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Determ.na.ion of interfa.e sta.es a.d th.ir tim. consta.t for a./SnO_2 /n-Si (m.S) ca.a.itors using a.m.tta.ce m.a.urem.nts

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Ch.nese Ph.sics B 2013年第4期22卷 429-433页

作者： h. m. Ba.a. a. Ta.a.oglu Depa.tm.nt of Ph.sics Faculty of Arts and Sciences Gazi University

Th. frequency dependence of a.m.tta.ce m.a.urem.nts （ca.a.ita.ce–volta.e （C–V ） a.d conducta.ce–volta.e （G/ω–V ）） of a./SnO2 /n-Si （m.S） ca.a.itors wa. investiga.ed by ta.ing into a.count th. effects of th. interfa.e sta.es （N ss ） a.d series resista.ce （Rs ） a. room.tem.era.ure. a.m.tta.ce m.a.urem.nts were ca.ried out in frequency a.d bia. volta.e ra.ges of 1 kh.–1 m.0} a.d （ 5V）–（＋9V）, respectively. Th. va.ues of N ss a.d R s were determ.ned by using a.conducta.ce m.th.d a.d estim.ting from.th. a.m.tta.ce m.a.urem.nts of th. m.S ca.a.itors. a. low frequencies, th. interfa.e sta.es ca. follow th. a. signa. a.d yield excess ca.a.ita.ce a.d conducta.ce. In a.dition, th. pa.a.lel conducta.ce （G p /ω） versus log（f） curves a. va.ious volta.es include a.pea. due to th. presence of interfa.e sta.es. It is observed th.t th. N ss a.d th.ir tim. consta.t （τ） ra.ge from.1.23 ×10 12 eV-1 ·cm.2 to 1.47 ×10 12 eV-1 ·cm.2 a.d from.7.29 ×10-5 s to 1.81 ×10-5s, respectively.

关键词： m.S ca.a.itor a.m.tta.ce m.a.urem.nts interfa.e sta.es

Effects of th. trim.da. ra.dom.field on th. m.gnetic properties of a.spin-1 Ising na.otube

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Ch.nese Ph.sics B 2013年第11期22卷 445-452页

作者： h. m.goussi a. Za.m.m. Keroua. La.ora.oire Ph.sique des m.te'ria.x et m.de'lisa.ion des Syste`m.s (LP2m.) Unite' Associe'e au CNRST-URAC:08 University Moulay Ismail Faculty of Sciences B.P. 11201 Zitoune

In th.s work, th. h.steresis beh.vior of a.na.otube, consisting of a.ferrom.gnetic core of spin-1 a.om. surrounded by a.ferrom.gnetic sh.ll of spin-1 a.om. with.ferro-or a.ti-ferrom.gnetic interra.ia. coupling is studied in th. presence of a.ra.dom.m.gnetic field. Ba.ed on a.proba.ility distribution m.th.d, th. effective-field th.ory h.s been used to investiga.e th. effects of th. ra.dom.m.gnetic field, th. interfa.ia. coupling consta.t, a.d th. tem.era.ure on th. h.steresis loops of th. na.otube. Som. ch.ra.teristic beh.viors h.ve been found, such.a. th. existence of double or triple h.steresis loops for a.propria.e va.ues of th. system.pa.a.4}ters. Th. rem.nent m.gnetiza.ion a.d th. coercive field, a. functions of th. tem.era.ure, a.e exa.4}ned.

关键词： effective-field th.ory na.otube critica. ph.nom.na

Investiga.ion of m.crostructure, Na.ura. Frequencies a.d Vibra.ion m.des of Dra.onfly Wing

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Journa. of Bionic Engineering 2011年第2期8卷 165-173页

作者： h. Ra.a.i m. m.gh.da.1} a. Da.vizeh Fa.ulty of Engineering lslamic Azad University Lahijan Branch Lahijan Iran Depa.tm.nt of m.ch.nica. Engineering University of Guilan P.O. Box 3756 Rasht Iran

In th. present work, a.th.rough.investiga.ion on th. m.crostructura. a.d m.rph.logica. a.pects of dra.onfly wings wa. ca.ried out using sca.ning electron m.croscope. Th.n, ba.ed on th.s study a.d th. previous reports, a.precise th.ee-dim.nsiona. num.rica. m.del wa. developed a.d na.ura. frequencies a.d vibra.ion m.des of dra.onfly forewing were determ.ned by finite elem.nt m.th.d. Th. results sh.wn th.t dra.onfly wings a.e m.de of a.series of a.a.tive m.teria.s, wh.ch.form.a.very com.lex com.osite structure. Th.s bio-com.osite fa.rica.ion h.s som. unique fea.ures a.d potentia. benefits. Furth.rm.re, th. num.rica. results sh.w th.t th. first na.ura. frequency of dra.onfly wings is a.out 168 h. a.d bending is th. predom.na.t deform.tion m.de in th.s sta.e. Th. a.cura.y of th. present a.a.ysis is verified by com.a.ison of ca.cula.ed results with.experim.nta. da.a. Th.s pa.er m.y be h.lpful for m.cro a.ria. veh.cle design concerning dyna.4}c response.

关键词： insect wing na.ura. frequency vibra.ion m.de SEm finite elem.nt m.th.d

Effect of electrolyte tem.era.ure on th. na.o-ca.bonitride la.er fa.rica.ed by surfa.e na.ocrysta.liza.ion a.d pla.m. trea.m.nt on a.γ-Tia. a.loy

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Ra.e m.ta.s 2009年第5期28卷 454-459页

作者： m. a.iofkh.zra.i a. Sa.our Rouh.gh.a.0}h. h.ssa.neja. Depa.tm.nt of m.teria.s Engineering Faculty of Engineering Tarbiat Modares University

Th. distribution of na.o-ca.bonitrides produced by th. trea.m.nts of surfa.e na.ocrysta.liza.ion a.d pla.m. electrolytic ca.bonitriding on a.γ-Tia. wa. investiga.ed by m.a.s of figure a.a.ysis. Th. skewness a.d kurtosis of Ga.ssia. sh.pe distribution curves were studied a.d th. effect of electrolyte tem.era.ure wa. determ.ned. Th. usa.e of lower tem.era.ures of th. electrolyte is m.re suita.le for a.h.eving lower sizes of com.lex na.o-ca.bonitrides. Th. surfa.e rough.ess of trea.ed sa.2}les wa. m.a.ured a.d it wa. observed th.t th.re is a. optim.m.level of electrolyte tem.era.ure for surfa.e rough.ess increa.e （difference between two m.a.ured da.a..

关键词： ca.bonitride electrolyte tem.era.ure na.ostructures pla.m. electrolytic deposition rough.ess γ-Tia.

Copper biosorption on im.obilized sea.eed biom.ss:Colum. brea.th.ough.ch.ra.teristics

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Journa. of Environm.nta. Sciences 2007年第8期19卷 928-932页

作者： K. h. Ch. m. a. h.sh.m h.neywell Process Solutions 17 Changi Business Park Central 1 Singapore 486073. Depa.tm.nt of Ch.m.ca. Engineering University of Malaya 50603 Kuala Lumpur Malaysia

Th. biosorption of copper by th. brown sea.eed Sa.ga.sum.ba.cula.ia. im.obilized onto polyvinyl a.coh.l （PVa. gel bea.s, wa. investiga.ed with.fixed-bed experim.nts. La.ora.ory-sca.e colum. tests were perform.d to determ.ne brea.th.ough.curves with.va.ying flow ra.es a.d feed concentra.ions. a.th.oretica. fixed-bed m.del, known a. th. Boh.rt-a.a.2} equa.ion, wa. eva.ua.ed in sim.la.ing th. experim.nta. brea.th.ough.curves. Th. Boh.rt-a.a.2} m.del qua.ita.ively predicted th. brea.th.ough.trends. PVa. im.obilized sea.eed biom.ss bea.s were a.2}na.le to efficient regenera.ion with.a.ueous solution conta.ning th. ch.la.ing a.ent eth.lenedia.2}netetra.cetic a.id （EDTa.. Th. biosorbent reta.ned m.st of its origina. upta.e ca.a.ity over th.ee cycles of use. Th. excellent reusa.ility of th. biosorbent could lea. to th. developm.nt of a.via.le m.ta. rem.dia.ion tech.ology.

关键词： a.sorption biosorption fixed bed im.obilized a.ga. polyvinyl a.coh.l

Ca.ity control a. a.new qua.tum.a.gorith.s im.lem.nta.ion trea.m.nt

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Frontiers of ph.sics 2018年第1期13卷 187-199页

作者： m. a.uGh.nem.a. h. h.m.d m. a.del-a.y University of Science a.d Tech.ology Zewail City of Science and Technology Giza 12588 Egypt Depa.tm.-nt of m.th.m.tics Faculty of Science Ain-Shams University Cairo 11566 Egypt Fa.ulty of Science Al-Azhar University Assiut 71524 Egypt

Ba.ed on recent experim.nts [Na.ure 449, 438 （2007） a.d Na.ure Ph.sics 6, 777 （2010）], a.new a.proa.h.for rea.izing qua.tum.ga.es for th. design of qua.tum.a.gorith.s wa. developed. a.cordingly, th. opera.ion tim.s of such.ga.es wh.le functioning in a.gorith. a.plica.ions depend on th. num.er of ph.tons present in th.ir resona.t ca.ities. m.lti-qubit a.gorith.s ca. be rea.ized in system. in wh.ch.th. ph.ton num.er is increa.ed sligh.ly over th. qubit num.er. In a.dition, th. tim. required for opera.ion is considera.ly less th.n th. deph.sing a.d rela.a.ion tim.s of th. system.. Th. contextua. use of th. ph.ton num.er a. a.m.in control in th. rea.iza.ion of a.y a.gorith. wa. dem.nstra.ed. Th. results indica.e th. possibility of a.full integra.ion into th. rea.iza.ion of m.lti-qubit m.ltiph.ton sta.es a.d its a.plica.ion in a.gorith. designs. Yh.th.rm.re, th.s a.proa.h.will lea. to a.successful im.lem.nta.ion of th.se designs in future experim.nts.

关键词： qua.tum.com.uta.ion qua.tum.a.gorith.s im.lem.nta.ion ca.ity control

SIm.La.ITY SOLUTIONS FOR VISCOUS Ca.ITa.ING VORTEX CORES

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Journa. of h.drodyna.1}cs 2008年第6期20卷 679-688页

作者： BOSSCh.RS J Ja.SSEN a. a. h.EIJm.KERS h. W. m. m.ritim. Resea.ch.Institute Neth.rla.ds (m.RIN) P.O. Box 28 6700 AA Wageningen The Netherlands University of Twente Enschede The Netherlands

Th.oretica. a.a.ysis of th. dyna.2}c beh.vior of ca.ita.ing vortices requires knowledge of th. velocity distribution in th. vortex core. For th.t rea.on a. existing sim.la.ity m.del for slender a.isym.etric non-ca.ita.ing vortex cores h.s been extended with.th. viscous bounda.y conditions for a.ca.ita.ing vortex. Ca.ita.ing sim.la.ity solutions exist for a.vortex of wh.ch.both.core dia.2}ter a.d circula.ion grow with.th. squa.e root of th. a.ia. coordina.e. Results for th.s m.del a.e presented for va.ying ca.ita.ion num.ers a.d Reynolds num.ers. It is sh.wn th.t viscosity m.y h.ve a.significa.t influence on th. velocity distribution a.ound a.ca.ita.ing vortex.

关键词： ca.ita.ion vortex viscous flow

Wa.e pa.sa.e a.d incoh.rency effects on seism.c response of h.gh.a.ch.da.1}

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Ea.th.ua.e Engineering a.d Engineering Vibra.ion 2012年第4期11卷 567-578页

作者： h. m.rza.ozorg m. a.ba.i m. a. h.riri a.debili Depa.tm.nt of Civil Engineering K.N.Toosi University of Technology

Th. effects ofincoh.rency a.d wa.e-pa.sa.e on th. nonlinea. responses of concrete a.ch.da.4} a.e investiga.ed in th.s study. a.double curva.ure a.ch.da.4}is selected a. a.num.rica. exa.4}le. Th. reservoir is m.deled a. a.com.ressible m.teria. a.d th. founda.ion is m.deled a. a.m.ssless m.dium. Ground m.tion tim.-h.stories a.e a.tificia.ly genera.ed using th. m.nte Ca.lo sim.la.ion a.proa.h. Four different finite elem.nt m.dels （FEm. a.e considered： uniform.excita.ion; incoh.rence effect; wa.e pa.sa.e effect; a.d both.incoh.rence a.d wa.e pa.sa.e effects. It wa. revea.ed th.t m.deling m.ltiple-supports excita.ion could h.ve a.significa.t im.a.t on th. structura. response of th. da.4}by inducing a.pseudo-sta.ic effect. a.so, it wa. concluded th.t th. coh.rency effect oversh.dows th. wa.e pa.sa.e effect a.d th. results obta.ned from.non-uniform.excita.ion of FEm. including th. wa.e pa.sa.e effect, is close to th. results of th. FEm.wh.n it is uniform.y excited.

关键词： concrete a.ch.da. incoh.rency nonlinea. a.a.ysis wa.e pa.sa.e

Investiga.ion of sedim.nt tra.sport pa.tern a.d bea.h.m.rph.logy in th. vicinity of subm.rged groyne （ca.e study： Da.1}ne Sa. Sefidrood）

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Frontiers of Structura. a.d Civil Engineering 2015年第1期9卷 82-90页

作者： h. a.soos BIRIa.m. a. La.h.eh.NESh.EI a. Gh.BRa.I m. a. m.h.Da. m.rine structure engineer University of Guilan Rasht Iran Depa.tm.nt of Civil Engineering University of Guilan Rasht Iran

m.rine structures, such.a. Groynes, Sea.wa.ls a.d Deta.h.d Brea.wa.ers, a.e constructed in coa.t of a.ea.to im.rove coa.t sta.ility a.a.nst bed erosions due to ch.nging wa.e a.d current pa.tern. m.rine m.ch.nism. a.d intera.tion with.th. h.dra.lic structures need to be intensively studied. Groynes a.e one of th. m.st prom.nent structures th.t a.e used in sh.re protection a.d littora. sedim.nt. Th. m.in h.dra.lic function of th. groyne is to control th. long sh.re current a.d littora. sedim.nt tra.sport. Th.s structure ca. be subm.rged a.d provide th. necessa.y bea.h.protection with.ut nega.ive a.sth.tic im.a.t. h.wever, for subm.rged structures a.opted for bea.h.protection, th. sh.reline response to th.se structures is not well understood. Th. objective of th.s study is to predict sedim.nt tra.sport in th. vicinity of subm.rged groyne a.d com.a.ison with.non-subm.rged groyne focusing on a.pa.t of th. coa.t a. Da.1}ne Sa. Sefidrood, Guila. Province, Ira., wh.re serious coa.t erosion h.s been occurred. Th. sim.la.ions were designed using a.one-line m.del wh.ch.ca. be used a. a.first a.proxim.tion of sh.reline prediction in th. vicinity of groyne. Th. results of th. proposed m.del a.e com.a.ed with.experim.nta. da.a.to determ.ne th. sh.pe of th. coa.t. Th. results of predicted bea.h.deform.tion sh.w th.t wh.n subm.rged groyne construct in th. bea.h. sedim.nt a.cum.la.ion will be sligh.ly less th.n th. non-subm.rged groyne; beca.se tra.sfer coefficient for th. subm.rged groyne is m.re th.n non-subm.rged groyne. Th.s result will ca.se m.re sedim.nt pa.sing on subm.rged groyne. Fina.ly, th. result of th. present study sh.w th.t using subm.rged groyne is a. efficient wa. to control th. sedim.nt a.d bea.h.erosion with.ut ca.sing severe environm.nta. effect on th. coa.t.

关键词： subm.rged groyne non-subm.rged groyne bea.h.m.rph.logy Da.0}ne Sa. Sefidrood sedim.nt tra.sport