简介：与空隙的牛顿的液体由一座钟摆运动的液体桥连接的一双中央动人的球形的粒子经常在微粒结合过程被遇到。在这篇论文，由假定完成式湿的状况，静态的液体桥牌上的液体体积和分离距离的效果被分析，并且在破裂精力之间的关系和液体桥体积也被学习。这些点将具有在与粘合剂粒子有关的工业过程的意义。

简介：BasedonKármán’snonlinearfundamentaldifferentialequations,thenewapproach,whichcombinesmodifiediterationmethodwithGalerkin’sone,hasbeenputforwardtosolvenonlinearbendingofshallowsphericalshellwithconcavebaseandclampededgesonthePasternakfoundationunderuniformloadsinthispaper.Mathematicalexpressionofload-deflectionhasbeengiven;furthermore,resultsobtainedareingoodagreementwithexistentones.

简介：Thispapergivesanexactanalysisofarotatingpiezoelectricsphericalshellwitharbitrarythickness.Atfirst,threedisplacementfunctionsareintroducedtosimplifythebasicequationsofasphericallyisotropic,piezoelectricmedium.Byexpandingthedisplacementfunctionsaswellastheelectricpotentialintermsofsphericalharmonics,thebasicequationsofequilibriumareconvertedtoanuncoupledEulertype,secondorderordinarydifferentialequationandacoupledsystemofthreesecondorderordinarydifferentialequations.Ageneralsolutiontothehomogeneousequationsofequilibriumisthenderived.Thestaticanalysisofarotatingsphericalshellisthenperformedandnumericalexampleispresented.

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简介：ＮＯＮ－ＳＹＭＭＥＴＲＩＣＡＬＬＡＲＧＥＤＥＦＯＲＭＡＴＩＯＮＯＦＡＳＨＡＬＬＯＷＴＨＩＮＳＰＨＥＲＩＣＡＬＳＨＥＬＬＷａｎｇＸｉｎｚｈｉ（王新志）ＲｅｎＤｏｎｇｙｕｎ（任冬云）ＷａｎｇＬｉｎｘｉａｎｇ（王林祥）ＹｅｈＫａｉｙｕａｎ（叶开沅）（Ｇａｎ...

简介：Non-sphericalmicronandnano-sizedparticlesandtheircompositeshavebecomeessentialinselectapplicationareasofoptics,wearresistance,personnelprotection,chemicalmechanicalpolishing,andbiomedicine.Inthispaper,thesynthesisofcompositeandceramicnon-sphericalparticlesusingstopflowlithographyisreported.Precursorsuspensionsofpoly（ethyleneglycol）diacrylate,2-hydroxy-2-methylpropiophenoneandSiO2orAl2O3areprepared.Theprecursorsuspensionflowsthroughamicrofluidicdevicemountedonanuprightmicroscopeandispolymerizedinanautomatedprocess.Aphotomaskpatternedwithtransparentgeometricfeatures,whichdefinethecross-sectionalshapesoftheparticles,maskstheUVlighttosynthesizemicronsizedparticles.Particleswithaxialdimensionsrangingfrom35to167μmweresynthesized.Controlofdevicechanneldepthandobjectivelensmagnificationenablesthemanipulationoftheparticlesize.Compositeparticlesintriangular,square,pentagonal,hexagonal,andcircularcrosssectionsweresynthesized.Subsequently,thetransformationofthecompositeparticlesintothecorrespondingmetaloxideparticleswasachievedthroughpolymerburn-offandsintering.

简介：为粒子形态学和对使流体化床的动力学的描述的球状和Zingg因素的比较被介绍。它被发现那Zingg因素Fz=LH/B2(在分别地，L，H和B是一个粒子的长度，宽度和高度的地方)很好描述粒子形态学的效果。试验性的结果证明非球形的粒子给以压力落下同样与球形的粒子相比优秀的使流体化的穷人，Umf，等等。与一样的卷等价物直径，非球形的粒子有更低的Umf和使流体化的系数。一些光滑的曲线在参数，Umf和Fz之间被获得了。使液化的质量能被使流体化评估系数，它在这份报纸被相关到Zingg因素和最小的使流体化速度。

简介：Thefree-parameterperturbationmethodisappliedtosolvetheproblemsofnonlinearstabilityofsphericalshallowshellsunderuniformload.Asamodifiedperturbationmethod,thefree-parameterperturbationmethodenablesresearcherstoobtainallcharacteristicrelationswithoutchoosingthecertainperturbationparameter.Someexampleswerediscussedtostudythevarietyregulationsofdeflectionsandstressofshellsintheprocessofbuckling,andtheresultswerecomparedwiththoseofotherresearchers.

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简介：为它的高氧化抵抗，钇硅酸盐是为在在1600°C上面的温度的carbon-fiber-reinforcedcomposites的保护的涂层的一个重要候选人。一个新奇方法，由一起沉淀组成，弄干水花，热处理和plasma-densification，被开发准备Y2SiO5粉末为热喷洒。作文，形态学和综合Y2SiO5粉末的流动能力被XRD，SEM和霍尔流量计分别地调查。结果证明综合Y2SiO5粉末与高纯净是将近球形的。分别地，Y2SiO5粉末的明显的密度和流动能力是1.87g/cm3和37s/50g它为大气的血浆喷洒导致多达80%的高免职效率。

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简介：Alginatebeads,oftenusedforcontrolledreleaseofenzymesanddrugs,areusuallyproducedbysprayingsodiumalginateliquidintoagellingagentusingmechanicalvibrationnozzleorairjet.Inthisworkanalternativemethodofelectro-spraywasemployedtoformdropletswithdesiredsizefromahighlyviscoussodiumalginatesolutionusingconstantDCvoltage.Thedropletswerethencuredinacalciumchloridesolution.Themainobjectivewastoproducemono-sizedbeadsfromsuchahighlyviscousandnon-Newtonianliquid(1000-5000mPas).Theeffectsofnozzlediameter,flowrateandconcentrationofliquidonthesizeofthebeadswereinvestigated.Amongtheparametersstudied,voltagehadapronouncedeffectonthesizeofbeadsascomparedtoflowrate,nozzlediameterandconcentrationofalginateliquid.Thesizeofbeadswasreducedtoaminimumvaluewithincreasingthevoltageintherangeof0-10kV.Attheearlystagesofvoltageincrease(i.e.uptoabout4kV),therateofsizereductionwasrelativelylow,whilethedrippingmodedominated.However,inthemiddlepartoftherangeofappliedvoltage,wheretherateofsizereductionwashigh(i.e.about4-7kV),anunstabletransitionoccurredbetweendrippingandjetting.Attheendpartoftherange(i.e.7-10kV)jetmodeofspraywasobserved.Increasingtheheightoffallofthedropletswasfoundtoimprovethesphericityofthebeads,becauseoftheincreasedtimeofflightforthedroplets.Thiswasespeciallyidentifiableathigherconcentrationsofthealginateliquid(i.e.3w/v%).

简介：InthisworkweproposetoreplacetheGLPDhypo-elasticitylawbyamorerigorousgeneralizedHooke’slawbasedonclassicalmaterialsymmetrycharacterizationassumptions.ThislawintroducesinadditiontothetwowellknownLame’smoduli,fiveconstitutiveconstants.AnanalyticalsolutionisderivedfortheproblemofasphericalshellsubjectedtoaxisymmetricloadingconditionstoillustratethepotentialoftheproposedgeneralizedHooke’slaw.