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13 个结果
  • 简介:1Collectionstartingwithtwopiecesofembroidery.In1977,Chinawasunderagrayskyeverywhere.Ontheair,therewerenomorethan3to4radiostaions,whichemittedrevolutionarynewsandsongseveryday.Inmychildhood,justokeanyothersofthattime,Iwasalwayswearingclothesofamonotonouscolor.Momtiedmyhairintotwoponytailswithtwobrightredbowknots,whichbecametheonlybridhtcolorthatcouldbeseenonme.

  • 标签: 中国 收藏家 生活经历 曾丽 收藏品
  • 简介:我们在场在Hoare风格节目逻辑的标准标记打扫无用单元收集程序的保守变体的机器级的实现的确认。收集者的说明用分离逻辑在一个机器级的存储模型上被给,并且是足够强壮的保存任何普通mutator节目的安全性质。我们的确认充分在Coq证明助手被实现并且能作为带证明的代码包装的foundational立即被包装。我们的工作向造充分证明的生产质量无用单元收集程序做重要尝试。电子增补材料这篇文章(doi:10.1007/s11390-007-9049-z)的联机版本contatins增补材料,它对授权用户可得到。

  • 标签: 程序验证 垃圾信息收集器 程序安全 证明携带码
  • 简介:Comparedwithtraditionalsynchronousgenerators,windturbinegeneratorsaredifferentinelectricitygenerationprinciples,controlmodesandintegrationtopologies,whichmakestheirfaultcharacteristicschangealot.This,consequently,bringschallengesregardingthebehaviorofprotectionsforwindfarmcollectorsystems.Inthispaper,basedonapracticalwindfarm,configurationandsettingofrelayprotectionsforsuchacollectorsystemisanalyzedanddeterminedsystematicallyinconsiderationoftheselectivityandsensitivityoftheprotections.Resultsshowthatmisoperationofovercurrentrelayandzerosequenceovercurrentrelayofthenon-faultcollectorlineoccurs,andbusdifferentialrelayofcollectorbuscannotremovethesingle-phase-to-groundfault.Inordertosolvetheproblems,anovelsubstation-areaprotectionforcollectorsystemisproposedanditsoperationmechanismisdiscussed.

  • 标签: CONFIGURATION SETTING protective RELAY COLLECTOR s
  • 简介:ApoolcooledexperimentalmagnetbasedonthecopperstabilizedNbTisuperconductingwirewasdesigned,fabricatedandtested,inordertoevaluatetheengineeringdesignofthedipolesuperconductingmagnetforthecollectorring(CR)ofthefacilityforantiprotonandionresearch(FAIR)project.Inthispaper,theexperimentalsetupincludingquenchprotectionsystemwaspresented.Performanceoftheliquidheliumpoolcooledtestwasintroduced.Alloftheresultsindicateboththeperformanceofconductorandtheexperimentalsuperconductingmagnetunderlowtemperatureisstable,whichsuggeststheengineeringdesignarefeasiblefortheformalmagnetinCRoftheFAIRproject.

  • 标签: 实验装置 超导磁体 集电环 工程设计 性能测试 NBTI
  • 简介:EveninmyveryearlydaysinTibetanBuddhistartcircles,artauctionsandevenacademiccircles,IhadnotonlyheardthenameYesibutIalsoreadhisillustratedbooksonTibetanBuddhistart,whichwerewelldesignedandrichlyillustrated.Ialsobelievedtheywerequitevaluable.Nonetheless,whenIencounteredhimataBeijingSeminaronTibetanStudies,Iwasshocked.Hewasabout30yearsoldandayoung,handsome,elegantlydressedgentleman.

  • 标签: 佛教艺术 收藏家 生命 采访 学术界
  • 简介:Theflotabilityandmechanismofthecompositetantalite-niobitemineralswhichhavedifferentcontentoftheTa,Nb.Fe,Mnwithstyrenephosphonicacid(SPA)ascollectorareinvestigatedanddiscussed.Someimportantflotationparametersarefoundasfollows:SPAisabettercollectorforflotatingniobite-tantalitemineralthanother,theoptimumpHvalueinpulpislessthan5,theflotabilityofthosemineralsvarieswiththedifferentcontentofmineralcomposition,theflotabitityofthemineralswithhigherNb2O5contentisbetterthanthatwithhigherTa205content.HereweemphasizethatinwiderangeofpHinsolu-tiontheFe,Mnonthemineralsurfacesarethemainactivespeciesforflotationoftheseminerals.Inadditiontothis,someofre-searchworkbyusingAugerelectronspectroscopy,infraredspectroscopyandultravioletspectroscopyfordeterminingthesurfaceconditions,pretreatedbyacidornot,hasbeendone.ThecharacteristicsofadsorptionofSPAonthemineralsurfacesareexam-inedanddiscussed.ItisindicatedthattheSPAinteractswithFe,Mnionsonmineralsurfacesbythechemicalbondforce.Butonthewholeouterlayerofcollector,whichisnon-uniformmultilayer,itmaybesaidthattheadsorptionofSPAonthemineralsur-faceisbothchemico-adsorptionandphysico-adsorption,butthechemico-adsorptionispredominant.

  • 标签: FLOTATION MINERALS determining predominant ultraviolet COLLECTOR
  • 简介:Thispaperpresentstheheatingperformanceandenergydistributionofasystemwiththecombinationofground-sourceheatpumpandsolarcollectororasolar-assistedground-sourceheatpumpsystem(SAGSHPS)bycalculationandexperiment.Theresultsshowthattheaverageabsoluteerrorislessthan0.6℃andtherelativeerrorislessthan5%underthepulseloadwhentheanalyticalsolutiontothe2-DsolidcylindricalsourcemodelisusedfortheSAGSHPS.Thecoefficientofperformance(COP)oftheSAGSHPSis2.95-4.70.Theaveragefluidtemperatureintheboreholeheatexchangercanincreaseby3℃withtheassistanceofsolarcollector,whichwillimprovetheCOPoftheheatpumpbyapproximately10%fromtheexperimentaldata.Theenergycontributionstothetotalheatingloadofsoil,electricityandsolarare56.30%,36.87%and6.83%,respectively.

  • 标签: ground-source HEAT PUMP solar energy heating
  • 简介:Inordertoestimatethecut-sizeXcandthemechanicallybalancedparticlesintheaxialflowcyclonewiththeslit-separationmethod,thetangentialvelocitydistributionswerecalculatedbythefinitedifferencemethod.Incomparisonofthecalculatedresultsofthetotalcollectioneffciencywiththeexperimentalresults,thecalculatedresultsshowedalittlehigherthantheexperimentalresultsduetothere-entrainmentofthecollectedparticlesbyturbulence.Theeffectoftheslitforpromotingthecollectionefficiencywasnotrecognized.

  • 标签: 轴流旋风式尘灰收集器 收集效率 固定导片
  • 简介:ThispaperreportstheuseofAufilmstoimprovetheperformanceofthestackedsolidoxidefuelcell(SOFC)basedonthecharacterizationoftheinterfaceandtheadhesionbetweentheelectrodesoftheSOFCsandtheAgpaste.Thespecimensweremanufacturedtoperformtheexperimentasfollows.ASiO2waferwitha300mmnotchwasattachedtotheelectrodesofaSOFCbyaAgpasteandAufilm,whichweredepositedontheelectrodesbysputteringfor1minor5mindepositiontimeandannealedat300Cfor1h.Thefour-pointbendingtestwasperformed,whichresultedintheformationofanextendedcrackatthetiponthewafernotch,andthecrackpropagationwasobservedusingastereomicroscopeequippedwithacharge-coupleddevice(CCD).Consequently,theinterfacialadhesionenergyandtheeffectoftheAufilmbetweentheeachelectrodeandtheAgpastecanbeevaluated.Onthecathode,theinterfacialadhesionenergywithoutAufilmwas2.59J/m2(uppervalue)andtheadhesionenergyincreasedto11.59J/m2(uppervalue)and15.89J/m2(lowervalue)withtheAufilm.Ontheanode,theinterfacialadhesionenergywithoutAufilmwas1.74J/m2(uppervalue),whichincreasedto11.07J/m2(uppervalue)and14.74J/m2(lowervalue)withtheAufilm.Inaddition,theinterfaceareaswereanalyzedbyscanningelectronmicroscopy(SEM)andenergydispersivespectroscopy(EDS)toestimatetheinterfacedelamination.

  • 标签: Solid oxide fuel cell AU film
  • 简介:Heattransferintheevacuatedcollectortubeisathree-dimensionallaminarnaturalconvectionproblemdrivenbybuoyancy.Becauseofitscomplexity,noeffectivetheoreticalmodelisavailabledespiteoflimitedexperimentalworkwhichisconfinedtooneaspect.Thepresentworkaimstodepicttheconvectiveheattransferinsideatwo-endedinclinedtubewithEast-Westsymmetricheatinputusingnumericalmethods,Basedonreasonableassumptions,governingequationsoftheinsidefluidareestablished.Thecorrespondingdiscretizatedequationsaresolvedbyemplogyingnumericalmetholds.Thecalculatedresultsaredisplayedforvelocityandtemperatureprofilesondifferentcross-sectionalplasnes.whichpresenttheflowpatterncharacterizedbyupflowanddownflowalongtheaxialdirectionandadherentflowalongtheperipheraldirection,andtheheattransferrpocessfromthewalltothecenter,Furthermore,thetransientNusseltnumberandaveragetemperaturelevelareshownanddiscussed.Finally,theparametriceffectsofthetuberadiusandtheheatinputontheflowandheattransferarealsogiven.

  • 标签: 自然对流 热传导 主热管道
  • 简介:如今,术语管理的重要性日渐凸显,其对乒乓球杂志翻译的影响也十分重大。本文简要阐述了术语管理的定义以及乒乓球杂志中术语的特点,并且对TableTennisCollector杂志翻译项目中的术语提取、术语翻译、术语库建立以及术语库维护过程进行了剖析,同时以塔多思和语帆术语宝的使用为例,讨论了术语管理在乒乓球杂志翻译中的重要性。统一的术语翻译和高效的术语管理使翻译效率得到提升,译文整体的准确性也得到保障。

  • 标签: 术语管理 乒乓球杂志翻译 塔多思 语帆术语宝