简介:Thisstudyinvestigatestheeffectivenessofthenon-smoothsemi-activecontrolalgorithmonsuppressingthevibrationperformanceofabuildingstructuresubjectedtoseismicwaves.AccordingtotheLyapunovstabilitytheory,ithasbeneproventhatthenon-smoothsemi-activecontrolalgorithmcanachieveafinite-timestabilityofthevibrationrelativetotheisolationlayerofabuildingstructure.Throughnumericalsimulationoftwobuildingswithdifferentparameterssubjectedtotheinputofaseismicwave,thevibrationconditionsofpassivecontrol,LQRsemi-activecontrolandnon-smoothsemiactivecontrolarecomparedandanalyzed.Thesimulationresultsshowthatthenon-smoothsemi-activecontrolalgorithmhasabetterrobustnessandeffectivenessinrestrainingtheimpactofearthquakesonthestructure.
简介:Takingatypicalactiveexport-orientedregionZhejiangasanexample,thispapertriestoevaluateitsCoordinatedDevelopmentDegree(CDD)form1997,focusingonthecharacteristicsofitsexport-orientedeconomyandregionalenvironment.TheresultsshowthatZhejiang'sCDDhaskeptincreasingsteadilyafteritsslightdropin1998.Finally,fourmeasurementsareproposedtopromotesustainabledevelopment,includingincreasingandequalizingregion'senvironmentalinvestment,changingpollution-intensiveexportstructuretoavoidrestrictingthewholeindustrialstructure,restrictingsimplespatialtranslocationofhigh-materialconsumption,high-energyconsumptionandhigh-pollutionindustries,etc.
简介:Thisstudyrevealspreliminarilytheearthquakebehaviorofvariablerupture-scaleonactivefaultsoftheChinesemainland,thatisthatonanindividualfaultportionearthquake¢srupture-scalevariescycletocycle,andhenceearthquake¢sstrengthchangeswithtime.Thetendencyofthisvariationhasnonecessity.Ondefiningrelativesizeofrupturescales,astatisticalresultshowsthatitisofthelowestprobabilitythatruptureswiththesamescaleoccurintwosuccessivecycles.Whiletherupture¢sscaleintheprecedingcycleis2small2,theprobabilityofthefollow-ingrupture¢sscalebeing2large2isasmanyas0.48.Whiletherupture¢sscaleintheprecedingcycleis2middle2,theprobabilityofthesucceedingrupturebeing2small2or2large2scaleis0.69or0.25.Whiletherupture¢sscaleintheprecedingcycleis2large2,theprobabilitymustbezeroforthefollowingrupturewith2large2scale,andis0.36or0.64forthefollowingrupturewith2small2or2middle2scale.Theauthorintroducesandimprovesthecascade-rupturingmodel,andusesittodescribethevariabilityandcomplexityofrupturescaleonindividualfaultportions.Basicfeaturesofsomeactivestrike-slipfaultsonwhichcascaderuptureshaveoccurredaresummarized.Basingonthesefeaturestheauthorproposesprinciplesofcascade-rupturesegmentationforthistypeoffaults.Asanex-ampletoapplication,theauthorsegmentsoneportionoftheAnninghefaultzone,westernSichuan,foritsfuturecascaderupture,andfurtherassessestheprobablestrengthanditscorrespondingprobabilityofthecomingearth-quake.
简介:由通过卷索引(LRI)的叶的介绍用有效的叶区域索引(ELAI)代替叶区域索引(LAI),相片的分布在三混合米饭联合的华盖的综合地活跃的放射(同等),有高LRI的LiangyouE32,有中等LRI的Liangyoupeijiu和有非滚动的叶子(正常)的Shanyou63,被模仿。模型能基于LAI比那精确地基于ELAI预言更多。在三联合的同等拦截,变换和利用效率被学习评估他们的最佳的LRI和LAI。LiangyouE32的同等利用效率由于过多的滚动叶子和更少的ELAI是更低的,并且因为有缺点的同等拦截和更低的光合的率和浸透点,Shanyou63的在在华盖的更低的层也是更低的。与上述二联合相比,Liangyoupeijiu在华盖,和更高的同等利用效率显示出同等拦截和变换效率的更适当的分发。分别地,为Liangyoupeijiu的最佳的LRI和LAI是0.11和7.6它接近了观察价值,0.11和7.9分别地。然而,最佳LAI为LiangyouE32是9.8并且6.2为Shanyou63,比那些在当前的植物密度下面更大或小,它导致了同等利用的更低的效率。而且,分别地,为LiangyouE32和Shanyou63的最佳LRI是0.12和0.08它为Liangyoupeijiu(0.11)接近了实际LRI。
简介:Seismicruptureproducedbyactivefaultingcausesgroundsurfacefracturingandseriouslydamagesbuildings.However,thefracturetracesareusuallyindistinctornon-visiblebecauseofcomplicateddeformationsinQuaternaryunconsolidatedmaterials,sotheirupperpartscanhardlybediscoveredonexploratorytrenches.Theaimofthispaperistostudythetypesoffaultruptureanddisplacementindifferentloosedepositbedsfromajointviewofmega-,meso-,andmicroscopicscales,andtofindthemarkandmethodfortimingthepalaeoseismicruptureonexploratorytrenches.
简介:<正>Intheeraofmultipolarizationandeconomicglobalization,millionsofNGOsarethrivingworldwideandplayingagreatroleinthefieldsofenvironmentprotection,povertyalleviation,charityandmedicalservice.Theyhaveformeda
简介:Zeolite-CatalyzedFriedel-CraftsAcylation ofAromatics.Ⅳ.NatureoftheActiveSitesofZeolitesZeolite-CatalyzedFriedel-CraftsAcylati...
简介:TwospeciesofN-arylpyrazolescontainingactiveaminogroupweresynthesized.AndformylationsofN-arylpyazolescontainingaminoindifferentpositionofpyrazoleringsusingVilsmeier-Haackreactiongaveaseriesofusefulpyrazoleintermediates.Theimportantfeaturesofthisprotocolwerecheapmaterials,easyprocess,mildreactionconditionsandgoodyieldofproducts.
简介:阐明physisorbed的效果几何学和hydrogenated钻石电影的电子结构上的活跃离子,HCO3-的模型,H3O+,并且哦hydrogenated钻石(100)上的离子physisorbed出现被构造。密度功能的理论被用来计算状态的几何学,吸附精力,和部分密度。结果证明表面都在离子吸附以后改变了到不同的度的hydrogenated钻石(100)的几何学。在他们之中,H3影响的O+离子hydrogenated钻石(100)的几何学出现大多数。这与计算吸附精力的结果很好一致,它显示一个强壮的静电的吸引力发生在hydrogenated钻石(100)之间表面和H3O+离子。另外,电子从hydrogenated钻石(100)显著地转表面到吸附的H3O+离子,它导致一向下变在H3O+离子。然而,为活跃离子喜欢哦和HCO3-,没有戏剧的变化为吸附的离子的电子结构出现。
简介:活跃监视是在有低风险的前列腺癌症的人的一种可接受的治疗选择。在现在的学习,我们回顾地考察了为活跃监视适合标准,但是选择了激进的前列腺切除术的509个人的结果。然后,在upstaging的风险上改变前列腺特定的抗原(PSA)层次并且在这些病人升级的影响被估计。在三活跃监视criteria—下面完成了包括标准的病人的病理学的特征;那些公民加利福尼亚圣弗朗西斯科的大学癌症研究所和Urology—的欧洲协会;被检验。被认为的人的比例活跃监视的候选人但是随后upstaged或升级被决定。509个病人,186(36.5%;),132(25.9%;)并且88(17.3%;)人们分别地完成了活跃监视标准。(格利森分数7-10)升级从32.8%;到38.6%;,当时upstaging(≥;pT3)从10.2%;到12.5%;,取决于三个活跃监视标准。在24个月的中部的后续以后,三个病人开发了生物化学的复发。当改变PSA层次的影响为每个协议在PSA的上下文为趋势分析用测试被检验时,upstaging的率在有PSA<的人是更低的;4 ;ngml−1。然而,没有在升级上改变PSA层次的影响。在结论,通常使用活跃监视协议带升级和upstaging的风险。更可靠、精确的标记被需要更好成层是活跃监视的适当候选人的人的风险。
简介:ThesoftwareofSYSWELDwasusedtobuildmodelandsimulatethermalcycleofin-serviceweldingontoactivegaspipeline.Influenceofpipediameter,wallthicknessandheatinputonthermalcyclewasstudied.Theresultsshowthatt8/5,t8/3andpeaktemperatureofinnersurfacedecreasewhenwallthicknessincreasesfrom5mmto12mm.Butt8/1willincreaseswiththeincreaseofwallthicknessandwilldecreaseafterthewallthicknessislargerthan7mm.Pipediameterhaslittleinfluenceonthermalcycleandthatinfluencecanbeignoredwhenpipediameterisgreaterthan273mm.t8/5,t8/3,t8/1andpeaktemperatureofinnersurfacewillincreasewiththeincreaseofheatinput.
简介:Afewclassesoforganiccompoundsarepromisingelectrode-activematerialsduetotheirhighpowerandenergydensities,lowcost,environmentalfriendliness,andfunctionality.Inthepresentwork,thepossibilityofusingKlasonligninextractedfrombuckwheathusksasacathode-activematerialforaprimarylithiumbatteryhasbeeninvestigatedforthefirsttime.Thereactionmechanisminthelithium/ligninelectrochemicalcellwassuggestedbasedonthedeepgalvanostaticdischarge(upto0.005V)dataandcyclicvoltammetryresults.ThedependenceoftheelectrochemicalbehavioroftheKlasonligninonthemillingdegreewasevaluated.Themaximumspecificcapacityoftheligninisequalto600mAhg-1atadischargecurrentdensityof75μAcm-2.BeneficialeffectofthethermaltreatmentoftheKlasonlignincathodeat250°Conthecellperformancewasestablished.Itwasfoundthatthedischargecapacityofthecellincreasedby30%intherangefrom3.3to0.9Vforthetreatedcathodematerial.TheseresultsdemonstratetheprospectsofusingKlasonlignin-basedelectrochemicalcellsaslow-rateprimarypowersources.
简介:Thesignificanceofdetectionofurbanactivefaultsandthegeneralsituationconcerningdetectionofurbanactivefaultsintheworldarebrieflyintroduced.Inabriefdescriptionofthebasicprinciplesofanti-disturbanceandhigh-resolutionshallowseismicexploration,thestressisputontheexcitationofseismicsources,theperformanceofdigitalseismographs,receivingmodeandconditions,geometryaswellasdataacquisition,processingandinterpretationintheanti-disturbanceandhigh-resolutionshallowseismicexplorationofurbanactivefaults.Thestudyindicatesthatacontrolledseismicsourcewithalinearornonlinearfrequency-conversionscanningfunctionandtherelevantseismographsmustbeusedindataacquisition,aswellasworkingmethodsforsmallgroupinterval,smalloffset,multi-channelreceiving,short-arrayandhigh-frequencydetectorsforreceivingareused.Attentionshouldbepaidtotheapplicationoftechniquesforstaticcorrectionofrefraction,noisesuppressing,high-precisionanalysisofvelocity,waveletcompressing,zero-phasingofwaveletandpre-stackingmigrationtodataprocessingandinterpretation.Finally,somecasesofanti-disturbanceandhigh-resolutionshallowseismicexplorationofurbanactivefaultsarepresentinthepaper.
简介:Withtheimprovementofseismicobservationsystem,moreandmoreobservationsindicatethatearthquakesmaycauseseismicvelocitychange.However,theamplitudeandspatialdistributionofthevelocityvariationremainsacontroversialissue.RecentactivesourcemonitoringcarriedoutadjacenttoWenchuanFaultScientificDrilling(WFSD)revealedunambiguouscoseismicvelocitychangeassociatedwithalocalMs5.5earthquake.Here,wecarryoutforwardmodelingusingtwo-dimensionalspectralelementmethodtofurtherinvestigatetheamplitudeandspatialdistributionofobservedvelocitychange.ThemodeliswellconstrainedbyresultsfromseismicreflectionandWFSDcoring.Ourmodelstronglysuggeststhattheobservedcoseismicvelocitychangeislocalizedwithinthefaultzonewithwidthof*120mratherthandynamicstronggroundshaking.Andavelocitydecreaseof*2.0%withinthefaultzoneisrequiredtofittheobservedtraveltimedelaydistribution,whichcoincideswithrockmechanicalexperimentandtheoreticalmodeling.