简介：ＳｔｕｄｙｏｎｔｈｅＴｈｅｒｍａｌｉｎｔｅｒｎａｌＢｏｕｎｄａｒｙＬａｙｅｒａｎｄＤｉｓｐｅｒｓｉｏｎｏｆＡｉｒＰｏｌｌｕｔａｎｔｉｎＣｏａｓｔａｌＡｒｅａｂｙＮｕｍｅｒｉｃａｌＳｉｍｕｌａｔｉｏｎ￥ＪｉａｎｇＷｅｉｍｅｉ（蒋维楣）ａｎｄＹｕＨｏｎｇ...

简介：Thispaperintegratesgeneticalgorithmandneuralnetworktechniquestobuildnewtemporalpredictinganalysistoolsforgeographicinformationsystem(GIS).ThesenewGIStoolscanbereadilyappliedinapracticalandappropriatemannerinspatialandtemporalresearchtopatchthegapsinGISdataminingandknowledgediscoveryfunctions.ThespecificachievementhereistheintegrationofrelatedartificialintelligenttechnologiesintoGISsoftwaretoestablishaconceptualspatialandtemporalanalysisframework.And,byusingthisframeworktodevelopanartificialintelligentspatialandtemporalinformationanalyst(ASIA)systemwhichthenisfullyutilizedintheexistingGISpackage.Thisstudyofairpollutantsforecastingprovidesageographicalpracticalcasetoprovetherationalizationandjustnessoftheconceptualtemporalanalysisframework.

简介：Forwaterandsoilconservationandwaterpollutioncontrol,itisveryimportanttosimulateandpredicttheloadofsedimentandpollutantduringstorm-runoff.Onthebasisofanalyzingthesimultaneousmeasurementsofflow,sedimentandpollutantsobservedatwatershedoutlet,apracticalsedimentyieldmodelisdevelopedbystandardizingtheloadrate.Theresultsshowthatthestandardizedpollutantyieldequalseffectiverainfallandtheprocessofeffectiveloadyieldisthesameaseffectiverainfallhyetograph.Comparisonwithmeasureddatashowthatthismodelisapplicabletovariouspollutants.

简介：Athree-dimensionalnumericalmodel,EFDC(environmentalfluiddynamicscode)isappliedtothePamlicoRiverEstuary(PRE)ineasternNorthCarolinaoftheUnitedStatestoexaminethewindimpactonpollutantagedistributionsandresidencetime.Aseriesofmodelexperimentsrepresentingbasecase,remote-wind-inducedwaterlevelset-upandlocalwindscasesareconducted.ModelresultsindicatethatthepollutantmeanageandthesystemresidencetimearefunctionsofgravitationalcirculationinthePRE.Thesystemresponsestoremote-wind-inducedwaterlevelset-uparedifferentindifferentportionsofthePRE.Undersuchcondition,dissolvedsubstancesintheupstreamportionofthePREhaveayoungerageandshorterresidencetime(comparedwiththebasecase),bycontrast,theyhaveaolderageandlongerresidencetimeinthedownstreamportionofthePRE.Upriveranddownriverlocalwindsappeartohaveoppositeimpactsonpollutantagedistributions.ThesubstancesareretainedmuchlongerwithinthePREunderupriverwindthanthoseunderdownriverwind.Themodelresultsalsosuggestthatacross-riverwindsmayleadtolongerresidencetimethroughenhancedturbulencemixing,whichslowsdownthegravitationalcirculationinthePRE.

简介：第四章解疑涂桦为了验证高冷轩的真实身份，上专业网站查询到验证AIR的方法：至今为止，AIR还无法使用有强辐射的东西，因为使用强辐射的东西时他们会爆炸。

简介：Dropshaftsareverticalstructureswidelyusedinurbandrainagesystemsandbuildingsforwatertransportation.Inthispaper,aphysicalmodelstudywasconductedtoinvestigatetheairentrainmentinthedropshaftundervariousflowregimeswithandwithoutairventilation.Observedfromtheexperiments,theairentrainmentmechanismsvariedwiththewaterflowregimesinthedropshaft.Whentherewasnowaterplugformedinthedropshaft,aircouldbesupplieddirectlyfromdownstream.Oncethewaterplugwasformed,whilewithoutventing,theairwasreplenishedonlyfromdownstreamintermittentlyandthenintheformoflargeairbubbletravelingupwardstotheairspaceatthetop;whilewithventing,airwasmainlyreplenishedfromthedropshafttopandnolargeairbubblewasobserved.Theexperimentalresultsalsoshowedthattheamountofentrainedairinthedropshaftwithventingwasgreaterthanthatwithoutventing.

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简介：-Acombinednumericalmodelforcomputingmixingareasofpollutionverticaljetdischargingintotidalflowshasbeendeveloped.Thisnumericalmodeliscomposedofa2-Ddepth-averageddynamicfar-fieldnumericalmodelanda2-Dverticaldynamicnear-fieldnumericalmodel.Theformerusesfinitenodemethodtocomputevelocity,andimprovedfinitenodemethodtocomputepollutantconcentrationdistribution;thelatterisak-eturbulencemodel,andusesSIMPLE(Semi-ImplicitMethodforPressureLinkedEquations)methodtocomputevelocity.Atthesametime,theformerprovidesboundaryconditionsforthelatter.Thismodelcansimulatebothfar-fieldpollutantconcentrationdistributionandnear-fieldverticalrecirculationquicklyandprecisely.ThismodelhasbeenverifiedbymeasureddataofpollutantFoftheDachangreachoftheChangjingRiverandtestdatapresentedbyChenelal.(1992).Onthebasisofverification,theauthorsuseadesignedhydrographtocomputethismixingareaforacer

简介：<正>球鞋配置前后分离式ZOOMAIR,中底碳板撑托,鞋身轻量化,全内靴,完全是顶级配置中的顶级了。脚踝保护性9分,外踝底内踝高,既减轻了重量和阻碍,又保证了脚踝的安全。减震性9.8分,zoom!还是zoom,即使使用的是较薄的气垫,仍然给人很踏实的感觉。包裹舒适度9.5分,看似空间较窄,但实际上还是可以的,并没有夹脚的感觉,和12成鲜明对比。

简介：<正>AirJordanⅩⅢ代表了乔丹篮球生涯的巅峰,巅峰的意义就是所有乔丹迷的一个美妙的记忆,但是我们也不得不说在这以后,乔丹和公牛队最辉煌的历史画上了一个句号。就算这个句号是非常完美的,但是让人感觉还是非常的遗憾。第六届总冠军的庆功宴上,全体公牛队总共签了六双鞋来代(?)总冠军,其中五双相继

简介：WENXiangcaiisonthestaffofChinaNationalEnvironmentalMonitoringCenter.Herjobiscollectingandaggregatingdata,whichisgreatforher-she’sascientist.ButinrecentyearsWenfeelslikeshe’sturnedintosomethingofamediapersonality.Sheisaskedquestionsonavarietyoftopicswhensheattendsconferences,andsheisofteninterviewedbyjournalistsforherexpertopinion.AsenvironmentalconsciousnesshasgrowninChinaoverthepastfewyears,moreandmorepeoplewanttoknow

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简介：Inthispaper,theauthorusessuper-efficiencyDEAmodeltomeasurethenationalandregionalenergyefficiencyinChina;usingspatialeconometricmodelandfromtheperspectiveofgeo-spatialspillover,theauthorinterpretsthespatialcharacteristicsofenergyefficiencyandextractsthemainfactorsthatinfluencetheregionalenergyefficiency.Theanalysisresultsshowthat:(1)thenationalandregionalenergyefficiencyisconsistentwithinvertedU-shapedcurve,andthenationwideenergyefficiencygapisincreasing;(2)energyefficiencyhastheobviouseffectofthespatialexternaleffect,andwhenthegovernmentmakesenergysavingstrategies,inter-regionalenergycooperationandtheproliferationofadvancedproductiontechnologyshouldbegivenmorepriority;(3)energyefficiencyhassignificantnegativecorrelationwithgovernmentintervention,industrialstructure,ownershipstructure,theenergyconsumptionstructure,andresourceendowments,andhaspositivecorrelationwiththedegreeofopening-upandenergyprice.

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简介：Opticalemissionspectroscopy(OES)wasappliedforplasmacharacterizationduringtheerosionofasphaltenesubstrates.Anamountof100mgofasphaltenewascarefullyappliedtoanelectrodeandexposedtoair-plasmaglowdischargeatapressureof1.0Torr.Theplasmawasgeneratedinastainlesssteeldischargechamberbyanacgeneratoratafrequencyof60Hz,outputpowerof50Wandagasflowrateof1.8L/min.Theelectrontemperatureandiondensitywereestimatedtobe2.15±0.11eVand(1.24±0.05)×1016m-3,respectively,usingadoubleLangmuirprobe.OESwasemployedtoobservetheemissionfromtheasphalteneexposedtoairplasma.BothmolecularbandemissionfromN2,N+2,OH,CH,NH,O2aswellasCN,andatomiclightemissionfromVandHγwereobservedandusedtomonitortheevolutionofasphalteneerosion.Theasphalteneerosionwasanalyzedwiththeaidofascanningelectronmicroscope(SEM)equippedwithanenergydispersiveX-ray(EDX)detector.TheEDXanalysisshowedthatthetimeevolutionofelementsC,O,SandVweresimilar;andthechemicalcompositionoftheexposedasphaltenesremainedconstant.Particlesizeevolutionwasmeasured,showingamaximumsizeof2307μmafter60min.Thisbehaviorismostlikelyrelatedtoparticleagglomerationasafunctionoftime.