简介:ApplicationofcertaintyfactorsofearthquakeprecursoryanomalyevidencesCF(E)ZHAO-BIZHENG(郑兆),JUNZHANG(张军)andMEIQING(庆梅)Seismolo...
简介:BecauseofthesignificancetotheformationandevolutionoftheTibetanplateau,thedisplacementandsliprateoftheAltynTaghfaulthavebeentopicsfullofdisputation.ScientistswhoholddifferentopinionsontheevolutionofTibetinsistondifferentslipratesanddisplacementsofthefaultzone.Inthearticle,studyisfocusedonthelateQuaternarysliprateoftheAltynTaghfaultwestoftheCherchenRiver(between85°Eand85°45'E).OnthebasisofhighresolutionSPOTimagesoftheregion,threesites,namelyKoramlik,AqqanpastureandDalakuansay,werechosenforfieldinvestigation.Tocalculatethesliprateofthefault,displacementofterraceswasmeasuredonSPOTsatelliteimagesorinsituduringfieldworkandthermo-luminescence(TL)datingmethodwasused.Togettheagesofterraces,samplesofsandwerecollectedfromtheuppermostsandbedsthatliejustunderloess.Themethodforcalculatingsliprateoffaultistodividethedisplacementofterracerisersbytheageofitsneighboringlowerterrace.Thedisplacementofriversisnotconsideredinthisarticlebecauseofitsuncertainties.AtKoramlik,thesliprateoftheAltynTaghfaultis11.6±2.6mm/asince6.02±0.47kaB.Pand9.6±2.6mm/asince15.76±1.19kaB.P.AtAqqanpasture,about30kmwestofKoramlik,thesliprateis12.1±1.9mm/asince2.06±0.16kaB.P.AtDalakuansayi,thesliprateofthefaultis12.2±3.0mm/asince4.91±0.39kaB.P.Hence,wegettheaveragesliprateof11.4±2.5mm/aforthewesternpartoftheAltynTaghFaultsinceHolocene.ThisresultisclosetothelatestresultsfromGPSresearch.
简介:本文提供了从1975年至今在北海采用的EOR技术的总结和指导原则。在北海已经采用的5项技术是注混相烃气、WAG、SWAG(水气同时交替注入)、FAWAG(泡沫辅助水气交替注入)和MEOR。用每项EOR技术的各自成熟程度或成熟期、技术应用限制以及在增油基础上的工艺效率,鉴定在北海已经采用的每种EOR技术。除了在Ekofisk油田进行的WAG和在SnorreCFB进行的FAWAG外,所有技术都在相应的油田获得了成功。认为注混相烃气和WAG在北海是成熟技术。在北海最普遍采用的技术是WAG并且被认为是最成功的EOR技术。出现的主要问题是注入能力(WAG、SWAG和FAWAG项目)、注入系统监测和油藏非均质性(注混相烃气、WAG、SAWAG、和FAWAG项目)。在报道的所有EOR技术矿场应用中,有约63%是在挪威大陆架进行的,有32%是在英国大陆架进行的,其余的是在丹麦大陆架进行的。Statoil是在北海进行EOR技术矿场应用的领先者。以后,大部分研究将集中在微生物工艺、注C02和WAG(包括SWAG)方面。在这次评述中没有考虑室内技术、世界统计、模拟工具和经济评价,因为这些方面超出了本文的范围。
简介:AtpresentE-commercesystemtendstobecomemorecomplex,andtraditionalsystemdesigningmethodscannotfufiltheneedofE-commercesystem,thusrequiringaneffectivemethodassolution.Withthisconcern,thispaperintroducessomeconceptsofcomponenttechnology,thenbringsforwardthenewconnotationandbasicfeaturesofcomponenttechnologythroughtheanalysisofitstechnologicalcharacter.ThispaperfinallydiscussestheapplicationofcomponenttechnologytoE-commercesystem.
简介:CertaintyfactorsofearthquakeprecursoryanomalyevidencesCF(E)Zhao-BiZHENG(郑兆)(SeismologicalBureauofAnhuiProvince,Hefei230031,Ch...
简介:Anovelautomaticseamlessstitchingmethodispresented.Comparedtothetraditionalmethod,itcanspeedtheprocessingandminimizetheutilizationofhumanresourcestoproducegloballunarmap.Meanwhile,anewglobalimagemapoftheMoonwithspatialresolutionof~120mhasbeencompletedbytheproposedmethodfromChang’E-1CCDimagedata.
简介:Radio-frequencyinterference(RFI)affectsgreatlythequalityofthedataandretrievalproductsfromspace-bornemicrowaveradiometry.AnalysisoftheAdvancedMicrowaveScanningRadiometerontheEarthObservingSystem(AMSR-E)AquasatelliteobservationsrevealsverystrongandwidespreadRFIcontam-inationsontheC-andX-banddata.Fortunately,thestrongandmoderateRFIsignalscanbeeasilyidentifiedusinganindexonobservedbrightnesstemperaturespectrum.ItistheweakRFIthatisdiffi-culttobeseparatedfromthenaturesurfaceemission.Inthisstudy,anewalgorithmisproposedforRFIdetectionandcorrection.Thesimulatedbrightnesstemperatureisusedasabackgroundsignal(B)andadepartureoftheobservationfromthebackground(O-B)isutilizedfordetectionofRFI.ItisfoundthattheO-Bdeparturecanresultfromeitheranaturalevent(e.g.,precipitationorflooding)oranRFIsignal.AseparationbetweenthenatureeventandRFIisfurtherrealizedbasedonthescatteringindex(SI).ApositiveSIindexandlowbrightnesstemperaturesathighfrequenciesindicateprecipitation.IntheRFIcorrection,arelationshipbetweenAMSR-Emeasurementsat10.65GHzandthoseat18.7or6.925GHzisfirstdevelopedusingtheAMSR-EtrainingdatasetsunderRFI-freeconditions.ContaminationofAMSR-Emeasurementsat10.65GHzisthenpredictedfromtheRFI-freemeasurementsat18.7or6.925GHzusingthisrelationship.ItisshownthatAMSR-EmeasurementswiththeRFI-correctionalgorithmhavebetteragreementwithsimulationsinavarietyofsurfaceconditions.
简介:Anewfairoff-lineelectroniccashschemeonellipticcurvecryptographywaspresented.Thenewschemeismoreefficientthanthosebyextendingfairoff-lineelectroniccashschemefromfinitefieldintoellipticcurvecryptographyandintroducinganewellipticcurvediscretelogarithmassumption.Theexpirydateanddenominationareembeddedintotheblindlysignedcoinbyintegratingpartiallyblindsignaturewithrestrictiveblindsignature.Abankneednotusedifferentpublickeysfordifferentcoinvalues,shopsandusersneednotcarryalistofbank'spublickeystoverifyintheirelectronicwallet.Atthesametime,thebankjustneedstokeepundueelectroniccoinsfordoublespendingcheckinhisdatabase,thusbank'sdatabasecanbedramaticallyreduced.
简介:用被动微波辐射计的陆地检索对在陆地亮度温度的小变化敏感。因此,无线电频率干扰(射频干扰)发信号发出从人造微波放射传输器能在陆地检索导致大错误。在隧道能遥远地污染的C乐队和X乐队的射频干扰察觉到大小,经历了与扫描辐射计(AMSR-E)和WindSat传感器的先进微波。在这个工作,射频干扰察觉的应用程序和在从AMSR-E大小使用检索地球物理的参数的一间全面套房的修正算法,一个维的变化检索(1-DVAR)方法被描述。结果显示检索参数的值例如陆地皮肤温度(LST),在射频干扰污染的这些区域上比从全球数据吸收系统(GDAS)的那些高得多产品。结果也显示新检索和GDAS产品之间的差别通过考虑RFI修正算法显然被减少。另外,1-DVAR的集中度量标准(2)被发现是为识别陆地检索被射频干扰影响的区域的一个新方法。例如在有强壮得多的射频干扰的那些区域,例如欧洲和日本,<啜class=“a-plus-plus”>1-DVAR的2那么大集中不能被到达,检索结果不能是可靠的或不能被获得。而且,<啜class=“a-plus-plus”>2也与中等或弱的射频干扰为那些区域与改正射频干扰的算法减少。射频干扰的结果检测了由<啜class=“a-plus-plus”>2与那些识别了由几乎一致光谱差别方法。
简介:摘要:跨电气化铁路拖拉施工的桥梁,为确保铁路运营安全,铁路局一般要求封锁要点施工。受封锁点时间的限制,临时支墩间距一般不会超过 16m。受既有铁路与桥梁夹角影响,本桥梁采用纵向拖拉法施工,拖拉长度 44.5m。本文对该桥施工技术进行了总结,为今后类似工程提供借鉴。