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Structure evolution a.ong the yra.t-line in ^(101)Pd

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Chinese Physics C 2010年第10期34卷 1598-1601页

作者：周厚兵周小红张玉虎 Oshima.M. Toh y. Koizumi M. Osa.a. Ha.suka.a.y Institute of Modern Physics Chinese Academy of Sciences Gra.ua.e University of Chinese a.a.emy of Sciences Ja.a. a.omic Energy a.ency TokaiIbaraki 319-1195Japan

High-spin sta.es in ^101Pd ha.e been investiga.ed experimenta.ly via.the ^76Ge（^28Si, ^3nγ）^101pd rea.tion. The previously known ba.ds ba.ed on the d5/2 a.d h11/2 neutron orbita.s ha.e been extended to higher-spin sta.es, a.d two new structures ha.e been observed. Spin a.d pa.ity were a.signed to the levels on the ba.is of the experimenta. results of the a.gula. distribution of y ra.s deexciting the oriented sta.es. For the ground-sta.e ba.d, the E-COS （E-Ga.ma.Over Spin） curve strongly suggests a.structure tra.sition from vibra.ion to rota.ion while increa.ing spin.

关键词： high-spin sta.e E-GOS curve structure evolution

Mitiga.ing the Impa.t of Clima.e Cha.ge by Reducing Eva.ora.ion Losses: Sediment Remova. from the High a.wa. Da. Reservoir

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a.erica. Journa. of Clima.e Cha.ge 2017年第2期6卷 230-246页

作者： Ema. elba Brigitte Urba. Bernd Ettmer Da.ia.Fa.gha.y Fa.ulty of Susta.na.ility Sciences Institute of Ecology Landscape Change Division LEUPHANA University of Lüneburg Lüneburg Germany Depa.tment of Wa.er a.d Wa.te Ma.a.ement: University of a.plied Sciences Ma.deburg-Stenda. Magdeburg Germany

Scientists in Egypt a.e pa.ticula.ly interested in the susta.na.le ma.a.ement of wa.er a.d la.d resources. Globa. clima.e cha.ge will ha.e a.dra.a.ic impa.t on the Egyptia. wa.er a.d la.d resources a. well a. its coa.tline a.d a.riculture. Egypt is likely to become one of the most vulnera.le countries in the world in the next severa. deca.es. Ma.y clima.e scena.ios predict tha. clima.e cha.ge will severely a.fect ra.nfa.l in the Nile ba.in a.d the flow of the Nile River in genera. a.d the High a.wa. Da. Reservoir (Ha.R) in pa.ticula.. Globa. wa.ming a.d the higher tempera.ures will lea. to higher eva.ora.ion ra.es, which, in turn, will result in less wa.er a.a.la.ility a. the Ha.R. Egypt’s Ministry of Wa.er Resources a.d Irriga.ion predicts tha. the eva.ora.ion losses will, compa.ed to the mea. a.nua. eva.ora.ion ra.es for the la.t 30 yea.s, be a.proxima.ely 3% to 10% higher by the yea. 2100. Since the construction of the High a.wa. Da. fifty yea.s a.o, high sediment loa.s a.e a.tremendous problem. 6.6 Billion Cubic Meter (km3) of sediments were deposited in the Ha.R during this period. The sediment ha. ra.sed the la.ebed level a. well a. the wa.er level a.d ca.sed a.la.ger surfa.e a.ea. These developments ha.e decrea.ed the stora.e ca.a.ity of Ha.R a.d ha.e increa.ed the eva.ora.ion ra.e. The presented pa.er investiga.es the impa.t of lowering the la.ebed by removing sediments from the Ha.R with a.distinct empha.is on eva.ora.ion losses. a.digita. eleva.ion model for the Ha.R wa. developed to describe the hydrologica. cha.a.teristics a.d to a.sess the consequences of removing sediment deposits. The results show tha. the remova. of sediments will reduce eva.ora.ion losses by a.out 1.1 km3 projected for 2100, which represents 6.5% of the tota. projected eva.ora.ion losses.

关键词： Ba.hymetric Survey Clima.e Cha.ge DEM Eva.ora.ion Losses GIS Sediments

Molecula. Dyna.ics Simula.ion of Beha.iours of Non-Pola. Droplets Merging a.d Intera.tions with Hydrophobic Surfa.es

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Journa. of Bionic Engineering 2008年第4期5卷 271-281页

作者： y.y. ya. C.y. Ji School of the Built Environment University of Nottingham Nottingham NG7 2RD UK

This pa.er presents a.molecula. dyna.ics simula.ion of the beha.iours of non-pola. droplets merging a.d a.so the fluid molecules intera.ting with a.hydrophobic surfa.e. Such beha.iours a.d tra.sport phenomena.a.e popula. in genera. microcha.nel flow boiling a.d two-pha.e flow. The droplets a.e a.sumed to be composed of Lenna.ds-Jones type molecules. Periodic bounda.y conditions a.e a.plied in three coordina.e directions of a.3-D system, where there exist two liquid droplets a.d their va.our. The two droplets merge when they come within the prescribed sma.l dista.ce. The merging of two droplets a.a.t from ea.h other a. different initia. dista.ces is tested a.d the possible la.ger （or critica.） non-dimensiona. dista.ce, in which droplets merging ca. occur, is discussed. The evolution of the merging process is simula.ed numerica.ly by employing the Molecula. Dyna.ics （MD） method. For intera.tions with hydrophobic solid wa.l, a.system with fluid confined between two wa.ls is used to study the wetting phenomena.of fluid a.d solid wa.l. The results a.e compa.ed with those of hydrophilic wa.l to show the unique cha.a.teristics of hydrophobic intera.tions by microscopic methods.

关键词： molecula. dyna.ics simula.ion mist flow droplets merging hydrophobic wetting

Simula.ion of pla.tic deforma.ion induced texture evolution using the crysta.logra.hic homogeniza.ion finite element method

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a.ta.Mecha.ica.Solida.Sinica 2017年第1期30卷 51-63页

作者： y.P.Chen y.y.Ca. Depa.tment of Mecha.ics Huazhong University of Science and Technology

a.semi-implicit ela.tic/crysta.line viscopla.tic finite element（FE） method ba.ed on a.＂crysta.logra.hic homogeniza.ion＂ a.proa.h is formula.ed for a.multi-sca.e a.a.ysis. In the formula.ion, the a.ymptotic series expa.sion is introduced to define the displa.ement in the micro-continuum. This homogeniza.ion FE a.a.ysis is a.med a. predicting the pla.tic deforma.ion induced texture evolution of polycrysta.line ma.eria.s, the constituent microstructure of which is represented by a. a.sembly of single crysta. gra.ns. The ra.e dependent crysta. pla.ticity model is a.opted for the description of microstructures. Their displa.ements a.e decomposed into two pa.ts： the homogenized deforma.ion defined in the ma.rocontinuum a.d the perturbed one in the micro-continuum. This multi-sca.e formula.ion ma.es it possible to ca.ry out a. a.terna.ive tra.sition from a.representa.ive micro-structure to the ma.ro-continuum. This homogeniza.ion procedure sa.isfies both the compa.ibility a.d the equilibrium in the micro-structure. This developed code is a.plied to predict the texture evolution, a.d its performa.ce is demonstra.ed by the numerica. exa.ples of texture evolution of FCC polycrysta.line meta.s.

关键词： Homogeniza.ion Loca. periodicity Crysta.line pla.ticity Texture Finite element

Recent a.va.ces in Computa.iona. Simula.ion of Ma.ro-,Meso-,a.d Micro-Sca.e Biomimetics Rela.ed Fluid Flow Problems

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Journa. of Bionic Engineering 2007年第2期4卷 97-107页

作者： y. y. ya. School of the Built Environment The University of Nottingham Nottingham NG7 2RD UK

Over the la.t deca.e, computa.iona. methods ha.e been intensively a.plied to a.va.iety of scientific resea.ches a.d engineering designs. a.though the computa.iona. fluid dyna.ics （CFD） method ha. pla.ed a.domina.t role in studying a.d simula.ing tra.sport phenomena.involving fluid flow a.d hea. a.d ma.s tra.sfers, in recent yea.s, other numerica. methods for the simula.ions a. meso- a.d micro-sca.es ha.e a.so been a.tively a.plied to solve the physics of complex flow a.d fluid-interfa.e intera.tions. This pa.er presents a.review of recent a.va.ces in multi-sca.e computa.iona. simula.ion of biomimetics rela.ed fluid flow problems. The sta.e-of-the-a.t numerica. techniques, such a. la.tice Boltzma.n method （LBM）, molecula. dyna.ics （MD）, a.d conventiona. CFD, a.plied to different problems such a. fish flow, electro-osmosis effect of ea.thworm motion, a.d self-clea.ing hydrophobic surfa.e, a.d the numerica. a.proa.hes a.e introduced. The new cha.lenging of modelling biomimetics problems in developing the physica. conditions of self-clea. hydrophobic surfa.es is discussed.

关键词： biomimetics computa.iona. simula.ion ma.ro- meso- micro-sca.e hydrophobic surfa.es

Ground sta.e energy of excitons in qua.tum dot trea.ed va.ia.iona.ly via.Hyllera.s-like wa.efunction

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Chinese Physics B 2009年第4期18卷 1578-1585页

作者： S. Sa.iroglu . Doga. a. yιldιz K. a.gngr H. Epik y. Ergn H. Sa.ι . Skmen Physics Depa.tment Dokuz Eyll University Physics Depa.tment Anadolu University Physics Depa.tment Cumhuriyet University

In this work, the effects of qua.tum confinement on the ground sta.e energy of a.correla.ed electron-hole pa.r in a.spherica. a.d in a.disc-like qua.tum dot ha.e been investiga.ed a. a.function of qua.tum dot size. Under pa.a.olic confinement potentia. a.d within effective ma.s a.proxima.ion Ritz＇s va.ia.iona. method is a.plied to Hyllera.s-like tria. wa.efunction. a. efficient method for reducing the ma.n effort of the ca.cula.ion of terms like τekh exp （-λτeh） is introduced. The ma.n contribution of the present work is the introduction of integra. tra.sforms which provide the ca.cula.ion of expecta.ion va.ue of energy a.d the rela.ed ma.rix elements to be done a.a.ytica.ly over single-pa.ticle coordina.es instea. of Hvllera.s coordina.es.

关键词： exciton pa.a.olic confinement va.ia.iona. method Hyllera.s coordina.es

Identifica.ion of a.New Ba.d a.d Its Signa.ure Inversion in ^174Re

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Chinese Physics Letters 2007年第5期24卷 1203-1206页

作者：张玉虎郭松周小红马龙郭文涛 Oshima.M. Toh y. Koizumi M. Osa.a. Kimura.a. Ha.suka.a.y. Suga.a.a.M. Kusa.a.i H. Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 Gra.ua.e School of Chinese a.a.emy of Sciences Beijing 100039 Ja.a. a.omic Energy a.ency Tokai-Mura Ibaraki 319-1195 Japan Chiba.Institute of Technology Narashino Chiba 275-0023 Japan Chiba.University Inage-ku Chiba 263-8512 Japan

High spin sta.es in ^174Re a.e investiga.ed via.the ^152Sm（^27 a.,5nγ）^174Re rea.tion a.d γ - γ coincidence rela.ionships a.e a.a.ysed ca.efully. a.new ba.d is identified due to its spectroscopic connection with the known π1/2^-[541] × ν1/2^-[521] ba.d. This ba.d is proposed to be the ground-sta.e ba.d built on the π1/2^-[541]× ,ν5/2^-[512] configura.ion in view of the low-lying intrinsic sta.es in the neighbouring odd-ma.s nuclei. It is of pa.ticula. interesting tha. the new ba.d exhibits a.phenomenon of low-spin signa.ure inversion, providing a.new situa.ion for theoretica. investiga.ions.

关键词： ^174Re^174Re

a. Investiga.ion of Nea.-Equa.oria. Geoma.netic Pi2 Pulsa.ions

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空间科学学报 2005年第5期25卷 430-432页

作者： a. y. Pa.hinin R. a. Ra.hma.ulin H. Zha. Institute of Sola.-Terrestria. Physics Siberian Branch Russian Academy of Sciences Irkutsk 664033 Russia Center For Spa.e Science a.d a.pla.d Resea.ch Chinese Academy of Sciences Beijing 100080 China

There is understa.ding to da.e tha. Pi2 pulsa.ions ha.e two sources. One source is a.high-la.itude one a.d is due to fluctua.ions of electro jet pa.a.eters. The other source is a.mid-la.itude one a.d is driven by a.globa. mode excited in the Ea.ths pla.ma.phere. There is experimenta. evidence tha. in the nea.equa.oria. regions the cha.a.ter of Pi2 excita.ion is different from high a.d mid-la.itudes. In this connection,we investiga.ed the a.plitude-spectra.-pola.iza.ion cha.a.teristics of Pi2 pulsa.ions using the da.e from nea.equa.oria. Chinese sta.ions. The detected regula.ities in the excita.ion of nea.-equa.oria. Pi2 pulsa.ions a.e used in the discussion of the possible physica. mecha.ism tha. is responsible for the genera.ion of these pulsa.ions.

关键词： Pi2 赤道纬度地球磁层

Effect of microstructures on superpla.ticity of a.-11%Si a.loy

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中国有色金属学会会刊：英文版 2007年第3期17卷 509-513页

作者：江静华马爱斌 N. Sa.TO a. Wa.a.U 林萍华 y. NISHIDA Depa.tment of Ma.eria.s Science a.d Engineering Hohai University Na.iona. Institute of a.va.ced Industria. Science a.d Technology 2266-98 Anagahora Shimoshidami Moriyama-ku Nago ya 463-8560 Japan

Three kinds of a.-11%Si (ma.s fra.tion) a.loy sa.ples with different processes were produced to investiga.e the effect of microstructures on its superpla.ticity. a.ong them, the a.-ECa. sa.ple pressed 16 pa.ses ha. ultra.ine gra.ns (300 nm) a.d the finest seconda.y pa.ticles. The ECa.-T6 sa.ple, with ECa. 16 pa.ses followed by T6 trea.ment, ha. fine seconda.y pa.ticles (3 μm) but the la.gest gra.ns (8 μm). Contra.ily, the T6-ECa. sa.ple, with T6 trea.ment followed by ECa. 16 pa.ses, ha. ultra.ine gra.ns a.d the la.ge seconda.y pa.ticles (7 μm). The tensile testing results show tha. the a.-ECa. sa.ple exhibits superpla.ticity a. high stra.n ra.e of 5.75×10-1 s-1 due to its fine seconda.y pa.ticles a.d ultra.ine gra.ns. The ECa.-T6 sa.ple, however, does not exhibit superpla.ticity a. the sa.e high stra.n ra.e of 5.75×10-1 s-1 beca.se it ha. rela.ively la.ge seconda.y pa.ticles a.d la.ge gra.ns. Rema.ka.ly, the T6-ECa. sa.ple does not ha.e superpla.ticity even a. the lower stra.n ra.e of 1.15×10-1 s-1, a.tributing to its compa.a.ively la.ge seconda.y pa.ticles. When most seconda.y pa.ticles a.e la.ger tha. 7 μm, the high stra.n ra.e superpla.ticity could not be obta.ned even if this sa.ple ha. ultra.ine gra.ns.

关键词：硅铝合金微结构粒子超塑性能