学科分类
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426 个结果
  • 简介:Ahighlyreliableinterfaceofself-alignedbarrierCuSiNthinlayerbetweentheCufilmandthenano-porousSiC:H(p-SiC:H)cappingbarrier(k=3.3)hasbeendevelopedinthepresentwork.Withtheintroductionofself-alignedbarrier(SAB)CuSiNbetweenaCufilmandap-SiC:Hcappingbarrier,theinterfacialthermalstabilityandtheadhesionoftheCu/p-SiC:Hfilmareconsiderablyenhanced.AsignificantimprovementofadhesionstrengthandthermalstabilityofCu/p-SiC:H/SiOC:Hfilmstackhasbeenachievedbyoptimizingthepre-cleanstepbeforecap-layerdepositionandbyformingtheCuSiN-likephase.ThiscaplayeronthesurfaceoftheCucanprovideamorecohesiveinterfaceandeffectivelysuppressCuatommigrationaswell.

  • 标签: 界面粘结强度 热稳定性 SIOC 膜表面 等离子体处理 堆栈
  • 简介:该研究采用传统热压和喷蒸热压两种方法来生产杨木刨花板.刨花板内施加10%的脲醛树脂胶(UF),目标厚度分别取10,15,20,和25mm,热压温度均为180℃.喷蒸热压时饱和蒸汽的压力为0.3~0.5MPa,每种厚度下喷汽时间一定,取两个热压时间;传统热压时每种厚度下各取4个热压时间.然后测定试件的吸水厚度膨胀率、吸水率、密度、含水率及力学性能.本文重点讨论了喷蒸热压对杨木刨花板尺寸稳定性的影响.结论认为:喷蒸热压相对于传统热压,在保证刨花板的强度、缩短热压时间的条件下,明显改善了杨木刨花板的尺寸稳定性.

  • 标签: 喷蒸热压 传统热压 杨木刨花板 尺寸稳定性
  • 简介:Inthispaper,stochasticglobalexponentialstabilitycriteriafordelayedimpulsiveMarkovianjumpingreaction-diffusionCohen-Grossbergneuralnetworks(CGNNsforshort)areobtainedbyusinganovelLyapunov-Krasovskiifunctionalapproach,linearmatrixinequalities(LMIsforshort)technique,It?formula,Poincar′einequalityandHardy-Poincaréinequality,wheretheCGNNsinvolveuncertainparameters,partiallyunknownMarkoviantransitionrates,andevennonlinearp-Laplacediffusion(p>1).ItisworthmentioningthatellipsoiddomainsinRm(m≥3)canbeconsideredinnumericalsimulationsforthefirsttimeowingtothesyntheticapplicationsofPoincar′einequalityandHardy-Poincar′einequality.Moreover,thesimulationnumericalresultsshowthateventhecorollariesoftheobtainedresultsaremorefeasibleandeffectivethanthemainresultsofsomerecentrelatedliteraturesinviewofsignificantimprovementintheallowableupperboundsofdelays.

  • 标签: POINCARE不等式 全局指数稳定性 反应扩散 神经网络 非线性 时滞相关
  • 简介:Integrinανβ6isexpressedatanundetectablelevelinnormaltissues,butisremarkablyupregulatedduringmanypathologicalprocesses,especiallyincancerandfibrosis.Noninvasiveimagingofintegrinανβ6expressionusingaradiotracerwithfavorableinvivopharmacokineticswouldfacilitatediseasediagnosisandtherapymonitoring.Throughdisulfide-cyclizedmethod,wesynthesizedinthisstudy,anewintegrinανβ6-targetedcyclicpeptide(denotedascHK),andradiolabeleditwith99mTc.Theabilityoftheresultingradiotracer99mTc-HYNIC-cHKtodetectintegrinανβ6expressioninpancreaticcancerxenograffsandidiopathicpulmonaryfibrosiswasevaluatedusingsmall-animalsingle-photonemissioncomputedtomography(SPECT)/computedtomography(CT).99mTc-HYNIC-cHKshowedsignificantlyimprovedinvivometabolicstabilitycomparedtothelinearpeptide-basedradiotracer99mTc-HYNICHK.99mTc-HYNIC-cHKexhibitedsimilarbiodistributionpropertiesto99mTc-HYNIC-HK,butthetumorto-muscleratiowassignificantlyincreased(2.99±0.87vs.1.82±0.27,P<0.05).High-contrastimagesofintegrinανβ6-positivetumorsandbleomycin-inducedfibroticlungswereobtainedbySPECT/CTimagingusing99mTc-HYNIC-cHK.Overall,ourstudiesdemonstratethat99mTc-HYNIC-cHKisapromisingSPECTradiotracerforthenoninya-siveimagingofintegrinανβ6inlivingsubjects.

  • 标签: INTEGRIN ανβ6 Pancreatic CANCER Pulmonary FIBROSIS
  • 简介:Li4Ti5O12(LTO)/carbonnanotubes(CNTs)compositematerialissynthesizedbasedonasolid-statemethodbysand-milling,spray-dryingandcalciningat8508CunderN2flow.TheLTO/CNTssampleswith1wt%and3wt%weightratioofCNTsadditionandthepristineLTOsampleareprepared.TherateperformanceandthethermalstabilityofthesesamplesareinvestigatedbasedonLiMn2O4(LMO)/LTOfull-cell.TheresultsshowthattheweightratioofCNTsadditionhasdistincteffectonLTOperformances.ThecompositematerialsofLTOcompositedCNTshavebetterperformanceathigh-rateduetotheintercalationenhancementbyconductivenetworkofCNTs.Atsecond,theoverchargingtemperatureresponseofthecell’ssurfacewith1wt%CNTsadditionisthelowest.Theparticlesizedistributionismeasuredandthemostuniformparticlesareobtainedwith1wt%CNTsaddition.ThistrendcouldexplainthatthemediumquantityofCNTsisoptimaltoimprovetheheatandmasstransferandpreventtheproblemsofcrystallitegrowinginterferenceandaggregationduringthecalcinationprocess.

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