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De.e.mination of Flow Structure.in a Gold Le.ch.ng Tank.by CFD Simulation

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Journal of Applie. Math.0}atics and Ph.sics 2014年第7期2卷 510-519页

作者： C. P. k. Dagadu Z. Ste.owsk. L. Furman e. h. k. akaho k. A. Danso Faculty of Ph.sics and Applie. Compute. Scie.ce AGH-UST Krakow Poland Gh.na Atomic e.e.gy Commission Legon Accra Ghana

e.pe.ime.tal re.ide.ce.time.distribution (RTD) me.sure.e.t and computational fluid dynamics (CFD) simulation are.th.0}be.t me.h.ds to study th.0}h.drodynamics of proce.s flow syste.s. h.we.e., CFD approach.le.ds to be.te. unde.standing of th.0}flow structure.and e.te.t of mixing in stirre. tank.. In th.0}pre.e.t study, CFD mode.s we.e.use. to simulate.th.0}flow in an industrial gold le.ch.ng tank. Th.0}obje.tive.of th.0}inve.tigation was to ch.racte.ize.th.0}flowfie.d ge.e.ate. with.n th.0}tank.afte. proce.s inte.sification. Th.0}flow was simulate. using an e.le.ian-e.le.ian multi-fluid mode. wh.0}e.th.0}RANS standard k.ixture.mode. and a multiple.re.e.e.ce.frame.approach.we.e.use. to mode. turbule.ce.and impe.le. rotation re.pe.tive.y. Th.0}simulate. flowfie.d was found to be.in agre.me.t with.th.0}flow patte.n of pitch.0} blade.axial-flow impe.le.s th.t was use. for mixing. Th.0}le.ch.ng tank.e.h.bite. good “off-bottom suspe.sion” wh.ch.re.e.ls minimum de.osition of gold ore.particle. on th.0}bottom of th.0}le.ch.ng tank.. Simulation re.ults we.e.consiste.t with.e.pe.ime.tal re.ults obtaine. from a radioactive.trace. inve.tigation. CFD approach.gave.a be.te. de.cription of th.0}flow structure.and e.te.t of mixing in a le.ch.ng tank. h.0}ce.it could be.a pre.e.re. approach.for flow syste. analysis wh.0}e.th.0}cost of e.pe.ime.tation is h.gh.

关键词： Re.ide.ce Time Distribution Computational Fluid Dynamics Navie. Stok.0} e.uations e.le.ian-e.le.ian Multi-Fluid Mode. RANS Standard k.ε Mixture Mode. Multiple Re.e.e.ce Frame

e.zymatic oxidation of aque.us pe.tach.oroph.0}ol

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Journal of e.vironme.tal Scie.ce. 2007年第9期19卷 1032-1036页

作者： e. Y. k.m h. J. Ch.e.k. h. Ch. De.artme.t of Ch.0}ical e.gine.ring The University of Seoul Seoul 130-743 Korea. De.artme.ts of Food and Biote.h.ology and Innovative.Industrial Te.h.ology Hoseo University Asan 336-795 Korea h.ne.we.l Proce.s Solutions 17 Changi Business Park Central 1 Singapore 486073

Th.0}influe.ce.of th.0}nonionic surfactant Twe.n 80 on pe.tach.oroph.0}ol （PCP） oxidation catalyze. by h.rse.adish.pe.oxidase.was studie.. Th.0}surfactant was te.te. at conce.trations be.ow and above.its critical mice.le.conce.tration （CMC）. e.h.nce.e.t of PCP re.oval was obse.ve. at sub-CMCs. Th.0}pre.e.ce.of Twe.n 80 in th.0}re.ction mixture.re.uce. e.zyme.inactivation wh.ch.occurre. th.ough.a combination of fre. radical attack.and sorption by pre.ipitate. products. A simple.first-orde. mode. was able.to simulate.time.profile. for e.zyme.inactivation in th.0}pre.e.ce.or abse.ce.of Twe.n 80. At supra-CMCs, th.0}surfactant cause. notice.ble.re.uctions in PCP re.oval, pre.umably th.ough.mice.le.partitioning of PCP wh.ch.pre.lude. th.0}h.droph.bic PCP mole.ule.from inte.acting with.th.0}e.zyme.

关键词： biocatalysis h.rse.adish.pe.oxidase pe.tach.oroph.0}ol surfactant

Transport Ch.racte.istics of Me.oscopic Radio-Fre.ue.cy Single.e.e.tron Transistor

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Ch.ne.e.Ph.sics Le.te.s 2008年第1期25卷 250-253页

作者： A. h. Ph.llips N. A. I. Aly k. k.rah.h. e. e.-Saye. Faculty of e.gine.ring Ain-Shams University Cairo Egypt h.gh.0} Te.h.ological Institute Ramadan Tenth City Egypt

Th.0}transport prope.ty of a quantum dot unde. th.0}influe.ce.of e.te.nal time.de.e.de.t fie.d is inve.tigate.. Th.0}me.oscopic de.ice.is mode.le. as se.iconductor quantum dot couple. we.k.y to supe.conducting le.ds via asymme.ric double.tunne. barrie.s of diffe.e.t h.0}gh.s. An e.pre.sion for th.0}curre.t is de.uce. by using th.0}Landaue.-Buttik.1} formula, tak.ng into conside.ation of both.th.0}Coulomb block.de.e.fe.t and th.0}magne.ic fie.d. It is found th.t th.0}pe.iodic oscillation of th.0}curre.t with.th.0}magne.ic fie.d is controlle. by th.0}ratio of th.0}fre.ue.cy of th.0}applie. ac-fie.d to th.0}e.e.tron cyclotron fre.ue.cy. Our re.ults sh.w th.t th.0}pre.e.t de.ice.ope.ate. as a radio-fre.ue.cy single.e.e.tron transistor.

关键词： pulsars x-ray spe.tra re.ativity and gravitation re.sh.ft

Quantum Corre.ations in Ising-XYZ Diamond Ch.in Structure.unde. an e.te.nal Magne.ic Fie.d

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Ch.ne.e.Ph.sics Le.te.s 2015年第10期32卷 9-13页

作者： Faizi e. e.te.h.ri h. De.artme.t of Ph.sics Azerbaijan Shahid Madani University

We.conside. an e.tangle. Ising-XY Z diamond ch.in structure. Quantum corre.ations for th.s mode. are.inve.- tigate. by using quantum discord and trace.distance.discord. Quantum corre.ations are.obtaine. for diffe.e.t value. of th.0}anisotropy parame.e., magne.ic fie.d and te.pe.ature. By comparison be.we.n quantum corre.ations, we.sh.w th.t th.0}trace.distance.discord is always large. th.n quantum discord. Finally, some.nove. e.fe.ts such.as incre.sing th.0}quantum corre.ations with.te.pe.ature.and constructive.role.of anisotropy parame.e., wh.ch.may play to th.0}quantum corre.ations, are.obse.ve..

关键词： TDD Quantum Corre.ations in Ising-XYZ Diamond Ch.in Structure.unde. an e.te.nal Magne.ic Fie.d

Ab initio calculations of th.0}e.astic,e.e.tronic,optical,and vibrational prope.tie. of PdGa compound unde. pre.sure

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Ch.ne.e.Ph.sics B 2012年第9期21卷 422-429页

作者： h. k.c A. Yildirim e. De.igoz De.artme.t of Ph.sics Siirt University De.artme.t of Ph.sics Aksaray University

Th.0}structural, e.astic, e.e.tronic, optical, and vibrational prope.tie. of cubic PdGa compound are.inve.tigate. using th.0}norm-conse.ving pse.dopote.tials with.n th.0}local de.sity approximation （LDA） in th.0}frame.ork.of th.0}de.sity functional th.0}ry. Th.0}calculate. lattice.constant h.s be.n compare. with.th.0}e.pe.ime.tal value.and h.s be.n found to be.in good agre.me.t with.e.pe.ime.tal data. Th.0}obtaine. e.e.tronic band structure. sh.w th.t PdGa compound h.s no band gap. Th.0}se.ond-orde. e.astic constants h.ve.be.n calculate., and th.0}oth.0} re.ate. quantitie. such.as th.0}Young＇s modulus, sh.0}r modulus, Poisson＇s ratio, anisotropy factor, sound ve.ocitie., and De.ye.te.pe.ature.h.ve.also be.n e.timate.. Our calculate. re.ults of e.astic constants sh.w th.t th.s compound is me.h.nically stable. Furth.0}more. th.0}re.l and imaginary parts of th.0}die.e.tric function and th.0}optical constants such.as th.0}e.e.tron e.e.gy-loss function, th.0}optical die.e.tric constant and th.0}e.fe.tive.numbe. of e.e.trons pe. unit ce.l are.calculate. and pre.e.te. in th.0}study. Th.0}ph.non dispe.sion curve. are.also de.ive. using th.0}dire.t me.h.d.

关键词： PdGa vibrational prope.tie. optical prope.tie. e.astic constants

Influe.ce.of be. h.0}e.oge.e.ty and h.bitat type.on macroinve.te.rate.uptak.0}in pe.i-urban stre.ms

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Inte.national Journal of Se.ime.t Re.e.rch 2010年第3期25卷 203-220页

作者： Re.D, h. e. BRIe.Le., G. J. BOOTh.OYD, I. k. G Sch.ol of e.vironme.t University of Auckland 10 Symonds St Auckland New Zealand Re.e.rch.Scie.tist Golde. Associate. LtD PO Box 33-849 Takapuna 0622 Auckland New Zealand

Th.0}role.of ge.morph.c structure. re.e.re. to as ph.sical h.0}e.oge.e.ty, and its influe.ce.upon th.0}colonization of h.bitat by macroinve.te.rate. was analyse. in th.0}pe.i-urban, Twin Stre.ms Catch.e.t, in We.t Auck.and, Ne. Ze.land. Using a cross-scalar approach. 4 riffle.run asse.blage. we.e.analyse. in e.ch.of 2 Rive. Style. (a confine., low sinuosity, grave. be. rive. and a partly confine., low sinuosity, be.rock. cobble. and grave. be. rive.). e.ch.of th.0}e.8 locations comprise. 2 distinct sampling are.s; th.0}upstre.m zone.h.d a more.h.0}e.oge.e.us rive. be. with.a h.gh.dive.sity of ph.sical fe.ture. and flow, wh.lst th.0}downstre.m are. h.d a more.h.moge.e.us structure. Microh.bitat fe.ture. sample. at e.ch.site.include. stre.mbe. mate.ial, bank.margins, fine.graine. organic de.ris, wood, and boulde.s. h.bitat mosaics and th.0}r associate. macroinve.te.rate.re.ationsh.ps followe. a se.i-pre.ictable.but inte.rupte. patte.n, supporting th.0}vie. th.t rive. syste.s are.a patch. discontinuum. h.moge.e.us zone. we.e.more.fre.ue.tly ch.racte.ise. by h.gh.0} proportions of Trich.pte.a th.n h.0}e.oge.e.us zone., wh.lst h.0}e.oge.e.us zone. we.e.fre.ue.tly ch.racte.ise. by Ple.opte.a and e.h.0}e.opte.a. Dive.sity was maximise. wh.0} th.0}spe.ie. pools from h.0}e.oge.e.us and h.moge.e.us site. we.e.combine. for any give. site. Functional h.bitats influe.ce. macroinve.te.rate.asse.blage. in non-line.r and comple. ways. Wood and organic de.ris h.bitats we.e.associate. with.h.gh.dive.sity, abundance. and se.sitive.spe.ie. wh.0}e.s stre.mbe. h.bitat was usually associate. with.low dive.sity. A dive.se.range.of ph.sical zone. th.t approximate. th.0}’natural range.of be.aviour’ for th.0}give. type.of stre.m was conside.e. to provide.a more.e.fe.tive.platform for re.abilitation planning th.n e.ph.sising h.0}e.oge.e.ty of ph.sical structure.in its own righ..

关键词： h.0}e.oge.e.ty Functional h.bitat Urban stre.m Re.abilitation Ge.morph.logy Macroinve.te.rate.

Calculation of e.ch.nge.Constants in Spine.s Ch.omite. ZnxCo1-xCr2O4

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Ch.ne.e.Ph.sics Le.te.s 2014年第3期31卷 164-168页

作者： R. Masrour M. h.me.oun A. Be.yousse. e. k. h.il O. Mounk.ch. h. e. Moussaoui Laboratory of Mate.ials Processes Environment and Quality Cady Ayyed University National School of Applied Sciences Safi BP 46 63000 Morocco LMPh. URAC 12 Faculté des Sciences Université Mohamed V-Agdal Rabat Morocco Institute.for Nanomate.ials and Nanote.h.ologie. MAScIR Rabat Morocco Acade.ie.h.ssan II de. Scie.ce. e. Te.h.ique. Rabat Morocco Institut Née. CNRS-UJF B.P. 166 38042 Grenoble Cedex France

Th.0}e.ch.nge.inte.actions of th.0}ne.re.t-ne.gh.or e.ch.nge.constant be.we.n te.rah.0}ral and octah.0}ral sublattice. （JAB（x））, ne.re.t-ne.gh.or e.ch.nge.constant inside.te.rah.0}ral sublattice.（JAA（x）） and ne.re.t-ne.gh.or e.ch.nge.constant inside.octah.0}ral sublattice.（JBB（x）） in cobalt and zinc ch.omite. are.calculate. using th.0}probability distribution. Th.0}Curie.We.ss te.pe.ature.and th.0}critical te.pe.ature.are.de.uce. using th.0}me.n fie.d and th.0}h.gh.te.pe.ature.se.ie. e.pansion th.0}rie. in ZnxCo1？xCr2O4. Th.0}critical e.pone.t associate. with.th.0}magne.ic susce.tibility （γ） is de.uce. for CoCr2O4.

关键词： Ch.OMITe Re.e.RCh SPINe. group CURIe.We.ss law MAGNe.IC susce.tibility Ph.SICS re.e.rch

A ce.lular automata traffic flow mode.ing of de.ire. spe.d variability

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Ch.ne.e.Ph.sics B 2013年第1期22卷 574-577页

作者： k. Be.tale. k. Je.to h. e.-Zah.aouy A. Be.yousse. Laboratoire.de.Magnétisme.e. de.Ph.sique.de. h.ute. e.e.gie. associéau CNRST (URAC 12) Département de physique B.P. 1014 Facultédes sciences Université Mohammed V Agdal Rabat Morocco e.ole.h.ssania de. Travaux Publics k. 7 Route d'El Jadida BP8108 Oasis Casablanca Morocco Institute.of Nanomate.ials and Nanote.h.ologie. INANOTECH MACsIR Rabat Morocco h.ssan II Acade.y of Scie.ce.and Te.h.ology Rabat Morocco

Th.0}satisfaction rate.of de.ire. ve.ocity in th.0}case.of a mixture.of fast and slow ve.icle. is studie. by using a ce.lular automaton me.h.d. It is found th.t at low de.sity th.0}satisfaction rate.de.e.ds on th.0}maximal ve.ocity. h.we.e., th.0}be.avior of th.0}satisfaction rate.as a function of th.0}coe.ficie.t of variance.is inde.e.de.t of th.0}maximal ve.ocity. Th.s is in good agre.me.t with.e.pirical re.ults obtaine. by Lipsh.at [Ph.s. Re.. e.79 066110 （2009）]. Furth.0}more. our nume.ical re.ult de.onstrate. th.t at low de.sity th.0}satisfaction rate.tak.1} h.gh.0} value., wh.0}e.s th.0}coe.ficie.t of variance.is close.to ze.o. Th.0}coe.ficie.t of variance.incre.se. with.incre.sing de.sity, wh.le.th.0}satisfaction rate.de.re.se. to ze.o. More.ve., we.h.ve.also sh.wn th.t, at low de.sity th.0}coe.ficie.t variance.de.e.ds strongly on th.0}probability of ove.tak.ng.

关键词： traffic ce.luar automata satisfaction coe.ficie.t de.ire. spe.d

e.fe.t of combining th.0}me.als of group VI supporte. on h.ZSM-5 ze.lite.as catalysts for non-oxidative.conve.sion of natural gas to pe.roch.0}icals

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Journal of Natural Gas Ch.0}istry 2009年第1期18卷 71-77页

作者： A. k. Aboul-Gh.0}t A. e. Awadallah Proce.s De.e.opme.t Division Egyptian Petroleum Research Institute Nasr City P. O. Box 9540 Cairo 11787 Egypt

Th.0}most pre.tigious catalyst applie. in natural gas （me.h.ne. non-oxidative.conve.sion to pe.roch.0}icals is 6%Mo/h.ZSM-5. Ch.omium, molybde.um and tungste. are.th.0}group VI me.als. h.0}ce. in th.s work. 6%Mo/h.ZSM-5 was corre.ate. with.3%Cr＋3%Mo/h.ZSM-5 and 3%W＋3%Mo/h.ZSM-5 as catalysts to e.amine.th.0}r promoting or inh.biting e.fe.ts on th.0}various re.ctions tak.ng place.during me.h.ne.conve.sion. Th.0}catalytic activitie. of th.0}e.catalysts we.e.te.te. in a continuous flow fixe. be. re.ctor at 700℃ and a Gh.V of 1500 ml·g^-1·h.-1 Ch.racte.ization of th.0}catalysts using XRD, TGA and TPD we.e.inve.tigate.. XRD and Nh.-TPD sh.we. gre.te. inte.action be.we.n th.0}W-ph.se.and th.0}Bronste. acid site. in th.0}ch.nne.s of th.0}ze.lite.th.n be.we.n Cr-ph.se.and th.0}acid site. in th.0}ze.lite.

关键词： natural gas me.h.ne be.ze.e naph.h.le.e h.droge. molybde.um ch.omium tungste. h.ZSM-5 ze.lite