简介:ChinaisplayingacrucialroleintheObamaadministration'sattempttobuilda'multi-partnerworld'basedoncooperationandsharedresponsibilities.Inlightoftheprofoundgeo-economictransformationsof2008-2009,theUnitedStateshaslittlechoicebuttostriveforpartnership,especiallywiththecountrythatisWashington'smajorcreditor.Obama'sforeignpolicyapproach,however,goesbeyondamerepragmaticadaptationtothenewrealitiesandconstitutesauniquewindowofopportunityfortheestablishmentofanunprecedentedlevelofU.S.-Chinacooperation.FromaEuropeanperspective,thepositiveevolutioninU.S.-Chinacooperationhasbeenwelcomedasakeycontributiontotheresolutionoftheglobalproblemsconfrontingtheplanet.TheEuropeanUnionhasneverthelessreactedwithapprehensiontothesuggestionsbyAmericancommentatorsforthecreationofaU.S.-China'G-2'.ThatissuewasdiscussedattheEU-ChinaSummitunderlinestheseriousnessoftheproposalandserves,initself,asasignificantindicatorofthegreattransformationofintemationalrelationscharacterizingtheyears2008-2009.
简介:U-shapedmicro-nanochannelscangeneratesignificantflowdisturbanceaswellaslocallyamplifiedelectricfield,whichgivesitselfpotentialtobemicrofluidicmixers,electrokineticpumps,andevencelllysisprocess.NumericalsimulationisutilizedinthisworktostudythehiddencharacteristicsoftheU-shapedmicro-nanochannelsystem,andtheeffectsofkeycontrollingparameters(theexternalvoltageandpressure)onthedeviceoutputmetrics(current,maximumvaluesofelectricfield,shearstressandflowvelocity)wereevaluated.Alargeportionofcurrentflowingthroughthewholesystemgoesthroughthenanochannels,ratherthanthemiddlepartofthemicrochannel,withitsvalueincreasinglinearlywiththeincreaseofvoltage.Duetothelocaliondepletionnearmicro-nanofluidicjunction,significantlyenhancedelectricfield(asmuchas15foldatV=1VandP0=0)aswellasstrongshearstress(leadingtoelectrokineticflow)isgenerated.Withincreasingexternalpressure,bothelectricfieldandshearstresscanbeincreasedinitially(duetoshorteningofdepletionregionlength),butaresuppressedeventuallyathigherpressureduetothedestructionofiondepletionlayer.Insightsgainedfromthisstudycouldbeusefulfordesigningnonlinearelectrokineticpumpsandothersystems.
简介:<正>华硕VW195U具有动态2000:1对比度、灰阶2ms的快速响应时间、Splendid靓彩技术、内置高保真多媒体音箱系统、提供了DVI数字接口且支持HDCP协议,性能优秀。VW195U参数■型号:VW195U■尺寸:19英寸■面板类型:TN■屏幕比例:16:10■显示色彩:16.7M■亮度:300cd/m~2■对比度:2000:1(动态)■最佳分辨率:1440×900■响应时间:2ms■水平可视角度:160°■垂直可视角度:160°■接口:D-Sub,DVI■重量:3.9Kg■安规认证:TCO′03,RoHS
简介:CHINAistheonlyoneoftheworld'sthreelarg-esteconomiesinwhichasignificantnumberofitsmostimportantcompaniesarelistedonsharemarketsoutsidedirectregulatorycontroloftheirhomecountry'smainfinancialadministration.AlmostallmajorU.S.companiesarelistedintheU.S.ThesameappliesinJapan.ButmanyChinesecompa-niesarelistedinHongKong,partofChinabutwithseparateregulationandcapitalmarketsfromChina'smainlandeeonomy.FurthermoreasignificantnumberofChinesecompaniesarelistedinLondonandtheU.S.
简介:InordertodevelopChina-U.S.relations,wemustenhancestrategicmutualtrust.Butthestrengtheningofmutualtrustcannotbeachievedovernight.Besides,duetodifferencesinhistory,nationalinterestsanddevelopmentstrategy,theleveloftrustthatthetwocountriescanreachislimited.Then,underthepremisethatstrategicdifferencesexistbetweenChinaandthe