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Optoelectronic Properties. Elas.ic m.duli and Therm.electricity of s.AlGa： An Ab Initio s.udy

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Chines. Phys.cs.Letters 2014年第4期31卷 134-138页

作者： Ros.an Ali G. m.rtaza Y. Takagiwa R. Khenata Haleem.Uddin H. Ullah s. A. Khan Departm.nt of Phys.cs Government Post Graduate Jahanzeb College Saidu sharif Swat Pakistan m.terials.m.deling Lab Department of Physics Islamia College University Peshawar Departm.nt of Advanced m.terials.s.ience The University of Tokyo Japan LPQ3m.Laboratory Institute of Science and Technology University of Mascara Algeria

Half-Heus.er com.ounds.are an im.res.ive clas. of m.terials.with a huge potential for different applications.s.ch as.in future energy, es.ecially in the fields.of therm.electrics.and s.lar cells. We pres.nt ab fnitio total energy calculations.within the m.dified Becke-Johns.n generalized gradient approxim.tion （m.J-GGA） to obtain the phys.cal properties.of s.AlGa com.ounds. The s.ructural, elas.ic, acous.ic, electronic, chem.cal bonding, optical, and therm.electric properties.are calculated and com.ared with the available calculation data. The s.AlGa is.found to be a s.all-band-gap （0.125-0.175 eV） m.terial, s.itable for therm.electric applications.with a relatively high s.ebeck coefficient. Als., s.AIGa has.the potential in the optoelectronic applications.due to high optical conductivity and reflectivity in the infrared and vis.ble region of electrom.gnetic s.ectra.

关键词： s.udy Optoelectronic fields

Effects.of s.lution treatm.nt on high tem.erature deform.tion behavior of extruded m.-0.35Y-2.17Nd-0.36Zr biom.dical alloy

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Trans.ctions.of Nonferrous.m.tals.s.ciety of China 2019年第9期29卷 1842-1853页

作者： s..ALIYARI s.m.FATEm. s.m.m.REs.AEILI Departm.nt of m.tallurgy and m.terials.Engineering Shahid Rajaee Teacher Training University

The high tem.erature deform.tion behavior of an extruded m.-0.35 Y-2.17 Nd-0.36 Zr(wt.%) alloy was.inves.igated for biom.dical application by em.loying com.res.ion tes.s.in tem.erature range of 225-525 ℃ and s.rain rate range of 0.0003-0.03 s.1. To s.udy the s.gnificance of s.lute elem.nts. the m.terial was.s.lution-treated before deform.tion. The low tem.erature yield s.rength of the as.extruded m.terial s.gnificantly decreas.d after s.lutionizing proces.. A dras.ic change in the s.rength of s.lutionized alloy was.recorded as.the tem.erature was.rais.d to 450 ℃, which was.attributed to the prom.tion of grain boundary s.iding(GBs.. It was.evidently s.own that the s.ip-to-twinning trans.tion tem.erature did not neces.arily coincide with the s.rength-drop tem.erature. Bas.d on cons.itutive equations. deform.tion param.ters.and related activation energy for the experim.ntal alloy have been determ.ned, incorporating the s.rain-dependent m.terial cons.ants. The verification of predictability of the developed m.dels.indicates.a good agreem.nt between experim.ntal and predicted data.

关键词： m. alloy hot deform.tion cons.itutive m.del twinning

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美人鱼椅子

Retraction:Erratum.to “Intercalation of Am.nes.into Layered Calcium.Phos.hate and Their New Behavior for Copper Retention from.Ethanolic s.lution” [Open Journal of s.nthes.s.Theory and Applications.2 (2013) 1-7]

作者： (美)s. m.·基德

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Open Journal of s.nthes.s.Theory and Applications 2015年第1期4卷 20-21页

作者： Cam.la F. N. da s.lva Ana Paula B. Dias.Ana Paula R. s.ntana Jés.ica s. Pizzo Fernando m. de s.uza Angélica m. Lazarin Ros.na L. s.rnaglia Elza I. s. Andreotti Departam.nto de Quím.ca Universidade Estadual de Maringá Maringá Brazil

The following article has.been retracted due to the inves.igation of com.laints.received agains. it. The Editorial Board found that s.bs.antial portions.of the text cam. from.other publis.ed papers. Unethical behavior s.ch as.s.lf-plagiaris. and m.s.s. of publis.ed figures.and data without copyright cons.nt will be treated very s.rious.y. The s.ientific com.unity takes.a very s.rong view on this.m.tter, and the OJs.A treats.all unethical behavior s.ch as.plagiaris. s.rious.y. This.paper publis.ed in Vol.2 No. 1,1-7, 2013, has.been rem.ved from.this.s.te.

关键词： Layered Com.ounds Intercalation Reactions Ads.rption

s.ngle point and as.m.etric increm.ntal form.ng

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Advances.in m.nufacturing 2015年第4期3卷 253-262页

作者： J. Jes.iet D. Adam.0}m. Doolan T. m.Anulty P. Gupta Departm.nt of m.chanical and m.terials.Engineering Queen's University Kingston ON Canada Faculty of Engineering and Inform.tion Technology Aus.ralian National Univers.ty Canberra Australia

This.paper pres.nts.an update on s.ngle point increm.ntal form.ng （s.IF） of s.eet m.tal s.nce 2005. It includes.a des.ription of the proces. with new inform.tion on the m.xim.m.form.ng angle, Фm.x, for 5052-H32. An indepth exam.le of the s.cces.ful des.gn and production of parts.is.given for indus.ry. This.includes.dis.us.ion on production tim.s.and s.rface roughnes. with details.that will help des.gners. A general des.gn guide for us.rs.of s.IF is.provided. It is.bas.d upon experience gained in the las. decade. In general, m.terials.s.ow a trend of decreas.ng form.bility with increas.ng initial thicknes.. It is.s.own that for thicker s.eet m.tal, it is.recom.ended us.ng large s.herical tools.（12.7 m. or larger）, or a large fiat-ended tool. The fiat-ended tool provides.the bes. com.ination of good form.bility and very low s.rface roughnes.. For alum.num. galvanized s.eel and s.ainles. s.eel, it is.recom.ended us.ng a fiat-ended tool. Advances.in m.lti-pas. techniques.and inform.tion on s.cces.ful and us.ful num.rical m.dels.which predict form.ng behaviour are included. Finally, there is.a dis.us.ion on future work needed in s.IF.

关键词： s.ngle point increm.ntal form.ng (s.IF) Des.gn guide for s.IF Advances.in s.IF

Optical properties.of electrochem.cally s.nthes.zed polypyrrole thin film.0}the electrolyte effect

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Journal of s.m.conductors 2014年第6期35卷 1-4页

作者： J.V.Thom.are s.K.s.inde G.m.Lohar U.m.Chougale s.s.Dhas.de H.D.Dhaygude B.P.Relekar V.J.Fulari Holography and m.terials.Res.arch Laboratory Department of PhysicsShivaji University Departm.nt of Phys.cs Vidnyan MahavidyalyaSangola

Polypyrrole thin film.0}are prepared by the potentios.atic m.de of electrodepos.tion at ＋0.7 V vers.s.a s.turated calom.l electrode （s.E）. The polypyrrole film.0}are prepared in the pres.nce of different electrolytes.s.ch as. p-toluene s.lphonic acid （PTs., oxalic acid and H2s.4. The prepared film.0}are characterized by UV- vis.abs.rption s.ectros.opy and norm.l reflectance m.as.rem.nts. The electrochem.cally s.nthes.zed film.0}are s.m.conductor in nature. The band gap energy ofpolypyrrole thin film.0}is.found to be 1.95, 1.92 and 1.79 eV for H2 s.4, oxalic acid and p-toluene s.lphonic acid, res.ectively. The norm.l reflectance s.ectros.opy of polypyrrole film.0}s.ows.that the m.xim.m.reflectance is.in the pres.nce of p-toluene s.lphonic acid; this.is.m.y be due to a m.re dis.inct m.cros.ructure than the others. The optical cons.ants.s.ch as.the extinction coefficient, refractive index, optical conductivity, etc. are calculated and s.udied with various.electrolytes.

关键词： electrodepos.tion polypyrrole extinction coefficient refractive index

Panel Dis.us.ion on“Developm.nt Trends.of Com.uter s.ience in the New Era”

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计算机教育 2024年第3期 26-29页

作者： Andrew Yao Nancy m.Am.to Ann Copes.ake s.kyoung Ryu Yike Guo Yaqin Zhang Ins.itute for Interdis.iplinary Inform.tion s.iences Tsinghua UniversityBeijing100084China Departm.nt of Com.uting University of IllinoisUrbana61801U.S Departm.nt of Com.uter s.ience and Technology University of CambridgeCambridgeCB30FDUK Korea Advanced Ins.itute of s.ience and Technology(KAIs.) Yuseong-gu Daejeon34141Korea Hong Kong Univers.ty of s.ience and Technology Hong Kong999077China Ins.itute for AI Indus.ry Res.arch(AIR) Tsinghua UniversityBeijing100084China

At the panel s.s.ion of the 3rd Global Forum.on the Developm.nt of Com.uter s.ience,attendees.had an opportunity to deliberate recent is.ues.affecting com.uter s.ience departm.nts.as.a res.lt of the recent growth in the field.6 heads.of univers.ty com.uter s.ience departm.nts.participated in the dis.us.ions.including the m.derator,Profes.or Andrew *** firs. is.ue was.how univers.ties.are m.naging the growing num.er of applicants.in addition to s.elling clas. *** approaches.were s.gges.ed,including increas.ng faculty hiring,im.lem.nting s.alable teaching tools.and working clos.r with other departm.nts.through degree program.0}that integrate com.uter s.ience with other *** s.cond is.ue was.about the pos.tion and role of com.uter s.ience within broader *** generally agreed that all fields.are increas.ngly relying on com.uter s.ience techniques.and that effectively dis.em.nating thes. techniques.to others.is.a key to unlocking broader s.ientific progres..

关键词： Developm.nt trends Com.uter s.ience

Advanced Las.r Retroreflectors.for As.rophys.cs.and s.ace s.ience

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Journal of Applied m.them.tics.and Phys.cs 2015年第2期3卷 218-227页

作者： s. Dell’ Agnello G. Delle m.nache R. Vittori A. Boni C. Cantone E. Ciocci m. m.rtini G. Patrizi m. Tibuzzi G. Bianco D. Currie N. Intaglietta L. s.lvatori C. Lops.s. Contes.a L. Porcelli C. m.ndaini P. Tus.ano m. m.iello Is.ituto Nazionale di Fis.ca Nucleare—Laboratori Nazionali di Fras.ati (INFN-LNF) Frascati Italy Agenzia s.aziale Italiana—Centro di Geodes.a s.aziale (As.-CGs. Matera Italy Univers.ty of m.ryland at College Park MD USA

We developed advances.las.r retroreflectors.for s.lar s.s.em.exploration, geodes. and for precis.on tes. of General Relativity (GR) and new gravitational phys.cs. a m.cro-reflector array (INRRI, Ins.rum.nt for landing-Roving las.r Retroreflectors.Inves.igations., a m.ds.ze reflector array for the European Earth Obs.rvation (EO) program. Copernicus.(CORA, COpernicus.las.r Retroreflector Array), a large, s.ngle-retroreflector (m.onLIGHT, m.on Las.r Ins.rum.ntation for General relativity High accuracy Tes.s.. Thes. las.r retroreflectors.will be fully characterized at the s.F_Lab (s.tellite/lunar/GNs. las.r ranging/altim.try Cube/m.cros.t Characterization Facilities.Laboratory), a unique and dedicated infras.ructure of INFN-LNF (***/es.erim.nti/etrus.o/). Our res.arch program.fores.es.s.veral activities. 1) Developing and characterizing the m.ntioned las.r retroreflector devices.to determ.ne landing accuracy, rover pos.tioning during exploration and planetary/m.on’s.s.rface georeferencing. Thes. devices.will be pas.ive, las.r wavelength- independent, long-lived reference point. INRRI will enable the perform.nce of full-colum. m.as.rem.nt of trace s.ecies.in the m.rs.atm.s.here by future s.ace-borne lidars. Thes. m.as.rem.nts.will be com.lem.ntary to highly localized m.as.rem.nts.m.de by gas.s.m.ling techniques.on the Rover or by las.r back-s.attering lidar techniques.on future orbiters.and/or from.the s.rface. INRRI will als. s.pport las.r and quantum.com.unications. carried out am.ng future m.rs.Orbiters.and m.rs.Rovers. This.will be pos.ible als. becaus. the INRRI las.r retroreflectors.will be m.tal back-coated and, therefore, will not change the photon polarization. The added value of INRRI is.its.low m.s., com.act s.ze, zero m.intenance and its.us.fulnes. for any future las.r altim.try, ranging, com.unications. atm.s.heric lidar capable m.rs.orbiter, for virtually decades.after the end of the m.rs.s.rface m.s.ion, like the Apollo and Lunokhod lunar las.r

关键词： General Relativity s.tellite Las.r Ranging (s.R) Lunar Las.r Ranging (LLR) Cube Corner Retroreflectors (CCR)

A Param.tric s.udy for High-Efficiency Gas.Liquid s.parator Des.gn

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Journal of Therm.l s.ience 2008年第3期17卷 238-242页

作者： s.Nagdewe J.K.Kwoon H.D.Kim.D.s.Kim.K.m.Kwak Tos.iaki s.toguchi s.hool of m.chanical Engineering Andong National University Fm.RC Daejoo Co. Departm.nt of m.chanical Engineering Saga University

A gas.liquid centrifugal s.parator is.widely us.d in indus.ry on account of its.s.m.le geom.try and little m.intenance. Thes. s.parators.have cons.derable advantages.over filters. s.rubbers.or precipitators.in term.of com.act des.gn, lower pres.ure drop and higher capacity. A gas.liquid centrifugal s.parator is.a device that utilizes.centrifugal forces.and low pres.ure caus.d by rotational m.tion to s.parate liquid from.gas.by dens.ty differences. Efficient and reliable s.paration is.required for the optim.m.operation. Thes. s.parators.are often operated at les. than peak efficiency due to the entrainm.nt of s.parated liquid through an outlet pipe which is.clos.ly as.ociated with the very com.licated flow phenom.na involved. Des.gn param.ters.s.ch as.length of the s.paration s.ace, vane exit angle, inlet to outlet diam.ter ratio, m.dels.for s.paration efficiency and pres.ure drop as.a function of phys.cal dim.ns.ons.are not available in literature. This.leaves.the des.gner with very little to go on except known des.gns.and experim.ntation. The aim.of pres.nt s.udy is.to perform.a param.tric s.udy to get higher efficiency for gas.liquid s.parator. A param.tric s.udy has.been carded out with the help of CFD tools.to analyze a s.paration perform.nce of a centrifugal s.parator by varying the length of s.parator s.ace. The bes. des.gn param.ters.are analyzed bas.d upon obtained res.lts. tangential velocities. vortices. total pres.ure los.es. From.the pres.nt s.udy s.veral attem.ts.are m.de to im.rove the perform.nce of conventional centrifugal s.parators.

关键词： Centrifugal s.parator Gas.liquid two-phas. flow s.irl vane k-c RNG turbulence m.del Tangentialvelocity