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1.
Heateffectoccursinmanyphysicalandchemicalreactionprocessesinnature .Measuringtheheataccuratelyinviewofenergyisafundamentaltoolforstudyingphysicalandchemicalreactionsystem .Calorimeterisadirectapproachtoheatmea surements.Basedonthis ,wecanexplorematerialt…  相似文献   

2.
INTRODUCTIONDow (1994)stated ,“Ifweknewwheretheoilscamefromandhowtheymigrated ,wecouldbetterpredictwheretheywouldbefoundinthefuture .”Thisstatementhighlightstwoimportantaspects,thesourceofoilsandthemigrationofoils.Secondarymigrationisthemovementofpetroleumb…  相似文献   

3.
INTRODUCTIONInternet,aglobalnetworkofcomputersconnectedthroughcommunicationdevices,providesGISusersanaccesstoremotegeographicdata .Theweb basedGIS ,akindofinternet basedGIStoolfortheaccesstoremotegeographicinformation ,ispro posedinthispaper.Nowadays ,thewe…  相似文献   

4.
IntroductionSinceearthquakeoccurrence,theyhaveprovidedgoodopportunitiesfordiscoveringtheundergrounmysteryandrecognizingearthquakes—thenaturephenomenon.Alargeearthquake’soccurrence,ofcourse,willbringhumankindwithlargedisaster.Withrecognizantenhance,wecan…  相似文献   

5.
INTRODUCTIONAmodelmethod ,createdinthescientificresearch ,isusedtorepresentanobject.Suchamodelismodifiedandimprovedinor dertoapproacharealresearchobject.Thiskindofmodel,widelyandeffectivelyusedinthepresentresearchintoacomplexsystem ,mayhelpustodescribeand…  相似文献   

6.
Fractal Correction of Well Logging Curves   总被引:6,自引:0,他引:6  
INTRODUCTIONBecausewellloggingmeasurementsgiveanaverageresultsnearbyconcurrentdepthpointsoftheprobesasshowninFig .1a ,wellloggingcurvedoesnotsupplytherealgeophysicalpropertiesatconcurrentdepthbutadisturbedresultofadjacentlayersandboreholeenvironment .Ho…  相似文献   

7.
INTRODUCTIONThepresenceofmagneticanomaliesoveroilandgasfieldshasbeenknownforseveraldecades,butitisonlyinrecentyearsthatthephenomenonhasbeencriticallyinvestigated .Themag neticcharacteristicsofsoilandsedimentarecloselyrelatedtosomegeochemicalprocesses,s…  相似文献   

8.
INTRODUCTIONTheconstructionaccidentsaredifferentfromeachotherintermsofcharacters,forms,componentlocationsandtheirinflu encesonconstructionfunction ,especiallysafety .Thequalityaccidentofconstructionengineeringwilldogreatdamage ,suchascrack ,greatdeflectio…  相似文献   

9.
1IntroductionWiththerapiddevelopmentofhumansociety ,industrializationhasbeenspeededup .Asaresult,metalminingandmetallurgy ,coalandgasolinecombustionandchemicalsproductionhavegivenoffalotofPb containingindustrialpollutantswhichhavedonegreatharmtotheecolog…  相似文献   

10.
Association Rule Discovery and Its Applications   总被引:1,自引:0,他引:1  
INTRODUCTIONDataminingorknowledgediscoveryindatabase (KDD)hasinrecentyearsattractedalotofinterestinthedatabasecommunity .Theinterestismotivatedbythelargeamountofcomputerizeddatathatmanyorganizationsnowhavetheirbusi ness .Forinstance,supermarketsstoreelec…  相似文献   

11.
Madeupofwaterandmethane,gashydratesareice likeclathratecompoundsthatformedintheconditionsoflowtempera ture (0 - 10℃ )andhighpressure (>10MPa) (MaxandDillon ,1998) .Generallyspeaking,theyarealsocalledmethanehydratesbecausemethaneisadominantcomposition .Besidesmethane,…  相似文献   

12.
Meter scalecyclicsequences,similartometer scalecyclesdefinedbyAndersonandGoodwin (1990 ) ,refertofundamen talunitsofstratigraphicaccumulationthatcouldbediscerneddirectlyinoutcrop .Asthefundamentalworkingunitsinstrati graphicrecords,meter scalecyclicsequencesr…  相似文献   

13.
Geographicinformationsystem ,GIS ,capableofcollecting ,managingandgeneratingvariousspatialinformation ,isappliedtospatialanalysis ,multi factorcomprehensiveanalysis,dynamicpredictionandgenerationofhigh levelgeographicinformation .Inaddition ,GISisalsocapable…  相似文献   

14.
Preface     
TheInternationalSymposiumontheGSSPofthePermian TriassicBoundaryandthePaleozoic MesozoicEventswasheldinChangxingCounty ,ZhejiangProvince,ChinaonAugust 1 0 - 1 3,2 0 0 1 .Thesymposiumreceivedand printed 47abstracts.About 60geologistsfrom 1 3countriesattendedthescientifi…  相似文献   

15.
INTRODUCTIONLaserablationinductivelycoupledplasmamassspectrome tryisanincreasinglydevelopedanalyticaltechniqueforsolidsampleanalysis.LA ICP MSoffersattractivecharacteristicsofhighsensitivity ,lowdetectionlimits,minimalsampleprepara tion ,lessoxidesinterfe…  相似文献   

16.
INTRODUCTIONThequantitativereconstructionofpaleoclimatefactorsisthefocusofstudyonenvironmentinthepast ,andanef fectivetoolforthequantitativeresearchintothepaleocli mateisthetransformationofspore pollendata .ThemainperiodthusinvolvedwastheQuaternaryinste…  相似文献   

17.
Thisissue ,“OpenLaboratoryofQuantitativePredictionandExplorationAssessmentofMineralResources” ,isaspecialcollectiondedicatedtothe 70thbirthdayand 49thteachinganniversaryofAcademicianZhaoPengda .AcademicianZhaoheadsthestatekeydiscipline“prospectingandexplor…  相似文献   

18.
INTRODUCTIONGroundwaterorfluidflowmodelinginfracturedrocksisacomplicatedtheoreticalandappliedtopic.Boththeoreticallyandoperationally ,itisimportantinmanyfieldssuchasgeologicalandhydrogeologicalengineering ,environmentalengineeringandpetroleumengineerin…  相似文献   

19.
ANENIGMA :EXTINCTIONOFDINOSAURThestratarecordthehistoryoftheearth .Everyscalecatas trophiceventallkeptsometraceinthestratum .Manyenigmascanberevealedthroughthecharactersofstrataandthefossilsinthestrata .TheextinctionofdinosaurisoneenigmahappenedintheCret…  相似文献   

20.
No .1EarlyPermianRadiolariansfromBabuOphioliticM啨langeinSoutheasternYunnan .FengQinglai,LiuBenpei.2 7(1) :1- 3.TheEarlyPermianradiolarianswerefoundfromthechertoftheBabuophioliticm啨langeinsoutheasternYunnan .ThisradiolarianassemblageincludesPseu doalbaillellasca…  相似文献   

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