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Preva.en.e of visua. impa.rmen. a.0} estima.ion.of refractive errors a.on. school children.in.Ka.a.ega.Ken.a

In.ern.tion.l Journ.l of Ophtha.mology(En.lish edition. 2024年第5期17卷 932-939页

作者： Isa.el Sign.s-Soler a.fred ragot Sheila. n.n.en. a.0}rew Wekesa.raúl Mon.a.bán.Lla.usí Depa.tmen. of Optics a.0} Optometry a.0} Vision.Scien.es Universidat de ValènciaBurjassotValencia 46010Spain n.O Vision.Without Borders(Visio Sen.e Fron.eres VSF)Calpe 03710AlicanteSpain Ma.in.e Muliro Un.versity of Scien.e a.0} Techn.logy P.O Box 190-50100KakamegaKenya Clin.ca.Ba.iera a.ica.0}e C/a.sóy Mon.ó 16Alicante 03006Spain

a.M:To in.estiga.e the preva.en.e of visua. impa.rmen.(VI)a.0} provide a.0}estima.ion.of un.orrected refractive errors in.school-a.ed children.con.ucted by optometry studen.s a. a.commun.ty ***:The study wa. *** 3343 pa.ticipa.0}s were in.luded in.the *** in.tia. exa.in.tion.in.olved a.sessin. the un.orrected dista.0}e visua. a.uity(UDVa.a.0} visua. a.uity(Va.while usin. a.2.00 D *** in.lusion.criteria.for a.subsequen. comprehen.ive cycloplegic eye exa.in.tion.performed by a.0}optometrist,were a. follows:a.UDVa.0.6 decima.(0.20 logMa.)a.0}/or a.Va.with+2.00 D≥0.8 decima.(0.96 logMa.).RESULTS:The sa.ple ha. a.mea.0}a.e of 10.92±2.13y(ran.e 4 to 17y),a.0} 51.3%of the children.were fema.e(n.1715).The ma.ority of the children.89.7%)fell within.the a.e ran.e of 8 to *** the ethn.c groups,the highest represen.a.ion.wa. from the Luhya.group(60.6%)followed by Luo(20.4%).Mea.0}logMa. UDVa.choosin. the best eye for ea.h studen. wa. 0.29±0.17(ran.e 1.70 to 0.22).Out of the tota.,246 pa.ticipa.0}s(7.4%)ha. a.full eye *** estima.ed preva.en.e of myopia.defin.d a. spherica. equiva.en.≤-0.5 D)wa. foun. to be 1.45%of the tota. *** a.oun. 0.18%of the tota. sa.ple ha. hyperopia.va.ue exceedin.+1.75 *** a.tigma.ism(cila. foun. in.0.21%(7/3343)of the *** VI preva.en.e wa. 1.26%of the tota. *** our ca.es of VI,76.2%could be a.tributed to un.orrected refractive *** wa. detected in.0.66%(22/3343)of the screen.d *** wa. n. sta.istica.ly sign.fica.0} correla.ion.observed between.a.e or gen.er a.0} refractive ***:The prima.y ca.se of VI is determin.d to be un.orrected refractive errors,with myopia.bein. the most preva.en. refractive error *** fin.in.s un.erscore the sign.fica.0}e of ea.ly iden.ifica.ion.a.0} correction.of refractive errors in.school-a.ed children.a. a.mea.0} to a.levia.e the impa.t of VI.

关键词： visua. impa.rmen. refractive errors myopia a.blyopia susta.n.ble developmen. goa.s

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Sodium-glucose cotran.porter-2 in.ibitors protect tissues via.cellula. a.1} mitochon.ria. pa.hwa.s:Experimen.a. a.1} clin.ca. eviden.e

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World Journ.l of Experimen.a. Medicin. 2024年第2期14卷 46-52页

作者： raúl Lelio Sa.1} Seba.tián.Ga.cía.Men.n.ez Felipe In.erra Leon.Ferder Wa.ter Ma.1}cha Depa.tmen. of Pa.hology Facultad de Ciencias MédicasUniversidad Nacional de CuyoMendoza 5500Argentina Depa.tmen. of Pha.ma.ology Instituto de Medicina y Biología Experimental de CuyoCentro Científico TecnológicoMendoza 5500Argentina Depa.tmen. of n.phrology Universidad de MaimónidesCiudad Autónoma de Buenos Aires C1405Argentina Depa.tmen. of Ca.diology Universidad de MaimónidesCiudad Autónoma de Buenos Aires C1405Argentina

Mitochon.ria. dysfun.tion.is a.key driver of ca.diova.cula. disea.e(CVD)in.meta.olic syn.rome a.0} *** dysfun.tion.promotes the production.of rea.tive oxygen.species(ROS),which ca.se oxida.ive stress a.0} *** II,the ma.n.media.or of the ren.n.a.0}ioten.in.a.dosteron. system,a.so con.ributes to CVD by promotin. ROS *** a.tivity of sirtuin.(SIRTs),a.fa.ily of protein. tha. regula.e cellula. meta.olism,a.so worsen. oxida.ive *** of en.rgy production.by mitochon.ria.is a.common.fea.ure of a.l meta.olic *** SIRT levels a.0} 5’a.en.sin. mon.phospha.e-a.tiva.ed protein.kin.se sign.lin. stimula.e hypoxia.in.ucible fa.tor 1 beta.which promotes ***,in.turn.in.rea.es a.topha.y a.0} mitopha.y,processes tha. clea. cells of debris a.0} protect a.a.n.t *** cotran.porter-2 in.ibitors(SGLT2i),a.cla.s of drugs used to trea. type 2 dia.etes,ha.e a.ben.ficia. effect on.these *** clin.ca. tria.s ha.e shown.tha. SGLT2i improves ca.dia. fun.tion.a.0} reduces the rate of ca.diova.cula. a.0} ren.l ***2i a.so in.rea.e mitochon.ria. efficien.y,reduce oxida.ive stress a.0} in.la.ma.ion.a.0} stren.then.*** fin.in.s suggest tha. SGLT2i hold grea. poten.ia. for the trea.men. of ***,they a.e proposed a. a.0}i-a.in. drugs;however,rigorous resea.ch is n.eded to va.ida.e these prelimin.ry fin.in.s.

关键词： Sodium-glucose cotran.porter-2 in.ibitors Ca.diova.cula. disea.es Sirtuin. Oxida.ive stress In.la.ma.ion Mitochon.ria. dysfun.tion

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Impa.ts of brood pa.0}sitism by shin. cowbird Molothrus bon.rien.is on.the breedin. success of a.sma.l host, the bla.k-ba.ked wa.er tyran. Fluvicola.a.biven.er

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Curren. Zoology 2024年第4期70卷 539-547页

作者： Loren. Va.0}sa.Sovran. Evelin. Jesica.Leon.Rodrigo Ezequiel Loren.ón.Pa.ela.Fern.n.a.Olguin.a.olfo Héctor Beltzer a.eja.0}ro raúl Giraudo La.oratorio de Biodiversida. y Con.erva.ion.de Tetrapodos Instituto Nacional de Limnologia(INALICONICET-UNL)Paraje El Pozo s/nSanta Fe(3000)Argentina Depa.ta.en.o de Biologia Universidad Autonoma de Entre RiosKm 10.5 RP 11Oro Verde(3100)Entre RiosArgentina Depa.ta.en.o de Biologia Universidad Nacional del LitoralFacultad de Humanidades y CienciasParaje Ei Pozo s/nSanta Fe(3000)Argentina

The shin. cowbird Molothrus bon.rien.is pa.3}sitizes ma.0} species with differen. life-history traits a.0} ha. a.detrimen.a. effect on.the surviva. of the progen. of the *** respon.e,hosts ha.e developed n.merous a.0}ipa.3}sitic ***,we exa.in.d the effects of brood pa.3}sitism by shin. cowbird on.the clutch a.0} brood sizes(83 n.sts)in.a.sma.l host,the bla.k-ba.ked wa.er tyran. Fluvicola.*** a.so studied whether the dea.h of pa.3}site n.stlin.s wa. rela.ed to the ca.e of the foster pa.en.s a.0} whether the host ha. a.0} a.0}ipa.3}sitic defen.e a.a.n.t the shin. *** results in.ica.e tha. brood pa.3}sitism sign.fica.0}ly decrea.ed the host ha.chin. a.0} fledgin. *** ma.ority of n.st fa.lures(57%)were ca.sed by brood *** cowbird pa.3}sitism occurred in.52%of n.sts a.0} the in.en.ity of pa.3}sitism wa. 1.23±0.53 eggs per pa.3}sitized *** the tota. host eggs,54%were *** the in.uba.ion.sta.e,20 n.sts(47%)were a.a.0}on.d beca.se of egg pun.tures by shin. cowbirds *** two pa.3}sitic fledglin.s were recorded,while the rema.n.n. n.stlin.s either died from sta.va.ion.n.12)or preda.ion.n.3).Foster pa.en.s a.a.0}on.d pa.3}sitic n.stlin.s between.5 a.0} 10 da.s *** fin.in.s demon.trate tha. the shin. cowbird ha. very low rates of fledgin. success when.pa.3}sitizin. bla.k-ba.ked wa.er ***,pa.3}sitism ha. a.high reproductive cost in.the bla.k-ba.ked wa.er tyran. beca.se a.very low proportion.7%)of the pa.3}sitized n.sts(n.43)were successful.

关键词： brood pa.0}sitism host defen.es n.st desertion shin. cowbird sma.l host.

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Improvin. the radiologica. dia.n.sis of hepa.ic a.tery thrombosis a.ter liver tran.pla.0}a.ion. Curren. a.proa.hes a.0} future cha.len.es

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World Journ.l of Tran.pla.0}a.ion 2024年第1期14卷 1-8页

作者： Cristia.0}Lin.n.r raúl Riquelme Rodrigo Sa.0}Ma.tín.Fran. Queza.a.Jorge Va.en.uela.Jua.0}P Ma.reira Ma.tín.Ein.rsen Depa.tmen. of radiology Faculty of MedicineUniversity of ConcepciónConcepción 4030000Chile Depa.tmen. of radiology Hospital Clínico Regional Guillermo Grant BenaventeConcepción 4030000Chile Depa.tmen. of Sta.istics Catholic University of MauleTalca 3460000Chile n.urova.cula. Un.t Department of RadiologyHospital Clínico Regional Guillermo Grant BenaventeConcepción 4030000Chile

Hepa.ic a.tery thrombosis(Ha.)is a.deva.ta.in. va.cula. complica.ion.followin. liver tran.pla.0}a.ion.requirin. prompt dia.n.sis a.0} rapid reva.cula.iza.ion.trea.men. to preven. graft *** presen.,ima.in. moda.ities such a. ultrasoun.,computed tomography,a.0} ma.n.tic reson.n.e pla. crucia. roles in.dia.n.sin. *** ima.in. techn.ques ha.e improved sen.itivity a.0} specificity for Ha. dia.n.sis,they ha.e limita.ion. tha. hin.er the timely dia.n.sis of this *** this sen.e,the emergen.e of a.tificia. in.elligen.e(a.)presen.s a.tran.forma.ive opportun.ty to a.dress these dia.n.stic *** developmen. of ma.hin. lea.n.n. a.gorithms a.0} deep n.ural n.tworks ha. demon.trated the poten.ia. to en.a.0}e the precision.dia.n.sis of liver tran.pla.0} complica.ion.,en.blin. quicker a.0} more a.curate detection.of *** a.ticle exa.in.s the curren. la.0}sca.e of ima.in. dia.n.stic techn.ques for Ha. a.0} explores the emergin. role of a. in.a.dressin. future cha.len.es in.the dia.n.sis of Ha. a.ter liver tran.pla.0}.

关键词： Liver tran.pla.1}a.ion Postoperative complica.ion. Hepa.ic a.tery Thrombosis radiology a.tificia. in.elligen.e

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Vegeta.ion.Respon.e To Soil a.0} Morphologica. Properties In.a.0}a.id Region.a.luvia. Fa.0}La.0}sca.e. Pre-a.0}es Of Sa.0}Jua.0} a.gen.in.

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Journ.l of Ea.th Scien.e 2024年

作者： FLORES Da.0}el Germán.OCa.a.raúl Emma.0}el MELIán.Edga.do ORTEG a.0}rés ESPER a.0}ILLIERI Ma.ía.ya.0}n. PITTa.UGa.Ma.ía.a.eja.0}ra CIGEOBIO (COn.CET-Un.J) a..José I.de la.Roza.y Meglioli Ga.in.te de Geología.a.bien.a.， In.EO， Un.versida. n.cion.l de Sa.0}Jua.0} a..José I.de la.Roza.y Meglioli

The Mon.e Desert is cha.1}cterized by a.grea. diversity of la.0}forms crea.ed with fluvia.， a.luvia. which the vegeta.ion.pa.tern. a.e rela.ed to. The presen. work ha. the followin. objectives: 1: determin. whether topographica. a.tributes， surfa.e cha.1}cteristics， soil properties a.0} vegeta.ion.pa.tern. va.y between.a.luvia. la.0}forms， a.0} 2: defin. whether morphometric， soil a.0} surfa.e properties in.luen.e vegeta.ion.pa.tern. a.on. a.luvia. la.0}sca.e. Morphometric da.a.were obta.n.d by processin. a.5 m digita. eleva.ion.model. The coverage of rock fragmen.s， fin. sedimen.s a.0} mulch wa. qua.0}ified. Observa.ion. a.0} description. of the soil profiles were restricted to the uppermost 50 cm. Vegeta.ion.properties were ca.cula.ed usin. a.Poin. Qua.rat Method. The rela.ion.hip between.va.ia.les wa. eva.ua.ed through multiva.ia.e sta.istica. a.0}lysis. The ma.n.results show the presen.e of 45 pla.0} species distributed in.19 fa.ilies， where shrubs a.e domin.n.. The win. effect， topographic wetn.ss a.0} dissection.of the la.0}sca.e a.e limitin. fa.tors of diversity. The coverage of superficia. rock fragmen.s in.luen.e vegeta.ion.coverage through the distribution.a.0} a.a.la.ility of rain.a.er. Furthermore， the differen. soil textures revea. tha. the silt con.en. fa.ors a.0}in.rea.e in.vegeta.ion.coverage. The presen.e of V horizon.could con.ition.the in.ta.la.ion.a.0} developmen. of vegeta.ion.in.the ea.ly sta.es of growth.

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Ha.d life for son. in.the n.st?Sex-depen.en. offsprin. morta.ity in.Grea. Tits in.urba.0}a.0} forest a.ea.

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a.ia.0}Resea.ch 2024年第1期15卷 91-97页

作者： n.ra a.h Hen.iett a.0}a.Da.vári Krisztián.Sza.ó Ivett Pipoly a.0}rás Liker HUn.REn.PE Evolution.ry Ecology Resea.ch Group University of PannoniaH-8200VeszpremPf.1158.Hungary Beha.ioral Ecology Resea.ch Group Center for Natural SciencesUniversity of PannoniaH-8200Pf.1158.VeszpremHungary Molecula. Ecology Resea.ch Group Department of EcologyUniversity of Veterinary Medicine BudapestH-1400Pf.2.BudapestHungary Syn.a. Hun.a.y Ltd. H-1211Weiss Manfr´ed Str.5-7BudapestHungary

Sex-bia.ed morta.ity ca.0}occur in.birds durin. developmen.,for exa.ple due to sexua. differen.es in.en.rgy requiremen. a.0}/or en.iron.en.a. sen.itivity,or the effects of sex hormon.s or sex differen.es in.the expression.of muta.ion. lin.ed to sex *** exten. of sex-bia. in.morta.ity ma. a.so be rela.ed to en.iron.en.a. con.ition. tha. in.luen.e offsprin. developmen. a.0} *** a.ea. often.provide poorer con.ition. for n.stlin. developmen. resultin. in.higher offsprin. morta.ity compa.ed to n.tural a.ea.,which ma. a.celerate sex differen.es in.offsprin. morta.ity in.*** test this hypothesis,we exa.in.d the sex ratio of dea. offsprin. in.Grea. Tits(Pa.us ma.or),usin. 427 sa.ples of un.a.ched eggs a.0} dea. n.stlin.s collected in.two urba.0}a.0} two forest sites between.2013 a.0} *** ratio of ma.es in.the whole sa.ple of dea. offsprin.(56.9%)wa. sign.fica.0}ly higher tha.0}expected by a.0}1:1 ratio,a.0} the stron.est sex bia.es were detected in.urba.0}a.ea.(57.6%ma.es)a.0} in.youn. n.stlin.s(a.s old,59.0%ma.es).However,the sex ratios of dea. offsprin. did n.t differ sign.fica.0}ly a.on. study sites a.0} between.offsprin. developmen.a. sta.es.29.3%of un.a.ched eggs con.a.n.d a.visible embryo,a.0} the proportion.of embryo-con.a.n.n. un.a.ched eggs did n.t differ sign.fica.0}ly between.urba.0}a.0} forest study *** results suggest ma.e-bia.ed offsprin. morta.ity in.Grea. Tits,a.0} highlight the n.ed of la.ge da.a.ets to detect subtle differen.es between.ha.ita.s a.0} developmen.a. sta.es.

关键词： Grea. Tit Urba.0}za.ion n.stlin. morta.ity Sex rela.ed differen.es

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Distin.t Electrica. a.0} Mecha.0}ca. Respon.es of a.Cu-10Fe Composite Prepa.ed by Hot-Pressed Sin.erin. a.0} Post Trea.men.

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a.ta.Meta.lurgica.Sin.ca.En.lish Letters) 2024年第2期37卷 255-265页

作者： X.y.yue S.y.Pen. X.Zha.0} C.n.He y.Z.Tia. Key La.oratory for a.1}sotropy a.1} Texture of Ma.eria.s(Min.stry of Educa.ion. School of Materials Science and EngineeringNortheastern UniversityShenyang110819China School of Ma.eria.s Scien.e a.0} En.in.erin. a.0} Tia.0}in.Key La.oratory of Composite a.0} Fun.tion.l Ma.eria.s Tianjin UniversityTianjin300350China Resea.ch Cen.re for Meta.lic Wires Northeastern UniversityShenyang110819China

a.Cu-10wt%Fe composite wa. prepa.ed through hot-pressed sin.erin.,a.0} the ma.eria. wa. subsequen.ly solution.*** hot-pressed sin.ered a.0} solution.trea.ed ma.eria.s were rolled a.0} *** precipita.ion.beha.ior a.0} performa.0}e cha.0}es were systema.ica.ly studied by usin. sca.0}in. electron.microscopy a.0} tran.mission.electron.*** con.rast to the hot-pressed sin.ered specimen.the solution.trea.men. sign.fica.0}ly a.fects the therma. sta.ility a.0} properties of the Cu-10wt%Fe *** Cu-10wt%Fe composite wa. prepa.ed a.ter solid solution.cold rollin. a.0} a.in. a. 773 K for 1 h,a.0} it obta.n.d excellen. ten.ile stren.th of 494 MPa.un.form elon.a.ion.of 16.3%,electrica. con.uctivity of 51.1%Ia.S a.0} soften.n. temperature of 838 *** for the distin.t differen.e in.therma. sta.ility a.0} properties between.hot-pressed sin.ered a.0} solution.trea.ed specimen. were *** fin.in.s provide a.theoretica. ba.is for design.n. high-performa.0}e Cu-ba.ed in.situ composites by post trea.men..

关键词： Cu-Fe composite Hot-pressed sin.erin. Therma. sta.ility Stren.th Electrica. con.uctivity

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In.lusion.of CoTiO_(3) to a.eliorate the re/dehydrogen.tion.properties of the Mg–n.–a. system

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Journ.l of Ma.n.sium a.0} a.loys 2024年第3期12卷 1215-1226页

作者： n.a.a.i n.y.yusn.za. n.a.Sa.4}lee Sa.i-ulla. rather Ha.zhen.Liu M.Isma.l En.rgy Storage Resea.ch Group Faculty of Ocean Engineering TechnologyUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Depa.tmen. of Chemica. a.0} Ma.eria.s En.in.erin. King Abdulaziz UniversityP.O.Box80204Jeddah 21589Saudi Arabia Gua.0}xi n.vel Ba.tery Ma.eria.s Resea.ch Cen.er of En.in.erin. Techn.logy School of Physical Science and TechnologyGuangxi UniversityNanning 530004China Sta.e Key La.oratory of Fea.ured Meta. Ma.eria.s a.1} Life-Cycle Sa.ety for Composite Structures Nanning 530004China

For the first time,the MgH_(2)–n.a.H_(4)(ratio 4:1)desta.ilized system with CoTiO_(3) a.dition.ha. been.*** CoTiO_(3)-doped MgH_(2)–n.a.H_(4) sa.ple begin. to dehydrogen.te a. 130℃,which is declin.d by 40℃ compa.ed to the un.oped MgH_(2)–n.a.H_(4).Moreover,the de/rehydrogen.tion.kin.tics cha.1}cteristics of the CoTiO_(3)-doped MgH_(2)–n.a.H_(4) were grea.ly *** the in.lusion.of CoTiO_(3),the MgH_(2)–n.a.H_(4) composite a.sorbed 5.2 wt.%H_(2),higher tha.0}un.oped MgH_(2)–n.a.H_(4).In.the con.ext of dehydrogen.tion.the CoTiO_(3)-doped MgH_(2)–n.a.H_(4) sa.ple desorbed 2.6 wt.%H_(2),a.most doubled compa.ed to the a.oun. of hydrogen.desorbed from the un.oped MgH_(2)–n.a.H_(4) *** a.tiva.ion.en.rgy obta.n.d by the Kissin.er a.0}lysis for MgH_(2) decomposition.wa. sign.fica.0}ly lower by 35.9 kJ/mol tha.0}the un.oped MgH_(2)–n.a.H_(4) *** rea.tion.mecha.0}sm demon.trated tha. n.w pha.es of MgCo a.0} a.Ti_(3) were gen.rated in.situ durin. the hea.in. process a.0} a.e likely to pla. a.substa.0}ia. ca.a.ytic fun.tion.a.0} be useful in.a.elioratin. the de/rehydrogen.tion.properties of the desta.ilized MgH_(2)–n.a.H_(4) system with the in.lusion.of CoTiO_(3).

关键词： Desta.ilize system Ma.n.sium hydride Sodium a.a.0}te Hydrogen.storage a.ditive.

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In.luen.e of bioma.s burn.n. on.ozon. levels in.the Mega.opolis of Cen.ral Mexico durin. the COVID-19 lockdown

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Journ.l of En.iron.en.a. Scien.es 2024年第9期143卷 99-115页

作者： Victor a.ma.0}a.Luis Gerardo Ruiz-Suárez Rica.do Torres-Ja.dón.a.ustín.Ga.cía.Reyn.so Iván.y.Hern.n.ez-Pa.0}a.ua In.titute for a.mospheric Scien.es a.0} Clima.e Cha.0}e National Autonomous University of MexicoCoyoacan 04510Mexico CityMexico

The ma.sive reduction. in.a.0}hropogen.c emission. resultin. from the COVID-19 lockdown.provided a.un.que opportun.ty to eva.ua.e the effect of mitiga.ion.mea.ures a.min. to a.a.e a.r *** Mexico,the tota. lockdown.period took pla.e durin. the dry-hot sea.on.when.bioma.s burn.n. a.tivity is ***,we in.estiga.e the role of bioma.s burn.n. emission. on.region.l ozon. levels in.the Mega.opolis of Cen.ral *** studied period covers the lockdown.pha.es 2 a.0} 3,a.0} the first mon.h of the n.w *** a.plied a.fa.tor sepa.26}tion.techn.que a.0} process a.0}lysis to estima.e the pure a.0} syn.rgistic con.ribution. of emission.reduction. un.er lockdown.a.0} tha. from bioma.s burn.n. to da.ly ozon. ma.imum con.en.ration. in.7 metropolita.0}a.ea. of differen. sta.es in.the *** results revea.ed tha. bioma.s burn.n. plumes likely ma.ked the effect of ma.sive reduction. from mobile emission.,impa.ted the PBL developmen. durin. pha.e 3 a.0} fa.ored tran.ition.a.0} mixed n._(x)-limited a.0} VOC-limited region.l *** con.ributed to in.rea.ed ozon. production.in.the middle to lower PBL by cha.0}in. the region.l ba.kgroun. levels which poten.ia.ly could bia. high ozon. production.efficien.y *** the Mega.opolis con.ribution.to econ.mic a.0} societa. developmen. a. n.tion.l sca.e,our study suggests tha. ozon. mitiga.ion.mea.ures durin. the dry-hot sea.on.ta.getin. ma.n.y mobile emission. will likely be offset by bioma.s burn.n. plumes.a.region.l a.0} syn.rgic policy a.min. to con.rol bioma.s burn.n. would help to reduce the occurren.e of high ozon. levels in.Cen.ral Mexico with the co-ben.fit of ta.klin. short-lived clima.e polluta.0}s.

关键词： COVID-19 Mexico Mega.opolis Ozon. Fa.tor Sepa.0}tion Process a.0}lysis

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Effect of a._(2)O_(3)on.the Mecha.0}ca. Properties of(B_(4)C+a._(2)O_(3))/a. n.utron.a.sorbin. Ma.eria.s

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a.ta.Meta.lurgica.Sin.ca.En.lish Letters) 2024年第8期37卷 1411-1420页

作者： J.X.Ca. B.M.Shi n.Li y.Liu Z.G.Zha.0} y.n.Za.0}Q.Z.Wa.0} B.L.Xia. Z.y.Ma Shi‑Cha.0}xu In.ova.ion.Cen.er for a.va.0}ed Ma.eria.s Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Key La.oratory of n.clea. Ma.eria.s a.1} Sa.ety a.sessmen. Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China n.clea. Equipmen. Division Beijing Institute of Nuclear EngineeringChina Nuclear Power Engineering Co.Ltd.Beijing 100840China Depa.tmen. of Ma.eria.s Scien.e School of Mechanical EngineeringShenyang UniversityShenyang 110044China

B_(4)C/a. composites a.e widely utilized a. n.utron.a.sorbin. ma.eria.s for the storage a.1} tran.porta.ion.of spen. n.clea. *** order to improve the high-temperature mecha.1}ca. properties of B_(4)C/a. composites,in.situ n.n.-a._(2)O_(3)wa. in.roduced utilizin. oxide on.a. powder *** this study,the a._(2)O_(3)con.en. wa. a.justed by utilizin. spheroid a. powder with va.yin. dia.eters,thereby in.estiga.in. the impa.t of a._(2)O_(3)con.en. on.the ten.ile properties of(B_(4)C+a._(2)O_(3))/a. *** wa. foun. tha. the pin.in. effect of a._(2)O_(3)on.the grain.boun.a.ies could hin.er the recovery of disloca.ion. a.1} lea. to disloca.ion.a.cumula.ion.a. high *** the result,with the in.rea.e in.a._(2)O_(3)con.en. a.1} the decrea.e in.grain.size,the high-temperature stren.th of the composites in.rea.ed *** fin.st a. powder used in.this in.estiga.ion.ha. a.dia.eter of 1.4μm,wherea. the resulta.1} composite exhibited a.ma.imum stren.th of 251 MPa.a. room temperature a.1} 133 MPa.a. 350℃,surpa.sin. tha. of tradition.l B_(4)C/a. composites.

关键词： a. ma.rix composites n.utron.a.sorbin. ma.eria.s (B_(4)C+a._(2)O_(3))/a. composites High-temperature stren.th

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