简介：

简介：绝缘的常数和绝缘的损失，以及silylated纤维素的绝缘的松驰的活化能从10～50度C在频率范围10**5以内被测量到10**7Hz和温度范围。测试样品是有乙烯肼的激活的纤维素，与氢氧化钠并且在silylation前后使纤维素失去活性。大小用multi-deka-meter被执行。纤维素分子是处理比与氢氧化钠与乙烯肼激活的更多。通常，silylation引起绝缘的经常、绝缘的损失的显著减少，同时，silylated样品与氢氧化钠和乙烯肼与棉绒ers的预告的处理被影响。(编辑作者摘要)28个裁判员。

简介：Anopen-endedcoaxiallinereflectionmethodespeciallysuitableformeas-uringthedielectricpropertiesofbiologicaltissueinvivoisdescribed.Thismethodofferstheadvantageofnotrequiringanyspecialpreparationofthesamplestobemeasuredbutaclosecontactwiththeopenendofacoaxialline.Itis,therefore,veryconvenienttoacquirealargenumberofmeasurementdatainbroadbandrapidly.Themethodmayalsobeusedtomeasurethepropertiesofothersubstances.ThemeasuringsystemconsistsofanetworkanalyzercontrolledbyamicrocomputerandcalibratedbyusingANAproceduretoelimi-hatetheinflunceoferrornetworkintroducedbytheadapter,someconnectors,etc.Inor-dertoreachhigheraccuracy,theiterativemethodisusedtodeterminetheparametersoftheequivalentcircuit.Measurementsofpermeativitiesofsomelivingtissueshavebeenper-formedinthefrequencybandof0.5-2GHz.Comparedwiththeresultsknowninsomepapers,thevalidityofthismethodhasbeenconfirmed.Thedifferenceindielectricproper-tiesbetweenlivinganddeadtissues,andthetissuepermeativites(ε)versusfrequencyanddurationofmeasurementafterdeathhavealsobeenmeasured.

简介：Thesteady-stateelectricalconductivity,aswellasthedielectricpropertiesbetween2×10-4Hzand100kHz,andat1GHz,arereportedforureasecompressedpowdersamplesoflowhydration.Theresultsshowthatthelarge,lowfrequencydielectricdispersion,knownasα-dispersion,isduetothebuild-upofaspacechargeofprotonsatthesample-electrodeinterfaces.Asmallerdispersion,appearingathigherfrequencies,isconcludedtobeassociatedwithhinderedmotionsofthepeptideresiduesinthemolecularstructureofurease.Theextentofthesepolypeptidebackbonemotionsisshowntobestronglydependedontheextentofenzymehydration.Thisworkiscontributedtothede-velopmentofconductimetricbiosensors.

简介：Inthispaper,wepresentamodifedmodeldescribingtheconstitutiverelationofviscoelasticdielectricelastomer(DE).Theuniformuniaxialtension-recoveryexperimentwascarriedoutatdiferentstretchingrates.BasedonYeohhyper-elasticmodel,model-fttingapproachisputforwardtoobtaintherelationshipbetweenparametersofYeohmodelandstretchingrate,thusthemodifedmodelwasobtained.Fromtheapproximaterelationshipbetweenharmonicmotionanduniformreciprocatingmotion,thestress–straincurveintherecoveryprocesswasalsoidentifedthroughthehysteresisbetweenstressandstrain.Themodifedmodel,withconciseformandevidentphysicalconcept,candescribethestrongnonlinearbehaviorbetweendeformationandmechanicalstressofthematerialinacommonstretchingraterange(from0.01s1to0.8s1atleast).Theaccuracyandreliabilityofthemodifedmodelwasexamined.

简介：Tocleantheexhaustemissionsasoneofthemostimportanttasksinpollutioncontrol,astudyonthetreatmentofengineemissionswithdischargeassistancewasreported.ADBDplasmasourceshapedingridandcylinderwasexaminedindifferentengineoperationalmodestoreducetheNO_xcontentofdieselengineexhaust.Thecompositionoftheexhaustgasesandchemicalreactionsinitiatedbythedischargewereanalyzed.Thedischargeh'equencyhadacrucialimpactonthedevice'sperformanceandgastreatment.Thevoltagesappliedtothedischargegapcouldalterthechemicalreactionsoccurringinthetreatedgases,whichwereindicatedbytheNOtoNO_2ratio.Theoperationofthesystemwasstudiedatfrequenciesrangingfrom400Hzto16kHz.

简介：Thedielectricconstant,ε',andthedielectricloss,ε",forsomeselectedleadborateglasseswithinthefrequencyband105to107Hzandthetemperaturerange(20～50)℃weremeasured.Thedielectricdispersionandthedielectriclossabsorptionbandswereobserved,therelaxationtime,theactivationenthalpyandentropychangeofthedielectricrelaxationwerecalculated.Theresultsobtainedwerediscussedandcorrelatedtotheinternalnetworkstructureoftheglassesstudied.

简介：

简介：我们在场为绝缘的弹性体(DE)的一个有限元素方法变换器基于DE的非线性的域理论。方法在商业有限元素软件ABAQUS被实现，它提供一个大图书馆描述有限弹性的功能。这个方法能被用来与复杂配置并且在不同类的变丑下面解决DE变换器的机电的联合问题。

简介：转变地方法(TFM)被开发估计有任意的形状的水晶composites的各向异性的绝缘的性质和水晶包括的绝缘的性质，绝缘的轴与各向异性的水晶的那些其校长不同矩阵。包括形状引起的复杂边界值问题被介绍一个转变电场进水晶composites区域避免，并且有效各向异性的绝缘的回答以转变地被提出。而且，数字结果证明水晶composites的有效各向异性的绝缘的回答周期性地作为在包括和矩阵水晶材料的主要的绝缘的轴之间的旋转角度的功能变化。它被发现那更逍遥法外包括形状导致的包括体积部分有效各向异性的绝缘的回答上的深刻效果。

简介：与努力热的环(HTL)求和技术，我们计算难gluon在quark-gluon血浆(QGP)激动的绝缘的功能。我们在像空间的区域p0/p∈的节发现那[0.78，0.95]，绝缘的功能曲线上有二极值结构，当没有这些性质，在HTL近似的绝缘的功能单调地减少时。通过绝缘的函数的想象的部分的分析，我们断定在这个区域的绝缘的函数的字符反映抑制的四轮马车的效果。

简介：Polarizationmanipulationisessentialindevelopingcutting-edgephotonicdevicesrangingfromopticalcommunicationdisplaystosolarenergyharvesting.Mostpreviousworksforefficientpolarizationcontrolcannotavoidutilizingmetalliccomponentsthatinevitablysufferfromlargeohmiclossandthuslowoperationalefficiency.ReplacingmetalliccomponentswithMieresonance-baseddielectricresonatorswilllargelysuppresstheohmiclosstowardhigh-efficiencymetamaterialdevices.Here,weproposeanefficientapproachforbroadband,highqualitypolarizationrotationoperatingintransmissionmodewithall-dielectricmetamaterialsintheterahertzregime.Byseparatingtheorthogonalpolarizationcomponentsinspace,weobtainrotatedoutputwaveswithaconversionefficiencyof67.5%.Theproposedpolarizationmanipulationstrategyshowsimpressiverobustnessandflexibilityindesigningmetadevicesofbothlinear-andcircular-polarizationincidences.

简介：Thispaperdiscussestheconversionofnitricoxide(NO)withalow-temperatureplasmainducedbyacatalyticpacked-beddielectricbarrierdischarge(DBD)reactor.Aluminaoxide(Al_2O_3),glass(SiO_2)andzirconiumoxide(ZrO_2),threedifferentsphericalpackedmaterialsofthesamesize,wereeachpresentintheDBDreactor.TheNOconversionundervaryinginputvoltageandspecificenergydensity,andtheeffectsofcatalysts(titaniumdioxide(TiO_2)andmanganeseoxide(MnOx)coatedonAl_2O_3)onNOconversionwereinvestigated.TheexperimentalresultsshowedthatNOconversionwasgreatlyenhancedinthepresenceofpackedmaterialsinthereactor,andthecatalyticpackedbedofMnOx/Al_2O_3showedbetterperformancethanthatofTiO_2/Al_2O_3.Thesurfaceandcrystalstructuresofthematerialsandcatalystswerecharacterizedthroughscanningelectronmicroscopyanalysis.ThefinalproductswereclearlyobservedbyaFouriertransforminfraredspectrometerandprovidedabetterunderstandingofNOconversion.

简介：Viscoelasticityandtemperaturecansignificantlyafecttheperformanceofadielectricelastomer.Inthecurrentstudy,weuseathermodynamicmodeltodescribetheefectoftemperatureandviscoelasticityontheelectromechanicalresponseundergoingacyclicelectricloadbytakingintoaccountofthetemperaturedependentdielectricconstant.Becauseofthesignificantviscoelasticityinthedielectricelastomer,thedeformationandthenominalelectricdisplacementcannotkeepinphasewiththeelectricfieldatlowfrequencies.Theresultsshowthatthemagnitudeofthecyclicelectromechanicalactuationstrainincreaseswiththedecreaseofthetemperatureanddecreaseswiththeincreasingfrequency,andviscoelasticitycanresultinsignificanthysteresisfordielectricelastomersunderarelativelowtemperatureandalowfrequency.

简介：ＤＩＥＬＥＣＴＲＩＣＰＲＯＰＥＲＴＩＥＳＯＦＨＵＭＡＮＢＲＥＡＳＴＣＡＲＣＩＮＯＭＡＡＮＤＳＵＲＲＯＵＮＤＩＮＧＴＩＳＳＵＥＳＤＩＥＬＥＣＴＲＩＣＰＲＯＰＥＲＴＩＥＳＯＦＨＵＭＡＮＢＲＥＡＳＴＣＡＲＣＩＮＯＭＡＡＮＤＳＵＲＲＯＵＮＤＩＮＧＴＩＳＳＵＥ...

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简介：ＡＮＡＬＹＳＩＳＯＦＤＩＥＬＥＣＴＲＩＣＲＥＬＡＸＡＴＩＯＮＰＲＯＰＥＲＴＩＥＳＯＦＣＥＬＬＳＡＮＤＴＩＳＳＵＥＳＡＴＲＡＤＩＯＦＲＥＱＵＥＮＣＩＥＳＡＮＡＬＹＳＩＳＯＦＤＩＥＬＥＣＴＲＩＣＲＥＬＡＸＡＴＩＯＮＰＲＯＰＥＲＴＩＥＳＯＦＣＥＬＬＳＡＮＤ...

简介：Inthisstudyatmosphericpressuredielectricbarrierdischarge(DBD)plasmahasbeenemployedforsterilizingdryturmericpowders.A6kV,6kHzfrequencygeneratorwasusedtogenerateplasmawithAr,Ar/O2,He,andHe/O2gasesbetweenthe5mmgapoftwoquartzcoveredelectrodes.Thecompletesterilizationtimeofsamplesduetoplasmatreatmentwasmeasured.Themostimportantcontaminantofturmericisbacillussubtilis.Theresultsshowthattheshorteststerilizationtimeof15minisachievedbyexposingthesamplestoAr/O2plasma.Survivalcurvesofsamplesareexponentialfunctionsoftimeandtheadditionofoxygentoplasmaleadstoasignificantincreaseoftheabsolutevalueoftimeconstantofthecurves.MagnitudesofproteinandDNAintreatedsampleswereincreasedtoasimilarvalueforallsamples.Taste,color,andsolubilityofsampleswerenotchangedaftertheplasmatreatment.

简介：

简介：ＴＨＥＤＩＥＬＥＣＴＲＩＣＰＲＯＰＥＲＴＩＥＳＯＦＨＵＭＡＮＦＥＴＡＬＯＲＧＡＮＴＩＳＳＵＥＳＡＴＲＡＤＩＯＡＮＤＭＩＣＲＯＷＡＶＥＦＲＥＱＵＥＮＣＩＳＥＴＨＥＤＩＥＬＥＣＴＲＩＣＰＲＯＰＥＲＴＩＥＳＯＦＨＵＭＡＮＦＥＴＡＬＯＲＧＡＮＴＩＳＳＵＥＳＡ...