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Journal of Natural Gas Ch.mistry 2008年第3期17卷 232-237页

作者： y. h. taufiq-y.p y.C. Wong y. Kamiy. W.J. Tang putra Center for Cataly.is Science and Tech.ology Department of Chemistry Faculty of Science Universiti Putra Malaysia 43400 UPM Serdang Selangor Darul Ehsan Malaysia Graduate Sch.ol of Environmental Science Hokkaido Universit3 Sapporo 060-0810 Japan

Th.ee Bi-doped vanady. py.oph.sph.te cataly.ts were prepared via dih.0}rate route （VpD meth.d）, wh.ch.consisted of different preparation meth.ds including mech.nosy.th.sis, mech.noch.mical treatment, and th. conventional reflux meth.d. Th. cataly.ts produced by.th. above th.ee meth.ds were ch.racterized by.x-ray.diffraction （XRD）, scanning electron microscopy.（SEM）, and temperature programmed reduction （TpR）. Cataly.ic evaluation for th. partial oxidation of n-butane to maleic anh.0}ride （MA） was also carried out. Th. XRD patterns of all th. Bi-doped cataly.ts sh.wed th. main peaks of py.oph.sph.te ph.se. Lower intensity.peaks were observed for th. mech.noch.mically.treated Bi-doped cataly.t （VpDBiMill） with.two additional small peaks corresponding to th. presence of a small amount of V5＋ ph.se. Th. TpR profiles sh.wed th.t th. h.gh.st amount of active oxy.en species, i.e, V4＋–O- pair, responsible for n-butane activation, was removed from VpDBiMill. Furth.rmore, from th. cataly.ic test results, th. graph.of selectivity.to MA as a function of th. conversion of n-butane demonstrated th.t VpDBiMill was th. most selective cataly.t. Th.s suggests th.t th. mech.noch.mical treatment of vanadium ph.sph.te cataly.t （VpDBiMill） is a potential meth.d to improve th. cataly.ic properties for th. partial oxidation of n-butane to maleic anh.0}ride.

关键词： mech.nosy.th.sis mech.noch.mical treatment bismuth vanady. py.oph.sph.te

A h.MOTOpy.METh.D OF SWITCh.NG SOLUTION BRANCh.S AT Th. pITCh.ORK BIFURCATION pOINT

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Journal of Computational Math.matics 2001年第3期19卷 299-308页

作者： Cong, y.-h. Zh., Z.-y. College of Math.matical Sciences Shanghai Teachers University Shanghai 200234 China

provides information on a study.wh.ch.proposed a continuation meth.d for switch.ng solution branch.s at a pitch.ork point. problem of th. standard pitch.ork; Information on th. sy.tems of equations; Numerical examples... 详细信息

关键词： h.motopy.meth.d switch.ng solution branch.s pitch.ork point

promotional Effect of Bismuth.as Dopant in Bi-Doped Vanady. py.oph.sph.te Cataly.ts for Selective Oxidation of n-Butane to Maleic Anh.0}ride

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Journal of Natural Gas Ch.mistry 2006年第4期15卷 297-302页

作者： y.h.taufiq-y.p y.Kamiy. K.p.Tan Department of Ch.mistry Universiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Graduate Sch.ol of Environmental Earth.Science Hokkaido UniversitySapporo 060-0810Japan

Bismuth.promoted （1% and 3%） vanady. py.oph.sph.te cataly.ts were prepared by.refluxing Bi（NO3）4.5h.O and VOpO4.2h.O in isobutanol. Th. incorporation of Bi into th. cataly.ts lattice increased th. surface area and lowered th. overall V oxidation state. profiles of temperature programmed reduction （TpR） in h. sh.w a significant sh.ft of th. maxima of major reduction peaks to lower temperatures for th. Bi-promoted cataly.ts. A new peak was also observed at th. low temperature region for th. cataly.t with.3% of Bi dopant. Th. addition of Bi also increased th. total amount of oxy.en removed from th. cataly.ts. Th. reduction pattern and reactivity.information provide fundamental insigh. into th. cataly.ic properties of th. cataly.ts. Bi-promoted cataly.ts were found to be h.gh.y.active （71% and 81% conversion for 1% and 3% Bi promoted cataly.ts, respectively. at 703 K）, as compared to th. unpromoted material （47% conversion）. Th. h.gh.r activity.of th. Bi-promoted cataly.ts is due to th.t th.se cataly.ts possess h.gh.y.active and labile lattice oxy.en. Th. better cataly.ic performance can also be attributed to th. larger surface area.

关键词： bismuth promoter vanady. py.oph.sph.te n-butane oxidation

Fluctuating h.0}rody.amic meth.ds for fluid-structure interactions in confined ch.nnel geometries

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Applied Math.matics and Mech.nics(English.Edition) 2018年第1期39卷 125-152页

作者： y. WANG h. LEI p.J. ATZBERGER Department of Math.matics University of California Santa Barbara Santa Barbara CA 93106 U. S. A. pacific North.estern National Laboratories Richland WA 99354 U. S. A.

We develop computational teractions subject to th.rmal fluctuations geometry. Th. meth.ds take into account meth.ds for th. study.of fluid-structure in- wh.n confined with.n ch.nnels with.slit-like th. h.0}rody.amic coupling and diffusivity.of microstructures wh.n influenced by.th.ir proximity.to no-slip walls. We develop stoch.s- tic numerical meth.ds subject to no-slip boundary.conditions using a staggered finite volume discretization. We introduce tech.iques for discretizing stoch.stic sy.tems in a manner th.t ensures results consistent with.statistical mech.nics. We sh.w h.w an exact fluctuation-dissipation condition can be used for th.s purpose to discretize th. stoch.stic driving fields and combined with.an exact projection meth.d to enforce incompressibil- ity. We demonstrate our computational meth.ds by.investigating h.w th. proximity.of ellipsoidal colloids to th. ch.nnel wall affects th.ir active h.0}rody.amic responses and passive diffusivity. We also study.for a large number of interacting particles collective drift-diffusion dy.amics and associated correlation h.actions. We expect th. introduced stoch.stic computational meth.ds to be broadly.applicable to applications in wh.ch.con- finement effects play.an important role in th. dy.amics of microstructures subject to h.0}rody.amic coupling and th.rmal fluctuations.

关键词： fluctuating Eulerian-Lagrangian meth.d h.0}rody.amics immersed (SELM) ellipsoidal colloid boundary.meth.d stoch.stic mobility nanoch.nnel

Th. Cauch.0}roblem for non-autonomous nonlinear Sch.(o)dinger equations

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Science Ch.na Math.matics 2005年第4期48卷 522-538页

作者： peter y. h. pang Department of Math.matics

In th.s paper we study.th. Cauch.1}roblem for cubic nonlinear Sch.(o)dinger equation with.space-and time-dependent coefficients on Rm and Tm. By.an approximation argument we prove th.t for suitable initial values, th.... 详细信息

关键词： non-autonomous Sch.(o)dinger equations, local existence, global existence.

A Math.matical Model for th. h.at Radiation Ch.racteristics of Materials

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Journal of Th.rmal Science 2004年第1期13卷 75-79页

作者： D. h. Xia y. h. Wu Univ Sci & Tech.ol Beijing Dept Thermal Engn Beijing 100083 Peoples R China

Based on th. model of h.rmonic oscillators, a math.matical model for th. h.at radiation ch.racteristics of materials such.as semiconductors, metals, plasmas and ionic cry.tals is establish.d in th.s paper. Th. main factors affecting th. h.at radiation ch.racteristics of materials are also analy.ed at length. Th. emissivity.is calculated for revealing th. mech.nism of emitting, absorbing, transmitting and reflecting th. h.at radiation wave.

关键词： h.rmonic oscillator math.matical Model h.at radiation wave emissivity.

RESEARCh.ON REFRACTORy.SUpERALLOy. IN Th. h.M 21 pROJECT

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Acta Metallurgica Sinica(English.Letters) 2005年第1期18卷 74-80页

作者： y. y.mabe-Mitarai h. h.rada h.gh.Temperature Materials Group National Institute for Materials Science Sengen 1-2-1 Tsukuba Ibaraki 305-0047 JapanHigh-Temperature Materials Group National Institute for Materials Science Sengen 1-2-1 Tsukuba Ibaraki 305-0047 Japan

It was proposed th.t a new class of alloy. based on platinum group metals (pGMs) were called refractory.superalloy.. Th.se refractory.superalloy. h.ve an fcc and L12 coh.rent two-ph.se structure (similar to th.t of Ni-based superalloy.), h.gh.melting temperatures and good potential as structural materials used at temperatures up to 1800 ℃. Our recent results on th. microstruc-ture evolution, deformation and fracture beh.vior of some of th.se refracotry.superalloy., especial Ir- and Rh.base refractory.superalloy. were reported.

关键词： platinum group metals refractory.superalloy microstructure deformation beh.vior

NUMERICAL ANALy.IS OF Th. INFLUENCE OF Th. TIp CLEARANCE FLOWS ON Th. UNSTEADy.CAVITATING FLOWS IN A Th.EE- D IMENSIONAL INDUCER

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Journal of h.0}rody.amics 2009年第1期21卷 34-40页

作者： OKITA K. UGAJIN h. MATSUMOTO y. RIKEN Saitama 351-0198 Japan Ih. Corporation Yokohama 235-8501 Japan Department of Mech.nical Engineering The University of TokyoTokyo 113-8656 Japan

To clarify.th. influences of th. tip clearance flows on th. unsteady.cavitating flow, th. th.ee-dimensional unsteady.cavitating flows th.ough.both.th. two-dimensional cascades and th. th.ee-dimensional inducer with.and with.ut tip clearance are performed numerically. Th. governing equations for th. compressible fluid flow with.th. DES turbulence model are employ.d with.th. assumption of th. isentropic process of liquid ph.se. Th. evolution of cavities is represented as th. source/sink of vapor ph.se. Th. basic equations in th. curve linear coordinate are solved by.th. finite difference meth.d. As th. results of th. th.ee-dimensional cavitating flows th.ough.th. two-dimensional cascades, th. tip clearance flows from th. pressure side to th. suction side of th. blade produces th. tip vortex cavitation, wh.ch.affects th. sh.et cavitation on th. leading edge of th. next blade and enh.nces th. blockage effect near th. casing th.n th. flows with.ut tip clearance. On th. oth.r h.nd, in th. case of th. th.ee-dimensional inducer, th. large backflow cavitation is observed around th. inlet of th. inducer, wh.re th. cavities are developed on th. casing by.th. tip clearance flows. Th. large pressure gradient between th. non-cavitating pressure side and th. cavitating suction side enh.nces th. tip clearance flows. Th. calculation considering th. tip clearance reproduces th. developed cavitation region similar to th.t of experimental visualizations. Additionally. th. backflow cavitation rotates with.th. speed slower th.n th. rotation speed of th. inducer. Th.n, th. rotation of backflow cavitation causes th. periodic fluctuation of th. outlet pressure greater th.n th.t of th. inlet pressure.

关键词： cavitation inducer tip clearance flow numerical analy.is

Attuned design of demand response program and M-FACTS for relieving congestion in a restructured market environment

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Frontiers in Energy 2015年第3期9卷 282-296页

作者： y. h.Sh.MI h. Sh.y.Gh. B. h.Sh.MI Tech.ical Engineering Department University of Mohaghegh Ardabili Ardabil *** Iran Network Studies Group Bakhtar Regional Electric Company Arak *** Iran

Th.s paper addresses th. attuned use of multi- converter flexible alternative current transmission sy.tems （M-FACTS） devices and demand response （DR） to perform congestion management （CM） in th. deregulated environment. Th. strong control capability.of th. M- FACTS offers a great potential in solving many.of th. problems facing electric utilities. Besides, DR is a novel procedure th.t can be an effective tool for reduction of congestion. A market clearing procedure is conducted based on maximizing social welfare （SW） and congestion as network constraint is paid by.using concurrently.th. DR and M-FACTS. A multi-objective problem （MOp） based on th. sum of th. pay.ents received by.th. generators for ch.nging th.ir output, th. total pay.ent received by.DR participants to reduce th.ir load and M-FACTS cost is sy.tematized. For th. solution of th.s problem a nonlinear time-vary.ng evolution （NTVE） based multi-objective particle swarm optimization （MOpSO） sty.e is formed. Fuzzy.decision-making （FDM） and tech.ique for order preference by.similarity.to ideal solution （TOpSIS） approach.s are employ.d for finding th. best compromise solution from th. set of pareto-solutions obtained th.ough.multi-objective particle swarm optimization-nonlinear time-vary.ng evolution （MOpSO-NTVE）. In a real power sy.tem, Azarbaijan regional power sy.tem of Iran, comparative analy.is of th. results obtained from th. application of th. DR ＆ unified power flow controller （UpFC） and th. DR ＆ M-FACTS are presented.

关键词： multi-converter flexible alternative currenttransmission sy.tems (M-FACTS) demand response,

Sy.th.sis of self-assembled nanorod vanadium oxide bundles by.sonoch.mical treatment

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Journal of Natural Gas Ch.mistry 2009年第3期18卷 312-318页

作者： y.h.taufiq-y.p y.C.Wong Z.Zainal M.Z.h.ssein Centre of Excellence for Cataly.is Science and Tech.ology Faculty of ScienceUniversiti Putra Malaysia Department of Ch.mistry Faculty of ScienceUniversiti Putra Malaysia

Self-assembled nanorod of vanadium oxide bundles were sy.th.sized by.treating bulk V2O5 with.h.gh.intensity.sonoch.mical tech.ique. Th. sy.th.sized materials were ch.racterized by.X-ray.diffraction （XRD）, scanning electron microscope （SEM）, transmission electron microscope （TEM） and temperature-programmed reduction （TpR） in h.. Cataly.ic beh.viour of th. materials over anaerobic n-butane oxidation was studied th.ough.temperature-programmed reaction （TpRn）. Cataly.ic evaluation of th. sonoch.mical treated V2O5 products was also studied on microreactor. XRD patterns of all th. vanadium samples were perfectly.indexed to V2O5. Th. morph.logies of th. nanorod vanadium oxides as sh.wn in SEM and TEM depended on th. duration of th. ultrasound irradiation. prolonging th. ultrasound irradiation duration resulted in materials with.uniform, well defined sh.pes and surface structures and smaller size of nanorod vanadium oxide bundles. h.-TpR profiles sh.wed th.t larger amount of oxy.en species were removed from th. nanorod V2O5 compared to th. bulk. Furth.rmore, th. nanorod vanadium oxide bundles, wh.ch.were produced after 90, 120 and 180 min of sonoch.mical treatment, sh.wed an additional reduction peak at lower temperature （-850 K）, suggesting th. presence of some h.gh.y.active oxy.en species. TpRn in n-butane/h. over th.se materials sh.wed th.t th. nanorod V2O5 with.h.gh.y.active oxy.en species sh.wed markedly.h.gh.r activity.th.n th. bulk material, wh.ch.was furth.r proven by.cataly.ic oxidation of n-butane.

关键词： nanorod vanadium oxide sonoch.mical treatment butane oxidation