简介：Extractingrare-earthelementsfromcoalcouldsoonbeeconomicalinU.S.ExtractedfromthereportofUNIVERSITYPARK,Pa.TheU.S.couldsoondecreaseitsdependenceonimportingvaluablerare-earthelements,accordingtoateamofPennStateandU.S.DepartmentofEnergyresearcherswhofoundacost-effectiveandenvironmentallyfriendlywaytoextractthesemetalsfromcoalbyproducts.UsingbyproductsofcoalproductionfromtheNorthernAppalachianregionoftheU.S.,theteaminvestigatedwhetherachemicalprocesscalledionexchangecouldextractREEsinasafermannerthanotherextractionmethods.Resultsshowthationexchangeismoreenvironmentallyfriendlyandrequiresless

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简介：HighqualitynaturalmeteoriticmagnetsuccessfullyproducedinashorttimeSource:websiteofTohokuUniversityResearchersfromTohokuUniversityinJapanhavesucceededinproducingacompletelyrare-earthfreehigh-qualityFeNimagnet.Theteam,ledbyProfessorAkihiroMakinoasprincipalinvestigatorissupportedbyaMEXT(MinistryofEducation,Culture,Sports,ScienceandTechnology,Japan)projectentitled,"Ultra-low

简介：Square是Twitter的创始人之一JackDorsey新创立的一个项目，让人们可以利用智能手机进行信用卡支付。这项创新将极大地改变现有的交易方式。《新货币》一文带我们了解Square的方方面面。

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简介：Astrongdelegationof12membersheadedbyProf.Dr.lng.BrunoMueller,theVicePresidentandmem-beroftheBoardofthePowerTransmissionandDistributionGroupofSiemensAGcametoChinaonOct.23,1991torunseminarsonSiemenstechnology,introducingsystematicallythetrendsandstate-of-the-artpracticesinpowertransmissionanddistributionsystems.ThedelegationwasontheinvitationoftheDepartmentofIn-ternationalCooperationofMinistryofEnergyandChinaElectricity

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简介：WhenIopenedmye-mailtheotherday,ablond（白肤金发碧眼的）womannamedRachelappearedonmycomputerscreen.

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简介：Terahertzwaves,sittinginthegapbetweenthemiddleinfraredandmillimeterwaveregions,areknownasthelastvacantareaoftheelectromagneticspectrumthathasnotquitebeenunderstoodandbroughtintoapplications.TheTerahertzregionhasbeenthefocusofresearchworldwidesinceearly1990s.Duetotheiruniquecharacteristics,

简介：Terahertzwaves,sittinginthegapbetweenthemiddleinfraredandmillimeterwaveregions,areknownasthelastvacantareaoftheelectromagneticspectrumthathasnotquitebeenunderstoodandbroughtintoapplications.TheTerahertzregionhasbeenthefocusofresearchworldwidesinceearly1990s.Duetotheiruniquecharacteristics,

简介：Terahertzwaves,sittinginthegapbetweenthemiddleinfraredandmillimeterwaveregions,areknownasthelastvacantareaoftheelectromagneticspectrumthathasnotquitebeenunderstoodandbroughtintoapplications.TheTerahertzregionhasbeenthefocusofresearchworldwidesinceearly1990s.Duetotheiruniquecharacteristics,Terahertztechnologieshaveawiderangeofapplications,suchashazarddetection,highspeeddatacommunications,radioastronomy,andbiomedicalimaging.

简介：Terahertzwaves,sittinginthegapbetweenthemiddleinfraredandmillimeterwaveregions,areknownasthelasvacantareaoftheelectromagneticspectrumthathasnotquitebeenunderstoodandbroughtintoapplications.TheTerahertzregionhasbeenthefocusofresearchworldwidesinceearly1990s.DuetotheiruniquecharacteristicsTerahertztechnologieshaveawiderangeofapplications,suchashazarddetection,highspeeddatacommunications

简介：Terahertzwaves,sittinginthegapbetweenthemiddleinfraredandmillimeterwaveregions,areknownasthelastvacantareaoftheelectromagneticspectrumthathasnotquitebeenunderstoodandbroughtintoapplications.TheTerahertzregionhasbeenthefocusofresearchworldwidesinceearly1990s.Duetotheiruniquecharacteristics,

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简介：即时语音翻译可达到同声传译水平近几十年来，因为机器翻译质量的问题，机器翻译一直不入流。微软研究院展示了即时语音翻译系统的最新研究成果，该系统不仅可以达到即时语音识别、双语翻译，更牛的是可以做到即时发音，效果已经接近同声传译。

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