简介:Today,themajoractivitiesininternationaltrade,investment,transnationalcorporationbusinessandhightechniquehappeninandbetweenNorthAmerica,EuropeandEastAsia.Thisemerging"NewTriangle"becomesquiteaphenomenonincurrentinternationalrelations.Withthisasthebackground,whatkindoftheorywillEuropeanregionalismadopt?Whataretheproblemsandchallengesonitstargetandprinciple?Moreover,whatinfluencesitmighthaveto"theNewTriangle"?Thesearetheproblemstowhichtheauthortriestofindanswersinthispaper.
简介:<正>3倍光学变焦的500万像素摄像头人脸识别功能宽动态范围优化优点:高档金属材质搭配时尚滑盖设计;拍摄功能强大。弱点:机身比较厚;摄像头没有自拍镜。技术参数网络:四频(GPRS/EDGE,850/900/1800/1900MHz)尺寸:101.5×52×18.8mm重量:129g屏幕:2.4英寸QVGA26万色TFT屏摄像头:500万像素CMOS/氙气闪光灯/3倍光学变焦/连拍铃声:录音铃声/MP3/64和弦电话薄:1000组/来电黑名单10个短信:机身200条/群发20条音频格式:MP3、AAC、AAC+、AAC++、WMA视频格式:3GP、MP4文本浏览:PDF/WORD/EXCEL/PPT/TXT蓝牙:蓝牙v2.0,A2DP蓝牙立体声,蓝牙Pictbridge打印功能USB:2.0WAP:2.0存储卡:microSD,最大支持2GB电池:1000mAh续航:通话时间3.5小时/待机时间250小时
简介:Duetoitsmajorroleinmaintainingthewater-retainingpropertiesoftheepidermis,ceramideisofgreatcommercialpotentialincosmeticsandpharmaceuticalssuchashairandskincareproducts.However,currentsyntheticapproachesforceramidearetediousandtime-consumingforindustrialapplications.Therefore,itisdesirabletofindanalternativecost-efficientandhighly-yieldmethodforobtainingthevaluableproducts.Inpresentstudy,thepotentialofproducingceramidethroughenzymatichydrolysisofsphingomyelinwithenzymeirradiatedby808nmlighthasbeenstudied.Withenzymeirradiatedby808nmlight,itsactivitycanbeenhancedandreactionspeedcanbeincreasedsignificantly.
简介:Howtocontrolmeltcompositionisthekeyforgettinghighqualityalloymelt.Thepapermadethefollowingefforts:(1)TheactivitycoefficientsinTi-15-3melthavebeencalculated.(2)Takingadvantageoftheactivitycoefficients,theevaporationlossesofcomponentsinTi-15-3meltduringISMprocesshavebeenstudied.Thecalculatedresultsshowthatthereisacriticalvacuumdegree(about1.33Pa)duringmeltingprocess.
简介:TheISMbandat2.4GHzhasmostlybeenusedorplannedforindoorsystems.Thisbandisalsoattractiveforoutdoorsystemsowingtotheeaseofthesystemdeployment,asnofrequencylicensesarerequired.Inthispaper,amultiplesuccessiveinternalmultireflectionmodelisusedtoestimatethecomplexelectricpermittivityat2.4GHzband.Toobtainthedata,measurementsareperformedat160MHzbandwidthcenteredabout2.4GHzusingavectornetworkanalyzer,whichprovidesinformationabouttheamplitudeandphaseoftransmissioncoefficient.Severalsamplesofeachmaterialaremeasuredandtheresultsvaryfromsampletosample.Ithasalsobeenfoundthatsomeobstacleshavepolarizationbehaviour.