学科分类
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331 个结果
  • 简介:基于在液体的某些性质和在给定的条件下面形成的相应液体落下的性质之间的关联,测量设备的液体落下被利用与光电的测量监视液体样品的落下形成进程方法。液体的机械、光的特征与光纤维被探索从液体落下内部在它的形成期间。落下头电容器被利用监视液体落下的生长进程获得与液体的物理性质有关的落下卷信息。包含液体的综合性质的唯一的液体落下踪迹被产生,并且它被为不同液体,他们的液体落下踪迹是不同的实验证明。在不同液体之间的液体性质和辨别上的分析能被继续,液体落下踪迹由测量设备的液体落下获得了。

  • 标签: 精度 液滴 测量装置 光学性能
  • 简介:Numerouscellularfunctionsoccurinspatiallyandtemporallyconfinedregions.Recentstudieshaveshownthatmembrane-lessorganellesandcompartmentsinthecellareassembledvialiquid-liquidphaseseparation(LLPS).InvitroLLPSassaysusingrecombinantexpressedandpurifiedproteinsarenecessaryforustofurtherunderstandhowtheassemblyofphase-separatedcompartmentsisregulatedincells.However;uniformstandardsandprotocolsarelackingfortheseinvitrostudies.Here,wedescribeastep-by-stepprotocolcommonlyusedtoinvestigateinvitroLLPSusingpurifiedproteins.Thisprotocolincludesexpressionandpurificationofthestudiedproteins,inductionofLLPSofthepurifiedproteins,andstudiesofthebiophysicalpropertiesoftheliquiddropletsformedbyLLPS.TheseprotocolscanbeeasilyfollowedbyresearcherstoinvestigatetheLLPSbehaviorsofproteinsofinterest.

  • 标签: Phase SEPARATION Liquid droplets PROTEIN PURIFICATION
  • 简介:液体包含偶氮苯色基的水晶的gelator第一次被综合;在nematic形成自我装配的网络被用来液晶与不同特征导致液晶胶化。

  • 标签: 偶氮苯 合成 液晶 凝胶体
  • 简介:与不同特征的二剩余油的热升级在实验室规模被学习连续推迟的coking单位。目标是在液体产量和产品分发上调查象温度,反应时间和添加剂那样的进程变量的影响。73%的最大的液体收益与商业单位与69%相比被完成。这收益甚至在添加剂的效果下面被增加到75%。由模仿的真空蒸馏的液体油的分别为商业单位显示出柴油机(46.9%)的高收益,与28%相比。

  • 标签: 延迟焦化 液化领域 产品分配 石化产品 炼油工程
  • 简介:Optofluidics是光学和microfluidics(薄片上的所谓的实验室)的集成。液体的使活动在那里是一种关键技术。在为控制microscale液体的许多方法,轻使活动特别地有趣。轻使活动提供一个新奇方法控制液体的流动为生物医学并且biotechnological应用,等等……设备的复杂性和费用可以被使用完全的光控制极大地有时减少并且可能比另外的方法在操作更灵活。然而,液体的轻使活动是象optofluidics一样的一块发芽的地。有大量工作做。这里,我们系统地基于下列点为液体的轻使活动描述四机制:optoelectrowetting,photothermal效果,放射压力,感光性的物质。

  • 标签: 光流体技术 光电效应 辐射压强 感光性物质
  • 简介:相片折射的效果的一个理论处理和在液晶的nematic的联系非线性的光过程的试验性的确认被介绍。效果被归因于可以来自光电游离杂质的相片费用导致的dc空格费用域。现象被分析,在nematic液晶的相片折射度的一个理论模型被开发。新试验性的结果被发现在对理论的好同意。(编辑作者摘要)5个裁判员。

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  • 简介:Blanketsandotherin-vesselcomponentsareeasilydamagedowingtotheircircumstanceofhighradiationandhighheat.Toprotectthem,firstwalldesignshouldbeconsidered.Owingtoitshighheatremovalndself-refreshingcapability,liquidmetalfirstwallhasbeenseenasapotentialfirstwallforafusionreactorinthefuture.Blanketliquidcurtainisactuallyaspecialliquidmetalwalltoprotectblanket.

  • 标签: 第一壁 金属流体 MHD 巨变堆材料 力学效应
  • 简介:Thereactionofisocyanateswithaliphaticandaromaticaminesinthel-n-butyl-3-methylimidazoliumtetrafluoroborate(bmimBF4)ionicliquidingoodtoexcellentyieldsisdescribed.Duetoitsinsolubility,thedesiredureasolidscouldberecoveredbysimplefiltrationfromtheionicliquidafterreaction.

  • 标签: 尿素塑料 离子液体 合成 异氰酸盐 脂肪族胺 芳胺
  • 简介:Aliquidcrystalmovingpictureprojectorandmethodaredescribed.Lightincidentonaliquidcrystaldisplay-typedeviceisselectivelyscatteredortransmittedbyrespectiveportionsofliquidcrystaldisplay,andaprojectionmechanismprojectsanimageformedbyeithersuchscatteredlightorsuchtransmittedlight.Aliquidcystalmovingpictureprojectorincludesaliquidcrystaldisplayforcreatingcharacteristicsofanimage,andprojecttionopticsforprojectingimagessequentiallycreatedbythedisplay.Thedisplayincludesaliquidcrystalmaterialcapableoftemporarystoringinformationatrespectiveareas.Thetemporarystoragemaybeafunctionofchargestoringdirectlyonliquidcrystalmaterial.Amethodofprojectingpluralimagesinsequenceincludes:creatinganimageorcharacteristicsofanimageinaliquidcrystalmaterial,storingsuchimageinsuchliquidcrystalmaterial,directinglightatsuchliquidcrystalmaterial,projectingsuchimageasafunctionoflighttransmittedthroughorscatteredbysuchliquidcrystalmaterial,andcreatingafurtherimageinsuchliquidcrystalmaterialforsubsequentprojection.

  • 标签: 液晶显示器 液晶投影仪 投射光
  • 简介:UnderthesponsorshipoftheInternationalUnionofPureandAppliedChemistry(IUPAC)andChineseChemicalSociety,theInternationalConferenceonLiquidCrystalPolymerswasheldattheTwenty-FirstCenturyHotel,BeijingChina,in6-9September1994.TheconferenceChair-manandSecretarygeneralwereProfessorsQ.F.ZhouofPekingUniversityandX.J.Wangof

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  • 简介:Inthisarticletheemphasiswasgiventothediscussionoftheeffectsofdiameterratioandswirlingoninstabilitycharacterforthegas/liquidcoaxialjetusedbyLiao,etal.[1].Theresultsindicatethatthefinitediameterratiomarkedlyincreasesthemaximumgrowthrate,themostunstablewavenumber,aswellasthecutoffwavenumber.Itimpliesthatthefinitediameterratiowillleadtotheliquidjetbreakuplengthshorterandtheliquiddropsizesmaller.Theeffectoftheswirlingjetsismuchmorecomplex:fortheaxisymmetricperturbationmode,theswirlingenhancestheflowstability,forhelicalperturbation,thedominantinstabilitymodeoccursatn<0.Anditisfoundthatinlongwaveregionthereexistsanewkindofinstabilitymodesatn=1thatwasnotmentionedinLiaoetal.'sarticle.Forthisnewmode,thereappearsadominatedswirlingratioatwhichtheflowhasthemaximumgrowthrate.

  • 标签: 不稳定性特征 直径比例 旋涡比例 气液混合流 射流
  • 简介:在铝的氢内容融化在不同温度被检测。在铝的结构融化被分子的动力学调查模拟。关联功能,原子协作数字和铝的粘性融化的对的第一个山峰位置在一样的温度范围反常地被计算,他们变化了。氢吸收的机制被讨论了。从分子的动力学计算,互相依赖在之间融化结构的性质和氢吸收被获得。

  • 标签: 结构性能 吸收机制 氢含量 液态铝 分子动力学计算 分子动力学模拟
  • 简介:Heattransferinthethrustchamberisofgreatimportanceinthedesignofliquidpropellantrocketengines.Regenerativecoolingisandadvancedmethodwhichcanensurenotonlytheproperrunningbutalsohigherperformanceofarocketengine.Thetheoreticalmodeliscomplicated,itrelatestofluidbynamics,heattransfer,combustion.etc…,Inthispaper,aregenerativecoolingmodelispresented.Effectssuchasradiation,heattransfertoenvironment,variablethermalpropertiesandcokingareincludedinthemodel.Thismodelcanbeappliedtoallkindsofliquidpropellantrocketenginesaswellassimilarconstructions.Themodularizedcomputercodeiscompletedinthework.

  • 标签: 液体火箭发动机 再生冷却 热传输系数
  • 简介:Ultrasonicattenuationinliquidhydrogenhasbeenmessuredwiththepulse-echotechniqueasafunctionoftemperaturefrom13.84Kto20.50K,at45MHz.Theresultsindicatethatthetemperaturedependenceofultrasonicattenuationinliquidhydrogenismainlydeterminedbyvolumeviscosityeffect.Ultrasonicattenuatinduetovolumeviscosityisgettingmoreandmorewithcooling.Theratiobetweenvolumeviscouscoefficientandshearviscouscoefficientisfrom1.4to4.2withinthemeasuredtempera-tureregion.

  • 标签: viscosity ATTENUATION tempera VISCOUS explained HYDRODYNAMIC
  • 简介:Circulatingfreenucleicacids;cellfreeDNAandcirculatingmicro-RNA,arefoundintheplasmaofpatientswithhematologicandsolidmalignanciesatlevelshigherthanthatofhealthyindividuals.InpatientswithhematologicmalignancycellfreeDNAreflectstheunderlyingtumormutationalprofile,whilstmicro-RNAsreflectgeneticinterferencemechanismswithinatumorandpotentiallythesurroundingmicroenvironmentandimmuneeffectorcells.Thesecirculatingnucleicacidsofferapotentiallysimple,non-invasive,repeatableanalysisthatcanaidindiagnosis,prognosisandtherapeuticdecisionsincancertreatment.

  • 标签: 恶性肿瘤 血液系统 循环 核酸 游离 液体