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简介：Ethyl-cyanoethylcellulose((E-CE)C)/styrenesolutioncouldformanisotropicsystemwhentheconcentrationwashighenough.The(E-CE)C/polystyrene(PS)multiphasepolymercouldbeobtainedbyradicalpolymerizationofthestyreneinthesolution.The(E-CE)C/PSmultiphasepolymermaintainedboththecrystallinestructureofthe(E-CE)CandtheamorphousstructureofthePS.Inthemultiphasepolymerproducedfromtheisotropicsolution,however,the(E-CE)CformedspherulitesandspreadinthePSamorphousphase.While,inthemultiphasepolymerproducedfromtheanisotropicsolution,the(E-CE)formedcylindericcrystallineaggregates.Moreover,theorderedlamellartexturewasalsoobservedinthemultiphasepolymerproducedfromtheanisotropicsolution.

简介：Thesandfishisalizardhavingtheremarkableabilitytomoveindesertsandinaswimming-likefashion.Themostout-standingadaptationstothismodeoflifearethelowfrictionbehaviourandtheextensiveabrasionresistanceofthesandfishskinagainstsand,outperformingevensteel.Weinvestigatedthetopography,thecompositionandthemechanicalpropertiesofsandfishscales.Theseconsistofglycosylatedkeratinswithhighamountofsulphurbutnohardinorganicmaterial,suchassilicatesorlime.Remarkably,atomicforcemicroscopyshowsanalmostcompleteabsenceofattractiveforcesbetweenthescalesurfaceandasilicontip,suggestingthatthisisresponsiblefortheunusualtribologicalproperties.Theunusualglycosylationofthekeratinswasfoundtobeabsolutelynecessaryforthedescribedphenomenon.Thescalesweredissolvedandreconstitutedonapolymersurfaceresultinginpropertiessimilartotheoriginalscale.Thus,weprovideapathwaytowardsexploitationofthereconstitutedscalematerialforfutureengineeringapplications.

简介：Amathematicalmodelforsimulatingmorphologicalchangesinspaceandtimeofthe124kmlongalluvialreachoftheKosiRiverbasedonthedataintheperiod1968-79isdeveloped.Equationsareobtainedtodescribethechangesofstreambedparameterssuchasminimumbedlevel,riverwidthandmaximumriverdepth.Fouriersineseriesareusedtofittherivercross-sectionsoverthestudiedreachfordifferentyears.Thegeneraltrendofastreamcross-sectioncanbemodeledsatisfactorilywiththeFouriersineseries.Temporalvariationsinbedlevelandwidthoftheriverhavetimeperiodsofabout7yearand3.2-4.3years,respectively,andarecontrolledbymeanannualdischargewithatimeperiodof13.9years.

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简介：我们为达到块共聚物(BCP)的底部形态学表明一条一般途径薄电影。在我们PS-b-PMMA电影上的以前的大小，BCP电影的表面形态学地图揭示了在哪儿的不同订的政体对接口和这些形态学共存的中间的政体主要垂直或平行的柱体东方。然而，这个更早的工作没探索BCP薄电影的底部形态学。在这研究，我们在在表面上有垂直柱体形态学的演员组块共聚物电影在稳固的底层附近调查了块共聚物形态学。

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简介：SiCwhiskerswith'rosarybead'morphologyweresynthesizedusingsuitablesiliconsourceandcarbonsourcethroughsolidreactionatthetemperatureabove1537K.ThediameterandlengthoftheSiCwhiskerswereabout0.1-1.0μmand20-100μm,respectively.Thelargestdiameteroftheirenlargedendsofthewhiskerswasabout0.2-1.0μm,anditgraduallyandsmoothlydecreasedtothesizeoftheplainpartofthewhiskers.TheresultsofX-raydiffractionanalysisshowthatthecrystallinestructureoftheobtainedSiCwhiskersisβ-SiC.ItisconsideredthattheSiCwhiskersgrowviaavapor-solidmechanism.

简介：Theshapeofnanostructurehasimportanteffectsontheirproperties,thereforeinthisstudy,wehavepreparedandcharacterizedthreedifferentmorphologiesofWO3nanostructuresi.e.nanorod,nanosphereandnanoplateforsurveyingshapeeffectontheirphotocatalyticpropertiestowarddegradationofRhodamineB(RhB)dye.ObtainedresultsshowthatnanoplateWO3incomparisonwithothershasthebestphotocatalyticactivity.AccordingtoSEM,andphotocatalyticdegradationresults,thereasonforthisbehavioristhesharpedgesandcornersofWO3nanoplates.Becauseoftheirlowcoordinationnumber,atomslocatedintheedgesandcornersoftheWO3nanoplateshavemoreactivity,adsorbmoreRhBandthereforegivemorephotocatalyticactivitytotheWO3nanoplates.UsingofdifferentscavengersshowedthathydroxylradicalsaremainlyresponsibleforphotocatalyticactivityofWO3nanoplatesandnanospheresbutforWO3nanorods,superoxideradicalsarethemainphotocatalyticdegradationagents.

简介：Nowadays,licenseplaterecognitionforparkingsystemsisacriticaltasktoprovideautomaticcontrolofcustomersandpayment.Thispaperintroducesanewmethodforautomaticrecognitionoflicenseplatesofvehiclesbymathematicalmorphology.Theproposedmethodcanprovidethelicenseplatenumberoftheplatesindifferentlightconditions,colors,sizes,andinclination(angles).ThealgorithmcanrecognizethelicenseplatesofEuropeanUnionvehiclesquicklyandcorrectly.Thepatternlearningofmathematicalskeletonshashighefficiencyintheprocess.Theperformanceofthealgorithmisdemonstratedwellbythetestinaparkingcontrolsystem.

简介：ZnSnanostructureswithdifferentdimensionsandstructure-relatedpropertieswerereviewedinthispaper.Thecrystallizationofnanostructuresfrom0D,1Dto3D,aswellastheheterogonouscounterparts,wassummarizedintheaspectofzincblende,wurtzitestructure,andtheircombinations.Furthermore,thestructure-relatedenergybandsandthecorrespondingphotoelectricpropertiesofZnSnanostructureswerealsofocused,inwhichwemadeabriefsummaryoftheco-relationsbetweenphotoluminescenceandcrystallography,especiallythedefectrelatedluminescencepropertiesofZnSnanocrystal.

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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.

简介：ThediamondfilmshavebeendepositedbythehotfilamentCVDmethodonmolybdenumsubstratesfromthemixturereactantgasofacetoneandhy-drogen.Thesurfacemorphologiesoftheobtaineddiamondfilmsundervariousde-positionconditionshavebeenobservedbyscanningelectronmicroscope(SEM).Theexperimentalresultsstronglyindicatethatthesurfacemorphologiesofthere-sultingfilmshavecloselyrelatedtothedepositionconditions,i.e.,reactionpres-sure.Formolybdenumsubstrates,underthelowerreactionpressurethesurfacemorphologiesofthegrainscomprisingtheresultingfilmsmainlydisplaythesmallsinglecrystalcubo-octahedronanddoublesmallcrystalcubo-octahedron;underthehigherreactionpressure,thesurfacemorphologiesmainlydisplaythelargecauliflower-like.TheseresultsshowthattherearevariouscrystalhabitsforCVDdiamondundervariousdepositionconditions.

简介：在这篇论文，multi-scaled形态学为土地被介绍进数字处理领域地震数据。首先，我们描述探索震波的multi-scaled形态学图象分解的基本理论；第二，我们说明怎么为用二个真实例子处理的地震数据使用multi-scaled形态学。第一个例子示威压制表面波浪在预先叠地震记录使用multi-scaled形态学分解和宪法和另外的例子示威在地震记录上过滤不同干扰波浪。过滤的Multi-scaled形态学由波浪形状的详细差别把信号与噪音分开。成功的应用建议multi-scaled形态学在地震数据处理有有希望的应用。

简介：Anewcoupledfiniteelementformulationisproposedtocalculateaconformationtensormodelintwocomplexflows:aplanarcontractionflowandaplanarflowaroundasymmetricallyplacedcylinder.Thecomponentsofconformationtensorarefirstcomputedtogetherwiththevelocityandpressuretodescribethechangeofmorphologyofpolymerchaincoilsinflowfields.Macroscopicquantitiesofviscoelasticflowarethencalculatedbasedontheconformationtensor.Comparisonsbetweenthenumericalsimulationsandexperimentsforstresspatternsandvelocityprofilesarecarriedouttoprovethevalidityofthemethod.

简介：Thefocusofthisstudyistoexaminebedstabilityandmorphologyinhigh-gradientgravel-bedstreams,andthustoimproveunderstandingofthevariousparametersgoverningthesedimentflowcharacteristicsinmountainstreams.Ultimately,thisknowledgecanbeusedtodesignpseudo-naturalchannels,asinthestreamsimulationmethodofculvertdesign;withthisinmind,prototypeconditionsareevaluatedinaflumewithslopesrangingfrom3%to7%,andparticlerelativesubmergencevaryingfrom0.5to2.5forthreebedsizedistributions.Theseexperimentsaredesignedtosatisfytheconditionsofdynamicsimilarityforflowandsediment,andtheyarepreferredoverfieldmeasurementssincetheyallowahighdegreeofcontrolovertestingconditions.Itisfoundthatsteppoolbedformsarethemostubiquitousfeaturesalongthegravelbed.Anewformulaisdevelopedthatcorrelatesstepheightwiththegravel-bedsizedistribution,relativesubmergenceoftheparticles,andtheFroudenumber.Thestepspacingisfoundtoberelatedtostepheightandstreambedlongitudinalslope.Flowresistanceisalsoexamined,andaformulaisdevelopedwhichaccountsfortheresistanceduetothebedforms(formresistance),aswellastheindividualsedimentparticles(grainresistance).

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简介：Highlyefficientsheet-likeBiPO4/zeoliteandball-flower-likeBiPO4/zeolitehadbeensuccessfullysynthesizedbyastandardhydrothermalmethod.Theadditionofassistantreagentinthehydrothermalsystemispromisingtoobtainspecialmorphology.Theassistantreagent（EDTA）actsasagrowthmodifierofcrystal.Thepossibleformationmechanismsofsheet-likeBiPO4/zeoliteandball-flower-likeBiPO4/zeolitewereschematicallydiscussed.Adetailedstudyofsheet-likeBiPO4/zeoliteandball-flower-likeBiPO4/zeoliteimpactedonthephotodecolorationmethyleneblue（MB）solutionshowedthatthecompositehadahighlyreusableandstablepropertyforlong-runphotocatalyticapplication.