简介：Linearpolysiloxaneswithpendantbenzo-15-crown-5moietieshavebeensynthesizedfrom3′-or4′-allylbenzo-15-C-5viahydrosilylationofmethyldichlorosilane,followedbypolycondensationwithsilanol-terminatedpolydimethylsiloxane.Itwasfoundthatthepolysiloxanescouldbeusedascarriersinbulkliquidmembranetotransportions.Factorsinfluencingtransportratehavebeeninvestigated.

简介：OnDecember12,2013theproject'Developmentandcommercialapplicationofcontinuousliquid-phasedieselhydrotreating(SLHT)technology'jointlyundertakenbyRIPP,SEI,theShijiazhuangRefiningandChemicalCo.(SRCC)andtheAnqingPetrochemicalCo.haspassedthetechnicalappraisalorganizedbytheScienceandTechnologyDivisionofSINOPECinBeijing.

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简介：Thevibrationresponseofafree-hangingflexibleriserinducedbyinternalgas-liquidslugflowwasstudiedexperimentallyinasmall-diametertubemodelbasedonFroudenumbercriterion.Theflowregimeinacurvedrisermodelandtheresponsedisplacementsoftheriserweresimultaneouslyrecordedbyhighspeedcameras.Thegassuperficialvelocityrangesfrom0.1m/sto0.6m/swhiletheliquidsuperficialvelocityfrom0.06m/sto0.3m/s.Severesluggingtype3,unstableoscillationflowandrelativelystableslugflowwereobservedintheconsideredflowrates.Severesluggingtype3characterizedbyprematuregaspenetrationoccursatrelativelylowflowrates.Boththecycletimeandsluglengthbecomeshorterasthegasflowrateincreases.Thepressureattheriserbaseundergoesalongerperiodandlargeramplitudeoffluctuationascomparedwiththeothertwoflowregimes.Additionally,severesluggingleadstothemostvigorousin-planevibration.However,theresponsesintheverticalandhorizontaldirectionsarenotsynchronized.Theverticalvibrationisdominatedbythesecondmodewhilethehorizontalvibrationisdominatedbythefirstmode.Similartothevortex-inducedvibration,threebranchesareidentifiedasinitialbranch,build-upbranchanddescendingbranchfortheresponseversusthemixturevelocityofgas-liquidflow.

简介：Microstructuresandmechanicalpropertiesoftransientliquidphase(TLP)bondedmagnesiummetalmatrixcomposite(MMC)jointsusingcopperinterlayerhavebeeninvestigated.Withanincreaseofbondingtimesfrom5minto50minatbondingtemperatureof510℃,theaverageconcentrationofcopperinthebondedzonedecreased,themicrostructureinthezonechangedfromCu,α-MgandCuMg2toα-Mg,CuMg2andTiC,andmechanicalpropertiesofthejointincreased.Theshearstrengthofthejointbondedat510℃for50minreached64MPaduetothemetallurgicalbondingofthejointandimprovingitshomogeneityofcompositionandmicrostructure.ItisfavorabletoincreasethebondingtimeforimprovingmechanicalpropertiesofTLPbondedmagnesiumMMCjoint.

简介：Neutronusuallyappearswithgamma,whichisrequiringthedetectorhasthecapabilityofngammadiscrimination.Pulseshapediscrimination(PSD)isacommonapproachofn,gammajudgment,butrequiredacomplexprocesstoselectasuitablediscriminationfactor,andpoorperformanceinthelowenergyrange.AmethodbasedonthetimeintervalofadjacentSignalswasdisruptedandadoptedtocomparetopulseshapediscriminationinthefastneutrondetectionmethod.AgoodagreementbetweentheadoptedmethodandPSDmethodwasachieved,includingthetotalcountratioandneutroncountratio.Thecomparisonprovesthecorrectnessofthetheoreticalderivationandvalidatesthemethodinpractice.TheadvantagesandlimitationsofthemethodbasedontimeIntervalofadjacentsignalswereanalyzed.Themethodprovidesaneffectivewaytoconfirmthecalibrationoftheneutrondetectionofaliquidscintillationdetector.Also,asasimplewayonlyrequiringthetimeinformationaboutevents,thedescribedmethodhaslargeapplicationpotentialinsomecaseoffastneutronfluxorintensitymeasurement.

简介：为测量处理方法的一幅图象即时二维(2D)在高水泡数字密度的本地空部分被建议。它基于计算在水泡羽毛图象和真实空部分的局部地平均的亮度之间的关联。方法从设想的图象用本地空部分的2D分发被测试，在在局部地平均的亮度和设计虚空部分之间的关联被在各种各样的条件下面介绍水泡图象的重叠概率的理想导出的地方。这研究被用来与方面比率of1.0学习冒泡的流动的行为1.5，和2.0。现在的方法被用于即时测量。为有产生流动率的三个不同水泡的三不同方面比率的水泡羽毛的空部分在冒泡的流动的行为上为水泡的效果的澄清被测量。煤气的流动率上的空部分的相关性被测量并且与其它相比源于文学。在我们的实验的范围，坦克的方面比率不仅影响羽毛的结构，而且在坦克的煤气的流动率影响羽毛的结构，这被观察。

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简介：这研究向动人的表面为三维的麦克斯韦液体集中于热和集体流动的Cattaneo-Christov理论。有可变热电导率的不可压缩的laminar流动被考虑。流动产生由于表的双向拉长。热和集体运输的联合现象被说明。热和集体散开的Cattaneo-Christov模型被用来开发精力和集体种类的表情。在集体种类方程的一阶的化学反应术语被考虑。边界层假设导致管理数学模型。homotopic模拟被采用设想无尺寸的流动方程的结果。速度，温度，和集中的图显示出不同产生参数的效果。一个数字基准被介绍设想计算结果的会聚的价值。结果证明集中和温度地为热和集体散开的Cattaneo-Christov理论被腐烂。

简介：为拳头预定准备一主要固态包括1-methyl-3-propylimidazolium碘化物(MPII)的高有效的电镀物品传导性的材料，benzimidazole(双性人)，碘和锂碘化物被报导。在这电解质，双性人充当不仅添加剂而且gelators。与它的重要电气化学的性质，3.07%的全面效率不到AM1.5被完成(100mW/cm2)。

简介：Polymerizable离子的液体共聚物PMMA-co-BVIm-Br被激进的聚合技术综合，并且由Fourier变换描绘了红外线的spectrometryFTIR，<啜class=“a-plus-plus”>1H原子磁性的回声<啜class=“a-plus-plus”>1H-NMR和胶化浸透层析GPC。产生共聚物被用来经由一个阶段倒置方法准备polyvinylidene氟化物PVDF混合膜。多型性，表面wettability和混合膜的希腊语的第六个字母潜力上的共聚物的效果被ATR-FTIR，接触角度仪器和希腊语的第六个字母潜力分析器调查。扫描电子显微镜学SEM和SEMedition也被使用调查形态学和制作的膜的表面元素变化。结果显示那PMMA-co-BVIm-Br共聚物在让混合膜在试验性的pH范围期间有积极表面的膜的表面上存在。共聚物也赞成在PVDF膜的水晶阶段的形成。接触角度实验显示那PMMA-co-BVIm-Br共聚物能交换混合膜的wettability从对吸水由交换Br恐水病<啜class=“a-plus-plus”>有PF的阴离子<潜水艇class=“a-plus-plus”>6<啜class=“a-plus-plus”>。与纯PVDF膜相比，混合膜的水流动和水恢复流动显然被提高。从流动恢复比率FR和全部的犯规比率R的结果<潜水艇class=“a-plus-plus”>t都建议混合膜有好犯规反的性质。

简介：Ahigh-efficiencytechniqueforopticalvortex(OV)generationisproposedanddemonstrated.Thetechniqueisbasedonliquidcrystalforkgratingswithspace-variantazimuthalorientations,whicharelocallycontrolledviapolarization-sensitivealignmentlayers.Thankstotheopticalrewritabilityofthealignmentagentandthedynamicimagegenerationofthedigitalmicro-mirrordevice,forkgratingscanbeinstantlyandarbitrarilyreconfigured.Correspondingopticalvorticescarryingarbitraryazimuthalandradialindicesaredemonstratedwithaconversionefficiencyof98.5%,exhibitingfeaturesofpolarizationcontrolandelectricalswitching.ThetechniquemaypaveabrightroadtowardOVgeneration,manipulation,anddetection.

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简介：AnExperimentalinvestigationonthebehaviorandcharacteristicsofinterfacialwavesindownwardinclinedrectangularchannelwasconducted.Theinterfacialwavesweretracedandmeasuredbyusingconductancetechnique.Thewavepatternsweredistingushedanddefined.Thecharacteristicsoftheinterfacialwaves.suchastime-averagedfilmthickness,waveheight,wavepropagationspeed,wavelengthandwavefrequency,weresystematicallyexaminedintermsofgasandliquidsuperficialvolumetricfluxes.Theeffectoftheinclinationandflowchannelgeometryofthetestsectionontheinterfacialwavewasalsoinvestigated.

简介：Theseparationofenantiomersofaseriesofeighteennovelnitrogenmustardlinkedphosphoryldiamidederivativeswasinvestigatedonthepreparedphenylcarbamatederivativeβ-cy-clodextrinbondedphaseinnormal-phaseHPLC.Someoftheenantiomerscouldbeseparatedinbaseline.Thechiralrecognitionmechanismwasalsosuggestedfortheseparationofchiralphosphorusorganiccompounds.

简介：<正>1IntroductionTheundergroundbrineresourcesdistributingwidelyinSichuanBasin,Chinahavedrawnworldwideattentionduetotheirunusualelementabundanceandexcellentquality.

简介：水晶的Au5Si2/Si异质接面nanowires(Au5Si2/SiNWs)被热蒸发的SiO粉末在一个低真空系统在厚黄金涂的硅底层上获得。生产Au5Si2/Si异质接面的结构分析被采用一台传播电子显微镜(TEM)和一个选择区域执行电的衍射计。化学作文被纳入TEM的一个精力散的X光分光镜学习。一个二拍子的圆舞生长模型被建议描述Au5Si2/SiNWs的形成。在第一步期间，水晶的SiNWs经由在相对高的温度把帮助氧化物的生长过程与vapour-liquid-solid模型相结合的生长机制被形成。在第二步，preformedSiNWs的温度减少和减少片断与残余Au反应由一个solid-liquid-solid过程形成单个水晶的Au5Si2nanowires。现在的工作应该基于nanowires为未来合成和高质量的金silicidenanowires和微电子设备的研究是有用的。

简介：Molecularlyimprintedpolymers(MIPs)werepreparedbythebulkpolymerizationusingcrystalvioletasthetemplatemolecule,andthemethacrylicacidandethyleneglycoldimetheacrylateasfunctionalmonomerandcross-linker,respectively.Systematicinvestigationsofsyntheticconditionswereconducted.Thesurfacemorphologyandrecognitionmechanismoftheobtainedpolymerswerestudiedusingscanningelectronmicroscopeandspectrophotometricanalysis.MIPsshowedhighaffinitytotemplatemoleculeandweresuccessfullyappliedasspecialsolid-phaseextractionsorbentforselectiveextractionofcrystalvioletfromnaturalseawater.Anoff-linemolecularlyimprintedsolid-phaseextraction(MISPE)methodfollowedbyhigh-performanceliquidchromatographywithdiodearraydetectionfortheanalysisofcrystalvioletwasalsoestablished.MISPEcolumnshavegoodrecoveriesforcrystalvioletstandardsolutionsandgoodlinearitywasobtainedovertheconcentrationrangeof0-200μgL-1(R2>0.99).Finally,twonaturalseawatersampleswereinvestigated.TherecoveriesofspikedseawaterontheMISPEcolumnswerefrom44.47%to62.34%,therelativestandarddeviation(n=3)beingintherangeof2.89%-5.96%.

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