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简介：OnSeptember25-26,2014,CIISandHooverInstitution,StanfordUniversityjointlyheldtheSecondSino-USMaritimeSecurityWorkshopinBeijing.CIISPresidentQuXingandAbrahamSofall,seniorresearchfellowwiththeHooverInstitution,codeliveredtheopeningremarks.RepresentativesfromChina'sMinistryofNationalDefense,

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简介：Becauseseismicactivitywithinmid-continentsisusuallymuchlowerthanthatalongplateboundaryzones,evensmallearthquakescancausewidespreadconcerns,especiallywhentheseeventsoccurinthesourceregionsofpreviouslargeearthquakes.However,thesesmallearthquakesmaybejustaftershocksthatcontinuefordecadesorevenlonger.TherecentseismicityintheTangshanregioninNorthChinaislikelyaftershocksofthe1976GreatTangshanearthquake.ThecurrentearthquakesequenceintheNewMadridseismiczoneincentralUnitedStates,whichincludesaclusterofM*7.0eventsin1811–1812andanumberofsimilareventsinthepastmillennium,isbelievedtoresultfromrecentfaultreactivationthatreleasespre-storedstrainenergyinthecrust.Ifso,thisearthquakesequenceissimilartoaftershocksinthattheratesofenergyreleaseshoulddecaywithtimeandthesequenceofearthquakeswilleventuallyend.WeusesimplephysicalanalysisandnumericalsimulationstoshowthatthecurrentsequenceoflargeearthquakesintheNewMadridfaultzoneislikelyendingorhasended.Recognizingthatmid-continentalearthquakeshavelongaftershocksequencesandcomplexspatiotemporaloccurrencesarecriticaltoimprovehazardassessments.

简介：<正>FromOctober14to23,2014,CAFIUsuccessfullyhostedthe1stChina-US-EuropeYoungLeadersExchangeProgram.TargetedatyoungleadersfromChina,theUSandEuropewithafocusonpolitical,economicandculturalexchanges,thisprogramhasselectedBeijingandGuangdongtomakefieldvisitsintheformsofthemedtalks,

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简介：摘要目的探讨喉癌的CT诊断价值。方法回顾性分析31例经病理证实为喉癌的CT资料，提高CT诊断价值，为临床治疗提供可靠依据。结果声门型18例、声门上型5例、声门下型2例、混合型（跨声门型）6例，CT可表现为波浪状、结节状、团块状、颈部淋巴结肿大、邻近结构受侵犯等。结论CT对判断喉癌的部位与侵犯程度有重要价值，但在诊断早期喉癌及邻近结构侵犯不明显时有一定的局限性。