简介:ThispaperconsidersthereliablecontroldesignforT-Sfuzzysystemswithprobabilisticactuatorsfaultsandrandomtime-varyingdelays.Thefaultsofeachactuatoroccursrandomlyanditsfailureratesaregovernedbyasetofunrelatedrandomvariablessatisfyingcertainprobabilisticdistribution.Intermsoftheprobabilisticfailuresofeachactuatorandtime-varyingrandomdelays,newfaultmodelisproposed.Basedonthenewfuzzymodel,reliablecontrollerisdesignedandsufficientconditionsfortheexponentiallymeansquarestability(EMSS)ofT-SfuzzysystemsarederivedbyusingLyapunovfunctionalmethodandlinearmatrixinequality(LMI)technique.Itshouldbenotedthattheobtainedcriteriadependonnotonlythesizeofthedelay,butalsotheprobabilitydistributionofit.Finally,anumericalexampleisgiventoshowtheeffectivenessoftheproposedmethod.
简介:Wetheoreticallyinvestigatetheelectrontransmissionthroughaseven-layersemiconductorheterostructurewiththeDresselhausspin-orbitcouplingundertwoappliedoscillatingfields.Numericalresultsshowthatbothofthespin-dependentsymmetricBreit-WignerandtheasymmetricFanoresonancesappearandthatthepropertiesofthesetwotypesofresonancepeaksaredependentontheamplitudeandtherelativephasesofthetwoappliedoscillatingfields.Themodulationofthespin-polarizationefficiencyoftransmittedelectronsbytherelativephaseisalsodiscussed.
简介:这研究针对使用片3-D优化到在高度的高通过流动扇子/增强软件的角落流动绕过的控制比率广告扇涡轮引擎。二种片3-D优化,弯曲结束并且鞠躬,上被集中。由于各自的操作模式和环境,3-D的途径转子片的空气动力学的建模与定子翼不同。为转子基于角落流动和紧张问题的考虑的机制的理解,这份报纸使用许多片3-D优化途径例如装载分发优化,离开角度的不安和栈轴操作,它分别地对转子和定子合适。获得的3-D片和翼能改进角落流动特征由弯曲结束并且鞠躬效果。流动在扇子/增强软件的角落的这学习表演的结果例如增强软件的翼的扇子中心区域,尖端和中心,由3-D效果很复杂、统治。在那里的第二等的流动被发现在压缩机表演上有强壮的有害效果。效果弯曲结束并且鞠躬能在角落改进流动分离,但是他们工作的特定的方法和申请范围是有点不同的。经由片3-D优化重新设计片控制角落流动有效地减少了损失产生并且由大数量改进了货摊边缘。
简介:一个二维的电磁的Particle-in-Cell(照片)模拟模型被建议与横梁宽度w学习强烈离子横梁的繁殖与电子皮肤深度c/相比小的b通过背景血浆的pe面对外部应用磁场。有效电子gyroradiusw<潜水艇class=“a-plus-plus”>ge被发现面对磁场是为离子横梁运输的一个重要参数。在横梁区域,背景血浆对宽度w的离子横梁不同地作出回应b
简介:一系列-cyclodextrin-conjugated4手臂poly(乙烯乙二醇)-poly(lactide-co-glycolide)(4手臂PEG-PLGA)共聚物被D,L减水乳酸和glycolide的戒指洞聚合作为开始者用4手臂木钉综合,然后结合了与单音(6-ethylenediamine-6-deoxy)--cyclodextrin(CDen)或衔接ethylenediamino的二度--CD(BCDen)。共聚物的化学结构被1H-NMR和FTIR光谱学。-CD-conjugatedPEG-PLGA由于CD和牛的浆液白朊(BSA)包括complexation的形成形成了稳定的反向的微粒,它能在器官的溶剂答应BSA改进封装效率。而且,我们表明了一条一步舞途径构造用这些的包含蛋白质的电影颠倒的macroporous微粒。有订的毛孔数组的电影直接从反向的微粒被准备。有趣地,蛋白质完全除了毛孔位于整个矩阵。
简介:BecauseERstressisoneofthesignalingpathwaysinvolvedintheregulationofautophagy,wehypothesizedthatERstressmightalsoplayanimportantroleinradiation-inducedautophagy.SHG44andHeLacellswereirradiatedwithX-raysandcarbonionsof30and75keV/mat2Gy.TheexpressionlevelsofBip,amajorindicatorofUPR,at4and24hpost-irradiationareshowninFig.1(a)and(b)forSHG44andHeLacells,respectively.
简介:Althoughmanyliteratureshavebeenfocusedontheunderneathflowandlossmechanism,veryfewexperimentsandsimulationshavebeendoneundertheengines'representativeworkingconditionsorconsideringtherealcavitystructureasawhole.Thispaperaimsatrealizingthegoalofdesignofefficientturbineandscrutinizingthevelocitydistributioninthevicinityoftherimseal.Withtheaidofnumericalmethod,anumericalmodeldescribingtheflowpatternbothinthepurgeflowspotandwithinthemainstreamflowpathisestablished,fluidmigrationanditsaccompaniedflowmechanismwithintherealisticcavitystructure(withrimsealstructureandconsideringmainstream&secondaryairflow'sinteraction)isusedtoevaluateboththeflowpatternandtheunderneathflowmechanismwithintheinwardrotatingcavity.Meanwhile,theunderneathflowandlossmechanismarealsostudiedinthecurrentpaper.Thecomputationalresultsshowthatthesealingairflow'singestionandejectionarehighlyinterwoundwitheachotherinbothupstreamanddownstreamflowoftherimseal.Boththedownstreamblades'potentialeffectsaswellastheupstreamblades'waketrajectorycanbringabouttheingestionofthehotgasflowwithinthecavity,abruptincreaseofthestaticpressureisbelievedtobethemainreason.Also,theresultsindicatethatsealingairflowejectedthroughtherearcavitywillcauseunexpectedlossneartheoutletsectionofthebladesinthedownstreamoftheHProtorpassages.
简介:Thespin-polarizedlinearconductancespectrumandcurrent-voltagecharacteristicsinafour-quantum-dotringembodiedintoAharonov-Bohm(AB)interferometerareinvestigatedtheoreticallybyconsideringalocalRashbaspin-orbitinteraction.Itshowsthatthespin-polarizedlinearconductanceandthecorrespondingspinpolarizationareeachafunctionofmagneticfluxphaseatzerobiasvoltagewithaperiodof2π,andthatHubbardUcannotinfluencetheelectrontransportpropertiesinthiscase.Whenadjustingappropriatelythestructuralparameterofinter-dotcouplinganddot-leadcouplingstrength,theelectronicspinpolarizationcanreachamaximumvalue.Furthermore,byadjustingthebiasvoltagesappliedtotheleads,thespin-upandspin-downcurrentsmoveinoppositedirectionsandpurespincurrentexistsintheconfigurationspaceinappropriatesituations.Basedonthenumericalresults,suchamodelcanbeappliedtothedesignofaspinfilterdevice.
简介:Agreenapproachtothesynthesisandmorphologicalcontrolofhighperformancepolyimidesandtheirnanohybridshish-kebabsinglycerolthroughreaction-inducedcrystallizationofnylon-salt-typemonomerswasreported.Crystallinepolyimidenanoplatescanbeobservedbydirectpolycondensationofpyromelliticacidwithvariouskindsofaliphaticoraromaticdiamines.Withtheexistenceofcarbonnanotubes,thepolyimidescanbesuccessfullydecoratedonthesurfaceofCNTsthroughareaction-inducedhetero-epitaxialcrystallizationprocess,andresultedinnovelpolyimide/CNTnanohybridshish-kebabs(NHSKs)structures.ThemorphologiesoftheNHSKscanbefine-tunedthroughchangingtheconcentrationofmonomersorthereactiontemperature,especiallythroughtheintroductionofdynamiciminechemistry,theformationprocessofNHSKscanbeattributedtoasoftepitaxymechanism.ThusagreenapproachforthesynthesisofhighperformancepolyimidesandtheirCNTbasednanohybridstructureswasexplored,whichshouldbeofgreatvaluefortheirapplicationsinhighperformancereinforcednanocomposites.
简介:两次画技术被采用准备防腐蚀的涂层电影与acrylate由vinylidene氯化物(VDC)的共聚物的水的乳胶形成了的重型,也就是甲基acrylate(麻省),乙醇acrylate(EA),丁基acrylate(BA)或2-ethylhexylacrylate(EHA)。严厉咸水花的腐蚀测试证明优化两次画技术是酸的乳胶答案被适应pH56为首先油漆,当它为第二张画直接被利用时。严厉咸水花的腐蚀的600h的测试证明那MA-VDC85涂层能最优地保护钢,而有75%90%VDC内容的另外的acrylate-VDC涂层不能那么有效地保护钢。进一步的腐蚀测试证明(1)MA-VDC85涂层为咸水花的腐蚀的至少1000h保护了钢免受金属性的光泽的损失的伤害;(2)到钢的MA-VDC85涂层的粘附为咸水花的腐蚀的至少800h是优秀的,但是在1000h以后变得很差。微分扫描热量测定,thermogravimetric分析,X光检查光电子光谱学和Fourier变换红外线的光谱学被用来评估侵蚀的MA-VDC85电影。
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简介:AsimpleandefficientcascadeMichael/cyclizationreactionof3-aminoindolin-2-oneswithenones/enalswasidentifiedforthesynthesisofpotentiallybiologicallyactive3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles],usingDBUasanefficientcatalystandethyleneglycolasanenvironmentallybenignsolvent.Morediverse3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles]analoglibrarieswerepreparedingoodyields(upto97%).Thestructureof3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles]wasconfirmedbymassspectrometryanalysis,NMRanalysisandsinglecrystalX-raydiffraction.Themainadvantagesofthismethodincludetheavailabilityofstartingmaterials,simpleexperimentaloperation,shortreactiontime,aswellashighyieldsobserved.
简介:ThinheavilyMg-dopedInGaNandGaNcompoundcontactlayerisusedtoformNi/AuOhmiccontacttop-GaN.ThegrowthconditionsofthecompoundcontactlayeranditseffectontheperformanceofNi/AuOhmiccontacttop-GaNareinvestigated.Itisconfirmedthatthespecificcontactresistivitycanbelowerednearlytwoordersbyoptimizingthegrowthconditionsofcompoundcontactlayer.WhentheflowrateratiobetweenMgandGagassourcesofp++-InGaNlayeris10.6%andthethicknessofp++-InGaNlayeris3nm,thelowestspecificcontactresistivityof3.98×10-5?·cm2isachieved.Inaddition,theexperimentalresultsindicatethatthespecificcontactresistivitycanbefurtherloweredto1.07×10-7?·cm2byoptimizingthealloyingannealingtemperatureto520℃.