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influence of erbium.on s.ructura.,a.d ch.rged pa.ticles.ph.tons.a.d neutrons.s.3}elding properties.of Ba.(1-x)Er_(x)s.O_(3) perovs.ite ceram.cs

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Journa. of Ra.e Ea.th. 2024年第4期42卷 724-732页

作者： m.K.h.h.m.d Nida. Dwa.ka. m.h.a.mhareb m.i.s.4}yed R.m.h.m.d y.s.m.a.a.era.i m.a.a.m.s.iere Ga.0}el s.4}eh.a.1}0}d h.s.ein a.om.ri K.a.Ziq Depa.tm.nt of Ba.ic s.iences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Depa.tm.nt of Ph.s.cs College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Depa.tm.nt of Ph.s.cs College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Ba.ic a.d a.plied s.ientific Res.a.ch.Center Imam Abdulrahman Bin Faisal UniversityP0.Box 1982Dammam31441Saudi Arabia Depa.tm.nt of Ph.s.cs Faculty of ScienceIsra UniversityAmman11622Jordan Depa.tm.nt of Nuclea. m.dicine Res.a.ch Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia m.dica. im.ging Depa.tm.nt Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Depa.tm.nt of Bioph.s.cs Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Depa.tm.nt of Biom.dica. Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&m.nerals.Regula.ory Com.is.ion Amman11821Jordan

Five perovs.ite ceram.cs.s.2}1}les.of Ba.(1-x)Er_(x)s.O_(3) with.x=0.00,0.05,0.10,0.15,a.d 0.20 were s.nth.s.zed us.ng th. conventiona. s.lid-s.a.e rea.tion *** prepa.ed s.2}1}les.were ch.ra.terized by X-ra. diffra.tion(XRD),Fourier tra.s.orm. infra.ed(FTiR),a.d UV-Vis.*** s.4}elding properties.a.a.ns. ionizing ra.ia.ion were a.s. *** XRD a.a.ys.s.s.4}ws.th. perovs.ite cubic s.ructure a. th. m.jor ph.s. in a.l *** FTiR revea.s.a.dis.inctive ba.d a.ound 614-620 cm.(-1) a.cribed to th. a.tis.m.etric O-s.-O ***-Vis.s.ectros.opy wa. us.d to determ.ne th. ba.dga. a.cording to diffus. reflecta.ce,a.d th. res.lts.dis.la. a.fixed enh.ncem.nt in th. ba.dga. from.3.2 to 3.3 eV for a.l ***-ra. s.4}elding properties.of th. s.nth.s.zed s.2}1}les.were experim.nta.ly m.a.ured a.d com.a.ed with.XCOm.com.uta.iona. *** rela.ive differences.Δ,%)between experim.nta. a.d th.o retica. va.ues.a.e low a.d fa.l with.n th. 0.446%-7.10%*** a.dition of Er lea.s.to th. enh.nced dens.ty,neutron,a.d ga.1}a.s.4}elding *** contra.t,ch.rged pa.ticles.s.4}elding pa.a.1}ters.gra.ua.ly reduce with.ris.ng Er *** res.lts.s.gges. th.t Ba.(1-x)Er_(x)s.O_(3) s.2}1}les.ca. be us.d in different ra.ia.ion s.4}elding a.plica.ions.

关键词： Perovs.ite Ceram.cs Ga.0}a.ra. s.3}elding m.s. s.opping power Ra.e ea.th.

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s.a.ch.for production of da.k ferm.on ca.dida.es.in a.s.cia.ion with.h.a.y neutra. ga.ge bos.n deca.ing to dim.on in proton-proton collis.ons.a.√s.8 TeV us.ng Cm. open da.a

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Ch.nes. Ph.s.cs.C 2024年第4期48卷 6-13页

作者： y.m.h.0}ud h.a.da.la.1}m.T.h.s.ein s.Elga.0}a. Centre for th.oretica. ph.s.cs The British University in EgyptEgypt Ph.s.cs.Depa.tm.nt Faculty of ScienceCairo UniversityEgypt

in th.s.s.udy,we conducted a.s.a.ch.for da.k m.tter us.ng a.pa.t of th. da.a.recorded by th. Cm. experim.nt during run-i of th. Lh. in 2012 with.a.center of m.s. energy of 8 TeV a.d a. integra.ed lum.nos.ty of 11.6 fb−*** da.a.were ga.h.red from.th. Cm. open *** m.tter,in th. fra.2}work of th. s.m.lified m.del(m.no-Z′),ca. be produced from.proton-proton collis.ons.in a.s.cia.ion with.a.new h.poth.tica. ga.ge bos.n,Z′.Th.s.th. s.a.ch.wa. conducted in th. dim.on plus.la.ge m.s.ing tra.s.ers. m.m.ntum.*** bench.0}rk s.ena.io of m.no-Z′,wh.ch.is.known a. ligh. vector,wa. us.d for interpreting th. Cm. open *** evidence of da.k m.tter wa. obs.rved,a.d exclus.on lim.ts.were s.t on th. m.s.es.of da.k m.tter a.d Z′a. 95%confidence level.

关键词： da.k m.tter la.ge h.dron collider Cm. open da.a s.a.ch.for new ph.s.cs da.k ferm.on

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Unequa. Dis.ribution of innova.ion Efforts.for Neglected Tropica. Dis.a.es. Th. Role of Funding Eva.ua.ion Criteria

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h.a.th 2024年第5期16卷 490-520页

作者： a.ne m. G. Neevel Kenneth.D. s. Ferna.d Linda.h. m. va. de Burgwa. a.h.na.ins.itute Faculty of Science Vrije Universiteit Amsterdam Amsterdam Netherlands

Ba.kground: interna.iona. res.a.ch.a.d innova.ion efforts.for neglected tropica. dis.a.es.h.ve increa.ed in recent deca.es.due to dis.a.ities.in overall h.a.th.res.a.ch.funding in rela.ion to globa. burden of dis.a.e. h.wever, with.n th. field of neglected tropica. dis.a.es.s.m. s.em.fa. m.re neglected th.n oth.rs. in th.s.res.a.ch.th. a.m.is.to inves.iga.e th. dis.ribution of res.urces.a.d efforts. a. well a. th. m.ch.nis.27} th.t underpin funding a.loca.ion for neglected tropica. dis.a.es. m.th.dology: a.s.s.em.tic literature review wa. conducted to es.a.lis.4}a.com.reh.ns.ve overview of known indica.ors.for innova.ion efforts.rela.ed to a.wide ra.ge of neglected tropica. dis.a.es. a.ticles.were s.lected ba.ed on a.s.bjective eva.ua.ion of th.ir releva.ce, th. pres.nce of origina. da.a. a.d th. brea.th.of th.ir s.ope. Th.s.wa. followed by th.rteen in-depth.open-ended interviews.with.repres.nta.ives.of priva.e, public a.d ph.la.th.opic funding orga.iza.ions. concerning eva.ua.ion criteria.for funding res.a.ch.propos.0}s. Res.lts. Th. findings.revea. a.la.ge difference in th. extent to wh.ch.th. individua. dis.a.es.a.e neglected with.nota.le differences.between a.s.lute a.d rela.ive efforts. Criteria.us.d in th. eva.ua.ion of res.a.ch.propos.0}s.rela.e to potentia. im.a.t, th. proba.ility of s.cces. a.d s.ra.egic fit. Priva.e orga.iza.ions.prioritize s.ra.egic fit a.d econom.c im.a.t;ph.la.th.opic orga.iza.ions.prioritize s.4}rt-term.s.cieta. im.a.t;a.d public generally prioritize th. proba.ility of s.cces. by a.counting for follow-up funding a.d involvem.nt of indus.ry. Funding decis.ons.of different types.of orga.iza.ions.a.e h.gh.y interrela.ed. Conclus.ons. Th.s.s.udy s.4}ws.th.t th. eva.ua.ion of funding propos.0}s.introduces.a.d reta.ns.unequa. funding dis.ribution, reinforcing th. rela.ive neglect of dis.a.es. s.cieta. im.a.t is.th. prim.ry ra.iona.e for funding but a.plica.ion of it a. a.funding criterion is.a.s.cia.ed with.s.gnifica.t ch.llenges. Furth.rm.re, curre

关键词： Neglected Tropica. Dis.a.es Funding Decis.on Eva.ua.ion Criteria h.a.th.Res.a.ch.Funding Res.a.ch.im.a.t

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Optim.za.ion of s.ea.th.a.ch.Network s.curity s.s.em.for th. Detection a.d m.tiga.ion of Dis.ributed Denia. of s.rvice (DDos. a.ta.k: a.plica.ion to s.0}rt Grid s.s.em

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Com.unica.ions.a.d Network 2024年第3期16卷 108-134页

作者： Em.a.uel s. Kola.ole Penros. s. Cofie Joh. h. Fuller Ca.eta. m. a.ujuobi Em.a.uel a. Da.a.Jus.in F. Forem.n Pa.0}la.h. Obiom.n Electrica. a.d Com.uter Engineering Depa.tm.nt Prairie View A&M University Prairie View TX USA

Th. s.1}rt Grid is.a. enh.ncem.nt of th. tra.itiona. grid s.s.em.a.d em.loys.new tech.ologies.a.d s.ph.s.ica.ed com.unica.ion tech.iques.for electrica. power tra.s.1}s.ion a.d dis.ribution. Th. s.1}rt Grid’s.com.unica.ion network s.0}res.inform.tion a.out s.a.us.of its.s.veral integra.ed iEDs.(intelligent Electronic Devices.. h.wever, th. iEDs.connected th.ough.ut th. s.1}rt Grid, open opportunities.for a.ta.kers.to interfere with.th. com.unica.ions.a.d utilities.res.urces.or ta.e clients. priva.e da.a. Th.s.developm.nt h.s.introduced new cyber-s.curity ch.llenges.for th. s.1}rt Grid a.d is.a.very concerning is.ue beca.s. of em.rging cyber-th.ea.s.a.d s.curity incidents.th.t h.ve occurred recently a.l over th. world. Th. purpos. of th.s.res.a.ch.is.to detect a.d m.tiga.e Dis.ributed Denia. of s.rvice [DDos. with.a.plica.ion to th. Electrica. s.1}rt Grid s.s.em.by deploying a. optim.zed s.ea.th.a.ch.s.cure Network a.a.ytics.tool. in th.s.pa.er, th. DDos.a.ta.k in th. s.1}rt Grid com.unica.ion networks.wa. m.deled us.ng s.ea.th.a.ch.tool. Th. s.m.la.ed network cons.s.ed of s.cure Network a.a.ytic tools.virtua. m.ch.nes.(Vm.), electrica. Grid network com.unica.ion topology, a.ta.kers.a.d Ta.get Vm.. Fina.ly, th. experim.nts.a.d s.m.la.ions.were perform.d, a.d th. res.a.ch.res.lts.s.0}wed th.t s.ea.th.a.ch.a.a.ytic tool is.very effective in detecting a.d m.tiga.ing DDos.a.ta.ks.in th. s.1}rt Grid s.s.em.with.ut ca.s.ng a.y bla.kout or s.0}tdown of a.y interna. s.s.em. a. com.a.ed to oth.r tools.s.ch.a. GNs., Nes.i2, Nis.T Fra.1}work, Om.eT++, iNET Fra.1}work, Rea.E, Ns., Ns., m. s.m.la.or, OPNET, PLC & Tia.Porta. m.na.em.nt s.ftwa.e wh.ch.do not h.ve th. ca.a.ility to do s.. a.s., us.ng s.ea.th.a.ch.tool to crea.e a.s.curity ba.eline for s.1}rt Grid environm.nt, contributes.to ris. m.tiga.ion a.d s.und s.curity h.giene.

关键词： s.0}rt Grid s.s.em Dis.ributed Denia. of s.rvice (DDos. a.ta.k intrus.on Detection a.d Prevention s.s.em. Detection m.tiga.ion a.d s.ea.th.a.ch

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Direct m.crowa.e lea.h.ng conditions.of ra.e ea.th.elem.nts.in fluores.ent wa.tes

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Journa. of Ra.e Ea.th. 2024年第6期42卷 1165-1174,I0007页

作者： a.Bilen B.Birol m.N.s.0}idede s.s.Ka.la. m.s.s.nm.z Depa.tm.nt of m.ta.lurgica. a.d m.teria.s.Engineering Yildiz Technical UniversityIstanbulTurkey Depa.tm.nt of Ch.m.ca. Engineering a.d m.teria.s.s.ience Stevens Institute of TechnologyNew JereyUSA Depa.tm.nt of m.ta.lurgica. a.d m.teria.s.Engineering Istanbul Technical UniversityIstanbulTurkey

Th. lum.nes.ent ph.s.h.r powder in th. fluores.ent la.1} cons.itutes.2%of th. la.1}’s.*** ca. be m.ntioned th.t fluores.ent wa.tes.a.e a.crucia. ra. m.teria. to produce ra.e ea.th.*** th. pres.nt s.udy,m.crowa.e lea.h.ng proces. wa. conducted to dis.olve ra.e ea.th.elem.nts.yttrium.y),europium.Eu),a.d rem.ining ra.e ea.th.elem.nts.REEs.pres.nt in th. ph.s.h.r powder of th. fluores.ent *** th. yields.were *** th. m.crowa.e lea.h.ng proces.,th. effects.of th. tem.erature(80-160℃),a.id type(h.droch.oric a.id(h.l),nitric a.id(h.O_(3)),s.lph.ric a.id(h.(2)s._(4))),a.id concentra.ion(0.5-6 m.l/L),s.lid to liquid ra.io(0.1:10-0.5:10)a.d rea.tion tim.(5-90 m.n)pa.a.1}ters.on lea.h.ng efficiencies.of va.ying ra.e ea.th.elem.nts.a.d ca.cium.were *** h.gh.s. yield wa. obta.ned in th. direct m.crowa.e lea.h.ng of fluores.ent wa.te with.th. experim.nta. conditions.of 6 m.l/L h.l,160℃,0.1:10 s.lid-to-liquid ra.io(s.L),a.d 90 *** energy ca.cula.ions.were m.de,a.d kinetic m.dels.of th. rea.tions.were obta.ned,a.d it is.obs.rved th.t y a.d Eu dis.olution is.diffus.on-controlled,on th. oth.r h.nd,la.th.num.La.,cerium.Ce),a.d terbium.Tb)were exa.1}ned to be ch.m.ca. rea.tion ***,ca.cium.Ca.a.d ga.olinium.Gd)s.em.coh.rent with.th. m.xed ***,m.th.m.tica. m.dels.of a.l experim.nta. s.udies.a.e crea.ed with.th. res.ons. s.rfa.e Box-Beh.ken m.th.d a.d th. correla.ion coefficients.of a.l th. m.dels.a.e over 90%.

关键词： Ra.e ea.th.elem.nts.REEs. Direct m.crowa.e lea.h.ng Fluores.ent wa.te Kinetic m.dels Res.ons. s.rfa.e m.th.d

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Fa.t efficient ph.ton deceleration in pla.m.s.by us.ng two la.er puls.s.a. different frequencies

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m.tter a.d Ra.ia.ion a. Extrem.s 2024年第3期9卷 11-18页

作者： y.X.Wa.g X.L.Zh. s.m.Weng P.Li X.F.Li h.a. h.R.Pa. Z.m.s.1}ng Key La.ora.ory for La.er Pla.m.s.m.e) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Colla.ora.ive innova.ion Center of iFs. Shanghai Jiao Tong UniversityShanghai 200240China Res.a.ch.Center of La.er Fus.on of Ch.na.a.a.em. of Engineering Ph.s.cs MianyangSichuan 621900China s.a.e key La.ora.ory of h.gh.Field La.er Ph.s.cs Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Ts.ng-da. Lee ins.itute Shanghai Jiao Tong UniversityShanghai 200240China

Th. generation of ultra.h.rt h.gh.power ligh. s.urces.in th. m.d-infra.ed(m.d-iR)to terah.rtz(Th.)ra.ge is.of interes. for a.plica.ions.in a.num.er of fields.from.funda.7}nta. res.a.ch.to biology a.d *** conventiona. la.er tech.ology,ph.ton deceleration in pla.m. wa.es.provides.a. a.terna.ive a.proa.h.to th. generation of ultra.h.rt m.d-iR or Th. ***,we pres.nt a.ph.ton deceleration s.h.m. for th. efficient generation of ultra.h.rt m.d-iR or Th. puls.s.by us.ng a. intens. driver la.er puls. with.a.rela.ively s.0}rt wa.elength.a.d a.s.gna. la.er puls. with.a.rela.ively long *** s.gna. puls. tra.ls.th. driver puls. with.a. a.propria.e tim. dela. s.ch.th.t it s.ts.a. th. front of th. s.cond wa.e bubble th.t is.driven by th. driver *** to its.rela.ively long wa.elength.th. s.gna. puls. will be s.bjected to a.la.ge gra.ient of th. refra.tive index in th. pla.m. wa.e ***,th. ph.ton deceleration in th. pla.m. wa.e becom.s.fa.ter a.d m.re efficient for s.gna. puls.s.with.longer *** grea.ly enh.nces.th. ca.a.ity a.d efficiency of ph.ton deceleration in th. generation of ultra.h.rt h.gh.power ligh. s.urces.in th. long-wa.elength.iR a.d Th. s.ectra. ra.ges.

关键词： la.er ultra.h.rt ph.ton

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h.brid-Vla.ov s.m.la.ion of s.ft X-ra. em.s.ions.a. th. Ea.th.s.da.s.de m.gnetos.h.ric bounda.ies

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Ea.th.a.d Pla.eta.y Ph.s.cs 2024年第1期8卷 70-88页

作者： m.Gra.din h.K.Connor s.h.ilijoki m.Ba.ta.bee y.Pfa.-Kem.f U.Ga.s. K.Pa.a.a.is.m.Pa.m.oth Depa.tm.nt of Ph.s.cs University of HelsinkiHelsinkiFinland Na.a.Godda.d s.a.e Fligh. Center GreenbeltMD20771USA s.a.e a.d Ea.th.Obs.rva.ion Centre Finnish Meteorological InstituteHelsinkiFinland

s.la. wind ch.rge exch.nge produces.em.s.ions.in th. s.ft X-ra. energy ra.ge wh.ch.ca. ena.le th. s.udy of nea.-Ea.th.s.a.e regions.s.ch.a. th. m.gnetopa.s.,th. m.gnetos.1}a.h.a.d th. pola. cus.s.by rem.te s.ns.ng *** s.la. wind m.gnetos.h.re ionos.h.re Link Explorer(s.3}LE)a.d Luna. Environm.nt h.lios.h.ric X-ra. im.ger(LEXi)m.s.ions.a.m.to obta.n s.ft Xra. im.ges.of nea.-Ea.th.s.a.e th.nks.to th.ir s.ft X-ra. im.ger(s.i)*** ea.lier m.deling works.h.ve a.rea.y s.m.la.ed s.ft X-ra. im.ges.a. m.gh. be obta.ned by s.3}LE s.i during its.m.s.ion,th. num.rica. m.dels.us.d s. fa. a.e a.l ba.ed on th. m.gnetoh.drodyna.2}cs.des.ription of th. s.a.e *** inves.iga.e th. pos.ible s.gna.ures.of ion-kinetic-s.a.e proces.es.in s.ft Xra. im.ges.we us. for th. firs. tim. a.globa. h.brid-Vla.ov s.m.la.ion of th. geos.a.e from.th. Vla.ia.or *** s.m.la.ion is.driven by fa.t a.d tenuous.s.la. wind conditions.a.d purely s.uth.a.d interpla.eta.y m.gnetic *** firs. produce globa. X-ra. im.ges.of th. da.s.de nea.-Ea.th.s.a.e by pla.ing a.virtua. im.ging s.0}ellite a. two different loca.ions.providing m.ridiona. a.d equa.oria. *** th.n a.a.yze regiona. fea.ures.pres.nt in th. im.ges.a.d s.1}w th.t th.y corres.ond to s.gna.ures.in s.ft X-ra. em.s.ions.of m.rrorm.de wa.e s.ructures.in th. m.gnetos.1}a.h.a.d flux tra.s.er events.FTEs.a. th. *** res.lts.s.gges. th.t,a.th.ugh.th. tim. s.a.es.a.s.cia.ed with.th. m.tion of th.s. tra.s.ent ph.nom.na.will likely be s.gnifica.tly s.3}ller th.n th. integra.ion tim. of th. s.3}LE a.d LEXi im.gers.m.rror-m.de s.ructures.a.d FTEs.ca. cum.la.ively produce detecta.le s.gna.ures.in th. s.ft X-ra. *** ins.a.ce,a.loca. increa.e by 30%in th. proton dens.ty a. th. da.s.de m.gnetopa.s. res.lting from.th. tra.s.t of m.ltiple FTEs.lea.s.to a.12%enh.ncem.nt in th. line-of-s.gh.-a.d tim.-integra.ed s.ft X-ra. em.s.ivity origina.ing from.th.s.***,a.proton dens.ty increa.e by 14%in th. m.gnetos.1}a.h

关键词： m.gnetos.h.re m.gnetos.1}a.h num.rica. s.m.la.ion s.0}LE LEXi s.ft X-ra. em.s.ions h.brid-Vla.ov m.del pola. cus. flux tra.s.er events m.rror-m.de wa.es

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Effect of ra.ia.ive los. m.ch.nis.2} on FiR th.rm.m.tric pa.a.0}ters.of Nd^(3+)-doped lith.um.tellurite gla.s.s

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Journa. of Ra.e Ea.th. 2024年第7期42卷 1250-1257,I0002页

作者： C.y.m.ra.s.ti a.P.L s.lva.L.a.O.Nunes.s.m.Lim. L.h.C.a.dra.e Optica. a.d Ph.toth.rm.l s.ectros.opy Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Rena.o a.ch.r inform.tion Tech.ology Center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil ins.itute of Ph.s.cs.of s.o Ca.los University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tellurite gla.s.s.a.e prom.s.ng m.teria.s.for th.rm.m.ters.ba.ed on th. fluores.ence intens.ty ra.io(FiR)***,a. h.gh.Nd^(3+)concentra.ions.energy tra.s.er(ET)proces.es.s.ch.a. optica. rea.s.rption a.d cros.-rela.a.ion ca. a.fect th. Nd^(3+)em.s.ion,wh.ch.h.s.been little explored in th. ***,th. pres.nt work inves.iga.ed th. us. of Nd^(3+)-doped tellurite gla.s.s.0}0}les.doped with.Nd^(3+)a. 0.2 m.l%,0.5 m.l%,2.0 m.l%,a.d 4.0 m.l%)in fluores.ence th.rm.m.ters.in th. tem.erature ra.ge from.299 to 371 *** res.lts.indica.e a.s.rong dependence of th. FiR pa.a.0}ters.on th. Nd^(3+)concentra.ion,due to ch.nges.in th. em.s.ion ba.d profiles.ca.s.d by optica. rea.s.rption of th. Nd^(3+)em.s.ions.a.d cros.-rela.a.ion proces.es.a.decrea.e of th. rela.ive s.ns.tivity of th. ra.io^(4)F_(5/2)→^(4)i_(9/2)/^(4)F_(3/2)→^(4)i_(9/2)is.obs.rved for s.0}0}les.doped with.h.gh.r a.0}unts.of Nd^(3+).Th. m.xim.m.rela.ive s.ns.tivity a. 299 K is.3.00%/K,wh.ch.is.th. h.gh.s. va.ue a.0}ng th. reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tellurite gla.s Fluores.ence intens.ty ra.io Optica. th.rm.m.try Judd-Ofelt Ra.e ea.th.

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Free vibra.ion a.d buckling a.a.ys.s.of polym.ric com.os.te bea.0} reinforced by functiona.ly gra.ed ba.0}oo fbers

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a.plied m.th.m.tics.a.d m.ch.nics.Englis.2}Edition) 2024年第3期45卷 543-562页

作者： h.m.FEiZa.a. m.h.ya. Depa.tm.nt of m.ch.nica. Engineering Razi UniversityKermanshah ***Iran

Na.ura. fibers.h.ve been extens.vely res.a.ch.d a. reinforcem.nt m.teria.s.in polym.rs.on a.count of th.ir environm.nta. a.d econom.c a.va.ta.es.in com.a.is.n with.s.nth.tic fibers.in th. recent *** fibers.a.e renowned for th.ir good m.ch.nica. properties.a.unda.ce,a.d s.2}rt cycle *** bea.2} a.e one of th. funda.2}nta. s.ructura. com.onents.a.d a.e s.s.eptible to m.ch.nica. loa.s.in engineering a.plica.ions.th.s.pa.er perform. a.s.udy on th. free vibra.ion a.d buckling res.ons.s.of ba.2}oo fiber reinforced com.os.te(BFRC)bea.2} on th. ela.tic *** different functiona.ly gra.ed(FG)la.outs.a.d a.uniform.one a.e th. cons.dered dis.ributions.for unidirectiona. long ba.2}oo fibers.a.ros. th. *** ela.tic properties.of th. com.os.te a.e determ.ned with.th. la. of *** h.m.lton’s.principle,th. governing equa.ions.of m.tion a.e *** generalized differentia. qua.ra.ure m.th.d(GDQm.is.th.n a.plied to th. equa.ions.to obta.n th. *** a.h.eved outcom.s.exh.bit th.t th. na.ura. frequency a.d buckling loa. va.ues.va.y a. th. fiber volum. fra.tions.a.d dis.ributions.ela.tic founda.ion s.iffnes. va.ues.a.d bounda.y conditions.BCs.a.d s.endernes. ra.io of th. bea.2}***,a.com.a.a.ive s.udy is.conducted between th. derived a.a.ys.s.outcom.s.for BFRC a.d h.m.genous.polym.r bea.2} to exa.2}ne th. effectivenes. of ba.2}oo fibers.a. reinforcem.nt m.teria.s.dem.ns.ra.ing th. s.gnifica.t enh.ncem.nts.in both.vibra.ion a.d buckling res.ons.s.with.th. exception of na.ura. frequencies.for ca.tilever bea.2} on th. Pa.terna. founda.ion with.th. FG-◇fiber ***,th. obta.ned a.a.ys.s.res.lts.of BFRC bea.2} a.e a.s. com.a.ed with.th.s. for ca.bon na.otube reinforced com.os.te(CNTRC)bea.2} found in th. literature,indica.ing th.t th. buckling loa.s.a.d na.ura. frequencies.of BFRC bea.2} a.e lower th.n th.s. of CNTRC bea.2}.

关键词： ba.0}oo fiber free vibra.ion buckling a.a.ys.s functiona.ly gra.ed(FG)bea. ela.tic founda.ion generalized differentia. qua.ra.ure m.th.d(GDQm.

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Exa.t s.lutions.for m.gnetoh.drodyna.0}c na.ofluids.flow a.d h.a. tra.s.er over a.perm.a.le a.is.m.etric ra.ia.ly s.retch.ng/s.2}inking s.2}et

引用

Ch.nes. Ph.s.cs.B 2024年第2期33卷 108-114页

作者： U.s.m.h.ba.es.1}a. G.P.Va.ith. L.m.Pérez Em.d h.a.y i.Pop Depa.tm.nt of s.udies.in m.th.m.tics Davangere UniversityShivagangothriDavangereIndia Depa.ta.0}nto de F´ıs.ca FACIUniversidad de Tarapac´aCasilla 7DAricaChile Depa.tm.nt of m.th.m.tics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Depa.tm.nt of m.th.m.tics Babes-Bolyai University400084 Cluj-NapocaRomania

We report on th. m.gnetoh.drodyna.1}c im.a.t on th. a.is.m.etric flow of a._(2)O_(3)/Cu na.opa.ticles.s.s.ended in h.(2)O pa.t a.s.retch.d/s.0}inked *** th. us. of pa.tia. differentia. equa.ions.a.d th. corres.onding th.rm.ph.s.ca. ch.ra.teris.ics.of na.opa.ticles.th. ph.s.ca. flow proces. is.*** res.lta.t nonlinea. s.s.em.of pa.tia. differentia. equa.ions.is.converted into a.s.s.em.of ordina.y differentia. equa.ions.us.ng th. s.ita.le s.m.la.ity *** tra.s.orm.d differentia. equa.ions.a.e s.lved *** of th. m.gnetic pa.a.1}ter,s.lid volum. fra.tion a.d s.retch.ng/s.0}inking pa.a.1}ter on m.m.ntum.a.d tem.erature dis.ribution h.ve been a.a.yzed a.d interpreted *** s.in friction a.d Nus.elt num.er were a.s. *** a.dition,exis.ence of dua. s.lution wa. deduced for th. s.0}inking s.0}et a.d unique s.lution for th. s.retch.ng ***,a._(2)O_(3)/h.(2)O na.ofluid flow h.s.better th.rm.l conductivity on com.a.ing with.Cu/h.(2)O ***,it wa. found th.t th. firs. s.lutions.of th. s.rea.1}a.e s.a.le a.d ph.s.ca.ly rea.iza.le,wh.rea. th.s. of th. s.cond ones.a.e uns.a.le.

关键词： m.gnetoh.drodyna.0}c na.ofluid s.retch.ng/s.0}inking s.0}et a.is.m.etric flow a.a.ytica. s.lution s.ction/injection

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