简介：Atabularcorundum(TC)withα-Al2O3asmaincrystallinephazsehasbeenmadebyelec-tro-fusionmethod,Itsphysicalandchemicalpropertiesare:Al2O399.11%,SiO20.07%,Fe2O30.04%Na2O30.23%,granularbulkdensity3.89g/cm^3.

简介：目的：观察电缇针治疗失眠症的临床疗效。方法：对40例失眠症患者采用电缇针治疗，通过多导睡眠仪进行规范化监测，比较治疗前后睡眠结构的差异。结果：经电缇针治疗后，失眠患者S1、S2期睡眠均较治疗前明显减少，而S3、S4期和快速动眼睡眠期均较治疗前明显增加，且患者的睡眠结构治疗前后相比，差异有统计学意义P〈0．05）。结论：电缇针治疗能有效改善失眠症症状。

简介：Theliquidcrystalcompositematerialsconsistofmicrodroplersofliquidcrystalswhicharespontaneouslyformedinamatrixofapolymeratthetimeofitspolymerization.Thedirectorconfigurationinliquidcrystaldroplets.themodeloforientationofdroplets,andthecontrastratiosofacellareinvestigated.Dropletsize,spacinganddistributionarereadilycontrolledinthesematerialstoallowoptimizationofdisplaysbaseduponelectricallycontrolledlightscatteringfromtheliquidcrystaldroplets.Preliminaryexperimentalandtheoreticalstudiesofthelightscatteringandelectro-opticresponseofnewmaterialshowthatthesematerialscanoffernewfeaturessuitableforlargeareadisplaysandlightvalves.

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简介：Theabilitytomodulateanopticalfieldviaanelectricfieldisregardedasakeyfunctionofelectro-opticinterconnects,whichareusedinopticalcommunicationsandinformation-processingsystems.Oneofthemaindevicesrequiredforsuchinterconnectsistheelectro-opticmodulator(EOM).CurrentEOMsbasedonelectro-opticandelectro-absorptioneffectsoftenarebulkyandpower-inefficientduetotheweakelectro-opticpropertiesoftheirconstituentmaterials.Here,weproposeanewmechanismtoproduceanarbitrary-waveformEOMbasedonquantuminterference,inwhichbothrealandimaginarypartsofthesusceptibilityareengineeredcoherentlywithsuper-highefficiency.BasedonthisEOM,awaveforminterconnectfromthevoltagetothemodulatedopticalabsorptionisrealized.Weexpectthatsuchanewtypeofelectro-opticinterconnectwillhaveabroadrangeofapplications,includinginopticalcommunicationsandnetworks.

简介：Afiniteelement-Helmholtzintegralhybridmethodhasbeendevelopedtocalculatetheelectro-acousticperformanceofafinitelengthcylindricaltransducerimmersedinwater.Thenumericalstudyconcernedwithelectricalimpedancesandbeampatternsofthetransducerispresented.Experimentaldataareshowntosupportthenumericalstudy.

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简介：横梁偏导器主要基于电镀物品眼的分阶段执行的数组(EOPA)被描述，然后存在控制上的分析为驾驶EOPA横梁偏导器策划，基于特定的硬连线的电子学或基于在一个微控制器的软件，被做。与这些相比，一为一个多信道的EOPA横梁偏导器开车和控制系统被介绍，在哪个控制赋值与域被实现可编程的门数组(FPGA)薄片。为不同表演要求，二控制计划，有连续计划的和有平行计划的另外一个，在XilinxFPGA薄片被探索了并且很快建原型。与为EOPA横梁偏导器的控制结构，扫描588kHz和5MHz的率能分别地被到达。

简介：新奇转移功能为电镀物品眼的microring共鸣器交换的聚合物被介绍。在microring的光的共振的过程用公式被模仿。然后，结构的参数的优化被执行，并且特征被分析例如回声时间，输出光谱，操作电压，插入损失和串音被分析。模拟结果证明设计设备展出有利切换的功能。CLC数字TN256这个工作被中国(60576045)和国家鈥?的国家科学基金支持73鈥?工程(2006CB302803)

简介：InstitutionofModernPhysics(IMP)hasdesigned,fabricatedandinstalledthefirstSRFcavityelectropolishingsystemofChina.It’ssizedfor1.3GHzSRFcavities,andalsocanworksformultiplecellcavitieswithfurtherupgradeofstructure.

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简介：Thecreepeffectofsuspensionsinelectro-dynamicloudspeakerswasmodeledbasedonfractionalorderderivatives.Thefractionalstandardlinearsolid(FSLS)modelwaspresentedbysubstitutingtheAbeldashpotforNewtondashpotinStandardLinearSolid(SLS)model.TheelectricalimpedanceaswellasthetransferfunctionbetweendiaphragmdisplacementandinputvoltageofthetwotestedmidrangeloudspeakerswasmeasuredbyKlippellaseranalyzersystem,andthemodelparameterswereidentifiedbytheleast-mean-squaremethod.BycomparingthefittingresultsofFSLSmodelwiththeothertwoclassicalmodels-4ParameterLogarithmicmodelandSLSmodel,theresultsshowthattheFSLSmodelcanrightlypredictthefrequencydependentcompliancelossfactorandyieldhigheraccuracyformodelingthecreepeffectinloudspeakersuspensions.

简介：Thispaperaddressesanonlinearfeedbackcontrolproblemforthechaoticarchmicro-electro-mechanicalsystemwithunknownparameters,immeasurablestatesandpartialstate-constraintsubjectedtothedistributedelectrostaticactuation.Toreflectinherentpropertiesanddesigncontroller,thephasediagrams,bifurcationdiagramandPoincaresectionarepresentedtoinvestigatethenonlineardynamics.TheauthorsemployasymmetricbarrierLyapunovfunctiontopreventviolationofconstraintwhenthearchmicro-electro-mechanicalsystemfacessomelimits.AnRBFneuralnetworksystemintegratingwithanupdatelawisadoptedtoestimateunknownfunctionwitharbitrarilysmallerror.Toeliminatechaoticoscillation,aneuro-adaptivebacksteppingcontrolschemefusedwithanextendedstatetrackingdifferentiatorandanobserverisconstructedtolowerrequirementsonmeasuredstatesandprecisesystemmodel.Besides,introducinganextendedstatetrackingdifferentiatoravoidsrepeatedderivativeforthevirtualcontrolsignalassociatedwithconventionalbackstepping.Finally,simulationresultsarepresentedtoillustratefeasibilityoftheproposedscheme.

简介：影印石版术实验与electrooptically悦耳的阶段步借助于一个光阶段面具被执行。阶段面具由转换铁电体领域的六角形的格子在z切割锂niobate底层上制作了的2-dimensional组成。电镀物品光学地悦耳的阶段步在转换领域之间，被一个外部电场的应用程序经由透明电极沿着水晶的z轴获得。氩激光的瞄准横梁通过阶段面具和近的领域紧张模式，在Talbot长度并且为应用电压的不同价值的不同飞机，被用于光刻的实验。初步的结果被显示出，进一步的应用被讨论。这研究部分是的CLC数字TN305在FIRB工程以内由MIUR资助了(没有。RBNE01KZ94)并且部分由MIUR工程(号码77DDN.1105/2002)。

简介：目的：探讨电针防治腰椎间盘移位的机理。方法：75只大鼠经手术造成椎间盘移位模型，成功后分为电针组，西药组，针药组，模型对照组和正常对照组，分别给予相应处理。RTPCR法测定椎间盘组织中iNOSmRNA的表达。结果：模型组犬鼠椎间盘组织iNOSmRNA表达与正常组之间比较存在显著性差异（P〈0．01）；电针组、西药组、针药组对大鼠椎间盘组织iNOSmRNA表达均受抑制，与模型组比较有显著性差异（P〈0．01）。结论：电针具有抑制椎间盘组织内iNOS的作用。

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简介：丝弦剧院位于石家庄商业区与生活区之间，剧院具备现代化演出功能和专业戏曲演出的硬件需求，内设专业的服装室、化妆窀、贵宾接待室，观众坐席765座，其中楼下455座，楼上310座，可承揽中大型舞台演出活动。

简介：Byusingthewell-developedintegraltransformmethodology,thedynamicresponseofstressandelectricdisplacementaroundafinitecrackinaninfinitepiezoelectricstripareinvestigatedunderarbitrarydynamicanti-planeloads.Thedynamicstressintensityfactorsandelectricdisplacementareobtainedanalytically.Itisshownthatthedynamiccrack-tipstressandelectricfieldstillhaveasquare-rootsingularity.Numericalcomputationsforthedynamicstressintensityfactorshowthattheelectricloadhasasignificantinfluenceonthedynamicresponseofstressfield.Thehighertheratioofthecracklengthtothewidthofthestrip,thehigherthepeakvalueofthedynamicstressintensityfactoris.Ontheotherhand,thedynamicresponseoftheelectricfieldisdeterminedsolelybytheappliedelectricload.Theelectricfieldwillpromoteorretardthepropagationofthecrackdependingonthetimeelapsesincetheapplicationoftheexternalelectro-mechanicalloads.

简介：州空间的方法被采用评估形式的参数机能上地分级，magneto-electro-elastic，和multilayered盘子。基于机能上地分级的材料的性质是指数的假设，作为州的变量拿结构的排水量和压力的结构的颤动的州的方程被导出。自然频率和形式的形状基于在这篇论文给的州的方程和边界条件的一般答案被计算。有弹性的排水量上的机能上地分级的指数的因素的影响，电，并且结构的磁场被与不同的叠假定一个三明治板模型讨论序列。

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