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Switch.ble h.droph.bic-h.droph.lic la.er obta.ned onto porous a.umina.by pla.ma.enh.nced fluorina.ion

Science Ch.na.Tech.ologica. Sciences) 2009年第1期52卷 104-110页

作者： a. TreSSa.D C. La.RUGère E. DURa.D C. BRIGOULEIX h. a.DRIESSEN Institute of Condensed Ma.ter Ch.mistry of Bordea.x (ICMCB-CNRS) University Bordeaux 1 87 Avenue du Dr. A. Schweitzer a.Fa.GEVa.RT NV Septestraat 27

Conventiona. lith.gra.h.c printing processes using porous a.umina.for offset a.plica.ions genera.ly use "wet" routes. recently "dry" processes h.ve been developed wh.ch.a.e ba.ed on a.h.a.-induced h.droph.lic/oleoph.lic conversion of one or more la.ers of th. coa.ing so th.t a.stronger a.finity to-wa.ds ink or wa.er founta.n is crea.ed a. th. exposed a.ea. with.respect to th. surfa.e of th. unex-posed coa.ing. Trea.ments involving rf pla.ma.enh.nced fluorina.ion (PEF) constitute exceptiona. tools for modifying th. surfa.e properties of ma.eria.s. Ma.y a.va.ta.es of th.se tech.iques ca. be indeed outlined, wh.n compa.ed to more conventiona. meth.ds: room-tempera.ure rea.tions, ch.mica. modi-fica.ions limited to surfa.e only with.ut ch.nging th. bulk properties, possible non-equilibrium rea.-tions. Th. influence of PEF trea.ments on porous a.umina.la.er used in printing pla.es h.s been tested with.va.ious fluorina.ed ga.es (CF4, C3F8 a.d C4F8) a.d ch.ra.terized by XPS. Th. h.droph.bic prop-erties of th. fluorina.ed la.er h.ve been deduced from conta.t a.gle mea.urements. Using C4F8 rf-PEF trea.ment, th. outmost surfa.e of th. h.droph.lic a.umina.substrate used for lith.gra.h.c printing is h.droph.bized, or in oth.r words, th. h.droph.lic substrate is converted into a.support with.h.dro-ph.bic properties. Once being h.droph.bized, th. surfa.e la.er ma. be rendered h.droph.lic using a.h.a. pulse, th.s giving rise to switch.ble h.droph.bic-h.droph.lic properties of th. ma.eria..

关键词： porous a.umina rf-pla.ma fluorina.ion offset a.plica.ions h.droph.bic-h.droph.lic switch.ble la.er XPS conta.t a.gle

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Numerica. Solution of th. a.ymmetric Wa.er Impa.t of a.Wedge in Th.ee Degrees of Freedom

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Ch.na.Ocea. Engineering 2013年第3期27卷 313-322页

作者： h. Gh.ziza.e-a.0}a.e a. h. Nikseresh. Fa.ulty of Mech.nica. & a.rospa.e Engineering Shiraz University of Technology

Impa.t problems a.socia.ed with.wa.er entry h.ve importa.t a.plica.ions in va.ious a.pects of na.a. a.ch.tecture a.d ocea. engineering. Estima.ion of h.drodyna.ic impa.t forces especia.ly during th. first insta.ces a.ter th. impa.t is very importa.t a.d is of interest. Since th. estima.ion of h.drodyna.ic impa.t loa. pla.s a. importa.t role in sa.e design a.d a.so in eva.ua.ion of structura. weigh. a.d costs, it is better to use a.relia.le a.d a.cura.e prediction meth.d instea. of a.simple estima.ion resulted by a.a.yzing meth.ds. In la.ding of flying boa.s, some ph.nomena.such.a. wea.h.r conditions a.d strong winds ca. ca.se a.ymmetric instea. of symmetric descent. In th.s pa.er, a.numerica. simula.ion of th. a.ymmetric impa.t of a.wedge, a. th. step of a.flying boa., considering dyna.ic equa.ions in two-ph.se flow is ta.en into a.count. Th. dyna.ic motion of th. wedge in two-ph.se flow is solved ba.ed on finite volume meth.d with.volume of fluid （VOF） sch.me considering dyna.ic equa.ions. Th.n th. effects of different a.gles of impa.t a.d wa.er depth.on th. velocity ch.nge a.d sla.ming forces in a. a.ymmetric impa.t a.e investiga.ed. Th. compa.ison between th. simula.ion results a.d experimenta. da.a.verifies th. a.cura.y of th. meth.d a.plied in th. present study.

关键词： sla.ming force a.ymmetric impa.t dyna.ic mesh dyna.ic equa.ions fluid dyna.ics

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Experimenta. investiga.ions of th. functiona. morph.logy of dra.onfly wings

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Ch.nese Ph.sics B 2013年第8期22卷 738-745页

作者： h. Ra.a.i a. Da.vizeh Depa.tment of Mech.nica. Engineering Faculty of Engineering The University of GuilanRasht Iran

Nowa.a.s, th. importa.ce of identifying th. fligh. mech.nisms of th. dra.onfly, a. a. inspira.ion for designing fla.ping wing veh.cles, is well known. a. experimenta. a.proa.h.to understa.ding th. complexities of insect wings a. orga.s of fligh. could provide significa.t outcomes for design purposes. In th.s pa.er, a.compreh.nsive investiga.ion is ca.ried out on th. morph.logica. a.d microstructura. fea.ures of dra.onfly wings. Sca.ning electron microscopy （SEM） a.d tensile testing a.e used to experimenta.ly verify th. functiona. roles of different pa.ts of th. wings. a.number of SEM ima.es of th. elements of th. wings, such.a. th. nodus, lea.ing edge, trailing edge, a.d vein sections, wh.ch.pla. domina.t roles in strength.ning th. wh.le structure, a.e presented. Th. results from th. tensile tests indica.e th.t th. nodus migh. be th. critica. region of th. wing th.t is subjected to h.gh.tensile stresses. Considering th. pa.terns of th. longitudina. corruga.ions of th. wings obta.ned in th.s pa.er, it ca. be supposed th.t th.y increa.e th. loa.-bea.ing ca.a.ity, giving th. wings a. a.ility to tolera.e dyna.ic loa.ing conditions. In a.dition, it is suggested th.t th. longitudina. veins, a.ong with.th. lea.ing a.d trailing edges, a.e structura. mech.nisms th.t furth.r improve fa.igue resista.ce by providing h.gh.r fra.ture tough.ess, preventing cra.k propa.a.ion, a.d a.lowing th. wings to susta.n a.significa.t a.ount of da.a.e with.ut loss of strength.

关键词： dra.onfly wings SEM tensile test nodus longitudina. corruga.ion

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regiona.-Sca.e Study on Sediment Processes of Kh.ra. Strait a. Persia. Gulf with.Implica.ions for Engineering Design

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Ch.na.Ocea. Engineering 2019年第3期33卷 356-364页

作者： a. Sh.neh.a.za.eh.h. a.da.a. Fa.ulty of Civil Engineering a.d transporta.ion University of Isfahan Isfahan Iran Wa.er resea.ch.Institute (WRI) Tehran Iran

In th.s a.ticle, th. sediment transport processes in th. Kh.ra. Strait between th. ma.nla.d Ira. a.d Qesh. Isla.d a. North.Central Persia. Gulf a.e studied in regiona. sca.e in a.compreh.nsive ma.ner. Th. objectives of th.s study include defining th. type a.d origin of th. sediment, th. influencing fa.tors, a.d th. domina.t mode of sediment transport. Four possible scena.ios of sediment processes in terms of sediment sources a.d influentia. environmenta. forces a.e exa.ined. Th. results of th. conceptua. a.d 2D numerica. model of MIKE21 a.plied for th.s purposes indica.e th.t th. sediment sources in th. transport processes a.e ma.nly provided by th. sediments suspended from th. central a.d ea.tern zones of th. strait bed. Oth.r sources including input from rivers do not h.ve direct influence on th. processes. Th. results a.e a.plied to th. study of morph.logica. ch.nges for engineering a.plica.ions including th. pa.tern a.d a.ount of deposit in th. Ra.a.e port a.proa.h.ch.nnel a.d h.rbor ba.in. Th. pa.tern a.d a.ount of a.nua. sediment deposits in th. a.proa.h.ch.nnel predicted by th. model is sa.isfa.tory, compa.ible with.a.nua. dredging records.

关键词： sediment transport morph.dyna.ics 2D numerica. model Persia. Gulf Kh.ra. Strait Ra.a.e Port

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Oxida.ive lea.h.ng kinetics of molybdenum-ura.ium ore in h.SO4 using h.O2 a. a. oxidizing a.ent

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Frontiers of Ch.mica. Science a.d Engineering 2013年第1期7卷 95-102页

作者： T. a. La.h.en M. E. EI-a.0}a.y h. B. h.ssib a. S. h.la. Nuclea. Ma.eria.s a.th.rity Cairo Egypt Ch.mistry Depa.tment Faculty of Science Cairo University Giza Egypt

Th. processing of molybdenum-ura.ium ore in a.sulfuric a.id solution using h.drogen peroxide a. a. oxida.t h.s been investiga.ed. Th. lea.h.ng tempera.ure, h.drogen peroxide concentration, sulfuric a.id concentration, lea.h.ng time, pa.ticle size, liquid-to-solid ra.io a.d a.ita.ion speed a.l h.ve significa.t effects on th. process. Th. optimum process opera.ing pa.a.eters were： tempera.ure： 95℃; h.O2 concentration： 0.5 M; sulfuric a.id concentration： 2.5 M; time： 2 h. pa.ticle size： 74 gm, liquid-to-solid ra.io： 14 ： 1 a.d a.ita.ion speed： 600 rpm. Under th.se experimenta. conditions, th. extraction efficiency of molybdenum wa. a.out 98.4%, a.d th. ura.ium extraction efficiency wa. a.out 98.7%. Th. lea.h.ng kinetics of molybdenum sh.wed th.t th. rea.tion ra.e of th. lea.h.ng process is controlled by th. ch.mica. rea.tion a. th. pa.ticle surfa.e. Th. lea.h.ng process follows th. kinetic model 1 - （1-X）1/3 = kt with.a. a.pa.ent a.tiva.ion energy of 40.40 kJ/mole. Th. tempera.ure, concentrations of h.02 a.d h.SO4 a.d th. mesh.size a.e th. ma.n fa.tors th.t influence th. lea.h.ng ra.e. Th. rea.tion order in h.SO4 wa. 1.0012 a.d in h.02 it wa. 1.2544.

关键词： lea.h.ng of molybdenum lea.h.ng of ura.ium kinetics

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Effective Dielectric Properties of a.-ZnS a.d a.-ZnO Pla.monics Na.ocomposites in th. Tera.0}rtz regime

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Ch.nese Ph.sics Letters 2014年第10期31卷 96-99页

作者： a. Zola.va. h. Sa.egh. a. Ra.jga. Depa.tment of Ph.sics Faculty of Science Arak University Arak 8349-8-38156 Iran

Composite ma.eria.s ba.ed on pla.monic na.opa.ticles a.low building meta.a.eria.s with.very la.ge effective permittivity （positive or nega.ive）. Moreover, if clustered or combined with.oth.r na.opa.ticles, it is a.so possible to genera.e effective ma.netic permea.ility （positive or nega.ive）, a.d a. a.-h.c design would result in th. genera.ion of double nega.ive ma.eria.s, a.d th.refore ba.kwa.d wa.e propa.a.ion. In th.s work, th. optica. properties such.a. th. effective permittivity, permea.ility a.d refra.tive index of a.-ZnS a.d a.-ZnO na.ocomposites in a.broa. frequency ra.ge a.e studied. Th. enh.ncement is a.tributed to energy transfer from ZnS or ZnO to a. followed by a.la.ge loca. electroma.netic field on or nea. th. surfa.e of th. a. na.opa.ticles. Loca. surfa.e pla.mon resona.ce could be th. key＂ rea.on for th.s enh.ncement. Th. surfa.e pla.mon, in response to ch.nges in th. refra.tive index of th. loca. environment, a.so depends on th. type of meta. th.ough.th. bulk pla.ma.wa.elength.a.d th. na.o-pa.ticle compositions a.d geometry.

关键词： Effective regime na.opa.ticles

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Tree wa.er potentia.s supporting a. expla.a.ion for th. occurrence of Va.h.llia.erioloba.in th. Na.ib Desert (Na.ibia.

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Forest Ecosystems 2017年第4期4卷 303-312页

作者： Joa.h.m h. a. Krug Institute for Silviculture a.d Forest Ecology Georg-August-University of Gottingen Bosgenweg 1 37077 Gottingen Germany

Ba.kground： Site-vegeta.ion rela.ions of Va.h.llia.erioloba. Fa.dh.rbia.a.bido, Euclea.pseudebenus a.d Ta.a.ix usneoides in two contrasting loca.ions in th. Na.ib Desert （Na.ibia. were eva.ua.ed with.th. goa. to rela.e soil wa.er a.a.la.ility to th. occurrence of trees under h.per-a.id conditions, Meth.ds： Pla.t wa.er potentia.s were mea.ured using a.pressure ch.mber in th. field. Pre-da.n wa.er potentia.s were a.sessed to reflect th. soil wa.er potentia. of th. rh.zosph.re. Midda. wa.er potentia.s were mea.ured to a.sess th. strongest nega.ive wa.er potentia. a.plied by th. sa.ple trees. results： Pre-da.n wa.er potentia.s a.d midda. wa.er potentia.s indica.ed a.cess to soil wa.er in th. rh.zosph.re a.d by th.s, provide a. expla.a.ion for a. occurrence of V. erioloba.with.n th. extreme environmenta. conditions of sa.d dunes in th. Na.ib Desert. Diurna. ra.ges seem to reflect more a.d less suita.le sta.ds, in terms of soil wa.er a.a.la.ility, with.n th. sa.pling sites. Wh.le th. impa.t of th. eph.mera. Kuiseb river on soil wa.er a.a.la.ility wa. a.sessed th.ough.th. four species＇ pla.t-interna. wa.er rela.ions, compa.a.le pre-da.n wa.er potentia.s of V. erioioba.a. both.sites indica.e soil wa.er a.a.la.ility a.so in th. dunes of Na.ibra.d. Th. extreme midda. wa.er potentia.s of th. dune pla.ts possibly sh.w th. upper limit of tolera.ce for V. eriolobo. Conclusions： Th. prelimina.y da.a.provide a. expla.a.ion of th. occurrence a.d distribution of th. investiga.ed species in beds of eph.mera. rivers a.d on dunes under th. h.per-a.id clima.ic conditions of th. Na.ib Desert a.d qua.ify suita.ility with.n th. a.sessed sites. Understa.ding th. pla.t-ph.siologica. processes a.d a.sessing th. pla.t-interna. wa.er potentia. provides a.va.ua.le tool to eva.ua.e soil wa.er a.a.la.ility with.n th. rh.zosph.re a.d to describe a. a.a.ta.ion potentia. of investiga.ed species. Th. compa.a.ility of pre-da.n wa.er potentia.s a. both.sites indica.es unexpected soil wa.er a.a.la.ility w

关键词： Wa.er potentia. a.id la.d Soil wa.er a.a.la.ility Na.ibia V. erioloba

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Specimen a.pect ra.io a.d progressive field strain development of sa.dstone under unia.ia. compression by th.ee-dimensiona. digita. ima.e correla.ion

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Journa. of Rock Mech.nics a.d Geotech.ica. Engineering 2017年第4期9卷 599-610页

作者： h. Munoz a. Ta.0}ri Deep Explora.ion Tech.ologies Coopera.ive resea.ch.Centre (DET CRC) Export Park Adelaide Airport Adelaide SA 5950 Australia Sch.ol of Civil Environmental & Mining Engineering The University of Adelaide Adelaide SA 5005 Australia

Th. complete stress-strain ch.ra.teristics of sa.dstone specimens were investiga.ed in a.series of qua.ista.ic monotonic unia.ia. compression *** pa.terns development during pre-a.d post-pea. beh.viours in specimens with.different a.pect ra.ios wa. a.so *** stress,post-pea. portion of stress-strain,brittleness,ch.ra.teristics of progressive loca.isa.ion a.d field strain pa.terns development were a.fected a. different extents by specimen a.pect *** pa.terns of th. rocks were obta.ned by a.plying th.ee-dimensiona.(3D) digita. ima.e correla.ion(DIC) *** conventiona. strain mea.urement using strain ga.ges a.ta.h.d to specimen,3D DIC a.lowed not only mea.uring la.ge strains,but more importa.tly,ma.ping th. development of field strain th.ough.ut th. compression test,*** pre-a.d post-pea. *** strain development in th. surfa.e of rock specimen suggests th.t strain sta.ts loca.ising progressively a.d develops a. a.lower ra.e in pre-pea. ***,in post-pea. regime,strains increa.e a. different ra.es a. loca. deforma.ions ta.e pla.e a. different extents in th. vicinity a.d outside th. loca.ised *** extent of loca.ised strains togeth.r with.th. ra.e of strain loca.isa.ion is a.socia.ed with.th. increa.e in ra.e of strength.*** loca.isa.ion a.d loca. inela.tic unloa.ing outside th. loca.ised zone both.fea.ure post-pea. regime.

关键词： Unia.ia. compression test a.pect ra.io Strain pa.terns Digita. ima.e correla.ion(DIC)

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Microstructura. Eva.ua.ion of 410 SS/Cu Diffusion-Bonded Joint

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Journa. of Ma.eria.s Science & Tech.ology 2010年第2期26卷 163-169页

作者： h. Sa.etgh.da. a. Za.ei h.nza.i a. a.a.e a. h.dia. Sch.ol of Meta.lurgica. a.d Ma.eria.s Engineering University of Tehran Sch.ol of Mech.nica. Engineering University of Tehran

In th. present study, a.gra.e of sta.nless steel （SS, 410） a.d copper pla.es were joined th.ough.diffusion bonding by using a.nickel interla.er a. tempera.ure ra.ge of 800-950℃. Th.se were performed th.ough.pressing th. specimens under a.pressure of 12 MPa.for 60 min under 1.33×10-2 Pa.（10-4 torr） va.uum. Th. microstructure a.d ph.se constitution nea. th. diffusion bonding interfa.e of Cu/Ni a.d Ni/SS were studied by optica. microscopy （OM）, sca.ning electron microscopy （SEM）, X-ra. diffra.tion （XRD） a.d a. elementa. a.a.yses th.ough.energy dispersive spectrometry （EDS）. Th. results indica.ed th.t a. obvious diffusion zone wa. formed nea. both.Cu/Ni a.d Ni/SS interfa.es during th. va.uum diffusion bonding. Th. th.ckness of rea.tion la.er in both.interfa.es wa. increa.ed with.increa.ing process tempera.ure. Th. diffusion transition region nea. th. Cu/Ni a.d Ni/SS interfa.es consist of complete solid solution zone a.d va.ious ph.ses ba.ed on （Fe, Ni）, （Fe, Cr, Ni） a.d （Fe, Cr）, respectively. From EDS results, th.ee different mixtures of ph.ses were distinguish.d in SS-Ni interfa.e. Th. a.tiva.ion energy a.d ra.e consta.t were determined for th. growth.of th.se rea.tion la.ers a.d th. va.ues become ma.imum for th. （γFe＋Cr＋αFe＋Cr）.ph.se mixture.

关键词： 410 ma.tensitic sta.nless steel Nickel foil Diffusion bonding Solid sta.e rea.tions

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Evolutiona.ily Sta.le Strategies in Qua.tum h.wk-Dove Ga.e

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Ch.nese Ph.sics Letters 2010年第5期27卷 12-15页

作者： a.0}a. Na.a. a. h. Toor Na.iona. Centre for Ph.sics Quaid-i-Azam University Campus Islamabad Pakistan Depa.tment of Ph.sics Quaid-i-Azam University Islamabad 45320 Pakistan

We qua.tize th. h.wk-Dove ga.e by using th. most genera. form of a.pure initia. sta.e to investiga.e th. existence of pure a.d mixed evolutiona.ily sta.le strategies （ESS）. a. exa.ple is considered to dra. a.compa.ison between th. cla.sica. a.d qua.tum version of th. ga.e. Our ch.ice of th. most genera. initia. qua.tum sta.e ena.les us to ma.e th. ga.e symmetric or a.ymmetric. We sh.w th.t for a.pa.ticula. set of ga.e pa.a.eters wh.re th.re exists only mixed ESS in th. cla.sica. version of th. ga.e, qua.tiza.ion a.lows even a.pure strategy to be a. ESS for th. symmetric ga.e in a.dition to mixed ESS. On th. oth.r h.nd only pure strategy ESS ca. exist for th. a.ymmetric qua.tum version of th. h.wk-Dove ga.e.

关键词： Dove ga.e ga.e pure

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