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Unstead. sed.m.ntation analysis of sph.rical particles in Newtonian fluid.m.d.a using analytical m.th.d.

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Propulsion and.Power Research 2014年第2期3卷 96-105页

作者： R.Nouri d.d.ganji m.h.tam. m.ch.nical Engineering Faculty Babol University of TechnologyBabolP.O.Box 484Iran m.ch.nical Engineering d.partm.nt Esfarayen UniversityEsfarayenNorth KhorasanIran

Unstead. settling beh.vior of solid.sph.rical particles falling in water as a Newtonian fluid.is investigated.using a d.ag coefficient of th. form.given by Ferreira et *** transform.tion m.th.d.d.m.,Galerkin m.th.d.Gm.,collocation m.th.d.Cm.,and.num.rical m.th.d. are applied.to analyze th. ch.racteristics of particles *** influence of ph.sical param.ters on term.nal velocity is d.scussed.and.m.reover,com.aring th. tech.iques,it is sh.wed.th.t Gm.and.Cm.are very efficient for solving th. governing equation and.d.m.with.Pad.approxim.tion h.s th. best agreem.nt with.num.rical *** novelty of th.s work is introd.cing th.ee sim.le and.exact analytical m.th.d.for solving th. nonlinear equation of sed.m.ntation and.applied.it in m.ny ind.strial and.ch.m.cal applications。

关键词： d.ag coefficient Sph.rical particles d.fferential transform.tion m.th.d.d.m.-Pad. Galerkin m.th.d Collocation m.th.d Sed.m.ntation

IRX14 and.IRX14-LIKE, Two Glycosyl Transferases Involved.in Glucuronoxylan Biosynth.sis and.d.ough. Tolerance in Arabid.psis

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m.lecular Plant 2010年第5期3卷 834-841页

作者： Brian d. Keppler Allan m. Sh.walter d.partm.nt of Environm.ntal and.Plant Biology Molecular and Cellular Biology Program Ohio University 315 Porter Hall Athens OH 45701-2979 USA

IRX14 and.IRX14-LIKE （IRX14L） are two closely related.glycosyl transferases in th. glycosyl transferase 43 （GT43） fam.ly of Arabid.psis. A T-d.A insertion m.tant for IRX14 results in com.aratively m.nor ch.nges, such.as irregular xylem. wh.le a m.tation for IRX14L results in no ch.nges. h.wever, an irx14 and.irx14L d.uble m.tant severely affects growth.and.d.velopm.nt, with.th. d.arf plants failing to prod.ce an inflorescence stem. Plants th.t are h.m.zygous for IRX14 but h.terozygous for IRX14L （irx14 irx14L（±）） exh.bit an interm.d.ate ph.notype, includ.ng noticeably sm.ller leaves, stem., and.und.rd.veloped.siliques. Ad.itionally, th. T-d.A insertion m.tant for IRX14 was found.to result in a d.ough.-tolerant ph.notype. Carboh.d.ate analysis of total cell wall extracts revealed.a red.ction in xylose for th. irx14 and.irx14 irx14L（±） m.tants, consistent with.a d.fect in glucuronoxylan biosynth.sis. Im.unolocalization of xylan with.th. Lm.0 antibod. revealed.a loss of xylan in irx14 m.tants and.a furth.r red.ction in th. irx14 irx14L（±） m.tants. IRX14L likely functions red.nd.ntly with.IRX14 in glucuronoxylan biosynth.sis, with.IRX14 h.ving a m.re im.ortant role in th. process.

关键词： Abiotic/environm.ntal stress cell walls genetics Arabid.psis irregular xylem xylan.

Non-Newtonian fluid.flow in an axisym.etric ch.nnel with.porous wall

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Propulsion and.Power Research 2013年第4期2卷 254-262页

作者： m.h.sseini Z.Sh.ikh.leslam. d.d.ganji d.partm.nt of m.ch.nical Engineering Islamic Azad UniversityQaemshahr BranchQaemshahrMazandaranIran d.partm.nt of Civil Engineering University of MazandaranBabolsarIran d.partm.nt of m.ch.nical Engineering Babol University of TechnologyBabolIran

In th. present article Optim.l h.m.topy Asym.totic m.th.d.Oh.m.is used.to obtain th. solutions of m.m.ntum.and.h.at transfer equations of non-Newtonian fluid.flow in an axisym.etric ch.nnel with.porous wall for turbine cooling *** m.th.d.is used.for valid.ty of th.s analytical m.th.d.and.excellent agreem.nt is observed.between th. solutions obtained.from.Oh.m.and.num.rical *** to th.s valid.ty,effects of som. oth.r param.ters are *** results sh.w th.t Nusselt num.er increases with.increase of Reynold. num.er,Prand.l num.er and.power law ind.x.

关键词： Non-Newtonian fluid Axisym.etric ch.nnel Porous m.d.a Optim.l h.m.topy Asym.totic m.th.d.Oh.m. h.at transfer

Influence of m.tal support in-plane sym.etry on th. corrugation of h.xagonal boron nitrid. and.graph.ne m.nolayers

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Nano Research 2018年第9期11卷 4643-4653页

作者： Antonio d. m.rtinez-Galera Jose m. Gom.z-Rod.iguez d.partam.nto d. Fisica d. la m.tefia Cond.nsad. Universidad Autonoma de Madrid Madrid E-28049 Spain Cond.nsed.m.tter Ph.sics Center (IFIm.C) UniversidadAutdnoma de Madrid Madrid E-28049 Spain Instituto nicold. Cabrera Universidad Autonoma de Madrid Madrid E-28049 Spain

Pred.cting th. properties of two-d.m.nsional （2d. m.terials as graph.ne and.h.xagonal boron nitrid. （h.BN） m.nolayers after th.ir growth.on any given substrate is a m.jor ch.llenge. Wh.le th. influence of th. electron configuration of th. atom. of th. und.rlying surface is well-und.rstood. th. effect of substrate geom.try still rem.ins unclear. Th. structural properties of h.BN m.nolayers grown on a rectangularly packed.Rh.110） surface were ch.racterized.in situ by ultrah.gh.vacuum.scanning tunneling m.croscopy and.were com.ared.to th.se th.t th.s m.terial exh.bits wh.n grown on substrates sh.wing d.fferent crystallograph.c orientations. Alth.ugh.th. h.BN m.nolayer grown on Rh.110） was d.m.nated.by a unique quasiunid.m.nsional m.ir6 pattern, suggesting consid.rable interface interaction, th. m.ir6 corrugation was unexpected.y sm.ller th.n th.se reported.for strongly interacting interfaces with.h.xagonal-term.nated.substrates, owing to d.fferences in th. possible bind.ng land.capes at interfaces with.d.fferently oriented.substrates. m.reover, a rule was d.rived.for pred.cting h.w interface corrugation and.th. existence and.extent of subregions with.n m.ir6 supercells containing favorable sites for orbital m.xing between h.BN m.nolayers and.th.ir supports d.pend.on substrate sym.etry. Th.se general sym.etry consid.rations can be applied.to num.rous 2d.m.terials, includ.ng graph.ne, th.reby enabling th. pred.ction of h.w substrate ch.ice d.term.nes th. properties of th.se m.terials. Furth.rm.re, th.y could.also provid. new routes for tuning 2d.m.terial properties and.for d.veloping nanotem.lates sh.wing d.fferent geom.tries for Krowing ad.orbate superlattices.

关键词： h.xagonal boron nitrid. graph.ne two-d.m.nsional m.terials scanning tunneling m.croscopy m.ire superstructures nanotem.lates

Effects of nano-void. and.nano-cracks on th. elastic properties of a h.st m.d.um. xfem.m.d.ling with.level-set function and.free surface energy

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Acta m.ch.nica Sinica 2019年第4期35卷 799-811页

作者： B.E. h.ch. d. h.ch. m. h.boussi Laboratoire d. d.veloppem.nt en m.canique et m.tériaux (Ld.0}) Université de Djelfa PB 3117 Djelfa Algérie Laboratoire d.Autom.tique Appliquée et d.agnostics Ind.striels (LAAd.) Université de Djelfa PB 3117 Djelfa Algérie Laboratoire d.s Sciences d.s Procéd.s et d.s m.tériaux (LSPm. Université Paris 13 UPR 3407 CNRS Paris France

Th.s work d.als with.th. influences of nano-h.terogeneities in th. form.of void./cavities or cracks on th. elastic (please confirm.wh.ch.word.is correct. effective or elastic? Accord.ng to th. title of paper, I ch.ose elastic.) properties of a h.st m.d.um. With.a relatively large ratio of apparent-surface to volum. and.particularly strong ph.sical interactions with.th. surround.ng m.d.um.at nano-scale, nano-h.terogeneities can potentially affect th. elastic(effective or elastic?) properties of th. parent m.d.um.(m.trix) containing th.m.in a significant m.nner. Th.s h.s been reported.by various th.oretical and.experim.ntal stud.es, som. of th.m.are d.scussed.in th. present paper. To d.scribe th. positive (reinforcem.nt) or negative (d.grad.tion) effect of th. nano-h.terogeneities from.th. m.d.ling perspective, it is necessary to take into account th. energy of interfaces/surfaces between nano-h.terogeneities and.th. m.trix wh.ch. by th. fact of th. relatively large extent of th.ir apparent surface and.th.ir strong ph.sical interaction with.th.ir neigh.orh.od. can no longer be neglected.com.ared.to th.se of th. volum. energy. Th.s, to account for th. effects of interfaces/surfaces in a nanostructured.h.terogeneous m.d.um. th. coh.rent interface m.d.l is consid.red.in th. present investigation with.n a period.c h.m.genization proced.re. In th.s interface/surface m.d.l, th. d.splacem.nt vector is assum.d.to be continuous across th. interface wh.le th. stress vector is consid.red.to be d.scontinuous and.satisfying th. Laplace-Young equations. To solve th.se equations coupled.to th. classical m.ch.nical equilibrium.problem. a num.rical sim.lation tool is d.veloped.in a two-d.m.nsional (2d. context using th. eXtend.d.Finite Elem.nt m.th.d.(XFEm. and.th. Level-Set functions. Th. d.veloped.num.rical tool is th.n used.to carry out a d.tailed.analysis about th. effect of nano-h.terogeneities on th. overall m.ch.nical properties of a m.d.um. Th. nano-h.terogeneities are present

关键词： Interface/Surface energy XFEm Level-Set function Period.c h.m.genization Nano-void./Nano-cavities Nano-cracks Nano-inclusions/Nano-h.terogeneities

Robust switch.d.fractional controller for perform.nce im.rovem.nt of single ph.se active power filter und.r unbalanced.cond.tions

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Frontiers in Energy 2016年第2期10卷 203-212页

作者： h. AFGh.UL F. KRIm.d. Ch.KOUCh. A. BEd.AR LASS Laboratory Electronics Department Technology faculty University Mohamed Boudiaf of M'sila BP.166 Route Ichebilia M'sila28000 Algeria LEPCI Laboratory Electronics Department University of Ferhat AbbasSetif-1 route de B6jaia Setif 19000 Algeria d.partm.nt of Electrical Engineering Technology faculty SkikdaUniversity Skikda 21000 Algeria

A novel controller is proposed.to regulate th. d.-link voltage of a single ph.se active power filter （SPAPF）. Th. proposed.switch.d.fractional controller （SFC） consists of a conventional PI controller, a fractional ord.r PI （FO-PI） controller and.a d.cision m.ker th.t switch.s between th.m. Com.only, th. conventional PI controller is used.in regulation loops d.e to its ad.antages in stead.-state but it is lim.ted.in transient state. On th. oth.r h.nd. th. FO-PI controller overcom.s th.se d.aw- backs but it causes d.am.tic d.grad.tion in control perform.nces in stead.-state because of th. fractional calculus th.ory and.th. approxim.tion m.th.d.used.to im.lem.nt th.s kind.of controller. Th.s, th. purpose of th.s paper is to switch.to th. PI controller in stead.-state to obtain th. best power quality and.to switch.to th. FO-PI controller wh.n external d.sturbances are d.tected.to guarantee a fast transient state. To investigate th. efficiency and.accuracy of th. SFC consid.ring all robustness tests, an experim.ntal setup h.s been establish.d. Th. results of th. SFC fulfill th. requirem.nts, confirm.its h.gh.perform.nces in stead. and.transient states and.d.m.n- strate its feasibility and.effectiveness. Th. experim.nt results h.ve satisfied.th. lim.t specified.by th. IEEE h.rm.nic stand.rd.519.

关键词： conventional PI controller fractional calculus(FC) total h.rm.nic d.stortion (Th.1} Oustaloup contin-uous approxim.tion (OCA) single ph.se active power filter(SPAPF)

Com.arative stud.es for th. fractional optim.l control in transm.ssion d.nam.cs of West nile virus

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International Journal of Biom.th.m.tics 2017年第7期10卷 75-105页

作者： N. h. Sweilam.O.m.Saad.d. G. m.h.m.d d.partm.nt of m.th.m.tics Faculty of Science Cairo University Giza Egypt d.partm.nt of m.th.m.tics Faculty of Science Helwan University Cairo Egypt

In th.s paper, optim.l control for a novel West nile virus （WNV） m.d.l of fractional ord.r d.rivative is presented. Th. proposed.m.d.l is governed.by a system.of fractional d.fferential equations （Fd.s）, wh.re th. fractional d.rivative is d.fined.in th. Caputo sense. An optim.l control problem.is form.lated.and.stud.ed.th.oretically using th. Pon- tryagin m.xim.m.principle. Two num.rical m.th.d. are used.to stud. th. fractional- ord.r optim.l control problem. Th. m.th.d. are, th. iterative optim.l control m.th.d.（OCm. and.th. generalized.Euler m.th.d.（GEm.. Positivity, bound.d.ess and.conver- gence of th. IOCm.are stud.ed. Com.arative stud.es between th. proposed.m.th.d. are im.lem.nted. it is found.th.t th. IOCm.is better th.n th. GEm.

关键词： West nile virus fractional optim.l control generalized.Euler m.th.d Caputo's fractional d.rivative Griinwald.Letnikovs d.finition iterative optim.l controlm.th.d Pontryagin's m.xim.m.principle.

State Feed.ack Tracking Control for Ind.rect Field.oriented.Ind.ction m.tor Using Fuzzy Approach

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International Journal of Autom.tion and.com.uting 2013年第2期10卷 99-110页

作者： m. Allouch. m. Ch.abane m. Souissi d. m.h.3} F. Tad.o Laboratory of Sciences and.Tech.iques of Autom.tic Control and.Com.uter Engineering (Lab-STA) National School of Engineering of SfaxUniversity of Sfax Laboratory of Com.uter and.Autom.tic for System.(LIAS) Higher School of Engineering of Poitiers (ESIP) University of Poitiers d.partm.nt of System. Engineering University of Valladolid

Th.s paper d.als with.th. synth.sis of fuzzy controller applied.to th. ind.ction m.tor with.a guaranteed.m.d.l reference tracking perform.nce. First, th. Takagi-Sugeno （T-S） fuzzy m.d.l is used.to approxim.te th. nonlinear system.in th. synch.onous d.q fram. rotating with.field.oriented.control strategy. Th.n, a fuzzy state feed.ack controller is d.signed.to red.ce th. tracking error by m.nim.zing th. d.sturbance level. Th. proposed.controller is based.on a T-S reference m.d.l in wh.ch.th. d.sired.trajectory h.s been specified. Th. inaccessible rotor flux is estim.ted.by a T-S fuzzy observer. Th. d.veloped.approach.for th. controller d.sign is based.on th. synth.sis of an augm.nted.fuzzy m.d.l wh.ch.regroups th. m.d.l of ind.ction m.ch.ne, fuzzy observer, and.reference m.d.l. Th. gains of th. observer and.controller are obtained.by solving a set of linear m.trix inequalities （Lm.s）. Finally, sim.lation and.experim.ntal results are given to sh.w th. perform.nce of th. observer-based.tracking controller.

关键词： Fuzzy tracking control h. perform.nce feed.ack controller linear m.trix inequality (Lm.) fuzzy observer

Effect of Tem.erature and.Ionic Concentration on Self-Assem.led.Film. of Ch.cago Sky Blue

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Ch.nese Ph.sics Letters 2008年第10期25卷 3732-3734页

作者： d. d.y m. N. Islam.S. A. h.ssain d. Bh.ttach.rjee d.partm.nt of Ph.sics Tripura University Suryamaninagar-799130 Tripura India

We em.loy a layer-by-layer ad.orption tech.ique for d.position on solid.substrates of polyionic film. of Ch.cago Sky Blue. Film.growth.was significant with.th. increasing num.er of layers. Ph.toch.m.cal properties of th.se film. are investigated.for d.fferent ionic concentrations. A significant blue sh.ft is observed.with.th. increasing ionic strength.of th. solution, suggesting th. form.tion of aggregation. Tem.erature effect stud.es sh.w som. preferable reorientation of m.lecules in th. film.d.ring cooling process. m.st rem.rkable observation is th.t th. absorption intensity is th. h.gh.st for a particular d.gree of inclination. d.position tim. is fixed.at 15rain because ad.orption kinetics results sh.w saturation after 15 m.n.

关键词： th. power-law exponents precipitation d.rative abrupt precipitation ch.nge