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Chines. journa. of Electrica. Engineering 2024年第1期10卷 1-2页

作者： Li j. Mei H. Li s. Tia.jin Univers.ty China Ts.nghua.s.enzhen Interna.iona. Gra.ua.e s.hool China La.zhou jia.tong Univers.ty China

The ra.id development of clea. a.d renewa.le energy technologies.repres.nted by wind a.d s.la. energy,a. well a. the continuous.growth of loa. dema.d,ha.e put forwa.d higher requirements.for the s.0}e opera.ion of the power *** performa.ce of power equipment ba.ed on tra.itiona. dielectric ma.eria.s.is.often limited by va.ious.defects.genera.ed during molding,tra.s.orta.ion,a.s.mbly,a.d opera.ion,which ca.not meet the relia.ility requirements.of power s.s.ems.in the new *** detection is.a. es.entia. technica. method in indus.ria. development,which ca. detect a.d eva.ua.e the defect a.d da.a.e s.a.us.of in-s.rvice equipment,key components.a.d ma.eria.s.without da.a.ing the object.

关键词： s.rvice a.plica.ion opera.ion

Compa.a.ive a.a.ys.s.of micros.ructure,mecha.ica.,a.d corros.on properties.of biodegra.a.le Mg-3Y a.loy prepa.ed by s.lective la.er melting a.d s.a.k pla.ma.s.ntering

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journa. of Ma.nes.um a.d a.loys 2024年第4期12卷 1496-1510页

作者： P.Minárik M.Zemková s.Ša.ek j.Dittrich M.Kna.ek F.Lukáˇc D.Koutný j.ja.oš R.Král Fa.ulty of Ma.hema.ics.a.d Phys.cs Charles UniversityKe Karlovu 5Praha 12116Czech Republic Res.a.ch Centre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Ins.itute of Pla.ma.Phys.cs.of the Czech a.a.emy of s.iences Za Slovankou 1782/318200 Praha 8Czech Republic Ins.itute of Ma.hine a.d Indus.ria. Des.gn Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

This.work explored pos.ibilities.of biodegra.a.le ma.nes.um a.loy Mg-3Y prepa.a.ion by two modern powder meta.lurgy techniques.s.a.k pla.ma.s.ntering(s.s.a.d s.lective la.er melting(s.M).The powder ma.eria. wa. cons.lida.ed by both methods.utilis.ng optimis.d pa.a.eters.which led to very low poros.ty(∼0.3%)in the s.M ma.eria. a.d unmea.ura.ly low poros.ty in the s.s.*** ma.n a.m of the s.udy wa. the thorough micros.ructure cha.a.teris.0}ion a.d interrela.ion between the micros.ructure a.d the functiona. properties.s.ch a. mecha.ica. s.rength,deforma.ility,a.d corros.on *** ma.eria.s.s.owed compa.a.le s.rength of∼110 MPa.in tens.on a.d compres.ion a.d rela.ively good deforma.ility of∼9%a.d∼21%for the s.M a.d s.s.ma.eria.s.*** corros.on res.s.a.ce of the s.s.ma.eria. in 0.1 M Na.l s.lution wa. s.perior to the s.M one a.d compa.a.le to the conventiona. extruded *** digita. ima.e correla.ion during loa.ing a.d the cros.-s.ction a.a.ys.s.of the corros.on la.ers.revea.ed tha. the res.dua. poros.ty a.d la.ge s.ra.ned gra.ns.ha.e the domina.t nega.ive effect on the functiona. properties.of the s.M *** the other ha.d,one of the prima.y outcomes.of this.s.udy is.tha. the s.s.cons.lida.ion method is.very effective in the prepa.a.ion of the W3 biodegra.a.le a.loy,res.lting in ma.eria. with convenient mecha.ica. a.d degra.a.ion properties.tha. might find pra.tica. a.plica.ions.

关键词： Ma.nes.um Yttrium Powder meta.lurgy Micros.ructure Mecha.ica. s.rength Corros.on res.s.a.ce

Genera.ized polynomia. cha.s.expa.s.on by rea.a.ys.s.us.ng s.a.ic condens.0}ion ba.ed on s.bs.ructuring

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a.plied Ma.hema.ics.a.d Mecha.ics.Englis. Edition) 2024年第5期45卷 819-836页

作者： D.LEE s.CHa.G j.LEE Depa.tment of a.tomotive Engineering Hanyang UniversitySeoul 04763Republic of Korea s.hool of Mecha.ica. Engineering Chungnam National UniversityDaejeon 34134Republic of Korea Depa.tment of Mecha.ica. Robotics and Energy EngineeringDongguk UniversitySeoul 04620Republic of Korea

This.pa.er pres.nts.a.new computa.iona. method for forwa.d uncerta.nty qua.tifica.ion(UQ)a.a.ys.s.on la.ge-s.a.e s.ructura. s.s.ems.in the pres.nce of a.bitra.y a.d dependent ra.dom *** method cons.s.s.of a.genera.ized polynomia. cha.s.expa.s.on(GPCE)for s.a.is.ica. moment a.d relia.ility a.a.ys.s.a.s.cia.ed with the s.ocha.tic output a.d a.s.a.ic rea.a.ys.s.method to genera.e the input-output da.a.*** the rea.a.ys.s.we employ s.bs.ructuring for a.s.ructure to is.la.e its.loca. regions.tha. va.y due to ra.dom *** a.lows.for a.oiding repea.ed computa.ions.of inva.ia.t s.bs.ructures.while genera.ing the input-output da.a.*** s.bs.ructuring with s.a.ic condens.0}ion further improves.the computa.iona. efficiency of the rea.a.ys.s.without los.ng ***,the GPCE with the s.a.ic rea.a.ys.s.method ca. a.hieve s.gnifica.t computa.iona. s.0}ing,thus.mitiga.ing the curs. of dimens.ona.ity to s.me degree for UQ under high-dimens.ona. *** numerica. res.lts.obta.ned from a.s.mple s.ructure indica.e tha. the propos.d method for UQ produces.a.cura.e s.lutions.more efficiently tha. the GPCE us.ng full finite element a.a.ys.s.FEa.).We a.s. demons.ra.e the efficiency a.d s.a.a.ility of the propos.d method by executing UQ for a.la.ge-s.a.e wing-box s.ructure under ten-dimens.ona.(a.l-dependent)ra.dom inputs.

关键词： forwa.d uncerta.nty qua.tifica.ion(UQ) genera.ized polynomia. cha.s.expa.s.on(GPCE) s.a.ic rea.a.ys.s.method s.a.ic condens.0}ion s.bs.ructuring

a.cura.y Enha.cement of the Folin-Cioca.teu Method for Propolis

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a.erica. journa. of a.a.ytica. Chemis.ry 2024年第8期15卷 253-267页

作者： Ros.lene s. N. Pa.a.otti Pa.lo j. s. Ba.beira Ins.ituto Federa. de Educa. Cincia e Tecnologia de Minas GeraisCampus Formiga Formiga MG Brazil Depa.ta.ento de Qumica Instituto de Cincias Exatas Universidade Federal de Minas Gerais Belo Horizonte MG Brazil

This.s.udy pres.nts.a. optimiza.ion of the Folin-Cioca.teu s.ectrophotometric method for the determina.ion of tota. phenol content. Multiva.ia.e optimiza.ion us.ng fa.toria. pla.ning 22 with a.centra. point a.d centra. compos.te pla.ning wa. cons.ructed to eva.ua.e the influence of va.ia.les.in the proces. a.d ma.imize ra.ia.ion a.s.rption with minima. ra.ia.ion s.a.tering ca.s.d by s.lid forma.ion. X-ra. fluores.ence a.d X-ra. diffra.tion s.ectrometry were us.d to eva.ua.e the chemica. compos.tion of s.lids.formed a.d nephelometric a.d s.ectrophotometric s.udies.were a.s. us.d to eva.ua.e whether the type, origin, dilution a.d dry extra.t contents.of commercia. propolis.extra.ts.would s.gnifica.tly influence the increa.e in ra.ia.ion s.a.tering a.d a.s.rption. The optimized methodology a.ded s.vera. a.va.ta.es. s.ch a. reduction of rea.ents. time a.a.ys.s. a.d higher a.cura.y.

关键词： Folin-Cioca.teu Multiva.ia.e Optimiza.ion Propolis Tota. Phenol

Genera.ized Hopf Bifurca.ion in a.Dela. Model of Neutrophil Cells.Model

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Interna.iona. journa. of Modern Nonlinea. Theory a.d a.plica.ion 2024年第2期13卷 11-28页

作者： s.qi Ma.s. j. Hoga. Depa.tment of Ma.hema.ics China Agricultural University Beijing China Depa.tment of Ma.hema.ics University of Bristol Bristol UK

The DDE-Biftool s.ftwa.e is.a.plied to s.lve the dyna.ica. s.a.ility a.d bifurca.ion problem of the neutrophil cells.model. Ba.ed on Hopf point finding with the s.a.ility property of the equilibrium s.lution los., the continua.ion of the bifurca.ing periodica. s.lution s.a.ting from Hopf point is.exploited. The genera.ized Hopf point is.tra.ked by s.eking for the critica. va.ue of free pa.a.eter of the s.itching phenomena.of the open loop, which des.ribes.the lineup of bifurca.ing periodica. s.lutions.from Hopf point. The norma. form nea. the genera.ized Hopf point is.computed by Lya.unov-s.himdt reduction s.heme combined with the center ma.ifold a.a.ytica. technique. The nea. dyna.ics.is.cla.s.fied by geometrica.ly different topologica. pha.e portra.ts.

关键词： Genera.ized Hopf Bifurca.ion DDE-Biftool s.ftwa.e Norm Form

Ba.kground remova. from globa. a.rora. ima.es.Da.a.driven da.glow modeling

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Ea.th a.d Pla.eta.y Phys.cs 2024年第1期8卷 247-257页

作者： a.Ohma.M.Ma.ela.re K.M.La.nda. j.P.Reis.a. s.M.Ha.ch s.Ga.pa.ini s.j.Wa.ker Birkela.d Centre for s.a.e s.ience Department of Physics and TechnologyUniversity of BergenBergenNorway

Globa. ima.es.of a.rora. obta.ned by ca.era. on s.a.ecra.t a.e a.key tool for s.udying the nea.-Ea.th ***,the ca.era. a.e s.ns.tive not only to a.rora. emis.ions.produced by precipita.ing pa.ticles.but a.s. to da.glow emis.ions.produced by photoelectrons.induced by *** emis.ions.a.d s.a.tered s.nlight ca. contribute to the ba.kground *** fully utilize s.ch ima.es.in s.a.e s.ience,ba.kground conta.ina.ion mus. be removed to is.la.e the a.rora. *** we outline a.da.a.driven a.proa.h to modeling the ba.kground intens.ty in multiple ima.es.by formula.ing linea. invers. problems.ba.ed on B-s.lines.a.d s.herica. *** a.proa.h is.robus.,flexible,a.d itera.ively des.lects.outliers.s.ch a. a.rora. *** fina. model is.s.ooth a.ros. the termina.or a.d a.counts.for s.ow tempora. va.ia.ions.a.d la.ge-s.a.e a.ymmetries.in the *** demons.ra.e the model by us.ng the three fa. ultra.iolet ca.era. on the Ima.er for Ma.netopa.s.-to-a.rora.Globa. Explora.ion(IMa.E)*** method ca. be a.plied to his.orica. mis.ions.a.d is.releva.t for upcoming mis.ions.s.ch a. the s.la. wind Ma.netos.here Ionos.here Link Explorer(s.ILE)mis.ion.

关键词： a.rora da.glow modeling globa. a.rora. ima.es fa. ultra.iolet ima.es da.glow remova.

Ma.hema.ica. modeling a.d s.mula.ions.of s.res. mitiga.ion by coa.ing polycrys.a.line pa.ticles.in lithium-ion ba.teries

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a.plied Ma.hema.ics.a.d Mecha.ics.Englis. Edition) 2024年第6期45卷 947-962页

作者： N.IQBa. j.CHOI s.F.s.a. C.LEE s.LEE Depa.tment of Mecha.ica. Roboticsand Energy EngineeringDongguk University-SeoulSeoul 04620Republic of Korea

a.chemo-mecha.ica. model is.developed to inves.iga.e the effects.on the s.res. development of the coa.ing of polycrys.a.line Ni-rich LiNixMnyCo_(z)O_(2)(x≥0.8)(NMC)pa.ticles.with poly(3,4-ethylenedioxythiophene)(PEDOT).The s.mula.ion res.lts.s.ow tha. the coa.ing of prima.y NMC pa.ticles.s.gnifica.tly reduces.the s.res. genera.ion by efficiently a.commoda.ing the volume cha.ge a.s.cia.ed with the lithium diffus.on,a.d the coa.ing la.er pla.s.roles.both a. a.cus.ion a.a.ns. the volume cha.ge a.d a.cha.nel for the lithium tra.s.ort,promoting the lithium dis.ribution a.ros. the s.conda.y pa.ticles.more ***,the lower s.iffnes.,higher ionic conductivity,a.d la.ger thicknes. of the coa.ing la.er improve the s.res. *** pa.er provides.a.ma.hema.ica. fra.ework for ca.cula.ing the chemo-mecha.ica. res.ons.s.of a.is.tropic electrode ma.eria.s.a.d funda.enta. ins.ghts.into how the coa.ing of NMC a.tive pa.ticles.mitiga.es.s.res. levels.

关键词： lithium-ion ba.tery(LIB) polycrys.a.line pa.ticle coa.ing finite element s.mula.ion Ni-rich LiNixMnyCo_(z)O_(2)(x>0.8)(NMC)

Ma.hema.ica. modelling of ba.l a.d pla.e s.s.em with experimenta. a.d correla.ion function-ba.ed model va.ida.ion

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Control Theory a.d Technology 2024年第2期22卷 326-341页

作者： T.R.Dil Kuma. s.j.Mija Depa.tment of Electrica. Engineering National Institute of Technology CalicutKozhikode673601KeralaIndia

The ba.l a.d pla.e s.s.em is.a. inherently nonlinea. under a.tua.ed benchma.k s.s.em us.d for va.ida.ing the performa.ce of va.ious.control s.hemes. a.ma.hema.ica. model depicting the dyna.ics.clos. to tha. of the s.s.em is.very much required for s.ch a.tes. bed. In this.corres.ondence, the complete nonlinea. model, a.s.mplified nonlinea. model, a.d a.linea.ized model of the ba.l a.d pla.e s.s.em a.e developed. The s.s.em compris.s.a.ba.l a.d pla.e mecha.is. a.d a.rota.y s.rvo unit. The ba.l a.d pla.e mecha.is. is.modelled us.ng the Euler–La.ra.ge method, wherea. the rota.y s.rvo s.bs.s.em is.modelled from the firs. principles. The nonlinea. model of the combined s.s.em is.developed by including the dyna.ics.of the s.rvo motor with gea. a.d rolling res.s.a.ce between the ba.l a.d the pla.e. The s.mplified nonlinea. model of the s.s.em is.obta.ned with s.ita.le a.s.mptions. The model is.linea.ized a.ound the opera.ing point us.ng the ja.obia.. The va.idity of the developed models.is.inves.iga.ed through correla.ion function a.a.ys.s. The open-loop res.ons. of the three models. viz., nonlinea., s.mplified nonlinea., a.d linea.ized models. is.a.a.yzed in the Ma.La./s.mulink pla.form. s.nce the open-loop s.s.em is.uns.a.le, the experimenta. va.ida.ion of the model is.performed with a.double-loop Ps. (pa.ticle s.a.m optimiza.ion) PID control s.heme.

关键词： Ba.l a.d pla.e s.s.em Correla.ion function Model va.ida.ion Pa.ticle s.a.m optimiza.ion(Ps.) Ps. PID controller

Wetta.ility,rea.tivity,a.d interfa.e s.ructure in Mg/Ni s.s.em

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journa. of Ma.nes.um a.d a.loys 2024年第2期12卷 659-672页

作者： s.Terlicka.N.s.bcza. Ł.Ma. P.Da.ła. j.j.s.bcza. Ins.itute of Meta.lurgy a.d Ma.eria.s.s.ience Polish Academy of Sciences25 Reymonta Str.KrakowPoland Fa.ulty of Foundry Engineering AGH University23 Reymonta Str.KrakowPoland

The s.s.ile drop method wa. a.plied to the experimenta. inves.iga.ion of the wetting a.d s.rea.ing beha.iors.of liquid Mg drops.on pure Ni *** compa.is.n,the experiments.were performed in two va.ia.ts.(1)us.ng the Ca.illa.y Purifica.ion(CP)procedure,which a.lows.the non-conta.t hea.ing a.d s.ueezing of a.pure oxide-free Mg drop;(2)by cla.s.ca. Conta.t Hea.ing(CH)*** high-tempera.ure tes.s.were performed under is.therma. conditions.CP:760℃for 30 s.CH:715℃for 300 s.us.ng a.+5 wt%H_(2) *** the s.s.ile drop tes.s.ima.es.of the Mg/Ni couples.were recorded by CCD ca.era.(57 fps.,which were then a.plied to ca.cula.e the conta.t a.gles.of meta./s.bs.ra.e *** a.d tra.s.is.ion electron micros.opy a.a.ys.s.both coupled with energy-dis.ers.ve X-ra. s.ectros.opy,were us.d for deta.led s.ructura. cha.a.teriza.ion of the s.lidified *** wa. found tha. a. oxide-free Mg drop obta.ned by the CP procedure s.owed a.wetting phenomenon on the Ni s.bs.ra.e(a. a.era.e conta.t a.gleθs.,followed by fa.t s.rea.ing a.d good wetting over the Ni s.bs.ra.e(θ_((CP))~20°in 5 s.to form a.fina. conta.t a.gle ofθ_(f(CP))~18°.In contra.t,a.different wetting beha.ior wa. obs.rved for the CH procedure,where the una.oida.le prima.y oxide film on the Mg s.rfa.e blocked the s.rea.ing of liquid Mg s.owing a.pa.ently non-wetting beha.ior a.ter 300 s.conta.t a. the tes. ***,in both ca.es.the deep cra.ers.formed in the Ni s.bs.ra.es.under the Mg drops.a.d s.gnifica.t cha.ge in the s.ructure of initia.ly pure Mg drops.to Mg-Ni a.loys.s.gges. a.s.rong dis.olution of Ni in liquid Mg a.d a.pa.ent va.ues.of the fina. conta.t a.gles.mea.ured for the Mg/Ni s.s.em.

关键词： Ma.nes.um-ba.ed a.loys s.s.ile drop tes.s Ca.illa.y purifica.ion procedure Wetta.ility Rea.tivity Conta.t a.gle

Thermo-kinetic cha.a.teris.ics.on s.a.ilizing hetero-pha.e interfa.e of meta. ma.rix compos.tes.by crys.a. pla.ticity finite element method

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journa. of Ma.eria.s.s.ience & Technology 2024年第2期169卷 53-67页

作者： Y.B.Zha.g s.j.s.ng F.Liu s.a.e Key La.ora.ory of s.lidifica.ion Proces.ing Northwestern Polytechnical UniversityXi’an 710072China a.a.ytica.&Tes.ing Center Northwestern Polytechnical UniversityXi’an 710072China

Us.ng dis.oca.ion-ba.ed cons.itutive modeling in three-dimens.on crys.a. pla.ticity finite element(3D CPFE)s.mula.ions.co-deforma.ion a.d ins.a.ility of hetero-pha.e interfa.e in different ma.eria. s.s.ems.were herein s.udied for polycrys.a.line meta. ma.rix compos.tes.MMCs..Loca. s.res. a.d s.ra.n fields.in two types.of 3la.er MMCs.s.ch a. fcc/fcc Cu-a. a.d fcc/bcc Cu-Nb ha.e been predicted under s.mple compres.ive ***,more s.vere s.ra.n-induced interfa.e ins.a.ility ca. be obs.rved in the fcc/bcc s.s.ems.tha. in the fcc/fcc s.s.ems.upon refining to meta.lic na.ola.ered compos.tes.MNCs..By deta.led a.a.ys.s.of s.res. a.d s.ra.n loca.iza.ion,it ha. been demons.ra.ed tha. the interfa.e ins.a.ility is.a.wa.s.a.compa.ied by high-s.res. concentra.ion,i.e.,thermodyna.ic cha.a.teris.ics.or high s.ra.n prevention i.e.,kinetic cha.a.teris.ics.a. the hetero-pha.e *** then follows.tha. the thermodyna.ic driving forceG a.d the kinetic energy ba.rier Q during dis.oca.ion a.d s.ea. ba.ding ca. be a.opted to cla.s.fy the deforma.ion modes.following the s.-ca.led thermo-kinetic *** by ins.rting a.high dens.ty of high-energy interfa.es.into the Cu-Nb compos.tes.s.ch thermo-kinetic integra.ion a. the hetero-pha.e interfa.e a.lows.a.s.cces.ful es.a.lis.ment of MMCs.with the high△G-high Q deforma.ion mode,which ens.res.high ha.dening a.d uniform s.ra.n dis.ri-bution,thus.efficiently s.ppres.ing the s.ea. ba.d,s.a.ilizing the hetero-pha.e interfa.e,a.d obta.ning a. exceptiona. combina.ion in s.rength a.d *** hetero-pha.e interfa.e chos.n by a.couple of thermodyna.ics.a.d kinetics.ca. be defined a. brea.ing the thermo-kinetic correla.ion a.d ha. been propos.d for a.tificia.ly des.gning MNCs.

关键词： Thermodyna.ics.a.d kinetics Phys.cs.ba.ed cons.itutive modeling Hetero-pha.e interfa.e Crys.a. pla.ticity finite element