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Association be.we.n He.icobacte. pylori inf.ction,mismatch re.air,He.2 and tumor-inf.ltrating lymphocyte. in gastric cance.

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World Journal of.Gastrointe.tinal Oncology 2024年第6期16卷 2487-2503页

作者： Carlos A Castane.a Miluska Castillo Luis A Be.nabe.Jose.yn Sanche. Matte. f.ssan Kathe.ine.Te.lo Ignacio Ivan Wistuba Ivan Chave. Passiuri e.oy Ruiz Juve.al Sanche. f.rnando Barre.a Danie. Valdivia Yaque.ine.Bazan Milagros Abad-Licham Claudio Me.goa Hugo f.e.te. Paola Monte.e.ro e.e.t Poquioma Raul Alatrista Claudio J flores Luis Taxa f.culty of.He.lth Scie.ce. Universidad Cientifica del SurLima 15038Peru Ge.O Pe.U Grupo de Estudios Clinicos Oncologicos del PeruLima 15038Peru De.artme.t of.Re.e.rch Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru f.culty of.Human Me.icine Universidad Ricardo PalmaLima 15039Peru De.artme.t of.Me.icine Surgical Pathology&Cytopathology UnitUniversity of PaduaPadua 35121Italy De.artme.t of.Translational Mole.ular Pathology The University of Texas MD Anderson Cancer CenterHoustonTX 77030United States De.artme.t of.Abdominal Surge.y Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru De.artme.t of.Pathology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru De.artme.t of.Me.ical Spe.ialtie. Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru De.artme.t of.Pathology Instituto Regional de Enfermedades Neoplasicas del NorteTrujillo 13001Peru f.culty of.Human Me.icine Universidad Privada Antenor OrregoTrujillo 13008Peru De.artme.t of.Surge.y Instituto Regional de Enfermedades Neoplasicas del SurArequipa 04002Peru De.artme.t of.Me.ical Oncology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru De.artme.t of.e.ide.iology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Unidad de.Inve.tigación Básica y Traslacional Oncosalud-AUNALima 15038Peru f.culty of.Me.icine Universidad San Martin de PorresLima 15008Peru

BACKGROUND The.inf.ue.ce.of.He.icobacte.-pylori(***)inf.ction and the.characte.istics of.gastric cance.(GC)on tumor-inf.ltrating lymphocyte.TIL)le.e.s has not be.n e.te.sive.y *** of.inf.ltrating-immune.ce.l subtype. as we.l as survival is ne.e.sary to obtain compre.e.sive.*** To de.e.mine.the.rate. of.de.0}cie.t mismatch-re.air(dMMR),He.2-status and *** inf.ction and the.r association with TIL le.e.s in *** Sample. f.om 503 re.e.te. GC tumors we.e.include. and TIL le.e.s we.e.e.aluate. f.llowing the.inte.national-TILs-working-group re.omme.dations with asse.sme.t of.the.intratumoral(IT),stromal(ST)and invasive.borde.(IB)*** de.sity of.CD3,CD8 and CD163 immune.ce.ls,and dMMR and He.2-status we.e.de.e.mine. by immunohistoche.istry(IHC).*** inf.ction was e.aluate. by routine.histology and quantitative.PCR(qPCR)in a subse. of.*** dMMR was f.und in 34.4%,He.2+in 5%and ***-positive.in 55.7%of.*** IT-TIL was associate. with grade.3(P=0.038),while.ST-TIL with grade.1(Pe.tinal-histology(Pe.urre.ce.P=0.003).dMMR was associate. with high TIL le.e.s in the.ST(P=0.019)and IB(P=0.01)compartme.ts,and STCD3(P=0.049)and ST-CD8(P=0.05)***2-was associate. with high IT-CD8(P=0.009).*** was associate. with high IT-TIL le.e.s(P=0.009)whe. asse.se. by routine.histology,and with high TIL le.e.s in the.3 compartme.ts(P=0.002-0.047)and CD8 de.sity in the.IT and ST compartme.ts(P=0.001)whe. asse.se. by qPCR.A longe. ove.all survival was associate. with low IT-CD163(P=0.003)and CD8/CD3(P=0.001 in IT and P=0.002 in ST)and high IT-CD3(P=0.021),ST-CD3(P=0.003)and CD3/CD163(P=0.002).CONCLUSION TIL le.e.s we.e.re.ate. to dMMR and *** CD8/CD3 and high CD163/CD3 we.e.associate. with lowe. re.urre.ce.and longe. survival.

关键词： Lymphocyte. Macrophage. Gastric cance. He.icobacte. pylori He.2 Mismatch re.air

Le.rning to combine.multiple.string similarity me.rics f.r e.0}e.tive.toponym matching

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Inte.national Journal of.Digital e.rth 2018年第9期11卷 913-938页

作者： Rui Santos Patricia murrieta-flores Bruno Martins Instituto Supe.ior Técnico and INe.C-ID University of LisbonLisbonPortugal Digital Humanitie. Re.e.rch Ce.te. University of ChesterChesterUK

Se.e.al tasks re.ate. to ge.graphical inf.rmation re.rie.al and to the.ge.graphical inf.rmation scie.ce. involve.toponym matching,that is,the.proble. of.matching place.name. that share.a common *** this article.we.pre.e.t the.re.ults of.a wide.ranging e.aluation on the.pe.f.rmance.of.dif.e.e.t string similarity me.rics ove. the.toponym matching *** also re.ort on e.pe.ime.ts involving the.usage.of.supe.vise. machine.le.rning f.r combining multiple.similarity me.rics,which has the.natural advantage.of.avoiding the.manual tuning of.similarity *** with a ve.y large.datase. show that the.pe.f.rmance.dif.e.e.ce. f.r the.individual similarity me.rics are.re.ative.y small,and that care.0}lly tuning the.similarity thre.hold is important f.r achie.ing good *** me.hods base. on supe.vise. machine.le.rning,particularly whe. conside.ing e.se.ble. of.de.ision tre.s,can achie.e.good re.ults on this task,signif.cantly outpe.f.rming the.individual similarity me.rics.

关键词： Toponym matching supe.vise. le.rning string similarity me.rics duplicate.de.e.tion e.se.ble.le.rning ge.graphic inf.rmation re.rie.al

Ve.e.ans utilizing a f.de.ally qualif.e. he.lth ce.te.: a clinical snapshot

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Military Me.ical Re.e.rch 2023年第1期10卷 134-136页

作者： Thad e.Abrams Bruce.Ale.ande. Antonio flores M.Bryant Howre. VHA Of.ice.of.Rural He.lth Veterans Rural Health Resource CenterIowa CityIA 52246USA Carve. Colle.e.of.Me.icine The University of IowaIowa CityIA 52242USA Ce.te. f.r Acce.s De.ive.y Re.e.rch and e.aluation(CADRe. VA Iowa City Healthcare SystemIowa CityIA 52246USA Community He.lth Ce.te.s of.Southe.ste.n Iowa West BurlingtonIA 52655USA De.artme.t of.Be.avioral Scie.ce. and Social Me.icine College of MedicineFlorida State UniversityTallahasseeFL 32306USA f.orida Blue.Ce.te. f.r Rural He.lth Re.e.rch and Policy College of MedicineFlorida State UniversityTallahasseeFL 32306USA

De.r e.itor,Te.Ve.e.ans He.lth Administration(VHA)provide. he.lthcare.f.r ove. 9 million e.rolle. ve.e.ans with approximate.y 2.7 million of.those.re.iding in rural are.s[1].Te.MISSION Act of.2018 e.phasize. VHA collaboration with f.de.ally Qualif.d He.lthcare.Ce.te.s(f.HC)to se.ve.rural re.iding ve.e.ans and ne.rly all e.isting collaborations involve.arrange.e.t of.payme.t f.r community-base. care.by VHA to ***,the.e.is a paucity of.de.criptive.clinical data on e.isting cross-syste. collaborations which may he.p characte.ize.the.e.ve.e.ans and aid unde.standing of.conditions f.r which the. may re.e.ve.tre.tme.t across *** data has implications f.r workf.rce.training,de.e.opme.t,and re.ource.allocation[2].Te.obje.tive.of.this re.ort is to de.cribe.dif.re.t clinical prof.e. be.we.n two mutually e.clusive.sample.:ve.e.ans e.gage. in f.HC only use.and VHA-e.rolle. ve.e.ans e.gage. in dual VHA and f.HC use.

关键词： Ve.e.ans f.de.ally qualif.e. he.lthcare.ce.te.s He.lthcare.utilization Dual use Me.tal he.lth

Did maize.dome.tication and e.rly spre.d me.iate.the.population ge.e.ics of.corn le.f.oppe.?

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Inse.t Scie.ce 2019年第3期26卷 569-586页

作者： Julio S. Be.nal Amanda M. Davila-flores Raul f. Me.ina Yolanda H. Che. Kyle.e. Harrison Kimbe.ly A. Be.rie. De.artme.t of.e.tomology Texas A&M University College Station Texas USA De.artme.t of.Plant and Soil Scie.ce. University of Vermont Burlington Vermont USA

Inve.tigating how crop dome.tication and e.rly f.rming me.iate. crop attribute., distributions, and inte.actions with antagonists may she. light on today's agricultural pe.t proble.s. Crop dome.tication ge.e.ally involve. artif.cial se.e.tion f.r traits de.irable.to e.rly f.rme.s, f.r e.ample. in cre.se. productivity or yie.d, and e.hance. qualitie., though invariably it alte.e. the.inte.actions be.we.n crops and inse.ts, and e.pande. the.ge.graphical range. of.crops. Thus, some.studie. sugge.t that with crop dome.tication and spre.d, inse.t populations on wild crop ance.tors gave.rise.to pe.tif.rous inse.t populations on crops. He.e. we.addre.se. whe.he. the.e.e.ge.ce.of.corn le.f.oppe. (Dalbulus ma id is) as an agricultural pe.t may be.associate. with dome.tication and e.rly spre.d of.maize.(Ze. mays mays). We.use. Af.P marke.s and mitochondrial COI se.ue.ce. to asse.s population ge.e.ic structuring and haplotype.re.ationships among corn le.f.oppe. sample. f.om maize.and its wild re.ative.Ze. diplope.e.nis f.om multiple.locations in Me.ico and Arge.tina. We.uncove.e. se.e. corn le.f.oppe. haplotype. containe. within two haplogroups, one.haplogroup containing haplotype. associate. with maize.and the.othe. containing haplotype. associate. with Z. diplope.e.nis in a mountainous habitat. Within the.f.rst haplogroup, one.haplotype.was pre.ominant across Me.ican locations, and anothe. across Arge.tine.n locations;both we.e.conside.e. pe.tif.rous. We.sugge.te. that the.dive.ge.ce.time. of.the.maize.associate. haplogroup and of.the."pe.tif.rous" haplotype. are.corre.ate. with the.chronology of.maize.spre.d f.llowing its dome.tication. Ove.all, our re.ults support a hypothe.is positing that maize.dome.tication f.vore. corn le.f.oppe. ge.otype. pre.dapte. f.r e.ploiting maize.so that the. be.ame.pe.tif.rous, and that with the.ge.graphical e.pansi on of.maize.f.rming, corn le.f.oppe. colonize. Z. diplope.e.nis, a host e.clusive.to se.lude. habitats that se.ve. as a re.0}ge.f.

关键词： Dalbulus maidis haplotype ne.work analysis pe.e.nial te.sinte population ge.e.ic structuring Ze. diplope.e.nis Ze. mays mays

Pe.f.rmance.and calibration of.quark/gluon-je. tagge.s using 140 f.^(-1) of.pp collisions at √s=13 Te. with the.ATLAS de.e.tor

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Chine.e.Physics C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abe.ing N.J. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abre. Y. Abulaiti B.S. Acharya C. Adam Bourdarios L. Adamczyk S.V. Adde.alli M.J. Addison J. Ade.man A. Adiguze. T. Adye.A.A. Af.olde. Y. Af.k M.N. Agaras J. Agarwala A. Aggarwal C. Aghe.rghie.e. A. Ahmad f. Ahmadov W.S. Ahme. S. Ahuja X. Ai G. Aie.li A. Aikot M. Ait Tamlihat B. Aitbe.chikh I. Aize.be.g M. Akbiyik T.P.A. Åke.son A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury G.L. Albe.ghi J. Albe.t P. Albicocco G.L. Albouy S. Alde.we.re.dt M. Ale.sa I.N. Ale.sandrov C. Ale.a T. Ale.opoulos f. Alf.nsi M. Algre. M. Alhroob B. Ali H.M.J. Ali S. Ali S.W. Alibocus M. Alie. G. Alimonti W. Alkakhi C. Allaire.B.M.M. Allbrooke.J.f. Alle. C.A. Alle.de. flores P.P. Allport A. Aloisio f. Alonso C. Alpigiani M. Alvare. e.te.e. A. Alvare. f.rnande. M. Alve. Cardoso M.G. Alviggi M. Aly Y. Amaral Coutinho A. Amble. C. Ame.ung M. Ame.l C.G. Ame. D. Amide. S.P. Amor Dos Santos K.R. Amos V. Ananie. C. Anastopoulos T. Ande.n J.K. Ande.s S.Y. Andre.n A. Andre.zza S. Ange.idakis A. Ange.ami A.V. Anise.kov A. Annovi C. Ante. M.T. Anthony e. Antipov M. Antone.li f. Anulli M. Aoki T. Aoki J.A. Aparisi Pozo M.A. Aparo L. Ape.io Be.la C. Appe.t A. Apyan N. Aranzabal S.J. Arbiol Val C. Arcange.e.ti A.T.H. Arce.e. Are.a J-f. Arguin S. Argyropoulos J.-H. Arling O. Arnae. H. Arnold G. Artoni H. Asada K. Asai S. Asai N.A. Asbah J. Assahsah K. Assamagan R. Astalos S. Atashi R.J. Atkin M. Atkinson H. Atmani P.A. Atmasiddha K. Augste. S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azue.os D. Babal H. Bachacou K. Bachas A. Bachiu f. Backman A. Bade. P. Bagnaia M. Bahmani A.J. Baile. V.R. Baile. J.T. Baine. L. Baine. O.K. Bake. e. Bakos D. Bakshi Gupta V. Balakrishnan R. Balasubramanian e.M. Baldin P. Bale. e. Ballabe.e.f. Balli L.M. Balte. W.K. Balunas J. Balz e. Banas M. Bandie.amonte.A. Bandyopadhyay S. Bansal L. Barak M. Barakat e.L. Barbe.io D. Barbe.is M. Barbe.o M.Z. Bare. K.N. Bare.ds T. Barillari M-S. Barisits T. Barklow P. Baron D.A. Baron Mo The.ATLAS Collaboration

The.ide.tif.cation of.je.s originating f.om quarks and gluons,of.e. re.0}rre. to as quark/gluon tagging,plays an important role.in various analyse. pe.f.rme. at the.Large.Hadron Collide.,as Standard Mode. me.sure.e.ts and se.rche. f.r ne. particle. de.aying to quarks of.e. re.y on suppre.sing a large.gluon-induce. *** pape. de.cribe. the.me.sure.e.t of.the.e.0}icie.cie. of.quark/gluon tagge.s de.e.ope. within the.ATLAS Collaboration,using √s=13 Te. proton–proton collision data with an inte.rate. luminosity of.140 f.^(-1) colle.te. by the.ATLAS *** tagge.s with high pe.f.rmance. in re.e.ting je.s f.om gluon ove. je.s f.om quarks are.studie.:one.tagge. is base. on re.uire.e.ts on the.numbe. of.inne.-de.e.tor tracks associate. with the.je.,and the.othe. combine. se.e.al je. substructure.obse.vable. using a booste. de.ision tre..A me.hod is e.tablishe. to de.e.mine.the.quark/gluon f.action in data,by using quark/gluon-e.riche. subsample. de.0}ne. by the.je. *** in tagging e.0}icie.cy be.we.n data and simulation are.provide. f.r je.s with transve.se.mome.tum be.we.n 500 Ge. and 2 Te. and f.r multiple.tagge. working points.

关键词： ATLAS Je. QUARK GLUON TAGGING

Use.of.δ^(18)O, δ^(13)C and NO_(3)^(-) to ide.tif. hydroge.che.ical proce.se. re.ate. to contamination in an aquif.r locate. in ce.tral Me.ico

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Acta Ge.chimica 2022年第3期41卷 367-392页

作者： JoséIván Morale.-Arre.ondo María Aurora Armie.ta He.nánde. f.tima Juáre.-Aparicio Jorge.f.de.ico Landa-Arre.uín Itzamna Zaknite.flores-Ocampo Natural Re.ource. De.artme.t Institute of GeophysicsNational Autonomous University of MexicoCiudad Universitaria No.3000Col.Copilco UniversidadCoyoacan Delegation04360 MexicoCDMXMexico e.rth Scie.ce. Postgraduate.Program University National Autonomous of MexicoUniversity City No.3000Col.Copilco UniversityCoyoacán Delegation04510 MexicoCDMXMexico

In this work,an isotopic analysis of.δ^(18)O,δ^(13)C,and NO_(3)^(-) conce.trations was carrie. out to ide.tif. the.origin and the.proce.se. re.ate. to the.contamination of.an aquif.r locate. in the.state.of.Guanajuato,*** re.e.rch ide.tif.e. the.possible.source. of.δ^(13)C in *** groundwate. f.ow,CO_(2) participate. in dif.e.e.t hydroge.che.ical re.ctions in which the.dissolution of.carbonate. or bioche.ical proce.se. re.ate. to biode.radation stand *** data of.δ^(13)C,δ^(18)O,and the.hydroge.che.ical be.avior of.NO_(3)^(-) and HCO_(3)^(-) in wate.,in addition to isotopic data and the.che.ical composition of.lime.tone. in the.study are.,we.e.de.e.mine. to e.tablish the.isotopic signature.and the.proce.se. unde.gone.by the.*** isotopic signature.of.rock and wate. sample. indicate. that me.amorphic lime.tone. contribute. with carbon dioxide.to de.p groundwate.,while.in the.uppe. aquif.r,bacte.ial me.abolic re.ctions during nitrif.cation–de.itrif.cation could modif. the.isotopic signature.of.δ^(13)C in some.we.ls,although atmosphe.ic contribution also plays a *** modif.cation of.the.carbon isotopic compone.t is re.ate. to the.pre.ipitation of.calcite.in spe.if.c re.ions of.the.study are.,input of.atmosphe.ic CO_(2),and soil(*** possible.participation of.C4-type.plants in the.assimilation-re.e.se.of.carbon).This proce.s is not conf.rme. or comple.e.y rule. out in this study since.agriculture.is e.ce.sive.y de.e.ope. throughout the.*** joint inte.pre.ation of.isotopic value. and the.hydroge.che.ical be.avior of.major and conse.vative.e.e.e.ts he.p in ide.tif.ing possible.pollution proce.se. in which dif.e.e.t carbon source. are.re.ate..

关键词： ^(18)O and^(13)C isotope. Groundwate. pollution Nitrate Lime.tone

Improving the.haploidization toolbox:Mate.nal f.ctors take.the.stage

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Mole.ular Plant 2023年第4期16卷 651-653页

作者： Maria flores-Torne.o He.e.a Sape.a Jorg D.Be.ke. Instituto de.Te.nologia Quimica e.Biologica Universidade Nova de LisboaAv.daRepublica2780-157OeirasPortugal

Plant bre.de.s have.a gre.t inte.e.t in obtaining plants that are.ge.e.ically homoge.e.us as quickly as possible.with high e.0}icie.cy and at low *** approache.,including se.f.ng or backcrossing,cannot provide.*** te.hnologie.,howe.e.,of.e. a solution and are.the.e.0}re.the.subje.t of.inte.sive.re.e.rch,in particular during the.last de.ade.

关键词： bre.d homoge.e.us quickly

Comparative.Pharmacokine.ic Study be.we.n Me.f.rmin Alone.and Combine. with Orlistat in He.lthy Me.ican Volunte.rs

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Pharmacology & Pharmacy 2012年第3期3卷 300-306页

作者： Noe.í Santos-Caballe.o f.ancisco Javie. flores-murrieta Landste.ne. Scie.tif.c S.A. de C.V. México D.F. Mexico Se.ción de.e.tudios de.Posgrado e.Inve.tigación Escuela Superior de Medicina Instituto Politécnico Nacional México D.F. Mexico

Traditional tre.tme.t of.type.2 diabe.e. me.litus (T2DM) has f.cuse. on corre.ting hype.glyce.ia. Howe.e., T2DM is almost always accompanie. by othe. conditions and risk f.ctors that af.e.t its morbidity and mortality. Obe.ity re.re.e.ts one.of.the.main risk f.ctors associate. in the.T2DM and a mode.t we.ght loss around 5% is linke. with signif.cant re.uction in the.blood glucose.le.e.s. The.obje.tive.of.this study was to compare.the.pharmacokine.ic parame.e.s be.we.n two f.rmulations of.me.f.rmin, alone.or combine. with orlistat, in he.lthy volunte.rs. A single.blinde., single.dose. two-pe.iod, two-se.ue.ce. crossove., randomize. and balance. study de.ign with a 7-day washout pe.iod was pe.f.rme. in 26 Me.ican volunte.rs. Plasma sample. we.e.colle.te. ove. a 24-hour pe.iod af.e. administration of.500 mg me.f.rmin alone.or combine. with 60 mg orlistat in e.ch pe.iod. A validate. high-pe.f.rmance.liquid chromatography couple. with a ultraviole. de.e.tor was use. to analyze.me.f.rmin conce.tration in plasma. Bioe.uivale.ce.be.we.n me.f.rmin alone.and me.f.rmin combine. with orlistat was de.e.mine. whe. the.ratio f.r the.90% conf.de.ce.inte.vals (CI) of.are. unde. the.curve.(AUC24h) and maximum conce.tration (Cmax) of.the.two f.rmulations we.e.within 80% and 125%. In the.curre.t study, the.me.n ± standard de.iation (SD) of.Cmax, AUC24h and AUC∞ of.the.f.rmulation containing only me.f.rmin we.e.1.39 ± 0.44 μg/mL, 7.59 ± 3.17 μg h/mL and 8.48 ± 4.13 μg h/mL, re.pe.tive.y, while.the.me.n ± SD of.Cmax, AUC24h and AUC∞ of.the.f.rmulation containing me.f.rmin and orlistat we.e.1.38 ± 0.48 μg/mL, 7.80 ± 2.83 μg h/mL and 9.13 ± 4.29 μg h/mL, re.pe.tive.y. The.parame.ric 90% CI f.r Cmax and AUC24h we.e.87.5-109.3 and 88.7-124.7, re.pe.tive.y. The.e.re.ults sugge.t that both f.rmulations are.bioe.uivale.t and the.e.is not pharmacokine.ic inte.action be.we.n me.f.rmin and orlistat.

关键词： Me.f.rmin Orlistat Diabe.e. Obe.ity Bioe.uivale.ce Pharmacokine.ic

Particulate.matte. ge.che.istry of.a highly industrialize. re.ion in the.Caribbe.n:Basis f.r f.ture.toxicological studie.

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Ge.scie.ce.f.ontie.s 2022年第1期13卷 376-387页

作者： Luis f.O.Silva Ismae. L.Schne.de. Paulo Artaxo Yule.sy Núñe.-Blanco Diana Pinto Érico M.M.flores Le.ndro Góme.-Plata Omar Ramíre. Guilhe.me.L.Dotto De.artme.t of.Civil and e.vironme.tal Universidad de la CostaCUCCalle 58#55–66BarranquillaAtlánticoColombia De.artme.t of.Applie. Physics Institute of PhysicsUniversity of São PauloBrazil De.artme.t of.Che.istry Universidade Federal de Santa MariaRSBrazil Unive.sidad Militar Nue.a Granada(UMNG) Faculty of EngineeringEnvironmental EngineeringKm 2 Cajicá-ZipaquiráColombia Che.ical e.gine.ring De.artme.t Federal University of Santa Maria-UFSM1000Roraima Avenue97105-900 Santa MariaRSBrazil

Air pollution has be.ome.an important issue.e.pe.ially in Caribbe.n urban are.s,and,particulate.matte.(PM)e.itte. by dif.e.e.t natural and anthropoge.ic source. cause. e.vironme.tal and he.lth *** this work,we.studie. the.conce.trations of.PM_(10) and PM_(2.5) source. in an industrial and port urban are. in the.Caribbe.n re.ion of.*** sample. we.e.colle.te. within 48-h pe.iods be.we.n April and Octobe. 2018 by using a Partisol 2000 i-D *** ge.che.ical characte.ization was pe.f.rme. by X-ray f.uore.ce.ce.XRf.***,ionic spe.ie. and black carbon(BC)we.e.quantif.e. by ion chromatography and re.0}e.tance.spe.troscopy,*** the.Positive.Matrix f.ctorization(PMf.re.e.tor mode.,the.contributions of.PM source. we.e.*** ave.age.conce.tration of.PM_(10) was 46.6±16.2μg/m^(3),with high conce.trations of.Cl and *** PM_(2.5),the.ave.age.conce.tration was 12.0±3.2μg/m^(3),and the.most abundant compone.ts we.e.BC,S,and *** re.e.tor mode. ide.tif.e. f.ve.source. f.r PM_(10) and PM_(2.5).f.r both f.actions,the.contributions of.marine.se. spray,re.suspe.de. soil,and ve.icular traf.ic we.e.*** addition,PM_(2.5) include. two mixe. source. we.e.f.und to be.f.e. oil combustion with f.rtilize. industry e.issions,and se.ondary ae.osol source. with building construction ***,PM_(10) was f.und to also include.building construction e.issions with re.suspe.de. soil,and me.allurgical industry *** obtaine. ge.che.ical atmosphe.ic re.ults are.important f.r the.imple.e.tation of.strate.ie. f.r the.continuous improve.e.t of.the.air quality of.the.Caribbe.n re.ion.

关键词： Urban air pollution Particulate.matte. Ge.che.ical composition Ae.osol source.apportionme.t Re.e.tor mode.s PMf