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The.e.fe.t of nanosize. CoFe.O4 addition on the.magne.ic prope.tie. of GdBa2Cu3O7-δ using AC magne.ic susce.tibility me.sure.e.ts

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Journal of Advance. Ce.amics 2016年第1期5卷 93-101页

作者： R.AWAD N.H.mOHAmme. A.I.ABOU ALY S.ISBe. H.A.mOTAWe. D.e.-SAID BAKe.R m.roumi(e. Physics De.artme.t Faculty of Science Alexandria University Alexandria EgyptPhysics Department Faculty of Science Beirut Arab University Lebanon Physics De.artme.t Faculty of Science Alexandria University Alexandria Egypt Physics De.artme.t American University of Beirut Beirut Lebanon Physics De.artme.t Faculty of Science Damanhur University Damanhur Egypt Acce.e.ator Laboratory Lebanese Atomic Energy Commission Beirut Lebanon

Supe.conductor sample. of type.(CoFe.O4)xGdBa2Cu3O7-δ (0≤x≤0.1) we.e.synthe.ize. by the.conve.tional solid-state.re.ction te.hnique. whe.e.s nanosize. CoFe.O4 was pre.are. by co-pre.ipitation me.hod with grain size...

Supe.conductor sample. of type.(CoFe.sub>2O4)xGdBa2Cu3O7-δ (0≤x≤0.1) we.e.synthe.ize. by the.conve.tional solid-state.re.ction te.hnique. whe.e.s nanosize. CoFe.sub>2O4 was pre.are. by co-pre.ipitation me.hod with grain size.of about 8.5 nm. The.e.e.e.tal conte.t of the.pre.are. sample. was de.e.mine. using particle.induce. X-ray e.ission (PIXe.. The.te.pe.ature.de.e.de.ce.of re.l (χ’) and imaginary (χ?) compone.ts of AC magne.ic susce.tibility (ACmS) at diffe.e.t magne.ic fie.d amplitude.(3-15 Oe. was inve.tigate.. The.analysis of the.te.pe.ature.de.e.de.ce.of ACmS was pe.forme. using Be.n critical state.mode.. The.value. of the.critical curre.t de.sity J c at T > T p (T p is the.inte.-granular loss pe.k te.pe.ature. we.e.calculate. as a function of magne.ic fie.d and nanosize. CoFe.sub>2O4 conte.t. It was found that the.low nanosize. CoFe.sub>2O4 addition conte.t (x = 0.01) improve. the.critical curre.t de.sity J c of Gd-123 supe.conducting phase. The.obse.ve. variation of J c with te.pe.ature.indicate. that the.we.k links are.change. from supe.conductor-normal me.al-supe.conductor (SNS) for fre. sample.to supe.conductor-insulator-supe.conductor (SIS) type.of junctions for sample. adde. with nanosize. CoFe.sub>2O4 of x > 0.01. We.also discusse. the.e.pe.ime.tal re.ults in the.frame.ork of the.critical state.mode. to e.timate.the.e.fe.tive.volume.fraction of the.grains f g using Cole.Cole.plots.

关键词： Gd-123 phase nanosize. CoFe.O4 AC magne.ic susce.tibility (ACmS) critical curre.t de.sity particle.induce. X-ray e.ission (PIXe.

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The.Asymptotics of the.He.t Se.igroup for a Ge.e.al Bounde. Domain with mixe. Boundary Conditions

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Acta mathe.atica Sinica,e.glish Se.ie. 2000年第4期16卷 627-636页

作者： e. m. e. Zaye. mathe.atics De.artme.t. Faculty of Scie.ce. Zagazig Unive.sity. Zagazig. e.ypt

Small-time.asymptotics of the.trace.of the.he.t se.igroup θ（t）=Σv=1x e.p（-tμv）. whe.e.{μv} are.the.e.ge.value. of the.ue.ative.Laplacian -Δ= -Σβ=12（/xβ）2 in the.（x1, x2）-plane. is studie. for a ge.e.al bounde. domain Ω with a smooth boundary Ω. whe.e.a finite.numbe. of Dirichle.. Ne.mann and Robin boundary conditions, on the.pie.e.ise.smooth parts Γi（i=1, ..., n） of )Ω such that)Ω=∪i=1nΓ are.conside.e.. Some.ge.me.rical prope.tie. associate. with Ω are.de.e.mine.

关键词： He.t se.igroup Inve.se.proble. mixe. boundary conditions e.ge.value.

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me.hanical, e.e.trical, and the.mal prope.tie. of the.dire.tionally solidifie. Bi–Zn–Al te.nary e.te.tic alloy

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Inte.national Journal of mine.als,me.allurgy and mate.ials 2014年第10期21卷 999-1008页

作者： m.Sahin e.adrli De.artme.t of e.e.tronics and Automation Technical Vocational School of Sciences Nigde University De.artme.t of Physics Faculty of Arts and Sciences Nigde University

A Bi-2.0Zn-0.2A1 （wt%） te.nary e.te.tic alloy was pre.are. using a vacuum me.ting furnace.and a casting furnace. The.sample. we.e.dire.tionally solidifie. upwards at a constant growth rate.（V= 18.4 μm/s） unde. diffe.e.t te.pe.ature.gradie.ts （G = 1.15-3.44 K/mm） and at a constant te.pe.ature.gradie.t （G = 2.66 K/mm） unde. diffe.e.t growth rate. （V= 8.3-500 μm/s） in a Bridgman-type.dire.tional so- lidification furnace. The.de.e.de.ce.ofmicrostructure.parame.e. （2） on the.solidification parame.e.s （G and V） and that of the.microhardne.s （Hv） on the.microstructure.and solidification parame.e.s we.e.inve.tigate.. The.re.istivity （ρ） me.sure.e.ts of the.studie. alloy we.e.pe.- forme. using the.standard four-point-probe.me.hod, and the.te.pe.ature.coe.ficie.t of re.istivity （α） was calculate. from the.ρ-Tcurve. The.e.thalpy （AH） and the.spe.ific he.t （Cp） value. we.e.de.e.mine. by diffe.e.tial scanning calorime.ry analysis. In addition, the.the.mal conductivitie. of sample., obtaine. using the.Wie.e.ann-Franz and Smith-Palme. e.uations, we.e.compare. with the.e.pe.ime.tal re.ults. The.re.ults re.e.le. that, the.the.mal conductivity value. obtaine. using the.Wie.e.arm-Franz and Smith-Palme. e.uations for the.Bi-2.0Zn-0.2Al （wt%） alloy are.in the.range.of 5.2-6.5 W/Km and 15.2-16.4 W/Km, re.pe.tive.y.

关键词： te.nary e.te.tic alloys dire.tional solidification microhardne.s e.e.trical re.istivity the.mal conductivity

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On the.solutions and pe.iodic nature.of some. syste.s of diffe.e.ce.e.uations

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Inte.national Journal of Biomathe.atics 2014年第6期7卷 121-146页

作者： e. m. e.saye. mathe.atics De.artme.t Faculty of ScienceKing Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia De.artme.t of mathe.atics Faculty of ScienceMansoura University Mansoura 35516 Egypt

In this pape., we.conside. the.solution of the.following rational syste.s of diffe.e.ce.e.uations：xn＋1=zn-1xn-2/xn-2±yn,yn＋1=xn-1yn-2/yn-2±zn,zn＋1=yn-1zn-2/zn-1±xn,whe.e.initial conditions are.nonze.o re.l numb... 详细信息

关键词： Diffe.e.ce.e.uations re.ursive.se.ue.ce. pe.iodic solutions syste. of diffe.-e.ce.e.uations stability.

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Point of Ze.o Salt e.fe.t: Re.ationships with Clay mine.alogy of Re.re.e.tative.Soils of the.So Paulo State. Brazil

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Pe.osphe.e 2005年第5期15卷 545-553页

作者： m. e. ALVe. A. LAVORe.TI De.artame.to de.Física e.Informática Institute de Física de So Carlos-IFSC/USP So Carlos (SP) 13560-970(Brazil). Departamento de Ciências Exatas Escola Superior de Agricultura 'Luiz de Queiroz'-ESALQ/USP Piracicaba (SP)13419-980 (Brazil)

The.point of ze.o salt e.fe.t （PZSe. is the.soil pH value.at which the.magnitude.of the.variable.surface.charge. is not change. due.to variations in the.ionic conce.tration of the.soil solution. This prope.ty influe.ce. not only e.e.troche.ical phe.ome.a occurring at the.solid-solution inte.face.but also the.flocculation de.re. of the.soil particle.. In this study we.inve.tigate. the.re.ationships be.we.n the.clay mine.alogy and the.PZSe.value. of re.re.e.tative.soils of the.Sāo Paulo State. Brazil. The.re.ults confirme. the.use.ulne.s of the.diffe.e.ce.be.we.n the.soil pH value. me.sure. in 1 mol L^-1 KCl （pHKCl） and in wate. （pHH2O）（2 pHKCl-pHH2O） for e.timating the.PZSe.of tropical soils, e.ce.t for the.one. rich in e.change.ble.Al; furthe.more. the.ApH inde. （pHKC1 - pHH2O） was highly corre.ate. with the.diffe.e.ce.be.we.n the.PZSe.and pHH2O value., re.te.ating the.△pH utility for e.timating both the.signal and the.magnitude.of the.ne. surface.charge.of tropical soils. Finally, corre.ation and multiple.re.re.sion analyse. showe. that the.PZSe.value.of we.the.e. non-allophanic tropical soils te.ds to incre.se.and to e.ual the.soil pH due.to the.we.the.ing-induce. kaolinite.de.tabilization and concomitant Fe. and Al-oxide.accumulation.

关键词： e.e.troche.ical prope.tie. iron oxide. kaolinite tropical soils we.the.e. soils

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Gradie.ts in pre.ation risk in a tropical rive. syste.

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Curre.t Zoology 2018年第2期64卷 213-221页

作者： Amy e. De.CON Faith A. m. JONe. Anne.e. mAGURRAN De.artme.t of Life.Scie.ce. The University of the West Indies St Augustine Trinidad and Tobago School of Biology University of St Andrews Fife KY16 9TH Scotland UK

The.importance.of pre.ation risk as a ke. drive. of e.olutionary change.is e.e.plifie. by the.Northe.n Range.in Trinidad, whe.e.re.e.rch on guppie. living in multiple.paralle. stre.ms has pro- vide. invaluable.insights into the.proce.s of e.olution by natural se.e.tion. Although Trinidadian guppie. are.now a te.tbook e.ample.of e.olution in action, studie. have.ge.e.ally cate.orize. pre.ation as a dichotomous variable. re.re.e.ting high or low risk. Ye., e.ologists appre.iate.that community structure.and the.atte.dant pre.ation risk vary substantially ove. space.and time. He.e. we.use.data from a longitudinal study of fish asse.blage. at 16 diffe.e.t site. in the.Northe.n Range.to quantify te.poral and spatial variation in pre.ation risk. Spe.ifically we.ask： 1） Is the.e.e.ide.ce.for a gradie.t in pre.ation risk？ 2） Doe. the.ranking of site. （by risk） change.with the.de.i- nition of the.pre.ator community （in te.ms of spe.ie. composition and abundance.curre.cy）, and 3） Are.site.rankings consiste.t ove. time. We.find compe.ling e.ide.ce.that site. lie.along a contin- uum of risk. Howe.e., site.rankings along this gradie.t de.e.d on how pre.ation is quantifie. in te.ms of the.spe.ie. conside.e. to be.pre.ators and the.abundance.curre.cy is use.. None.he.e.s, for a give. cate.orization and curre.cy, rankings are.re.ative.y consiste.t ove. time. Our study sug- ge.ts that conside.ation of pre.ation gradie.ts will le.d to a more.nuance. unde.standing of the.role.of pre.ation risk in be.avioral and e.olutionary e.ology. It also e.phasize. the.ne.d to justify and re.ort the.de.inition of pre.ation risk be.ng use..

关键词： abundance.curre.cy gradie.ts Poe.ilia re.iculata pre.ation risk Trinidad Trinidadian guppy.

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monte.Carlo simulation of lattice.analysis of comple. LaCe.h0.1CuOy using ion bombardme.t te.hnique

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Nucle.r Scie.ce.and Te.hnique. 2020年第3期31卷 20-34页

作者： m.e.e.e.e.e De.artme.t of Physics Covenant University Canaanland De.artme.t of me.hanical e.gine.ring Scie.ce University of Johannesburg

Ion bombardme.t analysis of pe.ovskite.mate.ials is challe.ging owing to the.r pe.uliar *** shortcoming re.de.s the.re.iability on the.te.hnique.some.hat *** this re.e.rch,thre. structure. modifications(i.e.,scan angle.low e.e.gy,and large.ion bombardme.t)we.e.adopte. to improve.the.ion bombardme.t analysis of 99,999 ions using monte.Carlo *** modifie. te.hnique.was use. to analyze.the.e.fe.ts of a che.ically pre.surize.‘‘A’’site.in the.pe.ovskite.lattice.*** LaCe.h0.1Cu2Oy compound was use. in this *** the.low probing e.e.gy,it was obse.ve. that the.high numbe. of ions bombarding the.mate.ial re.ulte. in e.te.nal pre.sure.on the.lattice.structure.of the.***,the.che.ically pre.surize.‘‘A’’site.pe.ovskite.mate.ial was characte.ize. by lattice.mismatch,lattice.fluctuations,grain boundary collapse.and oxyge. *** nove. discove.y of this re.e.rch is the.inte.-and intra-e.te.de. lattice.mismatche. that are.like.y to ***,furthe. inve.tigation of the.conne.tion be.we.n inte.-and intrae.te.de. lattice.mismatche. is re.omme.de. as the. may e.able.fabrication of room-te.pe.ature.supe.conductors.

关键词： Lattice.mismatch Ion bombardme.t Che.ical pre.sure Scan angle

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An e.ficie.t multi-Scale.mode.ling Approach for ssDNA motion in Fluid Flow

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Journal of Bionic e.gine.ring 2008年第4期5卷 299-307页

作者： m. Be.ke.e. Shapiro D. Drikakis Fluid me.hanics and Computational Scie.ce.Group Department of Aerospace Sciences Cranfield University

The.pape. pre.e.ts a multi-scale.mode.ling approach for simulating macromole.ule. in fluid flows. macromole.ule.transport at low numbe. de.sitie. is fre.ue.tly e.counte.e. in biome.ical de.ice., such as se.arators, de.e.tion and analysis syste.s. Accurate.mode.ling of this proce.s is challe.ging due.to the.wide.range.of physical scale. involve.. The.continuum approach is not valid for low solute.conce.trations, but the.large.time.cale. of the.fluid flow make.pure.y mole.ular simulations prohibitive.y e.pe.sive. A promising multi-scale.mode.ling strate.y is provide. by the.me.a-mode.ling approach conside.e. in this pape.. me.a-mode.s are.base. on the.couple. solution of fluid flow e.uations and e.uations of motion for a simplifie. me.hanical mode. of macromole.ule.. The.approach e.able. simulation of individual macromole.ule. at macroscopic time.scale.. me.a-mode.s ofte. re.y on particle.corre.tor algorithms, which impose.le.gth constraints on the.me.hanical mode.. Lack of robustne.s of the.particle.corre.tor algorithm e.ploye. can le.d to slow conve.ge.ce.and nume.ical instability. A ne. FAst Line.r COrre.tor （FALCO） algorithm is introduce. in this pape., which significantly improve. computational e.ficie.cy in comparison with the.wide.y use. SHAKe.algorithm. Validation of the.ne. particle.corre.tor against a simple.analytic solution is pe.forme. and improve. conve.ge.ce.is de.onstrate. for ssDNA motion in a lid-drive. micro-cavity.

关键词： multi-scale.mode.ling DNA macromole.ule.transport me.a-mode.ling particle.corre.tor

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Hot e.trusion Proce.s e.fe.t on me.hanical Be.avior of Stir Cast Al Base. Composite. Re.nforce. with me.hanically mille. B_4C Nanoparticle.

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Journal of mate.ials Scie.ce.& Te.hnology 2011年第12期27卷 1113-1119页

作者： A. Alizade. e. Tahe.i-Nassaj m. Hajizamani De.artme.t of mate.ials Scie.ce.and e.gine.ring Tarbiat Modares University Faculty of mate.ials and manufacturing Proce.se. MUT University

In this study, aluminum alloy （Al-2 wt% Cu） matrix composite. re.nforce. with I, 2 and 4 wt% boron carbide.nanoparticle. fabricate. through me.hanical milling with ave.age.size.of 100 nm we.e.fabricate. via stir casting me.hod at 850℃. Cast ingots of the.matrix alloy and the.composite. we.e.e.trude. at 500℃ at an e.trusion ratio of 10：1 to inve.tigate.the.e.fe.ts of hot e.trusion on the.me.hanical prope.tie. of the.composite.. The.microstructure. of the.as-cast and the.e.trude. composite. we.e.inve.tigate. by scanning e.e.tron microscopy （Se.）. De.sity me.sure.e.t, hardne.s and te.sile.te.ts we.e.carrie. out to ide.tify the.me.hanical prope.tie. of the.composite.. The.e.trude. sample. re.e.le. a more.uniform distribution of B4C nanoparticle.. Also, the.e.trude. sample. had stre.gth and ductility value. supe.ior to those.of the.as-cast counte.parts. In the.as-cast and the.e.trude. sample., with incre.sing amount of B4C nanoparticle., yie.d stre.gth and te.sile.stre.gth incre.se. but e.ongation to fracture.de.re.se..

关键词： Stir casting Hot e.trusion Al matrix composite B4C nanoparticle. me.hanicalmilling

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Pe.tide. radiolabe.e. with Re.186/188 and Tc-99m as pote.tial diagnostic and the.ape.tic age.ts

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Nucle.r Scie.ce.and Te.hnique. 2007年第2期18卷 88-100页

作者： e. GARCíA-GARAYOA R. SCHIBLI P.A. SCHUBIGe. Ce.te. for Radiopharmace.tical Scie.ce.of the.e.H Zurich-Paul Sche.re. Institut-Unive.sity Hospital Zurich CH-5232 Villigen PSI Switzerland Ce.te. for Radiopharmace.tical Scie.ce.of the.e.H Zurich-Paul Sche.re. Institut-Unive.sity Hospital Zurich CH-5232 Villigen PSI Switzerland Department of Chemistry and Applied Biosciences ETH Zurich 8093 Zurich Switzerland

Small pe.tide.base. compounds have.attracte. an e.ormous inte.e.t as carrie. mole.ule. to se.e.tive.y de. live. radionuclide. to targe. tissue., sparing critical normal organs. Whe. looking for "matche. pairs" of radionuclide., suitable.for radiolabe.ing of pe.tide. for diagnosis and the.apy, te.hne.ium and rhe.ium re.re.e.t an almost ide.l conste.lation. The.important role.of te.hne.ium-99m and Re.186/188 is base. on the.de.ay characte.istics, suitable.for tumor diagnosis and the.apy. Tc-99m and Re.188 are.re.dily available.by e.the. a 99mo/99mTc or the.188W/188Re.ra- dionuclide.ge.e.ator syste.. Furthe.more. te.hne.ium and rhe.ium are.che.ically re.ate. and share.structural as we.l as re.ctive.similaritie., which prompt an attractive."matche.-pair" situation. This article.shows an ove.vie. of 99mTc- and 186/188Re.radiolabe.e. pe.tide. that have.be.n te.te. for the.r pote.tial use.as imaging and the.ape.tic age.ts in oncological dise.se..

关键词：放射性同位素标记肽类铼186/188 锝99m 诊断药物治疗药物

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