简介：Asanewscientificdiscipline,nanoparticleaerosolscienceandtechnology(NAST)dealswiththeformation,propertiesandbehaviorofnanoparticlesingases.Drivenbyitspracticalapplicationsinmanydifferentfields,NASThasbeenundergoingrapiddevelopment.Aconceptualframeworkofthediscipline,withitsownbasicprinciples,experimentalmethodsandcomputationaltechniques,isnowtakingshape.Thispaperpresentsanoverviewofthecurrentstatusandresearchneedsofthenewdiscipline.Thepresentationbeginswithadiscourseontherelationshipamongvariousparticlesystems,whichoccurfrequentlyinnatureandindustry.Thepropertiesandbehaviorofnanoparticleaerosolsarethendiscussed,withemphasisonthekeyrolesplayedbyparticlesizeandmorphology.Similartofluiddynamics,NASTisanenablingdisciplineinthesensethatithasprovidedtheconceptsandmethodologyneededforthedevelopmentofmanyotherfields.Applicationsofnanoparticleaerosolscienceandtechnologyarehighlightedinthreeimportantareas:(1)aerosolprocessesforsynthesisofnanoparticles,(2)atmosphericnanoparticlesandglobalclimate,and(3)dosimetryofinhalednanoparticles.Thesefieldshavefeaturesincommoninsofarasnanoparticleaerosolsfollowthesamebasiclawsofphysicsandchemistry.

简介：ThisreportgivesabriefintroductiontokeyThaiorganizations,includingresearchinstitutionsandacademicdepartments,activeinparticletechnology.ThisisfollowedbyadescriptionofthelatesttrendofpowdertechnologyandnanoparticletechnologyinThailand.

简介：Thefluidized-bedpolymerizationprocesshasbeeninusefordecades.Fromthemanufacturer'sperspectiveitisdesirabletoimprovetechnologywithoutmajormodificationofthereactorsystem.Therefore,inordertomeetthedemandfornewproductsormoreefficientreactoroperation,manufacturersprefertoimprovethecatalystsysteminthemostcosteffectivemanner.Usingpolypropyleneproductionasanexample,somerecentadvancesinfluidized-bedpolymerizationtechnologyarepresented.

简介：Thispaperexaminesacomputerprogramdevelopedtoanalyzethevibrationofrotatingmachineriesbasedontheoriesofvibrationandmultibodydynamics(MBD).Bendingvibrationproblemsofrotatingmachinerieshavegenerallybeencategorizedaseitherlinearornonlinear.LinearproblemscanbeformulatedbystandardmethodsandnonlinearproblemscanbeformulatedbyMBDmethods.Inourstudy,nonlinearproblemsaretreatedbytheuseofageneral-purposecomputerprogram,RecurDyn(RD).Intheprogramwedeveloped,rotorbendingvibrationanalysis(RotB)structuralpropertiessuchasshafts,rotatingrotarydisks,unbalancedmassesandfoundationstructuresaremodeledasmultibodyelements.Also,nonlinearitiessuchascontact,non-symmetricalshafteffects,bearingcharacteristics,nonlinearrestoringanddampingcharacteristicsinthebearingsaretakenintoaccount.ThecomputationalresultsdemonstratethevalidityofRotB.

简介：部分地，聪明切割的过程，缺陷由尺寸描绘了的结合的效果和在切开前后的内部压力上的2纸被使用破裂力学模型学习。有大尺寸的结合的缺陷是容易的引起缺点生长的严重偏差，这被发现，当切开时，导致薄层的一个非转移的区域。在结合的缺陷的内部压力是很小的一个实际聪明切割的过程，大界面的缺点总是在切开的过程支持缺点生长。同时，增加结合的缺陷的内部压力减少在切开前的缺点生长和它的偏差。stiffener限制的松驰的机制被建议澄清结合的缺陷的效果。而且，当结合的缺陷是在场的时，切开的过程的进步被分析。在切开以后，有大尺寸和高内部的压力的那些结合的缺陷在高温度的退火期间为薄电影的blistering是脆弱的。