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Surgica. site infection following pa.crea.icoduodenectomy in a.referra. ca.cer center in Mexico

Hepa.obilia.y & Pa.crea.ic Disea.es Interna.iona. 2024年第5期23卷 502-508页

作者： Rodrigo Villa.eñor-Echav.rri Jav.er Melchor-Rua. Mercedes a.a.da.a.delo Ga.riela.a.redondo-Sa.da.a.Pa.ricia.Volkow-Ferna.dez Ma.ia.del Ca.men Ma.za.o-Robleda.a.eja.dro E Pa.illa.Roscia.o Dia.a.Vila.-Compte Depa.tment of Infectious Disea.es Instituto Nacional de CancerologíaAv.San Fernando 22Belisario Domínguez Secc 16TlalpanMexico CityMexico School of Medicine Universidad PanamericanaAugusto Rodin No.498Insurgentes MixcoacBenito JuárezMexico CityMexico Depa.tment of Digestive Tube a.d Hepa.opa.crea.obilia.y Tumors Instituto Nacional de CancerologíaAv.San Fernando 22Belisario Domínguez Secc 16TlalpanMexico CityMexico Depa.tment of Infectious Disea.es Hospital Manuel Gea GonzálezCalz.de Tlalpan 4800Belisario Domínguez Secc 16TlalpanMexico CityMexico Ga.trointestina. a.d Endoscopy Depa.tment Instituto Nacional de CancerologíaAv.San Fernando 22Belisario Domínguez Secc 16TlalpanMexico CityMexico

Ba.kground: Pa.crea.icoduodenectomy is the sta.da.d trea.ment for resecta.le peria.pulla.y ca.cer. Surgica. site infections(SSI) a.e common complica.ions with increa.ed morbidity. The study a.med to describe the preva.ence, risk fa.tors, microbiology, a.d outcomes of SSI a.ong pa.ients undergoing pa.crea.icoduodenectomy. Methods: We conducted a.retrospective study in a.referra. ca.cer center between Ja.ua.y 2015 a.d June 2021. We a.a.yzed ba.eline pa.ient cha.a.teristics a.d SSI occurrence. Culture results a.d susceptibility pa.terns were described. Multiva.ia.e logistic regression wa. used to determine risk fa.tors, proportiona. ha.a.ds model to eva.ua.e morta.ity, a.d Ka.la.-Meier a.a.ysis to a.sess long-term surviva.. Results: a.tota. of 219 pa.ients were enrolled in the study;101(46%) developed SSI. Independent fa.tors for SSI were dia.etes mellitus, preopera.ive a.bumin level, bilia.y dra.na.e, bilia.y prostheses, a.d clinica.ly releva.t postopera.ive pa.crea.ic fistula. The ma.n pa.hogens were Enteroba.teria.a.d Enterococci. Multidrug-resista.ce ra.e in SSI wa. high but not a.socia.ed with increa.ed morta.ity. Infected pa.ients ha. higher odds of sepsis, longer hospita. sta. a.d intensive ca.e unit sta., a.d rea.mission ra.e. Neither 30-da. morta.ity nor long-term surviva. wa. significa.tly different between infected a.d non-infected pa.ients. Conclusions: SSI preva.ence a.ong pa.ients undergoing pa.crea.icoduodenectomy wa. high a.d la.gely ca.sed by resista.t microorga.isms. Most risk fa.tors were rela.ed to preopera.ive instrumenta.ion of the bilia.y tree. SSI wa. a.socia.ed with grea.er risk of unfav.ra.le outcomes;however, surviva. wa. una.fected.

关键词： Surgica. site infection Pa.crea.icoduodenectomy Pa.crea.ic ca.cer Endoscopic bilia.y dra.na.e Bilia.y prosthesis

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a.short clima.ology of bla.k a.d brown ca.bon a.d their sources a. a.suburba. site impa.ted by smoke in Bra.il

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Journa. of Environmenta. Sciences 2024年第2期136卷 498-511页

作者： a.mir Creso Ta.gino Pa.ricia.Krecl Ga.riel Yoshika.u Ouka.a.Eva.Ma.ia.Mollinedo Gra.ua.e Progra. in Environmenta. Engineering Federal University of TechnologyAv.Pioneiros 3131LondrinaPR 86036-370Brazil Depa.tment of Environmenta. Engineering Federal University of TechnologyAv.Pioneiros 3131LondrinaPR 86036-370Brazil

Emissions from bioma.s burning cha.lenge efforts to curb a.r pollution in cities downwind of fire-prone regions,a. they contribute la.ge a.ounts of brown ca.bon(Br C)a.d bla.k ca.bon(BC)*** investiga.ed the pa.terns of Br C a.d BC concentra.ions using a.tha.ometer da.a.a.λ=370 a.d 880 nm,respectively)spa.ning four yea.s a. a.site impa.ted by the outflow of *** da.a.required to be post processed for the sha.owing effect since,without correction,concentra.ions would be between 29%a.d 35%*** Br C concentra.ions were consistently higher tha. the BC concentra.ions,indica.ing the preva.ence of a.rosols from bioma.s *** results were supported by the a.gstrom coefficient(a.(370/880)),with va.ues predomina.tly la.ger tha. 1(mea.±sta.da.d devia.ion:1.25±0.31).a.(370/880)va.ues below 1 were more preva.ent during the wet sea.on,which suggests a.contribution from fossil fuel *** observed sha.p Br C a.d BC sea.ona. signa.s,with mea. minimum concentra.ions of 0.40μg/m^(3)a.d 0.36μg/m^(3),respectively,in the wet sea.on,a.d mea. ma.imum concentra.ions of 2.05μg/m^(3)a.d 1.53μg/m^(3)in the dry *** la.gest concentra.ions were observed when northerly a.r ma.ses moved over regions with a.high density of fire *** burning of residentia. solid wa.te a.d industria. combustion ca.sed extreme Br C a.d BC concentra.ions under fav.ura.le wind *** neither polluta.t is included in a.y a.bient a.r qua.ity sta.da.ds,our results suggest tha. tra.sbounda.y smoke ma. ha.per efforts to meet the World Hea.th Orga.iza.ion guidelines for fine pa.ticles.

关键词： Light-a.sorbing ca.bona.eous ma.ter Bla.k ca.bon Wildfires Bioma.s burning a.tha.ometer

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Green Hydrogen: Perspectives a.d Cha.lenges in Using the Na.ura. Ga. Network in Cea.á/Bra.il

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Journa. of Geoscience a.d Environment Protection 2024年第3期12卷 70-94页

作者： Fra.cisco a.fredo de Ca.tro Mona.Lisa.Moura.de Oliveira.Lutero Ca.mo de Lima.Da.iel Silveira.Serra Science a.d Technology Center State University of Ceará Ceará Brazil av. Dr. Sila. Munguba 1700 Fortaleza-Ceará Brazil

Clima.e cha.ge, ma.nly ca.sed by the use of non-renewa.le fuels, ha. ra.sed globa. concerns a.d led to the sea.ch for less polluting energy sources, ma.ing hydrogen a.promising energy a.terna.ive with the potentia. to contribute to cha.ges in the energy mix of va.ious countries through the use of technologies tha. ena.le its production a.d use with low or zero ca.bon emissions. In this context, Bra.il ha. a.oused grea. interest from other countries in exploring its renewa.le resources for the production of hydrogen (green hydrogen). In this sense, the use of na.ura. ga. pipelines a.d the use of hydrogen in mixtures with na.ura. ga. hav. become the subject of studies due to their economica.ly via.le a.terna.ive for the immedia.e use of this energy vector. However, there a.e still technica. a.d regula.ory cha.lenges rega.ding the integra.ion of hydrogen into the existing na.ura. ga. pipeline network. In this context, the present study a.ms to a.dress the effects of hydrogen intera.tion with the structure of na.ura. ga. pipeline steel a.d the regula.ory ba.riers to the use of this network for the tra.sporta.ion of green hydrogen, pa.ticula.ly in the sta.e of Cea.á/Bra.il. a.ter extensive a.a.ysis of litera.ure a.d regula.ory documents, it wa. concluded tha.: 1) Cea.á/Bra.il ha. strong potentia. to meet the dema.d for green hydrogen through the use of sola. a.d wind energy sources;2) there is fea.ibility for the a.a.ta.ion or conversion of na.ura. ga. infra.tructure for the tra.sporta.ion of green hydrogen;3) discussions rega.ding the regula.ory competence of green hydrogen tra.sporta.ion a.d distribution through the na.ura. ga. network in Bra.il a.e still incipient;4) the current regula.ion of the na.ura. ga. industry ca. serve a. a.subsidy for the regula.ion of green hydrogen a.d na.ura. ga. tra.sporta.ion.

关键词： Deca.boniza.ion Na.ura. Ga. Green Hydrogen Pipelines

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Thermoluminescence cha.a.teriza.ion of na.ura. a.d synthetic irra.ia.ed Ce-mona.ites

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Journa. of Ra.e Ea.ths 2024年第4期42卷 643-650页

作者： V.Correcher C.Borona. J.Ga.cia.Guinea.J.F.Benav.nte T.Rivera.Monta.vo CIEMa. Av.Complutense 4028040MadridSpain MNCN-CSIC J.Gutierrez Abascal 228006MadridSpain Instituto Politécnico Na.iona. CICATA-IPNAv.Legaria 694Mexico City11500Mexico

The thermoluminescence(TL)emission of synthetic a.d na.ura. Ce-mona.ites wa. cha.a.terized here to determine the potentia. a.plica.ion in the identifica.ion of microscopic defects from a.qua.ita.ive point of view trying to link ea.h TL pea. to a.chemica.-physica. *** kinetic pa.a.eters tha. lea. the luminescence processes were ca.cula.ed by mea.s of va.ia.le hea.ing ra.e a.d computing glow curve deconvolution methods a.d a.low identifying three groups of components a.~90,130 a.d 290℃(for the minera. sa.ple)a.d~90,170,220,270 a.d 320℃(for the synthetic CePO_(4):Nd_(0.20),La.(0.25)).The ma.n differences a.precia.ed in these complex TL curves a.e ma.nly due to(i)the content of impurities(na.ura. sa.ple conta.ns la.tha.ides a. well a. U 0.60%a.d Th 5.22%)a.d(ii)the degree of crysta.linity of the sa.ples which is directly rela.ed to the type of impurities(synthetic mona.ite relies only on Nd a.d La..The behav.or of the dose response in the ra.ge of 1-8 Gy is simila. for both sa.ples;the TL intensity increa.es linea.ly a. the dose increa.es without cha.ges in the position of the ma.ima.denoting first-order kinetic luminescence *** pea. could be mostly a.socia.ed with structura. defects(i.e.,pha.e tra.sitions),chemica. rea.tions(i.e.,Ce3+?Ce4+redox rea.tion,dehydra.ion or dehydroxyla.ion processes)or intrinsic defects(i.e.,Frenkel defects,ODCs or NBOHCs).

关键词： Thermoluminescence Kineticpa.a.eters Phospha.e Ce-mona.ite Defects Ra.e ea.ths

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Pinus sylvestris a.d Picea.a.ies ca.opy effects on deposition of a.r polluta.ts

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Journa. of Forestry Resea.ch 2024年第4期35卷 34-46页

作者： Va.entina.Černia.ska. Iveta.Va.na.irytė‑Ka.a.insk ienė Va.da.a.a.inienė Vida. Sta.ėna. Lithua.ia. Resea.ch Centre for a.riculture a.d Forestry Instituto Av.1Akademija58344 Kėdainiai distr.Lithuania

Tree ca.opies influence a.mospheric polluta.t depositions depending on type,ecosystem cha.a.teristics,a.d loca. clima.ic *** study investiga.ed the impa.t of Pinus sylvestris *** Picea.a.ies(L.)***.,a.d a.mixture of both,on the chemica. composition of *** perma.ent plots within the ICP forest level Ⅱ monitoring network in Lithua.ia.were selected to illustra.e typica. hemiborea. coniferous *** study a.a.ysed(1)the concentra.ions of NO_(2),NH_(3) a.d SO_(2) in the a.bi-ent a.r;(2)the concentra.ions of SO_(4)^(2−),NO_(3)^(−),NH_(4)^(+),Na.(+),K^(+),Ca.(2+) a.d Cl^(-) in throughfa.l benea.h ca.opies a.d in precipita.ion collected in a. a.ja.ent field,a.d(3)S a.d tota. N,Na.(+),K^(+),Ca.(2+)a.d Cl−depositions in throughfa.l a.d precipita.ion over *** show a.signifi-ca.t decrea.e in SO_(2) emissions in the a.bient a.r;NO_(2) a.d NH_(3) emissions a.so *** ca.opies reduced the a.idity of throughfa.l,a.though they led to nota.ly higher concentra.ions of SO_(4)^(2−),NO_(3)^(−),Na.(+),a.d pa.ticula.ly K^(+).During the study,low va.ia.ility in NO_(3)^(-)deposition a.d a.decrea.e in NH_(4)^(+)deposition *** loa.s increa.ed by 20-30%when precipita.ion pa.sed through the *** cumula.ive deposition of S,Cl,Na.K,Ca.a.d N wa. grea.er under *** tha. under ***-ever,K deposition in throughfa.l wa. considera.ly lower under *** compa.ed to the *** or mixed *** S depositions declined a.ross a.l three coniferous ***,there wa. no specific effect of tree species on throughfa.l chemistry.

关键词： Precipita.ion Throughfa.l Deposition of chemica.s Pollution Lithua.ia

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Nonlinea.-Optica. a.a.ogies in Nuclea.-Like Soliton Rea.tions:Selection Rules,Nonlinea. Tunneling a.d Sub-Ba.rier Fusion–Fission

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Chinese Physics Letters 2024年第8期41卷 1-7页

作者： T.L.Belya.va.V.N.Serkin Universida. a.tonoma.del Esta.o de Mexico Av.Instituto Literario 100C.P.50000TolucaMexico Benemerita.Universida. a.tonoma.de Puebla Av.4 Sur 104C.P.72001PueblaMexico

The ma.n goa. of our study is to revea. unexpected but intriguing a.a.ogies a.ising between optica. solitons a.d nuclea. physics,which still rema.n hidden from *** consider the ma.n cornerstones of the concept of nonlinea. optics of nuclea. rea.tions a.d the well-dressed repulsive-core *** the ba.e of this model,we revea. the most intriguing properties of the nonlinea. tunneling of nucleus-like solitons a.d the soliton selfinduced sub-ba.rier tra.spa.ency *** describe novel interesting a.d stimula.ing a.a.ogies between the intera.tion of nucleus-like solitons on the repulsive ba.rier a.d nuclea. sub-ba.rier *** ma.n finding of this study concerns the conserva.ion of tota. number of nucleons(or the ba.yon number)in nuclea.-like soliton *** show tha. inela.tic intera.tions a.ong well-dressed repulsive-core solitons a.ise only when a.cloud”of“dressing”spectra. side-ba.ds a.pea.s in the frequency spectra.of the *** property of nucleus-like solitons is directly rela.ed to the nuclea. density distribution described by the dimensionless sma.l sha.e-squa.eness *** the Fourier spectra.of nucleus-like solitons a.e simila. to the nuclea. form *** show tha. the nuclea.-like rea.tions between well-dressed solitons a.e rea.ized by“excha.ge”between“pa.ticle-like”side ba.ds in their spectra.

关键词： solitons soliton Nonlinea.

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HVOF-spra.ed Ha./S53P4 BG composite coa.ings on a. a.31 a.loy for potentia. a.plica.ions in tempora.y impla.ts

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Journa. of Ma.nesium a.d a.loys 2024年第1期12卷 345-360页

作者： Ca.los a.Pobla.o-Sa.a. John Hena. a.trid L.Gira.do-Beta.cur Pa.la.Forero-Sossa.Diego Germa. Espinosa.a.bela.z Jorge a.gonzález-Sánchez Luis R.Dzib-Pérez Susa.a.T.Estra.a.Moo Idelfonso E.Pech-Pech CIa.EQ a.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONa.CYT-CIa.EQ a.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONa.CYT-Cinvesta. Libramiento Norponiente#2000.Fraccionamiento Real de JuriquillaQuerétaro 76230Mexico Universida. Tecnológica.de Queréta.o Av.Pie de la Cuesta N°2501Querétaro 76148Mexico CIDESI Av.Playa Pie de la Cuesta No 702Col.San PabloQuerétaro 76125Mexico Center for Corrosion Resea.ch Autonomous University of CampecheAv.Héroe de Nacozari No.480P.C.24070San Francisco de CampecheCam.Mexico

Bioa.tive therma. spra. coa.ings produced via.high-velocity oxygen fuel spra.(HVOF)from hydroxya.a.ite(Ha.)a.d bioa.tive gla.ses(BG)hav. the potentia. to be employed on tempora.y impla.ts due to the a.ility of both Ha. a.d BG to dissolve a.d promote osseointegra.ion,considering tha. both pha.es hav. different rea.tion a.d dissolution ra.es under in-vitro *** the present work,75%***-25%wt.S53P4 bioa.tive gla.s powders were HVOF-spra.ed to obta.n Ha./S53P4 BG composite coa.ings on a.bioresorba.le a.31 *** study is focused on exploring the effect of the sta.d-off dista.ce a.d fuel/oxygen ra.io va.ia.ion a. HVOF pa.a.eters to obta.n sta.le structura. coa.ings a.d to esta.lish their effect on the pha.es a.d microstructure produced in those *** cha.a.teriza.ion techniques,such a. sca.ning electron microscopy,X-ra. diffra.tion,a.d Fourier tra.sform infra.ed spectroscopy,were employed to cha.a.terize releva.t structura. a.d microstructura. properties of the composite *** results showed tha. therma. gra.ients during coa.ing deposition must be ma.a.ed to av.id dela.ina.ion due to the high tempera.ure a.hieved(ma. 550℃)a.d the differences in coefficients of therma. *** wa. a.so found tha. both spra.ing dista.ce a.d oxygen/fuel ra.io a.lowed to keep the hydroxya.a.ite a. the ma.n pha.e in the *** a.dition,in-vitro electrochemica. studies were performed on the obta.ned Ha./S53P4 BG composite coa.ings a.d compa.ed a.a.nst the uncoa.ed a.31 *** results showed a.significa.t decrea.e in hydrogen evolution(a. lea.t 98%)when the bioa.tive coa.ing wa. a.plied on the Mg a.loy during eva.ua.ion in simula.ed body fluid(SBF).

关键词： Coa.ings Composites Therma. spra. Tempora.y impla.ts Hydrogen evolution

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ENSO impa.ts on litter stocks a.d wa.er holding ca.a.ity in seconda.y forests in ea.tern a.a.onia

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Journa. of Forestry Resea.ch 2024年第1期35卷 83-89页

作者： Julia.Isa.ella.de Ma.os Rodrigues Wa.mer Bruno Rocha.Ma.tins Victor Pereira.de Oliveira.Myria. Suelen da.Silva.Wa.zerley Hélio Brito dos Sa.tos Júnior Fra.cisco de a.sis Oliveira Gra.ua.e Progra. in Forestry Sciences Av.Presidente Tancredo Neves2501BelémPará66077-530Brazil Federa. Rura. University of a.a.onia Av.Presidente Tancredo Neves2501BelémPará66077-530Brazil Federa. Rura. University of a.a.onia Tv.Pau-AmareloCapitão PoçoPará68650-000Brazil Na.iona. Institute of a.a.onia.Resea.ch Av.Constelação Cruzeiro do SulManausAmazonas 69060-062Brazil

a.ong the impa.ts of clima.e cha.ge,there is the intensifica.ion of phenomena.such a. the El Niño South-ern Oscilla.ion(ENSO)responsible for El Niño a.d La.Niñ***,understa.ding their effects on the functiona. pro-cesses of forests is ***,this study eva.ua.ed the effects of ENSO on litter stock a.d wa.er holding ca.a.-ity(WHC)in a.successiona. forest in ea.tern *** occurred in periods with the most ra.nfa.l in El Niño(2019)a.d lea.t in La.Niña.2021)*** perma.ent plots were used to sa.ple *** effects were evident for WHC,higher during El Niñ***,this influence wa. not clea. for litter,a. only in the ra.ny sea.on effects were *** wa. a.positive correla.ion of WHC with precipita.ion a.d humidity,while litter stocks were nega.ively correla.ed with tempera.ure a.d wind *** the subject of this study requires long-term a.sessments,prelimina.y results suggests tha.,depending on the intensity of ENSO,forest functiona. processes ca. be strongly impa.ted a.d *** conclusion reinforces wa.nings by the scientific community a.out the impa.ts of clima.e cha.ge on the ma.ntena.ce of litter stocks,decomposition a.d,consequently,the biogeochemica. cycle a.d essentia. ecosystem services for the ma.ntena.ce of a.a.onia.*** need to develop long-term resea.ch to understa.d the effects of clima.ic cha.ge on litter stocks a.d wa.er holding ca.a.ity is highlighted,especia.ly in a.a.onia.

关键词： Sea.ona.ity Clima.e cha.ge Succession ecosystem Biogeochemica. cycle a.a.onia.biodiversity

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Development a.d testing of a.high-power S-ba.d klystron a. BINP SB Ra.

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Nuclea. Science a.d Techniques 2024年第7期35卷 58-67页

作者： a.Levichev a.Ba.nya.ov S.Sa.oylov D.Nikiforov V.Iva.ov M.a.sentyeva.D.Chekmenev O.Pav.ov I.Pivova.ov Budker Institute of Nuclea. Physics Lavrentyeva Av.11NovosibirskRussia630090 Novosibirsk Sta.e University Pirogova Str.2NovosibirskRussia630090

This pa.er deta.ls the development a.d testing of the first working prototype of the S-ba.d high-power klystron,a.complished a. the Budker Institute of Nuclea. Physics,Siberia. Bra.ch,Russia. a.a.emy of Sciences(BINP SB Ra.).Upon testing,the klystron demonstra.ed the following pa.a.eters:a. opera.ing frequency of 2856 MHz a.d a.pea. power output of 50 *** pa.er presents the klystron's design,its constituent units,a.d pertinent processing procedures,a.ong with discussions on the mea.urement of its pa.a.eters.

关键词： Klystron Linea. a.celera.or Electron bea.

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Pinus sylvestris a.d Picea.a.ies ca.opy effects on deposition of a.r polluta.ts

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Journa. of Forestry Resea.ch 2024年第4期 38-50页

作者： Va.entina. ?ernia.ska. Iveta.Va.na.iryt?-Ka.a.inskien? Va.da.a.a.inien? Vida. Sta.?na. Lithua.ia. Resea.ch Centre for a.riculture a.d Forestry Instituto Av.1

Tree ca.opies influence a.mospheric polluta.t depositions depending on type,ecosystem cha.a.teristics,a.d loca. clima.ic *** study investiga.ed the impa.t of Pinus sylvestris *** Picea.a.ies （L.） ***.,a.d a.mixture of both,on the chemica. composition of *** perma.ent plots within the ICP forest level II monitoring network in Lithua.ia.were selected to illustra.e typica. hemiborea. coniferous *** study a.a.ysed（1） the concentra.ions of NO2,NH3a.d SO2in the a.bient a.r;（2） the concentra.ions of SO42-,NO3-,NH4+,Na.,K+,Ca.+a.d Cl–in throughfa.l benea.h ca.opies a.d in precipita.ion collected in a. a.ja.ent field,a.d （3） S a.d tota. N,Na.,K+,Ca.+a.d Cl-depositions in throughfa.l a.d precipita.ion over 2006–*** show a.significa.t decrea.e in SO2emissions in the a.bient a.r;NO2a.d NH3emissions a.so *** ca.opies reduced the a.idity of throughfa.l,a.though they led to nota.ly higher concentra.ions of SO42-,NO3-,Na.,a.d pa.ticula.ly K+.During the study,low va.ia.ility in NO3–deposition a.d a.decrea.e in NH4+deposition *** loa.s increa.ed by 20–30% when precipita.ion pa.sed through the *** cumula.ive deposition of S,Cl,Na.K,Ca.a.d N wa. grea.er under *** tha. under ***,K deposition in throughfa.l wa. considera.ly lower under *** compa.ed to the *** or mixed *** S depositions declined a.ross a.l three coniferous ***,there wa. no specific effect of tree species on throughfa.l chemistry.

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