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162 个结果
  • 简介:Canada'sHuskyEnergyInc.hasdiscoveredasignificantdeepwatergasreservewithitsChinesepartner,ChinaNationalOffshoreOilCorp.(CNOOC),intheSouthChinaSeanearHongKong.Basedonpreliminaryanalysisofdrillingresults,thediscoverycouldcontainapotentialrecoverableresourceoffourtosixtrillioncubicfeet(120billionto180billioncubicmeters)ofnaturalgas,theenergycompanysaidinastatement.'WeareverypleasedwithourexplorationresultsandthisdiscoveryconfirmsourconfidenceinthesignificantundiscoveredhydrocarbonpotentialintheSouthChinaSea,'JohnLau,HuskyCEOandpresidentsaid.'WelookforwardtoevaluatingthisdiscoveryandcontinuingourexplorationeffortsinChina.'

  • 标签: 中国海洋石油总公司 石油勘探 南海 深水作业
  • 简介:Thcrearecloseinnerlinksbetweenthetimeandspatialdistributionsofpolygeneticcompoundlarge/superlargeU-depositsanddiwatectonicinterfaces.ixwatectonicinterfacesaredividedintotwotypes,namely,oneinspaceandtheotherintimc.Thcfollowin8tcctonicintcrfacesallbclongtodiwaspatialtyPc:l)Gcotcctonicunconformityintcr

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  • 简介:HostedbyMinistryofCultureandGuangzhouMunicipalPeople'sGovernment,GuangzhouBureauofCultureorganizedalistoffirst-classsinginganddancingandacrobaticplaysinGuangzhouinSeptember2006.Amongtheseplays,largeoriginalacrobaticplayPilgrimagetotheWestofGuangzhouAcrobaticTroupewentonthestageduringOctober12thandNovember5th.

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  • 简介:Inthispaper,acomparisonamongthesevenlargemeandersoftheKuroshioismadeinordertoprobeintotheirsimilarityanddifferences.Themajorresultsaredescribedasfollows.1.Althoughthethreephasesforthesevenlargemeanderssuchastheirformations,maturity,aswellasdeclineareverysimilartooneanother,eachmeanderhasitsowntrivialdifferenceindetail.2.Thepathsofthefirstsixlargemeandersinthematurephasemaybeclassifiedintotentypes:U1,V1,U2,V2,U1’,V1’,U2’,V2’,φandW.3.Thesevenlargemeandersmaybegroupedintotwopatterns,i.e.,patternⅠandpatternⅡ.PatternⅠincludesthefirstandthefourthlargemeanders,andpatternⅡincludestherestoftheabovemeanders.4.FourstandardsforidentifyingthelargemeandersoftheKuroshioareputforward.

  • 标签: MATURE formations MATURITY identifying classified similarity
  • 简介:SYPHILIS1SCHARACTERIZEDbyseveralclinicalstages:primary,secondary,latentandtertiary.Duetothevarietyoflesionsthatmaypresentduringthesecondstage,syphilishasitsreputationofbeingthe"greatimpostor."Therefore,delaysinitsdiagnosisandtreatmentarecommonlyreported.

  • 标签: 梅毒 临床研究 病理周期 延误诊断 病例分析 实验室诊断
  • 简介:Sequentialsimulationoflargecomplexphysicalsystemsisoftenregardedasacomputationallyexpensivetask.Inordertospeed-upcomplexdiscrete-eventsimulations,theparadigmofParallelandDistributedDiscreteEventSimulation(PDES)hasbeenintroducedsincethelate70s.Inthispaperwe'llanalyzetheapplicabilityofPDEStothemodelingandanalysisoflargecomputersystem;suchsystemsareincreasinglycommonintheareaofHighEnergyandNuclearPhysics,becausemanymodernexperimentsmakeuseoflarge"computefarms",Somefeasibilitytestshavebeenperformedonaprototypedistributedsiumulator.

  • 标签: 核物理 计算机系统 分布模拟 复杂物理系统
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  • 简介:LargeProjectstoBeConstructedintheNext15 YearsTheNanning-KunmingElectricRailwayA898.7-kilometer-longrailwaylineapprovedforcons...

  • 标签: PROJECT
  • 简介:Thecoolingandheatingloaddistributionoflargeareaair-conditionedroomsuchas'open'offices,shoppingmallsandwaitingroomsisusuallyassumedtobeeveninairconditioningsystemdesign.However,itisnotthecaseinreality,andalowefficientairconditioningsystemresultsfromthisassumption.AsimulationandanalysisofthecoolingloaddistributionofanofficebuildinginHongKongwithTRANSYSsoftwareisprovidedinthispaper.Atypicalofficeisdividedinto13zonesforsimulation,includingexternalzone,medialzoneandinternalzoneinthenorth,thesouth,theeastandthewestrespectivelyandacentralzone,insteadof4directionalzone.Theresultshowsthereismuchcoolingloaddifferencebetweeneachzone,andmoreattentionshouldbepaidtounevenindoorcoolingandheatingloaddistributiontofurtherguidethedesign.

  • 标签: 空气调节系统 仿真分析 办公大楼 香港 TRANSYS 冷负荷分布
  • 简介:TheresultsofBryeonlargedeviationsforempiricalmeasuresofstationaryφ-mixingsequencesareextended.Bryestateshisresultsintheusualweaktopologyonthespaceofprobabilitymeasures.Inthispaper,undersomewhatweakerassumptionsthanthoseofBryc,theauthorextendsBrye'sresultsbytakingthefinertopologywhichisgeneratedbytheintegralsoverboundedmeasurablefunctions.

  • 标签: 大偏差 经验测量 平稳序列 Φ-混合 γ-拓扑
  • 简介:Aclassoflarge-sealesystems,wheretheoverallobjectivefunctionisanonlinearfunctionofperformanceindexofeachsubsystem,isinvestigatedinthispaper.Thistypeoflarge-scalecontrolproblemisnon-separableinthesenseofconventionalhierarchicalcontrol.Hierarchicalcontrolisextendedinthepapertolarge-scalenon-separablecontrolproblems,wheremultiobjectiveoptimizationisusedasseparationstrategy.Thelarge-scalenon-separablecontrolproblemisembedded,under;ertainconditions,intoafamilyoftheweightedLagrangianformulation.TheweightedLagrangianformulationisseparablewithrespecttosubsystemsandcanbeeffectivelysolvedusingtheinteractionbalanceapproachatthetwolowerlevelsintheproposedthree-levelsolutionstructure.Atthethirdlevel,theweightingvectorfortheweightedLagrangianformulationisadjustediterativelytosearchtheoptimalweightingvectorwithwhichtheoptimaloftheoriginallarge-scalenon-separablecontrolproblemisobtained.Theoreticalbaseofthealgorithmisestablished.Simulationshowsthatthealgorithmiseffective.

  • 标签: LARGE-SCALE system HIERARCHICAL control MULTI-OBJECTIVE optimization.
  • 简介:Amodularflat-screenliquidcrystaltelevisiondisplayisdescribed.Thepictureelementsofthemodulesmaybeemissive,reflectiveortransmissive.Theflat-screenliquidcrystaltelevisionalsocomprisedofanelectricalcontrolcircuitcapableofcategorizingincomingtelevisionpicturesignalscorrespondingtothemodulesinthearrayanddirectingtheelectricalsignalstothedrivecircuitsofeachmoduleaccordingtotheportionofthetelevisionpicturetobereproducedbythepictureelementsofthatmodule.Thepictureelementsarepreferablyformedinalightmodulatingfilmcomposedofaliquidcrystaldispersioninapolymericbinder.Acolordisplaywasalsoproducedbyplacingapatternedred-green-bluefilteradjacenttheactivematrixsothateachpictureelementcouldalsobecoordinatedwiththecolorcomponentsofacolorvideosignal.

  • 标签: 驱动电路 平面显示器 图像处理 液晶显示器 图像元素
  • 简介:1.IntroductionOneofthemostimportanttasksofmodernastronomyistoprobetheveryearlyuniverse.AccordingtothestandardBigBangtheory,primordialmatterconsistedofabout76%hydrogenand24%heliumbyweight,alongwithtracequantitiesofdeuteriumandlithium.Someofthisprimordialgaseventuallycooledenoughtocondenseintostars,andultimatelyformedgalaxies.Otherelements,suchascarbonandiron,areassumedtohavebeencreatedmuchlaterastheresultofstarformation.Theintergalacticmedium(IGM)islikelytocontainmorebaryonicmatterthanallthematter...

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  • 简介:LargescalecharacteristicdistancebetwenstrongearthquakeXIANFUDU(杜先富)SHAOXIEXU(许绍燮)InstituteofGeophysics,StateSeismologicalB...

  • 标签: SEISMIC CHARACTERISTIC DISTANCE deep EARTHQUAKE strong
  • 简介:Volcaniceruptionisanimportantexternalforcingfactorofclimatechangeontimescalefrommonthtohundredyears.Inthispaper,theclimaticeffectofthelastlargehistoricaleruptionofTianchivolcano,whichhappenedin1229AD,hasbeeninvestigatedwithatwo-dimensionalenergybalancemodel.TakingMt.PinatubovolcanoandChangbaiMountain-Tianchivolcanoforexample,thenumericalsimulationontimescalefrommonthstoyearsindicatesthatsuchlargeeruptionsmayhavesignificantimpactsonglobalclimate.Basedonthesimulationresults,itissuggestedthatthelastlargeeruptionofTianchivolcanoshouldberesponsiblefortheabruptclimatechangeevent,whichbeganintheperiodfrom1230to1260AD.

  • 标签: TIANCHI VOLCANO CLIMATE change simulation energy