Carvalho, R TI Microhardness testing of superfacial and deep dentin SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Granada, E-18071 Granada, Spain. USP, FOB, Sao Paulo, Brazil. NR 0 TC 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 2000 VL 79 SI Sp. Iss. SI BP 564 EP 564 PG 1 SC Dentistry, Oral Surgery & Medicine GA 277MH UT ISI:000084937003359 ER PT J AU Barrero, AF Oltra, JE Alvarez, M Raslan, DS Saude, DA Akssira, M TI New sources and antifungal activity of sesquiterpene lactones SO FITOTERAPIA LA English DT Article DE Centaurea species; sesquiterpene lactones; antifungal activity AB In the search for new sources of sesquiterpene lactones, six Certaurea species have been analyzed. The activity against the fungus Cunninghamella echinulata (+)-cnicin (1) and (+)-salonitenolide (2), isolated from the Centaurea plants, as well as that of(+)-costunolide (3), (-)-dehydrocostuslactone (4), (-)-lychnopholide (5) and(-)-eremantholide C (6), has been evaluated. Compounds 3 and 4 showed noticeable EC50 values, whilst more polar lactones were inactive. These results suggest that a relatively low polarity is one of the molecular requirements for the antifungal activity of sesquiterpene lactones. (C) 2000 Elsevier Science B.V. All rights reserved. C1 Univ Granada, Fac Ciencias, Dept Quim Organ, Inst Biotecnol, E-18071 Granada, Spain. Univ Fed Minas Gerais, Inst Ciencias Exatas, Dept Quim, Belo Horizonte, MG, Brazil. Univ Fed Ouro Preto, Escola Farm, Dept Farm, Ctr Ouro Preto, MG, Brazil. Univ Hassan II, Mohammedia, Morocco. RP Barrero, AF, Univ Granada, Fac Ciencias, Dept Quim Organ, Inst Biotecnol, Campus Fuentenueva S-N, E-18071 Granada, Spain. NR 15 TC 23 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0367-326X J9 FITOTERAPIA JI Fitoterapia PD FEB PY 2000 VL 71 IS 1 BP 60 EP 64 PG 5 SC Chemistry, Medicinal; Pharmacology & Pharmacy GA 287LE UT ISI:000085506700011 ER PT J AU Guevara, M Garcia, JLP TI On the will: Adaptation of Kuhl's Action Control Scale to Mexico SO REVISTA MEXICANA DE PSICOLOGIA LA Spanish DT Article DE will; action control; self-regulation; test adaptation AB Translation or adaptation of psychological tests is necessary to:facilitate comparative studies among different cultural, ethnic or national groups. Adaptation should ensure the meaning equivalency of measures obtained through different versions of the same instrument. This article reports results of the first of a serie of studies, directed to have adapted versions of the Action Control Scale (ACS) to the Mexican and Spanish populations. Psychometric properties of the ACS on a Mexican sample are analyzed. Participants were 316 females and 257 males, between 15 and 54 years of age. Alpha coefficients for the three subscales were: .67 for failure,.66 for planning-decision and .55 for stability-volatility. Compared to the original sample, these values were slightly lower. The ACS' factorial structure from the Mexican sample was similar to the original one. These results allow to continue on the adaptation of the ACS to the Mexican and Spanish populations. C1 Univ Guanajuato, Fac Relac Ind, Guanajuato, Gto, Mexico. Univ Granada, E-18071 Granada, Spain. RP Guevara, M, Univ Guanajuato, Fac Relac Ind, Lascurain Retana 5,CP 36000, Guanajuato, Gto, Mexico. NR 48 TC 1 PU SOCIEDAD MEXICANA PSICOLOGIA PI TLALPAN PA APARTADO POSTAL 22-211, TLALPAN 14000, MEXICO SN 0185-6073 J9 REV MEX PSICOL JI Rev. Mex. Psicol. PD DEC PY 1999 VL 16 IS 2 BP 253 EP 265 PG 13 SC Psychology, Multidisciplinary GA 289KN UT ISI:000085620000009 ER PT J AU Gasparian, V Villanueva, JAL TI The escape time of electrons from localised states SO PHYSICA STATUS SOLIDI B-BASIC RESEARCH LA English DT Article AB The two components of the complex escape time tau(esc)(k) = tau(1)(esc)(k) - i tau(2)(esc)(k) for an electron from a localised state in a one-dimensional disordered system are shown to be connected by Kramers-Kronig integral relations. In the complex k plane, tau(1) and tau(2) form an elliptic contour. Component tau(2)(esc)(k) in the case of an opaque barrier at an energy close to the bound level in the well, coincides with the lifetime expression. C1 Univ Guanajuato, Fac Quim, Guanajuato 36000, Mexico. Univ Granada, Dept Elect & Tecnol Comp, E-18071 Granada, Spain. Yerevan State Univ, Dept Phys, Yerevan 375049, Armenia. RP Gasparian, V, Univ Guanajuato, Fac Quim, Guanajuato 36000, Mexico. NR 5 TC 0 PU WILEY-V C H VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B-BASIC RE JI Phys. Status Solidi B-Basic Res. PD MAR PY 2000 VL 218 IS 1 BP 299 EP 302 PG 4 SC Physics, Condensed Matter GA 303PJ UT ISI:000086431000061 ER PT J AU Campos, A Rodriguez, IA Sanchez-Quevedo, MC Garcia, JM Nieto-Albano, OH de Ferraris, MEG TI Mineralization of human premolar occlusal fissures. A quantitative histochemical microanalysis SO HISTOLOGY AND HISTOPATHOLOGY LA English DT Article DE mineralization; premolar; fissures; microanalysis ID X-RAY-MICROANALYSIS; ELECTRON-PROBE MICROANALYSIS; GROOVE-FOSSA-SYSTEM; OTOLITHIC MEMBRANE; 3RD MOLARS; MORPHOLOGY; ENAMEL; OTOCONIA; LESIONS AB The mechanisms of cariogenesis in occlusal fissures remain elusive because of limited information about fissure structure and wall mineralization. The purpose of the present study was to determine the correlation between morphological patterns in occlusal fissures in human premolars and quantitative histochemical patterns of mineralization in the walls of these formations. We used scanning electron microscopy and quantitative X-ray microanalysis with the peak-to-local background ratio method and microcrystalline calcium salts as standards. We distinguished three morphological patterns of fissures in scanning electron microscopic images. The wall of the fissures was less mineralized than the control enamel in all three types of fissures. Because the fissure walls are hypomineralized, we suggest that practicing dentists should take into account the degree of mineralization when they are preparing the fissures for the application of sealant. C1 Univ Granada, Fac Med & Odontol, Sch Med & Dent, Dept Histol & Cell Biol, E-18071 Granada, Spain. Natl Univ Cordoba, Fac Odontol, Catedra Histol & Embryol B, Cordoba, Argentina. RP Campos, A, Univ Granada, Fac Med & Odontol, Sch Med & Dent, Dept Histol & Cell Biol, E-18071 Granada, Spain. NR 29 TC 3 PU F HERNANDEZ PI MURCIA PA PLAZA FUENSANTA 2-7 C, 30008 MURCIA, SPAIN SN 0213-3911 J9 HISTOL HISTOPATHOL JI Histol. Histopath. PD APR PY 2000 VL 15 IS 2 BP 499 EP 502 PG 4 SC Cell Biology; Pathology GA 305ZJ UT ISI:000086571400021 ER PT J AU Pedrosa, RHL Ritore, M TI Isoperimetric domains in the Riemannian product of a circle with a simply connected space form and applications to free boundary problems SO INDIANA UNIVERSITY MATHEMATICS JOURNAL LA English DT Article DE isoperimetric problem; constant mean curvature submanifolds; stability; free; boundary hypersurfaces ID CONSTANT MEAN-CURVATURE; STABILITY; SURFACES; HYPERSURFACES; REGULARITY; VOLUME; SETS AB We study the isoperimetric problem in the Riemannian products S-1(r) x Q(c)(n), where Q(c)(n) is the n-dimensional simply connected space form of constant sectional curvature c = 0, 1, -1, and r > 0. The problem of classifying stable free boundary hypersurfaces with constant mean curvature between two parallel hyperplanes in R-n for n greater than or equal to 3 is also treated. C1 Univ Estadual Campinas, IMECC, Dept Matemat, BR-13083970 Campinas, SP, Brazil. Univ Granada, Dept Geometria & Topol, E-18071 Granada, Spain. RP Pedrosa, RHL, Univ Estadual Campinas, IMECC, Dept Matemat, BR-13083970 Campinas, SP, Brazil. NR 30 TC 18 PU INDIANA UNIV MATH JOURNAL PI BLOOMINGTON PA SWAIN HALL EAST 222, BLOOMINGTON, IN 47405 USA SN 0022-2518 J9 INDIANA UNIV MATH J JI Indiana Univ. Math. J. PD WIN PY 1999 VL 48 IS 4 BP 1357 EP 1394 PG 38 SC Mathematics GA 319WA UT ISI:000087365300006 ER PT J AU Gonzalez-Martin, G Figueroa, C Merino, I Osuna, A TI Allopurinol encapsulated in polycyanoacrylate nanoparticles as potential lysosomatropic carrier: preparation and trypanocidal activity SO EUROPEAN JOURNAL OF PHARMACEUTICS AND BIOPHARMACEUTICS LA English DT Article DE allopurinol; drug carrier; nanoparticles; polycyanoacrylates; Trypanosoma cruzi ID CHRONIC CHAGAS-DISEASE; TRYPANOSOMA-CRUZI; INOSINE ANALOGS; EFFICACY; CHEMOTHERAPY; METABOLISM; STRAINS; INVITRO; CULTURE AB The activity of allopurinol-loaded polyethylcyanoacrylate nanoparticles against Trypanosoma cruzi was compared to that of free allopurinol using in vitro cultures of epimastigotes. Ethylcyanoacrylate nanoparticles were prepared by an emulsion polymerization process, and formulations containing different concentrations of allopurinol, polyethylcyanoacrylate and surfactants were investigated and analyzed in size and amount of drug entrapped. The nanoparticles obtained were less than 200 nm in size, as measured by electron microscopy and cytometry. The peak amount of allopurinol entrapped in the nanoparticles was 62.8 +/- 1.9 mu g mg(-1) of nanoparticles using 400 mu l of polyethylcyanoacrylate, 200 mu l of surfactant (Tween 20) and 20 mg of allopurinol in 50 mi of polymerization medium and the association efficiency was 100.7%. After 6 h of incubation at pH 7.4 the release of allopurinol from the nanoparticles was 7.4%, while at pH 1.2 only 3.1% was released after 4-6 h (t = 42.8, P < 0.0001). The in vitro studies, using cultures of T. cruzi epimastigotes, demonstrated considerable increases in the trypanocidal activity of the allopurinol-loaded nanoparticles in comparison with a standard solution of allopurinol (91.5 vs. 45.9%) at an allopurinol concentration of 16.7 mu g ml(-1). In addition, it was shown that the unloaded nanoparticles, by mechanisms not completely elucidated, had a trypanocidal activity similar to that of standard solutions of allopurinol. To study cytotoxicity, increasing concentrations of unloaded nanoparticles were incubated on vero-line cell cultures. The concentration that killed 50% cells was 200 mu g ml(-1), four times higher than that necessary to kill 50% of T. cruzi. It is concluded that the polyethylcyanoacrylate nanoparticles constitute a good carrier of drugs against the T. cruzi. The allopurinol loaded-nanoparticles significantly increased the trypanocidal activity in comparison to the free drug. (C) 2000 Elsevier Science B.V. All rights reserved. C1 Catholic Univ Chile, Dept Pharm, Fac Chem, Santiago 4860, Chile. Univ Granada, Inst Biotechnol, Granada, Spain. NR 30 TC 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0939-6411 J9 EUR J PHARM BIOPHARM JI Eur. J. Pharm. Biopharm. PD MAR PY 2000 VL 49 IS 2 BP 137 EP 142 PG 6 SC Pharmacology & Pharmacy GA 321PA UT ISI:000087462800006 ER PT J AU Montero, LA Molina, J Fabian, J TI Multiple minima hypersurfaces of water clusters for calculations of association energy SO INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY LA English DT Article ID THERMODYNAMIC PROPERTIES; SEMIEMPIRICAL METHODS; HYDROGEN; MODEL; CONFIGURATION; OPTIMIZATION; PARAMETERS; DYNAMICS; (H2O)8; ATOMS AB Multiple minima of water cluster hypersurfaces are explored to find thermodynamic properties by means of the corresponding partition functions of their canonical distributions. The combination of semiempirical quantum chemical procedures for calculating the cluster energies in local minima of supermolecules and the statistical thermodynamics approach for both the evaluation of macroscopic association energies and the possible reduction by average of absolute errors intrinsic to the parametrized Hamiltonian are shown to provide an appropriate model fur comparison between experimental and theoretical results. The method can explicitly take into account environmental effects due to intermolecular interaction. Water trimer and tetramer association energies of -10.9 and -14.1 kJ/mol obtained from virial coefficient calculations compare very well to the values of -10.5 and -16.4 kJ/mol, respectively, found for the theoretical association energies in this paper. (C) 2000 John Wiley & Sons, Inc. C1 Univ La Habana, Fac Quim, Lab Quim Computac & Teor, Havana 10400, Cuba. Univ Granada, Lab Modelizac & Diseno Mol, Inst Biotecnol, E-18071 Granada, Spain. Tech Univ Dresden, Inst Organ Chem, D-01062 Dresden, Germany. RP Montero, LA, Univ La Habana, Fac Quim, Lab Quim Computac & Teor, Havana 10400, Cuba. NR 27 TC 18 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 USA SN 0020-7608 J9 INT J QUANTUM CHEM JI Int. J. Quantum Chem. PD JUL 15 PY 2000 VL 79 IS 1 BP 8 EP 16 PG 9 SC Chemistry, Physical; Mathematics, Interdisciplinary Applications; Physics, Atomic, Molecular & Chemical GA 323BM UT ISI:000087545000002 ER PT J AU Sanchez, E Soto, JM Garcia, PC Lopez-Lefebre, LR Rivero, RM Ruiz, JM Romero, L TI Phenolic and oxidative metabolism as bioindicators of nitrogen deficiency in French bean plants (Phaseolus vulgaris L. cv. Strike) SO PLANT BIOLOGY LA English DT Article DE Phaseolus vulgaris; French bean; nitrogen; phenolic compounds; oxidative metabolism ID PHENYLALANINE AMMONIA-LYASE; POLYPHENOL OXIDASE; PEROXIDASE-ACTIVITY; PHENYLPROPANOID METABOLISM; SUPEROXIDE-DISMUTASE; DISEASE RESISTANCE; HYDROGEN-PEROXIDE; SALICYLIC-ACID; ZEA-MAYS; DEFENSE AB The aim of the present work was to determine the effect of abiotic stress, such as nitrogen (N) deficiency, on phenol and oxidative metabolism. In addition, we analyzed whether the response of the two metabolic processes is a good bioindicator of N deficiency in French bean plants. The N was applied to the nutrient solution in the form of NH4NO3 at 1.35 mM (N1), 2.7 mM (N2) and 5.4 mM (N3), this latter dosage being considered optimal. The results indicated that application of 1.35 and 2.70 mM of N can be defined as suboptimal or deficient, as it depressed foliar biomass of the French bean plants in our experiment. In addition, abiotic stress from the application of these N dosages stimulated the enzymes PPO, POD and CAT, and inhibited PAL and SOD activities, resulting in the lowest foliar accumulation of phenolic compounds and H2O2. C1 Univ Granada, Fac Sci, Dept Plant Biol, E-18071 Granada, Spain. Univ Chihuahua, Univ Agrotechnol Sci, Chihuahua, Mexico. RP Sanchez, E, Univ Granada, Fac Sci, Dept Plant Biol, E-18071 Granada, Spain. NR 66 TC 6 PU GEORG THIEME VERLAG PI STUTTGART PA RUDIGERSTR 14, D-70469 STUTTGART, GERMANY SN 1435-8603 J9 PLANT BIOLOGY JI Plant Biol. PD MAY PY 2000 VL 2 IS 3 BP 272 EP 277 PG 6 SC Plant Sciences GA 328TF UT ISI:000087865600003 ER PT J AU Tirado, MC Arroyo, FJ Delgado, AV Grosse, C TI Measurement of the low-frequency dielectric properties of colloidal suspensions: Comparison between different methods SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE low-frequency dielectric dispersion; dielectric properties of suspensions; impedance analyzer; polystyrene particle suspensions; calibration methods; variable spacing conductivity cells ID POLYSTYRENE PARTICLES AB A careful analysis of the main factors that affect the low-frequency dielectric measurements of conducting liquid samples is carried out. The influence of the type of the measurement cell, the calibration method, and the type of the instrument used, on the spectra obtained using the variable electrode spacing technique, is investigated. Permittivity and conductivity measurements in the 10 Hz to 10 MHz range are reported for low (sigma approximate to 0.01 S/m) and high (sigma approximate to 0.7 S/m) conductivity samples, both electrolyte solutions and polystyrene particle suspensions. Two measurement cells are evaluated: one made of glass currently used at Granada and the other made of acrylic currently used at Tucuman. Two calibration methods, the classical Short/Open correction and the quadrupolar technique (similar to the Short/Open/Load correction), are contrasted, and two impedance analyzers, the HP 4284 A and the HP 4192 A, are compared, (C) 2000 Academic Press. C1 Univ Nacl Tucuman, Dept Fis, RA-4000 San Miguel De Tucuman, Tucuman, Argentina. Univ Granada, Fac Ciencias, Dept Fis Aplicada, E-18071 Granada, Spain. Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina. RP Grosse, C, Univ Nacl Tucuman, Dept Fis, Av Independencia 1800, RA-4000 San Miguel De Tucuman, Tucuman, Argentina. NR 12 TC 16 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERFACE SCI JI J. Colloid Interface Sci. PD JUL 1 PY 2000 VL 227 IS 1 BP 141 EP 146 PG 6 SC Chemistry, Physical GA 329JB UT ISI:000087902900018 ER PT J AU Merzouki, A Ed-derfoufi, F Mesa, JM TI Contribution to the knowledge of Rifian traditional medicine. II: Folk medicine in Ksar Lakbir district (NW Morocco) SO FITOTERAPIA LA English DT Article DE ethnobotany; herbal medicine; Ksar Lakbir; Morocco AB An ethnobotanical survey of the medicinal plants used by the local population of the Ksar Lakbir district (NW Morocco) was conducted. One hundred and eighty-six species from 61 botanical families were recorded as well as their uses and modes of administration. Quantitative ethnopharmacological data (medicinal plant knowledge and use indices) were also evaluated and discussed. (C) 2000 Elsevier Science B.V. All rights reserved. C1 Univ Abdelmalek Essaadi, Fac Sci, Lab Ethnobot, Tetouan, Mexico. Bot Fac Farm, Granada 18071, Spain. Univ Mohamed I, Fac Sci, Dept Biol, Oujda, Morocco. RP Merzouki, A, Univ Abdelmalek Essaadi, Fac Sci, Lab Ethnobot, BP 2121, Tetouan, Mexico. NR 18 TC 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0367-326X J9 FITOTERAPIA JI Fitoterapia PD JUN PY 2000 VL 71 IS 3 BP 278 EP 307 PG 30 SC Chemistry, Medicinal; Pharmacology & Pharmacy GA 329KZ UT ISI:000087907300010 ER PT J AU Caballo, VE Anguiano, SA TI Personality styles and their relationship with stress-producing daily hassles SO INTERNATIONAL JOURNAL OF PSYCHOLOGY LA English DT Meeting Abstract C1 Univ Granada, E-18071 Granada, Spain. Univ Nacl Autonoma Mexico, Iztacala, Mexico. NR 0 TC 0 PU PSYCHOLOGY PRESS PI HOVE PA 27 CHURCH RD, HOVE BN3 2FA, EAST SUSSEX, ENGLAND SN 0020-7594 J9 INT J PSYCHOL JI Int. J. Psychol. PD JUN-AUG PY 2000 VL 35 IS 3-4 SI Sp. Iss. SI BP 299 EP 299 PG 1 SC Psychology, Multidisciplinary GA 337XP UT ISI:000088388802924 ER PT J AU do Carmo, M Ritore, M Ros, A TI Compact minimal hypersurfaces with index one in the real projective space SO COMMENTARII MATHEMATICI HELVETICI LA English DT Article ID MEAN-CURVATURE SURFACES; FORMS AB Let M-n in be a compact (two-sided) minimal hypersurface in a Riemannian manifold (M) over bar(n+l). It is a simple fact that if (M) over bar has positive Ricci curvature then M cannot be stable (i. e. its Jacobi operator L has index at least one). If (M) over bar = Sn+l is the unit sphere and L has index one, then it is known that nl must Le a totally geodesic equator. We prove that if (M) over bar is the real projective space Pn+1 = Sn+1/{+/-}, obtained as a metric quotient of the unit sphere, and the Jacobi operator of nd has index one, then ni is either a totally geodesic sphere or the quotient to the projective space of the hypersurface S-n1 (R-1) x S-n2(R-2) subset of Sn+1 obtained as the product of two spheres of dimensions n(1),n(2) and radius R-1, R-2, with n(1) + n(2) = n, R-1(2) + R-2(2) = 1 and n(1)R(2)(2) = n(2)R(1)(2). C1 Inst Matemat Pura & Aplicada, Rio De Janeiro, Brazil. Univ Granada, Dept Geometria & Topol, E-18071 Granada, Spain. RP do Carmo, M, Inst Matemat Pura & Aplicada, Estrada Dona Castorina 110, Rio De Janeiro, Brazil. NR 17 TC 2 PU BIRKHAUSER VERLAG AG PI BASEL PA VIADUKSTRASSE 40-44, PO BOX 133, CH-4010 BASEL, SWITZERLAND SN 0010-2571 J9 COMMENT MATH HELV JI Comment. Math. Helv. PY 2000 VL 75 IS 2 BP 247 EP 254 PG 8 SC Mathematics GA 340BZ UT ISI:000088514400004 ER PT J AU Lopez-Garcia, JJ Horno, J Gonzalez-Caballero, F Grosse, C Delgado, AV TI Dynamics of the electric double layer: Analysis in the frequency and time domains SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE electric double layer polarization; electrophoretic mobility; dielectric dispersion; time domain analysis; network method ID NETWORK THERMODYNAMICS; DIELECTRIC RESPONSE; SUSPENSIONS; PARTICLES; FIELD AB No rigorous theory of electrokinetic phenomena is conceivable without properly accounting for double layer polarization under the action of external fields. Since processes leading to such polarization need a finite time to develop, an analysis of the behavior of the quantities of interest (potential and ion concentration profiles, particle or fluid velocity, and so on) as a function of time should be extremely illustrative. In this work, we analyze how those quantities evolve in the nanosecond to microsecond time range after the application of an electric field. The network method is proposed tin which, essentially, an electric circuit simulator program is used to solve the differential equations involved, after their proper interpretation in terms of fluxes and forces) to gain information about the evolution with time of the potential, counterion, and co-ion perturbations, the particle velocity, and the fluid velocity profile. The performance of the method is first ckecked in the frequency domain, for which rigorous solutions exist, and then the procedure is used in the time domain. Reasons are discussed for the observed time dependencies of the analyzed quantities. (C) 2000 Academic Press. C1 Univ Jaen, Fac Ciencias Expt, Dept Fis, Jaen 23071, Spain. Univ Granada, Fac Ciencias, Dept Fis Aplicada, E-18071 Granada, Spain. Univ Nacl Tucuman, Inst Fis, RA-4000 San Miguel De Tucuman, Tucuman, Argentina. RP Horno, J, Univ Jaen, Fac Ciencias Expt, Dept Fis, Ed B3, Jaen 23071, Spain. NR 15 TC 18 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERFACE SCI JI J. Colloid Interface Sci. PD AUG 1 PY 2000 VL 228 IS 1 BP 95 EP 104 DI 10.1006/jcis.2000.6941 PG 10 SC Chemistry, Physical GA 340FG UT ISI:000088522000014 ER PT J AU Serrano, MF Nieto, LM Moleon, MCJ TI Culture of Azetobacter vinelandii with acetate as carbon source under oxygen limitated conditions SO AFINIDAD LA Spanish DT Article DE Azobacter vinelandii; alginate; oxygen limitation; yield coefficients; growth rate; fed-batch culture ID AZOTOBACTER-VINELANDII; DISSOLVED-OXYGEN; BATCH CULTURE AB We studied discontinuous and fed-batch cultures of Azotobacter vinelandii on acetate under oxygen limitation conditions, with the intention of using them as a Model System for the experimental study of oxygen transfer intensification methods in aerobic fermenters. Using a discontinuous culture, three series of experiments were carried out: one under the simplest conditions for the application of this system to an aerobic fermenter, with no pH control and under atmospheric nitrogen-fixing conditions; the other two series were performed with pH control and under atmospheric nitrogen-fixing conditions and with NH4Cl as the nitrogen source, respectively. We determined the overall kinetic parameters for both exponential growth and linear growth (with oxygen limitation). An increase in the stirring speed did'nt have influence on the specific growth rate but produced a higher specific oxygen and carbon source consumption rate. The nitrogen source was also seen to have an evident influence on the specific rate of consumption of the substrate, which was greater under nitrogen-fixing conditions. As regards the specific growth rate, A. vinelandii seems to prefer acetate to glucose and ammonia to atmospheric nitrogen. In a fed-batch culture, i.e. a discontinuous culture with acetate as the carbon source and using a concentrated solution of acetic acid to keep pH levels constant, two series of experiments were carried out. As the concentration of the carbon source was kept constant, we were able to analyse, independently, the damage suffered by the microorganism as it grew during variable time periods under oxygen limitation conditions. There was seen to be a diminution of mu when growth time under oxygen limitation conitions was increased. C1 Univ Granada, Dept Ingn Quim, E-18071 Granada, Spain. Univ Jaen, Dept Ingn Quim, Jaen, Spain. Univ Autonoma Estado Mexico, CIRA, Mexico City, DF, Mexico. RP Serrano, MF, Univ Granada, Dept Ingn Quim, E-18071 Granada, Spain. NR 16 TC 0 PU ASOC QUIMICOS PI BARCELONA PA INST QUIMICO SARRIA, 17 BARCELONA, SPAIN SN 0001-9704 J9 AFINIDAD JI Afinidad PD MAY-JUN PY 2000 VL 57 IS 487 BP 167 EP 174 PG 8 SC Chemistry, Multidisciplinary GA 341KP UT ISI:000088589800001 ER PT J AU Mestriner, CA Galetti, PM Valentini, SR Ruiz, IRG Abel, LDS Moreira, O Camacho, JPM TI Structural and functional evidence that a B chromosome in the characid fish Astyanax scabripinnis is an isochromosome SO HEREDITY LA English DT Article DE astyanax scabripinnis; B chromosomes; FISH; heterochromatin; isochromosome; satellite DNA ID WASP NASONIA-VITRIPENNIS; EYPREPOCNEMIS-PLORANS; CREPIS-CAPILLARIS; DNA; SEQUENCE; PISCES; GENES; ORGANIZATION; GRASSHOPPER; EVOLUTION AB Astyanax scabripinnis possesses a widespread polymorphism for metacentric B chromosomes as large as the largest chromosome pair in the A complement. On the basis of C-banding pattern, it was hypothesized that these B chromosomes are isochromosomes that have arisen by means of centromere misdivision and chromatid nondisjunction. In the present paper we test this hypothesis by analysing (i) the localization of a repetitive DNA sequence on both B chromosome arms, and (ii) synaptonemal complex formation, in order to test the functional homology of both arms. Genomic DNA digested with KpnI and analysed by gel electrophoresis showed fragments in a ladder-like pattern typical of tandemly repetitive DNA. These fragments were cloned and their tandem organization in the genome was confirmed. A 51-bp long consensus sequence, which was AT-rich (59%) and contained a variable region and two imperfect reverse sequences, was obtained. Fluorescence in situ hybridization (FISH) localized this repetitive DNA into noncentromeric constitutive heterochromatin which encompasses the terminal region of some acrocentric chromosomes, the NOR region, and interstitial polymorphic heterochromatin in chromosome 24. Most remarkably, tandem repeats were almost symmetrically placed in the two arms of the B chromosome, with the exception of two additional small clusters proximally located on the slightly longer arm. Synaptonemal complex (SC) analysis showed 26 completely paired SCs in males with 1B. The ring configuration of the B univalent persisting until metaphase I suggests that the two arms formed chiasmata. All these data provided strong support for the hypothesis that the B chromosome is an isochromosome. C1 Univ Fed Sao Carlos, Dept Genet & Evolucao, BR-13565905 Sao Carlos, SP, Brazil. UNESP, Fac Ciencias Farmaceut, Dept Ciencias Biol, BR-14801902 Araraquara, SP, Brazil. Inst Butanta, BR-05503900 Sao Paulo, Brazil. Univ Granada, Dept Genet, E-18071 Granada, Spain. RP Galetti, PM, Univ Fed Sao Carlos, Dept Genet & Evolucao, Via Washington Luiz,Km 235 Caixa Postal 676, BR-13565905 Sao Carlos, SP, Brazil. NR 29 TC 23 PU BLACKWELL SCIENCE LTD PI OXFORD PA P O BOX 88, OSNEY MEAD, OXFORD OX2 0NE, OXON, ENGLAND SN 0018-067X J9 HEREDITY JI Heredity PD JUL PY 2000 VL 85 IS 1 BP 1 EP 9 PG 9 SC Genetics & Heredity GA 347PT UT ISI:000088938900001 ER PT J AU Davalos-Pantoja, L Ortega-Vinuesa, JL Bastos-Gonzalez, D Hidalgo-Alvarez, R TI A comparative study between the adsorption of IgY and IgG on latex particles SO JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION LA English DT Article DE chicken antibodies; protein adsorption; latex particles; particle-enhanced immunoassays. ID CHICKEN ANTIBODIES; IMMUNOGLOBULIN; SURFACES; PROTEINS AB The use of egg yolk antibodies (IgY) instead of Ige from mammalian species may present several advantages in the development of routine diagnostic immunoassays, On the one hand, the animal suffering is reduced, as antibodies are obtained directly from the egg. On the other hand, the use of IyY avoids the rheumatoid factor interference. The rheumatoid factor interacts with Ige molecules in many immunoassays causing false positive results. Despite these advantages, IgY antibodies are scarcely used. As part of an aim to develop a diagnostic test based on IgY-latex agglutination, a preliminary study on some characteristics of the IgY-latrx complexes is carried out. In this work, protein adsorption and desorption, isoelectric point, electrokinetic mobility, and colloidal stability are analysed. Results are compared to those obtained by IgC. Interesting differences are observed (which mainly arise from the difference in molecular structure between TgY and IgG), suggesting that IgY is a more hydrophohic molecule than IgG. In addition, colloidal dispersions; of IgY-covered Inter particles are more stable (at pn 8) than those sensitized by IgG. C1 Biol Prod Enterprise, Carlos J Finlay Res Dept, La Habana 3, Cuba. Univ Granada, Dept Appl Phys, Biocolloid & Fluid Phys Grp, E-18071 Granada, Spain. RP Ortega-Vinuesa, JL, Biol Prod Enterprise, Carlos J Finlay Res Dept, Infanta Ave 1162, La Habana 3, Cuba. NR 31 TC 18 PU VSP BV PI ZEIST PA PO BOX 346, 3700 AH ZEIST, NETHERLANDS SN 0920-5063 J9 J BIOMATER SCI-POLYM ED JI J. Biomater. Sci.-Polym. Ed. PY 2000 VL 11 IS 6 BP 657 EP 673 PG 17 SC Engineering, Biomedical; Materials Science, Biomaterials; Polymer Science GA 347VJ UT ISI:000088949600008 ER PT J AU Daza, MC Dobado, JA Molina, JM Villaveces, JL TI Structure and bonding of H2O2 center dot center dot center dot X complexes with (X = NO+, CN-, HCN, HNC, CO) SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID SET SUPERPOSITION ERROR; UREA-HYDROGEN-PEROXIDE; AB-INITIO; THERMODYNAMIC PROPERTIES; VIBRATIONAL FREQUENCIES; MOLECULES; ENERGY; DIMERS; DFT; SURFACES AB Accurate B3LYP and MP2 theoretical calculations, with the 6-311+G(3df,2p) basis set, have been performed on different complexes, between hydrogen peroxide (HP) and NO+ (1), CN- (2-4), HCN (5-8), HNC (9-12) and CO (13 and 14). According to the binding energy obtained, the charged complexes (1-4) have large binding-energy values, yielding only cyclic stationary points. However, the neutral complexes (5-14) showed medium to small binding-energy values with linear and cyclic arrangements, the cyclic structures being transition states and the linear complexes minima, on their corresponding PESs. The "atoms in molecules'' theory (AIM) was used to characterize the intermolecular interactions, ranging from electrostatic interactions for the HP ... NO+ complex (1) to different types of hydrogen bonding for 2 to 14. For all the structures, the binding energy was corrected for the BSSE by the counterpoise (CP) method. Moreover, calculations were performed also on the BSSE-corrected PESs. C1 Univ Granada, Inst Biotecnol, Grp Modelizac & Diseno Mol, Granada, Spain. Univ Nacl Colombia, Fac Ciencias, Lab Invest Basicas, Santa Fe de Bogota, Colombia. RP Daza, MC, Univ Granada, Inst Biotecnol, Grp Modelizac & Diseno Mol, Campus Fuentenueva, Granada, Spain. NR 44 TC 3 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD,, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2000 VL 2 IS 18 BP 4089 EP 4094 PG 6 SC Chemistry, Physical; Physics, Atomic, Molecular & Chemical GA 353RK UT ISI:000089289100021 ER PT J AU Neo, DM Moreira, O Camacho, JPM TI Altitudinal variation for B chromosome frequency in the characid fish Astyanax scabripinnis SO HEREDITY LA English DT Article DE Astyanax scabripinnis; B chromosomes; heterochromatin; isochromosome ID MYRMELEOTETTIX-MACULATUS ORTHOPTERA; POPULATION CYTOGENETICS; ALLIUM-SCHOENOPRASUM; CREPIS-CAPILLARIS; PISCES; POLYMORPHISM; ACRIDIDAE; PARANAE; DRIVE AB The analysis of three populations of the characid fish Astyanax scabripinnis located at different altitudes along the same stream has revealed the presence of a macro B chromosome in two high-altitude populations (1800 m and 1920 m) but its absence from a low-altitude population (700 m). Because the stream flows through very rugged mountains, with numerous falls ensuring that any gene flow occurs downstream only, the absence of B chromosomes from the low-altitude populations is best interpreted in the light of the parasitic theory of B chromosome evolution. Under this theory, we would expect B chromosomes to be more frequent where environmental conditions are more favourable for the species, because Bs are best tolerated there. The widespread presence of these B chromosomes in numerous Brazilian river headwaters, which are the preferred habitat for this species, support this possibility. C1 Univ Fed Sao Carlos, Dept Genet & Evolucao, BR-13565905 Sao Carlos, SP, Brazil. Univ Granada, Dept Genet, E-18071 Granada, Spain. RP Moreira, O, Univ Fed Sao Carlos, Dept Genet & Evolucao, CP 676, BR-13565905 Sao Carlos, SP, Brazil. NR 34 TC 14 PU BLACKWELL SCIENCE LTD PI OXFORD PA P O BOX 88, OSNEY MEAD, OXFORD OX2 0NE, OXON, ENGLAND SN 0018-067X J9 HEREDITY JI Heredity PD AUG PY 2000 VL 85 IS 2 BP 136 EP 141 PG 6 SC Genetics & Heredity GA 355QU UT ISI:000089397000006 ER PT J AU Sanchez, E Soto, JM Garcia, PC Lopez-Lefebre, LR Rivero, RM Ruiz, JM Romero, L TI Phenolic compounds and oxidative metabolism in green bean plants under nitrogen toxicity SO AUSTRALIAN JOURNAL OF PLANT PHYSIOLOGY LA English DT Article DE green bean; Leguminosae; nitrogen toxicity; oxidative metabolism; Phaseolus vulgaris; phenolic bioactivity ID PHENYLALANINE AMMONIA-LYASE; SUPEROXIDE-DISMUTASE; PEROXIDASE-ACTIVITY; POLYPHENOL OXIDASE; HYDROGEN-PEROXIDE; SALICYLIC-ACID; WINTER-WHEAT; DEFENSE; STRESS; LEAVES AB The objective of the present work was to determine the effect of nitrogen toxicity on the metabolism of phenolic compounds and of oxidative stress in Phaseolus vulgaris L. cv. Strike. The nitrogen was applied to the nutrient solution as NH4NO3 at 5.4, 10.8, 16.2, 21.6 and 27 mM. The results indicate that the application of 27 mM N can be defined as toxic, as it drastically depressed growth of the green bean plants in our experiment. In addition, the abiotic stress from the application of this N dosage inhibited the enzymes polyphenol oxidase, peroxidase and catalase, and stimulated phenylalanine ammonia-lyase and superoxide dismutase activities. The result was foliar accumulation of phenolic compounds and hydrogen peroxide (H2O2). The accumulation of H2O2 also apparently caused a reduction in biomass production. C1 Univ Granada, Fac Sci, Dept Plant Biol, E-18071 Granada, Spain. Univ Chihuahua, Dept Agrotechnol Sci, Chihuahua 31170, Mexico. RP Romero, L, Univ Granada, Fac Sci, Dept Plant Biol, E-18071 Granada, Spain. NR 52 TC 7 PU C S I R O PUBLISHING PI COLLINGWOOD PA 150 OXFORD ST, PO BOX 1139, COLLINGWOOD, VICTORIA 3066, AUSTRALIA SN 0310-7841 J9 AUST J PLANT PHYSIOL JI Aust. J. Plant Physiol. PY 2000 VL 27 IS 10 BP 973 EP 978 PG 6 SC Plant Sciences GA 362QU UT ISI:000089790400011 ER PT J AU Cavallaro, ZI Bertollo, LAC Perfectti, F Camacho, JPM TI Frequency increase and mitotic stabilization of a B chromosome in the fish Prochilodus lineatus SO CHROMOSOME RESEARCH LA English DT Article DE B chromosome; drive; mitotic instability; neutralization; parasite chromosome; Prochilodus lineatus ID LOCUSTA-MIGRATORIA; ACCUMULATION; DRIVE AB Six populations of the fish Prochilodus lineatus were analysed for B chromosome frequency. A study of spermatogenesis revealed the absence of B accumulation during the stages analysed. In one of the populations, from the Mogi-Guacu river where samples have been analysed over a ten-year period, B chromosome frequency doubled between 1979-80 and 1987-89, whereas no additional changes were noticed in samples collected in 1991-92. The analysis of B chromosome mitotic instability, manifested by intraindividual variation in B chromosome number, indicated a very significant decrease during this time period. This suggests that, in the 1980s, this population was in the final stage of B chromosome invasion, and that there was a possible causal relationship between B mitotic instability and the accumulation mechanism that caused its frequency increase. Mitotic stabilization might thus be a way by which a mitotically unstable B chromosome may become neutralized. C1 Univ Granada, Dept Genet, E-18071 Granada, Spain. Univ Fed Sao Carlos, Dept Genet & Evol, BR-13565905 Sao Carlos, SP, Brazil. RP Camacho, JPM, Univ Granada, Dept Genet, E-18071 Granada, Spain. NR 20 TC 7 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0967-3849 J9 CHROMOSOME RES JI Chromosome Res. PD OCT PY 2000 VL 8 IS 7 BP 627 EP 634 PG 8 SC Biochemistry & Molecular Biology; Genetics & Heredity GA 365XP UT ISI:000089976000008 ER PT J AU Vespignani, A Dickman, R Munoz, MA Zapperi, S TI Absorbing-state phase transitions in fixed-energy sandpiles SO PHYSICAL REVIEW E LA English DT Review ID SELF-ORGANIZED CRITICALITY; CHARGE-DENSITY WAVES; ANNIHILATING RANDOM-WALKS; TANG-WIESENFELD SANDPILE; ABELIAN SANDPILE; RENORMALIZATION-GROUP; DIRECTED PERCOLATION; CRITICAL EXPONENTS; QUENCHED DISORDER; CRITICAL-BEHAVIOR AB We study sandpile models as closed systems, with the conserved energy density zeta playing the role of an external parameter. The critical energy density zeta (c) marks a nonequilibrium phase transition between active and absorbing states. Several fixed-energy sandpiles are studied in extensive simulations of stationary and transient properties, as well as the dynamics of roughening in an interface-height representation. Our primary goal is to identify the universality classes of such models, in hopes of assessing the validity of two recently proposed approaches to sandpiles: a phenomenological continuum Langevin description with absorbing states, and a mapping to driven interface dynamics in random media. C1 Abdus Salam Int Ctr Theoret Phys, ICTP, I-34100 Trieste, Italy. Univ Fed Minas Gerais, ICEx, Dept Fis, BR-30161970 Belo Horizonte, MG, Brazil. Univ Granada, Inst Carlos Theoret & Computat Phys 1, E-18071 Granada, Spain. Univ Granada, Dept Electromagnet & Fis Mat, E-18071 Granada, Spain. Univ Roma La Sapienza, Dipartimento Fis, Sez Roma 1, INFM, I-00185 Rome, Italy. RP Vespignani, A, Abdus Salam Int Ctr Theoret Phys, ICTP, POB 586, I-34100 Trieste, Italy. NR 107 TC 69 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD OCT PY 2000 VL 62 IS 4 PN Part A BP 4564 EP 4582 PG 19 SC Physics, Fluids & Plasmas; Physics, Mathematical GA 365XY UT ISI:000089976800018 ER PT J AU Glick, P Fiske, ST Mladinic, A Saiz, JL Abrams, D Masser, B Adetoun, B Osagie, JE Akande, A Alao, A Brunner, A Willemsen, TM Chipeta, K Dardenne, B Dijksterhuis, A Wigboldus, D Eckes, T Six-Materna, I Exposito, F Moya, M Foddy, M Kim, HJ Lameiras, M Sotelo, MJ Mucchi-Faina, A Romani, M Sakall, N Udegbe, B Yamamoto, M Ui, M Ferreira, MC Lopez, WL TI Beyond prejudice as simple antipathy: Hostile and benevolent sexism across cultures SO JOURNAL OF PERSONALITY AND SOCIAL PSYCHOLOGY LA English DT Article ID AMBIVALENT SEXISM; PSYCHOLOGY; NEOSEXISM; WOMEN AB The authors argue that complementary hostile and benevolent components of sexism exist across cultures. Male dominance creates hostile sexism IHS), but men's dependence on women fosters benevolent sexism (BS)-subjectively positive attitudes that put women on a pedestal but reinforce their subordination. Research with 15,000 men and women in 19 nations showed that (a) HS and BS are coherent constructs that correlate positively across nations, but (b) HS predicts the ascription of negative and BS the ascription of positive traits to women, (c) relative to men, women are more likely to reject HS than BS, especially when overall levels of sexism in a culture are high, and (d) national averages on BS and HS predict gender inequality across nations. These results challenge prevailing notions of prejudice as an antipathy in that BS tan affectionate, patronizing ideology) reflects inequality and is a cross-culturally pervasive complement to HS. C1 Lawrence Univ, Dept Psychol, Appleton, WI 54912 USA. Princeton Univ, Dept Psychol, Princeton, NJ 08544 USA. Pontificia Univ Catolica Chile, Dept Psychol, Santiago, Chile. Univ Kent, Dept Psychol, Canterbury, Kent, England. Alcorn State Univ, Lorman, MS 39096 USA. Potchefstroom Univ Christian Higher Educ, Sch Behav Sci, Potchefstroom, South Africa. Univ Botswana, Dept Counselling, Gaborone, Botswana. Tilburg Univ, Dept Womens Studies, NL-5000 LE Tilburg, Netherlands. Univ Liege, Dept Psychol, Liege, Belgium. Univ Nijmegen, Dept Social Psychol, Nijmegen, Netherlands. Univ Wuppertal, Dept Psychol, Wuppertal, Germany. Univ Kiel, Dept Psychol, Kiel, Germany. Univ Granada, Dept Psychol, E-18071 Granada, Spain. La Trobe Univ, Sch Psychol, Bundoora, Vic, Australia. Ewha Womans Univ, Dept Psychol, Seoul, South Korea. Univ Vigo, Dept Psychosocial & Educ Anal, Vigo, Spain. Univ Perugia, Inst Pedag, I-06100 Perugia, Italy. Middle E Tech Univ, Dept Psychol, Ankara, Turkey. Univ Ibadan, Dept Psychol, Ibadan, Nigeria. Univ Tsukuba, Dept Psychol, Tsukuba, Ibaraki 305, Japan. Univ Estado Rio De Janeiro, Inst Psicol, Rio De Janeiro, Brazil. Univ Konrad Lorenz, Dept Psychol, Bogota, Colombia. RP Glick, P, Lawrence Univ, Dept Psychol, Appleton, WI 54912 USA. NR 39 TC 100 PU AMER PSYCHOLOGICAL ASSOC PI WASHINGTON PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 USA SN 0022-3514 J9 J PERSONAL SOC PSYCHOL JI J. Pers. Soc. Psychol. PD NOV PY 2000 VL 79 IS 5 BP 763 EP 775 PG 13 SC Psychology, Social GA 369YW UT ISI:000165096200007 ER PT J AU Santoyo-Gonzalez, F Torres-Pinedo, A Barria, CS TI An efficient synthesis of bis(calix[4]arenes) bis(crown ether)-substituted calix[4]arenes, aza-crown calix[4]arenes, and thiaza-crown calix[4]arenes SO EUROPEAN JOURNAL OF ORGANIC CHEMISTRY LA English DT Article DE bis(calixarenes); calixarenes; crown compounds; isothiocyanates; macrocycles ID MONOCROWN-BISCROWN INTERCONVERSION; MOLECULAR RECOGNITION; 1,3-ALTERNATE CONFORMATION; MEMBRANE-TRANSPORT; ANION COMPLEXATION; CYCLIC DISULFIDES; METAL-BINDING; CALIXARENES; RECEPTORS; CHEMISTRY AB The easy transformation of 5,11,17,23-tetra-tert-butyl-25,27-bis(aminoethoxy)-26,28-dihydroxycalix[ 4]arene (2) into 5,11,17,23-tetra-tert-butyl-26,28-dihydroxy-25,27-bis(2-iso-thiocyanoeth oxy)calix[4]arene (3) and 5,11,17,23-tetra-tert-butyl-25,27-bis(chloroacetamidoethoxy)-26 calix[4]arene (4) has been exploited for the development of an efficient and expeditious synthesis of a variety of calix[4]arene derivatives [bis(calix[4]arenes), bis(crown ether) calix[4]arenes, aza-crown calix[4]arenes, and thiaza-crown calix[4]arenes]. The functionality of compounds 2 and 3 allowed the formation of intramolecular bridges, leading to capped calix[4]arenes (compounds 5, 10, and 14) as well as to the construction of double calix[4]arene units by means of spacers containing thiourea or amide-sulfur groups (compounds 6 and 15, respectively). In addition, the bis(isothiocyanate) derivative 3 gave access to a high-yield preparation of heteroditopic bis(crown ether) calix[4]arenes (7-9) from commercial amino crown ethers. C1 Univ Granada, Fac Ciencias, Dept Quim Organ, Inst Biotecnol, E-18071 Granada, Spain. Univ Chile, Fac Ciencias Quim & Farmaceut, Dept Quim Organ & Fis Quim, Univ Granada, Santiago, Chile. RP Santoyo-Gonzalez, F, Univ Granada, Fac Ciencias, Dept Quim Organ, Inst Biotecnol, Campus Fuentenueva S-N, E-18071 Granada, Spain. NR 78 TC 6 PU WILEY-V C H VERLAG GMBH PI BERLIN PA PO BOX 10 11 61, D-69451 BERLIN, GERMANY SN 1434-193X J9 EUR J ORG CHEM JI Eur. J. Org. Chem. PD NOV PY 2000 IS 21 BP 3587 EP 3593 PG 7 SC Chemistry, Organic GA 371ET UT ISI:000165165800010 ER PT J AU Barrero, AF Herrador, MM Arteaga, P Lara, A Cortes, M TI Chemical composition of the essential oil from Drimys winteri Forst.Wood SO JOURNAL OF ESSENTIAL OIL RESEARCH LA English DT Article DE Drimys winteri; Winteraceae; essential oil composition; alpha-pinene; alpha-cubenene ID DRYMIS-WINTERI; SESQUITERPENE; EXTRACT; BARKS AB GC/MS analysis of the essential oil from the wood of Drimys winteri Forst. allowed the identification of 56 components and showed a high content of alpha -pinene (14.9%) and alpha -cubebene (10.9%). C1 Univ Granada, Fac Ciencias, Dept Quim Organ, Inst Biotecnol, E-18071 Granada, Spain. Pontificia Univ Catolica Chile, Fac Quim, Santiago, Chile. RP Barrero, AF, Univ Granada, Fac Ciencias, Dept Quim Organ, Inst Biotecnol, Campus Fuentenueva S-N, E-18071 Granada, Spain. NR 21 TC 4 PU ALLURED PUBL CORP PI CAROL STREAM PA 362 S SCHMALE RD, CAROL STREAM, IL 60188-2787 USA SN 1041-2905 J9 J ESSENT OIL RES JI J. Essent. Oil Res. PD NOV-DEC PY 2000 VL 12 IS 6 BP 685 EP 688 PG 4 SC Chemistry, Applied; Food Science & Technology GA 374ME UT ISI:000165348300008 ER PT J AU Albano, EV Marro, J TI Monte Carlo study of the CO-poisoning dynamics in a model for the catalytic oxidation of CO SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID IRREVERSIBLE SURFACE-REACTION; TRANSITIONS AB The poisoning dynamics of the Ziff-Gulari-Barshad [Phys. Rev. Lett. 56, 2553 (1986)] model, for a monomer-dimer reaction, is studied by means of Monte Carlo simulations. Studies are performed within the monomer absorbing state and close to the coexistence point. Analysis of the average poisoning time (tau (p)) allows us to propose a phenomenological scaling approach in which tau (p) diverges logarithmically with the lattice side and algebraically with the distance to the coexistence point. The structure of monomer clusters during poisoning is analyzed and compared with observations at coexistence. (C) 2000 American Institute of Physics. [S0021-9606(00)51346-4]. C1 Univ Granada, Fac Ciencias, Inst Carlos I Fis Teor & Computac, E-18071 Granada, Spain. Natl Univ La Plata, CONICET, INIFTA, CIC Bs As, RA-1900 La Plata, Argentina. RP Albano, EV, Univ Granada, Fac Ciencias, Inst Carlos I Fis Teor & Computac, E-18071 Granada, Spain. NR 25 TC 11 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD DEC 8 PY 2000 VL 113 IS 22 BP 10279 EP 10283 PG 5 SC Physics, Atomic, Molecular & Chemical GA 378LB UT ISI:000165584900049 ER PT J AU Shilov, VN Delgado, AV Gonzalez-Caballero, E Horno, J Lopez-Garcia, JJ Grosse, C TI Polarization of the electrical double layer. Time evolution after application of an electric field SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE relaxation processes; electrophoretic mobility; induced dipole moment; electrical double layer polarization; concentration polarization ID ELECTROPHORETIC MOBILITY; PARTICLE AB Electrophoresis is one of the electrokinetic phenomena most widely investigated, both from a fundamental point of view and as a research tool in academia and industry. However, the dependence between electrophoretic mobility and zeta potential is, in a general case, far from simple, because of the many physical processes involved. In this work, we first describe qualitatively and (in some cases) quantitatively the time behavior of the dipole moment induced in the electrical double layer by an applied electric field. Further, a simple relationship is deduced between the dipole moment and the electrophoretic mobility. Through the analysis of the time dependence of the former, it is possible to resolve the different contributions to the stationary values of the mobility Three characteristic relaxation times are distinguished in the time evolution of the dipole moment: tau (H) (the time needed for hydrodynamic flows to be established), tau (MW) (time for ionic electromigration to develop), and tau (VD) (after this time, diffusion hows are established in the system, and the double layer polarization is complete). This means that different mechanisms are operating on the double layer for different times after the application of the field, and that computing the mobility at such different times is equivalent to calculating the steady-state electrophoretic mobility under different approximations. A comparison is shown between estimated and computed mobility values as functions of time and of zeta potential, confirming the validity of the asymptotic calculations. (C) 2000 Academic Press. C1 Univ Granada, Fac Ciencias, Dept Fis Aplicada, E-18071 Granada, Spain. Natl Acad Sci Ukraine, Inst Biocolloid Chem, Kiev, Ukraine. Univ Jaen, Fac Ciencias Expt, Dept Fis, Jaen 23071, Spain. Univ Nacl Tucuman, Dept Fis, RA-4000 San Miguel De Tucuman, Tucuman, Argentina. RP Delgado, AV, Univ Granada, Fac Ciencias, Dept Fis Aplicada, E-18071 Granada, Spain. NR 18 TC 24 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERFACE SCI JI J. Colloid Interface Sci. PD DEC 1 PY 2000 VL 232 IS 1 BP 141 EP 148 DI 10.1006/jcis.2000.7152 PG 8 SC Chemistry, Physical GA 378RT UT ISI:000165598000019 ER PT J AU de Armas, HN Perez, H Blaton, NM Peeters, OM De Ranter, CJ Lopez, JM Moreno, JM TI Crystal structure of a novel tertiary phosphine coordination complex: dichlorobis(tribenzylphosphine)nickel(II) SO JOURNAL OF CHEMICAL CRYSTALLOGRAPHY LA English DT Article DE phosphine; nickel(II) complexes; crystal structure AB The title compound dichlorobis(tribenzylphosphine)nickel(II), Ni[P(CH2C6H5)(3)](2)Cl-2, belongs to a type of tertiary phosphine coordination complex, M(PR3)(2)X-2. There are two molecules in the unit cell which do not appear to interact chemically. Both molecules have a trans-square planar configuration with each nickel atom on a center of symmetry. Three benzyl groups are bonded to each phosphorus atom as rotors in a propeller, and the threefold axis is along the P-Ni bond,which has a mean length of 2.23(1) Angstrom. Crystal data: C42H42Cl2NiP2, Triclinic, space group P (1) over bar, a = 10.4892(15) b = 10.5249(12) c 19.453(2) Angstrom, alpha = 83.872(8), beta = 76.839(9), gamma = 62.241(8)degrees, V = 1850.5(4) Angstrom (3), Z = 2. There is an intramolecular hydrogen bond between the C3 and C11 atoms. C1 Katholieke Univ Leuven, Fac Farmaceut Wetenschappen, Lab Analyt Chem Med Fysicochem, B-3000 Louvain, Belgium. Univ La Habana, Fac Quim, Dept Quim Inorgan, La Habana 10400, Cuba. Univ Granada, Fac Quim, Dept Quim Inorgan, Granada 17001, Spain. RP de Armas, HN, Katholieke Univ Leuven, Fac Farmaceut Wetenschappen, Lab Analyt Chem Med Fysicochem, Van Evenstr 4, B-3000 Louvain, Belgium. NR 14 TC 3 PU KLUWER ACADEMIC/PLENUM PUBL PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1074-1542 J9 J CHEM CRYSTALLOGRAPHY JI J. Chem. Crystallogr. PD MAR PY 2000 VL 30 IS 3 BP 173 EP 176 PG 4 SC Crystallography; Spectroscopy GA 379AF UT ISI:000165618200005 ER PT J AU Dickman, R Munoz, MA TI Interface scaling in the contact process SO PHYSICAL REVIEW E LA English DT Article ID SELF-ORGANIZED CRITICALITY; SURFACE-REACTION MODEL; REGGEON FIELD-THEORY; DIRECTED PERCOLATION; PHASE-TRANSITIONS; GROWTH-PROCESSES; UNIVERSALITY; LATTICE; STATE AB A correspondence between lattice models with absorbing states and models of pinned interfaces in random media can be established by defining local height variables h(x,t) as integrals of the activity at point x up to time t. Within this context we study the interface representation of a prototypical model with absorbing states, thr contact process, in dimensions 1-3. Simulations confirm the scaling relation beta (W)=1-theta between the interface-width growth exponent beta (W) and the exponent theta governing the decay of the order parameter. A scaling property of the height distribution, which serves as the basis for this relation, is also verified. The height-height correlation function shows clear signs of anomalous scaling, In accord with Lopez analysis [Phys. Rev. Lett. 83, 4594 (1999)], but no evidence of multiscaling. C1 Univ Fed Minas Gerais, ICEx, Dept Fis, BR-30161970 Belo Horizonte, MG, Brazil. Univ Granada, Inst Carlos Theoret & Computat Phys 1, E-18071 Granada, Spain. Univ Granada, Dept Electromagnetismo & Fis Mat, E-18071 Granada, Spain. RP Dickman, R, Univ Fed Minas Gerais, ICEx, Dept Fis, BR-30161970 Belo Horizonte, MG, Brazil. NR 42 TC 18 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD DEC PY 2000 VL 62 IS 6 PN Part A BP 7632 EP 7637 PG 6 SC Physics, Fluids & Plasmas; Physics, Mathematical GA 383JM UT ISI:000165879400017 ER PT J AU Schmitt, A Odriozola, G Moncho-Jorda, A Callejas-Fernandez, J Martinez-Garcia, R Hidalgo-Alvarez, R TI Multiple contact kernel for diffusionlike aggregation SO PHYSICAL REVIEW E LA English DT Article ID LIMITED COLLOID AGGREGATION; COAGULATION; CLUSTERS; EQUATION AB The Brownian kernel is usually assumed to describe pure diffusion-limited cluster-aggregation processes. In this work, we show that this assumption is correct for simulated data. For experimental data, however, significant deviations were observed although the system was aggregated at an electrolyte concentration well above the critical coagulation concentration. This indicates that residual cluster-cluster interactions are not completely absent in real experimental systems. In order to improve the description of the experimental data, we developed a kernel that considers a monomer-monomer sticking probability explicitly and accounts for the possibility of multiple monomer-monomer contacts in the cluster collision area. The proposed kernel agrees excellently with the experimental cluster-size distribution and the corresponding scaling function. C1 Univ Granada, Dept Fis Aplicada, E-18071 Granada, Spain. Univ Republ Montevideo, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. RP Hidalgo-Alvarez, R, Univ Granada, Dept Fis Aplicada, Campus Fuentenueva, E-18071 Granada, Spain. NR 30 TC 21 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD DEC PY 2000 VL 62 IS 6 PN Part B BP 8335 EP 8343 PG 9 SC Physics, Fluids & Plasmas; Physics, Mathematical GA 383JN UT ISI:000165879500018 ER PT J AU Ceballos-Salobrena, A Gaitan-Cepeda, LA Ceballos-Garcia, L Lezama-Del Valle, D TI Oral lesions in HIV/AIDS patients undergoing highly active antiretroviral treatment including protease inhibitors: A new face of oral AIDS? SO AIDS PATIENT CARE AND STDS LA English DT Article ID HUMAN-IMMUNODEFICIENCY-VIRUS; HIV-INFECTED PATIENTS; KAPOSIS-SARCOMA; DNA-SEQUENCES; MANIFESTATIONS; THERAPY; MEN AB The objective of this work was to assess the prevalence of human immunodeficiency virus-related oral lesions (HIV-ROL) in HIV-positive/acquired immunodeficiency syndrome (AIDS) patients receiving highly active antiretroviral therapy (HAART) including HIV-protease inhibitors. One hundred fifty-five (154) AIDS patients (69 intravenous drug users [IDU], 53 heterosexuals, 29 males who have sex with males, 1 transfused, and 2 of unknown contagious source) receiving HAART, were examined. We found the following prevalences: HIV-ROL 53.2%; oral candidiasis 34.4%; hairy leucoplakia 26.6%; xerostomia 15.5%; herpes simplex labialis 1. 9%; HIV/periodontitis-gingivits 0.6%. No cases of Kaposi's sarcoma were observed. The highest prevalence of HIV-ROL was found in the IDU group, and in patients with viral load more than 10,000 copies and CD4(+) cell count less than 200. Using our historical controls, this suggests that the prevalence of all oral lesions, particularly oral candidiasis, herpes simplex labiali, Kaposi's sarcoma, and periodontal disease has decreased more than 30% after the institution of HAART. C1 Univ Granada, Fac Odontol, Granada, Spain. Univ Nacl Autonoma Mexico, Fac Odontol, Mexico City 04510, DF, Mexico. RP Gaitan-Cepeda, LA, Mani 471 Casa 1 Pedregal de San Nicolas T, Mexico City 14900, DF, Mexico. NR 34 TC 31 PU MARY ANN LIEBERT INC PUBL PI LARCHMONT PA 2 MADISON AVENUE, LARCHMONT, NY 10538 USA SN 1087-2914 J9 AIDS PATIENT CARE STDS JI Aids Patient Care STDS PD DEC PY 2000 VL 14 IS 12 BP 627 EP 635 PG 9 SC Public, Environmental & Occupational Health; Infectious Diseases GA 383UD UT ISI:000165900500003 ER PT J AU Mavrogiannis, LA Antonopoulou, I Baxova, A Kutilek, S Kim, CA Sugayama, SM Salamanca, A Wall, SA Morriss-Kay, GM Wilkie, AOM TI Haploinsufficiency of the human homeobox gene ALX4 causes skull ossification defects SO NATURE GENETICS LA English DT Article ID FORAMINA PARIETALIA PERMAGNA; MULTIPLE EXOSTOSES; FAMILY; CLONING AB Inherited defects of skull ossification often manifest as symmetric parietal foramina (PFM; MIM 168500). We previously identified mutations of MSX2 in non-syndromic PFM and demonstrated genetic heterogeneity(1). Deletions of 11p11-p12 (proximal 11p deletion syndrome, P11pDS; MIM 601224; ref. 2) are characterized by multiple exostoses, attributable to haploinsufficiency of EXT2 (refs. 3,4) and PFM. Here we identify ALX4, which encodes a paired-related homeodomain transcription factor, as the PFM disease gene in P11pDS. C1 John Radcliffe Hosp, Inst Mol Med, Oxford OX3 9DU, England. Univ Oxford, Dept Human Anat & Genet, Oxford, England. Charles Univ, Fac Med 1, Dept Paediat, Prague, Czech Republic. Charles Univ, Fac Med 1, Dept Med Genet, Prague, Czech Republic. Univ Sao Paulo, Fac Med, Hosp Clin, Inst Crianca, Sao Paulo, Brazil. Univ Granada, Hosp Clin S Cecilio, Dept Obstet & Ginecol, Granada, Spain. Radcliffe Infirm, Craniofacial Unit, Oxford OX2 6HE, England. Dept Clin Genet, Oxford, England. RP Wilkie, AOM, John Radcliffe Hosp, Inst Mol Med, Oxford OX3 9DU, England. NR 15 TC 57 PU NATURE AMERICA INC PI NEW YORK PA 345 PARK AVE SOUTH, NEW YORK, NY 10010-1707 USA SN 1061-4036 J9 NAT GENET JI Nature Genet. PD JAN PY 2001 VL 27 IS 1 BP 17 EP 18 PG 2 SC Genetics & Heredity GA 388NP UT ISI:000166187900008 ER PT J AU Davalos-Pantoja, L Ortega-Vinuesa, JL Bastos-Gonzalez, D Hidalgo-Alvarez, R TI Colloidal stability of IgG- and IgY-coated latex microspheres SO COLLOIDS AND SURFACES B-BIOINTERFACES LA English DT Article DE chicken antibodies; colloidal stability; hydration forces; protein adsorption ID HYDRATION FORCES; ELECTROLYTE-SOLUTIONS; CHICKEN ANTIBODIES; MICA SURFACES; PARTICLES; DLVO; AGGREGATION; ADSORPTION; PROTEINS; IMMUNOREACTIVITY AB The stabilization of antibody-latex complexes at high salt concentration is an event that cannot be explained by the widespread DLVO theory. Adsorption of antibodies on polystyrene latex usually leads to a loss in colloidal stability. However, after the expected particle aggregation induced by an increase in ionic strength, an 'anomalous' restabilization occurs when the electrolyte concentration increases even more. This non-DLVO behaviour can be explained taking into account the hydration forces, which become significant in hydrophilic surfaces. This restabilization has already been observed in different protein latex complexes. In the present work, a study on the stability patterns of polystyrene particles covered independently by mammalian and chicken antibodies has been performed. This study reveals that avian antibodies present a more hydrophobic surface than that of mammalian antibodies. In addition, it has been possible to obtain some information about the molecular orientation of the adsorbed antibodies from the stability experiments. This information has been corroborated by an immunoreactivity study. (C) 2001 Elsevier Science B.V, All rights reserved. C1 Biol Prod Enterprise Carlos J Finlay Res Dept, Habana 3, Cuba. Univ Granada, Dept Appl Phys, Biocolloid & Fluid Phys Grp, E-18071 Granada, Spain. NR 37 TC 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-7765 J9 COLLOID SURFACE B JI Colloid Surf. B-Biointerfaces PD FEB PY 2001 VL 20 IS 2 BP 165 EP 175 PG 11 SC Biophysics; Chemistry, Physical; Materials Science, Biomaterials GA 389JZ UT ISI:000166236000008 ER PT J AU Hauswirth, L Perez, J Romon, P TI Embedded minimal ends of finite type SO TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY LA English DT Article DE minimal surface; finite type; helicoid ID SURFACES; CURVATURE AB We prove that the end of a complete embedded minimal surface in R-3 with infinite total curvature and finite type has an explicit Weierstrass representation that only depends on a holomorphic function that vanishes at the puncture. Reciprocally, any choice of such an analytic function gives rise to a properly embedded minimal end E provided that it solves the corresponding period problem. Furthermore, if the flux along the boundary vanishes, then the end is C-0-asymptotic to a Helicoid. We apply these results to proving that any complete embedded one-ended minimal surface of finite type and infinite total curvature is asymptotic to a Helicoid, and we characterize the Helicoid as the only simply connected complete embedded minimal surface of finite type in R-3. C1 Univ Fortaleza, Dept Math, BR-60811341 Fortaleza, Ceara, Brazil. Univ Granada, Dept Geometria & Topol, E-18071 Granada, Spain. Univ Marne Vallee, Equipe Anal & Math Appl, F-93166 Noisy Le Grand, France. RP Hauswirth, L, Univ Marne Vallee, Equipe Anal & Math Appl, 2 Rue Butte Verte, F-93166 Noisy Le Grand, France. NR 12 TC 4 PU AMER MATHEMATICAL SOC PI PROVIDENCE PA 201 CHARLES ST, PROVIDENCE, RI 02940-2213 USA SN 0002-9947 J9 TRANS AMER MATH SOC JI Trans. Am. Math. Soc. PY 2001 VL 353 IS 4 BP 1335 EP 1370 PG 36 SC Mathematics GA 392QF UT ISI:000166422300003 ER PT J AU De la Mora, A Oloriz, F Gonzalez-Arreola, C TI 'Autochthonous' bivalve assemblages and palaeoecologic interpretation in the upper Jurassic-Lowermost Cretaceous La Caja Formation from the Canon de San Matias (Zacatecas, Mexico) SO COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES LA English DT Article DE bivalves; taphonomy; palaeoecology; Upper Jurassic-Lowermost Cretaceous; Mexico AB The present research approaches the precise palaeoecologic interpretation based on the recognition of 12 'autochthonous' bivalve assemblages among 52 registered from the Upper Jurassic-Lowermost Cretaceous La Caja Formation in the Canon de San Matias section (Mexican Altiplano). Fine-grained deposits together with the near-exclusive record of suspension-feeders are considered the evidence for low-energy and nutrient-rich environments. The presence of oxygen-dependent bivalves, mainly Buchia and Lucina, supports the interpretation of oxygenation as a major factor controlling ecology and therefore the composition of the 'autochthonous' bivalve assemblages studied. Significant changes in the composition of bivalve assemblages show no relation between fluctuations in ecological factors and background depositional conditions. (C) 2000 Academie des sciences / Editions scientifiques et medicates Elsevier SAS. C1 Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. Natl Autonomous Univ Mexico, Inst Geol, Dept Paleontol, Mexico City 04510, DF, Mexico. RP Oloriz, F, Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. NR 30 TC 0 PU EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER PI PARIS CEDEX 15 PA 23 RUE LINOIS, 75724 PARIS CEDEX 15, FRANCE SN 1251-8050 J9 C R ACAD SCI SER II A JI Comptes Rendus Acad. Sci. Ser II-A PD DEC 15 PY 2000 VL 331 IS 11 BP 741 EP 747 PG 7 SC Geosciences, Multidisciplinary GA 395BY UT ISI:000166559900008 ER PT J AU Oloriz, F Villasenor, AB Gonzalez-Arreola, C TI Geographic control on phenotype expression. The case of Hybonoticeras mundulum (Oppel) from the Mexican Altiplano SO LETHAIA LA English DT Review DE Ammonitina; Hybonoticeras; Mexico; palaeobiogeography; Upper Jurassic ID GENUS HYBONOTICERAS; STRATIGRAPHY; AMMONITES; DISPERSAL; TECTONICS; EXAMPLES; IBERIA; NORTH; FAUNA; SOUTH AB Hybonoticeras mundulum (Oppel) (m) s.s. is reported from the Mexican Altiplano on the basis of material collected bed-by-bed in sections in the States of Durango and Zacatecas. The known range of this species in the Mexican Altiplano is interpreted to be uppermost Kimmeridgian (upper to uppermost Beckeri Zone) to lowermost Tithonian (basal to lower Hybonotum Zone). The Mexican specimens studied are the most complete and valuable collection of H. mundulum (Oppel) s.s. known from a given area, and reveal that Mexican populations show phenotypic features different from European ones. Vicariant events accord with data available about the areal and biostratigraphic distribution of this species, as well as with the combination of allocyclic and autocyclic factors influencing Mexican seas, the breaking of populations rather than colonization events, and the impoverished ammonite assemblages showing endemic traits within the stratigraphic interval studied. C1 Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. Univ Nacl Autonoma Mexico, Inst Geol, Dept Paleontol, Mexico City 04510, DF, Mexico. RP Oloriz, F, Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Av Fuentenueva S-N, Granada 18002, Spain. NR 175 TC 4 PU TAYLOR & FRANCIS AS PI OSLO PA CORT ADELERSGT 17, PO BOX 2562, SOLLI, 0202 OSLO, NORWAY SN 0024-1164 J9 LETHAIA JI Lethaia PD SEP PY 2000 VL 33 IS 3 BP 157 EP 174 PG 18 SC Paleontology GA 397PT UT ISI:000166704600003 ER PT J AU Ramirez, M Gallardo, EM Souto, AS Weissheimer, C Gil, A TI Plasma fatty-acid composition and antioxidant capacity in low birth-weight infants fed formula enriched with n-6 and n-3 long-chain polyunsaturated fatty acids from purified phospholipids SO CLINICAL NUTRITION LA English DT Article DE lipids; infant nutrition; LCP; arachidonic acid; docosahexaenoic acid ID MARINE-OIL SUPPLEMENTATION; VISUAL-ACUITY DEVELOPMENT; FED BREAST-MILK; 1ST YEAR GROWTH; PRETERM INFANTS; TERM INFANTS; DOCOSAHEXAENOIC ACID; ARACHIDONIC-ACID; GESTATIONAL-AGE; LIPID CLASSES AB Objective: To determine whether a formula containing n - 6 and n - 3 long-chain polyunsaturated fatty acids (LCP) from purified phospholipids increases the content of 20:4n - 6 and 22:6n -3 of plasma lipids and modifies the plasma antioxidant capacity in low-birth-weight infants. Study design: Seventeen infants were fed a conventional formula for low birth-weight infants (F), and 17 a formula containing n - 6 and n -3 LCP from purified pig-brain phospholipids (LCP-F). Fourteen infants receiving human milk from a human milk bank were used as a reference (HM). Growth index were measured and blood samples were taken at entry and after 15 days and 30 days of feeding. Results: In infants fed LCP-F the levels of 22:6n - 3 in total plasma lipids and in plasma phospholipids and triglycerides were higher than in infants fed F and closer to the levels of HM group throughout the study. Docosahexaenoic acid concentration in total plasma lipids was 3.46 +/- 0.19 mg/dl in infants fed LCP-F and 2.08 +/- 0.20 in infants fed F after 15 days of feeding (P < 0.001), and 3.83 +/- 0.30 and 2.15 +/- 0.20 in infants fed LCP-F and F respectively, after 30 days of feeding (P < 0.001). The concentration of 20:4n - 6 in the LCP-F was significantly higher than in the F group at 15 and 30 days of feeding. Plasma antioxidant capacity did not differ significantly between the study groups. Conclusion: Feeding low birth-weight infants a formula containing LCP phospholipids results in an increase of n - 3 and n - 6 LCP in plasma towards that of infants fed human milk. (C) 2000 Harcourt Publishers Ltd. C1 Abbott Labs, Dept Res & Dev, Granada 18004, Spain. Clin Porto Alegre Hosp, Porto Alegre, RS, Brazil. Univ Granada, Dept Biochem & Mol Biol, E-18071 Granada, Spain. RP Ramirez, M, Abbott Labs, Dept Res & Dev, Camino Purchil 68, Granada 18004, Spain. NR 45 TC 9 PU CHURCHILL LIVINGSTONE PI EDINBURGH PA JOURNAL PRODUCTION DEPT, ROBERT STEVENSON HOUSE, 1-3 BAXTERS PLACE, LEITH WALK, EDINBURGH EH1 3AF, MIDLOTHIAN, SCOTLAND SN 0261-5614 J9 CLIN NUTR JI Clin. Nutr. PD FEB PY 2001 VL 20 IS 1 BP 69 EP 76 DI 10.1054/clnu.2000.0163 PG 8 SC Nutrition & Dietetics GA 401FD UT ISI:000166915900012 ER PT J AU Odriozola, G Moncho-Jorda, A Schmitt, A Callejas-Fernandez, J Martinez-Garcia, R Hidalgo-Alvarez, R TI A probabilistic aggregation kernel for the computer-simulated transition from DLCA to RLCA SO EUROPHYSICS LETTERS LA English DT Article ID REACTION-LIMITED AGGREGATION; CLUSTER SIZE DISTRIBUTION; COLLOIDAL AGGREGATION; STOCHASTIC SIMULATION; KINETICS; DYNAMICS AB A simple sticking probability model is used for deducing a kernel capable to describe the kinetics of computer-simulated irreversible aggregation processes. Not only the diffusion- and reaction-limited aggregation regimes were fitted but also the whole transition region. The deduced kernel establishes lambda = 0 for the entire range of sticking probabilities and helps to understand how irreversible cluster-cluster aggregation works. C1 Univ Granada, Dept Fis Aplicada, Grp Fis Fluidos & Biocoloides, E-18071 Granada, Spain. Univ Republica, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. RP Odriozola, G, Univ Granada, Dept Fis Aplicada, Grp Fis Fluidos & Biocoloides, Campus Fuentenueva, E-18071 Granada, Spain. NR 21 TC 31 PU E D P SCIENCES PI LES ULIS CEDEXA PA 7, AVE DU HOGGAR, PARC D ACTIVITES COURTABOEUF, BP 112, F-91944 LES ULIS CEDEXA, FRANCE SN 0295-5075 J9 EUROPHYS LETT JI Europhys. Lett. PD MAR PY 2001 VL 53 IS 6 BP 797 EP 803 PG 7 SC Physics, Multidisciplinary GA 410ZX UT ISI:000167474600015 ER PT J AU Albano, EV Munoz, MA TI Numerical study of persistence in models with absorbing states SO PHYSICAL REVIEW E LA English DT Article ID SURFACE-REACTION MODEL; ZERO-TEMPERATURE DYNAMICS; GLOBAL PERSISTENCE; ISING-MODELS; DIRECTED PERCOLATION; SURVIVAL PROBABILITY; FINITE-TEMPERATURE; BLOCK PERSISTENCE; EXPONENT; DIFFUSION AB Extensive Monte Carlo simulations are performed in order to evaluate both the local(theta (l)) and global(theta (g)) persistence exponents in the Ziff-Gulari-Barshad (ZGB) [Phys. Rev. Lett. 56, 2553 (1986)] irreversible reaction model. At the second-order irreversible phase transition (IPT) we find that both the local and the global persistence exhibit power-law behavior with a crossover between two different time regimes. On the other hand, at the ZGB first-order IPT, active sites are short lived and the persistence decays more abruptly; it is not clear whether it shows power-law behavior or not. In order to analyze universality issues, we have also studied another model with absorbing states, the contact process, and evaluated the local persistence exponent in dimensions from 1 to 4. A striking apparent superuniversality is reported: the local persistence exponent seems to coincide in both one- and two-dimensional systems. Some other aspects of persistence in systems with absorbing states are also analyzed. C1 Natl Univ La Plata, CONICET, Inst Invest Fisicoquim Teor & Aplicadas, CIC, RA-1900 La Plata, Argentina. Univ Granada, Inst Carlos Theoret & Computat Phys 1, E-18071 Granada, Spain. Univ Granada, Dept E & Fis Mat, E-18071 Granada, Spain. RP Albano, EV, Natl Univ La Plata, CONICET, Inst Invest Fisicoquim Teor & Aplicadas, CIC, Sucursal 4,Casilla Correo 16, RA-1900 La Plata, Argentina. NR 41 TC 10 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2001 VL 6303 IS 3 PN Part 1 AR 031104 PG 7 SC Physics, Fluids & Plasmas; Physics, Mathematical GA 413QU UT ISI:000167623900011 ER PT J AU Capitan-Vallvey, LF Duque, O Miron-Garcia, G Checa-Moreno, R TI Determination of protein content using a solid phase spectrophotometric procedure SO ANALYTICA CHIMICA ACTA LA English DT Article DE protein determination; lowry procedure; glass paper; solid phase procedure AB We used a conditioned fiberglass paper to perform the reaction and to retain the reaction products of the Lowry method for protein content. The analytical parameter was obtained by measuring directly the absorbance of the support. Different influencing chemical, support related and instrumental variables were studied and optimized. The usual asymptotic behavior of the analytical function response was improved here by linearizing using a quadratic function. Using 10 mul of sample, the applicable concentration range was between 25 and 200 mg l(-1), with a detection limit of 17 mg l(-1) and a R,S.D. around 5%. The method was applied to the determination of protein in eggwhite samples coming from different birds. The method proposed here for protein content shows higher sensitivity than solution methods, less dependence on protein nature and higher stability of the species fixed on the support. (C) 2001 Elsevier Science B.V. All rights reserved. C1 Univ Granada, Dept Analyt Chem, E-18071 Granada, Spain. Univ La Habana, IMRE, Havana, Cuba. Minist Agr Fisheries & Food, Lab Nacl Sanidad & Prod Anim, Granada 18320, Spain. RP Capitan-Vallvey, LF, Univ Granada, Dept Analyt Chem, E-18071 Granada, Spain. NR 7 TC 14 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0003-2670 J9 ANAL CHIM ACTA JI Anal. Chim. Acta PD APR 4 PY 2001 VL 433 IS 1 BP 155 EP 163 PG 9 SC Chemistry, Analytical GA 421HL UT ISI:000168058900016 ER PT J AU Ortiz, GG Crespo-Lopez, ME Moran-Moguel, C Garcia, JJ Reiter, RJ Acuna-Castroviejo, D TI Protective role of melatonin against MPTP-induced mouse brain cell DNA fragmentation and apoptosis in vivo SO NEUROENDOCRINOLOGY LETTERS LA English DT Article DE melatonin; apoptosis; DNA fragmentation; Parkinson's disease; MPTP ID NITRIC-OXIDE SYNTHASE; PARKINSONS-DISEASE; OXIDATIVE STRESS; LIPID-PEROXIDATION; RESPIRATORY-CHAIN; SUBSTANTIA NIGRA; PC12 CELLS; COMPLEX-I; TOXICITY; NEURONS AB OBJECTIVES: 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) is a neurotoxin that induces a Parkinsonian-type syndrome in animals which is similar to Parkinson's disease in humans. MPTP toxicity partially depends on the production of free radicals which in turn play a key role in the apoptotic death of neurons. In the present study melatonin, a potent free radical scavenger with antiapoptotic properties, was given to determine whether it would reduce oxidative stress in mice treated with MPTP. MATERIALS AND METHODS:Male mice were given MPTP with or without melatonin and the brain was studied either 6h, 24h, 7 days or 15 days after the last MPTP injection. RESULTS: The results show that melatonin counteracted in vivo MPTP-induced apoptosis in midbrain neurons at 6 and 24 h after MPTP treatment, and partially prevented apoptosis at 7 and 15 days after MPTP administration. MPTP treatment also produced time-dependent cell damage, whereas melatonin reduced the percentage of damaged cells at all time points, the effect being most evident at 15 days after treatment. Moreover, melatonin counteracted MPTP-dependent DNA fragmentation in the midbrain and striatum at 7 and 15 days after drug administration. CONCLUSION: These results support a role for melatonin in protecting neurons against MPTP toxicity in vivo, and suggest that its antiapoptotic action is one of the mechanisms by which melatonin protects neuronal cells from neurotoxic insults. C1 IMSS, CIBO, Div Neurociencias, Lab Desarrollo Envejecimiento, Guadalajara 44340, Jalisco, Mexico. Ctr Invest & Asistencia Tecnol & Diseno Estado Ja, CIATEJ, Div Patol & Biotecnol Ambiental, Guadalajara, Jalisco, Mexico. IMSS, CIBO, Div Mol Med, Guadalajara 44340, Jalisco, Mexico. Univ Zaragoza, Fac Med, Dept Fisiol & Farmacol, E-50009 Zaragoza, Spain. Univ Texas, Hlth Sci Ctr, Dept Cellular & Struct Biol, San Antonio, TX 78284 USA. Univ Granada, Inst Biotecnol, Dept Fisiol, E-18071 Granada, Spain. RP Ortiz, GG, IMSS, CIBO, Div Neurociencias, Lab Desarrollo Envejecimiento, Sierra Mojada 800, Guadalajara 44340, Jalisco, Mexico. NR 55 TC 21 PU MAGHIRA & MAAS PUBLICATIONS PI STOCKHOLM PA PO BOX 26132, S-100 41 STOCKHOLM, SWEDEN SN 0172-780X J9 NEUROENDOCRINOL LETT JI Neuroendocrinol. Lett. PD APR PY 2001 VL 22 IS 2 BP 101 EP 108 PG 8 SC Endocrinology & Metabolism; Neurosciences GA 428NR UT ISI:000168468200005 ER PT J AU Roewer, L Krawczak, M Willuweit, S Nagy, M Alves, C Amorim, A Anslinger, K Augustin, C Betz, A Bosch, E Caglia, A Carracedo, A Corach, D Dekairelle, AF Dobosz, T Dupuy, BM Furedi, S Gehrig, C Gusmao, L Henke, J Henke, L Hidding, M Hohoff, C Hoste, B Jobling, MA Kargel, HJ de Knijff, P Lessig, R Liebeherr, E Lorente, M Martinez-Jarreta, B Nievas, P Nowak, M Parson, W Pascali, VL Penacino, G Ploski, R Rolf, B Sala, A Schmidt, U Schmitt, C Schneider, PM Szibor, R Teifel-Greding, J Kayser, M TI Online reference database of European Y-chromosomal short tandem repeat (STR) haplotypes SO FORENSIC SCIENCE INTERNATIONAL LA English DT Article DE database; Y chromosome; STR; haplotype; forensics AB The reference database of highly informative Y-chromosomal short tandem repeat (STR haplotypes (YHRD), available online at http://ystr.charite.de, represents the largest collection of male-specific genetic profiles currently available for European populations. By September 2000, YHRD contained 4688 9-locus (so-called "minimal") haplotypes, 40% of which have been extended further to include two additional loci. Establishment of YHRD has been facilitated by the joint efforts of 31 forensic and anthropological institutions. All contributing laboratories have agreed to standardize their Y-STR haplotyping protocols and to participate in a quality assurance exercise prior to the inclusion of any data. In view of its collaborative character, and in order to put YHRD to its intended use, viz, the support of forensic caseworkers in their routine decision-making process, the database has been made publicly available via the Internet in February 2000. Online searches for complete or partial Y-STR haplotypes from evidentiary or non-probative material can be performed on a non-commercial basis, and yield observed haplotype counts as well as extrapolated population frequency estimates. In addition, the YHRD website provides information about the quality control test, genotyping protocols, haplotype formats and informativity, population genetic analysis, literature references, and a list of contact addresses of the contributing laboratories. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved. C1 Humboldt Univ, Inst Rechtsmed, D-10115 Berlin, Germany. Cardiff Univ, Inst Med Genet, Cardiff C14 4XN, S Glam, Wales. IPATIMUP, P-4200 Oporto, Portugal. Inst Rechtsmed Munchen, D-80337 Munich, Germany. Inst Rechtsmed, D-22529 Hamburg, Germany. Landeskriminalamt Baden Wurttemberg, D-70372 Stuttgart, Germany. Univ Leicester, Dept Genet, Leicester LE1 7RH, Leics, England. Univ Cattolica Sacro Cuore, Inst Med Legale, I-00168 Rome, Italy. Fac Med, Inst Legal Med, Santiago De Compostela 15705, Spain. Univ Buenos Aires, Fac Farm & Bioquim, Serv Huellas Digitales Genet, RA-1113 Buenos Aires, DF, Argentina. Inst Natl Criminalist & Criminol, B-1120 Brussels, Belgium. Med Acad Wroclaw, Inst Forens Med, PL-50368 Wroclaw, Poland. Univ Oslo, Rikshosp, Inst Forens Med, N-0027 Oslo, Norway. Inst Forens Sci, H-1903 Budapest, Hungary. Inst Med Legale Geneve & Lausanne, CH-1211 Geneva 4, Switzerland. Inst Blutgruppenforsch, D-50672 Cologne, Germany. Univ Cologne, Inst Rechtsmed, D-50823 Cologne, Germany. Univ Munster, Inst Rechtsmed, D-48149 Munster, Germany. Landeskriminalamt Sachsen Anhalt, D-39124 Magdeburg, Germany. Leiden Univ, Med Ctr, Forens Lab DNA Res, MGC Dept Human & Clin Genet, NL-2300 RA Leiden, Netherlands. Univ Leipzig, Inst Rechtsmed, D-4103 Leipzig, Germany. Landeskriminalamt Berlin, D-12101 Berlin, Germany. Univ Granada, Fac Med, Dept Legal Med, E-18071 Granada, Spain. Univ Zaragoza, Dept Forens Med, E-50009 Zaragoza, Spain. Med Acad Warsaw, Dept Forens Med, PL-02007 Warsaw, Poland. Innsbruck Univ, Inst Gerichtl Med, A-6020 Innsbruck, Austria. Univ Freiburg Klinikum, Inst Rechtsmed, D-79104 Freiburg, Germany. Univ Magdeburg, Inst Rechtsmed, D-39112 Magdeburg, Germany. Bayer Landeskriminalamt, D-80636 Munich, Germany. Max Planck Inst Evolutionare Anthropol, Abt Evolutionare Genet, D-4103 Leipzig, Germany. RP Roewer, L, Humboldt Univ, Inst Rechtsmed, Hannoversche Str 6, D-10115 Berlin, Germany. NR 15 TC 79 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0379-0738 J9 FORENSIC SCI INT JI Forensic Sci.Int. PD MAY 15 PY 2001 VL 118 IS 2-3 BP 106 EP 113 PG 8 SC Medicine, Legal GA 429GL UT ISI:000168507700001 ER PT J AU Araujo, SMSR Pompolo, SG Perfectti, F Camacho, JPM TI Integration of a B chromosome into the A genome of a wasp SO PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES LA English DT Article DE B chromosomes; genomic parasitism; Trypoxylon albitarse ID GRASSHOPPER EYPREPOCNEMIS-PLORANS; SUPERNUMERARY CHROMOSOMES; POPULATION; MAIZE; POLYMORPHISM; HYMENOPTERA; EVOLUTION AB B chromosomes are genome symbionts, the presence of which in many eukaryote species is explained, in most cases, by their violation of Mendelian rules, usually based on meiotic or mitotic instability, leading to their accumulation in the germ line (drive). However, B chromosome integration into the genome as a regular member of the chromosome set should imply the loss of drive. A possible way of bypassing this difficulty is to regularize meiosis when the B chromosome is frequent in the population, in order to yield gametes with one B chromosome. In diploid organisms, this task needs to be achieved in the two sexes, but in haplodiploids the problem simplifies to only the diploid sex. We have found, to the authors knowledge, the first evidence of a B chromosome that is regularizing its meiotic behaviour and limiting its number to one B chromosome per haploid genome, the same dosage as the standard (A) chromosomes, in the solitary wasp Trypoxylon albitarse. It suggests a possible mechanism for B chromosome integration as a regular member of the chromosome complement. C1 Univ Granada, Fac Ciencias, Dept Genet, E-18071 Granada, Spain. Univ Fed Vicosa, Dept Biol Geral, BR-36571000 Vicosa, MG, Brazil. Univ Estadual Campinas, Dept Biol Celular, BR-13083 Campinas, SP, Brazil. RP Camacho, JPM, Univ Granada, Fac Ciencias, Dept Genet, E-18071 Granada, Spain. NR 29 TC 10 PU ROYAL SOC LONDON PI LONDON PA 6 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 0962-8452 J9 PROC ROY SOC LONDON SER B JI Proc. R. Soc. Lond. Ser. B-Biol. Sci. PD JUN 7 PY 2001 VL 268 IS 1472 BP 1127 EP 1131 PG 5 SC Biology GA 443TN UT ISI:000169356900004 ER PT J AU Sanchez, E Soto, JM Uvalle, JX Hernandez, AP Ruiz, JM Romero, L TI Chemical treatments in "Golden Delicious Spur" fruits in relation to russeting and nutritional status SO JOURNAL OF PLANT NUTRITION LA English DT Article ID APPLE; SET; GIBBERELLINS; DAMINOZIDE; QUALITY; GA4+7 AB The impact of chemical products on mineral nutritional status and russeting in 'Golden Delicious Spur' was studied. In addition, we sought to define the nutrients responsible for russeting in order to avoid imbalances in their concentrations in the fruit. Lime-sulphur (lime and sulphur, T1), ProVide (gibberellic acid GA(4+7), T2), calcium nitrate (8.5% N and 11.5% Ca, T3), Microthiol Special (micronized wettable sulphur at 80%, T4), Packhard (8% Ca, 6% carboxylic acid, 0.5%B, T5), and Dithane (ethylene-bis dithiocarbamate of manganese 62%, Mn 16% and Zn 2%, T6) were applied to apple trees at the onset of flowering, at petal drop, and at the onset of fruit development. The ProVide and Microthiol treatments reduced the damaged fruit area and the percentage of damaged fruits in comparison to control (trees without application, T0). The application of calcium nitrate and Dithane increased the percentage of damaged area in relation to control, whereas the use of Packhard increased the percentage of fruits with russeting. In conclusion, our results indicate that russeting is more influenced by the formulation of the chemical products than by the nutrient content in the fruits, although we found a highly significant reduction and inversely proportional relationship between the Mn concentrations and the appearance of russeting. C1 Univ Granada, Fac Ciencias, Dept Biol Vegetal, E-18071 Granada, Spain. Univ Autonoma Chihuahua, Fac Ciencias Agrotecnol, Chihuahua 31150, Mexico. RP Sanchez, E, Univ Granada, Fac Ciencias, Dept Biol Vegetal, E-18071 Granada, Spain. NR 35 TC 4 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 USA SN 0190-4167 J9 J PLANT NUTR JI J. Plant Nutr. PY 2001 VL 24 IS 1 BP 191 EP 202 PG 12 SC Plant Sciences GA 445CK UT ISI:000169440400014 ER PT J AU Vera-Villarroel, PE Buela-Casal, G TI Relationships between anxiety and attributional style SO REVISTA MEXICANA DE PSICOLOGIA LA Spanish DT Article DE anxiety; attributional style ID LEARNED HELPLESSNESS; DEPRESSION AB Concepts of controllability and uncontrollability have been important variables of the models that attempt to explain the origin and maintenance of depressive disorders. Attributional styles have been considered as a way to evaluate how the perception of controllability of events and depression relate to each other. In recent years, these variables have gained importance in the study of anxiety disorders. Similarly, several recent studies show that many similarities exist between anxiety disorders and depression. We can expect, then, that there exists some relationship between attributional styles and anxiety. The goal of this study was to evaluate several attributional variables and anxiety level. The sample included 79 women between 20 and 29 years of age. Levenson's Attributive Style Questionnaire and Spielberger's State Trait Anxiety Inventory was administered. Correlational analysis, regression analysis and comparisons between subjects with different levels of anxiety and attributional variables were conducted. The most significant result indicates that there are differences between subjects with high and low trait anxiety levels on attributions of external and random control. C1 Univ Miguel de Cervantes Univ Santiago, Santiago, Chile. Univ Granada, E-18071 Granada, Spain. RP Vera-Villarroel, PE, Dario Urzua 1610,Dept 604, Santiago, Chile. NR 15 TC 2 PU SOCIEDAD MEXICANA PSICOLOGIA PI TLALPAN PA APARTADO POSTAL 22-211, TLALPAN 14000, MEXICO SN 0185-6073 J9 REV MEX PSICOL JI Rev. Mex. Psicol. PD DEC PY 2000 VL 17 IS 2 BP 137 EP 142 PG 6 SC Psychology, Multidisciplinary GA 449GU UT ISI:000169676600004 ER PT J AU Guevara, M Garcia, JLP Santa-Barbara, ES TI Self-control and prospective memory: Comparison of work and daily life SO REVISTA MEXICANA DE PSICOLOGIA LA Spanish DT Meeting Abstract C1 Univ Guanajuato, Guanajuato, Mexico. Univ Granada, Granada, Spain. NR 0 TC 0 PU SOCIEDAD MEXICANA PSICOLOGIA PI TLALPAN PA APARTADO POSTAL 22-211, TLALPAN 14000, MEXICO SN 0185-6073 J9 REV MEX PSICOL JI Rev. Mex. Psicol. PD JAN PY 2001 VL 18 IS 1 BP 14 EP 14 PG 1 SC Psychology, Multidisciplinary GA 449GV UT ISI:000169676700030 ER PT J AU Pagano, S Alvarez, JC Entrala, C Lorente, JA Lorente, M Budowle, B Villanueva, E TI Uruguayan population data for eight STR loci (Using the PowerPlex 1.2(TM) kit) SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE CSF1PO; TPOX; TH01; D16S539; D7S820; D13S317; D5S818; vWA; PowerPlex; uruguay; population genetics; DNA typing C1 Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, E-18012 Granada, Spain. Policia Tecn Uruguay, DNA, Lab Criminalist DNA, Montevideo, RO, Uruguay. Fed Bur Invest Acad, FBI Lab, Quantico, VA 22135 USA. RP Lorente, JA, Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, Av Madrid 2, E-18012 Granada, Spain. NR 1 TC 3 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD JAN PY 2001 VL 46 IS 1 BP 178 EP 178 PG 1 SC Medicine, Legal GA 451JA UT ISI:000169797900031 ER PT J AU Gangitano, DA Juvenal, GJ Lorente, JA Budowle, B Padula, RA TI Population data on eight STR loci in Buenos aires (Argentina) SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE forensic science; DNA typing; population genetics; short tandem; Argentina C1 CONICET, CNEA, Nucl Biochem Div, RA-1033 Buenos Aires, DF, Argentina. Univ Granada, Dept Legal Med, Lab Genet Identificat, E-18071 Granada, Spain. Fed Bur Invest Acad, Quantico, VA 22135 USA. NR 2 TC 1 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD JAN PY 2001 VL 46 IS 1 BP 183 EP 183 PG 1 SC Medicine, Legal GA 451JA UT ISI:000169797900033 ER PT J AU Cordon, O Herrera, F Zwir, I TI Fuzzy modeling by hierarchically built fuzzy rule bases SO INTERNATIONAL JOURNAL OF APPROXIMATE REASONING LA English DT Article ID GENETIC ALGORITHMS; LOGIC; CONTROLLERS; EXAMPLES AB Although Mamdani-type fuzzy rule-based systems (FRBSs) became successfully performing clearly interpretable fuzzy models, they still have some lacks related to their accuracy when solving complex problems. A variant of these kinds of systems, which allows to perform a more accurate model representation, are the so-called approximate FRBSs, This alternative representation still cannot avoid the problems concerning the fuzzy rule learning methods, which as prototype identification algorithms, try to extract those approximate rules from the object problem space. In this paper we deal with the previous problems, viewing fuzzy models as a class of local modeling approaches which attempt to solve a complex problem by decomposing it into a number of simpler subproblems with smooth transitions between them. In order to develop this class of models, we first propose a common framework to characterize available approximate fuzzy rule learning methods, and later we modify it by introducing a fuzzy rule base hierarchical learning methodology (FRB-HLM). This methodology is based on the extension of the simple building process of the fuzzy rule base of FRBSs in a hierarchical way, in order to make the system more accurate. This flexibilization will allow us to have fuzzy rules with different degrees of specificity, and thus to improve the modeling of those problem subspaces where the former models have bad performance, as a refinement. This approach allows us not to have to assume a fixed number of rules and to integrate the good local behavior of the hierarchical model with the global model, ensuring a good global performance. (C) 2001 Elsevier Science Inc. All rights reserved. C1 Univ Granada, ETS Ingn Informat, Dept Comp Sci & Artificial Intelligence, Granada 18071, Spain. Univ Buenos Aires, Dept Comp Sci, RA-1428 Buenos Aires, DF, Argentina. RP Herrera, F, Univ Granada, ETS Ingn Informat, Dept Comp Sci & Artificial Intelligence, Avda Andalucia 38, Granada 18071, Spain. NR 40 TC 2 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 USA SN 0888-613X J9 INT J APPROX REASONING JI Int. J. Approx. Reasoning PD JUN PY 2001 VL 27 IS 1 BP 61 EP 93 PG 33 SC Computer Science, Artificial Intelligence GA 453KD UT ISI:000169914300003 ER PT J AU Wills-Toro, LA TI Trefoil symmetry III. The full clover extension SO JOURNAL OF MATHEMATICAL PHYSICS LA English DT Article AB We aim to approach a trefoil symmetry involving (Z(4)xZ(4);q)-graded parameters, multiplets of generators of integer spin <2 with naive dimensions in the interval [0,1]. The resulting full clover extension involves as particular subalgebras the minimal clover extensions previously obtained. We address the introduction of further scalar, dimensionless multiplets, and central charges. They could provide connections among external and internal symmetries, perhaps after some graded symmetry breaking. (C) 2001 American Institute of Physics. C1 Univ Hawaii Manoa, Dept Math, Honolulu, HI 96822 USA. Univ Antioquia, Dept Fis, Medellin, Colombia. Univ Granada, Dept Fis Fis Teor & Cosmos, E-18071 Granada, Spain. RP Wills-Toro, LA, Univ Hawaii Manoa, Dept Math, 2565 Mall, Honolulu, HI 96822 USA. NR 5 TC 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0022-2488 J9 J MATH PHYS-NY JI J. Math. Phys. PD AUG PY 2001 VL 42 IS 8 BP 3947 EP 3964 PG 18 SC Physics, Mathematical GA 453RF UT ISI:000169929700044 ER PT J AU Diaz-Garcia, JA Gutierrez-Jaimez, R TI The expected value of zonal polynomials SO TEST LA English DT Article DE generalized Wishart distribution; invariant symmetric polynomials; multivariate non-central Beta distribution; zonal polynomials AB In this article we study the expected value of a zonal polynomial and of the Product of r greater than or equal to 1 zonal polynomials with respect to a symmetric function. As special cases, me find the expected values of a zonal polynomial with respect to a generalized Wishart distribution and to a class of multivariate non-centred beta distributions. C1 Univ Autonoma Agr Antonio Narro, Dept Estad & Calculo, Saltillo, Coahuila, Mexico. Univ Granada, Dept Estad & Invest Operat, E-18071 Granada, Spain. RP Diaz-Garcia, JA, Univ Autonoma Agr Antonio Narro, Dept Estad & Calculo, 25315 Buenavista, Saltillo, Coahuila, Mexico. NR 11 TC 3 PU SOCIEDAD ESTADISTICA INVESTIGACION OPERATIVA PI MADRID PA HORTALEZA 104, 2 IZDA, 28004 MADRID, SPAIN SN 1133-0686 J9 TEST JI Test PD JUN PY 2001 VL 10 IS 1 BP 133 EP 145 PG 13 SC Statistics & Probability GA 456BF UT ISI:000170061700019 ER PT J AU Odriozola, G Tirado-Miranda, M Schmitt, A Lopez, FM Callejas-Fernandez, J Martinez-Garcia, R Hidalgo-Alvarez, R TI A light scattering study of the transition region between diffusion- and reaction-limited cluster aggregation SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE colloids; diffusion- and reaction-limited cluster aggregation; static and dynamic light scattering ID SALT-INDUCED AGGREGATION; COLLOID AGGREGATION; SIZE DISTRIBUTION; COAGULATION; KINETICS; MODEL; LATTICES; EQUATION AB Two limiting regimes for colloidal particle aggregation are well described in the literature: diffusion-limited cluster aggregation and reaction-limited cluster aggregation. Between these two limiting regimes, a vast transition region is expected. In this paper, the transition region is studied by means of static and dynamic light scattering. Therefore, a system of latex particles is aggregated at different electrolyte concentrations. The time dependence of the average diffusion coefficient is fitted considering the Brownian kernel and the kernel proposed by Schmitt et al. [Phys. Rev. E 62, 8335 (2000)]. The first fits the experimental data only at high electrolyte concentrations while the latter, which considers multiple cluster-cluster contacts, is found to fit the complete set of experimental data. (C) 2001 Academic Press. C1 Univ Granada, Fac Ciencias, Dept Fis Aplicada, E-18071 Granada, Spain. Univ Republ, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. RP Hidalgo-Alvarez, R, Univ Granada, Fac Ciencias, Dept Fis Aplicada, E-18071 Granada, Spain. NR 35 TC 25 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERFACE SCI JI J. Colloid Interface Sci. PD AUG 1 PY 2001 VL 240 IS 1 BP 90 EP 96 PG 7 SC Chemistry, Physical GA 456ZD UT ISI:000170111900012 ER PT J AU Moncho-Jorda, A Odriozola, G Martinez-Lopez, F Schmitt, A Hidalgo-Alvarez, R TI The DLCA-RLCA transition arising in 2D-aggregation: simulations and mean field theory SO EUROPEAN PHYSICAL JOURNAL E LA English DT Article ID CLUSTER-CLUSTER AGGREGATION; REACTION-LIMITED AGGREGATION; COLLOIDAL AGGREGATION; STOCHASTIC SIMULATION; SIZE DISTRIBUTION; 2 DIMENSIONS; KINETICS; FRACTALS AB A sticking probability model based on the average cluster lifetime is employed for deducing a kernel capable to describe the kinetics of computer simulated irreversible aggregation processes in two dimensions. The deduced kernel describes not only the time evolution of the cluster size distribution for diffusion limited aggregation (DLCA) and reaction limited aggregation (RLCA) but also for the entire transition region between both regimes. The model predicts a crossover to diffusion limited cluster aggregation for all sticking probabilities at long aggregation times. The time needed for reaching the DLCA limit increases for decreasing sticking probability. C1 Univ Granada, Fac Ciencias, Dept Fis Aplicada, E-18071 Granada, Spain. Univ Republica, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. RP Moncho-Jorda, A, Univ Granada, Fac Ciencias, Dept Fis Aplicada, Campus Fuentenueva, E-18071 Granada, Spain. NR 32 TC 11 PU SPRINGER-VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 1292-8941 J9 EUR PHYS J E JI Eur. Phys. J. E PD JUL PY 2001 VL 5 IS 4 BP 471 EP 480 PG 10 SC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Polymer Science GA 459EW UT ISI:000170238900009 ER PT J AU Sanchez-Quevedo, MC Ceballos, G Garcia, JM Rodriquez, IA de Ferraris, MEG Campos, A TI Scanning electron microscopy and calcification in amelogenesis imperfecta in anterior and posterior human teeth SO HISTOLOGY AND HISTOPATHOLOGY LA English DT Article DE amelogenesis imperfecta; prism patterns; calcification; scanning microscopy; X-ray microprobe analysis; anterior teeth; posterior teeth ID ENAMEL ULTRASTRUCTURE; PROBE MICROANALYSIS; OTOLITHIC MEMBRANE; TOOTH; LOCALIZATION; EXPRESSION; APOPTOSIS AB Teeth fragments from members of a family clinically and genetically diagnosed as having amelogenesis imperfecta were studied by scanning electron microscopy and X-ray microprobe analysis to establish the morphological patterns and the quantitative concentration of calcium in the enamel of anterior (canine, incisor) and posterior (premolar and molar) teeth. The prism patterns in the enamel of teeth from both regions were parallel or irregularly decussate, with occasional filamentous prisms accompanied by small, irregularly rounded formations. Prismless enamel showed the R- and P-type patterns. Calcium levels in enamel of amelogenesis imperfecta and control teeth differed significantly between anterior and posterior teeth, indicating that the factors that influence normal mineralization in different regions of the dental arch are not altered in the process of amelogenesis imperfecta. C1 Univ Granada, Fac Med, Dept Histol & Biol Celular, E-18071 Granada, Spain. Univ Granada, Hosp Clin, Serv Estomatol, Granada, Spain. Univ Nacl Cordoba, Fac Odontol, Catedra Histol & Embriol B, RA-5000 Cordoba, Argentina. RP Sanchez-Quevedo, MC, Univ Granada, Fac Med, Dept Histol & Biol Celular, E-18071 Granada, Spain. NR 31 TC 1 PU F HERNANDEZ PI MURCIA PA PLAZA FUENSANTA 2-7 C, 30008 MURCIA, SPAIN SN 0213-3911 J9 HISTOL HISTOPATHOL JI Histol. Histopath. PD JUL PY 2001 VL 16 IS 3 BP 827 EP 832 PG 6 SC Cell Biology; Pathology GA 460CN UT ISI:000170288400019 ER PT J AU Miraballes-Martinez, I Martin-Molina, A Galisteo-Gonzalez, F Forcada, J TI Synthesis of amino-functionalized latex particles by a multistep method SO JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY LA English DT Article DE emulsion polymerization; colloids; functionalization; stabilization ID FREE EMULSION COPOLYMERIZATION; POLYSTYRENE LATEX; LIGHT-SCATTERING; SURFACE; STYRENE; MONOMERS AB Cationic latex particles with surface amino groups were prepared by a multistep batch emulsion polymerization. In the first one or two steps, monodisperse cationic latex particles to be used as the seed were synthesized, and in the third step, two different amino-functionalized monomers [aminoethylmethacrylate hydrochloride (AEMH) and vinylbenzylamine hydrochloride (VBAH)] were used to synthesize the final functionalized latex particles. 2,2 ' -Azobisisobutyramidine dihydrochloride was used as the initiator, and different concentrations of two quaternary ammonium emulsifiers with hydrophobic chains of different lengths were examined. To characterize the final latexes yields were obtained gravimetrically, and particle size distributions and average particle diameters were determined by transmission electron microscopy and photon correlation spectroscopy. The amount of amino groups was determined by fluorimetry. The effect of the amino-functional monomer used on the final latexes and the colloidal behavior of the system were studied. The influence of the different conditions utilized to synthesize the latexes on the colloidal stability of the particles was evaluated in terms of the Fuchs stability ratio and electrophoretic mobility. High yields of the amino-functional monomers were obtained. Surface amino, amidine, and quaternary ammonium groups provided the cationic character. The colloidal stability behavior of the products obtained was compatible with their cationic character. (C) 2001 John Wiley & Sons, Inc. C1 Univ Pais Vasco, Inst Polymer Mat POLYMAT, E-20080 San Sebastian, Spain. Univ Republica, Fac Ciencias & Quim, Lab Immunotecnol, Montevideo 3051, Uruguay. Univ Pais Vasco, Fac Ciencias Quim, Dept Quim Aplicada, EHU, E-20080 San Sebastian, Spain. Univ Granada, Fac Ciencias, Dept Fis Aplicada, Grp Fis Fluidos & Biocoloides, E-18071 Granada, Spain. RP Forcada, J, Univ Pais Vasco, Inst Polymer Mat POLYMAT, Apdo 1072, E-20080 San Sebastian, Spain. NR 21 TC 12 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 USA SN 0887-624X J9 J POLYM SCI A-POLYM CHEM JI J. Polym. Sci. Pol. Chem. PD SEP 1 PY 2001 VL 39 IS 17 BP 2929 EP 2936 PG 8 SC Polymer Science GA 463JP UT ISI:000170473600008 ER PT J AU Liz, E Martinez, C Trofimchuk, S TI Global attractivity in Goodwin's oscillator with finite delay SO NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS LA English DT Article DE functional differential equations; global attractor; one-dimensional maps; Goodwin oscillator AB In the paper, several delay dependent sufficient conditions are established for the global stability of the positive steady state of a system of delay differential equations which generalizes the Goodwin oscillator system. We improve some previous results. C1 Univ Vigo, Dept Matemat Aplicada, ETSI Telecomunicac, Vigo, Spain. Univ Granada, Dept Matemat Aplicada, E-18071 Granada, Spain. Univ Chile, Fac Ciencias, Dept Matemat, Santiago, Chile. RP Liz, E, Univ Vigo, Dept Matemat Aplicada, ETSI Telecomunicac, Vigo, Spain. NR 12 TC 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0362-546X J9 NONLINEAR ANAL-THEOR METH APP JI Nonlinear Anal.-Theory Methods Appl. PD AUG PY 2001 VL 47 IS 2 PN Part 2 BP 1221 EP 1232 PG 12 SC Mathematics, Applied; Mathematics GA 466BY UT ISI:000170625500045 ER PT J AU Lupianez, J Milliken, B Solano, C Weaver, B Tipper, SP TI On the strategic modulation of the time course of facilitation and inhibition of return SO QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY SECTION A-HUMAN EXPERIMENTAL PSYCHOLOGY LA English DT Article ID DISCRIMINATION TASKS; ATTENTION; INTEGRATION; INFORMATION; LOCATIONS AB In studies of exogenous attentional orienting, response times for targets at previously cued locations are often longer than those for targets at previously uncued locations. This effect is known widely as inhibition of return (IOR). There has been debate as to whether IOR can be observed in discrimination as well as detection tasks. The experiments reported here confirm that IOR can be observed when target discrimination is required and that the cue-target interval at which IOR is observed is often longer in discrimination than in detection tasks. The results also demonstrate that the later emergence of IOR is related to perceptual discrimination rather than to response selection differences between discrimination and detection tasks. More difficult discrimination tasks lengthen the SOA at which IOR emerges. In contrast, increasing task difficulty by adding a distractor to the location opposite the target shortens the SOA at which IOR emerges. Together, the results reveal an adaptive interaction between exogenous and endogenous attentional systems, in which the action of the orienting (exogenous) system is modulated endogenously in accord with task demands. C1 Univ Granada, Fac Psicol, Dept Psicol Expt & Fisiol Comportamiento, E-18071 Granada, Spain. McMaster Univ, Hamilton, ON, Canada. Pontificia Univ Javeriana Santa Fe Bogota, Bogota, Colombia. Univ Wales, Bangor, Gwynedd, Wales. RP Lupianez, J, Univ Granada, Fac Psicol, Dept Psicol Expt & Fisiol Comportamiento, Campus Univ de Cartuja S-N, E-18071 Granada, Spain. NR 35 TC 64 PU PSYCHOLOGY PRESS PI HOVE PA 27 CHURCH RD, HOVE BN3 2FA, EAST SUSSEX, ENGLAND SN 0272-4987 J9 QUART J EXP PSYCH A-HUM EXP P JI Q. J. Exp. Psychol. Sect A-Hum. Exp. Psychol. PD AUG PY 2001 VL 54 IS 3 BP 753 EP 773 PG 21 SC Psychology; Psychology, Experimental GA 467KY UT ISI:000170702000006 ER PT J AU Lopez-Garcia, JJ Horno, J Grosse, C Delgado, AV Shilov, VN TI On the use of the hypothesis of statistically homogeneous suspensions in the calculation of their conductivity SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE electrical conductivity; statistically homogeneous suspensions; electrokinetic measurements ID PARTICLES; LAYER AB In this paper the condition of a "statistically homogeneous" suspension is carefully analyzed. This condition requires that in the presence of a macroscopic gradient of the electric potential there are no macroscopic ion concentration gradients in the system. It is shown that the use of this condition, which should always be required in the calculation of the electrical conductivity of colloidal suspensions, is far from trivial. Furthermore, its hasty use can lead to substantial errors in the calculation of the conductivity increment. (C) 2001 Academic Press. C1 Univ Jaen, Fac Ciencias Expt, Dept Fis, Jaen 23071, Spain. Univ Nacl Tucuman, Dept Fis, RA-4000 San Miguel De Tucuman, Tucuman, Argentina. Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina. Univ Granada, Fac Ciencias, Dept Fis Aplicada, Granada, Spain. Natl Acad Sci Ukraine, Inst Biocolloid Chem, Kiev, Ukraine. RP Horno, J, Univ Jaen, Fac Ciencias Expt, Dept Fis, Jaen 23071, Spain. NR 16 TC 1 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERFACE SCI JI J. Colloid Interface Sci. PD SEP 1 PY 2001 VL 241 IS 1 BP 98 EP 103 PG 6 SC Chemistry, Physical GA 467XT UT ISI:000170729600011 ER PT J AU Sanchez-Quevedo, MC Ceballos-Salobrena, G Rodriguez, IA Garcia, JM Campos, A TI Quantitative X-ray microanalytical and histochemical patterns of calcium and phosphorus in enamel in human amelogenesis imperfecta SO INTERNATIONAL JOURNAL OF DEVELOPMENTAL BIOLOGY LA English DT Article AB We used scanning electron microscopy (SEM) and quantitative X-ray microanalysis, with the peak-to-local background ratio method and microcrystal line calcium and phosphrous salts as standards, to establish quantitative pattern of biomineralization (Ca/P ratio) in enamel of incisors and molars from patients with a clinical and genetical diagnosis of amelogenesis imperfecta. (Al). No significant differences were observed between the Ca/P ratio of Al and normal enamel teeth. C1 Univ Granada, Fac Med & Odontol, Dept Histol, E-18071 Granada, Spain. Univ Granada, Hosp Clin Univ, Serv Estomatol, E-18071 Granada, Spain. Univ Nacl Cordoba, Fac Odontol, Catedra Histol & Embriol, RA-5000 Cordoba, Argentina. RP Sanchez-Quevedo, MC, Univ Granada, Fac Med & Odontol, Dept Histol, E-18071 Granada, Spain. NR 6 TC 0 PU U B C PRESS PI BILBAO PA UNIV BASQUE COUNTRY, EDITORIAL SERVICES, PO BOX 1397, E-48080 BILBAO, SPAIN SN 0214-6282 J9 INT J DEV BIOL JI Int. J. Dev. Biol. PY 2001 VL 45 SU Suppl. 1 BP S115 EP S116 PG 2 SC Developmental Biology GA 470HZ UT ISI:000170866700043 ER PT J AU Jimenez-Vicente, J Battaner, E Porcel, C Rozas, M Castaneda, H TI Vertical velocity dispersion of the ionized gas in NGC 3938 SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article ID INTERSTELLAR-MEDIUM; GALAXIES; NGC-3938; DISK AB We have studied the kinematics of the ionized gas in the nearly face-on galaxy NGC 3938 by means of observations made with the Fabry-Perot interferometer TAURUS II at the William Herschel Telescope, using the H-alpha line. We have been able to produce high-resolution velocity and velocity-dispersion maps which allow us to make a detailed study of the kinematics of the ionized gas. In particular we have found that the vertical velocity dispersion is constant with galactocentric radius, as has already been found for the atomic and molecular gas in this galaxy. This suggests the existence of several heating mechanisms in the disc acting simultaneously to produce the observed behaviour. C1 Univ Granada, Dept Fis Teor & Cosmos, Granada 18071, Spain. Inst Astrofis Canarias, E-38200 La Laguna, Spain. UNAM, Observ Ensenada, Mexico City, DF, Mexico. RP Jimenez-Vicente, J, Univ Granada, Dept Fis Teor & Cosmos, Granada 18071, Spain. NR 6 TC 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PY 2001 VL 276 IS 2-4 BP 445 EP 449 PG 5 SC Astronomy & Astrophysics GA 471TU UT ISI:000170945400013 ER PT J AU Shilov, VN Delgado, AV Gonzalez-Caballero, F Grosse, C TI Thin double layer theory of the wide-frequency range dielectric dispersion of suspensions of non-conducting spherical particles including surface conductivity of the stagnant layer SO COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS LA English DT Article DE double layer; wide-frequency; stagnant layer ID WEAK ELECTROLYTE-SOLUTIONS; COLLOIDAL SUSPENSIONS; POLYSTYRENE PARTICLES; CHARACTERISTIC TIME; PERMITTIVITY; LFDD AB The well-known results of the Dukhin-Shilov theory of the thin diffuse double layer polarization in low-frequency alternating fields is generalized in two directions: to include the surface conductivity of the stagnant layer and to describe a wide frequency range including both the low-frequency and the Maxwell-Wagner-O'Konski dispersions. The generalized expression obtained for the induced dipole moment is confirmed by comparison with numerical results of the DeLacey and White approach. Expressions describing the wide-range spectra of dielectric permittivity and conductivity of suspensions are also obtained. The results are presented in the terms of the zeta -potential and the parameter Ka, taking also into account the surface conductivity behind the plane of shear. (C) 2001 Elsevier Science B.V. All rights reserved. C1 Natl Acad Sci Ukraine, Inst biocolloid Chem, UA-252042 Kiev, Ukraine. Univ Granada, Dept Appl Phys, Granada, Spain. Univ Nacl Tucuman, Dept Phys, RA-4000 San Miguel De Tucuman, Tucuman, Argentina. RP Shilov, VN, Natl Acad Sci Ukraine, Inst biocolloid Chem, Vernadskogo Prospect 42, UA-252042 Kiev, Ukraine. NR 33 TC 24 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-7757 J9 COLLOID SURFACE A JI Colloid Surf. A-Physicochem. Eng. Asp. PD NOV 30 PY 2001 VL 192 IS 1-3 BP 253 EP 265 PG 13 SC Chemistry, Physical GA 474JM UT ISI:000171103400019 ER PT J AU Grosse, C Arroyo, FJ Shilov, VN Delgado, AV TI Numerical results for the dielectric dispersion parameters of colloidal suspensions SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE numerical; low frequency dielectric dispersion; colloidal; suspension; latex particles ID POLYSTYRENE LATEX DISPERSIONS; DOUBLE-LAYER APPROXIMATION; ELECTROLYTE-SOLUTIONS; ELECTRIC-FIELD; ELECTROPHORETIC MOBILITY; IONIC-STRENGTH; PARTICLES; RELAXATION; FRICTION AB Numerical spectra for the dielectric relaxation of colloidal suspensions of latex particles in aqueous KCI electrolyte solutions at 25 degreesC were obtained over a wide range of conditions: 10 zeta potential values evenly distributed between 20 and 200 mV, and 11 kappaa values evenly distributed in logarithmic scale between I and 100. The data were used to determine the parameter values that characterize both the low- and high-frequency microscopic (dipolar coefficient) and macroscopic (complex conductivity) dispersions. The presented results make it possible to directly compare experimental data for suspensions of particles having any size with numerical predictions, without having to compute the numerical spectra. They also permit us to precisely define the range of applicability of the theoretical expression of Shilov and Dukhin (Colloid J. 32, 245 (1970)) combined with that of O'Konski (J. Phys. Chem. 64, 605 (1960)) for the representation of the dielectric behavior of colloidal suspensions in a broad frequency range. (C) 2001 Academic Press. C1 Univ Nacl Tucuman, Dept Fis, RA-4000 San Miguel De Tucuman, Tucuman, Argentina. Univ Jaen, Fac Ciencias Expt, Dept Fis, Jaen 23071, Spain. Ukrainian Acad Sci, Inst Biocolloid Chem, Kiev, Ukraine. Univ Granada, Fac Ciencias, Dept Fis Aplicada, E-18071 Granada, Spain. RP Grosse, C, Univ Nacl Tucuman, Dept Fis, Av Independencia 1800, RA-4000 San Miguel De Tucuman, Tucuman, Argentina. NR 40 TC 7 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERFACE SCI JI J. Colloid Interface Sci. PD OCT 1 PY 2001 VL 242 IS 1 BP 75 EP 81 DI 10.1006/jcis.2001.7774 PG 7 SC Chemistry, Physical GA 479JR UT ISI:000171401700011 ER PT J AU Toledano, M Osorio, R de Leonardi, G Rosales-Leal, JI Ceballos, L Cabrerizo-Vilchez, MA TI Influence of self-etching primer on the resin adhesion to enamel and dentin SO AMERICAN JOURNAL OF DENTISTRY LA English DT Article ID SHEAR BOND STRENGTH; DROP SHAPE-ANALYSIS; COMPOSITE RESIN; IN-VIVO; ACIDIC PRIMERS; SYSTEMS; MICROLEAKAGE; RESTORATIONS; INTERFACES; DURABILITY AB Purpose: To evaluate the shear bond strength of resin-based composite to dentin and enamel using three adhesive systems, two of them containing self-etchant primers. Wettability (contact angle measurements) of the primers of these three adhesive systems was also evaluated on superficial and deep dentin. Material and Methods: Contact angle measurements were performed on 30 caries-free extracted human third molars; specimens were sectioned parallel to the occlusal surface to expose superficial and deep dentin. Dentin was ground flat (600-grit SiC) under water to provide uniform surfaces. Contact angle measurements were performed to assess wettability using the Axisymmetric Drop Shape Analysis technique. In order to test the enamel bond strength, 30 extracted bovine incisors were embedded in acrylic resin and ground flat to 800-grit. The adhesives and composite resins were applied following the manufacturers' instructions. All the specimens were stored in water for 24 hrs at 37 degreesC and thermocycled (500x). Shear bond strengths were determined using a universal testing machine and the Watanabe device. For dentin bond strength testing, superficial and deep dentin was exposed in 60 third molars, by sectioning the occlusal surface immediately under the enamel-dentin junction or close to the pulp chamber. After grinding (500 grit SiC), the dentin surfaces were assigned to three groups: (1) Clearfil SE Bond (CSEB)/Clearfil AP-X resin composite. (2) Etch & Prime (E&P)/Degufill mineral resin composite. (3) Scotchbond Multi-Purpose Plus (SBMP)/Z100 resin composite. Results: One-way ANOVA and Student-Newman-Keuls multiple comparisons tests showed that no differences were found between contact angles on superficial and deep dentin. CSEB and E&P, without significant differences between them, had greater mean contact angle than SBMP. On enamel, Etch & Prime resulted in the lowest bond strength, but no significant differences existed with Scotchbond Multi-Purpose were found. On dentin, Clearfil SE Bond resulted in the significantly highest bond strength; no significant differences exist between Etch & Prime and Scotchbond Multi-Purpose. C1 Univ Granada, Dent Mat Dept, E-18071 Granada, Spain. Univ Granada, Dept Appl Phys, E-18071 Granada, Spain. Natl Univ Cordoba, Dept Prosthodont, RA-5016 Cordoba, Argentina. RP Toledano, M, Avda Fuerzas Armadas 1,1 B, E-18014 Granada, Spain. NR 46 TC 52 PU MOSHER & LINDER, INC PI SAN ANTONIO PA 9859 IH-10 WEST, SUITE 107/489, SAN ANTONIO, TX 78230-2236 USA SN 0894-8275 J9 AM J DENTISTRY JI Am. J. Dent. PD AUG PY 2001 VL 14 IS 4 BP 205 EP 210 PG 6 SC Dentistry, Oral Surgery & Medicine GA 481YQ UT ISI:000171548400004 ER PT J AU Vera-Villarroel, PE Buela-Casal, G TI Psychoneuroimmunology: relationships between psychological and immunological factors in humans SO REVISTA LATINOAMERICANA DE PSICOLOGIA LA Spanish DT Article DE psychoneuroimmunology; stress; immunity; cancer; aids; health psychology AB Psychoneuroimmunology is the field that investigates the bidirectional relationships among behavior, the brain, and the immune system. Since the initial studies with conditioned immunodepression and activation in animals, a large number of research studies have been carried out with human participants, with the aim of finding out to which extend the immune system is subject to psychosocial influences. A review is presented of psychoneuroimmunology, exclusively of research with human participants. The definitions of the main concepts are presented, and the functioning of the immune system and the way of measuring it are indicated. Studies are reviewed in the areas of social situations, anxiety and stress, depression, cognitive processes, cancer, and aids. The large majority of research work has been done by English-speaking investigators, but there are also important work done by Iberoamerican researchers in Brazil, Chile, Mexico, Spain, and other countries. C1 Univ Santiago, Santiago, Chile. Univ Valparaiso, Valparaiso, Chile. Univ Granada, E-18071 Granada, Spain. RP Vera-Villarroel, PE, Castillo 1740,Dept 602, Santiago, Chile. NR 57 TC 3 PU FOUNDATION ADVANCEMENT PSYCHOLOGY PI BOGOTA D C PA APARTADO AEREO 92621, BOGOTA D C, COLOMBIA SN 0120-0534 J9 REV LATINOAMER PSICOL JI Rev. Latinoam. Psicol. PY 1999 VL 31 IS 2 BP 271 EP 289 PG 19 SC Psychology, Multidisciplinary GA V3091 UT ISI:000171721700004 ER PT J AU Proenza, JA Gervilla, F Melgarejo, JC Vera, O Alfonso, P Fallick, A TI Genesis of sulfide-rich chromite ores by the interaction between chromitite and pegmatitic olivine-norite dikes in the Potosi Mine (Moa-Baracoa ophiolitic massif, eastern Cuba) SO MINERALIUM DEPOSITA LA English DT Article ID PLATINUM-GROUP ELEMENTS; ZAMBALES OPHIOLITE; LIMASSOL FOREST; SILICATE MELTS; IRIDIUM; ORIGIN; ZONE; FRACTIONATION; PHILIPPINES; TEMPERATURE AB The Potosi Mine is located in the Moa-Baracoa massif in the easternmost part of the Cuban Ophiolitic Belt. Chromite mineralization occurs within the mantle-crust transition zone. Two events of magma intrusion overprint the chromitite bodies: one gave rise to the crystallization of pegmatitic olivine-norite dikes. and the other produced pegmatitic gabbro dikes. Sulfide-poor chromite ores, brecciated chromite ores, and sulfide-rich chromite ores can be distinguished in the different chromitite bodies. Sulfide-poor ores represent more than 80 vol% of the chromitites. This type occurs far from the zones intruded by pegmatitic gabbro dikes and shows petrographic and chemical features similar to other chromitite bodies described in the Moa-Baracoa massif. Brecciated chromite ores occur within pegmatitic gabbro dikes. In this type, chromite crystals occur included within chromian diopside and plagioclase. These silicates often contain droplet-like sulfide aggregates. Sulfide-rich ores are spatially associated to the contacts between sulfide-poor chromite and pegmatitic olivine-norite dikes. These ores mainly consist of recrystallized (coarse) chromite with interstitial pyrrhotite. pentlandite, cubanite. and chalcopyrite. Chromite from sulfiderich ores exhibits TiO2, FeO, V2O3, MnO, and especially, Fe2O3 contents, higher than those of chromite from brecciated ores and much higher than those of chromite from sulfide-poor ores. The sulfide-rich ores are PGE-rich (up to 1,113 ppb of total PGE), and show nearly flat chondrite-normalized PGE patterns, slightly above 0.1 times chondritic values. Mineralogical and chemical data indicate that the chromite ores of the Potosi Mine were modified by the intrusions of olivine-norite and gabbro dikes. The interaction between preexisting sulfide-poor chromite ores and the intruding volatile-rich silicate melts produced strong brecciation, partial dissolution, and recrystallization (coarsening) of chromite. The sulfide assemblage formed by fractionation of the immiscible sulfide melt segregated from the volatile-rich silicate melt that generated the pegmatitic olivine-norite. The segregation of the sulfide melt can be interpreted as the consequence of chemical interaction between intruding melts and the host chromite. The variable extent of this interaction produced chromite ores with variable sulfide ratios. The magmatic nature of the sulfide mineralization is supported by sulfur isotope data, which range from -0.4 to +0.9 parts per thousand. Sulfide melt collected incompatible PGE (Rh, Pt, Pd) to produce the typical flat chondrite-normalized pattern of sulfide-rich chromite ores. C1 Univ Barcelona, Fac Geol, Dept Cristallog Mineral Diposits Minerals, E-08028 Barcelona, Spain. Univ Granada, Fac Ciencias, CSIC, Inst Andaluz Ciencias Tierra, Granada 18002, Spain. Inst Super Minero Met Moa, Dept Geol, Moa, Cuba. SURRC, Isotope Geol Unit, Glasgow, Lanark, Scotland. RP Proenza, JA, Univ Barcelona, Fac Geol, Dept Cristallog Mineral Diposits Minerals, Marti Franques S-N, E-08028 Barcelona, Spain. NR 48 TC 5 PU SPRINGER-VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0026-4598 J9 MINER DEPOS JI Miner. Depos. PD OCT PY 2001 VL 36 IS 7 BP 658 EP 669 PG 12 SC Geochemistry & Geophysics; Mineralogy GA 486MB UT ISI:000171820600003 ER PT J AU Prado, B Jara, A del Moral, A Sanchez, E TI Numerical taxonomy of microorganisms isolated from goat cheese made in Chile SO CURRENT MICROBIOLOGY LA English DT Article ID MILK; GROWTH AB 118 strains of heterotrophic microorganisms were isolated from goat Cheese produced domestically in the IV Region of Northern Chile (Serene, Ovalle, and Illapel) and sold in supermarkets in Valparaiso, Chile. The results of 89 phenotypic tests were numerically analyzed against 17 reference strains, using the simple matching coefficient (S-SM). Thirteen phena were found at a 78% similarity level. Five of them (A, B, C, D, and E) were assigned to the family Enterobacteriaceae, phenon F was identified as belonging to the genus Aeromonas and strains of phenon G were assigned to the genus Acinetobacter. The other phena were identified as being members of the genera Bacillus (H, I, and J), Staphylococcus (K), Enterococcus (L), and Micrococcus (M). Approximately 19% of the isolates were Escherichia coli and 27%, Staphylococcus aureus. C1 Univ Granada, Fac Pharm, Dept Microbiol, E-18071 Granada, Spain. Univ Tecn Federico Santa Maria, Microbiol Lab, Vina del Mar, Chile. RP del Moral, A, Univ Granada, Fac Pharm, Dept Microbiol, E-18071 Granada, Spain. NR 25 TC 2 PU SPRINGER-VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0343-8651 J9 CURR MICROBIOL JI Curr. Microbiol. PD DEC PY 2001 VL 43 IS 6 BP 396 EP 399 PG 4 SC Microbiology GA 490WT UT ISI:000172077200003 ER PT J AU Carranza, M Ferraris, M Simbron, A Quevedo, MS TI Mineralization of the mandibular condyle and maturation of the associated muscles in human features SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Natl Univ Cordoba, Fac Dent, Dept Histol, RA-5016 Cordoba, Argentina. Natl Univ Cordoba, Fac Dent, Dept Anat B, RA-5016 Cordoba, Argentina. Univ Granada, Fac Med & Dent, Dept Cell Biol & Histol, E-18071 Granada, Spain. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD APR PY 2001 VL 80 IS 4 BP 940 EP 940 PG 1 SC Dentistry, Oral Surgery & Medicine GA 497VL UT ISI:000172476100004 ER PT J AU Arancegui, N Lucena, PH Garcia, FG Martinez, M Urena, JL TI A comparative study of Streptococcus mutans strains by a molecular technique (PCR). SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Fac Dent, Rosario, Argentina. Fac Dent, Granada, Spain. Univ Granada, Fac Med, E-18071 Granada, Spain. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD APR PY 2001 VL 80 IS 4 BP 948 EP 948 PG 1 SC Dentistry, Oral Surgery & Medicine GA 497VL UT ISI:000172476100069 ER PT J AU Sanchez-Quevedo, MC Ceballos, G Rodriguez, IA Garcia, JM Ferraris, MEG Campos, A TI Quantitative X-ray microanalytical histochemistry of enamel in hypomineralized amelogenesis imperfecta SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Granada, Fac Med & Dent, E-18071 Granada, Spain. UN Cordoba, Fac Dent, Cordoba, Argentina. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD APR PY 2001 VL 80 IS 4 BP 1249 EP 1249 PG 1 SC Dentistry, Oral Surgery & Medicine GA 497VL UT ISI:000172476102141 ER PT J AU Garcia-Casco, A Torres-Roldan, RL Millan, G Monie, P Haissen, F TI High-grade metamorphism and hydrous melting of metapelites in the Pinos terrane (W Cuba): Evidence for crustal thickening and extension in the northern Caribbean collisional belt SO JOURNAL OF METAMORPHIC GEOLOGY LA English DT Article DE Caribbean; crustal thickening; pelite melting; Pinos Island; tectonic extension ID CORDIERITE-BEARING; THERMAL EVOLUTION; GRANITIC LIQUIDS; PHASE-RELATIONS; SOUTHERN SPAIN; PELITIC ROCKS; WESTERN CUBA; SYSTEM; GARNET; MUSCOVITE AB The Pinos terrane (Isle of Pines, W Cuba) is a coherent metamorphic complex that probably represents a portion of the continental margin of the Yucatan Block during the Mesozoic. Within the framework of other metamorphic terranes in the Greater Antilles, the Pinos terrane is characterized by the occurrence of high-grade kyanite-, sillimanite- and andalusite-bearing metapelites and migmatites. Assessment and modelling of phase relations in these high grade rocks indicate that they reached a peak temperature of c. 750 degreesC at 11-12 kbar, and then underwent strong decompression to c. 3 kbar at c. 600 degreesC. Decompression was contemporaneous with the main synmetamorphic deformation in the area (D2), and was accompanied by segregation of trondhjemitic partial melts formed by wet melting of metapelites. Metamorphism terminated in the Uppermost Cretaceous (68 +/- 2 Ma: Ar-40/Ar-39 dates on biotite and muscovite). The P-T-t-deformation relations of the high-grade rocks suggest that crustal thickening (during collision of this portion of the Yucatan margin with the Great Volcanic Arc of the Caribbean?) was followed by decompression interpreted to reflect exhumation by extension, possibly related to the initial development of the Yucatan Basin in the uppermost Cretaceous. C1 Univ Granada, Dept Mineral & Petrol, Granada 18002, Spain. Inst Geol & Palaeontol, Havana, Cuba. USTL, Lab Tecton & Geochronol, CNRS, URA 1371, F-34095 Montpellier, France. Univ Chouaib Doukkali, Fac Sci, Dept Geol, El Jadida, Morocco. RP Garcia-Casco, A, Univ Granada, Dept Mineral & Petrol, Fuentenueva S-N, Granada 18002, Spain. EM agcasco@ugr.es NR 80 TC 10 PU BLACKWELL SCIENCE INC PI MALDEN PA 350 MAIN ST, MALDEN, MA 02148 USA SN 0263-4929 J9 J METAMORPH GEOL JI J. Metamorph. Geol. PD NOV PY 2001 VL 19 IS 6 BP 699 EP 715 PG 17 SC Geology GA 498XA UT ISI:000172537800005 ER PT J AU Lizama, C Monteoliva-Sanchez, M Prado, B Ramos-Cormenzana, A Weckesser, J Campos, V TI Taxonomic study of extreme halophilic archaea isolated from the "Salar de Atacama", Chile SO SYSTEMATIC AND APPLIED MICROBIOLOGY LA English DT Article DE Atacama Saltern; Tebenquiche Lake; extreme halophilic archaea; numerical taxonomy ID POLAR LIPID-COMPOSITION; GRAM-NEGATIVE RODS; GEN. NOV.; NUMERICAL TAXONOMY; HALOBACTERIUM-SACCHAROVORUM; ALKALIPHILIC HALOBACTERIA; CARBON-SOURCES; SPEC-NOV; COMB-NOV; HALOARCULA AB A large number of halophilic bacteria were isolated in 1984-1992 from the Atacama Saltern (North of Chile). For this study 82 strains of extreme halophilic archaea were selected. The characterization was performed by using the phenotypic characters including morphological, physiological, biochemical, nutritional and antimicrobial susceptibility test. The results, together with those from reference strains, were subjected to numerical analysis, using the Simple Matching (S-SM) coefficient and clustered by the unweighted pair group method of association (UPGMA). Fifteen phena were obtained at an 70;, similarity level. The results obtained reveal a high diversity among the halophilic archaea isolated. Representative strains from the phena were chosen to determine their DNA base composition and the percentage of DNA-DNA similarity compared to reference strains. The 165 rRNA studies showed that some of these strains constitutes a new taxa of extreme halophilic archaea. C1 Univ Granada, Fac Pharm, Dept Microbiol, E-18071 Granada, Spain. Pontificia Univ Catolica Valparaiso, Fac Basic & Math Sci, Inst Biol, Microbiol Lab, Valparaiso, Chile. Inst Biol & Microbiol, Freiburg, Germany. RP Monteoliva-Sanchez, M, Univ Granada, Fac Pharm, Dept Microbiol, Campus Univ Cartuja S-N, E-18071 Granada, Spain. EM mmonteol@platon.ugr.es NR 52 TC 5 PU URBAN & FISCHER VERLAG PI JENA PA BRANCH OFFICE JENA, P O BOX 100537, D-07705 JENA, GERMANY SN 0723-2020 J9 SYST APPL MICROBIOL JI Syst. Appl. Microbiol. PD NOV PY 2001 VL 24 IS 3 BP 464 EP 474 PG 11 SC Biotechnology & Applied Microbiology; Microbiology GA 513UC UT ISI:000173396900020 ER PT J AU Gaztanaga, E Garcia-Berro, E Isern, J Bravo, E Dominguez, I TI Bounds on the possible evolution of the gravitational constant from cosmological type-Ia supernovae SO PHYSICAL REVIEW D LA English DT Article ID HIGH-REDSHIFT SUPERNOVAE; LIGHT CURVES; ACCELERATING UNIVERSE; WHITE-DWARFS; RISE TIMES; VARYING-G; GRAVITY; MODELS; FIELD; CONSTRAINTS AB Recent high-redshift type-Ia supernovae results can be used to set new bounds on a possible variation of the gravitational constant G. If the local value of G at the space-time location of distant supernovae is different, it would change both the kinetic energy release and the amount of Ni-56 synthesized in the supernova outburst. Both effects are related to a change in the Chandrasekhar mass M(Ch)proportional toG(-3/2). In addition, the integrated variation of G with time would also affect the cosmic evolution and therefore the luminosity distance relation. We show that the later effect in the magnitudes of type-Ia supernovae is typically several times smaller than the change produced by the corresponding variation of the Chandrasekhar mass. We investigate in a consistent way how a varying G could modify the Hubble diagram of type-Ia supernovae and how these results can be used to set upper bounds to a hypothetical variation of G. We find G/G(0)less than or similar to1.1 and G/Gless than or similar to10(-11) yr(-1) at redshifts zsimilar or equal to0.5. These new bounds extend the currently available constraints on the evolution of G all the way from solar and stellar distances to typical scales of Gpc/Gyr, i.e., by more than 15 orders of magnitude in time and distance. C1 INAOE, Puebla 7200, Mexico. Inst Estudis Espacials Catalunya, Barcelona 08034, Spain. Univ Politecn Catalunya, Dept Fis Aplicada, ES-08034 Barcelona, Spain. CSIC, Inst Ciencies Espai, Barcelona, Spain. Univ Politecn Catalunya, Dept Fis & Engn Nucl, E-08028 Barcelona, Spain. Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain. RP Gaztanaga, E, INAOE, Apdo Postal 216 & 51, Puebla 7200, Mexico. NR 74 TC 12 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD JAN 15 PY 2002 VL 65 IS 2 AR 023506 DI 10.1103/PhysRevD.65.023506 PG 9 SC Astronomy & Astrophysics; Physics, Particles & Fields GA 513WC UT ISI:000173402500021 ER PT J AU Lizama, C Monteoliva-Sanchez, M Suarez-Garcia, A Rosello-Mora, R Aguilera, M Campos, V Ramos-Cormenzana, A TI Halorubrum tebenquichense sp nov., a novel halophilic archaeon isolated from the Atacama Saltern, Chile SO INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY LA English DT Article DE extremely halophilic archaea; halorubrum tebenquichense; Lake Tebenquiche; Atacama Saltern ID POLAR LIPID-COMPOSITION; GEN-NOV; HALOBACTERIUM-SODOMENSE; ALKALIPHILIC HALOBACTERIA; NUMERICAL TAXONOMY; COMB-NOV; DEAD-SEA; BACTERIUM; ARCHAEBACTERIA; SACCHAROVORUM AB A novel extremely halophilic archaeon was isolated from Lake Tebenquiche, situated in the northern part of the Atacama Saltern, Chile. The cells of these micro-organisms were mostly irregularly disc-shaped. They grew in medium containing saturated concentrations of NaCl and did not require magnesium for optimal growth. The polar lipid composition revealed the presence of mannosyl-2-sulfate-(1-4)-glycosyl-archaeol, the main glycolipid of the genus Halorubrum, and two new glycolipids. The G+C content of the DNA was 63.2 mol%. Phylogenetic analysis of the 16S rRNA gene placed strain ALT6-92(T) within the Halorubrum cluster. The low DNA-DNA hybridization value justified classification in a new species for which the name Halorubrum tebenquichense sp. nov. is proposed. The type strain is ALT6-92(T) (= CECT 5317(T) = DSM 14210(T)). C1 Univ Granada, Fac Pharm, Dept Microbiol, E-18071 Granada, Spain. Univ Atacama, Fac Nat Sci, Dept Biol & Chem, Copiapo, Chile. Univ Granada, Fac Pharm, Dept Biochem, E-18071 Granada, Spain. Max Planck Inst Marine Mikrobiol, D-28359 Bremen, Germany. Pontificia Univ Catolica Valparaiso, Fac Basic & math Sci, Inst Biol, Microbiol Lab, Valparaiso, Chile. RP Monteoliva-Sanchez, M, Univ Granada, Fac Pharm, Dept Microbiol, C Cartuja S-N, E-18071 Granada, Spain. EM mmonteol@platon.ugr.es NR 38 TC 13 PU SOC GENERAL MICROBIOLOGY PI READING PA MARLBOROUGH HOUSE, BASINGSTOKE RD, SPENCERS WOODS, READING RG7 1AG, BERKS, ENGLAND SN 1466-5026 J9 INT J SYST EVOL MICROBIOL JI Int. J. Syst. Evol. Microbiol. PD JAN PY 2002 VL 52 PN Part 1 BP 149 EP 155 PG 7 SC Microbiology GA 514WN UT ISI:000173464200012 ER PT J AU Sanchez-Polo, M Rivera-Utrilla, J Zaror, CA TI Advanced oxidation with ozone of 1,3,6-naphthalenetrisulfonic acid in aqueous solution SO JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY LA English DT Article DE kinetics; 1,3,6-naphthalenetrisulfonic acid; ozone; oxidation; hydroxyl radical ID POLYNUCLEAR AROMATIC-HYDROCARBONS; WATER; OZONATION; KINETICS AB The kinetics of oxidation with ozone of 1,3,6-naphthalenetrisulfonic acid was analysed by studying the influence of different experimental parameters such as the concentration of tert-butyl alcohol (2-methyl-2-propanol), initial concentration of the acid, pH, and temperature. The rate constant of the direct reaction at 25degreesC was calculated (k(D) = 6.72 m(-1)s(-1)). The constant of the free radical reaction was determined with the competitive kinetics method, using sodium 4-chlorobenzoate as reference compound, obtaining a value of k(OH) = 3.7 x 10(9)m(-1)s(-1). It was demonstrated that even at very acid pH values, 80% of the 1,3,6-naphthalenetrisulfonic acid was degraded by free radical reactions, so that the ozonation of this acid may be considered an advanced oxidation process. (C) 2002 Society of Chemical Industry. C1 Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. Concepcion Univ, Ctr Eula, Concepcion, Chile. RP Rivera-Utrilla, J, Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. NR 22 TC 10 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND SN 0268-2575 J9 J CHEM TECHNOL BIOTECHNOL JI J. Chem. Technol. Biotechnol. PD FEB PY 2002 VL 77 IS 2 BP 148 EP 154 DI 10.1002/jctb.539 PG 7 SC Biotechnology & Applied Microbiology; Chemistry, Multidisciplinary; Engineering, Chemical GA 517GU UT ISI:000173603400004 ER PT J AU Cordon, O Herrera, F Zwir, I TI Linguistic modeling by hierarchical systems of linguistic rules SO IEEE TRANSACTIONS ON FUZZY SYSTEMS LA English DT Article DE genetic algorithms; hierarchical knowledge base; hierarchical linguistic partitions; linguistic modeling; Mamdani-type fuzzy rule-based systems; rule selection ID GENETIC ALGORITHMS; CLASSIFICATION PROBLEMS; FUZZY PARTITION; CONTROLLERS; EXAMPLES AB In this paper, we are going to propose an approach to design linguistic models which are accurate to a high degree and may be suitably interpreted. This approach will be based on the development of a Hierarchical System of Linguistic Rules learning methodology. This methodology has been thought as a refinement of simple linguistic models which, preserving their descriptive power, introduces small changes to increase their accuracy. To do so, we extend the structure of the Knowledge Base of Fuzzy Rule Base Systems in a hierarchical way, in order to make it more flexible. This flexibilization will allow us to have linguistic rules defined over linguistic partitions with different granularity levels, and thus to improve the modeling of those problem subspaces where the former models have bad performance. C1 Univ Granada, Dept Comp Sci & Artificial Intelligence, ETS Ingn Informat, E-18071 Granada, Spain. Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Comp Sci, RA-1428 Buenos Aires, DF, Argentina. RP Cordon, O, Univ Granada, Dept Comp Sci & Artificial Intelligence, ETS Ingn Informat, E-18071 Granada, Spain. NR 31 TC 22 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA SN 1063-6706 J9 IEEE TRANS FUZZY SYST JI IEEE Trans. Fuzzy Syst. PD FEB PY 2002 VL 10 IS 1 BP 2 EP 20 PG 19 SC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic GA 520CC UT ISI:000173761700002 ER PT J AU Gonzalez, AE Martinez-Lopez, F Moncho-Jorda, A Hidalgo-Alvarez, R TI Two-dimensional colloidal aggregation: Concentration effects SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE colloidal aggregation; fractal dimension; kinetic exponents ID 2 DIMENSIONS; INVARIANCE; PARTICLES; ORDER AB Extensive numerical simulations of diffusion-limited (DLCA) and reaction-limited (RLCA) colloidal aggregation in two dimensions were performed to elucidate the concentration dependence of the cluster fractal dimension and of the different average cluster sizes. Both on-lattice and off-lattice simulations were used to check the independence of our results on the simulational algorithms and on the space structure. The range in concentration studied spanned 2.5 orders of magnitude. In the DLCA case and in the flocculation regime, it was found that the fractal dimension shows a linear-type increase with the concentration phi, following the law: d(f) = d(f0) + aphi(c). For the on-lattice simulations the fractal dimension in the zero concentration limit, d(f0), was 1.451 +/- 0.002, while for the off-lattice simulations the same quantity took the value 1.445 +/- 0.003. The prefactor a and exponent c were for the on-lattice simulations equal to 0.633 +/- 0.021 and 1.046 +/- 0.032, while for the off-lattice simulations they were 1.005 +/- 0.059 and 0.999 +/- 0.045, respectively. For the exponents z and z', defining the increase of the weight-average (S-w(t)) and number-average (S-n(t)) cluster sizes as a function of time, we obtained in the DLCA case the laws: z = z(o) + bphi(d) and z' = z'(o) + b'phi(d'). For the on-lattice simulations, z(o), b, and d were equal to 0.593 +/- 0.008, 0.696 +/- 0.068, and 0.485 +/- 0.048, respectively, while for the off-lattice simulations they were 0.595 +/- 0.005, 0.807 +/- 0.093, and 0.599 +/- 0.051. In the case of the exponent z', the quantities z'(o), b', and d' were, for the on-lattice simulations, equal to 0.615 +/- 0.004, 0.814 +/- 0.081, and 0.620 +/- 0.043, respectively, while for the off-lattice algorithm they took the values 0.598 +/- 0.002, 0.855 +/- 0.035, and 0.610 +/- 0.018. In RLCA we have found again that the fractal dimension, in the flocculation regime, shows a similar linear-type increase with the concentration d(f) = d(f0) + aphi(c), with d(f0) = 1.560 +/- 0.004, a = 0.342 +/- 0.039, and c = 1.000 +/- 0.112. In this RLCA case it was not possible to find a straight line in the log-log plots of S-w(t) and S-n(t) in the aggregation regime considered, and no exponents z and z' were defined. We argue however that for sufficiently long periods of time the cluster averages should tend to those for DLCA and, therefore, their exponents should coincide with z and z' of the DLCA case. Finally, we present the bell-shaped master curves for the scaling of the cluster size distribution function and their evolution when the concentration increases, for both the DLCA and RLCA cases. (C) 2002 Elsevier Science (USA). C1 Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Cuernavaca 62251, Morelos, Mexico. Univ Granada, Dept Fis Aplicada, Grp Fis Fluidos & Biocoloides, E-18071 Granada, Spain. RP Gonzalez, AE, Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Apdo Postal 48-3, Cuernavaca 62251, Morelos, Mexico. NR 17 TC 11 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERFACE SCI JI J. Colloid Interface Sci. PD FEB 15 PY 2002 VL 246 IS 2 BP 227 EP 234 DI 10.1006/jcis.2001.7973 PG 8 SC Chemistry, Physical GA 520LP UT ISI:000173783600002 ER PT J AU Tesarik, J Nagy, P Abdelmassih, R Greco, E Mendoza, C TI Pharmacological concentrations of follicle-stimulating hormone and testosterone improve the efficacy of in vitro germ cell differentiation in men with maturation arrest SO FERTILITY AND STERILITY LA English DT Article DE in vitro spermatogenesis; FSH; testosterone; maturation arrest; nonobstructive azoospermia ID MATURING HUMAN OOCYTES; IN-VITRO; SEMINIFEROUS TUBULES; NONGENOMIC ACTIONS; ANDROGEN RECEPTOR; STEROID-HORMONES; SPERMATOGENESIS; GENE; ESTRADIOL; APOPTOSIS AB Objective: To examine whether in vitro differentiation of germ cells from men with maturation arrest is improved by augmenting FSH and T concentrations above the values effective in samples from men with normal spermatogenesis. Design: Prospective, controlled in vitro study. Setting: Private assisted reproduction centers and a university department. Patient(s): Men with meiotic or postmeiotic maturation arrest. Intervention(s): Testicular spermatid extraction, in vitro culture of testicular biopsy samples, intraoocyte injection of elongated spermatids, embryo culture and transfer. Main Outcome Measure(s): Progression of in vitro germ cell differentiation, fertilization, and pregnancy outcomes with in vitro cultured germ cells. Result(s): In some cases of meiotic and postmeiotic maturation arrest, more advanced germ cell stages were achieved by in vitro culture in the presence of 500 IU/L FSH as compared with 50 IU/L FSH. The beneficial effect of 500 IU/L FSH was further potentiated by a simultaneous increase of T concentration from I to 10 AM. Fertilizations with germ cells recovered after incubation with these Pharmacological hormone concentrations gave rise to viable embryos and the births of five healthy babies. Conclusion(s): Pharmacological concentrations of FSH and T are beneficial for in vitro maturation of germ cells from some men with in vivo maturation arrest. (Fertil Steril(R) 2002;77:245-51. (C) 2002 by American Society for Reproductive Medicine.). C1 Lab Eylau, Paris, France. Clin & Res Ctr Assisted Reprod Roger Abdelmassih, Sao Paulo, Brazil. European Hosp, Rome, Italy. Univ Granada, Granada, Spain. RP Tesarik, J, Gracia 36, Granada 18002, Spain. NR 29 TC 5 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0015-0282 J9 FERT STERIL JI Fertil. Steril. PD FEB PY 2002 VL 77 IS 2 BP 245 EP 251 PG 7 SC Obstetrics & Gynecology; Reproductive Biology GA 521FX UT ISI:000173829500008 ER PT J AU Soto, JM Sanchez, E Uvalle, JX Yanez, RM Montes, F Ruiz, JM Romero, L TI Pre-harvest application dosages of aminoethoxyvinylglycine in relation to ripening, fruit drop and watercore in 'Red Delicious' and 'Golden Delicious' apples SO PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY LA English DT Article DE pre-harvest; aminoethoxyvinylglycine; ripening; fruit drop; watercore; apples ID STORAGE BEHAVIOR; MCINTOSH APPLES; 1-AMINOCYCLOPROPANE-1-CARBOXYLIC ACID; ETHYLENE; DAMINOZIDE; PACLOBUTRAZOL; MATURITY AB This study evaluates the effect of aminoethoxyvinylglycine on ripening, fruit drop and water core in 'Red Delicious' (RD) and 'Golden Delicious' (GD) apples. Four weeks before harvest, the following treatments were applied to the respective sections of the trees: TO (no application; control), T1 (74.1 g a.i. of AVG-3168), T2 (98.8 g ad. of AVG-3168) and T3 (123.5 g a.i. of AVG-3168/ ha in 1000 L of water). Commercial-quality fruit were harvested on 5 and 10 September for 'RD' and 'GD', respectively (to coincide with local harvest dates), and a sampling was made 21 days after commercial harvest (dach). The results were: 1) AVG treatments, especially the high dosage (T3) benefited the ripening indices (fruit firmness, soluble solids, content starch index and sugar/acid relationship) in both varieties in comparison with T0; ii) the AVG treatments, particularly T3 and T2 in 'RD' and 'GD', respectively, strongly reduced fruit drop and water core in comparison with control; and, iii) ripening pattern was discernibly different in the two varieties; thus the medium AVG dosage (T2) is recommended for 'GD' and the high dosage (T3) for 'RD', based on the positive yield results at 21 dach. C1 Univ Autonoma Chihuahua, Fac Ciencias Agrotecnol, Chihuahua 31150, Mexico. Univ Granada, Fac Ciencias, Dept Biol Vegetal, E-18071 Granada, Spain. RP Soto, JM, Univ Autonoma Chihuahua, Fac Ciencias Agrotecnol, AP 24, Chihuahua 31150, Mexico. NR 36 TC 0 PU FUNDACION ROMULO RAGGIO PI VICENTE LOPEZ (BA) PA GASPAR CAMPOS 861, 1638 VICENTE LOPEZ (BA), ARGENTINA SN 0031-9457 J9 PHYTON-INT J EXP BOT ARG JI Phyton-Int. J. Exp. Bot. PY 2001 SI Sp. Iss. SI BP 171 EP 178 PG 8 SC Plant Sciences GA 528NM UT ISI:000174249900020 ER PT J AU Valdes, H Sanchez-Polo, M Rivera-Utrilla, J Zaror, CA TI Effect of ozone treatment on surface properties of activated carbon SO LANGMUIR LA English DT Article ID NITRIC-ACID; ADSORPTION; CHEMISTRY; SITES; OXIDATION; OXYGEN AB The combined use of ozone and activated carbon has recently started to be developed for the treatment of toxic effluents. However, the effect of ozone on the properties of activated carbon is not fully elucidated. A study was undertaken of modifications in the surface properties of a commercial activated carbon produced by its ozonation during different time periods. Surface chemistry of the activated carbon samples was characterized by selective neutralization, temperature-programmed desorption, X-ray photoelectron spectroscopy, and pH of the point of zero charge. Surface area and volume of micropores and mesopores were obtained from nitrogen adsorption isotherms at 77 K. Adsorption properties were determined by methylene blue adsorption index. Results show that the higher the ozone dose, the higher is the oxidation of the carbon and the greater is the number of acid groups present on the carbon surface, especially carboxylic groups, whereas the pH of the point of zero charge decreases. The surface area, micropore volume, and methylene blue adsorption all reduce with higher doses. These results are explained by the ozone attack on the carbon and the fixation of oxygen groups on its surface. C1 Concepcion Univ, Dept Ingn Quim F Ingn, Concepcion, Chile. Univ Granada, Dept Quim Inorgan F Ciencias, E-18071 Granada, Spain. RP Valdes, H, Concepcion Univ, Dept Ingn Quim F Ingn, Correo 3,Casilla 160-C, Concepcion, Chile. NR 32 TC 49 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD MAR 19 PY 2002 VL 18 IS 6 BP 2111 EP 2116 DI 10.1021/la010920a PG 6 SC Chemistry, Physical GA 531EL UT ISI:000174403000024 ER PT J AU Rivera-Utrilla, J Sanchez-Polo, M Zaror, CA TI Degradation of naphthalenesulfonic acids by oxidation with ozone in aqueous phase SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID DISSOCIATING ORGANIC-COMPOUNDS; INORGANIC-COMPOUNDS; SULFONIC-ACIDS; RATE CONSTANTS; WATER; OZONATION; CHROMATOGRAPHY AB Sulfonic aromatic compounds are widely used in the textile industry for the synthesis of azo dyes. The presence of the sulfonic group endows these compounds with high water-solubility and resistance to biological treatment. The present work analysed the efficacy of oxidation with ozone in the treatment of waters containing naphthalene-1-sulfonic acid, naphthalene-1,5-disulfonic acid and naphthalene-1,3,6-trisulfonic acid. The reactivity to ozone significantly decreased with an increase in the number of sulfonic groups in the aromatic ring, and naphthalene-1,3,6-trisulfonic acid showed the lowest reaction rate. The stoichiometry of the direct ozonization reaction was around one mole of sulfonic acid per mole of ozone in all cases. The activation energy value of the direct ozonization reaction was very similar in all studied cases (37-42 kJ mol 1). The contribution of the direct reaction to the global oxidation at pH 2 was observed to decrease with more sulfonic groups in the aromatic ring, from a contribution of 69% for naphthalene-1-sulfonic acid to around 20% for naphthalene-1,3,6-trisulfonic acid. The radical reaction rate constant was found to be of the order of 10(9) x M-1 s(-1) in all cases, although it showed a slight reduction as the number of sulfonic groups in the aromatic ring increased. A follow-up study of the oxidation products of each sulfonic aromatic acid revealed the presence of highly oxidized organic acids and sulfate ions. A theoretical study of the electronic density at the bond critical point showed that double bonds with highest electron density in the three acids are in positions 1-2, 3-4, 5-6 and 7-8. These bonds are initially attacked by ozone via 1,3-dipolar cycloaddition. C1 Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. Concepcion Univ, Dept Ingn Quim, Concepcion, Chile. RP Rivera-Utrilla, J, Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. NR 28 TC 12 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD,, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2002 VL 4 IS 7 BP 1129 EP 1134 DI 10.1039/b108194b PG 6 SC Chemistry, Physical; Physics, Atomic, Molecular & Chemical GA 531TB UT ISI:000174432300006 ER PT J AU Odriozola, G Schmitt, A Moncho-Jorda, A Callejas-Fernandez, J Martinez-Garcia, R Leone, R Hidalgo-Alvarez, R TI Constant bond breakup probability model for reversible aggregation processes SO PHYSICAL REVIEW E LA English DT Article ID LIMITED COLLOID AGGREGATION; FRAGMENTATION PROCESSES; COMPUTER-SIMULATIONS; STOCHASTIC SIMULATION; CLUSTER AGGREGATION; UNIVERSALITY; COAGULATION; FLUCTUATIONS; DIFFUSION; PARTICLES AB Reversible aggregation processes were simulated for systems of freely diffusing sticky particles. Reversibility was introduced by allowing that all bonds in the system may break with a given probability per time interval. In order to describe the kinetics of such aggregation-fragmentation processes, a fragmentation kernel was developed and then used together with the Brownian aggregation kernel for solving the corresponding kinetic master equation. The deduced fragmentation kernel considers a single characteristic lifetime for all bonds and accounts for the cluster morphology by averaging over all possible configurations for clusters of a given size. It became evident that the simulated cluster-size distributions could be described only when an additional fragmentation effectiveness was considered. Doing so, the stochastic solutions were in good agreement with the simulated data. C1 Univ Granada, Dept Fis Aplicada, E-18071 Granada, Spain. Univ Republica, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. RP Hidalgo-Alvarez, R, Univ Granada, Dept Fis Aplicada, Campus Fuentenueva, E-18071 Granada, Spain. NR 33 TC 13 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2002 VL 65 IS 3 PN Part 1 AR 031405 DI 10.1103/PhysRevE.65.031405 PG 8 SC Physics, Fluids & Plasmas; Physics, Mathematical GA 533UM UT ISI:000174548800043 ER PT J AU Hasan, SMT Maachee, M Cordova, OM de la Guardia, RD Martins, M Osuna, A TI Human secretory immune response to fatty acid-binding protein fraction from Giardia lamblia SO INFECTION AND IMMUNITY LA English DT Article ID ANTIBODIES; MILK; INFECTIONS; ANTIGENS; CHILDREN; WOMEN; IGA AB The secretory immune response in humans infected with Giardia lamblia was studied by using saliva samples and an 8-kDa antigen capable of binding fatty acids. This antigen was not recognized by saliva samples from healthy individuals. The antigen may be useful in diagnostic studies of G. lamblia infection. C1 Univ Granada, Inst Biotecnol, E-18071 Granada, Spain. Fundacao Med Trop, IMT AM, Gerencia Parastol, BR-69040000 Manaus, Amazonas, Brazil. RP Osuna, A, Univ Granada, Inst Biotecnol, Campus Fuentenueva, E-18071 Granada, Spain. NR 31 TC 2 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 0019-9567 J9 INFEC IMMUNITY JI Infect. Immun. PD APR PY 2002 VL 70 IS 4 BP 2226 EP 2229 DI 10.1128/IAI.70.4.2226-2229.2002 PG 4 SC Immunology; Infectious Diseases GA 534FE UT ISI:000174573200065 ER PT J AU Alonso, A Salas, A Albarran, C Arroyo, E Castro, A Crespillo, M di Lonardo, AM Lareu, MV Cubria, CL Soto, ML Lorente, JA Semper, MM Palacio, A Paredes, M Pereira, L Lezaun, AP Brito, JP Sala, A Vide, MC Whittle, M Yunis, JJ Gomez, J TI Results of the 1999-2000 collaborative exercise and proficiency testing program on mitochondrial DNA of the GEP-ISFG: an inter-laboratory study of the observed variability in the heteroplasmy level of hair from the same donor SO FORENSIC SCIENCE INTERNATIONAL LA English DT Article DE mitochondrial DNA (mtDNA) polymorphism; standardization; collaborative exercise; forensic science heteroplasmy; hair shafts ID MTDNA CONTROL REGION; INTERNATIONAL SOCIETY; FORENSIC GENETICS; WORKING GROUP; POPULATIONS; SEQUENCE; MUTATION; SPANISH; SHAFTS AB The Spanish and Portuguese working group (GEP) of international society for forensic genetics (ISFG) 1999-2000 collaborative exercise on mitochondrial DNA (mtDNA) included the analysis of four bloodstain samples and one hair shaft sample by 19 participating laboratories from Spain, Portugal and several Latin-American countries. A wide range of sequence results at position 16,093 of the HV 1 (from T or C homoplasmy to different levels of heteroplasmy) were submitted by the different participating laboratories from the hair shaft sample during the first phase of this exercise. During the discussion of these results in the Annual GEP-ISFG 2000 Conference a second phase of this exercise was established with two main objectives: (i) to evaluate the incidence of the HV I sequence heteroplasmy detected in Phase I across different sample types from the same donor including blood, saliva, and hair shafts, (ii) to perform a technical review or the electropherograms to evaluate the relative levels of heteroplasmies obtained by the different laboratories and also to examine the source of possible errors detected in Phase 1. Anonymous review of the raw sequence data permitted the detection of three transcription errors and three errors due to methodological problems. Highly variable levels of heteroplasmy were found in the hair shaft and more stability in blood and saliva. Three laboratories found variable levels of heteroplasmy at position 16,093 across adjacent fragments from the same hair shaft. Two laboratories also described more than one heteroplasmic position from a single hair. The relevance of these findings for the interpretation of mtDNA data in the forensic context is also discussed. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved. C1 Inst Toxicol, Dept Madrid, Secc Biol, Madrid 28002, Spain. Fac Med, Inst Med Legal, Santiago De Compostela, Spain. Univ Complutense, Fac Med, Dept Med Legal & Forense, E-28040 Madrid, Spain. DataGene Sondika, Bizkaia, Spain. Inst Toxicol, Dept Barcelona, Secc Biol, Madrid, Spain. Hosp Dr CG Durand, Banco Nacl Datos Genet, Buenos Aires, DF, Argentina. Direcc Gen Guardia Civil, Lab ADN, Jefatura Invest & Criminalist, Madrid, Spain. Inst Toxicol, Secc Biol, Dept Sevilla, Madrid 28002, Spain. Univ Granada, Dept Legal Med, Lab Identificat Genet, Madrid, Spain. ADN, Secc Biol, Serv Cent Analit, Comisaria Gen Policia Cient, Madrid, Spain. Ctr Anal Genet, CAGT, Zaragoza, Spain. Inst Nacl Med Legal & Ciencias Forenses, Lab DNA, Santafe De Bogota, Colombia. Univ Porto, Inst Patol & Imunol Mol, Oporto, Portugal. Univ Pompeu Fabra, Fac Ciences Salut Vida, Servei Sequenciacio & Anal Fragments, Barcelona, Spain. Univ Palmas Gran Canarias, Fac Med, Inst Anat Forense, Lab Genet, Gran Canarias, Spain. Univ Buenos Aires, Fac Farm & Bioquim, Serv Huellas Digitales Genet, RA-1113 Buenos Aires, DF, Argentina. Inst Med Legal, Serv Biol Forense, Coimbra, Portugal. Genom Engn Mol Ltda, Sao Paulo, Brazil. Serv Med Yunis Turbay & Cia, Santa Fe De Bogota, Colombia. Inst Toxicol, Unidad Garantia de Calidad, Madrid, Spain. RP Alonso, A, Inst Toxicol, Dept Madrid, Secc Biol, Luis Cabrera 9, Madrid 28002, Spain. NR 23 TC 17 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0379-0738 J9 FORENSIC SCI INT JI Forensic Sci.Int. PD JAN 24 PY 2002 VL 125 IS 1 BP 1 EP 7 PG 7 SC Medicine, Legal GA 534YX UT ISI:000174618300001 ER PT J AU Lai, SCN Mak, YF Cheung, GSP Osorio, R Toledano, M Carvalho, RM Tay, FR Pashley, DH TI Reversal of compromised bonding to oxidized etched dentin SO JOURNAL OF DENTAL RESEARCH LA English DT Article DE sodium ascorbate; sodium hypochlorite; hydrogen peroxide; microtensile bond strength; ultrastructure ID NITROGEN-CENTERED RADICALS; HYPOCHLOROUS ACID; PROTEIN FRAGMENTATION; ARTICULAR-CARTILAGE; RESIN COMPOSITE; COLLAGEN; ADHESION; OXIDATION; CHLORAMINES; MECHANISMS AB The mechanism responsible for hydrogen-peroxide- or sodium-hypochlorite-induced reductions in dentin bond strength is unknown. This in vitro study tested the hypothesis that these oxidizing agents were responsible by attempting to reverse the effect with sodium ascorbate, a reducing agent. Human dentin was treated with these oxidants before or after being acid-etched and with or without post-treatment with sodium ascorbate. They were bonded with either Single Bond or Excite. Hydrogen peroxide reduced the bond strengths of both adhesives, while sodium hypochlorite produced reduction in adhesion of only Single Bond (p < 0.05). Following treatment with sodium ascorbate, reductions in bond strength were reversed. Transmission and scanning electron microscopy showed partial removal of the demineralized collagen matrix only by sodium hypochlorite. The observed compromised bond strengths cannot be attributed to incomplete deproteinization and may be related to changes in the redox potential of the bonding substrates. C1 Univ Hong Kong, Fac Dent, Prince Philip Dent Hosp, Hong Kong, Hong Kong, Peoples R China. Univ Granada, Dept Dent Mat, Granada, Spain. Univ Sao Paulo, Bauru Sch Dent, Sao Paulo, Brazil. Med Coll Georgia, Sch Dent, Dept Oral Biol & Maxillofacial Pathol, Augusta, GA 30912 USA. RP Tay, FR, Univ Hong Kong, Fac Dent, Prince Philip Dent Hosp, 34 Hosp Rd, Hong Kong, Hong Kong, Peoples R China. NR 29 TC 53 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD OCT PY 2001 VL 80 IS 10 BP 1919 EP 1924 PG 6 SC Dentistry, Oral Surgery & Medicine GA 536CZ UT ISI:000174684300011 ER PT J AU Marra, CA Giron, MD Suare, MD TI Evidence in favor of a facilitated transport system for FA uptake in cultured L6 cells SO LIPIDS LA English DT Article ID FATTY-ACID-BINDING; RAT-HEART MYOCYTES; HUMAN PLASMA ALBUMIN; PROTEIN EXPRESSION; CARDIAC MYOCYTES; LIPID-METABOLISM; CELLULAR UPTAKE; SERUM-ALBUMIN; LIVER; FIBROBLASTS AB In this manuscript we report a study of the transport of FA in L6 muscle cells. Cultured L6 cells took up labeled FA (C-10 to C-20) as a linear function of time up to 15 min. Thereafter, the rate of uptake gradually declined although it persisted for at least 12 h after the addition of the substrate. Kinetic parameters (K-m, V-m, and k(o)) were determined from a fitted Michaelis-Menten-type equation modified by a term for a saturable (linear) component of the measured total uptake. V-m values were different for some of the FA studied, and K-m data showed significant differences between saturated and unsaturated FA. The maximal rate of uptake was observed at pH 7.40 for decanoate, palmitate, and eicosatrienoate. Uptake was significantly influenced when the pH of the incubation medium was changed. Experiments designed to study the influence of FA/albumin molar ratio indicated that V-m was dependent on the total (bound and free) concentration of the FA. A concentrative uptake was demonstrated in short-term experiments with an apparent plateau of 20 and 40 muM for palmitate and eicosatrienoate, respectively. A competitive inhibition was also observed between palmitate as substrate and the other FA. From our results we can postulate that the uptake of FA in L6 cells is the sum of passive diffusion plus a saturable component and that the rate of uptake is dependent on one (or more) protein structures, although their precise characteristics and functions remain to be elucidated. C1 Natl Univ La Plata, Fac Ciencias Med, CONICET, INIBIOLP, RA-1900 La Plata, Argentina. Univ Granada, Fac Farm, Dept Bioquim & Biol Mol, Granada, Spain. RP Marra, CA, Natl Univ La Plata, Fac Med, 60 & 120, RA-1900 La Plata, Argentina. NR 54 TC 1 PU AMER OIL CHEMISTS SOC A O C S PRESS PI CHAMPAIGN PA 1608 BROADMOOR DRIVE, CHAMPAIGN, IL 61821-0489 USA SN 0024-4201 J9 LIPIDS JI Lipids PD MAR PY 2002 VL 37 IS 3 BP 273 EP 283 PG 11 SC Biochemistry & Molecular Biology; Nutrition & Dietetics GA 536UQ UT ISI:000174720600007 ER PT J AU Kadane, JB Moreno, E Perez, ME Pericchi, LR TI Applying non-parametric robust Bayesian analysis to non-opinionated judicial neutrality SO JOURNAL OF STATISTICAL PLANNING AND INFERENCE LA English DT Article DE discrimination; elicitation; law; linearization; moment problem ID CLINICAL-TRIALS AB This paper explores the usefulness of robust Bayesian analysis in the context of an applied problem, finding priors to model judicial neutrality in an age discrimination case. We seek large classes of prior distributions without trivial bounds on the posterior probability of a key set, that is, without bounds that are independent of the data. Such an exploration shows qualitatively where the prior elicitation matters most, and quantitatively how sensitive the conclusions are to specified prior changes. The novel non-parametric classes proposed and studied here represent judicial neutrality and are reasonably wide, so that when a clear conclusion emerges from the data at hand, this is arguably very reliable. (C) 2002 Published by Elsevier Science B.V. C1 Carnegie Mellon Univ, Dept Stat, Pittsburgh, PA 15213 USA. Univ Granada, Granada, Spain. Univ Simon Bolivar, Caracas, Venezuela. NR 20 TC 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3758 J9 J STATIST PLAN INFER JI J. Stat. Plan. Infer. PD APR 1 PY 2002 VL 102 IS 2 BP 425 EP 439 PG 15 SC Statistics & Probability GA 542AH UT ISI:000175020100016 ER PT J AU Hoyos, SEG Nieto, LM Rubio, FC Cormenzana, AR TI Kinetics of aerobic treatment of olive-mill wastewater (OMW) with Aspergillus terreus SO PROCESS BIOCHEMISTRY LA English DT Article DE Aspergillus terreus; degradation; elimination rate; kinetics; olive-mill waste ID WATER AB A kinetic study was carried out on the aerobic treatment of olive-mill wastewater by fermentation with Aspergillus terreus. The bioreactor used was batch fed at several concentrations. The aerobic treatment process followed a Quiroga and Sales model, which is represented by a second-grade polynomial from which the kinetic constants; maximum substrate concentration (h), maximum specific growth rate (P) and organic matter present in the medium (q) were calculated by using a non-linear regression. The mean values for chemical oxygen demand (COD) elimination velocity were 126.3 mg l(-1) h(-1) in the first 24 h and 77.3 mg l(-1) h(-1) at 72 h, An increase in airflow allowed higher degradation percentages in less time (COD: 65.77% and BOD: 85.41%). The kinetic parameters 'q = S', corresponds to the organic matter present in the medium, which cannot be metabolized by the microorganisms under operating conditions. The value of P = mu(max) was influenced by the transfer of pure oxygen, the value of theta(c)(M) (minimum cellular retention time) decreased from 22.42 h for air with a porous plate to 8.31 h for pure oxygen. (C) 2002 Elsevier Science Ltd. All rights reserved. C1 Ctr Interamer Recursos Agua Interamer Ctr Water R, CIRA, Toluca 50130, Edo De Mexico, Mexico. Univ Granada, Dept Chem Engn, Fac Sci, Granada, Spain. Univ Granada, Dept Microbiol, Fac Pharm, Granada, Spain. RP Hoyos, SEG, Ctr Interamer Recursos Agua Interamer Ctr Water R, CIRA, Toluca 50130, Edo De Mexico, Mexico. NR 19 TC 9 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0032-9592 J9 PROCESS BIOCHEM JI Process Biochem. PD MAY PY 2002 VL 37 IS 10 BP 1169 EP 1176 PG 8 SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Engineering, Chemical GA 542HW UT ISI:000175038300016 ER PT J AU Leone, R Odriozola, G Mussio, L Schmitt, A Hidalgo-Alvarez, R TI Coupled aggregation and sedimentation processes: Three-dimensional off-lattice simulations SO EUROPEAN PHYSICAL JOURNAL E LA English DT Article ID LIMITED COLLOID AGGREGATION; DILUTE POLYDISPERSE SYSTEM; COMPUTER-SIMULATIONS; INTERACTING SPHERES; SUSPENSIONS AB Coupled aggregation and sedimentation processes were studied by means of three- dimensional computer simulations. For this purpose, a large prism with no periodic boundary conditions for the sedimentation direction was considered. Furthermore, three equally sized and mutually excluded regions were defined inside the prism, a top, a middle and a bottom region. This allows to study he time evolution of the cluster size distribution and the cluster structure separately for each region. The mass distribution profile and the center-of-mass position were also accessed as a function of time. For the bottom region. the effects of the sediment formation on the kinetics of growth and on the cluster structure were clearly observed. The obtained results not only agree with the experimental data obtained by Allain et al. (C. Allain, M. Cloitre, M. Wafra, Phys. Rev. Lett. 74, 1-178 (1995)) and with the simulations made by Gonzalez (A.E. Gonzalez, Phys. Rev. Lett. 86, 1243 (2001)), but also allow to gain further insight into the details. C1 Univ Republica, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. Univ Granada, Fac Ciencias, Dept Fis Aplicada, E-18071 Granada, Spain. RP Leone, R, Univ Republica, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. NR 25 TC 9 PU SPRINGER-VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 1292-8941 J9 EUR PHYS J E JI Eur. Phys. J. E PD FEB PY 2002 VL 7 IS 2 BP 153 EP 161 DI 10.1140/epje/i200101167 PG 9 SC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Polymer Science GA 542JW UT ISI:000175040600006 ER PT J AU Molina, JM Dobado, JA Daza, MC Villaveces, JL TI Structure and bonding of weak hydrogen peroxide complexes SO JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM LA English DT Article DE intermolecular interactions; atoms in molecules theory; basis set superposition error; ootential energy surface; ab initio calculations ID SET SUPERPOSITION ERROR; RARE-GAS CLUSTERS; AB-INITIO; UNIMOLECULAR DECOMPOSITION; THERMODYNAMIC PROPERTIES; VIBRATIONAL FREQUENCIES; POLYATOMIC-MOLECULES; ENERGY; DIMERS; DFT AB The B3LYP and MP2 theoretical levels, with the 6-311 + G(3df,2p) basis set, have been used to characterize different vdW complexes, between hydrogen peroxide (HP) and nitrogen (4, 8 and 12), helium (1, 5 and 9), neon (2, 6 and 10) and argon (3,7 and 11). Additional MP4 and CCSD(T) calculations were also performed to test the validity of the MP2 results, for the HP... He structures. Cyclic TSs and linear or cyclic minima were found on their corresponding PESs. The atoms-in-molecules theory (AIM) was also used to analyze the intermolecular interactions and the possible cyclic or linear nature for all the complexes. In addition, the binding energy (DeltaE(b)) was corrected for the BSSE by the counterpoise (CP) method. Moreover, calculations were performed also on the BSSE-corrected PESs. The MP2 results yielded very weak BSSE corrected DeltaE(b) (-0.1 to -6.4 kJ mol(-1) range). However, the B3LYP method gave positive DEb values for some complexes, resulting in an incorrect energy description. Structural differences were also found on their corresponding BSSE-corrected PESs compared to the uncorrected ones. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Granada, Inst Biotecnol, Grp Modelizac & Diseno Mol, E-18071 Granada, Spain. Univ Nacl Colombia, Fac Ciencias, Grp Quim Teor, Bogota, Colombia. RP Dobado, JA, Univ Granada, Inst Biotecnol, Grp Modelizac & Diseno Mol, Campus Fuentenueva, E-18071 Granada, Spain. NR 34 TC 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-1280 J9 J MOL STRUC-THEOCHEM JI Theochem-J. Mol. Struct. PD MAR 29 PY 2002 VL 580 SI Sp. Iss. SI BP 117 EP 126 PG 10 SC Chemistry, Physical GA 546DG UT ISI:000175256200015 ER PT J AU Carrillo, JA Lederman, C Markowich, PA Toscani, G TI Poincare inequalities for linearizations of very fast diffusion equations SO NONLINEARITY LA English DT Article ID LOGARITHMIC SOBOLEV INEQUALITIES; PLANCK-TYPE EQUATIONS; POROUS-MEDIUM; EQUILIBRIUM; CONVERGENCE AB In this paper we investigate the large-time asymptotic of linearized very fast diffusion equations with and without potential confinements. These equations do not satisfy, in general, logarithmic Sobolev inequalities, but, as we show by using the 'Bakry-Emery reverse approach', in the confined case they have a positive spectral gap at the eigenvalue zero. We present estimates for this spectral gap and draw conclusions on the time decay of the solution, which we show to be exponential for the problem with confinement and algebraic for the pure diffusive case. These results hold for arbitrary algebraically large diffusion speeds, if the solutions have the mass-conservation property. C1 Univ Granada, Dept Matemat Aplicada, Granada 18071, Spain. Univ Buenos Aires, Dept Matemat, RA-1428 Buenos Aires, DF, Argentina. Univ Vienna, Inst Math, A-1090 Vienna, Austria. Univ Pavia, Dipartimento Matemat, I-27100 Pavia, Italy. RP Carrillo, JA, Univ Granada, Dept Matemat Aplicada, Granada 18071, Spain. NR 21 TC 9 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0951-7715 J9 NONLINEARITY JI Nonlinearity PD MAY PY 2002 VL 15 IS 3 BP 565 EP 580 PG 16 SC Mathematics, Applied; Physics, Mathematical GA 553VV UT ISI:000175697700004 ER PT J AU Capitan-Vallvey, LF Duque, O Navas, N TI A simple system to preconcentrate copper, cadmium and lead on diethylammonium-N,N-diethyldithiocarbamate retained on C-18 cartridge from environmental water samples SO QUIMICA ANALITICA LA English DT Article DE copper; cadmium; lead determination; diethylammonium-N,N-diethyldithiocarbamate; preconcentration; C-18 silica cartridge ID ATOMIC-ABSORPTION SPECTROMETRY; ONLINE SORBENT EXTRACTION; FLOW-INJECTION SYSTEM; TRACE AMOUNTS; HEAVY-METALS; IMMOBILIZED 8-QUINOLINOL; ACTIVATED CARBON; FLAME; IONS; ADSORPTION AB A new technique has been developed for the preconcentration of copper, cadmium and lead in environmental water samples. Diethylammonium-N,N-diethyldithiocarbamate (DDDC) was previously retained on a C-18 silica cartridge by passing it through a solution of 0.1% (w/v). Copper, cadmium and lead were quantitatively preconcentrated in this modified C-18 cartridge by forming metal complexes. The preconcentration can be achieved in situ, because the stability of the modified cartridge is such that it lasts for more than two months and no sample treatment, except filtration if necessary, is required. The chelates formed into the cartridge were eluted with 4:1 (v/v) methanol/nitric acid at 20% and they were analysed by flame atomic absorption spectrometry. The preconcentration factor achieved was 100 and concentration levels in water of 1 mug L-1 of Cu, 0.5 mug L-1 of Cd and 20 mug L-1 of Pb were detected. The method was applied to analyse these metals in natural water samples. C1 Univ Granada, Dept Analyt Chem, E-18071 Granada, Spain. Univ La Havana, IMRE, Havana, Cuba. RP Capitan-Vallvey, LF, Univ Granada, Dept Analyt Chem, C Fuentenueva S-N, E-18071 Granada, Spain. NR 30 TC 5 PU ELSEVIER INFORMACION PROFESSIONAL, S A PI BARCELONA PA C/ENTENCA, 28 ENTL, 08015 BARCELONA, SPAIN SN 0212-0569 J9 QUIM ANAL JI Quim. Anal. PY 2002 VL 20 IS 4 BP 197 EP 202 PG 6 SC Chemistry, Analytical GA 557RN UT ISI:000175922100005 ER PT J AU Ceballos, L Toledano, M Osorio, R Itou, K Agee, K Carvalho, RM Wataha, JC Pashley, DH Tay, FR TI Viscoelastic properties of dentin matrix: Creep. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Granada, E-18071 Granada, Spain. Okayama Univ, Sch Dent, Okayama 7008530, Japan. Med Coll Georgia, Augusta, GA 30912 USA. Univ Sao Paulo, BR-05508 Sao Paulo, Brazil. Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD MAR PY 2002 VL 81 SI Sp. Iss. SI BP A51 EP A51 PG 1 SC Dentistry, Oral Surgery & Medicine GA 559KE UT ISI:000176024700187 ER PT J AU Otsuki, M Yamauti, M Tagami, J Carvalho, RM Silva, NRFA Fuentes, MV TI Dentin bond strength of auto-cured composite with/without flowable composite. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Tokyo Med & Dent Univ, Tokyo 1138549, Japan. USP, Bauru Dent Sch, Bauru, Brazil. Univ Sao Paulo, BR-05508 Sao Paulo, Brazil. Univ Granada, E-18071 Granada, Spain. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD MAR PY 2002 VL 81 SI Sp. Iss. SI BP A71 EP A71 PG 1 SC Dentistry, Oral Surgery & Medicine GA 559KE UT ISI:000176024700359 ER PT J AU Garcia, FCP Carvalho, RM Otsuki, M Fuentes, MV Pashley, DH TI Effects of solvents on the stiffening rate of demineralized dentin matrix. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Sao Paulo, Sao Paulo, Brazil. Tokyo Med & Dent Univ, Tokyo, Japan. Univ Granada, E-18071 Granada, Spain. Med Coll Georgia, Augusta, GA 30912 USA. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD MAR PY 2002 VL 81 SI Sp. Iss. SI BP A174 EP A174 PG 1 SC Dentistry, Oral Surgery & Medicine GA 559KE UT ISI:000176024701243 ER PT J AU Fuentes, MV Carvalho, RM Toledano, M Osorio, R Ceballos, L Otsuki, M Pashley, DH TI Tensile strength of sound vs. caries-affected mineralized and demineralized dentin. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Granada, E-18071 Granada, Spain. Univ Sao Paulo, Sao Paulo, Brazil. Tokyo Med & Dent Univ, Tokyo, Japan. Med Coll Georgia, Augusta, GA 30912 USA. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD MAR PY 2002 VL 81 SI Sp. Iss. SI BP A175 EP A175 PG 1 SC Dentistry, Oral Surgery & Medicine GA 559KE UT ISI:000176024701248 ER PT J AU Lai, S Tay, FR Mak, YF Cheung, GSP Toledano, M Osorio, R Carvalho, RM Pashley, DH TI Reversal of compromised bonding in carbamide peroxide-bleached enamel. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China. Univ Granada, E-18071 Granada, Spain. Univ Sao Paulo, BR-05508 Sao Paulo, Brazil. Med Coll Georgia, Augusta, GA 30912 USA. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD MAR PY 2002 VL 81 SI Sp. Iss. SI BP A223 EP A223 PG 1 SC Dentistry, Oral Surgery & Medicine GA 559KE UT ISI:000176024701670 ER PT J AU Ceballos, A Gaitan, L Ceballos, L TI Oral lesions in HIV plus /AIDS patients under highly active antiretroviral therapy for long time. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Granada, E-18071 Granada, Spain. Natl Autonomous Univ Mexico, Mexico City 04510, DF, Mexico. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD MAR PY 2002 VL 81 SI Sp. Iss. SI BP A229 EP A229 PG 1 SC Dentistry, Oral Surgery & Medicine GA 559KE UT ISI:000176024701729 ER PT J AU Osinaga, W Toledano, M Osorio, R TI Surface hardness of dental composites after aging in water SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Fed Univ Pelotas, Pelotas, Brazil. Univ Granada, E-18071 Granada, Spain. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD MAR PY 2002 VL 81 SI Sp. Iss. SI BP A338 EP A338 PG 1 SC Dentistry, Oral Surgery & Medicine GA 559KE UT ISI:000176024702668 ER PT J AU Fuentes, MV Osorio, R Toledanoi, M Carvalho, RM TI Effects of treatments on the microhardness of superficial and deep dentin. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Granada, E-18071 Granada, Spain. Univ Sao Paulo, Baruru Dent Sch, Sao Paulo, Brazil. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD MAR PY 2002 VL 81 SI Sp. Iss. SI BP A359 EP A359 PG 1 SC Dentistry, Oral Surgery & Medicine GA 559KE UT ISI:000176024702853 ER PT J AU Itou, K Tay, FR Torii, Y Agee, K Ceballos, L Carvalhos, RM Yoshiyama, M Pashley, DH TI Effects of testing speed and gripping on bond strength. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Okayama Univ, Sch Dent, Okayama 700, Japan. Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China. Med Coll Georgia, Augusta, GA 30912 USA. Univ Granada, E-18071 Granada, Spain. Univ Sao Paulo, BR-05508 Sao Paulo, Brazil. NR 0 TC 1 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD MAR PY 2002 VL 81 SI Sp. Iss. SI BP A415 EP A415 PG 1 SC Dentistry, Oral Surgery & Medicine GA 559KE UT ISI:000176024703331 ER PT J AU Ramos, O Osorio, R Demarco, F Toledano, M TI Effect of C Factor changes on the microleakage of class II cavities. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Fed Univ Pelotas, Pelotas, Brazil. Univ Granada, E-18071 Granada, Spain. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD MAR PY 2002 VL 81 SI Sp. Iss. SI BP A419 EP A419 PG 1 SC Dentistry, Oral Surgery & Medicine GA 559KE UT ISI:000176024703370 ER PT J AU Toledano, M Osorio, R Leonardi, G Ceballos, L Tay, FR TI Micro and nanoleakage of self-etching primers. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Natl Univ Cordoba, Cordoba, Argentina. Univ Granada, E-18071 Granada, Spain. Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD MAR PY 2002 VL 81 SI Sp. Iss. SI BP A468 EP A468 PG 1 SC Dentistry, Oral Surgery & Medicine GA 559KE UT ISI:000176024703793 ER PT J AU Acevedo, O Guzman-Casado, M Garcia-Mira, MM Ibarra-Molero, B Sanchez-Ruiz, JM TI pH corrections in chemical denaturant solutions SO ANALYTICAL BIOCHEMISTRY LA English DT Article ID THERMODYNAMIC CONSTANTS; WATER DIOXANE; IONIZATION; TAUTOMERISM C1 Univ Granada, Fac Ciencias, Dept Quim Fis, E-18071 Granada, Spain. Pontif Univ Javeriana, Dept Fis, Fac Ciencias, Bogota, Colombia. RP Sanchez-Ruiz, JM, Univ Granada, Fac Ciencias, Dept Quim Fis, Fuentenueva S-N, E-18071 Granada, Spain. NR 13 TC 13 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0003-2697 J9 ANAL BIOCHEM JI Anal. Biochem. PD JUL 1 PY 2002 VL 306 IS 1 BP 158 EP 161 DI 10.1006/abio.2002.5668 PG 4 SC Biochemical Research Methods; Biochemistry & Molecular Biology; Chemistry, Analytical GA 568CE UT ISI:000176524200024 ER PT J AU Lai, SCN Tay, FR Cheung, GSP Mak, YF Carvalho, RM Wei, SHY Toledano, M Osorio, R Pashley, DH TI Reversal of compromised bonding in bleached enamel SO JOURNAL OF DENTAL RESEARCH LA English DT Article DE carbamide peroxide; sodium ascorbate; microtensile bond strength; ultrastructure ID CARBAMIDE-PEROXIDE; COMPOSITE RESIN; BOVINE ENAMEL; HYDROGEN-PEROXIDE; STRENGTH; AGENTS; MICROHARDNESS; NANOLEAKAGE; ADHESIVES; TIME AB Oxygen inhibits polymerization of resin-based materials. We hypothesized that compromised bonding to bleached enamel can be reversed with sodium ascorbate, an anti-oxidant. Sandblasted human enamel specimens were treated with distilled water (control) and 10% carbamide peroxide gel with or without further treatment with 10% sodium ascorbate. They were bonded with Single Bond (3M-ESPE) or Prime&Bond NT (Dentsply DeTrey) and restored with a composite. Specimens were prepared for microtensile bond testing and transmission electron microscopy after immersion in ammoniacal silver nitrate for nanoleakage evaluation. Bond strengths of both adhesives were reduced after bleaching but were reversed following sodium ascorbate treatment (P < 0.001). Resin-enamel interfaces in bleached enamel exhibited more extensive nanoleakage in the form of isolated silver grains and bubble-like silver deposits. Reduction of resin-enamel bond strength in bleached etched enamel is likely to be caused by a delayed release of oxygen that affects the polymerization of resin components. C1 Univ Hong Kong, Prince Philip Dent Hosp, Fac Dent, Hong Kong, Hong Kong, Peoples R China. Univ Sao Paulo, Bauru Sch Dent, BR-05508 Sao Paulo, Brazil. Univ Granada, Dept Dent Mat, E-18071 Granada, Spain. Med Coll Georgia, Sch Dent, Dept Oral Biol & Maxillofacial Pathol, Augusta, GA 30912 USA. RP Tay, FR, Univ Hong Kong, Prince Philip Dent Hosp, Fac Dent, 34 Hosp Rd, Hong Kong, Hong Kong, Peoples R China. NR 30 TC 37 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD JUL PY 2002 VL 81 IS 7 BP 477 EP 481 PG 5 SC Dentistry, Oral Surgery & Medicine GA 569CK UT ISI:000176582400009 ER PT J AU Lopez-Munguira, A Nieto, F Morata, D TI Chlorite composition and geothermometry: a comparative HRTEM/AEM-EMPA-XRD study of Cambrian basic lavas from the Ossa Morena Zone, SW Spain SO CLAY MINERALS LA English DT Article DE chlorite; metabasites; very low-grade metamorphism; chemical composition; thermometry ID METAMORPHIC EVOLUTION; ELECTRON-MICROSCOPY; CRYSTAL-GROWTH; GRADE; ROCKS; TEM; METAPELITES; METABASITES; THERMOMETRY; CONSTRAINTS AB Chlorites from Cambrian basaltic vesicular lavas, characterized by relatively high X-c (0.81-0.98), gave temperatures of formation of 285 to 350degreesC (Cathelineau's empirical geothermometer). Both the X-c and temperature calculations gave results which were too high for the diagenetic conditions indicated by the interbedded shale mineralogy. The HRTEM and XRD studies indicate the absence of smectite layers in these chlorites; i.e. according to lattice images, the actual value of X-c is 1. The chlorite composition in these basaltic lavas must, therefore, be explained in relation to their whole-rock geochemistry, with which a good correlation has been found. The basaltic lavas are characterized by relatively high FeO/MgO ratios (3.28 +/- 1.66) and must be considered as an Fe-rich system, with similar chemical behaviour to pelitic rocks. In these cases, direct chlorite formation, without a previous smectite precursor, is a normal occurrence and the X-c calculation and empirical geothermometric calculations are inadequate. C1 Univ Extremadura, Fac Ciencias, Area Cristalog & Mineral, E-06071 Badajoz, Spain. Univ Granada, CSIC, Dept Mineral & Petrol, Granada 18002, Spain. Univ Granada, CSIC, IACT, Granada 18002, Spain. Univ Chile, Fac Ciencias Fis & Matemat, Dept Geol, Santiago, Chile. RP Lopez-Munguira, A, Univ Extremadura, Fac Ciencias, Area Cristalog & Mineral, Avda Elvas S-N, E-06071 Badajoz, Spain. NR 40 TC 4 PU MINERALOGICAL SOCIETY PI LONDON PA 41 QUEENS GATE, LONDON SW7 5HR, ENGLAND SN 0009-8558 J9 CLAY MINER JI Clay Min. PD JUN PY 2002 VL 37 IS 2 BP 267 EP 281 DI 10.1180/0009855023720033 PG 15 SC Mineralogy GA 571VA UT ISI:000176738800006 ER PT J AU Hurtado, PI Marro, J Albano, EV TI Growth and scaling in anisotropic spinodal decomposition SO EUROPHYSICS LETTERS LA English DT Article ID PHASE-SEPARATION; COMPUTER-SIMULATION; BINARY-MIXTURES; TIME EVOLUTION; LATTICE-GAS; SHEAR-FLOW; DYNAMICS; KINETICS; MODEL; TRANSITION AB We studied phase separation in a particle interacting system under a large drive along x. We here identify the basic growth mechanisms, and demonstrate time self-similarity, finite-size scaling, as well as other interesting features of both the structure factor and the scaling function. We also show that, at late t in two dimensions, there is a unique t-dependent length increasing l(y) (t) similar to t 1(/3) for macroscopic systems. Our results, which follow as a direct consequence of the underlying anisotropy, may characterize a class of nonequilibrium situations. C1 Univ Granada, Inst Carlos Fis Teor & Computac 1, E-18071 Granada, Spain. Univ Granada, Dept Electromagnetismo & Fis Mat, E-18071 Granada, Spain. Natl Univ La Plata, CONICET, Inst Invest Fisicoquim Teor & Aplicadas, RA-1900 La Plata, Argentina. RP Hurtado, PI, Univ Granada, Inst Carlos Fis Teor & Computac 1, E-18071 Granada, Spain. NR 22 TC 4 PU E D P SCIENCES PI LES ULIS CEDEXA PA 7, AVE DU HOGGAR, PARC D ACTIVITES COURTABOEUF, BP 112, F-91944 LES ULIS CEDEXA, FRANCE SN 0295-5075 J9 EUROPHYS LETT JI Europhys. Lett. PD JUL PY 2002 VL 59 IS 1 BP 14 EP 20 PG 7 SC Physics, Multidisciplinary GA 571VW UT ISI:000176740700003 ER PT J AU Morales, JA Monterrosa, JC Alvarez, JC Entrala, C Lorente, JA Lorente, M Budowle, B Villanueva, E TI Population data on nine STIR loci in an El Salvadoran (Central American) sample population SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE forensic science; DNA typing; population genetics; El Salvador; Central America ID GENETIC-VARIATION C1 Univ Granada, Lab Genet Identificat, Dept Legal Med, Fac Med, E-18012 Granada, Spain. Inst Med Legal Roberto Masferrei, Corte Suprema Justicia, Lab DNA, San Salvador, El Salvador. FBI Acad, FBI Lab, Quantico, VA USA. RP Lorente, JA, Univ Granada, Lab Genet Identificat, Dept Legal Med, Fac Med, Av Madrid 2, E-18012 Granada, Spain. NR 7 TC 4 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD JUL PY 2002 VL 47 IS 4 BP 900 EP 901 PG 2 SC Medicine, Legal GA 572MW UT ISI:000176779800027 ER PT J AU Araujo, SMSR Pompolo, SG Perfectti, F Camacho, JPM TI Integration of a B chromosome into the A genome of a wasp, revisited SO PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES LA English DT Article DE B-chromosome frequency; population dynamics; Trypoxylon albitarse; drive; meiotic behaviour; integration ID GRASSHOPPER EYPREPOCNEMIS-PLORANS; PSEUDOCOCCUS-AFFINIS; MEIOTIC DRIVE; MEALYBUG; OBSCURUS AB A previous study showed that in the haplodiploid solitary wasp Trypoxylon albitarse, most individuals carry one B chromosome per haploid genome, the same dosage as the standard (A) chromosomes, indicating a possible regularization of B-chromosome meiotic behaviour and its integration into the A genome. In a new sampling, we have analysed 15 populations (including 9 out of the 10 previously analysed) to test the evolution of this integration process. The new results provide a direct report of the invasion process in the Porto Firme population, where B frequency has dramatically increased in only four generations. In the populations from the Viqosa region, however, B frequency has remained stable, although the principal B type, the metacentric one, has increased in frequency at the expense of the acrocentric one in several populations. The implications of these new results on the hypothesis of the integration of these B chromosomes, as regular members of the A genome, are discussed. C1 Univ Granada, Fac Ciencias, Dept Genet, E-18071 Granada, Spain. Univ Estadual Campinas, UNICAMP, Dept Biol Celular, BR-13083 Campinas, SP, Brazil. Univ Fed Vicosa, UFV, Dept Biol Geral, BR-36571000 Vicosa, MG, Brazil. RP Perfectti, F, Univ Granada, Fac Ciencias, Dept Genet, E-18071 Granada, Spain. NR 12 TC 3 PU ROYAL SOC LONDON PI LONDON PA 6 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 0962-8452 J9 PROC ROY SOC LONDON SER B JI Proc. R. Soc. Lond. Ser. B-Biol. Sci. PD JUL 22 PY 2002 VL 269 IS 1499 BP 1475 EP 1478 DI 10.1098/rspb.2002.2040 PG 4 SC Biology GA 578RE UT ISI:000177132100009 ER PT J AU Garcia-Casco, A Torres-Roldan, RL Millan, G Monie, P Schneider, J TI Oscillatory zoning in eclogitic garnet and amphibole, Northern Serpentinite Melange, Cuba: a record of tectonic instability during subduction? SO JOURNAL OF METAMORPHIC GEOLOGY LA English DT Article DE amphibole; Caribbean; eclogite; garnet; oscillatory zoning ID PRESSURE-TEMPERATURE EVOLUTION; FE-MG GEOTHERMOMETER; P-T EVOLUTION; ALUMINOSILICATE GARNETS; DIFFUSION-COEFFICIENTS; NORTHWEST TURKEY; PELITIC GARNET; PACHECO-PASS; EASTERN ALPS; CALIBRATION AB Exotic blocks of eclogite from distant localities along the Northern Serpentinite Melange of Cuba have comparable P-T histories that include high-pressure prograde sections (450-600 degreesC, >15 kbar) associated with subduction of oceanic lithosphere, and retrograde sections within the albite-epidote amphibolite facies (<500 &DEG;C, <10 kbar) related to melange uplift. (40) Ar/(39) Ar and Rb/Sr cooling ages (118-103 Ma) of one of the blocks indicate pre-Aptian subduction and Aptian-Albian uplift. Detailed X-ray imaging and profiling further reveals that minerals in these eclogite blocks (notably garnet and amphibole) display subtle but well defined oscillatory zoning that developed along the prograde trajectory of the rocks, previous to attainment of peak eclogitic conditions. The chemistry (e.g. coupled changes of Mg# and Mn in garnet, and of Si, Ti, Al and Na in amphibole) and geometry (euhedral to anhedral shapes) of the oscillations can be interpreted in terms of subtle fluctuations in P-T during the general prograde subduction-related metamorphic path. A (near-) equilibrium model is presented for the formation of oscillations at near peak conditions by means of recurrent dissolution-growth reaction processes. This model for near-peak conditions, and the chemical signatures of earlier oscillations (notably in amphibole), suggest that episodes of retrogression (upward movement?) affected parts of the subducting slab. It is proposed that these retrograde episodes record the tectonic rupture of the subducting slab and, probably, of the upper plate mantle, either due to the intrinsic dynamic behaviour of subduction systems or to the effects of the plate-tectonic rearrangement of the Caribbean region during the Early Cretaceous. C1 Univ Granada, Dept Mineral & Petrol, Granada 18002, Spain. Inst Geol & Paleontol, Havana, Cuba. USTL, Lab Tecton & Geochronol, CNRS, URA 1371, F-34095 Montpellier, France. RP Garcia-Casco, A, Univ Granada, Dept Mineral & Petrol, Fuentenueva S-N, Granada 18002, Spain. NR 82 TC 7 PU BLACKWELL PUBLISHING INC PI MALDEN PA 350 MAIN ST, MALDEN, MA 02148 USA SN 0263-4929 J9 J METAMORPH GEOL JI J. Metamorph. Geol. PD AUG PY 2002 VL 20 IS 6 BP 581 EP 598 PG 18 SC Geology GA 578YT UT ISI:000177149200004 ER PT J AU Rivera-Utrilla, J Sanchez-Polo, M Mondaca, MA Zaror, CA TI Effect of ozone and ozone/activated carbon treatments on genotoxic activity of naphthalenesulfonic acids SO JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY LA English DT Article DE activated carbon; genotoxicity; naphthalenesulfonic acids; ozone ID DISSOCIATING ORGANIC-COMPOUNDS; INORGANIC-COMPOUNDS; ACTIVATED CARBON; RATE CONSTANTS; MUTAGENICITY TEST; SULFONIC-ACIDS; WATER; RADICALS AB Naphthalenesulfonic compounds are widely used, mainly by the textile industry in the synthesis of azoic colorants. The presence of the sulfonic group is known to endow these compounds with high water-solubility and low biodegradability, although its influence on their genotoxic activity is unknown. The use of energetic oxidants is recommended for the degradation of organic compounds which are refractory to biological treatment. Ozone and ozone/activated carbon have been proposed as the best alternatives to remove these compounds. The results showed that the more sulfonic groups there are on the aromatic ring of this family of contaminants, the lower is their genotoxic activity. All the compounds studied presented genotoxic activity at elevated concentrations. Ames test results indicate that DNA damage was produced by substitution of nitrogenated bases. The system based on the combined use of ozone and activated carbon was the most efficacious in the depuration of water containing these contaminants. This approach rapidly degraded the naphthalenesulfonic acids, eliminated their genotoxic activity and reduced their organic material content using low doses of ozone. (C) 2002 Society of Chemical Industry C1 Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. Concepcion Univ, Dept Microbiol, Concepcion, Chile. Concepcion Univ, Dept Ingn Quim, Concepcion, Chile. RP Rivera-Utrilla, J, Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. NR 23 TC 10 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND SN 0268-2575 J9 J CHEM TECHNOL BIOTECHNOL JI J. Chem. Technol. Biotechnol. PD AUG PY 2002 VL 77 IS 8 BP 883 EP 890 DI 10.1002/jctb.655 PG 8 SC Biotechnology & Applied Microbiology; Chemistry, Multidisciplinary; Engineering, Chemical GA 580HJ UT ISI:000177228900004 ER PT J AU Cugliandolo, LF Grempel, DR Lozano, G Lozza, H Santos, CAD TI Dissipative effects on quantum glassy systems SO PHYSICAL REVIEW B LA English DT Article ID FERMI-LIQUID BEHAVIOR; SHERRINGTON-KIRKPATRICK MODEL; TIME NONEQUILIBRIUM DYNAMICS; HEISENBERG SPIN-GLASS; TRANSVERSE FIELD; 2-STATE SYSTEM; KONDO PROBLEM; EQUILIBRIUM DYNAMICS; PHASE-TRANSITIONS; SPHERICAL MODEL AB We discuss the behavior of a quantum glassy system coupled to a bath of quantum oscillators. We show that the system localizes in the absence of interactions when coupled to a sub-Ohmic bath. When interactions are switched on localization disappears and the system undergoes a phase transition towards a glassy phase. We show that the position of the critical line separating the disordered and ordered phases strongly depends on the coupling to the bath. For a given type of bath, the ordered glassy phase is favored by a stronger coupling. Ohmic, sub-Ohmic, and super-Ohmic baths lead to different transition lines. We draw our conclusions from analysis of the partition function using the replicated imaginary-time formalism and from the study of the real-time dynamics of the coupled system using the Schwinger-Keldysh closed time-path formalism. C1 Ecole Normale Super, Phys Theor Lab, F-75231 Paris 05, France. Phys Theor & Hautes Energies Lab, F-75252 Paris, France. CEA Saclay, SPCSI, F-91191 Gif Sur Yvette, France. Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina. Univ Granada, Inst Carlos I Fis Teor & Computat, E-18071 Granada, Spain. RP Cugliandolo, LF, Ecole Normale Super, Phys Theor Lab, 24 Rue Lhomond, F-75231 Paris 05, France. NR 72 TC 16 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 2002 VL 66 IS 1 AR 014444 DI 10.1103/PhysRevB.66.014444 PG 20 SC Physics, Condensed Matter GA 581HD UT ISI:000177284900110 ER PT J AU Yaich, MI Khalladi, M Zekik, I Morente, JA TI Modeling of frequency-dependent magnetized plasma in hybrid symmetrical condensed TLM method SO IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS LA English DT Article DE magnetized plasma materials; time-domain electromagnetics; TLM method ID GENERALIZED MATERIAL MODELS; Z-TRANSFORMS; FDTD AB In this paper, magnetized plasma media are modeled using the time-domain TLM method with hybrid symmetrical condensed node (HSCN). The proposed technique consists in adding voltage sources characterizing dispersive media in the HSCN. Numerical results are presented for reflection and transmission coefficients for a magnetized plasma wall, proving the efficiency of the proposed model. C1 Abdelmalek Essaadi Univ, Fac Sci, Elect & Microwaves Grp, Tetuan, Mexico. Univ Granada, Fac Sci, Dept Appl Phys, Granada, Spain. RP Yaich, MI, Abdelmalek Essaadi Univ, Fac Sci, Elect & Microwaves Grp, Tetuan, Mexico. NR 14 TC 7 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA SN 1531-1309 J9 IEEE MICROW WIREL COMPON LETT JI IEEE Microw. Wirel. Compon. Lett. PD AUG PY 2002 VL 12 IS 8 BP 293 EP 295 DI 10.1109/LMWC.2002.802027 PG 3 SC Engineering, Electrical & Electronic GA 582VU UT ISI:000177372500005 ER PT J AU Moron, I Ramirez-Lugo, L Ballesteros, MA Gutierrez, R Miranda, MI Gallo, M Bermudez-Rattoni, F TI Differential effects of bicuculline and muscimol microinjections into the nucleus basalis magnocellularis in taste and place aversive memory formation SO BEHAVIOURAL BRAIN RESEARCH LA English DT Article DE behavioral conditioning; GABA; learning; amygdala; insular cortex ID CORTICAL ACETYLCHOLINE-RELEASE; DOUBLE Y-MAZE; PASSIVE-AVOIDANCE; CHOLINERGIC PROJECTIONS; REVERSIBLE INACTIVATION; INHIBITORY AVOIDANCE; EXCITOTOXIC LESIONS; CHRONIC INFUSION; INSULAR CORTEX; WATER MAZE AB The role of the nucleus basalis magnocellularis (NBM) in learning and memory has been demonstrated in different learning paradigms such as conditioned taste aversion (CTA) and inhibitory avoidance (IA). This participation has been related to the cholinergic system, but recent studies have reported the potential role of other neurotransmitters such as GABA. The effects of acute intracerebral administration of the GABAergic antagonist bicuculline (0.05 mug) and the GABAergic agonist muscimol (0.05 mug) into the NBM of male Wistar rats were assessed in CTA and IA learning. In both learning tasks, the drug administration was performed before the acquisition. Taste aversion learning was not affected by the infusion of any of the drugs administered. IA acquisition was not affected by the administration of bicuculline or muscimol, requiring similar number of trials to reach the learning criterion. However, when the rats were tested 24 h later, those injected with bicuculline or muscimol showed an impairment of the IA learning. The present results support a role of the GABAergic system in the consolidation process of IA learning. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Granada, Dept Expt Psychol & Physiol Behav, E-18071 Granada, Spain. Univ Nacl Autonoma Mexico, Inst Fisiol Celular, Dept Neurociencias, Mexico City 04510, DF, Mexico. Univ Granada, Inst Neurosci F Oloriz, E-18071 Granada, Spain. RP Moron, I, Univ Granada, Dept Expt Psychol & Physiol Behav, Campus Cartuja, E-18071 Granada, Spain. NR 42 TC 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-4328 J9 BEHAV BRAIN RES JI Behav. Brain Res. PD AUG 21 PY 2002 VL 134 IS 1-2 BP 425 EP 431 PG 7 SC Behavioral Sciences; Neurosciences GA 595NZ UT ISI:000178116800045 ER PT J AU Nunez, D TI The method of lower and upper solutions and the stability of periodic oscillations SO NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS LA English DT Article DE periodic solutions; Lyapunov stability; twist condition; lower and upper solutions ID EQUATION; EQUILIBRIUM; EXISTENCE; SYSTEM C1 Univ Granada, Fac Ciencias, Dept Matemat Aplicada, E-18071 Granada, Spain. Univ Zulia, Dept Math & Computac 526, Maracaibo 4011, Venezuela. RP Nunez, D, Univ Granada, Fac Ciencias, Dept Matemat Aplicada, E-18071 Granada, Spain. NR 20 TC 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0362-546X J9 NONLINEAR ANAL-THEOR METH APP JI Nonlinear Anal.-Theory Methods Appl. PD DEC PY 2002 VL 51 IS 7 BP 1207 EP 1222 PG 16 SC Mathematics, Applied; Mathematics GA 598VY UT ISI:000178298200007 ER PT J AU Marin, MT Margarit, MV Salcedo, GE TI Characterization and solubility study of solid dispersions of flunarizine and polyvinylpyrrolidone SO FARMACO LA English DT Article DE solid dispersions; flunarizine; polyvinylpyrrolidone; differential scanning calorimetry; equilibrium solubility ID DISSOLUTION; SYSTEMS; PIROXICAM; BEHAVIOR AB Flunarizine is a selective calcium entry blocker poorly water-soluble. In this report, the interactions of this drug with polyvinylpyrrolidone in solid dispersions, prepared according to the dissolution method using methanol as the solvent, have been investigated, For purposes of comparison physical mixtures were prepared by simple mixture and homogeneization of the two pulverized components, Combinations of flunarizine/polyvinylpyrrolidone of the following percentage proportions were prepared: 10/90, 20/80, 30/70, 40/60, 50/50, 60/40 and 80/20 (mean particle size of 0.175 mm). The physicochemical properties of solid dispersions were investigated with X-ray diffraction, infrared spectroscopy, differential scanning calorimetry and solubility in equilibrium. X-ray patterns and differential scanning calorimetry have shown that polyvinylpyrrolidone inhibits the crystallization of flunarizine when percentages drug/polymer are 10/90, 20/80 and 30/70. The infrared spectra suggest that there was no chemical interaction between flunarizine and polyvinylpyrrolidone. Equilibrium solubility studies showed that drug solubility was enhanced as the polymer content increased. In general. the solubility increase was greater in solid dispersions than in physical mixtures and the solubility in equilibrium for solid dispersions and physical mixtures at the same drug/polymer proportion showed significant differences (P < 0.05). (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved. C1 Univ Granada, Fac Farm, Dept Pharm & Pharmaceut Technol, Sch Pharm, E-18071 Granada, Spain. Natl Univ San Antonio Abad Del Cusco, Sch Chem Phys & Math Sci, Cuzco, Peru. RP Marin, MT, Univ Granada, Fac Farm, Dept Pharm & Pharmaceut Technol, Sch Pharm, Campus Cartuja, E-18071 Granada, Spain. NR 22 TC 6 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0014-827X J9 FARMACO JI Farmaco PD SEP PY 2002 VL 57 IS 9 BP 723 EP 727 PG 5 SC Pharmacology & Pharmacy GA 599ZA UT ISI:000178364100005 ER PT J AU Araujo, SMSR Silva, CC Pompolo, SG Perfectti, F Camacho, JPM TI Genetic load caused by variation in the amount of rDNA in a wasp SO CHROMOSOME RESEARCH LA English DT Article DE genetic load; Hymenoptera; nucleolus organiser; rDNA; Trypoxylon albitarse ID NUCLEOLAR-ORGANIZER REGIONS; TROUT SALMO-TRUTTA; DROSOPHILA-MELANOGASTER; INSITU HYBRIDIZATION; POPULATION ANALYSIS; RIBOSOMAL DNA; B-CHROMOSOME; COPY NUMBER; VARIABILITY; EVOLUTION AB Extensive variation in the size of the short ( heterochromatic) arm of chromosome 14 was found in the wasp Trypoxylon (Trypargilum) albitarse. Ten different variants were differentiated by size and C-banding pattern. Fluorescent in-situ hybridization ( FISH) revealed that ribosomal DNA in this species is clustered in the darkly C-banded parts of the heterochromatic short arm of chromosome 14. On this basis, we got an indirect estimate of the amount of rDNA from the area of these dark C-bands. The significant absence in males of the three chromosome variants with lower amounts of rDNA indicates that these three variants are lethal in this sex, and suggests the existence of a threshold marking the minimum amount of rDNA which is tolerable in haploidy. This implies about 4% genetic load in the population caused by variation in rDNA amount. C1 Univ Granada, Fac Ciencias, Dept Genet, E-18071 Granada, Spain. Univ Estadual Campinas, UNICAMP, Dept Biol Celular, BR-13083970 Campinas, SP, Brazil. Univ Fed Vicosa, Dept Biol Geral, BR-36571000 Vicosa, MG, Brazil. RP Camacho, JPM, Univ Granada, Fac Ciencias, Dept Genet, E-18071 Granada, Spain. NR 39 TC 3 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0967-3849 J9 CHROMOSOME RES JI Chromosome Res. PY 2002 VL 10 IS 7 BP 607 EP 613 PG 7 SC Biochemistry & Molecular Biology; Genetics & Heredity GA 610HH UT ISI:000178954300008 ER PT J AU Gil-Zepeda, SA Luzon, F Aguirre, J Morales, J Sanchez-Sesma, FJ Ortiz-Aleman, C TI 3D seismic response of the deep basement structure of the Granada Basin (southern Spain) SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article ID RAYLEIGH-WAVES; 3-DIMENSIONAL SIMULATIONS; SEDIMENTARY BASIN; GROUND MOTIONS; SH-WAVES; P-WAVES; EARTHQUAKES; FAULT; PROPAGATION; VALLEYS AB The Granada Basin is located in the southeast of Spain, in the central sector of the Betic Cordilleras, in an area of high seismic hazard in the Iberian Peninsula. This hazard is due, in part, to local ground-motion amplification effects that have been observed at various locations in this basin. In this work, we use the indirect boundary element method (IBEM) to compute the three-dimensional (3D) seismic response of the deep structure of the Granada Basin for incident P- and S-plane waves coming from the south. We have analyzed the results in both frequency and time domains, and for the range of frequencies that we have been able to compute (between 0 and 0.312 Hz), the most relevant site effects are the local amplifications produced inside the sediments. Generally speaking, the observed amplification patterns of the displacements for incident SH waves are the highest at those locations where the basin is deeper. For P and SV waves, the "snapshots" show the amplification effects of both radial and vertical components, when the direct waves cross the Granada Basin. The amplification levels, with respect to the amplitude of the incident wave, are not so large, because the impedance contrast between the sediments and the bedrock (equal to 2.45) is relatively low. Moreover, two perpendicular receiver profiles are used to analyze the wave propagation, and we have observed the propagation of phases that can be identified as surface waves along the two profiles. The Rayleigh waves propagate with more energy on the forward direction (from south to north) of the incident body wave. C1 Univ Nacl Autonoma Mexico, Inst Ingn, Mexico City 04510, DF, Mexico. Univ Almeria, Dept Fis Aplicada, Almeria 04120, Spain. Univ Granada, Inst Andaluz Geofis & Prevenc Desastres Sism, E-18071 Granada, Spain. Inst Mexicano Petr, Mexico City 07730, DF, Mexico. RP Gil-Zepeda, SA, Univ Nacl Autonoma Mexico, Inst Ingn, Cd Univ,Apdo 70-472, Mexico City 04510, DF, Mexico. NR 32 TC 4 PU SEISMOLOGICAL SOC AMER PI EL CERRITO PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 USA SN 0037-1106 J9 BULL SEISMOL SOC AMER JI Bull. Seismol. Soc. Amer. PD AUG PY 2002 VL 92 IS 6 BP 2163 EP 2176 PG 14 SC Geochemistry & Geophysics GA 611NT UT ISI:000179024900008 ER PT J AU Moncho-Jorda, A Martinez-Lopez, F Gonzalez, AE Hidalgo-Alvarez, R TI Role of long-range repulsive interactions in two-dimensional colloidal aggregation: Experiments and simulations SO LANGMUIR LA English DT Article ID AIR-WATER-INTERFACE; 2 DIMENSIONS; MOLECULAR-DYNAMICS; BOUNDARY-LAYER; PARTICLES; MONOLAYERS; SYSTEMS; PHASES; BEADS AB A theoretical model for the interaction between colloidal particles trapped at the air-water interface is proposed in order to explain experimental aggregation results. Kinetic and structural aspects of 2D aggregation processes point out the long-range nature of the particle interactions. These interactions have been modeled by means of monopolar and dipolar repulsive forces, which depend on the monopole and dipole surface fractions at the emergent part of the colloidal particles, f(mon) and f(dip), respectively. Brownian dynamics simulations have been used to fit the model to experiment results using the fractal dimension d(f) and the kinetics exponent z as comparative parameters. Simulation results show that dipolar interaction controls aggregation at high subphase salt concentration whereas the monopolar interaction determines aggregation at low salt concentrations. Moreover, results show that f(mon) is the main parameter controlling kinetics in 2D aggregation and, hence, a critical coagulation concentration (CCC) can be defined from the salt concentration at which the monopole fraction becomes zero, f(mon) = 0. C1 Univ Granada, Biocolloid & Fluid Phys Grp, Dept Appl Phys, E-18071 Granada, Spain. Natl Autonomous Univ Mexico, Ctr Phys Sci, Cuernavaca 62251, Morelos, Mexico. RP Hidalgo-Alvarez, R, Univ Granada, Biocolloid & Fluid Phys Grp, Dept Appl Phys, E-18071 Granada, Spain. NR 44 TC 10 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD NOV 26 PY 2002 VL 18 IS 24 BP 9183 EP 9191 DI 10.1021/la0258805 PG 9 SC Chemistry, Physical GA 618QH UT ISI:000179428400012 ER PT J AU Gonzalez, AE Martinez-Lopez, F Moncho-Jorda, A Hidalgo-Alvarez, R TI Concentration effects on two- and three-dimensional colloidal aggregation SO PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS LA English DT Article DE colloidal aggregation; fractal dimension; kinetic exponents; concentration dependence ID SIMULATIONS; CLUSTERS AB By means of extensive numerical simulations of diffusion-limited colloidal aggregation in two and three dimensions, we have found the concentration dependence of the structural and dynamical quantities. Both on- and off-lattice simulations were used in 2D to check the independence of our results on the simulational algorithms and on the space structure. The range in concentration studied spanned two-and-a-half orders of magnitude, in both dimensionalities. In two dimensions, it was found that the cluster fractal dimension difference from the zero-concentration value shows a linear increase with the concentration, while this increase is of a square root type for the three-dimensional case. For the exponent z, defining the increase of the weight-average cluster size as a function of time, the difference from the zero-concentration value in three dimensions is again of a square root type increase with concentration, while in two dimensions this increase goes as the 0.6 power of the concentration. We give arguments for the drastic change in the power laws for the case of the fractal dimension, when going from two to three dimensions, and for the small change for the case of the kinetic exponent z. We also present the master curves for the scaling of the cluster size distribution and their dependence on concentration, in both dimensionalities. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Cuernavaca 62251, Morelos, Mexico. Univ Granada, Dept Fis Aplicada, Grp FIs Fluidos & Biocoloides, E-18071 Granada, Spain. RP Gonzalez, AE, Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Apartado Postal 48-3, Cuernavaca 62251, Morelos, Mexico. NR 8 TC 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4371 J9 PHYSICA A JI Physica A PD NOV 1 PY 2002 VL 314 IS 1-4 BP 235 EP 245 PG 11 SC Physics, Multidisciplinary GA 619XL UT ISI:000179502800034 ER PT J AU Arancegui, N Lucena, PH Garcia, F Baca, P Castillo, A Urena, JL TI Genotipical diversity of S mutans strains from the same origin. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract DE genotypification; S mutans C1 Univ Nacl Rosario, Fac Odontol, Cathedra Microbiol, Rosario, Argentina. Univ Granada, Fac Med, E-18071 Granada, Spain. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD DEC PY 2002 VL 81 SI Sp. Iss. B BP B11 EP B11 PG 1 SC Dentistry, Oral Surgery & Medicine GA 632HM UT ISI:000180217900044 ER PT J AU Rodriguez, JA Segura, EF Ferraris, ME Campos, A TI Effects Single Bond (3M) on cellular vibility in U937 cell line. Preliminar study. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Granada, Sch Med & Dent, Dept Histol & Cell Biol, Granada, Spain. Natl Univ Cordoba, Fac Odontol, Catedra B Histol & Embryol, Cordoba, Argentina. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD DEC PY 2002 VL 81 SI Sp. Iss. B BP B17 EP B17 PG 1 SC Dentistry, Oral Surgery & Medicine GA 632HM UT ISI:000180217900095 ER PT J AU Roldan, V Gonzalez, JC Santoro, M Garcia, S Casado, N Olivera, S Boggio, JC Salas-Peregrin, JM Signorella, S Sala, LF TI Kinetics and mechanism of the oxidation of disaccharides by Cr-VI SO CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE LA English DT Article DE chromium; saccharides; kinetics; EPR ID LIGAND-EXCHANGE REACTIONS; PERCHLORIC-ACID; CARCINOGENIC CHROMIUM(VI); AQUEOUS-SOLUTIONS; D-MANNOSE; OXOCHROMATE(V) COMPLEXES; CHROMIC OXIDATION; ELECTRON-TRANSFER; OXALIC-ACID; L-RHAMNOSE AB The oxidation of D-lactose, D-maltose, D-melibiose, and D-cellobiose by Cr-VI yields the corresponding aldobionic acid and Cr3+ as final products when an excess of reducing disaccharide over Cr-VI is used. The rate law for the Cr-VI oxidation reaction is expressed by -d[Cr-VI]/dt = k(H) [disaccharide][Cr-VI], where the second-order kinetic constant, k(H), depends on [H+]. The relative reactivity of the disaccharides with Cr-VI is expressed as follows: Mel > Lac > Cel > Mal, at 33degreesC. In acid medium, intermediate Cr-V forms and reacts with the substrate faster than Cr-VI. The EPR spectra show that five- and six-coordinate oxo-Cr-V intermediates are formed, with the disaccharide acting as bidentate ligand. Five-coordinate oxo-Cr-V species are present at any [H+], whereas six-coordinate ones are observed only at pH < 2, where they rapidly decompose to the redox products. In the pH 3-7 range, where hexa-coordinate oxo-Cr-V species are not observed, Cr-V complexes are stable enough to remain in solution from several days to several months. C1 Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim, RA-2000 Rosario, Argentina. UNL, Fac Ciencias Vet, Dept Ciencias Basicas, Esperanza, Argentina. Inst Desarrollo Technol Ind Quim, RA-3000 Santa Fe, Argentina. UNL, Fac Ciencias Vet, Dept Farmacol & Toxicol, Esperanza, Argentina. Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. RP Signorella, S, Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim, Suipacha 531, RA-2000 Rosario, Argentina. NR 61 TC 6 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA, ONTARIO K1A 0R6, CANADA SN 0008-4042 J9 CAN J CHEM JI Can. J. Chem.-Rev. Can. Chim. PD DEC PY 2002 VL 80 IS 12 BP 1676 EP 1686 DI 10.1139/V02-187 PG 11 SC Chemistry, Multidisciplinary GA 633ZK UT ISI:000180314900008 ER PT J AU Fernandez-Rosado, F Martinez-Espin, E Rodriguez, T Entrala, C Alvarez, JC Lorente, JA Lorente, M Budowle, B Villanueva, E TI Population data of Ecuador for fifteen STR loci (POWERPLEX (TM) 16) SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE forensic science; DNA typing; population genetics; Ecuador; South America ID GENETIC-VARIATION C1 Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, E-18012 Granada, Spain. Natl Police Ecuador, Criminalist DNA Lab, Quito, Ecuador. FBI Acad, FBI Lab, Quantico, VA USA. RP Lorente, JA, Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, Av Madrid 11, E-18012 Granada, Spain. NR 7 TC 0 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD JAN PY 2003 VL 48 IS 1 BP 224 EP 226 PG 3 SC Medicine, Legal GA 634PV UT ISI:000180350300051 ER PT J AU Martinez-Espin, E Fernandez-Rosado, F Alvarez, JC Entrala, C Lorente, A de Duarte, M Villanueva, E Budowle, B TI Paraguayan population data on the fifteen STIR loci included in the POWERPLEX 16 (TM) kit SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE forensic science; DNA typing; population genetics; Paraguay; South America ID GENETIC-VARIATION C1 Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, E-18012 Granada, Spain. Natl Police Paraguay, DNA Lab, Asuncion, Paraguay. FBI Acad, FBI Lab, Quantico, VA USA. RP Lorente, A, Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, Av Madrid 11, E-18012 Granada, Spain. NR 7 TC 1 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD JAN PY 2003 VL 48 IS 1 BP 253 EP 255 PG 3 SC Medicine, Legal GA 634PV UT ISI:000180350300057 ER PT J AU Hurtado, PI Marro, J Garrido, PL Albano, EV TI Kinetics of phase separation in the driven lattice gas: Self-similar pattern growth under anisotropic nonequilibrium conditions SO PHYSICAL REVIEW B LA English DT Article ID DIFFUSIVE SYSTEMS; BINARY-MIXTURES; SPINODAL DECOMPOSITION; GRAVITATIONAL-FIELD; ORDERING DYNAMICS; CRITICAL-BEHAVIOR; STEADY-STATES; MONTE-CARLO; SHEAR-FLOW; MODEL AB The driven lattice gas (DLG) evolving at low temperature helps understand the kinetics of pattern formation in unstable mixtures under anisotropic conditions. We here develop a simple theoretical description of kinetics in Monte Carlo simulations of the DLG. A Langevin continuum analog is also studied which is shown to exhibit the same behavior. We demonstrate that pattern growth is mainly a consequence of single-particle processes and that, after a short transient time, in which a surface evaporation/condensation mechanism is important, hole diffusion in the bulk becomes dominant. Consequently, there is a unique relevant length that behaves l(t)similar tot(1/3) for macroscopic systems except at some very early (perhaps unobservable) time. This implies a sort of self-similarity, namely, the spatial pattern looks alike, but for a (nontrivial) change of scale at different times. We also characterize the structure factor, in which we identify Guinier and Porod regions, and its scaling form with both time and size. The underlying anisotropy turns out to be essential in determining the macroscopically emergent peculiar behavior. C1 Univ Granada, Inst Carlos Fis Teor & Computac I, E-18071 Granada, Spain. Univ Granada, Dept Electromagnetismo & Fis Mat, E-18071 Granada, Spain. UNLP, CONICET, Inst Invest Fisicoquim Teor & Aplicadas, La Plata, Argentina. RP Hurtado, PI, Univ Granada, Inst Carlos Fis Teor & Computac I, E-18071 Granada, Spain. NR 52 TC 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN 1 PY 2003 VL 67 IS 1 AR 014206 DI 10.1103/PhysRevB.67.014206 PG 12 SC Physics, Condensed Matter GA 642XH UT ISI:000180830400038 ER PT J AU Alvarez-Nodarse, R Atakishiyeva, MK Atakishiyev, NM TI On a q-extension of the Hermite polynomials H-n(x) with the continuous orthogonality property on R SO BOLETIN DE LA SOCIEDAD MATEMATICA MEXICANA LA English DT Article DE continuous orthogonality; q-extension of the classical Hermite polynomials; discrete q-Hermite polynomials of type II; Mellin transform; Ramunujan's integral extension of the beta function ID Q-HARMONIC OSCILLATOR; COVARIANT LINEAR-OSCILLATOR; MOMENT PROBLEMS; REALIZATION; ALGEBRA AB We study a polynomial sequence of q-extensions of the classical Hermite polynomials H-n(x), which satisfies continuous orthogonality on the whole real line R with respect to the positive weight function. This sequence can be expressed either in terms of the q-Laguerre polynomials L-n((alpha))(x; q), alpha = +/-1/2, or through the discrete q-Hermite polynomials (h) over tilde (n)(x; q) of type II. C1 Univ Sevilla, Dept Anal Matemat, E-41080 Seville, Spain. Univ Granada, Inst Carlos I Fis Teor & Computac, E-18071 Granada, Spain. UAEM, Fac Ciencias, Cuernavaca 62250, Morelos, Mexico. UNAM, Inst Matemat, Cuernavaca 62210, Morelos, Mexico. RP Alvarez-Nodarse, R, Univ Sevilla, Dept Anal Matemat, Apdo 1160, E-41080 Seville, Spain. NR 32 TC 5 PU SOCIEDAD MATEMATICA MEXICANA PI MEXICO PA APDO POSTAL 14-170, MEXICO 07000, MEXICO SN 1405-213X J9 BOL SOC MAT MEX JI BOL. SOC. MAT. MEX. PD OCT PY 2002 VL 8 IS 2 BP 127 EP 139 PG 13 SC Mathematics GA 643JK UT ISI:000180858000002 ER PT J AU Ortiz, JJ Requena, I TI Using neural networks to predict core parameters in a boiling water reactor SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID FUEL AB The problem of optimizing refueling in a nuclear boiling water reactor is difficult since it concerns combinatorial optimization and it is NP-Complete. In order to solve this problem, many techniques have been applied, ranging from expert systems to genetic algorithms. In most of these procedures, nuclear reactor simulators are used, which require a longer computation time, to evaluate the goodness of the proposed solutions. As the processes are iterative, many evaluations with the simulator are necessary, and this makes the process extremely slow. In this paper, the use of trained neural networks (NNs) is proposed as an alternative to the simulator, and the results of the NN training are shown in order to predict some variables of interest in the optimization, such as the effective multiplication factor and some thermal limits, related to safety aspects. Finally, a study about the effect of modifying several NN parameters is shown. C1 Univ Granada, Dpto Ciencias Computac & IA, E-18071 Granada, Spain. RP Requena, I, Natl Nucl Res Inst, Salazar 52045, Estado Mexico, Mexico. NR 12 TC 2 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD MAR PY 2003 VL 143 IS 3 BP 254 EP 267 PG 14 SC Nuclear Science & Technology GA 648EB UT ISI:000181135900004 ER PT J AU del Moral, LFG del Moral, MBG Molina-Cano, JL Slafer, GA TI Yield stability and development in two- and six-rowed winter barleys under Mediterranean conditions SO FIELD CROPS RESEARCH LA English DT Article DE two- and six-rowed winter barleys; yield stability; yield components; apical development; tiller production and mortality ID SPRING BARLEY; 2-ROW; 6-ROW; WHEAT; CULTIVARS; NUMBER; FERTILIZER; EFFICIENCY; DURATION; PERIOD AB Under the irregular weather that characterises Mediterranean environments, to increase yield stability in cereal crops represents an important objective for agricultural progress. In this study, a series of field experiments were conducted with two- and six-rowed barley cultivars under Mediterranean conditions (southern Spain) to determine their differences in yield stability and to identify the influence that initiation and mortality of both the spikelet and tiller could exert on yield differences. Yield stability differed markedly in two- and six-rowed cultivars. The yield of two-rowed cultivars was more responsive to environmental changes than that of the six-rowed cultivars, which consistently showed more stable behaviour, outyielding the two-rowed barleys in the lowest yielding environments. Two-rowed cultivars had far more spikes per m(2) than did six-rowed cultivars, while the latter consistently had more grains per spike, with a lower average grain weight. Yield differences among environments, for both groups of cultivars, were more associated with changes in number of grains per unit of land area than to differences in individual grain weight. Six-rowed cultivars, as expected, produced virtually threefold more spikelets per spike than the two-rowed cultivars. Although there was a large difference between two- and six-rowed cultivars in spikelet abortion, the proportion of abortion was fairly stable across environments. Two-rowed cultivars consistently tillered at a higher rate (0.11 tillers per day) than the six-rowed barleys (0.07 tillers per day), though the magnitude of the difference in tillering was more affected by the environment than was the difference in spikelet initiation. Under Mediterranean conditions the constitutive capacity of six-rowed cultivars to have a reduced tillering rate, even under favourable growing conditions, as compared with that of two-rowed cultivars could be a useful strategy to save resources that may be more efficiently used during the critical phases for yield determination. This explains their higher yield stability when compared with two-rowed cultivars. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Granada, Fac Ciencias, Dept Biol Vegetal, E-18071 Granada, Spain. Univ Almeria, Escuela Politecn Super, Dept Biol Vegetal & Ecol, Almeria 04120, Spain. Ctr UdL IRTA, Lleida 25198, Spain. Univ Buenos Aires, Fac Agron, Dept Prod Vegetal, RA-1417 Buenos Aires, DF, Argentina. Univ Buenos Aires, Fac Agron, IFEVA, RA-1417 Buenos Aires, DF, Argentina. RP del Moral, LFG, Univ Granada, Fac Ciencias, Dept Biol Vegetal, E-18071 Granada, Spain. NR 31 TC 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4290 J9 FIELD CROP RES JI Field Crop. Res. PD FEB 20 PY 2003 VL 81 IS 2-3 BP 109 EP 119 PG 11 SC Agronomy GA 648MF UT ISI:000181154600003 ER PT J AU Alcala, R Cano, JR Cordon, O Herrera, F Villar, P Zwir, I TI Linguistic modeling with hierarchical systems of weighted linguistic rules SO INTERNATIONAL JOURNAL OF APPROXIMATE REASONING LA English DT Article DE linguistic fuzzy Modeling; hierarchical fuzzy systems; weighted linguistic rules; genetic algorithms ID FUZZY-LOGIC CONTROLLERS; GENETIC ALGORITHMS; CLASSIFICATION PROBLEMS; INCONSISTENT RULES; NUMERICAL DATA; CONSTRUCTION; GRANULARITY; PARTITION; BASE AB Recently, many different possibilities to extend the Linguistic Fuzzy Modeling have been considered in the specialized literature with the aim of introducing a trade-off between accuracy and interpretability. These approaches are not isolated and can be combined among them when they have complementary characteristics, such as the hierarchical linguistic rule learning and the weighted linguistic rule learning. In this paper, we propose the hybridization of both techniques to derive Hierarchical Systems of Weighted Linguistic Rules. To do so, an evolutionary optimization process jointly performing a rule selection and the rule weight derivation has been developed. The proposal has been tested with two real-world problems achieving good results. (C) 2002 Elsevier Science Inc. All rights reserved. C1 Univ Granada, Dept Comp Sci & AI, E-18071 Granada, Spain. Univ Jaen, Dept Comp Sci, Jaen 23071, Spain. Univ Huelva, Dept Elect Engn Comp Syst & Automat, Huelva 21071, Spain. Univ Vigo, Dept Comp Sci, Orense 32004, Spain. Univ Buenos Aires, Dept Comp Sci, RA-1428 Buenos Aires, DF, Argentina. RP Cordon, O, Univ Granada, Dept Comp Sci & AI, E-18071 Granada, Spain. NR 33 TC 3 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0888-613X J9 INT J APPROX REASONING JI Int. J. Approx. Reasoning PD FEB PY 2003 VL 32 IS 2-3 BP 187 EP 215 PG 29 SC Computer Science, Artificial Intelligence GA 648WR UT ISI:000181174400008 ER PT J AU Garofalo, MG Gangitano, DA Juvenal, GJ Budowle, B Lorente, JA Padula, RA TI Six Y-chromosome STIR frequencies in a population from Argentina SO JOURNAL OF FORENSIC SCIENCES LA English DT Editorial Material DE forensic science; DNA typing; population genetics; short tandem repeats; DYS393; DYS19; DYS389; DYS390; DYS391; DYS385 ID DNA C1 Consejo Nacl Invest Cient & Tecn, CNEA, Biochem Nucl Div, RA-1033 Buenos Aires, DF, Argentina. Univ Granada, Dept Legal Med, Lab Genet Identificat, Granada, Spain. RP Garofalo, MG, Atom Energy Commiss, Radiobiol Unit, Ar del Liberator 8250, RA-1429 Buenos Aires, DF, Argentina. NR 4 TC 3 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD MAR PY 2003 VL 48 IS 2 BP 455 EP 456 PG 2 SC Medicine, Legal GA 650XU UT ISI:000181290100038 ER PT J AU Ferreira, SLC dos Santos, WNL Bezerra, MA Lemos, VA Bosque-Sendra, JM TI Use of factorial design and Doehlert matrix for multivariate optimisation of an on-line preconcentration system for lead determination by flame atomic absorption spectrometry SO ANALYTICAL AND BIOANALYTICAL CHEMISTRY DT Article DE lead determination; Doehlert matrix; on-line preconcentration; polyurethane foam; FAAS ID ONLINE PRECONCENTRATION; POLYURETHANE FOAM; EMISSION-SPECTROMETRY; SOLVENT-EXTRACTION; OPTIMIZATION; SAMPLES; CADMIUM; ZINC; FAAS AB A system for on-line preconcentration and determination of lead by flame atomic absorption spectrometry (FAAS) was proposed. It was based on the sorption of lead(II) ions on a minicolumn of polyurethane foam loaded with 2-(2-thiazolylazo)-5-dimethylaminophenol (TAM). The optimisation step was carried out using two-level full factorial and Doehlert designs for the determination of the optimum conditions for lead preconcentration. The proposed procedure allowed the determination of lead with a detection limit of 2.2 mug L-1, and a precision, calculated as relative standard deviation (RSD), of 2.4 and 6.8 for a lead concentration of 50.0 and 10.0 mug L-1, respectively. A preconcentration factor of 45 and a sampling frequency of 27 samples per hour were obtained. The recovery achieved for lead determination in the presence of several cations demonstrated that this procedure has enough selectivity for analysis of environmental samples. The validation was carried out by analysis of certified reference material. This procedure was applied to lead determination in natural food. C1 Univ Fed Bahia, Inst Quim, Grp Pesquisa Quim Analit, BR-40170290 Salvador, BA, Brazil. Univ Estadual Sudoeste Bahia, Dept Quim & Exatas, BR-45200190 Salvador, Brazil. Univ Granada, Fac Sci, Dept Analyt Chem, Granada 18071, Spain. RP Ferreira, SLC, Univ Fed Bahia, Inst Quim, Grp Pesquisa Quim Analit, Campus Univ Ondina, BR-40170290 Salvador, BA, Brazil. NR 29 TC 41 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 1618-2642 J9 ANAL BIOANAL CHEM JI Anal. Bioanal. Chem. PD FEB PY 2003 VL 375 IS 5 BP 443 EP 449 DI 10.1007/s00216-002-1695-y PG 7 SC Biochemical Research Methods; Chemistry, Analytical GA 652QM UT ISI:000181389900017 ER PT J AU Odriozola, G Schmitt, A Callejas-Fernandez, J Martinez-Garcia, R Leone, R Hidalgo-Alvarez, R TI Simulated reversible aggregation processes for different interparticle potentials: The cluster aging phenomenon SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID DIFFUSION-LIMITED AGGREGATION; MEAN-FIELD THEORY; FRAGMENTATION PROCESSES; COLLOIDAL AGGREGATION; STOCHASTIC SIMULATION; GELS; FLUCTUATIONS; COAGULATION; TRANSITION; KINETICS AB The kinetics of reversible 3D aggregation processes was studied for different interparticle potentials by means of simulations. In previous work (Phys. Rev. E 2002, 65, 031405),(1) freely diffusing particles were considered that aggregate whenever a collision occurs but disintegrate only with a single given breakup probability. The DLVO theory, however, predicts also interparticle potentials showing two minima of different depths separated by an energetic barrier. Hence, two different kind of bonds, primary and secondary ones, can be formed and should be treated separately. In the present work, this behavior was implemented by considering bonds with different breakup probabilities. The data obtained from simulations were compared with the stochastic solutions of the corresponding master equation. For this purpose, the Brownian kernel was employed together with novel fragmentation kernels. The agreement between the simulations and the kinetic description was found to be quite satisfactory. Moreover, studying the time evolution of the bond population showed that cluster aging appears as a natural consequence of the employed model. C1 Univ Granada, Dept Fis Aplicada, E-18071 Granada, Spain. Univ Republica, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. RP Odriozola, G, Univ Granada, Dept Fis Aplicada, Campus Fuentenueva, E-18071 Granada, Spain. NR 41 TC 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD MAR 13 PY 2003 VL 107 IS 10 BP 2180 EP 2188 DI 10.1021/jp0262160 PG 9 SC Chemistry, Physical GA 652UK UT ISI:000181398900003 ER PT J AU Quesada-Perez, M Gonzalez-Tovar, E Martin-Molina, A Lozada-Cassou, M Hidalgo-Alvarez, R TI Overcharging in colloids: Beyond the Poisson-Boltzmann approach SO CHEMPHYSCHEM LA English DT Review DE colloids; electric double layer; electrophoresis; overcharging; polyelectrolytes ID ELECTRICAL DOUBLE-LAYER; HYPERNETTED-CHAIN APPROXIMATION; DENSITY-FUNCTIONAL THEORY; ION-ION CORRELATIONS; POLYELECTROLYTE-MACROION COMPLEXATION; INTEGRAL-EQUATION CALCULATIONS; INHOMOGENEOUS COULOMB FLUIDS; EFFECTIVE SURFACE-CHARGE; MONTE-CARLO SIMULATIONS; PRIMITIVE MODEL AB A broad range of manufactured products and biological fluids are colloids. The ability to understand and control the processes (of scientific, technological and industrial interest) in which such colloids are involved relies upon a precise knowledge of the electrical double layer. The traditional approach to describing this ion cloud around colloidal particles has been the Gouy - Chapman model, developed on the basis of the Poisson - Boltzmann equation. Since the early 1980s, however, more sophisticated theoretical treatments have revealed both quantitative and qualitative deficiencies in the Poisson-Boltzmann theory, particularly at high ionic strengths and /or high surface charge densities. This review deals with these novel approaches, which are mostly computer simulations and approximate integral equation theories based on the so-called primitive model. Special attention is paid to phenomena that cannot be accounted for by the classic theory as a result of neglecting ion size correlations, such as overcharging, namely, the counterion concentration in the immediate neighborhood of the surface is so large that the particle surface is overcompensated. Other illustrative examples are the nonmonotonic behavior of the electrostatic potential and attractive interactions between equally charged surfaces. These predictions are certainly remarkable and, on paper, they can have an effect on experimentally measurable quantities (for instance, electrophoretic mobility). Even so, these new approaches have scarcely been applied in practice. Thus a critical survey on the relevance of ion size correlation in real systems is also included. Overcharging of macroions can also be brought about by absorption of oppositely charged polyelectrolytes. Noteworthy examples and theoretical approaches for them are also briefly reviewed. C1 Univ Granada, Fac Ciencias, Dept Fis Aplicada, Grp Fis Fluidos & Biocoloides, E-18071 Granada, Spain. Univ Jaen, Escuela Univ Politecn Linares, Dept Fis, Jaen 23700, Spain. Univ Autonoma San Luis Potosi, Inst Fis, San Luis Potosi 78000, Mexico. Inst Mexicano Petr, Programa Ingn Mol, Mexico City 07730, DF, Mexico. RP Quesada-Perez, M, Univ Granada, Fac Ciencias, Dept Fis Aplicada, Grp Fis Fluidos & Biocoloides, E-18071 Granada, Spain. EM rhidalgo@ugr.es NR 135 TC 10 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 1439-4235 J9 CHEMPHYSCHEM JI ChemPhysChem PD MAR 17 PY 2003 VL 4 IS 3 BP 235 EP 248 PG 14 SC Chemistry, Physical; Physics, Atomic, Molecular & Chemical GA 659RF UT ISI:000181790700001 ER PT J AU Alvarez-Nodarse, R Atakishiyeva, MK Atakishiyev, NM TI Mellin transforms for some families of q-polynomials SO JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS LA English DT Article DE Mellin integral transforms; q-polynomials ID GAMMA AB By using Ramanujan's q-extension of the Euler integral representation for the gamma function, we derive the Mellin integral transforms for the families of the discrete q-Hermite 11, the Al-Salam-Carlitz 11, the big q-Laguerre, the big q-Legendre, the big q-Jacobi and the q-Hahn polynomials. (C) 2002 Elsevier Science B.V. All rights reserved. C1 Univ Sevilla, Dept Anal Matemat, E-41080 Seville, Spain. Univ Granada, Inst Carlos I Fis Teor & Comp, E-18071 Granada, Spain. UAEM, Fac Ciencias, Cuernavaca 62250, Morelos, Mexico. UNAM, Inst Matemat, Cuernavaca 62210, Morelos, Mexico. RP Alvarez-Nodarse, R, Univ Sevilla, Dept Anal Matemat, Apdo 1160, E-41080 Seville, Spain. NR 18 TC 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0427 J9 J COMPUT APPL MATH JI J. Comput. Appl. Math. PD APR 1 PY 2003 VL 153 IS 1-2 BP 9 EP 18 PG 10 SC Mathematics, Applied GA 661KA UT ISI:000181888700003 ER PT J AU Arrindell, WA Eisemann, M Richter, J Oei, TPS Caballo, VE van der Ende, J Sanavio, E Bages, N Feldman, L Torres, B Sica, C Iwawaki, S Edelmann, RJ Crozier, WR Furnham, A Hudson, BL CA Cultural Clin Phychol Study Grp TI Phobic anxiety in 11 nations - Part I: Dimensional constancy of the five-factor model SO BEHAVIOUR RESEARCH AND THERAPY LA English DT Article DE fears; five-factor model; cross-cultural; factorial invariance; multiple group method; sex differences ID FEAR SURVEY SCHEDULE; SELF-REPORTED FEARS; SAMPLE; GENDER; PERSONALITY; INVARIANCE; ENGLISH; RATINGS AB The Fear Survey Schedule-III (FSS-III) was administered to a total of 5491 students in Australia, East Germany, Great Britain, Greece, Guatemala, Hungary, Italy, Japan, Spain, Sweden, and Venezuela, and submitted to the multiple group method of confirmatory analysis (MGM) in order to determine the cross-national dimensional constancy of the five-factor model of self-assessed fears originally established in Dutch, British, and Canadian samples. The model comprises fears of bodily injury-illness-death, agoraphobic fears, social fears, fears of sexual and aggressive scenes, and harmless animals fears. Close correspondence between the factors was demonstrated across national samples. In each country, the corresponding scales were internally consistent, were intercorrelated at magnitudes comparable to those yielded in the original samples, and yielded (in 93% of the total number of 55 comparisons) sex differences in line with the usual finding (higher scores for females). In each country, the relatively largest sex differences were obtained on harmless animals fears. The organization of self-assessed fears is sufficiently similar across nations to warrant the use of the same weight matrix (scoring key) for the FSS-III in the different countries and to make cross-national comparisons feasible. This opens the way to further studies that attempt to predict (on an a priori basis) cross-national variations in fear levels with dimensions of national cultures. (C) 2002 Elsevier Science Ltd. All rights reserved. C1 Univ Groningen, Heymans Inst Pharmacol, Dept Clin Psychol, NL-9712 TS Groningen, Netherlands. Umea Univ, Umea, Sweden. Univ Rostock, Rostock, Germany. Univ Queensland, Brisbane, Qld, Australia. Univ Granada, Granada, Spain. Erasmus Univ, Rotterdam, Netherlands. Univ Padua, Padua, Italy. Univ Simon Bolivar, Caracas, Venezuela. Univ Parma, I-43100 Parma, Italy. Showa Womens Univ, Tokyo, Japan. Univ Surrey, Surrey, England. Cardiff Univ, Cardiff CF1 3NS, S Glam, Wales. UCL, London, England. Univ Oxford, Oxford, England. RP Arrindell, WA, Univ Groningen, Heymans Inst Pharmacol, Dept Clin Psychol, Grote Kruissstr 2-1, NL-9712 TS Groningen, Netherlands. EM w.arrindell@ppsw.rug.nl NR 38 TC 10 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0005-7967 J9 BEHAV RES THER JI Behav. Res. Ther. PD APR PY 2003 VL 41 IS 4 BP 461 EP 479 DI 10.1016/S0005-7967(02)00047-5 PG 19 SC Psychology, Clinical GA 662LT UT ISI:000181948800006 ER PT J AU Miralles, DM Marin, C Magan, R Fernandez-Ramos, C Entrala, E Cordova, O Vargas, F Sanchez-Moreno, A TI In vitro culture and biochemical characterization of six trypanosome isolates from Peru and Brazil SO EXPERIMENTAL PARASITOLOGY LA English DT Article DE lectin agglutination; isoenzyme profile; H-1 NMR spectroscopy; Trypanosoma cruzi; Trypanosoma rangeli and strains ID ISOENZYMATIC CHARACTERIZATION; CARBOHYDRATE-METABOLISM; CRUZI STRAINS AB Six trypanosomatids isolated from different geographical areas from South America (Peru and Brazil) and different vectors and reservoir hosts (the triatomine Panstrongylus chinai [TPI], Triatoma infestans [TP2], Rhodnius ecuadorensis [TP3], R. prolixity [TB1], Didelphys inarsupialis [TB2]), and one from a human asymtomatic patient [TB3], were characterized using lectin agglutination, isoenzyme profile, in vitro culture final metabolite patterns, and compared with a reference strain (Trypanosoma cruzi, Maracay strain [TC]). The different isolates were cultured in vitro in Grace's medium supplemented with 10%, inactivated bovine foetal serum. According to our results and the statistical study, the isolate obtained from R. ecuadorensis should be designed as a Trypanosoina rangeli sp., showing all other isolates strong similarities to T. cruzi. Between them, two clusters could be identified, strongly correlating with the geographical origin. Cluster I grouped isolates from Peru and T. cruzi reference strain, and cluster II grouped the three Brazilian isolates. C1 Univ Granada, Fac Ciencias, Dept Parasitol, E-18071 Granada, Spain. Univ Nacl Trujillo, Dept Microbiol & Parasitol, Trujillo 315, Peru. RP Sanchez-Moreno, A, Univ Granada, Fac Ciencias, Dept Parasitol, C Severo Ochoa S-N, E-18071 Granada, Spain. NR 18 TC 4 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0014-4894 J9 EXP PARASITOL JI Exp. Parasitol. PD SEP PY 2002 VL 102 IS 1 BP 23 EP 29 DI 10.1016/S0014-4894(02)00141-8 PG 7 SC Parasitology GA 662NX UT ISI:000181954900003 ER PT J AU Odriozola, G Leone, R Schmitt, A Moncho-Jorda, A Hidalgo-Alvarez, R TI Coupled aggregation and sedimentation processes: The sticking probability effect SO PHYSICAL REVIEW E LA English DT Article ID CLUSTER-CLUSTER AGGREGATION; REACTION-LIMITED AGGREGATION; COLLOIDAL AGGREGATION; COMPUTER-SIMULATIONS; KINETICS; MODEL AB The influence of the sticking probability P and the drift velocity on kinetics and structure formation arising in coupled aggregation and sedimentation processes was studied by means of simulations. For this purpose, a large prism with no periodical conditions for the sedimentation direction was considered allowing for sediment formation at the prism base. The time evolution of the cluster size distribution (CSD) and weight-average cluster size (n(w)) were determined in three different regions of the prism. The cluster morphology and the sediment structure were also analyzed. We found that the coupled aggregation and sedimentation processes in the bulk are governed by P for short times, and controlled by the Peclet number Pe for long times. In the lower part of the reaction volume, where the sediment grows, the local n(w) grows at sufficiently large times analytically with an exponent of four. This behavior seems to be independent of Pe and P. The obtained results are in good agreement with the experimental data reported by C. Allain, M. Cloitre, and M. Wafra [Phys. Rev. Lett. 74, 1478 (1995)] and support the idea of a possible internal cluster rearrangement for the experiments. Finally, we discuss how the scale dependent fractal character of the sediment is related to the different stages of the aggregation process. C1 Univ Republica, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. Univ Granada, Dept Fis Aplicada, E-18071 Granada, Spain. RP Odriozola, G, Univ Republica, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. NR 27 TC 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD MAR PY 2003 VL 67 IS 3 PN Part 1 AR 031401 DI 10.1103/PhysRevE.67.031401 PG 5 SC Physics, Fluids & Plasmas; Physics, Mathematical GA 663TA UT ISI:000182020700019 ER PT J AU Sotillo, C Spizzo, R TI Anthropometric nutritional evaluation of adults from a disaster survivors community SO INTERCIENCIA LA Spanish DT Article ID WAIST CIRCUMFERENCE; OBESITY; WOMEN; TRANSITION; OVERWEIGHT; DISEASE; MASS; FAT AB In developing countries undernutrition and obesity are related with the main causes of death. This phenomenon is related to dietary changes and lifestyle. The main objective of this study was to assess the nutritional status and the prevalence of undernutrition and obesity in a group of adults from a community of survivors of a natural disaster in Caracas, Venezuela. The study included 84 adults, 31 men and 53 women between 18 and 70 years old. All subjects were classified by Body Mass Index (BMI), Upper Arm Muscular Area, and Body Fat Percent as normal, low deficit, very low deficit and obesity. The prevalence of obesity and undernutrition was higher using a combination of indexes than with the BMI alone. Men showed a higher prevalence of undernutrition than women, and women showed the highest percent of obesity. Obesity and undernutrtition were more prevalent among the group 40-49 years old, with the highest percent of obesity in women and undernutrition in men. This study shows a high degree of undernutrition and obesity in a group of adults of a low socioeconomic level. This points to the need of nutrition intervention programs to teach poor families how to improve their nutritional status through the appropriate combination of foods/nutrients and changes in their lifestyle. C1 Univ Simon Bolivar, Dept Tecnol Proc Biol & Bioquim, Caracas 1080A, Venezuela. Cent Univ Venezuela, Caracas, Venezuela. Univ Granada, E-18071 Granada, Spain. RP Sotillo, C, Univ Simon Bolivar, Dept Tecnol Proc Biol & Bioquim, Edificio Quim & Proc,Piso 1,Apartado 89000, Caracas 1080A, Venezuela. NR 27 TC 0 PU INTERCIENCIA PI CARACAS PA APARTADO 51842, CARACAS 1050A, VENEZUELA SN 0378-1844 J9 INTERCIENCIA JI Interciencia PD FEB PY 2003 VL 28 IS 2 BP 95 EP 99 PG 5 SC Multidisciplinary Sciences GA 665VQ UT ISI:000182142300006 ER PT J AU Navarro, MC Montilla, MP Cabo, MM Galisteo, M Caceres, A Morales, C Berger, I TI Antibacterial, antiprotozoal and antioxidant activity of five plants used in Izabal for infectious diseases SO PHYTOTHERAPY RESEARCH LA English DT Article DE medicinal plants; antibacterial; antiprotozoal; antioxidant; free radical scavenger; lipid peroxidation ID PROTOZOAL INFECTIONS; TRYPANOSOMA-CRUZI; IN-VITRO; FLAVONOIDS; GUATEMALA; INHIBITION; SUPEROXIDE; EXTRACTS; BACTERIA; GROWTH AB Methanol and aqueous extracts from five plant species, used in traditional medicine in Guatemala for the treatment of microbial infections, were tested in vitro for their ability to scavenge DPPH, OH. and O-2(-) radicals and to inhibit lipoperoxidation (LPO) in order to establish a relationship between their antioxidant activities and their effects against infectious agents. Acalypha guatemalensis, Ocimum micranthum and Smilax spinosa possessed a significant activity against both the three free radicals assayed and LPO; Guazuma ulmifolia showed effects against DPPH and OH.. Piper auritum showed no activity. These extracts were also evaluated for antibacterial and antiprotozoal activities. A. guatemalensis showed activity against Pseudomonas aeruginosa; S. spinosa was active against Salmonella typhi, and A. guatemalensis, and S. spinosa against Trypanosoma cruzi or Leishmania spp. Copyright (C) 2003 John Wiley Sons, Ltd. C1 Univ Granada, Fac Pharm, Dept Pharmacol, E-18071 Granada, Spain. Univ San Carlos, Fac Chem Sci & Pharm, USAC, Guatemala City, Guatemala. Univ Vienna, Inst Pharmacognosy, A-1010 Vienna, Austria. RP Navarro, MC, Univ Granada, Fac Pharm, Dept Pharmacol, Campus de Cartuja, E-18071 Granada, Spain. NR 29 TC 5 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND SN 0951-418X J9 PHYTOTHER RES JI Phytother. Res. PD APR PY 2003 VL 17 IS 4 BP 325 EP 329 DI 10.1002/ptr.1134 PG 5 SC Chemistry, Medicinal; Pharmacology & Pharmacy GA 675LZ UT ISI:000182697800006 ER PT J AU Corsi-Cabrera, M Miro, E del-Rio-Portilla, Y Perez-Garci, E Villanueva, Y Guevara, MA TI Rapid eye movement sleep dreaming is characterized by uncoupled EEG activity between frontal and perceptual cortical regions SO BRAIN AND COGNITION LA English DT Article DE EEG coherence; EEG correlation; spectral analysis; dreaming; REM sleep; frontal lobe ID HUMAN REM-SLEEP; VISUAL-CORTEX; OSCILLATIONS; ACTIVATION; WAKEFULNESS; COHERENCE; ELECTROENCEPHALOGRAM; SYNCHRONIZATION; MENTATION; AROUSAL AB EEG coherent activity is involved in the binding of spatially separated but temporally correlated stimuli into whole events. Cognitive features of rapid eye movement sleep (REM) dreaming resemble frontal lobe dysfunction. Therefore, temporal coupling of EEG activity between frontal and perceptual regions was analyzed from 10 min prior to dream reports (8 adults) from stage-2 and REM sleep. EEG correlation between frontal and perceptual regions decreased and, among perceptual regions increased during REM. The temporal dissociation of EEG activity between executive and perceptual regions supplies an inadequate mechanism for the binding and interpretation of ongoing perceptual activity resulting in dream bizarreness. (C) 2003 Elsevier Science (USA). All rights reserved. C1 Univ Nacl Autonoma Mexico, Fac Psicol, Mexico City 04510, DF, Mexico. Univ Granada, Fac Psicol, Granada, Spain. Univ Guadalajara, Inst Neurociencias, Guadalajara 44430, Jalisco, Mexico. RP Corsi-Cabrera, M, Univ Nacl Autonoma Mexico, Fac Psicol, Av Univ 3004, Mexico City 04510, DF, Mexico. NR 68 TC 6 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0278-2626 J9 BRAIN COGNITION JI Brain Cogn. PD APR PY 2003 VL 51 IS 3 BP 337 EP 345 DI 10.1016/S0278-2626(03)00037-X PG 9 SC Neurosciences; Psychology, Experimental GA 677CM UT ISI:000182789400010 ER PT J AU Soler-Diaz, A Gutierrez-Jurado, C Sanchez-Morito, N Ruiz-Contreras, A Gonzalez-Martinez, MT TI Kinetic analysis of a Na/Mg exchange present in rat thymocytes SO BIOPHYSICAL JOURNAL LA English DT Meeting Abstract C1 Univ Granada, Fac Med, E-18012 Granada, Spain. Univ Nacl Autonoma Mexico, Fac Med, Mexico City 04510, DF, Mexico. NR 0 TC 0 PU BIOPHYSICAL SOCIETY PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 USA SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD FEB PY 2003 VL 84 IS 2 PN Part 2 Suppl. S BP 518A EP 518A PG 1 SC Biophysics GA 682ZW UT ISI:000183123802547 ER PT J AU Zambrano, M Nikitakis, NG Sanchez-Quevedo, MC Sauk, JJ Sedano, H Rivera, H TI Oral and dental manifestations of vitamin D-dependent rickets type I: Report of a pediatric case SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS LA English DT Article ID D-RESISTANT RICKETS; D DEFICIENCY; 1-ALPHA-HYDROXYLASE; DISORDERS; GENETICS; TEETH AB Vitamin D-dependent rickets type I (VDDRI) represents an autosomal recessive hereditary defect in vitamin D metabolism. Patients with VDDRI have mutations of chromosome 12 that affect the gene for the enzyme 1-alpha-hydroxylase, resulting in decreased levels of 1,25(OH)2 vitamin D. Clinical features include growth failure, hypotonia, weakness, rachitic rosary, convulsions, tetany, open fontanels, and pathologic fractures. The oral and dental manifestations of VDDRI have not been described. Here we present the case of a 10-year-old girl affected by VDDRI, as established by the combination of clinical and radiographic findings, family history, and laboratory values. Dental examination revealed markedly hypoplastic, yellowish-to-brownish enamel in all permanent teeth, malocclusion, and chronic periodontal disease. Large quadrangular pulp chambers and short roots were evident in dental radiographs. Light microscopic and ultrastructural examination showed abnormalities of dental hard tissues, affecting both enamel and dentin. The differential diagnosis and treatment of VDDRI are discussed. C1 Univ Maryland, Sch Dent, Dept Diagnost Sci & Pathol, Baltimore, MD 21201 USA. Cent Univ Venezuela, Fac Dent, Caracas, Venezuela. Univ Granada, Fac Med & Dent, Granada, Spain. Univ Calif Los Angeles, Sch Dent, Los Angeles, CA 90024 USA. RP Nikitakis, NG, Univ Maryland, Sch Dent, Dept Diagnost Sci & Pathol, Room 4-C-02,666 W Baltimore St, Baltimore, MD 21201 USA. NR 19 TC 1 PU MOSBY, INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 USA SN 1079-2104 J9 ORAL SURG ORAL MED ORAL PATHO JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD JUN PY 2003 VL 95 IS 6 BP 705 EP 709 DI 10.1067/moe.2003.116 PG 5 SC Dentistry, Oral Surgery & Medicine GA 687GA UT ISI:000183367000017 ER PT J AU Arrindell, WA Eisemann, M Richter, J Oei, TPS Caballo, VE van der Ende, J Sanavio, E Bages, N Feldman, L Torres, B Sica, C Iwawaki, S Hatzichristou, C CA Cultural Clinical Psychology Study TI Masculinity-femininity as a national characteristic and its relationship with national agoraphobic fear levels: Fodor's sex role hypothesis revitalized SO BEHAVIOUR RESEARCH AND THERAPY LA English DT Article DE sex roles; Agoraphobia; cross-cultural assessment; national masculinity-femininity; Hofstede; Fodor ID SELF-REPORTED FEARS; SURVEY SCHEDULE; CULTURAL-DIFFERENCES; PERSONALITY; DIMENSIONS; POPULATION; SAMPLE; GENDER; POWER AB Hofstede's dimension of national culture termed Masculinity-Femininity [Hofstede (1991). Cultures and organizations: software of the mind. London: McGraw-Hill] is proposed to be of relevance for understanding national-level differences in self-assessed agoraphobic fears. This prediction is based on the classical work of Fodor [Fodor (1974). In: V. Franks & V. Burtle (Eds.), Women in therapy: new psychotherapies for a changing society. New York: Brunner/Mazel]. A unique data set comprising 11 countries (total N = 5491 students) provided the opportunity of scrutinizing this issue. It was hypothesized and found that national Masculinity (the degree to which cultures delineate sex roles, with masculine or tough societies making clearer differentiations between the sexes than feminine or modest societies do) would correlate positively with national agoraphobic fear levels (as assessed with the Fear Survey Schedule-III). Following the correction for sex and age differences across national samples, a significant and large effect-sized national-level (ecological) r = +0.67 (P = 0.01) was found. A highly feminine society such as Sweden had the lowest, whereas the champion among the masculine societies, Japan, had the highest national Agoraphobic fear score. (C) 2003 Elsevier Science Ltd. All rights reserved. C1 Univ Groningen, Dept Clin Psychol, Heymans Inst, NL-9712 TS Groningen, Netherlands. Umea Univ, Umea, Sweden. Univ Rostock, D-2500 Rostock, Germany. Univ Queensland, Brisbane, Qld, Australia. Univ Granada, Granada, Spain. Erasmus Univ, Rotterdam, Netherlands. Univ Padua, Padua, Italy. Univ Simon Bolivar, Caracas, Venezuela. Univ Pais Vasco, E-20080 San Sebastian, Spain. Showa Womens Univ, Tokyo, Japan. Univ Athens, Athens, Greece. RP Arrindell, WA, Univ Groningen, Dept Clin Psychol, Heymans Inst, Grote Kruisstr 2-1, NL-9712 TS Groningen, Netherlands. NR 57 TC 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0005-7967 J9 BEHAV RES THER JI Behav. Res. Ther. PD JUL PY 2003 VL 41 IS 7 BP 795 EP 807 DI 10.1016/S0005-7967(02)00188-2 PG 13 SC Psychology, Clinical GA 693HC UT ISI:000183710200004 ER PT J AU Valdes, H Sanchez-Polo, M Zaror, CA TI Effect of ozonation on the activated carbon surface chemical properties and on 2-mercaptobenzothiazole adsorption SO LATIN AMERICAN APPLIED RESEARCH LA English DT Article DE 2-mercaptobenzothiazole; ozone; activated carbon; surface properties; adsorption ID WATER TREATMENT PLANTS; OZONE; CHEMISTRY; SITES; OXIDATION; EFFLUENTS; NITROGEN; OXIDANT; REMOVAL AB Benzothiazoles are organic compounds that may produce negative environmental impact when released into watercourses. In particular, 2-mercaptobenzothiazole (MBT) are known to be toxic and hard to biodegrade. Activated, carbon adsorption and ozonation have been identified as suitable treatment for those contaminants. However, there is some controversy about the effect of carbon surface chemical composition on the MBT adsorption. This paper focuses. on this issue and presents experimental adsorption isotherms for MBT on Filtrasorb-400 activated carbon treated with different ozone doses. The activated carbon surface chemical properties were assessed by acid/basic neutralization, temperature programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS), and the point of zero charge (pH(PZC)). Results show that ozone treatment modified the oxygenated groups on the activated carbon surface, increasing the concentration of acid groups, and reducing the pH(PZC). Finally, ozone treatment led to a significant reduction of the carbon's MBT adsorption capacity, due to the increase in polar hydrophilic groups. C1 Concepcion Univ, Dept Ingn Quim, Concepcion, Chile. Univ Granada, Dept Quim Inorgan, E-18071 Granada, Spain. RP Valdes, H, Concepcion Univ, Dept Ingn Quim, Casilla 160 C,Correo 3, Concepcion, Chile. NR 29 TC 1 PU PLAPIQUI(UNS-CONICET) PI BAHIA BLANCA PA CAMINO LA CARRINDANGA, KM 7, C C 717, 8000 BAHIA BLANCA, ARGENTINA SN 0327-0793 J9 LATIN AM APPL RES JI Latin Am. Appl. Res. PD JUL PY 2003 VL 33 IS 3 BP 219 EP 223 PG 5 SC Engineering, Chemical GA 693LJ UT ISI:000183718800004 ER PT J AU Escutia, C Warnke, D Acton, GD Barcena, A Burckle, L Canals, M Frazee, CS TI Sediment distribution and sedimentary processes across the Antarctic Wilkes Land margin during the Quaternary SO DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY LA English DT Article ID CONTINENTAL-SHELF; SOUTHERN-OCEAN; DIATOM BIOSTRATIGRAPHY; ATLANTIC SECTOR; MARINE-SEDIMENTS; GEORGE-V; RECORD; ICE AB The study of existing cores collected across the Wilkes Land margin provides us with a better understanding of the sediment distribution and processes across this margin during the Holocene, and during Pleistocene glacial and interglacial cycles. Holocene depositional rates are high in deep ( > 1000 m) inner-shelf basins where diatomaceous ooze is deposited at estimated minimum sedimentation rates ranging from 40 to 60 cm/kyr. In the shelf troughs, Holocene sediment has a patchy distribution or is totally absent. This is also the case on the shelf banks due to differential deposition because of the irregular relief of the continental shelf and the erosion and redistribution by bottom currents. Pleistocene interglacial sedimentation is well represented in sediment from the continental rise and is dominated by hemipelagic deposition of massive mud with the highest biogenic content (as indicated by %opal) and with a high abundance of clasts (IRD). During the Pleistocene glacial cycles, diamictons were deposited in the continental-shelf troughs and on the banks. Reworking (e.g., by bottom currents) and remobilization (e.g., gravity flows) of these diamictons is a common process along the shallow continental-shelf banks. On the continental slope and the continental rise, gravity flows are one of the most important sedimentary processes. Sediment from continental-slope cores, with a texture that greatly resembles the diamictons on the shelf, is interpreted to represent either part of a slump block or the start of a debris flow. Downslope, crudely stratified to laminated intervals represent the transition between an end member of a debris flow and a turbidity flow. Some of the laminated intervals in cores from the continental rise represent sediment deposited from a turbidity flow. Ages obtained from cores further support that slumps and gravity flows are dominant processes in this margin, because numerous hiatuses apparently are present in cores from the base of the slope. One of these cores extends into the Miocene. Elsewhere on the continental rise, massive and laminated sediments in cores of similar length record near-continuous Pleistocene sedimentation. (C) 2003 Elsevier Science Ltd. All rights reserved. C1 Univ Granada, Fac Ciencias, Inst Andaluz Ciencias Tierra, CSIC, Granada 18002, Spain. Univ Barcelona, E-08028 Barcelona, Spain. Lamont Doherty Earth Observ, Palisades, NY 10964 USA. Univ Salamanca, Fac Ciencias, Salamanca 37008, Mexico. Texas A&M Univ, Ocean Drilling Program, College Stn, TX 77845 USA. Calif State Univ Hayward, Hayward, CA 94542 USA. RP Escutia, C, Univ Granada, Fac Ciencias, Inst Andaluz Ciencias Tierra, CSIC, Campus Fuentenueva S-N, Granada 18002, Spain. NR 65 TC 10 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0967-0645 J9 DEEP-SEA RES PT II-TOP ST OCE JI Deep-Sea Res. Part II-Top. Stud. Oceanogr. PY 2003 VL 50 IS 8-9 BP 1481 EP 1508 DI 10.1016/S0967-0645(03)00073-0 PG 28 SC Oceanography GA 696CG UT ISI:000183867600010 ER PT J AU Osorio, R Toledano, M de Leonardi, G Tay, F TI Microleakage and interfacial morphology of self-etching adhesives in Class V resin composite restorations SO JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS LA English DT Article DE adhesion; microleakage; enamel; dentin; self-etching primers ID SHEAR BOND STRENGTH; IN-VIVO; DENTIN PRIMER; ENAMEL; SYSTEMS; DURABILITY; SEM; NANOLEAKAGE; VARIABILITY; AGENTS AB The purpose of the study was to evaluate the marginal leakage of three adhesive systems in Class V resin composite restorations. Two adhesive systems containing acidic primers: Clearfil SE Bond (CSEB) and Etch & Prime 3.0 (E&P), were compared with a conventional water-based primer: Scotchbond Multipurpose Plus (SBMP). Class V cavities were made at the cementum-enamel junction of extracted human molars, which were then divided between three groups. One of the adhesive systems was applied to each group following manufacturers' instructions. Composite restorations were placed, light cured for 40 s, and polished. Specimens were then immersed in a solution of 2% basic fuchsin dye for 24 h. Longitudinal sections were obtained and studied with a stereomicroscope for assessment of the microleakage according to the degree of dye penetration (scale of 0-3). Data were analyzed by Kruskal-Wallis one-way ANOVA, Mann-Whitney tests, and the Wilcoxon matched-pairs signed rank test. Two specimens for each group were analyzed by scanning-electron microscopy (SEM). Bonded interfaces of dentin were also examined by transmission-electron microscopy (TEM). On enamel, there were no significant differences between the three groups. On dentin, CSEB showed the lowest dye penetration values among the three adhesive systems. SEM and TEM studies showed hybrid layer and resin tag formations in all groups. (C) 2003 Wiley Periodicals, Inc. C1 Univ Hong Kong, Fac Dent, Dept Conservat Dent, Hong Kong, Hong Kong, Peoples R China. Natl Univ Cordoba, Dept Prosthet Dent, Cordoba, Argentina. Univ Granada, Sch Dent, Dept Dent Mat, Granada, Spain. RP Toledano, M, Avda sFuerzas Armadas 1,1B, Granada 18014, Spain. NR 52 TC 24 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158-0012 USA SN 0021-9304 J9 J BIOMED MATER RES PART B JI J. Biomed. Mater. Res. Part B PD JUL 15 PY 2003 VL 66B IS 1 BP 399 EP 409 DI 10.1002/jbm.b.10024 PG 11 SC Engineering, Biomedical; Materials Science, Biomaterials GA 697CB UT ISI:000183923700015 ER PT J AU Prieto, L Montesino, M Salas, A Alonso, A Albarran, C Alvarez, S Crespillo, M Di Lonardo, AM Doutremepuich, C Fernandez-Fernandez, I de la Vega, AG Gusmao, L Lopez, CM Lopez-Soto, M Lorente, JA Malaghini, M Martinez, CA Modesti, NM Palacio, AM Paredes, M Pena, SDJ Perez-Lezaun, A Pestano, JJ Puente, J Sala, A Vide, MC Whittle, MR Yunis, JJ Gomez, J TI The 2000-2001 GEP-ISFG Collaborative Exercise on mtDNA: assessing the cause of unsuccessful mtDNA PCR amplification of hair shaft samples SO FORENSIC SCIENCE INTERNATIONAL DT Article DE mitochondrial DNA (mtDNA) polymorphism; standardization; collaborative exercise; heteroplasmy; hair shafts; annual identification; cytochrome b; 12S; 16S ID PROFICIENCY TESTING PROGRAM; MITOCHONDRIAL-DNA; WORKING GROUP; SPANISH; EVOLUTION AB We report the results of Spanish and Portuguese working group (GEP) of International Society of Forensic Genetics (ISFG) Collaborative Exercise 2001-2002 on mitochondrial DNA (mtDNA) analysis. 64 laboratories from Spain, Portugal and several Latin-American countries participated in this quality control exercise. Five samples were sent to the participating laboratories, four blood stains (M1-M4) and a sample (M5) consisting of two hair shaft fragments. M4 was non-human (Felis catus) in origin; therefore. the capacity of the labs to identify the biological source of this sample was an integral part of the exercise. Some labs detected the non-human origin of M4 by carrying out immuno-diffussion techniques using antihuman serum, whereas others identified the specific animal origin by testing the sample against a set of animal antibodies or by means of the analysis of mtDNA regions (Cyt-b, 12S, and 16S genes). The results of the other three human blood stains (M1-M3) improved in relation to the last Collaborative Exercises but those related to hairs yielded a low rate of success which clearly contrasts with previous results. As a consequence of this, some labs performed additional analysis showing that the origin of this low efficiency was not the presence of inhibitors, but the low quantity of DNA present in these specific hair samples and the degradation. As a general conclusion the results emphasize the need of external proficiency testing as part of the accreditation procedure for the labs performing mtDNA analysis in forensic casework. (C) 2003 Elsevier Science Ireland Ltd. All rights reserved. C1 Comisaria Gen Policia Cient, Secc Biol ADN, Madrid, Spain. Univ Santiago Compostela, Inst Med Legale, Fac Med, Coruna, Spain. Inst Toxicol, Dept Madrid, Secc Biol, Madrid, Spain. Univ Complutense Madrid, Fac Med, Madrid, Spain. Inst Toxicol, Dept Barcelona, Secc Biol, Barcelona, Spain. Hosp Dr C G Durand, Banco Nacl Datos Gen, Buenos Aires, DF, Argentina. Hematol Lab, Bordeaux, France. DataGene, Bizkaia, Spain. ADF TecnoGen SL, Madrid, Spain. Univ Porto, Inst Patol & Immunol, Oporto, Portugal. Direcc Gen Guardia Civil, Lab ADN, Madrid, Spain. Inst Toxicol, Dept Sevilla, Secc Biol, Seville, Spain. Univ Granada, Dept Legal Med, Lab Identificac Genet, Granada, Spain. Inst Criminalist, Lab Genet Mol Forense Curitiva, Parana, Brazil. Lab Anal Clin Frischmann, Curitiba, Parana, Brazil. CEPROCOR, Cordoba, Argentina. Cent Anal Genet, Zaragoza, Spain. Inst Nacl Med Legal & Ciencias Forenses, Lab DNA, Santafe Bogota, Colombia. GENE, Nucleo Genet Medica, Belo Horizonte, MG, Brazil. Univ Pompeu Fabra, Unitat Biol Evolutiva, Barcelona, Spain. Inst Anat Forense, Fac Med, Genet Lab, Las Palmas Gran Canaria, Spain. Dept Biol Mol Pharma Gen SA, Madrid, Spain. Univ Buenos Aires, Fac Farm & Bioquim, Serv Huellas Digitales Genet, Buenos Aires, DF, Argentina. Inst Med Legale, Serv Biol Forense, Coimbra, Portugal. Genom Engn Mol LTDA, Sao Paulo, Brazil. Serv Med Yunis Turbay & Cia, Santafe De Bogota, DC, Colombia. Inst Toxicol, Unidad Garantia Calidad, Madrid, Spain. RP Prieto, L, Comisaria Gen Policia Cient, Secc Biol ADN, Madrid, Spain. NR 11 TC 9 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0379-0738 J9 FORENSIC SCI INT JI Forensic Sci.Int. PD JUN 24 PY 2003 VL 134 IS 1 BP 46 EP 53 DI 10.1016/S0379-0738(03)0095-1 PG 8 SC Medicine, Legal GA 701ZW UT ISI:000184200400008 ER PT J AU Mota, AJ Castellanos, E Juaristi, E TI Simple methodology for the purification of amino acids SO ORGANIC PREPARATIONS AND PROCEDURES INTERNATIONAL LA English DT Article ID ENANTIOSELECTIVE SYNTHESIS; BETA-PEPTIDES C1 Univ Granada, Fac Farm, Dept Quim Organ, E-18071 Granada, Spain. Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Dept Quim, Mexico City 07000, DF, Mexico. RP Mota, AJ, Univ Granada, Fac Farm, Dept Quim Organ, Campus Cartuja, E-18071 Granada, Spain. NR 17 TC 5 PU ORGANIC PREP PROCEDURES INC PI NEWTON HIGHLANDS PA PO BOX 9, NEWTON HIGHLANDS, MA 02161 USA SN 0030-4948 J9 ORG PREP PROCEDURE INT JI Org. Prep. Proced. Int. PD AUG PY 2003 VL 35 IS 4 BP 414 EP 417 PG 4 SC Chemistry, Organic GA 703NU UT ISI:000184287100011 ER PT J AU Milone, DH Rubio, AJ TI Prosodic and accentual information for automatic speech recognition SO IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING LA English DT Article DE accentuation; continuous speech recognition; language models; prosody ID CLASSIFICATION; INTONATION; ENGLISH AB Various aspects relating to the human production and perception of speech have gradually been incorporated into automatic speech recognition systems. Nevertheless, the set of speech prosodic features has not yet been used in an explicit way in the recognition process itself. This study presents an analysis of prosody's three most important parameters, namely energy, fundamental frequency and duration, together with a method for incorporating this information into automatic speech recognition. On the basis of a preliminary analysis, a design is proposed for a prosodic feature classifier in which these parameters are associated with orthographic accentuation. Prosodic-accentual features are incorporated in a hidden Markov model recognizer; their theoretical formulation and experimental setup are then presented. Several experiments were conducted to show how the method performs with a Spanish continuous-speech database. Using this approach to process other database subsets, we obtained a word recognition error reduction rate of 28.91%. C1 UNER, Fac Engn, RA-3101 Oro Verde, Argentina. UNL, Fac Engn & Hydr Sci, Cybernet Lab, RA-3101 Oro Verde, Argentina. UGR, Dept Elect & Tecnol Comp, Granada, Spain. RP Milone, DH, UNER, Fac Engn, RA-3101 Oro Verde, Argentina. NR 68 TC 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 1063-6676 J9 IEEE TRANS SPEECH AUDIO PROC JI IEEE Trans. Speech Audio Process. PD JUL PY 2003 VL 11 IS 4 BP 321 EP 333 DI 10.1109/TSA.2003.814368 PG 13 SC Acoustics; Engineering, Electrical & Electronic GA 705AY UT ISI:000184375100003 ER PT J AU Moncho-Jorda, A Odriozola, G Tirado-Miranda, M Schmitt, A Hidalgo-Alvarez, R TI Modeling the aggregation of partially covered particles: Theory and simulation SO PHYSICAL REVIEW E LA English DT Article ID COLLISION EFFICIENCY FACTORS; BOVINE SERUM-ALBUMIN; POLYSTYRENE LATEX; POLYMER FLOCCULATION; COLLOIDAL CLUSTERS; ADSORPTION; STABILITY; TRANSITION; RLCA; DLCA AB A theoretical model for describing the initial stages of the aggregation of partially covered colloidal particles is presented. It is based on the assumption of short-range interactions that may be modeled by a sticking probability on contact. Three types of sticking probabilities are distinguished depending on the collision type, i.e., for bare-bare, bare-covered, and covered-covered collisions. Hence, the model allows an analytical expression for the dimer-formation rate constant k(11), to be deduced as a function of the degree of surface coverage and the three sticking probabilities. The theoretical predictions are contrasted with simulated data. The observed agreement between theory and simulations shows the usefulness of the model for predicting the initial stages of this kind of aggregation processes. C1 Univ Granada, Dept Fis Aplicada, E-18071 Granada, Spain. Inst Mexicano Petr, Programa Ingn Mol, Mexico City 07730, DF, Mexico. Univ Extremadura, Dept Fis, Escuela Politecn, Caceres, Spain. RP Moncho-Jorda, A, Univ Granada, Dept Fis Aplicada, Campus Fuentenueva, E-18071 Granada, Spain. NR 31 TC 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD JUL PY 2003 VL 68 IS 1 PN Part 1 AR 011404 DI 10.1103/PhysRevE.68.011404 PG 12 SC Physics, Fluids & Plasmas; Physics, Mathematical GA 708RJ UT ISI:000184582400024 ER PT J AU Duarte, OG Delgado, M Requena, I TI Algorithms to extend crisp functions and their inverse functions to fuzzy numbers SO INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS LA English DT Article AB In this article we present an algorithm to extend continuous crisp functions to fuzzy numbers using the extension principle; the functions must be monotonically increasing in some of the arguments and monotonically decreasing in the others. Then, we present two different solutions to the problem of extending inverse functions that we have called possible extension and necessary extension. Finally, using these solutions we have generated a family of intermediate extensions that let us define a parameter to measure the existence of the extended inverse functions. (C) 2003 Wiley Periodicals, Inc. C1 Univ Nacl Colombia, Dept Elect Engn, Bogota, Colombia. Univ Granada, Dept Comp Sci, E-18071 Granada, Spain. Univ Granada, AI ETTSI Informat, E-18071 Granada, Spain. RP Duarte, OG, Univ Nacl Colombia, Dept Elect Engn, Bogota, Colombia. NR 21 TC 2 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0884-8173 J9 INT J INTELL SYST JI Int. J. Intell. Syst. PD AUG PY 2003 VL 18 IS 8 BP 855 EP 876 DI 10.1002/int.10121 PG 22 SC Computer Science, Artificial Intelligence GA 709MN UT ISI:000184629100001 ER PT J AU Tejera, NA Ortega, E Gonzalez-Lopez, J Lluch, C TI Effect of some abiotic factors on the biological activity of Gluconacetobacter diazotrophicus SO JOURNAL OF APPLIED MICROBIOLOGY LA English DT Article DE Gluconacetobacter diazotrophicus; abiotic factors; carbon metabolism; endophyte; enzymes; nitrogen fixation ID ACETOBACTER-DIAZOTROPHICUS; SUGAR-CANE; IDENTIFICATION; FIXATION; PLANTS; ROOT AB Aims: The effect of some abiotic factors, dryness, heat and salinity on the growth and biological activity of Gluconacetobacter diazotrophicus , and the influence of a salt stress on some enzymes involved in carbon metabolism of these bacteria is studied under laboratory conditions. Methods and Results: Strain PAL-5 of G. diazotrophicus was incubated under different conditions of drying, heat and salinity. Cells showed tolerance to heat treatments and salt concentrations, and sensitivity to drying conditions. Higher NaCl dosage of 150 and 200 mmol l (-1) limited its growth and drastically affected the nitrogenase activity and the enzymes glucose dehydrogenase, alcohol dehydrogenase, fumarase, isocitrate dehydrogenase and malate dehydrogenase. Conclusions: Gluconacetobacter diazotrophicus , despite its endophytic nature, tolerated heat treatments and salinity stress, but its nitrogenase activity and carbon metabolism enzymes were affected by high NaCl dosage. Significance and Impact of the Study: The investigation of the biological activity of G. diazotrophicus in response to different abiotic factors led to more knowledge of this endophyte and may help to clarify pathways involved in its transmission into the host plant. C1 Univ Granada, Fac Ciencias, Dept Fisiol Vegetal, E-18071 Granada, Spain. Univ La Habana, Dept Biol Vegetal, Havana, Cuba. Univ Granada, Inst Agua, Granada, Spain. RP Tejera, NA, Univ Granada, Fac Ciencias, Dept Fisiol Vegetal, Campus Fuentenueva S-N, E-18071 Granada, Spain. NR 30 TC 2 PU BLACKWELL PUBLISHING LTD PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND SN 1364-5072 J9 J APPL MICROBIOL JI J. Appl. Microbiol. PY 2003 VL 95 IS 3 BP 528 EP 535 DI 10.1046/j.1365-2672.2003.02007.x PG 8 SC Biotechnology & Applied Microbiology; Microbiology GA 711CG UT ISI:000184720600014 ER PT J AU Cordon, O Herrera, F Zwir, I TI A hierarchical knowledge-based environment for linguistic modeling: models and iterative methodology SO FUZZY SETS AND SYSTEMS LA English DT Article DE linguistic modeling; fuzzy rule-based systems; hierarchical linguistic partitions; hierarchical knowledge base; rule selection; genetic algorithms ID GENERATING FUZZY RULES; CLASSIFICATION PROBLEMS; GENETIC ALGORITHMS; SYSTEMS; LOGIC AB Although linguistic models are highly descriptive, they suffer from inaccuracy in some, complex problems. This fact is due to problems related to the inflexibility of the linguistic rule structure that has been considered. Moreover, methods often employed to design these models from data are also biased by the former structure and by their nature, which is close to prototype identification algorithms. In order to deal with these problems of linguistic modeling, an extension of the knowledge base of linguistic fuzzy rule-based systems was previously introduced, i.e., the hierarchical knowledge base (HKB) (IEEE Trans. Fuzzy Systems 10 (1) (2002) 2). Hierarchical linguistic fuzzy models, derived from this structure, are viewed as a class of local modeling approaches. They attempt to solve a complex modeling problem by decomposing it into a number of simpler linguistically interpretable subproblems. From this perspective, linguistic modeling using an HKB can be regarded as a search for a decomposition of a non-linear system that gives a desired balance between the interpretability and the accuracy of the model. Using this approach, we are able to effectively explore the fact that the complexity of the systems is usually not uniform. We propose a well-defined hierarchical environment adopting a more general treatment than the typical prototype-oriented leaming methods. This iterative hierarchical methodology takes the HKB as a base and performs a wide variety of linguistic modeling. More specifically, from fully interpretable to fully accurate, as well as intermediate trade-offs, hierarchical linguistic models. With the aim of analyzing the behavior of the proposed methodology, two real-world electrical engineering distribution problems from Spain have been selected. Successful results were obtained in comparison with other system modeling techniques. (C) 2002 Elsevier B.V. All rights reserved. C1 Univ Granada, ETS Ingn Informat, Dept Comp Sci & Artificial Intelligence, E-18071 Granada, Spain. Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Comp Sci, RA-1428 Buenos Aires, DF, Argentina. RP Herrera, F, Univ Granada, ETS Ingn Informat, Dept Comp Sci & Artificial Intelligence, E-18071 Granada, Spain. NR 39 TC 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0114 J9 FUZZY SET SYSTEM JI Fuzzy Sets Syst. PD SEP 1 PY 2003 VL 138 IS 2 BP 307 EP 341 PG 35 SC Computer Science, Theory & Methods; Mathematics, Applied; Statistics & Probability GA 711GM UT ISI:000184731300006 ER PT J AU Villasenor, AB Oloriz, F Gonzalez-Arreola, C TI First record of the genus Simocosmoceras Spath, 1925, Ammonitina, in Mexico. Biostratigraphic and palaeobiogeographic interpretation SO GFF LA English DT Article DE ammonites; Simocosmoceras; paleobiogeography; lower Tithonian; Upper Jurassic; Mexico AB The occurrence of Simocosmoceras in Mexico is first reported from the Mazatepec area (Puebla) in East-central Mexico. Simocosmoceras pszczolkowskii apulcoensis n. subsp. shows closest morphological, resemblance with Simocosmoceras pszczolkowskii Myczynski registered in western Cuba (Myczynski 1989). Ecological adaptation to comparatively epeiric seas in eastern Mexico is interpreted to cause phenotypic deviation with respect to Simocosmoceras pszczolkowskii Myczynski reported from western Cuba. The lack of transient phenotypes between Mexican and Cuban Simocosmoceras is assumed to support the interpretation of Simocosmoceras pszczolkowskii apulcoensis n. subsp. as a geographic subspecies. The new subspecies is interpreted to indicate stratigraphic horizons within the Semiforme/Verruciferm Zone in the Mediterranean Tethys. C1 Univ Nacl Autonoma Mexico, Inst Geol, Dept Palaeontol, Mexico City 04510, DF, Mexico. Univ Granada, Fac Ciencias, Dept Estratigrafia & Paleontol, E-18071 Granada, Spain. RP Villasenor, AB, Univ Nacl Autonoma Mexico, Inst Geol, Dept Palaeontol, Mexico City 04510, DF, Mexico. NR 44 TC 2 PU SWEDISH SCIENCE PRESS PI UPPSALA PA BOX 118, S751 04 UPPSALA, SWEDEN SN 1103-5897 J9 GFF JI GFF PD JUN PY 2003 VL 125 PN Part 2 BP 49 EP 56 PG 8 SC Geology; Paleontology GA 712PB UT ISI:000184805100001 ER PT J AU Schmitt, DP Alcalay, L Allensworth, M Allik, J Ault, L Austers, I Bennett, KL Bianchi, G Boholst, F Cunen, MAB Braekman, J Brainerd, EG Caral, LGA Caron, G Casullo, MM Cunningham, M Daibo, I De Backer, C De Souza, E Diaz-Loving, R Diniz, G Durkin, K Echegaray, M Eremsoy, E Euler, EA Falzon, R Fisher, ML Foley, D Fowler, R Fry, DP Fry, S Ghayur, MA Giri, VN Golden, DL Grammer, K Grimaldi, L Halberstadt, J Haque, S Herrera, D Hertel, J Hitchell, A Hoffmann, H Hooper, D Hradilekova, Z Hudek-Kene-Evi, J Huffcuff, A Jaafar, J Jankauskaite, M Kabangu-Stahel, H Kardum, I Khoury, B Kwon, H Laidra, K Laireiter, AR Lakerveld, D Lampert, A Lauri, M Lavallee, M Lee, SJ Leung, LC Locke, KD Locke, V Luksik, I Magaisa, I Marcinkeviciene, D Mata, A Mata, R McCarthy, B Mills, ME Mkhize, NJ Moreira, J Moreira, S Moya, M Munyae, M Noller, P Olimat, H Opre, A Panayiotou, A Petrovic, N Poels, K Popper, M Poulimenou, M Pyatokha, V Raymond, M Reips, UD Reneau, SE Rivera-Aragon, S Rowatt, WC Ruch, W Rus, VS Safir, MP Salas, S Sambataro, F Sandnabba, KN Schletter, R Schulmeyer, MK Schutz, A Scrimali, T Schackelford, TK Sharan, MB Shaver, PR Sichona, F Simonetti, F Sineshaw, T Sookdew, R Speelman, T Spyrou, S Sumer, HC Sumer, N Supekova, M Szlendak, T Taylor, R Tungaraza, FSK Turner, A Vandermassen, G Vanhoomissen, T Van Overwalle, F Vanwesenbeeck, I Vasey, PL Verissimo, J Voracek, M Wan, WWN Wang, TW Weiss, P Wijaya, A Woertman, L Youn, G Zupaneie, A TI Are men universally more dismissing than women? Gender differences in romantic attachment across 62 cultural regions SO PERSONAL RELATIONSHIPS LA English DT Review ID ADULT ATTACHMENT; EVOLUTIONARY PERSPECTIVE; SEX-DIFFERENCES; INDIVIDUAL-DIFFERENCES; REPRODUCTIVE STRATEGY; BEHAVIOR; PATTERNS; STYLES; DIMENSIONS; MODEL AB Gender differences in the dismissing form of adult romantic attachment were investigated as part of the International Sexuality Description Project-a survey study of 17,804 people from 62 cultural regions. Contrary to research findings previously reported in Western cultures, we found that men were not significantly more dismissing than women across all cultural regions. Gender differences in dismissing romantic attachment were evident in most cultures, but were typically only small to moderate in magnitude. Looking across cultures, the degree of gender differentiation in dismissing romantic attachment was predictably associated with sociocultural indicators. Generally, these associations supported evolutionary theories of romantic attachment, with smaller gender differences evident in cultures with high-stress and high-fertility reproductive environments. Social role theories of human sexuality received less support in that more progressive sex-role ideologies and national gender equity indexes were not cross-culturally linked as expected to smaller gender differences in dismissing romantic attachment. C1 Bradley Univ, Dept Psychol, Peoria, IL 61625 USA. Pontificia Univ Catolica Chile, Santiago, Chile. Univ Tartu, EE-50090 Tartu, Estonia. Univ Louisville, Louisville, KY 40292 USA. Latvian State Univ, LV-1063 Riga, Latvia. Univ New Mexico, Albuquerque, NM 87131 USA. Slovak Acad Sci, Bratislava, Slovakia. Univ Malta, Msida, Malta. State Univ Ghent, B-9000 Ghent, Belgium. Clemson Univ, Clemson, SC 29631 USA. Univ Laval, Quebec City, PQ G1K 7P4, Canada. Univ Buenos Aires, RA-1053 Buenos Aires, DF, Argentina. Osaka Univ, Suita, Osaka 565, Japan. Illinois State Univ, Normal, IL 61761 USA. Natl Autonomous Univ Mexico, Mexico City 04510, DF, Mexico. Univ Brasilia, BR-70910900 Brasilia, DF, Brazil. Univ Western Australia, Nedlands, WA 6009, Australia. Univ Lima, Lima, Peru. Bogazici Univ, TR-80815 Bebek, Turkey. Univ Kassel, D-3500 Kassel, Germany. York Univ, N York, ON M3J 1P3, Canada. Univ Queensland, St Lucia, Qld 4067, Australia. Abo Akad Univ, Turku, Finland. Indian Inst Technol, Kharagpur 721302, W Bengal, India. Univ Hawaii Manoa, Honolulu, HI 96822 USA. Univ Catania, I-95124 Catania, Italy. Univ Otago, Dunedin, New Zealand. Univ Dakah, Dhaka, Bangladesh. Tech Univ Chemnitz, Chemnitz, Germany. Knox Coll, Galesburg, IL USA. Comenius Univ, Bratislava 81806, Slovakia. Univ Malaya, Kuala Lumpur 59100, Malaysia. Vilnius State Univ, Vilnius, Lithuania. Amer Univ Beirut, Beirut, Lebanon. Kwangju Hlth Coll, Kwangju, South Korea. Salzburg Univ, Inst Psychol, A-5020 Salzburg, Austria. Univ Utrecht, NL-3508 TC Utrecht, Netherlands. City Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China. Univ Idaho, Moscow, ID 83843 USA. Slovak Acad Sci, Bratislava, Slovakia. Univ Zimbabwe, Harare, Zimbabwe. Univ Lisbon, P-1699 Lisbon, Portugal. Univ Cent Lancashire, Preston PR1 2HE, Lancs, England. Loyola Marymount Univ, Los Angeles, CA 90045 USA. Univ Natal, ZA-4001 Durban, South Africa. Univ Granada, E-18071 Granada, Spain. Univ Babes Bolyai, R-3400 Cluj Napoca, Romania. Univ Cyprus, Nicosia, Cyprus. Univ Belgrade, YU-11001 Belgrade, Yugoslavia. Univ Montpellier 2, F-34095 Montpellier 5, France. Univ Zurich, CH-8006 Zurich, Switzerland. Univ Alabama, Tuscaloosa, AL 35487 USA. Baylor Univ, Waco, TX 76798 USA. Queens Univ Belfast, Belfast, Antrim, North Ireland. Univ Ljubljana, Ljubljana 61000, Slovenia. Univ Haifa, IL-31999 Haifa, Israel. Florida Atlantic Univ, Boca Raton, FL 33431 USA. Univ Calif Davis, Davis, CA 95616 USA. Univ Dar Es Salaam, Dar Es Salaam, Tanzania. Ramapo Coll, Mahwah, NJ USA. Middle E Tech Univ, TR-06531 Ankara, Turkey. Nicholas Copernicus Univ, PL-87100 Torun, Poland. SUNY Coll Plattsburgh, Plattsburgh, NY 12901 USA. Free Univ Brussels, Brussels, Belgium. Univ Lethbridge, Lethbridge, AB T1K 3M4, Canada. Univ Vienna, Sch Med, A-1010 Vienna, Austria. Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China. Charles Univ, CR-11636 Prague 1, Czech Republic. Couple Clin Indonesia, Surabaya, Indonesia. Univ Utrecht, NL-3508 TC Utrecht, Netherlands. RP Schmitt, DP, Bradley Univ, Dept Psychol, Peoria, IL 61625 USA. NR 108 TC 7 PU BLACKWELL PUBL LTD PI OXFORD PA 108 COWLEY RD, OXFORD OX4 1JF, OXON, ENGLAND SN 1350-4126 J9 PERSONAL RELATIONSHIPS JI Pers. Relat. PD SEP PY 2003 VL 10 IS 3 BP 307 EP 331 PG 25 SC Psychology, Social GA 715LJ UT ISI:000184973300003 ER PT J AU Oloriz, F Villasenor, AB Gonzalez-Arreola, C TI Major lithostratigraphic units in land-outcrops of north-central Mexico and the subsurface along the northern rim of Gulf of Mexico Basin (Upper Jurassic-lowermost Cretaceous): a proposal for correlation of tectono-eustatic sequences SO JOURNAL OF SOUTH AMERICAN EARTH SCIENCES LA English DT Article DE stratigraphy; biostratigraphy; correlation; tectono-eustasy; Upper Jurassic; lowermost crctaceous; North-Central Mexico; Northern gulf rim ID SEA DRILLING PROJECT; CONTINENTAL-MARGIN; PALEOGEOGRAPHIC EVOLUTION; ATLANTIC; STRATIGRAPHY; MOROCCO; SITE-534; LEG-79; TETHYS; RECONSTRUCTIONS AB The stratigraphic and geodynamic interpretation of Upper Jurassic lithostratigraphic units is revised in north-central Mexico and the northern rim of the Gulf of Mexico Basin through updated ammonite and calpionellid biochronostratigraphy. Significant events in the geodynamic evolution in these areas are evaluated and interpreted in terms of tectono-eustatic sequences (TES) of third and second orders. 3rd-TES-I and 2nd-TES-II/III in Mexico and 3rd-TES-I, 3rd-TES-II and 3rd-TES-III at the northern rim of the Gulf of Mexico show the main traits of the Upper Jurassic Supercycle in these regions, allowing the identification of a combined 'Atlantic-Tethyan cachet' in the course of structuring/configuration of the Gulf of Mexico Basin during the Late Jurassic. The easy identification of 3rd-TES-I in north-central Mexico and at the northern rim of the Gulf of Mexico Basin shows no significant difference in geodynamic history during the Oxfordian, which contrasts with the increasing difference from the Kimmeridgian to the Early-Middle Berriasian. Shared trends in stratigraphic architecture with the European margin of the North Atlantic Basin, as well as with epicontinental shelves surrounding Iberia and other Tethyan areas, are interpreted to show phases of the geodynamic evolution in the central North Atlantic Basin, traces of which are recognizable also in western Africa. (C) 2003 Elsevier Ltd. All rights reserved. C1 Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. Univ Nacl Autonoma Mexico, Dept Palaeontol, Inst Geol, Mexico City 04510, DF, Mexico. RP Oloriz, F, Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. NR 190 TC 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0895-9811 J9 J S AMER EARTH SCI JI J. South Am. Earth Sci. PD JUL PY 2003 VL 16 IS 3 BP 119 EP 142 DI 10.1016/S0895-9811(03)00049-X PG 24 SC Geosciences, Multidisciplinary GA 715WD UT ISI:000184995000005 ER PT J AU Fuentes, V Toledano, M Osorio, R Carvalho, RM TI Microhardness of superficial and deep sound human dentin SO JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A DT Article DE microhardness; superficial; deep; sound; dentin ID DEMINERALIZED HUMAN; TENSILE PROPERTIES; MICRO-INDENTATION; BOND STRENGTH; HUMAN ENAMEL; HARDNESS; ELASTICITY; MODULUS; SUBSTRATE AB Our purpose in this study was to determine the microhardness of superficial and deep dentin by means of two indentation methods (Knoop and Vickers) under two different applied loads. Twelve dentin discs approximately 2-mm thick were obtained from both superficial and deep dentin by transversally sectioning the crowns of sound, extracted human third molars with a diamond blade under water irrigation. Dentin surfaces were sequentially polished, and indentations (n = 20 per surface) were performed with either Vickers indentor at loads of 300 and 500 g, respectively, or Knoop indentor at loads of 50 and 100 g, respectively. Average Vickers hardness number (VHN) and Knoop hardness number (KHN) were calculated and treated with two-way analysis of variance (ANOVA) and Student's t test. Microhardness of dentin was not influenced by the different loads applied for both indentation methods. Knoop hardness was significantly higher for superficial than for deep dentin (p < 0.05). Conversely, Vickers hardness was not significantly different for both substrates (p > 0.05). Differences in dentin hardness as a function of depth exist, but they might not be relevant, and no alteration of the distribution of stresses along the adhesive interface is expected. (C) 2003 Wiley Periodicals, Inc. C1 Univ Granada, Sch Dent, Dept Dent Mat, E-18071 Granada, Spain. Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, BR-05508 Sao Paulo, Brazil. RP Toledano, M, Univ Granada, Sch Dent, Dept Dent Mat, E-18071 Granada, Spain. NR 32 TC 2 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158-0012 USA SN 0021-9304 J9 J BIOMED MATER RES PART A JI J. Biomed. Mater. Res. Part A PD SEP 15 PY 2003 VL 66A IS 4 BP 850 EP 853 DI 10.1002/jbm.a.10064 PG 4 SC Engineering, Biomedical; Materials Science, Biomaterials GA 717DB UT ISI:000185069400015 ER PT J AU Ceballos, L Camejo, DG Fuentes, MV Osorio, R Toledano, M Carvalho, RM Pashley, DH TI Microtensile bond strength of total-etch and self-etching adhesives to caries-affected dentine SO JOURNAL OF DENTISTRY DT Article DE dentine bonding; total-etch; self-etch; caries-affected dentine; microtensile bond strength; microhardness; DIAGNOdent laser ID LASER FLUORESCENCE SYSTEM; CARIOUS DENTIN; OCCLUSAL CARIES; CLINICAL-PERFORMANCE; IN-VITRO; ULTRASTRUCTURE; AUTOFLUORESCENCE; QUANTIFICATION; MICROHARDNESS; PERMEABILITY AB Objectives. To evaluate the microtensite bond strength of total-etch or self etch adhesives to caries-affected versus normal dentine, and to correlate these bond strengths with DIAGNOdent laser fluorescence and Knoop microhardness (KH) measurements of the substrates. Methods. Extracted carious human molars were ground to expose fiat surfaces where the caries lesion was surrounded by normal dentine. Surfaces were bonded with either Prime Et Bond NT, Scotchbond 1, Clearfil SE Bond or Prompt L-Pop, according to manufacturers' recommendations. A crown was built up using resin composite (Tetric Ceram). After storage in water (37 degreesC, 24 h), teeth were vertically serially sectioned into 0.7 mm thick stabs and trimmed to yield 1 mm(2) test area that contained either caries-affected or normal dentine. Samples were tested in tension in an Instron machine at 1 mm/min. The quality of the dentine just beneath each fractured specimen was measured by laser fluorescence and KH. Results. Total-etch adhesives yielded higher bond strengths than self-etching systems. Significantly lower results were obtained with Prompt L-Pop. All the adhesives attained higher strengths in normal than in caries-affected dentine, but the differences were only significant for Prime Et Bond NT and Clearfil. SE Bond. Higher laser fluorescence values and lower KH (p < 0.001) were recorded in caries-affected dentine compared to normal dentine. Conclusions. The total-etch adhesives evaluated produced higher bond strengths to normal and caries-affected dentine than self-etching systems. Laser fluorescence measurements discriminated caries-affected dentine from normal dentine, and were strongly correlated with KH. However, laser fluorescence and KH did not permit high correlations with resin-dentine bond strengths in caries-affected dentine. (C) 2003 Elsevier Ltd. All rights reserved. C1 Med Coll Georgia, Sch Dent, Dept Oral Biol Physiol, Augusta, GA 30912 USA. Univ Granada, Sch Dent, Dept Dent Mater, Granada, Spain. Univ Los Andes, Sch Dent, Merida, Venezuela. Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mater, Sao Paulo, Brazil. RP Pashley, DH, Med Coll Georgia, Sch Dent, Dept Oral Biol Physiol, Augusta, GA 30912 USA. NR 58 TC 14 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0300-5712 J9 J DENT JI J. Dent. PD SEP PY 2003 VL 31 IS 7 BP 469 EP 477 DI 10.1016/S0300-5712(03)00088-5 PG 9 SC Dentistry, Oral Surgery & Medicine GA 721YR UT ISI:000185346500004 ER PT J AU Flores-Marquez, EL Surinach, E Galindo-Zaldivar, J Maldonado, A TI Three-dimensional gravity inversion model of the deep crustal structure of the central drake passage (Shackleton Fracture Zone and West Scotia Ridge, Antarctica) SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH LA English DT Article DE three-dimensional deep structure; gravity; global gravity grid; global seafloor topography; numerical inversion; Shackleton Fracture Zone ID MID-ATLANTIC RIDGE; SATELLITE ALTIMETRY; BATHYMETRIC PREDICTION; ANOMALIES; SEA; TECTONICS; PENINSULA; INTERSECTION; TOPOGRAPHY; TERRAIN AB [1] Gravity and bathymetric data collected by the Spanish R/V Hesperides over the Shackleton Fracture Zone (SFZ) and the West Scotia Ridge (WSR) were used to invert for the three-dimensional (3-D) structure of the deep crust. Data from the Global Gravity Grid and Global Seafloor Topography (GGSFT) were also employed to enlarge the cruise area. The merged data were analyzed to determine the 3-D deep structure by numerical inversion. Water layer contribution to the gravity anomaly was eliminated, taking into account the bathymetry. Spectral analysis of the reduced data yielded mean crust-mantle interface (CMI) depths of 10.5 +/- 1.2 km. Inversion of the regional anomaly gave a 3-D detailed geometry of the CMI, which generally agrees with the 2-D models established along profiles where gravity data and multichannel seismic lines are available. The WSR shows an asymmetrical structure with a reverse fault located southeastward to the central valley. This fault was developed, probably, as a consequence of the NW-SE compressive deformations, which occurred following the spreading. The 3-D view shows that the SW end of the spreading axis was affected more intensely by the compression. The SFZ represents an active sinistral transpressive fault zone of the Scotia-Antarctica plate boundary and shows crustal thickening related to bathymetric highs. The crustal thinning detected at the intersection with the inactive WSR suggests a complex interaction between these two structures. C1 Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City 04510, DF, Mexico. Univ Barcelona, Fac Geol, Dept Geodinam & Geofis, E-08028 Barcelona, Spain. Univ Granada, Dept Geodinam, E-18071 Granada, Spain. Univ Granada, Fac Ciencias, CSIC, Inst Andaluz Ciencias Tierra, E-18002 Granada, Spain. RP Flores-Marquez, EL, Univ Nacl Autonoma Mexico, Inst Geofis, Cd Univ Circuito Exterior, Mexico City 04510, DF, Mexico. NR 37 TC 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-SOLID EARTH JI J. Geophys. Res.-Solid Earth PD SEP 27 PY 2003 VL 108 IS B9 AR 2445 DI 10.1029/2002JB009134 PG 11 SC Geochemistry & Geophysics GA 727HK UT ISI:000185652400003 ER PT J AU Pashley, DH Agee, KA Wataha, JC Rueggeberg, F Ceballos, L Itou, K Yoshiyama, M Carvalho, RM Tay, FR TI Viscoelastic properties of demineralized dentin matrix SO DENTAL MATERIALS DT Article DE dentin matrix; stress-relaxation; creep; hybrid layers ID X-RAY-DIFFRACTION; STRESS-RELAXATION; COMPRESSIVE CREEP; IN-VIVO; COLLAGEN; CHEMISTRY; TIME; DEFORMATION; TISSUE; BONDS AB Objectives. To evaluate the viscoelastic properties of demineralized dentin matrix. Stress-relaxation studies were done on matrices in tension and strain elongation or creep studies were done in both tension and compression. Methods. Mid-coronal dentin disks were prepared from extracted unerupted human third molars. Disks were 0.5 mm thick for stress-relaxation or tensile creep experiments and 0.2-0.3 mm thick for compressive creep studies. 'I' beam specimens were prepared from dentin disks and the middle region was demineralized in 0.5 M EDTA (pH 7) for 4 days. The specimens were held in miniature friction grips in water and pulled at 100 mum s(-1) to strains of 5, 10, 15 or 20% and then held for 10 min to follow the decay of stress over time. Creep was determined on demineralized dentin immersed in water in tension and in compression. Compressive creep was measured using an LVDT contact probe with loads of 0.02-0.5 N. Strain data were converted to compliance-time curves (strain/stress) and expressed as total compliance (J(t)), instantaneous elastic compliance (J(o)), retarded elastic compliance (J(R)) and viscous response (t/eta) or creep. Results. The dentin matrix exhibits both stress-relaxation and creep behavior. Stress-relaxation and tensile creep were independent of strain but compressive creep rates were inversely related to compressive strain.-Creep values were about 10% at low compressive strains, but fell progressively to 1% at high strains. Compliance-time curves fell with stress and came closer together. However, tensile creep was about 3% regardless of the strain. Significance. The dentin matrix exhibits viscoelastic properties, but is not linearly. viscoelastic. The relatively high creep rates of the matrix under low compressive loads may cause viscous deformations in poorly infiltrated hybrid layers in resin-bonded teeth under function. 2003 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved. C1 Med Coll Georgia, Sch Dent, Dept Oral Biol & Maxillofacial Pathol, Augusta, GA 30912 USA. Med Coll Georgia, Dept Oral Rehabil, Augusta, GA 30912 USA. Univ Granada, Div Dent Mat, Granada, Spain. Okayama Univ, Dept Conservat Dent, Okayama 7008530, Japan. USP, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Bauru, SP, Brazil. Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China. RP Pashley, DH, Med Coll Georgia, Sch Dent, Dept Oral Biol & Maxillofacial Pathol, Augusta, GA 30912 USA. NR 31 TC 8 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0109-5641 J9 DENT MATER JI Dent. Mater. PD DEC PY 2003 VL 19 IS 8 BP 700 EP 706 DI 10.1016/S0109-5641(03)00016-2 PG 7 SC Dentistry, Oral Surgery & Medicine; Materials Science, Biomaterials GA 730LK UT ISI:000185832100002 ER PT J AU Garcia-Casco, A Haissen, F Castro, A El-Hmidi, H Torres-Roldan, RL Millan, G TI Synthesis of staurolite in melting experiments of a natural metapelite: Consequences for the phase relations in low-temperature pelitic migmatites SO JOURNAL OF PETROLOGY LA English DT Article DE metapelites; migmatites; partial melting; P-T grid; staurolite ID HIGH-GRADE METAMORPHISM; PISTON-CYLINDER EXPERIMENTS; ROCK-FORMING MINERALS; P-T PATHS; EXPERIMENTAL CONSTRAINTS; MIXING PROPERTIES; GRANITIC LIQUIDS; IBERIAN MASSIF; SKAGIT GNEISS; MG EXCHANGE AB We document experiments on a natural metapelite in the range 650-775degreesC, 6-14 kbar, 10 wt % of added water, and 700-850degreesC, 4-10 kbar, no added water. Staurolite systematically formed in the fluid-present melting experiments above 675degreesC, but formed only sporadically in the fluid-absent melting experiments. The analysis of textures, Phase assemblages, and variation of phase composition and Fe-Mg partitioning with P and T suggests that supersolidus staurolite formed at (near-) equilibrium during fluid-present melting reactions. The experimental results me used to work out the phase relations in the system K2O-Na2O-FeO-MgO-Al2O3-SiO2-H2O appropriate for initial melting of metapelites at the upper amphibolite facies. The P-T grid developed predicts the existence of a stable P-T field for supersolidus staurolite that should be encountered by aluminous Fe-rich metapelites during fluid-present melting at relatively low temperature and intermediate pressures (675-700degreesC, 6-10 kbar for X-H2O = 1, in the KNFMASH system), but not during fluid-absent melting. The implications of these findings for the scarcity of staurolite in migmatites are discussed. C1 Univ Granada, Dept Mineral & Petrol, Granada 18002, Spain. Univ Chouaib Doukkali, Dept Geol, El Jadida, Morocco. Univ Huelva, Dept Geol, Huelva 21819, Spain. Inst Geol & Palaeontol, Havana, Cuba. RP Garcia-Casco, A, Univ Granada, Dept Mineral & Petrol, Granada 18002, Spain. NR 94 TC 3 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0022-3530 J9 J PETROL JI J. Petrol. PD OCT PY 2003 VL 44 IS 10 BP 1727 EP 1757 DI 10.1093/petrology/egg056 PG 31 SC Geochemistry & Geophysics GA 732UQ UT ISI:000185964300001 ER PT J AU Salomao, A Cristelli, MP del Moral, R Bhering, AC Souza, J Bento, C TI Outcome of chronic renal dysfunction in kidney transplantation after receiving Losartan for more than one year. SO JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY DT Meeting Abstract C1 Univ Granada, Dept Pathol, Granada, Spain. UFMG, Hosp Clin, Belo Horizonte, MG, Brazil. NR 0 TC 0 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 1046-6673 J9 J AMER SOC NEPHROL JI J. Am. Soc. Nephrol. PD NOV PY 2003 VL 14 SU Suppl. S BP 916A EP 916A PG 1 SC Urology & Nephrology GA 737FE UT ISI:000186219104216 ER PT J AU Armstrong, V Barrero, AF Alvarez-Manzaneda, EJ Cortes, M Sepulveda, B TI An efficient stereoselective synthesis of cytotoxic 8-epipuupehedione SO JOURNAL OF NATURAL PRODUCTS LA English DT Article AB An efficient and highly stereoselective synthesis of cytotoxic 8-epipuupehedione (1b) was achieved starting from natural (-)-drimenol (6). The key step to obtain stereoselectivity was the simultaneous demethylation and oxidation of the dihydrobenzopyran methoxy derivatives 10a and 10b. C1 Pontificia Univ Catolica Chile, Fac Quim, Santiago, Chile. Univ Granada, Fac Ciencias, Dept Quim Organ, Granada 18071, Spain. RP Armstrong, V, Pontificia Univ Catolica Chile, Fac Quim, Casilla 306,Correo 22, Santiago, Chile. NR 10 TC 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0163-3864 J9 J NAT PROD JI J. Nat. Prod. PD OCT PY 2003 VL 66 IS 10 BP 1382 EP 1383 DI 10.1021/np030029r PG 2 SC Plant Sciences; Chemistry, Applied; Chemistry, Medicinal; Pharmacology & Pharmacy GA 737NC UT ISI:000186237800017 ER PT J AU Sanchez-Gonzalez, S Ruiz-Garcia, J Galvez-Ruiz, MJ TI Langmuir-Blodgett films of biopolymers: a method to obtain protein multilayers SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE Langmuir-Blodgett films; interfacial stability; BSA monolayers ID MIXED MONOLAYERS; SERUM-ALBUMIN; DESORPTION; INTERFACE AB In this work, we present a methodology for choosing the best experimental conditions for transferring protein Langmuir films onto solid substrates. As an example of applying the proposed methodology, we used monolayers of the protein bovine serum albumin, which is a very stable protein and is of great interest in the development of immunosensors. Langmuir-Blodgett (LB) films of this protein, on different solid substrates, were obtained and characterized as a function of pH, surface pressure, temperature, and contact angle. The compressibility modulus, the spreading entropy, and the fraction of desorbed protein sections were used as control parameters to find these conditions. A careful analysis of these parameters shows that there is a window on the values of these experimental parameters in which the LB films are best formed. Our methodology can be applied to other biomacromolecules to find the best conditions to form LB films from isotherm measurements. (C) 2003 Elsevier Inc. All rights reserved. C1 Univ Granada, Fac Sci, Biocolloid & Fluid Phys Grp, E-18071 Granada, Spain. Univ Extremadura, Sch Ind Engn, Dept Elect & Electromech Engn, E-06071 Badajoz, Spain. UA San Luis Potosi, Inst Fis, San Luis Potosi 78000, SLP, Mexico. RP Galvez-Ruiz, MJ, Univ Granada, Fac Sci, Biocolloid & Fluid Phys Grp, E-18071 Granada, Spain. NR 17 TC 12 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERFACE SCI JI J. Colloid Interface Sci. PD NOV 15 PY 2003 VL 267 IS 2 BP 286 EP 293 DI 10.1016/S0021-9797(03)00754-9 PG 8 SC Chemistry, Physical GA 738LY UT ISI:000186290700004 ER PT J AU Corsi-Cabrera, M Sanchez, AI del-Rio-Portilla, Y Villanueva, Y Perez-Garci, E TI Effect of 38 h of total sleep deprivation on the waking EEG in women: sex differences SO INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY LA English DT Article DE sleep deprivation; women; spectral power; EEG correlation; EEG coherence; frontal lobes ID MENSTRUAL-CYCLE PHASE; HUMAN CORPUS-CALLOSUM; CEREBRAL BLOOD-FLOW; SLOW-WAVE SLEEP; COGNITIVE PERFORMANCE; GENDER DIFFERENCES; SPECTRAL-ANALYSIS; FEMALE EXPOSURE; REACTION-TIME; YOUNG-ADULTS AB 38 h of sleep deprivation in women resulted in decreased alpha, increased theta and increased intrahemispheric correlation during rest and increased theta and reaction time during task. F3-O1 coherent activity was selectively decreased consistent with the role of sleep for recovery of frontal functions. Sleep deprivation effects were milder in women than in men, however, recovery was not complete suggesting that women need more sleep than men to recover. (C) 2003 Elsevier B.V. All rights reserved. C1 Univ Nacl Autonoma Mexico, Fac Psicol, Mexico City 04510, DF, Mexico. Univ Granada, Fac Psicol, Granada, Spain. RP Corsi-Cabrera, M, Univ Nacl Autonoma Mexico, Fac Psicol, Av Univ 3004, Mexico City 04510, DF, Mexico. NR 58 TC 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-8760 J9 INT J PSYCHOPHYSIOL JI Int. J. Psychophysiol. PD NOV PY 2003 VL 50 IS 3 BP 213 EP 224 DI 10.1016/S0167-8760(03)00168-5 PG 12 SC Psychology, Biological; Neurosciences; Physiology; Psychology; Psychology, Experimental GA 743VX UT ISI:000186595200004 ER PT J AU Torrelles, JM Patel, NA Anglada, G Gomez, JF Ho, PTP Lara, L Alberdi, A Canto, J Curiel, S Garay, G Rodriguez, LF TI Evidence for evolution of the outflow collimation in very young stellar objects SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM : individual (W75); ISM : jets and outflows; masers; stars : formation ID WATER MASERS; BIPOLAR OUTFLOW; STAR-FORMATION; CEPHEUS-A; REGIONS; W75N; EMISSION; SYSTEM; MOTION; SCALE AB We present Very Long Baseline Array proper-motion measurements of water masers toward two young stellar objects (YSOs) of the W75 N star-forming region. We find that these two objects are remarkable for having a similar spectral type, being separated by 0."7 (corresponding to 1400 AU), and sharing the same environment, but with a strikingly different outflow ejection geometry. One source has a collimated, jetlike outflow at a 2000 AU scale, while the other has a shell outflow at a 160 AU scale expanding in multiple directions with respect to a central compact radio continuum source. This result reveals that outflow collimation is not only a consequence of ambient conditions but is something intrinsic to the individual evolution of stars and brings to light the possibility of noncollimated outflows in the earliest stages of YSOs. C1 IEEC, CSIC, Inst Ciencias Espacio, E-08034 Barcelona, Spain. Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain. INTA, Lab Astrofis Espacial & Fis Fundamental, E-28080 Madrid, Spain. Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan. Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain. Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico. Univ Chile, Dept Astron, Santiago, Chile. UNAM, Ctr Radioastron & Astrofis, Morelia 58089, Michoacan, Mexico. NR 30 TC 27 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 1 PY 2003 VL 598 IS 2 PN Part 2 BP L115 EP L119 PG 5 SC Astronomy & Astrophysics GA 752FM UT ISI:000187149400012 ER PT J AU Vidari, G Finzi, PV Zarzuelo, A Galvez, J Zafra, C Chiriboga, X Berenguer, B La Casa, C de la Lastra, CA Motilva, V Martin, MJ TI Antiulcer and antidiarrhoeic effect of Baccharis teindalensis SO PHARMACEUTICAL BIOLOGY LA English DT Article DE Baccharis teindalensis; flavonoids; antidiarrhoeic effect; antiulcer effect; myeloperoxidase activity; neutrophils ID FREE-RADICALS; HELIANTHEMUM-GLOMERATUM; GASTRIC-LESIONS; FLAVONOIDS; RAT; ETHANOL; INJURY; REPERFUSION; MECHANISMS; SECRETION AB Baccharis teindalensis is a herbal plant which is widely used in folk medicine in Ecuador as an antiinflammatory, analgesic and antimicrobial remedy This study deals with the isolation and investigation of the main active principles of its ethanol extract, especially polyphenolic compounds belonging to the flavonoid family. Moreover, we have evaluated the antidiarrhoeic and antiulcer activities of this extract in different mouse models. The ethanol extract of B. teindalensis showed antidiarrhoeic activity against the castor oil induced diarrhoea, at all doses tested. The dose of 100 mg/kg significantly retarded the appearance of first diarrhoeic faeces (p < 0.01) and decreased the percentage of wet faeces excreted in the following four hours after administration of the cathartic agent. Both assayed doses (50 and 100 mg/kg) decreased the total weight of excreted diarrhoeic faeces (p < 0.01). On the other hand, oral pretreatment with a 100 mg/kg dose considerably diminished absolute ethanol-induced gastric ulcers (p < 0.001), whereas the lowest dose of B. teindalensis did not improve the mucosal macroscopic appearance. Furthermore, the ethanol extract induced a significant increase in myeloperoxidase activity as an index of the neutrophilic infiltration (p < 0.05 vs control) and the higher dose of this extract (100 mg/kg) inhibited it in a remarkable way (p < 0.001). These results confirm the gastrointestinal protection afforded by B. teindalensis and suggest that the antiulcer effect could be partially due to its antiinflammatory properties. C1 Univ Sevilla, Fac Farm, Dept Farmacol, E-41012 Seville, Spain. Univ Pavia, Dipartimento Chim Organ, I-27100 Pavia, Italy. Univ Granada, Fac Farm, Dept Farmacol, E-18071 Granada, Spain. Univ Cent Ecuador, Fac Ciencias Quim, Quito, Ecuador. RP Martin, MJ, Univ Sevilla, Fac Farm, Dept Farmacol, CP Garcia Gonzalez S-N, E-41012 Seville, Spain. NR 40 TC 3 PU SWETS ZEITLINGER PUBLISHERS PI LISSE PA P O BOX 825, 2160 SZ LISSE, NETHERLANDS SN 1388-0209 J9 PHARM BIOL JI Pharm. Biol. PD SEP PY 2003 VL 41 IS 6 BP 405 EP 411 PG 7 SC Plant Sciences; Medical Laboratory Technology; Pharmacology & Pharmacy GA 754EY UT ISI:000187290800002 ER PT J AU Magan, R Marin, C Rosales, MJ Barrera, MA Salas, JM Sanchez-Moreno, M TI Activities of Pt(II) and Ru(III) triazole-pyrimidine complexes against Trypanosoma cruzi and T-brucei brucei SO PHARMACOLOGY LA English DT Article DE chemotherapy; cytotoxicity; glycolytic metabolism; macromolecule synthesis; triazole-pyrimidine complexes; Trypanosoma brucei brucei; Trypanosoma cruzi; ultrastructural study ID SESQUITERPENE LACTONES; LEISHMANIA-DONOVANI; PHYTOMONAS-STAHELI; DERIVATIVES; CYTOTOXICITY; METABOLISM; FORMS AB We studied the biological activity of three newly synthesized metal complexes of triazole-pyrimidine derivatives that were previously observed to inhibit in vitro growth of epimastigotes of Trypanosoma cruzi and procyclic forms of Trypanosoma brucei brucei. We analyzed the possible inhibitory effect of these compounds on the synthesis of DNA, RNA and protein, ultrastructure and excretion of metabolites by these parasites. RNA synthesis was inhibited by all three complexes assayed. These complexes also led to anomalies of the main organelles (e.g. nucleus, kinetoplast and mitochondria). In addition, these complexes may be capable of altering the excretion of metabolites by the parasites. Copyright (C) 2004 S. Karger AG, Basel. C1 Univ Granada, Fac Ciencias, Inst Biotechnol, Dept Parasitol, ES-18071 Granada, Spain. Univ Granada, Fac Ciencias, Dept Quim Inorgan, ES-18071 Granada, Spain. Univ Autonoma Yucatan, Ctr Invest Biol, Parasitol Lab, Merida, Mexico. RP Sanchez-Moreno, M, Univ Granada, Fac Ciencias, Inst Biotechnol, Dept Parasitol, C Severo Ochoa S-N, ES-18071 Granada, Spain. NR 17 TC 2 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 0031-7012 J9 PHARMACOLOGY JI Pharmacology PY 2004 VL 70 IS 2 BP 83 EP 90 DI 10.1159/000074672 PG 8 SC Pharmacology & Pharmacy GA 755HC UT ISI:000187396600005 ER PT J AU Do Campo, M Nieto, F TI Transmission electron microscopy study of very low-grade metamorphic evolution in Neoproterozoic pelites of the Puncoviscana formation (Cordillera Oriental, NW Argentina) SO CLAY MINERALS LA English DT Article DE Central Andes; Puncoviscana Formation; intermediate Na-K dioctahedral micas; wonesite; mixed layers; illite crystallinity ID COMPOSITIONAL CONTROLS; CRYSTALLINITY-INDEX; CELL DIMENSIONS; ALBORAN DOMAIN; 2M1 MUSCOVITE; CHLORITE; PARAGONITE; MICA; TEM; WONESITE AB The Puncoviscana Formation, largely cropping out in NW Argentina, is mainly composed of a pelite-greywacke turbidite sequence affected by incipient regional metamorphism and polyphase deformation. Metapelites, composed mainly of quartz, albite, dioctahedral mica and chlorite, were sampled in the Lules-Puncoviscana and Choromoro belts. Lattice-fringe images, selected area electron diffraction and analytical electron microscopy analyses, Coupled with previous data from white mica crystallinity index, indicate a state of reaction progress for Puncoviscana slates consistent with medium anchizone- to epizone-grade metamorphism. The 2M polytype prevails in dioctahedral micas, coexisting in a few cases with the 1 Md polytype as a consequence of lack of equilibrium. The 2M polytype coexists with 3 T in two slates and long-range four-layer and ten-layer stacking sequences were identified in another sample. Samples with 3T and long-range stacking sequences present b values characteristic of intermediate-high pressure metamorphism and ordered chlorites (1L, 2L, 3L and 7L) prevail. Based oil the Si contents of dioctahedral micas and considering peak temperatures of similar to350-400degreesC, pressures from 5 kbar and 5-7 kbar were derived for metapelites from the Lules-Puncoviscana and Choromoro belts, respectively. These values agree with facies series derived from the b values. Micas with a wide range of phengitic substitution, as evidenced by Fe + Mg and Si contents, coexist. These variations Could not arise from the disturbing effect of detrital white K-mica because TEM evidence indicates that they are absent or represent <10% Of the mica Population. Thus, compositional variations Suggest that dioctahedral micas of individual slates crystallized at different pressure conditions in response to the P-T path of the metamorphism. Moreover, in several biotite-free slates the illite crystallinity (IC) values lead to all Underestimation of the metamorphic grade attained in these rocks. The coexistence of IC corresponding to anchizone and the Occurrence of biotite in some slates and felsic metavolcanic rocks intercalated in the Puncoviscana metasediments are interpreted to be the result of a metamorphic path including a relatively high-pressure/low-temperature (HP/LT) event, followed by a lower-pressure overprint possibly at higher temperatures than the HP/LT event. Small micas formed during the high-pressure stage would prevail in the <2 mum fraction, producing anchizone IC. C1 Univ Buenos Aires, Inst Geocronol & Geol Isotop, RA-1428 Buenos Aires, DF, Argentina. Univ Buenos Aires, Fac Ciencias Exactas & Nat, RA-1428 Buenos Aires, DF, Argentina. Univ Granada, CSIC, Dept Mineral & Petrol, Granada 18002, Spain. Univ Granada, CSIC, IACT, Granada 18002, Spain. RP Do Campo, M, Univ Buenos Aires, Inst Geocronol & Geol Isotop, Pabellon INGEIS,Ciudad Univ, RA-1428 Buenos Aires, DF, Argentina. NR 68 TC 7 PU MINERALOGICAL SOCIETY PI LONDON PA 41 QUEENS GATE, LONDON SW7 5HR, ENGLAND SN 0009-8558 J9 CLAY MINER JI Clay Min. PD DEC PY 2003 VL 38 IS 4 BP 459 EP 481 DI 10.1180/0009855033840109 PG 23 SC Mineralogy GA 759PT UT ISI:000187746600004 ER PT J AU Cordon, O Herrera, F Gomide, F Hoffmann, F Magdalena, L TI Genetic fuzzy systems. New developments SO FUZZY SETS AND SYSTEMS DT Editorial Material C1 Univ Granada, Dept Comp Sci & Artificial Intelligence, Granada 18071, Spain. Univ Estadual Campinas, FEEC, Dept Comp Engn & Ind Automat, BR-13083970 Campinas, SP, Brazil. Royal Inst Technol, Ctr Autonomous Syst, S-10044 Stockholm, Sweden. Univ Politecn Madrid, ETSI Telecommun, Dept Appl Math, Madrid 28040, Spain. RP Cordon, O, Univ Granada, Dept Comp Sci & Artificial Intelligence, Granada 18071, Spain. NR 6 TC 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0114 J9 FUZZY SET SYSTEM JI Fuzzy Sets Syst. PD JAN 1 PY 2004 VL 141 IS 1 BP 1 EP 3 DI 10.1016/S0165-0114(03)00110-6 PG 3 SC Computer Science, Theory & Methods; Mathematics, Applied; Statistics & Probability GA 759WL UT ISI:000187774100001 ER PT J AU Cordon, O Gomide, F Herrera, F Hoffmann, F Magdalena, L TI Ten years of genetic fuzzy systems: current framework and new trends SO FUZZY SETS AND SYSTEMS DT Review DE fuzzy rule based systems; genetic algorithms; genetic fuzzy systems; tuning; learning ID RULE-BASED SYSTEMS; ARTIFICIAL NEURAL NETWORKS; KNOWLEDGE-BASE; LEARNING ALGORITHM; LOGIC CONTROLLERS; CLASSIFICATION PROBLEMS; EVOLUTIONARY PROCESS; SELECTION; DESIGN; OPTIMIZATION AB Fuzzy systems have demonstrated their ability to solve different kinds of problems in various application domains. Currently, there is an increasing interest to augment fuzzy systems with learning and adaptation capabilities. Two of the most successful approaches to hybridise fuzzy systems with learning and adaptation methods have been made in the realm of soft computing. Neural fuzzy systems and genetic fuzzy systems hybridise the approximate reasoning method of fuzzy systems with the learning capabilities of neural networks and evolutionary algorithms. The objective of this paper is to provide an account of genetic fuzzy systems, with special attention to genetic fuzzy rule-based systems. After a brief introduction to models and applications of genetic fuzzy systems, the field is overviewed, new trends are identified, a critical evaluation of genetic fuzzy systems for fuzzy knowledge extraction is elaborated, and open questions that remain to be addressed in the future are raised. The paper also includes some of the key references required to quickly access implementation details of genetic fuzzy systems. (C) 2003 Elsevier B.V. All rights reserved. C1 Univ Granada, Dept Comp Sci & Artificial Intelligence, Granada 18071, Spain. State Univ Campinas, FEEC, Dept Comp Engn & Ind Automat, BR-13083970 Campinas, SP, Brazil. Royal Inst Technol, Ctr Autonomous Syst, S-10044 Stockholm, Sweden. Univ Politecn Madrid, ETSI Telecommun, Dept Math Appl, Madrid 28040, Spain. RP Cordon, O, Univ Granada, Dept Comp Sci & Artificial Intelligence, Granada 18071, Spain. NR 135 TC 51 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0114 J9 FUZZY SET SYSTEM JI Fuzzy Sets Syst. PD JAN 1 PY 2004 VL 141 IS 1 BP 5 EP 31 DI 10.1016/S0165-0114(03)00111-8 PG 27 SC Computer Science, Theory & Methods; Mathematics, Applied; Statistics & Probability GA 759WL UT ISI:000187774100002 ER PT J AU Ortiz, JJ Requena, I TI An order coding genetic algorithm to optimize fuel reloads in a nuclear boiling water reactor SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID LOADING PATTERN DESIGN; MANAGEMENT; NETWORKS; SYSTEM AB A genetic algorithm is used to optimize the nuclear fuel reload for a boiling water reactor, and an order coding is proposed for the chromosomes and appropriate crossover and mutation operators. The fitness function was designed so that the genetic algorithm creates fuel reloads that, on one hand, satisfy the constrictions for the radial power peaking factor, the minimum critical power ratio, and the maximum linear heat generation rate while optimizing the effective multiplication factor at the beginning and end of the cycle. To find the values of these variables, a neural network trained with the behavior of a reactor simulator was used to predict them. The computation time is therefore greatly decreased in the search process. We validated this method with data from five cycles of the Laguna Verde Nuclear Power Plant in Mexico. C1 Inst Nacl Invest Nucl, Dept Sistemas Nucl, Mexico City, DF, Mexico. Univ Granada, Dept Ciencias Computac, EIA ETSI Informat, E-18071 Granada, Spain. RP Ortiz, JJ, Inst Nacl Invest Nucl, Dept Sistemas Nucl, Carr Mexico Toluca Km 36-5, Mexico City, DF, Mexico. EM jjortiz@nuclear.inin.mx NR 20 TC 5 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2004 VL 146 IS 1 BP 88 EP 98 PG 11 SC Nuclear Science & Technology GA 761LM UT ISI:000187910300005 ER PT J AU Figueiredo, MS Fernandez-Rosado, F Kunii, I Pacheco, AC Lorente, JA Budowle, B TI Brazilian Caucasian population data for 15 STR loci (PowerPlex 16 (TM) kit) SO JOURNAL OF FORENSIC SCIENCES DT Article DE forensic science; DNA typing; population genetics; Brazil; South America ID GENETIC-VARIATION C1 Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, E-18012 Granada, Spain. Fleury Med Diagnost Ctr, Mol Biol Sect, Sao Paulo, Brazil. FBI Lab Div, Quantico, VA USA. RP Lorente, JA, Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, Av Madrid 11, E-18012 Granada, Spain. EM jlorente@ugr.es NR 7 TC 0 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD JAN PY 2004 VL 49 IS 1 BP 167 EP 169 PG 3 SC Medicine, Legal GA 762DV UT ISI:000187956500031 ER PT J AU Melendez, E Martinez-Espin, E Karlson, IS Lorente, JA Budowle, B TI Population data on 15 STR loci (PowerPlex 16 (TM) kit) in a Costa Rica (Central America) sample population SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE forensic science; DNA typing; population genetics; Costa Rica; Central America ID GENETIC-VARIATION C1 Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, E-18102 Granada, Spain. OIJ, Lab Ciencias Forenses, San Joaquin Flores, Heredia, Costa Rica. FBI Lab Div, Quantico, VA USA. RP Lorente, JA, Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, Av Madrid 11, E-18102 Granada, Spain. EM jlorente@ugr.es NR 7 TC 2 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD JAN PY 2004 VL 49 IS 1 BP 170 EP 172 PG 3 SC Medicine, Legal GA 762DV UT ISI:000187956500032 ER PT J AU Roldan, V Santoro, M Gonzalez, JC Salas-Peregrin, JM Signorella, S Sala, LF TI Kinetics and mechanism of the reduction of Cr-VI and Cr-V by D-lactobionic acid SO JOURNAL OF INORGANIC BIOCHEMISTRY LA English DT Article DE chromium; D-lactobionic acid; kinetics ID 3-ELECTRON OXIDATIONS; PERCHLORIC-ACID; AQUACHROMIUM(IV) ION; CHROMIUM(VI); CHEMISTRY; COMPLEXES; ALCOHOLS; TOXICITY; CR(VI); REDOX AB The oxidation Of D-lactobionic acid by Cr-VI yields the 2-ketoaldobionic acid and Cr3+ as final products when a 20-times or higher excess of the aldobionic acid over Cr-VI is used. The redox reaction takes place through a complex multistep mechanism, which involves the formation of intermediate Cr-IV and Cr-IV species. Cr-IV reacts with lactobionic acid much faster than Cr-V and Cr-VI do, and cannot be directly detected. However, the formation of CrO22+, observed by the first time for an acid saccharide/Cr-VI system, provides indirect evidence for the intermediacy of Cr-IV in the reaction path. Cr-VI and the intermediate Cr-V react with lactobionic acid at comparable rates, being the complete rate laws for the Cr-VI and Cr-V consumption expressed by: -d[Cr-VI]/dt = {k(I) + k(II) [H+]} [lactobionic acid] [Cr-VI], where k(I) = (4.1 +/- 0.1) x 10(-3) M-1 s(-1) and k(II) = (2.1 +/- 0.1) X 10(-2) M-2 s(-1); and -d[Cr-V]/dt = {k(III) [H+] + (k(IV) + k(V)[H+]) [lactobionic acid]} [Cr-V], where k(III) = (1.8 +/- 0.1) x 10(-3) M-1 s(-1), k(IV) = (1.1 +/- 0.1) X 10(-2) M-1 s(-1) and k(V) = (1.0 +/- 0.1) x 10(-2) M-2 s(-1), at 33 degreesC. The Electron Paramagnetic Resonance (EPR) spectra show that five-co-ordinate oxo-Cr-V bischelates are formed at pH 1-5 with the aldobionic acid bound to Cr-V through the alpha-hydroxyacid group. (C) 2003 Elsevier Inc. All rights reserved. C1 Univ Nacl Rosario, Fac Ciencias & Farmaceut, Dept Quim Fis, RA-2000 Rosario, Santa Fe, Argentina. Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. UNL, Fac Ciencias Vet, Dept Ciencias Basicas, Esperanza, Argentina. RP Santoro, M, Univ Nacl Rosario, Fac Ciencias & Farmaceut, Dept Quim Fis, Suipacha 531, RA-2000 Rosario, Santa Fe, Argentina. EM msantoro@fbioyf.unr.edu.ar signorel@infovia.com.ar inquibir@satlink.com NR 52 TC 4 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0162-0134 J9 J INORG BIOCHEM JI J. Inorg. Biochem. PD FEB PY 2004 VL 98 IS 2 BP 347 EP 357 DI 10.1016/j.jinorgbio.2003.11.005 PG 11 SC Biochemistry & Molecular Biology; Chemistry, Inorganic & Nuclear GA 770EX UT ISI:000188711200017 ER PT J AU Gonzalez, AE Martinez-Lopez, F Moncho-Jorda, A Hidalgo-Alvarez, R TI Simulations of colloidal aggregation with short- and medium-range interactions SO PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS LA English DT Article DE colloidal aggregation; fractal dimension; potential barriers ID DIFFUSION-LIMITED AGGREGATION; AIR-LIQUID INTERFACE; 2 DIMENSIONS; CLUSTERS AB Extensive numerical simulations are used to simulate the aggregation of colloidal particles confined in a two-dimensional space. The colloidal particles experience short- or medium-range repulsions coming from a potential barrier that inhibits the aggregation of the particles into the primary minimum of the potential. When the potential barrier is short ranged, we find the usual reaction-limited colloidal aggregation (RLCA) or diffusion-limited colloidal aggregation cluster fractal dimensions for a high or low barrier, respectively. However, for medium-ranged, shallow barriers, for which the aggregation takes a long time as in the RLCA case, a very low fractal dimension is obtained, reaching values as low as 1.2 for the longer-ranged potentials considered. Nevertheless, as the aggregation proceeds, the cluster fractal dimension crosses over to a value close to the RLCA one, indicating that the small clusters of low fractal dimensionality act as the aggregating units of an RLCA system, given that they take a long time to react. A correspondence is made between our results and the experimental results by Hurd and Schaefer (Phys. Rev. Lett. 54 (1985) 1043). (C) 2003 Elsevier B.V. All rights reserved. C1 Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Cuernavaca 62251, Morelos, Mexico. Univ Granada, Grp Fis Fluidos & Biocoloides, Dept Fis Aplicada, Granada 18071, Spain. RP Gonzalez, AE, Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Apartado Postal 48-3, Cuernavaca 62251, Morelos, Mexico. EM agus@fis.unam.mx franmar@ugr.es amjm3@hermes.cam.ac.uk rhidalgo@ugr.es NR 17 TC 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4371 J9 PHYSICA A JI Physica A PD FEB 15 PY 2004 VL 333 BP 257 EP 268 DI 10.1016/j.physa.2003.10.029 PG 12 SC Physics, Multidisciplinary GA 770YH UT ISI:000188758600016 ER PT J AU Jalbout, AF Jiang, Z Abou-Rachid, H Benkaddour, NN TI On the 1,3-dipolar cycloaddition reactions of indenone with N-N-C dipoles: density functional theory calculations SO SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY LA English DT Article DE indenone; DFT; 1,3-dipolar cycloaddition; theoretical calculations; FMO approach ID MECHANISM; NITRONE AB Density functional theory (DFT) calculations at the B3LYP/6-311G* theoretical level have been performed to study the 1,3-dipolar cycloaddition (1,3-DC) reactions between indenone (1) and different 1,3-dipoles (diazomethane and N-methyl C-methoxy carbonyl nitrilimine, compounds 2 and 3, respectively). The geometrical and energetic properties were analysed for the different reactives, transition states and cycloadducts formed (compounds 4-11). The reactions proceed in the gas-phase by an asynchronous concerted mechanism, yielding different regiochemistry dependent on the 1,3-dipole chosen, although with dipole 3 some degree of synchrony was found in the formation of cycloadduct 5. The 1,3-DC between 1 and 3 was regioselective, being the cycloadduct 11 favoured against 9. The NMR chemical shift parameters (GIAO method) were also calculated for the reactives and cycloadducts. (C) 2003 Published by Elsevier B.V. C1 Univ Granada, Dept Quim Organ, Grp Modelizac & Diseno Mol, Granada 18071, Spain. Univ Abdelmalek Essaadi, Fac Sci, Dept Chim, Tetuan, Mexico. Univ New Orleans, Dept Chem, New Orleans, LA 70148 USA. RP Jalbout, AF, Univ Granada, Dept Quim Organ, Grp Modelizac & Diseno Mol, Campus Fuentenueva, Granada 18071, Spain. EM ajalbout@ejmaps.org NR 25 TC 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1386-1425 J9 SPECTROCHIM ACTA PT A-MOL BIO JI Spectroc. Acta Pt. A-Molec. Biomolec. Spectr. PD FEB PY 2004 VL 60 IS 3 BP 603 EP 609 DI 10.1016/S1386-1425(03)00268-3 PG 7 SC Spectroscopy GA 773GT UT ISI:000188890200016 ER PT J AU Rodriguez, IA Segura, EF Campos, A Ferraris, ME TI Effects of HEMA on U937 cell line. Study of cellular viability. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Granada, Fac Med & Od, Dept Histol & Biol Celular, Granada, Spain. Univ Nacl Cordoba, Fac Od, RA-5000 Cordoba, Argentina. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD DEC PY 2003 VL 82 SI Sp. Iss. C BP 28 EP 28 PG 1 SC Dentistry, Oral Surgery & Medicine GA 775UD UT ISI:000189078300148 ER PT J AU Rodriguez, IA Segura, F Campos, A Ferraris, ME TI Effects of 3 dental adhesive systems on U937 cell line. Viability study. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Granada, Sch Med & Dent, Dept Histol, E-18071 Granada, Spain. Univ Nacl Cordoba, Fac Odontol, Cat Histol, RA-5000 Cordoba, Argentina. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD DEC PY 2003 VL 82 SI Sp. Iss. C BP 60 EP 60 PG 1 SC Dentistry, Oral Surgery & Medicine GA 775UD UT ISI:000189078300336 ER PT J AU Rodriguez, IA Segura, FE Campos, A Ferraris, ME TI Microanalitical study the Na+ ion on the U937 cell line, subjected the action of HEMA. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Nacl Cordoba, Fac Odontol, Cat Histol B, RA-5000 Cordoba, Argentina. Univ Granada, Fac Med & Odontol, Dept Histol, E-18071 Granada, Spain. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD DEC PY 2003 VL 82 SI Sp. Iss. C BP 61 EP 61 PG 1 SC Dentistry, Oral Surgery & Medicine GA 775UD UT ISI:000189078300343 ER PT J AU Fuentes, MV Carvalho, R Ceballos, L Toledano, M Osorio, R Pashley, D TI Tensile strength, microhardness and diagnodent laser values of sound vs. caries-affected dentin. SO JOURNAL OF DENTAL RESEARCH DT Meeting Abstract C1 Univ Granada, E-18071 Granada, Spain. Univ Sao Paulo, BR-05508 Sao Paulo, Brazil. Med Coll Georgia, Augusta, GA 30912 USA. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD DEC PY 2003 VL 82 SI Sp. Iss. C BP 517 EP 517 PG 1 SC Dentistry, Oral Surgery & Medicine GA 775UD UT ISI:000189078303138 ER PT J AU Camejo, D Ceballos, L Fuentes, MV Osorio, R Toledano, M Carvalho, RM Pashley, DH TI Evaluation of diagnodent laser efficacy for caries affected-dentin detection. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Los Andes, Merida, Venezuela. Univ Granada, E-18071 Granada, Spain. Univ Sao Paulo, BR-05508 Sao Paulo, Brazil. Med Coll Georgia, Augusta, GA 30912 USA. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD DEC PY 2003 VL 82 SI Sp. Iss. C BP 536 EP 536 PG 1 SC Dentistry, Oral Surgery & Medicine GA 775UD UT ISI:000189078303252 ER PT J AU Camejo, D Ceballos, L Osorio, R Toledano, M Carvalho, RM Pashley, DH TI Microtensile bond strength of different bonding systems to caries-affected dentin. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 Univ Los Andes, Merida, Venezuela. Univ Granada, E-18071 Granada, Spain. Univ Sao Paulo, BR-05508 Sao Paulo, Brazil. Med Coll Georgia, Augusta, GA 30912 USA. NR 0 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD DEC PY 2003 VL 82 SI Sp. Iss. C BP 575 EP 575 PG 1 SC Dentistry, Oral Surgery & Medicine GA 775UD UT ISI:000189078303503 ER PT J AU Luzon, F Gil-Zepeda, SA Sanchez-Sesma, FJ Ortiz-Aleman, C TI Three-dimensional simulation of ground motion in the Zafarraya Basin (Southern Spain) up to 1.335 Hz under incident plane waves SO GEOPHYSICAL JOURNAL INTERNATIONAL LA English DT Article DE boundary element method; inelastic waves; local seismic effects; numerical modelling; 3-D propagation; Zafarraya Basin ID RAYLEIGH-WAVES; SEISMIC RESPONSE; S-WAVES; P-WAVES; EARTHQUAKES; MICROTREMOR; PROPAGATION; DIFFRACTION AB The Zafarraya Basin is one of the intramountain Neogene basins of the Betic mountains (Southern Spain) located in one of the regions with the highest hazard level in the Iberian Peninsula. In this paper we use the indirect boundary element method (IBEM) to compute the 3-D ground motion of the Zafarraya Basin under incident P and S waves. We solve the linear system of equations obtained in the IBEM by using a partition matrix method that has been found more efficient than the classic L . U decomposition used in previous works. Our results show that the horizontal displacements are greatly amplified both in amplitude and duration in those components where direct motion exists (radial for P and SV waves, and transverse for SH waves). In any case, the other horizontal displacements where no direct motion exists are not negligible. The most important amplifications are produced at the south of the Zafarraya Basin, where two features characterize these sites: first the depth of the basin is the largest, and second, these locations are near the end of the basin where a very steep boundary exists. Some of the waves that have produced the increase in duration have been interpreted as surface waves, which in some cases provide characteristic polarization patterns. C1 Univ Almeria, Dept Fis Aplicada, Almeria 04120, Spain. Univ Granada, Inst Andaluz Geofis & Prevenc Desastres Sism, E-18071 Granada, Spain. Univ Nacl Autonoma Mexico, Inst Ingn, Mexico City 04510, DF, Mexico. Libramiento Inst Tecnol Tehuacan SN, Inst Tecnol Tehuacan, Tehuacan 75770, Mexico. Inst Mexicano Petr, Mexico City 07730, DF, Mexico. RP Luzon, F, Univ Almeria, Dept Fis Aplicada, Canada San Urbano S-N, Almeria 04120, Spain. EM fluzon@ual.es NR 27 TC 4 PU BLACKWELL PUBLISHING LTD PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND SN 0956-540X J9 GEOPHYS J INT JI Geophys. J. Int. PD MAR PY 2004 VL 156 IS 3 BP 584 EP 594 DI 10.1111/j.1365-246X.2004.02142.x PG 11 SC Geochemistry & Geophysics GA 777VM UT ISI:000189201000016 ER PT J AU Odriozola, G Leone, R Moncho-Jorda, A Schmitt, A Hidalgo-Alvarez, R TI Coupled aggregation and sedimentation processes: stochastic mean field theory SO PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS LA English DT Article DE aggregation-sedimentation processes; master equation; stochastic resolution ID COLLOIDAL AGGREGATION; CHEMICAL-REACTIONS; SIMULATIONS; TRANSITION; KINETICS; DLCA; RLCA AB In this paper, we present a stochastic model for obtaining the time evolution of the cluster size distribution for systems following coupled aggregation and sedimentation processes. Both, diffusion-limited cluster aggregation conditions and reaction limited cluster aggregation conditions are studied under the effect of sedimentation. For this purpose, the master equation is adapted for considering several slices where cluster aggregation and mass transport through the boundaries are taken into account. Furthermore, the kernel needed to solve the stochastic equation is adapted for considering the sticking probability, P, and the Peclet number, Pe, as parameters. The obtained solutions are then compared with the time evolution of the cluster size distribution obtained by means of computer simulations in Leone et at. (Eur. Phys. J. E 7 (2002) 105), Odriozola et al. (Phys. Rev. E (2003) 031405). (C) 2003 Elsevier B.V. All rights reserved. C1 Inst Mexicano Petr, Programa Ingn Mol, Mexico City 07730, DF, Mexico. Univ Republica, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. Univ Granada, Dept Fis Aplicada, E-18071 Granada, Spain. RP Odriozola, G, Inst Mexicano Petr, Programa Ingn Mol, Lazaro Cardenas 152, Mexico City 07730, DF, Mexico. EM godriozo@imp.mx NR 25 TC 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4371 J9 PHYSICA A JI Physica A PD APR 1 PY 2004 VL 335 IS 1-2 BP 35 EP 46 DI 10.1016/j.physa.2003.12.011 PG 12 SC Physics, Multidisciplinary GA 777ZX UT ISI:000189215600003 ER PT J AU Sanchez-Quevedo, MC Ceballos, G Garcia, JM Luna, JD Rodriguez, IA Campos, A TI Dentine structure and mineralization in hypocalcified amelogenesis imperfecta: a quantitative X-ray histochemical study SO ORAL DISEASES LA English DT Article DE tooth calcification; dentine; enamel; amelogenesis imperfecta ID ELECTRON-PROBE MICROANALYSIS; ENAMEL ULTRASTRUCTURE; SCLEROTIC DENTIN; CALCIFICATION; MEMBRANE; INCISOR AB OBJECTIVE: This study was undertaken in order to establish the structural and mineralization pattern of the response of dentine to alterations in enamel in hypocalcified amelogenesis imperfecta (AI). DESIGN: The images and data obtained with scanning electron microscopy and electron probe X-ray microanalysis in enamel and dentine specimens from control and affected teeth were compared in this study. PATIENTS AND METHODS: We compared 46 fragments of permanent teeth from patients with clinically diagnosed hypocalcified AI and 20 normal permanent teeth. All specimens were prepared for electron probe X-ray microanalysis. RESULTS: Dentine is characterized by thickening of the peritubular dentine and partial obliteration of the dentinal tubules that does not give rise to a compact sclerotic cast. In dentine, calcium levels were significantly higher in teeth with clinically hypocalcified AI in relation with control teeth (P < 0.001). CONCLUSIONS: Dentine is affected in hypocalcified AI increasing mineralization (narrower tubules and higher content of calcium) in response to enamel disorder. C1 Univ Granada, Fac Med & Odontol, Dept Histol, Granada, Spain. Univ Granada, Hosp Clin Univ, Dept Estomatol, Granada, Spain. Univ Granada, Fac Med, Dept Bioestadist, Granada, Spain. Univ Nacl Cordoba, Fac Odontol, Catedra Histol & Embriol B, RA-5000 Cordoba, Argentina. RP Sanchez-Quevedo, MC, Univ Granada, Fac Med, Dept Histol, E-18071 Granada, Spain. EM mcsanchez@histolii.ugr.es NR 37 TC 5 PU BLACKWELL MUNKSGAARD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 1354-523X J9 ORAL DIS JI Oral Dis. PD MAR PY 2004 VL 10 IS 2 BP 94 EP 98 PG 5 SC Dentistry, Oral Surgery & Medicine GA 779WA UT ISI:000189323700005 ER PT J AU Contreras-Jurado, C Gonzalez-Martinez, MT Cobos, EJ Soler-Diaz, A TI Fluorometric evidence for different stoichiometries for the Na+/Mg2+ exchange in Mg-loaded rat thymocytes SO FRONTIERS IN BIOSCIENCE LA English DT Article DE intracellular magnesium; Na/Mg exchange; mag fura 2; membrane potential; thymocytes ID MAGNESIUM; CELLS; EFFLUX; NA+ AB The regulation of the cytosolic free magnesium concentration ([Mg2+](i)) is a fundamental cellular process that requires magnesium extruding mechanisms. Here, we present evidence indicating that rat thymocytes are endowed with different Na/Mg exchange systems. Fluxes of magnesium were measured using the fluorescent magnesium indicator magfura-2. Cells were loaded with magnesium using the calcium ionophore A-23187 to 0.6-8.0 mM [Mg2+](i) (resting [Mg2+](i) = 0.38 = 0.06 mM, n = 5). The presence of extracellular sodium was required for magnesium exit. The initial rate of [Mg2+](i) was stimulated by extracellular sodium with Michaelis-Menten kinetics. The Vmax of the sodium-dependent magnesium exit was markedly increased by [Mg2+](i). Holding the membrane potential at either -84 mV or at -10 mV had different effects on the sodium-stimulated magnesium efflux, depending on the extracellular sodium concentration ([Na+](o)). At 10-30 mM [Na+](o), the magnesium efflux was faster at - 10 mV than at -84 mV. Conversely, at 50-200 mM [Na+](o), the efflux of magnesium was faster at -84 mV that at -10 mV. At 75 mM [Na+](o), the activities where nearly the same at both membrane potential values. These observations suggest that the stochiometry of the Na+/Mg2+ exchange changes with [Na+](o). C1 Univ Granada, Fac Med, Dept Fisiol, E-18012 Granada, Spain. Univ Nacl Autonoma Mexico, Fac Med, Dept Farmacol, Mexico City 04510, DF, Mexico. Univ Granada, Fac Med, Dept Farmacol, E-18012 Granada, Spain. Univ Granada, Inst Biotecnol, E-18012 Granada, Spain. RP Soler-Diaz, A, Univ Granada, Fac Med, Dept Fisiol, Avda Madrid 13, E-18012 Granada, Spain. EM agasoler@ugr.es NR 13 TC 2 PU FRONTIERS IN BIOSCIENCE INC PI MANHASSET PA C/O NORTH SHORE UNIV HOSPITAL, BIOMEDICAL RESEARCH CENTER, 350 COMMUNITY DR, MANHASSET, NY 11030 USA SN 1093-9946 J9 FRONT BIOSCI JI Front. Biosci. PD MAY PY 2004 VL 9 BP 1843 EP 1848 PG 6 SC Biochemistry & Molecular Biology; Cell Biology GA 779ZA UT ISI:000189333700067 ER PT J AU Ortiz, JJ Requena, I TI Using a multi-state recurrent neural network to optimize loading patterns in BWRs SO ANNALS OF NUCLEAR ENERGY LA English DT Article DE loading patterns; nuclear BWRs; neural networks; multi-state recurrent neural network ID CORE FUEL-MANAGEMENT; GENETIC ALGORITHMS; WATER-REACTOR; DESIGN; SYSTEM AB A Multi-State Recurrent Neural Network is used to optimize Loading Patterns (LP) in BWRs. We have proposed an energy function that depends on fuel assembly positions and their nuclear cross sections to carry out optimisation. Multi-State Recurrent Neural Networks creates LPs that satisfy the Radial Power Peaking Factor and maximize the effective multiplication factor at the Beginning of the Cycle, and also satisfy the Minimum Critical Power Ratio and Maximum Linear Heat Generation Rate at the End of the Cycle, thereby maximizing the effective multiplication factor. In order to evaluate the LPs, we have used a trained back-propagation neural network to predict the parameter values, instead of using a reactor core simulator, which saved considerable computation time in the search process. We applied this method to find optimal LPs for five cycles of Laguna Verde Nuclear Power Plant (LVNPP) in Mexico. (C) 2003 Elsevier Ltd. All rights reserved. C1 ININ, Dept Sistemas Nucl, Mexico City, DF, Mexico. Univ Granada, Dept Ciencias Comp IA ETSII Informat, E-18071 Granada, Spain. RP Ortiz, JJ, ININ, Dept Sistemas Nucl, Carr Mexico Toluca Km 36-5, Mexico City, DF, Mexico. EM jjortiz@nuclear.inin.mx requena@decsai.ugr.es NR 21 TC 8 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0306-4549 J9 ANN NUCL ENERG JI Ann. Nucl. Energy PD MAY PY 2004 VL 31 IS 7 BP 789 EP 803 DI 10.1016/j.anucene.2003.11.001 PG 15 SC Nuclear Science & Technology GA 803AK UT ISI:000220203800006 ER PT J AU Ceballos-Salobrena, A Gaitain-Cepeda, L Ceballos-Garcia, L Samaranayake, LP TI The effect of antiretroviral therapy on the prevalence of HIV-associated oral candidiasis in a Spanish cohort SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS LA English DT Article ID HUMAN-IMMUNODEFICIENCY-VIRUS; KAPOSIS-SARCOMA; OPPORTUNISTIC INFECTIONS; PROTEASE INHIBITOR; AIDS; MANIFESTATIONS; ERA; CANDIDOSIS; LONDON; HAART AB Objective. To investigate the temporal changes in the prevalence of oral candidiasis in a cohort of Spanish human immunodeficiency virus (HIV)-infected individuals, before and after the introduction of highly active antiretroviral therapy (HAART). Study design. Retrospective analysis of a clinical database from "Carlos Haya" Hospital, Malaga, Spain, from 1995 to 2000. The prevalence of oral candidiasis was assessed in 807 HIV/AIDS patients and the temporal progression of its major variants evaluated using a linear regression model. Results. Overall oral candidiasis was prevalent in 30.0% to 48.3% of the cohort throughout and no significant variation in its incidence was noted during the study period. Prevalence of erythematous candidiasis increased from 24.5% (1995) to 45.0% (2000) and pseudomembranous candidiasis decreased from 22.4% (1995) to 5.2% (2000) (P < .05). Hyperplastic candidiasis was not detected in the cohort after the introduction of HAART therapy. Conclusions. Although oral candidiasis in HIV-infected Spanish individuals has not decreased significantly after the introduction of HAART, there appears to be a significant reduction in hyperplastic and pseudomembranous variants of the disease with a compensatory increase in erythematous candidiasis. C1 Natl Autonomous Univ Mexico, Fac Dent, Oral Pathol Lab, Mexico City, DF, Mexico. Univ Granada, Fac Dent, Dept Oral Med, Granada, Spain. Univ Hong Kong, Fac Dent, Hong Kong, Hong Kong, Peoples R China. RP Gaitain-Cepeda, L, Natl Autonomous Univ Mexico, Fac Odontol, Lab Patol Clin & Expt, Div Estudios Postgrado & Invest, Circuito Inst S-N,Ciudad Univ Del Coyoacan, Mexico City 04510, DF, Mexico. EM lgaitan@servidor.unam.mx NR 22 TC 2 PU MOSBY, INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 USA SN 1079-2104 J9 ORAL SURG ORAL MED ORAL PATHO JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD MAR PY 2004 VL 97 IS 3 BP 345 EP 350 PG 6 SC Dentistry, Oral Surgery & Medicine GA 803NO UT ISI:000220238000014 ER PT J AU Zulantay, I Honores, P Solari, A Apt, W Ortiz, S Osuna, A Rojas, A Lopez, B Sanchez, G TI Use of polymerase chain reaction (PCR) and hybridization assays to detect Trypanosoma cruzi in chronic chagasic patients treated with itraconazole or allopurinol SO DIAGNOSTIC MICROBIOLOGY AND INFECTIOUS DISEASE LA English DT Article DE chronic Chagas disease; Trypanosoma cruzi; polymerase chain reaction (PCR); hybridization assays; itraconazole; allopurinol ID BLOOD-SAMPLES; KINETOPLAST DNA; FOLLOW-UP; DIAGNOSIS; DISEASE; AMPLIFICATION; CLASSIFICATION; XENODIAGNOSIS; SEQUENCES; BRAZIL AB The presence of Trypanosoma cruzi in chronic chagasic patients with negative xenodiagnosis (XD) after 6 years following completion of therapy with either itraconazole or allopurinol was assessed by polymerase chain reaction (PCR) and hybridization assays. A 330-bp DNA fragment amplified from the hypervariable regions of T. cruzi kinetoplastid minicircles was hybridized with total P-32-labeled kinetoplast DNA as probes. PCR alone enabled the identification of T. cruzi nucleotide sequences in 40% of the patients treated with itraconazole and in 60% of patients treated with allopurinol. PCR used in combination with hybridization detected parasite DNA in 60% and 53% of XD negative individuals treated with itraconazole or allopurinol, respectively. These results show that PCR and hybridization are more sensitive than conventional parasitological techniques in diagnosing patients that have undergone chemotherapy with itraconazole or allopurinol. (C) 2004 Elsevier Inc. All rights reserved. C1 Univ Chile, Fac Med, Inst Biomed Sci, Cellular & Mol Biol Program, Santiago, Chile. Univ Granada, Fac Sci, Dept Parasitol, Inst Biotechnol, Granada, Spain. RP Zulantay, I, Univ Chile, Fac Med, Inst Biomed Sci, Cellular & Mol Biol Program, Santiago, Chile. EM izulanta@machi.med.uchile.cl NR 17 TC 11 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0732-8893 J9 DIAGN MICROBIOL INFECT DIS JI Diagn. Microbiol. Infect. Dis. PD APR PY 2004 VL 48 IS 4 BP 253 EP 257 DI 10.1016/j.diagmicrobio.2003.10.011 PG 5 SC Infectious Diseases; Microbiology GA 813KZ UT ISI:000220907300005 ER PT J AU Schneider, J Bosch, D Monie, P Guillot, S Garcia-Casco, A Lardeaux, JM Torres-Roldan, RL Trujillo, GM TI Origin and evolution of the Escambray Massif (Central Cuba): an example of HP/LT rocks exhumed during intraoceanic subduction SO JOURNAL OF METAMORPHIC GEOLOGY LA English DT Article DE Cuba; exhumation; HP/LT rocks; Rb/Sr-Ar/Ar geochronology ID ARC MAGMA GENESIS; CARIBBEAN PLATE; ISLAND-ARC; ISOTOPIC CONSTRAINTS; COLLISIONAL OROGENS; TECTONIC EVOLUTION; WESTERN CUBA; RB-SR; EXHUMATION; ECLOGITES AB High-pressure (HP) metabasites from the Sancti Spiritus dome (Escambray massif, Central Cuba) have been studied in order to better understand the origin and evolution of the Northern Caribbean boundary plate during the Cretaceous, in a global subduction context. Geochemical and petrological studies of these eclogites reveal two groups with contrasting origins and pre-subduction metamorphic histories. Eclogites collected from exotic blocks within serpentinite (melange zone) originated from a N-MORB type protolith, do not record pre-eclogitic metamorphic history. Conversely eclogites intercalated in Jurassic metasedimentary rocks (non-melange zone) have a calc-alkaline arc-like origin and yield evidence for a pre-subduction metamorphic event in the amphibolite facies. However, all the studied Escambray eclogites underwent the same eclogitic peak (around 600 degreesC at 16 kbar), and followed a cold thermal gradient during their exhumation (estimated at around 13.5 degreesC km(-1)), which can suggest that this exhumation was coeval with subduction. Concordant geochronological data (Rb/Sr and Ar/Ar) support that the main exhumation of HP/LT rocks from the Sancti Spiritus dome occurred at 70 Ma by top to SW thrusting. The retrograde trajectory of these rocks suggests that the north-east subduction of the Farallon plate continued after 70 Ma. The set-off to the exhumation can be correlated with the beginning of the collision between the Bahamas platform and the Cretaceous island arc that induced a change of the subduction kinematics. The contrasting origin and ante-subduction history of the analysed samples imply that the Escambray massif consists of different geological units that evolved in different environments before their amalgamation during exhumation to form the present unit III of the massif. C1 Univ Montpellier 2, CNRS, UMR 5568, Lab Tectonophys, F-34095 Montpellier, France. Univ Montpellier 2, CNRS, UMR 5573, Lab Dynam Lithosphere, F-34095 Montpellier, France. Univ Lyon 1, CNRS, UMR 5570, Lab Dynam Lithosphere, F-69622 Villeurbanne, France. ENS Lyon, F-69622 Villeurbanne, France. Univ Granada, Dept Mineral & Petrol, Granada 18002, Spain. Univ Nice, CNRS, UMR 6526, F-06103 Nice 2, France. Inst Geol & Palaeontol, Havana, Cuba. RP Schneider, J, Univ Montpellier 2, CNRS, UMR 5568, Lab Tectonophys, Pl E Bataillon, F-34095 Montpellier, France. EM schneider@dstu.univ-montp2.fr NR 85 TC 7 PU BLACKWELL PUBLISHING LTD PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND SN 0263-4929 J9 J METAMORPH GEOL JI J. Metamorph. Geol. PD APR PY 2004 VL 22 IS 3 BP 227 EP 247 DI 10.1111/j.1525-1314.2004.00510.x PG 21 SC Geology GA 815RL UT ISI:000221059300006 ER PT J AU Di Stasi, LC Camuesco, D Nieto, A Vilegas, W Zarzuelo, A Galvez, J TI Intestinal anti-inflammatory activity of paepalantine, an isocoumarin isolated from the capitula of Paepalanthus bromelioides, in the trinitrobenzenesulphonic acid model of rat colitis SO PLANTA MEDICA DT Article DE paepalantine; isocoumarin; capitula of Paepalanthus bromelioides; eriocaulaceae; antioxidant activity; rat colitis; TNBS ID INFLAMMATORY-BOWEL-DISEASE; INHIBITION AB The preventative intestinal anti-inflammatory activity of paepalantine, an isocoumarin isolated from the capitula of Paepalarithus bromelioides, was tested in the trinitrobenzenesulphonic acid (TNBS) model of rat colitis. This was performed in two different experimental settings, i. e. when the colonic mucosa is intact or when the mucosa is in process of recovery after an initial insult. The results obtained revealed that the paepalantine pretreatment, at doses of 5 and 10 mg/kg, significantly attenuated the colonic damage induced by TNBS in both situations, as it was evidenced both histologically and biochemically. This beneficial effect was associated with an improvement in the colonic oxidative status, since paepalantine prevented the glutathione depletion that occurred as a consequence of the colonic inflammation. In addition, the intestinal anti-inflammatory effect exerted by this isocoumarin was associated with an inhibition of colonic nitric oxide activity, which is upregulated as a consequence of the inflammatory process. In conclusion, the preventative effect exerted by paepalantine in the TNBS model of rat colitis is probably related with its antioxidant properties. C1 Univ Granada, Sch Pharm, Dept Pharmacol, Granada 18071, Spain. Univ Estadual Paulista Julio Mesquita Filho, IB, Dept Pharmacol, Botucatu, SP, Brazil. Univ Complutense Madrid, Sch Vet, Dept Anim Med & Surg, Madrid, Spain. UNESP, IQ, Inst Chem, Araraquara, SP, Brazil. RP Galvez, J, Univ Granada, Sch Pharm, Dept Pharmacol, Granada 18071, Spain. EM jgalvez@ugr.es NR 18 TC 2 PU GEORG THIEME VERLAG KG PI STUTTGART PA RUDIGERSTR 14, D-70469 STUTTGART, GERMANY SN 0032-0943 J9 PLANTA MED JI Planta Med. PD APR PY 2004 VL 70 IS 4 BP 315 EP 320 DI 10.1055/s-2004-818942 PG 6 SC Plant Sciences; Chemistry, Medicinal; Pharmacology & Pharmacy GA 818ES UT ISI:000221229000006 ER PT J AU Sierra, JC Ortega, V Martin-Ortiz, JD Vera-Villarroel, P TI Psychometric properties of Wilson's Sex Fantasy Questionnaire SO REVISTA MEXICANA DE PSICOLOGIA LA Spanish DT Article DE reliability; validity; Wilson's Sex Fantasy Questionnaire; sex fantasies; sexual behavior ID WOMENS FANTASIES; MULTIDIMENSIONALITY; INTERCOURSE; SEXUALITY; AROUSAL; MEN AB Sex fantasies play an important role in human sexuality, making clear the need to assess instruments 0 with enough psychometric guarantees. Reliability and validity of Wilson's Sex Fantasy Questionnaire were assessed in a Spanish population. The scale includes four fantasy factors: exploratory, intimate,, impersonal, and sadomasoquistic, and was administered, along with LoPiccolo and Steger's Sexual Interaction Inventory, to a sample of 460 subject's (370 women and 90 men). The internal consistency analysis provided a Cronbach's 0 alpha of .90 for the total scale; values for the four subscales ranged from .66 to .79, the impersonal sex fantasy category showing the smallest homogeneity. Factor analysis only partially supported the scale's original structure and identified impersonal and sadomasoquistic factors as problematic. Nevertheless, the scale showed an adequate convergent validity with the scores in desired sexual behavior obtained with LoPiccolo and Steger's inventory, and significant differences were shown in the type of sex fantasies between men and women and between individuals with or without a partner. Findings indicate this is a useful instrument to study human sexuality. C1 Univ Granada, Granada, Spain. Univ Santiago Chile, Santiago, Chile. RP Sierra, JC, Univ Granada, Granada, Spain. EM jcsierra@ugr.es NR 33 TC 5 PU SOCIEDAD MEXICANA PSICOLOGIA PI TLALPAN PA APARTADO POSTAL 22-211, TLALPAN 14000, MEXICO SN 0185-6073 J9 REV MEX PSICOL JI Rev. Mex. Psicol. PD JUN PY 2004 VL 21 IS 1 BP 37 EP 50 PG 14 SC Psychology, Multidisciplinary GA 826CT UT ISI:000221807300004 ER PT J AU Villasenor, AB Oloriz, F Lopez-Palomino, I TI Inner whorls of Gregoryceras (Ammonitina, Peltoceratinae) as the first occurrence of the genus in Mexico SO RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA LA English DT Article DE ammonites; Gregoryceras; Upper Jurassic; Oxfordian; Mexico ID BASIN; NORTH; GULF AB Two nuclei of Gregoryceras are described as the first record of the genus in Mexico. The occurrence in Mexico of the ubiquitous Tethyan genus Gregoryceras is interpreted as related to a major flooding episode that affected neritic shelves in the southern North-American plate. C1 Univ Nacl Autonoma Mexico, Dept Paleontol, Inst Geol, Mexico City 04510, DF, Mexico. Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada, Spain. RP Villasenor, AB, Univ Nacl Autonoma Mexico, Dept Paleontol, Inst Geol, Ciudad Univ, Mexico City 04510, DF, Mexico. EM anab@servidor.unam.mx nicteha73@yahoo.com.mx foloriz@ugr.es NR 44 TC 2 PU UNIV STUDI MILANO PI MILANO PA C/O RIVISTA ITALIANA PALEONTOLOGIA STRATIGRAFIA, VIA MANGIAGALLI, 34, 20133 MILANO, ITALY SN 0035-6883 J9 RIV ITAL PALEONTOL STRATIGR JI Riv. Ital. Paleontol. Stratigr. PD APR PY 2004 VL 110 IS 1 BP 249 EP 254 PG 6 SC Geology; Paleontology GA 829NU UT ISI:000222056600027 ER PT J AU Ferreira, SLC dos Santos, WNL Quintella, CM Neto, BB Bosque-Sendra, JA TI Doehlert matrix: a chemometric tool for analytical chemistry - review SO TALANTA DT Article DE chemometric; Doehlert matrix; review ID ATOMIC-ABSORPTION-SPECTROMETRY; ONLINE PRECONCENTRATION SYSTEM; ELECTROKINETIC CAPILLARY CHROMATOGRAPHY; EXPERIMENTAL-DESIGN OPTIMIZATION; SOLID-PHASE SPECTROPHOTOMETRY; OPTICAL-EMISSION SPECTROMETRY; HIGH-SHEAR MIXER; EXPERIMENTAL-VARIABLES; MULTIVARIATE OPTIMIZATION; FACTORIAL-DESIGNS AB A review of the use of the Doehlert matrix as a chemometric tool for the optimization of methods in analytical chemistry and other sciences is presented. The theoretical principles of Doehlert designs are described, including the coded values for the use of this matrix involving two, three, four and five variables. The advantages of this matrix in comparison with other response surface designs, such as central composite and Box-Behnken, designs are discussed. Finally, 57 references concerning the application of Doehlert matrices in the optimization of procedures involving spectroanalytical, electroanalytical and chromatographic techniques are considered. (C) 2004 Elsevier B.V. All rights reserved. C1 Univ Fed Bahia, Inst Quim, BR-40170290 Salvador, BA, Brazil. Univ Fed Pernambuco, Dept Quim Fundamental, BR-50740540 Recife, PE, Brazil. Univ Granada, Fac Sci, Dept Analyt Chem, E-18071 Granada, Spain. RP Ferreira, SLC, Univ Fed Bahia, Inst Quim, BR-40170290 Salvador, BA, Brazil. EM slcf@ufba.br NR 62 TC 76 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-9140 J9 TALANTA JI Talanta PD JUL 8 PY 2004 VL 63 IS 4 BP 1061 EP 1067 DI 10.1016/j.talanta.2004.01.015 PG 7 SC Chemistry, Analytical GA 829QB UT ISI:000222063600031 ER PT J AU Fuentes, V Ceballos, L Osorio, R Toledano, M Carvalho, RM Pashley, DH TI Tensile strength and microhardness of treated human dentin SO DENTAL MATERIALS DT Article DE dentin; tensile strength; microhardness; microtensile ID SODIUM-HYPOCHLORITE TREATMENT; SHEAR BOND STRENGTH; DEMINERALIZED HUMAN; DIMENSIONAL CHANGES; BOVINE DENTIN; ETCHED DENTIN; IN-VITRO; HARDNESS; COLLAGEN; ADHESIVE AB Objectives. To determine the ultimate tensile strength and Knoop hardness of mineralized, EDTA-treated, sodium hypochlorite (NaOCl)-treated, EDTA-treated resin-infiltrated, and NaOCL-treated resin-infiltrated dentin. Methods. Dumbell-shaped specimens with a cross-sectional area of 0.5 mm(2) were prepared from the crowns of extracted human third molars. Specimens were randomly assigned to the following experimental groups: (1) mineralized dentin; (2) 0.5 M EDTA-demineralized dentin, pH 7/5 days; (3) 5% NaOCl-deproteinized dentin/2 days; (4) EDTA-treated, Single Bond resin-infiltrated dentin; (5) NaOCl-treated, Single Bond resin-infiltrated dentin. All specimens were tested in tension in a Vitrodyne testing machine at 0.6 mm/min. Knoop microhardness was measured on the fractured edges of specimens in groups 1, 3, 4, and 5. Results were analyzed by ANOVA and SNK tests (p < 0.05). Results. Both EDTA and NaOCl treatments caused significant reductions in the tensile strength and microhardness of mineralized dentin (p < 0.05), with the largest reductions observed after NaOCl treatment (p < 0.05). Resin infiltration of treated dentin resulted in moderate increase of its tensile strength and microhardness, however, the original mineralized values were not recovered (p < 0.05). Significance. Whenever dentin surfaces are treated with EDTA or NaOCl prior to a clinical bonding procedure, clinicians must be aware that a weak layer may be present at the interface, which may lead to premature failures of resin/dentin bonds. (C) 2003 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved. C1 Univ Sao Paulo, Dept Operat Dent Endodont & Dent Mat, Bauru Sch Dent, Sao Paulo, Brazil. Med Coll Georgia, Dept Oral Biol & Maxillofacial Pathol, Sch Dent, Augusta, GA 30912 USA. Univ Granada, Dept Dent Mat, Sch Dent, Granada, Spain. RP Carvalho, RM, Univ Sao Paulo, Dept Operat Dent Endodont & Dent Mat, Bauru Sch Dent, Sao Paulo, Brazil. EM ricfob@fob.usp.br NR 39 TC 7 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0109-5641 J9 DENT MATER JI Dent. Mater. PD JUL PY 2004 VL 20 IS 6 BP 522 EP 529 DI 10.1016/j.dental.2003.05.005 PG 8 SC Dentistry, Oral Surgery & Medicine; Materials Science, Biomaterials GA 830NC UT ISI:000222128100002 ER PT J AU Schmitt, DP Diniz, G Alcalay, L Durkin, K Allensworth, M Echegaray, M Allik, J Eremsoy, E Ault, L Euler, HA Austers, I Falzon, R Bennett, KL Fisher, ML Bianchi, G Foley, D Boholst, F Fowler, R Cunen, MAB Fry, DP Braeckman, J Fry, S Brainerd, EG Ghayur, MA Caral, LGA Giri, VN Caron, G Golden, DL Casullo, MM Grammer, K Cunningham, M Grimaldi, L Daibo, I Halberstadt, J De Backer, C Haque, S De Souza, E Herrera, D Diaz-Loving, R Hertel, J Luksik, I Hitchell, A Magaisa, I Hoffmann, H Marcinkeviciene, D Hooper, D Mata, A Hradilekova, Z Mata, R Hudek-Kene-Evi, J McCarthy, B Huffcutt, A Mills, ME Jaafar, J Mkhize, NJ Jankauskaite, M Moreira, J Kabangu-Stahel, H Moreira, S Kardum, I Moya, M Khoury, B Munyae, M Kwon, H Noller, P Laidra, K Olimat, H Laireiter, AR Opre, A Lakerveld, D Panayiotou, A Lampert, A Petrovic, N Lauri, M Poels, K Lavallee, M Popper, M Lee, SJ Poulimenou, M Leung, LC P'Yatokha, V Locke, KD Raymond, M Locke, V Reips, UD Reneau, SE Sumer, HC Sumer, N Rivera-Aragon, S Supekova, M Rowatt, WC Szlendak, T Ruch, W Taylor, R Rus, VS Timmermans, B Safir, MP Tooke, W Salas, S Tsaousis, I Sambataro, F Tungaraza, FSK Sandnabba, KN Turner, A Schleeter, R Vandermassen, G Schulmeyer, MK Vanhoomissen, T Van Overwalle, F Schutz, A Vanwesenbeeck, I Scrimali, T Vasey, PL Shackelford, TK Verissimo, J Sharan, MB Voracek, M Shaver, PR Wan, WWN Sichona, F Wang, TW Simonetti, F Weiss, P Sineshaw, T Wijaya, A Sookdew, R Woertman, L Speelman, T Youn, G Spyrou, S Zupaneie, A TI Patterns and universals of adult romantic attachment across 62 cultural regions - Are models of self and of other pancultural constructs? SO JOURNAL OF CROSS-CULTURAL PSYCHOLOGY LA English DT Article DE romantic attachment; culture; internal working models; human mating strategies ID WORKING MODELS; UNITED-STATES; PERSONALITY; ORGANIZATION; STYLES; LOVE; PERSPECTIVE; DIMENSIONS; STABILITY; VIOLENCE AB As part of the International Sexuality Description Project, a total of 17,804 participants from 62 cultural regions completed the Relationship Questionnaire (RQ), a self-report measure of adult romantic attachment. Correlational analyses within each culture suggested that the Model of Self and the Model of other scales of the RQ were psychometrically valid within most cultures. Contrary to expectations, the Model of Self and Model of Other dimensions of the RQ did not underlie the four-category model of attachment in the same way across all cultures. Analyses of specific attachment styles revealed that secure romantic attachment was normative in 79% of cultures and that preoccupied romantic attachment was particularly prevalent in East Asian cultures. Finally, the romantic attachment profiles of individual nations were correlated with sociocultural indicators in ways that supported evolutionary theories of romantic attachment and basic human mating strategies. C1 Bradley Univ, Dept Psychol, Peoria, IL 61625 USA. Univ Ljubljana, Ljubljana, Slovenia. Chonnam Natl Univ, Cheongju, South Korea. Univ Utrecht, Utrecht, Netherlands. Couple Clin Indonesia, Surabaya, Indonesia. Charles Univ, CR-11636 Prague 1, Czech Republic. Yuan Ze Univ, Tao Yuan, Taiwan. Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China. Univ Vienna, Sch Med, Vienna, Austria. Univ Lisbon, P-1699 Lisbon, Portugal. Univ Lethbridge, Lethbridge, AB T1K 3M4, Canada. Free Univ Brussels, Brussels, Belgium. State Univ Ghent, B-9000 Ghent, Belgium. Bradley Univ, Peoria, IL 61625 USA. Univ Dar Es Salaam, Dar Es Salaam, Tanzania. Univ Aegean, Mytilili, Greece. SUNY Coll Plattsburgh, Plattsburgh, NY 12901 USA. Free Univ Brussels, B-1050 Brussels, Belgium. Univ S Pacific, Suva, Fiji. Nicholas Copernicus Univ, Krakow, Poland. Middle E Tech Univ, Ankara, Turkey. State Univ Ghent, B-9000 Ghent, Belgium. Univ Natal, Natal, RN, Brazil. Ramapo Coll, Mahwah, NJ USA. Pontificia Univ Catolica Chile, Santiago, Chile. Univ Calif Davis, Davis, CA 95616 USA. Indian Inst Technol, Kharagpur 721302, W Bengal, India. Florida Atlantic Univ, Boca Raton, FL 33431 USA. Univ Catania, Catania, Italy. Tech Univ Chemnitz, Chemnitz, Germany. Abo Akad Univ, Turku, Finland. Univ La Serena, La Serena, Chile. Univ Haifa, IL-31999 Haifa, Israel. Univ Ljubljana, Ljubljana 61000, Slovenia. Queens Univ Belfast, Belfast, Antrim, North Ireland. Baylor Univ, Waco, TX 76798 USA. Natl Autonomous Univ Mexico, Mexico City 04510, DF, Mexico. Univ Alabama, Tuscaloosa, AL 35487 USA. Univ Zurich, CH-8006 Zurich, Switzerland. Univ Montpellier 2, Montpellier, France. Slovak Acad Sci, Bratislava, Slovakia. Univ Belgrade, Belgrade, Yugoslavia. Univ Cyprus, Nicosia, Cyprus. Univ Babes Bolyai, R-3400 Cluj Napoca, Romania. Univ Jordan, Irbid, Jordan. Univ Queensland, St Lucia, Qld 4067, Australia. Univ Botswana, Gaborone, Botswana. Univ Granada, E-18071 Granada, Spain. Univ Lisbon, P-1699 Lisbon, Portugal. Univ Natal, Durban, South Africa. Loyola Marymount Univ, Los Angeles, CA 90045 USA. Univ Cent Lancashire, Preston PR1 2HE, Lancs, England. Vilnius State Univ, Vilnius, Lithuania. Univ Zimbabwe, Harare, Zimbabwe. Slovak Acad Sci, Bratislava, Slovakia. Univ Western Australia, Nedlands, WA 6009, Australia. Univ Idaho, Moscow, ID 83843 USA. City Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China. Univ Laval, Quebec City, PQ G1K 7P4, Canada. Univ Malta, Msida, Malta. Ruppin Inst, Post, Israel. Univ Utrecht, NL-3508 TC Utrecht, Netherlands. Salzburg Univ, Inst Psychol, A-5020 Salzburg, Austria. Univ Tartu, EE-50090 Tartu, Estonia. Amer Univ Beirut, Beirut, Lebanon. Univ Rijeka, Rijeka, Croatia. Univ Malaya, Kuala Lumpur 59100, Malaysia. Bradley Univ, Peoria, IL 61625 USA. Comenius Univ, Bratislava 81806, Slovakia. Univ Queensland, St Lucia, Qld 4067, Australia. Knox Coll, Galesburg, IL USA. Bradley Univ, Peoria, IL 61625 USA. Tech Univ, Chemnitz, Germany. Univ Lima, Lima, Peru. Univ Dhaka, Dhaka 1000, Bangladesh. Univ Otago, Dunedin, New Zealand. Univ Catania, Catania, Italy. Univ Hawaii Manoa, Honolulu, HI 96822 USA. Indian Inst Technol, Kharagpur 721302, W Bengal, India. Ludwig Boltzmann Inst Urban Ethol, Ifrane, Austria. Abo Akad Univ, Turku, Finland. Univ Queensland, St Lucia, Qld 4067, Australia. York Univ, N York, ON M3J 1P3, Canada. Bogazici Univ, TR-80815 Bebek, Turkey. Univ Lima, Lima, Peru. Univ Western Australia, Nedlands, WA 6009, Australia. Univ Brasilia, BR-70910900 Brasilia, DF, Brazil. Natl Autonomous Univ Mexico, Mexico City 04510, DF, Mexico. Illinois State Univ, Normal, IL 61761 USA. Osaka Univ, Suita, Osaka 565, Japan. Univ Louisville, Louisville, KY 40292 USA. Univ Buenos Aires, RA-1053 Buenos Aires, DF, Argentina. Univ San Carlos, San Carlos, Philippines. Clemson Univ, Clemson, SC 29631 USA. Univ New Mexico, Albuquerque, NM 87131 USA. Latvian State Univ, Riga, Latvia. Univ Louisville, Louisville, KY 40292 USA. Univ Tartu, Tartu, Estonia. RP Schmitt, DP, Bradley Univ, Dept Psychol, 105 Comstock Hall, Peoria, IL 61625 USA. EM dps@bradley.edu NR 100 TC 12 PU SAGE PUBLICATIONS INC PI THOUSAND OAKS PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA SN 0022-0221 J9 J CROSS-CULT PSYCHOL JI J. Cross-Cult. Psychol. PD JUL PY 2004 VL 35 IS 4 BP 367 EP 402 DI 10.1177/0022022104266105 PG 36 SC Psychology, Social GA 831KL UT ISI:000222193200001 ER PT J AU Guerra, RO Gutierrez, CV TI Cognitive impairment is the main predictor of functional status in a geriatric institutionalized population SO INTERNATIONAL PSYCHOGERIATRICS DT Meeting Abstract C1 Univ Fed Rio Grande Norte, Dept Physiotherapy, BR-59072970 Natal, RN, Brazil. Univ Granada, E-18071 Granada, Spain. NR 0 TC 0 PU SPRINGER PUBLISHING CO PI NEW YORK PA 536 BROADWAY, NEW YORK, NY 10012 USA SN 1041-6102 J9 INT PSYCHOGERIATR JI Int. Psychogeriatr. PY 2003 VL 15 SU Suppl. 2 BP 335 EP 336 PG 2 SC Psychology, Clinical; Geriatrics & Gerontology; Gerontology; Psychiatry; Psychology GA 831QJ UT ISI:000222209400762 ER PT J AU Machado-Silveiro, LF Gonzalez-Lopez, S Gonzalez-Rodriguez, MP TI Decalcification of root canal dentine by citric acid, EDTA and sodium citrate SO INTERNATIONAL ENDODONTIC JOURNAL DT Article DE decalcifying agents; root canal; smear layer ID ELECTRON-MICROSCOPIC EVALUATION; SMEAR LAYER REMOVAL; DEMINERALIZATION; IRRIGATION; IRRIGANTS; ABILITY AB Aim To measure the demineralization capability of 1 and 10% citric acid, 10% sodium citrate and 17%, EDTA during immersions of 5. 10 and 15 min on root canal dentine. Methodology Crowns were sectioned from eight maxillary canines. The cementum was removed from the cervical third of the roots to expose the dentine. Canals were prepared using a handpiece-mounted Largo Peeso reamer. A 3-mm thick cross-sectional slice was obtained from the cervical third of each root. Each slice was sectioned into four equal parts. These specimens were assigned to one of four groups (n = 8) for the application of 1% citric acid, 10% citric acid, 10% sodium citrate or 17% EDTA. Each specimen underwent three successive 5-min immersions in each solution at room temperature. The solutions were not renewed between immersions. Two millimetres of solution were collected from the extracts and lanthanum oxide was added for the calcium reading by spectrophotometry. To compare the amounts of calcium removed by each solution, the Friedman test was used for the global comparison and the Wilcoxon test for paired comparisons. Differences between groups were evaluated using the Kruskal-Wallis test for the global comparison and Mann-Whitney test for paired comparisons. Results Overall. 1 and 10% citric acid were more effective than EDTA or sodium citrate at the three immersion times (P < 0.001); 10%, citric acid was more effective than 1%, citric acid (P < 0.001). EDTA and I and 101% citric acid showed decreasing effectiveness with time, and the decrease was significant for citric acid at both concentrations (P < 0.001). Although sodium citrate removed little calcium during the three time periods. the small increase recorded was significant (P < 0.01.). Conclusions Citric acid at 10% was the most effective decalcifying agent, followed by 1% citric acid, 17% EDTA and 10%, sodium citrate. C1 Univ Granada, Sch Dent, Dept Dent Pathol & Therapeut, E-18071 Granada, Spain. Univ Pelotas, Sch Dent, Dept Endodont, Pelotas, Brazil. RP Gonzalez-Lopez, S, Univ Granada, Sch Dent, Dept Dent Pathol & Therapeut, Campus Cartuja,Colegio Maximo, E-18071 Granada, Spain. EM sglopez@ugr.es NR 24 TC 8 PU BLACKWELL PUBLISHING LTD PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND SN 0143-2885 J9 INT ENDOD J JI Int. Endod. J. PD JUN PY 2004 VL 37 IS 6 BP 365 EP 369 PG 5 SC Dentistry, Oral Surgery & Medicine GA 832BF UT ISI:000222241500003 ER PT J AU Galindo-Zaldivar, J Gamboa, L Maldonado, A Nakao, S Bochu, Y TI Tectonic development of the Bransfield Basin and its prolongation to the South Scotia Ridge, Northern Antarctic Peninsula SO MARINE GEOLOGY DT Article DE Bransfield Basin; continental blocks; Backarc Basin; transcurrent faults; roll-back ID WEST ANTARCTICA; PLATE BOUNDARY; DRAKE PASSAGE; EVOLUTION; ARC; SEA; SUBDUCTION; ISLANDS; MARGIN; RIFT AB The Bransfield Basin is located off the northern tip of the Antarctic Peninsula. The analysis of multichannel seismic reflection profiles allows the shallow structure of the Bransfield Basin and its eastwards prolongation through the Scotia Sea to be imaged. The Bransfield Basin is asymmetrical, with most of the sediment input coming from the passive Antarctic Peninsula margin, which is deformed by normal faults generally dipping less than 45degrees northwestwards. Much less sediment comes from the conjugate South Shetland Islands margin, which is dominated by high-angle normal faults, generally dipping between 45degrees and 60degrees, constituting the inner boundary of the South Shetland Block tectonic horst. The detachment and moving apart of the South Shetland Block from the Antarctic Peninsula led to the opening of the Bransfield Basin, where incipient oceanic spreading has been reported previously. The South Shetland Block outer boundary to the northwest is made of the South Shetland Trench, which to the east passes into the sinistral transpressive Scotia-Antarctic plate boundary marked by the prominent South Scotia Ridge. Following cessation of spreading in the Phoenix-Antarctic Ridge northwest of the South Shetland Block during middle Pliocene, roll-back played a major role in the development of the Bransfield Basin, with maximum extension in the Central subbasin. In addition, the Eastern Bransfield Basin accommodates most of the sinistral transtensional deformation along the South Scotia Ridge. Normal and reverse faults were simultaneously active along the inner and outer boundaries, respectively, of the continental crust fragment constituting the South Shetland Block. The development of the Bransfield Basin offers a good example of the tectonic processes involved in continental fragmentation associated with backarc basin development. (C) 2004 Elsevier B.V. All rights reserved. C1 Univ Granada, Dept Geodinam, E-18071 Granada, Spain. Petr Brasileiro SA, Rio De Janeiro, Brazil. Univ Granada, CSIC, Inst Andaluz Ciencias Tierra, E-18071 Granada, Spain. Guangzhou Marine Geol Survey, Guangzhou, Peoples R China. RP Galindo-Zaldivar, J, Univ Granada, Dept Geodinam, Campus Fuenteneuva S-N, E-18071 Granada, Spain. EM jgalindo@ugr.es NR 52 TC 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0025-3227 J9 MAR GEOLOGY JI Mar. Geol. PD MAY 31 PY 2004 VL 206 IS 1-4 SI Sp. Iss. 1 BP 267 EP 282 DI 10.1016/j.margeo.2004.02.007 PG 16 SC Geosciences, Multidisciplinary; Oceanography GA 832HK UT ISI:000222257900014 ER PT J AU Steptoe, A Wardle, J Bages, N Sallis, JF Sanabria-Ferrand, PA Sanchez, M TI Drinking and driving in university students: An international study of 23 countries SO PSYCHOLOGY & HEALTH LA English DT Article DE alcohol-impaired driving; road traffic crashes; driver behaviour; health beliefs; international ID NATIONAL-SURVEY; BINGE-DRINKING; ALCOHOL; BEHAVIOR; COLLEGE; HEALTH; RISK AB Alcohol-impaired driving is a major problem in many countries. We assessed drinking and driving and associated attitudes and legislative practices in 8282 male and 10 816 female students at universities in 23 countries. The age-adjusted prevalence of drinking and driving was 20% in men, and 7% in women. There was wide variation between countries, with the highest levels in men and women from the USA and men from South American and Mediterranean countries. Rates correlated significantly with national surveys of drinking and driving, and with national road traffic accident death rates. Drinking and driving was more prevalent in country samples in which the legal blood alcohol threshold was higher. Attitudes to drinking and driving and other aspects of hazardous driving were strongly associated with drinking and driving both within and between countries. A multi-level approach involving changes in blood alcohol laws and efforts to shift the attitudes of individuals who drink and drive is suggested by the current results. C1 UCL, Dept Epidemiol & Publ Hlth, London WC1E 6BT, England. Univ Simon Bolivar, Caracas, Venezuela. San Diego State Univ, Dept Psychol, San Diego, CA 92182 USA. Univ Mil Nueva Granada, Fac Med, Bogota, Colombia. Univ Granada, Dept Pesonalidad Evaluac & Tratamiento Psicol, E-18071 Granada, Spain. RP Steptoe, A, UCL, Dept Epidemiol & Publ Hlth, London WC1E 6BT, England. EM a.steptoe@ucl.ac.uk NR 28 TC 2 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0887-0446 J9 PSYCHOL HEALTH JI Psychol. Health PD AUG PY 2004 VL 19 IS 4 BP 527 EP 540 DI 10.1080/08870440310001616542 PG 14 SC Public, Environmental & Occupational Health; Psychology, Multidisciplinary GA 837CN UT ISI:000222605300009 ER PT J AU Martin-Sanchez, J Navarro-Mari, JM Pasquau-Liano, J Salomon, OD Morillas-Marquez, F TI Visceral leishmaniasis caused by Leishmania infantum in a Spanish patient in Argentina: What is the origin of the infection? Case report SO BMC INFECTIOUS DISEASES LA English DT Article ID CUTANEOUS LEISHMANIASIS; TRAVELERS AB Background: The question "Where have you been?" is a common one asked by doctors in Northern Europe and America when faced with clinical symptoms not typical of their country. This question must also arise in the clinics of developing countries in which non-autochthonous cases such as the one described here can appear. Important outbreaks of Leishmania infantum have been recorded in the last decade in several Latin American countries but its presence has not yet been recorded in Argentina. We report the first case of visceral leishmaniasis owing to L. infantum in this country. Case presentation: A 71-year-old Spanish woman who has been living in Mendoza, Argentina, during the last 40 years presented with a history of high fever and shivering, anemia, leukopenia and splenomegaly over two years. Argentinian doctors did not suspect visceral leishmaniasis even when the histological analysis revealed the presence of "intracytoplasmatic spheroid particles compatible with fungal or parasitic infection". After a serious deterioration in her health, she was taken to Spain where she was evaluated and visceral leishmaniasis was established. Specific identification of the parasite was done by PCR-ELISA, isoenzyme electrophoresis and RAPD-PCR. Conclusion: We would like to point out that: i) cases such as the one described here, which appear in non-endemic areas, can pass unnoticed by the clinical physician. ii) in countries in which these introduced cases reside, in-depth parasitological studies are required into vectors and possible reservoirs to rule out the rare case of local infection and, once infection has taken place, to ensure that this does not spread by anthroponotic transmission or a competent reservoir. C1 Univ Granada, Fac Farm, Dept Parasitol, E-18071 Granada, Spain. Hosp Univ Virgen Nieves, Microbiol Serv, Granada, Spain. Hosp Univ Virgen Nieves, Unidad Enfermedades Infecciosas, Granada, Spain. Minist Salud, Adm Nacl Labs & Inst Salud Dr Carlos G Malbran, CeNDIE, Buenos Aires, DF, Argentina. RP Martin-Sanchez, J, Univ Granada, Fac Farm, Dept Parasitol, Campus Univ Cartuja, E-18071 Granada, Spain. EM joaquina@ugr.es josem.navarro.sspa@juntadeandalucia.es pascuau@juntadeandalucia.es danielsalomon@hotmail.com fmorilla@ugr.es NR 33 TC 4 PU BIOMED CENTRAL LTD PI LONDON PA MIDDLESEX HOUSE, 34-42 CLEVELAND ST, LONDON W1T 4LB, ENGLAND SN 1471-2334 J9 BMC INFECT DIS JI BMC Infect. Dis. PD JUN 29 PY 2004 VL 4 AR 20 DI 10.1186/1471-2334-4-20 PG 5 SC Infectious Diseases GA 837FR UT ISI:000222614400002 ER PT J AU Eidelman, S Hayes, KG Olive, KA Aguilar-Benitez, M Amsler, C Asner, D Babu, KS Barnett, RM Beringer, J Burchat, PR Carone, CD Caso, C Conforto, G Dahl, O D'Ambrosio, G Doser, M Feng, JL Gherghetta, T Gibbons, L Goodman, M Grab, C Groom, DE Gurtu, A Hagiwara, K Hernandez-Rey, JJ Hikasa, K Honscheid, K Jawahery, H Kolda, C Kwon, Y Mangano, ML Manohar, AV March-Russell, J Masoni, A Miquel, R Monig, K Murayama, H Nakamura, K Navas, S Pape, L Patrignani, C Piepke, A Raffelt, G Roos, M Tanabashi, M Terning, J Tornqvist, NA Trippe, TG Vogel, P Wohl, CG Workman, RL Yao, WM Zyla, PA Armstrong, B Gee, PS Harper, G Lugovsky, KS Lugovsky, SB Lugovsky, VS Rom, A Artuso, M Barberio, E Battaglia, M Bichsel, H Biebel, O Bloch, P Cahn, RN Casper, D Cattai, A Chivukula, RS Cowan, G Damour, T Desler, K Dobbs, MA Drees, M Edwards, A Edwards, DA Elvira, VD Erler, J Ezhela, VV Fetscher, W Fields, BD Fosler, B Froidevaux, D Fukugita, M Gaisser, TK Garren, L Gerber, HJ Gerbier, G Gilman, FJ Haber, HE Hagmann, C Hewett, J Hinchliffe, I Hogan, CJ Hohler, G Igo-Kemenes, P Jackson, JD Johnson, KF Karlen, D Kayser, B Kirkby, D Klein, SR Kleinknecht, K Knowles, IG Kreitz, P Kuyanov, YV Lahav, O Langacker, P Liddle, A Littenberg, L Manley, DM Martin, AD Narain, M Nason, P Nir, Y Peacock, JA Quinn, HR Raby, S Ratcliff, BN Razuvaev, EA Renk, B Rolandi, G Ronan, MT Rosenberg, LJ Sachrajda, CT Sakai, Y Sanda, AI Sarkar, S Schmitt, M Schneider, O Scott, D Seligman, WG Shaevitz, MH Sjostrand, T Smoot, GF Spanier, S Spieler, H Spooner, NJC Srednicki, M Stahl, A Stanev, T Suzuki, M Tkachenko, NP Trilling, GH Valencia, G van Bibber, K Vincter, MG Ward, DR Webber, BR Whalley, M Wolfenstein, L Womersley, J Woody, CL Zenin, OV Zhu, RY CA Particle Data Grp TI Review of particle physics SO PHYSICS LETTERS B LA English DT Review AB This biennial Review summarizes much of Particle Physics. Using data from previous editions, plus 1726 new measurements from 512 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons. We also summarize searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as the Standard Model, particle detectors, probability, and statistics. Among the 119 reviews are many that are new or heavily revised including those on neutrino mixing, CP violation in K, D, and B mesons, V-cb, the new exotic e(1540) particle, extra-dimensions, grand unified theories, cosmic background radiation, dark matter, cosmological parameters, and big bang cosmology. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review. All tables, listings, and reviews (and errata) are also available on the Particle Data Group website: http://pdg.lbl.gov. C1 Budker Inst Nucl Phys, RU-630090 Novosibirsk, Russia. Hillsdale Coll, Dept Phys, Hillsdale, MI 49242 USA. Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA. CIEMAT, E-28040 Madrid, Spain. Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland. Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA. Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA. Stanford Univ, Dept Phys, Stanford, CA 94305 USA. Coll William & Mary, Dept Phys, Nucl & Particle Theory Grp, Williamsburg, VA 23187 USA. Univ Genoa, Ist Nazl Fis Nucl, I-16146 Genoa, Italy. Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. Univ Urbino, I-61029 Urbino, Italy. Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy. Univ Naples Federico II, Dipartimento Sci Fisiche, I-80126 Naples, Italy. CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland. Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. Cornell Univ, Newman Lab Elementary Particle Phys, Ithaca, NY 14853 USA. Argonne Natl Lab, Argonne, IL 60439 USA. ETH, Inst Particle Phys, CH-8093 Zurich, Switzerland. Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India. KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan. Univ Valencia, CSIC, IFIC, Inst Fis Corpuscular, E-46071 Valencia, Spain. Tohoku Univ, Dept Phys, Aoba Ku, Sendai, Miyagi 9808578, Japan. Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. Univ Maryland, Dept Phys & Astron, College Pk, MD 20742 USA. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Yonsei Univ, Dept Phys, Seoul 120749, South Korea. Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. Citta Univ Monserrato, Ist Nazl Fis Nucl, Sez Cagliari, I-09042 Monserrato, CA, Italy. DESY, D-15735 Zeuthen, Germany. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain. Univ Granada, CAFPE, E-18071 Granada, Spain. Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA. Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst Phys, D-80805 Munich, Germany. Univ Helsinki, Dept Phys Sci, FIN-00014 Helsinki, Finland. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA. George Washington Univ, Dept Phys, Ashburn, VA 20147 USA. Inst High Energy Phys, COMPAS Grp, RU-142284 Protvino, Russia. Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA. Univ Melbourne, Sch Phys, Parkville, Vic 3052, Australia. Univ Washington, Dept Astron, Seattle, WA 98195 USA. Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Univ London, Dept Phys, Egham TW20 OEX, Surrey, England. Inst Hautes Etud Sci, F-91440 Bures Sur Yvette, France. DESY, D-22603 Hamburg, Germany. Tech Univ Munich, Fak Phys Dept, D-85748 Garching, Germany. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico. Univ Illinois, Dept Astron, Urbana, IL 61801 USA. Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England. Univ Tokyo, Inst Cosmic Ray Res, Kashiwa 2778582, Chiba, Japan. Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA. CEA Saclay, F-91191 Gif Sur Yvette, France. Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Univ Karlsruhe, Inst Theoret Phys, D-76128 Karlsruhe, Germany. Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany. Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Univ Mainz, Inst Phys, D-55099 Mainz, Germany. Univ Edinburgh, Inst Astron, Edinburgh EH9 3JZ, Midlothian, Scotland. Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England. Univ Penn, Dept Phys, Philadelphia, PA 19104 USA. Univ Sussex, Ctr Astron, Brighton BN1 9RH, E Sussex, England. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Kent State Univ, Dept Phys, Kent, OH USA. Univ Durham, Inst Particle Phys, Dept Phys, Durham DH1 3LE, England. Boston Univ, Dept Phys, Boston, MA USA. Ist Nazl Fis Nucl, I-20133 Milan, Italy. Weizmann Inst Sci, Dept Particle Phys, I-76100 Rehovot, Israel. MIT, Dept Phys & Lab Nucl Sci, Cambridge, MA 02139 USA. Univ Southampton, Dept Phys & Astron, Southampton S017 1BJ, Hants, England. Nagoya Univ, Dept Phys, Nagoya, Aichi 4848602, Japan. Univ Oxford, Theoret Phys, Oxford OX1 3NP, England. Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. Swiss Fed Inst Technol, Lausanne, Switzerland. Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada. Columbia Univ, Nevis Labs, Irwington, NY 10533 USA. Columbia Univ, Dept Phys, New York, NY 10027 USA. Lund Univ, Dept Theoret Phys, S-23362 Lund, Sweden. Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England. Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. Iowa State Univ Sci & Technol, Dept Phys, Ames, IA 50011 USA. Univ Alberta, Dept Phys, Edmonton, AB T6G 2JJ, Canada. Cavendish Lab, Cambridge CB3 0HE, England. CALTECH, Dept Phys, Pasadena, CA 91125 USA. RP Eidelman, S, Budker Inst Nucl Phys, RU-630090 Novosibirsk, Russia. NR 8 TC 2911 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD JUL 15 PY 2004 VL 592 IS 1-4 BP 1 EP 1109 DI 10.1016/j.physletb.2004.06.001 PG 1109 SC Physics, Multidisciplinary GA 843MZ UT ISI:000223089300001 ER PT J AU Arrindell, WA Eisemann, M Oei, TPS Caballo, VE Sanavio, E Sica, C Bages, N Feldman, L Torres, B Iwawaki, S Hatzichristou, C Castro, J Canalda, G Furnham, A van der Ende, J CA Cultural Clin Psychol Study Grp TI Phobic anxiety in 11 nations: part II. Hofstede's dimensions of national cultures predict national-level variations SO PERSONALITY AND INDIVIDUAL DIFFERENCES LA English DT Article DE gender roles; fears; cross-national differences; national masculinity-femininity; uncertainty avoidance; Hofstede ID EYSENCK PERSONALITY QUESTIONNAIRE; SEX; AGORAPHOBIA; POPULATION; SIMILARITY; AUSTRALIA; COUNTRIES; STUDENTS; FEARS; POWER AB Hofstede's dimensions of national cultures termed Masculinity-Femininity (MAS) and Uncertainty Avoidance (UAI) (Hofstede, 2001) are proposed to be of relevance for understanding national-level differences in self-assessed fears. The potential predictive role of national MAS was based on the classical work of Fodor (Fodor, 1974). Following Fodor, it was predicted that masculine (or tough) societies in which clearer differentiations are made between gender roles (high MAS) would report higher national levels of fears than feminine (or soft/modest) societies in which such differentiations are made to a clearly lesser extent (low MAS). In addition, it was anticipated that nervous-stressful-emotionally-expressive nations (high UAI) would report higher national levels of fears than calm-happy and low-emotional countries (low UAI), and that countries high on both MAS and UAI would report the highest national levels of fears. A data set comprising 11 countries (N > 5000) served as the basis for analyses. As anticipated, (a) high MAS predicted higher national levels of Agoraphobic fears and of Bodily Injury-Illness-Death fears; (b) higher scores on both UAI and MAS predicted higher national scores on Bodily Injury-Illness-Death fears, fears of Sexual and Aggressive Scenes, and Harmless Animals fears; (c) higher UAI predicted higher national levels of Harmless Animals, Bodily Injury-Illness-Death, and Agoraphobic fears. (C) 2003 Elsevier Ltd. All rights reserved. C1 Univ Groningen, Heymans Inst, Dept Clin & Dev Psychol, NL-9712 TS Groningen, Netherlands. Univ Tromso, N-9001 Tromso, Norway. Univ Queensland, Brisbane, Qld, Australia. Univ Granada, E-18071 Granada, Spain. Univ Padua, I-35100 Padua, Italy. Univ Parma, I-43100 Parma, Italy. Univ Simon Bolivar, Caracas, Venezuela. Univ Pais Vasco, E-20080 San Sebastian, Spain. Showa Womens Univ, Tokyo, Japan. Univ Athens, GR-10679 Athens, Greece. Hosp Clin Barcelona, Barcelona, Spain. UCL, London WC1E 6BT, England. Erasmus MC, Rotterdam, Netherlands. RP Arrindell, WA, Univ Groningen, Heymans Inst, Dept Clin & Dev Psychol, Grote Kruisstr 2-I, NL-9712 TS Groningen, Netherlands. EM w.arrindell@ppsw.rug.nl NR 50 TC 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0191-8869 J9 PERS INDIV DIFFER JI Pers. Individ. Differ. PD AUG PY 2004 VL 37 IS 3 BP 627 EP 643 DI 10.1016/j.paid.2003.11.002 PG 17 SC Psychology, Social GA 844FR UT ISI:000223143700017 ER PT J AU Flores, JL Parra, Y Percoco, U TI On the general structure of Ricci collineations for type B warped space-times SO JOURNAL OF MATHEMATICAL PHYSICS LA English DT Article ID MATTER COLLINEATIONS AB A complete study of the structure of Ricci collineations for type B warped space-times is carried out. This study can be used as a method to obtain these symmetries in such space-times. Special cases as 2+2 reducible space-times, and plane and spherical symmetric space-times are considered specifically. (C) 2004 American Institute of Physics. C1 Univ Granada, Fac Ciencias, Dept Geometria & Topol, E-18071 Granada, Spain. Univ Los Andes, Fac Ciencias, Dept Fis, Lab Fis Teor, Merida 5101, Venezuela. Univ Los Andes, Fac Ciencias, Dept Fis, Ctr Astrofis Teor, Merida 5101, Venezuela. RP Flores, JL, Univ Granada, Fac Ciencias, Dept Geometria & Topol, Ave Fuentenueva S-N, E-18071 Granada, Spain. EM floresj@math.sunysb.edu jparra@ula.ve upercoco@ula.ve NR 10 TC 1 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0022-2488 J9 J MATH PHYS-NY JI J. Math. Phys. PD SEP PY 2004 VL 45 IS 9 BP 3546 EP 3557 DI 10.1063/1.1775875 PG 12 SC Physics, Mathematical GA 849QP UT ISI:000223555200009 ER PT J AU Odriozola, G Leone, R Schmitt, A Callejas-Fernandez, J Martinez-Garcia, R Hidalgo-Alvarez, R TI Irreversible versus reversible aggregation: Mean field theory and experiments SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID COLLOIDAL AGGREGATION; FRAGMENTATION PROCESSES; STOCHASTIC SIMULATION; LIGHT-SCATTERING; TRANSITION; KINETICS; RLCA; DLCA AB Colloidal aggregation processes arising at different electrolyte concentrations were studied by means of experiments and confronted with theoretical predictions of different kinetic aggregation models. For this purpose, aqueous dispersions of relatively large polystyrene microspheres were chosen as experimental systems. Aggregation was induced by adding KBr electrolyte to the initially stable particle dispersions. During the aggregation processes, the cluster-size distribution was monitored by means of single cluster light scattering. Analyzing the time evolution of the monomer concentration, we found that the processes arising even at moderate electrolyte concentrations cannot be described by pure time-independent irreversible aggregation models. Hence, alternative models such as time-dependent irreversible aggregation and several reversible aggregation models were also tested. The model that considers a time-dependent sticking probability was found to fit the data quite satisfactorily. Nevertheless, the fitted was so slow that it seems not very likely to find such a behavior in real systems. The aggregation-fragmentation models reported in the literature were unable to reproduce the experimental observations. Hence, a more realistic reversible aggregation model was developed. This model accounts also for reenforced or double bonds between the constituent particles. The corresponding fit improved significantly and reached the same quality as the time-dependent model. Moreover, the obtained fitting parameters were in qualitative agreement with the DLVO predictions and so, reversible aggregation seems to be a more reasonable explanation for the experimental data than time-dependent irreversible aggregation. However, no definite statement on the possible secondary bond fragmentation mechanism may be made since both the applied shear stress in the measuring cell and thermal fluctuations can cause weaker bonds to break. (C) 2004 American Institute of Physics. C1 Inst Mexicano Petr, Programa Ingn Mol, Mexico City 07730, DF, Mexico. Univ Republica, Fac Quim, Dept Quim Fis & Matemat, Montevideo 11800, Uruguay. Univ Granada, Dept Fis Aplicada, E-18071 Granada, Spain. RP Odriozola, G, Inst Mexicano Petr, Programa Ingn Mol, Lazaro Cardenas 152, Mexico City 07730, DF, Mexico. EM rhidalgo@ugr.es NR 26 TC 5 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 15 PY 2004 VL 121 IS 11 BP 5468 EP 5481 DI 10.1063/1.1779571 PG 14 SC Physics, Atomic, Molecular & Chemical GA 851XU UT ISI:000223720600052 ER PT J AU Belmar, M Morata, D Munizaga, F de Arce, CP Morales, S Carrillo, FJ TI Significance of K-Ar dating of very low-grade metamorphism in Triassic-Jurassic pelites from the Coastal Range of central Chile SO CLAY MINERALS LA English DT Article DE pelites; K-Ar dating; very low-grade metamorphism; Costal Range; Chile ID SEDIMENTARY-ROCKS; ILLITE-SMECTITE; SOUTHERN CHILE; EVOLUTION; TEMPERATURE; SYSTEMATICS; BASEMENT; BEARING; CLAYS; AGES AB K-Ar isotopic dating of very low-grade metamorphism affecting Triassic-Jurassic rocks in the Coastal Range of central Chile was carried out on whole rocks and their <2 mu m size fractions. In the study area, a regional-burial low-grade metamorphism at anchizone conditions (T <= 190 degrees C) and low-pressure conditions (P >= 1.3 kbar) has been described. The highest observed temperatures are related to a contact metamorphism produced by nearby Jurassic intrusions, with a P-T estimate at the immediate contact zone of similar to 650-690 degrees C and 4 kbar. The whole-rock K-Ar age of 174 +/- 5 Ma is interpreted as belonging to the contact metamorphism due to the intrusion of Jurassic plutons (165+/-5 Ma to 175+/-5 Ma). A time-interval of similar to 20 Ma between the diagenesis (206 Ma) and the anchizonal very low-grade metamorphism (181-184 Ma) is obtained, and a rate of subsidence of similar to 120 m/Ma is proposed for these Triassic-Jurassic basins. A thermal influence on the burial, very low-grade, regional metamorphism is invoked. C1 Univ Chile, Dept Geol, Santiago, Chile. Serv Nacl Geol & Mineria, Santiago, Chile. Univ Granada, Fac Ciencias, Dept Mineral Petrol, Granada 18002, Spain. RP Belmar, M, Univ Chile, Dept Geol, Plaza Ercilla 803, Santiago, Chile. EM mbelmar@ing.uchile.cl NR 37 TC 2 PU MINERALOGICAL SOCIETY PI LONDON PA 41 QUEENS GATE, LONDON SW7 5HR, ENGLAND SN 0009-8558 J9 CLAY MINER JI Clay Min. PD JUN PY 2004 VL 39 IS 2 BP 151 EP 162 DI 10.1180/0009855043920127 PG 12 SC Mineralogy GA 853IN UT ISI:000223820600004 ER PT J AU Fagundes, V Camacho, JPM Yonenaga-Yassuda, Y TI Are the dot-like chromosomes in Trinomys iheringi (Rodentia, Echimyidae) B chromosomes? SO CYTOGENETIC AND GENOME RESEARCH DT Article ID LOCUSTA-MIGRATORIA; MITOTIC INSTABILITY; SUBGENUS TRINOMYS; GENUS PROECHIMYS; ACCUMULATION; BRAZIL; SYSTEM; STATE; FISH AB In this article we review the existing cytogenetic information on the polymorphic dot-like chromosomes in Trinomys iheringi, the only species in the family Echimyidae harboring them, and provide new data on the frequency, banding properties, meiotic behavior and DNA composition of these minute chromosomes. Since no individuals lacking these chromosomes have hitherto been found, one of the main properties of B chromosomes, i.e. dispensability, has not yet been tested, so that some reasonable doubt might exist on whether they are true B chromosomes. The dot-like chromosomes were also present in the twelve new individuals analyzed, showed intraindividual variation in number, most likely due to mitotic instability during development, failed to show C-bands, showed late-replication, paired among them in meiosis, but not with the large chromosomes, and appeared to be mainly composed of telomeric DNA. These results suggest that these dot-like chromosomes might actually be mitotically unstable micro B chromosomes showing very high frequency in the natural populations thus far analyzed. But, to be confident of this conclusion, individuals lacking the dot-like chromosomes should actively be searched in future research to test their dispensability. Copyright (C) 2004 S. Karger AG, Basel. C1 Univ Fed Espirito Santo, Ctr Ciencias Humanas & Nat, Dept Ciencias Biol, BR-29040090 Vitoria, ES, Brazil. Univ Granada, Dept Genet, Granada, Spain. Univ Sao Paulo, Inst Biociencias, Dept Biol, Sao Paulo, Brazil. RP Fagundes, V, Univ Fed Espirito Santo, Ctr Ciencias Humanas & Nat, Dept Ciencias Biol, Av Marechal Campos,1468 Maruipe, BR-29040090 Vitoria, ES, Brazil. EM vfagunde@npd.ufes.br NR 25 TC 3 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 1424-8581 J9 CYTOGENET GENOME RES JI Cytogenet. Genome Res. PY 2004 VL 106 IS 2-4 BP 159 EP 164 DI 10.1159/000079282 PG 6 SC Cell Biology; Genetics & Heredity GA 859DW UT ISI:000224243800004 ER PT J AU Montes, JL Ortiz, JJ Requena, I Perusquia, R TI Searching for full power control rod patterns in a boiling water reactor using genetic algorithms SO ANNALS OF NUCLEAR ENERGY LA English DT Article ID MANAGEMENT OPTIMIZATION PACKAGE; FORMOSA-B; PROGRAM; SYSTEM AB One of the most important questions related to both safety and economic aspects in a nuclear power reactor operation, is without any doubt its reactivity control. During normal operation of a boiling water reactor, the reactivity control of its core is strongly determined by control rods patterns efficiency. In this paper, GACRP system is proposed based on the concepts of genetic algorithms for full power control rod patterns search. This system was carried out using LVNPP transition cycle characteristics, being applied too to an equilibrium cycle. Several operation scenarios, including core water flow variation throughout the cycle and different target axial power distributions, are considered. Genetic algorithm fitness function includes reactor security parameters, such as MLHGR, MCPR, reactor k(eff) and axial power density. (C) 2004 Elsevier Ltd. All rights reserved. C1 ININ, Dept Sistemas Nucl, Mexico City, DF, Mexico. Univ Granada, Dept Ciencias Computac & JA ETSII, Granada 18071, Spain. RP Montes, JL, ININ, Dept Sistemas Nucl, Carr Mexico Toluca Km 36-5, Mexico City, DF, Mexico. EM jlmt@nuclear.inin.mx jortiz@nuclear.inin.mx requena@decsai.ugr.es rpc@nuclear.inin.mx NR 19 TC 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0306-4549 J9 ANN NUCL ENERG JI Ann. Nucl. Energy PD NOV PY 2004 VL 31 IS 16 BP 1939 EP 1954 DI 10.1016/j.anucene.2004.06.010 PG 16 SC Nuclear Science & Technology GA 859IY UT ISI:000224257800007 ER PT J AU Oliver-Salvador, MC Gonzalez-Ramirez, LA Gavira, JA Soriano-Garcia, M Garcia-Ruiz, JM TI Purification, crystallization and preliminary X-ray analysis of mexicain SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY LA English DT Article ID CYSTEINE PROTEASES; CRYSTAL-STRUCTURE; PROTEINS; PAPAYA AB Mexicain is a 23.7 kDa papain-like cysteine protease from the tropical plant Jacaratia mexicana. Extracted as a mix of proteases from the latex of the fruit, mexicain is isolated after canon-exchange chromatography as the most abundant product. The purified product inhibited with E-64 was crystallized by sitting-drop vapour diffusion in the presence of ethanolamine. Cryoprotected crystals diffracted X-rays from a home source to 1.98 Angstrom and belong to the monoclinic space group P2(1), with unit-cell parameters a=57.36, b=90.45, c=80.39 Angstrom, P=92.64. The asymmetric unit contains four molecules of mexicain, with a corresponding crystal volume per protein weight (V-M) of 2.24 Angstrom(3) Da(-1) and a solvent content of 45% by volume. A molecular-replacement model has been determined and refinement is in progress. C1 Univ Granada, CSIC, Lab Estudios Cristalog, Granada, Spain. IPN, Unidad Profes Interdisciplinaria Biotecnol, Mexico City 07738, DF, Mexico. UNAM, Inst Quim, Mexico City, DF, Mexico. RP Garcia-Ruiz, JM, Univ Granada, CSIC, Lab Estudios Cristalog, Granada, Spain. EM jmgruiz@ugr.es NR 23 TC 2 PU BLACKWELL MUNKSGAARD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0907-4449 J9 ACTA CRYSTALLOGR D-BIOL CRYST JI Acta Crystallogr. Sect. D-Biol. Crystallogr. PD NOV PY 2004 VL 60 PN Part 11 BP 2058 EP 2060 DI 10.1107/S0907444904021638 PG 3 SC Biochemical Research Methods; Biochemistry & Molecular Biology; Biophysics; Crystallography GA 863WW UT ISI:000224595200029 ER PT J AU Magan, R Marin, C Salas, JM Barrera-Perez, M Rosales, MJ Sanchez-Moreno, M TI Cytotoxicity of three new triazolo-pyrimidine derivatives against the plant trypanosomatid: Phytomonas sp isolated from Euphorbia characias SO MEMORIAS DO INSTITUTO OSWALDO CRUZ LA English DT Article DE Phytomonas sp; triazolo-pyrimidine complexes; chemotherapeutic agents ID LEISHMANIA-DONOVANI; METABOLISM; STAHELI; CRUZI AB There is no effective chemotherapy against diseases caused by Phytomonas sp., a plant trypanosomatid responsible for economic losses in major crops. We tested three triazolo-pyrimidine complexes [two with Pt(II), and another with Ru(III)] against promastigotes of Phytomonas sp. isolated from Euphorbia characias. The incorporation of radiolabelled precursors, ultrastructural alterations and changes in the pattern of metabolite excretion were examined. Different degrees of toxicity were found for each complex: the platinun compound showed an inhibition effect on nucleic acid synthesis, provoking alterations on the levels Of mitochondria, nucleus and glycosomes. These results, together with others reported previously in our laboratory about the activity of pyrimidine derivatives, reflect the potential of these compounds as agents in the treatment of Phytomonas sp. C1 Univ Granada, Fac Ciencias, Dept Parasitol, Inst Biotecnol, E-18071 Granada, Spain. Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. Univ Autonoma Yucatan, Parasitol Lab, Ctr Invest Reg, Merida, Venezuela. RP Sanchez-Moreno, M, Univ Granada, Fac Ciencias, Dept Parasitol, Inst Biotecnol, Ochoa S-N, E-18071 Granada, Spain. EM msanchem@ugr.es NR 18 TC 2 PU FUNDACO OSWALDO CRUZ PI RIO DE JANEIRO, RJ PA AV BRASIL 4365, 21045-900 RIO DE JANEIRO, RJ, BRAZIL SN 0074-0276 J9 MEM INST OSWALDO CRUZ JI Mem. Inst. Oswaldo Cruz PD OCT PY 2004 VL 99 IS 6 BP 651 EP 656 PG 6 SC Parasitology; Tropical Medicine GA 864NN UT ISI:000224640300021 ER PT J AU Lisenfeld, U Braine, J Duc, PA Brinks, E Charmandaris, V Leon, S TI Molecular and ionized gas in the tidal tail in Stephan's Quintet SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE stars : formation; ISM : molecules; galaxies : clusters : individual : Stephan's Quintet; galaxies : interactions; galaxies : ISM; galaxies : intergalactic medium ID PHYSICAL CONDITIONS; INTRAGROUP MEDIUM; GALAXIES; EMISSION; STARBURST; (CO)-C-13; OBJECTS; MERGERS; REGIONS AB We have mapped with the IRAM interferometer at Plateau de Bure (PdBI) the (CO)-C-12 emission towards intergalactic star forming regions located in the tidal tail stemming from NGC 7319, in the Stephan's Quintet compact group of galaxies. The (CO)-C-13 emission of the same region was observed with the IRAM 30 m telescope and optical spectroscopy of several H.. regions in the area were obtained with the Calar Alto 3.5 m telescope. We recovered with the interferometer about 50% of the (CO)-C-12(1-0) total emission that had been earlier measured with single dish observations (Lisenfeld 2002, A&A, 394, 823), indicating that about half of the molecular gas is distributed on spatial scales larger than about 10-15" (corresponding to 4-6 kpc) to which PdBI is not sensitive. We find two main areas of CO emission: (i) an elongated region towards the area known as SQ B where a Tidal Dwarf Galaxy could currently be forming and (ii) a barely resolved area at the tip of the optical tidal arm. Both regions follow dust lanes visible on HST images and their CO peak coincides spatially exactly with the maximum of the Ha line emission. In SQ B, there is furthermore very good kinematical agreement between the CO, Ha and HI components. We conclude from these coincidences that the gaseous matter found in quantities in the area is physically associated to the optical tidal tail and thus that the intergalactic atomic hydrogen there was expelled from NGC 7319. Its origin had previously been much debated. Furthermore, the relatively high oxygen abundances ( about solar) estimated from the optical spectra of the H.. regions imply that the gas feeding the star formation originated from the inner regions of the parent galaxy. In SQ B, we derive from different tracers a star formation rate, corrected for dust extinction-which is important in the area-of 0.5 M-circle dot/yr, i. e. one of the highest values so far measured outside galaxies. The inferred molecular gas consumption time of 0.5 Gyr lies in the range of values found for spiral and starburst galaxies. On the other hand, the ratio of (CO)-C-12/(CO)-C-13 > 25 is much higher than the values found in disks of spiral galaxies. A relatively low opacity for the (CO)-C-12 gas is the most likely reason. C1 CSIC, Inst Astrofis Andalucia, Granada 18040, Spain. Univ Granada, Dept Fis Teor & Cosmos, Granada, Spain. Observ Bordeaux, UMR 5804, CNRS INSU, F-33270 Florac, France. CNRS, URA 2052, F-91191 Gif Sur Yvette, France. CEA DSM DAPNIA, Serv Astrophys, F-91191 Gif Sur Yvette, France. INAOE, Puebla 72000, Mexico. Cornell Univ, Dept Astron, Ithaca, NY 14853 USA. Observ Paris, LERMA, F-75014 Paris, France. RP Lisenfeld, U, CSIC, Inst Astrofis Andalucia, Apdo 3004, Granada 18040, Spain. NR 27 TC 5 PU E D P SCIENCES PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD NOV PY 2004 VL 426 IS 2 BP 471 EP 479 DI 10.1051/0004-6361:20041330 PG 9 SC Astronomy & Astrophysics GA 869EI UT ISI:000224965800017 ER PT J AU Bascones, A Gamonal, J Gomez, M Silva, A Gonzalez, MA TI New knowledge of the pathogenesis of periodontal disease SO QUINTESSENCE INTERNATIONAL LA English DT Review ID PROGRAMMED CELL-DEATH; RAPIDLY PROGRESSIVE PERIODONTITIS; GINGIVAL CREVICULAR FLUID; INHIBITS CYTOKINE PRODUCTION; RNA-EXPRESSING MACROPHAGES; ACID-INDUCED APOPTOSIS; HUMAN INFLAMED GINGIVA; IN-SITU HYBRIDIZATION; TUMOR-NECROSIS-FACTOR; ACTINOBACILLUS-ACTINOMYCETEMCOMITANS AB The aim of this study was to evaluate the relationship between the accumulation of interleukins IL-1beta, TNF-alpha, IL-8, and chemokine RANTES (Regulated upon Activation Normal T-cell Expressed and Secreted) in gingival fluid and periodontal support tissues in patients with periodontitis. A review is also provided of apoptotic processes as events of major importance, highlighting the presence of TUNEL cells and ultrastructural morphologic changes associated with cell apoptosis. There appears to be further evidence to support the important role of inflammation control. Cytokines may be considered as markers of the progression and severity of periodontitis as well as indicators of an appropiate response to treatment. However, further studies are needed to support and characterize this concept. C1 Univ Complutense Madrid, Fac Odontol, Sch Dent, Dept Stomatol, E-28040 Madrid, Spain. Univ Santiago Chile, Sch Dent, Dept Periodontol, Santiago, Chile. Univ Complutense Madrid, Sch Med, Dept Biochem & Mol Biol, Madrid, Spain. Ctr Invest Biol, Dept Immunol, E-28006 Madrid, Spain. Univ Granada, Sch Dent, Dept Stomatol, Granada, Spain. RP Bascones, A, Univ Complutense Madrid, Fac Odontol, Sch Dent, Dept Stomatol, C-Plaza Ramon & Cajal,S-N, E-28040 Madrid, Spain. EM avances@arrakis.es NR 129 TC 5 PU QUINTESSENCE PUBL CO INC PI CAROL STREAM PA 551 NORTH KIMBERLY DR, CAROL STREAM, IL 60188-1881 USA SN 0033-6572 J9 QUINTESSENCE INT JI Quintessence Int. PD OCT PY 2004 VL 35 IS 9 BP 706 EP 716 PG 11 SC Dentistry, Oral Surgery & Medicine GA 870UD UT ISI:000225082900005 ER PT J AU Tejera, NA Ortega, E Rodes, R Lluch, C TI Influence of carbon and nitrogen sources on growth, nitrogenase activity, and carbon metabolism of Gluconacetobacter diazotrophicus SO CANADIAN JOURNAL OF MICROBIOLOGY LA English DT Article DE Gluconacetobacter diazotrophicus; endophyte; metabolism; nitrogen fixation ID ACETOBACTER-DIAZOTROPHICUS; HERBASPIRILLUM-SEROPEDICAE; SUGAR-CANE; FIXATION; IDENTIFICATION; ROOT AB The effects of different carbon and nitrogen sources on the growth, nitrogenase activity, and carbon metabolism of Gluconacetobacter diazotrophicus were investigated. The amino acids asparagine, aspartic acid, and glutamic acid affected microbial growth and nitrogenase activity. Several enzymatic activities involved in the tricarboxylic acid cycle were affected by the carbon source used. In addition, glucose and gluconate significantly increased the oxygen consumption (respiration rate) of whole cells of G. diazotrophicus grown under aerobic conditions. Enzymes responsible for direct oxidation of glucose and gluconate were especially active in cells grown with sucrose and gluconate. The presence of amino acids in the apoplastic and symplastic sap of sugarcane stems suggests that these compounds might be of importance in the regulation of growth and nitrogenase activity during the symbiotic association. The information obtained from the plant-bacterium association together with the results of other biochemical studies could contribute to the development of biotechnological applications of G. diazotrophicus. C1 Univ Granada, Fac Ciencias, Dept Fisiol Vegetal, E-18071 Granada, Spain. Univ La Habana, Fac Biol, Dept Biol Vegetal, Havana, Cuba. RP Tejera, NA, Univ Granada, Fac Ciencias, Dept Fisiol Vegetal, Campus Fuentenueva S-N, E-18071 Granada, Spain. EM natejera@ugr.es NR 26 TC 3 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA, ONTARIO K1A 0R6, CANADA SN 0008-4166 J9 CAN J MICROBIOL JI Can. J. Microbiol. PD SEP PY 2004 VL 50 IS 9 BP 745 EP 750 DI 10.1139/W04-066 PG 6 SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Immunology; Microbiology GA 877LP UT ISI:000225572400012 ER PT J AU Galindo, J Urrutia, A Carrasco, RA Piattini, M TI Relaxing constraints in enhanced entity-relationship models using fuzzy quantifiers SO IEEE TRANSACTIONS ON FUZZY SYSTEMS LA English DT Article DE conceptual database design; extended (or enhanced) entity-relationship model (EER); fuzzy conceptual modeling; fuzzy constraints; fuzzy databases; fuzzy quantifiers ID ORIENTED DATA MODEL; UNCERTAIN-INFORMATION; MANAGING VAGUE; DATABASES; MANAGEMENT; DESIGN; SETS AB While various articles about fuzzy entity relationship (ER) and enhanced entity relationship (EER) models have recently been published, not all examine how the constraints expressed in the model may be relaxed. In this paper, our aim is to relax the constraints which can be expressed in a conceptual model using the modeling tool, so that these constraints can be made more flexible. We will also study new constraints that are not considered in classic EER models. We use the fuzzy quantifiers which have been widely studied in the context of fuzzy sets and fuzzy query systems for databases. In addition, we shall examine the representation of these constraints in an EER model and their practical repercussions. The following constraints are studied: the fuzzy participation constraint, the fuzzy cardinality constraint, the fuzzy completeness constraint to represent classes and subclasses, the fuzzy cardinality constraint on overlapping specializations, fuzzy disjoint and fuzzy overlapping constraints on specializations, fuzzy attribute-defined specializations, fuzzy constraints in union types or categories and fuzzy constraints in shared subclasses. We shall also demonstrate how fuzzy (min, max) notation can substitute the fuzzy cardinality constraint but not the fuzzy participation constraint. All these fuzzy constraints have a new meaning, they offer greater expressiveness in conceptual design, and are included in the so-called fuzzy EER model. C1 Univ Malaga, Dipartimento Lenguajes & Ciencias Computac, E-29071 Malaga, Spain. Univ Catolica Maule, Dept Computac & Informat, Talca, Chile. Caja Granada, Dept Knowledge Management, Granada 18006, Spain. Univ Castilla La Mancha, Escuela Super Informat, E-13071 Ciudad Real, Spain. RP Galindo, J, Univ Malaga, Dipartimento Lenguajes & Ciencias Computac, E-29071 Malaga, Spain. EM jgg@lcc.uma.es carrasco@caja-granada.es mpiattin@inf-cr.uclm.es NR 53 TC 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 1063-6706 J9 IEEE TRANS FUZZY SYST JI IEEE Trans. Fuzzy Syst. PD DEC PY 2004 VL 12 IS 6 BP 780 EP 796 DI 10.1109/TFUZZ.2004.836088 PG 17 SC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic GA 880SQ UT ISI:000225809900004 ER PT J AU Martinez-Gonzalez, LJ Martinez-Espin, E Fernandez-Rosado, F Moguel, MA Entrala, C Alvarez, JC Lorente, JA Budowle, B TI Mexican population data on fifteen STR loci (Identifiler (R) Kit) in a Chihuahua (North Central Mexico) sample SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE forensic science; DNA typing; population genetics; Mexico; Identifiler ID GENETIC-VARIATION AB POPULATION: Chihuahua, Northern Mexico, Mexico. C1 Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, E-18012 Granada, Spain. PGJ Estado Chihuahua, DG Serv Periciales, DNA Lab, Chihuahua, Mexico. FBI Lab Div, Quantico, VA 22135 USA. RP Lorente, JA, Univ Granada, Dept Legal Med, Fac Med, Lab Genet Identificat, Av Madrid 11, E-18012 Granada, Spain. NR 6 TC 3 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD JAN PY 2005 VL 50 IS 1 BP 236 EP 238 PG 3 SC Medicine, Legal GA 885WG UT ISI:000226187400042 ER PT J AU Espin, MJ Delgado, AV Rejon, L TI Electrorheologial properties of hematite/silicone oil suspensions under DC fields SO JOURNAL OF NON-NEWTONIAN FLUID MECHANICS LA English DT Article DE convection; electrorheological fluids; hematite; interfacial polarization; yield stress ID CONDUCTION MODEL; ELECTROVISCOUS FLUIDS; ELECTRIC-FIELDS; RESPONSE-TIME; RHEOLOGY; BEHAVIOR; MECHANISMS; SIMULATION; PARTICLES; FORCES AB Electrorheological (ER) fluids composed of alpha-Fe2O3 (hematite) particles suspended in silicone oil are studied in this work. The rheological response has been characterized as a function of field strength, shear rate and volume fraction. Rheological tests under DC electric fields elucidated the influence of the electric field strength, E, and volume fraction, phi, on the field-dependent yield stress, tau(y), It was found that this quantity scales with E and phi with a linear and parabolic dependence, respectively. The viscosities of electrified suspensions were found to increase by several orders of magnitude as compared to the unelectrified suspension at low shear rates, although at high-shear rates hydrodynamic effects become dominant and no effects of the electric field on the viscosity are observed. The work is completed with the analysis of microscopic observations of the structure acquired by the ER fluid upon application of a constant electric field. Electrohydrodynamic convection is found to be the origin of the ER response rather than the commonly admitted particle fibrillation. This fact can provide an explanation to the relationship between yield stress and electric field strength as well as the pattern of periodic structures observed in the measurement geometries. (C) 2004 Elsevier B.V. All rights reserved. C1 Univ Granada, Fac Sci, Dept Appl Phys, E-18071 Granada, Spain. Inst Invest Elect, Cuernavaca 62490, Morelos, Mexico. RP Delgado, AV, Univ Granada, Fac Sci, Dept Appl Phys, E-18071 Granada, Spain. EM adelgado@ugr.es NR 45 TC 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0257 J9 J NON-NEWTONIAN FLUID MECH JI J. Non-Newton. Fluid Mech. PD JAN 10 PY 2005 VL 125 IS 1 BP 1 EP 10 DI 10.1016/j.jnnfm.2004.08.004 PG 10 SC Mechanics GA 887BA UT ISI:000226276100001 ER PT J AU Aguilar, J Bouza, P Dorronsoro, C Fernandez, E Fernandez, J Garcia, I Martin, F Simon, M TI Application of remediation techniques for immobilization of metals in soils contaminated by a pyrite tailing spill in Spain SO SOIL USE AND MANAGEMENT LA English DT Article DE pyrite spill; soil pollution; remediation; metal contamination; arsenic; heavy metals; Spain ID AZNALCOLLAR AB Remediation techniques for soil pollution have been studied in the aftermath of a tailing spill from a pyrite-mine holding pond in Aznalcollar (southwest Spain). Given the extent of the accident and the characteristics of the affected area, we conclude that, after the removal of the tailings, the only feasible remediation measure involves chemical immobilization of the pollutants. The best treatment tested proved to be liming in combination with amendment materials such as soils rich in iron oxides and clay. Monitoring for 3 years has demonstrated that the system is effective for reducing the solubility of the most mobile forms of the main pollutant elements, although further monitoring is recommended. C1 Univ Granada, Fac Ciencias, Dpto Edafol & Quim Agr, Granada 18002, Spain. Consejo Nacl Invest Cient & Tecn, Ctr Nacl Patagon, RA-9120 Puerto Madryn, Argentina. RP Aguilar, J, Univ Granada, Fac Ciencias, Dpto Edafol & Quim Agr, Avda Fuentenueva,S-N, Granada 18002, Spain. EM aguilar@ugr.es NR 7 TC 3 PU C A B I PUBLISHING PI WALLINGFORD PA C/O PUBLISHING DIVISION, WALLINGFORD OX10 8DE, OXON, ENGLAND SN 0266-0032 J9 SOIL USE MANAGE JI Soil Use Manage. PD DEC PY 2004 VL 20 IS 4 BP 451 EP 453 DI 10.1079/SUM2004276 PG 3 SC Soil Science GA 887HL UT ISI:000226296400012 ER PT J AU Alvarez-Nodarse, R Atakishiyev, NM Costas-Santos, RS TI Factorization of the hypergeometric-type difference equation on non-uniform lattices: dynamical algebra SO JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL LA English DT Article ID Q-HARMONIC OSCILLATOR; POLYNOMIALS; REALIZATION AB We argue that one can factorize the difference equation of hypergeometric type on non-uniform lattices in the general case. It is shown that in the most cases of q-linear spectrum of the eigenvalues, this directly leads to the dynamical symmetry algebra su(q)(1, 1), whose generators are explicitly constructed in terms of the difference operators, obtained in the process of factorization. Thus all models with the q-linear spectrum (some of them, but not all, previously considered in a number of publications) can be treated in a unified form. C1 Univ Sevilla, Dept Anal Matemat, E-41080 Seville, Spain. Univ Granada, Inst Carlos I Fis & Computac, E-18071 Granada, Spain. UNAM, Inst Matemat, Cuernavaca 62210, Morelos, Mexico. Univ Carlos III Madrid, EPS, Dept Matemat, E-28911 Madrid, Spain. RP Alvarez-Nodarse, R, Univ Sevilla, Dept Anal Matemat, Apdo 1160, E-41080 Seville, Spain. NR 29 TC 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0305-4470 J9 J PHYS-A-MATH GEN JI J. Phys. A-Math. Gen. PD JAN 7 PY 2005 VL 38 IS 1 BP 153 EP 174 PG 22 SC Physics, Multidisciplinary; Physics, Mathematical GA 892KG UT ISI:000226648800014 ER PT J AU Cruz, MDR Morata, D Puga, E Aguirre, L Vergara, M TI Microstructures and interlayering in pyrophyllite from the Coastal Range of central Chile: evidence of a disequilibrium assemblage SO CLAY MINERALS LA English DT Article DE analytical electron microscopy; Andes; Chile; dickite; muscovite; metaclastite; pyrophyllite; structural defects; transmission electron microscopy ID NORWEGIAN CONTINENTAL-SHELF; SYSTEM AL2O3-SIO2-H2O; METAMORPHISM; PARAGONITE; MUSCOVITE; ANDES; EQUILIBRIA; SANDSTONES; PETROLOGY; MINERALS AB Pyrophyllite from a Triassic sedimentary formation from the Coastal Range of Chile has been investigated by transmission/analytical electron microscopy (TEM/AEM). The mineral assemblage includes pyrophyllite, muscovite, paragonite, a kaolin mineral, boehmite, rutile and hematite. The textures indicate that the protolith was a volcanoclastic rock. Petrographic evidence, chemistry, and the mineral assemblage suggest the intense leaching of the parent rock by a weathering process, before the metamorphic episode, to create the protolith for the pyrophyllite. Pyrophyllite always grows from the kaolin mineral, and both phases show close orientation relationships. The presence of parallel intergrowths of pyrophyllite and muscovite indicate that muscovite also grew from the kaolin mineral. Nevertheless, the composition of muscovite suggests that this phase must also form from another precursor, probably Al smectite. The AEM data and textural relationships between pyrophyllite and muscovite reveal the presence of two generations of muscovite and suggest that Na-rich muscovite recrystallized into a Na-free muscovite and paragonite. C1 Univ Malaga, Fac Ciencias, Dept Quim Inorgan Cristalog & Mineral, E-29071 Malaga, Spain. Univ Chile, Dept Geol, Santiago, Chile. UGR, CSIC, Inst Andaluz Ciencias Tierra, Granada 18002, Spain. RP Cruz, MDR, Univ Malaga, Fac Ciencias, Dept Quim Inorgan Cristalog & Mineral, E-29071 Malaga, Spain. EM mdruiz@uma.es NR 42 TC 0 PU MINERALOGICAL SOCIETY PI LONDON PA 41 QUEENS GATE, LONDON SW7 5HR, ENGLAND SN 0009-8558 J9 CLAY MINER JI Clay Min. PD DEC PY 2004 VL 39 IS 4 BP 439 EP 452 DI 10.1180/0009855043940146 PG 14 SC Mineralogy GA 892NT UT ISI:000226658000006 ER PT J AU Alvarez-Lopez, I Llanes-Santiago, O Verdegay, JL TI Drying process of tobacco leaves by using a fuzzy controller SO FUZZY SETS AND SYSTEMS LA English DT Article DE Fuzzy control; tobacco leaves drying process AB This paper presents the first results from a research project devoted to the application of the fuzzy control based technology to the drying process of tobacco leaves, which the authors are carrying out in the province of Pinar del Rio (Cuba). The fuzzy controller here reported has been designed and implemented by means of a fuzzy rule base constructed from the knowledge of the expert curers taking part in the natural drying process. The preliminary results obtained are very promising. (C) 2004 Elsevier B.V. All rights reserved. C1 Univ Granada, Dept Ciencias Computac & Inteligencia Artificial, E-18071 Granada, Spain. ISPJAE, Fac Elect, Dept Automat & Computac, Havana, Cuba. RP Verdegay, JL, Univ Granada, Dept Ciencias Computac & Inteligencia Artificial, Avenida Andalucia 38, E-18071 Granada, Spain. EM verdegay@decsai.ugr.es NR 12 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0114 J9 FUZZY SET SYSTEM JI Fuzzy Sets Syst. PD MAR 16 PY 2005 VL 150 IS 3 BP 493 EP 506 DI 10.1016/j.fss.2004.07.019 PG 14 SC Computer Science, Theory & Methods; Mathematics, Applied; Statistics & Probability GA 892OP UT ISI:000226660200006 ER PT J AU Rodriguez-Rodriguez, M Moreno-Ostos, E De Vicente, I Cruz-Pizarro, L Da Silva, SLR TI Thermal structure and energy budget in a small high mountain lake: La Caldera, Sierra Nevada, Spain SO NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH DT Article DE energy budget; diel variations; time-series analysis; high mountain lake ID PHYTOPLANKTON; RADIATION; BALANCE AB This work examines the diel change of energy storage and its associated patterns of thermal stratification during the ice-free period in a high mountain lake (La Caldera Lake, Sierra Nevada, Spain), in response to meteorological conditions. Bihourly data have been implemented to a standard methodology of surface heat exchange calculations in lakes. Strong variations have been observed on the diverse components of the energy budget at different time scales, ranging from diel to seasonal. Additionally, time-series analyses have been applied to reveal the underlying periodicities involved in relation to the different variables studied. The results obtained from this study provided realistic conditions for the environmental modelling of such processes, which are very sensitive in time scale. C1 Univ Pablo Olavide, Seville 41013, Spain. Univ Granada, Water Res Inst, E-18071 Granada, Spain. Univ Santa Cecilia, BR-11045907 Santos, SP, Brazil. RP Rodriguez-Rodriguez, M, Univ Pablo Olavide, Carretera Utrera Km 1, Seville 41013, Spain. EM mrodrod@dex.upo.es NR 25 TC 3 PU SIR PUBLISHING PI WELLINGTON PA PO BOX 399, WELLINGTON, NEW ZEALAND SN 0028-8330 J9 N Z J MAR FRESHWATER RES JI N. Z. J. Mar. Freshw. Res. PD DEC PY 2004 VL 38 IS 5 BP 879 EP 894 PG 16 SC Fisheries; Marine & Freshwater Biology; Oceanography GA 894EC UT ISI:000226772400013 ER PT J AU Goitia, A Medina, MDR Angulo, JM TI Joint estimation of spatial deformation and blurring in environmental data SO STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT LA English DT Article DE blurring operator; deformation; fractional generalized random field; Kullback-Leibler divergence; landmark; wavelet ID LINEAR INVERSE PROBLEMS; WAVELET SHRINKAGE; RANDOM-FIELDS; KALMAN FILTER; MODELS; REGULARIZATION; APPROXIMATION; RESTORATION; FUSION AB Joint estimation of deformation and blurring parameters from spatial observations is considered. The generalized random field approach to the problem introduced in this paper provides a suitable framework for a technical treatment of these effects in relation to singularity properties of the fields. A mixture of Kullback-Leibler divergence loss functions is formulated in a Bayesian context. Simulations are developed to illustrate the performance of the approach proposed. C1 Univ Granada, Dept Estad & Invest Operat, E-18071 Granada, Spain. Univ Los Andes, Inst Estadist, Merida 5101, Venezuela. RP Angulo, JM, Univ Granada, Dept Estad & Invest Operat, Campus Fuente Nueva S-N, E-18071 Granada, Spain. EM jmangulo@goliat.ugr.es NR 32 TC 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1436-3240 J9 STOCH ENVIRON RES RISK ASSESS JI Stoch. Environ. Res. Risk Assess. PD FEB PY 2005 VL 19 IS 1 BP 1 EP 7 DI 10.1007/s00477-004-0183-7 PG 7 SC Engineering, Environmental; Engineering, Civil; Environmental Sciences; Statistics & Probability; Water Resources GA 894SN UT ISI:000226812000001 ER PT J AU Salas, A Prieto, L Montesino, M Albarran, C Arroyo, E Paredes-Herrera, MR Di Lonardo, AM Doutremepuich, C Fernandez-Fernandez, I de la Vega, AG Alves, C Lopez, CM Lopez-Soto, M Lorente, JA Picornell, A Espinheira, RM Hernandez, A Palacio, AM Espinoza, M Yunis, JJ Perez-Lezaun, A Pestano, JJ Carril, JC Corach, D Vide, MC Alvarez-Iglesias, V Pinheiro, MF Whittle, MR Brehma, A Gomez, J TI Mitochondrial DNA error prophylaxis: assessing the causes of errors in the GEP'02-03 proficiency testing trial SO FORENSIC SCIENCE INTERNATIONAL LA English DT Article DE mtDNA; standardization; collaborative exercise; heteroplasmy; hair shafts; sequence errors; phylogenetic ID ISFH WORKING GROUP; COLLABORATIVE EXERCISES; GEP-ISFG; INTERNATIONAL SOCIETY; FORENSIC GENETICS; SPANISH; MTDNA; PROGRAM; HAIR AB We report the results of the Spanish and Portuguese working group (GEP) of the International Society for Forensic Genetics (ISFG) Collaborative Exercise 2002-2003 on mitochondrial DNA (mtDNA) analysis. Six different samples were submitted to the participating laboratories: four blood stains (M1-M2-M3-M4), one mixture blood sample (M5), and two hair shaft fragments (M6). Most of the labs reported consensus results for the blood stains, slightly improving the results of previous collaborative exercises. Although hair shaft analysis is still carried out by a small number of laboratories, this analysis yielded a high rate of success. On the contrary, the analysis of the mixture blood stain (M5) yielded a lower rate of success; in spite of this, the whole results on M5 typing demonstrated the suitability of mtDNA analysis in mixture samples. We have found that edition errors are among the most common mistakes reported by the different labs. In addition, we have detected contamination events as well as other minor problems, i.e. lack of standarization in nomenclature for punctual and length heteroplasmies, and indels. In the present edition of the GEP-ISFG exercise we have paid special attention to the visual phylogenetic inspection for detecting common sequencing errors. (C) 2004 Elsevier Ireland Ltd. All rights reserved. C1 Univ Santiago de Compostela, Inst Med Legal, Fac Med, Unidad Genet, La Coruna, Galicia, Spain. Comisaria Gen Policia Cient, Secc Biol ADN, Madrid, Spain. Inst Toxicol, Dept Madrid, Biol Sect, Madrid, Spain. Univ Complutense, Fac Med, E-28040 Madrid, Spain. Inst Nacl Toxicol, Secc Biol, Dept Barcelona, Barcelona, Spain. Hosp Dr CG Durand, Banco Nacl Datos Genet, Buenos Aires, DF, Argentina. Hematol Lab, Bordeaux, France. DataGene, Bizkaia, Spain. ADF TecnoGen SL, Madrid, Spain. Univ Porto, Inst Patol & Inmunol, P-4100 Oporto, Portugal. Lab ADN, Direcc Gen Guardia Civil, Madrid, Spain. Inst Toxicol, Dept Sevilla, Secc Biol, Seville, Spain. Univ Granada, Lab Identificat Genet, Dept Legal Med, E-18071 Granada, Spain. Nacl Med Legal, Delegacao Lisboa Inst, Serv Genet & Biol Forense, Lisbon, Portugal. Inst Nacl Toxicol & Ciencias Forenses, Dept Canarias, Tenerife, Spain. Ctr Anal Genet CAGT, Zaragoza, Spain. Unidad Genet Forense, Dept Ciencias Forenses, Costa Rica, Spain. Serv Med Yunis Turbay & Cia, Bogota, Colombia. Univ Pompeu Fabra, Unitat Biol Evolut, Barcelona, Spain. Univ Las Palmas Gran Canaria, Serv Genet Forense, Las Palmas Gran Canaria, Spain. SAU, GENOMICA, Dept Genet Forense, Madrid, Spain. Univ Buenos Aires, Fac Farm & Bioquim, Serv Huellas Digitales Genet, RA-1053 Buenos Aires, DF, Argentina. Inst Med Legal, Serv Biol Forense, Coimbra, Portugal. Inst Med Legal, Serv Biol Forense, Oporto, Portugal. Genom Engn Mol LTD A, Sao Paulo, Brazil. Univ Madeira, Ctr Biol & Geol Sci, P-9000 Funchal, Portugal. Inst Toxicol, Unidad Garantia Calidad, Madrid, Spain. RP Salas, A, Univ Santiago de Compostela, Inst Med Legal, Fac Med, Unidad Genet, La Coruna, Galicia, Spain. EM apimlase@usc.es NR 12 TC 10 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0379-0738 J9 FORENSIC SCI INT JI Forensic Sci.Int. PD MAR 10 PY 2005 VL 148 IS 2-3 BP 191 EP 198 DI 10.1016/j.forsciint.2004.06.008 PG 8 SC Medicine, Legal GA 895EP UT ISI:000226844000014 ER PT J AU Melchiors, KC Correr, CJ Rossignoli, P Pontarolo, R Fernandez-Llimos, F TI Humanistic-outcomes questionnaires in diabetes research and practice SO AMERICAN JOURNAL OF HEALTH-SYSTEM PHARMACY DT Letter C1 Univ Fed Parana, BR-80060000 Curitiba, Parana, Brazil. Univ Pharmacy, Posit Univ Ctr, Curitiba, Parana, Brazil. Univ Granada, Res Grp Pharmaceut Care, Redondela 36800, PO, Spain. RP Melchiors, KC, Univ Fed Parana, BR-80060000 Curitiba, Parana, Brazil. EM f_llimos@medynet.com NR 4 TC 2 PU AMER SOC HEALTH-SYSTEM PHARMACISTS PI BETHESDA PA 7272 WISCONSIN AVE, BETHESDA, MD 20814 USA SN 1079-2082 J9 AMER J HEALTH-SYST PHARM JI Am. J. Health-Syst. Pharm. PD FEB 15 PY 2005 VL 62 IS 4 BP 354 EP 355 PG 2 SC Pharmacology & Pharmacy GA 896QX UT ISI:000226949700004 ER PT J AU Relano, M Beckman, JE Zurita, A Rozas, M Giammanco, C TI The internal dynamical equilibrium of HII regions: A statistical study SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE ISM : HII regions; ISM : kinematics and dynamics; galaxies : individual : NGC 1530, NGC 6951, NGC 3359; galaxies : ISM ID H-II REGIONS; ALPHA VELOCITY WIDTHS; IONIZED-GAS; LUMINOSITY FUNCTIONS; SPIRAL GALAXIES; STAR-FORMATION; GIANT; KINEMATICS; PARAMETERS; DISPERSION AB We present an analysis of the integrated Halpha emission line profiles for the H II region population of the spiral galaxies NGC 1530, NGC 6951 and NGC 3359. We show that similar to70% of the line profiles show two or three Gaussian components. The relations between the luminosity (log L-Halpha) and non-thermal line width (log sigma(nt)) for the H II regions of the three galaxies are studied and compared with the relation found taken all the H II regions of the three galaxies as a single distribution. In all of these distributions we find a lower envelope in log sigma(nt). A clearer envelope in sigma(nt) is found when only those H II regions with sigma(nt) > sigma(s)(13 km s(-1)) are considered, where sigma(s) is a canonical estimate of the sound speed in the interestellar medium. The linear fit for the envelope is log L-Halpha = (36.8 +/- 0.7) + (2.0 +/- 0.5) log sigma(nt) where the Halpha luminosity of the region is taken directly from a photometric H II region catalogue. When the Halpha luminosity used instead is that fraction of the H II region luminosity, corresponding to the principal velocity component, i.e. to the turbulent non-expanding contribution, the linear fit is log L-Halpha = (36.8 +/- 0.6) + (2.0 +/- 0.5) log sigma(nt), i.e. unchanged but slightly tighter. The masses of the H II regions on the envelope using the virial theorem and the mass estimates from the Halpha luminosity are comparable, which offers evidence that the H II regions on the envelope are virialized systems, while the remaining regions, the majority, are not in virial equilibrium. C1 Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Spain. CSIC, Madrid, Spain. Univ Granada, Fac Ciencias, Dept Fis Teor & Cosmos, E-18071 Granada, Spain. Isaac Newton Grp Telescopes, Santa Cruz De La Palma, Canarias, Spain. UNAM, Observ Astron Nacl, Ensenada, Baja California, Mexico. RP Relano, M, Inst Astrofis Canarias, C Via Lactea S-N, E-38200 San Cristobal la Laguna, Spain. EM mpastor@ll.iac.es jeb@ll.iac.es azurita@ugr.es mrozas@astrosen.unam.mx corrado@ll.iac.es NR 43 TC 7 PU E D P SCIENCES PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD FEB PY 2005 VL 431 IS 1 BP 235 EP 251 DI 10.1051/0004-6361:20040483 PG 17 SC Astronomy & Astrophysics GA 897WI UT ISI:000227036100022 ER PT J AU Arrindell, WA Akkerman, A Bages, N Feldman, L Caballo, VE Oei, TPS Torres, B Canalda, G Castro, J Montgomery, I Davis, M Calvo, MG Kenardy, JA Palenzuela, DL Richards, JC Leong, CC Simon, MA Zaldivar, F TI The Short-EMBU in Australia, Spain, and Venezuela - Factorial invariance, and associations with sex roles, self-esteem, and Eysenckian personality dimensions SO EUROPEAN JOURNAL OF PSYCHOLOGICAL ASSESSMENT LA English DT Article DE parenting; EMBU; s-EMBU; cross-cultural comparison; factorial invariance; personality; sex roles; psychometrics ID PARENTAL BONDING INSTRUMENT; CONVERGENT VALIDITY; DUTCH EXPERIENCES; REARING BEHAVIOR; QUESTIONNAIRE; COEFFICIENTS; SIMILARITY; COUNTRIES; STUDENTS; FORM AB The short(s)-EMBU (Swedish acronym for Egna Minnen Betraffande Uppfostran [My memories of upbringing]) consists of 23 items, is based on the early 81-item EMBU, and was developed out of the necessity of having a brief measure of perceived parental rearing practices when the clinical and/or research context does not adequately permit application of time-consuming test batteries. The s-EMBU comprises three subscales: Rejection., Emotional Warmth, and (Over)Protection. The factorial and/or construct validity and reliability of the s-EMBU were examined in samples comprising a total of 1950 students from Australia, Spain, and Venezuela. The data were presented for the three national groups separately. Findings confirmed the cross-national validity of the factorial structure underlying the s-EMBU. Rejection by fathers and mothers was consistently associated with high trait-neuroticism and low self-esteem in recipients of both sexes in each nation, as was high parental emotional warmth with high femininity (humility). The findings on factorial validity are in keeping with previous ones obtained in East Germany, Greece, Guatemala, Hungary, Italy, and Sweden. The s-EMBU is again recommended for use in several different countries as. a reliable, functional equivalent to the original 81-item EMBU. C1 Univ Groningen, Heymans Inst, Dept Clin & Dev Psychol, NL-9712 TS Groningen, Netherlands. Univ Simon Bolivar, Caracas, Venezuela. Univ Granada, Granada, Spain. Univ Queensland, Brisbane, Qld, Australia. Univ Pais Vasco, E-20080 San Sebastian, Spain. Univ Barcelona, Barcelona, Spain. Univ Tasmania, Hobart, Tas, Australia. Univ La Laguna, Tenerife, Spain. Univ Newcastle, Callaghan, NSW, Australia. Univ Salamanca, E-37008 Salamanca, Spain. Curtin Univ Technol, Perth, WA 6001, Australia. No Terr Univ, Darwin, NT, Australia. Univ La Coruna, La Coruna, Spain. Univ Autonoma Madrid, Madrid, Spain. RP Arrindell, WA, Univ Groningen, Heymans Inst, Dept Clin & Dev Psychol, Grote Kruisstr 2-1, NL-9712 TS Groningen, Netherlands. EM w.arrindell@ppsw.rug.nl NR 35 TC 4 PU HOGREFE & HUBER PUBLISHERS PI GOTTINGEN PA ROHNSWEG 25, D-37085 GOTTINGEN, GERMANY SN 1015-5759 J9 EUR J PSYCHOL ASSESS JI Eur. J. Psychol. Assess. PY 2005 VL 21 IS 1 BP 56 EP 66 DI 10.1027//1015-5759.21.1.56 PG 11 SC Psychology, Applied GA 901AJ UT ISI:000227255100006 ER PT J AU Piotrkowski, R Gallego, A Castro, E Garcia-Hernandez, MT Ruzzante, JE TI Ti and Cr nitride coating/steel adherence assessed by acoustic emission wavelet analysis SO NDT & E INTERNATIONAL LA English DT Article DE nitride coatings; acoustic emission; scratch test; wavelet analysis; microfractures ID MECHANISMS; ADHESION AB Wavelet Transform (WT) was applied to Acoustic Emission (AE) signals from scratch tests on stainless steel samples with Cr or Ti nitride coatings obtained by physical vapor deposition, in order to characterize the coating adherence failure mechanisms. The WT, employed to analize the essentially non-stationary AE signals, was adequate to identify different stages of failure (transversal coating microfractures and coating/matrix debonding microfractures), which could be precisely delimited by a unique parameter. (C) 2004 Elsevier Ltd. All rights reserved. C1 Univ Granada, EU Arquitectura Tecn, E-18071 Granada, Spain. Univ Nacl Gen San Martn, EC&T, RA-1653 Buenos Aires, DF, Argentina. Univ Jaen, Dept Fis, Excuela Politecn Super, Jaen 23071, Spain. Comis Nacl Energia Atom, ENDE, RA-1650 Buenos Aires, DF, Argentina. RP Gallego, A, Univ Granada, EU Arquitectura Tecn, E-18071 Granada, Spain. EM antolino@ugr.es NR 19 TC 6 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0963-8695 J9 NDT E INT JI NDT E Int. PD JUN PY 2005 VL 38 IS 4 BP 260 EP 267 DI 10.1016/j.ndteint.2004.09.002 PG 8 SC Materials Science, Characterization & Testing GA 901WY UT ISI:000227314100003 ER PT J AU Gaitan-Cepeda, LA Martinez-Gonzalez, M Ceballos-Salobrena, A TI Oral candidosis as a clinical marker of immune failure in patients with HIV/AIDS on HAART SO AIDS PATIENT CARE AND STDS LA English DT Article ID HIV-INFECTED PATIENTS; ACTIVE ANTIRETROVIRAL THERAPY; HUMAN-IMMUNODEFICIENCY-VIRUS; CD4(+) CELL COUNT; VIRAL LOAD; HAIRY LEUKOPLAKIA; PROTEASE INHIBITORS; PROGNOSTIC VALUE; LESIONS; MANIFESTATIONS AB Oral candidosis (OC) has been proposed as a clinical marker of highly active antiretroviral therapy (HAART) success or failure. The principal objective of this work was to assess whether the presence OC is associated with immunologic or virologic failure in patients with HIV/AIDS undergoing HAART. One hundred fifty-one patients with HIV/AIDS from Regional Hospital "Carlos Haya," Malaga, Spain, were examined orally. All patients had been undergoing HAART for a minimum of 6 months prior to oral examination. OC diagnosis was in accordance with World Health Organization-Centers for Disease Control (WHO-CDC) criteria. Age, gender, route of HIV infection, CD4 lymphocyte counts, and viral load were taken from the medical records. In regard to HAART response the patients were classified as: virologic-responders (viral load <50 copies per milliliter), virologic nonresponders (viral load >50 copies per milliliter); immunologic responders (CD4 cells counts >500 per milliliter), and immunologic nonresponders (CD4 cells counts <500 per milliliter). Prevalence of OC was determined for each group. The presence of OC was closely related to immune failure (p 0.006; odds ratio [OR] 3.38 95% confidence interval [CI] 1.262-12.046) in patients with HIV/AIDS undergoing HAART. The probability of immune failure in the presence of OC was 91% for men who have sex with men, 95.5% for heterosexuals, and 96% for intravenous drug users. In conclusion, OC should be considered a clinical marker of immune failure in patients with HIV/AIDS undergoing HAART. C1 Natl Autonomous Univ Mexico, Sch Dent, Clin & Expt Pathol Dept, Postgrad & Res Div, Mexico City 04510, DF, Mexico. Natl Autonomous Univ Mexico, Sch Dent, Oral Publ Hlth Dept, Postgrad & Res Div, Mexico City 04510, DF, Mexico. Univ Granada, Dept Oral Med, Granada, Spain. RP Gaitan-Cepeda, LA, UNAM, Fac Odontol, Div Estudios Postgrad & Invest, Lab Patol Clin & Expt, Circuito Inst S-N,Ciudad Univ, Mexico City 04510, DF, Mexico. EM lgaitan@servidor.unam.mx NR 25 TC 6 PU MARY ANN LIEBERT INC PI LARCHMONT PA 2 MADISON AVENUE, LARCHMONT, NY 10538 USA SN 1087-2914 J9 AIDS PATIENT CARE STDS JI Aids Patient Care STDS PD FEB PY 2005 VL 19 IS 2 BP 70 EP 77 PG 8 SC Public, Environmental & Occupational Health; Infectious Diseases GA 902KO UT ISI:000227355000002 ER PT J AU Simon, M Martin, F Garcia, I Bouza, P Dorronsoro, C Aguilar, J TI Interaction of limestone grains and acidic solutions from the oxidation of pyrite tailings SO ENVIRONMENTAL POLLUTION LA English DT Article DE tailinas oxidation; pollutants; limestone; coatings; element precipitation ID MINE DRAINAGE; SULFATE WATERS; ADSORPTION; ALUMINUM; SOILS; IRON AB To characterise the coatings formed and to analyse element partitioning between the aqueous and solid phase, suspensions were prepared with four grain sizes of limestone and three different amounts of acidic solution from oxidized pyrite tailings. In all cases, red coatings with three different layers covered the grain surface, sealing off the acidic solution. The inner layer was composed mainly of basaluminite the middle layer of schwertmannite, and the outer layer of gypsum and jarosite. Zn, Cd and TI were co-precipitated by Fe and Al, As and Ph were co-precipitated almost completely by Fe, and Cu formed mainly Cu sulphates. All trace elements reached almost total precipitation at pH 6.3, but the precipitation of As and Pb tended to decrease as the pH rose. Consequently, liming should be calculated so that the soil pH does not exceed 6.3. This calculation should take into account that the armouring of the limestone grains can cause underestimations in the amount of liming material needed. (C) 2004 Elsevier Ltd. All rights reserved. C1 Univ Almeria, ESP CITE IIB, Dept Edafol, Almeria 04120, Spain. Univ Granada, Fac Ciencias, Dept Edafol, Granada 18002, Spain. CONICEF, Ctr Nacl Patagonico, Chubut, Argentina. RP Simon, M, Univ Almeria, ESP CITE IIB, Dept Edafol, Almeria 04120, Spain. EM msimon@ual.es NR 27 TC 6 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0269-7491 J9 ENVIRON POLLUT JI Environ. Pollut. PD MAY PY 2005 VL 135 IS 1 BP 65 EP 72 DI 10.1016/j.envpol.2004.10.013 PG 8 SC Environmental Sciences GA 904IC UT ISI:000227488300007 ER PT J AU Aguilar, MC Gurpegui, M Diaz, FJ De Leon, J TI Nicotine dependence and symptoms in schizophrenia - Naturalistic study of complex interactions SO BRITISH JOURNAL OF PSYCHIATRY LA English DT Article ID SMOKING; TOBACCO; SCALE; SPAIN AB Background Smoking may have a beneficial effect on either schizophrenic symptoms or antipsychotic side-effects, but studies are hampered by the lack of control of confounding factors. Aims To explore the self-medication hypothesis in a large sample of stable outpatients with schizophrenia. Method Symptoms, assessed with the Positive and Negative Syndrome Scale (PANSS), and number of hospitalisations were compared in 250 out-patients with DSM - IV schizophrenia classified into three categories: highly dependent smokers, mildly dependent smokers and non-smokers. Log-linear analysis was used to control for potential confounding and interacting variables. Results High PANSS total scores and positive symptoms were less frequent in mildly dependent smokers than in nonsmokers or highly dependent smokers. The highly dependent smokers had the worst outcome. Conclusions The data do not generally support the self-medication hypothesis but rather suggest a complex interaction between nicotine dependence and schizophrenic symptoms. Declaration of interest None. Funding detailed in Acknowledgements. C1 Univ Granada, Dept Psychiat, Fac Med, E-18071 Granada, Spain. Univ Granada, Inst Neurosci, E-18071 Granada, Spain. Univ Nacl, Dept Stat, Medellin, Colombia. Eastern State Hosp, Mental Hlth Res Ctr, Lexington, KY USA. RP Gurpegui, M, Univ Granada, Dept Psychiat, Fac Med, Av Madrid 2, E-18071 Granada, Spain. EM gurpegui@ugr.es NR 27 TC 21 PU ROYAL COLLEGE OF PSYCHIATRISTS PI LONDON PA BRITISH JOURNAL OF PSYCHIATRY 17 BELGRAVE SQUARE, LONDON SW1X 8PG, ENGLAND SN 0007-1250 J9 BRIT J PSYCHIAT JI Br. J. Psychiatry PD MAR PY 2005 VL 186 BP 215 EP 221 PG 7 SC Psychiatry GA 906FW UT ISI:000227627000009 ER PT J AU Gallego, A Gil, JF Vico, JM Ruzzante, JE Piotrkowski, R TI Coating adherence in galvanized steel assessed by acoustic emission wavelet analysis SO SCRIPTA MATERIALIA LA English DT Article DE coatings; galvanized steel; acoustic emission; scratch test; wavelet analysis ID ADHESION; CORROSION; CRACKING; TI AB Coating substrate adherence in galvanized steel is evaluated by acoustic emission wavelet analysis in scratch tests on hot-dip galvanized samples. The acoustic emission results are compared with optical and electron microscopy observations in order to understand coating features related to adherence and to establish criteria aimed at improving the manufacture process. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 Univ Granada, EU Arquitectura Tecn, E-18071 Granada, Spain. Comis Nacl Energia Atom, ENDE, RA-1650 Buenos Aires, DF, Argentina. Univ Nacl Gen San Martin, ECyT, RA-1653 Buenos Aires, DF, Argentina. RP Gallego, A, Univ Granada, EU Arquitectura Tecn, E-18071 Granada, Spain. EM antolino@ugr.es NR 15 TC 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6462 J9 SCRIPTA MATER JI Scr. Mater. PD MAY PY 2005 VL 52 IS 10 BP 1069 EP 1074 DI 10.1016/j.scriptamat.2005.01.037 PG 6 SC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering GA 909HN UT ISI:000227851100022 ER PT J AU Gurpegui, M Aguilar, MC Martinez-Ortega, JM Diaz, FJ de Leon, J TI Caffeine intake in outpatients with schizophrenia SO SCHIZOPHRENIA BULLETIN LA English DT Article DE caffeine; coffee; schizophrenia; tobacco smoking; nicotine; alcohol ID CHRONIC PSYCHIATRIC-PATIENTS; SUBSTANCE-ABUSE; NICOTINE DEPENDENCE; COFFEE CONSUMPTION; WATER-INTOXICATION; TOBACCO SMOKING; INPATIENTS; ALCOHOL; POPULATION; POLYDIPSIA AB Several studies suggest that caffeine intake is high in patients with schizophrenia and a few of them suggest that caffeine may contribute to schizophrenia symptomatology. None of these studies control for the effect of tobacco smoking, which is associated with induction of caffeine metabolism. Therefore, the high amount of caffeine intake among patients with schizophrenia may be due to their high prevalence of smoking. This is the first large study to explore whether caffeine intake in patients with schizophrenia is related to tobacco (or alcohol) use or to the severity of schizophrenia symptomatology. The sample included 250 consecutive consenting outpatients with a diagnosis of DSM-IV schizophrenia from Granada, Spain. Fifty-nine percent (147/250) of patients consumed caffeine. Current caffeine intake was associated with current smoking and alcohol use. As none of the females used alcohol, the association with alcohol was only present in males with schizophrenia. Among caffeine consumers, smoking was associated with the amount of caffeine intake. Cross-sectional schizophrenia symptomatology was not associated with caffeine intake. C1 Eastern State Hosp, Mental Hlth Res Ctr, Lexington, KY 40508 USA. Univ Granada, Dept Psychiat, E-18071 Granada, Spain. Univ Granada, Inst Neurosci, E-18071 Granada, Spain. Univ Nacl, Dept Stat, Medellin, Colombia. RP de Leon, J, Eastern State Hosp, Mental Hlth Res Ctr, 627 W 4th St, Lexington, KY 40508 USA. EM jdeleon@uky.edu NR 78 TC 8 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPERINTENDENT DOCUMENTS,, WASHINGTON, DC 20402-9325 USA SN 0586-7614 J9 SCHIZOPHRENIA BULL JI Schizophr. Bull. PY 2004 VL 30 IS 4 BP 935 EP 945 PG 11 SC Psychiatry GA 910FN UT ISI:000227916000023 ER PT J AU Gonzalez, G Urena, A Llop, F Garcia, JM Martin, A Navarro, F TI Physiological characteristics of libero and central volleyball players SO BIOLOGY OF SPORT LA English DT Article DE volleyball; physical effort; heart rate; blood lactate libero; central players ID EXERCISE; COMPETITION; PROFILE; TENNIS; SEASON; SOCCER AB The aim of this study is to determine the intensity of effort in competition of the libero and central players by measuring heart rate and blood lactate. A sample of 30 players from 10 teams was used. Heart rate was measured by telemetry during the matches. Blood samples were obtained when there were substitutions for the players and about 300 samples were taken. Significant differences were observed in mean and maximal heart rate values between the central players and the libero (p < 0.01). Mean and maximal heart rate values tended to decrease in the last sets in all the positions analysed. Higher levels have been observed in the libero when the set is lost than when it is won. (p < 0.01). With regard to blood lactate, significant differences were found in mean values between the two central players and the libero (p < 0.01). It was observed that 40.9% of all the blood lactate concentrations, regardless of the position, corresponded to values higher than 4 mmol(.)1(-1), and 2.8% were above 8 mmol(.)1(-1). These values are far higher than those found in earlier studies. C1 Univ Castilla La Mancha, Fac Sports Sci Toledo, La Mancha, Spain. Univ Granada, Fac Phys Activ & Sports Sci, Granada, Spain. RP Gonzalez, G, Fac Ciencias Deporte Toledo, Campus Tecnol Antigua Fabrica Armas,Avda Carlos 3, Toledo, Spain. EM cristina.gonzalez@uclm.es NR 40 TC 0 PU INST SPORT PI WARSAW 45 PA TRYLOGII 2, POB 30,, 01-892 WARSAW 45, POLAND SN 0860-021X J9 BIOL SPORT JI Biol. Sport PY 2005 VL 22 IS 1 BP 13 EP 27 PG 15 SC Sport Sciences GA 913MN UT ISI:000228156000002 ER PT J AU Toledano, M Osorio, R Osorio, E Prati, C Carvalho, RM TI Microhardness of acid-treated and resin infiltrated human dentine SO JOURNAL OF DENTISTRY DT Article DE microhardness; human dentine; acid etching ID SODIUM-HYPOCHLORITE TREATMENT; CARIOUS DENTIN; HUMAN ENAMEL; ROOT DENTIN; ADHESIVES; INDENTATION; HARDNESS; PERMEABILITY; ELASTICITY; SUBSTRATE AB Objective. The aim is to determine if superficial or deep dentine microhardness (MH) is affected by different chemical dentine pre-treatments performed for resin bonding. Methods. Dentine discs of superficial (SD) and deep dentine (DD) were obtained by transversally sectioning the crowns of human third molars. Knoop MH was measured after different treatments: (1) polished up to 4000 grit, (2) polished and etched (37% ortophosphoric acid for 15 s), (3) resin (Single Bond -SB-) infiltrated dentine after acid etching, (4) polished, etched and treated with 5% NaOCl for 2 min, (5) resin infiltrated (SB) after etching and NaOCl treatment. For resin infiltrated surfaces care was taken in order to remove the excess adhesive layer, and obtain infiltrated dentine, by measuring thickness of the sample before resin infiltration and polishing after resin infiltration until obtaining the initial thickness of the sample. Indentations (n = 20) were performed on moist surfaces with a standard Knoop MH tester (20 g, 5 s). Data were expressed in Knoop Hardness Numbers (KHN) and analysed by ANOVA and multiple comparisons (P < 0.05). Results. Dentine KHN decreased on both SD and DD after acid etching. NaOCl treatment after acid etching did not affect MH on SD, but KHN of DD was towered. Resin infiltration increased KHN but did not recover the initial MH values in both SD and DD. Conclusions. Treating dentine with either H3PO4 or NaOCl caused marked reduction of its surface hardness and subsequent resin infiltration was not capable to restore it. (c) 2004 Elsevier Ltd. All rights reserved. C1 Univ Granada, Sch Dent, Dept Dent Mat, E-18014 Granada, Spain. Univ Bologna, Dept Dent Sci, Bologna, Italy. Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Sao Paulo, SP, Brazil. RP Toledano, M, Univ Granada, Sch Dent, Dept Dent Mat, Av Fuerzas Armadasn 1,1B, E-18014 Granada, Spain. EM toledano@ugr.es NR 39 TC 9 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0300-5712 J9 J DENT JI J. Dent. PD APR PY 2005 VL 33 IS 4 BP 349 EP 354 DI 10.1016/j.jdent.2004.10.007 PG 6 SC Dentistry, Oral Surgery & Medicine GA 914NR UT ISI:000228235100009 ER PT J AU Barros, M Ferrandez, A Javaloyes, MA Lucas, P TI Relativistic particles with rigidity and torsion in D=3 spacetimes SO CLASSICAL AND QUANTUM GRAVITY DT Article ID GENERAL HELICES; CURVATURE; DYNAMICS; CURVES; ACCELERATION; SPACES; MODEL; TORI AB Models describing relativistic particles, where Lagrangian densities depend linearly on both the curvature and the torsion of the trajectories, are revisited in D = 3 Lorentzian spacetimes with constant curvature. The moduli spaces of trajectories are completely and explicitly determined. Trajectories are Lancret curves including ordinary helices. To get the geometric integration of the solutions, we design algorithms that essentially involve the Lancret program as well as the notions of scrolls and Hopf tubes. The most interesting and consistent models appear in anti-de Sitter spaces, where the Hopf mappings, both the standard and the Lorentzian ones, play an important role. The moduli subspaces of closed solitons in anti-de Sitter settings are also obtained. Our main tool is the isoperimetric inequality in the hyperbolic plane. The mass spectra of these models are also obtained. The main characteristic of the anti-de Sitter space comes from the presence of real gravity, which becomes essential to find some system with only massive states. This fact, on one hand, has no equivalent in flat spaces, where spectra necessarily present tachyonic sectors and, on the other hand, solves an early stated problem. C1 Univ Granada, Dept Geometria & Topol, E-18071 Granada, Spain. Univ Murcia, Dept Matemat, E-30100 Murcia, Spain. Univ Sao Paulo, Inst Matemat & Estatist, Dept Matemat, BR-05508900 Sao Paulo, Brazil. RP Barros, M, Univ Granada, Dept Geometria & Topol, E-18071 Granada, Spain. EM mbarros@ugr.es aferr@um.es majava@ime.usp.br plucas@um.es NR 32 TC 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0264-9381 J9 CLASS QUANTUM GRAVITY JI Class. Quantum Gravity PD FEB 7 PY 2005 VL 22 IS 3 BP 489 EP 513 DI 10.1088/0264-9381/22/3/003 PG 25 SC Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields GA 914XI UT ISI:000228261000004 ER PT J AU Cotik, V Zaliz, RR Zwir, I TI A hybrid promoter analysis methodology for prokaryotic genomes SO FUZZY SETS AND SYSTEMS LA English DT Article DE gene regulation; prokaryotic promoters; RNA polymerase; pattern recognition; time delay neural networks; multi-objective evolutionary algorithms; fuzzy sets ID ARTIFICIAL NEURAL-NETWORKS; ESCHERICHIA-COLI; TRANSCRIPTIONAL REGULATION; SEQUENCES; PROTEIN; RECOGNITION; COMPILATION; PREDICTION; ALIGNMENT; SIGNALS AB One of the big challenges of the post-genomic era is identifying regulatory systems and integrating them into genetic networks. Gene expression is determined by protein-protein interactions among regulatory proteins and with RNA polymerase(s), and protein-DNA interactions of these trans-acting factors with cis-acting DNA sequences in the promoter regions of those regulated genes. Therefore, identifying these protein-DNA interactions, by means of the DNA motifs that characterize the regulatory factors operating in the transcription of a gene, becomes crucial for determining, which genes participate in a regulation process, how they behave and how they are connected to build genetic networks. In this paper. we propose a hybrid promoter analysis methodology (HPAM) to discover complex promoter motifs that combines: the neural network efficiency and ability of representing imprecise and incomplete patterns; the flexibility and interpretability of fuzzy models; and the multi-objective evolutionary algorithms capability to identify optimal instances of a model by searching according to multiple criteria. We test our methodology by learning and predicting the RNA polymerase motif in prokaryotic genomes. This constitutes a special challenge due to the multiplicity of the RNA polymerase targets and its connectivity with other transcription factors, which sometimes require multiple functional binding sites even in close located regulatory regions; and the uncertainty of its motif, which allows sites with low specificity (i.e., differing from the best alignment or consensus) to still be functional. HPAM is available for public use in http://soar-tools.wustl.edu. (c) 2004 Elsevier B.V All rights reserved. C1 Washington Univ, Sch Med, Howard Hughes Med Inst, Dept Mol Microbiol, St Louis, MO 63130 USA. Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Computac, Buenos Aires, DF, Argentina. Univ Granada, Dept Ciencias Computac & Intelegencia Artificial, ETS Ingn Informat, Granada, Spain. RP Zwir, I, Washington Univ, Sch Med, Howard Hughes Med Inst, Dept Mol Microbiol, St Louis, MO 63130 USA. EM vcotik@dc.uba.ar rromero@dc.uba.ar zwir@borcim.wustl.edu NR 42 TC 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0114 J9 FUZZY SET SYSTEM JI Fuzzy Sets Syst. PD MAY 16 PY 2005 VL 152 IS 1 BP 83 EP 102 DI 10.1016/j.fss.2004.10.016 PG 20 SC Computer Science, Theory & Methods; Mathematics, Applied; Statistics & Probability GA 916FP UT ISI:000228371100007 ER PT J AU Fernandez-Toledano, JC Moncho-Jorda, A Martinez-Lopez, F Gonzalez, AE Hidalgo-Alvarez, R TI Short- and long-range topological correlations in two-dimensional aggregation of dense colloidal suspensions SO PHYSICAL REVIEW E LA English DT Article ID CLUSTER-CLUSTER AGGREGATION; 2 DIMENSIONS; FRACTAL AGGREGATION; CELLULAR STRUCTURES; SOAP FROTH; SIMULATIONS; DYNAMICS; GROWTH; CELLS; EVOLUTION AB We have studied the average properties and the topological correlations of computer-simulated two-dimensional (2D) aggregating systems at different initial surface packing fractions. For this purpose, the centers of mass of the growing clusters have been used to build the Voronoi diagram, where each cell represents a single cluster. The number of sides (n) and the area (A) of the cells are related to the size of the clusters and the number of nearest neighbors, respectively. We have focused our paper in the study of the topological quantities derived from number of sides, n, and we leave for a future work the study of the dependence of these magnitudes on the area of the cells, A. In this work, we go beyond the adjacent cluster correlations and explore the organization of the whole system of clusters by dividing the space in concentric layers around each cluster: the shell structure. This method allows us to analyze the time behavior of the long-range intercluster correlations induced by the aggregation process. We observed that kinetic and topological properties are intimately connected. Particularly, we found a continuous ordering of the shell structure from the earlier stages of the aggregation process, where clusters positions approach a hexagonal distribution in the plane. For long aggregation times, when the dynamic scaling regime is achieved, the short- and long-range topological properties reached a final stationary state. This ordering is stronger for high particle densities. Comparison between simulation and theoretical data points out the fact that 2D colloidal aggregation in the absence of interactions (diffusion-limited cluster aggregation regimen) is only able to produce short-range cluster-cluster correlations. Moreover, we showed that the correlation between adjacent clusters verifies the Aboav-Weaire law, while all the topological properties for nonadjacent clusters are mainly determined by only two parameters: the second central moment of number-of-sides distribution mu(2)=Sigma P(n)(n-6)(2) and the screening factor a (defined through the Aboav-Weaire equation). We also found that the values of mu(2) and a calculated for two-dimensional aggregating system are related through a single universal common form a proportional to mu(2)(-0.89), which is independent of the particle concentration. C1 Univ Granada, Fac Ciencias, Dept Fis Aplicada, E-18071 Granada, Spain. Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Cuernavaca 62251, Morelos, Mexico. RP Fernandez-Toledano, JC, Univ Granada, Fac Ciencias, Dept Fis Aplicada, Campus Fuentenueva S-N, E-18071 Granada, Spain. NR 48 TC 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD APR PY 2005 VL 71 IS 4 PN Part 1 AR 041401 DI 10.1103/PhysRevE.71.041401 PG 12 SC Physics, Fluids & Plasmas; Physics, Mathematical GA 921GO UT ISI:000228752400017 ER PT J AU Pagano, S Sans, M Sonora, S Dominguez, V Bertoni, B Cantera, AM Lorente, JA TI A genetic population study of six Y STRS (Y-Plex (TM) 6) in an Uruguayan sample and its comparison with other populations SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE forensic science; DNA typing; population genetics; Y chromosome; Uruguay; DYS393; DYS19; DYS38911; DYS390; DYS391 C1 Univ Granada, Dept Legal Med, Lab Genet Identificat, E-18012 Granada, Spain. Biol Lab, Direcc Nacl Policia Tecn, San Martin 11800, Uruguay. Univ Republica, Fac Humanidades, Secc Antropol Biol, Montevideo 11200, Uruguay. Univ Republica, Fac Med, Catedra Genet, Montevideo, Uruguay. UDELAR, Fac Quim, Catedra Bioquim, Montevideo, Uruguay. RP Lorente, JA, Univ Granada, Dept Legal Med, Lab Genet Identificat, Av Madrid 11, E-18012 Granada, Spain. EM jlorente@ugr.es NR 8 TC 0 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD MAY PY 2005 VL 50 IS 3 BP 703 EP 704 PG 2 SC Medicine, Legal GA 922EI UT ISI:000228818800034 ER PT J AU Mota, AJ Castellanos, E de Cienfuegos, LA Robles, R TI Semiempirical MO approach to the mechanism of the NIS-mediated nucleophilic addition to glycals: multicomponent intermediates as models to tackle reactivity in organic chemistry SO TETRAHEDRON-ASYMMETRY LA English DT Article ID HIGHLY STEREOSELECTIVE SYNTHESIS; CONFORMATIONAL-ANALYSIS; ELECTROPHILIC ADDITION; AB-INITIO; NUCLEOSIDES; OLIGOSACCHARIDES; DISACCHARIDE; EFFICIENT; DENSITY; ANALOGS AB A proposition for the nucleosidation mechanism of five-membered glycals promoted by N-iodo-succinimide (NIS), leading to 2'-deoxy-2'-iodo-beta-nucleosides, is presented herein supported by semiempirical MO calculations. The proposed mechanism goes through the formation of multicomponent molecular intermediates that drastically diminish the total energy values when compared to charged intermediates (via iodonium species). The nucleosidation step was performed establishing either bicomponent (dihydrofuran-NIS) or tricomponent (dihydrofuran-NIS-silylated nucleobase) intermediates. The latter possibility has been shown to be the most likely (according also to DFT calculations), and suggests that the mechanism should take place in a concerted fashion. According to the tricomponent pathway, we have studied the stereoselectivity of the process, finding that the activation energy for the beta-nucleosidation step is between similar to 6 kcal/mol (AM1) and similar to 10 kcal/mol (PM3) more favorable than that of the corresponding alpha-anomer, in agreement with the experimental results. The final step consists in an intramolecular silyl-transfer process accompanied by the NIS cleavage (in a different way depending on the calculation method employed), giving rise to the ultimate formation of N-silyl-succinimide. (C) 2005 Elsevier Ltd. All rights reserved. C1 Univ Granada, Fac Ciencias, Dept Quim Organ, E-18071 Granada, Spain. Natl Autonomous Univ Mexico, Inst Quim, Mexico City 04510, DF, Mexico. RP Mota, AJ, Univ Strasbourg 1, Inst Le Bel, Lab chim Quant & Modelisat Mol, 4 Rue Blaise Pascal, F-67000 Strasbourg, France. EM mota@quantix.u-strasbg.fr NR 52 TC 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0957-4166 J9 TETRAHEDRON-ASYMMETRY JI Tetrahedron: Asymmetry PD MAY 2 PY 2005 VL 16 IS 9 BP 1615 EP 1629 DI 10.1016/j.tetasy.2005.03.010 PG 15 SC Chemistry, Inorganic & Nuclear; Chemistry, Organic; Chemistry, Physical GA 926SI UT ISI:000229142500008 ER PT J AU Bascones, A Noronha, S Gomez, M Mota, P Moles, MAG Dorrego, MV TI Tissue destruction in periodontitis: Bacteria or cytokines fault? SO QUINTESSENCE INTERNATIONAL LA English DT Article DE chemokine; cytokines; immunology; interleukin; lymphocytes; periodontitis ID GINGIVAL CREVICULAR FLUID; ADULT PERIODONTITIS; ACTINOBACILLUS-ACTINOMYCETEMCOMITANS; PROINFLAMMATORY CYTOKINES; PORPHYROMONAS-GINGIVALIS; REFRACTORY PERIODONTITIS; RECEPTOR ANTAGONIST; DIABETES-MELLITUS; MONONUCLEAR-CELLS; IL-6 LEVELS AB The pathogenesis of periodontal disease involves the sequential activation of a great variety of components of the host immune response, primarily acting to defend periodontal tissues against bacterial aggression, but also functioning as mediators of tissue destruction. The expression of the disease results from the interaction of host, microbiological agents, and environmental factors. Leukocytes play a critical role in the pathogenesis of the disease, producing different cytokines, chemokines, and other mediators, thus generating a host defense response, as well as inducing tissue inflammation and bone destruction. The aim of this review is to address the role of some inflammatory mediators in response to bacterial aggression in periodontitis. C1 Univ Complutense Madrid, Sch Dent, Dept Stomatol, E-28040 Madrid, Spain. Univ Complutense Madrid, Sch Med, Dept Biochem & Mol Biol, Madrid, Spain. Univ Granada, Sch Dent, Dept Stomatol, Granada, Spain. Univ Santa Maria & Cent Venezuela, Caracas, Venezuela. RP Bascones, A, Univ Complutense Madrid, Sch Dent, Dept Stomatol, Plaza Ramon & Cajal S-N, E-28040 Madrid, Spain. EM avances@arrakis.es NR 58 TC 4 PU QUINTESSENCE PUBL CO INC PI CAROL STREAM PA 551 NORTH KIMBERLY DR, CAROL STREAM, IL 60188-1881 USA SN 0033-6572 J9 QUINTESSENCE INT JI Quintessence Int. PD APR PY 2005 VL 36 IS 4 BP 299 EP 306 PG 8 SC Dentistry, Oral Surgery & Medicine GA 928WC UT ISI:000229301400008 ER PT J AU Thompson-Chagoyan, OC Maldonado, J Gil, A TI Aetiology of inflammatory bowel disease (IBD): Role of intestinal microbiota and gut-associated lymphoid tissue immune response SO CLINICAL NUTRITION LA English DT Review DE inflammatory bowel disease; intestinal microbiota; intestinal tolerance; probiotics ID ULCERATIVE-COLITIS; CROHNS-DISEASE; ORAL TOLERANCE; MAINTENANCE TREATMENT; BACTEROIDES-VULGATUS; ESCHERICHIA-COLI; LACTOBACILLUS GG; DOUBLE-BLIND; GERM-FREE; T-CELLS AB The aetiology of inflammatory bowel disease (IBD) probably involves a combination of genetic predisposition and environmental factors that may be channelled through an abnormality in gut-barrier function, with a loss of antigen tolerance. Some genetic markers that predispose to inflammatory disease have been identified (alleles DR2, DRB1*0103, DRB1*12 and mutations in the NOD2/CARD15 gene on chromosome 16). Alterations in the pattern of cytokine production by T cell subclasses Leading to loss of tolerance to oral antigens have been documented. Moreover, a number of environmental factors (cigarette smoking, use of non-steroid anti-inflammatory drugs, psychological stress and the presence of the caecal appendix) have been postulated as a trigger of IBD. It has also been suggested that the gut microbiota plays a major role in the development and persistence of IBD, and numerous modifications of intestinal microbiota composition have been identified. As a result, manipulation of the microbiota with antibiotics is a current therapeutic strategy; more recently, however, a number of studies have reported promising results when using probiotic organisms to manipulate gut microbiota composition in order to restore tolerance to microbial antigens of the host's own microbiota. (c) 2005 Elsevier Ltd. All rights reserved. C1 Univ Granada, Fac Pharm, Sch Pharm, Dept Biochem & Mol Biol, E-18071 Granada, Spain. Univ Granada, Fac Med, Dept Pediat, Granada, Spain. Mexican Inst Social Secur, Dept Paediat, Los Venados Gen Hosp, Mexico City, DF, Mexico. RP Gil, A, Univ Granada, Fac Pharm, Sch Pharm, Dept Biochem & Mol Biol, Campus Cartuja, E-18071 Granada, Spain. EM agil@ugr.es NR 76 TC 16 PU CHURCHILL LIVINGSTONE PI EDINBURGH PA JOURNAL PRODUCTION DEPT, ROBERT STEVENSON HOUSE, 1-3 BAXTERS PLACE, LEITH WALK, EDINBURGH EH1 3AF, MIDLOTHIAN, SCOTLAND SN 0261-5614 J9 CLIN NUTR JI Clin. Nutr. PD JUN PY 2005 VL 24 IS 3 BP 339 EP 352 DI 10.1016/j.clnu.2005.02.009 PG 14 SC Nutrition & Dietetics GA 934CX UT ISI:000229685600002 ER PT J AU Gurpegui, M Martinez-Ortega, JM Aguilar, MC Diaz, FJ Quintana, HM de Leon, J TI Smoking initiation and schizophrenia: a replication study in a Spanish sample SO SCHIZOPHRENIA RESEARCH LA English DT Article DE schizophrenia; tobacco; smoking initiation; cumulative hazard curves; survival analysis ID POPULATION AB In a prior US study, schizophrenia vulnerability was associated with higher risk of initiating daily smoking after 20 years of age. A survival analysis of onset age of daily smoking compared 290 controls with 250 consecutive DSM-IV schizophrenia patients from outpatient facilities at an urban catchment area in Spain. After controlling for gender and education, the cumulative hazard curves for smoking initiation age of controls and schizophrenia patients were significantly different. After age 20, smoking initiation rates were higher in all schizophrenia patients (and in 107 schizophrenia patients who started daily smoking at least 5 years before illness onset). (c) 2004 Elsevier B.V. All rights reserved. C1 Univ Granada, Dept Psychiat, E-18071 Granada, Spain. Univ Granada, Inst Neurosci, E-18071 Granada, Spain. Eastern State Hosp, Mental Hlth Res Ctr, Lexington, KY 40508 USA. Univ Nacl, Dept Stat, Medellin, Colombia. Inst Tecnol Metropolitan, Medellin, Colombia. RP de Leon, J, Eastern State Hosp, Mental Hlth Res Ctr, 627 W 4th St, Lexington, KY 40508 USA. EM jdeleon@uky.edu NR 15 TC 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-9964 J9 SCHIZOPHR RES JI Schizophr. Res. PD JUL 1 PY 2005 VL 76 IS 1 BP 113 EP 118 DI 10.1016/j.schres.2004.12.007 PG 6 SC Psychiatry GA 937AR UT ISI:000229897400011 ER PT J AU Murillo, A Vera, JF Heiser, WJ TI A permutation-translation simulated annealing algorithm for L-1 and L-2 unidimensional scaling SO JOURNAL OF CLASSIFICATION LA English DT Article DE unidimensional scaling; simulated annealing; permutation; translation; quadratic assignment ID SYMMETRIC PROXIMITY MATRICES; OPTIMIZATION; SERIATION AB Given a set of objects and a symmetric matrix of dissimilarities between them, Unidimensional Scaling is the problem of finding a representation by locating points on a continuum. Approximating dissimilarities by the absolute value of the difference between coordinates on a line constitutes a serious computational problem. This paper presents an algorithm that implements Simulated Annealing in a new way, via a strategy based on a weighted alternating process that uses permutations and point-wise translations to locate the optimal configuration. Explicit implementation details are given for least squares loss functions and for least absolute deviations. The weighted, alternating process is shown to outperform earlier implementations of Simulated Annealing and other optimization strategies for Unidimensional Scaling in run time efficiency, in solution quality, or in both. C1 Univ Costa Rica, Atlantic Branch, Turrialba, Costa Rica. Univ Granada, Fac Sci, Dept Stat & OR, E-18071 Granada, Spain. Leiden Univ, Fac Social & Behav Sci, Dept Psychol, NL-2300 RA Leiden, Netherlands. RP Murillo, A, Univ Costa Rica, Atlantic Branch, Turrialba, Costa Rica. EM murillof@cariari.ucr.ac.cr jfvera@ugr.es heiser@fsw.leidenuniv.nl NR 23 TC 6 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0176-4268 J9 J CLASSIF JI J. Classif. PY 2005 VL 22 IS 1 BP 119 EP 138 PG 20 SC Mathematics, Interdisciplinary Applications; Psychology, Mathematical GA 938UF UT ISI:000230028200007 ER PT J AU Llodra, JC Rodriguez, A Ferrer, B Menardia, V Ramos, T Morato, M TI Efficacy of silver diamine fluoride for caries reduction in primary teeth and first permanent molars of schoolchildren: 36-month clinical trial SO JOURNAL OF DENTAL RESEARCH LA English DT Article DE clinical trial; dental caries; preventive dentistry; silver diamine fluoride AB We hypothesized that the six-monthly application of silver diamine fluoride (SDF) can arrest the development of caries in the deciduous dentition of six-year-old schoolchildren and prevent caries in their first permanent molars. A prospective controlled clinical trial was conducted on the efficacy of a 38% SDF solution for caries reduction. Four hundred and twenty-five six-year-old children were divided into two groups: One group received SDF solution in primary canines and molars and first permanent molars every 6 mos for 36 mos. The second group served as controls. The 36-month follow-up was completed by 373 children. The mean number of new decayed surfaces appearing in primary teeth during the study was 0.29 in the SDF group vs. 1.43 in controls. The mean of new decayed surfaces in first permanent molars was 0.37 in the SDF group vs. 1.06 in controls. The SDF solution was found to be effective for caries reduction in primary teeth and first permanent molars in schoolchildren. C1 Univ Granada, Sch Dent, Dept Prevent Dent, E-18071 Granada, Spain. Univ Santiago De Cuba, Sch Dent, Inst Med Sci, Santiago, Chile. RP Llodra, JC, Univ Granada, Sch Dent, Dept Prevent Dent, E-18071 Granada, Spain. EM jllodra@hotmail.com NR 11 TC 4 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD AUG PY 2005 VL 84 IS 8 BP 721 EP 724 PG 4 SC Dentistry, Oral Surgery & Medicine GA 947XK UT ISI:000230680400007 ER PT J AU Osorio, R Erhardt, MCG Pimenta, LAF Osorio, E Toledano, M TI EDTA treatment improves resin-dentin bonds' resistance to degradation SO JOURNAL OF DENTAL RESEARCH DT Article DE resin; EDTA; adhesion; dentin; degradation ID SELF-ETCHING PRIMER; DEMINERALIZED HUMAN DENTIN; LONG-TERM DURABILITY; IN-VITRO DEGRADATION; TENSILE PROPERTIES; STRENGTH; COLLAGEN; ADHESIVES; WATER; HYPOCHLORITE AB The existence of unprotected collagen fibrils within the hybrid layer compromises the longevity of restorations. This phenomenon may be avoided if solutions other than strong acids are used for dentin demineralization. The hypothesis to be tested is that bond durability may be improved by EDTA demineralization. Dentin surfaces (human and bovine) were bonded: (1) after phosphoric-acid-etching, and after EDTA demineralization with (2) a total-etch adhesive and (3) a self-etching adhesive. After the teeth were sectioned into beams, half of the specimens were immersed in NaOCl, while the other half was immersed in water. Beams were tested to failure in tension. ANOVA and multiple-comparisons tests were used (P < 0.05). No differences in bond strength were found among the 3 bonding procedures, although bonds made to human molars were 43-61% higher than those to bovine incisors. After NaOCl immersion, only specimens subjected to EDTA demineralization maintained the initial bond strength. We conclude that the collagen network is better-preserved after EDTA demineralization. C1 Univ Granada, Sch Dent, Dept Dent Mat, Granada, Spain. Univ Campinas, Sch Dent, Dept Restorat Dent, Sao Paulo, Brazil. RP Toledano, M, Avda Fuerzas Armadas 1,1B, E-18014 Granada, Spain. EM toledano@ugr.es NR 30 TC 6 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD AUG PY 2005 VL 84 IS 8 BP 736 EP 740 PG 5 SC Dentistry, Oral Surgery & Medicine GA 947XK UT ISI:000230680400010 ER PT J AU Montoya, JEZ Ramirez, MH Ospina, GM TI Effect of a magnetic field on an aereated Saccharomyces cerevisiae culture SO INTERCIENCIA DT Article ID FREQUENCY ELECTROMAGNETIC-FIELD; GROWTH; MICROORGANISMS AB The growth of a Saccharomyces cerevisiae culture in cane molasses was evaluated under the action of a variable magnetic field (MF) of high frequency and very low flux density. Cultures growing tinder MF action were compared against cultures in normal environment (control). Tests were performed in 400ml reactors at 25 degrees C. The air flux in the reactors was approximately 1 vvm. A 100kHz MF of 250mG was applied for 200s. Results show that the MF can stimulated culture growth with and without aeration and that there is a limit for the stimulation over which growing inhibition appears. Under certain conditions, the culture presents a sort of adaptation to the MF action and the yeast can overcome the inhibition. It was noticed that MF affects substrate consumption, which means that under certain conditions MF treated micro-organisms can make better use of the substrate. Culture aeration interacts with the MF effect on growth and substrate consumption. After application on a single MF treatment to the yeast culture, it was noticed that after 25h the culture showed a 14.4% growth increment compared to the control. Also, substrate consumption by the treated culture was lower than in the control culture. C1 Univ Antioquia, Fac Ingn, Medellin, Antioquia, Colombia. Univ Nacl Colombia, Bogota, Colombia. Univ Granada, Granada, Spain. Univ Fed Rio de Janeiro, BR-21941 Rio De Janeiro, Brazil. RP Montoya, JEZ, AA 1226, Medellin, Colombia. EM joseedgar@epm.net.co gmoreno@udea.edu.co NR 26 TC 0 PU INTERCIENCIA PI CARACAS PA APARTADO 51842, CARACAS 1050A, VENEZUELA SN 0378-1844 J9 INTERCIENCIA JI Interciencia PD JUL PY 2005 VL 30 IS 7 BP 409 EP 413 PG 5 SC Multidisciplinary Sciences GA 949OF UT ISI:000230797300005 ER PT J AU Mota, AJ Castellanos, E de Cienfuegos, LA Robles, R TI Semiempirical MO approach to the mechanism of the NIS-mediated nucleophilic addition to glycals: multicomponent intermediates as models to tackle reactivity in organic chemistry (vol 16, pg 1615, 2005) SO TETRAHEDRON-ASYMMETRY LA English DT Correction C1 Univ Granada, Fac Ciencias, Dept Quim Organ, E-18071 Granada, Spain. Natl Autonomous Univ Mexico, Inst Quim, Mexico City 04510, DF, Mexico. RP Mota, AJ, Univ Strasbourg 1, Inst Le Bel, Lab Chim Quant & Modelisat Mol, 4 Rue Blaise Pascal, F-67000 Strasbourg, France. EM mota@quantix.u-strasbg.fr NR 1 TC 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0957-4166 J9 TETRAHEDRON-ASYMMETRY JI Tetrahedron: Asymmetry PD JUL 4 PY 2005 VL 16 IS 13 BP 2351 EP 2352 DI 10.1016/j.tetasy.2005.06.019 PG 2 SC Chemistry, Inorganic & Nuclear; Chemistry, Organic; Chemistry, Physical GA 950TF UT ISI:000230879800024 ER PT J AU Neira-Otero, P Munoz-Saldias, N Sanchez-Moreno, M Rosales-Lombardo, MJ TI Molecular characterization of Cryptosporidium species and genotypes in Chile SO PARASITOLOGY RESEARCH LA English DT Article ID PARVUM; IDENTIFICATION; TRANSMISSION; PARASITES AB Knowledge of species and genotypes on Cryptosporidium involved in human transmission is fundamental in studying the epidemiology of cryptosporidiosis. This is the first study in molecular epidemiology of cryptosporidiosis that has been made in Chile. Cryptosporidium parvum species and genotypes involved in human and bovine cryptosporidiosis were determined by PCR-RFLP. Low prevalence of Cryptosporidium was found in humans and cattle. Of the 127 cattle studied, only in one was C. parvum detected . Of the 68 human fecal samples studied, four contained Cryptosporidium: two patients presented Cryptosporidium hominis and two C. parvum. Our results confirm that anthroponotic transmission is as common as zoonotic in Chile. These data can enable the establishment of the corresponding prevention and treatment measures. C1 Univ Granada, Fac Ciencias, Dept Parasitol, Inst Biotecnol, E-18071 Granada, Spain. Univ Valparaiso, Fac Med, Escuela Med, Catedra Parasitol, Valparaiso, Chile. RP Rosales-Lombardo, MJ, Univ Granada, Fac Ciencias, Dept Parasitol, Inst Biotecnol, E-18071 Granada, Spain. EM mjrosale@ugr.es NR 26 TC 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0932-0113 J9 PARASITOL RES JI Parasitol. Res. PD AUG PY 2005 VL 97 IS 1 BP 63 EP 67 DI 10.1007/s00436-005-1391-x PG 5 SC Parasitology GA 958CC UT ISI:000231421300010 ER PT J AU Oller-Lopez, JL Rodriguez, R Cuerva, JM Oltra, JE Bazdi, B Dahdouh, A Lamarti, A Ibn Mansour, A TI Composition of the essential oils of Cistus ladaniferus and C-monspeliensis from Morocco SO JOURNAL OF ESSENTIAL OIL RESEARCH LA English DT Article DE Cistus ladaniferus var. maculatus; Cistus monspeliensis; Cistaceae; essential oil composition; 13-epi-manoyl oxide ID GC-MS; LEAVES AB The essential oils of Cistus ladaniferus L. var. maculatus Dun. and Cistus monspeliensis L., harvested from northern Morocco, have been analyzed by GC-FID, GC/MS, and NMR techniques. The main components of C. ladaniferus were bornyl acetate, pinocarveol, and viridiflorol, whereas the main component from C. monspeliensis was the oxygenated labdane diterpenoid 13-epi-manoyl oxide. C1 Univ Granada, Fac Sci, Dept Organ Chem, E-18071 Granada, Spain. Univ Granada, Fac Sci, Inst Biotechnol, E-18071 Granada, Spain. Univ Abdelmalek Essaadi, Fac Sci, Tetouan 93000, Mexico. RP Oltra, JE, Univ Granada, Fac Sci, Dept Organ Chem, Campus Fuentenueva S-N, E-18071 Granada, Spain. NR 17 TC 0 PU ALLURED PUBL CORP PI CAROL STREAM PA 362 S SCHMALE RD, CAROL STREAM, IL 60188-2787 USA SN 1041-2905 J9 J ESSENT OIL RES JI J. Essent. Oil Res. PD SEP-OCT PY 2005 VL 17 IS 5 BP 553 EP 555 PG 3 SC Chemistry, Applied; Food Science & Technology GA 959UP UT ISI:000231545100026 ER PT J AU Neira, P TI Molecular diagnosis of Cryptosporidium spp SO REVISTA MEDICA DE CHILE LA Spanish DT Letter C1 Univ Valparaiso, Fac Med, Dept Preclin, Catedra Parasitol, Valparaiso, Chile. Univ Granada, Inst Biotecnol, E-18071 Granada, Spain. Univ Valparaiso, Escuela Med, Valparaiso, Chile. RP Neira, P, Univ Valparaiso, Fac Med, Dept Preclin, Catedra Parasitol, Valparaiso, Chile. NR 6 TC 0 PU SOC MEDICA SANTIAGO PI SANTIAGO 9 PA BERNARDA MORIN 488 PROVIDENCIA, CASILLA 168 CORREO 55, SANTIAGO 9, CHILE SN 0034-9887 J9 REV MED CHILE JI Rev. Medica Chile PD JUL PY 2005 VL 133 IS 7 BP 847 EP 849 PG 3 SC Medicine, General & Internal GA 961IH UT ISI:000231654900014 ER PT J AU Pagano, S Sans, M Pimenoff, V Cantera, AM Alvarez, JC Lorente, JA Peco, JM Mones, P Sajantila, A TI Assessment of HV1 and HV2 mtDNA variation for forensic purposes in an Uruguayan population sample SO JOURNAL OF FORENSIC SCIENCES LA English DT Editorial Material DE forensic science; DNA typing; population genetics; mtDNA; Uruguay; Hv1; Hv2 C1 Univ Granada, Dept Legal Med, E-18012 Granada, Spain. UDELAR, Fac Quim, Catedra Bioquim, Montevideo, Uruguay. Univ Helsinki, Dept Forens Med, Lab Forens Biol, SF-00300 Helsinki, Finland. Univ Republica, Fac Humanidades, Secc Antropol Biol, Montevideo 11200, Uruguay. Direcc Nacl Policia Tecn, Biol Lab, Montevideo 11800, Uruguay. RP Lorente, JA, Univ Granada, Dept Legal Med, Av Madrid 11, E-18012 Granada, Spain. EM jlorente@ugr.es NR 3 TC 1 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD SEP PY 2005 VL 50 IS 5 BP 1239 EP 1242 PG 4 SC Medicine, Legal GA 961KE UT ISI:000231660300039 ER PT J AU Pappen, AF Bravo, M Gonzalez-Lopez, S Gonzalez-Rodriguez, MP TI An in vitro study of coronal leakage after intraradicular preparation of cast-dowel space SO JOURNAL OF PROSTHETIC DENTISTRY DT Article ID ENDODONTICALLY TREATED TEETH; OBTURATED ROOT CANALS; APICAL SEAL; GUTTA-PERCHA; MICROLEAKAGE; FILLINGS; RESTORATION; PENETRATION; IMMEDIATE; POSTS AB Statement of problem. Coronal leakage call produce contamination of periapical tissues, resulting in endodontic failure. Purpose. The purpose of this in vitro Study was to evaluate the ability of 2 sealers to prevent coronal leakage in canals filled with gutta-percha and prepared for cast dowels but Without coronal sealing. Material and methods. The crowns of 60 extracted single-rooted teeth were amputated, The root canals were prepared corono-apically and filled With gutta-percha cones and 1 of 2 different endodontic sealers: a resin-based sealer (AH Plus) and a calcium hydroxide-based sealer (Scalapex), Specimens were then stored ill water for 7 days to allow the sealers to set. The specimens were prepared in I of 2 ways: no preparation for cast dowel or preparation of cast-dowel space (n = 15), External surfaces of the roots were sealed with cyanoacrylate cement. The teeth were thermal cycled at 5 degrees and 55 degrees C in water baths (dwell time = 30 seconds) for 500 cycles. Specimens were then Submerged in 2% methylene blue colorant for 24 hours, Microleakage was measured according to the percentage of area stained with the colorant. Effects of each factor cast-dowel preparation and type of sealant) on microleakage were analyzed by the Student t test (alpha=.05), Results. The AH Plus and Sealapex sealers with cast-dowel preparation resulted in significantly (P. 001) more leakage compared to sealers with no dowel preparation. Conclusion. Cast dowel-space preparation had a negative influence on the scaling ability of the remnant root-canal filling material. C1 Univ Fed Pelotas, Sch Dent, Dept Endodont, Rio Grande Do Sul, Brazil. Univ Granada, Sch Dent, Dept Prevent Med, Granada, Spain. Univ Granada, Sch Dent, Dept Dental Pathol & Therapeut, Granada, Spain. RP Gonzalez-Lopez, S, Univ Granada, Sch Dent, Dept Prevent Dent & Infect, E-18071 Granada, Spain. EM sglopez@usr.es NR 27 TC 4 PU MOSBY, INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 USA SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD SEP PY 2005 VL 94 IS 3 BP 214 EP 218 DI 10.1016/j.prosdent.2005.05.022 PG 5 SC Dentistry, Oral Surgery & Medicine GA 962OS UT ISI:000231742700003 ER PT J AU Borquez, SS Gonzalez, FT Hita, JMC CA PSICOST Grp TI Estimation of mental health care cost units for patients with schizophrenia SO ACTAS ESPANOLAS DE PSIQUIATRIA LA English DT Article DE health care; costs; shizophrenia ID CASE REGISTER; PSYCHIATRIC-CARE; COMMUNITY; SERVICES; AREAS; SPAIN AB Introduction. The disease-cost study, based on the study of cohorts of patients through their visits to the mental health system, requires knowledge on the cost of each health care unit. However, lack of standardized procedures limits the external validity of the results obtained. When methodological information regarding the procedures applied is available, it makes it possible to compare the internal validity and to understand the suppositions on which the cost estimations have been made. Method. Cost-units for the health care received by a cohort of patients diagnosed of schizophrenia were estimated. The study was performed by a community-based team and at several hospital premises belonging to the Andalusia Health Service. A sensitivity analysis was conducted whenever necessary. Results. Both in inpatients and outpatients care, personnel represents the biggest cost, this proportion being higher within the outpatient care. Among the professional categories the care given by the psychiatrists is the most expensive. Time load is similar for the different categories except for the psychiatrist. Conclusions. Cost unit estimates are lower than that which has been published internationally and within Spain. However, the findings must be carefully considered due to the influence that the different methodological options may have. C1 Concepcion Univ, Dept Psychiat & Mental Hlth, Concepcion, Chile. Univ Granada, Legal Med Psychiat & Toxicol Dept, Granada, Spain. Pub Univ Navarra, Dept Econ, PSICOST Grp, Navarra, Spain. RP Borquez, SS, Concepcion Univ, Dept Psychiat & Mental Hlth, Casilla 160-C, Concepcion, Chile. EM ssaldivi@udec.cl NR 17 TC 0 PU S T M EDITORES, S A PI BARCELONA PA PASEO DE GRACIA 25, 3, 08007 BARCELONA, SPAIN SN 1139-9287 J9 ACTAS ESP PSIQUIATRIA JI Actas Esp. Psiquiatri. PD SEP-OCT PY 2005 VL 33 IS 5 BP 280 EP 285 PG 6 SC Neurosciences; Psychiatry GA 962QJ UT ISI:000231747000002 ER PT J AU Calvo, F Moreno, B Zamorano, M Szanto, M TI Environmental diagnosis methodology for municipal waste landfills SO WASTE MANAGEMENT LA English DT Article AB A large number of countries are involved in a process of transformation with regard to the management of municipal solid waste. This process is a consequence of environmental requirements that occasionally materialise in legislation, such as the European Council Directive 31/99/EC on waste release in the European Union. In some cases, the remediation of old landfills can be carried out in compliance with environmental requirements; in other cases, it is necessary to proceed with the closure of the landfill and to assimilate it into its own environment. In both cases, it is necessary to undertake a diagnosis and characterisation of the impacted areas in order to develop an adequate action plan. This study presents a new methodology by which environmental diagnosis of landfill sites may be carried out. The methodology involves the formulation of a series of environmental indeces which provide information concerning the potential environmental problems of the landfills and the particular impact on different environmental elements, as well as information related to location, design and operation. On the basis of these results, it would be possible to draw up action plans for the remediation or closure of the landfill site. By applying the methodology to several landfills in a specific area, it would be possible to prioritize the order of actions required. (C) 2005 Elsevier Ltd. All rights reserved. C1 Univ Granada, Dept Civil Engn, ETSICCP, E-18071 Granada, Spain. Univ Granada, Inst Water Res, E-18071 Granada, Spain. Pontificia Univ Catolica Valparaiso, Valparaiso, Chile. RP Zamorano, M, Univ Granada, Dept Civil Engn, ETSICCP, Campus Fuentenueva S-N, E-18071 Granada, Spain. EM zamorano@ugr.es NR 27 TC 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-053X J9 WASTE MANAGEMENT JI Waste Manage. PY 2005 VL 25 IS 8 BP 768 EP 779 DI 10.1016/j.wasman.2005.02.019 PG 12 SC Engineering, Environmental; Environmental Sciences GA 963GX UT ISI:000231793200002 ER PT J AU Villagran, ME Marin, C Rodriguez-Gonzalez, I De Diego, JA Sanchez-Moreno, M TI Use of an iron superoxide dismutase excreted by Trypanosoma cruzi in the diagnosis of Chagas disease: Seroprevalence in rural zones of the state of Queretaro, Mexico SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID PHYTOMONAS; PURIFICATION AB Four iron superoxide dismutase (SODI, SODII, SODIII, and SODIV) activities with pI values of 6.9, 6.8, 5.25, and 3.8, respectively, were isolated from epimastigote forms of the Maracay strain of Trypanosoma cruzi cultivated at 28 degrees C in Grace's medium supplemented with 10% heat-inactivated fetal bovine serum. The activity of SODe (pI 3.8), which coincides with that of SODIV, was detected in Grace's medium without serum in which T. cruzi epimastigotes were cultivated for 24 hours at 28 degrees C. SODe, which was excreted into the medium by the parasite, was immunogenic and antibodies to SODe were detected in serum to a dilution of 1:2,500 by Western blot. The role of SODe is related to the establishment of the parasite within the host, and its high immunogenicity and specificity make it a useful molecular marker in diagnosing infection with this parasite. To validate a Western blot result using SODe as a antigen fraction, 1,029 sera of individuals from 11 municipalities in the state of Queretaro, Mexico were analyzed. Sampling was done randomly and results were compared with those for the same sera with three conventional serologic methods: an enzyme-linked immunosorbent assay (ELISA), indirect hemagglutination (IHA), and an indirect immunofluorescence assay (IFA) to detect antibodies to T cruzi SODe. Samples that were positive by these three techniques were also positive by the Western blot method. The seroprevalence values for SODe (8.16% by ELISA and Western blot) in Queretaro were considerably higher than those reported in regions of Mexico considered to be endemic for Chagas disease. These results support the use of SODe in the serodiagnosis of Chagas disease. C1 Univ Granada, Fac Ciencias, Inst Biotecnol, Dept Parasitol, Granada, Spain. Univ Autonoma Queretaro, Fac Quim, Lab Tripanosomiasis Amer, Queretaro, Mexico. Univ Autonoma Madrid, Fac Med, Dept Med Prevent & Salud Publ, Unidad Parasitol & Med Trop, E-28049 Madrid, Spain. RP Sanchez-Moreno, M, Univ Granada, Fac Ciencias, Inst Biotecnol, Dept Parasitol, Granada, Spain. EM msanchem@ugr.es NR 31 TC 6 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DR, STE 130, MCLEAN, VA 22101 USA SN 0002-9637 J9 AMER J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD SEP PY 2005 VL 73 IS 3 BP 510 EP 516 PG 7 SC Public, Environmental & Occupational Health; Tropical Medicine GA 965ZX UT ISI:000231990500009 ER PT J AU Contreras-Jurado, C Sanchez-Morito, N Ruiz-Contreras, A Gonzalez-Martinez, MT Soler-Diaz, A TI Evidence for simultaneous 1Na(+): 1Mg(2+) and ping pong 2Na(+): 1Mg2+exchangers in rat thymocytes SO FRONTIERS IN BIOSCIENCE LA English DT Article DE Na/Mg exchange; ping pong exchanger; simultaneous exchanger; amiloride; thymocytes ID RED-BLOOD-CELLS; INTRACELLULAR CA2+ STORES; PLASMA-MEMBRANE; MAGNESIUM TRANSPORT; MG2+ TRANSPORTERS; NA+/MG2+ ANTIPORT; NA+; EXCHANGE; MECHANISMS; EFFLUX AB Rat thymocytes showed two Na+/ Mg2+ exchangers with high- and low- affinities for external Na+ ( Na-o(+)) at physiological internal Mg2+ content. The total internal Mg2+ content ( Mg2+ (it)) was enhanced by loading with MgCl2 and the ionophore A- 23187. Under these conditions, Na+/ Mg2+ exchangers were dramatically stimulated by the Mg2+ (it) increase. Na+- induced Mg2+ effluxes were independent of Cl-o(-) or H+. The Na+/ Mg2+ exchangers, which we named HANao ( high affinity for Na-o(+)) and LANao ( low affinity for Na-o(+)), were dissected in Mg2+- loaded thymocytes according to their kinetics and stoichiometries. HANao, which showed an apparent dissociation constant for Na-o(+) ( K-Na H) = 9.2 +/- 1.6 mmol l(-1) Na-o(+) and a maximal Na+ influx rate ( V-Na( Na (H)) (max)) = 30.5 +/- 6.1 mmol ( 1 cells)(-1) h(-1), was a 1Na(+): 1Mg(2+) simultaneous antiporter insensitive to external magnesium ( Mg-o(2+)) whereas that LANao, with K-Na (L) = 65.1 +/- 8.6 mmol l(-1) Na+ and a V-Na( Na (L)) (max) = 79.5 +/- 14.3 mmol ( l cells)(-1) Na+ h(-1), was a 2Na(+): 1Mg(2+) " ping- pong" antiporter which was strongly inhibited by Mg-o(2+). At physiological concentration of Mg-o(2+) ( 1 mM), the Na+/ Mg2+ exchange through the LANao was inhibited by similar to 50%. Amiloride ( 10(-4) M) inhibited at similar extent both Na+ and Mg2+ fluxes at high and at low Na-o(+). C1 Univ Madrid, Fac Med, Dept Fisiol, E-18012 Granada, Spain. Univ Nacl Autonoma Mexico, Fac Med, Dept Farmacol, Mexico City 04510, DF, Mexico. Univ Granada, Inst Biotecnol, E-18071 Granada, Spain. RP Soler-Diaz, A, Univ Madrid, Fac Med, Dept Fisiol, Avda Madrid 13, E-18012 Granada, Spain. EM agasoler@ugr.es NR 36 TC 1 PU FRONTIERS IN BIOSCIENCE INC PI MANHASSET PA C/O NORTH SHORE UNIV HOSPITAL, BIOMEDICAL RESEARCH CENTER, 350 COMMUNITY DR, MANHASSET, NY 11030 USA SN 1093-9946 J9 FRONT BIOSCI JI Front. Biosci. PD MAY 1 PY 2005 VL 10 BP 1693 EP 1706 PG 14 SC Biochemistry & Molecular Biology; Cell Biology GA 970OP UT ISI:000232319800060 ER PT J AU Fernandez-Ibanez, F Perez-Lopez, R Martinez-Diaz, JJ Paredes, C Giner-Robles, JL Caselli, AT Ibanez, JM TI Costa Recta beach, Deception Island, West Antarctica: a retreated scarp of a submarine fault? SO ANTARCTIC SCIENCE LA English DT Article DE active tectonics; fault escarpment; straight coast; tectonic geomorphology; uplifted terraces ID SOUTH SHETLAND ISLANDS; BAY BEACHES; VOLCANO AB Deception Island (South Shetlands, Antarctica) is one of the most active volcanoes in Antarctica, having erupted recently in 1967, 1969 and 1970, damaging scientific stations on the island. It is also seismically very active. The island has attracted the attention of many researchers as it constitutes an undisturbed natural laboratory to study seismo-volcanic events and how they affect landscape modelling and evolution. One of the most remarkable geological and geomorphological features on Deception Island is the linearity of its easternmost coastal landform, the origin of which remains unknown. Some answers, based on presence of strike-slip fault or on the ice cap and beach geomorphological dynamics, have been reported in the literature. Our new work provides several indications of the existence of a dip-slip submarine fault, parallel to the coast (NNW-SSE), which suggests a tectonic origin for this morphological feature. Uplifted marine terraces, incision of a fluvial network over the ice cap, normal faulting parallel to the coast in the north and south rock heads bounding the beach and sharp shelf-break with rather constant slope, constitute some of this evidence. Terrace uplift and fluvial channel incision decreasing southward from Macaroni Point, indicates possible tilt movement across this inferred fault plane. C1 Univ Granada, Dpto Geodinam, F Ciencias, Granada 18002, Spain. Univ San Pablo, CEU, Fac Farm, Dpto CC Ambientales & Rec Nat, Madrid 28688, Spain. Univ Complutense Madrid, FCC Geol, Dpto Geodinam, E-28040 Madrid, Spain. Univ Politecn Madrid, ETS Ingn Minas, Dpto Matemat Aplicada & Metodos Informat, Madrid 28003, Spain. Univ Buenos Aires, Dpto Cs Geol, Fac Cs Ex & Nat, RA-1428 Buenos Aires, DF, Argentina. Univ Granada, Inst Andaluz Geofis, E-18071 Granada, Spain. RP Fernandez-Ibanez, F, Univ Granada, Dpto Geodinam, F Ciencias, Campus Fuentenueva S-N, Granada 18002, Spain. EM fferiba@ugr.es NR 33 TC 1 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH ST, NEW YORK, NY 10011-4211 USA SN 0954-1020 J9 ANTARCT SCI JI Antarct. Sci. PD SEP PY 2005 VL 17 IS 3 BP 418 EP 426 DI 10.1017/S0954102005002841 PG 9 SC Environmental Sciences; Geography, Physical; Geosciences, Multidisciplinary GA 970PE UT ISI:000232321300014 ER PT J AU Diaz-Garcia, JA Gutierrez-Jaimez, R TI Distribution of the generalised inverse of a random matrix and its applications SO JOURNAL OF STATISTICAL PLANNING AND INFERENCE LA English DT Article DE generalised inverse Wishart and Pseudo-wishart distributions; Jacobian; Hausdorff measure; Moore-Penrose inverse; matrix-variate T singular distribution; Bayesian inference; matrix-variate normal; singular distribution; multivariate linear model ID SINGULAR MULTIVARIATE BETA; WISHART AB Given a random singular matrix X, in the present article we find the Jacobian of the transformation Y = X+, where X+ is the Moore-Penrose inverse of X, both in the general case and when X is a non-negative definite matrix. Expressions for the densities of the Moore-Penrose inverse of the singular Wishart and Pseudo-Wishart matrices are obtained. Similarly, an expression for the density of the matrix-variate singular T-distribution is proposed. Finally, these results are applied to the Bayesian inference of the multivariate linear model. (c) 2004 Elsevier B.V. All fights reserved. C1 Univ Autonoma Agr Antonio Narro, Dept Stat & Computat, Saltillo, Coahuila, Mexico. Univ Granada, Dept Stat & OR, Granada 18071, Spain. RP Diaz-Garcia, JA, Univ Autonoma Agr Antonio Narro, Dept Stat & Computat, 25350 Buenavista, Saltillo, Coahuila, Mexico. EM jadiaz@uaaan.mx rgjaimez@goliat.ugr.es NR 18 TC 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3758 J9 J STATIST PLAN INFER JI J. Stat. Plan. Infer. PD JAN 1 PY 2006 VL 136 IS 1 BP 183 EP 192 PG 10 SC Statistics & Probability GA 976SN UT ISI:000232753700011 ER PT J AU Quesada-Perez, M Gonzalez-Tovar, E Martin-Molina, A Lozada-Cassou, M Hidalgo-Alvarez, R TI Ion size correlations and charge reversal in real colloids SO COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS LA English DT Article DE colloids; electric double layer; charge reversal; electrophoretic mobility ID ELECTRICAL DOUBLE-LAYER; ELECTROPHORETIC MOBILITY; MODEL COLLOIDS; ELECTROKINETIC PROPERTIES; STATISTICAL-MECHANICS; PRIMITIVE MODELS; ELECTROLYTES; INVERSION; APPROXIMATION; COUNTERIONS AB For many decades, the Gouy-Chapman model, whose cornerstone is the Poisson-Boltzmann equation, has been the traditional approach to describing the electric double layer (EDL). Since the early 1980s, a great amount of theoretical work (mostly computer simulations and integral equation theories) has proved that this classical picture of the EDL presents severe failures in the case of electrolytes with multivalent ions, as a result of neglecting ionsize correlations. The overlooking of the phenomenon of charge reversal is probably one of the most representative examples of such deficiencies. This work is a critical survey on the relevance of ion size correlations in real colloidal systems (focused mainly on solutions with multivalent counterions). A sophisticated electrophoresis theory (in which ionic steric correlations are taken into account) will be applied to analyze experimental data, which will be also compared with predictions of the classical approach. In addition, we will discuss to what extent ion size correlations contribute to charge reversal in colloids of biological nature and other real colloids. Unlike the classical Poisson-Boltzmann approach, the presented theory describes the charge inversion that occurs within aqueous latexes when increasing the trivalent aqueous electrolyte concentration well above the mmolar range. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Granada, Fac Ciencias, Dept Fis Aplicada, Grp Fis Fluidos & Biocoloides, E-18071 Granada, Spain. Inst Mexicano Petr, Eje Cent Lazaro Cardenas, Programa Ingn Mol, Mexico City 07730, DF, Mexico. Univ Paris 06, CNRS, Lab Phys Stat, Ecole Normale Super Associee, F-75231 Paris, France. Univ Paris 07, F-75231 Paris, France. Univ Autonoma San Luis Potosi, Inst Fis, San Luis Potosi 78000, Mexico. Univ Jaen, Dept Fis, Univ Politecn Linares, Jaen 23700, Spain. RP Hidalgo-Alvarez, R, Univ Granada, Fac Ciencias, Dept Fis Aplicada, Grp Fis Fluidos & Biocoloides, Campus Fuentenueva S-N, E-18071 Granada, Spain. EM rhidalgo@ugr.es NR 39 TC 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-7757 J9 COLLOID SURFACE A JI Colloid Surf. A-Physicochem. Eng. Asp. PD OCT 5 PY 2005 VL 267 IS 1-3 BP 24 EP 30 DI 10.1016/j.colsurfa.2005.06.034 PG 7 SC Chemistry, Physical GA 977GY UT ISI:000232792600006 ER PT J AU Do Campo, M Nieto, F TI Origin of mixed-layered (RI) muscovite-chlorite in an anchizonal slate from Puncoviscana Formation (Salta Province, Argentina) SO CLAY MINERALS LA English DT Article DE mixed-layering; anchizone; Central Andes; puncoviscana formation; Argentina ID ANALYTICAL ELECTRON-MICROSCOPY; X-RAY-DIFFRACTION; TEM; ILLITE; TRANSMISSION; SMECTITE; CRYSTALLINITY; METAMORPHISM; DEFORMATION; DIAGENESIS AB Mica-chlorite mixed-layering was identified by X-ray diffraction (XRD) as a major or subordinate constituent in several slates of the Puncoviscana Formation from Sierra de Mojotoro (Eastern Cordillera, NW Argentina). In order to determine the crystallochemical characteristics of these mixed-layered sequences and interpret their petrological meaning, anchizonal slate P90 was chosen for TEM observations. In this slate, dioctahedral mica and chlorite form interleaved phyllosilicate grains (IPG) or stacks, up to 110 mu m long, preferentially oriented with (001) planes at a high angle to the slaty cleavage but also oblique to S-0. In agreement with XRD results, the main phyllosilicates identified by transmission electron microscopy (TEM) were dioctahedral mica and random mixed-layer muscovite-chlorite, with chlorite in subordinate amounts and scarce smectite. In the lattice-fringe images of mixed-layer packets, a sequence of irregular stacking that produced apparent 24 angstrom (10 + 14) layers was observed, but it was frequently possible to distinguish the 10 angstrom layers from adjacent 14 angstrom layers. In nearly all packets, 14 angstrom layers prevail, exhibiting 14 angstrom:10 angstrom ratios between 1:1 and 3:1. Some elongated lenticular fissures which are probably a consequence of layer collapse caused by the TEM vacuum were identified in these packets. The straight, continuous appearance of lattice fringes plus the scarce evidence of collapsed layers identified suggest that these packets correspond principally to mixed-layer muscovite-chlorite, which is confirmed by analytical electron microscopy analyses. However, smectite-like layers are probably the third component of some of these mixed-layer sequences, which may account for their high Si and low (Fe + Mg) contents, their low interlayer charge in relation to theoretical interlayer muscovite-chlorite, and for the presence of Ca in the interlayer site. Textural relationships between chlorite and muscovite packets in IPG along with the observed transformations from 14 angstrom to 10 angstrom along the layer, is compatible with a prograde metamorphic replacement of chlorite in stacks by dioctahedral mica layers, probably in the presence of an aqueous fluid. C1 Univ Buenos Aires, Inst Geocronol & Geol Isotop, RA-1428 Buenos Aires, DF, Argentina. Univ Buenos Aires, Fac Ciencias Exactas & Nat, RA-1428 Buenos Aires, DF, Argentina. Univ Granada, CSIC, Dept Mineral & Petrol, Granada 18002, Spain. Univ Granada, CSIC, IACT, Granada 18002, Spain. RP Do Campo, M, Univ Buenos Aires, Inst Geocronol & Geol Isotop, Pabellon INGEIS,Ciudad Univ, RA-1428 Buenos Aires, DF, Argentina. EM docampo@ingeis.uba.ar NR 36 TC 1 PU MINERALOGICAL SOCIETY PI LONDON PA 41 QUEENS GATE, LONDON SW7 5HR, ENGLAND SN 0009-8558 J9 CLAY MINER JI Clay Min. PD SEP PY 2005 VL 40 IS 3 BP 317 EP 332 DI 10.1180/0009855054030176 PG 16 SC Mineralogy GA 984GV UT ISI:000233291800006 ER PT J AU Gervilla, F Proenza, JA Frei, R Gonzalez-Jimenez, JM Garrido, CJ Melgarejo, JC Meibom, A Diaz-Martinez, R Lavaut, W TI Distribution of platinum-group elements and Os isotopes in chromite ores from Mayari-Baracoa Ophiolitic Belt (eastern Cuba) SO CONTRIBUTIONS TO MINERALOGY AND PETROLOGY LA English DT Review ID HIGHLY SIDEROPHILE ELEMENTS; NORTHERN OMAN OPHIOLITE; MELT-ROCK INTERACTION; UPPER-MANTLE; PODIFORM CHROMITITES; GROUP MINERALS; LITHOSPHERIC MANTLE; ULTRAMAFIC COMPLEX; OCEANIC-CRUST; SILICATE MELT AB The Mayari-Baracoa ophiolitic belt in eastern Cuba hosts abundant chromite deposits of historical economic importance. Among these deposits, the chemistry of chromite ore is very variable, ranging from high Al (Cr#=0.43-0.55) to high Cr (Cr#=0.60-0.83) compositions. Platinum-group element (PGE) contents are also variable (from 33 ppb to 1.88 ppm) and correlate positively with the Cr# of the ore. Bulk PGE abundances correlate negatively with the Pd/Ir ratio showing that chromite concentrates mainly Os, Ir and Ru which gives rise to the characteristic negatively sloped, chrondrite-normalized PGE patterns in many chromitites. This is consistent with the mineralogy of PGEs, which is dominated by members of the laurite-erlichmanite solid solution series (RuS2-OsS2), with minor amounts of irarsite (IrAsS), Os-Ir alloys, Ru-Os-Ir-Fe-Ni alloys, Ni-Rh-As, and sulfides of Ir, Os, Rh, Cu, Ni, and/or Pd. Measured Os-187/Os-188 ratios (from 0.1304 to 0.1230) are among the lower values reported for podiform chromitites. The Os-187/Os-188 ratios decrease with increasing whole-rock PGE contents and Cr# of chromite. Furthermore, gamma Os values of all but one of the chromitite samples are negative indicating a subchondiritc mantle source. gamma Os decrease with increasing bulk Os content and decreasing Re-187/Os-188 ratios. These mineralogical and geochemical features are interpreted in terms of chromite crystallization from melts varying in composition from back-arc basalts (Al-rich chromite) to boninites (Cr-rich chromite) in a suprasubduction zone setting. Chromite crystallization occurs as a consequence of magma mixing and assimilation of preexisting gabbro sills at the mantle-crust transition zone. Cr#, PGE abundances, and bulk Os isotopic composition of chromitites are determined by the combined effects of mantle source heterogeneity, the degree of partial melting, the extent of melt-rock interactions, and the local sulfur fugacity. Small-scale (mu m to cm) chemical and isotopic heterogeneities in the platinum-group minerals are controlled by the mechanism(s) of chromite crystallization in a heterogeneous environment created by the turbulent regime generated by successive inputs of different batches of melt. C1 Univ Granada, CSIC, Dept Mineral & Petrol, Granada 18002, Spain. Univ Granada, CSIC, Fac Ciencias, Inst Andaluz Ciencias Tierra, Granada 18002, Spain. Univ Barcelona, Fac Geol, Dept Cristallog Mineral & Diposits Minerals, E-08028 Barcelona, Spain. Univ Copenhagen, Inst Geol, DK-1350 Copenhagen, Denmark. Univ Granada, Fac Ciencias, Dept Mineral & Petrol, Granada 18002, Spain. Stanford Univ, Stanford, CA 94305 USA. Inst Super Minero Met Moa, Dept Geol, Moa 83320, Holguin, Cuba. Empresa Geominera Oriente, Santiago De Cuba, Cuba. RP Gervilla, F, Univ Granada, CSIC, Dept Mineral & Petrol, Avda Fuentenueva S-N, Granada 18002, Spain. EM gervilla@ugr.es NR 103 TC 9 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0010-7999 J9 CONTRIB MINERAL PETROL JI Contrib. Mineral. Petrol. PD DEC PY 2005 VL 150 IS 6 BP 589 EP 607 DI 10.1007/s00410-005-0039-2 PG 19 SC Geochemistry & Geophysics; Mineralogy GA 990CF UT ISI:000233720100003 ER PT J AU Zulantay, I Arribada, A Honores, P Sanchez, G Solari, A Ortiz, S Osuna, A Rodriguez, J Apt, W TI No association between persistence of the parasite and electrocardiographic evolution in treated patients with Chagas disease SO REVISTA MEDICA DE CHILE LA Spanish DT Article DE Chagas cardiomyopathy; Chagas diseased; electro cardiography ID POLYMERASE-CHAIN-REACTION; TRYPANOSOMA-CRUZI; FOLLOW-UP; CHEMOTHERAPY; ITRACONAZOLE; BENZNIDAZOLE; ALLOPURINOL; MICE; XENODIAGNOSIS; REVERSIBILITY AB Background: At the present lime the assessment of results of treatment of Chagas disease is mainly parasitological. Anti Trypanosoma cruzi IgGs remain positive practically lifelong and electrocardiographic tracings are not usually used as criteria of improvement. Aim: To determine, in a long term follow up, if electrocardiographic evolution is associated with the persistence of the parasite in treated patients with chronic Chagas disease. Material and methods: Thirty patients with chronic Chagas disease that participated in a randomized trial of treatment with itraconazole or allopurinol, were studied. Seven years after treatment, patients were classified in group I if they had a positive xenodiagnosis test, polymerase chain reaction and hybridization in blood or in group II if they had negative tests. A 12 lead electrocardiogram (EKG) was performed each year to all patients. Results: Seventeen patients were classfied in group 1 and 13 in group II. At baseline 10 patients in group 1 and 8 in group II had a normal EKG. Six years after treatment 13 patients in group 1 and 10 in group II had a normal tracing. Of those with a normal tracing at baseline, only one patient in each group presented alterations after six years. A regression of abnormal tracings was observed in four and three patients of groups I and II respectively. Conclasicins: There is no association between the persistence of the parasite in treated patients with Chagas disease and the evolution of electrocardiographic tracings (Rev Med Chile 2005; 133: 1153-60). C1 Univ Chile, Fac Med, ICBM,Lab Parasitol Basico Clin, Programa Biol Celular & Mol, Santiago, Chile. Univ Chile, Fac Med, ICBM,Lab Biol Mol Parasitos, Programa Biol Celular & Mol, Santiago, Chile. Univ Granada, Fac Ciencias, Inst Biotecnol, E-18071 Granada, Spain. Univ Chile, Fac Med, Escuela Salud Publ, Santiago, Chile. RP Apt, W, Univ Chile, Fac Med, ICBM,Lab Parasitol Basico Clin, Programa Biol Celular & Mol, Santiago, Chile. EM wapt@med.uchile.cl NR 39 TC 0 PU SOC MEDICA SANTIAGO PI SANTIAGO 9 PA BERNARDA MORIN 488 PROVIDENCIA, CASILLA 168 CORREO 55, SANTIAGO 9, CHILE SN 0034-9887 J9 REV MED CHILE JI Rev. Medica Chile PD OCT PY 2005 VL 133 IS 10 BP 1153 EP 1160 PG 8 SC Medicine, General & Internal GA 990KJ UT ISI:000233741500004 ER PT J AU Apt, W Arribada, A Zulantay, I Solari, A Sanchez, G Mundaca, K Coronado, X Rodriguez, J Gil, LC Osuna, A TI Itraconazole or allopurinol in the treatment of chronic American trypanosomiasis: the results of clinical and parasitological examinations 11 years post-treatment SO ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY LA English DT Article ID CHRONIC CHAGAS-DISEASE; POLYMERASE-CHAIN-REACTION; FOLLOW-UP; IN-VITRO; CRUZI; CHEMOTHERAPY; BENZNIDAZOLE; CHILDREN; ANTIGENS; CURE AB Eleven years after they had been given itraconazole or allopurinol for the treatment of chronic American trypanosomiasis, 109 adult patients were checked for electrocardiographic abnormalities and evidence of Trypanosoma cruzi infection. The parasitological investigations included xenodiagnosis, in which the faeces of Triatoma infestans that had fed on the patients were checked under the microscope for flagellates. In addition, a PCR-based assay and a hybridization assay were used to test blood samples from the patients, and faeces from the Tri. infestans that had fed on the patients, for Try. cruzi DNA. For the data analysis, the patients were divided into four groups known as normal/normal, abnormal/normal, normal/abnormal and abnormal/abnormal, according to whether the patients had been found to have normal or abnormal electrocardiograms ( ECG) shortly before the first treatment and to have normal or abnormal ECG when checked at the 11-year follow-up. The 51 normal/normal and 24 normal/abnormal patients were assumed to have been in the `indeterminate' phase of the disease when they were treated, whereas the 16 abnormal/normal and 18 abnormal/abnormal patients all had evidence of chagasic cardiopathy at that time. When checked 11 years post-treatment, 40 (78.4%), 17 (70.8%), 14 (87.5%) and 17 (94.4%) of these patients, respectively, were each found positive for Try. cruzi in at least one of the parasitological tests. The hybridization assay, whether applied to human blood or bug faeces, appeared a significantly more sensitive test than the PCR-based assays or microscopically assessed xenodiagnosis (P < 0.05). Only the 21 patients who appeared to be negative for Try. cruzi could be considered parasitologically cured (although all still appeared to have anti-Try. cruzi antibodies in their blood). Only 13 of these parasitologically cured patients ( seven of those treated with itraconazole and six of those given allopurinol) had normal ECG at the 11-year follow-up. In Chile at least, itraconazole, which caused fewer adverse effects than the allopurinol while being no less effective at preventing cardiopathy, appears to be the drug of choice to treat chronic American trypanosomiasis in adults. C1 Univ Chile, Fac Med, Lab Parasitol Basico Clin, Programa Biol Celular & Mol,Inst Ciencias Biomed, Santiago 3, Chile. Univ Chile, Hosp San Borja Arriaran, Dept Med, Santiago 11, Chile. Clin INDISA, Serv Cardiol, Santiago 11, Chile. Univ Chile, Fac Med, Inst Ciencias Biomed, Santiago 7, Chile. Univ Chile, Fac Med, Escuela Salud Publ, Santiago 3, Chile. Univ Chile, Hosp Clin, Gastroenterol Serv, Santiago 7, Chile. Univ Granada, Dept Parasitol, Inst Biotecnol, Fac Ciencias, E-18071 Granada, Spain. RP Apt, W, Univ Chile, Fac Med, Lab Parasitol Basico Clin, Programa Biol Celular & Mol,Inst Ciencias Biomed, Independencia 1027,POB 427, Santiago 3, Chile. EM wapt@med.uchile.cl NR 32 TC 7 PU MANEY PUBLISHING PI LEEDS PA HUDSON RD, LEEDS LS9 7DL, ENGLAND SN 0003-4983 J9 ANN TROP MED PARASITOL JI Ann. Trop. Med. Parasitol. PD DEC PY 2005 VL 99 IS 8 BP 733 EP 741 DI 10.1179/136485905X75403 PG 9 SC Public, Environmental & Occupational Health; Parasitology; Tropical Medicine GA 991JF UT ISI:000233808700002 ER PT J AU Diaz-Garcia, JA Gutierrez-Jaimez, R TI Functions of singular random matrices with applications SO TEST LA English DT Article DE matrix-variate inverse beta and F distributions; Jacobian; Hausdorff measure; inverse singular distribution; inverse Wishart and pseudo-Wishart singular distributions; Bayesian inference ID MULTIVARIATE BETA-DISTRIBUTIONS; WISHART; INVERSE AB This article describes how the Jacobian is found for certain functions of a singular random matrix, both in the general case and in that of a non-negative definite random matrix. The Jacobian of the transformation V = S-2 is found when S is non-negative definite; in addition, the Jacobian of the transformation Y = X+ is determined when X+ is the generalized, or Moore-Penrose, inverse of X. Expressions for the densities of the generalized inverse of the central beta and F singular random matrices are proposed. Finally, two applications in the field of Bayesian inference are presented. C1 Univ Auton Agraria Antonio Narro, Dept Stat & Computat, Saltillo 25315, Coahuila, Mexico. Univ Granada, Dept Stat & Operat Res, Granada, Spain. RP Diaz-Garcia, JA, Univ Auton Agraria Antonio Narro, Dept Stat & Computat, Saltillo 25315, Coahuila, Mexico. EM jadiaz@uaaan.mx NR 26 TC 1 PU SOCIEDAD ESTADISTICA INVESTIGACION OPERATIVA PI MADRID PA HORTALEZA 104, 2 IZDA, 28004 MADRID, SPAIN SN 1133-0686 J9 TEST JI Test PD DEC PY 2005 VL 14 IS 2 BP 475 EP 487 PG 13 SC Statistics & Probability GA 993VK UT ISI:000233983300008 ER PT J AU Al-Dweri, FMO Rojas, EL Lallena, AM TI Effects of bone- and air-tissue inhomogeneities on the dose distributions of the Leksell Gamma Knife (R) calculated with PENELOPE SO PHYSICS IN MEDICINE AND BIOLOGY LA English DT Article ID STEREOTACTIC RADIOSURGERY; SIMPLIFIED MODEL; SOURCE CHANNEL; LEKSELL-GAMMA-KNIFE(R); BEAMS AB Monte Carlo simulation with PENELOPE (version 2003) is applied to calculate Leksell. Gamma Knife (R) dose distributions for heterogeneous phantoms. The usual spherical water phantom is modified with a spherical bone shell simulating the skull and an air-filled cube simulating the frontal or maxillary sinuses. Different simulations of the 201 source configuration of the Gamma Knife have been carried out with a simplified model of the geometry of the source channel of the Gamma Knife recently tested for both single source and multisource configurations. The dose distributions determined for heterogeneous phantoms including the bone- and/or air-tissue interfaces show non-negligible differences with respect to those calculated for a homogeneous one, mainly when the Gamma Knife isocentre approaches the separation surfaces. Our findings confirm an important underdosage (similar to 10%) nearby the air-tissue interface, in accordance with previous results obtained with the PENELOPE code with a procedure different from ours. On the other hand, the presence of the spherical shell simulating the skull produces a few per cent underdosage at the isocentre wherever it is situated. C1 Univ Granada, Dept Fis Moderna, E-18071 Granada, Spain. Appl Sci Private Univ, Dept Phys, Amman, Jordan. Inst Nacl Invest Nucl, Ocoyoacac 52045, Mexico. RP Al-Dweri, FMO, Univ Granada, Dept Fis Moderna, E-18071 Granada, Spain. EM faldweri@ugr.es elrc@nuclear.inin.mx lallena@ugr.es NR 14 TC 4 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0031-9155 J9 PHYS MED BIOL JI Phys. Med. Biol. PD DEC 7 PY 2005 VL 50 IS 23 BP 5665 EP 5678 DI 10.1088/0031-9155/50/23/018 PG 14 SC Engineering, Biomedical; Radiology, Nuclear Medicine & Medical Imaging GA 994UE UT ISI:000234055900019 ER PT J AU Ortiz, JJ Requena, I TI Azcatl-CRP: An ant colony-based system for searching full power control rod patterns in BWRs SO ANNALS OF NUCLEAR ENERGY LA English DT Article ID BOILING WATER-REACTORS; PROGRAM AB We show a new system named AZCATL-CRP to design full power control rod patterns in BWRs. Azcatl-CRP uses an ant colony system and a reactor core simulator for this purpose. Transition and equilibrium cycles of Laguna Verde Nuclear Power Plant (LVNPP) reactor core in Mexico were used to test Azcatl-CRP. LVNPP has 109 control rods grouped in four sequences and currently uses control cell core (CCC) strategy in its fuel reload design. With CCC method only one sequence is employed for reactivity control at full power operation. Several operation scenarios are considered, including core water flow variation throughout the cycle, target different axial power distributions and Haling conditions. Azcatl-CRP designs control rod patterns (CRP) taking into account safety aspects such as k(eff) core value and thermal limits. Axial power distributions are also adjusted to a predetermined power shape. (c) 2005 Elsevier Ltd. All rights reserved. C1 ININ, Dept Sist Nucl, Mexico City, DF, Mexico. Univ Granada, ETSII Informat, Dpt Ciencias Computac & IA, E-18071 Granada, Spain. RP Ortiz, JJ, ININ, Dept Sist Nucl, Carr Mexico Toluca Km 36-5,Salazar, Mexico City, DF, Mexico. EM jjortiz@nuclear.inin.mx requena@decsai.ugr.es NR 14 TC 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0306-4549 J9 ANN NUCL ENERG JI Ann. Nucl. Energy PD JAN PY 2006 VL 33 IS 1 BP 30 EP 36 DI 10.1016/j.anucene.2005.08.003 PG 7 SC Nuclear Science & Technology GA 997PO UT ISI:000234259100004 ER PT J AU Alvarez-Nodarse, R Atakishiyeva, MK Atakishiyev, NM TI On a q-extension of the linear harmonic oscillator with the continuous orthogonality property on R SO CZECHOSLOVAK JOURNAL OF PHYSICS LA English DT Article DE linear harmonic oscillator; quantum mechanics; q-extension; continuous orthogonality; discrete q-Hermite polynomials ID HERMITE-POLYNOMIALS; REALIZATION; ALGEBRA AB We discuss a q-analogue of the linear harmonic oscillator in quantum mechanics based on a q-extension of the classical Hermite polynomials H,(x) recently introduced by us in R. Alvarez-Nodarse et al.: Boletin de la Sociedad Matematica Mexicana (3) 8 (2002) 127. The wave functions in this q-model of the quantum harmonic oscillator possess the continuous orthogonality property on the whole real line R with respect to a positive weight function. A detailed description of the corresponding q-system is carried out. C1 Univ Sevilla, Dept Analisis Matemat, E-41080 Seville, Spain. Univ Granada, Inst Carlos I Fis Teor & Computac, E-18071 Granada, Spain. UAEM, Fac Ciencias, Cuernavaca 62250, Morelos, Mexico. UNAM, Inst Matemat, Cuernavaca 62210, Morelos, Mexico. RP Alvarez-Nodarse, R, Univ Sevilla, Dept Analisis Matemat, Apdo 1160, E-41080 Seville, Spain. EM ran@us.es mesuma@servm.fc.uaem.mx natig@matcuer.unam.mx NR 15 TC 2 PU INST PHYSICS ACAD SCI CZECH REPUBLIC PI PRAGUE PA NA SLOVANCE 2, PRAGUE 182 21, CZECH REPUBLIC SN 0011-4626 J9 CZECH J PHYS JI Czech. J. Phys. PD NOV PY 2005 VL 55 IS 11 BP 1315 EP 1320 PG 6 SC Physics, Multidisciplinary GA 999PI UT ISI:000234401500003 ER PT J AU Hobbs, RJ Arico, S Aronson, J Baron, JS Bridgewater, P Cramer, VA Epstein, PR Ewel, JJ Klink, CA Lugo, AE Norton, D Ojima, D Richardson, DM Sanderson, EW Valladares, F Vila, M Zamora, R Zobel, M TI Novel ecosystems: theoretical and management aspects of the new ecological world order SO GLOBAL ECOLOGY AND BIOGEOGRAPHY DT Article DE biological invasions; degradation; ecosystem transformation; land abandonment; novel ecosystem ID PUERTO-RICO; BIOTIC HOMOGENIZATION; RESTORATION ECOLOGY; TUSSOCK GRASSLANDS; EARTHS ECOSYSTEMS; COLORADO RIVER; SEA OTTERS; PLANT; BIODIVERSITY; COMMUNITIES AB We explore the issues relevant to those types of ecosystems containing new combinations of species that arise through human action, environmental change, and the impacts of the deliberate and inadvertent introduction of species from other regions. Novel ecosystems (also termed 'emerging ecosystems') result when species occur in combinations and relative abundances that have not occurred previously within a given biome. Key characteristics are novelty, in the form of new species combinations and the potential for changes in ecosystem functioning, and human agency, in that these ecosystems are the result of deliberate or inadvertent human action. As more of the Earth becomes transformed by human actions, novel ecosystems increase in importance, but are relatively little studied. Either the degradation or invasion of native or 'wild' ecosystems or the abandonment of intensively managed systems can result in the formation of these novel systems. Important considerations are whether these new systems are persistent and what values they may have. It is likely that it may be very difficult or costly to return such systems to their previous state, and hence consideration needs to be given to developing appropriate management goals and approaches. C1 Murdoch Univ, Sch Environm Sci, Murdoch, WA 6150, Australia. UNESCO, Div Ecol Sci & Man, F-75732 Paris 15, France. UNESCO, Biosphere Programme, F-75732 Paris 15, France. CNRS, CEFE, F-34293 Montpellier, France. Colorado State Univ, Nat Resoures Ecol Lab, Ft Collins, CO 80523 USA. Ramsar Convent Wetlands, CH-1196 Gland, Switzerland. Harvard Univ, Sch Med, Ctr Hlth & Global Environm, Boston, MA 02115 USA. US Forest Serv, USDA, Inst Pacific Isl Forestry, Honolulu, HI 96813 USA. Univ Brazilia, Dept Ecol, BR-70919970 Asa Norte Brazilia, DF, Brazil. US Forest Serv, USDA, Int Inst Trop Forestry, Rio Piedras, PR 00926 USA. Univ Canterbury, Sch Forestry, Christchurch 1, New Zealand. Univ Stellenbosch, Dept Bot & Zool, Ctr Invas Biol, ZA-7602 Matieland, South Africa. Wildlife Conservat Soc, Bronx, NY 10460 USA. CSIC, Ctr Ciencias Medioambientales, E-28006 Madrid, Spain. Univ Autonoma Barcelona, Ctr Ecol Res & Forestry Applicat, E-08193 Barcelona, Spain. Univ Granada, Dept Biol Anim & Ecol, E-18071 Granada, Spain. Univ Tartu, Inst Bot & Ecol, EE-51005 Tartu, Estonia. RP Hobbs, RJ, Murdoch Univ, Sch Environm Sci, Murdoch, WA 6150, Australia. NR 51 TC 36 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 1466-822X J9 GLOBAL ECOL BIOGEOGR JI Glob. Ecol. Biogeogr. PD JAN PY 2006 VL 15 IS 1 BP 1 EP 7 DI 10.1111/j.1466-822x.2006.00212.x PG 7 SC Ecology; Geography, Physical GA 999TB UT ISI:000234412300001 ER PT J AU Rodriguez-Gonzalez, I Marin, C Vargas, F Cordova, O Barrera, M Gutierrez-Sanchez, R Alunda, JM Sanchez-Moreno, M TI Identification and biochemical characterization of Leishmania strains isolated in Peru, Mexico, and Spain SO EXPERIMENTAL PARASITOLOGY LA English DT Article DE Leishmania species; in vitro culture; lectin agglutination ID IN-VITRO CULTURE; CUTANEOUS LEISHMANIASIS; TRYPANOSOMA-CRUZI; DIAGNOSIS; DONOVANI; BINDING; BRAZIL AB Eight Leishmania promastigotes were isolated from different geographical areas: three (LP1, LP2, and LP3) from the provincial department La Libertad and the fourth (LP4) from the department of Cajamarca (northern Peru); another three (LM1, LM2, and LM3) in the province of Campeche (Mexico); and the last (LS1) from a clinical case of a dog in Madrid (Spain). The isolates were characterized by carbohydrate cell-surface residues using agglutinations with four purified lectins, by isoenzyme analysis using different isoenzymes, by analysis of kinetoplast DNA (kDNA) restriction fragment length polymorphism using four different restriction endonucleases and by the final metabolite patterns after in vitro culture. These isolates were compared with four reference strains and typified as: Leishmania (Leishmania) donovani, two strains of L. (L.) infantum, and one species of L. (Viania)peruviana. According to our results and the statistical study, the Peruvian isolates represent three different strains: one would be L. (V.) peruviana, another the strain isolated in Cajamarca (LP4) and the third would include the three strains from the department of La Libertad (LP1, LP2, and LP3), these latter three isolates being phylogenetically closer to the reference strain L. (L.) donovani. Meanwhile, the three isolates from Mexico form a group with close phylogenetic relationships to each other. The isolate from Spain belongs to the species L. (L.) infantum. Thus, a close correlation was drawn between the identity of each strain and its geographical origin. (c) 2005 Elsevier Inc. All rights reserved. C1 Univ Granada, Fac Ciencias, Dept Parasitol, Inst Biotecnol, E-18071 Granada, Spain. Univ Nacl Trujillo, Dept Microbiol & Parasitol, Trujillo 315, Peru. Univ Autonoma Yucatan, Ctr Invest Reg, Parasitol Lab, Merida, Mexico. Univ Granada, Fac Ciencias, Dept Estadist & IO, E-18071 Granada, Spain. Escuela Vet, Dept Salud Anim, Madrid 18040, Spain. RP Sanchez-Moreno, M, Univ Granada, Fac Ciencias, Dept Parasitol, Inst Biotecnol, C-Severo Ochoa S-N, E-18071 Granada, Spain. EM msanchem@ugr.es NR 21 TC 2 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0014-4894 J9 EXP PARASITOL JI Exp. Parasitol. PD JAN PY 2006 VL 112 IS 1 BP 44 EP 51 DI 10.1016/j.exppara.2005.09.002 PG 8 SC Parasitology GA 000KS UT ISI:000234461200007 ER PT J AU Monticelli, F Toledano, M Tay, FR Sadek, FT Goracci, C Ferrari, M TI A simple etching technique for improving the retention of fiber posts to resin composites SO JOURNAL OF ENDODONTICS DT Article DE fiber post; flowable composite; hydrogen peroxide etching; interfacial strength; silane ID MICROTENSILE BOND STRENGTH; GLASS-FIBER; FLOWABLE COMPOSITES; TREATED TEETH; DENTIN AB Coupling of fiber posts to composites is hampered by absence of chemical union between epoxy resit methacrylate-based resins. This study examined a clinically feasible protocol for creating micromechanical retention on the surface of fiber posts, using hydrogen peroxide etching to remove the surface layer of epoxy resin. This was followed by silanization of the exposed quartz fibers to enhance their chemical bonding to composites. Etching with 24% H2O2 for 10 min or 10% H2O2 for 20 min produced a 50 mu m thick surface zone that is depleted of epoxy resin, leaving intact, undamaged quartz fibers for silanization. Low viscosity flowable composites were employed to infiltrate this zone, to simulate the creation of hybrid layers in acid-etched dentin by dentin adhesives. Interfacial strengths were enhanced with the adjunctive use of H2O2 etching and silanization, and were probably dependent on the ability of the flowable composites to completely infiltrate this interdiffusion zone. C1 Univ Siena, Dept Restorat Dent & Dent Mat, Policlin Scotte, I-53100 Siena, Italy. Univ Granada, Dept Dent Mat, Granada, Spain. Univ Hong Kong, Fac Dent, Hong Kong, Hong Kong, Peoples R China. Univ Sao Paulo, Dept Dent Mat, Sao Paulo, Brazil. RP Monticelli, F, Univ Siena, Dept Restorat Dent & Dent Mat, Policlin Scotte, Viale Bracci, I-53100 Siena, Italy. EM monticelli@unisi.it NR 35 TC 21 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0099-2399 J9 J ENDODONT JI J. Endod. PD JAN PY 2006 VL 32 IS 1 BP 44 EP 47 DI 10.1016/j.joen.2005.10.005 PG 4 SC Dentistry, Oral Surgery & Medicine GA 003KB UT ISI:000234679500009 ER PT J AU Berenger, B Sanchez, LM Quilez, A Lopez-Barreiro, M de Haro, O Galvez, J Martin, MJ TI Protective and antioxidant effects of Rhizophora mangle L. against NSAID-induced gastric ulcers SO JOURNAL OF ETHNOPHARMACOLOGY LA English DT Article DE Rhizophora mangle; NSAID-induced gastric ulcer; antioxidant mechanisms; tannins ID MUCOSAL INJURY; LIPID-PEROXIDATION; RATS; TANNINS; BARK; EXTRACT; ENZYMES; OXYGEN; INDOMETHACIN; PATHOGENESIS AB The bark of Rhizophora mangle, the red mangrove, has been used traditionally in folk medicine of Caribbean countries due to its antiseptic, astringent, haemostatic and antifungal properties. Aqueous extracts are rich in tannins and have been proven experimentally to possess antibacterial, wound healing and antiulcerogenic effects. This work was designed to determine the gastroprotective effect of Rhizophora mangle in a model of diclofenac-induced ulcers in rats and to study the mechanisms involved, using the proton pump inhibitor omeprazole as a comparison. The lyophilized extract was given by oral gavage (125 and 62.5 mg/kg) three times at 12 h intervals before administering diclofenac 100 mg/kg. Pretreatment with the extract resulted in a significant decrease of the ulcerated area (P < 0.01). Rhizophora mangle induced a recovery of PGE(2) levels, which had been depleted by diclofenac. No anti-inflammatory effect was observed ex vivo or in vitro. The highest dose of the extract provoked a marked increase in glutathione peroxidase and superoxide dismutase activity, which was comparable to omeprazole. Furthermore, lipid peroxidation levels were inhibited in a dose-dependent manner. These results suggest that the gastroprotective effect of Rhizophora mangle in this experimental model appears through an antioxidant and prostaglandin-dependent way. (c) 2005 Elsevier Ireland Ltd. All rights reserved. C1 Fac Pharm, Dept Pharmacol, Seville 41012, Spain. Natl Ctr Plant & Anim Hlth, CENSA, Havana, Cuba. Univ Granada, Fac Pharm, Dept Pharmacol, E-18071 Granada, Spain. RP Martin, MJ, Fac Pharm, Dept Pharmacol, Profesor Garcia Gonzalez St 2, Seville 41012, Spain. EM calero@us.es NR 35 TC 3 PU ELSEVIER IRELAND LTD PI CLARE PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000, IRELAND SN 0378-8741 J9 J ETHNOPHARMACOL JI J. Ethnopharmacol. PD JAN 16 PY 2006 VL 103 IS 2 BP 194 EP 200 DI 10.1016/j.jep.2005.08.029 PG 7 SC Plant Sciences; Chemistry, Medicinal; Integrative & Complementary Medicine; Pharmacology & Pharmacy GA 005QY UT ISI:000234840100008 ER PT J AU Tejera, N Ortega, E Rodes, R Lluch, C TI Nitrogen compounds in the apoplastic sap of sugarcane stem: Some implications in the association with endophytes SO JOURNAL OF PLANT PHYSIOLOGY LA English DT Article DE amino acids; apoplast; endophyte; nitrogen compounds; sugarcane ID ACETOBACTER-DIAZOTROPHICUS; GLUCONACETOBACTER-DIAZOTROPHICUS; SUCROSE ACCUMULATION; BACTERIAL ENDOPHYTES; N-FERTILIZATION; XYLEM SAP; PLANTS; COLONIZATION; CARBON; CANE AB Several nitrogen compounds were identified and quantified in the apoplastic and symplastic sap of sugarcane stems. The sap of stems was composed mainly of soluble sugars, which constituted 95% of the total. organic compounds detected. Sap also contained nitrogen compounds, with amino acids (50-70% of N) and proteins (20-30% of N), being the main nitrogenous substances, as welt as inorganic forms as ammonium, nitrite and nitrate, in low concentrations (<20% of N). Serine, proline, atanine and aspartic acid together represented around 60% of the amino acids of the sap of both field grown and high nitrogen fertilized plants, and non-nitrogen fertilized plants inoculated with Gluconacetobacter diazotrophicus. The total amino acid content of apoplastic sap was six to nine times lower in non-nitrogen fertilized plants than in fertilized ones. The possible roles of these substances to regulate endophytic associations with sugarcane are also discussed. (C) 2005 Elsevier GmbH. All rights reserved. C1 Univ Granada, Fac Ciencias, Dept Fisiol Vegetal, E-18071 Granada, Spain. Univ La Habana, Fac Biol, Dept Biol Vegetal, Havana, Cuba. RP Tejera, N, Univ Granada, Fac Ciencias, Dept Fisiol Vegetal, Campus Fuentenueva S-N, E-18071 Granada, Spain. EM natejera@ugr.es NR 32 TC 5 PU ELSEVIER GMBH, URBAN & FISCHER VERLAG PI JENA PA OFFICE JENA, P O BOX 100537, 07705 JENA, GERMANY SN 0176-1617 J9 J PLANT PHYSIOL JI J. Plant Physiol. PD JAN PY 2006 VL 163 IS 1 BP 80 EP 85 DI 10.1016/j.jplph.2005.03.010 PG 6 SC Plant Sciences GA 006PE UT ISI:000234908600009 ER PT J AU Mardia, KV Angulo, JM Goitia, A TI Synthesis of image deformation strategies SO IMAGE AND VISION COMPUTING LA English DT Article DE deformation; entropy; image warping; information theory; Kullback-Leibler divergence; landmarks; registration; regularization; texture models AB Warping is one of the key areas of image analysis but there has been no understanding of the effects of different non-linear deformations in literature. This paper addresses the problem of the distortion effect produced by different types of non-linear deformation strategies on textured images. The images are modelled by a Gaussian random field. We first give various examples to illustrate that the model generates realistic images. We consider two types of deformations-a deterministic deformation and a landmark based deformation. The latter includes various radial basis type deformations including the thin-plate splines based deformation. The effects of deformations are assessed through Kullback-Leibler divergence measure. The measure is estimated by statistical sampling techniques. It is found empirically that this divergence measure is approximately distributed as a lognormal distribution under various different deformations. Thus a coefficient of variation based on log-divergence provides a natural criterion to compare different types of deformations. It is found that the thin-plate splines deformation is almost optimal over the wider class of the radial type deformations. (C) 2005 Elsevier B.V. All rights reserved. C1 Univ Granada, Dept Estadist & IO, E-18071 Granada, Spain. Univ Leeds, Dept Stat, Leeds LS2 9JT, W Yorkshire, England. Univ Los Andes, Inst Estadist, Merida 5101, Venezuela. RP Angulo, JM, Univ Granada, Dept Estadist & IO, E-18071 Granada, Spain. EM jmangulo@ugr.es NR 23 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0262-8856 J9 IMAGE VISION COMPUT JI Image Vis. Comput. PD JAN 1 PY 2006 VL 24 IS 1 BP 1 EP 12 DI 10.1016/j.imavis.2005.09.001 PG 12 SC Computer Science, Artificial Intelligence; Computer Science, Software Engineering; Computer Science, Theory & Methods; Engineering, Electrical & Electronic; Optics GA 007GQ UT ISI:000234957200001 ER PT J AU Gonzalez-Moles, MA Mosqueda-Taylor, A Delgado-Rodriguez, M Martinez-Mata, G Gil-Montoya, JA Diaz-Franco, MA Bravo-Perez, JJ M-Gonzalez, N TI Analysis of p53 protein by PAb240, Ki-67 expression and human papillomavirus DNA detection in different types of odontogenic keratocyst SO ANTICANCER RESEARCH LA English DT Article DE p53; Ki-67; human papillomavirus; odontogenic keratocyst ID SQUAMOUS-CELL CARCINOMA; JAW CYSTS; MUTATIONS; IMMUNOHISTOCHEMISTRY; PROLIFERATION; FEATURES; ANTIGEN; LESIONS; GROWTH AB Objective: To investigate the possible association between alterations in the p53 system and human papillomavirus (HPV) infection in the etiology Of odontogenic keratocysts (OKCs) and to study proliferation and epithelial maturation patterns by topographic analysis of Ki-67 expression. Materials and Methods: Eighty-three OKC samples (29 cases associated with nevoid basal cell carcinoma syndrome, 29 solitary non-recurrent cases 20 solitary recurrent cases, and 5 chondroid keratocysts) were studied by immunohistochemistry to detect p53 protein (PAb 244) and Ki-67 (MIB-1) expression, and by PCR to detect HPV DNA. Results: Twelve cases (14.6%) expressed p53 protein; no case showed the presence of HPV DNA; 9 cases (11%) presented with mild epithelial dysplasia. The suprabasal expression of Ki-67 was significantly more frequent than its basal expression (p < 0. 001). p53 protein expression was significantly associated with the presence of epithelial dysplasia (p=0.023). Ki-67 expression was not associated with OKC type, the presence of dysplasia, or p53 expression. Conclusion: HPVs do not participate in the etiology of OKC, and it appears unlikely that a p53 gene mutation mechanism plays a major role in the genesis of OKC. OKCs show proliferation and genuine maturation behavior reminiscent of benign neoplasms with local destructive capacity. C1 Univ Granada, Dept Stomatol, E-18071 Granada, Spain. Univ Autonoma Metropolitana Xochimilco, Dept Hlth Care, Mexico City, DF, Mexico. Univ Jena, Div Prevent Med & Publ Hlth, D-6900 Jena, Germany. RP Gonzalez-Moles, MA, Univ Granada, Dept Stomatol, Paseo Cartuja S-N, E-18071 Granada, Spain. EM magonzal@ugr.es NR 34 TC 2 PU INT INST ANTICANCER RESEARCH PI ATHENS PA EDITORIAL OFFICE 1ST KM KAPANDRITIOU-KALAMOU RD KAPANDRITI, PO BOX 22, ATHENS 19014, GREECE SN 0250-7005 J9 ANTICANCER RES JI Anticancer Res. PD JAN-FEB PY 2006 VL 26 IS 1A BP 175 EP 181 PG 7 SC Oncology GA 009HZ UT ISI:000235103800024 ER PT J AU Cozman, FG Walley, P TI Graphoid properties of epistemic irrelevance and independence SO ANNALS OF MATHEMATICS AND ARTIFICIAL INTELLIGENCE DT Article DE conditional independence; credal set; epistemic independence; graphoid axioms; imprecise probability; lower prevision ID CONDITIONAL-INDEPENDENCE; NETWORKS; PROBABILITIES AB This paper investigates Walley's concepts of epistemic irrelevance and epistemic independence for imprecise probability models. We study the mathematical properties of irrelevance and independence, and their relation to the graphoid axioms. Examples are given to show that epistemic irrelevance can violate the symmetry, contraction and intersection axioms, that epistemic independence can violate contraction and intersection, and that this accords with informal notions of irrelevance and independence. C1 Univ Granada, Dept Ciencias Computac & Inteligencia Artificial, Granada, Spain. RP Cozman, FG, Cidade Univ,Av Prof Mello Moraes 2231, Sao Paulo, Brazil. EM fgcozman@usp.br NR 36 TC 2 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1012-2443 J9 ANN MATH ARTIF INTELL JI Ann. Math. Artif. Intell. PD OCT PY 2005 VL 45 IS 1-2 BP 173 EP 195 DI 10.1007/s10472-005-9004-z PG 23 SC Computer Science, Artificial Intelligence; Mathematics, Applied GA 011KR UT ISI:000235267600005 ER PT J AU Delgado, M Duarte, O Requena, I TI An arithmetic approach for the computing with words paradigm SO INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS LA English DT Article ID FUZZY NUMBERS AB Computing with words applications are mostly built using rule-based systems, which have some important deficits: First, it is not easy to deal with high dimension problems because the size of the rule base increases exponentially; second, it is not possible to concatenate two or more systems without losing information; and third, there are no ways to compute inputs from outputs. In this article we show an alternative kind of system that remedies those deficits in many applications. It is based on fuzzy arithmetic rather than fuzzy logic. We also show application examples. (c) 2006 Wiley Periodicals, Inc. C1 Univ Granada, Dept Comp Sci & Artificial Intelligence, Granada 18071, Spain. Natl Univ Colombia, Dept Elect & Elect Engn, Bogota, Colombia. RP Delgado, M, Univ Granada, Dept Comp Sci & Artificial Intelligence, C Daniel Saucedo Aranda S-N, Granada 18071, Spain. EM mdelgado@ugr.es ogduartev@unal.edu.co requena@decsai.ugr.es NR 13 TC 2 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0884-8173 J9 INT J INTELL SYST JI Int. J. Intell. Syst. PD FEB PY 2006 VL 21 IS 2 BP 121 EP 142 DI 10.1002/int.20123 PG 22 SC Computer Science, Artificial Intelligence GA 011VL UT ISI:000235296500001 ER PT J AU King, M Weich, S Torres-Gonalez, F Svab, I Maaroos, HI Neeleman, J Xavier, M Morris, R Walker, C Bellon-Saameno, JA Moreno-Kustner, B Rotar, D Rifel, J Aluoja, A Kalda, R Geerlings, MI Carraca, I de Almeida, MC Vicente, B Saldivia, S Rioseco, P Nazareth, I TI Prediction of depression in European general practice attendees: the PREDICT study SO BMC PUBLIC HEALTH LA English DT Article ID COMMON MENTAL-DISORDERS; MINOR PSYCHIATRIC MORBIDITY; PRIMARY-CARE; RISK-FACTORS; DIFFERENT CULTURES; POPULATION; HEALTH; COMMUNITY; INTERVIEW; QUESTIONNAIRE AB Background: Prevention of depression must address multiple risk factors. Estimating overall risk across a range of putative risk factors is fundamental to prevention of depression. However, we lack reliable and valid methods of risk estimation. This protocol paper introduces PREDICT, an international research study to address this risk estimation. Methods/design: This is a prospective study in which consecutive general practice attendees in six European countries are recruited and followed up after six and 12 months. Prevalence of depression is assessed at baseline and each follow-up point. Consecutive attendees between April 2003 and September 2004 who were aged 18 to 75 were asked to take part. The possibility of a depressive episode was assessed using the Depression Section of the Composite International Diagnostic Interview. A selection of presumed risk factors was based on our previous work and a systematic review of the literature. It was necessary to evaluate the test-retest reliability of a number of risk factor questions that were developed specifically, or adapted, for the PREDICT study. In a separate reliability study conducted between January and November 2003, consecutive general practice attendees in the six participating European countries completed the risk factor items on two occasions, two weeks apart. The overall response rate at entry to the study was 69%. We exceeded our expected recruitment rate, achieving a total of 10,048 people in all. Reliability coefficients were generally good to excellent. Discussion: Response rate to follow-up in all countries was uniformly high, which suggests that prediction will be based on almost a full cohort. The results of our reliability analysis are encouraging and suggest that data collected during the course of PREDICT will have a satisfactory level of stability. The development of a multi-factor risk score for depression will lay the foundation for future research on risk reduction in primary care. Our data will also provide the necessary evidence base on which to develop and evaluate interventions to reduce the prevalence of depression. C1 UCL, Dept Mental Hlth Sci, London, England. Univ Warwick, Div Hlth Community, Coventry CV4 7AL, W Midlands, England. Univ Granada, Dept Psychiat, Granada, Spain. Univ Ljubljana, Dept Family Med, Ljubljana, Slovenia. Univ Tartu, Fac Med, Tartu 5, Estonia. Univ Med Ctr, Utrecht, Netherlands. Univ Lisbon, Fac Ciencias Med, P-1699 Lisbon, Portugal. UCL, Dept Primary Care & Populat Sci, London, England. Dept Family & Community Med, Malaga, Spain. Mora Hlth Ctr, Mora, Portugal. Encarnacai Hlth Ctr, Lisbon, Portugal. Concepcion Univ, Dept Psiquiatria & Salud Mental, Concepcion, Chile. UCL, Dept Primary Care & Populat Sci, London, England. UCL, MRC Gen Practice Res Framework, London, England. RP King, M, UCL, Dept Mental Hlth Sci, London, England. EM m.king@medsch.ucl.ac.uk S.Weich@warwick.ac.uk ftorres@urg.es igor.svab@mf.uni-lj.si Heidi-Ingrid.Maaroos@ut.ee J.Neeleman@umcutrecht.nl xavierm@sapo.pt r.morris@pcps.ucl.ac.uk c.walker@medsch.ucl.ac.uk jabellon@terra.es bertamk@ugr.es Danica.rotar@guest.arnes.si janez.rifel@MF.UNI-LJ.SI Anu.Aluoja@kliinikum.ee Ruth.Kalda@ut.ee M.Geerlings@umcutrecht.nl xavierm@sapo.pt jcaldasalmeida@aol.com bvicent@udec.cl ssaldivi@udec.cl bvicent@udec.cl nazareth@pcpl.ucl.ac.uk NR 46 TC 5 PU BIOMED CENTRAL LTD PI LONDON PA MIDDLESEX HOUSE, 34-42 CLEVELAND ST, LONDON W1T 4LB, ENGLAND SN 1471-2458 J9 BMC PUBLIC HEALTH JI BMC Public Health PD JAN 12 PY 2006 VL 6 AR 6 DI 10.1186/1471-2458-6-6 PG 8 SC Public, Environmental & Occupational Health GA 012KU UT ISI:000235338900001 ER PT J AU Abad, I Nieto, F Gutierrez-Alonso, G Do Campo, M Lopez-Munguira, A Velilla, N TI Illitic substitution in micas of very low-grade metamorphic clastic rocks SO EUROPEAN JOURNAL OF MINERALOGY LA English DT Article DE illitic component; SEM/EDX; TEM/AEM; mica; low-grade metamorphism; diagenesis ID TRANSMISSION ELECTRON-MICROSCOPY; LAYER SILICATE MINERALS; SOUTH PORTUGUESE ZONE; SEA GEOTHERMAL-FIELD; EQUILIBRATION EXPERIMENTS; SEDIMENTARY-ROCKS; ENDMEMBER ILLITE; PHYLLOSILICATES; EVOLUTION; MUSCOVITE AB The chemical compositions of micas from six well-characterised sequences have been jointly evaluated I in order to analyse the behaviour of illitic substitution (SiAl-1 square K-1) in relation to diagenetic/metamorphic grade. Data from similar to 265 crystals, corresponding to 48 samples, were obtained through EDX analyses in SEM and TEM and the influence of analytical artefacts, such as contamination and alkali loss, was critically evaluated. From diagenesis to low epizone, the compositions of the micas are highly heterogeneous at the sample level, do not show systematic differences between grades, and include a significant illitic component, ranging from Sigma interlayer cations = 0.6 to 1.0 a.f.u. At high epizone (Kubler Index < 0.2 Delta degrees 2 theta), a very significant textural change is accompanied by homogenisation of the chemical composition and a reduction of the illitic component to very low values. Our data suggest continuity in the composition between illite and muscovite and do not allow us to confirm the existence of a miscibility gap in low-T environment natural samples. Some of the mica analyses reaching Si contents of around 3.5 a.f.u. correspond to interlayer-cation population contents in the range of 0.6-0.7 a.f.u., indicating illitic substitution. Therefore, thermobarometry of low-temperature phengites based only on the Si-content, without taking into account the illitic component, would result in pressure overestimates. C1 Univ Jaen, Dept Geol, Jaen 23071, Spain. Univ Granada, CSIC, Dept Mineral & Petrol, Granada 18002, Spain. Univ Granada, CSIC, IACT, Granada 18002, Spain. Univ Salamanca, Dept Geol, E-37008 Salamanca, Spain. Inst Geocronol & Geol Isotop, RA-1428 Buenos Aires, DF, Argentina. Univ Extremadura, Area Cristalog & Mineral, E-06071 Badajoz, Spain. RP Abad, I, Univ Jaen, Dept Geol, Jaen 23071, Spain. EM miabad@ujaen.es NR 49 TC 2 PU E SCHWEIZERBARTSCHE VERLAGS PI STUTTGART PA NAEGELE U OBERMILLER, SCIENCE PUBLISHERS, JOHANNESSTRASSE 3A, D 70176 STUTTGART, GERMANY SN 0935-1221 J9 EUROPEAN J MINERAL JI Eur. J. Mineral. PD JAN-FEB PY 2006 VL 18 IS 1 BP 59 EP 69 DI 10.1127/0935-1221/2006/0018-0059 PG 11 SC Mineralogy GA 019ZL UT ISI:000235877400005 ER PT J AU Amariles, P Gonzalez, LI Giraldo, NA TI Prevalence of self-treatment with complementary products and therapies for weight loss: A randomized, cross-sectional study in overweight and obese patients in Colombia SO CURRENT THERAPEUTIC RESEARCH-CLINICAL AND EXPERIMENTAL LA English DT Article DE weight loss; herbal treatments; obesity; complementary medicine ID ALTERNATIVE MEDICINE; DIETARY-SUPPLEMENTS; NATIONAL-SURVEY; UNITED-STATES; BODY-WEIGHT; FAT LOSS; ADULTS; PERCEPTIONS; REDUCTION; SURVEY/ AB Background: The use of complementary and alternative medicine for weight loss is becoming increasingly common worldwide. In overweight or obese patients, this practice could be harmful. Available data concerning the use of complementary therapies and products (CTPs) for weight loss in these patients in Colombia are limited. Objectives: The aims of this study were to determine the prevalence of self-treatment with CTPs in overweight or obese patients in Colombia and to explore the relationship between CTP use and demographic, anthropometric, and biochemical parameters. Methods: This randomized, cross-sectional study was conducted at a registered dieticians' office located at the Center for Nutritional Care, School of Nutrition and Dietetics, University of Antioquia, Medellin, Colombia, and at an outpatient clinic attended by a registered dietician located at the Pablo Tobon Uribe Hospital, Medellin, Colombia. The study enrolled a random sample of overweight (body mass index [BMI], 25-30 kg/m(2)) or obese (BMI, > 30 kg/m(2)) male and female patients aged 20 to 50 years received nutritional treatment in Colombia in 2002. Data concerning the use of weight-loss CTPs were gathered, and their possible association with demographic, anthropometric, and biochemical data was explored. Results: This randomized study comprised 94 patients (70 women, 24 men; mean [SD] age, 36.5 [9.7] years; mean [SD] BMI, 28.4 [4.2] kg/m(2)). Forty-nine (52.1%) patients reported self-treatment with weight-loss CTPs; 40 (42.6%) patients used complementary products, and 21 (22.3%) used complementary therapies. Among the products, inadequately identified herbal medicines (ie, absence of available information concerning the composition of the products or information could not be obtained from the patient [many of the products used were not authorized for distribution in Colombia]), folkloric or home remedies, and commercial diets were most commonly used (40.0%, 40.0%, and 27.5%, respectively). The use of CTPs was more prevalent in women compared with men (P < 0.001; odds ratio [OR] = 6.43). In women, CTP use was significantly higher in patients with a higher educational level (P = 0.008; OR = 3.82) and in those who were single (P = 0.038; OR = 2.97). The use of CTPs was also more frequent in patients with a negative view of their current nutritional therapy (P = 0.002; OR = 6.8). Conclusions: In the small group of overweight and obese patients in this study, 52.1% used CTPs. In obese women, those with a higher educational level and/or who were single were more likely to use CTPs. Patients were also more likely to use CTPs if they had a negative view of their current nutritional therapy. (Curr Ther Res Clin Exp. 2006;67:66-78) Copyright (c) 2006 Excerpta Medica, Inc. C1 Univ Antioquia, Fac Pharmaceut Chem, Medellin, Colombia. Univ Granada, Res Grp Pharmaceut Care, Granada, Spain. Univ Antioquia, Sch Nutr & Dietet, Medellin, Colombia. Univ Antioquia, Res Grp Human Nutr, Medellin, Colombia. RP Amariles, P, Univ Antioquia, Fac Pharmaceut Chem, AA 1226, Medellin, Colombia. EM pamaris@farmacia.udea.edu.co NR 39 TC 0 PU EXCERPTA MEDICA INC PI NEW YORK PA 650 AVENUE OF THE AMERICAS, NEW YORK, NY 10011 USA SN 0011-393X J9 CURR THER RES JI Curr. Ther. Res.-Clin. Exp. PD JAN-FEB PY 2006 VL 67 IS 1 BP 66 EP 78 DI 10.1016/j.curtheres.2006.02.001 PG 13 SC Medicine, Research & Experimental; Pharmacology & Pharmacy GA 024LM UT ISI:000236196500005 ER PT J AU Delgado, M Olavarrieta, P Vergara, P TI Fuzzy set based protocols for process quality control SO INTERNATIONAL JOURNAL OF UNCERTAINTY FUZZINESS AND KNOWLEDGE-BASED SYSTEMS LA English DT Article DE control; fuzzy; statistical; quality AB Industrial process quality control has as yet been carried out using Shewhart's classic charts and control charts with probabilistic limits, using sampling statistics for average and deviation (m) over cap and (sigma) over cap, respectively, or C-p and C-pk, derived from them, in order to determine whether the process is precise or imprecise. Although these statistics has been formulated using crisp mathematics, their use returns statements about "quality control" which are full of vagueness (for example, the aforementioned idea of precise or imprecise processes). For this reason, it seems both natural and interesting to introduce tools from Fuzzy Sets Theory for the formulation of quality control models. Fuzzy Sets shall be used to study process quality capability and to generate a bilateral simultaneous control for the central tendency and a unilateral one for variability. We shall define linguistic rules in order to perform this control and membership functions for the sample control mean and deviation, (x) over cap and (s) over cap. C1 Dept Comp Sci, Granada 18071, Spain. AI Univ Granada, Granada 18071, Spain. Univ Tecnol Metropolitana, Dept Elect, Santiago, Chile. Univ Tecnol Metropolitana, Dept Ind, Santiago, Chile. RP Delgado, M, Dept Comp Sci, Granada 18071, Spain. EM mdelgado@ugr.es polavarr@utem.cl pvergara@utem.cl NR 12 TC 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0218-4885 J9 INT J UNCERTAIN FUZZ KNOWL-B JI Int. J. Uncertainty Fuzziness Knowl.-Based Syst. PD FEB PY 2006 VL 14 IS 1 BP 61 EP 76 PG 16 SC Computer Science, Artificial Intelligence GA 025BR UT ISI:000236240800006 ER PT J AU Bentolila, R Rivera, H Sanchez-Quevedo, MC TI Incontinentia pigmenti: A case report SO PEDIATRIC DENTISTRY LA English DT Article DE incontinentia; pigmenti; dental; oral; case; report; child ID AMELOGENESIS IMPERFECTA; ENAMEL AB Incontinentia pigmenti (IP) is a genodermatosis with an X-linked dominant mode of inheritance, characterized by ectodermal, mesodermal, neurological, ocular, and dental manifestations. The purpose of this case study was to report the oral and dental manifestations of an IP case in a Venezuelan pediatric patient. A 9 year-old Venezuelan girl was evaluated. She showed macular pigmented lesions in her face, trunk, back, legs, and fingers as well as abnormal hair distribution, alopecia on the vertex, and hypoplasia of eyebrows. During the dental examination, conical shaped-teeth and delayed dental eruption was evidenced. The microanalytical examination showed dentin without significant alterations in the mineralization except for hypermineralization in focal areas. In addition, a decrease in the enamel mineralization was observed. C1 Cent Univ Venezuela, Pedodont Grad Program, Caracas, Venezuela. Cent Univ Venezuela, Head Oral Histopathol Lab, Inst Dent Res, Caracas, Venezuela. Cent Univ Venezuela, Fac Dent, Caracas, Venezuela. Univ Granada, Fac Med & Dent, Histol Dept, Granada, Spain. RP Rivera, H, Cent Univ Venezuela, Pedodont Grad Program, Caracas, Venezuela. EM rivera_helen@hotmail.com NR 16 TC 1 PU AMER ACAD PEDIATRIC DENTISTRY PI CHICAGO PA 211 E CHICAGO AVENUE SUITE 1036, CHICAGO, IL 60611-2616 USA SN 0164-1263 J9 PEDIATR DENT JI Pediatr. Dent. PD JAN-FEB PY 2006 VL 28 IS 1 BP 54 EP 57 PG 4 SC Dentistry, Oral Surgery & Medicine; Pediatrics GA 028FQ UT ISI:000236472700010 ER PT J AU Soldan, OCP Vasquez, FV Varas, AG Cordon, GP Soto, JV Sanchez-Moreno, M Gonzalez, IR Lombardo, MRJ TI Intestinal parasitism in Peruvian children and molecular characterization of Cryptosporidium species SO PARASITOLOGY RESEARCH LA English DT Article ID PARVUM; INFECTION; IDENTIFICATION; EPIDEMIOLOGY; TRANSMISSION; APICOMPLEXA; DIARRHEA; LIMA AB Intestinal parasitism was studied in children of Trujillo (Peru) to create a prevention and control program. Fecal samples of 489 children were examined. The general prevalence of intestinal parasitosis was found to be 68%. The most frequent pathogenic enteroparasites were Giardia lamblia (26.4%), Cyclospora cayetanensis (13%), Hymenolepis nana (2%), Hymenolepis diminuta (1.6%), and Cryptosporidium spp. (1%). All these parasites appeared both in diarrheic and nondiarrheic children, except Cryptosporidium, which invariably caused diarrhea. Multiple parasitism was frequent, 45.6% of the children presenting two, three, or four intestinal parasites. Cryptosporidium was the only parasite that was not associated with the others. Only five children were affected of cryptosporidiosis, presenting explosive diarrhea, nausea, and vomiting. Cryptosporidium species and genotypes involved in the infantile cryptosporidiosis were determined by polymerase chain reaction-restriction fragment length polymorphism. Four children were parasitized by Cryptosporidium hominis and only one by Cryptosporidium parvum. Our results confirm that anthroponotic transmission of Cryptosporidium is predominant in Peru. C1 Univ Granada, Fac Ciencias, Dept Parasitol, Inst Biotecnol, E-18071 Granada, Spain. Univ Nacl Trujillo, Dept Microbiol & Parasitol, Trujillo, Peru. RP Soldan, OCP, Univ Granada, Fac Ciencias, Dept Parasitol, Inst Biotecnol, E-18071 Granada, Spain. NR 25 TC 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0932-0113 J9 PARASITOL RES JI Parasitol. Res. PD MAY PY 2006 VL 98 IS 6 BP 576 EP 581 DI 10.1007/s00436-005-0114-7 PG 6 SC Parasitology GA 028OZ UT ISI:000236499000013 ER PT J AU Prado, B Lizama, C Aguilera, M Ramos-Cormenzana, A Fuentes, S Campos, V Monteoliva-Sanchez, M TI Chromohalobacter nigrandesensis sp nov., a moderately halophilic, Gram-negative bacterium isolated from Lake Tebenquiche on the Atacama Saltern, Chile SO INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY LA English DT Article ID NUMERICAL TAXONOMY; SEQUENCE ALIGNMENT; ENVIRONMENTS; PHYLOGENY; GENUS; RODS AB A total of 52 strains of moderately halophilic bacteria isolated from hypersaline sediment of Lake Tebenquiche on the Atacama Saltern, Chile, were subjected to a taxonomic study. The morphological, physiological, biochemical and nutritional characteristics of the strains matched those described for the genus Chromohalobacter. Cells were Gram-negative, non-spore-forming, rod-shaped and motile. A black pigmentation was produced. One strain, designated LTS-4N(T), grew optimally at 32 degrees C. Growth occurred in media containing 0.5-25% (w/v) total salts; the optimum was 7.5 % (w/v) total salts. The pH range for growth was 5-10. The G+C content of the DNA of strain LTS-4N(T) was 59.8 mol%. Analysis of 16S rRNA gene sequence similarity revealed that strain LTS-4N(T) was closely related to Chromohalobacter species; however, DNA-DNA hybridization of representative strain LTS-4N(T) failed to associate the strain with any species of the genus Chromohalobacter with validly published names. Therefore, the name Chromohalobacter nigrandesensis sp. nov. is proposed. The type strain is LTS-4N(T) (=CECT 5315(T) = DSM 14323(T)). C1 Univ Granada, Dept Microbiol, Fac Pharm, E-18071 Granada, Spain. Univ Tecn Federico Santa Maria, Microbiol Lab, Vina Del Mar, Chile. Univ Antofagasta, Dept Med Technol, Fac Ciencias Salud, Antofagasta, Chile. Pontificia Univ Catolica Valparaiso, Lab Environm Microbiol, Valparaiso, Chile. RP Monteoliva-Sanchez, M, Univ Granada, Dept Microbiol, Fac Pharm, Campus Univ Cartuja S-N, E-18071 Granada, Spain. EM mmonteol@ugr.es NR 21 TC 10 PU SOC GENERAL MICROBIOLOGY PI READING PA MARLBOROUGH HOUSE, BASINGSTOKE RD, SPENCERS WOODS, READING RG7 1AG, BERKS, ENGLAND SN 1466-5026 J9 INT J SYST EVOL MICROBIOL JI Int. J. Syst. Evol. Microbiol. PD MAR PY 2006 VL 56 PN Part 3 BP 647 EP 651 DI 10.1099/ijs.0.63983-0 PG 5 SC Microbiology GA 028WP UT ISI:000236519800026 ER PT J AU Hiller, B Mota, AL Nemes, MC Osipov, AA Sampaio, M TI The role of hidden ambiguities in the linear sigma model with fermions SO NUCLEAR PHYSICS A DT Article ID NJL MODEL; IMPLICIT REGULARIZATION; DYNAMICAL MODEL; SUPERCONDUCTIVITY; VECTOR; PSEUDOPARTICLE; ANALOGY; VACUUM; MESONS AB The U-L(3) x U-R(3) linear sigma model (LSM) with quark degrees of freedom is used to show that radiative corrections generate undetermined finite contributions. Their origin is related to surface terms which are differences between divergent integrals with the same degree of divergence. The technique used to detect these ambiguities is an implicit regularization on basic divergent integrals that do not depend on external momenta. We show that such contributions are absorbed by renormalization or fixed by symmetry requirements. The general expression for surface terms is derived. Renormalization group coefficients are calculated, as well as relevant observables for this model, such as f(pi), f(k) and the pion and kaon form factors. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Fed Sao Joao Del Rei, Dept Ciencias Nat, Sao Joao Dei Rei, MG, Brazil. Univ Coimbra, Ctr Fis Teor, Dept Fis, P-3004516 Coimbra, Portugal. Univ Fed Minas Gerais, Inst Ciencias Exactas, Dept Fis, BR-30161970 Belo Horizonte, MG, Brazil. Joint Inst Nucl Res, Lab Nucl Problems, Dubna 141980, Moscow Region, Russia. Univ Granada, Fac Ciencias, Dept Fis Moderna, E-18071 Granada, Spain. RP Mota, AL, Univ Fed Sao Joao Del Rei, Dept Ciencias Nat, Sao Joao Dei Rei, MG, Brazil. EM motaal@ufsj.edu.br NR 41 TC 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD APR 17 PY 2006 VL 769 BP 53 EP 70 DI 10.1016/j.nuclphysa.2006.02.002 PG 18 SC Physics, Nuclear GA 029LW UT ISI:000236565200004 ER PT J AU Barrero, AF Herrador, MM Arteaga, P Rosas-Romero, A Arteaga, JF TI Antioxidant activity of diterpenes and polyphenols from Ophryosporus heptanthus SO JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY LA English DT Article DE diterpenes; polyphenols; antioxidant activity; Ophryosporus heptanthus ID CONSTITUENTS; DERIVATIVES; FLAVONOIDS; JAPONICA AB The antioxidant activity of 14 compounds (1-14) isolated from the ether and butanolic extracts of the aerial parts of Ophryosporus heptanthus has been assayed using a beta-carotene bleaching method and the DPPH technique. Compounds 1 and 13 showed the most potent antioxidant activity. Their structures have been established by spectroscopic techniques (mainly NMR). Compounds 7 and 12 are new natural products, and their structures have been confirmed by chemical synthesis. C1 Univ Granada, Fac Ciencias, Inst Biotecnol, Dept Quim Organ, E-18071 Granada, Spain. Univ Simon Bolivar, Dept Quim, Caracas 1080A, Venezuela. RP Barrero, AF, Univ Granada, Fac Ciencias, Inst Biotecnol, Dept Quim Organ, Campus Fuentenueva,S-N, E-18071 Granada, Spain. EM afbarre@ugr.es NR 26 TC 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0021-8561 J9 J AGR FOOD CHEM JI J. Agric. Food Chem. PD APR 5 PY 2006 VL 54 IS 7 BP 2537 EP 2542 DI 10.1021/jf0527549 PG 6 SC Agriculture, Multidisciplinary; Chemistry, Applied; Food Science & Technology GA 030IR UT ISI:000236628500012 ER PT J AU Oloriz, F Villasenor, AB TI Ceratosphinctes (Ammonitina, Kimmeridgian) in Mexico: from rare but typical inhabitant of west-Tethyan epioceanic and epicontinental waters to a geographically widespread ammonite genus SO GEOBIOS LA English DT Article DE ammonites; Ceratosphinctes; taphonomy; biostratigraphy; palacobiogeography; Kimmeridgian; Mexico ID NORTH-CENTRAL MEXICO; BASIN; TECTONICS; EVOLUTION; IBERIA; HYBONOTICERAS; STRATIGRAPHY; EXAMPLES; SOUTH AB Two specimens of Ceratosphinctes represent the first record of this taxon in Mexico (Mexican Huasteca), and are interpreted as Cerato-sphinctes rachistrophus amatitlaensis nov. subsp. The subspecies level is used with biogeographic significance, most probably indicating incoming propagules and adaptation to local environmental requirements. Biostratigraphy, based on agreement of the composition of the ammonite assemblage that included C rachistrophus amatitlaensis nov. subsp. and the previous interpretation of ammonite assemblages with Idoceras in Mexico by Villasenor et al., indicates precise correlation with Tethyan records (uppermost-Lower to lowermost-Upper Kimmeridgian). The dispersion pattern available for Ceratosphinctes is interpreted as related to ecospace enlargement during the relative sea-level highstand of the late-Early Kimmeridgian. (c) 2006 Elsevier SAS. All rights reserved. C1 Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. Univ Nacl Autonoma Mexico, Inst Geol, Dept Paleontol, Mexico City 04510, DF, Mexico. RP Oloriz, F, Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Ave Fuentenueva S-N, Granada 18002, Spain. EM foloriz@ugr.es NR 69 TC 0 PU ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER PI PARIS PA 23 RUE LINOIS, 75724 PARIS, FRANCE SN 0016-6995 J9 GEOBIOS-LYON JI Geobios PD MAR-APR PY 2006 VL 39 IS 2 BP 255 EP 266 DI 10.1016/j.geobios.2004.11.006 PG 12 SC Paleontology GA 032IW UT ISI:000236769100007 ER PT J AU Gil-Montoya, JA de Mello, ALF Cardenas, CB Lopez, IG TI Oral health protocol for the dependent institutionalized elderly SO GERIATRIC NURSING LA English DT Article ID NURSING-HOME RESIDENTS; CORONARY-HEART; SURGERY; CARE; RINSE; STAFF AB Establishing an oral hygiene protocol for the frail and functionally dependent elderly should be of special concern to health care providers. The previous assessment of a care center, including patients or residents and staff, allows an effective strategy to be designed. Oral health protocols are mainly based on the daily removal of bacterial plaque from teeth or prostheses (or both), cleaning of oral mucosa, and continual oral hydration. These practices are facilitated by the use of electric toothbrushes and products such as chlorhexidine, fluoride toothpastes, and rinses or gels for dry mouth. This type of protocol should include regular collaboration with dental professionals and provide a program of continuous training for nursing staff on oral health issues. C1 Univ Granada, Sch Dent, Dept Speical Care Dent & Gerodontol, Granada, Spain. Domiciliary Assistant Dent Program, Granada, Spain. Univ Fed Santa Catarina, Florianopolis, SC, Brazil. Univ Granada, Sch Dent, Granada, Spain. RP Gil-Montoya, JA, Univ Granada, Sch Dent, Dept Speical Care Dent & Gerodontol, Granada, Spain. NR 32 TC 3 PU MOSBY, INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 USA SN 0197-4572 J9 GERIATR NURS JI Geriatr. Nurs. PD MAR-APR PY 2006 VL 27 IS 2 BP 95 EP 101 DI 10.1016/j.gerinurse.2005.12.003 PG 7 SC Geriatrics & Gerontology; Gerontology; Nursing GA 034EU UT ISI:000236912500015 ER PT J AU Barrero, AF del Moral, JFQ Herrador, MM Loayza, I Sanchez, EM Arteaga, JF AF Barrero, Alejandro F. del Moral, Jose F. Quilez Herrador, M. Mar Loayza, Ingrid Sanchez, Elena M. Arteaga, Jesus F. TI Synthesis of five- to seven-membered polyfunctional terpenic carbocycles via Ti(III)-catalyzed radical cyclizations of epoxypolyprenes SO TETRAHEDRON LA English DT Article DE cyclization; epoxides; titanium; radical reaction; terpenoids ID ELECTRON-TRANSFER; STRAIGHTFORWARD SYNTHESIS; CASCADE CYCLIZATIONS; ORGANIC-SYNTHESIS; CHEMISTRY; TANDEM; EUDESMANOLIDES; SERRATENEDIOL; CATALYSIS; SYNTHASE AB Ring size on Ti(III)-mediated radical cyclization of monoepoxypolyprenoids can be controlled by varying the substitution pattern and/or the electronic distribution of the double bond involved in the ring closure. The feasibility of applying this idea to tandem cyclizations has also been proven. Besides, when a silyloxy function is located in a position to the oxirane ring of the acyclic polyprene, the cyclization leads to carbocyclic terpenoids doubly functionalized in the A ring with acceptable yields. These results widen significantly the scope of this methodology. (c) 2006 Elsevier Ltd. All rights reserved. C1 Univ Granada, Inst Biotechnol, Dept Organ Chem, E-18071 Granada, Spain. Univ Mayor San Simon, Fac Ciencias & Tecnol, Ctr Tecnol Agroind, Cochabamba, Bolivia. RP Barrero, AF, Univ Granada, Inst Biotechnol, Dept Organ Chem, Avda Fuentenueva, E-18071 Granada, Spain. EM afbarre@ugr.es NR 35 TC 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0040-4020 J9 TETRAHEDRON JI Tetrahedron PD MAY 29 PY 2006 VL 62 IS 22 BP 5215 EP 5222 DI 10.1016/j.tet.2005.12.067 PG 8 SC Chemistry, Organic GA 045ON UT ISI:000237751500006 ER PT J AU Torres-Gonzalez, F Lopez-Alvarez, M Torres-Gonzalez, F Runte-Geidel, A Ortiz, N TI MARISTAN Project: a qualitative multicentric study on stigma and schizophrenia. Introduction SO ACTA PSYCHIATRICA SCANDINAVICA LA English DT Meeting Abstract C1 Univ Granada, Granada, Spain. Fdn Andaluza Integrac Social Enfermo Mental, Seville, Spain. Concepcion Univ, Concepcion, Chile. NR 0 TC 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0001-690X J9 ACTA PSYCHIAT SCAND JI Acta Psychiatr. Scand. PY 2006 VL 114 SU Suppl. 431 BP 24 EP 24 PG 1 SC Psychiatry GA 046KX UT ISI:000237811600101 ER PT J AU Ortiz, N Torres-Gonzalez, F Valdivia, S TI Gender and stigma perceived in schizophrenia: an advance of the MARISTAN project SO ACTA PSYCHIATRICA SCANDINAVICA LA English DT Meeting Abstract C1 Concepcion Univ, Fac Med, Dpto Psiquiatria & Salud Mental, Concepcion, Chile. Univ Granada, Granada, Spain. NR 0 TC 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0001-690X J9 ACTA PSYCHIAT SCAND JI Acta Psychiatr. Scand. PY 2006 VL 114 SU Suppl. 431 BP 24 EP 24 PG 1 SC Psychiatry GA 046KX UT ISI:000237811600104 ER PT J AU Marchesi, C Garrido, CJ Godard, M Proenza, JA Gervilla, F Blanco-Moreno, J TI Petrogenesis of highly depleted peridotites and gabbroic rocks from the Mayari-Baracoa Ophiolitic Belt (eastern Cuba) SO CONTRIBUTIONS TO MINERALOGY AND PETROLOGY LA English DT Article ID MID-ATLANTIC RIDGE; PLATE-TECTONIC MODEL; MOHO TRANSITION ZONE; OCEANIC LOWER CRUST; ABYSSAL PERIDOTITES; UPPER-MANTLE; OMAN OPHIOLITE; TRACE-ELEMENTS; OROGENIC PERIDOTITE; MELT/ROCK REACTION AB The Moa-Baracoa and Mayari-Cristal massifs (eastern Cuba) are two ophiolitic complexes mainly constituted by harzburgite tectonites and minor dunites, cut by gabbroic dykes. The Moa-Baracoa massif exhibits a well developed Moho transition zone and an incomplete crustal section made up of layered gabbros and tectonically emplaced pillow basalts. A plutonic crustal section is absent in the Mayari-Cristal massif and mantle tectonites are in tectonic contact with arc-related volcanic rocks. Mantle peridotites are very refractory in terms of modal composition, whole rock major element and HREE contents implying that Moa-Baracoa and Mayari-Cristal harzburgites are residues after high degrees (20-30%) of partial melting. The relative enrichment of Th, Nb, Ta and LREE in peridotites is due to re-equilibration of melting residues with percolating melts. Peridotites lost on average 6 wt% of relative MgO by intense seafloor weathering. REE contents and Mg# of melts in equilibrium with cumulate gabbros from the Moho transition zone and crustal section of the Moa-Baracoa massif coincide with those of the spatially-related pillow basalts. On the other hand, no geochemical relation has been inferred between melt in equilibrium with Mayari-Cristal segregate and the spatially-related arc volcanics. Our results indicate that the Mayari-Baracoa Ophiolitic Belt formed at an original back-arc spreading centre. The Moa-Baracoa massif represents a portion of MORB-like lithosphere located nearby a back-arc mid-ocean spreading ridge, and the Mayari-Cristal massif represents a piece of transitional (MORB to IAT) mantle located closer to the paleo-volcanic arc than Moa-Baracoa. C1 Univ Granada, Fac Ciencias, CSIC, Inst Andaluz Ciencias Tierra,Dept Mineral & Petro, Granada 18002, Spain. Univ Montpellier 2, ISTEEM, Lab Tectonophys, Montpellier, France. Univ Barcelona, Fac Geol, Dept Cristalog Mineral & Diposits Minerals, Barcelona, Spain. Inst Super Minero Met Moa, Moa, Holguin, Cuba. RP Marchesi, C, Univ Granada, Fac Ciencias, CSIC, Inst Andaluz Ciencias Tierra,Dept Mineral & Petro, Ave Fuentenueva S-N, Granada 18002, Spain. EM claudio@ugr.es NR 67 TC 4 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0010-7999 J9 CONTRIB MINERAL PETROL JI Contrib. Mineral. Petrol. PD JUN PY 2006 VL 151 IS 6 BP 717 EP 736 DI 10.1007/s00410-006-0089-0 PG 20 SC Geochemistry & Geophysics; Mineralogy GA 046QA UT ISI:000237824900006 ER PT J AU Barrero, AF del Moral, JFQ Herrador, MM Arteaga, P Cortes, M Benites, J Rosellon, A AF Barrero, Alejandro F. del Moral, Jose F. Quilez Herrador, M. Mar Arteaga, Pilar Cortes, Manuel Benites, Julio Rosellon, Antonio TI Mild and rapid method for the generation of o-quinone methide intermediates. Synthesis of puupehedione analogues SO TETRAHEDRON LA English DT Article DE cyclisation; epoxides; titanium; radical reaction; terpenoids ID COMBINATORIAL LIBRARIES; PRIVILEGED STRUCTURES; BIOMIMETIC SYNTHESIS; EFFICIENT METHOD; PRODUCT; (+/-)-ALBOATRIN; CONSTRUCTION; PUUPEHENONE; BENZOPYRANS; ALKYLATION AB A route to simpler analogues to bioactive puupehedione derivatives involving a hetero Diels-Alder cycloaddition of a o-quinone methide is described. These intermediate species are generated via fluoride-induced desilylation of silyl derivatives of o-hydroxybenzyl iodides. Remarkable short reaction times and very mild experimental conditions are the main features of this method. (c) 2006 Elsevier Ltd. All rights reserved. C1 Univ Granada, Dept Organ Chem, Inst Biotechnol, E-18071 Granada, Spain. Pontificia Univ Catolica Chile, Fac Quim, Santiago, Chile. RP Barrero, AF, Univ Granada, Dept Organ Chem, Inst Biotechnol, Avda Fuentenueva, E-18071 Granada, Spain. EM afbarre@ugr.es NR 30 TC 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0040-4020 J9 TETRAHEDRON JI Tetrahedron PD JUN 19 PY 2006 VL 62 IS 25 BP 6012 EP 6017 DI 10.1016/j.tet.2006.04.004 PG 6 SC Chemistry, Organic GA 051OY UT ISI:000238171600021 ER PT S AU Krasnogor, N Terrazas, G Pelta, DA Ochoa, G AF Krasnogor, Natalio Terrazas, Graciela Pelta, David A. Ochoa, Gabriela TI A critical view of the evolutionary design of self-assembling systems SO ARTIFICIAL EVOLUTION SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article AB The automated design of systems which self-assemble is a fundamental cornerstone of nanotechnology. In this paper we review some work in which we have applied Evolutionary Algorithms (EAs) for the automated design of systems self-assembly. We will focus in three important minimalist self-assembly problems and we discuss the difficulties encountered while applying EAs to these test cases. We also suggest some promising lines of work that could possibly help overcome current limitations in the evolutionary design of self-assembling systems. C1 Univ Nottingham, Sch Comp Sci & Informat Technol, Automated Scheduling Optimisat & Planning Res Grp, Nottingham NG7 2RD, England. Univ Granada, Dept Ciencias Computac, ETSI Informat, E-18071 Granada, Spain. Univ Simon Bolivar, Dept Ciencias Computac, Caracas 1080, Venezuela. RP Krasnogor, N, Univ Nottingham, Sch Comp Sci & Informat Technol, Automated Scheduling Optimisat & Planning Res Grp, Nottingham NG7 2RD, England. EM nxk@cs.nott.ac.uk gzt@cs.nott.ac.uk dpe1ta@decsai.ugr.es gabro@ldc.usb.ve NR 17 TC 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 J9 LECT NOTE COMPUT SCI PY 2006 VL 3871 BP 179 EP 188 PG 10 SC Computer Science, Theory & Methods GA BEN14 UT ISI:000238246200016 ER PT J AU Fernandez, AM Sierra, JC Zubeidat, I Vera-Villarroel, P TI Sex differences in response to sexual and emotional infidelity among Spanish and Chilean students SO JOURNAL OF CROSS-CULTURAL PSYCHOLOGY LA English DT Article DE evolutionary psychology; jealousy; sexual infidelity; emotional infidelity; forced-choice methodology ID UNITED-STATES; EVOLUTIONARY; JEALOUSY; PERSPECTIVE; FANTASY; TESTS; GENDER AB This study evaluates sex differences in response to sexual and emotional infidelity in two Spanish-speaking samples. An extension of previous findings with Anglo, European, and Asian students leads to the prediction that men report being more distressed by sexual than by emotional infidelity, and women report the reverse. Five hundred and eleven students from Spain and Chile respond to a questionnaire consisting of forced-choice-scenarios. Significant sex differences in jealousy as a function of type of infidelity emerges and this is consistent with previous research on jealousy. C1 Univ Santiago Chile, Santiago, Chile. Univ Granada, Granada, Spain. RP Fernandez, AM, Univ Santiago Chile, Santiago, Chile. EM anfernan@lauca.usach.cl NR 28 TC 1 PU SAGE PUBLICATIONS INC PI THOUSAND OAKS PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA SN 0022-0221 J9 J CROSS-CULT PSYCHOL JI J. Cross-Cult. Psychol. PD JUL PY 2006 VL 37 IS 4 BP 359 EP 365 DI 10.1177/0022022106288747 PG 7 SC Psychology, Social GA 054PS UT ISI:000238391700001 ER PT J AU Santos, X Brito, JC Sillero, N Pleguezuelos, JM Llorente, GA Fahd, S Parellada, X TI Inferring habitat-suitability areas with ecological modelling techniques and GIS: A contribution to assess the conservation status of Vipera latastei SO BIOLOGICAL CONSERVATION LA English DT Article DE Vipera latastei; snakes; species conservation; ecological niche factor analysis; habitat suitability map ID NORTHERN PORTUGAL; EXTINCTION RISK; RANGE; DISTRIBUTIONS; BIODIVERSITY; POPULATION; STRATEGIES; MORTALITY; PATTERNS; SNAKES AB Some snakes are highly vulnerable to extinction due to several life history traits. However, the elusive behavior and secretive habits of some widespread species constrain the collection of demographic and ecological data necessary for the identification of extinction-prone species. In this scenario, the enhancement of ecological modelling techniques in Geographical Information Systems (GIS) is providing researchers with robust tools to apply to such species. This study has identified the environmental factors that limit the current distribution of Vipera latastei, a species with secretive behavior, and has evaluated how human activities affect its current conservation status, identifying areas of best habitat suitability in the Iberian Peninsula. Ecological-niche factor analysis (ENFA) indicated low marginality (0.299) and high tolerance (0.887) scores, suggesting strong tendency for the species to live in average conditions throughout the study area and to inhabit any of the environmental conditions. The analysis also revealed that this viper tends to select particular Mediterranean habitats, although topographic factors (altitude and slope) were the major environmental constraints for the Iberian distribution pattern of the species. The presence of other parapatric viper species in the north of the Iberian Peninsula (V. aspis and V seoanei) and two human-related variables (landscape transformation and human density) also had a negative relation with the occurrence of V. latastei. All factors can explain its absence in northern Iberia and its fragmented distribution as currently is found mostly in mountains and relatively undisturbed low-altitude areas. The historical destruction and alteration of natural Mediterranean habitats and several life-history traits of the species contribute to its vulnerability to extinction. The ENFA analysis proved to be an outstanding method to evaluate the factors that limit the distribution range of secretive and widespread species such as V. latastei, updating evaluation of their conservation status. (c) 2005 Elsevier Ltd. All rights reserved. C1 Univ Granada, Dept Biol Anim, E-18071 Granada, Spain. Univ Barcelona, Dept Biol Anim Vertebrats, E-08028 Barcelona, Spain. Univ Porto, CIBIO, Ctr Invest Biodiversidade & Recursos Genet, Inst Ciencia Agr Vairao, P-4485661 Vairao, Portugal. Univ Abdelmalek Essaadi, Fac Sci, Dept Biol, Tatouan, Mexico. Generalitat Catalunya, Dept Med Ambient, Serv Proteccio Fauna, E-08017 Barcelona, Spain. RP Santos, X, Univ Granada, Dept Biol Anim, E-18071 Granada, Spain. EM xsantos1@ugr.es NR 75 TC 8 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0006-3207 J9 BIOL CONSERV JI Biol. Conserv. PD JUL PY 2006 VL 130 IS 3 BP 416 EP 425 DI 10.1016/j.biocon.2006.01.003 PG 10 SC Biodiversity Conservation; Ecology; Environmental Sciences GA 055CO UT ISI:000238427800010 ER PT J AU Jara, E Vila, J Maldonado, A TI Second-order conditioning of human causal learning SO LEARNING AND MOTIVATION LA English DT Article DE pavlovian conditioning; second-order conditioning; extinction; causal learning ID CONTINGENCY; COMPETITION; KNOWLEDGE; STIMULUS AB This article provides the first demonstration of a reliable second-order conditioning (SOC) effect in human causal learning tasks. It demonstrates the human ability to infer relationships between a cause and an effect that were never paired together during training. Experiments 1a and 1b showed a clear and reliable SOC effect, while Experiments 2a and 2b demonstrated that first-order extinction did not affect SOC. These results were similar to those found in animal and human conditioning and suggested that a similar associative mechanism could explain these effects. However, they can also be used to look into the underlying causal mental model people build and store while they are learning this task. From a cognitive view, overall results suggest that an independent rather than a chain causal mental model is stored after second-order learning in human causal tasks. (c) 2005 Elsevier Inc. All rights reserved. C1 Univ Nacl Autonoma Mexico, Mexico City, DF, Mexico. Univ Granada, E-18071 Granada, Spain. RP Vila, J, Univ Nacl Autonoma Mexico, Mexico City, DF, Mexico. EM javila@cablevision.net.mx NR 37 TC 3 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0023-9690 J9 LEARN MOTIV JI Learn. Motiv. PD AUG PY 2006 VL 37 IS 3 BP 230 EP 246 DI 10.1016/j.lmot.2005.12.001 PG 17 SC Psychology, Biological; Psychology, Experimental GA 055MP UT ISI:000238455100003 ER PT J AU Barrero, AF del Moral, JFQ Herrador, MM Cortes, M Arteaga, P Catalan, JV Sanchez, EM Arteaga, JF AF Barrero, Alejandro F. Quilez del Moral, Jose F. Mar Herrador, M. Cortes, Manuel Arteaga, Pilar Catalan, Julieta V. Sanchez, Elena M. Arteaga, Jesus F. TI Solid-phase selenium-catalyzed selective allylic chlorination of polyprenoids: Facile syntheses of biologically active terpenoids SO JOURNAL OF ORGANIC CHEMISTRY LA English DT Article ID ASYMMETRIC DIHYDROXYLATION; CONVENIENT SYNTHESIS; DERIVATIVES; SQUALENE; INHIBITORS; FARNESOL AB Regioselective halogenation of the terminal isopropylidene unit of different acyclic polyolefinic polyprenoids (farnesyl acetate, geranylgeranyl acetate, squalene, etc.) using NCS/ catalytic polymer-supported selenenyl bromide is described; good to excellent yields are obtained (68-96%). The first applications of this protocol include the concise synthesis of bioactive terpenoids 1-3. C1 Univ Granada, Inst Biotechnol, Dept Organ Chem, E-18071 Granada, Spain. Pontificia Univ Catolica Chile, Fac Quim, Santiago, Chile. RP Barrero, AF, Univ Granada, Inst Biotechnol, Dept Organ Chem, Avda Fuentenueva, E-18071 Granada, Spain. EM afbarre@goliat.ugr.es NR 30 TC 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0022-3263 J9 J ORG CHEM JI J. Org. Chem. PD JUL 21 PY 2006 VL 71 IS 15 BP 5811 EP 5814 DI 10.1021/jo060760d PG 4 SC Chemistry, Organic GA 063KQ UT ISI:000239017500055 ER PT J AU Farnier, M Roth, E Gil-Extremera, B Mendez, GF Perevozskaya, I Hamlin, C Macdonell, G Davies, M Kush, D Mitchel, Y AF Farnier, M. Roth, E. Gil-Extremera, B. Mendez, G. F. Perevozskaya, I. Hamlin, C. Macdonell, G. Davies, M. Kush, D. Mitchel, Y. TI Efficacy and safety of co-administered ezetimibe/simvastatin (EZE/SIMVA) and fenofibrate (FENO) in patients with mixed hyperlipidemia SO ATHEROSCLEROSIS SUPPLEMENTS LA English DT Meeting Abstract C1 Point Med, Djion, France. Sterling Res Grp, Cincinnati, OH USA. Univ Granada, E-18071 Granada, Spain. Umae Hosp, Veracruz, Mexico. Merck & Co Inc, Rahway, NJ 07065 USA. NR 0 TC 0 PU ELSEVIER IRELAND LTD PI CLARE PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000, IRELAND SN 1567-5688 J9 ATHEROSCLER SUPPL JI Atheroscler. Suppl. PD JUN PY 2006 VL 7 IS 3 BP 174 EP 174 PG 1 SC Peripheral Vascular Disease GA 064MN UT ISI:000239093901088 ER PT J AU Clemente-Leon, M Coronado, E Soriano-Portillo, A Colacio, E Dominguez-Vera, JM Galvez, N Madueno, R Martin-Romero, MT AF Clemente-Leon, Miguel Coronado, Eugenio Soriano-Portillo, Alejandra Colacio, Enrique Dominguez-Vera, Jose M. Galvez, Natividad Madueno, Rafael Martin-Romero, Maria T. TI Magnetic Langmuir-Blodgett films of ferritin with different iron contents SO LANGMUIR LA English DT Article ID INDIUM OXIDE ELECTRODES; SQUARE GRID NETWORK; ARTIFICIAL FERRITIN; MONOLAYERS; NANOPARTICLES; MULTILAYERS; FABRICATION; ADSORPTION; INTERFACES; BEHAVIOR AB Magnetic Langmuir-Blodgett films of four ferritin derivatives with different iron contents containing 4220, 3062, 2200, and 1200 iron atoms, respectively, have been prepared by using the adsorption properties of a 6/1 mixed monolayer of methyl stearate ( SME) and dioctadecyldimethylammonium bromide ( DODA). The molecular organization of the mixed SME/DODA monolayer is strongly affected by the presence of the water-soluble protein in the subphase as shown by pi-A isotherms, BAM images, and imaging ellipsometry at the water-air interface. BAM images reveal the heterogeneity of this mixed monolayer at the air-water interface. We propose that the ferritin is located under the mixed matrix in those regions where the reflectivity is higher whereas the dark regions correspond to the matrix. Ellipsometric angle measurements performed in zones of different brightness of the mixed monolayer confirm such a heterogeneous distribution of the protein under the lipid matrix. Transfer of the monolayer onto different substrates allowed the preparation of multilayer LB films of ferritin. Both infrared and UV-vis spectroscopy indicate that ferritin molecules are incorporated within the LB films. AFM measurements show that the heterogeneous distribution of the ferritin at the water-air interface is maintained when it is transferred onto solid substrates. Magnetic measurements show that the superparamagnetic properties of these molecules are preserved. Thus, marked hysteresis loops of magnetization are obtained below 20 K with coercive fields that depend on the number of iron atoms of the ferritin derivative. C1 Univ Valencia, Inst Ciencia Mol, Paterna 46980, Spain. Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. Univ Cordoba, Dept Quim Fis & Termodinam Aplicada, RA-14014 Cordoba, Argentina. RP Clemente-Leon, M, Univ Valencia, Inst Ciencia Mol, Poligono Coma S-N, Paterna 46980, Spain. EM miguel.clemente@uv.es eugenio.coronado@uv.es josema@ugr.es NR 35 TC 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD AUG 1 PY 2006 VL 22 IS 16 BP 6993 EP 7000 DI 10.1021/la061284p PG 8 SC Chemistry, Physical GA 066OB UT ISI:000239238100043 ER PT J AU Correa, R Chesta, MA Morales, JR Dinator, MI Requena, I Vila, I AF Correa, R. Chesta, M. A. Morales, J. R. Dinator, M. I. Requena, I. Vila, I. TI Artificial neural networks applied to quantitative elemental analysis of organic material using PIXE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE artificial neural networks; PIXE ID HIGH-ENERGY; SPECTRA; PHYSICS AB An artificial neural network (ANN) has been trained with real-sample PIXE (particle X-ray induced emission) spectra of organic substances. Following the training stage ANN was applied to a subset of similar samples thus obtaining the elemental concentrations in muscle, liver and gills of Cyprinus carpio. Concentrations obtained with the ANN method are in full agreement with results from one standard analytical procedure, showing the high potentiality of ANN in PIXE quantitative analyses. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Nacl Cordoba, Fac Matemat Astron & Fis, RA-5000 Cordoba, Argentina. Univ Tecnol Metropolitana, Dept Fis, Santiago, Chile. Univ Chile, Fac Ciencias, Dept Fis, Santiago, Chile. Univ Granada, Dept Ciencias Computac & Inteligencia Artificial, E-18071 Granada, Spain. Univ Chile, Fac Ciencias, Dept Ecol, Santiago, Chile. RP Chesta, MA, Univ Nacl Cordoba, Fac Matemat Astron & Fis, Medina Allende S-N,Ciudad Univ, RA-5000 Cordoba, Argentina. EM rcorrea@utem.cl chesta@famaf.unc.edu.ar rmorales@uchile.cl mdinator@uchile.cl requena@decsai.ugr.es limnolog@uchile.cl NR 30 TC 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH PHYS RES B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD AUG PY 2006 VL 248 IS 2 BP 324 EP 328 DI 10.1016/j.nimb.2006.05.001 PG 5 SC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear GA 066XW UT ISI:000239264900016 ER PT J AU Martin, F Batista, VR AF Martin, Francisco Batista, Valerio Ramos TI The embedded singly periodic Scherk-Costa surfaces SO MATHEMATISCHE ANNALEN LA English DT Article ID MINIMAL-SURFACES AB We give a positive answer to M. Traizet's open question about the existence of complete embedded minimal surfaces with Scherk-ends without planar geodesics. In the singly periodic case, these examples get close to an extension of Traizet's result concerning asymmetric complete minimal submanifolds of IR3 with finite total curvature. C1 Univ Granada, Dept Geometria & Topol, E-18071 Granada, Spain. Univ Estadual Campinas, IMECC, BR-13083970 Campinas, SP, Brazil. RP Martin, F, Univ Granada, Dept Geometria & Topol, E-18071 Granada, Spain. EM fmartin@ugr.es valerio@ime.unicamp.br NR 21 TC 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0025-5831 J9 MATH ANN JI Math. Ann. PD SEP PY 2006 VL 336 IS 1 BP 155 EP 189 DI 10.1007/s00208-006-0778-z PG 35 SC Mathematics GA 067KE UT ISI:000239299900007 ER PT J AU Campos, A Sanchez-Quevedo, MC Fernandez-Segura, E Moreu, G Rodriguez, IA Alaminos, M AF Campos, A. Sanchez-Quevedo, M. C. Fernandez-Segura, E. Moreu, G. Rodriguez, I. A. Alaminos, M. TI Evaluation of the cytotoxicity of 2-hydroxymethylmethacrylate (HEMA) used as a biomaterial in tissue engineering SO CYTOTHERAPY LA English DT Meeting Abstract C1 Univ Granada, Dept Histol, Granada, Spain. Univ Granada, Dept Stomatol, Granada, Spain. Univ Cordoba, Dept Stomatol, Cordoba, Argentina. Fundac Hosp Clin, Granada, Spain. NR 0 TC 1 PU TAYLOR & FRANCIS AS PI OSLO PA PO BOX 12 POSTHUSET, NO-0051 OSLO, NORWAY SN 1465-3249 J9 CYTOTHERAPY JI Cytotherapy PY 2006 VL 8 SU Suppl. 2 BP 46 EP 46 PG 1 SC Biotechnology & Applied Microbiology; Cell Biology; Hematology; Medicine, Research & Experimental GA 067YD UT ISI:000239337800167 ER PT J AU Gonzalez-Lopez, S Camejo-Aguilar, D Sanchez-Sanchez, P Bolanos-Carmona, V AF Gonzalez-Lopez, S. Camejo-Aguilar, D. Sanchez-Sanchez, P. Bolanos-Carmona, V. TI Effect of CHX on the decalcifying effect of 10% citric acid, 20% citric acid, or 17% EDTA SO JOURNAL OF ENDODONTICS LA English DT Article DE bovine teeth; chlorhexidine; citric acid; demineralization; dentin; disinfection; EDTA; endodontics; spectrophometry ID ROOT-CANAL DENTIN; RESIDUAL ANTIMICROBIAL ACTIVITY; SMEAR LAYER REMOVAL; SODIUM-HYPOCHLORITE; ENDODONTIC IRRIGANTS; CHLORHEXIDINE; IRRIGATION; TIME; ANTIBACTERIAL; ABILITY AB The objective of this study was to measure the demineralization capacity of 10% and 20% citric acid and 17% EDTA after three time periods and to determine whether it was modified by the addition of 1% of commercial chlorhexidine (CHX). Three slices of 2-mm thickness were cut from the cervical third of the root of ten bovine incisors and sectioned into two equal parts, obtaining six specimens per tooth. Specimens were assigned to one of six groups (n = 10) for immersion in 25 ml of the above mentioned solutions or 25 ml of these same solutions plus 1% CHX (Hibimax). At 3, 10, and 15 min of immersion, the concentration of Ca2+ was measured by atomic absorption spectrophometry. The demineralization effect of all solutions was time-dependent (F = 158,448; p < 0.001), without significant differences among them (p = 0.783). Addition of 1% CHX did not modify the demineralizing capacity of these solutions. in the first three minutes, significantly more [Ca2+] was obtained when 17% EDTA was used in comparison with the other solutions. C1 Univ Granada, Fac Dent, Dept Operat Dent, E-18071 Granada, Spain. Univ Granada, Fac Sci, Dept Inorgan Chem, Granada, Spain. Univ Los Andes, Fac Odontol, Dept Operat Dent, Merida, Venezuela. RP Gonzalez-Lopez, S, Univ Granada, Fac Dent, Dept Operat Dent, Campus Cartuja, E-18071 Granada, Spain. EM sglopez@ugr.es NR 25 TC 7 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0099-2399 J9 J ENDODONT JI J. Endod. PD AUG PY 2006 VL 32 IS 8 BP 781 EP 784 DI 10.1016/j.joen.2006.02.006 PG 4 SC Dentistry, Oral Surgery & Medicine GA 068VJ UT ISI:000239402300015 ER PT J AU Crespillo, M Paredes, MR Prieto, L Montesino, M Salas, A Albarran, C Alvarez-Iglesias, V Amorin, A Berniell-Lee, G Brehm, A Carril, JC Corach, D Cuevas, N Di Lonardo, AM Doutremepuich, C Espinheira, RM Espinoza, M Gomez, F Gonzalez, A Hernandez, A Hidalgo, M Jimenez, M Leite, FPN Lopez, AM Lopez-Soto, M Lorente, JA Pagano, S Palacio, AM Pestano, JJ Pinheiro, MF Raimondi, E Ramon, MM Tovar, F Vidal-Rioja, L Vide, MC Whittle, MR Yunis, JJ Garcia-Hirschfel, J AF Crespillo, Manuel Paredes, Miguel R. Prieto, Lourdes Montesino, Marta Salas, Antonio Albarran, Cristina Alvarez-Iglesias, V Amorin, Antonio Berniell-Lee, Gemma Brehm, Antonio Carril, Juan C. Corach, Daniel Cuevas, Nerea Di Lonardo, Ana M. Doutremepuich, Christian Espinheira, Rosa M. Espinoza, Marta Gomez, Felix Gonzalez, Alberto Hernandez, Alexis Hidalgo, M. Jimenez, Magda Leite, Fabio P. N. Lopez, Ana M. Lopez-Soto, Manuel Lorente, Jose A. Pagano, Shintia Palacio, Ana M. Pestano, Jose J. Pinheiro, Maria F. Raimondi, Eduardo Ramon, M. M. Tovar, Florangel Vidal-Rioja, Lidia Vide, Maria C. Whittle, Martin R. Yunis, Juan J. Garcia-Hirschfel, Julia TI Results of the 2003-2004 GEP-ISFG collaborative study on mitochondrial DNA: Focus on the mtDNA profile of a mixed semen-saliva stain SO FORENSIC SCIENCE INTERNATIONAL LA English DT Article DE mtDNA; standardization; collaborative exercise; mixed samples; control region; SNPs ID PROFICIENCY TESTING PROGRAM; WORKING GROUP; INTERNATIONAL SOCIETY; FORENSIC GENETICS; EDNAP GROUP; HETEROPLASMY; EXERCISES; SPANISH; HAIR; EVOLUTION AB We report here a review of the seventh mitochondrial DNA (mtDNA) exercise undertaken by the Spanish and Portuguese working group (GEP) of the International Society for Forensic Genetics (ISFG) corresponding to the period 2003-2004. Five reference bloodstains from five donors (M1-M5), a mixed stain of saliva and semen (M6), and a hair sample (M7) were submitted to each participating laboratory for nuclear DNA (nDNA; autosomal STR and Y-STR) and mtDNA analysis. Laboratories were asked to investigate the contributors of samples M6 and M7 among the reference donors (M1-M5). A total of 34 laboratories reported total or partial mtDNA sequence data from both, the reference bloodstains (M1-M5) and the hair sample (M7) concluding a match between mtDNA profiles of M5 and NIT Autosomal STR and Y-STR profiling was the prefer-red strategy to investigate the contributors of the semen/saliva mixture (M6). Nuclear DNA profiles were consistent with a mixture of saliva from the donor (female) of M4 and semen from donor M5, being the semen (XY) profile the dominant component of the mixture. Strikingly, and in contradiction to the nuclear DNA analysis, mtDNA sequencing results yield a more simple result: only the saliva contribution (M4) was detected, either after preferential lysis or after complete DNA digestion. Some labs provided with several explanations for this finding and carried out additional experiments to explain this apparent contradictory result. The results pointed to the existence of different relative amounts of nuclear and mtDNAs in saliva and semen. We conclude that this circumstance could strongly influence the interpretation of the mtDNA evidence in unbalanced mixtures and in consequence lead to false exclusions. During the GEP-ISFG annual conference a validation study was planned to progress in the interpretation of mtDNA from different mixtures. (c) 2005 Elsevier Ireland Ltd. All rights reserved. C1 Inst Nacl Toxicol & Ciencias Forenses, Serv Biol, Barcelona, Spain. Comisaria Gen Policia Cient, Biol Sect, ADN, Madrid, Spain. Univ Santiago de Compostela, Inst Med Legal, Fac Med, Unidad Genet, La Coruna, Spain. Inst Nacl Toxicol & Ciencias Forenses, Serv Biol, Madrid, Spain. Univ Porto, Inst Patol & Imunol Mol, P-4100 Oporto, Portugal. Univ Pompeu Fabra, Unitat Biol Evolut, Barcelona, Spain. Univ Madeira, Ctr Biol & Geol Sci, Funchal, Portugal. GENOMICA SAU, Dept Biol Forense, Madrid, Spain. Univ Buenos Aires, Fac Farm & Bioquim, Serv Huellas Digitales Genet, RA-1113 Buenos Aires, DF, Argentina. DataGene, Bizkaia, Spain. Hosp Dr CG Durand, Banco Nacl Datos Genet, Buenos Aires, DF, Argentina. Hematol Lab, Bordeaux, France. Inst Nacl Med Legal, Delegacao Lisboa, Serv Genet & Biol Forense, Lisbon, Portugal. Dept Ciencias Forensese, Unidad Genet Forense, Poder Judicial, Heredia, Costa Rica. Biopatol Med Legal, Madrid, Spain. ADF TecnoGen SL, Madrid, Spain. Inst Nacl Toxicol & Ciencias Forense, Serv Biol, Tenerife, Spain. Serv Criminalist Guardia Civil, Lab Dept Biol, Madrid, Spain. Inst Nacl Med Legal & Ciencias Forenses Santa Fe, Lab DNA, Bogota, Colombia. Univ Complutense Madrid, Fac Med, Dept Med Legal & Forense, E-28040 Madrid, Spain. Inst Nacl Toxicol & Ciencias Forenses, Serv Biol, Seville, Spain. Univ Granada, Dept Med Legal, Lab Identificac Genet, Granada, Spain. Direcc Nacl Policia Tecn Montevideo, Biol Lab, Montevideo, Uruguay. Ctr Anal Genet CAGT, Zaragoza, Spain. Inst Anat Forense, Fac Med, Genet Lab, Las Palmas Gran Canaria, Spain. Inst Med Legal Oporto, Serv Biol Forense, Oporto, Portugal. PRICAI Fdn Favaloro, Buenos Aires, DF, Argentina. Unidad Polimorfismos Genet, Caracas, Venezuela. IMBICE, Lab Identificac Genet, La Plata, Buenos Aires, Argentina. Inst Med Legal, Serv Biol Forense, Coimbra, Portugal. Genom Engn Mol LTDA, Sao Paulo, Brazil. Santafe Bogota DC, Serv Med Yunis Turbay & Cia, Bogota, Colombia. Inst Nacl Toxicol & Ciencias Forenses, Unidad Garantia Calidad, Madrid, Spain. RP Crespillo, M, Inst Nacl Toxicol & Ciencias Forenses, Serv Biol, Barcelona, Spain. EM manuel.crespillo@mju.es NR 24 TC 2 PU ELSEVIER IRELAND LTD PI CLARE PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000, IRELAND SN 0379-0738 J9 FORENSIC SCI INT JI Forensic Sci.Int. PD JUL 13 PY 2006 VL 160 IS 2-3 BP 157 EP 167 DI 10.1016/j.forsciint.2005.09.005 PG 11 SC Medicine, Legal GA 069SN UT ISI:000239468600010 ER PT J AU Rozas, M Richer, MG Lopez, JA Relano, M Beckman, JE AF Rozas, M. Richer, M. G. Lopez, J. A. Relano, M. Beckman, J. E. TI H alpha line profiles for a sample of supergiant HII regions I. The main spectral component SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE ISM : HII regions; ISM : kinematics and dynamics ID GRAND-DESIGN GALAXIES; SPIRAL GALAXIES; STAR-FORMATION; ECHELLE SPECTROMETER; VELOCITY DISPERSION; INTERSTELLAR-MEDIUM; HUBBLE SEQUENCE; GIANT; DENSITY; PARAMETERS AB We present an analysis of the Ha emission line profiles of a sample of giant extragalactic HII regions, selected from among the brightest and most isolated in a group of spiral galaxies for which we have photometric and spectroscopic data: NGC 157, NGC 3631, NGC 6764, NGC 3344, NGC 4321, NGC 5364, NGC 5055, NGC 5985, NGC 7479. Our study confirms that the majority of the line profiles are composed of a bright, main component and two fainter, high velocity components that we denominate wings. Here, we analyze the kinematics of the principal components, finding a relation between the Ha luminosity, L-Ha, and the turbulent velocity dispersion, sigma(nt). A linear fit to the relation between these quantities yields log L-H alpha = (35.6 +/- 0.4) + (2.87 +/- 0.2) log sigma (nt), in agreement with previous studies. We compute the mass of each HII region using both the virial theorem and the Ha luminosity, confirming that, though these estimates do not coincide exactly, they are comparable within the uncertainties and consequently that the HII regions in our sample are approximately virialized. C1 Univ Nacl Autonoma Mexico, Inst Astron, Ensenada, Baja California, Mexico. Univ Granada, Fac Fac Fis Teor & Cosmos, E-18071 Granada, Spain. Inst Astrofis Canarias, Tenerife, Spain. RP Rozas, M, Univ Nacl Autonoma Mexico, Inst Astron, Ensenada, Baja California, Mexico. EM maite@astrosen.unam.mx mrelano@ugr.es jeb@iac.es NR 41 TC 2 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD AUG PY 2006 VL 455 IS 2 BP 539 EP 547 DI 10.1051/0004-6361:20054388 PG 9 SC Astronomy & Astrophysics GA 070XM UT ISI:000239560000020 ER PT J AU Rozas, M Richer, MG Lopez, JA Relano, M Beckman, JE AF Rozas, M. Richer, M. G. Lopez, J. A. Relano, M. Beckman, J. E. TI H alpha line profiles for a sample of supergiant HII regions II. Broad, low intensity components SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE ISM : HII regions; ISM : kinematics and dynamics ID WOLF-RAYET STARS; VELOCITY DISPERSION; INTERSTELLAR-MEDIUM; SPIRAL GALAXIES; NGC-604; KINEMATICS; IONIZATION; 30-DORADUS; TURBULENCE; CLUSTERS AB We analyze the broad, low intensity, high velocity components that are seen in the Ha line profiles for a sample of HII regions. These HII regions are chosen from among the brightest and most isolated in a sample of spiral galaxies for which we have photometric and spectroscopic data: NGC 157, NGC 3631, NGC 6764, NGC 3344, NGC 4321, NGC 5364, NGC 5055, NGC 5985, and NGC 7479. We confirm that the line profiles of most of these bright, giant extragalactic HII regions contain broad kinematic components of low intensity, but high velocity, that we denote as wings. We analyze these components, deriving emission measures, central velocities, and velocity dispersions of the blue and red features, which are similar. We interpret these components as expanding shells within the HII regions and produced by the stellar winds from the ionizing stars. We compare the kinetic energies of these expanding shells with the kinetic energy available from the stellar winds. If we allow for the hypothesis that the brightest HII regions are density bounded, we show that, for these HII regions, the stellar wind mechanism can explain the observed shell kinetic energies. C1 Univ Nacl Autonoma Mexico, Inst Astron, Ensenada, Baja California, Mexico. Univ Granada, Fac Fis Teor & Cosmos, E-18071 Granada, Spain. Inst Astrofis Canarias, Tenerife, Spain. RP Rozas, M, Univ Nacl Autonoma Mexico, Inst Astron, Ensenada, Baja California, Mexico. EM maite@astrosen.unam.mx mrelano@ugr.es jeb@iac.es NR 36 TC 2 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD AUG PY 2006 VL 455 IS 2 BP 549 EP 559 DI 10.1051/0004-6361:20054389 PG 11 SC Astronomy & Astrophysics GA 070XM UT ISI:000239560000021 ER PT J AU Lopez-Palomino, RI Villasenlor-Martinez, AB Oloriz-Saez, F AF Lopez-Palomino, Rosario Isabel Villasenlor-Martinez, Ana Bertha Oloriz-Saez, Federico TI First record of the genus Vinalesphinctes (Ammonitina) in the Oxfordian of Mexico: Biostratigraphic and paleobiogeographic significance in the Upper Jurassic of the Americas SO REVISTA MEXICANA DE CIENCIAS GEOLOGICAS LA Spanish DT Article DE ammonites; biostratigraphy; upper Jurassic; Oxfordian; Mexico AB The genus Vinalesphinctes (Ammonitina) is reported for the first time from Mexico. The studied specimens were collected from two Oxfordian sections of the east-central Mexico, Huasteca region, Hidalgo and San Luis Potosi states. Two morphospecies have been identified, Vinalesphinctes tamanensis and Vinalesphinctes tenangensis. Mexican, Cuban and Chilean Vinalesphinctes are compared, and a late Oxfordian, Bifurcatus Chron age is interpreted for the Mexican forms. Within the context of limitations derived from the scarcity of the material available, the taxonomical differentiation proposed for Mexican Vinalesphinctes is in accordance with the ecological interpretation (i.e., envisaged habitat), and reinforces hypotheses about endemism affecting ammonites during the Chron Bifurcatus in the American regions considered However additional research is necessary before giving a conclusive interpretation about the causal factors for the ammonite scarcity during the Late Oxfordian of the Mexico-Caribbean region. C1 Univ Nacl Autonoma Mexico, Inst Geol, Dept Paleontol, Mexico City 04510, DF, Mexico. Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. RP Lopez-Palomino, RI, Univ Nacl Autonoma Mexico, Inst Geol, Dept Paleontol, Ciudad Univ,Del Coyoacan, Mexico City 04510, DF, Mexico. EM nicteha73@yahoo.com.mx NR 53 TC 1 PU CENTRO GEOCIENCIAS UNAM PI QUERETARO PA CENTRO GEOCIENCIAS, UNAM, CAMPUS JURIQUILLA, QUERETARO, QRO 76230, MEXICO SN 1026-8774 J9 REV MEX CIENC GEOL JI Rev. Mex. Cienc. Geol. PY 2006 VL 23 IS 2 BP 162 EP 183 PG 22 SC Geosciences, Multidisciplinary GA 071ZZ UT ISI:000239643700004 ER PT J AU Lodi, F Cogolludo, A Duarte, J Moreno, L Coviello, A de Bruno, MP Vera, R Galisteo, M Jimenez, R Tamargo, J Perez-Vizcaino, F AF Lodi, Federica Cogolludo, Angel Duarte, Juan Moreno, Laura Coviello, Alfredo Peral de Bruno, Maria Vera, Rocio Galisteo, Milagros Jimenez, Rosario Tamargo, Juan Perez-Vizcaino, Francisco TI Increased NADPH oxidase activity mediates spontaneous aortic tone in genetically hypertensive rats SO EUROPEAN JOURNAL OF PHARMACOLOGY LA English DT Article DE p47(phox); SHR (spontaneously hypertensive rat); spontaneous tone; superoxide ID VASCULAR SMOOTH-MUSCLE; NAD(P)H OXIDASE; NITRIC-OXIDE; ANGIOTENSIN-II; ENDOTHELIAL DYSFUNCTION; SUPEROXIDE-PRODUCTION; RESISTANCE ARTERIES; HYDROGEN-PEROXIDE; OXIDATIVE STRESS; BLOOD-PRESSURE AB NADPH oxidase is critically involved in increased blood pressure, vascular hypertrophy, inflammation and endothelial dysfunction in experimental and clinical hypertension. We hypothesized that NADPH oxidase might also play a role in the development of spontaneous aortic tone in spontaneously hypertensive rats (SHR). Wistar Kyoto rats (WKY) were used as normotensive controls. Tone was recorded under isometric conditions. NADPH oxidase activity was measured by both lucigenin luminescence and dihydroethidium fluorescence. p47(phox) protein was localized by immunohistochemistry. SHR (but not WKY rat) aortae showed spontaneous tone in the absence of exogenous vasoconstrictors as evidenced by a stronger relaxant effect of Ca2+-free sodium nitroprusside solution. This tone was enhanced in endothelium-denuded arteries and was inhibited by superoxide dismutase, apocynin, diphenylene iodonium and quercetin. Aortic NADPH oxidase activity, measured by both lucigenin luminescence and dihydroethidium fluorescence, was increased in SHR compared with WKY rats. Immunohistochemical analysis revealed a strong increase in p47(phox) expression in the medial layer in SHR. Taken together, the present results indicate that enhanced NADPH oxidase activity and, hence, NADPH driven O-2(-) production, is involved in the spontaneous aortic tone in SHR. This was associated with an increased expression of p47(phox) in the medial layer of the aorta. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Complutense, Sch Med, Inst Pharmacol & Toxicol, Dept Pharmacol, E-28040 Madrid, Spain. Univ Granada, Sch Pharm, Dept Pharmacol, E-18071 Granada, Spain. Univ Nacl Tucuman, INSIBIO, Dept Physiol, San Miguel De Tucuman, Argentina. RP Perez-Vizcaino, F, Univ Complutense, Sch Med, Inst Pharmacol & Toxicol, Dept Pharmacol, E-28040 Madrid, Spain. EM fperez@med.ucm.es NR 35 TC 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0014-2999 J9 EUR J PHARMACOL JI Eur. J. Pharmacol. PD AUG 21 PY 2006 VL 544 IS 1-3 BP 97 EP 103 DI 10.1016/j.ejphar.2006.06.028 PG 7 SC Pharmacology & Pharmacy GA 075BH UT ISI:000239856700013 ER PT J AU Ahualli, S Delgado, AV Grosse, C AF Ahualli, S. Delgado, A. V. Grosse, C. TI A simple model of the high-frequency dynamic mobility in concentrated suspensions SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE dynamic mobility; electroacoustic methods; hydrodynamic interactions; concentrated dispersions ID SPHERICAL COLLOIDAL PARTICLES; DILUTE SUSPENSION; DOUBLE-LAYER AB Because electroacoustic techniques are gaining interest in many fields of colloid science, a number of theories dealing with the phenomenon of electrophoresis in high-frequency (on the order of the MHz) electric fields have been developed. In the present work we propose a straightforward derivation of a simple formula for the dynamic mobility of colloidal particles in mildly concentrated systems. Starting with a simple expression for the electrophoretic mobility in dilute suspensions, given as a function of the zeta potential and of the dipole coefficient, we introduce successive corrections related to: (i) the back flow of fluid induced by the electrophoretic motion of the particles; (ii) the electrostatic interactions among particles; (iii) the difference between the macroscopic and the external electric fields; (iv) the difference between the zero-momentum and the laboratory reference frames. Considering furthermore that the frequency dependence of the dipole coefficient is due to the Maxwell-Wagner-O'Konski double-layer relaxation, we obtain a mobility expression that compares well with other (semi)analytical models and (in proper conditions) with numerical cell-model calculations. However, its main merit is that it allows to understand, to a large extent, the physical origin of the frequency and volume fraction dependences of the dynamic mobility. (c) 2006 Elsevier Inc. All rights reserved. C1 Univ Granada, Dept Appl Phys, E-18071 Granada, Spain. Univ Nacl Tucuman, Dept Phys, RA-4000 San Miguel De Tucuman, Argentina. RP Delgado, AV, Univ Granada, Dept Appl Phys, E-18071 Granada, Spain. EM adelgado@ugr.es NR 20 TC 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERFACE SCI JI J. Colloid Interface Sci. PD SEP 15 PY 2006 VL 301 IS 2 BP 660 EP 667 DI 10.1016/j.jcis.2006.05.042 PG 8 SC Chemistry, Physical GA 076DR UT ISI:000239937700043 ER PT J AU Guerra, PM Bradley, MM Perakakis, P Pinheiro, WM Vila, JC Lang, PJ AF Guerra, Pedro M. Bradley, Margaret M. Perakakis, Pandelis Pinheiro, Walter M. Vila, Jaime C. Lang, Peter J. TI Defensive reactions to natural human screams and aversive white noise (II) SO PSYCHOPHYSIOLOGY LA English DT Meeting Abstract DE cardiac defense; white noise; skin conductance C1 Univ Granada, E-18071 Granada, Spain. Univ Florida, Gainesville, FL 32611 USA. Fed Univ Rio De Janeiro, BR-21941 Rio De Janeiro, Brazil. NR 0 TC 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0048-5772 J9 PSYCHOPHYSIOLOGY JI Psychophysiology PY 2006 VL 43 SU Suppl. 1 BP S43 EP S43 PG 1 SC Psychology, Biological; Physiology; Psychology; Psychology, Experimental GA 076NQ UT ISI:000239965400199 ER PT J AU Mata, JL Rodriguez, S Jesus, MIVD Faria, AJP Vila, JC AF Mata, Jose L. Rodriguez, Sonia Viedma-del Jesus, Maria I. Faria Junior, Aydamari J. P. Vila, Jaime C. TI Modulation of cardiac defense by affective sounds SO PSYCHOPHYSIOLOGY LA English DT Meeting Abstract DE cardiac defense response; affective stimuli; emotion C1 Univ Granada, Granada, Spain. Univ Fed Fluminense, Niteroi, RJ, Brazil. NR 0 TC 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0048-5772 J9 PSYCHOPHYSIOLOGY JI Psychophysiology PY 2006 VL 43 SU Suppl. 1 BP S63 EP S63 PG 1 SC Psychology, Biological; Physiology; Psychology; Psychology, Experimental GA 076NQ UT ISI:000239965400291 ER PT J AU De la vega Elena, DA Oyonarte, S Nogues, N Blanzaco, PD Theiller, E Raillon, MA Chialina, S Solis, E Fernandez Montoya, A Crespo Ferrer, V Campos Munoz, A Muniz-Diaz, E AF De la vega Elena, D. A. Oyonarte, S. Dr. Nogues, N. dr. Blanzaco, P. D. prof. Theiller, E. dr. Raillon, M. A. dr. Chialina, S. dr. Solis, E. prof. Fernandez Montoya, A. dr. Crespo Ferrer, V. prof. Campos Munoz, A. prof. Muniz-Diaz, E. dr TI Characterization of human platelet antigens in the Argentinean population SO VOX SANGUINIS LA English DT Meeting Abstract C1 Hosp Italiano Garibaldi, Rosario, Santa Fe, Argentina. CRTS Granada Almeria, Granada, Spain. Banc Sang & Teixits, Barcelona, Spain. FBCB UNL, Santa Fe, Argentina. Dept Histol UGr, Granada, Spain. NR 0 TC 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0042-9007 J9 VOX SANG JI Vox Sang. PD AUG PY 2006 VL 91 SU Suppl. 3 BP 263 EP 264 PG 2 SC Hematology GA 077AE UT ISI:000239999300657 ER PT J AU Yao, WM Amsler, C Asner, D Barnett, RM Beringer, J Burchat, PR Carone, CD Caso, C Dahl, O D'Ambrosio, G De Gouvea, A Doser, M Eidelman, S Feng, JL Gherghetta, T Goodman, M Grab, C Groom, DE Gurtu, A Hagiwara, K Hayes, KG Hernandez-Rey, JJ Hikasa, K Jawahery, H Kolda, C Kwon, Y Mangano, ML Manohar, AV Masoni, A Miquel, R Monig, K Murayama, H Nakamura, K Navas, S Olive, KA Pape, L Patrignani, C Piepke, A Punzi, G Raffelt, G Smith, JG Tanabashi, M Terning, J Tornqvist, NA Trippe, TG Vogel, P Watari, T Wohl, CG Workman, RL Zyla, PA Armstrong, B Harper, G Lugovsky, VS Schaffner, PS Artuso, M Babu, KS Band, HR Barberio, E Battaglia, M Bichel, H Biebel, O Bloch, P Blucher, E Cahn, RN Casper, D Cattai, A Ceccucci, A Chakraborty, D Chivukula, RS Cowan, G Damour, T De Grand, T Desler, K Dobbs, MA Drees, M Edwards, A Edwards, DA Elvira, VD Erler, J Fetscher, W Fields, BD Foster, B Froidevaux, D Gaisser, TK Garren, L Gerber, HJ Gerbier, G Gibbons, L Gilman, FJ Giudice, GF Gritsan, AV Grunewald, M Haber, HE Hagmann, C Hinchliffe, I Hocker, A Igo-Kemenes, P Jackson, JD Johnson, KF Karlen, D Kayser, B Kirkby, D Klein, SR Kleinknecht, K Knowles, JG Kowalewski, RV Kreitz, P Krusche, B Kuyanov, YV Lahav, O Langacker, P Liddle, A Ligeti, Z Liss, TM Littenberg, L Liu, JC Lugovsky, KS Lugovsky, SB Mannel, T Marciano, WJ Martin, AD Milstead, D Narain, M Nason, P Nir, Y Peacock, JA Prell, SA Quadt, A Raby, S Ratcliff, BN Razuvaev, EA Renk, B Richardson, PR Roesler, S Rolandi, G Roman, MT Rosenberg, LJ Sachrajda, CT Sakai, Y Sarkar, S Schmitt, M Schneider, O Scott, D Sjostrand, T Smoot, GF Sokolsky, P Spanier, S Spieler, H Stahl, A Staney, T Streitmatter, RE Sumiyoshi, T Tkachenko, NP Trilling, GH Valencia, G van Bibber, K Vincter, MG Ward, DR Webber, BR Wells, JD Whalley, M Wolfenstein, L Womersley, J Woody, CL Yamamoto, A Zenin, OV Zhang, J Zhu, RY AF Yao, W-M Amsler, C. Asner, D. Barnett, R. M. Beringer, J. Burchat, P. R. Carone, C. D. Caso, C. Dahl, O. D'Ambrosio, G. De Gouvea, A. Doser, M. Eidelman, S. Feng, J. L. Gherghetta, T. Goodman, M. Grab, C. Groom, D. E. Gurtu, A. Hagiwara, K. Hayes, K. G. Hernandez-Rey, J. J. Hikasa, K. Jawahery, H. Kolda, C. Kwon, Y. Mangano, M. L. Manohar, A. V. Masoni, A. Miquel, R. Moenig, K. Murayama, H. Nakamura, K. Navas, S. Olive, K. A. Pape, L. Patrignani, C. Piepke, A. Punzi, G. Raffelt, G. Smith, J. G. Tanabashi, M. Terning, J. Toernqvist, N. A. Trippe, T. G. Vogel, P. Watari, T. Wohl, C. G. Workman, R. L. Zyla, P. A. Armstrong, B. Harper, G. Lugovsky, V. S. Schaffner, P. S. Artuso, M. Babu, K. S. Band, H. R. Barberio, E. Battaglia, M. Bichel, H. Biebel, O. Bloch, P. Blucher, E. Cahn, R. N. Casper, D. Cattai, A. Ceccicco, A. Chakraborty, D. Chivukula, R. S. Cowan, G. Damour, T. De Grand, T. Desler, K. Dobbs, M. A. Drees, M. Edwards, A. Edwards, D. A. Elvira, V. D. Erler, J. Fetscher, W. Fields, B. D. Foster, B. Froidevaux, D. Gaisser, T. K. Garren, L. Gerber, H. J. Gerbier, G. Gibbons, L. Gilman, F. J. Giudice, G. F. Gritsan, A. V. Grunewald, M. Haber, H. E. Hagmann, C. Hinchliffe, I. Hocker, A. Igo-Kemenes, P. Jackson, J. D. Johnson, K. F. Karlen, D. Kayser, B. Kirkby, D. Klein, S. R. Kleinknecht, K. Knowles, J. G. Kowalewski, R. V. Kreitz, P. Krusche, B. Kuyanov, Y. V. Lahav, O. Langacker, P. Liddle, A. Ligeti, Z. Liss, T. M. Littenberg, L. Liu, J. C. Lugovsky, K. S. Lugovsky, S. B. Mannel, T. Marciano, W. J. Martin, A. D. Milstead, D. Narain, M. Nason, P. Nir, Y. Peacock, J. A. Prell, S. A. Quadt, A. Raby, S. Ratcliff, B. N. Razuvaev, E. A. Renk, B. Richardson, P. R. Roesler, S. Rolandi, G. Roman, M. T. Rosenberg, L. J. Sachrajda, C. T. Salao, Y. Sarkar, S. Schmitt, M. Schneider, O. Scott, D. Sjostrand, T. Smoot, G. F. Sokolsky, P. Spanier, S. Spieler, H. Stahl, A. Staney, T. Streitmatter, R. E. Sumiyoshi, T. Tkachenko, N. P. Trilling, G. H. Valencia, G. van Bibber, K. Vincter, M. G. Ward, D. R. Webber, B. R. Wells, J. D. Whalley, M. Wolfenstein, L. Womersley, J. Woody, C. L. Yamamoto, A. Zenin, O. V. Zhang, J. Zhu, R. Y. CA Particle Data Grp TI Review of particle physics SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article AB This biennial Review summarizes much of particle physics. Using data from previous editions, plus 2633 new measurements from 689 papers, we list, evaluate, and average measured properties of guage bosons, leptons, quarks, mesons, and baryons. We also summarize searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as the Standard Model, particle detectors, probability, and statistics. among the 110 reviews are many that are new or heavily revised including those on CKM quark-mixing, V-ud & V-us, V-cb & V-ub, top quark, muon anomalous magnetic moment, extra dimensions, particle detectors, cosmic background radiation, dark matter, cosmological parameters, and big bang cosmology. C1 Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA. Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland. Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada. Stanford Univ, Dept Phys, Stanford, CA 94305 USA. Coll William & Mary, Dept Phys, Nucl & Particle Theory Grp, Williamsburg, VA 23187 USA. Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. Univ Genoa, Ist Nazl Fis Nucl, I-16146 Genoa, Italy. Univ Naples Federico II, Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy. Univ Naples Federico II, Dipartimento Sci Fis, Sez Napoli, I-80126 Naples, Italy. Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland. Budker Inst Nucl Phys, RU-630090 Novosibirsk, Russia. Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA. Argonne Natl Lab, Argonne, IL 60439 USA. ETH, Inst Particle Phys, CH-8093 Zurich, Switzerland. Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India. High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan. Hillsdale Coll, Dept Phys, Hillsdale, MI 49242 USA. Univ Valencia, Inst Fis Corpuscular, CSIC, E-46071 Valencia, Spain. Tohoku Univ, Dept Phys, Aoba Ku, Sendai, Miyagi 9808578, Japan. Univ Maryland, Dept Phys & Astron, College Pk, MD 20742 USA. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Yonsei Univ, Dept Phys, Seoul 120749, South Korea. Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. Cittadella Univ Monserrato, Ist Nazl Fis Nucl, Sez Cagliari, I-09042 Moserrato, CA, Italy. DESY, D-15735 Zeuthen, Germany. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain. Univ Granada, CAFPE, E-18071 Granada, Spain. Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA. Univ Pisa, Ist Nazl Fis Nucl, I-56127 Pisa, Italy. Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy. Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst Phys, D-80805 Munich, Germany. Univ Colorado, Dept Phys, Boulder, CO 80309 USA. Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. Univ Helsinki, Dept Phys Sci, FIN-00014 Helsinki, Finland. CALTECH, Kellogg Radiat Lab 106 38, Pasadena, CA 91125 USA. George Washington Univ, Dept Phys, Ashburn, VA 20147 USA. Inst High Energy Phys, COMPAS Grp, RU-142284 Protvino, Russia. Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA. Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA. Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. Univ Melbourne, Sch Phys, Parkville, Vic 3052, Australia. Univ Washington, Dept Astron, Seattle, WA 98195 USA. Univ Munich, Dept Phys, D-80799 Munich, Germany. Univ Chicago, Chicago, IL 60637 USA. No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Univ London Royal Holloway & Bedford New Coll, Dept Phys, Egham TW20 0EX, Surrey, England. Inst Hautes Etud Sci, F-91440 Bures Sur Yvette, France. DESY, D-22603 Hamburg, Germany. McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. Univ Bonn, Inst Phys, D-53115 Bonn, Germany. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico. Univ Illinois, Dept Astron, Urbana, IL 61801 USA. Univ Oxford, Dept Phys, Oxford OX1 3RH, England. Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA. CEA Saclay, F-91191 Gif Sur Yvette, France. Cornell Univ, Newman Lab Elementary Particle Phys, Ithaca, NY 14853 USA. Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. Johns Hopkins Univ, Baltimore, MD 21218 USA. Univ Coll Dublin, UCD Sch Phys, Dublin 4, Ireland. Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany. Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. Univ Victoria, Victoria, BC V8W 3P6, Canada. Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Univ Mainz, Inst Phys, D-55099 Mainz, Germany. Univ Edinburgh, Inst Astron, Royal Observ, Edinburgh EH9 3JZ, Midlothian, Scotland. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. Univ Basel, Inst Phys, CH-4056 Basel, Switzerland. Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England. Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA. Univ Sussex, Ctr Astron, Brighton BN1 9RH, E Sussex, England. Univ Illinois, Dept Phys, Urbana, IL 61801 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany. Kent State Univ, Dept Phys, Kent, OH 44242 USA. Univ Durham, Inst Particle Phys Phenomenol, Dept Phys, Durham DH1 3LE, England. AlbaNova Univ Ctr, Stockholm Univ, SE-10691 Stockholm, Sweden. Boston Univ, Dept Phys, Boston, MA 02215 USA. Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy. Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel. Iowa State Univ, Dept Phys, Ames, IA 50011 USA. Univ Rochester, Rochester, NY 14627 USA. Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. MIT, Dept Phys & Lab Nucl Sci, Cambridge, MA 02139 USA. Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England. Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3NP, England. Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland. Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada. Lund Univ, Dept Theoret Phys, S-22362 Lund, Sweden. Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA. Rhein Westfal TH Aachen, Physikzentrum, Inst Phys 3, D-52056 Aachen, Germany. NASA, Goddard Space Flight Ctr, Code 661, Greenbelt, MD 20771 USA. High Energy Accel Res Org, Tsukuba, Ibaraki 3050801, Japan. Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England. Univ Michigan, Michigan Ctr Theoret Phys, Dept Phys, Ann Arbor, MI 48109 USA. Rutherford Appleton Lab, CCLRC, Didcot OX11 0QX, Oxon, England. Chinese Acad Sci, IHEP, Beijing 100049, Peoples R China. CALTECH, Dept Phys 256 48, Pasadena, CA 91125 USA. RP Yao, WM, Lawrence Berkeley Natl Lab, Div Phys, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 4 TC 1748 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0954-3899 J9 J PHYS G-NUCL PARTICLE PHYS JI J. Phys. G-Nucl. Part. Phys. PD JUL PY 2006 VL 33 IS 1 SI Sp. Iss. SI BP 1 EP + DI 10.1088/0954-3899/33/1/001 PG 1211 SC Physics, Nuclear; Physics, Particles & Fields GA 077FC UT ISI:000240012400001 ER PT J AU Schulz, RB Rossignoli, P Correr, CJ Fernandez-Llimos, F AF Schulz, Renata B. Rossignoli, Paula Correr, Cassyano J. Fernandez-Llimos, Fernando TI Humanistic outcomes in hypertension research and practice SO JOURNAL OF HYPERTENSION LA English DT Letter ID MANAGEMENT C1 Unicenp, Sch Pharm, Curitiba, Brazil. Univ Fed Parana, Pharm Practice Res Grp, BR-80060000 Curitiba, Parana, Brazil. Univ Granada, Pharmaceut Care Res Grp, Granada, Spain. RP Fernandez-Llimos, F, Xeral Rubin 27, Redondela, Spain. EM f-llimos@cipf-es.org NR 4 TC 1 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0263-6352 J9 J HYPERTENSION JI J. Hypertens. PD AUG PY 2006 VL 24 IS 8 BP 1679 EP 1679 PG 1 SC Peripheral Vascular Disease GA 079XT UT ISI:000240211900030 ER PT J AU Diaz-Garcia, JA Jaimez, RG AF Diaz-Garcia, Jose A. Gutierrez Jaimez, Ramon TI Wishart and Pseudo-Wishart distributions under elliptical laws and related distributions in the shape theory context SO JOURNAL OF STATISTICAL PLANNING AND INFERENCE LA English DT Article DE Wishart distribution; Pseudo-Wishart distribution; Hausdorff measure; singular distribution; noncentral distribution; elliptical distribution; shape theory ID SINGULAR MULTIVARIATE BETA AB In this paper, we determine the density of a singular elliptically contoured matrix. From this, the study of Wishart and Pseudo-Wishart distributions, whether central or noncentral, whether singular or nonsingular, is extended to the case of elliptical models. Some elated distributions are studied in the context of shape theory. Particular attention is paid to singular size-and-shape and size-and-shape cone densities. (c) 2005 Elsevier B.V. All rights reserved. C1 Univ Autonoma Agraria Narro, Dept Stat & Computat, Saltillo 25315, Coahuila, Mexico. Univ Granada, Dept Stat & OR, Granada 18071, Spain. RP Diaz-Garcia, JA, Univ Autonoma Agraria Narro, Dept Stat & Computat, Saltillo 25315, Coahuila, Mexico. EM jadiaz@uaaan.mx rgjaimez@goliat.ugr.es NR 25 TC 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3758 J9 J STATIST PLAN INFER JI J. Stat. Plan. Infer. PD DEC 1 PY 2006 VL 136 IS 12 BP 4176 EP 4193 DI 10.1016/j.jspi.2005.08.045 PG 18 SC Statistics & Probability GA 080MF UT ISI:000240251200005 ER PT J AU Manrique-Poyato, MI Munoz-Pajares, AJ Loreto, V Lopez-Leon, MD Cabrero, J Camacho, JPM AF Manrique-Poyato, M. I. Munoz-Pajares, A. J. Loreto, V. Lopez-Leon, M. D. Cabrero, J. Camacho, J. P. M. TI Causes of B chromosome variant substitution in the grasshopper Eyprepocnemis plorans SO CHROMOSOME RESEARCH LA English DT Article DE B-chromosome; drive; E. plorans; fitness; neutralized; parasitic; substitution ID VIRULENCE; PARASITE; DRIVE AB We have analysed B chromosome frequency for three consecutive years, B transmission rate at population and individual levels, clutch size, egg fertility and embryo-adult viability in a natural population of the grasshopper Eyprepocnemis plorans containing two different B chromosome variants, i.e. B-2 and B-24, the second being derived from the first and having replaced it in nearby populations. From 2002 to 2003 the relative frequency of both variants changed, although the differences did not reach significance. A mother-offspring analysis showed no significant effect of any of the two B variants on clutch size, egg fertility or embryo-adult viability, but B-24 was more efficiently transmitted than B-2 through males from the 2002 season, which explains the observed frequency change. Controlled crosses, at individual level, showed significant drive through some females for B-24 but not for B-2, suggesting that this difference in transmission rate might also be important for the substitution process. The analysis of relative fitness for B-2 and B-24 carriers for all fitness components, as a whole, showed a significantly better performance of B-24-carrying individuals, suggesting that the cumulative effect of these slight differences might contribute to the replacement of B-2 by B-24. C1 Univ Granada, Dept Genet, Fac Ciencias, E-18071 Granada, Spain. Univ Fed Rural Pernambuca, Unidad Acad Garanhuns, Garanhuns, Brazil. RP Camacho, JPM, Univ Granada, Dept Genet, Fac Ciencias, E-18071 Granada, Spain. EM jpmcamac@ugr.es NR 14 TC 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0967-3849 J9 CHROMOSOME RES JI Chromosome Res. PD SEP PY 2006 VL 14 IS 6 BP 693 EP 700 DI 10.1007/s10577-006-1081-2 PG 8 SC Biochemistry & Molecular Biology; Genetics & Heredity GA 082PY UT ISI:000240400300011 ER PT J AU Diaz-Garcia, JA Gutierrez-Jaimez, R AF Diaz-Garcia, Jose A. Gutierrez-Jaimez, Ramon TI The distribution of the residual from a general elliptical multivariate linear model SO JOURNAL OF MULTIVARIATE ANALYSIS LA English DT Article DE residual; studentised residual; Pearson type II distribution; matrix-variate t distribution; elliptical distribution; singular distribution; matricvariate t distribution ID REGRESSION; WISHART AB Given a general multivariate linear model of full or less than full rank, we find the distributions of internally and externally studentised residuals, assuming normal and elliptical distributions. (c) 2005 Elsevier Inc. All rights reserved. C1 Univ Autonoma Agr Antonio Narro, Dept Stat & Computat, Saltillo, Coahuila, Mexico. Univ Granada, Dept Stat & OR, E-18071 Granada, Spain. RP Diaz-Garcia, JA, Univ Autonoma Agr Antonio Narro, Dept Stat & Computat, 25315 Buenavista, Saltillo, Coahuila, Mexico. EM jadiaz@uaaan.mx rgjaimez@goliat.ugr.es NR 20 TC 0 PU ELSEVIER INC PI SAN DIEGO PA 525 B STREET, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0047-259X J9 J MULTIVARIATE ANAL JI J. Multivar. Anal. PD SEP PY 2006 VL 97 IS 8 BP 1829 EP 1841 DI 10.1016/j.jmva.2005.07.004 PG 13 SC Statistics & Probability GA 085RV UT ISI:000240623000010 ER PT J AU Vila, J Vico, C Munoz, MA Guerra, P Mata, JL Rodriguez, S Delgado, LC Perakakis, P Faria, A Anllo-Vento, L AF Vila, J. Vico, C. Munoz, M. A. Guerra, P. Mata, J. L. Rodriguez, S. Delgado, L. C. Perakakis, P. Faria, Jr A. Anllo-Vento, L. TI Psychophysiology of positive emotions: Affective processing of loved faces SO JOURNAL OF PSYCHOPHYSIOLOGY LA English DT Meeting Abstract C1 Univ Granada, E-18071 Granada, Spain. Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil. NR 0 TC 0 PU HOGREFE & HUBER PUBLISHERS PI GOTTINGEN PA ROHNSWEG 25, D-37085 GOTTINGEN, GERMANY SN 0269-8803 J9 J PSYCHOPHYSIOL JI J. Psychophysiol. PY 2006 VL 20 IS 3 BP 226 EP 226 PG 1 SC Psychology, Biological; Neurosciences GA 087SI UT ISI:000240762200060 ER PT J AU Vila, J Viedma, M Kley, E Sanchez, MB Robles, H Perez, N Vera, MN Pegalajar, J Machado-Pinheiro, W Turpin, G Fernandez, MC AF Vila, J. Viedma, M. Kley, E. Sanchez, M. B. Robles, H. Perez, N. Vera, M. N. Pegalajar, J. Machado-Pinheiro, W. Turpin, G. Fernandez, M. C. TI Psychophysiology of anxiety disorders SO JOURNAL OF PSYCHOPHYSIOLOGY LA English DT Meeting Abstract C1 Univ Granada, E-18071 Granada, Spain. Univ Fed Fluminense, BR-24220000 Niteroi, RJ, Brazil. Univ Sheffield, Sheffield S10 2TN, S Yorkshire, England. NR 0 TC 0 PU HOGREFE & HUBER PUBLISHERS PI GOTTINGEN PA ROHNSWEG 25, D-37085 GOTTINGEN, GERMANY SN 0269-8803 J9 J PSYCHOPHYSIOL JI J. Psychophysiol. PY 2006 VL 20 IS 3 BP 231 EP 231 PG 1 SC Psychology, Biological; Neurosciences GA 087SI UT ISI:000240762200082 ER PT J AU David, I Volchan, E Alfradique, I Oliveira, L Pereira, M Vila, J Machado-Pinheiro, W AF David, I. Volchan, E. Alfradique, I. Oliveira, L. Pereira, M. Vila, J. Machado-Pinheiro, W. TI Effect of acute alcohol intoxication and training on the time-course of the Stroop task SO JOURNAL OF PSYCHOPHYSIOLOGY LA English DT Meeting Abstract C1 Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil. Univ Granada, Granada, Spain. NR 0 TC 0 PU HOGREFE & HUBER PUBLISHERS PI GOTTINGEN PA ROHNSWEG 25, D-37085 GOTTINGEN, GERMANY SN 0269-8803 J9 J PSYCHOPHYSIOL JI J. Psychophysiol. PY 2006 VL 20 IS 3 BP 233 EP 233 PG 1 SC Psychology, Biological; Neurosciences GA 087SI UT ISI:000240762200092 ER PT J AU Faria-Jr, A Alfradique, I Oliveira, L Pereira, M Munoz, MA Vila, J Volchan, E Machado-Pinheiro, W AF Faria-Jr, A. Alfradique, I. Oliveira, L. Pereira, M. Munoz, M. A. Vila, J. Volchan, E. Machado-Pinheiro, W. TI Automatic and voluntary processing by the nervous system: Time course of emotional influence on attentional tasks SO JOURNAL OF PSYCHOPHYSIOLOGY LA English DT Meeting Abstract C1 Univ Fed Fluminense, BR-24220000 Niteroi, RJ, Brazil. Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil. Univ Granada, E-18071 Granada, Spain. NR 0 TC 0 PU HOGREFE & HUBER PUBLISHERS PI GOTTINGEN PA ROHNSWEG 25, D-37085 GOTTINGEN, GERMANY SN 0269-8803 J9 J PSYCHOPHYSIOL JI J. Psychophysiol. PY 2006 VL 20 IS 3 BP 235 EP 235 PG 1 SC Psychology, Biological; Neurosciences GA 087SI UT ISI:000240762200101 ER PT J AU Guerra, G Mendonca, AC Fischer, N Vieira, A Barros, E Figueira, I Vila, J Volchan, E AF Guerra, G. Mendonca, A. C. Fischer, N. Vieira, A. Barros, E. Figueira, I. Vila, J. Volchan, E. TI Positive priming and high vagal tone improve recovery from psychological stress SO JOURNAL OF PSYCHOPHYSIOLOGY LA English DT Meeting Abstract C1 Univ Fed Rio de Janeiro, BR-21941 Rio De Janeiro, Brazil. Univ Granada, Granada, Spain. NR 0 TC 0 PU HOGREFE & HUBER PUBLISHERS PI GOTTINGEN PA ROHNSWEG 25, D-37085 GOTTINGEN, GERMANY SN 0269-8803 J9 J PSYCHOPHYSIOL JI J. Psychophysiol. PY 2006 VL 20 IS 3 BP 237 EP 238 PG 2 SC Psychology, Biological; Neurosciences GA 087SI UT ISI:000240762200110 ER PT J AU Mata, JL Machado-Pinheiro, W Faria, A Perez, N Vila, J AF Mata, J. L. Machado-Pinheiro, W. Faria, A., Jr. Perez, N. Vila, J. TI The effect of gender on heart rate in an affective picture viewing paradigm SO JOURNAL OF PSYCHOPHYSIOLOGY LA English DT Meeting Abstract C1 Univ Granada, E-18071 Granada, Spain. Univ Fed Fluminense, BR-24220000 Niteroi, RJ, Brazil. NR 0 TC 0 PU HOGREFE & HUBER PUBLISHERS PI GOTTINGEN PA ROHNSWEG 25, D-37085 GOTTINGEN, GERMANY SN 0269-8803 J9 J PSYCHOPHYSIOL JI J. Psychophysiol. PY 2006 VL 20 IS 3 BP 241 EP 241 PG 1 SC Psychology, Biological; Neurosciences GA 087SI UT ISI:000240762200124 ER PT J AU Mocaiber, I Oliveira, L Garcia-Pereira, M Machado-Pinheiro, W Figueira, I Vila, J Volchan, E AF Mocaiber, I Oliveira, L. Garcia-Pereira, M. Machado-Pinheiro, W. Figueira, I. Vila, J. Volchan, E. TI High vagal tone associated with better emotion regulation in response to aversive pictures presented as real or fictional SO JOURNAL OF PSYCHOPHYSIOLOGY LA English DT Meeting Abstract C1 Univ Fed Rio de Janeiro, BR-21941 Rio De Janeiro, Brazil. Univ Fed Fluminense, BR-24220000 Niteroi, RJ, Brazil. Univ Granada, E-18071 Granada, Spain. NR 0 TC 0 PU HOGREFE & HUBER PUBLISHERS PI GOTTINGEN PA ROHNSWEG 25, D-37085 GOTTINGEN, GERMANY SN 0269-8803 J9 J PSYCHOPHYSIOL JI J. Psychophysiol. PY 2006 VL 20 IS 3 BP 241 EP 242 PG 2 SC Psychology, Biological; Neurosciences GA 087SI UT ISI:000240762200126 ER PT J AU Martinez-Espin, E Martinez-Gonzalez, LJ Fernandez-Rosado, F Entrala, C Alvarez, JC Lorente, JA Budowle, B de Monroy, MO AF Martinez-Espin, Esther Martinez-Gonzalez, Luis J. Fernandez-Rosado, Francisco Entrala, Carmen Alvarez, J. Carlos Lorente, Jose A. Budowle, Bruce de Monroy, Myriam Ovalle TI Guatemala mestizo population data on 15 STR loci (Identifiler (R) kit) SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE forensic science; DNA typing; population genetics; Guatemala; identifiler((R)) kit; D3S1358; TH01; D21S11; D18S51; D2S1338; D5S818; D13S317; D7S820; D16S539; CSF1PO; D19S433; vWA; D8S1179; TPOX; FGA ID GENETIC-VARIATION C1 Univ Granada, Fac Med, Dept Legal Med, Lab Genet Identificat, Granada 18012, Spain. Ciencias Salud BIC, PT, R&D Div, LORGEN GP, Granada 18100, Spain. Fed Bur Invest Acad, Lab Div, Quantico, VA 22135 USA. Minist Publ Guatemala, Dept Tecn Cient, Guatemala City, Guatemala. RP Lorente, JA, Univ Granada, Fac Med, Dept Legal Med, Lab Genet Identificat, Granada 18012, Spain. EM jlorente@ugr.es NR 5 TC 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD SEP PY 2006 VL 51 IS 5 BP 1216 EP 1218 DI 10.1111/j.1556-4029.2006.00249.x PG 3 SC Medicine, Legal GA 087WO UT ISI:000240773700047 ER PT J AU Nunes, TG Garcia, FCP Osorio, R Carvalho, R Toledano, M AF Nunes, T. G. Garcia, F. C. P. Osorio, R. Carvalho, R. Toledano, M. TI Polymerization efficacy of simplified adhesive systems studied by NMR and MRI techniques SO DENTAL MATERIALS LA English DT Article DE dentin adhesive systems; self-etching; photo-polymerization; HEMA; solvent evaporation; nuclear magnetic resonance; stray-field magnetic resonance imaging ID COMMERCIAL DENTAL RESIN; SELF-ETCHING PRIMER; IN-ONE ADHESIVE; MULTIFUNCTIONAL MONOMERS; WATER; PHOTOPOLYMERIZATION; BONDS; DURABILITY; COMPOSITES; KINETICS AB Objective. To ascertain the efficacy of polymerization of self-etching dental adhesives in different solvent evaporation conditions. Material and methods. Four self-etching adhesive systems were studied. Two of them are classified as mild two-step self-etching adhesives (Clearfil SE Bond, Protect Bond) and the other two are strong one-step systems (Xeno III, ADP - Prompt-L-Pop). The influence of temperature and duration of the air-drying period on photo-polymerization was followed by: gravimetry, H-1 solid-state NMR spectroscopy and stray-field MRI. The evolution of proton magnetization with irradiation time was recorded and correlated with volumetric polymerization shrinkage and extent of reaction; evaporation and hardening effects were identified. Results. Main variables determining water-solvent evaporation of the tested adhesives are: (1) water/HEMA relative concentration, (2) presence of photoinitiator compounds in the primer (SEB) and (3) presence of ethanol (XENO). SEB shows the highest extent of photopolymerization of the tested adhesives. The lowest volumetric contraction was obtained for APLP and XENO and the attempt to remove the solvents did not increase the extent of polymerization significantly. Conclusions. Temperature increase following photo -polymerization reaction is dominant towards the effect of the drying step for solvent evaporation in self-etching systems. Attempts to remove the solvents did not increase the extent of polymerization, so other problems are impairing the polymerization of one-step adhesives. Clinical significance. The use of tested one-step adhesives is discouraged as the attained low extent of polymerization may lead to low bond strength, high susceptibility to degradation and also will favor a continuing etching effect on the underlying dentin. (C) 2005 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved. C1 IST, Dept Mat Engn, P-1049001 Lisbon, Portugal. Univ Sao Paulo, Bauru Sch Dent, BR-05508 Sao Paulo, Brazil. Univ Granada, Dept Estomatol, E-18071 Granada, Spain. RP Nunes, TG, IST, Dept Mat Engn, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal. EM Teresa.Nunes@ist.utl.pt NR 32 TC 10 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0109-5641 J9 DENT MATER JI Dent. Mater. PD OCT PY 2006 VL 22 IS 10 BP 963 EP 972 DI 10.1016/j.dental.2005.10.008 PG 10 SC Dentistry, Oral Surgery & Medicine; Materials Science, Biomaterials GA 092TK UT ISI:000241120000011 ER PT J AU Reboulet, S Hoedemaeker, PJ Aguirre-Urreta, MB Alsen, P Atrops, F Baraboshkin, EY Company, M Delanoy, G Dutour, Y Klein, J Latil, JL Lukeneder, A Mitta, V Mourgues, FA Ploch, I Raisossadat, N Ropolo, P Sandoval, J Tavera, JM Vasicek, Z Vermeulen, J Arnaud, H Granier, B Premoli-Silva, I AF Reboulet, Stephane Hoedemaeker, Philip J. Aguirre-Urreta, Maria B. Alsen, Peter Atrops, Francois Baraboshkin, Evgenij Y. Company, Miguel Delanoy, Gerard Dutour, Yves Klein, Jaap Latil, Jean-Louis Lukeneder, Alexander Mitta, Vasily Mourgues, Francisco A. Ploch, Izabela Raisossadat, Naser Ropolo, Pierre Sandoval, Jose Tavera, Jose M. Vasicek, Zdenek Vermeulen, Jean Arnaud, Hubert Granier, Bruno Premoli-Silva, Isabella TI Report on the 2nd international meeting of the IUGS lower Cretaceous ammonite working group, the "Kilian Group" (Neuchatel, Switzerland, 8 September 2005) SO CRETACEOUS RESEARCH LA English DT Article C1 Univ Lyon 1, UFR Geosci, UMR 5125, CNRS,PEPS, F-69622 Villeurbanne, France. Natl Museum Nat Hist, NL-2300 RA Leiden, Netherlands. Univ Buenos Aires, Dept Ciencias Geol, RA-1428 Buenos Aires, DF, Argentina. Univ Copenhagen, Inst Geol, DK-1350 Copenhagen K, Denmark. Moscow MV Lomonosov State Univ, Geol Fac, Moscow 119992, Russia. Univ Granada, Fac Ciencias, Dept Estratig & Paleontol, Granada 18002, Spain. Univ Nice Sophia Antipolis, Dept Sci Terre, Fac Sci, F-06108 Nice 2, France. Museum Nat Hist, Geol Paleontol Dept, A-1010 Vienna, Austria. RAS, Inst Paleontol, Moscow 117997, Russia. Observ Midi Pyrenees, IRD, LMTG, F-31400 Toulouse, France. Geol Museum, Polish Geol Inst, PL-00975 Warsaw, Poland. Birjand Univ, Fac Sci, Dept Geol, Birjand, Iran. Univ Aix Marseille 1, Ctr Sedimentol Paleontol, F-13331 Marseille 3, France. Tech Univ Ostrava, VSB, Inst Geol Engn, CZ-70833 Ostrava, Czech Republic. UMR 5025, LGCA, F-38041 Grenoble, France. Univ Bretagne Occidentale, UMR Paleontol 6538, UFR Sci & Tech, FR-29238 Brest, France. Dipartimento Sci Terra A Desio, I-20133 Milan, Italy. RP Reboulet, S, Univ Lyon 1, UFR Geosci, UMR 5125, CNRS,PEPS, Batiment Geode,2 Rue Raphael Dubois, F-69622 Villeurbanne, France. EM stephane.reboulet@univ-lyon1.fr NR 20 TC 5 PU ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0195-6671 J9 CRETACEOUS RES JI Cretac. Res. PD OCT PY 2006 VL 27 IS 5 BP 712 EP 715 DI 10.1016/j.cretres.2006.03.006 PG 4 SC Geology; Paleontology GA 095AX UT ISI:000241281700010 ER PT J AU Vilchez, JL Prieto, A Araujo, L Navalon, A AF Vilchez, Jose Luis Prieto, Avismelsi Araujo, Lilia Navalon, Alberto TI Application of isotope dilution to the determination of anthracene in environmental samples by headspace solid-phase microextraction and gas chromatography-mass spectrometry SO MICROCHIMICA ACTA LA English DT Article DE GC-MS; isotope dilution; solid-phase microextraction; anthracene ID POLYCYCLIC AROMATIC-HYDROCARBONS; LIQUID-CHROMATOGRAPHY; SPME AB A method using headspace solid-phase microextraction (HS-SPME) followed by gas chromatography-mass spectrometry with selected ion monitoring (GC-MS, SIM) has been developed for the determination of trace amounts of anthracene in sea water, wastewater, honey and saliva samples. Anthracene was extracted on to a fused-silica fibre coated with 85 mu m polyacrylate (PA). Quantification of anthracene was carried out by isotope dilution mass spectrometry. The detection limit and the quantification limit found were 0.02 and 0.06 ng mL(-1), respectively. The method was validated by analysis of spiked matrix samples and used to investigate the presence of anthracene above the stated detection limit in sea water, wastewater, honey and saliva samples. C1 Univ Granada, Fac Sci, Dept Analyt Chem, Res Grp Analyt Chem & Life Sci, E-18071 Granada, Spain. Univ Zulia, Fac Engn, Lab Analyt Chem & Electrochem, Maracaibo, Venezuela. RP Navalon, A, Univ Granada, Fac Sci, Dept Analyt Chem, Res Grp Analyt Chem & Life Sci, Avda Fuentenueva S-N, E-18071 Granada, Spain. EM anavalon@ugr.es NR 18 TC 2 PU SPRINGER WIEN PI WIEN PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA SN 0026-3672 J9 MICROCHIM ACTA JI Microchim. Acta PD OCT PY 2006 VL 155 IS 3-4 BP 435 EP 439 DI 10.1007/s00604-006-0577-y PG 5 SC Chemistry, Analytical GA 096DC UT ISI:000241356200014 ER PT J AU Silva, R Mendoza, E Losada, MA AF Silva, R. Mendoza, E. Losada, M. A. TI Modelling linear wave transformation induced by dissipative structures - Regular waves SO OCEAN ENGINEERING LA English DT Article DE wave in porous media; quad-tree technique; mild-slope equation; modified mild-slope equation; finite differences; refraction-diffraction ID MILD-SLOPE EQUATION; SUBMERGED BREAKWATERS; SURFACE-WAVES; HARBOR AB A numerical model of the modified time-independent mild-slope equation for linear waves over a rapidly changing finite porous bed is presented. in this solution the reflection and phase coefficient shift are solved implicitly. Boundaries are assumed to be open, partially reflecting, or fully absorbing through the second-order parabolic approximation. Discretisation of the governing equation and boundary conditions is by means of a second-order accurate central difference scheme. The resulting sparse-banded matrix is solved using an inexpensive banded solver with Gaussian elimination. The model has been validated and the numerical predictions are in excellent agreement with analytical solutions. (C) 2006 Elsevier Ltd. All rights reserved. C1 Univ Nacl Autonoma Mexico, Inst Ingn, Mexico City 04510, DF, Mexico. Univ Granada, CREAMA, Grp Puertos & Costas, Granada 18006, Spain. RP Silva, R, Univ Nacl Autonoma Mexico, Inst Ingn, Mexico City 04510, DF, Mexico. EM RSilvaC@iingen.unam.mx NR 28 TC 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0029-8018 J9 OCEAN ENG JI Ocean Eng. PD NOV PY 2006 VL 33 IS 16 BP 2150 EP 2173 DI 10.1016/j.oceaneng.2005.11.007 PG 24 SC Engineering, Civil; Engineering, Ocean; Oceanography; Water Resources GA 098ND UT ISI:000241528600005 ER PT J AU Silva, R Losada, MA Salles, P AF Silva, R. Losada, M. A. Salles, P. TI Modelling linear wave transformation induced by dissipative structures - Random waves SO OCEAN ENGINEERING LA English DT Article DE random waves; wave in porous media; quad-tree technique; mild-slope equation; modified mild-slope equation; finite differences; refraction-diffraction ID MILD-SLOPE EQUATION; SUBMERGED BREAKWATERS; SPECTRUM AB The relevant theory is presented and numerical results are compared with the analytical solution for the interaction of non-breaking waves with an array of vertical porous circular cylinders on a horizontal bed. The extension to the cases of unidirectional and multidirectional waves is obtained by means of a transfer function. The influence of the mechanical properties of porous structures and wave irregularity on wave transformation is analysed. Results for unidirectional and multidirectional wave spectra are compared to those obtained for regular waves, The model presented reproduces well the analytical results and provides a tool for analysing several engineering problems. (C) 2006 Elsevier Ltd. All rights reserved. C1 Univ Nacl Autonoma Mexico, Inst Ingn, Mexico City 04510, DF, Mexico. Univ Granada, CEAMA, Grp Puertos & Costas, Granada 18006, Spain. RP Silva, R, Univ Nacl Autonoma Mexico, Inst Ingn, Mexico City 04510, DF, Mexico. EM rsilvac@iingen.unam.mx NR 28 TC 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0029-8018 J9 OCEAN ENG JI Ocean Eng. PD NOV PY 2006 VL 33 IS 16 BP 2174 EP 2194 DI 10.1016/j.oceaneng.2005.11.008 PG 21 SC Engineering, Civil; Engineering, Ocean; Oceanography; Water Resources GA 098ND UT ISI:000241528600006 ER PT J AU Desimone, MF De Marzi, MC Copello, GJ Fernandez, MM Pieckenstain, FL Malchiodi, EL Diaz, LE AF Desimone, M. F. De Marzi, M. C. Copello, G. J. Fernandez, M. M. Pieckenstain, F. L. Malchiodi, E. L. Diaz, L. E. TI Production of recombinant proteins by sol-gel immobilized Escherichia coli SO ENZYME AND MICROBIAL TECHNOLOGY LA English DT Article DE Escherichia coli; immobilization; preservation; silicon oxide matrix; sol-gel ID SACCHAROMYCES-CEREVISIAE; CRYSTAL-STRUCTURE; SUPERANTIGEN; ENCAPSULATION; BACTERIA AB The aim of this work was to study the functionality and quantitative level of recombinant protein produced from bacteria immobilized and preserved in sol-gel matrices. Matrices prepared from two precursors, silicon dioxide and tetraethoxysilane, were studied. In previous works we analyzed the number of viable cells and level of recombinant protein production from cultures started with immobilized Escherichia coli, stored in sealed tubes at 4 and 20 degrees C. We observed that the amount of bacteria in silicon dioxide derived matrix conserved in the same order of magnitude as before immobilization, during 2 months, but those in an alkoxide derived matrix decrease until no viable cells were detected at both 4 and 20 degrees C after 42 days. In this work, immobilized bacteria were tided as culture starter to produce recombinant proteins with a yield comparable with glycerol stocks. T-cell proliferation and gel filtration assays suggest that SAgs produced from cultures started with sol-gel immobilized bacteria retain their biological activity. Affinity assays using a resonant biosensor showed that Streptococcal Superantigen (SSA) has affinity for human V beta 5.2 produced from sol-gel immobilized bacteria with K-D = 7.5 mu M. These results contribute to the development of methods for microbial cells preservation under field conditions. (c) 2006 Elsevier Inc. All rights reserved. C1 Univ Buenos Aires, Fac Farm & Bioquim, Catedra Quim Anlit Instrumental, RA-1113 Buenos Aires, DF, Argentina. Univ Buenos Aires, Fac Farm & Bioquim, Catedra Inmunol, IDEHU CONICET, RA-1113 Buenos Aires, DF, Argentina. Univ Granada, Fac Ciencias, Dept Fisiol Vegetal, Lab Fijac Simbiot Nitrogeno, E-18071 Granada, Spain. RP Diaz, LE, Univ Buenos Aires, Fac Farm & Bioquim, Catedra Quim Anlit Instrumental, Junin 956 Piso 3, RA-1113 Buenos Aires, DF, Argentina. EM ldiaz@ffyb.uba.ar NR 14 TC 2 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0141-0229 J9 ENZYME MICROB TECHNOL JI Enzyme Microb. Technol. PD DEC 6 PY 2006 VL 40 IS 1 SI Sp. Iss. SI BP 168 EP 171 DI 10.1016/j.enzmictec.2005.11.052 PG 4 SC Biotechnology & Applied Microbiology GA 101AS UT ISI:000241711900029 ER PT S AU Donoso, S Marin, N Vila, MA AF Donoso, Sergio Marin, Nicolas Vila, M. Amparo TI Fuzzy regression with quadratic programming: An application to financial data SO INTELLIGENT DATA ENGINEERING AND AUTOMATED LEARNING - IDEAL 2006, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article ID LINEAR-REGRESSION; MODEL AB The fuzzy approach to regression has been traditionally considered as a problem of linear programming. In this work, we introduce a variety of models founded on quadratic programming together with a set of indices useful to check the quality of the obtained results. In order to test the validness of our proposal, we have done an empirical study and we have applied the models in a case with financial data: the Chilean COPEC Company stock price. C1 UTEM, Santiago, Chile. Univ Granada, Dept Comp Sci & AI, E-18071 Granada, Spain. RP Donoso, S, UTEM, Santiago, Chile. EM sdonosos@vtr.net nicm@decsai.ugr.es vila@decsai.ugr.es NR 13 TC 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 J9 LECT NOTE COMPUT SCI PY 2006 VL 4224 BP 1304 EP 1311 PG 8 SC Computer Science, Theory & Methods GA BFG81 UT ISI:000241790900155 ER PT J AU Cortes, MJ Armstrong, V Barrero, AF Bandoni, AE Priestap, A Fournet, A Prina, E AF Cortes, Manuel J. Armstrong, Veronica Barrero, Alejandro F. Bandoni, Arnaldo E. Priestap, A. Fournet, Alain Prina, Eric TI Configuration and leishmanicidal activity of (-)-argentilactone epoxides SO NATURAL PRODUCT RESEARCH LA English DT Article DE argentilactone; epoxides; urea hydrogen peroxide; leishmanicidal activity ID ARISTOLOCHIA-ARGENTINA; ARGENTILACTONE AB Epoxidation of argentilactone (1) with m-chloroperbenzoic acid gave a diasteromeric mixture of 2 and 3 in a ratio 1.8: 1, with total yield 60%. The configuration of 7,8-oxirane ring for both diasteromers was determined by NMR analysis. Reaction of 1 with urea hydrogen peroxide gave the 3,4-epoxide (4) in 65% yield. The in vitro activity of 2, 3, 4 and argentilactone against Leishmania amazonensis was tested, only epoxides (2) and (3) showed leishmanicidal effect. C1 Pontificia Univ Catolica Chile, Fac Quim, Dept Quim Organ, Santiago 22, Chile. Univ Granada, Fac Ciencias, Dept Quim Organ, E-18071 Granada, Spain. Univ Buenos Aires, Fac Farm & Bioquim, RA-1113 Buenos Aires, DF, Argentina. Inst Rech Dev, F-75480 Paris, France. RP Cortes, MJ, Pontificia Univ Catolica Chile, Fac Quim, Dept Quim Organ, Casilla 306, Santiago 22, Chile. EM mcortesm@uc.cl NR 11 TC 0 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6419 J9 NAT PROD RES JI Nat. Prod. Res. PD SEP PY 2006 VL 20 IS 11 BP 1008 EP 1014 DI 10.1080/14786410600921391 PG 7 SC Chemistry, Applied; Chemistry, Medicinal GA 103CI UT ISI:000241862900005 ER PT J AU Rodriguez-Navarro, AB CabraldeMelo, C Batista, N Morimoto, N Alvarez-Lloret, P Ortega-Huertas, M Fuenzalida, VM Arias, JI Wiff, JP Arias, JL AF Rodriguez-Navarro, Alejandro B. CabraldeMelo, Christiane Batista, Nelson Morimoto, Nilton Alvarez-Lloret, Pedro Ortega-Huertas, Miguel Fuenzalida, Victor M. Arias, Jose I. Wiff, Juan P. Arias, Jose L. TI Microstructure and crystallographic-texture of giant barnacle (Austromegabalanus psittacus) shell SO JOURNAL OF STRUCTURAL BIOLOGY LA English DT Article DE biomineralization; calcite; organic matrix; pole figures; XRD; X-ray diffraction; crystallite size ID EXTRACELLULAR-MATRIX MOLECULES; BIOLOGICAL MINERALIZATION; EGGSHELL FORMATION; NACRE; NUCLEATION; ARAGONITE; GROWTH; MODEL AB Barnacle shell is a very complex and strong composite bioceramic composed of different structural units which consist of calcite 15 microcrystals of very uniform size. In the study reported herein, the microstructural organization of these units has been examinated in detail with optical and scanning electron microscopy, and X-ray diffraction techniques. These analyses showed that the external part of the shell has a massive microstructure consisting of randomly oriented crystals. Toward the interior, the shell became organized in mineral layers separated by thin organic sheets. Each of these mineral layers has a massive microstructure constituted by highly oriented calcite microcrystals with their c-axes aligned [(001) fibre texture] perpendicular to the organic sheets and the shell surface. Interestingly, in another structural unit, the shell shield, the orientation of the c-axis calcite crystals shifts from being perpendicular to being parallel to the shell surface across its thickness. This study provides evidence that the organic matrix is responsible for the organization of the shell mineral and exterts strong a strict control on the polymorphic type, size and orientation of shell-forming crystals. (c) 2006 Elsevier Inc. All rights reserved. C1 Univ Granada, Dept Mineral & Petrol, E-18071 Granada, Spain. Univ Sao Paulo, Escola Politecn, LSI, BR-05508 Sao Paulo, Brazil. IPEN, Ctr Ciencia & Tecnol Mat, Sao Paulo, Brazil. Univ Chile, Fac Ciencias Fis & Matemat & Ciencias Vet & Pecua, Santiago, Chile. CIMAT, Santiago, Chile. RP Rodriguez-Navarro, AB, Univ Granada, Dept Mineral & Petrol, E-18071 Granada, Spain. EM anava@ugr.es NR 32 TC 3 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1047-8477 J9 J STRUCT BIOL JI J. Struct. Biol. PD NOV PY 2006 VL 156 IS 2 BP 355 EP 362 DI 10.1016/j.jsb.2006.04.009 PG 8 SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA 105CY UT ISI:000242008100013 ER PT J AU Zapata-Montoya, JE Guadix, EM Guadix, A AF Zapata-Montoya, Jose E. Guadix, Emilia M. Guadix, Antonio TI Long-term effects of chemical cleaning in the performance of ultrafiltration ceramic membranes SO DESALINATION LA English DT Article C1 Univ Granada, Dept Chem Engn, E-18071 Granada, Spain. Univ Antioquia, Fac Quim Farmaceut, Medellin, Colombia. RP Guadix, EM, Univ Granada, Dept Chem Engn, E-18071 Granada, Spain. EM eguadix@ugr.es NR 2 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0011-9164 J9 DESALINATION JI Desalination PD NOV 20 PY 2006 VL 200 IS 1-3 BP 316 EP 318 DI 10.1016/j.desal.2006.03.324 PG 3 SC Engineering, Chemical; Water Resources GA 113SA UT ISI:000242616400122 ER PT J AU de Figueroa, JM Vera, A Lopez-Rodriguez, MJ AF Tierno de Figueroa, Jose Manuel Vera, Alejandro Lopez-Rodriguez, Manuel Jesus TI Adult and Nymphal Feeding in the Stonelly species Antarctoperla michaelseni and Limnoperla jaffueli from Central Chile (Plecoptera : Gripopterygidae) SO ENTOMOLOGIA GENERALIS LA English DT Article DE Antarctoperla michaelseni (Klapalek 1904); Limnoperla jaffueli (Navas 1928); diet; Levins' index; South America ID INSECTA; BIOLOGY; PICTET; CYCLE AB The study of nymphal and adult (both male and female) feeding of two Gripopterygidae species from Central Chile [Antarctoperla michaelseni (Klapalek 1904) and Limnoperla jaffueli (Navas 1928)] shows that: (a) A michaelseni nymphs feed mainly on detritus, followed by vegetable remains and fungi hyphae, while L jaffueli nymphs feed mainly on diatoms and detritus; (b) A michaelseni nymphs are shredders while L jaffueli nymphs are scrapers; (c) the main component of the studied species adult diet is Pinaceae pollen, contrasting with the widely pointed for the adult Gripopterygidae; (d) this last result shows the existence of an adaptation to a completely new food resource; (e) no sexual differences in diet are found for both species; and (f) the standardized Levins' index value is very similar for the two taxa (both nymphs and adults) and show that they present a reduced niche breadth. C1 Univ Metropolitana Ciencias Educ, Fac Ciencias, Dept Biol, Santiago, Chile. RP de Figueroa, JM, Univ Granada, Dept Biol Anim, Fac Ciencias, E-18071 Granada, Spain. EM jmtdef@ugr.es alveras2@gmail.com manujlr@ugr.es NR 25 TC 1 PU E SCHWEIZERBARTSCHE VERLAGS PI STUTTGART PA NAEGELE U OBERMILLER, SCIENCE PUBLISHERS, JOHANNESSTRASSE 3A, D 70176 STUTTGART, GERMANY SN 0171-8177 J9 ENTOMOL GEN JI Entomol. Gen. PY 2006 VL 29 IS 1 BP 39 EP 45 PG 7 SC Entomology GA 114YA UT ISI:000242700400003 ER PT J AU Catano, HC Cueva, JL Cardenas, AM Izaguirre, V Zavaleta, AI Carranza, E Hernandez, AF AF Catano, Hector C. Cueva, Jayme L. Cardenas, Anthony M. Izaguirre, VIctor Zavaleta, Amparo I. Carranza, Elizabeth Hernandez, Antonio F. TI Distribution of paraoxonase-1 gene polymorphisms and enzyme activity in a Peruvian population SO ENVIRONMENTAL AND MOLECULAR MUTAGENESIS LA English DT Article DE PON1 polymorphisms; molecular epidemiology; biomarkers of susceptibility; organophosphates; Peruvian population ID CORONARY-HEART-DISEASE; SERUM PARAOXONASE; PON1 STATUS; GLN-ARG192 POLYMORPHISM; PESTICIDE SENSITIVITY; MYOCARDIAL-INFARCTION; GREENHOUSE WORKERS; ARTERY-DISEASE; RISK; ASSOCIATION AB Paraoxonase-1 (PON1) is a serum esterase associated with high density lipoproteins and capable of detoxifying toxic metabolites of organophosphorus (OP) compounds. Two major polymorphisms have been described in the coding region of the PON1 gene at positions 192 and 55 and at least five in the S-regulatory region, the most important at position -108. Depending on the substrate, PON1 192 Q/R polymorphism can affect PON1 enzymatic activity. In the present study, we have determined the distribution of the PON1 192 Q/R and -108 C/T polymorphisms in a Peruvian population and compared the distribution of these polymorphisms with those of other world populations. POW phenotype and enzyme activity also were measured as they can influence the population resistance to the toxicity of OP compounds. The genotype distribution at position 192 was: QQ = 0.236, QR = 0.607, and RR = 0.157; and distribution at position -108 was: CC = 0.315, CT = 0.596, and TT = 0.089. The frequencies of the high activity R and C alleles were 0.461 and 0.613, respectively. The frequency of the POW 192 Q allele was significantly lower than that of American, Caucasian-American, European-Brazilian, and Costa Rican samples. Outside the American continent, the frequency of this allele was lower than for all European countries, Thais, and Indians, but higher than for Chinese or Japanese. Regarding the toxicological importance of these polymorphisms, it was inferred that POW phenotyping (assessment of the R alloform) and genotyping (determination of the PON1-108TT genotype) could be helpful as individual markers of susceptibility. POW phenotyping may be useful in further epidemiological studies involving agriculture workers occupationally exposed to OP compounds in developing countries. C1 Univ Granada, Dept Legal Med & Toxicol, Sch Med, E-18071 Granada, Spain. Univ Nacl Mayor San Marcos, Mol Biol Lab, Inst Quim Biol Microbiol & Biotecnol, Fac Farm & Bioquim, Lima 1, Peru. Univ Nacl Mayor San Marcos, Lab Bioquim, Inst Nacl Biol Andina, Fac Med, Lima, Peru. RP Hernandez, AF, Univ Granada, Dept Legal Med & Toxicol, Sch Med, Avda Madrid 11, E-18071 Granada, Spain. EM ajerez@ugr.es NR 38 TC 0 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0893-6692 J9 ENVIRON MOL MUTAGEN JI Environ. Mol. Mutagen. PD DEC PY 2006 VL 47 IS 9 BP 699 EP 706 DI 10.1002/em.20259 PG 8 SC Environmental Sciences; Genetics & Heredity; Toxicology GA 115ZU UT ISI:000242773100009 ER PT J AU Perdigao, J Gomes, G Gondo, R Fundingsland, JW AF Perdigao, Jorge Gomes, George Gondo, Renata Fundingsland, Jon W. TI In vitro bonding performance of all-in-one adhesives. Part I - Microtensile bond strengths SO JOURNAL OF ADHESIVE DENTISTRY LA English DT Article DE dental adhesion; acid etching; bond strength testing ID SELF-ETCH ADHESIVES; UNGROUND ENAMEL; SMEAR LAYERS; DENTIN; RESIN; STEP; AGGRESSIVENESS; PRIMER; RESTORATIONS; SYSTEMS AB Purpose: The objective of this project was to compare the microtensile bond strengths (mu TBS) of five "all-in-one" adhesives using two 2-step adhesives as controls. Materials and Methods: Eighty-four extracted human molars were randomly assigned to one of three substrates: dentin, unground enamel, or ground enamel. For each substrate, specimens were randomly assigned to one of five all-in-one adhesives: (1) Adper Prompt L-Pop (AP, 3M ESPE); (2) Clearfil S3 Bond (S3, Kuraray); (3) G-Bond (GB, GC America) (4) iBond (iB, Heraeus Kulzer); (5) Xeno IV (XE, Dentsply Caulk). Adper Single Bond Plus (SB, 3M ESPE) was used as a two-step etch-and-rinse control, while Clearfil SE Bond (SE, Kuraray) was used as a two-step self-etching control. Crowns were built with Filtek 2250 (3M ESPE) and sectioned in x and y directions. The resulting sticks were fractured in tension at a crosshead speed of 1 mm/min. Statistical analysis was computed for each substrate with one-way ANOVA and Duncan's post-hoc test at p < 0.05. Results: Means +/- SD are given in MPa; pretesting failures are shown in brackets. Dentin - SE: 79.1 +/- 20.5, [0/85]; SB: 76.3 +/- 19.3, [0/82]; AP: 51.6 +/- 21.9, [0/90]; XE: 40.5 +/- 22.9, [7/81]; S3: 27.8 +/- 13.2, [7/91]; iB: 17.4 +/- 15.6, [25/91]; GB: 11.7 +/- 7.4, [5/92]. Unground enamel - SB: 33.1 +/- 10.5, [0/69]; AP: 27.6 +/- 7.5, [0/66]; S3: 24.6 +/- 12.0, [0/70]; SE: 16.8 +/- 11.7, [3/60]; XE 15.4 +/- 14.1, [16/63]; iB: 11.2 +/- 11.5, [18/64]; GB: 9.5 +/- 12.4, [31/63]. Ground enamel - SB: 33.7 +/- 9.1, [0/69]; AP: 33.2 +/- 7.9, [0/77]; SE: 26.4 +/- 9.5, [0/67]; S3: 25.5 +/- 8.9; [0/56]; XE: 21.0 +/- 8.9, [3/68]; GB: 18.2 +/- 10.3, [4/68]; iB: 12.3 +/- 8.9, [11/52]. For dentin, the Duncan's test ranked the means in 6 statistical subsets: GB < iB < S3 < XE < AP < SB = SE. For unground enamel, means were ranked in 4 statistical subsets: GB = iB < XE = SE < S3 = AP < SB. For ground enamel, the means were also ranked in 4 statistical subsets: iB < GB = XE < S3 = SE < AP = SB. Conclusion: The bonding ability of the newest all-in-one adhesives depends on their specific composition. In light of the low in vitro bond strengths and high rate of spontaneous failures of some all-in-one adhesives compared to those of the two-step adhesives, the newest adhesives should be screened more strictly before they are recommended for clinical use. C1 Univ Minnesota, Dept Restorat Sci, Div Operat Dent, Minneapolis, MN 55455 USA. Univ Granada, Sch Dent, E-18071 Granada, Spain. Inst Super Ciencias Saude Egas Moniz, Postgrad Program Operat Dent, Monte De Caparica, Portugal. Univ Fed Santa Catarina, Dept Operat Dent, BR-88040900 Florianopolis, SC, Brazil. SM ESPE Dent Prod, St Paul, MN USA. RP Perdigao, J, Univ Minnesota, Dept Restorat Sci, Div Operat Dent, 8-450 Moos Tower,515 SE Delaware St, Minneapolis, MN 55455 USA. EM perdi001@umn.edu NR 48 TC 6 PU QUINTESSENCE PUBLISHING CO INC PI HANOVER PARK PA 4350 CHANDLER DRIVE, HANOVER PARK, IL 60133 USA SN 1461-5185 J9 J ADHES DENT JI J. Adhes. Dent. PD DEC PY 2006 VL 8 IS 6 BP 367 EP 373 PG 7 SC Dentistry, Oral Surgery & Medicine GA 118BA UT ISI:000242915800003 ER PT J AU Galvez, J Gracioso, JD Camuesco, D Galvez, J Vilegas, W Brito, ARMS Zarzuelo, A AF Galvez, Julio Gracioso, Juliano de Souza Camuesco, Desiree Galvez, Julio Vilegas, Wagner Monteiro Souza Brito, Alba Regina Zarzuelo, Antonio TI Intestinal antiinflammatory activity of a lyophilized infusion of Turnera ulmifolia in TNBS rat colitis SO FITOTERAPIA LA English DT Article DE Turnera ulmifolia; antiinflammatory; rat colitis ID INFLAMMATORY-BOWEL-DISEASE; ANTIOXIDANT DEFENSES; LIPID-PEROXIDATION; OXIDATIVE STRESS; FREE-RADICALS; MODEL; GLUTATHIONE; FLAVONOIDS; INHIBITORS AB Turnera ulmifolia is a plant popularly known in Brazil and South America as chanana. Some species of Turnera are widely used in folk medicine for different types of inflammatory diseases. In this study, the preventive intestinal antiinflammatory activity of a lyophilized infusion obtained from the aerial parts of T. ulmifolia was tested in the trinitrobenzenesulphonic acid (TNBS) model of rat colitis. The results obtained revealed that pretreatment to colitic rats with the extract, at 250 and 500 mg/kg, significantly attenuated the colonic damage induced by TNBS. This beneficial effect was associated with an improvement in the colonic oxidative status, since the infusion prevented the glutathione depletion that occurred as a consequence of the colonic inflammation. On the other hand, this antioxidant activity was confirmed in in vitro studies. In conclusion, the preventive effect exerted by the lyophilized infusion of T. ulmifolia in the TNBS model of rat colitis is probably related to its antioxidant properties, due to its flavonoids content. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Granada, Sch Pharm, Dept Pharmacol, E-18071 Granada, Spain. Univ Estadual Campinas, Inst Biol, Det Fisiol & Biofis, BR-13081970 Campinas, SP, Brazil. Univ Estadual Paulista, Inst Quim, Dept Quim Organ, Araraquara, SO, Brazil. RP Galvez, J, Univ Granada, Sch Pharm, Dept Pharmacol, E-18071 Granada, Spain. EM jgalvez@ugr.es NR 30 TC 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0367-326X J9 FITOTERAPIA JI Fitoterapia PD DEC PY 2006 VL 77 IS 7-8 BP 515 EP 520 DI 10.1016/j.fitote.2006.05.029 PG 6 SC Chemistry, Medicinal; Pharmacology & Pharmacy GA 118MH UT ISI:000242945900006 ER PT J AU Osorio, E Osorio, R Davidenko, N Sastre, R Aguilar, JA Toledano, M AF Osorio, Estrella Osorio, Raquel Davidenko, Natalia Sastre, Roberto Aguilar, Jose A. Toledano, Manuel TI Polymerization kinetics and mechanical characterization of new formulations of light-cured dental sealants SO JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS LA English DT Article DE light-cured dental sealant; mechanical properties; microleakage; photopolymerisation kinetics ID WATER SORPTION; RESTORATIVE MATERIALS; PHOTOPOLYMERIZATION KINETICS; HYDROLYTIC STABILITY; TENSILE-STRENGTH; COMPOSITES; RESINS; SOLUBILITY; HYDROXYAPATITE; CONVERSION AB The aim of the study was to develop and evaluate the in vitro performance of a new and simplified formulation of photocuring resin to be used as dental sealant. Two experimental dental sealants (CYTED1 and CYTED2) were formulated and their kinetic of polymerisation and physico-chemical properties were studied and compared to those of two commercially available sealants (Helioseal, Delton-FS). Rates of photoinitiated polymerisation (Rp), as well as the conversions and the quantum yields of polymerisation (phi(p)) were calculated. Flexural strength, Young's modulus, microhardness, microleakage, water sorption, and solubility were also tested. ANOVA, Student-Newman-Keuls, Pearson correlation and Kruskal-Wallis tests were used (p < 0.05). The highest Rp and phi(p) were obtained for the sealant CYTED2, Rp and phi(p) were similar for CYTED1 and Helioseal, and the lowest for Delton. Water sorption values were similar for Helioseal and CYTED2 being higher for CYTED1 and lower for Delton. No differences were found for solubility and microleakage values. Mechanical properties were better for Delton and no differences were found within the rest of the sealants. At short irradiation times (30 s), the maximum effectiveness of the photoinitiating system was obtained by the experimental CYTED2. (c) 2006 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 8013: 18-24, 2007 C1 Univ Granada, Sch Dent, Dept Dent Mat, E-18071 Granada, Spain. Univ La Habana, Biomat Res Ctr, Havana, Cuba. CSIC, Inst Sci & Technol Polymers, Madrid 6, Spain. Univ Peruana Cayetano Heredia, Sch Dent, Lima, Peru. RP Toledano, M, Univ Granada, Sch Dent, Dept Dent Mat, E-18071 Granada, Spain. EM toledano@ugr.es NR 42 TC 0 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 1552-4973 J9 J BIOMED MATER RES PART B JI J. Biomed. Mater. Res. Part B PD JAN PY 2007 VL 80B IS 1 BP 18 EP 24 DI 10.1002/jbm.b.30563 PG 7 SC Engineering, Biomedical; Materials Science, Biomaterials GA 119NE UT ISI:000243018200003 ER PT J AU Vilchez, JL Navalon, A Araujo, L Prieto, A AF Vilchez, J. L. Navalon, A. Araujo, L. Prieto, A. TI Determination of danofloxacin and marbofloxacin in milk samples by micellar liquid chromatography with fluorescence detection SO ANALYTICAL LETTERS LA English DT Article DE micellar liquid chromatography; danofloxacin; marbofloxacin; antibacterials; milk analysis ID URINE SAMPLES; DIRECT-INJECTION; BOVINE MUSCLE; METHODOLOGY; QUINOLONES; VALIDATION; PRODUCTS; RESIDUES AB A simple, rapid, and sensitive analytical method has been developed for the determination of two fluoroquinolones, danofloxacin and marbofloxacin, in bovine milk samples. Separation and quantification were performed by micellar liquid chromatography with fluorescence detection (MLC-FD), using sodium dodecyl sulfate (SDS) as a surfactant. The influence of the principal factors, namely, the micelle concentration, the amount of organic modifier, tail-reducing agents, the pH, and the temperature were studied. The suitable condition was found to be 75 mM SDS-10 mM phosphate buffer-18 mM tetrabutylammonium bromide/3% (v/v) 1-propanol at pH 3.0 for the separation of marbofloxacin, danofloxacin, and tosufloxacin (internal standard) in about 20 min. The linear concentration range of application was 1.8-30.0 ng (.) mL(-1) for danofloxacin and 16-120 ng (.) mL(-1) for marbofloxacin, and the relative standard deviation ranged between 4.9 and 2.7%. The limit of detection found for danofloxacin was 0.5 ng (.) mL(-1) and 5 ng (.) mL(-1) for marbofloxacin. These values were lower than the maximum residue limits (MRLs) established by the European Union for these compounds in bovine milk. It was applied to check the eventual existence of these compounds above these limits on commercial milk samples. The validation method was completed with spiked milk samples. Recovery levels obtained were 90.3 - 108.2%. C1 Univ Granada, Fac Sci, Dept Analyt Chem, Res Grp Analyt Chem & Life Sci, E-18071 Granada, Spain. Univ Zulia, Fac Engn, Lab Analyt Chem Elect, Maracaibo, Venezuela. RP Navalon, A, Univ Granada, Fac Sci, Dept Analyt Chem, Res Grp Analyt Chem & Life Sci, Avda Fuenenueva S-N, E-18071 Granada, Spain. EM anavalon@ugr.es NR 28 TC 0 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0003-2719 J9 ANAL LETT JI Anal. Lett. PD FEB PY 2007 VL 40 IS 3 BP 601 EP 613 DI 10.1080/00032710600966101 PG 13 SC Chemistry, Analytical GA 120XR UT ISI:000243120600015 ER PT J AU Pisani-Proenca, J Erhardt, MCG Valandro, LF Gutierrez-Aceves, G Bolanos-Carmona, MV Del Castillo-Salmeron, R Bottino, MA AF Pisani-Proenca, Jatyr Erhardt, Maria Carolina G. Valandro, Luiz Felipe Gutierrez-Aceves, Guillermo Bolanos-Carmona, Maria Victoria Del Castillo-Salmeron, Ramon Bottino, Marco Antonio TI Influence of ceramic surface conditioning and resin cements on microtensile bond strength to a glass ceramic SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article ID COMPOSITE RESIN; LUTING CEMENT; PORCELAIN; DENTIN; SYSTEMS; STORAGE; SILANE AB Statement of problem. It is not clear how different glass ceramic surface pretreatments influence the bonding capacity of various luting agents to these surfaces. Purpose. The purpose of this study was to evaluate the microtensile bond strength (mu TBS) of 3 resin cements to a lithia disilicate-based ceramic submitted to 2 surface conditioning treatments. Material and methods. Eighteen 5 X 6 X 8-mm ceramic (IPS Empress 2) blocks were fabricated according to manufacturer's instructions and duplicated in composite resin (Tetric Ceram). Ceramic blocks were polished and divided into 2 groups (n=9/treatment): no conditioning (no-conditioning/control), or 5% hydrofluoric acid etching for 20 seconds and silanization for 1 minute (HF + SIL). Ceramic blocks were cemented to the composite resin blocks with I self-adhesive universal resin cement (RelyX Unicem) or 1 of 2 resin-based luting agents (Multilink or Panavia F), according to the manufacturer's instructions. The composite resin-ceramic blocks were stored in humidity at 37 degrees C for 7 days and serially sectioned to produce 25 beam specimens per group with a 1.0-mm(2) cross-sectional area. Specimens were thermal cycled (5000 cycles, 5 degrees C-55 degrees C) and tested in tension at 1 mm/min. Microtensile bond strength data (MPa) were analyzed by 2-way analysis of variance and Tukey multiple comparisons tests (alpha=.05). Fractured specimens were examined with a stereomicroscope (X40) and classified as adhesive, mixed, or cohesive. Results. The surface conditioning factor was significant (HF+SIL > no-conditioning) (P<.0001). Considering the unconditioned groups, the mu TBS of RelyX Unicem was significantly higher (9.6 +/- 1.9) than that of Multilink (6.2 +/- 1.2) and Panavia F (7.4 +/- 1.9). Previous etching and silanization yielded statistically higher mu TBS values for RelyX Unicem (18.8 +/- 3.5) and Multilink (17.4 +/- 3.0) when compared to Panavia F (15.7 +/- 3.8). Spontaneous debonding after thermal cycling was detected when luting agents were applied to untreated ceramic surfaces. Conclusion. Etching and silanization treatments appear to be crucial for resin bonding to a lithia disilicate-based ceramic, regardless of the resin cement used. C1 Univ Fed Santa Maria, Sch Dent, Dept Restorat Dent, Div Prosthodont, BR-97015372 Santa Maria, RS, Brazil. Univ Granada, Sch Dent, Dept Dent Mat, Granada, Spain. Univ Granada, Sch Dent, Dept Dent Mat, Granada, Spain. Univ Granada, Sch Dent, Dept Prosthodont, Granada, Spain. Autonom Univg Mexico, Sch Dent, Dept Dent Mat, Mexico City, DF, Mexico. Sao Paulo State Univ, Sch Dent, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, SP, Brazil. RP Valandro, LF, Univ Fed Santa Maria, Sch Dent, Dept Restorat Dent, Div Prosthodont, Rua Marechal Floriano 1184, BR-97015372 Santa Maria, RS, Brazil. EM lfvalandro@hotmail.com NR 35 TC 2 PU MOSBY-ELSEVIER PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD DEC PY 2006 VL 96 IS 6 BP 412 EP 417 DI 10.1016/j.prosdent.2006.09.023 PG 6 SC Dentistry, Oral Surgery & Medicine GA 121PZ UT ISI:000243170800005 ER PT J AU Santoro, M Caffaratti, E Salas-Peregrin, JM Korecz, L Rockenbauer, A Sala, LF Signorella, S AF Santoro, Mabel Caffaratti, Evangelina Salas-Peregrin, Juan Manuel Korecz, Laszlo Rockenbauer, Antal Sala, Luis F. Signorella, Sandra TI Kinetics and mechanism of the chromic oxidation of myo-inositol SO POLYHEDRON LA English DT Article DE chromate; myo-inositol; redox chemistry; complexation chemistry ID CR-V; AQUACHROMIUM(IV) ION; CHROMIUM(VI); REDUCTION; ACID; CHEMISTRY; CARCINOGENESIS; COORDINATION; COMPLEXES; RELEVANCE AB The oxidation of D-inyo-inositol (Myo) by Cr-VI yields the inosose and Cr3+ as final products when an excess of cyclitol over Cr-VI is used. The redox reaction takes place through the combination of Cr-VI -> Cr-IV -> Cr-II and Cr-VI -> Cr-IV -> Cr-III pathways. Intermediacy of Cr-IV was evidenced by the detection of CrO22+, formed by reaction of Cr-II with O-2. The EPR spectra show that five- and six-coordinated oxo-Cr-V intermediates are formed, with the cyclitol acting as bidentate ligand. Penta-coordinated oxo-Cr-V species are present at any [H+], whereas hexa-coordinated ones are only observed at pH < 1, where rapidly decompose to the redox products. At higher pH, where hexa-coordinated oxo-Cr-V species are not observed, oxo-Cr-V bischelates are stable enough to remain long time in solution. (c) 2006 Elsevier Ltd. All rights reserved. C1 Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim Fis, RA-2000 Rosario, Santa Fe, Argentina. Univ Granada, Fac Ciencias, Dept Quim Inorgan, E-18071 Granada, Spain. Chem Res Ctr, H-1025 Budapest, Hungary. RP Sala, LF, Univ Nacl Rosario, Fac Ciencias Bioquim & Farmaceut, Dept Quim Fis, Suipacha 531, RA-2000 Rosario, Santa Fe, Argentina. EM lsala@fbioyf.unr.edu.ar signorel@infovia.com.ar NR 39 TC 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0277-5387 J9 POLYHEDRON JI Polyhedron PD JAN 2 PY 2007 VL 26 IS 1 BP 169 EP 177 DI 10.1016/j.poly.2006.08.003 PG 9 SC Chemistry, Inorganic & Nuclear; Crystallography GA 127YJ UT ISI:000243622000024 ER PT J AU Gallego, A Gil, JF Castro, E Piotrkowski, R AF Gallego, Antolino Gil, Jose F. Castro, Enrique Piotrkowski, Rosa TI Identification of coating damage processes in corroded galvanized steel by acoustic emission wavelet analysis SO SURFACE & COATINGS TECHNOLOGY LA English DT Article DE acoustic emission; wavelet analysis; coating adherence; galvanized steel ID CORROSION; ZINC; ADHERENCE; MECHANISM; BEHAVIOR AB Scratch tests using Acoustic Emission (AE) were performed on corroded hot dip galvanized samples. Coatings and scratches were studied by scanning electron microscopy and electron dispersive X-ray spectrometry, and the coatings additionally by X-ray diffraction. Damage mechanisms could be identified applying Wavelet Transform analysis to AE signals. The evolution of specific AE wavelet parameters like the wavelet power was suited to identify damage mechanisms. In general, the AE power was distributed in certain scale (frequency) bands in the time-scale plane, and different coating damage mechanisms could be assigned to different bands. In particular, signals due to corrosion and non-corrosion mechanisms could be neatly separated. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Granada, Dept Fis Aplicada, E-18071 Granada, Spain. Univ Granada, EU Arquitectura Tecn, E-18071 Granada, Spain. Univ Jaen, Dept Fis, Jaen 23071, Spain. Univ Nacl Gen San Martin, ECyT, RA-1650 Buenos Aires, DF, Argentina. RP Gallego, A, Univ Granada, Dept Fis Aplicada, E-18071 Granada, Spain. EM antolino@ugr.es NR 18 TC 0 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD JAN 15 PY 2007 VL 201 IS 8 BP 4743 EP 4756 DI 10.1016/j.sufcoat.2006.10.018 PG 14 SC Materials Science, Coatings & Films; Physics, Applied GA 128KF UT ISI:000243655900033 ER PT J AU de Leon, J Diaz, FJ Aguilar, MC Jurado, D Gurpegui, M AF de Leon, Jose Diaz, Francisco J. Aguilar, M. Carmen Jurado, Dolores Gurpegui, Manuel TI Does smoking reduce akathisia? Testing a narrow version of the self-medication hypothesis SO SCHIZOPHRENIA RESEARCH LA English DT Article DE schizophrenia; antipsychotics; smoking; heavy smoking; akathisia; agitation; allostasis ID NEUROLEPTIC-INDUCED PARKINSONISM; NICOTINIC RECEPTOR MECHANISMS; PLACEBO-CONTROLLED TRIAL; PURSUIT EYE-MOVEMENTS; 2-YEAR FOLLOW-UP; CIGARETTE-SMOKING; SCHIZOPHRENIC-PATIENTS; PSYCHIATRIC-PATIENTS; TARDIVE-DYSKINESIA; DOUBLE-BLIND AB Background: The self-medication hypothesis proposes that schizophrenia patients smoke to decrease their schizophrenia symptoms or antipsychotic side effects, but they usually start smoking before their illness and heavy smoking is not consistently associated with fewer symptoms or side effects. A narrow version of the self-medication hypothesis, heavy smoking reduces akathisia, is explored. Method: The sample included 250 outpatients with DSM-IV schizophrenia assessed with the Positive and Negative Syndrome Scale (PANSS) and the Barnes Akathisia Scale. Prevalences were 69% (173/250) for smoking, 39% (98/250) for heavy smoking (>= 30 cigarettes/day), 7% (17/250) for akathisia (Bames Global score > 1), 14% (35/250) for a broader akathisia definition (Barnes Global score > 0) and 20% for excited symptoms (> 1 on the PANSS factor score). Results: Heavy smoking was not associated with akathisia (41% of patients with akathisia were heavy smokers versus 39% of patients without akathisia; x(2) =03, df= 1, p=0.86), even after correcting for confounding factors and/or using a broader akathisia definition. Heavy smoking was associated with excited schizophrenia symptoms (possibly reflecting agitation). Particularly in patients taking lower doses of typical antipsychotics, excited symptoms, with or without akathisia, were strongly associated with heavy smoking and appear to interact with patients' reports of smoking's calming effect as the main reason for smoking. Conclusion: The self-medication hypothesis does not explain increased smoking and heavy smoking in schizophrenia. Moreover, heavy smoking may be associated with more disturbed brain homeostatic mechanisms. Prospective studies need to explore whether temporary increases in cigarette smoking may be associated with periods of higher agitation, with or without akathisia. (c) 2006 Elsevier B.V. All rights reserved. C1 Eastern State Hosp, Mental Hlth Res Ctr, Lexington, KY 40508 USA. Univ Granada, Dept Psychiat, E-18071 Granada, Spain. Univ Granada, Inst Neurosci, E-18071 Granada, Spain. Univ Nacl, Dept Stat, Medellin, Colombia. Univ Granada, Dept Prevent Med & Publ Hlth, E-18071 Granada, Spain. RP de Leon, J, Eastern State Hosp, Mental Hlth Res Ctr, 627 W 4th St, Lexington, KY 40508 USA. EM jdeleon@uky.edu NR 91 TC 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-9964 J9 SCHIZOPHR RES JI Schizophr. Res. PD SEP PY 2006 VL 86 IS 1-3 BP 256 EP 268 DI 10.1016/j.schres.2006.05.009 PG 13 SC Psychiatry GA 130BV UT ISI:000243775100033 ER PT J AU Gurpegui, M Aguilar, MC Martinez-Ortega, JM Jurado, D Diaz, FJ Quintana, HM de Leon, J AF Gurpegui, Manuel Aguilar, M. Carmen Martinez-Ortega, Jose M. Jurado, Dolores Diaz, Francisco J. Quintana, Hernando M. de Leon, Jose TI Fewer but heavier caffeine consumers in schizophrenia: A case-control study SO SCHIZOPHRENIA RESEARCH LA English DT Article DE schizophrenia; caffeine; coffee; tobacco smoking; nicotine; alcohol; case-control study ID GENERAL HEALTH QUESTIONNAIRE; NICOTINE DEPENDENCE; SCALED VERSION; ALCOHOL; TOBACCO; POPULATION; CONSUMPTION; SUBSTANCE; SAMPLE; ABUSE AB According to the literature, there is an association between schizophrenia and caffeine consumption, but it is not clear whether schizophrenia is associated with either higher prevalence of daily caffeine intake or the amount consumed. In this study we compared our previously published schizophrenia patients (n = 250) with a control sample (n = 290) after controlling for demogaphic variables and tobacco and alcohol consumption. Current caffeine intake was less frequent in schizophrenia patients (59%, 147/250) than in controls (70%, 204/290). In the multivariate analyses, caffeine intake was less frequent at an older age and in schizophrenia patients, and more frequent in smokers and alcohol users. Among caffeine consumers, heavy caffeine intake (>= 200 mg/day) was significantly associated with schizophrenia (64%, 94/147 in schizophrenia versus 36%, 73/204 in controls), as well as older age and smoking. Daily amount of caffeine intake and smoked cigarettes correlated significantly in the schizophrenia group but not in the control group; the correlation of caffeine intake with nicotine dependence was low and non-significant in both groups. The association between current smoking and heavy caffeine intake may be partly explained by a pharmacokinetic effect: tobacco smoke compounds induce caffeine metabolism by the cytochrome P450 1A2. Although schizophrenia by itself may be associated with heavy caffeine intake in caffeine users, part of this association was explained by the association between schizophrenia and smoking. The relationship between caffeine and alcohol intake appeared to be more complex; alcohol and caffeine use were significantly associated, but within caffeine users alcohol was associated with less frequent heavy caffeine consumption among smokers. In future studies, the measurement of plasma caffeine levels will help both to better define heavy caffeine intake and to control for smoking pharmacokinetic effects. (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Granada, Sch Med, Dept Psychiat, E-18071 Granada, Spain. Univ Granada, Sch Med, Inst Neurosci, E-18071 Granada, Spain. Univ Granada, Sch Med, Dept Prevent Med & Publ Hlth, E-18071 Granada, Spain. Univ Nacl, Dept Stat, Medellin, Colombia. Inst Tecnol Metropolitano, Medellin, Colombia. Eastern State Hosp, Mental Hlth Res Ctr, Lexington, KY USA. RP Gurpegui, M, Univ Granada, Sch Med, Dept Psychiat, Av Madrid 11, E-18071 Granada, Spain. EM gurpegui@ugr.es NR 34 TC 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-9964 J9 SCHIZOPHR RES JI Schizophr. Res. PD SEP PY 2006 VL 86 IS 1-3 BP 276 EP 283 DI 10.1016/j.schres.2006.04.022 PG 8 SC Psychiatry GA 130BV UT ISI:000243775100035 ER PT J AU Tosta, VC Tavares, MG Fernandes-Salomao, TM Barros, EG Campos, LAO Camacho, JPM AF Tosta, V. C. Tavares, M. G. Fernandes-Salomao, T. M. Barros, E. G. Campos, L. A. O. Camacho, J. P. M. TI Development of a SCAR marker for the analysis of B chromosome presence in Partamona helleri (Hymenoptera, Apidae) SO CYTOGENETIC AND GENOME RESEARCH LA English DT Article ID SUPERNUMERARY CHROMOSOMES; MELIPONINAE; DNA; EVOLUTION AB Chromosomes in hymenopteran insects cannot currently be analysed in adult individuals. The only available cytogenetic techniques need to be performed in larvae. Here we develop and implement a SCAR (Sequence Characterized Amplified Region) marker, associated with B chromosomes in the bee Partamona helleri, which has proven to be very useful to reveal B chromosome presence in adults from natural populations. The marker was tested in ten different colonies simultaneously analysed by both molecular (ten adults per colony) and cytogenetic (20 larvae per colony) techniques. The presence of the SCAR marker always showed the same pattern as B chromosome presence: both were present or absent in all individuals from a same colony, or both were present in only part of the individuals from a same colony. This molecular marker is thus a useful tool for analysing new aspects of this B chromosome system such as B frequency and geographical distribution, B transmission, or B effects in adult individuals. Copyright (c) 2007 S. Karger AG, Basel C1 Univ Granada, Dept Genet, SP-8071 Granada, Spain. Univ Fed Espirito Santo, Ctr Univ Norte Espirito Santo, Dept Ciencias Saude Biol & Agrarias, Boa Vista, Brazil. Univ Fed Vicosa, Dept Biol Geral, Vicosa, MG, Brazil. Univ Fed Vicosa, BIOAGRO, Vicosa, MG, Brazil. RP Camacho, JPM, Univ Granada, Dept Genet, SP-8071 Granada, Spain. EM jpmcamac@ugr.es NR 16 TC 0 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 1424-8581 J9 CYTOGENET GENOME RES JI Cytogenet. Genome Res. PY 2007 VL 116 IS 1-2 BP 127 EP 129 DI 10.1159/000097430 PG 3 SC Cell Biology; Genetics & Heredity GA 133EN UT ISI:000243995400020 ER PT J AU Farnier, M Roth, E Gil-Extremera, B Mendez, GF Macdonell, G Hamlin, C Perevozskaya, I Davies, MJ Kush, D Mitchel, YB AF Farnier, Michel Roth, Eli Gil-Extremera, Blas Mendez, Gustavo F. Macdonell, Geraldine Hamlin, Constance Perevozskaya, Inna Davies, Michael J. Kush, Debra Mitchel, Yale B. CA Ezetimibe Simvastatin Fenofibrate TI Efficacy and safety of the coadministration of ezetimibe/simvastatin with fenofibrate in patients with mixed hyperlipidemia SO AMERICAN HEART JOURNAL LA English DT Article ID PLACEBO-CONTROLLED TRIAL; CORONARY-ARTERY-DISEASE; PRIMARY HYPERCHOLESTEROLEMIA; DOUBLE-BLIND; SIMVASTATIN; EZETIMIBE; CHOLESTEROL; STATINS; RISK AB Background Mixed hyperlipidemia is characterized by elevated low-density lipoprotein cholesterol (LDL-C), triglycericle (TG), and TG-rich lipoprotein levels. Methods In a multicenter, randomized, double-blind, placebo-controlled, parallel arm trial, eligible patients were 18 to 79 years of age, with mixed hyperlipidemia (LDL-C 130-220 mg/c1L, TG 150-500 mg/dL). Patients with type 2 diabetes were limited to those with LDL-C of 100 to 180 mg/dL. Patients (N = 611) were randomized in a 3:3:3:1 ratio to one of 4 treatment arms for 12 weeks: ezetimibe/simvastatin 10/20 mg (EZE/SIMVA) + fenofibrate 160 mg (FENO), EZE/SIMVA 10/20 mg, FENO 160 mg, or placebo. The primary objective was to evaluate the LDL-C-lowering efficacy of EZE/SIMVA + FENO versus FENO monotherapy. Results Low-density lipoprotein cholesterol level was significantly (P <.05) reduced with EZE/SIMVA + FENO (-45.8%) compared with FENO 1- 15.7%) or placebo (-3.5%), but not when compared with EZE/SIMVA (-47. 1 %). Highdensity lipoprotein cholesterol and apolipoprotein A-1 levels were significantly increased with EZE/SIMVA + FENO (18.7% and 11. 1 %, respectively) treatment compared with EZE/SIMVA (9.3% and 6.6%) or placebo (11 % and 1.6%), but not when compared with FENO (18.2% and 10.8%). Triglyceride, non-high-density lipoprotein cholesterol, and apolipoprotein B levels were significantly reduced with EZE/5IMVA + FENO (-50.0%, --50.5%, and 44.7%, respectively) versus all other treatments. Treatment with EZE/SIMVA + FENO was generally well tolerated with a safety profile similar to the EZE/SIMVA and FENO therapies. Conclusions Coadministration of EZE/SIMVA + FENO effectively improved the overall atherogenic lipid profile of patients with mixed hyperlipidemia. Clinical trial registry number: NCT 00093899 (http://www.ClinicalTrials.gov). C1 Point Med, Rond Point Nat, F-21000 Dijon, France. Sterling Res Grp, Cincinnati, OH USA. Univ Granada, Hosp Univ San Cecilia, Granada, Spain. UMAE Hosp Especial, Veracruz, Mexico. Merck Res Labs, Rahway, NJ USA. RP Farnier, M, Point Med, Rond Point Nat, F-21000 Dijon, France. EM michelfornier@nerim.net NR 19 TC 0 PU MOSBY-ELSEVIER PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA SN 0002-8703 J9 AMER HEART J JI Am. Heart J. PD FEB PY 2007 VL 153 IS 2 AR 335.e1 DI 10.1016/j.chj.2006.10.031 PG 15 SC Cardiac & Cardiovascular Systems GA 133XQ UT ISI:000244047600031 ER PT J AU Fernandez, AM Vera-Villarroel, P Sierra, JC Zubeidat, I AF Fernandez, Ana Maria Vera-Villarroel, Pablo Sierra, Juan Carlos Zubeidat, Ihab TI Distress in response to emotional and sexual infidelity: Evidence of evolved gender differences in Spanish students SO JOURNAL OF PSYCHOLOGY LA English DT Article DE emotional infidelity; forced-choice format; infidelity scenarios; jealousy; sexual infidelity ID UNITED-STATES; JEALOUSY; EVOLUTIONARY; PATTERNS; ORIGINS; TESTS AB The authors studied gender differences in response to hypothetical infidelity in Spanish students. Using a forced-choice methodology, the authors asked a sample of 266 participants to indicate which kind of infidelity would be more distressing: emotional or sexual. Men were significantly more distressed by sexual infidelity than were women, and women were significantly more distressed by emotional infidelity than were men. Results supported the hypothesis that particular infidelity types, which resemble adaptive problems that human beings faced in the past, contribute to the psychology of jealousy. The results are consistent with previous cross-cultural research. C1 Univ Santiago Chile, Escuels Psicol, Santiago, Chile. Univ Granada, E-18071 Granada, Spain. RP Fernandez, AM, Univ Santiago Chile, Escuels Psicol, Ave Ecuador 3650,Tercer Piso, Santiago, Chile. EM anfernan@usach.cl NR 25 TC 0 PU HELDREF PUBLICATIONS PI WASHINGTON PA 1319 EIGHTEENTH ST NW, WASHINGTON, DC 20036-1802 USA SN 0022-3980 J9 J PSYCHOL JI J. Psychol. PD JAN PY 2007 VL 141 IS 1 BP 17 EP 24 PG 8 SC Psychology, Multidisciplinary GA 133YC UT ISI:000244048800002 ER PT J AU Gurpegui, M Martinez-Ortega, JM Jurado, D Aguilar, MC Diaz, FJ de Leon, J AF Gurpegui, Manuel Martinez-Ortega, Jose M. Jurado, Dolores Aguilar, M. Carmen Diaz, Francisco J. de Leon, Jose TI Subjective effects and the main reason for smoking in outpatients with schizophrenia: a case-control study SO COMPREHENSIVE PSYCHIATRY LA English DT Article ID GENERAL HEALTH QUESTIONNAIRE; PLACEBO-CONTROLLED TRIAL; NICOTINE DEPENDENCE; ANTIPSYCHOTIC MEDICATIONS; TOBACCO SMOKING; SCALED VERSION; NASAL SPRAY; CESSATION; SMOKERS; REPLICATION AB This study examines in daily smokers (1) subjective effects and main reason for smoking after controlling for nicotine dependence level in 100 controls and 173 patients with Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, schizophrenia and (2) the association of specific subjective effects and schizophrenia symptoms. The subjective effects and the main reason for smoking were studied using a questionnaire and the schizophrenia symptoms with the Positive and Negative Syndrome Scale. Proportions were compared by odds ratios controlling for the effects of sex, age, education, and level of nicotine dependence by logistic regression. Schizophrenia was strongly associated with subjective effects of cheerfulness, agility, alertness, concentration, and calmness. In patients with schizophrenia, a cheerfulness effect was associated with higher depressive symptoms; a calming effect, with higher anxiety symptoms; and a sociability effect, with lower negative symptoms. Compared with controls, desire for calmness as the main reason for smoking was more frequent in patients with schizophrenia. These survey data call for confirmation through experimental studies and may help in the design of more focused smoking cessation programs for these patients. (c) 2007 Elsevier Inc. All rights reserved. C1 Univ Granada, Sch Med, Dept Psychiat, E-18071 Granada, Spain. Univ Granada, Sch Med, Dept Prevent Med & Publ Hlth, E-18071 Granada, Spain. Univ Nacl, Dept Stat, Medellin 3840, Colombia. Eastern State Hosp, Mental Hlth Res Ctr, Lexington, KY USA. RP Gurpegui, M, Univ Granada, Sch Med, Dept Psychiat, Av Madrid 11, E-18071 Granada, Spain. EM gurpegui@ugr.es NR 44 TC 1 PU W B SAUNDERS CO-ELSEVIER INC PI PHILADELPHIA PA 1600 JOHN F KENNEDY BOULEVARD, STE 1800, PHILADELPHIA, PA 19103-2899 USA SN 0010-440X J9 COMPR PSYCHIAT JI Compr. Psychiat. PD MAR-APR PY 2007 VL 48 IS 2 BP 186 EP 191 DI 10.1016/j.comppsych.2006.10.002 PG 6 SC Psychiatry GA 139DJ UT ISI:000244412200012 ER PT J AU Cano, A Cozman, FG Lukasiewicz, T AF Cano, Andres Cozman, Fabio G. Lukasiewicz, Thomas TI Reasoning with imprecise probabilities SO INTERNATIONAL JOURNAL OF APPROXIMATE REASONING LA English DT Editorial Material C1 Univ Granada, ETS Ingn Informat, Dept Comp Sci & Artificial Intelligence, E-18071 Granada, Spain. Univ Sao Paulo, Escola Politecn, Sao Paulo, Brazil. Univ Roma La Sapienza, Dipartimento Informat & Sistemist, I-00198 Rome, Italy. Vienna Univ Technol, Inst Informat Syst, A-1040 Vienna, Austria. RP Cano, A, Univ Granada, ETS Ingn Informat, Dept Comp Sci & Artificial Intelligence, E-18071 Granada, Spain. EM acu@decsai.ugr.es fgcozman@usp.br lukasiewicz@kr.tuwien.ac.at NR 0 TC 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0888-613X J9 INT J APPROX REASONING JI Int. J. Approx. Reasoning PD MAR PY 2007 VL 44 IS 3 BP 197 EP 199 DI 10.1016/j.ijar.2006.09.001 PG 3 SC Computer Science, Artificial Intelligence GA 141ZP UT ISI:000244618200001 ER PT J AU Pereira, TMD Suarez, JC Lopes, I Martin-Ruiz, S Amado, PJ Garrido, R Rodriguez, E Costa, V Rolland, A Ferro, AA Sareyan, JP AF Pereira, T. M. D. Suarez, J. C. Lopes, I. Martin-Ruiz, S. Amado, P. J. Garrido, R. Rodriguez, E. Costa, V. Rolland, A. Ferro, A. Arellano Sareyan, J. -P. TI Searching for signatures of stochastic excitation in stellar pulsations: a look at gamma Doradus stars SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE methods : statistical; stars : statistics; stars : oscillations; stars : fundamental parameters ID FREQUENCY RATIO METHOD; VARIABLE-STARS; DELTA-SCUTI; CLUSTER; DOZEN AB In stellar oscillations, the temporal variation in the amplitude of a given mode can yield some information about the interior of the star. In what concerns the excitation mechanism, it has been shown that for oscillations that are excited and damped by a physical process in stochastic equilibrium, the ratio of the standard deviation of the amplitude sigma(A) over the amplitude mean value mu(A) is of the order of 0.52. This "statistical signature" is a general property of stochastically excited oscillations, so it can be used with any type of star-making it a powerful tool. Although the method is simple, its reliability and robustness have yet to be proven. With the help of simulations, these points are addressed in the present work, and the observational requirements for this method to work are more clearly defined. We show that a number of amplitude measurements of about 10(2) are required to get a good estimate of sigma(A)/mu(A). The method is also tested against the complication of having a time series crowded with many modes (unresolvable in short time series), and results show that the theoretical relation of sigma(A)/mu(A) still holds true. Some of the motivation behind the new tests of the method involves applying it to gamma Doradus stars. The open question of what drives oscillations in these stars makes this statistical method very interesting when applied to gamma Doradus stars. A test of the method is performed using. Doradus observations. As expected, the results are inconclusive and demonstrate how ground-based observations of. Doradus stars hardly fulfill the applicability requirements of the method. We show, however, how a possible scenario of stochastic excitation in these stars could be detected with the COROT space mission. C1 Inst Super Tecn, Ctr Multidisciplinar Astrofis, P-1049001 Lisbon, Portugal. CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain. Ctr Geofis Evora, Dept Fis, Evora, Portugal. Univ Granada, Dept Fis Teor & Cosmos, Granada, Spain. Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico. Observ Cote Azur, GEMINI, UMR 6203, F-06304 Nice 4, France. RP Pereira, TMD, Inst Super Tecn, Ctr Multidisciplinar Astrofis, Av Rovisco Pais, P-1049001 Lisbon, Portugal. EM tiago@mso.anu.edu.au NR 30 TC 1 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD MAR PY 2007 VL 464 IS 2 BP 659 EP 665 DI 10.1051/0004-6361:20065355 PG 7 SC Astronomy & Astrophysics GA 142VU UT ISI:000244679500032 ER PT J AU Akhlaki, KB Tunon, MIC Terriza, JAH Morales, LEM AF Akhlaki, K. Benghazi Tunon, M. I. Capel Terriza, J. A. Holgado Morales, L. E. Mendoza TI A methodological approach to the formal specification of real-time systems by transformation of UML-RT design models SO SCIENCE OF COMPUTER PROGRAMMING LA English DT Article DE CSP plus T; formal specification; real-time software systems; UML-RT AB By following a methodological approach, introduced in a previous work, a correct system specification in terms of CSP+T process algebra is systematically obtained from the UML-RT model of a real-time software system. Among other contributions, this article aims at integrating collaboration diagrams into our approach to facilitate the specification of capsules in UML-RT design models. Thus, an improved systematic transformation procedure for deriving a correct and complete formal system specification of real-time systems is established here. Temporal requirements integration in the design and system specification stages of a real-time system is also addressed, so that the approach now opens up the possibility of carrying out scheduling and dependability analysis at the design phase of the system development life cycle for hard real-time systems. The article also discusses a practical application to present a systematic transformation from a UML-RT model of a well known manufacturing-industry paradigmatic case, the "Production Cell". (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Granada, Dept Lenguajes & Sistemas Informat, ETSI Informat & Telecomunicac, E-18071 Granada, Spain. Univ Simon Bolivar, Dept Proc & Sistemas, Caracas 1080A, Venezuela. RP Akhlaki, KB, Univ Granada, Dept Lenguajes & Sistemas Informat, ETSI Informat & Telecomunicac, E-18071 Granada, Spain. EM benghazi@ugr.es mcapel@ugr.es jholgado@ugr.es lmendoza@usb.ve NR 20 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-6423 J9 SCI COMPUT PROGRAM JI Sci. Comput. Program. PD MAR 1 PY 2007 VL 65 IS 1 BP 41 EP 56 DI 10.1016/j.scico.2006.08.005 PG 16 SC Computer Science, Software Engineering GA 144CB UT ISI:000244771700006 ER PT J AU Sepulveda, E Perez-Mendoza, D Munoz, S Ramirez-Romero, MA Soto, MJ Cervantes, L Herrera-Cervera, JA Lopez-Lara, IS Geiger, O Sanuan, J Brom, S Romero, D AF Sepulveda, Edgardo Perez-Mendoza, Daniel Munoz, Socorro Ramirez-Romero, Miguel A. Soto, Maria Jose Cervantes, Laura Herrera-Cervera, Jose A. Lopez-Lara, Isabel Sabel Geiger, Otto Sanuan, Juan Brom, Susana Romero, David TI Regulation of conjugal transfer of the Rhizobium etli Sym plasmid. SO PLASMID LA English DT Meeting Abstract C1 Univ Nacl Autonoma Mexico, Ctr Ciencias Genom, Cuernavaca 62191, Morelos, Mexico. CSIC, Estacion Experimental Zaidin, Granada, Spain. Univ Granada, Granada, Spain. NR 1 TC 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0147-619X J9 PLASMID JI Plasmid PD MAR PY 2007 VL 57 IS 2 BP 220 EP 221 PG 2 SC Genetics & Heredity GA 152PM UT ISI:000245374100095 ER PT J AU Mota, AL Arriola, ER AF Mota, A. L. Arriola, E. Ruiz TI Relativistic NJL model with light and heavy quarks SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article ID JONA-LASINIO MODEL; FLAVOR DYNAMICS; SYMMETRY AB We study the Nambu-Jona-Lasinio model with light and heavy quarks in a relativistic approach. We emphasize relevant regularization issues as well as the transition from light to heavy quarks. The approach of the electromagnetic meson form factor to the Isgur-Wise function in the heavy-quark limit is also discussed. C1 Univ Fed Sao Joao del Rei, Dept Ciencias Nat, BR-36301160 Sao Joao Del Rei, Brazil. Univ Granada, Dept Fis Atom Mol & Nucl, E-18071 Granada, Spain. RP Mota, AL, Univ Fed Sao Joao del Rei, Dept Ciencias Nat, BR-36301160 Sao Joao Del Rei, Brazil. EM motaal@ufsj.edu.br NR 20 TC 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PD MAR PY 2007 VL 31 IS 4 BP 711 EP 713 DI 10.1140/epja/i2006-10243-1 PG 3 SC Physics, Nuclear; Physics, Particles & Fields GA 156RR UT ISI:000245667300073 ER PT J AU Diaz-Garcia, JA Gutierrez-Jaimez, R AF Diaz-Garcia, Jose A. Gutierrez-Jaimez, Ramon TI The distribution of residuals from a general elliptical linear model SO JOURNAL OF STATISTICAL PLANNING AND INFERENCE LA English DT Article DE residual; normalized residual; studentized residual; pearson type II distribution; Multivariate t-distribution; elliptical distribution; singular distribution ID REGRESSION AB Given a general linear model of full or less than full rank, we find the distributions of normalized, standardized and studentized (internally and externally studentized) residuals, assuming normal and elliptical distributions. In addition, we propose an alternative approach to the results published by Ellenberg [ 1973, The joint distribution of the standardized least squares residual from general linear regression. J. Amer. Statist. Assoc. 68, 941-943] and Beckman and Trusell [1974, The distribution of an arbitrary studentized residual and effects of updating in multiple regression. J. Amer. Statist. Assoc. 69, 199-20] (c) 2006 Elsevier B.V. All rights reserved. C1 Univ Autonoma Agr Antonio Narro, Dept Stat & Computat, Saltillo, Coahuila, Mexico. Univ Granada, Dept Stat & OR, Granada 18071, Spain. RP Diaz-Garcia, JA, Univ Autonoma Agr Antonio Narro, Dept Stat & Computat, 25315 Buenavista, Saltillo, Coahuila, Mexico. EM jadiaz@uaaan.mx rgjaimez@goliat.ugr.es NR 14 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3758 J9 J STATIST PLAN INFER JI J. Stat. Plan. Infer. PD JUL 1 PY 2007 VL 137 IS 7 BP 2347 EP 2354 DI 10.1016/j.jspi.2006.08.003 PG 8 SC Statistics & Probability GA 159AX UT ISI:000245838900024 ER PT J AU Naumis, GG Samaniego-Steta, F del Castillo-Mussot, M Vazquez, GJ AF Naumis, Gerardo G. Samaniego-Steta, F. del Castillo-Mussot, M. Vazquez, G. J. TI Three-body interactions in sociophysics and their role in coalition forming SO PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS LA English DT Article DE sociophysics; coalitions; conflicts; three-body interaction ID LANDSCAPE THEORY; AGGREGATION AB An study of the effects of three-body interactions in the process of coalition formation is presented. In particular, we modify a spin glass model of bimodal propensities and also a Potts model in order to include a particular three-body Hamiltonian that reproduces the main features of the required interactions. The model can be used to study conflicts, political struggles, political parties, social networks, wars and organizational structures. As an application, we analyze a simplified model of the Iraq war. (c) 2007 Elsevier B.V. All rights reserved. C1 Univ Nacl Autonoma Mexico, Inst Fis, Dept Quim Fis, Mexico City 01000, DF, Mexico. Univ Granada, Inst Carlos I Theoret & Computat Phys, Granada, Spain. Univ Granada, Dept Electromagnetismo & Fis Mat, Granada, Spain. RP Naumis, GG, Univ Nacl Autonoma Mexico, Inst Fis, Dept Quim Fis, Apdo Postal 20-364, Mexico City 01000, DF, Mexico. EM naumis@fisica.unam.mx NR 16 TC 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4371 J9 PHYSICA A JI Physica A PD JUN 1 PY 2007 VL 379 IS 1 BP 226 EP 234 DI 10.1016/j.physa.2006.12.046 PG 9 SC Physics, Multidisciplinary GA 160RT UT ISI:000245960700020 ER PT J AU Acosta, MD Lourenco, ML AF Acosta, Maria D. Lourenco, Mary Lilian TI Shilov boundary for holomorphic functions on some classical Banach spaces SO STUDIA MATHEMATICA LA English DT Article DE holomorphic function; boundary; Shilov boundary; peak point; strong peak point ID INFINITE DIMENSIONS; ALGEBRAS; C(K) AB Let A infinity(B-x) be the Banach space of all bounded and continuous functions on the closed unit ball B-x of a complex Banach space X and holomorphic on the open unit ball, with sup norm, and let A(u)(B-x) be the subspace of A infinity(B-x) of those functions which are uniformly continuous on B-x. A subset B subset of B-x is a boundary for A infinity(B-x) if parallel to f parallel to = SUPx is an element of B vertical bar f(x)vertical bar for every f is an element of A infinity(B-x). We prove that for X = d(w, 1) (the Lorentz sequence space) and X = C-1(H), the trace class operators, there is a minimal closed boundary for A infinity(B-x). On the other hand, for X = S, the Schreier space, and X = K(l(p), l(q)) (1 <= p < q < infinity), there is no minimal closed boundary for the corresponding spaces of holomorphic functions. C1 Univ Granada, Dept Anal Matemat, Fac Ciencias, E-18071 Granada, Spain. Univ Sao Paulo, Dept Matemat & Estatist, BR-05311970 Sao Paulo, Brazil. RP Acosta, MD, Univ Granada, Dept Anal Matemat, Fac Ciencias, E-18071 Granada, Spain. EM dacosta@ugr.es mllouren@ime.usp.br NR 16 TC 0 PU POLISH ACAD SCIENCES INST MATHEMATICS PI WARSAW 10 PA SNIADECKICH 8, PO BOX 21,, 00-956 WARSAW 10, POLAND SN 0039-3223 J9 STUD MATH JI Studia Math. PY 2007 VL 179 IS 1 BP 27 EP 39 PG 13 SC Mathematics GA 161DX UT ISI:000245995600003 ER PT J AU Nunez, D Torres, PJ AF Nunez, Daniel Torres, Pedro J. TI KAM dynamics and stabilization of a particle sliding over a periodically driven curve SO APPLIED MATHEMATICS LETTERS LA English DT Article DE KAM dynamics; Lyapunov stability; twist condition ID INVERTED PENDULUM; STABILITY; EQUILIBRIUM AB The dynamics of a bead sliding without friction along a periodically pulsating wire is under consideration. If the arc length of the wire is taken as the relevant coordinate, the motion of the bead is described by a periodic newtonian equation. Sufficient conditions are derived assuring.that a given equilibrium is of twist type, a property that implies its nonlinear stability as well as a KAM scenario around it. Special attention is paid to the stabilization of unstable equilibria, in parallel with the stabilization of the inverted pendulum. (c) 2006 Elsevier Ltd. All rights reserved. C1 Univ Granada, Dept Matemat Aplicada, E-18071 Granada, Spain. Univ Zulia, Dept Matemat & Computac, Maracaibo 4001, Venezuela. RP Torres, PJ, Univ Granada, Dept Matemat Aplicada, Av Fuentenueva SN, E-18071 Granada, Spain. EM ptorres@ugr.es NR 13 TC 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0893-9659 J9 APPL MATH LETT JI Appl. Math. Lett. PD JUN PY 2007 VL 20 IS 6 BP 610 EP 615 DI 10.1016/j.aml.2006.05.023 PG 6 SC Mathematics, Applied GA 162BT UT ISI:000246062200003 ER PT J AU Fernandez-Toledano, JC Moncho-Jorda, A Martinez-Lopez, F Gonzalez, AE Hidalgo-Alvarez, R AF Fernandez-Toledano, J. C. Moncho-Jorda, A. Martinez-Lopez, F. Gonzalez, A. E. Hidalgo-Alvarez, R. TI Two-dimensional colloidal aggregation mediated by the range of repulsive interactions SO PHYSICAL REVIEW E LA English DT Article ID DIFFUSION-LIMITED AGGREGATION; CLUSTER-CLUSTER AGGREGATION; SIZE DISTRIBUTION; KINETICS; SYSTEMS; FRAGMENTATION; SIMULATIONS; TRANSITION; MODELS; RLCA AB We study the effect of the interaction's range on the structural and kinetic properties of a computer-simulated two-dimensional aggregating colloidal system. For this purpose, we considered that the particles of the system interact through a repulsive Yukawa potential which depends on two parameters: the value of the interaction potential between particles in contact V-0 and the range of the interaction kappa d. We observed that the increase of the interaction range or V-0 provokes the arrangement of the small aggregates in linear structures. The repulsive interactions have also a strong influence on the kinetic behavior of the coagulation process. Indeed, they induce the formation of three different time-separated aggregation regimes. In the first regime (at early states) the aggregation is dominated by the range of the repulsive forces, and the cluster-cluster repulsion increases with the cluster size. The second regime (at intermediate times) is reached when the average cluster size is larger than the interaction range. Here, the cluster-cluster repulsions do not grow anymore with the cluster size, so the probability of overcoming the repulsive barrier is the same for all clusters. This corresponds with the so-called reaction-limited-cluster-aggregation regime, where more than one collision between the clusters is needed to form a bond. The third aggregation regime is found at long aggregation times. In this region the coagulation is mainly determined by the diffusion time and the kinetics becomes diffusion controlled. A physical interpretation for the transition between chain structures and the typical fractals aggregates from the point of view of the range of the interactions is discussed. Moreover, a method has been developed in order to obtain the effect of the interactions with a non-negligible range over the aggregation rates directly from the simulations. The relation between these different regions with the parameters of the interaction potential V-0 and kappa d is analyzed. C1 Univ Granada, Fac Ciencias, Dept Fis Aplicada, Grp Fis Fluidos & Biocolodies, E-18071 Granada, Spain. Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Cuernavaca 62251, Morelos, Mexico. RP Fernandez-Toledano, JC, Univ Granada, Fac Ciencias, Dept Fis Aplicada, Grp Fis Fluidos & Biocolodies, Campus Fuentenueva S-N, E-18071 Granada, Spain. NR 41 TC 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD APR PY 2007 VL 75 IS 4 PN Part 1 AR 041408 DI 10.1103/PhysRevE.75.041408 PG 11 SC Physics, Fluids & Plasmas; Physics, Mathematical GA 162GD UT ISI:000246073900053 ER PT J AU Bouza, PJ Simon, M Aguilar, J del Valle, H Rostagno, M AF Bouza, P. J. Simon, M. Aguilar, J. del Valle, H. Rostagno, M. TI Fibrous-clay mineral formation and soil evolution in Aridisols of northeastern Patagonia, Argentina SO GEODERMA LA English DT Article DE palygorskite; sepiolite; fluorite; soil genesis; calcic and petrocalcic horizons; Chubut province of Argentina ID PEDOGENIC PALYGORSKITE; GENESIS; VALLEY; GEOCHEMISTRY; CARBONATES; SEPIOLITE; DEPOSITS; ORIGINS; AFRICA; INDIA AB Recent studies of soil-landscape relationships in northeastern Patagonia identified fibrous-clay minerals in calcic and petrocalcic horizons developed on old fluvio-glacial plains called '' Rodados Patagonicos '' (RP). The objectives of this study were: i) to evaluate the occurrence of fibrous-clay minerals in the and soil environment, and ii) to establish the relationship between the soil properties and degree of the calcic horizon development, including the age of the soils containing fibrous-clay minerals in extra-Andean Patagonia. The soil studied were Calciargids, Natrigypsids, and Petrocalcids, located at elevations of 50, 70, and 130 in a.s.l., respectively. The soils are polygenetic, where the clay mineralogy is related to the age of the pedogenetic periods that affected the formation of geomorphic surfaces. In the surface horizons, illite proved to be the dominant clay mineral and was slightly altered to interstratified illite-smectite and smectite. An older pedogenic episode was identified in argillic and calcic horizons, in which smectite was prevalent. The following soil-formation period was recorded in calcic and calcic-gypsic horizons appearing in the upper limit of the RP. In these horizons, palygorskite is the dominant-clay mineral. Pedogenetic carbonate was qualified as low-Mg calcite, indicating that during its precipitation, the Mg2+ activity increased in the soil solution, favoring the smectite palygorskite transformation. The soil environment, favorable for this transformation, was the textural transition between the fine materials of sub-surface horizons and the coarsest deposit of RP, where temporary waterlogging occurred. The petrocalcic horizons, and their re-transported fragments, represent the oldest pedogenetic period, where sepiolite was the dominant clay mineral. During the calcretization processes, the sepiolite was precipitated from the soil solution following the fort-nation of palygorskite. Fluorite was identified in the petrocalcic horizon, and its association with calcite and sepiolite indicated a successive precipitation of these minerals under alkaline conditions during evaporation processes. (c) 2007 Elsevier B.V. All rights reserved. C1 Consejo Nacl Invest Cient & Tecn, Ctr Nacl Patagonio, Chubut, Argentina. Univ Almeria, Dept Edafol, EPS, Almeria 04120, Spain. Univ Granada, Fac Ciencias, Dept Edafol & Qui,Agr, Granada 18002, Spain. RP Bouza, PJ, Consejo Nacl Invest Cient & Tecn, Ctr Nacl Patagonio, Avd Brown S-N,9120, Chubut, Argentina. EM bouza@cenpat.edu.ar NR 56 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0016-7061 J9 GEODERMA JI Geoderma PD APR 15 PY 2007 VL 139 IS 1-2 BP 38 EP 50 DI 10.1016/j.geoderma.2007.01.001 PG 13 SC Soil Science GA 162IO UT ISI:000246080600004 ER PT J AU de Leon, J Susce, MT Johnson, M Hardin, M Pointer, L Ruano, G Windemuth, A Diaz, FJ AF de Leon, Jose Susce, Margaret T. Johnson, Maria Hardin, Mike Pointer, Lana Ruano, Gualberto Windemuth, Andreas Diaz, Francisco J. TI A clinical study of the association of antipsychotics with hyperlipidemia SO SCHIZOPHRENIA RESEARCH LA English DT Article DE antipsychotics; olanzapine; quetiapine; lipids; cholesterol; triglycerides; metabolic syndrome; obesity; relative percentiles; effect sizes ID WEIGHT-GAIN; SCHIZOPHRENIA; OLANZAPINE; OBESITY AB Following a prior Kentucky clinical practice study on metabolic syndrome, serum glucose and lipid levels were used in a new sample to determine whether after correcting for confounding factors, olanzapine hyperlipidemia risk may be higher under naturalistic non-randomized treatment. Serum glucose, total cholesterol, HDL cholesterol and triglyceride levels were assessed in 360 patients with severe mental illnesses. The initial goal was to focus on olanzapine lipid profiles, but visual data inspection indicated that quetiapine needed attention as well. Patients were divided into 3 groups: 57 (16%) on olanzapine, 105 (29%) on quetiapine, and 198 (55%) on other antipsychotics (risperidone, ziprasidone, aripiprazole or typicals). HDL and glucose levels were not significantly different across the three antipsychotic groups. When compared with other antipsychotics, olanzapine patients had a borderline significantly higher mean total serum cholesterol level (178 vs. 192 mg/dl, p=0.06) and mean triglyceride level (172 vs. 202 mg/dl, p=0.06). These differences became significant (p=0.006 and 0.03) after correcting for confounders. Quetiapine appeared overprescribed in patients with metabolic syndrome complications. When compared with other antipsychotics, quetiapine patients had a significantly higher mean total serum cholesterol level (178 vs. 194 mg/dl, p=0.004) and mean triglyceride level (172 vs. 225 mg/dl, p<0.001). These differences were significant (p=0.02 and <0.001) after correcting for confounders. This study is consistent with emerging literature that suggests that some antipsychotics may have direct and immediate effects on lipid levels beyond obesity effects. The effect sizes of olanzapine and quetiapine on hyperlipidemia were about 0.40 in this naturalistic study. (c) 2007 Elsevier B.V. All rights reserved. C1 Eastern State Hosp, Mental Hlth Res Ctr, Univ Kentucky, Lexington, KY 40508 USA. Western State Hosp, Univ Kentucky, Mental Hlth Res Ctr, Hopkinsville, KY USA. Genomas Inc, Hartford, CT 06106 USA. Univ Granada, Dept Psychiat, Granada, Spain. Univ Granada, Inst Neurosci, Granada, Spain. Univ Nacl, Dept Stat, Medellin, Colombia. RP de Leon, J, Eastern State Hosp, Mental Hlth Res Ctr, Univ Kentucky, 627 W 4th St, Lexington, KY 40508 USA. EM jdeleon@uky.edu NR 19 TC 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-9964 J9 SCHIZOPHR RES JI Schizophr. Res. PD MAY PY 2007 VL 92 IS 1-3 BP 95 EP 102 DI 10.1016/j.schres.2007.01.015 PG 8 SC Psychiatry GA 167CZ UT ISI:000246429800012 ER PT J AU Odriozola, G Schmitt, A Callejas-Fernandez, J Hidalgo-Alvarez, R AF Odriozola, G. Schmitt, A. Callejas-Fernandez, J. Hidalgo-Alvarez, R. TI Aggregation kinetics of latex microspheres in alcohol-water media SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article DE aggregation kinetics; binary mixtures; polymer colloids; colloidal stability; alcohol-water mixtures ID ETHYLENE GLYCOL MIXTURES; POLYSTYRENE LATEX; ELECTROPHORETIC MOBILITY; COLLOID STABILITY; LIGHT-SCATTERING; SILVER-IODIDE; DOUBLE-LAYER; SURFACE; SOLVENT; SILICA AB We report zeta potential and aggregation kinetics data on colloidal latex particles immersed in water-alcohol media. Zeta potential values show absolute maxima for volume fractions of alcohol of 0. 10 and 0.05 for ethanol and I-propanol, respectively. For methanol, no maximum of the absolute value of the zeta potential was found. Aggregation kinetics was studied by means of a single-cluster optical sizing equipment and for alcohol volume fractions ranging from 0 to 0. 1. The aggregation processes are induced by adding different potassium bromide concentrations to the samples. We expected to find a slowdown of the overall aggregation kinetics for ethanol and 1-propanol, and no significant effect for methanol, as compared with pure water data. That is, we expected the zeta potential to govern the overall aggregation rate. However, we obtained a general enhancement of the aggregation kinetics for methanol and 1-propanol and a general slowdown of the aggregation rate for ethanol. In addition, aggregation data under ethanol show a slower kinetics for large electrolyte concentration than that obtained for intermediate electrolyte concentration. We think that these anomalous behaviors are linked to layering, changes in hydrophobicity of particle surfaces due to alcohol adsorption, complex ion-water-alcohol-surface structuring, and competition between alcohol-surface adsorption and alcohol-alcohol clustering. (C) 2007 Elsevier Inc. All rights reserved. C1 Univ Granada, Dept Fis Aplicada, Grp Fis Fluidos & Biocoloides, E-18071 Granada, Spain. Inst Mexicano Petr, Programa Ingn Mol, E-07730 Mexico City, DF, Mexico. RP Hidalgo-Alvarez, R, Univ Granada, Dept Fis Aplicada, Grp Fis Fluidos & Biocoloides, Campus Fuentenueva, E-18071 Granada, Spain. EM rhidalgo@ugr.es NR 38 TC 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9797 J9 J COLLOID INTERFACE SCI JI J. Colloid Interface Sci. PD JUN 15 PY 2007 VL 310 IS 2 BP 471 EP 480 DI 10.1016/j.jcis.2007.02.018 PG 10 SC Chemistry, Physical GA 167NZ UT ISI:000246459700017 ER PT J AU Tejera, NA Rodes, R Ortega, E Campos, R Lluch, C AF Tejera, Noel A. Rodes, Rosa Ortega, Eduardo Campos, Rosario Lluch, Carmen TI Comparative analysis of physiological characteristics and yield components in sugarcane cultivars SO FIELD CROPS RESEARCH LA English DT Article DE growth analysis; partitioning; Saccharum spp.; sugarcane; yield components ID DRY-MATTER ACCUMULATION; SUCROSE; CANE; RESPIRATION; STORAGE; GROWTH; WHEAT; STEM; TRANSLOCATION; AUSTRALIA AB Sugarcane in an important crop due to the economic value of its products. Physiological characteristics and yield components of sugarcane were studied in three field-grown sugarcane cultivars B 63118, POJ 2878 and Ja 60-5. Three growth stages were identified: formative phase (until 140 DAP), grand growth (140-300 DAP) and maturity (after 300 DAP). Results indicated that cultivars showed contrasting yield mainly after 300 DAR At ripening, the most productive cultivar (Ja 60-5) achieved higher leaf area, an optimum leaf area index for light interception, a high and stable net assimilation rate and an elevated leaf area and biomass duration. In addition, this cultivar showed the higher density and lower area of leaf sieve elements as compared with other, which could influence the high translocation rate (1.85 cm min(-1)) at 8 MAP. The higher efficiency of this process in Ja 60-5 might also be supported by a higher (15-25%) apparent free space of stem parenchyma as compared with POJ 2878 and B 63118. Our results suggest that Ja 60-5 reduced carbon partitioned to foliar respiration which led to a higher partitioning of sucrose to stems evidenced by a higher Pol%. (C) 2007 Elsevier B.V. All rights reserved. C1 Univ Granada, Fac Ciencias, Dept Fisiol Vegetal, E-18071 Granada, Spain. Univ La Habana, Dept Biol Vegetal, Havana, Cuba. RP Tejera, NA, Univ Granada, Fac Ciencias, Dept Fisiol Vegetal, Campus Fuentenueva S-N, E-18071 Granada, Spain. EM natejera@ugr.es NR 52 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4290 J9 FIELD CROP RES JI Field Crop. Res. PD APR 30 PY 2007 VL 102 IS 1 BP 64 EP 72 DI 10.1016/j.fcr.2007.02.002 PG 9 SC Agronomy GA 168OL UT ISI:000246533800008 ER PT J AU Marco, JL Amariles, P Bosca, B Castello, A AF Marco, Jose Luis Amariles, Pedro Bosca, Beatriz Castello, Ana TI Risk factors associated with NSAID-induced upper gastrointestinal bleeding resulting in hospital admissions: A cross-sectional, retrospective, case series analysis analysis in Valencia, Spain SO CURRENT THERAPEUTIC RESEARCH-CLINICAL AND EXPERIMENTAL LA English DT Article DE nonsteroidal anti-inflammatory drugs; upper gastrointestinal bleeding; hospital admissions; elderly; risk factors ID NONSTEROIDAL ANTIINFLAMMATORY DRUGS; PEPTIC-ULCER; 5 STRATEGIES; EVENTS; HEMORRHAGE; PREVENTION; MORTALITY; TOXICITY; DISEASE; ASPIRIN AB Background: NSAIDs are a significant cause of drug-related hospital admissions and deaths. The therapeutic effects of NSAIDs have been associated with the risk for developing adverse events, mainly in the gastrointestinal tract. Objectives: The focus of this study was to identify the most common risk factors associated with NSAID-induced upper gastrointestinal bleeding (UGIB) resulting in hospital admissions. A secondary end point was the relationship between use of gastroprotective treatment and relevant risk factors to NSAID-induced UGIB in the selected population. Methods: This study was a cross-sectional, retrospective, case-series analysis of NSAID-induced UGIB resulting in hospital admission to the Requena, General Hospital, Valencia, Spain, occurring from 1997 to 2005. International Classification of Diseases, Ninth Revision, Clinical Modification codes were used to identify UGIB admissions associated with NSAIDs. To estimate the probability of association between UGIB and the use of NSAIDs, the Naranjo adverse drug reaction probability was used. Patients were categorized as high-risk to develop UGIB if they met >= 1 of the following risk criteria (relevant risk factors): aged >= 65 years (age risk factor); peptic ulcer disease or NSAID gastropathy occurring in the year before their hospital admission (history risk factor); and concomitant use of other NSAIDs, systemic corticoids, oral anticoagulants, or platelet aggregation inhibitors (concomitant medication risk factor). Patients were categorized as candidates to use gastroprotections if they met >= 1 of the relevant risk factors. Patients were categorized as users of gastroprotective treatment if they used proton pump inhibitors, histamine H-2-receptor antagonists, or misoprostol at hospital admission. Results: This study comprised 209 cases of NSAID-induced UGIB (129 men, 80 women; mean [SD] age, 71.5 [13.8] years; 128 [61.2%] receiving acetyl salicylic acid [ASA], with 72 [34.4%] receiving low-dose [80-325 mg] ASA). Prevalence of relevant risk factors for UGIB were as follows: age, 158 (75.6%) patients; history, 37 (17.7%); and concomitant medication, 35 (16.7%). One hundred seventy-eight (85.2%) patients met >= 1 criterion for using a gastroprotective agent; 28 (15.6%) were actually using one. Only the history risk factor was significantly associated with the use of gastroprotective treatment (P = 0.007; odds ratio 3.17). Conclusions: In this study of NSAID-induced UGIB resulting in hospital admission, age was the most common risk factor. However, this criterion was not associated with the use of gastroprotective agents. A large number of cases were associated with the use of ASA, primarily in those receiving low doses. A significant lack of gastroprotective agent use was observed in patients who met the criteria to use them. (Curr Ther Res Clin Exp. 2007;68:107-119) Copyright (C) 2007 Excerpta Medica, Inc. C1 Requena Gen Hosp, Serv Pharm, Valencia 46340, Spain. Univ Antioquia, Fac Pharmaceut Chem, Medellin, Colombia. Univ Granada, Res Grp Pharmaceut Care, Granada, Spain. Requena Gen Hosp, Emergency Dept, Valencia 46340, Spain. RP Marco, JL, Requena Gen Hosp, Serv Pharm, Paraje Casa Blanca S-N, Valencia 46340, Spain. EM marco_jlu@gva.es NR 32 TC 0 PU ELSEVIER PI BRIDGEWATER PA 685 ROUTE 202-206, BRIDGEWATER, NJ 08807 USA SN 0011-393X J9 CURR THER RES JI Curr. Ther. Res.-Clin. Exp. PD MAR-APR PY 2007 VL 68 IS 2 BP 107 EP 119 DI 10.1016/j.curtheres.2007.03.003 PG 13 SC Medicine, Research & Experimental; Pharmacology & Pharmacy GA 168ST UT ISI:000246545000004 ER PT J AU Aledo, JA Chaves, RMB Galvez, JA AF Aledo, Juan A. Chaves, Rosa M. B. Galvez, Jose A. TI The Cauchy problem for improper affine spheres and the Hessian one equation SO TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY LA English DT Article ID HYPERBOLIC 3-SPACE; BJORLING PROBLEM; FLAT SURFACES; HYPERSURFACES; SPACE AB We give a conformal representation for improper a. ne spheres which is used to solve the Cauchy problem for the Hessian one equation. With this representation, we characterize the geodesics of an improper a. ne sphere, study its symmetries and classify the helicoidal ones. Finally, we obtain the complete classification of the isolated singularities of the Hessian one MongeAmpere equation. C1 Univ Castilla La Mancha, Dept Matemat, Albacete 02071, Spain. Univ Sao Paulo, Inst Matemat & Estatist, BR-05315970 Sao Paulo, Brazil. Univ Granada, Dept Geometr & Topol, E-18071 Granada, Spain. RP Aledo, JA, Univ Castilla La Mancha, Dept Matemat, Albacete 02071, Spain. EM juanangel.aledo@uclm.es rosab@ime.usp.br jagalvez@ugr.es NR 22 TC 0 PU AMER MATHEMATICAL SOC PI PROVIDENCE PA 201 CHARLES ST, PROVIDENCE, RI 02940-2213 USA SN 0002-9947 J9 TRANS AMER MATH SOC JI Trans. Am. Math. Soc. PY 2007 VL 359 IS 9 BP 4183 EP 4208 PG 26 SC Mathematics GA 169SS UT ISI:000246612600006 ER PT J AU Sauro, S Pashley, DH Montanari, M Chersoni, S Carvalho, RM Toledano, M Osorio, R Tay, FR Prati, C AF Sauro, Salvatore Pashley, David H. Montanari, Marco Chersoni, Stefano Carvalho, Ricardo M. Toledano, Manuel Osorio, Raquel Tay, Franklin R. Prati, Carlo TI Effect of simulated pulpal pressure on dentin permeability and adhesion of self-etch adhesives SO DENTAL MATERIALS LA English DT Article DE permeability; water uptake; hydrophilic polymers; hybrid layer; dentin bonding systems; microtensile bond strength; water droplets; SEM ID MICROTENSILE BOND STRENGTH; SINGLE-STEP; IN-VIVO; COMPOSITE RESTORATIONS; TECHNIQUE SENSITIVITY; RESIN HYDROPHILICITY; PHASE-SEPARATION; WATER STORAGE; HYBRID LAYER; FLUID AB Objectives. Dentin bonds made with one-bottle etch-and-rinse and self-etch adhesives are affected by the formation of interfacial blisters, porosities and deterioration. The first objective of this study was to evaluate the fluid flow through resin-dentin interfaces created by self-etching adhesives applied to deep dentin using a replica technique and by directly measuring dentin permeability (P). The second objective was to examine the effect of intrapulpal pressure on the microtensile bond strength of these adhesives. Methods. A fluid-transport model was used to measure the fluid permeability (%P) through different adhesives. Impressions of bonded dentin were taken with a polyvinylsiloxane impression material to monitor fluid transudation from the surface of the adhesive. Positive replicas were fabricated for SEM examination. Two groups of resin-bonded specimens (pulpal pressure versus no pulpal pressure) were created for microtensile bond strength evaluation. Adhesive application was performed under 0 cm H2O. Pulpal pressure group was submitted to 20 cm H2O of pulpal pressure during build-up procedures. Results. Clearfil Protect Bond exhibited the lowest permeability and fewest numbers of fluid droplets over the surface of the bonded dentin. G-Bond and Clearfil-S3 Bond were more permeable than Clearfil Protect Bond. One Up Bond F was the most permeable adhesive. A highly significant correlation was observed between the relative permeability of these adhesives (%P) and the number of fluid droplets on the adhesive surfaces. The application of pulpal pressure significantly reduced bond strength. Significance. Resin-dentin bonds created by contemporary self-etch adhesives are susceptible to fluid permeation induced by pulpal pressure. HEMA-based adhesives showed the largest reductions in bond strengths after pulpal pressure application. (C) 2006 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved. C1 Alma Mater Studiorum Univ Bologna, Dept Oral Sci, Bologna, Italy. Med Coll Georgia, Sch Dent, Augusta, GA 30912 USA. Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Sao Paulo, Brazil. Univ Granada, Dept Dent Mat, Granada, Spain. Univ Hong Kong, Prince Dent Hosp, Fac Dent, Hong Kong, Hong Kong, Peoples R China. Kings Coll London, Guys Kings & St Thomas Dent Inst, Dept Biomat, London, England. RP Sauro, S, Alma Mater Studiorum Univ Bologna, Dept Oral Sci, Bologna, Italy. EM salvatore.sauro@studio.unibo.it NR 44 TC 5 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0109-5641 J9 DENT MATER JI Dent. Mater. PD JUN PY 2007 VL 23 IS 6 BP 705 EP 713 DI 10.1016/j.dental.2006.06.010 PG 9 SC Dentistry, Oral Surgery & Medicine; Materials Science, Biomaterials GA 170AG UT ISI:000246632600007 ER PT J AU Bensusan, H de Pinedo, M AF Bensusan, Hilan de Pinedo, Manuel TI When my own beliefs are not first-personal enough (Richard Moran) SO THEORIA-REVISTA DE TEORIA HISTORIA Y FUNDAMENTOS DE LA CIENCIA LA English DT Article DE Richard Moran; Moore's paradox; self-knowledge AB Richard Moran his argued, convincingly, in favour of the idea that there must be more than one path to access our own mental contents. The existence of those routes, one first-personal-through avowal-the other third-personal -no different to the one used to ascribe mental states to other people and to interpret their actions- is intimately connected to our capacity to respond to norms. Moran's account allows for conflicts between first personal and third personal authorities over my own beliefs; this enable some instances of Moore-paradoxical cases to be meaningful. In this paper we reflect on the consequences of this view for the acquisition of beliefs, and argue that, as in the moral case, excessive concentration on a third-personal understanding of thought undermines the very idea of being directed to the world and of being capable to fully own our own beliefs. We suggest that maybe too much attention to epistemic virtues or to justification is misdirected and could produce beliefs that are themselves not first-personal enough. C1 Univ Brasilia, Dept Filosofia, BR-70910900 Brasilia, DF, Brazil. Univ Granada, Dept Filosofia, Granada 18011, Spain. RP Bensusan, H, Univ Brasilia, Dept Filosofia, Campus Univ,ICC Ala Norte Subsolo, BR-70910900 Brasilia, DF, Brazil. EM hilanb@unb.br pinedo@ugr.es NR 7 TC 0 PU SERVICIO EDITORIAL UNIVERSIDAD DEL PAIS VASCO PI LEOIA PA APARTDO 1397, E 48080 LEOIA, SPAIN SN 0495-4548 J9 THEORIA-SPAIN JI Theoria PD JAN PY 2007 VL 22 IS 1 BP 35 EP 41 PG 7 SC History & Philosophy Of Science GA 171UC UT ISI:000246759900004 ER PT J AU de Leon, J Susce, MT Pan, RM Wedlund, PJ Orrego, ML Diaz, FJ AF de Leon, J. Susce, M. T. Pan, R.-M. Wedlund, P. J. Orrego, M. L. Diaz, F. J. TI A study of genetic (CYP2D6 and ABCB1) and environmental (drug inhibitors and inducers) variables that may influence plasma risperidone levels SO PHARMACOPSYCHIATRY LA English DT Article DE risperidone; CYP2D6; CYP3A5; ABCB1; inhibitor; inducer ID CYTOCHROMES P450 2D6; P-GLYCOPROTEIN; PHARMACOKINETICS; 9-HYDROXYRISPERIDONE; POLYMORPHISMS; ANTIPSYCHOTICS; TRANSPORTER; METABOLISM; PSYCHIATRY; PHENOTYPE AB Risperidone (R) is metabolized to 9-hydroxyrisperidone (9-OHR) by cytochrome P450 2D6 (CYP2D6). The main objective of this naturalistic study was to investigate the variables associated with two plasma ratios: the plasma R:9-OHR concentration ratio and the total concentration-to-dose (C:D) ratio. These ratios were studied as continuous measures by linear regression analyses and as three dichotomous variables in logistic regression analyses: R:9-OHR ratio > 1 (indicative of lack of CYP2D6 activity), C:D ratio > 14 (indicative of diminished R elimination), and C:D ratio < 3.5 (indicative of increased R elimination). Plasma R levels; genotypes for CYP2D6, CYP3A5; and ABCB1 genes, and co-medication, including CYP inhibitors and CYP3A inducers, were studied in 277 patients. Almost all CYP2D6 poor metabolizers (PMs) had an inverted R:9-OHR ratio (> 1). Having a CYP2D6 PM phenotype was strongly associated with a C:D ratio > 14 (OR=8.2; 95% confidence interval [CI]=2.0-32.7), indicating diminished R elimination. CYP2D6 ultrarapid metabolizers (UMs) did not exhibit an increased R elimination. Some ABCB1 (or MDR1) variants were significantly associated with increased R:9-OHR ratios and decreased C:D ratios, but the results were neither consistent nor robust. Taking CYP inhibitors was significantly associated with a C:D ratio > 14 (OR=3.8; CI=1.7-8.7) and with an inverted R:9-OHR ratio. Taking CYP3A inducers was significantly associated with a C: D ratio < 3.5 (OR=41.8; CI=12.7-138), indicating increased R elimination. Female gender and old age appeared to be associated with a lower R elimination. Our study indicated that the CYP2D6 PM phenotype may have a major role in personalizing R doses, whereas the CYP3A5 PM phenotype probably has no role. CYP inducers and inhibitors appear to be relevant to R dosing. New studies are needed, particularly to further assess the role of the CYP2D6 UM phenotype and ABCB1 variants in R pharmacokinetics. C1 Univ Kentucky, Eastern State Hosp, Mental Hlth Res Ctr, Lexington, KY 40508 USA. UK Coll Med, Lexington, KY USA. UK Coll Pharm, Lexington, KY USA. Univ Granada, Dept Psychiat, E-18071 Granada, Spain. Univ Granada, Inst Neurosci, E-18071 Granada, Spain. Inst Dept Deportes Antioquia, Medellin, Colombia. Univ Nacl, Dept Stat, Medellin, Colombia. RP de Leon, J, Univ Kentucky, Eastern State Hosp, Mental Hlth Res Ctr, 627 W 4th St, Lexington, KY 40508 USA. EM jdeleon@uky.edu NR 31 TC 1 PU GEORG THIEME VERLAG KG PI STUTTGART PA RUDIGERSTR 14, D-70469 STUTTGART, GERMANY SN 0176-3679 J9 PHARMACOPSYCHIATRY JI Pharmacopsychiatry PD MAY PY 2007 VL 40 IS 3 BP 93 EP 102 DI 10.1055/s-2007-973836 PG 10 SC Pharmacology & Pharmacy; Psychiatry GA 176KA UT ISI:000247082500002 ER PT J AU Radovic, I Monticelli, F Goracci, C Cury, AH Coniglio, I Vulicevic, ZR Garcia-Godoy, F Ferrari, M AF Radovic, Ivana Monticelli, Francesca Goracci, Cecilia Cury, Alvaro Hafiz Coniglio, Ivanovic Vulicevic, Zoran R. Garcia-Godoy, Franklin Ferrari, Marco TI The effect of sandblasting on adhesion of a dual-cured resin composite to methacrylic fiber posts: Microtensile bond strength and SEM evaluation SO JOURNAL OF DENTISTRY LA English DT Article DE fiber posts; microtensile bond strength; sandblasting; silane coupling ID ENDODONTICALLY TREATED TEETH; GLASS-FIBER; IN-VITRO; FRACTURE-RESISTANCE; PREFABRICATED POSTS; SURFACE-TREATMENT; CORE SYSTEMS; RESTORATIONS; RETENTION; FAILURE AB Objectives: To evaluate the influence of different surface treatments on the microtensile bond strength of a dual-cured resin composite to fiber posts. Methods: Thirty-two glass methacrylate-based fiber posts (GC Corp.) were used in the study. Posts were divided into two groups, according to the surface pretreatment performed. Group 1: sandblasting (Rocatec-Pre, 3 M ESPE). Group 2: no pretreatment. In each of the two groups posts received three types of additional "chair-side" treatments. (1) Silane application (Monobond S, Ivoclar Vivadent); (2) adhesive application (Unifil Core self-etching bond, GC); (3) no treatment was performed. A dual-cured resin composite (Unifil Core, GC) was applied on the posts to produce cylindrical specimens. Specimens were cut to obtain microtensile sticks that were loaded in tension at a cross-head speed of 0.5 mm/min until failure. The morphology of the post/composite interface and the post surface morphology were evaluated under SEM. Statistical analysis was performed with two-way ANOVA and Tukey test for post hoc comparisons (p < 0.05). Results: Post surface pretreatment did not prove to be a significant factor in post-composite bond strength (p = 0.08), whereas "chair-side" treatment modalities and the interaction between pretreatment and treatment showed a significant influence on bond strength (p < 0.001). When no "chair-side" treatment was performed, bond strength was significantly higher on sandblasted posts. Additional adhesive application resulted in significantly lower bond strength on sandblasted posts. When no pretreatment was performed, silane application resulted in higher bond strength than adhesive application. Conclusions: Sandblasting may give an increase in microtensile strength to methacrylate-based glass fiber posts, eliminating the need for additional "chair-side" treatments. Reducing the number of clinical steps could contribute to simplify the clinical procedures. (c) 2007 Elsevier Ltd. All rights reserved. C1 Univ Belgrade, Fac Dent, Clin Pediat & Prevent Dent, Belgrade 11000, Serbia. Univ Siena, Polyclin Le Scotte, Dept Dent Mat & Restorat Dent, I-53100 Siena, Italy. Univ Granada, E-18071 Granada, Spain. Univ Sao Paulo, Bauru Dent Sch, BR-05508 Sao Paulo, Brazil. Nova SE Univ, Coll Dent Med, Biosci Res Ctr, Ft Lauderdale, FL 33328 USA. Nova SE Univ, Coll Dent Med, Biomat Res Ctr, Ft Lauderdale, FL 33328 USA. Nova SE Univ, Coll Dent Med, Clin Res Ctr, Ft Lauderdale, FL 33328 USA. RP Radovic, I, Univ Belgrade, Fac Dent, Clin Pediat & Prevent Dent, Dr Subotica 11, Belgrade 11000, Serbia. EM ivana.radovic@iritel.com NR 45 TC 5 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0300-5712 J9 J DENT JI J. Dent. PD JUN PY 2007 VL 35 IS 6 BP 496 EP 502 DI 10.1016/j.jdent.2007.01.009 PG 7 SC Dentistry, Oral Surgery & Medicine GA 176YC UT ISI:000247119800006 ER PT J AU Amariles, P Giraldo, NA Faus, MJ AF Amariles, Pedro Andres Giraldo, Newar Jose Faus, Maria TI Clinical relevance of drug interactions SO MEDICINA CLINICA LA Spanish DT Review DE drug interactions; pharmacokinetic drug interactions; cytochrome P-450; bioavailability ID ST-JOHNS-WORT; JUICE-FELODIPINE INTERACTION; HUMAN LIVER-MICROSOMES; GRAPEFRUIT JUICE; P-GLYCOPROTEIN; CYTOCHROME-P450 3A; PLASMA-CONCENTRATIONS; ORANGE JUICE; ORAL-CONTRACEPTIVES; PROTEASE INHIBITORS AB The identification, prevention, and solution of drug interactions are a critical aspect to achieved desired pharmacotherapy goals. The purpose of this review was to organize information about drug interactions, and to develop an approach to identify and evaluate drug interactions considered clinically relevant. Data for this review were identified by search of MEDLINE and PubMed and references cited in relevant articles. <> plus <> <> or <> were searched in titles or in abstracts. Only papers published in English and Spanish from January of 1996 to June of 2006 and in humans were reviewed. We reviewed the type and mechanism of drug interactions, and we highlight those associated to changes in the systemic clearance or in the bioavailability. So, we provide an approach to evaluate and use the clinical relevance of drug interactions complemented with a classification based on the severity and probability of its occurrence. C1 Univ Antioquia, Fac Quim Farmaceut, Dept Farmacol & Farm Clin, Medellin 1226, Colombia. Univ Antioquia, Grp Invest Promot & Prevent Farmaceut, Medellin 1226, Colombia. Univ Granada, Grp Invest Atenc Farmaceut, Granada, Spain. Humax Pharmaceut, Programa Atenc Farmaceut, Medellin, Colombia. Univ Granada, Dept Bioquim & Biol Mol, Granada, Spain. RP Amariles, P, Univ Antioquia, Fac Quim Farmaceut, Dept Farmacol & Farm Clin, Medellin 1226, Colombia. EM pamaris@farmacia.udea.edu.co NR 86 TC 2 PU EDICIONES DOYMA S/L PI BARCELONA PA TRAV DE GRACIA 17-21, 08021 BARCELONA, SPAIN SN 0025-7753 J9 MED CLIN JI Med. Clin. PD JUN 2 PY 2007 VL 129 IS 1 BP 27 EP 35 PG 9 SC Medicine, General & Internal GA 179XL UT ISI:000247323700007 ER PT J AU Hernandes, F Lamata, MT Verdegay, JL Yamakami, A AF Hernandes, Fabio Lamata, Maria Teresa Verdegay, Jose Luis Yamakami, Akebo TI The shortest path problem on networks with fuzzy parameters SO FUZZY SETS AND SYSTEMS LA English DT Article DE shortest path problems; Ford-Moore-Bellman algorithm; fuzzy mathematical programming; fuzzy numbers ID NUMBERS; INTERVAL; SUBSETS AB Shortest path problem where the costs have vague values is one of the most studied problems in fuzzy sets and systems area. However, due to its high computational complexity, previously published algorithms present peculiarities and problems that need to be addressed (e.g. they find costs without an existing path, they determine a fuzzy solution set but do not give any guidelines to help the decision-maker choose the best path, they can only be applied in graphs with fuzzy non-negative parameters, etc.). In this paper, one proposes an iterative algorithm that assumes a generic ranking index for comparing the fuzzy numbers involved in the problem, in such a way that each time in which the decision-maker wants to solve a concrete problem (s)he can choose (or propose) the ranking index that best suits that problem. This algorithm, that solves the above remarked drawbacks, is based on the Ford-Moore-Bellman algorithm for classical graphs, and in concrete it can be applied in graphs with negative parameters and it can detect whether there are negative circuits. For the sake of illustrating the performance of the algorithm in the paper, it has been here developed using only certain order relations, but it is not restricted at all to use these comparison relations exclusively. The proposed algorithm is easy of understanding as the theoretical base of a decision support system oriented to solving this kind of problems. (c) 2007 Elsevier B.V. All rights reserved. C1 Univ Estadual Centro Oeste, Dept Ciencia Computacao, BR-85015430 Guarapuava, PR, Brazil. Univ Granada, Dept Ciencias Computac & IA, ETS Ingn Informat, E-18071 Granada, Spain. Univ Estadual Campinas, Dept Telemat, Fac Elect & Comp Engn, BR-13083970 Campinas, SP, Brazil. RP Hernandes, F, Univ Estadual Centro Oeste, Dept Ciencia Computacao, CP 3010, BR-85015430 Guarapuava, PR, Brazil. EM hernandes@unicentro.br mtl@decsai.ugr.es verdegay@decsai.ugr.es akebo@dt.fee.unicamp.br NR 30 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0114 J9 FUZZY SET SYSTEM JI Fuzzy Sets Syst. PD JUL 16 PY 2007 VL 158 IS 14 BP 1561 EP 1570 DI 10.1016/j.fss.2007.02.022 PG 10 SC Computer Science, Theory & Methods; Mathematics, Applied; Statistics & Probability GA 181AW UT ISI:000247410100004 ER PT J AU Burguera-Pascu, M Rodriguez-Archilla, A Baca, P AF Burguera-Pascu, Margarita Rodriguez-Archilla, Alberto Baca, Pilar TI Substantivity of zinc salts used as rinsing solutions and their effect on the inhibition of Streptococcus mutans SO JOURNAL OF TRACE ELEMENTS IN MEDICINE AND BIOLOGY LA English DT Article DE saliva zinc levels; zinc salts; substantivity; S. mutans inhibition ID VOLATILE SULFUR-COMPOUNDS; ORAL CAVITY; CETYLPYRIDINIUM CHLORIDE; PAROTID-SALIVA; PLAQUE; CHLORHEXIDINE; GINGIVITIS; TRICLOSAN; MOUTHRINSES; FLUORIDE AB The antimicrobial efficacy of zinc (Zn) salts (sulfate and acetate) against Streptococcus mutans (S. mutans) present in the oral cavity was tested in this study. The substantivity of Zn salts was assessed by determining the concentration of Zn in whole, unstimulated saliva and by measuring the magnitude of suppression of salivary S. mutans, 2 h after rinsing. The concentration of Zn was measured by atomic absorption spectrometry (AAS) with electrothermal atomization (ET AAS) in saliva sampled before (basal) and 24h after mouth rinsing with different concentrations of Zn (0.1%, 0.5% and 1%) administrated as sulfate and acetate. The estimation of Zn levels in samples collected 30, 60, 90 and 120 min after rinsing was carried out by AAS with flame atomization (FAAS). Immediately after rinsing, the concentration of Zn in saliva sharply increased with respect to the baseline values (0.055 +/- 0.017 mg/L), followed by a sustained decrease, probably due to clearance of salivary flow or swallowing during sampling. A significant reduction (>87%) in the total mean S. mutans counts was found 2 h after rinsing either with sulfate or acetate solutions, as evidence of the high substantivity and effectiveness of the Zn salts tested. A statistically significant inverse relationship (p<0.001 and the Pearson correlation coefficients between -34% and -50%) was found between Zn levels and the respective pH values measured in the samples collected 60 and 120 min after rinsing, sustaining the theory of bacterial glycolysis inhibition. (C) 2007 Elsevier GmbH. All rights reserved. C1 Univ Granada, Sch Dent, Dept Oral Med, Granada, Spain. RP Burguera-Pascu, M, CC Plaza Amer,Piso 1,Local 19,Av Amer, Merida, Venezuela. EM margaburpas@hotmail.com NR 45 TC 0 PU ELSEVIER GMBH, URBAN & FISCHER VERLAG PI JENA PA OFFICE JENA, P O BOX 100537, 07705 JENA, GERMANY SN 0946-672X J9 J TRACE ELEM MED BIOL JI J. Trace Elem. Med. Biol. PY 2007 VL 21 IS 2 BP 92 EP 101 DI 10.1016/j.jtemb.2006.12.003 PG 10 SC Biochemistry & Molecular Biology; Endocrinology & Metabolism GA 181IY UT ISI:000247431600003 ER PT J AU Garcia, MG Tirado-Gonzalez, I Handjiski, B Tometten, M Orsal, AS Hajos, SE Fernandez, N Arck, PC Blois, SM AF Garcia, Mariana G. Tirado-Gonzalez, Irene Handjiski, Bori Tometten, Mareike Orsal, Arif S. Hajos, Silvia E. Fernandez, Nelson Arck, Petra C. Blois, Sandra M. TI High expression of survivin and down-regulation of Stat-3 characterize the feto-maternal interface in failing murine pregnancies during the implantation period SO PLACENTA LA English DT Article DE abortion mouse model; dendritic cells; survivin; p-Stat-3; T cells ID APOPTOSIS; MICE; CELLS; ACTIVATION; MACROPHAGES; INHIBITION; TOLERANCE; PATHWAYS AB The materno-fetal interface has for long been considered as an immune privileged biological site and thus understanding the mechanisms underlying fetal survival have been the focus of intense research. In adults, survivin and Stat-3 proteins are involved in tolerance as well as the induction of apoptosis. However, the role of these molecules in pregnancy and development has not been addressed. We have evaluated the expression of survivin and Stat-3 in allogeneic mouse models of low abortions (CBA/J x Balb/c), abortion prone (CBA/J x DBA/2J) and stress-triggered abortions from DBA/2J-mated CBA/J mice. We show that survivin is over-expressed in abortion-prone mating on gestation day 7.5. This effect was also found in stress-exposed mice, whereas expression was low in normal pregnancy mice. The phosphorylated Stat-3 (p-Stat-3) was down regulated in high abortion mating compared with low abortion mating, CBA/J x Balb/c. The level of apoptosis was similar in the three groups studied. Our results suggest that high expression of survivin and low expression of p-Stat-3 are involved in pregnancy loss in mice. (C) 2006 Elsevier Ltd. All rights reserved. C1 Med Univ Berlin, Charite, D-13353 Berlin, Germany. Univ Buenos Aires, CONICET, Dept Microbiol Biotechnol & Immunol, IDEHU, Buenos Aires, DF, Argentina. Univ Granada, Fac Med, Dept Bioquim Biol Mol & Immunol, Granada 10812, Spain. Univ Essex, Dept Biol Sci, Colchester CO4 3SQ, Essex, England. RP Blois, SM, Med Univ Berlin, Charite, Biomed Res Bldg,Raum 2-0549, D-13353 Berlin, Germany. EM sandra.blois@charite.de NR 24 TC 3 PU W B SAUNDERS CO LTD PI LONDON PA 32 JAMESTOWN RD, LONDON NW1 7BY, ENGLAND SN 0143-4004 J9 PLACENTA JI Placenta PD JUL PY 2007 VL 28 IS 7 BP 650 EP 657 DI 10.1016/j.placenta.2006.09.010 PG 8 SC Developmental Biology; Obstetrics & Gynecology; Reproductive Biology GA 181WL UT ISI:000247466900009 ER PT J AU Garcia-Ruiz, JM Villasuso, R Ayora, C Canals, A Otalora, F AF Garcia-Ruiz, Juan Manuel Villasuso, Roberto Ayora, Carlos Canals, Angels Otalora, Fermin TI Formation of natural gypsum megacrystals in Naica, Mexico SO GEOLOGY LA English DT Article DE gypsum; crystallization; mineral growth; anhydrite; Naica mine; nucleation ID CALCIUM-SULFATE DIHYDRATE; CASO4-H2O; CRYSTALS AB Exploration in the Naica mine (Chihuahua, Mexico) recently unveiled several caves containing giant, faceted, and transparent single crystals of gypsum (CaSO4 center dot 2H(2)O) as long as 11 m. These large crystals form at very low supersaturation. The problem is to explain how proper geochemical conditions can be sustained for a long time without large fluctuations that would trigger substantial nucleation. Fluid inclusion analyses show that the crystals grew from low-salinity solutions at a temperature of similar to 54 degrees C, slightly below the one at which the solubility of anhydrite equals that of gypsum. Sulfur and oxygen isotopic compositions of gypsum crystals are compatible with growth from solutions resulting from dissolution of anhydrite previously precipitated during late hydrothermal mineralization, suggesting that these megacrystals formed by a self-feeding mechanism driven by a solution-mediated, anhydrite-gypsum phase transition. Nucleation kinetics calculations based on laboratory data show that this mechanism can account for the formation of these giant crystals, yet only when operating within the very narrow range of temperature identified by our fluid inclusion study. These singular conditions create a mineral wonderland, a site of scientific interest, and an extraordinary phenomenon worthy of preservation. C1 Univ Granada, Inst Andaluz Ciencias Tierra, CSIC, E-18022 Granada, Spain. Compania Penoles, Unidad Naica, Naica, Chihuahua, Mexico. CSIC, Inst Ciencias Terra Jaume Almera, E-08028 Barcelona, Spain. Univ Barcelona, Dept Cristal Iografia Mineral & Diposits Minerals, E-08028 Barcelona, Spain. Univ Granada, Inst Andaluz Ciencias Tierra, CSIC, E-18002 Granada, Spain. RP Garcia-Ruiz, JM, Univ Granada, Inst Andaluz Ciencias Tierra, CSIC, Campus Fuentenueva, E-18022 Granada, Spain. EM jmgruiz@ugr.es NR 23 TC 2 PU GEOLOGICAL SOC AMERICA, INC PI BOULDER PA PO BOX 9140, BOULDER, CO 80301-9140 USA SN 0091-7613 J9 GEOLOGY JI Geology PD APR PY 2007 VL 35 IS 4 BP 327 EP 330 DI 10.1130/G23393A.1 PG 4 SC Geology GA 184GA UT ISI:000247627900010 ER PT J AU Duarte, OG Requena, I Rosario, Y AF Duarte, O. G. Requena, I. Rosario, Y. TI Fuzzy techniques for environmental-impact assessment in the mineral deposit of punta gorda (moa, cuba) SO ENVIRONMENTAL TECHNOLOGY LA English DT Article DE computing with words; fuzzy arithmetic; fuzzy environmental-impact assessment ID NUMBERS AB An Environmental-Impact Assessment (EIA) makes it possible to determine whether or not a project is compatible with nature, and thus whether the project qualities to be executed. The Environmental-Impact Assessment is intended to establish a balance between the development of human activities and the environment. In this work, an Environmental-Impact Assessment of the mineral deposit of Punta Gorda (Moa, Cuba) is made, using fuzzy techniques. Two previous works have been combined: an appropriate linguistic model built with fuzzy techniques, providing a framework for handling qualitative and quantitative variables, and an environmental-impact assessment carried out according to a classical methodology. C1 Univ Granada, Dept Ciencias Computa & IA ETSI Informat, E-18071 Granada, Spain. ISMM, Dept Mat & Informat, Moa, Cuba. RP Duarte, OG, Univ Granada, Dept Ciencias Computa & IA ETSI Informat, E-18071 Granada, Spain. NR 16 TC 0 PU SELPER LTD, PUBLICATIONS DIV PI LONDON PA UNIT 55, 2 OLD BROMPTON ROAD, LONDON SW7 3DQ, ENGLAND SN 0959-3330 J9 ENVIRON TECHNOL JI Environ. Technol. PD JUN PY 2007 VL 28 IS 6 BP 659 EP 669 PG 11 SC Environmental Sciences GA 187DP UT ISI:000247827800007 ER PT J AU Gavira, JA Gonzalez-Ramirez, LA Oliver-Salvador, MC Soriano-Garcia, M Garcia-Ruiz, JA AF Gavira, J. A. Gonzalez-Ramirez, L. A. Oliver-Salvador, M. C. Soriano-Garcia, M. Garcia-Ruiz, J. A. TI Structure of the mexicain-E-64 complex and comparison with other cysteine proteases of the papain family SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY LA English DT Article ID CRYSTAL-STRUCTURE; CARICA-CANDAMARCENSIS; PROTEIN STRUCTURES; ACTIVE SITE; LATEX; E-64; INHIBITOR; CRYSTALLOGRAPHY; PURIFICATION; CRYSTALLIZATION AB Mexicain is a 23.8 kDa cysteine protease from the tropical plant Jacaratia mexicana. It is isolated as the most abundant product after cation-exchange chromatography of the mix of proteases extracted from the latex of the fruit. The purified enzyme inhibited with E-64 [N-(3-carboxyoxirane2-carbonyl)-leucyl-amino(4-guanido)butane] was crystallized by sitting-drop vapour diffusion and the structure was solved by molecular replacement at 2.1 angstrom resolution and refined to an R factor of 17.7% (R-free = 23.8%). The enzyme belongs to the alpha+beta class of proteins and the structure shows the typical papain-like fold composed of two domains, the a-helix-rich (L) domain and the beta-barrel-like (R) domain, separated by a groove containing the active site formed by residues Cys25 and His159, one from each domain. The four monomers in the asymmetric unit show one E-64 molecule covalently bound to Cys25 in the active site and differences have been found in the placement of E-64 in each monomer. C1 Univ Granada, CSIC, IACT, Lab Estudios Cristalograf, Granada, Spain. Inst Politecn Nacl, Unidad Profes Interdisciplinaria Biotecnol, Mexico City, DF, Mexico. Univ Nacl Autonoma Mexico, Inst Quim, Mexico City 04510, DF, Mexico. RP Garcia-Ruiz, JA, Univ Granada, CSIC, IACT, Lab Estudios Cristalograf, Granada, Spain. EM jmgruiz@ugr.es NR 57 TC 2 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0907-4449 J9 ACTA CRYSTALLOGR D-BIOL CRYST JI Acta Crystallogr. Sect. D-Biol. Crystallogr. PD MAY PY 2007 VL 63 PN Part 5 BP 555 EP 563 DI 10.1107/S0907444907005616 PG 9 SC Biochemical Research Methods; Biochemistry & Molecular Biology; Biophysics; Crystallography GA 189SO UT ISI:000248009000001 ER PT J AU Moreno-Ostos, E da Silva, SLR de Vicente, I Cruz-Pizarro, L AF Moreno-Ostos, Enrique Rodrigues da Silva, Sergio L. de Vicente, Inmaculada Cruz-Pizarro, Luis TI Interannual and between-site variability in the occurrence of clear water phases in two shallow Mediterranean lakes SO AQUATIC ECOLOGY LA English DT Article DE Albufera of Adra; clear water phases; cyanobacteria; Daphnia; meteorological forcing; shallow Mediterranean lakes ID ZOOPLANKTON-CYANOBACTERIA INTERACTIONS; NORTH-ATLANTIC OSCILLATION; LONG-TERM DYNAMICS; SEASONAL SUCCESSION; PLANKTON DYNAMICS; ESTHWAITE WATER; DAPHNIA; FOOD; PHYTOPLANKTON; FILAMENTS AB It is widely accepted that clear water phases constitute a regular stage in the seasonal succession of plankton in dimictic lakes and reservoirs (i.e. PEG Model). The occurrence of such a phenomenon in Mediterranean shallow lakes is characterised by a marked interannual variability, which makes it difficult to establish reliable predictions on the dynamics and functioning of plankton in these ecosystems. In the present paper we analyse the factors influencing the occurrence of the clear water phases in the two shallow lakes of the Albufera of Adra, a coastal wetland region of south-eastern Spain: Lake Honda and Lake Nueva. Despite their geographical proximity, both lakes depicted large hydrological and limnological differences. Lake Honda is an epigenic and recharge lake that is strongly influenced by the hydrological conditions in its watershed, while Lake Nueva can be classified as a hypogenic and discharge lake and, as such, is less affected by the hydrological regime. In contrast, the morphometry, exposure and fetch of Lake Nueva make this ecosystem especially sensitive to wind forcing. Clear water phases in these shallow lakes were linked with periods of low thermal stability and the dominance of small-edible algae in the phytoplankton community, both of which allowed a Daphnia magna population to grow up and induce the algae collapse by grazing. In Lake Honda, those conditions were met during the spring of 2002 under the influence of intense rainfall-events, while in Lake Nueva the clear water phase was induced in the spring of 2003 by the occurrence of strong and frequent wind events. In both lakes, a relatively high water column thermal stability and the abundance of cyanobacteria early in the spring prevented the development of the Daphnia magna population and the occurrence of the clear water phase. C1 Univ Granada, Inst Water Res, E-18071 Granada, Spain. Univ Barcelona, Dept Ecol, Grp Invest Flumen, E-08028 Barcelona, Spain. Univ Santa Cecilia, BR-11045907 Santos, SP, Brazil. Univ So Denmark, Inst Biol, DK-5230 Odense, Denmark. RP Moreno-Ostos, E, Univ Granada, Inst Water Res, C Ramon & Cajal 4, E-18071 Granada, Spain. EM enmoreno@ugr.es NR 65 TC 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1386-2588 J9 AQUAT ECOL JI Aquat. Ecol. PD JUN PY 2007 VL 41 IS 2 BP 285 EP 297 DI 10.1007/s10452-006-9072-0 PG 13 SC Ecology; Limnology; Marine & Freshwater Biology GA 191DC UT ISI:000248109100014 ER PT J AU Marin, C Longoni, SS Mateo, H de Diego, JA Alunda, JM Minaya, G Sanchez-Moreno, M AF Marin, C. Longoni, S. S. Mateo, H. de Diego, J. A. Alunda, J. M. Minaya, G. Sanchez-Moreno, M. TI The use of an excreted superoxide dismutase in an ELISA and Western blotting for the diagnosis of Leishmania (Leishmania) infantum naturally infected dogs SO PARASITOLOGY RESEARCH LA English DT Article ID POLYMERASE-CHAIN-REACTION; VISCERAL LEISHMANIASIS; CHAGAS-DISEASE; CUTANEOUS LEISHMANIASIS; TRYPANOSOMA-CRUZI; ANTIGENS; IDENTIFICATION; INDIVIDUALS; MEXICO; DNA AB An excreted iron superoxide dismutase of pI 3.75 and a molecular mass of approximately 25 kDa was partially purified by QAE Sephadex ion-exchange chromatography from the in vitro culture of Leishmania (Leishmania) infantum. This enzyme was detected by enzyme-linked immunosorbent assay and Western blot of anti-L. infantum antibodies in dog serum. For the determination of the sensitivity and specificity of this protein, the results using the complete-parasite antigen fraction were taken as references. For this, 39 sera were assayed in dogs from different Spanish provinces. By Western blot, at a dilution of 1:250, 82% of the sera were positive when superoxide dismutase excreted was used as the antigen, against 56.4% positivity when the complete parasite was used as the antigen. These findings support the results of a previous study, indicating that the superoxide dismutase excreted can be useful in diagnosing L. (L.) infantum. C1 Univ Granada, Fac Ciencias, Inst Biotecnol, Dept Parasitol, E-18071 Granada, Spain. UAM, Fac Med, Dept Med Prevent & Salud Publ, Unidad Parasitol & Med Trop, Madrid, Spain. Escuela Vet, Dept Salud Anim, Madrid 18040, Spain. Inst Nacl Salud, Lab Leishmaniosis & Chagas, Lima 1400 11, Peru. RP Sanchez-Moreno, M, Univ Granada, Fac Ciencias, Inst Biotecnol, Dept Parasitol, C Severo Ochoa SN, E-18071 Granada, Spain. EM msanchem@ugr.es NR 31 TC 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0932-0113 J9 PARASITOL RES JI Parasitol. Res. PD AUG PY 2007 VL 101 IS 3 BP 801 EP 808 DI 10.1007/s00436-007-0551-6 PG 8 SC Parasitology GA 192HC UT ISI:000248190500041 ER PT J AU Dall, TH Foellmi, C Pritchard, J Lo Curto, G Prieto, CA Bruntt, H Amado, PJ Arentoft, T Baes, M Depagne, E Fernandez, M Ivanov, V Koesterke, L Monaco, L O'Brien, K Sarro, LM Saviane, I Scharwachter, J Schmidtobreick, L Schuetz, O Seifahrt, A Selman, F Stefanon, M Sterzik, M AF Dall, T. H. Foellmi, C. Pritchard, J. Lo Curto, G. Prieto, C. Allende Bruntt, H. Amado, P. J. Arentoft, T. Baes, M. Depagne, E. Fernandez, M. Ivanov, V. Koesterke, L. Monaco, L. O'Brien, K. Sarro, L. M. Saviane, I. Scharwaechter, J. Schmidtobreick, L. Schuetz, O. Seifahrt, A. Selman, F. Stefanon, M. Sterzik, M. TI VSOP: the variable star one-shot project - I. Project presentation and first data release SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE stars; variables; general - stars; fundamental parameters - methods; observational - astronomical data bases; miscellaneous ID RADIAL-VELOCITY MEASUREMENTS; HIGH-RESOLUTION SPECTROSCOPY; SOUTHERN LUMINOUS STARS; LARGE-MAGELLANIC-CLOUD; SKY VARIABILITY SURVEY; LTE MODEL ATMOSPHERES; TIME-SERIES ANALYSIS; RR-LYRAE STARS; EXTRASOLAR PLANETS; LUNAR OCCULTATION AB Context. About 500 new variable stars enter the General Catalogue of Variable Stars (GCVS) every year. Most of them however lack spectroscopic observations, which remains critical for a correct assignement of the variability type and for the understanding of the object. Aims. The Variable Star One-shot Project (VSOP)is aimed at (1) providing the variability type and spectral type of all unstudied variable stars, (2) process, publish, and make the data available as automatically as possible, and (3) generate serendipitous discoveries. This first paper describes the project itself, the acquisition of the data, the dataflow, the spectroscopic analysis and the on-line availability of the fully calibrated and reduced data. We also present the results on the 221 stars observed during the first semester of the project. Methods. We used the high-resolution echelle spectrographs HARPS and FEROS in the ESO La Silla Observatory (Chile) to survey known variable stars. Once reduced by the dedicated pipelines, the radial velocities are determined from cross correlation with synthetic template spectra, and the spectral types are determined by an automatic minimum distance matching to synthetic spectra, with traditional manual spectral typing cross-checks. The variability types are determined by manually evaluating the available light curves and the spectroscopy. In the future, a new automatic classifier, currently being developed by members of the VSOP team, based on these spectroscopic data and on the photometric classifier developed for the COROT and Gaia space missions, will be used. Results. We confirm or revise spectral types of 221 variable stars from the GCVS. We identify 26 previously unknown multiple systems, among them several visual binaries with spectroscopic binary individual components. We present new individual results for the multiple systems V349 Vel and BC Gru, for the composite spectrum star V4385 Sgr, for the T Tauri star V1045 Sco, and for DM Boo which we re-classify as a BY Draconis variable. The complete data release can be accessed via the VSOP web site. C1 Gemini Observ, Hilo, HI 96720 USA. Lab Astrophys Grenoble, F-38400 St Martin Dheres, France. European So Observ, D-85748 Garching, Germany. European So Observ, Santiago, Chile. Univ Texas, McDonald Observ, Austin, TX 78712 USA. Univ Texas, Dept Astron, Austin, TX 78712 USA. Univ Sydney, Sch Phys A28, Sydney, NSW 2006, Australia. Univ Granada, IAA, CSIC, E-18080 Granada, Spain. Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark. Univ Ghent, Sterrenkundig Observ, B-9000 Ghent, Belgium. Pontificia Univ Catolica Chile, Santiago, Chile. Inst Astrofis Andalucia, E-18008 Granada, Spain. ETSI Informat, Dept Artificial Intelligence, E-28040 Madrid, Spain. Astrophys Inst, D-07745 Jena, Germany. Univ Sternwarte Jena, D-07745 Jena, Germany. RP Dall, TH, Gemini Observ, 670 N Aohoku Pl, Hilo, HI 96720 USA. EM tdall@gemini.edu NR 75 TC 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD AUG PY 2007 VL 470 IS 3 BP 1201 EP 1214 DI 10.1051/0004-6361:20077571 PG 14 SC Astronomy & Astrophysics GA 192HE UT ISI:000248190700043 ER PT J AU Castro, JL Flores-Hidalgo, LD Mantas, CJ Puche, JM AF Castro, J. L. Flores-Hidalgo, L. D. Mantas, C. J. Puche, J. M. TI Extraction of fuzzy rules from support vector machines SO FUZZY SETS AND SYSTEMS LA English DT Article DE support vector machines; fuzzy rule-based systems; uninorms ID ARTIFICIAL NEURAL-NETWORKS; OPERATORS; BOXES AB The relationship between support vector machines (SVMs) and Takagi-Sugeno-Kang (TSK) fuzzy systems is shown. An exact representation of SVMs as TSK fuzzy systems is given for every used kernel function. Restricted methods to extract rules from SVMs have been previously published. Their limitations are surpassed with the presented extraction method. The behavior of SVMs is explained by means of fuzzy logic and the interpretability of the system is improved by introducing the lambda-fuzzy rule-based system (lambda-FRBS). The lambda-FRBS exactly approximates the SVM's decision boundary and its rules and membership functions are very simple, aggregating the antecedents with uninorms as compensation operators. The rules of the lambda-FRBS are limited to two and the number of fuzzy propositions in each rule only depends on the cardinality of the set of support vectors. For that reason, the lambda-FRBS overcomes the course of dimensionality and problems with high-dimensional data sets are easily solved with the lambda-FRBS. (c) 2007 Elsevier B.V. All rights reserved. C1 Univ Granada, Dept Comp Sci & AI, E-18071 Granada, Spain. Cent Univ Venezuela, Sch Math, Caracas, Venezuela. RP Mantas, CJ, Univ Granada, Dept Comp Sci & AI, E-18071 Granada, Spain. EM castro@decsai.ugr.es lflorhid@yahoo.es cmantas@decsai.ugr.es puche@decsai.ug.es NR 43 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0114 J9 FUZZY SET SYSTEM JI Fuzzy Sets Syst. PD SEP 16 PY 2007 VL 158 IS 18 BP 2057 EP 2077 DI 10.1016/j.fss.2007.04.014 PG 21 SC Computer Science, Theory & Methods; Mathematics, Applied; Statistics & Probability GA 200TU UT ISI:000248786500006 ER PT J AU Thompson-Chagoyan, OC Maldonado, J Gil, A AF Thompson-Chagoyan, Oscar C. Maldonado, Jose Gil, Angel TI Colonization and impact of disease and other factors on intestinal microbiota SO DIGESTIVE DISEASES AND SCIENCES LA English DT Article DE colonization; inflammatory bowel disease; intestine; intestinal diseases; microbiota ID INFLAMMATORY-BOWEL-DISEASE; 16S RIBOSOMAL-RNA; BOTTLE-FED INFANTS; DIFFICILE-ASSOCIATED DIARRHEA; RDNA SEQUENCE-ANALYSIS; FORMULA-FED INFANTS; CLOSTRIDIUM-DIFFICILE; FECAL FLORA; HUMAN FECES; BACTERIAL-COLONIZATION AB The aim of this study was to review the process of microbial colonization and the environmental and host factors that influence colonization and microbial succession. The impact of some diseases on intestinal microbiota composition is also described. Microbial colonization of the gut by maternal vaginal and fecal bacteria begins during and after birth. During the first 2 years of life, specific microbes become established in a process designated microbial succession. Microbial succession in the gastrointestinal tract is influenced by numerous external and internal host-related factors, and by the second year of life, the intestinal microbiota composition is considered identical to that of adults. Nevertheless, intestinal microbiota in both infants and adults remain incompletely characterized and their diversity poorly defined. The main explanation is that many intestinal bacteria that live in an anaerobic environment are difficult or impossible to culture outside the intestine. However, recent advances in molecular biology techniques have initiated the description of new bacteria species. The composition of gut microbiota can be modulated by host, environmental, and bacterial factors, and strong evidence has emerged of substantial modifications during illness or exposure to threatening experiences. It has been postulated that improvements in hygienic measures have led to an increase in allergic diseases ("hygiene hypothesis"). Alterations in gut microbiota and their functions have been widely associated with many chronic and degenerative diseases, including inflammatory bowel disease, colon cancer, and rheumatoid arthritis. C1 Univ Granada, Dept Biochem & Mol Biol, E-18071 Granada, Spain. Univ Granada, Sch Med, Dept Pediat, Granada, Spain. Los Venados Gen Hosp, Mexican Inst Social Secur, Dept Pediat, Mexico City, DF, Mexico. RP Thompson-Chagoyan, OC, Univ Granada, Dept Biochem & Mol Biol, Campus Cartuja, E-18071 Granada, Spain. EM agil@ugr.es NR 88 TC 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0163-2116 J9 DIGEST DIS SCI JI Dig. Dis. Sci. PD SEP PY 2007 VL 52 IS 9 BP 2069 EP 2077 DI 10.1007/s10620-006-9285-z PG 9 SC Gastroenterology & Hepatology GA 201CY UT ISI:000248810300008 ER PT J AU Radovic, I Monticelli, F Papacchini, F Magni, E Cury, AH Vulicevic, ZR Ferrari, M AF Radovic, Ivana Monticelli, Francesca Papacchini, Federica Magni, Elisa Cury, Alvaro Hafiz Vulicevic, Zoran R. Ferrari, Marco TI Accelerated aging of adhesive-mediated fiber post-resin composite bonds: A modeling approach SO JOURNAL OF DENTISTRY LA English DT Article DE fiber posts; FRC; resin cement; flowable composite; bond strength; water aging; sandblasting ID ENDODONTICALLY TREATED TEETH; GLASS-FIBER; SURFACE-TREATMENT; LUTING AGENTS; CORE MATERIAL; DENTIN; STRENGTH; DURABILITY; CEMENT; WATER AB Objectives: Although fiber posts luted in root canals are not directly exposed to oral fluids, water storage is considered as in vitro accelerated aging test for bonded interfaces. The aim of the study was to evaluate the influence of accelerated water aging on fiber post-resin composite adhesion. Methods: Forty fiber posts (DT Light Post, RTD) were randomly divided into two main groups, according to the surface treatment performed. Group 1: XPBond adhesive (Dentsply Caulk); Group II: sandblasting (Rocatec-Pre, 3M ESPE) and XPBond. Dual-cured resin cement (Calibra, Dentsply Caulk) and flowable composite (X-Flow, Dentsply Caulk) were applied on the posts to produce cylindrical specimens. The bond strength at the interface between post and cement/composite was measured with the microtensile test according to the non-trimming technique. Half of the sticks were tested immediately for bond strength, while in the other half testing was performed after 1 month of water storage at 37 degrees C. Post-cement/composite interfaces were evaluated under SEM prior and after water aging. Statistical analysis was performed using the Kruskal-Wallis ANOVA followed by Dunn's multiple range test (P < 0.05). Results: Immediate bond strength was higher on sandblasted posts. After water aging the two post surface treatments resulted comparable in bond strength. Resin cement achieved higher bond strength to fiber posts than flowable composite. Water aging significantly reduced bond strength. Conclusions: Sandblasting followed by adhesive coating may improve immediate post-resin bond strength in comparison to adhesive alone. However, fiber post-resin bond strength mediated by hydrophilic adhesive tends to decrease after water aging. (c) 2007 Elsevier Ltd. All rights reserved. C1 Univ Belgrade, Fac Dent, Clin Pediat & Prevent Dent, Belgrade 11000, Serbia. Univ Siena, Policlin Le Scotte, Dept Dent Mat & Restorat Dent, I-53100 Siena, Italy. Univ Granada, E-18071 Granada, Spain. Univ Sao Paulo, Baru Dent Sch, BR-05508 Sao Paulo, Brazil. RP Radovic, I, Univ Belgrade, Fac Dent, Clin Pediat & Prevent Dent, Dr Subotica 11, Belgrade 11000, Serbia. EM ivana.radovic@iritel.com NR 37 TC 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0300-5712 J9 J DENT JI J. Dent. PD AUG PY 2007 VL 35 IS 8 BP 683 EP 689 DI 10.1016/j.jdent.2007.05.006 PG 7 SC Dentistry, Oral Surgery & Medicine GA 202HL UT ISI:000248892500009 ER PT J AU Volchan, E Vila, J AF Volchan, Eliane Vila, Jaime TI The defense cascade: The dynamics of fear reaction SO PSYCHOPHYSIOLOGY LA English DT Meeting Abstract C1 Univ Fed Rio de Janeiro, BR-21941 Rio De Janeiro, Brazil. Univ Granada, E-18071 Granada, Spain. Univ Florida, Gainesville, FL 32611 USA. NR 0 TC 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0048-5772 J9 PSYCHOPHYSIOLOGY JI Psychophysiology PY 2007 VL 44 SU Suppl. 1 BP S15 EP S16 PG 2 SC Psychology, Biological; Physiology; Psychology; Psychology, Experimental GA 203VK UT ISI:000249001900070 ER PT J AU Faria, AJP Machado-Pinheiro, W David, IPA Guerra, P Perakakis, P Oliveira, L Pereira, MG Vila, J Volchan, E AF Faria, Aydamari J. P., Jr. Machado-Pinheiro, Walter David, Isabel P. A. Guerra, Pedro Perakakis, Pandelis Oliveira, Leticia Pereira, Mirtes G. Vila, Jaime Volchan, Eliane TI Emotional engagement and desengagement veryfied by saccadic reaction times SO PSYCHOPHYSIOLOGY LA English DT Meeting Abstract DE emotion; attention; saccadic reaction times C1 Univ Fed Rio de Janeiro, BR-21941 Rio De Janeiro, Brazil. Univ Fed Fluminense, BR-24220000 Niteroi, RJ, Brazil. Univ Granada, E-18071 Granada, Spain. NR 0 TC 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0048-5772 J9 PSYCHOPHYSIOLOGY JI Psychophysiology PY 2007 VL 44 SU Suppl. 1 BP S57 EP S57 PG 1 SC Psychology, Biological; Physiology; Psychology; Psychology, Experimental GA 203VK UT ISI:000249001900259 ER PT J AU Souza, GGL Mendona-De-Souza, ACF Barros, EM Fischer, NL Coutinho, EFS Oliveira, L Mendlowicz, MV Figueira, I Vila, J Volchan, E AF Souza, Gabriela G. L. Mendona-de-Souza, Ana C. F. Barros, Eduardo M. Fischer, Nastassja L. Coutinho, Evandro F. S. Oliveira, Leticia Mendlowicz, Mauro V. Figueira, Ivan Vila, Jaime Volchan, Eliane TI Resilience, vagal tone and pleasant priming improve cardiac recovery from acute stress SO PSYCHOPHYSIOLOGY LA English DT Meeting Abstract DE heart period; acute stress; individual variability C1 Univ Fed Rio de Janeiro, BR-21941 Rio De Janeiro, Brazil. Univ Fed Fluminense, BR-24220000 Niteroi, RJ, Brazil. Univ Granada, E-18071 Granada, Spain. NR 0 TC 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0048-5772 J9 PSYCHOPHYSIOLOGY JI Psychophysiology PY 2007 VL 44 SU Suppl. 1 BP S58 EP S58 PG 1 SC Psychology, Biological; Physiology; Psychology; Psychology, Experimental GA 203VK UT ISI:000249001900263 ER PT J AU Munoz, MA Hackley, SS Rodriguez, SS Delgado, LC de Paula, IIA Fernandez-Santaella, M Vila, JJ AF Munoz, Miguel A. Hackley, Steve S. Rodriguez, Sonia S. Delgado, Luis C. de Paula, Isabel I. Antunes Fernandez-Santaella, M'Carmen Vila, Jaime J. TI Eyeblink and post-auricular startle modulation during reward, punishment, and frustration in deprived and non-deprived smokers SO PSYCHOPHYSIOLOGY LA English DT Meeting Abstract DE startle; smoking; post-auricular C1 Univ Granada, E-18071 Granada, Spain. Univ Fed Fluminense, BR-24220000 Niteroi, RJ, Brazil. NR 0 TC 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0048-5772 J9 PSYCHOPHYSIOLOGY JI Psychophysiology PY 2007 VL 44 SU Suppl. 1 BP S69 EP S70 PG 2 SC Psychology, Biological; Physiology; Psychology; Psychology, Experimental GA 203VK UT ISI:000249001900317 ER PT J AU Mata, JL Rodriguez, S Munoz, MA Souza, G Miccoli, L Anllo-Vento, L Vila, J AF Mata, Jose L. Rodriguez, Sonia Munoz, Miguel A. Souza, Gabriela Miccoli, Laura Anllo-Vento, Lourdes Vila, Jaime TI Eye-blink startle evoked by defense noise and modulated presenting affective sounds SO PSYCHOPHYSIOLOGY LA English DT Meeting Abstract DE eye-blink startle; international affective digitalized sound; emotion C1 Univ Jaen, Jaen, Spain. Univ Granada, E-18071 Granada, Spain. Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil. NR 0 TC 0 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0048-5772 J9 PSYCHOPHYSIOLOGY JI Psychophysiology PY 2007 VL 44 SU Suppl. 1 BP S87 EP S87 PG 1 SC Psychology, Biological; Physiology; Psychology; Psychology, Experimental GA 203VK UT ISI:000249001900398 ER PT J AU Rojas-Sanchez, F Alaminos, M Campos, A Rivera, H Sanchez-Quevedo, MC AF Rojas-Sanchez, F. Alaminos, M. Campos, A. Rivera, H. Sanchez-Quevedo, M. C. TI Dentin in severe fluorosis: a quantitative histochemical study SO JOURNAL OF DENTAL RESEARCH LA English DT Article DE dentin; fluoride; mineralization; electron microscopy; x-ray microanalysis ID COMPLEX IN-VITRO; FLUORIDE; MINERALIZATION; MICROHARDNESS; MICROANALYSIS; ENAMEL AB Dentin responds to different alterations in the enamel with hypermineralization, and is a biomarker of fluoride exposure. We hypothesized that severe fluorosis would lead to hyper mineralization of the dentin when the enamel was severely affected. We used scanning electron microscopy and quantitative electron-probe microanalysis to compare dentin and enamel from healthy and fluorotic teeth. The dentin in fluorotic teeth was characterized by a highly mineralized sclerotic pattern, in comparison with control teeth ( p < 0.001) and fluorotic enamel lesions ( p < 0.001). Enamel near the lesions showed hypercalcification in comparison with dentin ( p < 0.001). In response to the effects of severe fluorosis in the enamel, the dentin showed hypermineralization, as found in other enamel disorders. The hypermineralization response of the dentin in our samples suggests that the mechanism of the response should be taken into account in dental caries and other dental disorders associated with severe fluorosis. C1 Cent Univ Venezuela, Fac Odontol, Inst Invest Odontol Raul Vincentelli, Caracas, Venezuela. Univ Granada, Fac Med & Odontol, Dept Histol, E-18071 Granada, Spain. RP Sanchez-Quevedo, MC, Cent Univ Venezuela, Fac Odontol, Inst Invest Odontol Raul Vincentelli, Caracas, Venezuela. EM mcsanchez@histolii.ugr.es NR 21 TC 0 PU INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314-3406 USA SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD SEP PY 2007 VL 86 IS 9 BP 857 EP 861 PG 5 SC Dentistry, Oral Surgery & Medicine GA 203ZS UT ISI:000249013200010 ER PT J AU Acosta, MD Moraes, LA Grados, LR AF Acosta, Maria D. Moraes, Luiza A. Grados, Luis Romero TI On boundaries on the predual of the Lorentz sequence space SO JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS LA English DT Article DE holomorphic function; boundary; peak point; strong peak set ID HOLOMORPHIC-FUNCTIONS; INFINITE DIMENSIONS; ALGEBRAS; C(K) AB Let X be the canonical predual of the Lorentz sequence space and let A(u) (B-X) be the Banach algebra of all complex valued functions defined on the closed unit ball BX of X which are uniformly continuous on BX and holomorphic on the interior of BX, endowed with the sup norm. A characterization of the boundaries for An (BX) is given in terms of the distance to the strong peak sets of this algebra. (c) 2007 Elsevier Inc. All rights reserved. C1 Univ Granada, Dept Anal Matemat, E-18071 Granada, Spain. Univ Fed Rio de Janeiro, Inst Matemat, BR-21945970 Rio De Janeiro, Brazil. Univ Estadual Ponta Grossa, Dept Matemat, BR-84030900 Ponta Grossa, PR, Brazil. RP Acosta, MD, Univ Granada, Dept Anal Matemat, E-18071 Granada, Spain. EM dacosta@ugr.es luiza@im.ufrj.br romerogrados@hotmail.com NR 12 TC 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0022-247X J9 J MATH ANAL APPL JI J. Math. Anal. Appl. PD DEC 1 PY 2007 VL 336 IS 1 BP 470 EP 479 DI 10.1016/j.jmaa.2007.02.041 PG 10 SC Mathematics, Applied; Mathematics GA 208KG UT ISI:000249317600035 ER PT J AU Fernandez-Llimos, F Barrichelo, P Rossignoli, P Correr, CJ Pontarolo, R AF Fernandez-Llimos, Fernando Barrichelo, Paola Rossignoli, Paula Correr, Cassyano J. Pontarolo, Roberto TI Antibiotic patient compliance and cure self-perception in community pharmacy SO PHARMACY WORLD & SCIENCE LA English DT Meeting Abstract C1 Univ Granada, Pharmaceut Care Res Grp, Granada, Spain. Univ Fed Parana, Dept Farm, BR-80060000 Curitiba, Parana, Brazil. Ctr Univ Positivo, Farm Escola, Curitiba, Parana, Brazil. NR 0 TC 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0928-1231 J9 PHARM WORLD SCI JI Pharm. World Sci. PD OCT PY 2007 VL 29 IS 5 BP 467 EP 468 PG 2 SC Chemistry, Multidisciplinary; Pharmacology & Pharmacy GA 209SL UT ISI:000249408200084 ER PT J AU Ortega, KL Arzate-Mora, N Ceballos-Salobrena, A Martin-Rico, P AF Ortega, Karem L. Arzate-Mora, Nancy Ceballos-Salobrena, Alejandro Martin-Rico, Patricia TI Oral plasmablastic lymphoma SO AIDS READER LA English DT Editorial Material DE HIV/AIDS; oral cancer; lymphoma C1 Univ Sao Paulo, BR-05508 Sao Paulo, Brazil. Univ Nacl Autonoma Mexico, Mexico City, DF, Mexico. Univ Granada, E-18071 Granada, Spain. Hosp Carlos Haya, Malaga, Spain. RP Ortega, KL, Univ Sao Paulo, BR-05508 Sao Paulo, Brazil. NR 5 TC 2 PU CLIGGOTT PUBLISHING CO PI DARIEN PA 330 BOSTON POST RD, DARIEN, CT 06820 USA SN 1053-0894 J9 AIDS READ JI Aids Read. PD SEP PY 2007 VL 17 IS 9 BP 446 EP 447 PG 2 SC Immunology; Infectious Diseases GA 210QK UT ISI:000249470500003 ER PT J AU Ferreira, SLC Korn, MDGA Ferreira, HS da Silva, EGP Araujo, RGO Souza, AS Macedo, SM Lima, DDC de Jesus, RM Amorim, FAC Bosque-Sendra, JM AF Ferreira, Sergio Luis Costa Korn, Maria das Gracsa Andrade Ferreira, Hadla Sousa da Silva, Erik Galvao Paranhos Araujo, Rennan Geovanny Oliveira Souza, Anderson Santos Macedo, Samuel Marques Lima, Daniel de Castro de Jesus, Raildo Mota Amorim, Fabio Alan Carqueija Bosque-Sendra, Juan Manuel TI Application of multivariate techniques in optimization of spectroanalytical methods SO APPLIED SPECTROSCOPY REVIEWS LA English DT Review DE multivariate techniques; factorial design; central composite design; Doehlert matrix; Box-Behnken design; AAS; ICP; spectroanalytical methods ID ATOMIC-ABSORPTION-SPECTROMETRY; ONLINE PRECONCENTRATION SYSTEM; MICROWAVE-ASSISTED DIGESTION; CLOUD POINT EXTRACTION; PRESSURIZED LIQUID EXTRACTION; SLURRY PREPARATION PROCEDURES; COLD VAPOR GENERATION; FACTORIAL DESIGN; BIOLOGICAL SAMPLES; DOEHLERT MATRIX AB The present article describes fundamentals and applications of multivariate techniques used for the optimization of analytical procedures and systems involving spectroanalytical methods such as flame atomic absorption spectrometry (FAAS), electrothermal atomic absorption spectrometry (ETAAS), inductively coupled plasma optical emission spectrometry (ICP OES), and inductively coupled plasma mass spectrometry (ICP-MS), considering the main steps of a chemical analysis. This way, applications of experimental designs in optimization of sampling systems, digestion procedures, preconcentration procedures, instrumental parameters of quantification steps of analytical methods, and robustness tests have been summarized in this work. C1 Univ Fed Bahia, Inst Quim, Salvador, BA, Brazil. Univ Fed Bahia, Inst Ciencias Ambientais & Desenvolvimento S, Barreiras, BA, Brazil. Univ Granada, Fac Sci, Dept Analyt Chem, Granada, Spain. RP Ferreira, SLC, Univ Fed Bahia, Inst Quim, Salvador, BA, Brazil. EM slcf@ufba.br NR 65 TC 3 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0570-4928 J9 APPL SPECTROSC REV JI Appl. Spectrosc. Rev. PY 2007 VL 42 IS 5 BP 475 EP 491 DI 10.1080/05704920701551506 PG 17 SC Instruments & Instrumentation; Spectroscopy GA 213JM UT ISI:000249663100002 ER PT J AU Marchesi, C Garrido, CJ Bosch, D Proenza, JA Gervilla, F Monie, P Rodriguez-Vega, A AF Marchesi, Claudio Garrido, Carlos J. Bosch, Delphine Proenza, Joaquin A. Gervilla, Fernando Monie, Patrick Rodriguez-Vega, Antonio TI Geochemistry of Cretaceous magmatism in eastern Cuba: Recycling of North American continental sediments and implications for subduction polarity in the Greater Antilles paleo-arc SO JOURNAL OF PETROLOGY LA English DT Review DE eastern Cuba; Greater Antilles paleo-island arc; mantle source depletion; Nb/Ta fractionation; slab component ID HIGH-FIELD-STRENGTH; PLATE-TECTONIC MODEL; CARIBBEAN ISLAND-ARC; TRACE-ELEMENTS; VOLCANIC-ROCKS; MANTLE SOURCE; OCEANIC PLATEAU; HIGH-PRESSURE; MARIANA ARC; ZONE FLUIDS AB We present whole-rock major- and trace-element and Nd-Sr-Pb radiogenic isotope data for Cretaceous igneous suites from eastern Cuba. These rocks are related to the Greater Antilles paleo-island arc magmatism and have three different igneous styles. Group 1 consists of tholeiitic basalts and rare basaltic andesites that have normal mid-ocean ridge basalt (N-MORB)-like compositions similar to those found in back-arc basin basalts (TiO2 = 1.2-2.9wt%; La/Yb-( N) = 0.7-0.9, Th/Nb = 0.06-0.08, and initial Pb-208/Pb-204 = 37.65-3.74). Group 2 comprises basaltic and rare basaltic andesitic subvolcanic dykes with major- and trace-element and isotopic compositions similar to those of island arc tholeiites (TiO2 =0.7-1.4 wt%; La/Yb-(N) =0.6-0.9, Th/Nb = 0.06-0.68, and initial Pb-208/Pb-204 = 37.74-38.25). Group 3 is composed of low-Ti (TiO2 =0.3-0.9 wt%) calcalkaline igneous rocks that have an unambiguous subduction-related character (La/Yb-(N) = 1.1-5.0, Th/Nb = 0.35-1.55, and initial Pb-208/Pb-204 = 37.94-38.39). The parental magmas of the three groups formed by variable melting degrees (< 5-25%) of spinel lherzolite, with more depleted mantle sources for Groups 2 and 3 than Group 1. The trace-element and radiogenic isotope compositions of primitive Group 3 samples are strongly bimodal. One subgroup of samples is characterized by low Ta/Yb (0.02-0.03) and Th/La (0.10-0.13), slightly subchondritic Nb/Ta (13.3-17.3), and relatively high initial Pb-206/Pb-204 (18.57-18.62) and is an element of(Nd) (7.6-9.4). The remaining primitive Group 3 samples have higher Ta/Yb (0.06-0.11) and Th/La (0.24-0.32), and highly subchondritic Nb/Ta (7.6-9.1), coupled with lower initial Pb-206/Pb-204 (18.24-18.29) and is an element of(Nd) (3.4-5.5). These signatures were induced by two distinct slab components that mainly reflect the contributions of Cretaceous Atlantic marine and North American continental sediments, respectively. Nb/Ta in the first subgroup was influenced by melting of rutile-bearing subducted crust, whereas in the second it was inherited from recycled continental sediments. The involvement of Atlantic and North American sediments in Cuban Cretaceous magmatism indicates that the Proto-Caribbean (North American-Proto Atlantic) lithosphere subducted beneath the Greater Antilles arc during the Late Cretaceous (pre-Campanian), consistent with geotectonic models involving onset of SW-dipping subduction beneath the Greater Antilles paleo-arc during the Aptian. The variable mantle source depletion and magnitude of the subduction component probably reflect different settings across the arc, from the arc front to a back-arc spreading ridge. C1 Univ Granada, Fac Ciencias, Dept Mineral & Petrol, E-18002 Granada, Spain. Univ Granada, Fac Ciencias, CSIC, Inst Andaluz Ciencias Tierra, E-18002 Granada, Spain. Univ Montpellier 2, CNRS, UMR 5243, F-34095 Montpellier, France. Univ Barcelona, Fac Geol, Dept Crystallog Mineral & Deposits Minerals, E-08028 Barcelona, Spain. Inst Super Mineromet, Dept Geol, Moa 83320, Cuba. RP Marchesi, C, Univ Granada, Fac Ciencias, Dept Mineral & Petrol, Avenida Fuentenueva S-N, E-18002 Granada, Spain. EM claudio@ugr.es NR 104 TC 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0022-3530 J9 J PETROL JI J. Petrol. PD SEP PY 2007 VL 48 IS 9 BP 1813 EP 1840 DI 10.1093/petrology/egm040 PG 28 SC Geochemistry & Geophysics GA 215QB UT ISI:000249823000006 ER PT J AU Molina, E Tamayo, M AF Molina, Eustoquio Tamayo, Manuel TI Arguments and scientific interdisciplinary data about the imperfections of evolutionary design SO INTERCIENCIA LA English DT Article ID MAMMALIAN MIDDLE-EAR AB The intelligent design argument is very weak because it can be formulated inversely. In this way, some imperfections of the universe and the Earth, the geological chronology of the appearance of life in millions of years, the existence of intermediate fossil forms and species are made evident. Besides, quite relevant examples of phylogenies and numerous examples about the way that some living species were designed by evolution also exist. It is shown that the evolution of the organisms is far front being perfect, as it would have been created by an intelligent designer instantaneously with new organs and with all the materials available. However it is sufficiently good to adapt the organism to the new environmental needs. Natural selection is blind, but it is not final, lacks forethought and takes advantage of restricted organs of the ancestors and their immediate advantage; therefore, the initial simple models, have been improved through time and, sometimes, they diversify towards unexpected goals. These interdisciplinary data, mainly geological and biological, contradict the arguments of intelligent design, such as its supposition of an irreducible complexity. C1 Univ Zaragoza, Dept Ciencias Tierra, E-50009 Zaragoza, Spain. Univ Zaragoza, Catedrat Paleontol, E-50009 Zaragoza, Spain. Univ Granada, E-18071 Granada, Spain. Univ Chile, Santiago, Chile. Univ Catolica Maule, Talca, Chile. RP Molina, E, Univ Zaragoza, Dept Ciencias Tierra, E-50009 Zaragoza, Spain. EM emolina@unizar.es mtamayo@ucm.cl NR 42 TC 1 PU INTERCIENCIA PI CARACAS PA APARTADO 51842, CARACAS 1050A, VENEZUELA SN 0378-1844 J9 INTERCIENCIA JI Interciencia PD SEP PY 2007 VL 32 IS 9 BP 635 EP 642 PG 8 SC Multidisciplinary Sciences GA 217OA UT ISI:000249956000011 ER PT J AU Vargas, F Soldan, OCP Marin, C Rosales, MJ Sanchez-Gutierrez, R Sanchez-Moreno, M AF Vargas, F. Paz Soldan, O. Cordova Marin, C. Rosales, M. Jose Sanchez-Gutierrez, R. Sanchez-Moreno, M. TI Epidemiology of American trypanosomiasis in northern Peru SO ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY LA English DT Article ID PANSTRONGYLUS-GENICULATUS LATREILLE; TRIATOMINAE; REDUVIIDAE; CRUZI; STATE C1 Univ Granada, Fac Ciencias, Dept Parasitol, E-18071 Granada, Spain. Univ Nacl Trujillo, Fac Ciencias Biol, Trujillo, Peru. RP Sanchez-Moreno, M, Univ Granada, Fac Ciencias, Dept Parasitol, Severo Ochoa S-N, E-18071 Granada, Spain. EM msanchem@ugr.es NR 17 TC 0 PU MANEY PUBLISHING PI LEEDS PA STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND SN 0003-4983 J9 ANN TROP MED PARASITOL JI Ann. Trop. Med. Parasitol. PD OCT PY 2007 VL 101 IS 7 BP 643 EP 648 DI 10.1179/136485907X229031 PG 6 SC Public, Environmental & Occupational Health; Parasitology; Tropical Medicine GA 218FX UT ISI:000250002500008 ER PT J AU Espin, MJ Delgado, AV Gonzalez-Caballero, F Rejon, L AF Espin, M. J. Delgado, A. V. Gonzalez-Caballero, F. Rejon, L. TI Rheological properties of a model colloidal suspension under large electric fields of different waveforms SO JOURNAL OF NON-NEWTONIAN FLUID MECHANICS LA English DT Article DE electrorheological effect; field waveform; field frequency; conductivity ID HEMATITE/SILICONE OIL SUSPENSIONS; ELECTRORHEOLOGICAL FLUIDS; CONDUCTION MODEL; ELECTROVISCOUS FLUIDS; FREQUENCY; DC AB An investigation of the suitable characteristics of the electric field that maximize the ER effect has been carried out in this work. Rheological parameters (shear stress and viscosity) were determined in dependence of electric fields of different waveforms (square, sinusoidal and triangular), frequency, v, and strength, E, for hematite/silicone oil suspensions under steady shear conditions. It was seen that the ER performance was highly dependent on the waveform of the external field, with a square signal producing the optimal response. The yield stress, tau(y), was almost independent of the field at high frequencies but it sharply increased below 50 Hz. Additionally, it correlated with a power-law dependence, tau(y) = aE(b), where b strongly depends on v: it is b; 2, but it gradually reduces when the frequency increases. The experimental data could be qualitatively explained according to the interfacial polarization mechanism. However, significant deviations from its predictions appeared, which could be only justified when other considerations, in addition to the polarization mechanism are taken into account, specifically, the period of time for which samples are subjected to the maximum voltage, the effect of the particle rotation under shear flow and the frequency-dependent behaviour of the electrical properties of the suspension. (C) 2007 Elsevier B.V. All rights reserved. C1 Univ Seville, Escuela Univ Arquitectura Tecn, Dept Fis Aplicada 2, E-41012 Seville, Spain. Univ Granada, Fac Ciencias, Dept Fis Aplicada, E-18071 Granada, Spain. Inst Invest Elect, Cuernavaca 62490, Morelos, Mexico. RP Espin, MJ, Univ Seville, Escuela Univ Arquitectura Tecn, Dept Fis Aplicada 2, Avda Reina Mercedes 4A, E-41012 Seville, Spain. EM mjespin@us.es NR 48 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0257 J9 J NON-NEWTONIAN FLUID MECH JI J. Non-Newton. Fluid Mech. PD OCT 25 PY 2007 VL 146 IS 1-3 SI Sp. Iss. SI BP 125 EP 135 DI 10.1016/j.jnnfm.2007.01.007 PG 11 SC Mechanics GA 218SE UT ISI:000250034400012 ER PT J AU Jara, E Maldonado, A Vila, J AF Jara, Elvia Maldonado, Antonio Vila, Javier TI Causal inference and learning processes in second order conditioning SO PSICOLOGICA LA Spanish DT Article ID FREQUENCY; JUDGMENT; HUMANS AB The main objective of this study was twofold. Experiment I showed the reliability of second-order conditioning (SOC) in causal learning tasks. Experiment 2 confirmed that post-conditioning extinction of the first-order causal relationships does not have the same extinction effect on the causal relationships between the second-order cue and the effect. The important contributions of second experiment were firstly, that during the extinction phase in one condition, the excitation level of acquisition Was conserved in the other condition; finally, participants not only should judge the second-order relationships but also those of first-order extinguished or not during the test phase. The results confirmed that extinguishing the first-order relationship, does not generate the extinction of the second-order one (SOC), although it produced an attenuation of the strength of the second-order causal relationship. These results accords with associative models explaining SOC in animal conditioning based upon relatively independent associations between conditioned and unconditioned stimuli. In a similar way, they also suggest the possibility that people were learning independent rather than chained causal relationships during SOC learning. C1 Univ Nacl Autonoma Mexico, FES Iztacala, Mexico City 04510, DF, Mexico. Univ Granada, E-18071 Granada, Spain. RP Vila, J, Univ Nacl Autonoma Mexico, FES Iztacala, Mexico City 04510, DF, Mexico. EM javila@cablevision.net.mx NR 19 TC 0 PU UNIV VALENCIA, DEPT METODOLGIA, FAC PSICOLOGIA PI VALENCIA PA AVDO BLASCO IBANEZ, 21, VALENCIA, 46010, SPAIN SN 0211-2159 J9 PSICOLOGICA JI Psicologica PY 2007 VL 28 IS 2 BP 215 EP 236 PG 22 SC Psychology, Experimental GA 222JR UT ISI:000250292900007 ER PT J AU Hosaka, K Nakajima, M Monticelli, F Carrilho, M Yamauti, M Aksornmuang, J Nishitani, Y Tayh, FR Pashley, DH Tagami, J AF Hosaka, Keiichi Nakajima, Masatoshi Monticelli, Francesca Carrilho, Marcela Yamauti, Monica Aksornmuang, Juthatip Nishitani, Yoshihiro Tayh, Franklin R. Pashley, David H. Tagami, Junji TI Influence of hydrostatic pulpal pressure on the microtensile bond strength of all-in-one self-etching adhesives SO JOURNAL OF ADHESIVE DENTISTRY LA English DT Article DE dentin; pulpal pressure; all-in-one adhesives; microtensile bond strength ID SINGLE-STEP ADHESIVES; PERMEABLE MEMBRANES; NANOLEAKAGE EXPRESSION; DENTIN ADHESIVES; HYBRID LAYER; SMEAR LAYERS; 2 MODES; WATER; DURABILITY; SYSTEMS AB Purpose: To evaluate the microtensile bond strength (mu TBS) of two all-in-one self-etching adhesive systems and two self etching adhesives with and without simulated hydrostatic pulpal pressure (PP). Materials and Methods: Flat coronal dentin surfaces of extracted human molars were prepared. Two all-in-one self-etching adhesive systems, One-Up Bond F (OBF; Tokuyama) and Clearfil S-3 Bond (Tri-S, Kuraray Medical) and two self-etching primer adhesives, Clearfil Protect Bond (PB; Kuraray) and Clearfil SE Bond (SE; Kuraray) were applied to the dentin surfaces according to manufacturers' instructions under either a pulpal pressure (PP) of zero or 15 cm H(2)0. A hybrid resin composite (Clearfil AP-X, Kuraray) was used for the coronal buildup. Specimens bonded under PP were stored in water at 37 degrees C under 15 cm H20 for 24 h. Specimens not bonded under PP were stored under a PP of zero. After storage, the bonded specimens were sectioned into slabs that were trimmed to hourglass-shaped specimens, and were subjected to microtensile bond testing (mu TBS). The bond strength data were statistically analyzed using two-way ANOVA and the Holm-Sidak method for multiple comparison tests (alpha = 0.05). The surface area percentage of different failure modes for each material was also statistically analyzed with three one-way ANOVAs and Tukey's multiple comparison tests. Results: The mu TBS of OBF and Tri-S fell significantly under PP. However, in the PB and SE bonded specimens under PP, there were no significant differences compared with the control groups without PP. Conclusions: The mu TBS of the two all-in-one adhesive systems decreased when PP was applied. However, the mu TBS of both self-etching primer adhesives did not decrease under PR C1 Tokyo Med & Dent Univ, Dept Restorat Sci, Tokyo, Japan. Univ Granada, Sch Dent, Dept Dent Mat, Granada, Spain. Univ Siena, Dept Restorat Dent & Dent Mat, Policlin Le Scotte, I-53100 Siena, Italy. Univ Estadual Campinas, Piracicaba Sch Dent, Dept Restorat Dent, Campinas, Brazil. FEAD, Sch Dent, Dept Cardiol & Operat Dent, Belo Horizonte, MG, Brazil. Prince Songkla Univ, Fac Dent, Dept Prosthet Dent, Songkhla, Thailand. RP Hosaka, K, Tokyo Med & Dent Univ, Dept Restorat Sci, Bunkyo Ku, 1-5-45 Yushima, Tokyo 1138549, Japan. EM hosaka.ope@tmd.ac.jp NR 38 TC 0 PU QUINTESSENCE PUBLISHING CO INC PI HANOVER PARK PA 4350 CHANDLER DRIVE, HANOVER PARK, IL 60133 USA SN 1461-5185 J9 J ADHES DENT JI J. Adhes. Dent. PD OCT PY 2007 VL 9 IS 5 BP 437 EP 442 PG 6 SC Dentistry, Oral Surgery & Medicine GA 222LO UT ISI:000250298900004 ER PT J AU Do Campo, M del Papa, C Jimenez-Millan, J Nieto, F AF Do Campo, M. del Papa, C. Jimenez-Millan, J. Nieto, F. TI Clay mineral assemblages and analcime formation in a Palaeogene fluvial-lacustrine sequence (Maiz Gordo Formation Palaeogen) from northwestern Argentina SO SEDIMENTARY GEOLOGY LA English DT Article DE palaeogene; Kaolinite; analcime; X-ray diffraction; alkaline lakes; Argentina ID LAKE-MARGIN; BASIN SPAIN; K-FELDSPAR; ZEOLITES; SEDIMENTARY; CLINOPTILOLITE; DIAGENESIS; TRANSFORMATION; STABILITY; MUDSTONES AB The Palaeogene Maiz Gordo Formation is one of the main lacustrine events recorded in northwestern Argentina. It consists of sandstone, mudstone, and limestone beds 200 m thick, deposited in a brackish-alkaline lake and braided alluvial systems. The Maiz Gordo Lake evolved mainly as a closed system, with brief periods as an open one. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to study samples from seven sites, corresponding respectively to proximal, intermediate, and transitional positions of the fluvial environment and marginal and inner-lake environment, focusing on the clay mineralogy and analcime formation. The basinward zonation of diagenetic minerals identified in the Maiz Gordo Lake was: mordenite -> analcime K-feldspar. Although not a typical zonation of saline-alkaline lakes, it does indicate an increase in salinity and alkalinity towards the centre. In proximal fluvial settings, smectite predominates at the base of the sequence, with scarce kaolinite. Towards the top, a striking increase in kaolinite content suggests a change from a relatively and climate with alternating humid and dry seasons, towards a warm and humid climate. Kaolinite content clearly decreases in a basinward direction. Such a variation is attributable to changes in hydro-geochemistry denoting the progressive influence of the brackish and alkaline lake water on interstitial pores. SEM images of intermediate fluvial samples reveal authigenesis of illite at the expense of kaolinite booklets. In littoral and inner-lake settings the clay fraction is composed of muscovite, sometimes with subordinate smectite. Analcime occurs in variable amounts in all sedimentary facies, in rock pores or filling veins. It forms subhedral square to hexagonal, or anhedral rounded crystals, denoting that they coarsened at low to moderate degrees of supersaturation. Although the mordenite identified in a fluvial level would have been the precursor of analcime in the Maiz Gordo Basin, no textural evidence of analcime formation through replacement of mordenite or other precursor zeolite was found. Hence it is more probable that analcime formation took place by direct authigenic precipitation or through the reaction between interstitial brines and clay minerals or plagioclase. (C) 2007 Elsevier B.V. All rights reserved. C1 Univ Buenos Aires, INGEIS, RA-1428 Buenos Aires, DF, Argentina. Univ Buenos Aires, CONICET, FCEN, Dept Geol, RA-1428 Buenos Aires, DF, Argentina. Univ Nacl Salta, Fac Ciencias Nat, CONICET, RA-4400 Salta, Argentina. Univ Jaen, Dept Geol, Jaen 23071, Spain. Univ Granada, CSIC, Dept Mineral & Petrol, Granada 18002, Spain. Univ Granada, CSIC, IACT, Granada 18002, Spain. RP Do Campo, M, Univ Buenos Aires, INGEIS, Ciudad Univ, RA-1428 Buenos Aires, DF, Argentina. EM docampo@ingeis.uba.ar NR 51 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0037-0738 J9 SEDIMENT GEOL JI Sediment. Geol. PD SEP 1 PY 2007 VL 201 IS 1-2 BP 56 EP 74 DI 10.1016/j.sedgeo.2007.04.007 PG 19 SC Geology GA 223CK UT ISI:000250347000004 ER PT J AU Mauricio, PJBTDD Gonzalez-Lopez, S Aguilar-Mendoza, JA Felix, S Gonzalez-Rodriguez, MP AF Mauricio, Paolo Joao B. T. de Durao Gonzalez-Lopez, Santiago Aguilar-Mendoza, Jose A. Felix, Sergio Gonzalez-Rodriguez, Maria P. TI Comparison of regional bond strength in root thirds among fiber-reinforced posts luted with different cements SO JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS LA English DT Article DE push-out test; bond strength; endodontic posts ID TOOTH-COLORED POSTS; ENDODONTICALLY TREATED TEETH; SELF-ETCHING ADHESIVE; PUSH-OUT STRENGTH; CANAL DENTIN; IN-VITRO; LUTING AGENTS; GLASS-IONOMER; INTRARADICULAR DENTIN; RESIN CEMENTS AB Aim: To compare regional bond strength in different thirds of the root canal, among glass fiber-reinforced (FRC) endodontic posts luted with different cements, using the push-out test. Material and Methods: Sixty extracted human anterior teeth were endodontically treated with gutta-percha and AH Plus (R) sealer. The crown portion was removed, and a dowel space was prepared. Prepared teeth were randomly assigned to one of six groups (n = 10) for luting glass FRC Postec posts, with one of the six cement systems (Ketac (TM) Cem Aplicap (TM) Relyx (TM) Unicem Aplicap, Variolin (R) II/Excite (R) DCS, Panavia (TM) F/ED Primer, C and B (TM) cement/All-Bond (R) 2, and Multilink (R)/Multilink (R) Primer A/B), using an alignment technique. Specimens were embedded in resin, and each root was sectioned into six 1-mm thick serial slices. A push-out test was performed to measure regional bond strengths and to identify the type of failure. Results: The highest bond strength values were found in the cervical third and the lowest in the apical third. Highest values were obtained using Variolink II, Panavia F (R), and Multilink (R) resin cements followed by C and B (TM) m resin cement and Relyx Unicem (TM) ionomer resin cement; Ketac-cem (R) ionomer cement showed the lowest value. Conclusion: Highest bond strength values were obtained in the cervical third and with resin cements. (C) 2007 Wiley Periodicals. Inc. C1 Inst Super Ciencias Saude Egas Moniz, Lisbon, Portugal. Univ Granada, Sch Dent, Dept Pathol & Dent Therapeut, E-18071 Granada, Spain. Univ Peruana Cayetano Heredia, Sch Dent, Lima, Peru. RP Gonzalez-Lopez, S, Inst Super Ciencias Saude Egas Moniz, Campus Univ Quinta Granja 2829 511 Mt Caparica, Lisbon, Portugal. EM sglopez@ugr.es NR 55 TC 1 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 1552-4973 J9 J BIOMED MATER RES PART B JI J. Biomed. Mater. Res. Part B PD NOV PY 2007 VL 83B IS 2 BP 364 EP 372 DI 10.1002/jbm.b.30805 PG 9 SC Engineering, Biomedical; Materials Science, Biomaterials GA 224DF UT ISI:000250425400011 ER PT J AU Burguera-Pascu, M Rodriguez-Archilla, A Burguera, JL Burguera, M Rondon, C Carrero, P AF Burguera-Pascu, Margarita Rodriguez-Archilla, Alberto Burguera, Jose Luis Burguera, Marcela Rondon, Carlos Carrero, Pablo TI Flow injection on-line dilution for zinc determination in human saliva with electrothermal atomic absorption spectrometry detection SO ANALYTICA CHIMICA ACTA LA English DT Article DE on-line dilution; flow injection-electrothermal atomic absorption spectrometry (FI-ET AAS); saliva samples; baseline zinc levels; contamination-free determination ID MICROWAVE-ASSISTED MINERALIZATION; SPECTROPHOTOMETRIC DETERMINATION; ANALYSIS SYSTEM; MULTIELEMENT DETERMINATION; LUBRICATING OILS; PAROTID-SALIVA; DYNAMIC-RANGE; ICP-MS; CALCIUM; ACID AB An automated method is described for the determination of zinc in human saliva by electrothermal atomic absorption spectrometry (ET AAS) after on-line dilution of samples with a significant reduction of sample consumption per analysis (<0.4mL including the dead volume of the system). in order to fulfill this aim without changing the sample transport conduits during the experiments, a flow injection (FI) dilution system was constructed. Its principal parts are: one propulsion device (peristaltic pump, PP) for either samples, standards or washing solution all located in an autosampler tray and for the surfactant solution (Triton X-100) used as diluent, and a two-position time based solenoid injector (TBSI1) which allowed the introduction of 10 mu L of either solution in the diluent stream. To avoid unnecessary waste of samples, the TBSI, also permitted the recirculation of the solutions to their respective autosampler cups. The downstream diluted solution fills a home made sampling arm assembly. The sequential deposition of 20 mu L, aliquots of samples or standards on the graphite tube platform was carried out by air displacement with a similar time based solenoid injector (TBSI2). The dilution procedure and the injection of solutions into the atomizer are computer controlled and synchronized with the operation of the temperature program. Samples or standards solutions were submitted to two drying steps (at 90 and 130 degrees C), followed by pyrolysis and atomization at 700 and 1700 degrees C, respectively. The aqueous calibration was linear up to 120.0 mu g L-1 for diluted standard solutions/samples and its slope was similar (p > 0.05) to the standard addition curve, indicating lack of matrix effect. The precision tested by repeated analysis of real saliva samples was less than 3% and the detection limit (3 sigma) was of 0.35 mu gL(-1). To test the accuracy of the proposed procedure, recovery tests were performed, obtaining mean recovery of added zinc of 97.8 +/- 1.3%. Furthermore, Zn values estimated by the procedure developed in this work were compared with those obtained by a standard addition flame-AAS method applied to 20 randomly selected saliva samples. No significant differences (p > 0.05) were obtained between the two methods. Zinc levels in saliva samples from 44 healthy volunteers, 15 male and 29 female, with ages between 20 and 51 years (mean 30.50 +/- 9.14 years) were in the range 22-98 mu g L-1 (mean of 55 17 mu g L-1), similar to some and different from others reported in the literature. It was found that zinc values for male were statistically higher (p = 0.006) than for female. (C) 2006 Elsevier B.V. All rights reserved. C1 Univ Granada, Sch Dent, Dept Oral Med, Granada, Spain. Univ Los Andes, Fac Sci, Dept Chem, Merida, Venezuela. RP Burguera-Pascu, M, Univ Granada, Sch Dent, Dept Oral Med, Granada, Spain. EM margaburpas@hotmail.com NR 33 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0003-2670 J9 ANAL CHIM ACTA JI Anal. Chim. Acta PD SEP 26 PY 2007 VL 600 IS 1-2 BP 214 EP 220 DI 10.1016/j.aca.2006.10.021 PG 7 SC Chemistry, Analytical GA 224OY UT ISI:000250457500032 ER PT J AU Wilson, MA Martinez-Cuitino, M Defior, S Weekes, BS AF Wilson, Maximiliano A. Martinez-Cuitino, Macarena Defior, Sylvia Weekes, Brendan S. TI Dissociable effects of grammatical class in acquired dysgraphia: Evidence from Spanish SO BRAIN AND LANGUAGE LA English DT Meeting Abstract ID REPRESENTATION; BRAIN; NOUN C1 Univ Buenos Aires, CONICET, RA-1053 Buenos Aires, DF, Argentina. Univ Buenos Aires, INECO, Buenos Aires, DF, Argentina. Univ Granada, E-18071 Granada, Spain. Univ Sussex, Dept Psychol, Brighton BN1 9RH, E Sussex, England. EM B.S.Weekes@sussex.ac.uk NR 9 TC 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0093-934X J9 BRAIN LANG JI Brain Lang. PD OCT-NOV PY 2007 VL 103 IS 1-2 BP 103 EP 104 DI 10.1016/j.bandl.2007.07.065 PG 2 SC Linguistics; Neurosciences; Psychology, Experimental GA 227MF UT ISI:000250660100048 ER PT J AU De Leon, J Diaz, FJ AF de Leon, Jose Diaz, Francisco J. TI Planning for the optimal design of studies to personalize antipsychotic prescriptions in the post-CATIE era: The clinical and pharmacoepidemiological data suggest that pursuing the pharmacogenetics of metabolic syndrome complications (hypertension, diabetes mellitus and hyperlipidemia) may be a reasonable strategy SO SCHIZOPHRENIA RESEARCH LA English DT Article DE pharmacogenetics; antipsychotic; hypertension; hyperglycernia; Hyperlipidemia; weight gain; lipids; diabetes mellitus; obesity; metabolic syndrome ID INDUCED WEIGHT-GAIN; SCHIZOPHRENIA TRIAL; ATYPICAL ANTIPSYCHOTICS; PSYCHIATRIC-INPATIENTS; CHOLESTEROL LEVELS; LIPID PROFILES; BASE-LINE; OLANZAPINE; CLOZAPINE; GLUCOSE AB The variability of individual responses reported by the CATIE study has raised awareness of the need to reconsider personalizing prescriptions of antipsychotic medications for the purpose of establishing the best antipsycbotic for each individual patient. As atypical antipsychotics are widely prescribed for severe mental illnesses other than schizophrenia and side effects are largely independent from diagnosis, personalizing antipsychotic dosing may have important public health implications. This hypothesis article emphasizes that, whereas other psychiatric medications may cause weight gain, antipsychotics appear to have additional effects. Antipsychotics may have direct effects (not explained by obesity) on hypertension, diabetes mellitus and hyperlipidemia. The clinical and pharmacoepidernio logical literature appears to suggest that (1) antipsychotics rarely increase blood pressure, with the probable exception of clozapine; (2) antipsychotics (particularly clozapine and olanzapine) may interfere with glucose metabolism in a (still unknown) direct way, independently of their effects on obesity; and (3) clozapine and olanzapine (and possibly quetiapine and low-potency typical antipsychotics) may directly cause hyperlipidemia, independently of their effects on obesity. This commentary focuses on the effect sizes and the time interval/event sequence of the direct influences of antipsychotics on blood pressure, glucose metabolism and lipid metabolism. Cross-sectional lipid studies may show antipsychotic effects. It is hypothesized that it may be easier to design studies focusing on these three aspects than to design pharmacogenetic studies focusing on antipsychotic-induced weight gain or metabolic syndrome, which require long-term follow-up. (C) 2007 Elsevier B.V. All rights reserved. C1 Univ Kentucky, Mental Hlth Res Ctr, Eastern State Hosp, Lexington, KY 40508 USA. Univ Granada, Dept Psychiat, Granada, Spain. Univ Granada, Inst Neurosci, Granada, Spain. Univ Nacl, Dept Stat, Medellin, Colombia. RP De Leon, J, Univ Kentucky, Mental Hlth Res Ctr, Eastern State Hosp, 627 W 4th St, Lexington, KY 40508 USA. EM jdeleon@uky.edu NR 83 TC 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-9964 J9 SCHIZOPHR RES JI Schizophr. Res. PD NOV PY 2007 VL 96 IS 1-3 BP 185 EP 197 DI 10.1016/j.schres.2007.05.020 PG 13 SC Psychiatry GA 227XJ UT ISI:000250690900020 ER PT J AU Abraham, J Abreu, P Aglietta, M Aguirre, C Allard, D Allekotte, I Allen, J Allison, P Alvarez, C Alvarez-Muniz, J Ambrosio, M Anchordoqui, L Andringa, S Anzalone, A Aramo, C Argiro, S Arisaka, K Armengaud, E Arneodo, F Arqueros, F Asch, T Asorey, H Assis, P Atulugama, BS Aublin, J Ave, M Avila, G Backer, T Badagnani, D Barbosa, AF Barnhill, D Barroso, SLC Bauleo, P Beatty, J Beau, T Becker, BR Becker, KH Bellido, JA BenZvi, S Berat, C Bergmann, T Bernardini, P Bertou, X Biermann, PL Billoir, P Blanch-Bigas, O Blanco, F Blasi, P Bleve, C Blumer, H Bohacova, M Bonifazi, C Bonino, R Boratav, M Brack, J Brogueira, P Brown, WC Buchholz, P Bueno, A Busca, NG Caballero-Mora, KS Cai, B Camin, DV Caruso, R Carvalho, W Castellina, A Catalano, O Cataldi, G Cazon-Boado, L Cester, R Chauvin, J Chiavassa, A Chinellato, JA Chou, A Chye, J Clark, PDJ Clay, RW Colombo, E Conceicao, R Connolly, B Contreras, F Coppens, J Cordier, A Cotti, U Coutu, S Covault, CE Creusot, A Cronin, J Dagoret-Campagne, S Daumiller, K Dawson, BR de Almeida, RM De Donato, C de Jong, SJ De la Vega, G de Mello, JM de Mello, JRT De Mitri, I de Souza, V del Peral, L Deligny, O Della Selva, A Delle Fratte, C Dembinski, H Di Giulio, C Diaz, JC Dobrigkeit, C D'Olivo, JC Dornic, D Dorofeev, A dos Anjos, JC Dova, MT D'Urso, D DuVernois, MA Engel, R Epele, L Erdmann, M Escobar, CO Etchegoyen, A San Luis, PF Falcke, H Farrar, G Fauth, AC Fazzini, N Fernandez, A Farrar, G Fauth, AC Fazzini, N Fernandez, A Ferrer, F Ferry, S Fick, B Filevich, A Filipcic, A Fleck, I Fonte, R Fracchiolla, CE Fulgione, W Garcia, B Gamez, DG Garcia-Pinto, D Garrido, X Geenen, H Gelmini, G Gemmeke, H Ghia, PL Giller, M Glass, H Gold, MS Golup, G Albarracin, FG Berisso, MG Herrero, RG Goncalves, P do Amaral, MG Gonzalez, D Gonzalez, JG Gonzalez, M Gora, D Gorgi, A Gouffon, P Grassi, V Grillo, A Grunfeld, C Guardincerri, Y Guarino, F Guedes, GP Gutierrez, J Hague, JD Hamilton, JC Hansen, P Harari, D Harmsma, S Harton, JL Haungs, A Hauschildt, T Healy, MD Hebbeker, T Heck, D Hojvat, C Holmes, VC Homola, P Horandel, J Horneffer, A Horvat, M Hrabovsky, M Huege, T Iarlori, M Insolia, A Ionita, F Italiano, A Kaducak, M Kampert, KH Keilhauer, B Kemp, E Kieckhafer, RM Klages, HO Kleifges, M Kleinfeller, J Knapik, R Knapp, J Koang, DH Kopmann, A Krieger, A Kromer, D Kumpel, D Kunka, N Kusenko, A La Rosa, G Lachaud, C Lago, BL Lebrun, D LeBrun, P Lee, J Leigui de Oliveira, MA Letessier-Selvon, A Leuthold, M Lhenry-Yvon, I Lopez, R Aguera, AL Bahilo, JL Maccarone, MC Macolino, C Maldera, S Malek, M Mancarella, G Mancenido, ME Mandat, D Mantsch, P Mariazzi, AG Maris, IC Martello, D Martinez, J Bravo, OM Mathes, HJ Matthiae, G Maurizio, D Mazur, PO McCauley, T McEwen, M McNeil, RR Medina, MC Medina-Tanco, G Meli, A Melo, D Menichetti, E Menschikov, A Meurer, C Meyhandan, R Micheletti, MI Miele, G Miller, W Mollerach, S Monasor, M Ragaigne, DM Montanet, F Morales, B Morello, C Moreno, E Moreno, JC Morris, C Mostafa, M Muller, MA Mussa, R Navarra, G Navarro, JL Navas, S Nellen, L Newman-Holmes, C Newton, D Thi, TN Nierstenhofer, N Nitz, D Nosek, D Nozka, L Oehlschlager, J Ohnuki, T Olinto, A Olmos-Gilbaja, VM Ortiz, M Ostapchenko, S Otero, L Selmi-Dei, DP Palatka, M Pallotta, J Parente, G Parizot, E Parlati, S Pastor, S Patel, M Paul, T Pavlidou, V Payet, K Pech, M Pekala, J Pelayo, R Pepe, IM Perrone, L Petrera, S Petrinca, P Petrov, Y Ngoc, DP Ngoc, DP Thi, TNP Pichel, A Piegaia, R Pierog, T Pimenta, M Pinto, T Pirronello, V Pisanti, O Platino, M Pochon, J Porter, TA Privitera, P Prouza, M Quel, EJ Rautenberg, J Reucroft, S Revenu, B Rezende, FAS Ridky, J Riggi, S Risse, M Riviere, C Rizi, V Roberts, M Robledo, C Rodriguez, G Frias, D Martino, JR Rojo, JR Rodriguez-Cabo, I Ros, G Rosado, J Roth, M Rouille-d'Orfeuil, B Roulet, E Rovero, AC Salamida, F Salazar, H Salina, G Sanchez, F Santander, M Santo, CE Santos, EM Sarazin, F Sarkar, S Sato, R Scherini, V Schieler, H Schmidt, F Schmidt, T Scholten, O Schovanek, P Schussler, F Sciutto, SJ Scuderi, M Segreto, A Semikoz, D Settimo, M Shellard, RC Sidelnik, I Siffert, BB Sigl, G De Grande, NS Smialkowski, A Smida, R Smith, AGK Smith, BE Snow, GR Sokolsky, P Sommers, P Sorokin, J Spinka, H Squartini, R Strazzeri, E Stutz, A Suarez, F Suomijarvi, T Supanitsky, AD Sutherland, MS Swain, J Szadkowski, Z Takahashi, J Tamashiro, A Tamburro, A Tascau, O Tcaciuc, R Thomas, D Ticona, R Tiffenberg, J Timmermans, C Tkaczyk, W Peixoto, CJ Tome, B Tonachini, A Torresi, D Travnicek, P Tripathi, A Tristram, G Tscherniakhovski, D Tueros, M Tunnicliffe, V Ulrich, R Unger, M Urban, M Galicia, JFV Valino, I Valore, L van den Berg, AM van Elewyck, V Vazquez, RA Veberic, D Veiga, A Velarde, A Venters, T Verzi, V Videla, M Villasenor, L Vorobiov, S Voyvodic, L Wahlberg, H Wainberg, O Waldenmaier, T Walker, P Warner, D Watson, AA Westerhoff, S Wieczorek, G Wiencke, L Wilczynska, B Wilczynski, H Wileman, C Winnick, MG Wu, H Wundheiler, B Xu, J Yamamoto, T Younk, P Zas, E Zavrtanik, D Zavrtanik, M Zech, A Zepeda, A Ziolkowski, M AF Abraham, J. Abreu, P. Aglietta, M. Aguirre, C. Allard, D. Allekotte, I. Allen, J. Allison, P. Alvarez, C. Alvarez-Muniz, J. Ambrosio, M. Anchordoqui, L. Andringa, S. Anzalone, A. Aramo, C. Argiro, S. Arisaka, K. Armengaud, E. Arneodo, F. Arqueros, F. Asch, T. Asorey, H. Assis, P. Atulugama, B. S. Aublin, J. Ave, M. Avila, G. Baecker, T. Badagnani, D. Barbosa, A. F. Barnhill, D. Barroso, S. L. C. Bauleo, P. Beatty, J. Beau, T. Becker, B. R. Becker, K. H. Bellido, J. A. BenZvi, S. Berat, C. Bergmann, T. Bernardini, P. Bertou, X. Biermann, P. L. Billoir, P. Blanch-Bigas, O. Blanco, F. Blasi, P. Bleve, C. Bluemer, H. Bohacova, M. Bonifazi, C. Bonino, R. Boratav, M. Brack, J. Brogueira, P. Brown, W. C. Buchholz, P. Bueno, A. Busca, N. G. Caballero-Mora, K. S. Cai, B. Camin, D. V. Caruso, R. Carvalho, W. Castellina, A. Catalano, O. Cataldi, G. Cazon-Boado, L. Cester, R. Chauvin, J. Chiavassa, A. Chinellato, J. A. Chou, A. Chye, J. Clark, P. D. J. Clay, R. W. Colombo, E. Conceicao, R. Connolly, B. Contreras, F. Coppens, J. Cordier, A. Cotti, U. Coutu, S. Covault, C. E. Creusot, A. Cronin, J. Dagoret-Campagne, S. Daumiller, K. Dawson, B. R. de Almeida, R. M. De Donato, C. de Jong, S. J. De La Vega, G. de Mello Junior, J. M. de Mello Neto, J. R. T. De Mitri, I. de Souza, V. del Peral, L. Deligny, O. Della Selva, A. Delle Fratte, C. Dembinski, H. Di Giulio, C. Diaz, J. C. Dobrigkeit, C. D'Olivo, J. C. Dornic, D. Dorofeev, A. dos Anjos, J. C. Dova, M. T. D'Urso, D. DuVernois, M. A. Engel, R. Epele, L. Erdmann, M. Escobar, C. O. Etchegoyen, A. San Luis, P. Facal Falcke, H. Farrar, G. Fauth, A. C. Fazzini, N. Fernandez, A. Farrar, G. Fauth, A. C. Fazzini, N. Fernandez, A. Ferrer, F. Ferry, S. Fick, B. Filevich, A. Filipcic, A. Fleck, I. Fonte, R. Fracchiolla, C. E. Fulgione, W. Garcia, B. Garcia Gamez, D. Garcia-Pinto, D. Garrido, X. Geenen, H. Gelmini, G. Gemmeke, H. Ghia, P. L. Giller, M. Glass, H. Gold, M. S. Golup, G. Gomez Albarracin, F. Gomez Berisso, M. Gomez Herrero, R. Goncalves, P. Goncalves do Amaral, M. Gonzalez, D. Gonzalez, J. G. Gonzalez, M. Gora, D. Gorgi, A. Gouffon, P. Grassi, V. Grillo, A. Grunfeld, C. Guardincerri, Y. Guarino, F. Guedes, G. P. Gutierrez, J. Hague, J. D. Hamilton, J. C. Hansen, P. Harari, D. Harmsma, S. Harton, J. L. Haungs, A. Hauschildt, T. Healy, M. D. Hebbeker, T. Heck, D. Hojvat, C. Holmes, V. C. Homola, P. Hoerandel, J. Horneffer, A. Horvat, M. Hrabovsky, M. Huege, T. Iarlori, M. Insolia, A. Ionita, F. Italiano, A. Kaducak, M. Kampert, K. H. Keilhauer, B. Kemp, E. Kieckhafer, R. M. Klages, H. O. Kleifges, M. Kleinfeller, J. Knapik, R. Knapp, J. Koang, D.-H. Kopmann, A. Krieger, A. Kroemer, O. Kuempel, D. Kunka, N. Kusenko, A. La Rosa, G. Lachaud, C. Lago, B. L. Lebrun, D. LeBrun, P. Lee, J. Leigui de Oliveira, M. A. Letessier-Selvon, A. Leuthold, M. Lhenry-Yvon, I. Lopez, R. Lopez Aguera, A. Lozano Bahilo, J. Maccarone, M. C. Macolino, C. Maldera, S. Malek, M. Mancarella, G. Mancenido, M. E. Mandat, D. Mantsch, P. Mariazzi, A. G. Maris, I. C. Martello, D. Martinez, J. Martinez Bravo, O. Mathes, H. J. Matthiae, G. Maurizio, D. Mazur, P. O. McCauley, T. McEwen, M. McNeil, R. R. Medina, M. C. Medina-Tanco, G. Meli, A. Melo, D. Menichetti, E. Menschikov, A. Meurer, Chr. Meyhandan, R. Micheletti, M. I. Miele, G. Miller, W. Mollerach, S. Monasor, M. Ragaigne, D. Monnier Montanet, F. Morales, B. Morello, C. Moreno, E. Moreno, J. C. Morris, C. Mostafa, M. Muller, M. A. Mussa, R. Navarra, G. Navarro, J. L. Navas, S. Nellen, L. Newman-Holmes, C. Newton, D. Thi, T. Nguyen Nierstenhoefer, N. Nitz, D. Nosek, D. Nozka, L. Oehlschlaeger, J. Ohnuki, T. Olinto, A. Olmos-Gilbaja, V. M. Ortiz, M. Ostapchenko, S. Otero, L. Selmi-Dei, D. Pakk Palatka, M. Pallotta, J. Parente, G. Parizot, E. Parlati, S. Pastor, S. Patel, M. Paul, T. Pavlidou, V. Payet, K. Pech, M. Pekala, J. Pelayo, R. Pepe, I. M. Perrone, L. Petrera, S. Petrinca, P. Petrov, Y. Ngoc, DiepPham Ngoc, DongPham Thi, T. N. Pham Pichel, A. Piegaia, R. Pierog, T. Pimenta, M. Pinto, T. Pirronello, V. Pisanti, O. Platino, M. Pochon, J. Porter, T. A. Privitera, P. Prouza, M. Quel, E. J. Rautenberg, J. Reucroft, S. Revenu, B. Rezende, F. A. S. Ridky, J. Riggi, S. Risse, M. Riviere, C. Rizi, V. Roberts, M. Robledo, C. Rodriguez, G. Rodriguez Frias, D. Rodriguez Martino, J. Rodriguez Rojo, J. Rodriguez-Cabo, I. Ros, G. Rosado, J. Roth, M. Rouille-d'Orfeuil, B. Roulet, E. Rovero, A. C. Salamida, F. Salazar, H. Salina, G. Sanchez, F. Santander, M. Santo, C. E. Santos, E. M. Sarazin, F. Sarkar, S. Sato, R. Scherini, V. Schieler, H. Schmidt, F. Schmidt, T. Scholten, O. Schovanek, P. Schuessler, F. Sciutto, S. J. Scuderi, M. Segreto, A. Semikoz, D. Settimo, M. Shellard, R. C. Sidelnik, I. Siffert, B. B. Sigl, G. De Grande, N. Smetniansky Smialkowski, A. Smida, R. Smith, A. G. K. Smith, B. E. Snow, G. R. Sokolsky, P. Sommers, P. Sorokin, J. Spinka, H. Squartini, R. Strazzeri, E. Stutz, A. Suarez, F. Suomijarvi, T. Supanitsky, A. D. Sutherland, M. S. Swain, J. Szadkowski, Z. Takahashi, J. Tamashiro, A. Tamburro, A. Tascau, O. Tcaciuc, R. Thomas, D. Ticona, R. Tiffenberg, J. Timmermans, C. Tkaczyk, W. Todero Peixoto, C. J. Tome, B. Tonachini, A. Torresi, D. Travnicek, P. Tripathi, A. Tristram, G. Tscherniakhovski, D. Tueros, M. Tunnicliffe, V. Ulrich, R. Unger, M. Urban, M. Valdes Galicia, J. F. Valino, I. Valore, L. van den Berg, A. M. van Elewyck, V. Vazquez, R. A. Veberic, D. Veiga, A. Velarde, A. Venters, T. Verzi, V. Videla, M. Villasenor, L. Vorobiov, S. Voyvodic, L. Wahlberg, H. Wainberg, O. Waldenmaier, T. Walker, P. Warner, D. Watson, A. A. Westerhoff, S. Wieczorek, G. Wiencke, L. Wilczynska, B. Wilczynski, H. Wileman, C. Winnick, M. G. Wu, H. Wundheiler, B. Xu, J. Yamamoto, T. Younk, P. Zas, E. Zavrtanik, D. Zavrtanik, M. Zech, A. Zepeda, A. Ziolkowski, M. CA Pierre Auger Collaboration TI Correlation of the highest-energy cosmic rays with nearby extragalactic objects SO SCIENCE LA English DT Article ID SPECTRUM AB Using data collected at the Pierre Auger Observatory during the past 3.7 years, we demonstrated a correlation between the arrival directions of cosmic rays with energy above 6 x 10(19) electron volts and the positions of active galactic nuclei (AGN) lying within similar to 75 megaparsecs. We rejected the hypothesis of an isotropic distribution of these cosmic rays with at least a 99% confidence level from a prescribed a priori test. The correlation we observed is compatible with the hypothesis that the highest-energy particles originate from nearby extragalactic sources whose flux has not been substantially reduced by interaction with the cosmic background radiation. AGN or objects having a similar spatial distribution are possible sources. C1 Univ Tecnol Nacl Reg Mendoza & San Rafael, RA-5500 Mendoza, Argentina. Lab Instrumentacao & Fis Expt Particulas, P-1000119 Lisbon, Portugal. Inst Super Tecn, P-1000119 Lisbon, Portugal. Univ Turin, Ist Fis Spazio Interplanetario, I-10125 Turin, Italy. Sez INFN, I-10125 Turin, Italy. Univ Catolica Bolivia, La Paz, Bolivia. Univ Paris 07, Lab AstroParticule & Cosmol, IN2P3, CNRS, F-75231 Paris 05, France. Comis Nacl Energia Atom, Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina. Inst Balseiro, UNCuyo, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina. NYU, New York, NY 10027 USA. Ohio State Univ, Columbus, OH 43210 USA. Benernerita Univ Autonoma Puebla, Puebla, Mexico. Univ Santiago de Compostela, E-15782 Santiago De Compostela, Spain. Sez INFN Napoli, I-80126 Naples, Italy. Northeastern Univ, Boston, MA 02115 USA. Univ Wisconsin, Milwaukee, WI 53201 USA. Ist Astrofis Spaziale & Fis Cosm Palermo, INAF, I-90146 Palermo, Italy. Univ Calif Los Angeles, Los Angeles, CA 90095 USA. Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Laquila, Italy. Univ Complutense Madrid, E-28040 Madrid, Spain. Forschungszentrum Karlsruhe, Inst Prozessdatenverarbeitung & Elekt, D-76021 Karlsruhe, Germany. Penn State Univ, University Pk, PA 16802 USA. Univ Paris 06, Lab Phys Nucl & Hautes Energies, F-75252 Paris 05, France. Univ Paris 07, F-75252 Paris 05, France. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Pierre Auger So Observ, RA-5613 Mendoza, Argentina. Univ Siegen, D-57068 Siegen, Germany. Natl Univ La Plata, Inst Fis Plata, Consejo Nacl Invest Cient & Tecn, RA-1900 La Plata, Argentina. Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil. Univ Estadual Sudoeste Bahia, BR-45083900 Vitoria da Conquista, BA, Brazil. Colorado State Univ, Ft Collins, CO 80523 USA. Univ New Mexico, Albuquerque, NM 87131 USA. Berg Univ Wuppertal, D-42097 Wuppertal, Germany. Columbia Univ, New York, NY 10027 USA. CNRS, IN2P3, Lab Phys Subatom & Cosmol, F-38026 Grenoble, France. Univ Karlsruhe TH, Inst Expt Kernphys, D-76128 Karlsruhe, Germany. Univ Salento, I-73100 Lecce, Italy. Sez INFN, I-73100 Lecce, Italy. Max Planck Inst Radioastron, D-53121 Bonn, Germany. Univ Aquila, I-67010 Coppito, Aquila, Italy. Sez INFN, I-67010 Coppito, Aquila, Italy. Osserv Astrofis Arcetri, I-50125 Florence, Italy. Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England. Forschungszentrum Karlsruhe, Inst Kernphys, D-76021 Karlsruhe, Germany. Acad Sci Czech Republic, Inst Phys, CZ-18221 Prague 8, Czech Republic. Univ Colorado, Boulder, CO 80309 USA. Colorado State Univ, Pueblo, CO 81001 USA. Univ Granada, E-18071 Granada, Spain. Ctr Andaluz Fis Particulas Elementales, E-18071 Granada, Spain. Univ Minnesota, Minneapolis, MN 55455 USA. Univ Milan, I-20133 Milan, Italy. Sez INFN, I-20133 Milan, Italy. Univ Catania, I-95123 Catania, Italy. Sez INFN, I-95123 Catania, Italy. Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil. Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. Michigan Technol Univ, Houghton, MI 49931 USA. Univ Leeds, Inst Integrated Informat Syst, Leeds LS2 9JT, W Yorkshire, England. Univ Adelaide, Adelaide, SA 5005, Australia. Comis Nacl Energia Atom, Ctr Atom Constituyentes, RA-1650 Buenos Aires, DF, Argentina. Radboud Univ Nijmegen, Inst Math Astrophys & Particle Phys, NL-6500 GL Nijmegen, Netherlands. Natl Inst Subatom Phys, NL-1009 DB Amsterdam, Netherlands. Univ Paris 11, CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France. Univ Michoacana, Morelia 58040, Michoacan, Mexico. Case Western Reserve Univ, Cleveland, OH 44106 USA. Univ Nova Gorica, Lab Astroparticle Phys, SI-5000 Nova Gorica, Slovenia. Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil. Univ Alcala de Henares, Madrid 28801, Spain. Univ Paris 11, CNRS, IN2P3, Inst Phys Nucl, F-91898 Orsay, France. Univ Naples Federico 2, I-80126 Naples, Italy. Sez INFN, I-80126 Naples, Italy. Univ Roma II Tor Vergata, I-00133 Rome, Italy. Sez INFN, I-00133 Rome, Italy. Rhein Westfal TH Aachen Univ, Inst Phys 3 A, D-52056 Aachen, Germany. Univ Nacl Autonoma Mexico, Mexico City 01000, DF, Mexico. Louisiana State Univ, Baton Rouge, LA 70803 USA. Univ Hawaii, Honolulu, HI 96822 USA. ASTRON, NL-7990 AA Dwingeloo, Netherlands. Pontificia Univ Catolica, BR-22453500 Rio De Janeiro, Brazil. Univ Lodz, PL-90236 Lodz, Poland. Univ Fed Fluminense, Inst Fis, BR-24210340 Niteroi, RJ, Brazil. Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Mexico City 07000, DF, Mexico. PAN, Inst Nucl Phys, PL-31342 Krakow, Poland. Univ Estadual de Feira Santana, BR-44031460 Feira de Santana, Brazil. Univ Groningen, Kernfys Versneller Inst, NL-9747 AA Groningen, Netherlands. Univ Fed ABC, BR-09210170 Santo Andre, SP, Brazil. Southern Univ, Baton Rouge, LA 70813 USA. Univ Utah, Salt Lake City, UT 84112 USA. Inst Nucl Sci & Technol, Hanoi, Vietnam. Charles Univ Prague, Inst Nucl & Particle Phys, CZ-18000 Prague 8, Czech Republic. Univ Valencia, CSIC, Inst Fis Corpuscular, E-46071 Valencia, Spain. Univ Fed Bahia, BR-40210340 Salvador, BA, Brazil. Consejo Nacl Invest Cient & Tecn, Inst Astron & Fis Espacio, RA-1128 Buenos Aires, DF, Argentina. Colorado Sch Mines, Golden, CO 80401 USA. Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3NP, England. Univ Nebraska, Lincoln, NE 68588 USA. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Wisconsin, Madison, WI 53706 USA. RP Abraham, J, Pierre Auger So Observ, Avenida San Martin Norte 304, RA-5613 Mendoza, Argentina. EM auger_collaboration2@fnal.gov NR 23 TC 29 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD NOV 9 PY 2007 VL 318 IS 5852 BP 938 EP 943 DI 10.1126/science.1151154 PG 6 SC Multidisciplinary Sciences GA 229FM UT ISI:000250788500033 ER PT J AU Valladares, F Gianoli, E Gomez, JM AF Valladares, Fernando Gianoli, Ernesto Gomez, Jose M. TI Ecological limits to plant phenotypic plasticity SO NEW PHYTOLOGIST LA English DT Review DE abiotic stresses; competition; complex environments; fitness; global change; herbivory; phenotypic integration; trait-mediated interactions ID SHADE-AVOIDANCE RESPONSES; MEDIATED INDIRECT INTERACTIONS; CONVOLVULUS-ARVENSIS CONVOLVULACEAE; SIMULATED HERBIVORY; CLIMATE-CHANGE; ENVIRONMENTAL HETEROGENEITY; IMPATIENS-CAPENSIS; ELEVATED CO2; LEAF DAMAGE; PHYSIOLOGICAL PLASTICITY AB Phenotypic plasticity is considered the major means by which plants cope with environmental heterogeneity. Although ubiquitous in nature, actual phenotypic plasticity is far from being maximal. This has been explained by the existence of internal limits to its expression. However, phenotypic plasticity takes place within an ecological context and plants are generally exposed to multifactor environments and to simultaneous interactions with many species. These external, ecological factors may limit phenotypic plasticity or curtail its adaptive value, but seldom have they been considered because limits to plasticity have typically addressed factors internal to the plant. We show that plastic responses to abiotic factors are reduced under situations of conservative resource use in stressful and unpredictable habitats, and that extreme levels in a given abiotic factor can negatively influence plastic responses to another factor. We illustrate how herbivory may limit plant phenotypic plasticity because damaged plants can only rarely attain the optimal phenotype in the challenging environment. Finally, it is examined how phenotypic changes involved in trait- mediated interactions can entail costs for the plant in further interactions with other species in the community. Ecological limits to plasticity must be included in any realistic approach to understand the evolution of plasticity in complex environments and to predict plant responses to global change. C1 CSIC, Ctr Ciencias Medioambientales, Inst Recursos Nat, E-28006 Madrid, Spain. Univ Rey Juan Carlos, Escuela Super Ciencias Expt & Tecnol, Dept Biol & Geol, E-28933 Madrid, Spain. Pontificia Univ Catolica Chile, CASEB, Santiago, Chile. Univ Concepcion, Dept Bot, Concepcion, Chile. Univ Granada, Fac Ciencias, Dept Ecol, Grp Ecol Terrestre, E-18071 Granada, Spain. RP Valladares, F, CSIC, Ctr Ciencias Medioambientales, Inst Recursos Nat, Serrano 115, E-28006 Madrid, Spain. EM valladares@ccma.csic.es NR 183 TC 4 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0028-646X J9 NEW PHYTOL JI New Phytol. PY 2007 VL 176 IS 4 BP 749 EP 763 DI 10.1111/j.1469-8137.2007.02275.x PG 15 SC Plant Sciences GA 229QR UT ISI:000250819700007 ER PT J AU Felix, SA Gonzalez-Lopez, S Mauricio, PD Aguilar-Mendoza, JA Bolanos-Carmona, MV AF Felix, S. A. Gonzalez-Lopez, S. Mauricio, P. D. Aguilar-Mendoza, J. A. Bolanos-Carmona, M. V. TI Effects of filling techniques on the regional bond strength to lateral walls in Class I cavities SO OPERATIVE DENTISTRY LA English DT Article ID COMPOSITE RESIN; DENTIN; POLYMERIZATION; CONFIGURATION; MICROTENSILE; SYSTEMS; VITRO; RESTORATION; ADHESIVES; DEPTH AB Objectives: Using the push-out technique, this study compared the influence of different composite insertion techniques in Class I cavities on the regional shear bond strength to lateral walls. Materials and Method: Standardized Class I cavities were prepared on the occlusal surface of 60 freshly extracted third molars, which were randomly assigned to one of five groups (n=10). The cavities were bonded with the self-etch adhesive AdheSE and restored with Tetric Ceram resin composite by one of five techniques: G1, incremental technique (four oblique layers); G2, flowable composite as liner and bulk technique; G3, bulk technique and G4, light cone technique. The total-etch adhesive (Single Bond) and incremental technique were used as the control procedure. Each specimen was sectioned perpendicular to the long axis of the tooth in 1 mm-thick dentin slices. A push-out test was performed to measure regional bond strengths and identify the type of failure. Two additional teeth per group were prepared for the morphological interface study using scanning electron microscopy. Results: Differences between the groups were tested by one-way ANOVA and Scheffe post hoc test (F=29.635, p<0.001). The highest shear bond strength values were obtained with the incremental technique, regardless of the adhesive used. Significant differences in bond strength to superficial and deep dentin were only found when a total-etch adhesive was used (Single Bond). Conclusions: Use of the incremental technique with total-etch or self-etch adhesives is the most effective method of inserting resin-based composites in large Class I cavities. C1 Inst Super Saude Egas Moniz, Dept Prosthodont & Occlus Orofacial Pain, Monte De Caparica, Portugal. Univ Granada, Sch Dent, Dept Pathol & Dent Therapeut, Granada, Spain. Univ Peruana Cayetano Heredia, Sch Dent, Lima, Peru. RP Gonzalez-Lopez, S, Campus Cartuja, E-18071 Granada, Spain. EM sglopez@ugr.es NR 30 TC 0 PU OPERATIVE DENTISTRY INC PI INDIANAPOLIS PA INDIANA UNIV SCHOOL DENTISTRY, ROOM S411, 1121 WEST MICHIGAN ST, INDIANAPOLIS, IN 46202-5186 USA SN 0361-7734 J9 OPER DENT JI Oper. Dent. PD NOV-DEC PY 2007 VL 32 IS 6 BP 602 EP 609 DI 10.2341/06-170 PG 8 SC Dentistry, Oral Surgery & Medicine GA 229RJ UT ISI:000250821600012 ER PT J AU Acostay, J Nebot, A Villar, P Fuertes, JM AF Acostay, J. Nebot, A. Villar, P. Fuertes, J. M. TI Optimization of fuzzy partitions for inductive reasoning using genetic algorithms SO INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE LA English DT Article DE electrical engineering; central nervous system; genetic algorithms; fuzzy inductive reasoning; genetic fuzzy systems; machine learning ID SYSTEM; NETWORKS; DESIGN AB Fuzzy Inductive Reasoning (FIR) is a data-driven methodology that uses fuzzy and pattern recognition techniques to infer system models and to predict their future behavior. It is well known that variations on fuzzy partitions have a direct effect on the performance of the fuzzy-rule-based systems. The FIR methodology is not an exception. The performance of the model identification and prediction processes of FIR is highly influenced by the discretization parameters of the system variables, i. e. the number of classes of each variable and the membership functions that define its semantics. In this work, we design two new genetic fuzzy systems (GFSs) that improve this modeling and simulation technique. The main goal of the GFSs is to learn the fuzzification parameters of the FIR methodology. The new approaches are applied to two real modeling problems, the human central nervous system and an electrical distribution problem. C1 Univ Politecn Cataluna, Dept Llenguatges & Sist Informat, ES-08034 Barcelona, Spain. Inst Univ Tecnol Alonso Gamero, Dept Instrumentac Ind, Coro Estado Falcon 4101, Venezuela. Univ Granada, Dept Lenguajes & Sist Informat, E-18071 Granada, Spain. Univ Politecn Cataluna, Dept Engn Sist Automat & Informat Ind, E-08028 Barcelona, Spain. RP Nebot, A, Univ Politecn Cataluna, Dept Llenguatges & Sist Informat, ES-08034 Barcelona, Spain. EM angela@lsi.upc.edu NR 54 TC 0 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0020-7721 J9 INT J SYST SCI JI Int. J. Syst. Sci. PY 2007 VL 38 IS 12 BP 991 EP 1011 DI 10.1080/00207720701657581 PG 21 SC Automation & Control Systems; Computer Science, Theory & Methods; Operations Research & Management Science GA 232NZ UT ISI:000251027700004 ER PT J AU Arraez-Roman, D Zurek, G Bassmann, C Almaraz-Abarca, N Quirantes, R Segura-Carretero, A Fernandez-Gutierrez, A AF Arraez-Roman, D. Zurek, G. Baessmann, C. Almaraz-Abarca, N. Quirantes, R. Segura-Carretero, A. Fernandez-Gutierrez, A. TI Identification of phenolic compounds from pollen extracts using capillary electrophoresis-electrospray time-of-flight mass spectrometry SO ANALYTICAL AND BIOANALYTICAL CHEMISTRY LA English DT Article DE pollen; Phenolic compounds; Capillary electrophoresis; Electrospray ionization time-of-flight mass spectrometry ID HONEYBEE-COLLECTED POLLEN; ZONE-ELECTROPHORESIS; ANTIOXIDANT ACTIVITY; OLIVE OIL; PROPOLIS; FLAVONOIDS; SEPARATION; CHROMATOGRAPHY; ACIDS AB In this work, a new, easy and rapid method of analyzing phenolic compounds in pollen extract, based on capillary electrophoresis coupled with electrospray ionization time-of-flight-mass spectrometry (CE-ESI-TOF-MS), has been developed. A systematic investigation of separation parameters has been performed with respect to resolution, sensitivity, analysis time and peak shape. The electrophoretic parameters and electrospray conditions must be optimized to obtain reproducible analyses. Using this method, several important phenolic compounds such as acetin-glucoside, 7-O-methylherbacetin-3-sophoroside, galloylglucose, quercetin-3-sophoroside, apigenin-6,8-di-C-glycoside, quercetin-3-rutinoside, genistein-7-O-beta-D-glucoside, luteolin-7-O-glucoside, apigenin-7-O-glucoside and 2',4',6'-trihydroxy-3'-formyldihydrochalcone have been determined directly from pollen extract. The efficiency, the rapidity, the small amounts of sample required, and the high resolution of CE coupled with the sensitivity, the selectivity, the accurate masses and the true isotopic patterns obtained using TOF-MS point to the potential of this approach for identifying the phenolic compounds present in pollen. C1 Univ Granada, Fac Sci, Dept Analyt Chem, E-18071 Granada, Spain. Bruker Daltonik GmbH, D-28359 Bremen, Germany. Inst Politecn Nacl, COFAA, Ctr Interdisciplinario Invest Desarrollo Integral, Durango, Mexico. RP Segura-Carretero, A, Univ Granada, Fac Sci, Dept Analyt Chem, C-Fuentenueva S-N, E-18071 Granada, Spain. EM ansegura@ugr.es NR 39 TC 0 PU SPRINGER HEIDELBERG PI HEIDELBERG PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY SN 1618-2642 J9 ANAL BIOANAL CHEM JI Anal. Bioanal. Chem. PD NOV PY 2007 VL 389 IS 6 BP 1909 EP 1917 DI 10.1007/s00216-007-1611-6 PG 9 SC Biochemical Research Methods; Chemistry, Analytical GA 234AN UT ISI:000251133100021 ER PT J AU Acosta, J Nebot, A Villar, P Fuertes, JM AF Acosta, Jesus Nebot, Angela Villar, Pedro Fuertes, Josep M. TI Learning fuzzy partitions in FIR methodology SO INTERNATIONAL JOURNAL OF GENERAL SYSTEMS LA English DT Article DE genetic fuzzy systems; fuzzy inductive reasoning; genetic algorithms; electric distribution; networks; ozone prediction ID GENETIC ALGORITHMS; LOGIC CONTROLLERS; SYSTEM; DESIGN; PARAMETERS; RETRIEVAL; NETWORKS AB The main goal of this research is the development of a hybrid genetic fuzzy system (GFS), composed by the fuzzy inductive reasoning (FIR) methodology and a genetic algorithm (GA) that is responsible of learning the fuzzy partitions needed in the recode process of FIR. A partition includes the number of fuzzy sets (classes) per variable and the membership function of each class. The resulting GFS is applied to two real problems, i.e. the estimation of the maintenance cost of medium voltage lines in Spanish towns and the prediction of ozone levels in Austria. The results obtained in each application are compared with some of the most popular classical statistical modeling methods, neural networks and other hybrid evolutionary data analysis techniques. C1 Univ Politecn Cataluna, Dept Llenguatges & Sistemes Informat, Barcelona 08034, Spain. Inst Univ Tecnol Alonso Gamero, Dept Instrumentac Ind, Coro 4101, Venezuela. Univ Granada, Dept Lenguajes & Sist Informat, E-18071 Granada, Spain. Univ Politecn Cataluna, Dept Engn Sistemes Automat & Informat Ind, E-08028 Barcelona, Spain. RP Nebot, A, Univ Politecn Cataluna, Dept Llenguatges & Sistemes Informat, Barcelona 08034, Spain. EM angela@lsi.upc.edu NR 55 TC 0 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0308-1079 J9 INT J GEN SYSTEM JI Int. J. Gen. Syst. PY 2007 VL 36 IS 6 BP 703 EP 731 DI 10.1080/03081070701458548 PG 29 SC Computer Science, Theory & Methods; Ergonomics GA 234ET UT ISI:000251144200005 ER PT J AU Vera, JF Heiser, WJ Murillo, A AF Vera, J. Fernando Heiser, Willem J. Murillo, Alex TI Global optimization in any minkowski metric: A permutation-translation simulated annealing algorithm for multidimensional scaling SO JOURNAL OF CLASSIFICATION LA English DT Article DE multidimensional scaling; simulated annealing; alternating algorithm; generallized stress; permutation; translation; Minkowski metric; attraction rates ID SIMILARITY; ATTENTION; DISTRIBUTIONS; SPACES AB It is well known that considering a non-Euclidean Minkowski metric in Multidimensional Scaling, either for the distance model or for the loss function, increases the computational problem of local minima considerably. In this paper, we propose an algorithm in which both the loss function and the composition rule can be considered in any Minkowski metric, using a multivariate randomly alternating Simulated Annealing procedure with permutation and translation phases. The algorithm has been implemented in Fortran and tested over classical and simulated data matrices with sizes up to 200 objects. A study has been carried out with some of the common loss functions to determine the most suitable values for the main parameters. The experimental results confirm the theoretical expectation that Simulated Annealing is a suitable strategy to deal by itself with the optimization problems in Multidimensional Scaling, in particular for City-Block, Euclidean and Infinity metrics. C1 Univ Granada, Fac Sci, Dept Stat & OR, E-18071 Granada, Spain. Leiden Univ, Fac Social & Behav Sci, Dept Psychol, NL-2300 RA Leiden, Netherlands. Univ Costa Rica, Atlantic Branch, Turrialba, Costa Rica. RP Vera, JF, Univ Granada, Fac Sci, Dept Stat & OR, E-18071 Granada, Spain. EM jfvera@ugr.es heiser@fsw.leidenuniv.nl murillof@cariari.ucr.ac.cr NR 45 TC 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0176-4268 J9 J CLASSIF JI J. Classif. PD SEP PY 2007 VL 24 IS 2 BP 277 EP 301 DI 10.1007/s00357-007-0020-1 PG 25 SC Mathematics, Interdisciplinary Applications; Psychology, Mathematical GA 238CX UT ISI:000251426000008 ER PT J AU Blois, SM Ilarregui, JM Tometten, M Garcia, M Orsal, AS Cordo-Russo, R Toscano, MA Bianco, GA Kobelt, P Handjiski, B Tirado, I Markert, UR Klapp, BF Poirier, F Szekeres-Bartho, J Rabinovich, GA Arck, PC AF Blois, Sandra M. Ilarregui, Juan M. Tometten, Mareike Garcia, Mariana Orsal, Arif S. Cordo-Russo, Rosalia Toscano, Marta A. Bianco, German A. Kobelt, Peter Handjiski, Bori Tirado, Irene Markert, Udo R. Klapp, Burghard F. Poirier, Francoise Szekeres-Bartho, Julia Rabinovich, Gabriel A. Arck, Petra C. TI A pivotal role for galectin-1 in fetomaternal tolerance SO NATURE MEDICINE LA English DT Article ID REGULATORY T-CELLS; MATERNAL-FETAL INTERFACE; EARLY HUMAN-PREGNANCY; DENDRITIC CELLS; RECOMBINANT GALECTIN-1; EXTRACELLULAR-MATRIX; MURINE PREGNANCIES; TROPHOBLAST CELLS; MOUSE PLACENTA; CROSS-TALK AB A successful pregnancy requires synchronized adaptation of maternal immune-endocrine mechanisms to the fetus. Here we show that galectin-1 (Gal-1), an immunoregulatory glycan-binding protein, has a pivotal role in conferring fetomaternal tolerance. Consistently with a marked decrease in Gal-1 expression during failing pregnancies, Gal-1-deficient (Lgals1(-/-)) mice showed higher rates of fetal loss compared to wild-type mice in allogeneic matings, whereas fetal survival was unaffected in syngeneic matings. Treatment with recombinant Gal-1 prevented fetal loss and restored tolerance through multiple mechanisms, including the induction of tolerogenic dendritic cells, which in turn promoted the expansion of interleukin-10 (IL-10)-secreting regulatory T cells in vivo. Accordingly, Gal-1's protective effects were abrogated in mice depleted of regulatory T cells or deficient in IL-10. In addition, we provide evidence for synergy between Gal-1 and progesterone in the maintenance of pregnancy. Thus, Gal-1 is a pivotal regulator of fetomaternal tolerance that has potential therapeutic implications in threatened pregnancies. C1 Univ Med Berlin, Charite, Biomed Res Bldg, D-13353 Berlin, Germany. Consejo Nacl Invest Cient & Tecn, Inst Biol & Med Expt, Immunopathol Lab, RA-1428 Buenos Aires, DF, Argentina. Univ Med Berlin, Charite, Dept Med, Div Hepatol Gastroenterol & Endocrinol, D-13353 Berlin, Germany. Univ Granada, Fac Med, Dept Bioquim & Biol Mol, Unidad Immunol, E-18012 Granada, Spain. Univ Jena, Dept Obstet, Placenta Labor, D-07740 Jena, Germany. Univ Paris 06, Inst Jacques Monod, Ctr Natl Rech, Dept Biol & Dev,UMR 7592, F-75251 Paris, France. Univ Paris 07, F-75221 Paris 05, France. Univ Pecs, Sch Med, Hungarian Acad Sci, Dept Med Microbiol & Immunol,Reprod & Tumor Immun, H-7643 Pecs, Hungary. Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Quim Biol, RA-1428 Buenos Aires, DF, Argentina. RP Arck, PC, Univ Med Berlin, Charite, Biomed Res Bldg, Campus Virchow,Augusttenburger Platz 1, D-13353 Berlin, Germany. EM sandra.blois@charite.de gabyrabi@ciudad.com.ar petra.arck@charite.de NR 49 TC 10 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK STREET, 9TH FLOOR, NEW YORK, NY 10013-1917 USA SN 1078-8956 J9 NATURE MED JI Nat. Med. PD DEC PY 2007 VL 13 IS 12 BP 1450 EP 1457 DI 10.1038/nm1680 PG 8 SC Biochemistry & Molecular Biology; Cell Biology; Medicine, Research & Experimental GA 238KB UT ISI:000251445400019 ER PT J AU Zulantay, I Apt, W Gic, LC Rocha, C Mundaca, K Solari, A Sanchez, G Rodriguez, C Martinez, G De Pablost, LM Sandoval, L Rodriguez, J Vilchez, S Osuna, A AF Zulantay, I. Apt, W. Gic, L. C. Rocha, C. Mundaca, K. Solari, A. Sanchez, G. Rodriguez, C. Martinez, G. De Pablost, L. M. Sandoval, L. Rodriguez, J. Vilchez, S. Osuna, A. TI The PCR-based detection of Trypanosoma cruzi in the faeces of Triatoma infestans fed on patients with chronic American trypanosomiasis gives higher sensitivity and a quicker result than routine xenodiagnosis SO ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY LA English DT Article ID POLYMERASE-CHAIN-REACTION; CHRONIC CHAGAS-DISEASE; CLONAL GENOTYPES; NATURAL CLONES; DNA; ITRACONAZOLE; ALLOPURINOL; ARGENTINA; INFECTION; VECTORS AB In the xenodiagnosis (XD) of American trypanosomiasis (Chagas disease), Trypanosoma cruzi in the triatomine bugs fed on the patient can now be detected using PCR (XD-PCR) as well as by microscopy (XD-M). In a study to compare XD-PCR with XD-M, triatomine bugs were fed on 50 cases of chronic American trypanosomiasis, of whom only 25 were ever found positive by XD-M. Overall, the bugs fed on 34 of the patients (all 25 cases found positive by XD-M and nine of the other patients) were found PCR-positive, giving a 330-bp fragment corresponding to part of the hypervariable region of the kinetoplast DNA of T. cruzi. Of the 25 patients who were ever found positive by XD-M, 20 gave bugs that were smear-positive on day 90 and a similar number (24; P=0. 125) gave bugs that were PCR-positive at this time. On day 30, however, the bugs fed on only 11 of these 25 patients were found positive by microscopy, whereas 23 of these patients were found positive by XD-PCR (P=0.0016). Thus, not only was XD-PCR more sensitive than XD-M but it was also quicker, revealing more cases within 30 days than detected using XD-M over a period of 90 days. C1 Univ Chile, Inst Ciencias Biomed, Fac Med, Program Biol Celular & Mol, Santiago, Chile. Univ Chile, Hosp & Clin, Serv Gastroenterol, Santiago, Chile. Univ Granada, Fac Ciencias, Inst Biotechnol, Granada, Spain. Univ Chile, Escuela Tecnol Med, Fac Med, Santiago, Chile. Univ Chile, Escuela Salud Publ, Fac Med, Santiago, Chile. RP Apt, W, Univ Chile, Inst Ciencias Biomed, Fac Med, Program Biol Celular & Mol, Independencia 1027,Casilla 427, Santiago, Chile. EM wapt@med.uchile.cl NR 30 TC 0 PU MANEY PUBLISHING PI LEEDS PA STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND SN 0003-4983 J9 ANN TROP MED PARASITOL JI Ann. Trop. Med. Parasitol. PD DEC PY 2007 VL 101 IS 8 BP 673 EP 679 DI 10.1179/136485907X241415 PG 7 SC Public, Environmental & Occupational Health; Parasitology; Tropical Medicine GA 238QW UT ISI:000251463600002 ER PT J AU Veerman, JJP Stosic, BD Olvera, A AF Veerman, J. J. P. Stosic, B. D. Olvera, A. TI Spatial instabilities and size limitations of flocks SO NETWORKS AND HETEROGENEOUS MEDIA LA English DT Article DE dynamics of flocks; spatial instabilities AB The movement of flocks with a single leader (and a directed path from it to every agent) can be stabilized over time as has been shown before (for details see [ ] and prior references therein, shorter descriptions are given in [ , ]). But for large flocks perturbations in the movement of the leader may nonetheless grow to a considerable size as they propagate throughout the flock and before they die out over time. We calculate the effect of this "finite size resonance" in two simple cases, and indicate two applications of these ideas. The first is that if perturbations grow as the size of the flock gets larger, then the size of the flock will have a natural limitation. Our examples suggest that for flocks with a symmetric communication graph perturbations tend to grow much slower than in the asymmetric case. The second application concerns a simple traffic-like problem. Suppose the leader accelerates from standstill to a given velocity and a large flock is supposed to follow it. The acceleration of the leader is the 'perturbation'. C1 Portland State Univ, Dept Math & Stat, Portland, OR 97207 USA. Univ Granada, Dept Matemat Aplicada, E-18071 Granada, Spain. Univ Fed Rural Pernambuco, Dept Estat & Informat, BR-52171900 Recife, PE, Brazil. Univ Nacl Autonoma Mexico, Dept Mat & Mecan, IIMAS, Mexico City 04510, DF, Mexico. RP Veerman, JJP, Portland State Univ, Dept Math & Stat, Portland, OR 97207 USA. EM veerman@pdx.edu borko@ufpe.br aoc@mym.iimas.unam.mx NR 5 TC 0 PU AMER INST MATHEMATICAL SCIENCES PI SPRINGFIELD PA PO BOX 2604, SPRINGFIELD, MO 65801-2604 USA SN 1556-1801 J9 NETW HETEROG MEDIA JI Netw. Heterog. Media PD DEC PY 2007 VL 2 IS 4 BP 647 EP 660 PG 14 SC Mathematics, Interdisciplinary Applications GA 239RU UT ISI:000251536200005 ER PT J AU Chaves, RMB Ferrer, L AF Chaves, Rosa Maria Barreiro Ferrer, Leonor TI Nonexistence results and convex hull property for maximal surfaces in Minkowski three-space SO PACIFIC JOURNAL OF MATHEMATICS LA English DT Article DE maximal surfaces ID MINIMAL-SURFACES; MEAN-CURVATURE; SPACE; HYPERSURFACES; SINGULARITIES AB We study properly immersed maximal surfaces with nonempty boundary and singularities in three-dimensional Minkowski space. We use the maximum principle and scaling arguments to obtain nonexistence results for these surfaces when the boundary is planar. We also give sufficient conditions for such surfaces to satisfy the convex hull property. C1 Univ Sao Paulo, Inst Mathemat & Estatist, Dept Matemat, BR-05508090 Sao Paulo, Brazil. Univ Granada, Dept Geometria & Topol, E-18071 Granada, Spain. RP Chaves, RMB, Univ Sao Paulo, Inst Mathemat & Estatist, Dept Matemat, Rua Do Matao 1010, BR-05508090 Sao Paulo, Brazil. EM rosab@ime.usp.br lferrer@ugr.es NR 22 TC 0 PU PACIFIC JOURNAL MATHEMATICS PI BERKELEY PA PO BOX 4163, BERKELEY, CA 94704-0163 USA SN 0030-8730 J9 PAC J MATH JI Pac. J. Math. PD MAY PY 2007 VL 231 IS 1 BP 1 EP 26 PG 26 SC Mathematics GA 240CE UT ISI:000251563800001 ER PT J AU Monticelli, F Osorio, R Tay, FR Sadek, FT Ferrari, M Toledano, M AF Monticelli, Francesca Osorio, Raquel Tay, Franklin R. Sadek, Fernanda T. Ferrari, Marco Toledano, Manuel TI Resistance to thermo-mechanical stress of different coupling agents used as intermediate layer in resin-fiber post bonds SO AMERICAN JOURNAL OF DENTISTRY LA English DT Article ID COMPOSITE RESINS; IN-VITRO; STRENGTH; FATIGUE; CEMENT; SILANE; DENTIN; ADHESION; RESTORATIONS; RETENTION AB Purpose: To evaluate the microtensile bond strength (MTBS) of different coupling agents used in fiber post-composite bonds to withstand different in vitro challenging procedures. Methods: 63 fiber posts (DT Light Post) etched with 10% hydrogen peroxide were divided into three groups according to the silane/adhesive system applied: (1) Porcelain Bond Activator (PBA) + Clearfil SE Bond; (2) PBA + Clearfil Tri S Bond; (3) Monobond-S. A composite build-up (Clearfil AP-X) was performed around the post producing cylindrical specimens that were divided into three subgroups according to the different aging protocol: (1) 24-hour storage at room temperature; (2) Thermocycling (5000 cycles, 5 degrees/55 degrees C dwell time: 30 seconds); (3) Cyclic loading (45 angle, 20,000 cycles, load 5-50 N at 3.0 Hz). Samples were then cut obtaining sticks that were loaded in tension until failure. Bond strength values were statistically analyzed with two-way ANOVA and Tukey test (alpha = 0.05). Failure mode was recorded and the morphologic aspect of post/core interface after aging was evaluated under SEM. Results: Both post superficial treatment, thermocycling and cyclic loading influenced bond strength. After 24 hours, samples treated with silane/adhesive couplings attained higher MTBS than those bonded with conventional silane. No significant differences in the microtensile bond strength at the post/core interface were recorded between the different silane/adhesive couplings. After challenging, no differences were found between the tested groups. C1 Univ Siena, Policlin Le Scotte, Dept Restorat Dent & Dent Mat, I-53100 Siena, Italy. Univ Granada, Sch Dent, Dept Dent Mat, Granada, Spain. Med Coll Georgia, Sch Dent, Dept Oral Biol & Maxillofacial Pathol, Augusta, GA USA. Univ Sao Paulo, Dept Dent Mat, Sao Paulo, Brazil. RP Monticelli, F, Univ Siena, Policlin Le Scotte, Dept Restorat Dent & Dent Mat, Viale Bracci, I-53100 Siena, Italy. EM francescamonti@hotmail.it NR 27 TC 0 PU MOSHER & LINDER, INC PI WESTON PA 318 INDIAN TRACE SUITE 500, WESTON, FL 33326 USA SN 0894-8275 J9 AM J DENTISTRY JI Am. J. Dent. PD DEC PY 2007 VL 20 IS 6 BP 416 EP 420 PG 5 SC Dentistry, Oral Surgery & Medicine GA 243VQ UT ISI:000251825800014 ER PT J AU Saude-Guimaraes, DA Perry, KSP Raslan, DS Chiari, E Barrero, AF Oltra, JE AF Saude-Guimaraes, Denia A. Perry, Katia S. P. Raslan, Dio S. Chiari, Egler Barrero, Alejandro F. Oltra, Juan E. TI Complete assignments of H-1 and C-13 NMR data for trypanocidal eremantholide C oxide derivatives SO MAGNETIC RESONANCE IN CHEMISTRY LA English DT Article DE NMR; H-1 NMR; C-13 NMR; 2D NMR; eremantholide C; Lychnophora trichocarpha; sesquiterpene lactone; eremantholide C derivatives; trypanocidal activity ID SELENIUM DIOXIDE; OXIDATION; LACTONES AB The chemical transformations of eremantholide C (1), a trypanocidal sesquiterpene lactone isolated from Lychnophora trichocarpha Spreng., gave five new oxide derivatives: 3-hydroxyeremantholide C (2), l'-formyleremantholide C (3), 1'-carboxyeremantholide C (4), 1'-carbomethoxyeremantholide C (5) and sodium V-carboxylate of eremantholide C (6). The H-1 and C-13 NMR data of all these derivatives were assigned based on 1D and 2D techniques. The derivatives were evaluated against Y and CL strains of Trypanosoma cruzi. All of them were inactive against the Y strain. Compounds 2 and 5 displayed 100% activity on the CL strain while compounds 4 and 6 were partially active on the CL strain. Copyright (c) 2007 John Wiley & Sons, Ltd. C1 Univ Fed Ouro Preto, Escola Farm, DEFAR, LAPLAMED, BR-35400000 Ouro Preto, MG, Brazil. Ctr Desenvolvimento Tecnol Nucl, Comissao Nacl Energy Nucl, BR-30123970 Belo Horizonte, MG, Brazil. Univ Fed Minas Gerais, Dept Quim, Pampulha, MG, Brazil. Univ Fed Minas Gerais, Dept Parasitol, Pampulha, MG, Brazil. Univ Granada, Fac Ciencias, Inst Biotechnol, Dept Quim Organ, E-18071 Granada, Spain. RP Saude-Guimaraes, DA, Univ Fed Ouro Preto, Escola Farm, DEFAR, LAPLAMED, Rua Costa Sena 171, BR-35400000 Ouro Preto, MG, Brazil. EM saude@ef.ufop.br NR 8 TC 0 PU JOHN WILEY & SONS LTD PI CHICHESTER PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND SN 0749-1581 J9 MAGN RESON CHEM JI Magn. Reson. Chem. PD DEC PY 2007 VL 45 IS 12 BP 1084 EP 1087 DI 10.1002/mrc.2093 PG 4 SC Chemistry, Multidisciplinary; Chemistry, Physical; Spectroscopy GA 244IY UT ISI:000251860800012 ER PT J AU Vera, M Sierra, M Diez, M Sierra, C Martinez, A Martinez, FJ Aguilar, J AF Vera, M. Sierra, M. Diez, M. Sierra, C. Martinez, A. Martinez, F. J. Aguilar, J. TI Deforestation and land use effects on micromorphological and fertility changes in acidic rainforest soils in Venezuelan Andes SO SOIL & TILLAGE RESEARCH LA English DT Article DE land use effects; deforestation; micromorphological changes; fertility changes ID ORGANIC FARMING SYSTEMS; QUALITY AB With the aim of determining the impact on soil caused by deforestation and replacement by pasture in the rainforests of the Venezuelan Andes, three representative plots were selected: one under natural forest (F), another deforested (D), and the third one under pasture (P). The chemical analyses of the soils were complemented with a micromorphological study. The analysis of thin sections revealed major differences in the microstructure and porosity, as well as in the characteristics of the fine fraction and organic constituents, together with other pedological features, corroborating the different dynamics and types of soil in the natural or altered forest landscape. The change in soil use leads to the reorganization of the solid fraction, evidenced in the intensity of the processes of transference and accumulation of materials in the different soil horizons. The results confirm that the change in land use is determinant in the current fertility and evolution of the soils. The main consequences of the land-use change are: a change in the soil organic-matter cycle with a greater degree of maturation in the disturbed soils (C/N in Ah horizon: 28.5 (F); 19.8 (D); 18.4 (P)), in which moder humus from undisturbed forest soils transforms into an acidic mull in the anthropogenic disturbed ones; illuviation of organic matter and minerals appears to have occurred after deforestation (colour (dry-wet) in Ah-Bt1-Bt2 horizons: 3/2-2/2, 4/ 4-3/4, 4.5/4-3.5/4 (F); 5/4-4.5/4, 5/6-4/6, 5/6-4.5/6 (D); 4.5/4-4/3.5, 5/6-4/4, 5/6-4/4 (P)); the amount of kaolinite and the degree of browning increased gradually with deforestation; other changes observed (bioturbation, microstructure, porosity and distribution of organic constituents) may also be related to the different activity of the soil fauna in disturbed (oribatids) and undisturbed soils (worms). Thus the porosity changes in the following form: the percentage of packing voids in the surface samples decreases from a 80% in the forest soil to a 70% and 65% in deforested and pasture soils, respectively. Moreover in depth a dominance of channels in forest-soil porosity changes into an abundance of planar voids in the other two types of soils studied. (C) 2007 Elsevier B.V. All rights reserved. C1 Univ Granada, Dept Pedol & Agr Chem, E-18071 Granada, Spain. Univ Los Andes, Fac Forestry & Environm Sci, Inst Geog, Merida, Venezuela. Ctr Informac & Fomento Agrario, Granada, Spain. RP Sierra, M, Univ Granada, Dept Pedol & Agr Chem, Campus Fuentenueva, E-18071 Granada, Spain. EM msierra@ugr.es NR 52 TC 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-1987 J9 SOIL TILL RES JI Soil Tillage Res. PD DEC PY 2007 VL 97 IS 2 BP 184 EP 194 DI 10.1016/j.still.2007.09.015 PG 11 SC Soil Science GA 245YY UT ISI:000251975900006 ER PT J AU Chavez, RE Flores-Marquez, EL Surinach, E Galindo-Zaldivar, JG Rodriguez-Fernandez, JR Maldonado, A AF Chavez, R. E. Flores-Marquez, E. L. Surinach, E. Galindo-Zaldivar, J. G. Rodriguez-Fernandez, J. R. Maldonado, A. TI Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica SO GEOLOGICA ACTA LA English DT Article DE gravity; inverse theory; antarctic peninsula; Powell Basin; marine geophysics ID SHACKLETON FRACTURE-ZONE; NORTHERN WEDDELL SEA; DRAKE PASSAGE; SATELLITE ALTIMETRY; MAGNETIC-ANOMALIES; TECTONIC EVOLUTION; GRAVITY INVERSION; OCEAN-BASIN; PENINSULA; RIDGE AB The Powell Basin is a small oceanic basin located at the NE end of the Antarctic Peninsula developed during the Early Miocene and mostly surrounded by the continental crusts of the South Orkney Microcontinent, South Scotia Ridge and Antarctic Peninsula margins. Gravity data from the SCAN 97 cruise obtained with the R/V Hesperides and data from the Global Gravity Grid and Sea Floor Topography (GGSFT) database (Sandwell and Smith, 1997) are used to determine the 31) geometry of the crustal-mantle interface (CMI) by numerical inversion methods. Water layer contribution and sedimentary effects were eliminated from the Free Air anomaly to obtain the total anomaly. Sedimentary effects were obtained from the analysis of existing and new SCAN 97 multichannel seismic profiles (MCS). The regional anomaly was obtained after spectral and filtering processes. The smooth 3D geometry of the crustal mantle interface obtained after inversion of the regional anomaly shows an increase in the thickness of the crust towards the continental margins and a NW-SE oriented axis of symmetry coinciding with the position of an older oceanic spreading axis. This interface shows a moderate uplift towards the western part and depicts two main uplifts to the northern and eastern sectors. C1 UNAM, Inst Geofis, Mexico City 04510, DF, Mexico. Univ Barcelona, Dept Geodinam & Geofis, E-08028 Barcelona, Spain. Univ Granada, Dept Geodinam, E-18071 Granada, Spain. Univ Granada, Fac Ciencias, CSIC, Inst Andaluz Ciencias Tierra, Granada 18002, Spain. RP Chavez, RE, UNAM, Inst Geofis, Cd Univ, Mexico City 04510, DF, Mexico. EM exprene@geofisica.unam.mx leticia@geofisica.unam.mx emma.surinach@ub.edu jgalindo@ugr.es jrodrig@ugr.es amaldona@ugr.es NR 47 TC 2 PU INST CIENCIES TERRA JAUME ALMERA-CSIC PI BARCELONA PA LLUIS SOLE I SABARIS S-N, BARCELONA, E-08028, SPAIN SN 1695-6133 J9 GEOL ACTA JI Geol. Acta PY 2007 VL 5 IS 4 BP 323 EP 335 PG 13 SC Geology GA 254NP UT ISI:000252593600006 ER PT J AU Fernandez-Molina, JC Guimaraes, JAC AF Fernandez-Molina, J. Carlos Chaves Guimaraes, Jose Augusto TI New laws for author's rights: adequate for digital preservation? SO INFORMATION RESEARCH-AN INTERNATIONAL ELECTRONIC JOURNAL LA Spanish DT Article ID CIRCUMVENTION AB Introduction. Besides technical and economic-organisational problems, digital preservation also faces legal issues, especially regarding copyright legislation, since all digital preservation strategies involve copying materials and/or using software which is typically copyrighted. The purpose of this paper is to ascertain the extent to which current copyright laws meet the preservation requirements of library materials.. Methodology. A cross-sectional analysis of recently updated national copyright laws as well as the impact of the other two protection methods: contractual and technological. Results. Even after the latest updates current copyright legislation is almost useless for digital preservation activities since the opportunities provided by WIPO Copyright Treaty to adapt and extend copyright exceptions and limitations have been used to the full. Conclusion. We need a legislation reform that will make it possible to carry out all required copying and communication activities and software use, even if circumventing technological protection is needed. But that is not enough for licensed works. The best solution for this kind of work is to include specific clauses in the licences that facilitate preservation activities. Thus, cooperation between both parties, libraries and rights' holders, is essential. C1 Univ Granada, Fac Bibliotecon & Documentac, Colegio Maximo Cartuja, E-18071 Granada, Spain. Univ Estadual Paulista, Dept Ciencia Informacao, BR-17525900 Marilia, Brazil. RP Fernandez-Molina, JC, Univ Granada, Fac Bibliotecon & Documentac, Colegio Maximo Cartuja, E-18071 Granada, Spain. NR 44 TC 0 PU UNIV SHEFFIELD DEPT INFORMATION STUDIES PI SHEFFIELD PA UNIV SHEFFIELD, WESTERN BANK, SHEFFIELD S10 2TN, S YORKS, ENGLAND SN 1368-1613 J9 INF RES JI Inf. Res. PD OCT PY 2007 VL 12 IS 4 AR 322 PG 16 SC Information Science & Library Science GA 264MT UT ISI:000253292400004 ER PT J AU Salazar, IC Caballo, VE Gonzalez, DC AF Salazar, Isabel C. Caballo, Vicente E. Gonzalez, Diana C. TI Psychological cognitive behavioral crisis intervention related to disasters: a theorical framework SO PSICOLOGIA CONDUCTUAL LA Spanish DT Article DE crises; disasters; cognitive-behavior crisis intervention; problem solving ID MODEL; STRESS AB Crisis intervention is a mode of psychological work widely used in the world. Nevertheless, the majority of the crisis interventions are focused on subsequent psychiatric and psychological problems. The crises related to natural or human disasters are also subject to psychological intervention, because they generate. an imbalance in the functioning of individual (biopsychosocial) and community systems, as well as a negative impact at economic and development level in the region or country. However, according to the literature reviewed, there are no reports about cognitive-behavioral psychological crises intervention for disasters. Thus, there is a challenge for cognitive-behavioral clinical psychologists and researchers who want to contribute to this field, from an evidence-based approach with an impact on mental health and public health programs with positive cost-efficient therapies. C1 Univ Granada, Fac Psicol, E-18071 Granada, Spain. Pontificia Univ Javeriana, Cali, Colombia. RP Caballo, VE, Univ Granada, Fac Psicol, E-18071 Granada, Spain. EM vcaballo@ugr.es NR 50 TC 0 PU ASOCIACION ESPANOLA PSICOLOGIA CONDUCTUAL PI GRANADA PA UNIVERSIDAD DE GRANADA, 18071 GRANADA, SPAIN SN 1132-9483 J9 PSICOL CONDUCT JI Psicologia. Conductual. PD DEC PY 2007 VL 15 IS 3 BP 389 EP 405 PG 17 SC Psychology, Clinical GA 272HU UT ISI:000253851300005 ER PT J AU Lopez, YH de Rincon, OT Acosta, AT Moreno, AD Montero, JR Berrios, F Montero, P AF Lopez, Yolanda Hernandez Traconis de Rincon, Oladis Acosta, Andres Torres Moreno, Angelica del Valle Rodriguez Montero, Jose Berrios, Freddy Montero, Pablo TI Ambient effect comparative performance between Zn and Al/Zn/In point anodes in reinforced concrete SO REVISTA TECNICA DE LA FACULTAD DE INGENIERIA UNIVERSIDAD DEL ZULIA LA Spanish DT Article DE corrosion in reinforced concrete; cathodic protection; point anodes; zinc anodes; aluminum/zinc/indium anodes AB This investigation presents the performance of zinc-based point anodes based on laboratory results after a three years evaluation period. Twelve small reinforced concrete beams, six 60 x 10 x 15 cm and six 120 x 20 x 30 cm, were fabricated for this evaluation. Concrete mixtures were prepared with and without chloride contamination. Chloride contamination was achieved adding between 1% and 3.5 wt% chlorides by cement weight during mixing. Beams were exposed to two different relative humidities, either constant approximate to 95% RH or outdoor approximate to 77 % RH. The commercially available zinc-based point anodes were placed at one end of the beams to determine how polarized the rebars get when interconnection between the anode and the steel was achieved. Half cell potentials, current distribution, and polarization decay due to the anode interconnection with the rebar were measured. On the other hand, aluminium/zinc/indium anodes were evaluated at approximate to 77 % RH by using similar beams. This investigation presents the anode polarization efficiency, which depends of the environment humidity and, in turns, to the concrete resistivity. It was determined that these anodes might protect steel in highly humid concrete, like parts of the structures exposed to splash and/or tidal zone. C1 Univ Zulia, Ctr Estudios Corros, Maracaibo 4011, Venezuela. Inst Mexicano Transporte, Sanfandila 76700, Queretaro, Mexico. Univ Granada, Dept Ingn Civil, ETS Ingenieros Caminos, E-18071 Granada, Spain. RP Lopez, YH, Univ Zulia, Ctr Estudios Corros, Ciudad Univ,POB 10482, Maracaibo 4011, Venezuela. EM esishdez@cantv.net oladis1@yahoo.com atorres@imt.mx avalle@imt.mx rmontero@ugr.es rmontero@ugr.es NR 11 TC 0 PU UNIV ZULIA PI MARACAIBO PA APARTADO POSTAL 10 482, MARACAIBO, ZULIA 4002A, VENEZUELA SN 0254-0770 J9 REV TEC FAC ING UNIV ZULIA JI Rev. Tec. Fac. Ing. Univ. Zulia PD NOV PY 2007 VL 30 SI Sp. Iss. SI BP 198 EP 209 PG 12 SC Engineering, Multidisciplinary GA 300YX UT ISI:000255862900023 ER PT J AU Vera-Villarroel, P Sanchez, AI Buela-Casal, G AF Vera-Villarroel, Pablo Sanchez, Ana I. Buela-Casal, Gualberto TI Sleep and immune system: differences in immunological variables in subjects with apnea and controls SO REVISTA ECUATORIANA DE NEUROLOGIA LA Spanish DT Article DE sleep; immune system; apnea; leukocytes; lymphocytes; psychoneuroimmunology; health psychology ID PSYCHONEUROIMMUNOLOGY; DEPRESSION; PSYCHOLOGY; RESPONSES; PATTERNS AB Recently, interest for studying the relationship between sleep and immunological system has increased. The Obstructive Sleep Apnea Syndrome (OSAS) is a disorder characterized by repetitive episodes of respiratory cessation that occur during sleep. Recent studies have suggested the need to study the relation between OSAS and immune system. The objective of this study was to analyze the differences between subjects with OSAS and healthy ones in their immunological system. The sample was composed of thirteen patients with OSAS selected from a medical centre and sixteen healthy subjects. An index apnea/hypopnea (IAH) >= to 10 confirmed the OSAS diagnosis. In order to establish a diagnosis of OSAS a cardio-respiratory polygraph was applied during all the sleep hours to each patient. The results revealed significant differences in leukocytes (P< 0.01), and lymphocytes (P < 0.01) between subjects with OSAS and those healthy. No significant differences were found between groups in monolithic. C1 Univ Santiago Chile USACH, Escuela Psicol, Santiago 3650, Chile. Univ Granada, Fac Psicol, E-18071 Granada, Spain. RP Vera-Villarroel, P, Univ Santiago Chile USACH, Escuela Psicol, Avenida Ecuador, Santiago 3650, Chile. EM pvera@usach.cl NR 32 TC 0 PU SOC ECUATORIANA NEUROLOG PI GUAYAQUIL PA REVISTA ECUATORIANA NEUROLOGIA PO BOX (09-01) 3734, GUAYAQUIL, 00000, ECUADOR SN 1019-8113 J9 REV ECUAT NEUROL JI Rev. Ecuat. Neurol. PY 2007 VL 16 IS 3 BP 181 EP 184 PG 4 SC Neurosciences GA 306LA UT ISI:000256248400004 ER PT J AU Sanchez, E Avila-Quezada, G Gardea, AA Ruiz, JM Romero, L AF Sanchez, E. Avila-Quezada, G. Gardea, A. A. Ruiz, J. M. Romero, L. TI Biosynthesis of proline in fruits of green bean plants: deficiency versus toxicity of nitrogen SO PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY LA English DT Article DE Phaseolus vulgaris L.; proline metabolism; green bean; nitrogen; deficiency; toxicity ID STRESS; SYNTHETASE; SYSTEM AB The objective of this work was to determine the effect of deficiency versus toxicity of N on biosynthesis of proline in fruits of green bean plants (Phaseolus vulgaris L. cv. Strike). Nitrogen was applied to the nutritive solution in the form of NH4NO3 at 1.5 mM (N1), 3.0 mM (N2), 6.0 mM (N3, optimal level), 12.0 mM (N4), 18.0 mM (N5), and 24.0 mM (N6). Nitrogen deficiency (N1 and N2) was characterized by having lower proline accumulation in pods and seeds, mainly because proline degradation was stimulated by the enzyme proline dehydrogenase. On the other hand, N toxicity (N4, N5, and N6) was characterized for accumulation of greater amounts of proline in pods and seeds due primarily to the greater activity of the enzyme ornitine-delta-aminotransferase. These results suggest a predominance of the ornithine over the glutamine pathway. Under our experimental conditions, proline can be defined as a good bioindicator of N excess in green bean plants. The accumulation of proline in both organs (pods and seeds) is also considered a good bioindicator of N toxicity in the study plant species. C1 Ctr Invest Alimentac & Desarrollo, Chihuahua 33089, Mexico. Univ Granada, Fac Ciencias, Dept Fisiol Vegetal, E-18071 Granada, Spain. RP Sanchez, E, Ctr Invest Alimentac & Desarrollo, AC Av 4Ta Sur 3820 Fracc Vencedores Desierto Cd D, Chihuahua 33089, Mexico. EM esteban@ciad.mx NR 17 TC 0 PU FUNDACION ROMULO RAGGIO PI VICENTE LOPEZ (BA) PA GASPAR CAMPOS 861, 1638 VICENTE LOPEZ (BA), ARGENTINA SN 0031-9457 J9 PHYTON-INT J EXP BOT ARG JI Phyton-Int. J. Exp. Bot. PY 2007 VL 76 BP 143 EP 152 PG 10 SC Plant Sciences GA 314FN UT ISI:000256795000013 ER PT J AU Bensusan, H Pinedo-Garcia, M AF Bensusan, Hilan Pinedo-Garcia, Manuel TI Minimal empiricism without dogmas (John McDowell) SO PHILOSOPHIA LA English DT Article DE empiricism; scepticism; holism; objectivity; thought AB John McDowell has defended a position called minimal empiricism, that aims to avoid the oscillation between traditional empiricism's commitment to a set of contents working as external justifiers for our system of beliefs and a coherentist position where our thought receives no constraint from the world. We share McDowell's dissatisfaction with both options, but find his minimal empiricism committed to the idea of a tribunal of experience where isolated contents are infused into our network of inferences. This commitment is prone to sceptical attacks and waters down McDowell's holism. We propose to retain McDowell's partial re-enchantment of nature - without appealing to McDowell's Kantian conception of experience -, and argue that it is sufficient to avoid the oscillation and to make sense of the objectivity of thought. C1 Univ Granada, Dept Filosofia, Edificio Fac Psicol, Granada 18011, Spain. Univ Brasilia, Dept Filosofia, Brasilia, DF, Brazil. RP Pinedo-Garcia, M, Univ Granada, Dept Filosofia, Edificio Fac Psicol, Campus Cartuja, Granada 18011, Spain. EM hilanb@unb.br pinedo@ugr.es NR 17 TC 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0048-3893 J9 PHILOSOPHIA JI Philosophia PD JUN PY 2007 VL 35 IS 2 BP 197 EP 206 DI 10.1007/s11406-007-9061-0 PG 10 SC Philosophy GA 325BY UT ISI:000257564400009 ER PT J AU HORTELANO, P LUPIANEZ, JA BARNSWELL, J SANCHEZPOZO, A MCFARLANEANDERSON, N ALLEYNE, GAO TI RENAL AMMONIAGENESIS IN RATS MADE ACUTELY ACIDOTIC BY SWIMMING SO HORMONE AND METABOLIC RESEARCH LA English DT Article C1 UNIV W INDIES,DEPT MED,KINGSTON,JAMAICA. RP HORTELANO, P, UNIV GRANADA,FAC CIENCIAS,DEPT BIOCHEM,GRANADA,SPAIN. NR 35 TC 6 PU GEORG THIEME VERLAG PI STUTTGART PA P O BOX 30 11 20, D-70451 STUTTGART, GERMANY SN 0018-5043 J9 HORMONE METAB RES JI Horm. Metab. Res. PY 1984 VL 16 IS 7 BP 370 EP 373 PG 4 SC Endocrinology & Metabolism GA TC660 UT ISI:A1984TC66000010 ER PT J AU SILVA, J LLOPIS, J ZAMORA, SI TI EFFECT OF PENICILLIN ON THE INVITRO RUMINAL FERMENTATION SO ARCHIVOS DE BIOLOGIA Y MEDICINA EXPERIMENTALES LA Spanish DT Meeting Abstract C1 CONSEJO NACL INVEST CIENT & TECN,MENDOZA,ARGENTINA. UNIV GRANADA,FAC FARM,DEPT FISIOL ANIM,GRANADA,SPAIN. NR 0 TC 0 PU SOC BIOL CHILE PI SANTIAGO PA CASILLA 14164 CORREO, SANTIAGO 9, CHILE SN 0004-0533 J9 ARCH BIOL MED EXP PY 1984 VL 17 IS 2 BP R183 EP R183 PG 1 SC Biology; Medicine, General & Internal; Medicine, Research & Experimental GA TS304 UT ISI:A1984TS30400370 ER PT J AU MEDIAVILLA, E PASTORIZA, MG BATTANER, E TI CCD PHOTOMETRY OF SEYFERT-GALAXIES SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article C1 ROYAL GREENWICH OBSERV,HAILSHAM BN27 1RP,E SUSSEX,ENGLAND. UNIV FED RIO GRANDE SUL,BR-90000 PORTO ALEGRE,RS,BRAZIL. UNIV GRANADA,DEPT FIS MODERNA,GRANADA,SPAIN. RP MEDIAVILLA, E, INST ASTROFIS CANARIAS,LA LAGUNA,SPAIN. NR 16 TC 7 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD JUL PY 1989 VL 157 IS 1-2 BP 145 EP 151 PG 7 SC Astronomy & Astrophysics GA AM238 UT ISI:A1989AM23800020 ER PT J AU PASTORIZA, MG MEDIAVILLA, E BATTANER, E TI MORPHOLOGY AND LUMINOSITY DISTRIBUTION OF SEYFERT-GALAXIES SO IAU SYMPOSIA LA English DT Article C1 UNIV FED RIO GRANDE SUL,INST FIS,BR-90000 PORTO ALEGRE,RS,BRAZIL. INST ASTROFIS CANARIAS,TENERIFE,SPAIN. UNIV GRANADA,GRANADA,SPAIN. RP PASTORIZA, MG, ROYAL GREENWICH OBSERV,HERSTMONCEUX,ENGLAND. NR 4 TC 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 J9 IAU SYMP PY 1989 IS 134 BP 486 EP 487 PG 2 SC Astronomy & Astrophysics GA DB065 UT ISI:A1989DB06500153 ER PT J AU AGUILERANAVARRO, VC ESTEVEZ, GA GUARDIOLA, R TI VARIATIONAL AND PERTURBATIVE SCHEMES FOR A SPIKED HARMONIC-OSCILLATOR SO JOURNAL OF MATHEMATICAL PHYSICS LA English DT Article C1 INTER AMER UNIV,DEPT MATH & PHYS SCI,SAN GERMAN,PR 00753. UNIV GRANADA,DEPT FIS MODERNA,E-18071 GRANADA,SPAIN. RP AGUILERANAVARRO, VC, UNIV NACL ESTADUAL SAO PAULO,INST FIS TEOR,BR-01405 SAO PAULO,SP,BRAZIL. NR 12 TC 48 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0022-2488 J9 J MATH PHYS-NY JI J. Math. Phys. PD JAN PY 1990 VL 31 IS 1 BP 99 EP 104 PG 6 SC Physics, Mathematical GA CF295 UT ISI:A1990CF29500012 ER PT J AU HORTELANO, P GARCIASALGUERO, L LUPIANEZ, JA ALLEYNE, GAO TI INFLUENCE OF ACUTE METABOLIC-ACIDOSIS ON THE MONOMER AND POLYMER FORMS OF RENAL PHOSPHATE-DEPENDENT GLUTAMINASE SO LIFE SCIENCES LA English DT Article C1 UNIV W INDIES,DEPT MED,KINGSTON 7,JAMAICA. RP LUPIANEZ, JA, UNIV GRANADA,DEPT BIOQUIM & BIOL MOLEC,AVE FUENTENUEVA S-N,E-18001 GRANADA,SPAIN. NR 36 TC 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0024-3205 J9 LIFE SCI JI Life Sci. PY 1990 VL 46 IS 26 BP 1903 EP 1912 PG 10 SC Medicine, Research & Experimental; Pharmacology & Pharmacy GA DH059 UT ISI:A1990DH05900002 ER PT J AU PRADO, B DELMORAL, A TAPIA, P JOYAS, A TI NUMERICAL TAXONOMY OF STAPHYLOCOCCI ISOLATED FROM CLINICAL-SAMPLES SO REVISTA MEDICA DE CHILE LA Spanish DT Article C1 HOSP GUSTAVO FRICKE, SECC MICROBIOL, CLIN LAB, VINA DEL MAR, CHILE. UNIV GRANADA, FAC FARM, DEPT MICROBIOL, GRANADA, SPAIN. NR 15 TC 0 PU SOC MEDICA SANTIAGO PI SANTIAGO 9 PA BERNARDA MORIN 488 PROVIDENCIA, CASILLA 168 CORREO 55, SANTIAGO 9, CHILE SN 0034-9887 J9 REV MED CHILE JI Rev. Medica Chile PD AUG PY 1990 VL 118 IS 8 BP 841 EP 845 PG 5 SC Medicine, General & Internal GA EG473 UT ISI:A1990EG47300001 ER PT J AU HORTELANO, P GARCIASALGUERO, L ALLEYNE, GAO LUPIANEZ, JA TI COMPARATIVE EFFECTS OF PLASMA FROM ACUTELY ACIDOTIC RATS ON THE ACTIVITY OF PHOSPHATE-DEPENDENT GLUTAMINASES FROM SEVERAL ANIMAL-TISSUES SO CHEMOSPHERE LA English DT Article ID AMMONIA PRODUCTION; ACTIVATED GLUTAMINASE; RENAL AMMONIAGENESIS; METABOLIC-ACIDOSIS; NEPHRON; KIDNEY; ADAPTATION; MECHANISM; GLUTAMATE; INCREASE AB The effects of acute metabolic acidosis, induced by the administration of NH4Cl, and also plasma from acutely acidotic rats on the kinetics of phosphate-dependent glutaminase (PDG) from several animal tissues have been studied. During acute metabolic acidosis only the enzyme activity from kidney cortex was altered. On the other hand, PDG activity from the kidney cortex, small intestine and brain significantly increased in the direct presence of plasma from acutely acidotic rats at subsaturating concentration of glutamine. No such effect was observed with liver tissue. This kinetic behaviour leads to a significant depression in the Km values for the three affected enzymes but no variation in the Vmax. These results go to support the idea that PDG from the kidney cortex, brain and small intestine are kinetically and immunologically identical and also confirm that during acute metabolic acidosis a factor is released into the plasma, probably produced and concentrated by the kidneys, which induces a conformational change in the enzyme from the kidney, brain and intestine and brings about a significant decrease in the Km for glutamine but no change in the Vmax. C1 UNIV GRANADA,CTR CIENCIAS BIOL,DEPT BIOQUIM & BIOL MOLEC,AVE FUENTENUEVA S-N,E-18001 GRANADA,SPAIN. UNIV W INDIES,DEPT MED,KINGSTON 7,JAMAICA. NR 36 TC 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-6535 J9 CHEMOSPHERE JI Chemosphere PY 1991 VL 22 IS 5-6 BP 521 EP 528 PG 8 SC Environmental Sciences GA FN424 UT ISI:A1991FN42400009 ER PT J AU PRADO, B DELMORAL, A QUESADA, E RIOS, R MONTEOLIVASANCHEZ, M CAMPOS, V RAMOSCORMENZANA, A TI NUMERICAL TAXONOMY OF MODERATELY HALOPHILIC GRAM-NEGATIVE RODS ISOLATED FROM THE SALAR-DE-ATACAMA, CHILE SO SYSTEMATIC AND APPLIED MICROBIOLOGY LA English DT Article DE NUMERICAL TAXONOMY; MODERATELY HALOPHILIC BACTERIA; SOLAR SALTERNS; SALINE SOILS ID GEN-NOV; HYPERSALINE SOILS; BACTERIAL NAMES; APPROVED LISTS; SIMILARITIES; EUBACTERIA; DELEYA AB A total of 161 moderately halophilic Gram-negative rods isolated from The Salar de Atacama, Northern Chile, were examined for 119 phenotypic characters including morphological, physiological, biochemical, nutritional and antimicrobial susceptibility tests. The results together with those from reference strains, were subjected to numerical analysis, using both, the Simple Matching (S(SM)) and Jaccard (S(J)) coefficients and clustered by the unweighted pair group method of association (UPGMA). Using the S(SM) coefficient and UPGMA clustering, five phenons were obtained at a 70% similarity level. Representative strains from each phenon were chosen to determine DNA base composition and cellular morphology by electron microscopy. Strains in phenon A were assigned to the genus Vibrio. Strains in the other four phenons could not be assigned to any recognised taxon but their similarities to the genera Acinetobacter (phenon B), Marinomonas (phenon C) and Alteromonas (phenons D and E) are discussed. C1 PONTIFICIA UNIV CATOLICA VALPARAISO, FAC BASIC & MATH SCI, INST BIOL, MICROBIOL LAB, VALPARAISO, CHILE. UNIV GRANADA, FAC PHARM, DEPT MICROBIOL, GRANADA, SPAIN. NR 31 TC 12 PU GUSTAV FISCHER VERLAG PI STUTTGART PA WOLLGRASWEG 49, D-70599 STUTTGART, GERMANY SN 0723-2020 J9 SYST APPL MICROBIOL JI Syst. Appl. Microbiol. PD JUL PY 1991 VL 14 IS 3 BP 275 EP 281 PG 7 SC Biotechnology & Applied Microbiology; Microbiology GA FY216 UT ISI:A1991FY21600013 ER PT J AU ESPINOSACALIANI, JS ALVAREZGUISADO, L MUNOZCASTELLANOS, L ARANEGAJIMENEZ, A KURINIVON, M SANCHEZ, RS ARANEGAJIMENEZ, AE TI ATRIOVENTRICULAR SEPTAL-DEFECT - QUANTITATIVE ANATOMY OF THE RIGHT VENTRICLE SO PEDIATRIC CARDIOLOGY LA English DT Article DE ATRIOVENTRICULAR SEPTAL DEFECT; QUANTITATIVE ANATOMY; RIGHT VENTRICLE AB In 19 human fetal and newborn hearts with atrioventricular septal defect (AVSD), not associated with other anomalies, the two ventricles were studied morphometrically. A total of 17 different parameters were studied: nine in the right ventricle and eight in the left. In the right ventricle we analyzed ventricular wall thickness, length of right ventricular inflow and outflow tracts, and volume of right ventricular inflow and outflow tracts. The data for these parameters were compared with patterns of normality published previously, and the volumetric data were compared with patterns of normality published previously by us. The ventricular inflow tract was shorter than the outflow tract, the difference being especially significant in the left ventricle. The length of the diaphragmatic wall of the heart in both the right and left ventricle was equal to the sum of the length of the inflow tract and the thickness of the ventricular wall at the apex. C1 UNIV GRANADA,FAC MED,DEPT CIENCIAS MORFOL,SECC INVEST BASICA CARDIOVASC,AVDA MADRID S-N,E-18071 GRANADA,SPAIN. UNIV GRANADA,SCH MED,DEPT PHARMACOL,GRANADA,SPAIN. IGNACIO CHAVEZ NATL HEART INST,DEPT EMBRYOL,MEXICO CITY,MEXICO. NR 9 TC 2 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0172-0643 J9 PEDIAT CARDIOL JI Pediatr. Cardiol. PD OCT PY 1991 VL 12 IS 4 BP 206 EP 213 PG 8 SC Cardiac & Cardiovascular Systems; Pediatrics GA GF570 UT ISI:A1991GF57000003 ER PT J AU CASAS, M ESEBBAG, C EXTREMERA, A GETINO, JM DELLANO, M PLASTINO, A RUBIO, H TI COOPER PAIRING IN A SOLUBLE ONE-DIMENSIONAL MANY-FERMION MODEL SO PHYSICAL REVIEW A LA English DT Article ID QUARK CLUSTER MODEL; NUCLEAR-MATTER; BOSE CONDENSATION; SYSTEM; STATE; GAS AB The dynamical similarities between the three-dimensional (3D) electron fluid "jellium" model and the exactly soluble 1D fermion fluid with attractive delta-function pairwise potentials motivates solving the Cooper-pair problem in this model for all couplings and/or densities. This is accomplished exactly in graphical form. For weak coupling, the essential singularity characteristic of standard 3D low-temperature superconductivity reemerges, and for infinite coupling, BCS theory reproduces the exact ground-state system energy. C1 UNIV AUTONOMA MADRID,DEPT FIS TEOR,E-28049 MADRID,SPAIN. UNIV GRANADA,DEPT FIS MODERNA,E-18071 GRANADA,SPAIN. UNIV OVIEDO,DEPT FIS,E-33007 OVIEDO,SPAIN. N DAKOTA STATE UNIV,DEPT PHYS,FARGO,ND 58105. NATL UNIV LA PLATA,DEPT FIS,RA-1900 LA PLATA,ARGENTINA. RP CASAS, M, UNIV ILLES BALEARS,DEPT FIS,E-07071 PALMA DE MALLORCA,SPAIN. NR 30 TC 8 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD OCT 15 PY 1991 VL 44 IS 8 BP 4915 EP 4922 PG 8 SC Optics; Physics, Atomic, Molecular & Chemical GA GM060 UT ISI:A1991GM06000019 ER PT J AU HORTELANO, P GARCIASALGUERO, L ALLEYNE, GAO LUPIANEZ, JA TI VARIATIONS IN THE KINETIC RESPONSE OF SEVERAL DIFFERENT PHOSPHATE-DEPENDENT GLUTAMINASE ISOZYMES DURING ACUTE METABOLIC-ACIDOSIS SO MOLECULAR AND CELLULAR BIOCHEMISTRY LA English DT Article DE PHOSPHATE-DEPENDENT GLUTAMINASE; ACUTE METABOLIC ACIDOSIS; KINETICS; KIDNEY TUBULES; ENTEROCYTES; HEPATOCYTES; BRAIN TISSUE ID ACTIVATED GLUTAMINASE; RAT-KIDNEY; RENAL AMMONIAGENESIS; LIVER-MITOCHONDRIA; AMMONIUM-CHLORIDE; SMALL-INTESTINE; GLUTAMATE; LOCALIZATION; COMPARTMENTATION; ISOENZYMES AB We describe the kinetic modifications to mitochondrial-membrane-bound phosphate-dependent glutaminase in various types of rat tissue brought about by acute metabolic acidosis. The activity response of phosphate-dependent glutaminase to glutamine was sigmoidal, showing positive co-operativity, the Hill coefficients always being higher than 2. The enzyme from acidotic rats showed increased activity at subsaturating concentrations of glutamine in kidney tubules, as might be expected, but not in brain, intestine or liver tissues. Nevertheless, when brain and intestine from control rats were incubated in plasma from acutely acidotic rats enzyme activity increased at 1 mM glutamine in the same way as in kidney cortex. The enzyme from liver tissue remained unaltered. S0.5 and n(H) values decreased significantly in kidney tubules, enterocytes and brain slices preincubated in plasma from acidotic rats. The sigmoidal curves of phosphate-dependent glutaminase shifted to the left without any significant changes in V(max). The similar response of phosphate-dependent glutaminase to acute acidosis in the kidney, brain and intestine confirms the fact that enzymes from these tissues are kinetically identical and reaffirms the presence of an ammoniagenic factor in plasma, either produced or concentrated in the kidneys of rats with acute acidosis. C1 UNIV W INDIES,DEPT MED,KINGSTON 7,JAMAICA. RP LUPIANEZ, JA, UNIV GRANADA,CTR CIENCIAS BIOL,DEPT BIOQUIM & BIOL MOLEC,AVE FUENTENUEVA S-N,E-18001 GRANADA,SPAIN. NR 44 TC 3 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0300-8177 J9 MOL CELL BIOCHEM JI Mol. Cell. Biochem. PD DEC 11 PY 1991 VL 108 IS 2 BP 113 EP 123 PG 11 SC Cell Biology GA GR154 UT ISI:A1991GR15400003 ER PT J AU QUIROGA, J INSUASTY, B SANCHEZ, A NOGUERAS, M MEIER, H TI SYNTHESIS OF PYRIDO[2,3-D]PYRIMIDINES IN THE REACTION OF 6-AMINO-2,3-DIHYDRO-2-THIOXO-4(1H)-PYRIMIDINONE WITH CHALCONES SO JOURNAL OF HETEROCYCLIC CHEMISTRY LA English DT Article ID ANTIBACTERIAL ACTIVITY; DIURETIC ACTIVITY; BIOLOGICAL ACTION; DERIVATIVES; PYRIDO-<2,3-D>-PYRIMIDINE; PYRIDOPYRIMIDINES AB 6-Amino-2,3-dihydro-2-thioxo-4(1H)-pyrimidinone (1) reacts in boiling DMF with alpha,beta-unsaturated ketones 2 yielding the pyrido[2,3-d]pyrimidine systems 5 and 6, respectively. The orientation in the addition process can be determined by nmr measurements, especially by NOE difference spectroscopy. The products do not correspond to a normal Skraup or Doebner-v. Miller synthesis. C1 UNIV VALLE,DEPT CHEM,CALI,COLOMBIA. UNIV GRANADA,COL UNIV JAEN,DEPT ORGAN CHEM,E-23071 JAEN,SPAIN. UNIV MAINZ,INST ORGAN CHEM,W-6500 MAINZ,GERMANY. RP QUIROGA, J, UNIV LOS ANDES,DEPT CHEM,AA 4976,SANTE FE DE BOGOTA,COLOMBIA. NR 25 TC 25 PU HETERO CORPORATION PI TAMPA PA BOX 20285, TAMPA, FL 33622-0285 SN 0022-152X J9 J HETEROCYCL CHEM JI J. Heterocycl. Chem. PD AUG-SEP PY 1992 VL 29 IS 5 BP 1045 EP 1048 PG 4 SC Chemistry, Organic GA JR183 UT ISI:A1992JR18300002 ER PT J AU GALLO, M ROLDAN, G BURES, J TI DIFFERENTIAL ROLE OF PARABRACHIAL NUCLEUS, GUSTATORY CORTEX AND AMYGDALA IN THE ACQUISITION OF CONDITIONED TASTE-AVERSION SO EUROPEAN JOURNAL OF NEUROSCIENCE LA English DT Meeting Abstract C1 UNIV GRANADA,DEPT EXPTL PSYCHOL & PHYSIOL BEHAV,GRANADA,SPAIN. MEXICAN INST PSYCHIAT,MEXICO CITY,MEXICO. CZECHOSLOVAK ACAD SCI,INST PHYSIOL,CS-11142 PRAGUE 1,CZECHOSLOVAKIA. NR 0 TC 0 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0953-816X J9 EUR J NEUROSCI JI Eur. J. Neurosci. PY 1992 SU Suppl. 5 BP 152 EP 152 PG 1 SC Neurosciences GA KC682 UT ISI:A1992KC68200569 ER PT J AU GALLO, M ROLDAN, G BURES, J TI DIFFERENTIAL INVOLVEMENT OF GUSTATORY INSULAR CORTEX AND AMYGDALA IN THE ACQUISITION AND RETRIEVAL OF CONDITIONED TASTE-AVERSION IN RATS SO BEHAVIOURAL BRAIN RESEARCH LA English DT Article DE CONDITIONED TASTE AVERSION; AMYGDALA; INSULAR CORTEX; MEMORY; TETRODOTOXIN ID FLAVOR-ILLNESS AVERSIONS; INTRACEREBRAL INJECTION; DISRUPT TASTE; NEOCORTEX; LESIONS; TETRODOTOXIN; ODOR; BLOCKADE; NUCLEI; AREA AB Lesion studies of the role of the gustatory insular cort" (GC) and amygdala (Am) in conditioned taste aversion (CTA) are confounded by the irreversibility of the intervention. Functional ablation methods allow more specific influencing of different phases of CTA acquisition and retrieval. Bilateral tetrodotoxin (TTX) blockade of GC (10 ng) or Am (3 ng) before or after saccharin drinking in rats with chronically implanted intracerebral cannulae showed that GC is indispensable for the initial processing of the taste stimulus but not for the association of the gustatory trace with the symptoms of LiCl poisoning. Gustatory signals can by-pass the blocked Am, the inactivation of which, however, impairs the gustatory trace-poisoning association. TTX injection into both GC and Am impairs CTA retrieval more than isolated blockade of either of these structures. It is argued that GC and Am implement processing of gustatory and visceral signals, respectively, but that formation and consolidation of the CTA engram proceeds outside forebrain, probably at the level of the brainstem. C1 CZECHOSLOVAK ACAD SCI,INST PHYSIOL,VIDENSKA 1083,CS-14220 PRAGUE 4,CZECHOSLOVAKIA. UNIV GRANADA,DEPT PSICOL EXPTL & FISIOL COMPORTAMIENTO,GRANADA,SPAIN. INST MEXICANO PSIQUIATRIA,MEXICO CITY,MEXICO. RP BURES, J, CZECHOSLOVAK ACAD SCI,INST PHYSIOL,VIDENSKA 1083,CS-14220 PRAGUE 4,CZECHOSLOVAKIA. NR 40 TC 64 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-4328 J9 BEHAV BRAIN RES JI Behav. Brain Res. PD NOV 30 PY 1992 VL 52 IS 1 BP 91 EP 97 PG 7 SC Behavioral Sciences; Neurosciences GA KC870 UT ISI:A1992KC87000010 ER PT J AU STANKIEWICZ, J VILCHEZ, MAC ALVAREZ, RH TI 2-DIMENSIONAL AGGREGATION OF POLYSTYRENE LATEX-PARTICLES SO PHYSICAL REVIEW E LA English DT Article ID DIFFUSION-LIMITED AGGREGATION; CLUSTER-CLUSTER AGGREGATION; SIZE DISTRIBUTION; COLLOIDAL SILICA; GOLD COLLOIDS; 2 DIMENSIONS; GROWTH; MODEL AB Salt-induced aggregation of polystyrene latex confined to two dimensions on an air-water interface has been studied. Fractal dimensions of the aggregates are determined (i) from relation between the radius of gyration and cluster masses and (ii) by the box method. They both increase with aggregation time. While the fractal dimensions are insensitive to electrolyte concentration, the aggregation rate does depend on it. Our results for aggregation kinetics are in good agreement with the dynamic scaling law n(m)(t) is similar to m-2f(m/t(z)), for z = 1, for dilute latex dispersions [n(m)(t) is the number of clusters of size m at time t]. A nonlinear behavior in time, however, is observed for more concentrated latex dispersions. We find bell-shaped cluster-size distributions. C1 INST VENEZOLANO INVEST CIENT,CTR FIS,CARACAS 1020A,VENEZUELA. RP STANKIEWICZ, J, UNIV GRANADA,DEPT FIS APLICADA,E-18071 GRANADA,SPAIN. NR 32 TC 34 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD APR PY 1993 VL 47 IS 4 BP 2663 EP 2668 PG 6 SC Physics, Fluids & Plasmas; Physics, Mathematical GA KZ507 UT ISI:A1993KZ50700058 ER PT J AU MORENO, E PERICCHI, LR TI ON EPSILON-CONTAMINATED PRIORS WITH QUANTILE AND PIECE-WISE UNIMODALITY CONSTRAINTS SO COMMUNICATIONS IN STATISTICS-THEORY AND METHODS LA English DT Article DE CLASSES OF EPSILON-CONTAMINATED PRIORS; IMPRECISION; ROBUST BAYES; SHAPE AND QUANTILE CONSTRAINTS ID RANGES AB In this work we examine the epsilon-contamination model of prior densities GAMMA={pi: pi=(1-epsilon)pi0(theta) + epsilonq; q is-an-element-of G}, where pi0(theta) is the base elicited prior, q is a contamination belonging to some suitable class G and epsilon reflects the amount of error in pi0(theta). Various classes with shape and/or quantile constraints are analysed, and a posterior robust analysis is carried out. It turns out that quantile restrictions alone do not produce asymptotical rational behaviour, so it is unavoidable to introduce shape constraints as well. The conclusions are in line with those of O'Hagan and Berger (1988). Illustrations related to testing hypothesis and likelihood sets are given. C1 UNIV GRANADA,DEPT STAT,E-18071 GRANADA,SPAIN. UNIV SIMON BOLIVAR,CARACAS 9600,VENEZUELA. NR 12 TC 2 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0361-0926 J9 COMMUN STATIST-THEOR METHOD JI Commun. Stat.-Theory Methods PY 1993 VL 22 IS 7 BP 1963 EP 1978 PG 16 SC Statistics & Probability GA LK415 UT ISI:A1993LK41500012 ER PT J AU ZARZO, A MARTINEZ, A TI THE QUANTUM RELATIVISTIC HARMONIC-OSCILLATOR - SPECTRUM OF ZEROS OF ITS WAVE-FUNCTIONS SO JOURNAL OF MATHEMATICAL PHYSICS LA English DT Article AB The distribution of zeros of the wave functions of the quantum relativistic harmonic oscillator is studied. An analytic approximate expression for this distribution is derived within the framework of the WKB approximation. Using potential theory techniques, it is proved that this WKB approach gives the right asymptotic distribution, which is explicitly calculated. C1 UNIV LA HABANA,FAC MATEMAT & CIBERNET,DEPT TEORIA FUNCT,HAVANA,CUBA. RP ZARZO, A, UNIV GRANADA,FAC CIENCIAS,DEPT FIS MODERNA,E-18071 GRANADA,SPAIN. NR 14 TC 13 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0022-2488 J9 J MATH PHYS-NY JI J. Math. Phys. PD JUL PY 1993 VL 34 IS 7 BP 2926 EP 2935 PG 10 SC Physics, Mathematical GA LK510 UT ISI:A1993LK51000018 ER PT J AU ROMAGOSA, I FOX, PN DELMORAL, LFG RAMOS, JM DELMORAL, BG DETOGORES, FR MOLINACANO, JL TI INTEGRATION OF STATISTICAL AND PHYSIOLOGICAL ANALYSES OF ADAPTATION OF NEAR-ISOGENIC BARLEY LINES SO THEORETICAL AND APPLIED GENETICS LA English DT Article DE GENOTYPE X ENVIRONMENT INTERACTION; ADDITIVE MAIN EFFECTS AND MULTIPLICATIVE INTERACTION (AMMI) MODEL; MUTANT BARLEY LINES ID YIELD TRIAL AB Seven near-isogenic barley lines, differing for three independent mutant genes, were grown in 15 environments in Spain. Genotype x environment interaction (G x E) for grain yield was examined with the Additive Main Effects and Multiplicative interaction (AMMI) model. The results of this statistical analysis of multilocation yield-data were compared with a morpho-physiological characterization of the lines at two sites (Molina-Cano et al. 1990). The first two principal component axes from the AMMI analysis were strongly associated with the morpho-physiological characters. The independent but parallel discrimination among genotypes reflects genetic differences and highlights the power of the AMMI analysis as a tool to investigate G x E. Characters which appear to be positively associated with yield in the germplasm under study could be identified for some environments. C1 CIMMYT,MEXICO CITY 06600,DF,MEXICO. LA CRUZ DEL CAMPO SA,MALTING & BREWING CO,E-41007 SEVILLE,SPAIN. UNIV GRANADA,DEPT PLANT BIOL,GRANADA,SPAIN. RP ROMAGOSA, I, IRTA,CTR UDL,AV ROVIRA ROURE 177,E-25006 LLEIDA,SPAIN. NR 8 TC 6 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0040-5752 J9 THEOR APPL GENET JI Theor. Appl. Genet. PD AUG PY 1993 VL 86 IS 7 BP 822 EP 826 PG 5 SC Agronomy; Plant Sciences; Genetics & Heredity; Horticulture GA LX230 UT ISI:A1993LX23000003 ER PT J AU PRADO, B DELMORAL, A CAMPOS, V TI DISTRIBUTION AND TYPES OF HETEROTROPIC HALOPHILIC FLORA FROM SALAR DE ATACAMA, CHILE SO TOXICOLOGICAL AND ENVIRONMENTAL CHEMISTRY LA English DT Article ID NUMERICAL TAXONOMY; BACTERIA AB Samples were taken at different saline habitats (water, soils and sediments) in the Salar de Atacama (Chile) and later quantitatively analysed using media with a wide range of salt concentrations. Results obtained were nearly similar in all places studied, although counts differed depending on salt concentrations in the media. A total of 361 moderately and 75 extremely halophilic strains were selected and their preliminary taxonomic position was studied. C1 UNIV GRANADA, FAC FARM, DEPT MICROBIOL, E-18071 GRANADA, SPAIN. RP PRADO, B, PONTIFICIA UNIV CATOLICA VALPARAISO, MICROBIOL AMBIENTAL LAB, VALPARAISO, CHILE. NR 13 TC 4 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0277-2248 J9 TOXICOL ENVIRON CHEM PY 1993 VL 38 IS 3-4 BP 163 EP 166 PG 4 SC Chemistry, Multidisciplinary; Environmental Sciences; Toxicology GA MC755 UT ISI:A1993MC75500004 ER PT J AU MORENO, E PERICCHI, LR TI BAYESIAN ROBUSTNESS FOR HIERARCHICAL EPSILON-CONTAMINATION MODELS SO JOURNAL OF STATISTICAL PLANNING AND INFERENCE LA English DT Article DE EPSILON-CONTAMINATED CLASSES OF PRIORS; HIERARCHICAL MODEL; ROBUST BAYES; SCALE MIXTURE OF NORMALS AB In the robust Bayesian literature in order to investigate robustness with respect to the functional form of a base prior distribution pi0 (in particular with respect to the shape of the prior tails) the epsilon-contamination model of prior distributions GAMMA={pi:pi=(1-epsilon)pi0(theta\lambda)+epsilonq,q is-an-element-of Q}, has been proposed. Here pi0(theta\lambda) is the base elicited prior, lambda is a vector of fixed hyperparameters, q is a contamination belonging to some suitable class Q and epsilon reflects the amount of error in pi0(theta\lambda). For the location-scale family of priors pi0(theta\lambda)=tau-1pi0[(theta-mu)/tau], where lambda=(mu,tau), it turns out that the posterior inference is highly sensitive to changes of lambda. Therefore, instead of considering a single base prior pi0, it is reasonable to replace pi0(theta\lambda) by pi0(theta\lambda1)=integral pi0(theta\lambda1,lambda2)h(dlambda2), where lambda1, is the 'known' part of lambda and lambda2 is the 'uncertain' part, with the uncertainty reflected by allowing h is-an-element-of H (H being a class of probability measures). Classes considered here include those with unimodality and quantile constraints. Ranges of posterior probabilities of any set may be computed. Illustrations related to normal hypothesis testing are given. C1 UNIV GRANADA,DEPT ESTADIST & INVEST OPERAT,E-18071 GRANADA,SPAIN. UNIV SIMON BOLIVAR,CARACAS,VENEZUELA. NR 14 TC 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3758 J9 J STATIST PLAN INFER JI J. Stat. Plan. Infer. PD NOV PY 1993 VL 37 IS 2 BP 159 EP 167 PG 9 SC Statistics & Probability GA MF306 UT ISI:A1993MF30600003 ER PT J AU INSUASTY, B RAMOS, M QUIROGA, J SANCHEZ, A NOGUERAS, M HANOLD, N MEIER, H TI THE REACTION OF AROMATIC ALPHA-BETA-UNSATURATED KETONES WITH 4,5-DIAMINO-1,6-DIHYDROPYRIMIDIN-6-ONES SO JOURNAL OF HETEROCYCLIC CHEMISTRY LA English DT Article AB The reaction of 4,5-diamino-1,6-dihydropyrimidin-6-ones 1 with one equivalent of the chalcones 2 leads in an acidic medium to the formation of the 2,4-diaryl-2,3,6,7-tetrahydro-1H-pyrimido[4,5-b][l,4]diazepin-ones 3a-m. The structure elucidation of the products is based on detailed nmr investigations including selective C-13{H-1} decoupling experiments. C1 UNIV LOS ANDES,DEPT CHEM,BOGOTA,COLOMBIA. UNIV GRANADA,COLEGIO UNIV JAEN,DEPT CHEM,E-23071 JAEN,SPAIN. UNIV MAINZ,INST ORGAN CHEM,D-55099 MAINZ,GERMANY. RP INSUASTY, B, UNIV VALLE,DEPT CHEM,AA 25360,CALI,COLOMBIA. NR 12 TC 14 PU HETERO CORPORATION PI TAMPA PA BOX 20285, TAMPA, FL 33622-0285 SN 0022-152X J9 J HETEROCYCL CHEM JI J. Heterocycl. Chem. PD JAN-FEB PY 1994 VL 31 IS 1 BP 61 EP 64 PG 4 SC Chemistry, Organic GA MZ758 UT ISI:A1994MZ75800011 ER PT J AU BRUNSER, O ESPINOZA, J ARAYA, M CRUCHET, S GIL, A TI EFFECT OF DIETARY NUCLEOTIDE SUPPLEMENTATION ON DIARRHEAL DISEASE IN INFANTS SO ACTA PAEDIATRICA LA English DT Article DE BACTERIA; DIARRHEA; INFANTS; INTESTINAL REPAIR; NUCLEOTIDES ID LYMPHOCYTE-T; GROWTH; PURINES; PROTEIN; DENOVO; MILK; RAT AB The effects of a nucleotide-supplemented formula on diarrhoeal disease was studied in 141 infants (group 1) who belonged to the low socioeconomic stratum; 148 controls (group 2) received the same formula but unsupplemented. Group 1 experienced less episodes of diarrhoea (109 versus 140), including less first episodes (74 versus 102; chi-square = 8.19, p < 0.004; odds ratio 2.01) and for a lesser number of days (807 versus 996 days); 45.0% and 31.1% of infants in groups 1 and 2, respectively, never developed episodes of diarrhoea. There were no differences in the clinical characteristics of the episodes or in the enteropathogens isolated from symptomatic or asymptomatic infants. The mechanisms through which nucleotides decrease the incidence of diarrhoeal disease in infants remain unclear. C1 UNIV GRANADA,DEPT BIOCHEM & MOLEC BIOL,E-18071 GRANADA,SPAIN. RP BRUNSER, O, UNIV SANTIAGO CHILE,INST NUTR & FOOD TECHNOL,GASTROENTEROL UNIT,CASILLA 138-11,SANTIAGO,CHILE. NR 30 TC 57 PU SCANDINAVIAN UNIVERSITY PRESS PI OSLO PA PO BOX 2959 TOYEN, JOURNAL DIVISION CUSTOMER SERVICE, N-0608 OSLO, NORWAY SN 0803-5253 J9 ACTA PAEDIAT JI Acta Paediatr. PD FEB PY 1994 VL 83 IS 2 BP 188 EP 191 PG 4 SC Pediatrics GA NB066 UT ISI:A1994NB06600016 ER PT J AU GONZALEZMIRANDA, JM LABARTA, A PUMA, M FERNANDEZ, JF GARRIDO, PL MARRO, J TI MONTE-CARLO STUDY OF A KINETIC LATTICE MODEL WITH RANDOM DIFFUSION OF DISORDER SO PHYSICAL REVIEW E LA English DT Article ID SPIN-GLASSES; ISING-MODEL AB We report Monte Carlo results for a nonequilibrium Ising-like model in two and three dimensions. Nearest-neighbor interactions J change sign randomly with time due to competing kinetics. There follows a fast and random, i.e., spin-configuration-independent diffusion of Js, of the kind that takes place in dilute metallic alloys when magnetic ions diffuse. The system exhibits steady states of the ferromagnetic (antiferromagnetic) type when the probability p that J > 0 is large (small) enough. No counterpart to the freezing phenomena found in quenched spin glasses occurs. We compare our results with existing mean-field and exact ones, and obtain information about critical behavior. C1 UNIV SIMON BOLIVAR,DEPT FIS,CARACAS,VENEZUELA. INST VENEZOLANO INVEST CIENTIF,CTR FIS,CARACAS 1020A,VENEZUELA. UNIV GRANADA,INST CARLOS 1 FIS TEOR & COMPUTAC,E-18071 GRANADA,SPAIN. UNIV GRANADA,FAC CIENCIAS,DEPT FIS,E-18071 GRANADA,SPAIN. UNIV GRANADA,FAC CIENCIAS,DEPT FIS APLICADA,E-18071 GRANADA,SPAIN. RP GONZALEZMIRANDA, JM, UNIV BARCELONA,FAC FIS,DEPT FIS FUNDAMENTAL,DIAGONAL 647,E-08028 BARCELONA,SPAIN. NR 16 TC 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD MAR PY 1994 VL 49 IS 3 BP 2041 EP 2048 PG 8 SC Physics, Fluids & Plasmas; Physics, Mathematical GA NC465 UT ISI:A1994NC46500035 ER EFFN ISI Export Format VR 1.0 PT J AU ESCANDAR, GM SIERRA, MG PEREGRIN, JMS LABADIE, G SANTORO, M FRUTOS, A SALA, LF TI INTERACTION OF ZINC(II) ION WITH D-ALDONIC ACIDS IN THE CRYSTALLINE SOLID AND AQUEOUS-SOLUTION SO POLYHEDRON LA English DT Article ID D-GLUCURONIC ACID; INFRARED-SPECTRA; COMPLEXES; CALCIUM AB The interaction of zinc(II) ion with D-glucoheptonic acid, D-gluconic acid, D-gulonic acid, D-galactonic acid and D-ribonic acid has been investigated and compounds of the type Zn(D-glucoheptonate)2 . 3H2O. Zn(D-gluconate)2 . 3H2O, Zn(D-gulonate)2 . 3H2O, Zn(D-galactonate)2 . 3H2O and Zn(D-ribonate)2 . H2O, have been isolated. These metal-sugar salts were characterized by elemental analysis, FT IR spectroscopy, thermogravimetric analysis and C-13-NMR. Spectroscopic measurements showed similar patterns between these complexes and the structurally identified Mn(D-gluconate)2 . 2H2O. The zinc(II) ion is binding to two ligand molecules through the carboxylate and OH groups of each sugar, as well as to water molecules. The potentiometric measurements in aqueous solutions for the systems formed by the sugar acids investigated and the zinc(II) ion at different metal-ligand ratios showed the 1 : 1 complexes formation. On the basis of the C-13 NMR, the participation of C-1 and C-2 in this complex formation was verified. Due to the hydroxide precipitation, quantitative evaluation of the stability constants was not performed. C1 UNIV NACL ROSARIO,FAC CIENCIAS BIOQUIM & FARMACEUT,DEPT QUIM FIS,SUIPACHA 531,RA-2000 ROSARIO,ARGENTINA. UNIV NACL ROSARIO,FAC CIENCIAS BIOQUIM & FARMACEUT,DEPT QUIM ANALIT,RA-2000 ROSARIO,ARGENTINA. UNIV NACL ROSARIO,FAC CIENCIAS BIOQUIM & FAMACEUT,IQUIOS,RA-2000 ROSARIO,ARGENTINA. UNIV GRANADA,DEPT QUIM INORGAN,E-18071 GRANADA,SPAIN. NR 20 TC 18 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0277-5387 J9 POLYHEDRON JI Polyhedron PD MAR-APR PY 1994 VL 13 IS 6-7 BP 909 EP 914 PG 6 SC Chemistry, Inorganic & Nuclear; Crystallography GA NE635 UT ISI:A1994NE63500009 ER PT J AU UAUY, R QUAN, R GIL, A TI ROLE OF NUCLEOTIDES IN INTESTINAL DEVELOPMENT AND REPAIR - IMPLICATIONS FOR INFANT NUTRITION SO JOURNAL OF NUTRITION LA English DT Article DE DIETARY NUCLEOTIDES; INFANT NUTRITION; INTESTINAL DEVELOPMENT ID ACID-SOLUBLE NUCLEOTIDES; DIETARY NUCLEOTIDES; NUCLEIC-ACIDS; HUMAN-MILK; RAT SMALL; PURINES; EXPRESSION; LACTATION; DENOVO; COWS AB Dietary sources of nucleotides may be conditionally essential nutrients. Rapidly growing tissues such as the intestinal epithelium and lymphoid cells lack significant capacity for de novo synthesis of nucleotides and require exogenous sources of purine and pyrimidine bases. Dietary purines are not significantly incorporated into hepatic nucleic acids, but pyrimidines are. Both are taken up by intestinal cells with excess purines converted to uric acid. Nucleotides are important for normal development, maturation and repair of the gastrointestinal tract. Human milk is the best source of nucleotides for young infants because cow's milk is lacking in nucleotide content. It is likely that infant formulas should have sources of nucleotides added to more closely duplicate human milk and provide these substrates for maximal intestinal development and repair. C1 UNIV TEXAS,SW MED CTR DALLAS,DALLAS,TX 75235. UNIV GRANADA,DEPT BIOCHEM & MOLEC BIOL,E-18071 GRANADA,SPAIN. RP UAUY, R, UNIV CHILE,INST NUTR & TECNOL ALIMENTOS,SANTIAGO 11,CHILE. NR 38 TC 45 PU AMER INST NUTRITION PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0022-3166 J9 J NUTR JI J. Nutr. PD AUG PY 1994 VL 124 IS 8 SU Suppl. S BP S1436 EP S1441 PG 6 SC Nutrition & Dietetics GA PC376 UT ISI:A1994PC37600030 ER PT J AU ARCOYA, D CALAHORRANO, M TI SOME DISCONTINUOUS PROBLEMS WITH A QUASI-LINEAR OPERATOR SO JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS LA English DT Article ID ELLIPTIC PROBLEMS C1 SCUOLA NORMALE SUPER PISA,I-56126 PISA,ITALY. ESCUELA POLITEC NACL,FAC CIENCIAS,QUITO,ECUADOR. RP ARCOYA, D, UNIV GRANADA,DEPT ANAL MATEMAT,E-18071 GRANADA,SPAIN. NR 15 TC 7 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0022-247X J9 J MATH ANAL APPL JI J. Math. Anal. Appl. PD NOV 1 PY 1994 VL 187 IS 3 BP 1059 EP 1072 PG 14 SC Mathematics, Applied; Mathematics GA PN680 UT ISI:A1994PN68000023 ER PT J AU MARRO, J FERNANDEZ, JF GONZALEZMIRANDA, JM PUMA, M TI ISING CRITICAL-BEHAVIOR OF A NON-HAMILTONIAN LATTICE SYSTEM SO PHYSICAL REVIEW E LA English DT Note ID PHASE-TRANSITIONS; MODEL AB We study steady states in d-dimensional lattice systems that evolve in time by a probabilistic majority rule, which corresponds to the zero-temperature limit of a system with conflicting dynamics. The rule satisfies detailed balance for d = 1 but not for d > 1. We find numerically nonequilibrium critical points of the Ising class for d = 2 and 3. C1 UNIV GRANADA,FAC CIENCIAS,DEPT FIS APLICADA,E-18071 GRANADA,SPAIN. UNIV BARCELONA,FAC FIS,DEPT FIS FUNDAMENTAL,E-08028 BARCELONA,SPAIN. UNIV SIMON BOLIVAR,DEPT FIS,CARACAS 1080A,VENEZUELA. INST VENEZOLANO INVEST CIENT,CTR FIS,CARACAS,VENEZUELA. RP MARRO, J, UNIV GRANADA,FAC CIENCIAS,INST CARLOS I FIS TEOR & COMPUTAC,E-18071 GRANADA,SPAIN. NR 18 TC 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD OCT PY 1994 VL 50 IS 4 BP 3237 EP 3240 PG 4 SC Physics, Fluids & Plasmas; Physics, Mathematical GA PP118 UT ISI:A1994PP11800106 ER PT J AU BUELACASAL, G SIERRA, JC LUNAVILLEGAS, G CARRASCO, T LUNAADAME, M FERNANDEZGUARDIOLA, AY TI SEX-RELATED DIFFERENCES IN RESIDUAL EFFECTS OF A SINGLE ORAL DOSE OF DIAZEPAM ON VIGILANCE SO JOURNAL OF PSYCHOPHYSIOLOGY LA English DT Meeting Abstract C1 UNIV GRANADA,DEPT PSYCHOL,GRANADA,SPAIN. MEXICAN INST PSYCHIAT,MEXICO CITY,DF,MEXICO. NR 0 TC 0 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0269-8803 J9 J PSYCHOPHYSIOL JI J. Psychophysiol. PY 1994 VL 8 IS 3 BP 251 EP 251 PG 1 SC Psychology, Biological; Neurosciences GA QH057 UT ISI:A1994QH05700022 ER PT J AU SIERRA, JC LUNAVILLEGAS, G BUELACASA, G LUNAADAME, M CARRASCO, T FERNANDEZGUARDIOLA, AY TI THE ASSESSMENT OF RESIDUAL EFFECTS OF A SINGLE-DOSE OF DIAZEPAM ON VISUALLY DEFINED EEG PATTERNS SO JOURNAL OF PSYCHOPHYSIOLOGY LA English DT Meeting Abstract C1 UNIV GRANADA,DEPT PSYCHOL,GRANADA,SPAIN. MEXICAN INST PSYCHIAT,MEXICO CITY,DF,MEXICO. NR 0 TC 0 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0269-8803 J9 J PSYCHOPHYSIOL JI J. Psychophysiol. PY 1994 VL 8 IS 4 BP 367 EP 367 PG 1 SC Psychology, Biological; Neurosciences GA QL276 UT ISI:A1994QL27600060 ER PT J AU SANCHEZSESMA, FJ LUZON, F TI SEISMIC RESPONSE OF 3-DIMENSIONAL ALLUVIAL VALLEYS FOR INCIDENT P-WAVES, S-WAVES, AND RAYLEIGH-WAVES SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article ID SEDIMENT-FILLED VALLEYS; BOUNDARY-ELEMENT METHOD; 3-DIMENSIONAL SURFACE IRREGULARITIES; STRONG GROUND MOTION; ELASTIC-WAVES; ARBITRARY SHAPE; NUMBER REPRESENTATION; MEXICO-CITY; HALF-SPACE; DIFFRACTION AB A simplified indirect boundary-element method (BEM) is presented. It is used to compute the seismic response of three-dimensional alluvial valleys under incident P, S, and Rayleigh waves. The method is based on the integral representations for scattered elastic waves using single-layer boundary sources. This approach is called indirect BEM in the literature as the sources strengths should be obtained as an intermediate step. Scattered waves are constructed at the boundaries from which they radiate. Therefore, this method can be regarded as a numerical realization of Huygens' principle. Boundary conditions lead to a system of integral equations for boundary sources. A simplified discretization scheme is used. It is based on the approximate rectification of the surfaces involved using circles for the numerical and analytical integration of the exact Green's function for the unbounded elastic space. Various examples are given for three-dimensional problems of scattering and diffraction of elastic waves by soft elastic inclusion models of alluvial deposits in an elastic halfspace. Results are displayed in both frequency and time domains. These results show the significant influence of locally generated surface waves in seismic response, and they evince three-dimensional effects. C1 CTR INVEST SISM,MEXICO CITY 14200,DF,MEXICO. UNIV GRANADA,INST ANDALUZ GEOFIS & PREVENC DESASTRES SISM,E-18080 GRANADA,SPAIN. UNIV ALMERIA,DEPT FIS APLICADA,E-0471 ALMERIA,SPAIN. RP SANCHEZSESMA, FJ, NATL AUTONOMOUS UNIV MEXICO,INST INGN,MEXICO CITY 04510,DF,MEXICO. NR 63 TC 60 PU SEISMOLOGICAL SOC AMER PI EL CERRITO PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 SN 0037-1106 J9 BULL SEISMOL SOC AMER JI Bull. Seismol. Soc. Amer. PD FEB PY 1995 VL 85 IS 1 BP 269 EP 284 PG 16 SC Geochemistry & Geophysics GA QJ469 UT ISI:A1995QJ46900019 ER PT J AU TORO, LAW TI (I,Q)-GRADED LIE ALGEBRAIC EXTENSIONS OF THE POINCARE ALGEBRA, CONSTRAINTS ON I AND Q SO JOURNAL OF MATHEMATICAL PHYSICS LA English DT Article ID GEOMETRY; PARTICLES; CALCULUS; BOSONS C1 CTR BRASILEIRO PESQUISAS FIS,CTR LATINO AMER FIS,BR-22290 RIO JANEIRO,BRAZIL. RP TORO, LAW, UNIV GRANADA,FAC CIENCIAS,DEPT FIS TEOR & COSMOS,E-18071 GRANADA,SPAIN. NR 42 TC 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0022-2488 J9 J MATH PHYS-NY JI J. Math. Phys. PD APR PY 1995 VL 36 IS 4 BP 2085 EP 2112 PG 28 SC Physics, Mathematical GA QQ234 UT ISI:A1995QQ23400037 ER PT J AU FARBER, MD MONTAGNA, AE PAVETO, C DOLLET, M SANCHEZMORENO, M OSUNA, A TORRES, HN FLAWIA, MM TI ADENYLYL-CYCLASE AND G-PROTEINS IN PHYTOMONAS SO JOURNAL OF EUKARYOTIC MICROBIOLOGY LA English DT Article DE ADP-RIBOSYLATION; CHOLERA TOXIN; PERTUSSIS TOXIN; PLANT TRYPANOSOMATIDS ID BINDING PROTEINS; IDENTIFICATION; PURIFICATION; MEMBRANES; PROTOZOA; BRAIN AB Phytomonas sp. membranes have an adenylyl cyclase activity which is greater in the presence of Mn2+ than with Mg2+. The Mg2+ and Mn2+ activity ratio varies from one membrane preparation to another, suggesting that the adenylyl cyclase has a variable activation state. A [S-35]GTP-gamma-S-binding activity with a Kd of 171 nM was detected in Phytomonas membranes. Incubation of these membranes with activated cholera or pertussis toxin and [adenylate P-32]NAD(+) led to incorporation of radioactivity into bands of about 40-44 kDa. Crude membranes were electrophoresed on SDS-polyacrylamide gels and analyzed, by Western blotting, with the 9188 anti-alpha, antibody and the AS/7 antibody (anti-alpha(1), anti-alpha(i1), anti-alpha(i2)). These procedures resulted in the identification of polypeptides of approximately 40-44 kDa. Phytomonas adenylyl cyclase could be activated by treatment of membrane preparations with cholera toxin, in the presence of NAD(+), while similar treatment with pertussis toxin did not affect this enzyme activity. These studies indicate that in Phytomonas, adenylyl cyclase activity is coupled to an unknown receptor entity through Gel, proteins. C1 INST INVEST INGN GENET & BIOL MOLEC,RA-1428 BUENOS AIRES,DF,ARGENTINA. UNIV BUENOS AIRES,FAC CIENCIAS EXACTAS & NAT,RA-1428 BUENOS AIRES,DF,ARGENTINA. CTR COOPERAT INT RECH AGRON DEV,DEPT CULTURES PERENNES,MONTPELLIER,FRANCE. UNIV GRANADA,FAC CIENCIAS,CATEDRA PARASITOL MOLEC,GRANADA,SPAIN. NR 20 TC 3 PU SOC PROTOZOOLOGISTS PI POTOMAC PA 12263 GREENLEAF AVE, POTOMAC, MD 20854 SN 1066-5234 J9 J EUKARYOT MICROBIOL JI J. Eukaryot. Microbiol. PD MAY-JUN PY 1995 VL 42 IS 3 BP 257 EP 260 PG 4 SC Microbiology GA RD345 UT ISI:A1995RD34500013 ER PT J AU ROS, A VERGASTA, E TI STABILITY FOR HYPERSURFACES OF CONSTANT MEAN-CURVATURE WITH FREE-BOUNDARY SO GEOMETRIAE DEDICATA LA English DT Article ID CONVEX-BODIES; SURFACES; EIGENVALUE AB The partitioning problem for a smooth convex body B subset of R(3) consists in to study, among surfaces which divide B in two pieces of prescribed volume, those which are critical points of the area functional. We study stable solutions of the above problem: we obtain several topological and geometrical restrictions for this kind of surfaces. In the case that B is a Euclidean ball we obtain stronger results. C1 UNIV GRANADA,DEPT GEOMETRIA & TOPOL,E-18071 GRANADA,SPAIN. UNIV FED BAHIA,DEPT MATEMAT,BAHIA BLANCA,ARGENTINA. NR 21 TC 12 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0046-5755 J9 GEOM DEDIC JI Geod. Dedic. PD JUN PY 1995 VL 56 IS 1 BP 19 EP 33 PG 15 SC Mathematics GA RJ059 UT ISI:A1995RJ05900004 ER PT J AU ORTEGA, R TINEO, A TI ON THE NUMBER OF POSITIVE PERIODIC-SOLUTIONS FOR PLANAR COMPETING LOTKA-VOLTERRA SYSTEMS SO JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS LA English DT Article C1 UNIV LOS ANDES,FAC CIENCIAS,DEPT MATEMAT,MERIDA 5101,VENEZUELA. RP ORTEGA, R, UNIV GRANADA,FAC CIENCIAS,DEPT MATEMAT APLICADA,E-18071 GRANADA,SPAIN. NR 4 TC 7 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0022-247X J9 J MATH ANAL APPL JI J. Math. Anal. Appl. PD AUG 1 PY 1995 VL 193 IS 3 BP 975 EP 978 PG 4 SC Mathematics, Applied; Mathematics GA RL855 UT ISI:A1995RL85500016 ER PT J AU FERNANDEZ, JF ALONSO, JJ STANKIEWICZ, J TI ONE-STAGE CONTINUOUS MELTING TRANSITION IN 2 DIMENSIONS SO PHYSICAL REVIEW LETTERS LA English DT Article ID MAGNETIC-BUBBLE ARRAYS; 2 DIMENSIONS; SOLIDS; SYSTEM AB Monte Carlo results are reported for melting of two-dimensional systems of N hard disks for various values of N. Runs of up to 10(8) Monte Carlo sweeps give the following equilibrium results: (1) there is a single second-order transition at volume v(c) = 1.260 +/- 0.005; (2) the orientational order parameter drops discontinuously to zero at v = v(c); (3) v(6) = 0.30 +/- 0.05 at v = v(c); (4) there is consistency with xi = exp(b/u(1/2)) in the isotropic phase, where u = v - v, and b similar or equal to 0.8. An intermediate phase in which the volume can vary by more than about 1% is ruled out. C1 UNIV GRANADA,DEPT FIS APLICADA,E-18071 GRANADA,SPAIN. RP FERNANDEZ, JF, INST VENEZOLANO INVEST CIENT,APARTADO 21827,CARACAS 1020A,VENEZUELA. NR 24 TC 41 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD NOV 6 PY 1995 VL 75 IS 19 BP 3477 EP 3480 PG 4 SC Physics, Multidisciplinary GA TC975 UT ISI:A1995TC97500026 ER PT J AU FERNANDEZ, JF POLO, IM TI CRITICAL PERCOLATION IN SYSTEMS OF MOBILE DISKS SO EUROPHYSICS LETTERS LA English DT Article ID TRANSPORT; MICROEMULSIONS; DIFFUSION; LATTICE AB Numerical results for critical diffusion in a percolating system of moving disks are reported. Critical percolation ensues as the disk density rho approaches the percolation threshold density rho(c) and u --> 0, where u is a measure of disk speed. Pure percolation behaviour is observed only for u much less than(rho(c) - rho)(1/q), where q similar or equal to 0.3. For u much greater than(rho(c) - rho)(1/q), diffusion is dominated by kinetic effects; therein, D similar to u(qu), where D is the diffusion constant and u similar or equal to 1.3. C1 UNIV GRANADA,DEPT FIS APLICADA,E-18071 GRANADA,SPAIN. INST VENEZOLANO INVEST CIENT,CTR FIS,CARACAS 1020A,VENEZUELA. RP FERNANDEZ, JF, UNIV GRANADA,INST CARLOS FIS TEOR & COMPUTAC 1,E-18071 GRANADA,SPAIN. NR 14 TC 0 PU EDITIONS PHYSIQUE PI LES ULIS CEDEX PA Z I DE COURTABOEUF AVE 7 AV DU HOGGAR, BP 112, 91944 LES ULIS CEDEX, FRANCE SN 0295-5075 J9 EUROPHYS LETT JI Europhys. Lett. PD NOV 1 PY 1995 VL 32 IS 4 BP 301 EP 306 PG 6 SC Physics, Multidisciplinary GA TE877 UT ISI:A1995TE87700003 ER PT J AU Martines, A Sarso, A Yanes, R TI Two approaches to the asymptotics of the zeros of a class of hypergeometric-type polynomials SO RUSSIAN ACADEMY OF SCIENCES SBORNIK MATHEMATICS LA English DT Article ID RELATIVISTIC HARMONIC-OSCILLATOR AB A class of hypergeometric-type differential equations is considered. It is shown that its polynomial solutions y(n) exhibit an orthogonality with respect to a ''varying measure'' (a sequence of measures) on R. From this relation the asymptotic distribution of zeros is obtained by means of a potential theory approach. Moreover, the WKB or semiclassical approximation is used to construct an asymptotically exact sequence of absolutely continuous measures that approximate the zero distribution of y(n). C1 UNIV POLITECN MADRID,ETS INGN IND,MADRID,SPAIN. UNIV GRANADA,FAC CIENCIAS,GRANADA,SPAIN. RP Martines, A, UNIV HAVANA,FAC MATEMAT & COMP,HAVANA,CUBA. NR 20 TC 3 PU AMER MATHEMATICAL SOC PI PROVIDENCE PA 201 CHARLES ST, PROVIDENCE, RI 02940-2213 SN 1064-5616 J9 RUSS ACAD SCI SB MATH-ENGL TR JI Russ. Acad. Sci. Sb. Math. PY 1995 VL 83 IS 2 BP 483 EP 494 PG 12 SC Mathematics GA TQ103 UT ISI:A1995TQ10300012 ER PT J AU SanchezSesma, FJ Luzon, F TI Can horizontal P waves be trapped and resonate in a shallow sedimentary basin? SO GEOPHYSICAL JOURNAL INTERNATIONAL LA English DT Article DE layered media; P waves; sedimentary basins ID 1985 MICHOACAN EARTHQUAKE; MEXICO-CITY; SEISMIC RESPONSE; FILLED VALLEYS; GROUND MOTION; INCIDENT-P; RAYLEIGH-WAVES; SV-WAVES; AMPLIFICATION; SURFACE AB It has been proposed recently that horizontal P waves can be trapped and resonate laterally in a shallow sedimentary basin. In this work, it is shown both theoretically and numerically that in a sedimentary basin of finite lateral extent trapped horizontal P waves, if they exist, are not a stable way of propagation and therefore cannot resonate. C1 CTR INVEST SISM AC,MEXICO CITY 14200,DF,MEXICO. UNIV GRANADA,INST ANDALUZ GEOFIS & PREVENC DESASTRES SISMICOS,E-18080 GRANADA,SPAIN. UNIV ALMERIA,DEPT FIS APLICADA,E-0471 ALMERIA,SPAIN. RP SanchezSesma, FJ, UNAM,INST INGN,CD UNIV,APDO 70-472,MEXICO CITY 04510,DF,MEXICO. NR 39 TC 7 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0956-540X J9 GEOPHYS J INT JI Geophys. J. Int. PD JAN PY 1996 VL 124 IS 1 BP 209 EP 214 PG 6 SC Geochemistry & Geophysics GA TN693 UT ISI:A1996TN69300017 ER PT J AU Baran, EJ Mercader, RC HuesoUrena, F MorenoCarretero, MN QuirosOlozabal, M SalasPeregrin, JM TI Crystal structure, Raman and Fe-57 Mossbauer spectra of the Fe-II complex of iso-orotic acid SO POLYHEDRON LA English DT Article ID 2-THIOISOOROTIC ACIDS; THERMAL-BEHAVIOR; METAL-COMPLEXES; ISOOROTATE; AMMONIUM AB The crystal structure of [Fe(H(2)isoor)(2)(H2O)(2)]. 2H(2)O has been solved by single-crystal X-ray diffractometry. Thermogravimetric analysis shows simultaneous loss of all water molecules between 120 and 266 degrees C, followed immediately by a rapid degradation of the compound. A comparative analysis of the Raman spectra of the complex with that of free iso-orotic acid allowed a straightforward assignment of the vibrations of the ligand groups involved in coordination. The Fe-57 Mossbauer spectrum of the complex confirms the presence of a high-spin Fe-II ion and the distortion of the octahedral Fe-II environment. C1 UNIV JAEN,DEPT QUIM INORGAN & ORGAN,E-23071 JAEN,SPAIN. UNIV GRANADA,DEPT QUIM INORGAN,E-18071 GRANADA,SPAIN. RP Baran, EJ, NATL UNIV LA PLATA,FAC CIENCIAS EXACTAS,DEPT FIS,C CORREO 962,RA-1900 LA PLATA,ARGENTINA. NR 13 TC 21 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0277-5387 J9 POLYHEDRON JI Polyhedron PD MAY PY 1996 VL 15 IS 10 BP 1717 EP 1721 PG 5 SC Chemistry, Inorganic & Nuclear; Crystallography GA TY305 UT ISI:A1996TY30500012 ER PT J AU Alvarez, L MunozCastellanos, L EspinosaCaliani, JS KuriNivon, M Saucedo, R Fernandez, JE Aranega, A TI Atrioventricular septal defect: Quantitative anatomy of the left ventricle SO PEDIATRIC CARDIOLOGY LA English DT Article DE atrioventricular septal defect; left ventricle; quantitative anatomy AB A morphometric study was performed in 18 human hearts with atrioventricular septal defect not associated with other anomalies; 16 hearts had common atrioventricular orifices, and 2 presented separate right and left atrioventricular orifices. A total of eight parameters were analyzed, characterizing ventricular wall thickness, length and circumference of the inflow and outflow tracts, and circumference of the left orifice and aortic orifice. The data were compared with previously published patterns of normality, In addition, the volume of the aortic outflow tract was calculated. The inflow tract was shorter than the outflow tract, and the length of the diaphragmatic wall was equal to the sum of the lengths of the inflow tract and ventricular wall thickness at the level of the apex. C1 IGNACIO CHAVEZ NATL HEART INST,DEPT EMBRYOL,MEXICO CITY,DF,MEXICO. UNIV MALAGA HOSP,CARDIOL SECT,E-29640 MALAGA,SPAIN. UNIV GRANADA,SCH MED,DEPT PHARMACOL,E-18071 GRANADA,SPAIN. RP Alvarez, L, UNIV GRANADA,SCH MED,BASIC CARDIOVASC RES CTR,DEPT MORPHOL SCI,AVE MADRID S-N,E-18071 GRANADA,SPAIN. NR 21 TC 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0172-0643 J9 PEDIAT CARDIOL JI Pediatr. Cardiol. PD MAR-APR PY 1996 VL 17 IS 2 BP 97 EP 103 PG 7 SC Cardiac & Cardiovascular Systems; Pediatrics GA TZ193 UT ISI:A1996TZ19300006 ER PT J AU GonzalezArreola, C PantojaAlor, J Oloriz, F Villasenor, AB GarciaBarrera, P TI Lower Aptian ammonitina Pseudohaploceras liptoviense (Zeuschner) in the Cumburindio formation (southwestern Mexico) SO GEOBIOS LA English DT Article DE Ammonitina; lower Aptian; southwestern Mexico AB The presence of Pseudohaploceras liptoviense (ZEUSCHNER) associated to Palorbitolina lenticularis is (BLUMENBACH) permits to interpret an Early Aptian age for the middle part of the lower member of the Cumburindio Formation nearby Turitzio (Michoacan). It is proposed that Bose's species ''Desmoceras'' aguilerae, ''D.'' alzatei, ''D.'' burckhardti, ''D.'' durangense, ''D.'' tenuicostatum and ''D.'' wielandi are younger synonymous of Pseudohaploceras liptoviense (ZEUSCHNER). An alternative interpretation as Mexican colonizers very close to Pseudohaploceras liptoviense (ZEUSCHNER) cannot be conclusively disregarded. C1 UNIV NACL AUTONOMA MEXICO,DEPT GEOL REG,INST GEOL,MEXICO CITY 04510,DF,MEXICO. UNIV GRANADA,DEPT ESTRATIGRAFIA & PALEONTOL,E-18002 GRANADA,SPAIN. UNIV NACL AUTONOMA MEXICO,FAC CIENCIAS,MUSEO PALEONTOL,MEXICO CITY 04510,DF,MEXICO. RP GonzalezArreola, C, UNIV NACL AUTONOMA MEXICO,DEPT PALEONTOL,INST GEOL,CIUDAD UNIV,MEXICO CITY 04510,DF,MEXICO. NR 24 TC 1 PU UNIV CLAUDE BERNARD-LYONI PI VILLEURBANNE CEDEX PA CENTRE DES SCI DE LA TERRE 43 BLVD DU 11 NOVEMBRE, 69622 VILLEURBANNE CEDEX, FRANCE SN 0016-6995 J9 GEOBIOS-LYON JI Geobios PY 1996 VL 29 IS 1 BP 35 EP 43 PG 9 SC Paleontology GA UE150 UT ISI:A1996UE15000004 ER PT J AU Escandar, GM Peregrin, JMS Sierra, MG Martino, D Santoro, M Frutos, AA Garcia, SI Labadie, G Sala, LF TI Interaction of divalent metal ions with D-gluconic acid in the solid phase and aqueous solution SO POLYHEDRON LA English DT Article AB The interaction of D-gluconic acid with Mn-II, Co-II, Ni-II, Cu-II, Cd-II, Hg-II and Pb-II has been investigated. Compounds of the type Mn(D-gluconate)(2) . 3H(2)O, Co(D-gluconate)(2) . 3H(2)O, Ni(D-gluconate)(2) . 3H(2)O, Cu(D-gluconate)(2) . 3H(2)O, Cd(D-gluconate)(2), Hg(D-gluconate)OH and Pb(D-gluconate), have been isolated. These metal-sugar salts were characterized by elemental, thermogravimetric analyses and FT-IR, UV-vis absorption, EPR and C-13 NMR spectroscopies. In addition, a quantitative study of the equilibria involved in the interaction of this sugar and the above mentioned metal ions in an aqueous medium was carried out by means of potentiometric measurements of the hydrogen ion concentrations at 20 degrees C and mu = 0.100 M (NaNO3). On the basis of spectroscopic studies, possible structures of these complex species were discussed. C1 UNIV NACL ROSARIO,FAC CIENCIAS BIOQUIM & FARMACEUT,DEPT QUIM FIS,RA-2000 ROSARIO,ARGENTINA. UNIV NACL ROSARIO,FAC CIENCIAS BIOQUIM & FARMACEUT,DEPT QUIM ANALIT,RA-2000 ROSARIO,ARGENTINA. UNIV GRANADA,DEPT QUIM INORGAN,E-18071 GRANADA,SPAIN. UNIV NACL ROSARIO,FAC CIENCIAS BIOQUIM & FARMACEUT,IQUIOS,RA-2000 ROSARIO,ARGENTINA. INST DESARROLLO TECHNOL IND QUIM,RA-3000 SANTA FE,ARGENTINA. UNIV NACL LITORAL,FAC BIOQUIM & CIENCIAS BIOL,RA-3000 SANTA FE,ARGENTINA. NR 18 TC 20 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0277-5387 J9 POLYHEDRON JI Polyhedron PD JUL PY 1996 VL 15 IS 13 BP 2251 EP 2261 PG 11 SC Chemistry, Inorganic & Nuclear; Crystallography GA UG243 UT ISI:A1996UG24300020 ER PT J AU Ortega, R Tineo, A TI Resonance and non-resonance in a problem of boundedness SO PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY LA English DT Article AB This paper studies the existence of bounded solutions of a forced non-linear differential equation of arbitrary order. Necessary and sufficient conditions for the existence of such solutions are obtained. These results are inspired by classical results on the periodic problem, both in the resonant and non-resonant cases. C1 UNIV LOS ANDES,FAC CIENCIAS,DEPT MATEMAT,MERIDA 5101,VENEZUELA. RP Ortega, R, UNIV GRANADA,DEPT MATEMAT APLICADA,GRANADA 18071,SPAIN. NR 10 TC 8 PU AMER MATHEMATICAL SOC PI PROVIDENCE PA 201 CHARLES ST, PROVIDENCE, RI 02940-2213 SN 0002-9939 J9 PROC AMER MATH SOC JI Proc. Amer. Math. Soc. PD JUL PY 1996 VL 124 IS 7 BP 2089 EP 2096 PG 8 SC Mathematics, Applied; Mathematics GA UX878 UT ISI:A1996UX87800018 ER PT J AU Sarobe, J Miraballes, I Molina, JA Forcada, J HidalgoAlvarez, R TI Nephelometric assay of immunoglobulin G chemically bound to chloromethyl styrene beads SO POLYMERS FOR ADVANCED TECHNOLOGIES LA English DT Article DE enhanced-particle immunoassays; covalent coupling of IgG; functionalized polymer colloids; immunoreactivity; nephelometric latex assays ID REACTIVE LATEX; ANTIBODIES; PARTICLES; KINETICS AB Monodisperse core-shell stable latexes with reactive methylchloride surface functionalities were prepared at two different reaction temperatures. The reaction temperature played an important role in the amount of reactive functional groups. The covalent coupling had an efficiency of more than 50%. Antibodies covalently bound to functionalized polystyrene beads were used tb detect corresponding antigens by nephelometry. C1 UNIV PAIS VASCO,FAC CIENCIAS QUIM,DEPT QUIM APLICADA,GRP INGN QUIM,DONOSTIA SAN SEBAST 20080,SPAIN. UNIV REPUBLICA,INST HIGIENE,FAC QUIM,CATEDRA INMUNOL,MONTEVIDEO,URUGUAY. UNIV GRANADA,FAC CIENCIAS,DEPT FIS APLICADA,E-18071 GRANADA,SPAIN. NR 8 TC 18 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 1042-7147 J9 POLYM ADVAN TECHNOL JI Polym. Adv. Technol. PD SEP PY 1996 VL 7 IS 9 BP 749 EP 753 PG 5 SC Polymer Science GA VK906 UT ISI:A1996VK90600003 ER PT J AU Vicente, VE Moreira, O Camacho, JPM TI Sex-ratio distortion associated with the presence of a B chromosome in Astyanax scabripinnis (Teleostei, Characidae) SO CYTOGENETICS AND CELL GENETICS LA English DT Article ID NUCLEOLUS ORGANIZER REGIONS; GERM LINE POLYSOMY; SUPERNUMERARY CHROMOSOMES; ALLIUM-SCHOENOPRASUM; PISCES; FISH; GRASSHOPPER; CATFISH; SYSTEM AB Cytogenetic studies were conducted on 154 specimens of Astyanax scabripinnis collected at three localities in the Campos do Jordao region (State of Sao Paulo, Brazil). The C-banding pattern suggested that the metacentric B chromosome found in most of the specimens is an isochromosome derived from chromosome 24, the only chromosome in the standard complement that carries interstitial C-bands similar to those present in each arm of the B chromosome. The sex ratio was biased toward females in the Corrego das Pedras and Ribeirao do Casquilho streams and toward males in the Ribeirao das Perdizes stream. In all three populations analyzed, the B chromosome was more frequent in females than in males. In the most exhaustively sampled population (those from Corrego das Pedras), there was a highly significant association between B-chromosome frequency and sex-ratio distortion, with a disproportionately high number of males without B chromosomes and females with one B chromosome. C1 UNIV FED SAO CARLOS,DEPT GENET & EVOLUCAO,BR-13565905 SAO PAULO,BRAZIL. UNIV GRANADA,DEPT GENET,E-18071 GRANADA,SPAIN. NR 46 TC 31 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 0301-0171 J9 CYTOGENET CELL GENET JI Cytogenet. Cell Genet. PY 1996 VL 74 IS 1-2 BP 70 EP 75 PG 6 SC Cell Biology; Genetics & Heredity GA VN347 UT ISI:A1996VN34700003 ER PT J AU Sierra, JC LunaVillegas, G BuelaCasal, G FernandezGuardiola, A TI Residual effects (10 hours later) of a single oral dose of diazepam on vigilance SO MEDICAL SCIENCE RESEARCH LA English DT Article DE diazepam; reaction time; vigilance; tranquilliser ID PERFORMANCE; BENZODIAZEPINES; PSYCHOMOTOR AB There is a general agreement regarding the deleterious residual sequelae associated with benzodiazepine consumption. Most of these effects have been observed after repeated doses or a few hours after ingestion of the drugs. The goal of this experiment was to evaluate the sequelae of nocturnal ingestion of a single 10 mg dose of diazepam on attention 10 h after intake of the medication. 42 young, healthy subjects (21 females and 21 males) were divided for the application of three experimental conditions (control, placebo and diazepam) following a counterbalanced plan. Reaction time to both periodic and nonperiodic stimuli and lack of responses (failures) were quantified. Diazepam increased reaction time significantly, and produced a significant increase in the number of failures. C1 INST MEXICANO PSIQUIATRIA,LAB SUENO,MEXICO CITY,DF,MEXICO. RP Sierra, JC, UNIV GRANADA,FAC PSICOL,CAMPUS UNIV LA CARTUJA,E-18071 GRANADA,SPAIN. NR 22 TC 1 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0269-8951 J9 MED SCI RES JI Med. Sci. Res. PD JAN PY 1997 VL 25 IS 1 BP 41 EP 43 PG 3 SC Medicine, Research & Experimental GA WJ242 UT ISI:A1997WJ24200012 ER PT J AU SanchezSesma, FJ Luzon, F TI Can horizontal P waves be trapped and resonate in a shallow sedimentary basin? Reply SO GEOPHYSICAL JOURNAL INTERNATIONAL LA English DT Letter DE layered media; P waves; sedimentary basins ID RESPONSE MODELS; VALLEY; SURFACE; MEXICO; EARTHQUAKE; SV AB Using a complete mathematical formulation, we show that the trapping of horizontal P waves in a very soft shallow alluvial layer is a minor effect. These waves do not have a stable way of propagation since in order to exist they require an incident wave and are therefore incapable of resonating in the lateral direction when confined in a basin of limited extent. C1 CTR INVEST SISM AC,MEXICO CITY 14200,DF,MEXICO. UNIV ALMERIA,DEPT FIS APLICADA,ALMERIA 0471,SPAIN. UNIV GRANADA,INST ANDALUZ GEOFIS & PREVENC DESASTRES SISM,GRANADA 18080,SPAIN. RP SanchezSesma, FJ, NATL AUTONOMOUS UNIV MEXICO,INST INGN,CD UNIV,APDO 70-472,MEXICO CITY 04510,DF,MEXICO. NR 16 TC 0 PU BLACKWELL SCIENCE LTD PI OXFORD PA P O BOX 88, OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0NE SN 0956-540X J9 GEOPHYS J INT JI Geophys. J. Int. PD APR PY 1997 VL 129 IS 1 BP 215 EP 218 PG 4 SC Geochemistry & Geophysics GA WR938 UT ISI:A1997WR93800020 ER PT J AU Araus, JL Febrero, A Buxo, R Camalich, MD Martin, D Molina, F RodriguezAriza, MO Romagosa, I TI Changes in carbon isotope discrimination in grain cereals from different regions of the western Mediterranean Basin during the past seven millennia. Palaeoenvironmental evidence of a differential change in aridity during the late Holocene SO GLOBAL CHANGE BIOLOGY LA English DT Article DE archaeological plant remains; cereals; palaeoclimate; precipitation; stable carbon isotope discrimination; water use efficiency ID GLOBAL ENVIRONMENTAL-CHANGE; VAPOR-PRESSURE DEFICIT; WATER-USE EFFICIENCY; WHEAT CULTIVARS; GENETIC-IMPROVEMENT; ATMOSPHERIC CO2; WINTER-WHEAT; VEGETATION; RESPONSES; YIELD AB Carbon isotope discrimination (Delta) was determined for kernels of six-row barley and durum wheat cultivated in the western Mediterranean basin during the last seven millennia. Samples came from different archaeological sites in Catalonia (north-east Spain) and in the south-east of Spain (mainly eastern Andalusia). Samples from the present were also analysed. Mean values of Delta for barley and durum wheat grains decreased slightly from Neolithic (7000-5000 BP) to Chalcolithic-Bronze (5000-3000 BP) and Iron ages (3000-2200 BP) both in Catalonia and in south-east (SE) Spain. Values were consistently lower in SE Spain than in Catalonia throughout these five millennia, which suggests that Catalonia was less arid than SE Spain in this period. Within a given region, current discrimination values for kernels of the same cereal species cultivated under rainfed conditions were lower than those of archaeological grains, which implies more arid conditions at present. Furthermore, an empirical relationship between Delta of mature kernels and total precipitation (plus irrigation where applicable) during grain filling (r(2) = 0.73, N = 25) was established for barley, currently cultivated at different locations in the western Mediterranean basin in Spain. The resulting relationship was applied to the Delta data for barley kernels from 10 archaeological sites in Catalonia and 10 sites in SE Spain, to estimate the precipitation during grain filling at the time the kernels were produced. For both regions, current climatic conditions are consistently more arid than those inferred for the Neolithic, Bronze and Iron ages. In addition, although Catalonia was estimated to have had consistently wetter conditions (about 20% more precipitation) than SE Spain throughout these millennia, differences in precipitation between these two regions have recently increased, with 79% more precipitation in Catalonia. Results indicate a more rapid increase in aridity in SE Spain than in Catalonia, probably produced during the last few centuries, and due to anthropogenic causes. C1 UNIV LA LAGUNA,DEPT PREHIST ANTROPOL & HIST ANTIGUA,E-38207 LA LAGUNA,SPAIN. GENERALITAT CATALUNYA,CTR INVEST ARQUEOL,GIRONA,SPAIN. UNIV GRANADA,DEPT PREHIST & ARQUEOL,GRANADA,SPAIN. IRTA,UDL,CTR R&D,AREA CONREUS EXTENSIUS,LLEIDA,SPAIN. RP Araus, JL, UNIV BARCELONA,FAC BIOL,UNITAT FISIOL VEGETAL,AVDA DIAGONAL 645,E-08028 BARCELONA,SPAIN. NR 61 TC 26 PU BLACKWELL SCIENCE LTD PI OXFORD PA P O BOX 88, OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0NE SN 1354-1013 J9 GLOB CHANGE BIOL JI Glob. Change Biol. PD APR PY 1997 VL 3 IS 2 BP 107 EP 118 PG 12 SC Biodiversity Conservation; Ecology; Environmental Sciences GA WU786 UT ISI:A1997WU78600003 ER PT J AU Jimenez, I Gotteland, M Zarzuelo, A Uauy, R Speisky, H TI Loss of the metal binding properties of metallothionein induced by hydrogen peroxide and free radicals SO TOXICOLOGY LA English DT Article DE metallothionein; thiol oxidation; metal-binding; free radicals; hydrogen peroxide ID LIPID-PEROXIDATION; OXIDATIVE STRESS; ZINC; CELLS; COPPER; RADIORESISTANCE; HEPATOTOXICITY; DEGRADATION; INHIBITION; PROTECTION AB The relationship between the metal-binding properties of metallothionein (MT) and its ability to interact with peroxides and free radicals was explored in vitro. The binding of Cd-109 to MT and the thiol density of the protein were determined after incubation of a purified Zn/Cd-metallothionein preparation with either hydrogen peroxide alone, or with a number of free radical generating systems. Exposure of MT to H2O2, whether in the presence or absence of Fe2+, resulted in the progressive loss of the thiol residues of the protein and led to a parallel decrease of its Cd-109-binding capacity. These changes correlated with r values of 0.999 (P = 0.001) and 0.998 (P = 0.001), in the absence and presence of iron, respectively. The effects of H2O2, alone or plus Fe2+, on MT were completely prevented by catalase, but totally unaffected by superoxide dismutase or desferrioxamine. Exposure of MT to xanthine/xanthine oxidase also led to thiol oxidation and to a concomitant loss of the Cd-binding properties. In this system, both changes correlated with an r of 0.993 (P = 0.001) and were completely inhibited by superoxide dismutase. Exposure of MT to the peroxyl radical generator, 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH), resulted in the progressive loss of its the metal-binding properties and its thiol residues, both changes correlating with an r of 0.986 (P = 0.002). The ability of MT to bind Cd-109, lost as a result of its prior exposure to either H2O2 alone; H2O2 plus Fe2+, xanthine/xanthine oxidase, or to AAPH was, in all cases, completely recovered after incubation of the modified protein with dithiothreitol. These results indicate that H2O2 alone, and/or the oxygen-derived species, superoxide anion and peroxyl radicals, can all directly interact in vitro with MT to modify the protein oxidatively, and suggest that, under in vivo conditions, these species may be implicated as modifying factors of the metal-binding capacity of metallothionein. (C) 1997 Elsevier Science Ireland Ltd. C1 UNIV CHILE,INST NUTR & TECNOL ALIMENTOS,UNIDAD BIOQUIM FARMACOL,SANTIAGO 11,CHILE. UNIV CHILE,INST NUTR & TECNOL ALIMENTOS,UNIDAD GASTROENTEROL,SANTIAGO 11,CHILE. UNIV GRANADA,FAC FARM,DEPT FARMACOL,GRANADA,SPAIN. NR 28 TC 32 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0300-483X J9 TOXICOLOGY JI Toxicology PD JUN 6 PY 1997 VL 120 IS 1 BP 37 EP 46 PG 10 SC Pharmacology & Pharmacy; Toxicology GA WZ497 UT ISI:A1997WZ49700005 ER PT J AU Moreno, A Bermejo, R Talavera, E AlvarezPez, JM SanzAparicio, J RomeroGarrido, A TI Purification, crystallization and preliminary X-ray diffraction studies of C-phycocyanin and allophycocyanin from Spirulina platensis SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY LA English DT Article ID CRYSTAL-STRUCTURE ANALYSIS; GEL ACUPUNCTURE METHOD; SINGLE-CRYSTALS; ENERGY-TRANSFER; RED ALGA; REFINEMENT; RESOLUTION; PHYCOBILIPROTEINS; EXCITATION; ANTENNA AB C-phycocyanin and allophycocyanin from the green alga Spirulina platensis were isolated and crystallized by gel-acupuncture techniques. A novel two-step chromatographic procedure was used for purification. Blue hexagonal crystals were obtained by diffusing magnesium chloride into the protein solution for a week, followed by diffusion of PEG 6000 in order to complete the reduction of the solubility of the protein in the capillary tube used as a growth cell. In the case of allophycocyanin, crystals with a size of 0.4 x 0.3 x 0.3 mm were characterized by X-ray diffraction. They belong to space group P6(3)22 pith unit-cell parameters a = b = 102.04, c = 131.22 Angstrom. The crystals of C-phycocyanin belong to either space group P6 or P6(3) with unit-cell constants a=b=182.38, c=60.87 Angstrom, alpha=beta=90, gamma=120 degrees. The crystals diffract beyond 2.4 and 2.5 Angstrom resolution, respectively, using a rotating anode as an X-ray source. C1 UNIV GRANADA,DEPT QUIM FIS,E-18071 GRANADA,SPAIN. CSIC,INST QUIM FIS ROCASOLANO,E-28006 MADRID,SPAIN. RP Moreno, A, NATL AUTONOMOUS UNIV MEXICO,INST QUIM,CIRCUITO EXTERIOR,MEXICO CITY 04510,DF,MEXICO. NR 34 TC 7 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0907-4449 J9 ACTA CRYSTALLOGR D-BIOL CRYST JI Acta Crystallogr. Sect. D-Biol. Crystallogr. PD MAY 1 PY 1997 VL 53 PN Part 3 BP 321 EP 326 PG 6 SC Biochemical Research Methods; Biochemistry & Molecular Biology; Biophysics; Crystallography GA XB256 UT ISI:A1997XB25600012 ER PT J AU Luzon, F SanchezSesma, FJ RodriguezZuniga, JL Posadas, AM Garcia, JM Martin, J Romacho, MD Navarro, M TI Diffraction of P, S and Rayleigh waves by three-dimensional topographies SO GEOPHYSICAL JOURNAL INTERNATIONAL LA English DT Article DE diffraction; numerical techniques; synthetic seismograms; topography; wave propagation ID BOUNDARY-ELEMENT METHOD; SEISMIC RESPONSE; ALLUVIAL VALLEYS; GROUND MOTION; ELASTIC-WAVES; INCIDENT-P; SIMULATION AB The diffraction of P, S and Rayleigh waves by 3-D topographies in an elastic halfspace is studied using a simplified indirect boundary element method (IBEM). This technique is based on the integral representation of the diffracted elastic fields in terms of single-layer boundary sources. It can be seen as a numerical realization of Huygens' principle because diffracted waves are constructed at the boundaries from where they are radiated by means of boundary sources. A Fredholm integral equation of the second kind for such sources is obtained from the stress-free boundary conditions. A simplified discretization scheme for the numerical and analytical integration of the exact Green's functions, which employs circles of various sizes to cover most of the boundary surface, is used. The incidence of elastic waves on 3-D topographical profiles is studied, We analyse the displacement amplitudes in the frequency, space and time domains. The results show that the vertical walls of a cylindrical cavity are strong diffractors producing emission of energy in all directions. In the case of a mountain and incident P, SV and SH waves the results show a great variability of the surface ground motion, These spatial variations are due to the interference between locally generated diffracted waves. A polarization analysis of the surface displacement at different locations shows that the diffracted waves are mostly surface and creeping waves. C1 UNIV GRANADA,INST ANDALUZ GEOFIS & PREVENC DESASTRES SISM,GRANADA 18080,SPAIN. NATL AUTONOMOUS UNIV MEXICO,INST INGN,MEXICO CITY 04510,DF,MEXICO. CTR INVEST SISM,MEXICO CITY 14200,DF,MEXICO. RP Luzon, F, UNIV ALMERIA,DEPT FIS APLICADA,CANADA SAN URBANO S-N,ALMERIA 04120,SPAIN. NR 21 TC 15 PU BLACKWELL SCIENCE LTD PI OXFORD PA P O BOX 88, OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0NE SN 0956-540X J9 GEOPHYS J INT JI Geophys. J. Int. PD JUN PY 1997 VL 129 IS 3 BP 571 EP 578 PG 8 SC Geochemistry & Geophysics GA XC862 UT ISI:A1997XC86200007 ER PT J AU Frutos, AA Escandar, GM Peregrin, JMS Sierra, MG Sala, LF TI Complex formation between D-lactobionate and bivalent metal ions. Studies in solution and in the solid state SO CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE LA English DT Article DE D-lactobionate; metal complexes; equilibrium constants; potentiometry; solid state studies ID D-ALDURONIC ACIDS; AQUEOUS-SOLUTION; COPPER(II) COMPLEXES; EQUILIBRIUM; PROTON AB The equilibrium reactions between deprotonated D-lactobionic acid (4-O-beta-D-galactopyranosyl-D-gluconic acid) and cobalt(II), nickel(II), copper(II), zinc(II), cadmium(II), and mercury(II) have been studied by potentiometric and spectrophotometric methods in aqueous solution. All measurements have been carried out at a temperature of 20.0 +/- 0.1 degrees C and at an ionic strength of 0.100 M (NaNO3) with the corresponding stability constants calculated by applying computational methods. The interactions between the proposed cations with deprotonated D-lactobionic acid were compared with those corresponding to D-gluconic acid. Compounds of type: Co(C12H21O12)(2) . 2H(2)O . C2H5OH, Ni(C12H21O12)(2) . 2H(2)O . C2H5OH, Cu(C12H21O12)(2) . 2H(2)O . C2H5OH, Zn(C12H21O12)(2) . 2H(2)O . C2H5OH, and Cd(C12H21O12)(2) . 2H(2)O . 0.5C(2)H(5)OH have been isolated. These metal-sugar salts were characterized by elemental, thermogravimetric, and susceptibility analyses and FT-IR, UV-visible absorption, diffuse reflectance, and C-13 NMR spectroscopies. C1 UNIV NACL ROSARIO,FAC CIENCIAS BIOQUIM & FARMACEUT,DEPT QUIM FIS,RA-2000 ROSARIO,ARGENTINA. UNIV NACL ROSARIO,FAC CIENCIAS BIOQUIM & FARMACEUT,DEPT QUIM ANALIT,RA-2000 ROSARIO,ARGENTINA. UNIV NACL ROSARIO,FAC CIENCIAS BIOQUIM & FARMACEUT,DEPT QUIM ORGAN,RA-2000 ROSARIO,ARGENTINA. UNIV GRANADA,FAC CIENCIAS,DEPT QUIM INORGAN,E-18071 GRANADA,SPAIN. NR 22 TC 11 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0008-4042 J9 CAN J CHEM JI Can. J. Chem.-Rev. Can. Chim. PD APR PY 1997 VL 75 IS 4 BP 405 EP 413 PG 9 SC Chemistry, Multidisciplinary GA XD814 UT ISI:A1997XD81400006 ER PT J AU Payares, P Diaz, D Olivero, J Vivas, R Gomez, I TI Prediction of the gas chromatographic relative retention times of flavonoids from molecular structure SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article DE retention times; retention prediction; quantitative structure-retention relationships; molecular descriptors; flavonoids ID DESCRIPTORS; AGLYCONES; INDEXES; QSAR AB Quantitative structure-retention relationships have been formulated for the gas chromatographic behaviour of 49 flavonoids in an apolar column, including flavones, flavonols, flavanones and a chalcone. Topological, geometric and electronic descriptors were obtained for model generation. Relationships between descriptors and the inverse form of the relative retention times of flavonoids relative to hispidulin were established using linear multiple regression. The best descriptors included in the model were 1/((3) chi(c) - (3) chi(c)(v)), and the sum of the values of the charges for the hydroxyl hydrogens. The predictive model had a correlation coefficient of 0.975 and a standard error of estimation of 0.120. C1 UNIV CARTAGENA,DEPT CHEM,CARTAGENA,COLOMBIA. UNIV GRANADA,DEPT CHEM,GRANADA,SPAIN. RP Payares, P, UNIV CARTAGENA,THEORET CHEM GRP,AA 6541,CARTAGENA,COLOMBIA. NR 28 TC 25 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR A JI J. Chromatogr. A PD MAY 30 PY 1997 VL 771 IS 1-2 BP 213 EP 219 PG 7 SC Biochemical Research Methods; Chemistry, Analytical GA XF413 UT ISI:A1997XF41300024 ER PT J AU MartinezFinkelshtein, A MorenoBalcazar, JJ PijeiraCabrera, H TI Strong asymptotics for Gegenbauer-Sobolev orthogonal polynomials SO JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS LA English DT Article DE Sobolev orthogonal polynomials; asymptotics ID RELATIVE ASYMPTOTICS; INNER-PRODUCT; RESPECT AB We study the asymptotic behaviour of the monic orthogonal polynomials with respect to the Gegenbauer-Sobolev inner product (f,g)s = [f,g] + lambda[f',g'] where [f,g] = integral(-1)(1) f(x)g(x)(1-x(2))(alpha-1/2) dx With alpha> -1/2 and lambda>0. The asymptotics of the zeros and norms of these polynomials are also established. C1 UNIV ALMERIA,DEPT ESTADIST & MATEMAT APLICADA,ALMERIA 04120,SPAIN. UNIV GRANADA,INST CARLOS I FIS TEOR & COMPUTAC,E-18071 GRANADA,SPAIN. UNIV MATANZAS,DEPT MATEMAT,MATANZAS,CUBA. NR 9 TC 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0427 J9 J COMPUT APPL MATH JI J. Comput. Appl. Math. PD JUL 8 PY 1997 VL 81 IS 2 BP 211 EP 216 PG 6 SC Mathematics, Applied GA XL783 UT ISI:A1997XL78300003 ER PT J AU Campos, J Ortega, R Tineo, A TI Homeomorphisms of the disk with trivial dynamics and extinction of competitive systems SO JOURNAL OF DIFFERENTIAL EQUATIONS LA English DT Article C1 UNIV LOS ANDES,FAC CIENCIAS,DEPT MATEMAT,MERIDA 5101,VENEZUELA. RP Campos, J, UNIV GRANADA,DEPT MATEMAT APLICADA,E-18071 GRANADA,SPAIN. NR 7 TC 6 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0022-0396 J9 J DIFFERENTIAL EQUATIONS JI J. Differ. Equ. PD JUL 20 PY 1997 VL 138 IS 1 BP 157 EP 170 PG 14 SC Mathematics GA XM542 UT ISI:A1997XM54200006 ER PT J AU MesaValle, CM Moraleda, V Lazuen, J Craciunescu, D Osuna, A TI Action of new organometallic complexes against Leishmania donovani SO JOURNAL OF ANTIMICROBIAL CHEMOTHERAPY LA English DT Article ID CHEMOTHERAPEUTIC-AGENTS; TRYPANOSOMA-CRUZI; INVITRO; CULTURE; CELLS; FORMS AB The action of 16 newly synthesized metal complexes having the general structure cis-Pt-(II)-X-n-L-n have been tested in vitro against the promastigote forms of Leishmania donovani. The metal complexes at 24 h and maximum dosages inhibited growth from 0%, e.g. in cis-Pt-nifurtimox, to 100%, e.g. in cis-Pt-(2,3,4,5,6-pentafluoroaniline)(2)Br-2 or cis-Pt-pentamidine-I-2. A study of the cytotoxicity of these latter complexes on the phagocytic cell line J-774 showed neither high cytotoxicity nor cytolysis. At the maximum dosage after 24 h of permanent contact with the cells (extreme, non-physiological conditions), cytolysis did not exceed 30%. For most of the compounds, cytolysis ranged from 0%, for cis-Pt-oxamniquine-Cl-2 to 27.7%, for cis-Pt-pentamidine-I-2. The compound cis-Pt-(2,3,4,5,6-pentafluoroaniline)(2)-Br-2 caused up to 1.4% cytolysis under the above conditions. Parasites exposed to cis-Pt-pentamidine-I-2 showed notably reduced DNA, RNA and protein synthesis, unlike those exposed to other compounds. Parasites examined by electron microscopy showed effects mainly on the nucleus, though in some cases the mitochondria were affected, altering the internal membranes of the cytoplasmic organelles. The in-vivo activity of the complex cis-Pt-guanethidine-Cl-2 was evaluated in parasitized Wistar rats, in which the number of amastigotes per gram of spleen was reduced by 75% compared with controls. C1 UNIV GRANADA,INST BIOTECHNOL,BIOCHEM & MOL PARASITOL UNIT,GRANADA,SPAIN. UNIV CARACAS,DEPT ANALYT CHEM,CARACAS,VENEZUELA. RP MesaValle, CM, UNIV ALMERIA,FAC CIENCIAS EXPT,DEPT BIOL APLICADA,AREA PARASITOL,ALMERIA,SPAIN. NR 43 TC 4 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD, ENGLAND OX2 6DP SN 0305-7453 J9 J ANTIMICROB CHEMOTHER JI J. Antimicrob. Chemother. PD JUL PY 1997 VL 40 IS 1 BP 47 EP 57 PG 11 SC Infectious Diseases; Microbiology; Pharmacology & Pharmacy GA XN567 UT ISI:A1997XN56700008 ER PT J AU LopezBeltran, A Calanas, AS Jimena, P Escudero, AL Campello, TR MunozTorres, M EscobarJimenez, F Carvia, RE Nogales, FE TI Virilizing mature ovarian cystic teratomas SO VIRCHOWS ARCHIV-AN INTERNATIONAL JOURNAL OF PATHOLOGY LA English DT Article DE ovary; androgen secretion; cystic teratoma; virilization; luteinization ID ANDROGEN; HYPERANDROGENISM; ORIGIN; TUMORS AB Three further cases of mature benign cystic teratomas of the ovary associated with virilization are added to the three previously reported in the literature. They were found in postmenopausal, obese, diabetic women aged 52, 61, and 67 years. The patients presented with hirsutism and voice changes and clitoromegaly was present in one. Testosterone and androstenedione levels were elevated but promptly regressed after removal of the tumours. Histologically, sheets of stromal luteinized cells were found peripherally at the interface between the neoplasm and ovarian tissue. Luteinization of ovarian stroma induced by an unknown factor related to diabetes mellitus is the origin of the virilization. C1 UNIV CORDOBA,SCH MED,DEPT PATHOL,CORDOBA,ARGENTINA. REINA SOFIA UNIV HOSP,CORDOBA,ARGENTINA. UNIV CORDOBA,SCH MED,DEPT INTERNAL MED ENDOCRINOL,CORDOBA,ARGENTINA. UNIV CORDOBA,SCH MED,DEPT GYNAECOL,CORDOBA,ARGENTINA. UNIV GRANADA,SCH MED,DEPT PATHOL,GRANADA,SPAIN. UNIV GRANADA,SCH MED,DEPT ENDOCRINOL,GRANADA,SPAIN. UNIV FED PERNAMBUCO,RECIFE,PE,BRAZIL. NR 14 TC 3 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0945-6317 J9 VIRCHOWS ARCHIV JI Virchows Arch. Int. J. Pathol. PD AUG PY 1997 VL 431 IS 2 BP 149 EP 151 PG 3 SC Pathology GA XR436 UT ISI:A1997XR43600010 ER EF