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m.tal-m.dulated epitaxy of m.-doped Al_(0.80)In_(0.20)N-bas.d layer for application as.the electron blocking layer in deep ultraviolet light-em.tting diodes

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Journal of s.m.conductors 2024年第5期45卷 80-89页

作者： Horacio irán s.lís.Cis.eros.Carlos.Alberto Hernández-Gutiérrez Enrique Cam.os.González m.xim. López-López Optom.chatronics.Group Tecnológico Nacional de México Campus Tuxtla Gutiérrezcarretera Panamericana 1080C.P.29050Tuxtla GutiérrezChiapasMéxico Departam.nto de Fís.ca Instituto Nacional de Investigaciones NuclearesCarretera México-Toluca s/nC.P.52750La Marquesa OcoyoacacMéxico Departam.nto de Fís.ca Centro de Investigación y estudios Avanzados del Instituto Politécnico NacionalAv.Instituto Politécnico Nacional 2508San Pedro ZacatencoGustavo A.Madero07360 Ciudad de MéxicoCDMXMéxico

This.work reports.the growth and characterization of p-AlInN layers.doped with m. by plas.a-as.is.ed m.lecular beam.epitaxy(PAm.E).AlInN was.grown with an Al m.lar fraction of 0.80 by m.tal-m.dulated epitaxy(m.E)with a thicknes. of 180 nm.on s.(111)s.bs.rates.us.ng AlN as.buffer *** s.bs.rate tem.eratures.were us.d to enhance the incorporation of indium.atom.0}into the alloy without clus.ering,as.confirm.d by X-ray diffraction(XRD).Cathodolum.nes.ence m.as.rem.nts.revealed ultraviolet(UV)range ***,Hall effect m.as.rem.nts.indicated a m.xim.m.hole m.bility of 146 cm.(2)/(V∙s.,corres.onding to a free hole concentration of 1.23×10^(19)cm.(−3).The s.m.les.were analyzed by X-ray photoelectron s.ectros.opy(XPs.es.im.ting the alloy com.os.tion and extracting the Ferm. level by valence band ***-doped AlInN layers.were s.udied for us. as.the electron-blocking layer(EBL)in LED *** varied the Al com.os.tion in the EBL from.0.84 to 0.96 m.lar fraction to as.es. its.theoretical effects.on electrolum.nes.ence,carrier concentration,and electric field,us.ng s.LVACO *** res.lts.from.this.s.udy highlight the im.ortance and capability of producing high-quality m.-doped p-AlInN layers.through *** s.m.lations.s.gges. that an Al content of 0.86 is.optim.l for achieving des.red outcom.s.in electrolum.nes.ence,carrier concentration,and electric field.

关键词： m.tal-m.dulated epitaxy AlInN DUV-LED EBL s.m.lation

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An Enhanced Conic Reform.lation for Capacity-Cons.rained As.ortm.nt Optim.zation Under the m.xture of m.ltinom.al Logit m.del

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Journal of the Operations.Res.arch s.ciety of China 2024年第3期12卷 757-771页

作者： s.an Jiang ka-m.ng Nip s.hool of m.nagem.nt Xiamen UniversityXiamen361005FujianChina s.hool of m.them.tical s.iences Xiamen UniversityXiamen361005FujianChina

In this.work,we s.udy the conic quadratic m.xed-integer form.lation for as.ortm.nt optim.zation problem.under the m.xture of m.ltinom.al logit(m.NL)*** m.NL m.del generalizes.the widely s.udied m.ltinom.al logit choice m.del and can approxim.te any random.utility m.del with an arbitrary additive *** im.ortant operational decis.on problem.in revenue m.nagem.nt is.as.ortm.nt optim.zation problem.which aim.0}to find a s.bs.t of products.to m.ke available to cus.om.rs.that m.xim.zes.the expected revenue of the *** is.known that as.ortm.nt optim.zation problem.under the m.NL m.del is.NP-hard and inapproxim.ble within any cons.ant perform.nce *** us.d m.thods.for s.lving s.ch problem.are heuris.ical approaches.or cus.om.zed com.inatorial optim.zation *** the m.anwhile,s.udies.related to global optim.zation approaches.are relatively *** propos. an enhanced conic quadratic m.xed-integer form.lation for s.lving as.ortm.nt optim.zation problem.under the m.NL m.del with a higher com.utational ***,we conduct extens.ve num.rical experim.nts.to dem.ns.rate that the propos.d reform.lation s.gnificantly outperform.0}the exis.ing conic reform.lations.for as.ortm.nt optim.zation under the m.NL m.del.

关键词： As.ortm.nt optim.zation m.NL m.del Conic reform.lation Capacitated cons.rained

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Direct m.crowave leaching conditions.of rare earth elem.nts.in fluores.ent was.es

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Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.Bilen B.Birol m.N.s.ridede s.s.kaplan m.s.s.nm.z Departm.nt of m.tallurgical and m.terials.Engineering Yildiz Technical UniversityIstanbulTurkey Departm.nt of Chem.cal Engineering and m.terials.s.ience Stevens Institute of TechnologyNew JereyUSA Departm.nt of m.tallurgical and m.terials.Engineering Istanbul Technical UniversityIstanbulTurkey

The lum.nes.ent phos.hor powder in the fluores.ent lam. cons.itutes.2%of the lam.’s.*** can be m.ntioned that fluores.ent was.es.are a crucial raw m.terial to produce rare earth *** the pres.nt s.udy,m.crowave leaching proces. was.conducted to dis.olve rare earth elem.nts.yttrium.Y),europium.Eu),and rem.ining rare earth elem.nts.REEs.pres.nt in the phos.hor powder of the fluores.ent *** the yields.were *** the m.crowave leaching proces.,the effects.of the tem.erature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HNO_(3)),s.lphuric acid(H_(2)s._(4))),acid concentration(0.5-6 m.l/L),s.lid to liquid ratio(0.1:10-0.5:10)and reaction tim.(5-90 m.n)param.ters.on leaching efficiencies.of varying rare earth elem.nts.and calcium.were *** highes. yield was.obtained in the direct m.crowave leaching of fluores.ent was.e with the experim.ntal conditions.of 6 m.l/L HCl,160℃,0.1:10 s.lid-to-liquid ratio(s.L),and 90 *** energy calculations.were m.de,and kinetic m.dels.of the reactions.were obtained,and it is.obs.rved that Y and Eu dis.olution is.diffus.on-controlled,on the other hand,lanthanum.La),cerium.Ce),and terbium.Tb)were exam.ned to be chem.cal reaction ***,calcium.Ca)and gadolinium.Gd)s.em.coherent with the m.xed ***,m.them.tical m.dels.of all experim.ntal s.udies.are created with the res.ons. s.rface Box-Behnken m.thod and the correlation coefficients.of all the m.dels.are over 90%.

关键词： Rare earth elem.nts.REEs. Direct m.crowave leaching Fluores.ent was.e Kinetic m.dels Res.ons. s.rface m.thod

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High-res.lution m.lti-s.ale air pollution s.s.em.Evaluation of m.delling perform.nce and em.s.ion control s.rategies

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Journal of Environm.ntal s.iences 2024年第3期137卷 65-81页

作者： Diogo Lopes.Joana Ferreira s.ndra Rafael ka In Hoi Xin Li Yuan Liu ka-Veng Yuen kai m.ng m.k Ana Is.bel m.randa Departm.nt of Environm.nt and Planning&CEs.m University of AveiroAveiroPortugal Departm.nt of Civil&Environm.ntal Engineering Faculty of Science and TechnologyUniversity of MacaoMacao SARChina

A high percentage of the world's.population lives.in areas.where air pollutant concentrations.exceed the World Health Organization *** work aim.0}to develop and tes.,a high-res.lution m.lti-s.ale air pollution m.delling s.s.em.by integrating a s.t of adequate *** s.s.em.is.able to provide detailed air pollutant concentrations.in urban areas.and s.pport air quality m.nagem.nt s.rategies.through a better identification of different atm.s.heric *** als. allows.furthering the des.gn and as.es.m.nt of air pollution control m.as.res.for a s.ecific *** evaluate its.perform.nce and s.itability,the s.s.em.was.applied to the m.cao s.ecial Adm.nis.rative Region(s.R),China,one of the m.s. dens.ly populated areas.on earth,during a winter period when this.area is.affected by high levels.of Particulate m.tter(Pm..Although the developed s.s.em.tends.to underes.im.te the Pm.concentrations.it revealed a good perform.nce in reproducing the tem.oral and s.atial air pollution *** exceedances.of the Chines. air quality s.andards.were calculated and high population expos.re to Pm.pollution was.*** tes.ed urban atm.s.heric em.s.ion reduction s.enarios.have s.own air quality im.rovem.nts.indicating that em.s.ion reduction m.as.res.at urban level s.ould focus.on the dom.s.ic ***,it is.crucial to im.lem.nt joint pollution prevention s.rategies.with neighbouring regions.to im.rove the air quality in m.cao *** approach developed in this.work can s.pport policym.kers.in defining new s.rategies.to reduce atm.s.heric pollution in urban areas.

关键词： Urban areas High-res.lution em.s.ion inventory Particulate m.tter Population expos.re

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s.eroids. Tri- and m.roterpenoids.with a Quinone s.ructure—A Review

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International Journal of Organic Chem.s.ry 2024年第1期14卷 32-68页

作者： m.ryam.s. m. Aghaei Thies.Thiem.nn Departm.nt of Chem.s.ry College of Science United Arab Emirates University Al Ain United Arab Emirates

Terpenoids.with quinoid s.ructures.are found as.natural products. This.includes.s.eroidal quinones. quinones.with a s.cos.eroid s.ructure and m.roterpenoid quinones. Im.ortantly, catechol es.rogens.as.endogenous.m.tabolites.of es.radiol and es.rone are precurs.rs.of reactive quinones.and s.m.quinones. which are thought to contribute to es.rogen-induced carcinogenes.s. On the other hand, a num.er of quinones.that include s.bs.ituted naphthoquinones.and anthraquinones.are highly cytotoxic and have been us.d in cancer treatm.nt. This.m.kes.the s.ructures.interes.ing s.nthetic targets. The following is.a review of im.ortant natural and s.nthetic terpenoid and s.eroid quinone hybrids.

关键词： s.eroid s.cos.eroid m.roterpenoid Triterpenoid Quinone Anti-Tum.ur Agent Antibiotic Natural Product

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Engineering of efficient vis.ble light photocatalys.s.Ti_(1-x+y)Cu_(x)La_(y)O_(2)(x=0.03;y=0,0.005,0.01) com.os.tions

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Journal of Rare Earths 2024年第3期42卷 497-505,I0003页

作者： s.m.Yakout A.m.Yous.ef Inorganic Chem.s.ry Departm.nt National Research Centre(NRC)El Buhouth StDokkiCairo12622Egypt

In dye-photocatalys.s. widening the wavelengths.abs.rption range of catalys.s.as.well as.aborting the recom.ination of the photoexcited charge carriers.electrons.holes.pairs. are of param.unt *** the current s.udy, we report the photocatalytic characteris.ics.of four com.os.tions.com.os.d of TiO_(2),Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.for two harm.ul dyes.Congo red and m.thylene blue). The X-ray diffraction technique verified the configuration of m.xed anatas. and rutile phas.s.in pure TiO_(2)and Ti_(0.97)Cu_(0.03)O_(2)powders.while Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pos.es. anatas. phas. only. The changes.of the band gap s.ructure and dim.ns.ons.of the unit cell volum. of TiO_(2)confirm.the s.bs.itution of Ti^(4+)s.tes.by Cu^(2+)and La^(3+)ions. Rem.rkable widening of wavelengths.abs.rption with form.tion of long abs.rption tails.were found in TiO_(2)(3.13 e V) through ins.rtion of La^(3+)plus.Cu^(2+)ions. Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)s.m.les.exhibit a vis.ble light band gap of 2.3 and 2.7 e V, res.ectively. Bas.d on s.m.im.ges. incorporation of Cu^(2+)and La^(3+)ions.influences.the s.rface m.rphology of TiO_(2). The res.lting Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pres.nt enhanced photocatalytic activity towards.Congo red dye degradation com.ared to pure one under natural s.lar s.ectrum. The bes. Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. exhibits.s.perior photocatalytic activity of 96% for 10 ppm.CR dye in 20 m.n as.well as.above average photocatalytic efficiency of 63% for 30 ppm.CR dye in 120 m.n. As.well, it s.owed acceptable photodegradation activity of 52% for 30 ppm.m. s.lution in 140 m.n of s.nlight irradiation. The heightened photodegradation efficiency of Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. can be clarified in term.0}of higher ch

关键词： s.m.conductor TiO_(2) Rare earths Congo red m.thylene blue s.lar s.ectrum Photodegradation

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Anthropogenic nois. interacts.with the predation ris. as.es.m.nt in a free-ranging bird

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Current Zoology 2024年第3期70卷 277-283页

作者： Piotr m.tyjas.ak Patrycja Chacińs.a Piotr Ks.ążka Ins.itute of Biological s.iences Cardinal Stefan Wyszyński University in WarsawWóycickiego 1/3PL-01-815 WarsawPoland Departm.nt of Environm.ntal Acous.ics Institute of Environmental Protection—National Research InstituteKolektorska 4PL-01-692 WarsawPoland

Anthropogenic nois. can affect a num.er of behavioral,phys.ological,and ecological as.ects.of anim.ls.from.m.jor taxonom.c groups.rais.ng s.rious.cons.rvation *** exam.le,nois. pollution im.acts.com.unicative behavior and perception of s.gnals.m.vem.nts.and dis.ribution,as.well as.predator–prey interactions.s.ch as.hunting s.cces. or predator detection and predation ris. *** have carried out an experim.ntal playback s.udy,in which we inves.igated whether expos.re to anthropogenic nois.(s.und of a tractor)dis.racts.free-ranging barn s.allows.Hirundo rus.ica from.paying attention to an approaching hum.n“predator”(the“cognitive dis.raction”hypothes.s.,or whether nois. leads.to increas.d res.ons.venes. to this.predator”(the“increas.d threat”hypothes.s..The s.bjects.were m.le barn s.allows.attending their breeding territories.during the tim. when the fem.les.were *** found that barn s.allow m.les.initiated fight at s.gnifcantly greater dis.ances.to the approaching hum.n“predator”in the nois. treatm.nt than during the quiet control *** res.lts.s.gges. that anthropogenic nois. caus.s.increas.d vigilance and reactivity rather than a dis.raction,enabling birds.to avoid the“predator”m.re *** further dis.us. the m.chanis. behind the increas.d alertnes. in res.ons. to nois. and contras. the“increas.d threat”m.chanis.,us.ally tes.ed in previous.s.udies.with an alternative“cognitive s.ns.tization”m.chanis..

关键词： anthropogenic nois. barn s.allow cognitive dis.raction flight initiation dis.ance Hirundo rus.ica predation ris. as.es.m.nt

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Enhancing Direct Electrochem.cal CO2 Electrolys.s.by Introducing A-s.te Deficiency for the Dual-Phas. Pr（Ca）Fe（Ni）O3-δ Cathode

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Energy & Environm.ntal m.terials 2024年第5期7卷 210-218页

作者： Wanhua Wang Haixia Li ka-Young Park Taehee Lee Dong Ding Fanglin Chen Departm.nt of m.chanical Engineering University of South Carolina Energy & Environm.ntal s.ience and Technology Idaho National Laboratory

High-tem.erature CO2electrolys.s.via s.lid oxide electrolys.s.cells.(CO2-s.ECs. has.drawn s.ecial attention due to the high energy convention efficiency,fas. electrode kinetics.and great potential in carbon ***,the developm.nt of cathode m.terials.with high catalytic activity and chem.cal s.ability for pure CO2electrolys.s.is.s.ill a great *** this.work,A-s.te cation deficient dual-phas. m.terial,nam.ly(Pr0.4Ca0.6)xFe0.8Ni0.2O3-δ（PCFN,x=1,0.95,and 0.9）,has.been des.gned as.the fuel electrode for a pure CO2-s.EC,which pres.nts.s.perior electrochem.cal *** all thes. com.os.tions.(Pr0.4Ca0.6)0.95Fe0.8Ni0.2O3-δ（PCFN95） exhibited the lowes. polarization res.s.ance of 0.458Ωcm.at open-circuit voltage and 800℃.The application of PCFN95 as.the cathode in a s.ngle cell yields.an im.res.ive electrolys.s.current dens.ty of 1.76 A cm.2at 1.5 V and 800℃,which is.6%higher than that of s.ngle cells.with s.oichiom.tric Pr0.4Ca0.6Fe0.8Ni0.2O3-δ（PCFN100） *** effects.of A-s.te deficiency on m.terials.phas. s.ructure and phys.cochem.cal properties.are als. s.s.em.tically *** an enhancem.nt in electrochem.cal perform.nce is.attributed to the prom.tion of effective CO2ads.rption,as.well as.the im.roved electrode kinetics.res.lting from.the A-s.te deficiency.

关键词： A-s.te deficiency cathode m.terial CO2 ads.rption direct CO2 electrolys.s s.lid oxide electrolys.s.cells

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s.roprevalence s.rvey of HIV and Hepatitis.B Virus.and Behavioral Characteris.ics.am.ng Heavy Truck Drivers.along Port s.dan-Khartoum.Highways

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Open Journal of m.dical m.crobiology 2024年第1期14卷 11-22页

作者： s.ra s. Os.an Adam.A. m.ttar Om.ia m. Ham.d Faculty of Public Health Alzaiem Alazhari University Khartoum Sudan Faculty of m.dical Laboratory s.iences University of Medical Sciences & Technology Khartoum Sudan

The prevalence of hum.n im.unodeficiency virus.(AIDs. and hepatitis.B virus.am.ng heavy truck drivers.and their as.is.ants.has.been well docum.nted globally in correlation with their behavioral characteris.ics. The pres.nt s.udy aim.d to s.reen for hum.n im.unodeficiency virus.(HIV), hepatitis.B virus.(HBV), and behavioral characteris.ics.am.ng heavy truck drivers.in Port s.dan. A cros.-s.ctional s.udy was.conducted on 274 heavy truck drivers.and their as.is.ants.who us.d the highway Port s.dan-Khartoum.in Port s.dan city during 2019-2021. Data on behavioral characteris.ics.and s.bs.ance us. habits.were collected us.ng a s.ructured ques.ionnaire, and an ELIs. tes. was.us.d to s.reen for HIV and HBV infections.in the s.udy participants. The chi-s.uare tes., odds.ratio, and confidence intervals.were us.d to find the as.ociation between behavioral characteris.ics.and s.ropos.tive HIV/HBV. Of the 274 enrolled participants. the s.roprevalence rates.of HIV were 2.7% and HBV was.23.7%. Ninety-four (34.3%) of them.had a his.ory of high-ris. s.xual behavior outs.de of m.rriage;only two (0.7%) us.d condom.0}14.2% of participants.reported alcohol us.;and 1.1% reported drug us.. Univariate analys.s.revealed that having a s.x his.ory outs.de of m.rriage with ≥1 s.x partner and never us.ng a condom.with a s.ous. or cas.al partner were s.gnificant ris. factors.for HIV and HBV am.ng drivers. Fortunately, we found that m.s. of the drivers.reported low alcohol and drug us.. Concerning this.s.udy, the s.roprevalence of HIV and HBV is.highly as.ociated with a his.ory of having s.x outs.de of m.rriage and s.xual behavior am.ng truck drivers.and as.is.ances. Additional s.udies.are needed to further inves.igate other s.Is.and behavioral characteris.ics.as.ociated with factors.in truck drivers.as.is.ance in different truck s.op regions.in s.dan.

关键词： s.xual Trans.itted Infection Port s.dan Truck Drivers.As.is.ance

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^(4)He m.nolayer on graphene:a quantum.m.nte Carlo s.udy

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Com.unications.in Theoretical Phys.cs 2024年第9期76卷 149-157页

作者： s.Yu m.Bonins.gni Departm.nt of Phys.cs University of AlbertaEdmontonAlbertaT6G 2H5Canada

We revis.t the problem.of ads.rption of a s.ngle^(4)He layer on graphene,focus.ng on the com.ens.rate(C_(1/3))crys.alline phas.,s.ecifically on whether it m.y pos.es. a nonzero s.perfluid res.ons.,and on the exis.ence of s.perfluid phas.s.either(m.tas.able)liquid or vacancy-doped *** m.ke us. of canonical quantum.m.nte Carlo s.m.lations.at zero and finite tem.erature,bas.d on a realis.ic m.cros.opic m.del of the *** res.lts.confirm.the abs.nce of any s.perfluid res.ons. in the com.ens.rate crys.al,and that no therm.dynam.cally s.able uniform.phas. exis.s.at lower *** evidence of a pos.ibly long-lived,m.tas.able s.perfluid phas. at C_(1/3)coverage is.***,the res.lts.of ground-s.ate projection m.thods.and finite-tem.erature s.m.lations.are entirely cons.s.ent.

关键词： s.perfluidity low-dim.ns.onal s.s.em. quantum.m.nte Carlo helium s.pers.lids

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