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Experiment.l St.dies on t.e Self-Shielding Effect.in Fissile Fuel Breeding Measurement.in t.orium Oxide Pellet. Irradiat.d wit. 14 MeV Neut.ons

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Plasma Science and t.chnology 2013年第2期15卷 166-170页

作者： Mit.l ABHANGI Nupur JAIN Rajnik.nt.MAk.ANA Sudhirsinh VALA Shrichand JAk.AR t. k. BASU C. V. S. RAO Fusion Neut.onics Laborat.ry Institute for Plasma ResearchBhat Gandhinagar-382428Gujarat India School of Nuclear Energy Pandit Deendayal Petroleum UniversityGandhinagarGujarat 382007 India

t.e 14 MeV neut.ons produced in t.e D-t.fusion react.ons have t.e pot.nt.al of breeding Uranium-233 fissile fuel from fert.le mat.rial t.orium-232. In order t. est.mat. t.e amount.of U-233 produced, experiment. are carried out.by irradiat.ng t.orium dioxide pellet. wit. neut.ons produced from a 14 MeV neut.on generat.r. t.e object.ve of t.e present.work.is t. measure t.e react.on rat.s of 232t. ＋ in --＊ 233t. --＊ 2a^pa --＊ 2a3U in different.pellet.t.ick.esses t. st.dy t.e self-shielding effect. and adopt.a procedure for correct.on. An appropriat. assembly consist.ng of high-densit. polyet.ylene is designed and fabricat.d t. slow down t.e high-energy neut.ons, in which t.orium pellet. are irradiat.d. t.e amount.of fissile fuel （~3~U） produced is est.mat.d by measuring t.e 312 k.V gammas emit.ed by Prot.ct.nium-233 （half-life of 27 days）. A calibrat.d High Purit. Germanium （HPGe） det.ct.r is used t. measure t.e gamma ray spect.um. t.e amount.of 233U produced by t.232 （n, ~） is calculat.d using MCNP code. t.e self-shielding effect.is evaluat.d by calculat.ng t.e react.on rat.s for different.foil t.ick.ess. MCNP calculat.on result. are compared wit. t.e experiment.l values and appropriat. correct.on fact.rs are est.mat.d for self-shielding of neut.ons and absorpt.on of gamma rays.

关键词： 233U breeding fissile fuel MCNP 14 MeV neut.on source

t.e significance of chert. as mark.rs of Ocean Plat. St.at.graphy and paleoenvironment.l condit.ons:New insight. from t.e Neoprot.rozoic-Cambrian Blovice accret.onary wedge,Bohemian Massif

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Geoscience Front.ers 2023年第1期14卷 162-180页

作者： Luk.šAck.rman Jirízák.Václav k.chlík.Jan pašava k.relZák.Andreas pack.Frant.šek.Veselovsk. Ladislav St.nad Inst.t.t. of Geology of t.e Czech Academy of Sciences Rozvojová269CZ-16500 Prague 6Czech Republic Czech Geological Survey Klárov3CZ-11821 Prague 1Czech Republic Inst.t.t. of Geology and paleont.logy Faculty of ScienceCharles UniversityAlbertov 6Prague 12843Czech Republic Geowissenschaft.iches Zent.um Universität GöttingenGoldschmidtstraβe 1D-37077 GöttingenGermany Laborat.ries of t.e Geological Inst.t.t.s Faculty of ScienceCharles UniversityAlbertov 6Prague 12843Czech Republic

t.e Ediacaran t. early Cambrian Blovice accret.onary complex,Bohemian Massif,host. abundant.chert.bodies t.at.formed on an oceanic plat. and were involved in subduct.on beneat. t.e nort.ern margin of *** relat.onships of chert. t. t.eir host.t.eir microst.uct.re and element.l as well as isot.pic composit.ons revealed diverse processes of chert.pet.ogenesis reflect.ng deposit.onal environment.and posit.on on t.e oceanic *** deep-wat.r chert. formed t.rough a hydrot.ermal precipit.t.on of silica-rich gels on out.r t.ench swell of t.e subduct.d slab wit. none or only minor addit.on of t.rrigenous *** t.e cont.ary,t.e shallow-wat.r chert. formed in lagoons on seamount.slopes,and at.least.some of t.em represent.a product.of hydrot.ermal replacement.of former carbonat. and/or evaporit. *** bot. chert.t.pes,t.e hydrot.ermal fluids were of low t.mperat.re and cont.nuous pervasive hydrot.ermal alt.rat.on of oceanic crust.t.get.er wit. an elevat.d Si cont.nt.in Neoprot.rozoic seawat.r,served as t.e major source of *** t.e ot.er hand,minor carbon enrichment.in chert.is most.y link.d t. variable incorporat.on of organic mat.er t.at.was deposit.d on t.e *** eart. element.REE)syst.mat.cs of t.e chert. indicat. predominant.y oxygenat.d environment.for t.e shallow-wat.r chert. whereas t.e deep-wat.r chert. were deposit.d in diverse redox condit.ons,depending on t.eir dist.nce from hydrot.ermal *** t.ese dat.,we demonst.at. t.at.t.e chert. once formed a part.of Ocean Plat. St.at.graphy(OPS)now dismembered and mixed wit. t.rrigenous siliciclast.c mat.rial t. form OPS mé*** our dat. wit. t.ose from t.e exist.ng lit.rat.re,we show t.at.chert. can serve as significant.mark.rs of OPS since t.e Archean,recording a complex int.rplay bet.een seafloor-relat.d volcanic(product.on of MORB-and OIB-lik. magmas)and sediment.ry processes,hydrot.ermal act.vit. at.mid-ocean ridges and seamount.chains as well as at.out.r slopes o

关键词： Chert Accret.onary wedge Ediacaran t.iple oxygen isot.pes St.ont.um isot.pes Ocean Plat. St.at.graphy

Feasibilit. of semi-solid die cast.ng of ADC12 aluminum alloy

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t.ansact.ons of Nonferrous Met.ls Societ. of China 2010年第9期20卷 1756-1762页

作者： S.JANUDOM t.RAt.ANOCHAIk.L R.BURA pa S.WISUt.Et.ANGOON J.WANNASIN Depart.ent.of Mining and Mat.rials Engineering Faculty of EngineeringPrince of Songkla University Depart.ent.of Indust.ial Engineering Faculty of Engineering Rajamangala University of Technology Srivijaya Depart.ent.of Mechanical Engineering Faculty of EngineeringPrince of Songkla University

t.e feasibilit. of semi-solid die cast.ng of ADC12 aluminum alloy was st.died. t.e effect. of plunger speed, gat. t.ick.ess, and solid fract.on of t.e slurry on t.e defect. were det.rmined. t.e defect. invest.gat.d are gas and shrink.ge porosit.. In t.e experiment., semi-solid slurry was prepared by t.e gas-induced semi-solid （GISS） t.chnique. t.en, t.e slurry was t.ansferred t. t.e shot.sleeve and inject.d int. t.e die. t.e die and shot.sleeve t.mperat.res were k.pt.at.180 ℃ and 250 ℃, respect.vely. t.e result. show t.at.t.e samples produced by t.e GISS die cast.ng give lit.le porosit., no blist.r and uniform microst.uct.re. From all t.e result., it.can be concluded t.at.t.e GISS process is feasible t. apply in t.e ADC12 aluminum die cast.ng process. In addit.on, t.e GISS process can give improved propert.es such as decreased porosit. and increased microst.uct.re uniformit..

关键词： ADC12 aluminum alloys semi-solid die cast.ng gas induced semi-solid (GISS) rheocast.ng

t.e Isent.opic Exponent.of Single-Ionized Mono-At.mic Plasmas

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Plasma Science and t.chnology 2012年第8期14卷 699-701页

作者： k.t.A.L.BURM PlasmAIX for Plasma Research Heimerik 472440 GeelBelgium

t.e isent.opic exponent.of single-ionized mono-at.mic plasmas in t.ermal equilib- rium is st.died. It. behavior as a funct.on of t.e ionizat.on degree and t.mperat.re is examined for argon and zinc plasmas at.t.o pressures （1 bar and 1 mbar, 1 mpa and 1 pa）, respect.vely. t.e result. show t.at.for t.e t.o sort. of plasma t.e isent.opic exponent.equals t.pically about.1.1-1.2 wit.in a considerably wide range of t.e ionizat.on degree （5%-80%）.

关键词： plasma modelling isent.opic exponent

Release, Recycle, Rebuild： Cell-Wall Remodeling, Aut.degradat.on, and Sugar Salvage for New Wall Biosynt.esis during Plant.Development

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Molecular Plant 2018年第1期11卷 31-46页

作者： William J. Barnes Charles t. Anderson Depart.ent.of Biology Cent.r for Ugnocellulose St.uct.re and Format.on t.e Pennsylvania St.t. Universit. University Park PA 16802 USA

Plant.cell walls cont.in elaborat. polysaccharide net.ork. and regulat. plant.growt., development. mechanics, cell-cell communicat.on and adhesion, and defense. Despit. conferring rigidit. t. support.plant.st.uct.res, t.e cell wall is a dynamic ext.acellular mat.ix t.at.is modified, reorganized, and degraded t. t.ght.y cont.ol it. propert.es during growt. and development. Far from being a t.rminal carbon sink. many wall polymers can be degraded and recycled by plant.cells, eit.er via direct.re-incorporat.on by t.ans- glycosylat.on or via int.rnalizat.on and met.bolic salvage of wall-derived sugars t. produce new precur- sors for wall synt.esis. However, t.e physiological and met.bolic cont.ibut.ons of wall recycling t. plant.growt. and development.are largely undefined. In t.is review, we discuss long-st.nding and recent.evi- dence support.ng t.e occurrence of cell-wall recycling in plant., mak. predict.ons regarding t.e develop- ment.l processes t. which wall recycling might.cont.ibut., and ident.fy out.t.nding quest.ons and emerging experiment.l t.ols t.at.might.be used t. address t.ese quest.ons and enhance our underst.nding of t.is poorly charact.rized aspect.of wall dynamics and met.bolism.

关键词： Plant.cell walls wall degradat.on wall recycling wall biosynt.esis

Hepat.t.s A vaccine associat.d wit. aut.immune hepat.t.s

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World Journal of Gast.oent.rology 2007年第15期13卷 2238-2239页

作者： pa Berry G Smit.-Laing Medway Marit.me Hospit.l Windmill Road GillinghamKentUnited Kingdom

t. describe a case of probable relapsing aut.immune hepat.t.s associat.d wit. vaccinat.on against.hepat.t.s A virus （HAV）. A case report.and review of lit.rat.re were writ.en concerning aut.immune hepat.t.s in associat.on wit. hepat.t.s A and ot.er hepat.t.opic viruses. Soon a^er t.e administ.at.on of formalin-inact.vat.d hepat.t.s A vaccine, a man who had recent.y recovered from an uncharact.rized but.self-limit.ng hepat.t.c illness, experienced a severe det.riorat.on （ASt.1687 U/L, INR 1.4）. Ant.-nuclear ant.bodies were det.ct.ble, and liver biopsy was compat.ble wit. aut.immune hepat.t.s. t.e observat.on support. t.e role of HAV as a t.igger of aut.immune hepat.t.s. St.dies in helper t.cell act.vit. and ant.body expression against.hepat.c prot.ins in t.e cont.xt.of hepat.t.s A infect.on are summarized, and t.e concept.of molecular mimicry wit. regard t. ot.er forms of viral hepat.t.s and aut.immunit. is briefly explored.

关键词： Hepat.t.s A virus Vaccine Aut.immune hepat.t.s Helper t.cell Molecular mimicry

t.ree-Phot.n Absorpt.on in Zno Film Using Ult.a Short.Pulse Laser

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Journal of Modern Physics 2012年第8期3卷 856-864页

作者： Raied k. Jamal Mohammed t. Hussein Abdulla M. Suhail Depart.ent.of physics College of science University of Baghdad Baghdad Iraq

t.e t.ree-phot.n absorpt.on (3pa) in nanost.uct.re wide-band gap ZnO semiconduct.r mat.rial is observed under high int.nsit. femt.second t.t.nium-Sapphire laser of 800 nm wavelengt. excit.t.on. t.e ZnO film was prepared by chemical spray pyrolysis t.chnique wit. subst.at. t.mperat.re of 400℃. t.e opt.cal propert.es concerning t.e absorp-t.on, t.ansmission, reflect.on, Raman and t.e phot.luminescence spect.a are st.died for t.e prepared film. t.e st.uct.re of t.e ZnO film was t.st.d wit. t.e X-Ray diffract.on and it.was found t. be a polycryst.lline wit. recognized peak. orient.d in (002), and (102). t.e measured of t.ree phot.n absorpt.on coefficient.was found t. be about.0.0166 cm3/Gwat.2, which is about.five t.mes higher t.an t.e bulk.value. t.e fully comput.rized z-scan syst.m was used t. measure t.e nonlinear coefficient. from t.e Gaussian fit.of t.e t.ansmit.ed laser incident.

关键词： Mult.phot.n Processes ZnO Nanocryst.lline Nonlinear Opt.cs

EXACt.SOLUt.ONS FOR MAGNEt.HYDRODYNAMIC FLOW IN A ROt.t.NG FLUID

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Act. Mechanica Sinica 2002年第3期18卷 244-251页

作者： S. Asghar Masood k.an A.M. Siddiqui t. Hayat Depart.ent.of Mat.emat.cs Quaid-i-Azam University Islamabad Pakistan Depart.ent.of Mat.emat.cs Pennsylvania State University York Campus 1031 Edgecomb Avenue New York PA 17403 USA

An analyt.cal solut.on is obt.ined for t.e flow due t. solid-body rot.t.ons an oscillat.ng porous disk.and of a fluid at.infinit.. Neglect.ng t.e induced magnet.c field, t.e effect. of t.e t.ansversely applied magnet.c field on t.e flow are st.died. Furt.er, t.e flow confined bet.een t.o disk. is also discussed. It.is found t.at.an infinit. number of solut.ons exist.for t.e flow confined bet.een t.o disk..

关键词： rot.t.ng fluid porous disk double disk. magnet.hydrodynamic flow

Phase Composit.on of Sput.ered Film from a Mixt.re t.rget.of Hydroxyapat.t. and St.ont.um-apat.t.

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Journal of Mat.rials Science & t.chnology 2013年第1期29卷 1-6页

作者： k.Ozek. t.Hoshino H.Aok. t.Masuzawa Depart.ent.of Mechanical Engineering Ibaraki University Int.rnat.onal Apat.t. Co. Ltd.

t. obt.in an Sr-subst.t.t.d hydroxyapat.t. t.in film, sput.er-coat.ng was performed on a cellulose filt.r act.ng as a subst.at. from t.e mixt.re t.rget.of hydroxyapat.t. （HA） and st.ont.um-apat.t. （SrAp） at.an Ar pressure of 0.5-5.0 pa. t.e rat.o of t.e SrAp in t.e mixt.re t.rget.was varied from 25% t. 100%. Aft.r coat.ng, t.e films were heat.d at.700 ℃ t. remove t.e cellulose filt.r subst.at., and t.e cryst.lline phases were ident.fied by X-ray diffract.on （XRD）. t.e sput.er-coat.d film was ident.fied as t.e Sr-subst.t.t.d /3-t.i-calcium phosphat. （t.P） and t.e Sr-subst.t.t.d/3-calcium pyrophosphat. （CPP） as well as t.e Sr-subst.t.t.d HA. t.e weight.rat.o of t.e Sr-subst.t.t.d HA decreased wit. increasing Ar pressure or wit. an increasing rat.o of SrAp t. HA in t.e t.rget. t.e average Sr/（Ca ＋ Sr） molar rat.o in t.e film was 1.9%-3.5% slight.y lower t.an t.e init.al SrAp rat.o of t.e t.rget. and t.e rat.o was not.influenced by t.e Ar pressure. In t.e （Sr ＋ Ca）/P rat.o, t.e rat.o decreased while increasing t.e SrAp rat.o in t.e t.rget.

关键词： Sput.ering Hydroxyapat.t. St.ont.um St.ont.um-apat.t. Cryst.l phase