简介：Considerthemotionofimmersedhypersurfacesdrivenbysurfacediffusionflowandgiveanlowerboundonthelifespanofasmoothimmersedsolution,whichdependsonlyonhowmuchthecurvatureoftheinitialsurfaceisconcentratedinspace.

简介：<正>AsIraisedthecamera,YangJiaxiuwaswalkingalonganarrow,muddymountainpathinavirginfirforest,carryingabout50litresofwater.Insteadofrunningaway,shestoodtoattention,armsakimbo,andgivingmeaserioussmile.Thegiantwoodenbasketonherbackalmostmadeherfallasshetriedtostraightenherbody.Whenshefinallyarrivedatherhouseshetwistedher

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简介：AseriesofimprovementsinprolongingtheAODrefractorylininglifeinBaosteelareintroducedandanalyzedinthispaper,includingmodificationoftheAODshellshape,adjustmentofthetopslagcomponentsandselectionoftheside-blowingtuyeres.Firstly,thelayoutofside-blowtuyereswasalteredwiththeanglebetweeneachtwotuyeresbeing22.5°insteadoftheoriginal18°,andtheconnectionoftheoutsidesteelshellintheside-blowareawasmodifiedfromtheformerplatformshapewithgreatstressconcentrationintoanewsmoothcircleshape.Secondly,theslagcomponentswerechangedfromtheformerCaO-FeO-SiO2systemtotheCaO-MgO-SiO2system.Besides,thebasicityofthetopslagwaskepthigherthan1.8,andtheMgOcontentintheslagwaskeptwithintherangeof8%-12%.Finally,tuyereswithaninnerdiameter13%smallerthanthatoftheoriginaltuyereswereused.Basedontheseresearchandoptimizationwork,thethermodynamicsandkineticsintheAODrefiningbathhasbeenimprovedmarkedly,andthecampaignoftheAODhasbeenprolongedfrom45heatsatthebeginningofitsstart-uptothecurrent185heats.Meanwhile,theyieldofchromiumalloyandthedecarburizationefficiencyhavealsobeenimproved.

简介：Internationalhumanrightsinstruments,includingtheUniversalDeclarationofHumanRights(UDHR),theInternationalCovenant

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简介：TheundersignedisEgyptiancitizen64yearsold,ProfessionalEngineer,C.A.,U.S.A,lfxivinginJinzhouDistrict,Daliancitysincemorethan10months,visitedChina5timesbetweenMarch1998andMay2000forestablishmentofinternationalbusinessrelationsbetweentheChinesefirmsandbusinesspartnersintheMiddleEast&Africa.

简介：摘要：直到今天为盲人群体的生存状况是我国政府和社会长期关注的课题。我国目前有上千万盲人，是残疾人中不可忽视的一大群体。五感中的触觉对盲人产品感性设计起着至关重要的作用，因此智能手套要挖掘盲人的特殊心理需求，将视障人群的意志带入到设计的全过程，通过确定他们的潜在需求，以激发设计灵感，通过其作用于产品来从根本上消除盲人的自卑感、孤单感。Smart-Gloves将是一款多功能且支持后续开发升级的科技智能手套。

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简介：本文较清楚地说明了自己为什么喜欢电脑，以及为什么即使现在在初三了还要玩电脑，因为作者认识到电脑给他带来的好处，使他受益匪浅。小作者围绕一个中心的论点充分、合理地阐明了自己在这个问题上的观点。

简介：Insomesituations,theacceleratedlifetestonenvironmentalstressforelectronicproductsisnoteasilyimplementedduetovariousrestrictions,andthusengineersarelackingofdataoftheproductlifetest.Concerningthisproblem,environmentallifeoftheprintedcircuitboard(PCB)boardiscalculatedbywayofphysicsoffailure.InfluencesofthermalcycleandvibrationonPCBanditscomponentsarestudied.BasedontheanalysisofforceandstressbetweencomponentsandthePCBboardinthermalcycleeventsandvibrationevents,fourlifecomputingmodelsofpinsandsoldereddotsareestablished.Themillerdamageratioisusedtocalculatetheaccumulateddamageofapinorasoldereddot,andthentheenvironmentlifeofthePCBboardcanbedeterminedbythefirstfailedone.Finally,anexampleisusedtoillustratethemodelsandtheircalculations.

简介：EveninmyveryearlydaysinTibetanBuddhistartcircles,artauctionsandevenacademiccircles,IhadnotonlyheardthenameYesibutIalsoreadhisillustratedbooksonTibetanBuddhistart,whichwerewelldesignedandrichlyillustrated.Ialsobelievedtheywerequitevaluable.Nonetheless,whenIencounteredhimataBeijingSeminaronTibetanStudies,Iwasshocked.Hewasabout30yearsoldandayoung,handsome,elegantlydressedgentleman.

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简介：ThelifeofimpregnatedBa-Wcathodeswithanewconstructionhavebeenevaluatedusinganacceleratedlifetestatthreedifferenttemperatures(1170℃,1130℃,1090℃)andconstantcurrentdensity(2A/cm~2).Accordingtotherelationshipoflifewithoperatingtemperatures,anacceleratedequationhasbeensetup.Thecathodelifeatnormaloperatingtemperatureisdeductedbasedontheacceleratedequation.Theresultsshowthatlifeofthenovelcathodeexceeds190,000houratacurrentdensityof2A/cm~2.

简介：Oxford:OxfordUniversityPress,1997.ISBN0-19-815073-3.Pp.ix+514.$125.00.SincetheformationoftheinternationalPlutarchSocietyin1984therehasbeenadramaticincreaseinthenumberofpapers,conferences,articles,andbooksonPlutarch.Dr.Shipley'sthoroughandinsightfulstudyshouldbeassignedanhonoredplaceamongtherecentpublicationsonPlutarchanddeservestohaveawideinfluenceamongnotjustPlutarchscholarsbutalsoamonghistoriansofthefourthcenturyB.C.AgesilaosisoneofthemostcomplexandintriguingcharactersinGreekhistorysincehislifespansfromth...

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