简介：Akineticequationofnon-isothermalcrystamzationwasderivedbyextendingAvrami’sequationtothenon-isothermalsituation.Morecrystallizationinformationcanbeobtainedfromthiskineticequation.Thecurvesofnon-isothermalandisothermalcrystallizationswereanalysedandcomparedforpoly(ethyleneterephthalate)(PET),andtheresultswerediscussed.

简介：ThechemicalcompositionandmicrostructureofTibetanmicrocrystallinemagnesitewerestudiedbymeansofXRF,XRDandFESEM.Itisfoundthatthemicrocrystallinemagnesitehasuniformlydistributedgrains,mostlyintherangeof2-4μm,andtheMgOcontentis47.80%.Infusedmagnesia,thedrusesarecolorlesstransparentpericlasemegacrystswithoutimpurity,whilethecrustsandiswhite,withahighMgOcontentupto97%-99%.Thepericlasecrystalsarebig,appearingasfacedandstep-growthmorphology.Massivesecondarylongcolumnarpericlaseiscrystallized.

简介：它仅仅是能在数据被存储的真实世界的可见部分。为如此的不完全、组织病的数据，结晶的数据瞄准atpresenting在包括unobservable事件的事件之中的隐藏的结构。，这被数据结晶化认识到哑巴项目，相应于unobservable事件的潜在的存在，被插入到给定的数据。有可见事件的这些哑巴项目和他们的关系被applyingKeyGraph与哑巴项目设想到数据，象灰尘涉及水分子的结晶化的形成的雪的结晶化一样。为调节要设想的结构的颗粒度水平，数据结晶化的工具与人在真实世界上理解重要情形的过程是综合的。这个基本方法被期望为机会发现的以前的方法带人到成功的决策的各种各样的真实世界领域适用。在这篇论文，我们在一个真实公司与human-interactiveannealing(DCHA)把数据结晶化用于产品的设计。结果显示出它的效果到工业决策。

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简介：Themolecularstructureofpolyethylene（PE）sampleswithvariouscomonomersincludingpropylene,1-buteneand1-hexenewasinvestigatedbyDSCand13C-NMRtechniques.Thedensityofthesamplesvariesfrom0.948g/cm3to0.917g/cm3,andthemolecularweightdeterminedbytheGPCmethodisintherangeof1～2×105.Thebranchpointcontentofthesampleswasdeterminedby13C-NMRmeasurementsandwasfoundtobelessthan20per1000Catomsalongthemainchain.CrystallizationsegregationDSCtechnique（CSDSC）wasusedtocharacterizethebranchpointdistributionorthesegmentlengthdistributionofPEs.Thecrystallizationsegregationwasperformedinasuccessiveannealingprocessatdecreasingtemperatures.Theintervaloftwosuccessiveannealingtemperatureswas6K,andthetimelengthofeachannealingstepwas2.5h.TheCSDSCresultsclearlyindicatethatallthePEsamplesused,includingsomemetallocenePEs,moreorlessexhibittheirnon-uniformityinsegmentlengthdistribution,andbimodalormultimodalCSDSCcurveswereusuallyobserved.ForquantitativecharacterizationoftheCSDSCcurvesandthesegmentlengthdistributiontwoparameters,theaveragemeltingpoint,TmAV,andtheroot-mean-squaredeviationofmeltingtemperature,(ΔTmAV2)1/2,wereproposed.TmAViscorrespondingtotheaveragesegmentlengthduetobranchingand(ΔTmAV2)1/2givesinformationaboutthewidthofthesegmentlengthdistribution.Experimentalresultsshowthatboththedegreeofaveragemeltingtemperaturedepressionandthewidthofthedistributionseemtoincreasewithincreasingthebranchingcontentandaredependentonthetypeofcomonomers.VerygoodreproducibilityandadditivityoftheCSDSCmethodwereevidencedexperimentally.ItwasconcludedthattheCSDSCtechniqueisasensitiveandconvenientmethodforcharacterizingthesegmentlengthdistributionofbr

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简介：AUltrafineamorphousNiBalloywaspreparedviachemicalreductionmethod;ItsstructuresduringthecrystallizatioinprecesswascharacterizedbysuchtechniquesasDifferentialthermalanalysis(DTA),X-rayabsorptionfinestructure(XAFS)andX-raydiffraction(XRD),andcorrelatedtothecatalyticpropertiesforbenzenehydrogenation.ItwasfoundthatthecrystallizationofamorphousNiBalloywascarriedoutintwosteps,asindicatedbytwoexothermicpeakscenteredat598and652Krespectively.Duringthefirststep.twometastablecrystallinephases,i.e.,Ni3BandanoaocrstallineNiphase(Ni-richNiBalloy),wereformed.Furtherannealingathighertemperatureof652KmayresultinthedecompositionofcrystallineNi3BandaggregationofnanocrystallineNi,thebenzenehydrogenationisoptimizedaroundtheannealingtemperatureof623K.ItmostprobablyresultsfromthemaximumamountofactivesiteonnanocrystallineNiformedbythermaltreatmentatappropriateannealingtemperature.

简介：Weinvestigatethedynamiccrystallizationprocessesofcolloidalphotoniccrystals,whicharepotentiallyinvaluableforsolvinganumberofexistingandemergingtechnicalproblemsinregardstocontrolledfabricationofcrystals,suchassizenormalization,stabilityimprovement,andaccelerationofsynthesis.Inthispaper,wereportsystematichigh-resolutionopticalobservationofthespontaneouscrystallizationofmonodispersepolystyrene(PS)micro-spheresinaqueoussolutionintoclose-packedarraysinastaticlineopticaltweezers.Theexperimentsdemonstratethatthecrystalstructureismainlyaffectedbytheminimumpotentialenergyofthesystem;however,thecrystallizationdynamicscouldbeaffectedbyvariousmechanical,physical,andgeometricfactors.Thecomplicateddynamictransformationprocessfrom1Dcrystallizationto2Dcrystallizationandthecreationandannihilationofdislocationsanddefectsviacrystalrelaxationareclearlyillustrated.Twomajorcrystalgrowthmodes,theepitaxygrowthpatternandtheinsertedgrowthpattern,havebeenidentifiedtoplayakeyroleinshapingthedynamicsofthe1Dand2Dcrystallizationprocess.Theseobservationsofferinvaluableinsightsforin-depthresearchaboutcolloidalcrystalcrystallization.

简介：NiTialloyisproducedbymechanicalalloying(MA).Itbecomesamorphousaftermillingforenoughtime,suchas100hinthispaper.DSCmeasurementshowsthatthecrystallizationtemperatureis676Kfortheamorphouspowder.Activationenergyofcrystallizationis199.98kJ/molforMApowder,whichislowerthanthatofamorphouspreparedbymagnetronsputtering.Avramiparameterofcrystallizationis1.07.

简介：PP/claycompositeswithdifferentdispersions,namely,exfoliateddispersion,intercalateddispersionandagglomeratesandpanicle-likedispersion,werepreparedbydirectmeltintercalationorcompounding.TheeffectofclaydispersiononthecrystallizationandmorphologyofPPwasinvestigatedviaPLM,SAXSandDSC.Experimentalresultsshowthatexfoliatedclaylayersaremuchmoreefficientthanintercalatedclayandagglomeratesofclayinservingasnucleationagentduetothenano-scaledispersionofclay,resultinginadramaticdecreaseincrystalsize(lamellarthicknessandspherulites)andanincreaseofcrystallizationtemperatureandcrystallizationrate.Ontheotherhand,adecreaseofmeltingtemperatureandcrystallinitywasalsoobservedinPP/claycompositeswithexfoliateddispersion,duetothestronginteractionbetweenPPandclay.Comparedwithexfoliatedclaylayers,theintercalatedclaylayershavealessimportanteffectonthecrystallizationandcrystalmorphology.Noeffectisseenforsampleswithagglomeratesandpanicle-likedispersion,inregardtomeltingtemperature,crystallizationtemperature,crystalthicknessandcrystallinity.

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简介：阶段PVDF水晶结构和在先存在的阶段PVDF球粒以内的豌豆的结晶化上的豌豆的效果被光显微镜学OM，红外线的光谱学红外和扫描电子显微镜学SEM调查了。结果证明阶段PVDF球粒由展出高度弄弯的像滚动的形态学的lamellae组成并且在充满豌豆的混合优先地发展。与增加豌豆集中，滚动直径增加和滚动更好与对方被分开。豌豆在interspherulitic区域使第一结晶，transcrystalline层发展。随后，豌豆的transcrystalline层继续在阶段PVDF球粒以内成长，例如在在滚动之间的区域，直到在另外的豌豆transcrystalline层或球粒上侵犯。结晶化动力学结果显示在阶段PVDF的intraspherulitic区域的豌豆晶体的生长率与阶段PVDF的结晶化温度与豌豆，而是否定豌豆的内容显示出积极关联。

简介：PECVD在玻璃底层上准备的非结晶的硅电影被退火的常规炉子并且快速的热退火(RTA)分别地使结晶。夫罗姆塞·拉曼系列，X光检查衍射和扫描电子显微镜，谷物尺寸在两种技术在850℃被使结晶，这被发现。RTA做的薄膜是光滑的并且完成式组织，薄膜由FA退火了有高度结构的混乱。大约30nm的一种平均谷物尺寸被两种技术获得。

简介：ThestructureofaggregationstateandisothermalcrystallizationbehaviorofNylon-1010havebeenstudiedbyWAXD,DSE,Variance-RangeFunctionanddensitymeasurement.TheresultsshowthatcrystallizationofNylon-1010hasthemostsuitableannealingtemperature,thecrystalsoftheNxlon-1010aretwo-dimensionheterogeneousnucleation.Bothlowtreatmenttemperatureandhighcrystallizationte,temperaturearedisadvantageousforNylon-1010crystalgrowth.

简介：这份报纸调查了处于暂停条件在铁的oxides/oxyhydroxides的结晶化上有或没有功能的组终止的五种Au表面的效果。自我装配的单层(SAM)被用来创造氢氧根(-OH),carboxyl(-COOH),胺(-NH2)和甲基(-CH3)functionalized出现，它证明了具有一样的表面密度。在Fe的底层的沉浸时间(哦)<潜水艇class=“a-plus-plus”>3暂停被划分成两次部分。在2h的第一个时期期间，除了之外，很少铁的oxide/oxyhydroxide被扔-Fe2O<潜水艇class=“a-plus-plus”>3在-NH2表面。为10h的结晶化在功能的表面上证实了更种铁混合物。Goethite和磁赤铁矿在四功能的表面上被注意，并且磁赤铁矿也在Au表面上成长了。-Fe2O<潜水艇class=“a-plus-plus”>3被发现在上哦表面，当时生长斜方晶并且等边六角形FeOOH在-NH2表面。就在自然的铁混合物的宽存在而言，我们的调查是到在暂停区域的铁biomineralization的学习的一个先例工作。

简介：X－raydiffraction(XRD)anddifferentialscanningcalorimetry(DSC)wereemployedtoinvestigatetheinfluenceofNicontentonthecrystallizationofamorphousZr70Cu30-xNix(atomfrationin%)alloys,ExperimentalresultsshowthatwiththeNicontentincreasingtheactivationenergiesforcrystallizationofamorphousZr70Cu30-xNixalloysincreasecorrespondingly,indicatingthatthethermalstabilityisgreatlyimproved.AlltheDSCtracesofamorphousZr70Cu30-xNixalloysexhibittwoexothermicpeaks,suggestingthatthecrystallizationprocessviaadouble-stageticles,whilethesecondonecorrespondstotheprecipitaionofnano-scaleZr2Niphaseandcrystallizationofresidualamporphousphase,ThemechanismonthecrystallizationofamorphousZr70Cu30-xNixalloyswasdiscussed.

简介：Variousfunctionalgroupshavebeensuggestedtoplayessentialrolesonbiomineralizationofcalciumcarbonate（CaCO3）innaturalsystem.2Dand3DmodelsofregularlyarrangedfunctionalgroupshavebeenestablishedtoinvestigatetheireffectonCaCO3crystallization,Thismini-reviewsummarizestherecentprogressandthefuturedevelopmentisprospected.

简介：Usinganewlow-temperatureprocess(＜600℃),thepoly-SiTFTwasfabricatedbymetal-inducedlateralcrystallization(MILC).Anultrathinaluminumlayerwasdepositedona-Sifilmandselectivelyformedbyphotolithography.Thefilmswerethenannealedat560℃toobtainlaterallycrystallizedpoly-Sifilm,whichisusedasthechannelareaofaTFT.Thepoly-SiTFTshowedanon/offcurrentratioofhigherthan1×106atadrainvoltageof5V.TheelectricalpropertiesaremuchbetterthanTFTfabricatedbyconventionalcrystallizationat600℃.

简介：Astudyconcerningtheeffectofvibrationonthecrystalstructureandmorphologyforisotacticpolypropylene(iPP)wasconducted.Thecrystallitesize.crystalstructureandcrystallinityofiPPunderorwithoutvibrationtreatmentwereinvestigatedbymeansofdifferentialscanningcalorimetry(DSC)andwideangleX-raydiffraction(WAXD).Theresultsrevealthatthecrystallinityofthevibratedsamplesdecreasesatahighcoolingrate,butitremainsconstantatalowcoolingratebecauseofthechainrelaxationofiPP.Ithasbeenfoundthatvibrationobviouslyincreasesthecontentofβ-formofcrystalphaseandtheamountofβ-crystalmainlydependsonthevibrationamplitude.

简介：Inthisstudyamathematicalexpressionoftraceelementabundancerelationshipforthemul-ti-stagecomagmaticfractionalcrystallizationhasbeenestablished,basedongeochemicalstudiesoftheEmeishanbasalt-trachyteseriesandadjacentmafic-ultramaficlayeredintrusions,aswellasontheavail-abledataforbasalt,andesite,daciteandrhyoliteseriesinsouthernAndes,Chile,whichhavebeenwelldocumented.Itisdemonstratedthattheabundanceconstant(R)foragiventraceelementatdif-ferentstagesoffractionalcrystallizationofaparentalmagmaishighlyvariable,whichcanbeusedasacriteriontodividefractionalcrystallizationstages.