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355 个结果
  • 简介:CatalystcontainingshapeselectivezeoliteisusedtoinvestigatethecatalyticcrackingcharacteristicsofpalmoilandthreetypesofhydrocarbonVGOsonafixedfluidizedbed(FFB)unit.Theadvantageofproducinglightolefinsandlightaromaticsbycatalyticcrackingofplantoilisdiscussed.Resultsindicatethatthehydrocarbylgroupoftheplantoilmoleculeisquitereadilycrackable;theC6-C8aromaticsyieldiswellaboveandthelightolefinsyieldisaboutthesamewiththehydrocarbonfeeds,whiletheyieldsoflowvalueproductsarelower;thehydrocarbylgroupoftheplantoilmoleculehasstrongtendencyofaromatization,andcanenterthezeoliteporestoselectivelyformC6-C8aromatics;duringcatalyticcrackingofplantoilandfattyacids,aportionoftheoxygenisremovedintheformofwaterthroughhydrogentransferreaction,whileolefinsarepreventedfrombeingsaturated,whichcanensureproperyieldsofbothlow-carbonolefinsandlightaromatics.

  • 标签: plant oil catalytic CRACKING HYDROGEN-TRANSFER LIGHT
  • 简介:<正>ThispaperdevelopsasymptoticpropertiesofsingularlyperturbedMarkovchainswithinclusionofabsorbingstates.Itfocusesonbothunscaledandscaledoccupationmeasures.Undermildconditions,amean-squareestimateisobtained.Byaveragingthefastcomponents,weobtainanaggregatedprocess.Althoughtheaggregatedprocessitselfmaybenon-Markovian,itsweaklimitisaMarkovchainwithmuchsmallerstatespace.Moreover,asuitablyscaledsequenceconsistingofacomponentofscaledoccupationmeasuresandacomponentoftheaggregatedprocessisshowntoconvergetoapairofprocesseswithaswitchingdiffusioncomponent.

  • 标签: Singularly PERTURBED MARKOV chain OCCUPATION measure
  • 简介:Themanagementstrategiesofafirmareinevitableaffectedbyindividualbehaviorpreferences.Theeffectofindividualpreferenceontheevolutionarydynamicsforsupplychainsisstudiedbyemployingreplicatordynamics.Eachfirmhasthreebehaviorpreferences:selfishness,fairness,andaltruism.Firstly,thecasethatthestrategysetofmanufacturersandretailersincludingtwopurestrategiesisconsideredandtheeffectofpreferenceparameterontheequilibriumoutcomeintheshortterminteractionisdiscussed.Secondly,theequilibriumstateintheshort-termisalwaysdisturbedbecausethechangeoftheenvironment,firm’sstructure,andsoforth.Usingthereplicatordynamics,theevolutionarystablestrategiesofmanufacturersandretailersinthelong-terminteractionareanalyzed.Finally,theextendcasethatthestrategysetofmanufacturersandretailersincludethreepurestrategiesisinvestigated.Theseresultsarefoundthatthestrategyprofileinwhichbothmanufacturerandretailerchoosefairnessoraltruism,oroneplayerchoosesfairoraltruisticstrategyandtheotherplayerchoosesselfishstrategymaybeevolutionarystable,thestabilityoftheseequilibriadependsonthethepreferenceparameters.

  • 标签: stability EVOLUTIONARY STABLE strategy equilibrium PREFERENCE
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  • 简介:Physiotherapistshavelongbeenengag-edinthestudyoftheeffectofradia-tiononthehealingprocessofwoundsonskinandotherdiseases.ChengPing,YangHongandXiaQiliangofthePhysiotherapyDepartmentofChanghaiHospitalinShanghaihavedeve-lopeda“H”tubeusingcompoundsof

  • 标签: radia HEALING HELIUM elusion ordinary materia
  • 简介:Thispaperanalysestheinfluenceofcertainparametersandfactorsonthecharacteristicsoftheelectropneumaticloudspeakeranddescribestheexperimentalworkcarriedout.Thedevelopedportableelectropneumaticloudspeakerpossessesgoodpropertieswithaflatfrequencyresponsefrom400Hzto2kHzandamaximumsoundpressrueoutputof120dBatadistance2metreonaxisfromthehornmouth.Themagneticfluxdensityatthemagneticgapis19,000gauss.Theelectropneumaticloudspeakerissmallinsizeandlightweight.

  • 标签: LIGHTWEIGHT METRE Battery CHAMBER absolute leakage
  • 简介:Optofluidics是光学和microfluidics(薄片上的所谓的实验室)的集成。液体的使活动在那里是一种关键技术。在为控制microscale液体的许多方法,轻使活动特别地有趣。轻使活动提供一个新奇方法控制液体的流动为生物医学并且biotechnological应用,等等……设备的复杂性和费用可以被使用完全的光控制极大地有时减少并且可能比另外的方法在操作更灵活。然而,液体的轻使活动是象optofluidics一样的一块发芽的地。有大量工作做。这里,我们系统地基于下列点为液体的轻使活动描述四机制:optoelectrowetting,photothermal效果,放射压力,感光性的物质。

  • 标签: 光流体技术 光电效应 辐射压强 感光性物质
  • 简介:Weconsiderapopulation-size-dependentbranchingchaininageneralrandomenvironment.Wegivesuffcidentconditionsforcertainextinctionandfornon-certainextinction.Thechainexhibitsdifferentasymptoticaccordingtosupk,θmk,θ<1,mk,θn→1ask→∞,n→∞,infk,θmk,θ>1.

  • 标签: 随机环境 灭绝 人口 支链 分枝 尺寸
  • 简介:Let(ξn)n^∞=obeaMarkovchainwiththestatespaceχ={1,2...,b},(gn(x,y))n^∞=lbefunctionsdefinedonχ×χandFmn,bn(W)=bn/1mn+bn∑k=mn+1gk(ξk-1,ξk).InthispaperthelimitpropertiesofFmn,bn(w)andthegeneralizedrelativeen-tropydensityfmn,bn(w)=-(1/bn)logp(ξmn,mn+bn)arediscussed,andsometheoremsona.s.convergencefor(ξn)n^∞=0andthegeneralizedShannon-McMillan(AEP)theoremonfinitenonhomogeneousMarkovchainsareobtained.

  • 标签: AEP NONHOMOGENEOUS MARKOV CHAINS LIMIT THEOREM
  • 简介:ObjectiveToscreenformutationsinmyosin-7Agene(MYO7A)inpatientswithprelingualnonsyndromichearingimpairment.Methods31sporadicpatientswithcongenitalhearingimpairmentand65patientsfrom34familieswithprelingualhereditaryhearingimpairmentinChinaweretestedinthisstudy,and100hearingnormalindividualswereusedascontrol.GenomicDNAisolatedfromwholebloodofallsubjectswassubjectedtopolymerasechainreaction(PCR)toamplifyselectedexonsofMYO7Agene.ThePCRproductsweresubsequentlyscreenedusingsinglestrandconformationalpolymorphismanalysis(SSCP)anddirectsequencingwhenthefragmentsshowedanabnormalelectrophoreticpattern.ResultsGgAtransitionatposition617inexon7,whichwouldproduceanA206Gaminoacidsubstitution,wasdetectedintwopatientsbutinnoneoftheunaffectedmembersinthefamilies.ThisheterozygousmissensemutationhappenedwithinahighlyconservedheptapeptidesequenceofMYO7Aprotein,andiscloselyrelevanttopreligualnonsyndromicdeafness.ConclusionsTheA206Gsubstitutionispossiblyanewmutationtocausepreligualnonsyndromichearingimpairment.Ourresultsprovideevidencethatexon7ofMYO7Aisamutationalhotspotingenetichearingimpairment.

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  • 简介:瞄准:显示出是否分子的马达达因在在一条微导管轨道,分子的马达肌浆球蛋白Va,马达recruiter肌浆球蛋白Va,VIIa-Rab27a/b交往蛋白质(MyRIP),和泡受体上,一条F肌动朊轨道上的Rab27b在包含intramanchette运输(IMT)的人和猴子精子形式期间是在场的。方法:Spermiogenic房间与妨碍的精子缺乏和正常成年cynomolgus猴子(Macacafascieularis)从三个人被获得。Immunocytochemical察觉和反向的抄写聚合酶链反应(RT-PCR)蛋白质的分析被执行。样品被轻显微镜分析。结果:用RT-PCR,我们发现了那达因在,肌浆球蛋白Va,MyRIP和Rab27b在猴子睾丸被表示。,这些蛋白质对领局部性由免疫荧光出现,特别地在人和猴子精子形式期间。结论:我们推测在首领精子形式期间,填写基于微导管、基于肌动朊的泡的那些蛋白质搬运系统,这实际上是在领的现在并且可能可能涉及intramanchette运输。

  • 标签: 精子形成 动力蛋白 人体生理学 分子马达
  • 简介:Thispaperanalyzesmanufacturers’wholesalepricedecisionsandtheevolutionarilystablestrategiesoftheretailers’marketingbehaviorinduopolysupplychains,whereeachchainconsistsofonemanufacturerandmanyretailers.Eachretailerchoosesoneoftwomarketingstrategies:socialresponsibilityornon-socialresponsibility(i.e.,afirmonlycaresaboutthebenefitsofitsshareholders).Weidentifytheconditionsunderwhichastrategyprofileisevolutionarilystable.Furthermore,weinvestigatethemanufacturers’wholesalepricesandfindthefollowing:(i)theretailer’ssocialresponsibilitydecreasestheunitwholesaleprice;(ii)whenthedegreeoftheretailer’ssocialresponsibilityismedium,thesocialresponsibilityoftheretailerinasupplychainincreasestheprofitoftheretailer’sownmanufactureranddecreasestheprofitoftherival’smanufacturer;otherwise,itdecreasestheprofitsofthetwomanufacturers;and(iii)wheneachretailerexhibitsitssocialresponsibilitymoderately,atriple-winsituationcanbeachieved.

  • 标签: Evolutionarily stable strategy REPLICATOR dynamics social