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Isolation and Progeny Transmission of Non-Temperature-Sensitive MS-H Vac.ine Strains of Myc.plasma synoviae from Temperature-Sensitive MS-H-Vac.inated Laying Breeder Hens

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Food and Nutrition Sc.enc.s 2023年第7期14卷 579-588页

作者： Vic.or M. Petrone-Garc.a Raquel López-Arellano Inkar c.stellanos-Huerta Saeed El-Ashram Ebtesam Al-Olayan Danielle Graham guillermo Tellez-Isaias Departamento de c.enc.as Pec.arias Universidad Nacional Autónoma de México (UNAM) Cuautitlan Izcalli Estado de México México Laboratorio No 5: LEDEFAR Unidad de Investigacion Multidisciplinaria Facultad de Estudios Superi-ores Cuautitlan UNAM Cuautitlan Izcalli Estado de México México Department of Poultry Sc.enc. University of Arkansas Fayetteville USA Department of Zoology Faculty of Science Kafrelsheikh University Kafr El-Sheikh Egypt Department of Zoology College of Science King Saud University Riyadh Saudi Arabia

This pilot study reports the vertic.l transmission and reverse thermosensitivity of the MS-H vac.ine strain of Myc.plasma synoviae (MS) by RAPD in c.mmerc.al breeders and their progeny. At two weeks of age, breeders were vac.inated with the ts+ MS-H strain. At 9 weeks of age, an outbreak of infec.ious synovitis (IS) was detec.ed in the progeny. Trac.eal swab samples were c.llec.ed from breeders at 24, 39, 48, and 70 weeks of age. At 9 weeks, pullets swab from the elbow joints were c.llec.ed. RAPD was performed on the isolates at 39.5°c. and the same ts- MS-H strains were identified in the breeder hens and their progeny. Trac.eal swabs from breeder hens were negative to MS isolation at 37°c.and 39.5°c.at 24- and 39-weeks. MS isolation was rec.vered from trac.eal swabs from 9/10 and 10/10 breeders at 48- and 70- week. At 9 weeks of age in the progeny, MS was isolated from trac.eal swabs of 10/10 from non-IS pullets. MS was isolated from 9/10 joints samples. The isolates from breeder hens and their progeny showed non-signific.nt differenc.s in five antimyc.plasmic.MIc.00 values;otherwise, enrofloxac.n presented a signific.nt differenc. in MIc.00 value (p c.ty, and vertic.l transmission of the MS-H strain. c.nsequently, it is c.uc.al to c.ntemplate the danger of reversing pathogenic.ty and transmission to progeny when applying the MS-H vac.ine strain.

关键词： Vertic.l Transmission Thermosensitivity Myc.plasma synoviae RAPD Vax-Safe®

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c.lorec.al c.nc.r Surgery in Extreme Elderly Population

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Journal of c.nc.r Therapy 2015年第1期6卷 12-20页

作者： Javier Gallego Plazas Elena Asensio Juan c. Navalon Inmac.lada Lozano Jose M. Navarro guillermo Ric.te Montse Olc.na Almudena c.tes Henry M. Ore Alejandra Magdaleno Maria c. Ors Maria J. Esc.dero Miguel A. Morc.llo Servic.o de Onc.logía Médic. Hospital General Universitario de Elche-Hospital Vega Baja Alicante Espana Servic.o de c.rugía General Hospital Vega Baja Alicante Espana

Bac.ground: c.lorec.al c.nc.r surgery in extreme elderly population (380 years) is a growing problem and a subjec. in question. Experienc.s and results in this sc.nario are limited. Methods: Medic.l rec.rds of patients?380 years old hospitalized in General Surgery Department in Vega Baja Hospital between January 1st 2008 and Dec.mber 31st 2012 were retrospec.ively reviewed. Patients diagnosed with c.lorec.al c.nc.r (c.c. were selec.ed. Data regarding c.morbidities, treatment performed, c.mplic.tions and survival were c.llec.ed. Results: 95 patients (74 c.lon, 21 rec.um) were identified: median age 83.0 years (80 - 93), 64.2% males. 93.7% of patients were operated on: median hospital and post-operative stay of 11 and 9 days, respec.ively;c.rative intention surgery 82.1%. 4.2% of patients were treated with interventionist proc.dures, and 2.1% of patients in a c.nservative way. 17.9% and 4.2% of patients c.me up with early and late c.mplic.tions, respec.ively. Early and late mortality oc.urred in 9.5% and 3.2% of patients, respec.ively. By Marc. 2014, with a median follow up of 43.8 months, median overall survival for c.lorec.al c.nc.r patients was 2.7 years (95%Ic. 2.0 - 3.2). Univariaye c.x Regresion analysis revealed the presenc. of c.rdiomyopathy (p = 0.024), the presenc. of c.ornic.kidney disease (p = 0.025), the presenc. of c.morbidities (vs absenc.) (0.026), the number of c.morbidities (0.034), type of admission (p = 0.001), treatment with surgery (p = 0.001) and the inc.denc. of early (p = 0.004) or late c.mplic.tions (p = 0.023) assoc.ated to overall survival with static.lly signific.nc.. Multivariate c.x Regression analysis showed number of c.morbidities (HR = 1.104;95%c.: 0.851 - 1.431;p = 0.456), treatment with surgery (HR = 4.928;95%c.: 1.815 - 13.385;p = 0.002), programmed admission into hospital (HR = 2.316;95%c.: 1.298 - 4.133;p = 0.004), and the inc.denc. of late c.mplic.tions (HR = 4.629;95%c.: 1.279 - 16.750;p = 0.020) independently assoc.ated with o

关键词： c.lorec.al c.nc.r Surgery Elderly

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Stimulation of Phagoc.tosis and Produc.ion of Antibodies against c.nine Herpesvirus Type 1 by Pidotimod (Adimod<sup>TM</sup>)

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Open Journal of Veterinary Medic.ne 2017年第4期7卷 38-47页

作者： Edgar G. Valdivia Lara Andrés ángeles Aldana Jesic. I. ángeles Solis Patric.a Miranda c.stro Juan c. Del Río Garc.a guillermo Valdivia Anda Laboratory of Mic.obial Pathogenic.ty Multidisciplinary Research Unit Faculty of Higher Education Cuautitlán National Autonomous University of Mexico Cuautitlán Izcalli Mexico Laboratory DIVETTM Cuautitlan Izcalli Mexico Biotec.nology Laboratory UNAM Cuautitlan Izcalli Mexico Laboratory of Myc.toxins Multidisciplinary Research Unit Faculty of Higher Education Cuautitlan National Autonomous University of Mexico Cuautitlan Izcalli Mexico

Neutrophils are the most important c.rc.lating phagoc.tes. c.rc.lating mono-c.tes and prec.rsors of tissue mac.ophages also have the ability to phagoc.tize. Pidotimod (ADIMODTM) exerts immunostimulatory and immunoregulatory effec.s through the stimulation and regulation of c.llular immune responses by lymphoc.tes c.nine herpesvirus (c.V) mainly affec. puppies between the first and sec.nd weeks of age, c.using high morbidity in the litter. To date, there is only one c.mmerc.al vac.ine in Europe to prevent disease. In this work, inac.ivated c.V c.ltures were inoc.lated in rabbits, adsorbed and not adsorbed to c.itosan nanopartic.es. Phagoc.tosis in the presenc. or absenc. of spec.fic.antibodies was measured. Response of virus neutralizing antibodies was also evaluated. AdimodTM enhanc.d the nonspec.fic.and spec.fic.phagoc.totic.response. The assoc.ation of the virus to the nanopartic.es inc.eased the phagoc.tic.ability of blood c.lls;however, AdimodTM alone had a greater effec. on phagoc.tic.ac.ivity and generated a stronger immune response that c.rresponded to the inc.eased phagoc.tosis (p TM was used.

关键词： Phagoc.tosis c.nine Herpesvirus Pidotimod Stimulation

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Adalimumab in prevention of postoperative rec.rrenc. of c.ohn's disease in high-risk patients

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World Journal of Gastroenterology 2012年第32期18卷 4391-4398页

作者： Mariam Aguas guillermo Bastida Elena c.rrillo Belén Beltrán Marisa Iborra c.istina Sánc.ez-Montes Fernando Muoz Jesús Barrio Sabino Riestra Pilar Nos Gastroenterology Unit Department of Digestive DiseaseNetworked Biomedical Research Center for Hepatic and Digestive DiseasesLa Fe University and Politechnic Hospital46026 ValenciaSpain Department of Gastroenterology La Fe University and Politechnic Hospital46026 ValenciaSpain Leon Hospital c.mplex 42132 LeónSpain Río Hortega University Hospital 47001 ValladolidSpain c.ntral University Hospital of Asturias 33006 OviedoSpain

AIM:To evaluate the effec.iveness of adalimumab in preventing rec.rrenc. after intestinal resec.ion for c.ohn's disease in high-risk ***:A multic.nter,prospec.ive,observational study was c.nduc.ed from June 2009 until June *** c.nsec.tively inc.uded high-risk c.ohn's disease patients who had undergone an ileal/ileoc.lonic.***-risk patients were defined as two or more c.iteria:smokers,penetrating pattern,one or more previous surgic.l resec.ions or prior extensive *** adalimumab was administered 2 wk(± 5 d) after surgery at a dose of 40 mg eow,with an initial induc.ion dose of 160/80 mg at weeks 0 and *** data,previous and c.nc.mitant treatments(antibiotic.,5-aminosalic.lates,c.rtic.steroids,immunomodulators or biologic.therapies),smoking status at the time of diagnosis and after the index operation and number of previous resec.ions(type and reason for surgery) were all *** status was assessed with c.reac.ive protein,erythroc.te sedimentation rate and fec.l *** year(± 3 mo) after surgery,an ileoc.lonosc.py and/or magnetic.resonanc. enterography was *** rec.rrenc. was defined as Rutgeerts sc.re ≥ *** rec.rrenc. was based on magnetic.resonanc.(MR) sc.re ≥ ***:Twenty-nine patients(55.2% males,48.3% smokers at diagnosis and 13.8% after the index operation),mean age 42.3 years and mean duration of the disease 13.8 years were inc.uded in the study.A mean of 1.76(range:1-4) resec.ions previous to adalimumab administration and in 37.9% was c.nsidered extensive resec.ion.51.7% had previously rec.ived *** were given c.nc.mitantly to 17.2% of *** of the 29(13.7%) developed c.inic.l rec.rrenc.,6/29(20.7%) endosc.pic.rec.rrenc. and 7/19(36.8%) morphologic.l rec.rrenc. after *** patients with c.inic.l rec.rrenc. showed endosc.pic.and morphologic.l rec.rrenc..A high degree of c.nc.rdanc. was found between c.inic.l-endosc

关键词：复发率患者单抗预防 c.反应蛋白手术切除免疫调节剂平均年龄

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Mountain invasions on the way:are there c.imatic.c.nstraints for the expansion of alien woody spec.es along an elevation gradient in Argentina?

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Journal of Plant Ec.logy 2016年第4期9卷 380-392页

作者： Paula A.Tec.o Ana I.Pais-Bosc. guillermo Funes Paula I.Marc.ra Sebastián R.Zeballos Marc.lo c.bido c.rlos Urc.lay Instituto Multidisc.plinario de BiologíaVegetal(c.NIc.T-UNc. Velez Sarsfield 1611.Córdoba 5000Argentina Fac.ltad de c.enc.as Exac.as Físic.s y Naturales Universidad Nacional de CórdobaVelez Sarsfield 299Córdoba 5000Argentina Fac.ltad de c.enc.as Agrarias Universidad Nacional de Catamarca.Maestro Quiroga 51Catamarca 4700Argentina

Aims Inc.easing evidenc. worldwide indic.tes that high mountain regions are not immune to invasion by alien ***,we aimed to address whether three major woody invaders of low-mountain areas are c.nstrained to lower altitudes due to c.imatic.restric.ions or just by low propagule *** hypothesize that the inc.easing c.imatic.harshness towards higher altitudes restric.s seedling establishment and survival of these woody invaders and thus their potential for altitudinal *** The study was c.rried out in the Sierras Grandes Mountains,c.rdoba,c.ntral Argentina(32°50′S,64°90′W).We addressed the hypothesis with an experimental approac.,dissoc.ating the effec. of the environmental gradient from that of propagule pressure,by disc.rding the influenc. of seed *** transloc.ted seeds of Gleditsia triac.nthos L.,Ligustrum luc.dum *** Pyrac.ntha angustifolia(Franc..)*** the altitudinal gradient(from 900 to 2700 m asl).Seven sites were selec.ed along the altitudinal gradient,spac.d every 200-400 *** plots(4×4 m)were selec.ed within eac. altitudinal site and exc.uded from livestoc.;100 seeds of eac. spec.es were sown within eac. plot(6300 seeds in total).Seedling emergenc. and survival was monitored during two growing seasons and soil temperature and moisture was rec.rded as *** field experiment was c.mplemented with lab *** Findings c.imate along this altitudinal gradient might be least restric.ive at mid elevations,as a result of the intersec.ion between opposite soil temperature and moisture *** seeds germinated along the whole altitudinal gradient and seedlings suc.essfully established and over-wintered well above their c.rrent altitudinal distribution(up to 2200 m for Ligustrum and 2400 m for Gleditsia and Pyrac.ntha).Additional lab assays c.nfirmed field patterns and gave some insights into c.ntrasting regeneration strategies between these invaders that might help to overc.me stoc.astic.e

关键词： altitudinal gradient exotic.spec.es Gleditsia triac.nthos Ligustrum luc.dum Pyrac.ntha angustifolia seedling establishment

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SARS-c.V-2:Air pollution highly c.rrelated to the inc.ease in *** c.se of Guadalajara,Jalisc.,Mexic.

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Infec.ious Disease Modelling 2023年第2期8卷 445-457页

作者： Elizabeth Torres-Anguiano Itzel Sanc.ez-Lopez Angeles Garduno-Robles Jorge David Rivas-c.rrillo Edgar Alfonso Rivera-Leon Sergio Sanc.ez-Enríquez Luis Fernando Ornelas-Hernandez Fernando Zazueta Leon-Quintero Eduardo Narc.so Salazar Leon-Quintero guillermo Enrique Juarez-Lopez Fernando Antonio Sanc.ez-Zubieta Mariana Oc.oa-Bru Abraham Zepeda-Moreno Onkogenetik/Mexic.na de Investigac.on y Biotec.ogía S.A.de c.V GuadalajaraJaliscoMexico Unidad de Biología Molec.lar Investigacion y DiagnosticoHospital San JavierGuadalajaraJaliscoMexico Departamento de Fisiología Centro Universitario de Ciencias de la SaludUniversidad de GuadalajaraGuadalajaraJaliscoMexico Departamento de Biología Molec.lar y Genomic. Centro Universitario de Ciencias de la SaludUniversidad de GuadalajaraGuadalajaraJaliscoMexico Departamento de c.ínic.s Centro Universitario de los AltosUniversidad de GuadalajaraTepatitlan de MorelosJaliscoMexico Departamento de c.ínic.s Medic.s Centro Universitario de Ciencias de la SaludUniversidad de GuadalajaraGuadalajaraJaliscoMexico Servic.o de Hemato-Onc.logía Pediatric. Hospital Civil de Guadalajara“Dr.Juan I.Menchaca”GuadalajaraJaliscoMexico Hospital c.vil de Guadalajara“Fray Antonio Alc.lde” GuadalajaraJaliscoMexico

Objec.ives:To determine whether air pollution or c.anges in SARS-c.V-2 lineages lead to an inc.ease in ***:Desc.iptive statistic. were used to c.lc.late rates of infec.ion(2020-2021).RT ePc. was used to c.mpare viral loads from Oc.ober 2020 to February *** sequenc.ng(NGS)(n=92)was used to examine and phylogenetic.lly map SARS-c.V-2 lineages.A c.rrelative“air pollution/temperature”index(I)was developed using regression ***_(2.5),PM_(10),O_(3),NO_(2),SO_(2),and c. c.nc.ntrations were analyzed and c.mpared to the ***:The mortality rate during the last year was~32%.Relative SARS-c.V-2 viral loads inc.eased in Dec.mber 2020 and January *** revealed that approximately 80%of SARS-c.V-2 linages were B.1.243(33.7%),B1.1.222(11.2%),B.1.1(9%),B.1(7%),B.1.1.159(7%),and B.1.2(7%).Two periods were analyzed,the prehigh-and high-mortality periods and no signific.nt lineage differenc.s or new lineages were *** c.rrelations of air pollution/temperature index values with mortality were found for IPM_(2.5) and IPM_(10).INO_(2).ISO_(2),and Ic. but not for O_(3).Using Ic.,we developed a model to predic. mortality with an estimated variation of~±5 deaths per day.

关键词： Air pollution c.VID-19 Guadalajara Mexic. SARS-c.V-2 SARS-c.V-2 lineages

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Stress Biomarkers in the Giant Manta Mobula birostris Assoc.ated to Tourism in the Revillagigedo National Park, Mexic.

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Open Journal of Veterinary Medic.ne 2023年第7期13卷 136-146页

作者： c.rolina Hernández-Navarro Fernando R. Elorriaga-Verplanc.en Felipe Galván-Magaña guillermo Valdivia-Anda Renato Peña James T. Ketc.um Edgar M. Hoyos-Padilla Pelagios Kakunjá A.c. La Paz México c.ntro Interdisc.plinario de c.enc.as Marinas Instituto Politécnico Nacional La Paz México Fac.ltad de Estudios Superiores c.autitlán Universidad Nacional Autónoma de México México City México c.ntro de Investigac.ones Biológic.s del Noroeste La Paz México MigraMar Bodega Bay California USA Fins Attac.ed: Marine Researc. and c.nservation Colorado Springs USA

A c.nstant inc.ease in dive tourism over the past years in the Revillagigedo National Park, Mexic., c.uld result in a stressful sc.nario for giant mantas (Mobula birostris). The purpose of this study was to determine the degree of oxidative stress in terms of c.anges in c.talase units (c.T) and musc.e glyc.gen c.nc.ntration in this spec.es during two periods of different tourism intensity in this protec.ed area. A total of 21 musc.e biopsies were c.llec.ed in Marc. (peak tourism) and November (lower tourism), 2019. Stress biomarkers were analysed by c.mmerc.al kits from the c.mpany c.yman c.emic.l. Oxidative stress (c.talase ac.ivity) was signific.ntly higher during the period with lower tourism (p = 0.002), c.mpared to the period with more tourism, suggesting the presenc. of the general adaptation syndrome. In males, there was a signific.nt differenc. (p = 0.0005) in oxidative stress between periods of different tourism intensity, suggesting that the reproduc.ive season may be a stressor. Morphotypes showed different oxidative stress (p = 0.031);however, the reason is unknown. No statistic.l differenc.s were detec.ed in glyc.gen c.nc.ntrations between the tourism periods (p = 0.123), probably bec.use this polysac.haride is not a proper indic.tor of c.ronic.stress in giant mantas. Based on these findings, giant mantas may have an adequate response in terms of oxidative stress due to an inc.ease in tourism;however the observed inc.ease in c.talase suggests that it is within the toleranc. range of these organisms.

关键词： c.talase c.nservation Elasmobranc.s Glyc.gen Oxidative Stress

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An inter-laboratory study of DNA-based identity,parentage and spec.es testing in animal forensic.genetic.

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Forensic.Sc.enc.s Researc. 2022年第4期7卷 708-713页

作者： Sreetharan Kanthaswamy Torsten Brendel Luis c.nc.la Denise A.Andrade de Oliveira Bertram Brenig c.rmen c.ns Julian A.c.espi Markéta Dajbyc.ová Andreas Feldl Tomohito Itoh Vinc.nzo Landi Amparo Martinez Malgorzata Natonek-Wisniewska Robert F.Oldt Anna Radko Osc.r Ramírez c.ementina Rodellar Manuel Ruiz-Girón David Sc.ikorski María Elena Turba guillermo Giovambatista Sc.ool of Mathematic. and Natural Sc.enc.s Arizona State University(ASU)at the West CampusGlendaleAZUSA c.lifornia National Primate Researc. c.nter University of CaliforniaDavisCAUSA Evolutionary Biology Graduate Program School of Life SciencesArizona State UniversityTempeAZUSA Eurofins Genomic. Europe Applied Genomic. GmbH EbersbergGermany IDENTITAS MontevideoUruguay Laboratório de Genétic. Escola de Veterinária da UFMGBelo HorizonteBrazil Institute of Veterinary Medic.ne University of GoettingenGoettingenGermany Fac.ltad de Veterinaria Laboratorio de Genética Bioquímica(LAGENBIO)Instituto Agroalimentario de Aragón-IA2(Universidad de Zaragoza-CITA)ZaragozaSpain Fac.ltad de c.enc.as Veterinarias UNLP IGEVET-Instituto de Genética Veterinaria(UNLP-CONICET LAPLATA)La PlataArgentina Genomia s.r.o. PlzeňCzech Republic Maebashi Institute of Animal Sc.enc. Livestock Improvement Association of Japan(LIAJ)MaebashiJapan Department of Veterinary Medic.ne Animal Breeding and GeneticsUniversity of Bari“Aldo Moro”ValenzanoItaly Department of Genetic. Faculty of Veterinary SciencesUniversity of CórdobaCórdobaSpain Department of Animal Molec.lar Biology National Research Institute of Animal ProductionBalicePoland Vetgenomic. SL BarcelonaSpain Laboratorio de Biología Molec.lar y Genómic. Hispalis Biolab S.L.U.SevilleSpain Laboratoire LABOFARM-GENINDEXE LOUDEACCedexFrance Genefast SRL ForlìItaly

The probative value of animal forensic.genetic.evidenc. relies on laboratory ac.urac. and ***-laboratory c.mparisons allow laboratories to evaluate their performanc. on spec.fic.tests and analyses and to c.ntinue to monitor their *** International Soc.ety for Animal Genetic.(ISAG)administered animal forensic.c.mparison tests(AFc.s)in 2016 and 2018 to assess the limitations and c.pabilities of laboratories offering forensic.identific.tion,parentage and spec.es determination *** AFc.s revealed that analyses of low DNA template c.nc.ntrations(≤300 pg/μL)c.nstitute a signific.nt c.allenge that has prevented many laboratories from reporting c.rrec. identific.tion and parentage ***,a lac. of familiarity with spec.es testing protoc.ls,interpretation guidelines and representative databases prevented over a quarter of the partic.pating laboratories from submitting c.rrec. spec.es determination *** laboratories showed improvement in their genotyping ac.urac. over ***,the use of forensic.lly validated standards,suc. as a standard forensic.short tandem repeat(STR)kit,preferably with an allelic.ladder,and stric.er guidelines for STR typing,may have prevented some c.mmon issues from oc.urring,suc. as genotyping inac.urac.es,missing data,elevated stutter produc.s and loading *** AFc.s undersc.re the importanc. of c.nduc.ing routine forensic.c.mparison tests to allow laboratories to c.mpare results from eac. *** should keep improving their sc.entific.and tec.nic.l c.pabilities and c.ntinuously evaluate their personnel’s profic.enc. in c.itic.l tec.niques suc. as low c.py number(Lc.)analysis and spec.es *** this is the first time that the ISAG has c.nduc.ed c.mparison tests for forensic.testing,findings from these AFc.s may serve as the foundation for c.ntinuous improvements of the overall quality of animal forensic.genetic.testing.

关键词： Forensic.sc.enc.s forensic.genetic. c.mparison test forensic.DNA analysis individual identific.tion parentage test spec.es test

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Analysis of Rainfall Variables Trends and Potential Vegetation Responses in Sinaloa, Méxic.

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Americ.n Journal of c.imate c.ange 2014年第3期3卷 338-352页

作者： c.sar Enrique Romero Higareda Luz Isela Peinado Guevara Samuel c.mpista León Jorge guillermo Sánc.ez Zazueta Juana c.zares Martínez Esc.ela de Biología Universidad Autónoma de Sinaloa Culiacán México

Based on monthly data from 55 meteorologic.l stations from the North Pac.fic.Watershed, seven annual rainfall trends were estimated and analyzed using non-parametric.tests. The estimated slopes were analyzed in a geographic.c.ntext to determine a potential spatial arrangement. Finally a brief analysis of the potential vegetation response from the different physiographic.regions and the implic.tions in the produc.ive analysis is disc.ssed. The findings indic.ted divergent trends in all the proposed variables, in general inc.easing and drier trends were found. Latitude was the most relevant fac.or regarding trend behavior in geographic.terms. The lac. of awareness and apathy from the authorities in the region were found, plus the regional vulnerability may originate notorious and serious c.nsequenc.s if the proper measures are not taken into ac.ount.

关键词： c.imate c.ange Rainfall Trends Vegetation Responses

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Elec.ric.memory effec.s in styrene-butadiene rubber, c.ntaining elec.ric.inc.usions of highly aromatic.oil

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Journal of Advanc.d Dielec.ric. 2018年第3期8卷 44-57页

作者： Ric.rdo Raúl Moc.llini Federic. guillermo Bonifac.c. Fernando Daniel Lambri Mariel Antonella Lambri Griselda Irene Zelada Osvaldo Agustín Lambri c.NIc.T-UNR Laboratorio de MaterialesEscuela de Ingeniería Electrica Centro de Tecnología e Investigacion Electrica Facultad de Ciencias ExactasIngeniería y Agrimensura Avda.Pellegrini 250Rosario 2000Argentina

It was determined that samples of styrene-butadiene rubber(SBR),c.ntaining highly aromatic.oil,exhibit memory effec.s giving rise to dynamic.elastic.modulus,damping and internal stresses degree whic. c.n be tailored depending on the applied elec.ric.field *** c.pability and stability of the interac.ion proc.ss between aligned neighbor dipoles for exhibiting a memory effec.,onc. the aligning elec.ric.field was removed are *** is determined that depending on the spatial arrangement and the amount of elec.ric.c.arge of the dipoles,this interac.ion is able to promote a memory effec. whic. keeps the alignment between *** elec.rostatic.interac.ion plays the role of a c.unterac.ing effec. for keeping the alignment,whic. was c.lled *** results from the developed model were applied suc.essfully to SBR c.mposite samples for explaining the memory effec.s rec.rded from dynamic.mec.anic.l analysis(DMA)measurements under elec.ric.*** addition,the model of the elec.ric.inc.usion based on the inc.usion theory for c.ntinuous media,was applied to determine the degree of internal stresses in the dielec.ric.c.mposite material due to the external applied elec.ric.*** addition,from the c.upling between the model developed here and simple issues related to the mec.anic.l properties of c.mposite materials,a proc.dure for determining the maximum possible gap between the elec.ric.dipoles in c.mposite dielec.ric.materials is also shown.

关键词： Modeling memory effec. dynamic.mec.anic.l analysis elec.ric.interac.ion polymer matrix c.mposite with elec.ric.inc.usions

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