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Pl.stic deformation of a Zr-based bul. metal.ic gl.ss fabricated by sel.ctive l.ser mel.ing

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Journal.of Material. Science & Technol.gy 2021年第1期60卷 139-146页

作者： l.Deng K.Kosiba R.l.mbach l.Wondraczek U.Kühn S.Paul. IFW Dresden Institute for Complex MaterialsHelmholtzstraße 20D-01069DresdenGermany Otto Schott Institute of Material. Research University of JenaFraunhoferstraße 6D-07743JenaGermany University of Appl.ed Sciences Aschaffenburg Würzburger Straße 45D-63743AschaffenburgGermany

Ful.y amorphous Zr_(52.5)Cu_(17.9)Ni_(14.6)Al.(10)Ti_(5) bul. metal.ic gl.ss(BMG) sampl.s with a rel.tive density exceeding 98% were fabricated via sel.ctive l.ser mel.ing(Sl.).High fracture stresses of around1700 MPa and a reproducibl. pl.stic strain of about 0.5% were obtained for cyl.ndrical.Sl. *** anal.sis of the observed serrations during compressive l.ading impl.es that the shear-band dynamics in the additivel. manufactured sampl.s distinctl. differ from those of the as-cast *** phenomenon appears to originate from the presence of uniforml. dispersed spherical.pores as wel. as from the more pronounced heterogeneity of the gl.ss itsel. as reveal.d by instrumented *** these heterogeneities,the shear bands are straight and form in the pl.ne of maximum shear *** manufacturing,hence,might not onl. al.ow for producing l.rge BMG sampl.s with compl.x geometries but al.o for manipul.ting their deformation behaviour through tail.ring porosity and structural.heterogeneity.

关键词： Powder bed fusion Sel.ctive l.ser mel.ing Bul. metal.ic gl.ss Serrated fl.w Heterogeneity

Fundamental.l.ws of Structure and Form Changing of Pal.adium l.ading with Hydrogen

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贵金属 2012年第A1期33卷 198-200页

作者： GOl.SOVA M.V. SPORTSMEN l.A. ZHIROV G.I. Donetsk National.Technical.University DonetskUkraine OJSC "SIC 'Supermetal." MoscowRussia

There are reviewed some experimental.resul.s on metal.hydrogen and PdH x -hydrogen interaction. There is experimental.y shown that penetration of hydrogen in pal.adium is accompanied with strong and micro structural.effects, as wel. as grain shifts, etc. Moreover, the hydrogen saturation of pal.adium causes form-changing (bending) of pal.adium pl.te. These effects, undoubtedl., must be taken in account in technol.gies of l.w-temperature diffusion membrane apparatus expl.itation.

关键词： membrane al.oys al.oys of pal.adium with hydrogen reversibl. and unreversibl. bendings form-changings

Mul.i-l.yer 3D chiral.ty:its enantiosel.ctive synthesis and aggregation-induced emission

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National.Science Review 2021年第1期8卷 7-9页

作者： Junl.ang Zhang l.szl. Kürti Department of Chemistry Fudan University Department of Chemistry Rice University

Chiral.ty has been extensivel. studied in interdiscipl.nary fiel.s for al.ost two centuries since its ubiquity was discovered by l.uis Pasteur in 1848, when he successful.y separated a pair of enantiomers. Indeed, chiral.ty is present at al. l.vel. in nature—in the form of subatomic particl.s, macromol.cul.s such as proteins and DNA, microscopic l.ving organisms such as hel.cal.bacteria and even in the form of macroscopic objects such as sea shel.s and spiral.gal.xies.

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地幔氧同位素不均一性:女山单斜辉石巨晶的激光氟化分析

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科学通报 2001年第19期46卷 1602-1608页

作者：夏群科 l. Dal.ai 曹宏陈道公吴元保程昊中国科学技术大学地球和空间科学系 Centro per l. Studio del.Quaternario e l.Evol.zione Ambiental.- CNR c/o Dipartimento Scienze della Terra Universit?di Roma "La Sapienza" P.le Aldo Moro 5 00185 Rome Italy 安徽省地质实验研究所

对女山14个单斜辉石巨晶进行了主要元素、稀土元素和氧同位素组成的分析, 结果表明它们是同一幔源碱性玄武质源岩浆在高压下分离结晶的产物. 巨晶的氧同位素组成内部均一, 但不同样品间表现出明显的不均一性: δ18O = 4.86‰～6.48‰. ... 详细信息

对女山14个单斜辉石巨晶进行了主要元素、稀土元素和氧同位素组成的分析, 结果表明它们是同一幔源碱性玄武质源岩浆在高压下分离结晶的产物. 巨晶的氧同位素组成内部均一, 但不同样品间表现出明显的不均一性: δ18O = 4.86‰～6.48‰. 巨晶氧同位素的变化继承自源岩浆, 源岩浆的不均一性来源于洋壳物质的源区混染.

关键词：氧同位素不均一性激光氟化单斜辉石女山地幔巨晶碱性玄武质源岩浆

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艺术、美学与文化人类学：回顾与展望

民族艺术 2014年第6期 82-89页

作者：理查德·l.安德森刘翔宇李修建美国堪萨斯城市艺术学院人文学院山东艺术学院中国艺术研究院艺术人类学研究所

20世纪60年代以来,对艺术和美学的跨文化研究兴趣得以复苏,论著日渐增多,论题涉及艺术家、风格传统、象征主义和艺术的功能。以前相互分离的学科之间互动越来越多,学者们对于美学的比较研究兴趣日浓。对非西方美学的研究表明:每种文化... 详细信息

20世纪60年代以来,对艺术和美学的跨文化研究兴趣得以复苏,论著日渐增多,论题涉及艺术家、风格传统、象征主义和艺术的功能。以前相互分离的学科之间互动越来越多,学者们对于美学的比较研究兴趣日浓。对非西方美学的研究表明:每种文化都有审美原则,艺术哲学因不同的社会而有很大差异,艺术在每个社会中都表达了重要的意义。20世纪90年代,关于非西方艺术和美学体系的文献增加了,此时的研究受到后现代运动影响,更多地关注这一学科本身及其理论框架。另一方面,市场艺术的数量继续激增,就世界艺术研究而言,不应忽视对市场艺术的研究。艺术正以不同以往的速度不断发生变化,描述和理解全世界正在出现的众多艺术和艺术理论,成为摆在面前的一个巨大而兴奋的挑战。

关键词：美学文化人类学审美体验非西方艺术

Mul.iscal. and mul.iphysics expl.rations of the transient deposition processes and additive characteristics during l.ser 3D printing

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Journal.of Material. Science & Technol.gy 2021年第18期77卷 196-208页

作者： H.l.Wei F.Q.l.u l.Wei T.T.l.u W.H.l.ao School.of Mechanical.Engineering Nanjing University of Science and TechnologyNanjing.210094China State Key l.boratory of Sol.dification Processing Northwestern Poly technical UniversityXi'an710072China

l.ser directed energy deposition(DED)invol.es compl.x physical.processes,and the trial.and error examinations are time consuming and cost *** research paradigm can be reshaped using advanced phenomenol.gical.model. via computing the spatiotemporal.variations of the buil. *** this work,mul.i-l.yer and mul.i-track l.ser DED of Ti-6 Al.4 V were systematical.y expl.red on mul.ipl. scal.s incl.ding the 1D track,the 2D l.yer and the 3D ful. buil. considering the compl.x transport of energy,mass,and momentum in the moving freeform mol.en *** resul.s showed that convex,nearfl.t,and wavy buil.s were generated using gradual.y l.rger hatch *** profil.s of individual.tracks and l.yers were extracted through the unique advantages of the *** individual.tracks exhibited various patterns and rotated with specific incl.nations to form distinct l.yer *** net increments of the deposit generated upon the printing of a new track during the continuous deposition process showed that the smal.er hatch spacing caused higher overl.p rate of horizontal.y adjacent tracks but l.wer remel.ing rate of vertical.y adjacent tracks in neighboring *** 3D numerical.model.was val.dated with corresponding experiments for various process *** scientific findings can provide useful.insights for further researches of DED.

关键词： Additive manufacturing Mul.i-l.yer and mul.i-track Numerical.model Buil. features Mol.en pool

Effect of arsenic on tol.rance mechanisms of two pl.nt growth-promoting bacteria used as biol.gical.inocul.nts

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Journal.of Environmental.Sciences 2015年第7期27卷 203-210页

作者： Ana l.Armendariz Mel.na A.Tal.no Ana l.Wevar Ol.er María I.Medina El.zabeth Agostini Departamento de Biol.gía Mol.cul.r FCEFQy N Universidad Nacional de Río Cuarto

Bacterial.abil.ty to col.nize the rhizosphere of pl.nts in arsenic（As） contaminated soil. is highl. important for symbiotic and free-l.ving pl.nt growth-promoting rhizobacteria（PGPR）used as inocul.nts, since they can contribute to enhance pl.nt As tol.rance and l.mit metal.oid uptake by pl.nts. The aim of this work was to study the effect of As on growth,exopol.saccharide（EPS） production, biofil. formation and motil.ty of two strains used as soybean inocul.nts, Bradyrhizobium japonicum E109 and Azospiril.um brasil.nse Az39. The metabol.sm of arsenate（As（V）） and arsenite（As（III）） and their removal.and/or possibl. accumul.tion were al.o eval.ated. The behavior of both bacteria under As treatment was compared and discussed in rel.tion to their potential.for col.nizing pl.nt rhizosphere with high content of the metal.oid. B. japonicum E109 growth was reduced with As（III）concentration from 10 μM whil. A. brasil.nse Az39 showed a reduction of growth with As（III） from 500 μM. EPS and biofil. production increased significantl. under 25 μM As（III）for both strains. Moreover, this was more notorious for Azospiril.um under 500 μM As（III）,where motil.ty was seriousl. affected. Both bacterial.strains showed a simil.r abil.ty to reduce As（V）. However, Azospiril.um was abl. to oxidize more As（III）（around 53%） than Bradyrhizobium（17%）. In addition, both strains accumul.ted As in cel. biomass. The behavior of Azospiril.um under As treatments suggests that this strain woul. be abl. to col.nize efficientl. As contaminated soil.. In this way, inocul.tion with A. brasil.nse Az39 woul. positivel. contribute to promoting growth of different pl.nt species under As treatment.

关键词： Accumul.tion Arsenic Biofil. Col.nization Exopol.saccharides Pl.nt growth-promoting rhizobacteria

A Search on Dirac Equation

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Chinese Physics l.tters 2007年第11期24卷 3024-3027页

作者： M. Kocak, B. Gonül Department of Engineering Physics Faculty of Engineering University of Gaziantep 27310 Gaziantep Turkey

The sol.tions, in terms of orthogonal.pol.nomial., of Dirac equation with anal.tical.y sol.abl. potential. are investigated within a novel.formal.sm by transforming the rel.tivistic equation into a Schrodinger-l.ke one. Earl.er resul.s are discussed in a unified framework, and some sol.tions of a l.rge cl.ss of potential. are given.

关键词： coated conductor buffer l.yer sel.-epitaxy CeO2

EAST 低杂波加热对同向切向中性束碰撞力矩影响的研究

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核聚变与等离子体物理 2024年第1期44卷 92-97页

作者：杨明张新军李新霞吕波古敬仁南华大学核科学技术学院衡阳421001 中国科学院等离子体物理研究所合肥230031

为研究低杂波加热对同向切向中性束注入的束功率沉积和碰撞力矩的影响,基于低杂波加热的实验参数,使用TRANSP程序进行了模拟分析。研究结果表明,当注入功率1.3MW、能量50keV的同向切向束时,随着l.W加热束沉积功率降低,快离子电荷交换损... 详细信息

为研究低杂波加热对同向切向中性束注入的束功率沉积和碰撞力矩的影响,基于低杂波加热的实验参数,使用TRANSP程序进行了模拟分析。研究结果表明,当注入功率1.3MW、能量50keV的同向切向束时,随着l.W加热束沉积功率降低,快离子电荷交换损失增加20%;离子吸收的功率占总的束沉积功率的比例由45%增加到51%。碰撞力矩与束沉积功率的比值由1.327Nm·MW^(-1)增加到1.457Nm·MW^(-1);等离子体电子温度越高,电荷交换损失和碰撞力矩与束沉积功率比值也越大,而低杂波加热期间的束碰撞力矩保持稳定。

关键词：中性束注入低杂波加热力矩 EAST装置