简介:水库沉积在全世界是一个成长问题。因此,水库desiltation上的存在文学系统地被检验了并且评估。评论被划分成处理水库desiltation的不同方面的三个话题。第一个话题对待不同水力的水库挖除淤泥技术。力量被放在到来的沉积的已经扔的沉积和路由涌出从上在上游通过一座水库,而是其他的方法,例如通过灵活管子搬运沉积并且吸,也被描述。第二个话题在水力的水库涌出以后对待产生水库地形学。这由于涌出,而且可得到的文学在上在地形学包括代表性、纵的变化物理并且分析模型。第三个话题对待下游的geomorphological和sedimentological效果在期间并且在冲洗操作的水库以后。注意被给浇流动--,沉积集中--,并且免职模式,以及搬运并且扔的沉积特征。
简介:ThenewmonographyO-ustobodyGeotectonicsofAsianContinentandAdjacentSeaswrit-tenbyAcad.ChenGuodaetal.systematicallydiscussesandanalyzestheevolutionandmovementofcrustobodiesofbroadandcomplicatedAsiancontinentandadjacentseas,ap-plyingthetheoryandmethodofhistoristic-causationistgeotectonicestablishedbyhim
简介:CrustobodyGeotectonicsofAsianContinentandAdjacentSeas,compiledbyAcademicianChenGuoda,HunanEducationPress,December1998,altogether322pages.(AcademicianGuoI,ingzhi,DepartmentofGeosciences,NanjingUniversity,Nanjing2lOO93)ThebookCrustobodyGeotectonicsofAsianContinentandAdjacentSeascompliedbyA-cademicianC
简介:1SURVEYOFGLOBALSEISMICITYIN2013Atotalof23strongearthquakeswithMS≥7.0occurredin2013throughouttheworldaccordingtotheChinaSeismicNetwork(Table1).ThestrongestearthquakewasintheSeaofOkhotsk,measuringMS8.2onMay24(Fig.1).Earthquakesoccurredmainlyinthewesternpartofthecircum-Pacificseismicbelt.Comparedwiththeseismicityin2012,thefrequencyincreasedsignificantlyandtheenergyreleaseofearthquakeswasobviouslylow.FeaturesofglobalseismicityofMS≥7.0areasfollows:
简介:1.SURVEYOFGLOBESEISMICITYIN2004Atotalof19strongearthquakeswithMs≥7.0occurredintheworldaccordingtotheChineseSeismicStationNetworkin2004(Table1).ThestrongestearthquakewastheSumatraearthquakewithMs8.7nearthenorthwestcoastofSumatraonDecember26(Fig.1).Globalseismicitymaintainsthesamepatternsfromrecentyears,beingdistributedmainlyonthewesternpartofthecircum-Pacificseismiczone.RemarkablemacroseismicactivitieswereseenintheIndia-AustralianplateandintheJapanregion.ThemacroseismicactivitiesofMs≥7.0in2004wereasfollows:
简介:MitralstenosisduetorheumaticheartdiseaseisnotcommonintheUnitedStatesbutiscommoninthedevelopingworldbecauserheumaticfeverisstilloccurringfrequently.Symptomsusuallygraduallyoccurintheyoungadult(mostcommonlyfemale).Atrialfibrillationisacommonaccompanyingrhythminpatientswithprovenmitralstenosis.Themainphysiologiceventisapressuregradientbetweentheleftatriumandtheleftventricle.DiagnosisisrelativelystraightforwardusingphysicalexamandsimplelaboratorystudiessuchasChestX-Ray(elevatedLeftmainstembronchus,DoubleDensityindicatingenlargedleftatrium)andECG(P-Mitrale).Cardiacultrasoundconfirmstheclinicaldiagnosis(Domingofmitralvalveindiastole,Hockeystickdeformityoftheanteriormitralvalveleaflet,largeleftatrium,Dopplerestimationofvalvegradient).Mitralcommisurotomy(surgicalorBalloon)iswarrantedifthevalveispliableandnotheavilycalcified.