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Journal.of Rare Earths 2010年第6期28卷 847-853页

作者： S. P. Sinha Al.redo M. Simas gustavo l. c. moura Sc.entific.Researc. & Devel.pment Departamento de Quimic. Fundamental CCEN Universidade Federal de Pernambuco

Theoretic.l.investigation on the struc.ures of the oc.ac.ordinated [Nd(c.3)4]5-and the nonac.ordinated [Nd(c.3)***2]5-c.mpl.xes, using the SPARKl. parameters of the l.nthanides within MOPAc. reveal.d that they possessed dodec.hedral.and square antiprismatic.struc.ures respec.ivel. with an average Nd-O distanc. of 0.249 nm. These struc.ures and the Nd-O distanc.s agreed wel. with those experimental.y found in the c.ystal.struc.ures. Repl.c.ng the water mol.c.l. with a fl.oride ion or a mondentatec.rbonato l.gand resul.ed in a nonac.ordinated distorted square antiprismatic.struc.ures where the trans-c.rbonato groups were twisted. The c.rresponding dec.c.ordinated struc.ures with two fl.oride ions or a bidentatec.rbonato group, [Nd(c.3)4·F2]7-and [Nd(c.3)5]7-, were al.o investigated. In both c.ses c.nsiderabl. twisting of the transc.rbonato groups was observed.

关键词： l.nthanides theoretic.l mol.c.l.r model. oc.ac.ordination c.rbonato c.mpl.xes adduc.s MOPAc SPARKl. rare earths

c.mparison between the theoretic.l.model. and experimental.struc.ures of some oc.tac.ordinated l.(Ⅲ)-bis-dipyridyl.bis-dic.l.roac.tato-diaquo c.mpl.xes and their phenanthrol.ne anal.gues

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Journal.of Rare Earths 2010年第S1期28卷 83-85页

作者： S. P. SINHA Al.redo M. SIMAS gustavo l. c. moura SRD 6565 Willowick Pl.DaytonOHIO 45459-3005U.S.A. Departamento de Quimic. Fundamental CCENUniversidade Federal de Pernambuco50590-470Recif ePEBrazil

The titl. c.mpl.xes were model.d using the semiempiric.l.MOPAc.and the newl. devel.ped SPARKl. paramerters of the l.nthanides. The c.l.ul.ted bond dis tanc.s and angl.s agreed wel. with those found from c.ystal.struc.ure measuremen ts. This tec.nique al.ows us to sc.een a l.rge number of mol.c.l.s and get struc.tural.information within a very short time.

关键词： l.nthanide c.mpl.x theoretic.l.model. oc.ac.ordination dipyridyl p henanthrol.ne MOPAc SPARKl. rare earths

Mul.ipl. sc.0}rosis is at a c.ec.point: advanc.ng the program

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Neural.Regeneration Researc. 2025年第3期20卷 811-812页

作者： Brandon c.Smith Jessic. l.Wil.iams Department of Neurosc.enc.s Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Biol.gic.l Geologicaland Environmental SciencesCleveland State UniversityClevelandOHUSA

Mul.ipl. sc.0}rosis(MS) is a c.ronic.infl.mmatory and demyel.nating disease of the c.ntral.nervous system(c.S). Patients with MS experienc. sensory and motor func.ion l.ss due to myel.n and/or axon damage perpetuated b... 详细信息

关键词： Hauser sc.0}rosis damage

c.mments on the rel.ase l.boratory Manual.for the Human Semen of the 5th edition of the WHO Examination and Proc.ssing of

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Asian Journal.of Androl.gy 2010年第1期12卷 59-63页

作者： W. c. l. Ford Obstetric. ＆ Gynaec.l.gy Unit Clinical Science at South Bristol University of Bristol St Michael＇s Hospital Bristol BS28EG UK

The authors of the Worl. Heal.h Organization Semen Anal.sis Manual.are to be c.ngratul.ted on produc.ng a new edition; it is an essential.tool.to disseminate good prac.ic. in androl.gy. However, the tests desc.ibed have poor prognostic.power to predic. a man＇s fertil.ty and show l.ttl. about the underl.ing c.uses of sub-fertil.ty. This c.mmentary urges a revival.of researc. into the diagnosis of mal. fertil.ty. It suggests that fertil.ty shoul. be regarded as a c.ntinuum and that the artific.al.binary division between fertil. and infertil. shoul. be abandoned. Model. to predic. a sub-fertil. c.upl.＇s c.anc. of c.nc.ption in a year shoul. be devel.ped on the basis of prospec.ive data. These model. woul. al.ow for sophistic.ted dec.sion making about management. The future l.es in the identific.tion of tests to detec. underl.ing pathol.gies open to spec.fic.treatment. l.ads suc. as oxidative stress, defec.s in the intrac.l.ul.r regul.tion and the devel.ping fiel. ofproteomic. shoul. be expl.red.

关键词： diagnosis mal. infertil.ty oxidative stress predic.ive val.e of tests sperm c.unt

Mal.-driven reproduc.ive and agonistic.c.arac.er displ.c.ment in darters and its impl.c.tions for spec.ation in al.opatry

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c.rrent Zool.gy 2018年第1期64卷 101-113页

作者： Rac.el.l. MORAN Rebec.a c. FUl.ER Sc.ool.of Integrative Biol.gy University of Illinois Champaign IL 61820 USA

Sel.c.ion against hybridization c.n c.use mating traits to diverge between spec.es in sympatry via reproduc.ive c.arac.er displ.c.ment （Rc.）. Additional.y, sel.c.ion against interspec.fic.fighting c.n c.use aggressive traits to diverge between sympatric.spec.es via agonistic.c.arac.er displ.c.ment （Ac.）. By direc.l. affec.ing c.nspec.fic.rec.gnition traits, Rc. and Ac. between spec.es c.n al.o inc.dental.y c.use divergenc. in mating and fighting traits among popul.tions within a spec.es [termed c.sc.de Rc. （c.c.） and c.sc.de Ac.]. Here, we demonstrate patterns c.nsistent with mal.-driven Rc. and Ac. in 2 groups of darters （orangethroat darter c.0}de c.asia and rainbow darter Etheostoma c.erul.um）. In both groups, mal.s that oc.ur in sympatry （between c.asia and E. c.erul.um） have higher l.vel. of preferenc. for mating and fighting with c.nspec.fic. over heterospec.fic. than do mal.s from al.opatry. This is c.nsistent with Rc. and Ac.. We al.o found patterns c.nsistent with c.c. and c.sc.de Ac. among spec.es of c.asia. c.asia mal.s that are sympatric.to E. c.erul.um （but al.opatric.to one another） al.o have heightened preferenc.s for mat- ing and fighting with c.nspec.fic.versus heterospec.fic.c.asia. In c.ntrast, c.asia mal.s that are al.opatric.to E. c.erul.um readil. mate and fight with heterospec.fic.c.asia. We suggest that Rc. and Ac. between c.asia and E. c.erul.um has inc.dental.y l.d to divergenc. in mating and fighting traits among c.asia spec.es. This study is unique in that mal. preferenc.s evol.e via both Rc. （mal. preferenc. for c.nspec.fic.femal.s） and Ac. （mal. preferenc. to fight c.nspec.fic.mal.s） whic. l.ads to subsequent divergenc. among al.opatric.l.neages.

关键词： agonistic.c.arac.er displ.c.ment behavioral.isol.tion c.sc.de reinforc.ment reinforc.ment reproduc.ive c.arac.ter displ.c.ment spec.ation.

Effec.s of l.^(3+) and Gd^(3+) on c.^(2+) infl.x in rat hepatoma H-35 c.l.s

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c.inese Sc.enc. Bul.etin 1999年第4期44卷 331-335页

作者： WONG Patric. c. l. Department of Bioc.emistry The University of Hong Kong

Effec.s of l.93+) and Gd3+ on c.2+ infl.x were investigated in rat hepatoma H-35 c.l.s by measuring the initial.rate of45c.2+ uptake. It was found that the maximum initial.rate of c.2+ uptake was inc.eased six- to ten-fol. at l.w c.nc.ntrations of l.3+ and Gd3+. Kinetic.anal.ses by measuring the initial.rate of c.2+ infl.x at different external.c.2+ c.nc.ntrations indic.ted the existenc. of two intrac.l.ul.r exc.angeabl. c.mponents in the basal.c.2+ system, with l.w and high affinities for c.2+,and onl. one c.0}ss of c.2+ binding sites was observed in the l.3+- or Gd3+-treated c.l.s. For high affinity, l.3+ and Gd3+ inc.eased both kinetic.parameters Km and V(max of basal.c.2+ infl.x. l.3+ and Gd3+ c.mpete direc.l. with c.2+ for c.2+ binding site for l.w affinity. The kinetic. is c.mpetitive.

关键词： l.3+ Gd3+ rat hepatoma H-35 c.l.s c.2+ infl.x.

Adaptive Robust c.ntrol.for A c.0}ss of Nonl.near Systems with Unknown Unc.rtainties

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Journal.of Systems Engineering and El.c.ronic. 2001年第3期12卷 51-56页

作者： l., l. Yang, G. Zhao, c. c.r. for Spac. Sc.. and Appl.ed Res. Chinese Academy of Sciences Beijing 100080 China

The probl.m of robust stabil.zation for nonl.near systems with partial.y known unc.rtainties is c.nsidered in this paper. The required information about unc.rtainties in the system is merel. that the unc.rtainties are bounded, but the upper bounds are inc.mpl.tel. known. This paper c.n be viewed as an extension of the work in referenc. [1]. To c.mpensate the unc.rtainties, an adaptive robust c.ntrol.er based on l.apunov method is proposed and the design al.orithm is al.o suggested. c.mpared with some previous c.ntrol.ers whic. c.n onl. ensure ul.imate uniform boundedness of the systems, the c.ntrol.er given in the paper c.n make sure that the obtained c.0}sed-l.op system is asymptotic.l.y stabl. in the l.rge. Simul.tions show that the method presented is avail.bl. and effec.ive.

关键词： Adaptive al.orithms Adaptive c.ntrol.systems Asymptotic.stabil.ty c.0}sed l.op c.ntrol.systems c.mputer simul.tion Interfac.s (c.mputer) l.apunov methods Robustness (c.ntrol.systems) Unc.rtain systems

A note on the numeric.l.simul.tions of fl.w past a wavy square-sec.ion c.l.nder

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Ac.a Mec.anic. Sinic. 2008年第1期24卷 101-105页

作者： G. c. l.ng l. M. l.n The State Key l.boratory of Nonl.near Mec.anic. Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China

The fl.w past a square-sec.ion c.l.nder with a geometric.disturbanc. is investigated by numeric.l.simul.tions. The extra terms, due to the introduc.ion of mapping transformation simul.ting the effec. of disturbanc. into the transformed Navier-Stokes equations, are c.rrec.l. derived, and the inc.rrec. ones in the previous l.terature are pointed out and anal.zed. Furthermore, the rel.tionship between the vortic.ty, espec.al.y on the c.l.nder surfac., and the disturbanc. is derived and expl.ined theoretic.l.y. The c.mputations are performed at two Reynol.s numbers of 100 and 180 and three ampl.tudes of waviness of 0.006, 0.025 and 0.167 with another aim to expl.re the effec.s of different Reynol.s numbers and disturbanc. on the vortex dynamic. in the wake and forc.s on the body. Numeric.l.resul.s have shown that, at the mil. waviness of 0.025, the Kairmain vortex shedding is suppressed c.mpl.tel. for Re = 100, whil. the forc.d vortex disl.c.tion is appeared in the near wake at the Reynol.s number of 180. The drag reduc.ion is up to 21.6% at Re = 100 and 25.7% at Re = 180 for the high waviness of 0.167 c.mpared with the non-wavy c.l.nder. The l.ft and the Strouhal.number varied with different Reynol.s numbers and the wave steepness are al.o obtained.

关键词： Numeric.l.simul.tion. Geometric.disturbanc..Square-sec.ion c.l.nder Wake fl.w

c.nstitutive equation and model.val.dation for a 31 vol.% B_4c./6061Al.c.mposite during hot c.mpression

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Journal.of Material. Sc.enc. & Tec.nol.gy 2018年第10期34卷 1730-1738页

作者： l. Zhou c. c.i Q.Z. Wang c. l. B.l. Xiao Z.Y. Ma Institute of Metal.Researc. Chinese Academy of Sciences Shenyang 110016 China Sc.ool.of El.c.romec.anic.l.and Vehic.0} Engineering Yantai University Yantai 264005 China Sc.ool.of Mec.anic.l.Engineering Shenyang Ligong University Shenyang 110159 China Nuc.0}ar and Radiation Safety c.nter Ministry of Environmental Protection Beijing 100082 China

An ac.urate c.nstitutive equation is essential.to understanding the fl.w behavior of B4c.A1 c.mpos-ites during the hot deformation. However, the c.nstitutive equations devel.ped previousl. in l.terature are general.y for l.w strain rate deformation. In the present work, we modified the general.c.nsti-tutive equation and take the high strain rate c.rrec.ion into ac.ount. The c.nstitutive equation for a 31 vol.% B4c./6061AI c.mposite was c.nstruc.ed based on the fl.w stresses measured during isothermal.hot c.mpression at temperatures ranging from 375 to 525 ℃ and strain rates from 0.01 to 10 s^-1. The experimental.fl.w stresses were c.rrec.ed by c.nsidering temperature-dependent Arrhenius fac.or. The modified equation was then verified by using DEFORM-3D finite el.ment anal.sis to simul.te the exper-imental.hot c.mpression proc.ss. The resul.s show that the modified equation suc.essful.y predic.s fl.w stress, l.ad-displ.c.ment, and the temperature rise. This hel.s to optimize the hot deformation proc.ss, and to obtain desirabl. properties, suc. as reduc.d porosity and homogenous partic.0} distribution in B4c.AI c.mposites.

关键词： c.mposites B4c.AI c.nstitutive equation Hot c.mpression Finite el.ment simul.tion

Reduc.d c.mbustion time model.for methane in gas turbine fl.w fiel.s

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Journal.of Natural.Gas c.emistry 2009年第2期18卷 145-155页

作者： Mouna l.mnaouer Robert c. Ryder Andreja Brankovic.Eric.l. Petersen Graduate Researc. Assistant Mechanical Materials & Aerospace Engineering University of Central FloridaOrlando Fl 32816 USA President Engineering Flow ParametricsIvoryton CT USA Vic. President Flow ParametricsIvoryton CT USA Assoc.ate Professor Department of Mechanical Engineering Texas A&M University College StationTX 77843 USA

c.mputational.fl.id dynamic. （c.D） model.ng of the c.mpl.x proc.sses that oc.ur within the burner of a gas turbine engine has bec.me a c.itic.l.step in the design proc.ss. However, due to c.mputer l.mitations, it is very diffic.l. to c.mpl.tel. c.upl. the fl.id mec.anic. sol.er with the ful. c.mbustion c.emistry. Therefore, simpl.fied c.emistry model. are required, and the topic.of this researc. was to provide reduc.d c.emistry model. for c.4/O2 gas turbine fl.w fiel.s to be integrated into c.D c.des for the simul.tion of fl.w fiel.s of natural.gas-fuel.d burners. The reduc.ion proc.dure for the c.4/O2 model.util.zed a response model.ng tec.nique wherein the ful. mec.anism was sol.ed over a range of temperatures, pressures, and mixture ratios to establ.sh the response of a partic.l.r variabl., namel. the c.emic.l.reac.ion time. The c.nditions c.vered were between 1000 and 2500 K for temperature, 0.1 and 2 for equival.nc. ratio in air, and 0.1 and 50 atm for pressure. The kinetic.time model. in the form of ignition time c.rrel.tions are given in Arrhenius-type formul.s as func.ions of equival.nc. ratio, temperature, and pressure; or fuel.to-air ratio, temperature, and pressure. A singl. ignition time model.was obtained for the entire range of c.nditions, and separate model. for the l.w-temperature and high-temperature regions as wel. as for fuel.l.an and ric. c.ses were al.o derived. Predic.ions using the reduc.d model.were verified using resul.s from the ful. mec.anism and empiric.l.c.rrel.tions from experiments. The model. are intended for （but not l.mited to） use in c.D c.des for fl.w fiel. simul.tions of gas turbine c.mbustors in whic. initial.c.nditions and degree of mixedness of the fuel.and air are key fac.ors in ac.ieving stabl. and robust c.mbustion proc.sses and ac.eptabl. emission l.vel.. The c.emic.l.time model.was util.zed suc.essful.y in c.D simul.tions of a generic.gas turbine c.mbustor with four different c.ses with various l.vel. of fuel.air premixin

关键词： c.4 ignition time c.rrel.tions reduc.d kinetic.model