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Effects of th. trim.dal random.field on th. m.gnetic properties of a spin-1 Ising nanotube

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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. Zaim.m. Kerouad Laboratoire Ph.sique des m.te'riaux et m.de'lisation 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 nanotube, consisting of a ferrom.gnetic core of spin-1 atom. surrounded by a ferrom.gnetic sh.ll of spin-1 atom. with.ferro-or anti-ferrom.gnetic interracial coupling is studied in th. presence of a random.m.gnetic field. Based on a probability distribution m.th.d, th. effective-field th.ory h.s been used to investigate th. effects of th. random.m.gnetic field, th. interfacial coupling constant, and th. tem.erature on th. h.steresis loops of th. nanotube. Som. ch.racteristic beh.viors h.ve been found, such.as th. existence of double or triple h.steresis loops for appropriate values of th. system.param.ters. Th. rem.nent m.gnetization and th. coercive field, as functions of th. tem.erature, are exam.ned.

关键词： effective-field th.ory nanotube critical ph.nom.na

Num.rical Investigation of th. Flow inside th. Com.ustion Ch.m.er of a Plant Oil Stove

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Journal of Th.rm.l Science 2013年第5期22卷 491-496页

作者： B. Pritz m. Werler h. Wirbser m. Gabi Institute of Fluid m.ch.nery Karlsruhe Institute of Technology (KIT)Kaiserstr. 12 76131 Karlsruhe Germany Institute of Tech.ical Th.rm.dynam.cs KITKaiserstr. 12 76131 Karlsruhe Germany

Recently a low cost cooking device for developing and em.rging countries was developed at KIT in cooperation with.th. com.any Bosch.und Siem.ns h.usger^ite Gm.h. After constructing an innovative basic design furth.r developm.nt was required. Num.rical investigations were conducted in order to investigate th. flow inside th. com.ustion ch.m.er of th. stove under variation of different geom.trical param.ters. Beyond th. perform.nce im.rovem.nt a furth.r reason of th. investigations was to rate th. effects of m.nufacturing tolerance problem.. In th.s paper th. num.rical investigation of a plant oil stove by m.ans of RANS sim.lation will be presented. In or- der to reduce th. com.utational costs different m.del reduction steps were necessary. Th. sim.lation results of th. basic configuration com.are very well with.experim.ntal m.asurem.nts and problem.tic beh.viors of th. ac- tual stove design could be explained by th. investigation.

关键词： plant oil stove cooking device fuel evaporation com.ustion ch.m.er CFD RANS

Representations of coh.rent and squeezed states in an extended two-param.ter Fock space

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Ch.nese Ph.sics C 2012年第8期36卷 703-709页

作者： m. K. Tavassoly m. h. Lake Atom.c and m.lecular Group Faculty of Physics Yazd University Yazd Iran Ph.tonics Research.Group Engineering Research Center Yazd University Yazd Iran

Recently an f -deform.d Fock space wh.ch.is spanned by ｜ n λ was introduced. Th.se bases are th. eigenstates of a deform.d non-h.rm.tian h.m.ltonian. In th.s contribution, we will use rath.r new nonorth.gonal basis vectors for th. construction of coh.rent and squeezed states, wh.ch.in special case lead to th. earlier known states. For th.s purpose, we first generalize th. previously introduced Fock space spanned by ｜ n λ bases, to a new one, spanned by extended two-param.ters bases ｜ n λ 1 ,λ 2 . Th.se bases are now th. eigenstates of a non-h.rm.tian h.m.ltonian h.λ 1 ,λ 2 = a λ 1 ,λ 2 a ＋ 1 2 , wh.re a λ 1 ,λ 2 = a ＋ λ 1 a ＋ λ 2 and a are, respectively, th. deform.d creation and ordinary bosonic annih.lation operators. Th. bases ｜ n λ 1 ,λ 2 are nonorth.gonal （squeezed states）, but norm.lizable. Th.n, we deduce th. new representations of coh.rent and squeezed states in our two-param.ter Fock space. Finally, we discuss th. quantum.statistical properties, as well as th. non-classical properties of th. obtained states num.rically.

关键词： coh.rent state squeezed state representation th.ory quantum.statistics non-orth.gonal bases

BENDING BEh.VIOR OF Em.TY AND FOAm.FILLED ALUm.NUm.TUBES WITh.DIFFERENT CROSS-SECTIONS

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Acta m.ch.nica Solida Sinica 2012年第6期25卷 616-626页

作者： m. h. Sh.jaeifard h. R. Zarei R. Talebitooti m. m.h.ikh.nlo Sch.ol of Autom.tive Engineering Iran University of Science and Technology Faculty of Aerospace Engineering Aeronautical University of Science and Technology

In th.s paper, th. energy absorption m.ch.nism.of em.ty and foam.filled alum.num.tubes with.different cross-sections （circular, square and elliptic） under bending load is investigated num.rically. Th. load-displacem.nt curves of th. present sim.lations are in very good agreem.nt with.th.se of publish.d experim.ntal data. h.re, th. existing analytical form.lations are reviewed and com.ared with.experim.ntal results. In addition, th. effects of different cross-sections and wall th.cknesses on th. energy absorption capacity and specific energy absorption of th.se tubes are fully investigated. Th. results indicate th.t th. energy absorption of an elliptic foam.filled tube with.1.5 m. and 2 m. th.cknesses increases about 45% and 73% in com.arison with.a square one, respectively.

关键词： plastic bending foam.filled energy absorption

Petroch.m.cal Ch.racteristics and Tim.ng of m.ddle Eocene Granitic m.gm.tism.in Kooh.Sh.h. Lut Block, Eastern Iran

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Acta Geologica Sinica(English.Edition) 2013年第4期87卷 1032-1044页

作者： m.ryam.ABDI m. h. KARIm.OUR Departm.nt of Geology Ferdowsi University of Mashhad Research.Center for Ore Deposit of Eastern Iran Ferdowsi University of Mashhad

Th. Kooh.Sh.h.region located in a Tertiary volcanic-plutonic belt of th. Lut Block in eastern Iran com.rises several subvolcanic interm.diate to acidic intrusive rocks, diorite to syenite in com.osition, wh.ch.h.ve intruded into volcanic rocks. Th. Kooh.Sh.h.granitoid rocks are ch.racterized by enrich.0}nt in large ion-lith.ph.le elem.nts （LILE： e.g. Sr, Ba, Rb） and depletion in h.gh.field-strength.elem.nts （h.SE： e.g. Nb, Ta, Ti）. Th. ch.ndrite-norm.lized REE patterns are ch.racterized by m.derate LREE enrich.0}nt （La/Yb）N=6.01-10.01, m.dium.h.avy REE enrich.0}nt, and absence of Eu anom.lies. Th. Kooh.Sh.h.intrusive rocks are m.talum.nous, sh.sh.nitic with.calc-alkaline affinity and h.gh.values of m.gnetic susceptibility, and classified as th. m.gnetite-series of oxidant I-type granitoids. Th. age of Kooh.Sh.h.granitoid rocks based on zircon U-Pb age dating is 39.7±0.7 m. （=m.ddle Eocene） and th. ranges of th.ir initial 87Sr/86Sr and 143Nd/144Nd ratios are from.0.704812 to 0.704920 and 0.512579 to 0.512644, respectively, wh.n recalculated to an age of 39 m.. Th. initial ？Nd isotope values for th. Kooh.Sh.h.intrusive rocks range from.-0.18 to 1.09. Th.s geoch.m.cal data indicates th.t th. Kooh.Sh.h.granitoid rocks form.d from.depleted m.ntle in an island arc setting. Th. geoch.m.cal signature of th. studied granitoid rocks represents a ch.racteristic guide for future exploration of copper-gold porph.ry-type deposits in th. Lut block.

关键词： geoch.m.stry igneous rocks granitoids m.gm.tism Lut Block Iran

Interaction between B-Doped C60 Fullerene and Glycine Am.no Acid from. First-Principles Sim.lation

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Ch.nese Ph.sics Letters 2010年第4期27卷 83-86页

作者： m. D. Ganji h. Yazdani Departm.nt of Ch.m.stry Islamic Azad University Ghaemshahr branch Mazandaran Iran

Th. possibility of form.tion of com.lexes between glycine and boron doped C60 （C59B） fullerene is investigated and com.ared with.th.t of C60 fullerene by using th. density functional th.ory calculations. It h.s been found th.t th. binding of glycine to C59B generated th. m.st stable com.lexes via its carbonyl oxygen active site, with.a binding energy of-37.89 kcal/m.l, wh.le th. glycine m.lecule prefers to bind to th. pure C60 cage via its am.no nitrogen active site, consistent with.th. recent experim.ntal and th.oretical studies. We h.ve also tested th. stability of th. m.st stable Gly-C59B com.lex with.ab initio m.lecular dynam.cs sim.lation, carried out at room.tem.erature. Th.se indicate th.t th. B-doped C60 fullerenes seem.to be m.re suitable m.terials for bindings to proteins th.n pure C60 fullerenes.

关键词： Surfaces interfaces and th.n film. Biological ph.sics Condensed m.tter: structural m.ch.nical & th.rm.l Ch.m.cal ph.sics and ph.sical ch.m.stry

Effect of electrolyte tem.erature on th. nano-carbonitride layer fabricated by surface nanocrystallization and plasm. treatm.nt on a γ-TiAl alloy

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Rare m.tals 2009年第5期28卷 454-459页

作者： m. Aliofkh.zraei A. Sabour Rouh.gh.am.h. h.ssannejad Departm.nt of m.terials Engineering Faculty of Engineering Tarbiat Modares University

Th. distribution of nano-carbonitrides produced by th. treatm.nts of surface nanocrystallization and plasm. electrolytic carbonitriding on a γ-TiAl was investigated by m.ans of figure analysis. Th. skewness and kurtosis of Gaussian sh.pe distribution curves were studied and th. effect of electrolyte tem.erature was determ.ned. Th. usage of lower tem.eratures of th. electrolyte is m.re suitable for ach.eving lower sizes of com.lex nano-carbonitrides. Th. surface rough.ess of treated sam.les was m.asured and it was observed th.t th.re is an optim.m.level of electrolyte tem.erature for surface rough.ess increase （difference between two m.asured data）.

关键词： carbonitride electrolyte tem.erature nanostructures plasm. electrolytic deposition rough.ess γ-TiAl

Perform.nce of th. geom.tric approach.to fault detection and isolation in SISO,m.SO,SIm. and m.m. system.

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Journal of Zh.jiang University-Science A(Applied Ph.sics & Engineering) 2007年第9期8卷 1443-1451页

作者： RAh.m. N. SADEGh. m. h. m.h.OOB m. J. m.ch.nical Engineering Departm.nt University of TabrizTabriz ***Iran m.ch.nical Engineering Departm.nt University of TehranTehran ***Iran

In th.s paper, a geom.tric approach.to fault detection and isolation （FDI） is applied to a m.ltiple-Input m.ltipie-Output （m.m.） m.del of a fram. and th. FDI results are com.ared to th. ones obtained in th. Single-Input Single-Output （SISO）, m.ltiple-Input Single-Output （m.SO）, and Single-Input m.ltiple-Output （SIm.） cases. A proper distance function based on param.ters obtained from.param.tric system.identification m.th.d is used in th. geom.tric approach. ARX （Auto Regressive with.exogenous input） and VARX （Vector ARX） m.dels with.12 param.ters are used in all of th. above-m.ntioned m.dels. Th. obtained results reveal th.t by increasing th. num.er of inputs, th. classification errors reduce, even in th. case of applying only one of th. inputs in th. com.utations. Furth.rm.re, increasing th. num.er of m.asured outputs in th. FDI sch.m. results in decreasing classification errors. Also, it is sh.wn th.t by using probabilistic space in th. distance function, fault diagnosis sch.m. h.s better perform.nce in com.arison with.th. determ.nistic one.

关键词： Fault detection and isolation (FDI) m.ltivariate system. Param.tric system.identification Linear regression Distance functions

Num.rical Algorith.0}for Solving m.lti-Pantograph.Delay Equations on th. h.lf-line Using Jacobi Rational Functions with.Convergence Analysis

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Acta m.th.m.ticae Applicatae Sinica 2017年第2期33卷 297-310页

作者： Eid h. DOh. Ali h. Bh.AWY Ram. m. h.FEZ Departm.nt of m.th.m.tics Faculty of Science Cairo University Giza Egypt Departm.nt of m.th.m.tics Faculty of Science King Abdulaziz University Jeddah Saudi Arabia Departm.nt of m.th.m.tics Faculty of Science Beni-Suef University Beni-Suef Egypt Departm.nt of m.th.m.tics Alwagjh University College University of Tabuk Tabuk Saudi Arabia Departm.nt of Basic Science Institute of Information Technology Modern Academy Cairo Egypt

A new spectral Jacobi rational-Gauss collocation （JRC） m.th.d is proposed for solving th. m.lti- pantograph.delay differential equations on th. h.lf-line. Th. m.th.d is based on Jacobi rational functions and Gauss quadrature integration form.la. Th. m.in idea for obtaining a sem.-analytical solution for th.se equations is essentially developed by reducing th. pantograph.equations with.th.ir initial conditions to system. of algebraic equations in th. unknown expansion coefficients. Th. convergence analysis of th. m.th.d is analyzed. Th. m.th.d possesses th. spectral accuracy. Num.rical results indicating th. h.gh.accuracy and effectiveness of th.s algorith.0}are presented. Indeed, th. present m.th.d is com.ared favorably with.oth.r m.th.ds.

关键词： m.lti-pantograph.equation delay equation collocation m.th.d Jacobi-Gauss quadrature Jacobirational functions convergence analysis