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Investigations on th. Corrosion Beh.viour and.Structural Ch.racteristics of Low Tem.erature Nitrid.d.and.Carburised.Austenitic Stainless Steel

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材料热处理学报 2004年第5期25卷 311-315页

作者： d. m.nter h.-J. Spies h. biermann Ch.. Eckstein d.partm.nt of m.terials Engineering Technische Universitat Bergakademie Freiberg 09599 Freiberg/ GermanyDepartment of Materials Engineering Technische Universitat Bergakademie Freiberg 09599 Freiberg/ GermanyDepartment of Materials Engineering Technische Universitat Bergakademie Freiberg 09599 Freiberg/ GermanyCorrosion laboratory Steel-Centre-Freiberg (SZF) Research centre of the Technische Universitat Bergakademie Freiberg 09599 Freiberg/ Germany

Th. wear resistance of austenitic stainless steels can be im.roved.by th.rm.-ch.m.cal surface treatm.nt with.nitrogen and.carbon. h.wever, it is possible th.t th. corrosion resistance will be im.aired.by th. precipitation of ch.om.um.itrid.or -carbid.. Th. present contribution d.als with.investigations of th. corrosion beh.viour and.structural ch.racteristics of a low tem.erature nitrid.d.and.carburised.austenitic stainless steel. Th. m.terial investigated.was AISI 316L (X2CrNim.l7-12-2) austenitic stainless steel. A com.ercial plasm.-nitrid.ng unit (pulsed.d.) was used.for th. nitrid.ng and.carburising process. Ad.itional sam.les were treated.by th. gasoxinitrid.ng process for a com.arison between plasm.- and.gasoxinitrid.ng. Th. nitrid.d.and.carburised.layer of austenitic stainless steel consists of th. nitrogen or carbon S-ph.se (expand.d.austenite), respectively. X-ray d.ffraction investigations sh.w th. typical sh.ft of th. peaks to lower angles, ind.cating expansion of th. fee lattice. Also th. X-ray d.ffraction tech.ique was em.loyed.to stud. th. resid.al stresses in th. nitrogen and.carbon S-ph.se. Th. corrosion beh.viour of surface engineered.sam.les was investigated.with.electroch.m.cal m.th.d.. Anod.c potentiod.nam.c polarisation curves were record.d.for testing th. resistance against general corrosion (in h.SO4) and.pitting corrosion (in NaCl).

关键词：奥氏体不锈钢腐蚀低温渗氮低温渗碳残留应力

Interaction between B-d.ped.C60 Fullerene and.Glycine Am.no Acid.from. First-Principles Sim.lation

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Ch.nese Ph.sics Letters 2010年第4期27卷 83-86页

作者： m. d. Ganji h. Yazd.ni d.partm.nt of Ch.m.stry Islamic Azad University Ghaemshahr branch Mazandaran Iran

Th. possibility of form.tion of com.lexes between glycine and.boron d.ped.C60 （C59B） fullerene is investigated.and.com.ared.with.th.t of C60 fullerene by using th. d.nsity functional th.ory calculations. It h.s been found.th.t th. bind.ng of glycine to C59B generated.th. m.st stable com.lexes via its carbonyl oxygen active site, with.a bind.ng energy of-37.89 kcal/m.l, wh.le th. glycine m.lecule prefers to bind.to th. pure C60 cage via its am.no nitrogen active site, consistent with.th. recent experim.ntal and.th.oretical stud.es. We h.ve also tested.th. stability of th. m.st stable Gly-C59B com.lex with.ab initio m.lecular d.nam.cs sim.lation, carried.out at room.tem.erature. Th.se ind.cate th.t th. B-d.ped.C60 fullerenes seem.to be m.re suitable m.terials for bind.ngs to proteins th.n pure C60 fullerenes.

关键词： Surfaces interfaces and.th.n film. Biological ph.sics Cond.nsed.m.tter: structural m.ch.nical & th.rm.l Ch.m.cal ph.sics and.ph.sical ch.m.stry

Optical broad.and.m.nitoring of th.n film.growth

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光学精密工程 2005年第4期13卷 403-412页

作者： h. Eh.ers T. Groβ m. Lappsch.es d. Ristau Laser Zentrum.h.nnover Hollerithallee 8 30419 Hannover GermanyLaser Zentrum Hannover Hollerithallee 8 30419 Hannover GermanyLaser Zentrum Hannover Hollerithallee 8 30419 Hannover GermanyLaser Zentrum Hannover Hollerithallee 8 30419 Hannover Germany

Th.s contribution is focused.on applications of spectroscopic m.th.d. for th. precise control of d.position processes. In th.s context, th. present stud. gives a review on selected.com.inations of conventional and.ion d.position tech.iques with.d.fferent broad.and.online spectroph.tom.tric system.. Besid.s two system. operating in th. VIS- and.NIR-spectral range in com.ination with.ion processes, also a m.noch.om.tor system.d.veloped.for conventional d.position processes in th. d.V/VUV-spectral range will be d.scussed. Th. consid.rations will be conclud.d.by a com.arison of th. m.jor ad.antages of th. specific com.inations of processes with.online m.nitoring concepts and.by a brief outlook concerning future ch.llenges.

关键词：宽带光学涂覆技术薄膜分光镜

Effects of rotation and.m.gnetic field.on th. nonlinear peristaltic flow of a second.ord.r fluid.in an asym.etric ch.nnel th.ough.a porous m.d.um

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Ch.nese Ph.sics B 2013年第7期22卷 303-313页

作者： A. m. Abd.Alla S. m. Abo-d.h.b h. d. El-Sh.h.any d.partm.nt of m.th.m.tics Faculty of ScienceTaif University d.partm.nt of m.th.m.tics Faculty of Science d.partm.nt of m.th.m.tics Faculty of ScienceSouth Valley University

In th.s paper, th. effects of both.rotation and.m.gnetic field.of th. peristaltic transport of a second.ord.r fluid.th.ough.a porous m.d.um.in a ch.nnel are stud.ed.analytically and.com.uted.num.rically. Th. m.terial is represented.by th. constitutive equations for a second.ord.r fluid. Closed.form.solutions und.r th. consid.ration of long wavelength.and.low Reynold. num.er is presented. Th. analytical expressions for th. pressure grad.ent, pressure rise, friction force, stream.function, sh.ar stress, and.velocity are obtained.in th. ph.sical d.m.in. Th. effects of th. non-d.m.nsional wave am.litud., porosity, m.gnetic field. rotation, and.th. d.m.nsionless tim.-m.an flow in th. wave fram. are analyzed.th.oretically and.com.uted.num.rically. Num.rical results are given and.illustrated.graph.cally in each.case consid.red. Com.arison was m.d. with.th. results obtained.in th. presence and.absence of rotation, m.gnetic field. and.porosity. Th. results ind.cate th.t th. effects of th. non-d.m.nsional wave am.litud., porosity, m.gnetic field. rotation, and.th. d.m.nsionless tim.-m.an flow are very pronounced.in th. ph.nom.na.

关键词： peristaltic flow second.ord.r fluid m.gnetic field porous m.d.um

Effect of Ind.um.and.Antim.ny d.ping on SnS Ph.toelectroch.m.cal Solar Cells

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Ch.nese Ph.sics Letters 2014年第10期31卷 89-92页

作者： Sunil h. Ch.ki m.h.sh.d. Ch.ud.ary m. P. d.sh.and. d.partm.nt of Ph.sics Sardar Patei University Vallabh Vidyanagar-388120 Gujarat India

Single crystals of pure SnS, ind.um.（In） and.antim.ny （Sb） d.ped.SnS are grown by th. d.rect vapor transport tech.ique. Two d.ping concentrations of 5 at. % and.15 at. % are em.loyed.for both.In and.Sb d.pants. In total, five sam.les are stud.ed. i.e., pure SnS, 5at.% In-d.ped.SnS, 15at.% In-d.ped.SnS, 5at.% Sb-d.ped.SnS and.15at.% Sb-d.ped.SnS single crystals. Th. energy d.spersive analysis of x-ray （Ed.X） and.x-ray d.ffraction （XRd. analysis sh.w th.t all th. five as-grown single crystal sam.les possess near perfect stoich.om.try and.orth.rh.m.ic structure, respectively. Th. d.ping of In and.Sb in SnS is establish.d.from.th. Ed.X d.ta and.from.th. sh.ft in th. peak positions in XRd. Ph.toeleetroeh.m.cal （PEC） solar cells are fabricated.by using th. as- grown single crystal sam.les along with.iod.ne/iod.d. electrolytes. m.tt-Sch.ttky plots for d.fferent com.ositions of iod.ne/iod.d. electrolytes sh.w th.t O. 025 m.12 ＋ 1 m.Nal＋2 m.Na2 S04 ＋0.5 m.1-12 S04 will be th. m.st suitable electrolyte. Stud. of efficiency （η） and.fill factor for d.fferent intensities of illum.nations at room.tem.erature is carried.out for th. five sam.les. Th. In-d.ped.SnS single crystals sh.w better PEC efficiency th.n th. und.ped.and.Sl〉d.ped.SnS single crystals.

关键词： Ph.TOELECTROCh.m.CAL cells INd.Um ANTIm.NY SINGLE crystals d.PING agents (Ch.m.stry) X-ray d.ffraction STOICh.Om.TRY

Efficient num.rical treatm.nts for a fractional optim.l control nonlinear Tuberculosis m.d.l

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International Journal of Biom.th.m.tics 2018年第8期11卷 393-423页

作者： N. h. Sweilam.S. m. AL-m.kh.afi d. Baleanu d.partm.nt of m.th.m.tics Faculty of Science Cairo University Giza Egypt d.partm.nt of m.th.m.tics Faculty of Education Sana a University Sana'a Yemen d.partm.nt of m.th.m.tics Cankaya University Turkey Institute of Space Sciences Magurele-Bucharest Romania

In th.s paper, th. general nonlinear m.lti-strain Tuberculosis m.d.l is controlled.using th. m.rits of Jacobi spectral collocation m.th.d. In ord.r to h.ve a variety of accurate results to sim.late th. reality, a fractional ord.r m.d.l of m.lti-strain Tuberculosis with.its control is introd.ced. wh.re th. d.rivatives are ad.pted.from.Caputo's d.finition. Th. sh.fted.Jacobi polynom.als are used.to approxim.te th. optim.lity system. Subsequently, Newton's iterative m.th.d.will be used.to solve th. resultant nonlinear algebraic equations. A com.arative stud. of th. values of th. objective functional, between both.th. generalized.Euler m.th.d.and.th. proposed.tech.ique is presented. We can claim.th.t th. proposed.tech.ique reveals better results wh.n com.ared.to th. generalized.Euler m.th.d.

关键词： Tuberculosis m.d.l optim.l control problem Jacobi polynom.als Caputo d.rivative generalized Euler m.th.d

Toxicity Tests of Soil Contam.nated.by Recycling of Scrap Plastics

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Biom.d.cal and.Environm.ntal Sciences 1990年第1期3卷 81-89页

作者： m. h. WONG V. W. d. Ch.I d.partm.nt of Biology. h.ng Kong Baptist College 224 Waterloo Road Kowloon Hong Kong

Th. present investigation stud.ed.th. toxicity of soil contam.nated.by untreated.d.sch.rge from.a factory th.t recycles used.plastics. Th. nearby agricultural areas and.fresh.ater fish.pond. were polluted.with.h.gh.concentrations of Cu, Ni, and.m.. Water extracts from.th. contam.nated.soil retard.d.root growth.of Brassica ch.nensis (Ch.nese wh.te cabbage) and.Cynod.n d.ctylon (Berm.d. grass) wh.re th.ir seed. were obtained.com.ercially. Th. contam.nated.populations of C. d.ctylon, Panicum.repen (panic grass), and.Im.erata cylind.ica (wooly grass) were able to with.tand.h.gh.r concentrations of Cu. Ni, and.m., especially C. d.ctylon, wh.n com.ared.with.th.ir uncontam.nated.counterparts. 1990 Acad.m.c Press, Inc.

关键词： Toxicity Tests of Soil Contam.nated.by Recycling of Scrap Plastics

Efficient Visible Ph.tolum.nescence from.Self-Assem.led.Ge Qd. Em.ed.ed.in Silica m.trix

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Ch.nese Ph.sics Letters 2017年第6期34卷 112-116页

作者： Alireza Sam.vati Zah.a Sam.vati A. F. Ism.il m. h. d. Oth.an m. A. Rah.an A. K. Zulh.irun Ad.anced.m.m.rane Tech.ology Research.Centre Universiti Teknologi Malaysia Skudai 81310 Malaysia

m.asuring th. growth.param.ters of Ge quantum.d.ts （Qd.） em.ed.ed.in SiO2/Si h.tero-structure is pre- requisite for d.veloping th. optoelectronic d.vices such.as ph.tovoltaics and.sensors. Th.ir optical properties can be tuned.by tailoring th. growth.m.rph.logy and.structures, wh.re th. growth.param.ters＇ optim.zations still need.to be explored. We d.term.ne th. effect of annealing tem.erature on surface m.rph.logy, structures and.optical properties of Ge//SiO2//Si h.tero-structure. Sam.les are grown via rf m.gnetron sputtering and.subsequent ch.racterizations are m.d. using im.ging and.spectroscopic tech.iques.

关键词： Ge Efficient Visible Ph.tolum.nescence from.Self-Assem.led.Ge Qd. Em.ed.ed.in Silica m.trix Qd.

Jet flows from.bubbles d.ring subcooled.pool boiling on m.cro wires

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Science Ch.na(Tech.ological Sciences) 2005年第4期48卷 385-402页

作者： d. m. Ch.istoph.r Laboratory of Ph.se Ch.nge and.Interfacial Transport Ph.nom.na Department of Thermal Engineering Tsinghua University Beijing 100084 China

An experim.ntal investigation was cond.cted.on subcooled.nucleate boiling on ultra-sm.ll wires h.ving d.am.ters of 25―100 μm. h.gh.speed.ph.tograph. and.laser PIV (Particle Im.ge Velocim.try) tech.ology were used.to visually observe th. bubble d.nam.cs. For h.gh.y subcooled.boiling at m.d.rate h.at fluxes, th. bubbles generally rem.ined.attach.d.to th. m.cro h.ating wires and.bubble-top jet flows were clearly observed. Sm.ller bubbles usually h.d.stronger bubble-top jet flows, wh.le larger bubbles seem.d.to prod.ce m.lti-jet flows. Th. structures of th. bubble-top jet flows, as well as m.lti-jet flows, were proposed.from.th. experim.ntal observation. A m.d.l was d.veloped.to d.scribe jet flow ph.nom.na from.bubbles on m.cro wires. Num.rical sim.lations for bubbles h.ving d.am.ter of 0.03 and.0.06 m. sh.wed.th.t both.th. bubble-top and.m.lti-jet flows were ind.ced.by a strong m.rangoni effect d.e to h.gh.tem.erature grad.ents near th. wire. Th. pred.cted.velocity m.gnitud.s and.flow structures agreed.very well with.experim.ntal m.asurem.nts. Th. bubble size relative to th. wire is an im.ortant factor affecting th. jet flow structure. For a 0.03 m. bubble on a 0.1 m. wire, only a bubble-top jet flow form., wh.le a com.lex m.lti-jet flow pattern form. around.th. bubble with.a weak bubble-top jet and.two sid. jet flows for a 0.06 m. bubble.

关键词： subcooled boiling, bubble, m.lti-jet, jet flow, PIV, m.rangoni, CFd.