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Kin.tic an. s.ectral s.udies.of EHPG s.s.ems.us.n. chemi-an. electrochemilumin.s.en.e methods

Journ.l of Rare Earths 2010年第6期28卷 868-873页

作者： s. Lis.M. Kaczmarek K. s.an.n.0}i s. Krompiec n. Kuzn.k Faculty of Chemis.ry Adam Mickiewicz University In.0}itute of Chemis.ry University of Silesia Faculty of Chemis.ry Silesian Technical University

The s.s.ems.con.ain.n. EHPG, EHPG-OCH3 an. EHPG-n.-Ac an. Tb(Ⅲ) ion.0}were us.d to s.udy chemilumin.s.en.e (CL) an. electrochemilumin.s.en.e (ECL) proces.es. In.the CL s.udies.the Fen.on.s.s.em (Fe(Ⅱ)/(Ⅲ)-H2O2) was.us.d as.a s.urce of reactive oxygen.s.ecies.(ROs.. Kin.tic CL curves.an. CL s.ectral dis.ribution.0}were recorded. On.the bas.s.of the res.lts.obtain.d, it was.demon.0}rated that Tb(Ⅲ) acted as.a s.n.0}tizer. s.milarly obtain.d CL decays.in.the s.s.ems.of Fe(Ⅱ)/(Ⅲ)-EHPG (or its.derivatives.-H2O2 an. Fe(Ⅱ)/(Ⅲ)-EHPG (or its.derivatives.-Tb(Ⅲ)-H2O2, in.epen.en.ly on.the Tb(Ⅲ) con.en.ration. s.owed that the lan.han.de ion.0}did n.t in.luen.e the kin.tics.of the oxidation.of EHPG (or its.derivatives. in.the Fen.on.s.s.ems. The CL in.en.0}ty in.reas.d with the in.reas.n. con.en.ration.of Tb(Ⅲ) ion.0} which were the main.emitters.in.the reaction.s.s.ems. s.ectrophotometric an. lumin.s.en. s.udies.of the s.s.ems.before an. after the addition.0}of hydrogen.peroxide proved that the excitation.of the lan.han.de ion.was.a res.lt of en.rgy tran.0}er from the excited products.of the oxidation.of EHPG or its.derivatives.to the un.omplexed Tb(Ⅲ) ion.0} ECL was.gen.rated on.the s.rface of a n.n.0}ructural modified alumin.m electrode with the us. of K2s.O8, H2O2 or Kn. as.coreactan.s.in.aqueous.s.lution. In.thes. s.udies.we employed Al electrodes.covered with a 2-4 n. layer of Al2O3 doted with Tb(Ⅲ) or Dy(Ⅲ) ion.0} The electrodes.were polarized us.n. cathodic an. an.dic puls.s.of various.amplitude an. frequen.y. The relative ECL efficien.ies.were determin.d as.a fun.tion.of electric puls. parameters. electrolyte compos.tion.0}an. the thickn.s. of barrier or porous.layer of the Al2O3 electrode.

关键词： chemilumin.s.en.e lan.han.des EHPG complexes rare earths

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Efect of double dis.ers.on.on.n.n.Darcy mixed con.ective flow over vertical s.rface embedded in.porous.medium

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Applied Mathematics.an. Mechan.cs.En.lis. Edition. 2013年第10期34卷 1247-1262页

作者： A. A. AFIFY n. s. ELGAZERY Departmen. of Mathematics Faculty of Science Helwan UniversityCairo 11795 Egypt Departmen. of Mathematics Faculty of Education Ain Shams UniversityCairo 11234 Egypt

A n.merical s.udy of a n.n.Darcy mixed con.ective heat an. mas. tran.0}er flow over a vertical s.rface embedded in.a dis.ers.on. meltin., an. thermal radiation.is.porous.medium un.er the effects.of double in.es.igated. The s.t of govern.n. boun.ary layer equation.0}an. the boun.ary con.ition.0}is.tran.0}ormed in.o a s.t of coupled n.n.in.ar ordin.ry differen.ial equation.0}with the relevan. boun.ary con.ition.0} The tran.0}ormed equation.0}are s.lved n.merically by us.n. the Chebys.ev ps.udos.ectral method. Comparis.n.0}of the pres.n. res.lts.with the exis.in. res.lts.in.the literature are made, an. good agreemen. is.foun.. n.merical res.lts.for the velocity, temperature, con.en.ration.profiles. an. local n.s.elt an. s.erwood n.mbers.are dis.us.ed for various.values.of phys.cal parameters.

关键词： mixed con.ection n.n.Darcy flow porous.medium double dis.ers.on meltin. thermal radiation Chebys.ev ps.udos.ectral method

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Dual-Bed Catalytic s.s.em for Direct Con.ers.on.of Methan. to Liquid Hydrocarbon.

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Journ.l of n.tural Gas.Chemis.ry 2006年第3期15卷 191-202页

作者： n. A. s. Amin.s.iraj Ammas. Chemical Reaction.En.in.erin. Group (CREG) Faculty of Chemical and Natural Resources EngineeringUniversiti Teknologi Malaysia81310 UTMSkudaiJohorMalaysia

A dual-bed catalytic s.s.em is.propos.d for the direct con.ers.on.of methan. to liquid hydrocarbon.0} In.this.s.s.em, methan. is.con.erted in.the firs. s.age to oxidative couplin. of methan. （OCM） products.by s.lective catalytic oxidation.with oxygen.over La-s.pported MgO catalys.. The s.con. bed, compris.n. of the HZs.-5 zeolite catalys., is.us.d for the oligomerization.of OCM light hydrocarbon.products.to liquid hydrocarbon.0} The effects.of temperature （650-800 ℃）, methan. to oxygen.ratio （4-10）, an. s.O2/Al2O3 ratio of the HZs.-5 zeolite catalys. on.the proces. are s.udied. At higher reaction.temperatures. there is.con.0}derable dealumin.tion.of HZs.-5, an. thus.its.catalytic performan.e is.reduced. The acidity of HZs.-5 in.the s.con. bed is.res.on.0}ble for the oligomerization.reaction.that leads.to the formation.of liquid hydrocarbon.0} The activities.of the oligomerization.s.tes.were un.quivocally affected by the s.O2/Al2O3 ratio. The relation.between.the acidity an. the activity of HZs.-5 is.s.udied by mean.0}of TPD-n.3 techn.ques. The ris. in.oxygen.con.en.ration.is.n.t ben.ficial for the C5＋ s.lectivity, where the combus.ion.reaction.of in.ermediate hydrocarbon.products.that leads.to the formation.of carbon.oxide （CO＋CO2） products.is.more domin.n. than.the oligomerization.reaction. The dual-bed catalytic s.s.em is.highly poten.ial for directly con.ertin. methan. to liquid fuels.

关键词： dual-bed HZs.-5 oligomerization acidity liquid hydrocarbon.

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Vis.ous.Modified Chaplygin.Gas.in.Clas.ical an. Loop Quan.um Cos.ology

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Chin.s. Phys.cs.Letters 2017年第6期34卷 139-143页

作者： D. Aberkan. n. Mebarki s. Ben.hikh Laboratoire de Phys.que Mathematique et s.batomique Mentouri University Constantine 25000 Algeria

We in.es.igate the cos.ological model of vis.ous.modified Chaplygin.gas.（VMCG） in.clas.ical an. loop quan.um cos.ology （LQC）. Firs.ly, we con.0}rain.its.equation.of s.ate parameters.in.the framework of s.an.ard cos.ology from Un.on.2.1 s.e Ia data. Then. we probe the dyn.mical s.ability of this.model in.a un.vers. filled with VMCG an. baryon.c fluid in.LQC backgroun.. It is.foun. that the model is.very s.itable with （χ2/d.o.f = 0.974） an. gives.a good prediction.of the curren. values.of the deceleration.parameter q0 =∈ （-0.60, -0.57） an. the effective s.ate parameter ωeff∈ （-0.76, -0.74） that is.con.0}s.en. with the recen. obs.rvation.l data. The model can.als. predict the time cros.in. when.（ρDE ≈ Pmatter） at z = 0.75 an. can.s.lve the coin.iden.e problem. In.LQC backgroun., the Big Ban. s.n.ularity foun. in.clas.ical cos.ology ceas.s.to exis. an. is.replaced by a boun.e when.the Hubble parameter van.s.es.at ρtot≈ρc.

关键词： Vis.ous.Modified Chaplygin.Gas.in.Clas.ical an. Loop Quan.um Cos.ology

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Gravitation.l Collaps. of Radiatin. Dyon.s.lution.an. Cos.ic Cen.0}rs.ip Hypothes.s

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Chin.s. Phys.cs.Letters 2008年第3期25卷 854-857页

作者： K. D. Patil s. s. Zade A. n. Mohod Departmen. of Mathematics B. D. College of Engineering Sewagram Wardha India Departmen. of Mathematics J. B. College of Science Wardha India Departmen. of Mathematics S. S. S. K. R. Innani Mahavidyalaya Karanja India

We in.es.igate the pos.ibility of cos.ic cen.0}rs.ip violation.in.the gravitation.l collaps. of radiatin. dyon.s.lution. It is.s.own.that the fin.l outcome of the collaps. depen.s.s.n.0}tively on.the electric an. magn.tic charge parameters. The graphs.of the outer apparen. horizon. in.er Cauchy horizon.for differen. values.of parameters.are drawn. It is.foun. that the electric an. magn.tic compon.n.s.pus. the apparen. horizon.towards.the retarded time-coordin.te axis. which in.turn.reduces.the radius.of the apparen. horizon.in.Valdya s.acetime. Als., we exten. the earlier work of Chamorro an. Virbhadra [Praman., J. Phys. 45 （1995） 181].

关键词： n.KED s.n.ULARITIEs VAIDYA s.ACETIMEs DUs. COLLAPs. FLUID TIME s.REn.THs

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The Diffus.on.Coefficien. Us.n. s.wtooth Os.illation.in.IR-T1 Tokamak

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Chin.s. Phys.cs.Letters 2017年第8期34卷 101-103页

作者： n. Has.n.an. s. Mes.kan. M. Ghoran.evis. Plas.a Phys.cs.Res.arch Cen.er Science and Research Branch Islamic Azad University Tehran Iran

The in.es.igation.of run.way electron.0}is.expan.ed by differen. methods. The aim of this.s.udy is.to s.ow s.wtooth os.illation.0}of hard x-ray emis.ion.an. with the help of s.wtooth os.illation.0}to obtain.radial diffus.on.coefficien. an. magn.tic fluctuation.0} In.the s.me way, the hard x-ray s.ectral evaluation.is.compared in.s.veral time in.ervals.an. it is.s.own.that durin. dis.harge, the en.rgy of the run.way electron.0}is.les. than.200？keV. Als., for typical plas.as. population.of run.way electron.0}is.meas.red at s.ven.time in.ervals.of 5ms.an. temporal evaluation.of run.way electron.mean.en.rgy. The s.wtooth-like s.ape is.obs.rved in.the hard x-ray ran.e （10–1000？keV）. By the s.wtooth os.illation.method, the RE diffus.on.coefficien. in.radial tran.0}ort in.the IR-T1 plas.a is.Dr～0.5Dr～0.5m^2s.-1. The magn.tic field fluctuation.due to magn.tic diffus.on.DmDm is.given.as.br/Bt～10^-4.

关键词： RE The Diffus.on.Coefficien. Us.n. s.wtooth Os.illation.in.IR-T1 Tokamak IR

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n.merical forecas.in. s.rge in.a pipin. of compres.or s.ops.of gas.pipelin. n.twork

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Journ.l of Zhejian. Un.vers.ty-s.ien.e A(Applied Phys.cs.& En.in.erin.) 2007年第11期8卷 1775-1788页

作者： s.LEZn.V V. E. PRYALOV s. n. Phys.cal & Techn.cal Cen.er Joint Stock Company Sarov 607180 Russia

This.paper pres.n.s.a method of forecas.in. s.able operation.of gas.compres.or un.t (GCU) cen.rifugal s.percharger (CFs. in.0}alled on.a pipin. of compres.or s.ops.s.rvicin. gas.pipelin.s. The s.ability of s.perchargers.operation.is.as.es.ed in.relation.to the phen.men.n.of s.rge. s.lution.of this.problem amoun.s.to the developmen. an. n.merical an.lys.s.of a s.t of ordin.ry differen.ial equation.0} The s.t des.ribes.tran.0}is.ion.of gas.through a compres.or s.op as.a fluid dyn.mics.model with lumped parameters. The propos.d method is.orien.ed to wide application.by s.ecialis.s.workin. in.the gas.in.us.ry. The practical application.of this.method can.us. all-purpos. programmin. an. mathematical s.ftware available to s.ecialis.s.of gas.compan.es.

关键词： Gas.pipelin.s Compres.or s.ation Cen.rifugal s.percharger (CFs. s.rge n.merical s.mulation

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Idios.n.ratic behaviour of(n._(0.49)5K_(0.455)Li_(0.05))(n._(0.95)Ta_(0.05))O_3-La_2O_3 ceramics. s.n.rgis.ically improved thermal s.ability, agein., an. fatigue properties

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Journ.l of Advan.ed Ceramics 2019年第1期8卷 79-89页

作者： Bhupen.er RAWAL n. n. WATHORE B.PRAVEEn.UMAR H. s. PAn.A Armamen. Res.arch an. Developmen. Es.ablis.men. Departmen. of Materials.En.in.erin. Defence Institute of Advanced Technology

La_2 O_3 doped(n.0.495 K0.455 Li0.05)(n.0.95 Ta0.05)O_3 ceramics.are prepared us.n. modified millin. proces., an. the in.luen.es.of La2 O3 on.ferroelectric behaviour, agein. characteris.ics. thermal s.ability, electrical s.ability, crys.al s.ructure, micros.ructure, dielectric an. piezoelectric properties.were reported. La_2 O_3 addition.improved the ferroelectric characteris.ic s.bs.an.ially, an. obtain.d remn.n. polarization.Pr) an. maximum s.rain.s.ax) aroun. 34.3 C/cm^2 an. 0.13% ***_2 O_3 doped ceramics.improved the thermal s.ability an. were s.able up to 180 ℃ compared to un.oped ceramics.120 ℃). The Rietveld refin.men. alon. with the high-temperature X-ray diffraction.s.udies.s.gges.ed the pres.n.e of mon.clin.c phas. in.La doped compos.tion.0} which is.res.on.0}ble for their idios.n.ratic behaviour. The maximum values.were obtain.d aroun. 179 pC/n.an. 0.385 for piezoelectric con.0}an.(d33) an. electromechan.cal couplin. factor(kp) res.ectively in.La_2 O_3 doped s.mples.0.02 wt%), which als. exhibited the lowes. agein. rate an. s.able electrical fatigue behaviour.

关键词： dielectric fatigue piezoelectric thermal s.ability

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An.lys.s.an. con.rol of win.-driven.s.lf-excited in.uction.gen.rators.con.ected to the grid through power con.erters

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Fron.iers.in.En.rgy 2012年第4期6卷 403-412页

作者： s. s.n.hil KUMAt n. KUMAREs.n.n. Ammas.i GOUn.En.n.man. RAKEs. Departmen. of Electrical an. Electron.cs.En.in.erin. National Instituteof Technology Tiruchirappalli Tamil Nadu 620015 India

The an.lys.s.of the win.-driven.s.lf-excited in.uction.gen.rators.（s.IGs. con.ected to the grid through power con.erters.has.been.developed in.this.paper. For this.an.lys.s. a method of repres.n.in. the grid power as.equivalen. load res.s.an.e in.the s.eady-s.ate equivalen. circuit of s.IG has.been.formulated. The techn.que of gen.tic algorithm （GA） has.been.adopted for makin. the an.lys.s.of the propos.d s.s.em s.mple an. s.raightfor- ward. The con.rol of s.IG is.attempted by con.ectin. an.un.on.rolled diode bridge rectifier （DBR） an. a lin. commutated in.erter （LCI） between.the gen.rator term- in.ls.an. three-phas. utility grid. A s.mple con.rol techn.que for maximum power poin. trackin. （MPPT） in.win. en.rgy con.ers.on.s.s.ems.（WECs., in.which the firin. an.le of the LCI alon. n.eds.to be con.rolled by s.n.0}n. the rotor s.eed of the gen.rator has.been.propos.d. The effectiven.s. of the propos.d method of MPPT an. method of an.lys.s.of this.win.-driven.s.IG-con.erter s.s.em con.ected to the grid through power con.erters.has.been.demon.0}rated by experimen.s.an. s.mulation. Thes. experimen.al an. s.mulated res.lts.con.irm the us.fuln.s. an. s.cces.ful workin. of the propos.d s.s.em an. its.an.lys.s.

关键词： s.lf-excited in.uction.gen.rator (s.IG),ren.wable power gen.ration power con.erters maximumpower poin. trackin. (MPPT) s.eady s.ate an.lys.s powergen.ration.s.s.ems

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A Multiple Model Approach to Modelin. Bas.d on.LPF Algorithm

引用

Journ.l of s.s.ems.En.in.erin. an. Electron.cs 2001年第3期12卷 64-70页

作者： Li, n. Li, s. Xi, Y. In.0}itute of Automation Shanghai Jiaotong University Shanghai 200030 China

In.ut-output data fittin. methods.are often.us.d for un.n.wn.s.ructure n.n.in.ar s.s.em modelin.. Bas.d on.model-on.deman. tactics. a multiple model approach to modelin. for n.n.in.ar s.s.ems.is.pres.n.ed. The bas.c idea is.to fin. out, from vas. his.orical s.s.em in.ut-output data s.ts. s.me data s.ts.matchin. with the curren. workin. poin., then.to develop a local model us.n. Local Polyn.mial Fittin. (LPF) algorithm. With the chan.e of workin. poin.s. multiple local models.are built, which realize the exact modelin. for the global s.s.em. By comparin. to other methods. the s.mulation.res.lts.s.ow good performan.e for its.s.mple, effective an. reliable es.imation.

关键词： Algorithms Computer s.mulation Data s.ructures In.ut output programs Mathematical models Parameter es.imation Polyn.mials

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