简介：A1-Dfluidmodelforhomogeneousdielectricbarrierdischarge(DBD)inheliumispresented,aimedatunravelingthespatial-temporalcharacteristicsoftwobasicdischargeregimes:single-breakdownandmulti-breakdowndischarges.Dischargecurrents,gapvoltages,chargedensities,electrontemperatureandelectricfieldprofilesofthetworegimesmakeitclearthatthesetworegimesarequalitativelydifferent.Itisfoundthatthemulti-breakdowndischargehasamorehomogeneousfluxondielectricscomparedtothesingle-breakdowndischarge.

简介：Apoptosiscanbetriggeredbyavarietyofstimuliincludingdeathfactors,anti-cancerdrugsandfactor-deprivation.Theseapoptoticcellsareswiftlyphagocytosedbymacrophagestopreventthereleaseofnoxiousorinflammatorymaterialsfromdyingcells.ThemolecularanalysisofFasligand(adeathfactor)-inducedapoptosisindicatedthatacascadeofproteases(caspases)isactivatedduringthisprocess,whicheventuallyactivatesaspecificDNase(caspase-activatedDNase).CADexistsasacomplexwithitsinhibitor(ICAD)inproliferatingcells.Whenthecellsaretriggeredtoapoptosis,caspases,inparticularcaspase3,inthedownstreamofthecaspasecascadecleaveICAD,whichreleasesCADtocauseDNAdegradationinnuclei.

简介：Laser-inducedbreakdownspectroscopy（LIBS）isananalyticaldetectiontechniquebasedonatomicemissionspectroscopytomeasuretheelementalcomposition.LIBShasbeenextensivelystudiedanddevelopedduetothenon-contact,fastresponse,highsensitivity,real-timeandmulti-elementalde-tectionfeatures.ThedevelopmentandapplicationsofLIBStechniqueinAsiaaresummarizedanddiscussedinthisreviewpaper.TheresearchersinAsiaworkondifferentaspectsoftheLIBSstudyinfundamentals,dataprocessingandmodeling,applicationsandinstrumentations.Accordingtothecurrentresearchstatus,thechallenges,opportunitiesandfurtherdevelopmentofLIBStechniqueinAsiaarealsoevaluatedtopromoteLIBSresearchanditsapplications.

简介：AnewLDMOSTstructure,namedB-LDMOSTthathasaburiedlayerunderthedrainisproposed.Theburiedlayerisnotconnectedtothedriftregion,soitcanoptimizetheverticalfielddistributionandincreasebreakdownvoltage.TheanalysisandthesimulatedresultsshowthatB-LDMOSTcanincreasebreakdownvoltage,withalmostnegligibleinfluenceontheotherparameterssuchason-resistance,switchingtime,andsoon.

简介：我们由导致激光的故障光谱学(解放)的炸药的察觉上的最近的工作在这份报纸被考察。我们学习了器官的炸药的导致激光的血浆的物理机制，TNT。在单个光子的刺激下面的TNT的解放系列用MATLAB被模仿。碳，氢，氧，和氮对血浆温度的原子排放线紧张的变化也被模仿。我们也调查普通无机的爆炸、黑粉末的解决时间的解放系列，在二种包围气氛，表情和氩，并且发现黑色的O原子排放线SBR的最大的价值搽粉发生在596ns的门延期。我们的工作的另一个焦点在使用象原则部件分析(PCA)和部分最少的广场判别式分析(PLS-DA)那样的chemometic方法把器官的炸药与象塑料那样的器官的材料区分开来上。为分类的一个PLS-DA模型被造。TNT和塑料的七种类型被选择为样品测试模型。试验性的结果证明解放结合了chemometric技术有能力从塑料区别器官的炸药。

简介：Theenergytransmissionofthelongmicrowavepulseforthefrequencyof2.45GHzand5.8GHzisstudiedbyusingtheelectronfluidmodel,wheretheratecoefficientsarededucedfromtheBoltzmannequationsolvernamedBOLSIG+.Thebreakdownthresholdsfordifferentairpressuresandincidentpulseparametersarepredicted,whichshowgoodagreementwiththeexperimentaldata.Belowthebreakdownthreshold,thetransmittedpulseenergyisproportionaltothesquareoftheincidentelectricfieldamplitude.Whentheincidentelectricfieldamplitudehigherthanthebreakdownthresholdincreases,thetransmittedpulseenergydecreasesmonotonouslyatahighairpressure,whileatalowairpressureitfirstdecreasesandthenincreases.Wealsocomparethepulseenergytransmissionforthefrequencyof2.45GHzwiththecaseof5.8GHz.

简介：Wereportsingle-shotdamagethresholdasafunctionofpulseduration(50-900fs)forMgF2/ZnS800-nmomnidirectional-reflectionfilm,interferencefilter,andgoldfilm.Theresultsindicatethatthedamagewithultrashortpulseisnonthermal,whichisdifferentfromthatwithlongpulse.Additionally,theablationcraterdepthsof45°high-reflectionfilmandinterferencefilterarepresented.Alogarithmicrelationbetweentheablationdepthandpulsefluence,whichissimilartothatoftransparentmaterials,isfound.

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简介：我们开发一个系统在我们的实验室用导致激光的故障光谱学(解放)测量无准备的样品的元素的作文，它能在固体，液体和喷雾器被用于元素的决心。包括激光，样品房间和察觉，对乐器学的描述被简短讨论跟随。在气压的铝的解决时间的解放被介绍。在结束，可能性和这种技术的以后的使用简短被讨论。

简介：管理顾客是必要的多样的愿望并且在生产在竞争并且最后为幸存保持生产费用尽可能低。在为不同产品生产分享资源是完成这个目标的一个重要方法。在生产使用一个普通过程的优点在文学被说。然而，数学模型或概念的模型不是足够的。这份报纸的主要目的是在质量和故障无常下面为multiproduct和多级式的生产开发数学模型。过程公共的想法在建议模型被合并。模型被在稳定、完美的生产环境下面从更早的MRPII和建议模型的及时要求时间表的一个马来西亚公司和比较收集的主要数据验证。结果的可估计的集中被观察。然而，建议模型在一个时间框架关于部分的可得到的地点正在带另外的信息。在确认以后，在无常下面的费用，能力和要求时间表上的过程公共的效果被检验。在生产的普通过程的使用以生产费用总是比非公共情形好，这被观察。然而，当系统受不了故障和一个优秀问题时，为公共图案的能力要求的增加为一个理想的系统是更高的，当它是更少时。

简介：Lens-to-sample距离，延期时间，大气的状况，激光脉搏精力，等等在导致激光的故障光谱学的分析表演上有明显的效果。在这份报纸，这些参数详细地被调查，我们将解释他们怎么在分析表演上有影响。结果证明在样品表面下面的焦点的飞机能改进精确和察觉限制，并且延期时间应该根据敏感和精确性被决定。光谱线紧张比氦，氮和空气在氩是更强壮的气体环境。脉搏精力应该超过能产生血浆的精力阀值(大约50mJ)，并且精力不应该超过大约300mJ避免血浆防护。分别地在最佳参数，C的集中亲戚标准差，Si，Mn，P，S，Ni，和为被测量11次的低合金的钢(第11278期样品)的Cr下面是2.37%，2.18%，2.23%，7.8%，9.34%，1.92%，和2.13%并且为纯钢的C，Si，Mn，P，S，Ni，和Cr的察觉限制分别地是0.0045%，0.0072%，0.0069%，0.0027%，0.0024%，0.0047%，和0.0024%。

简介：Epoxyresinlaminateontowhichapairofcopperfoilwasprintedwasemployedastestsamples.Thesampleswereplacedinanartificialatmosphericchamber,whichwasvacuumedbyarotarypumpfrom100kPato5kPa.ThemagneticfieldwasproducedbypermanentmagnetsthatwereassembledtomakeE×Bdriftawayfrom,intoandparalleltothesamplesurface,respectively.Magneticfluxdensitywasadjustedat120mT,180mTand240mTrespectively.Byapplyinganegativebiasvoltagebetweentheelectrodes,the...

简介：Breakdowncharacteristicsofagapbreakdownloadwasinvestigatedinthispaper,andareverselyswitcheddynistor(RSD)dischargecircuitwasdesignedbasedontheload.Basedonthecharacteristicsoftheload,theRSDdischargecircuitwasimprovedandoptimized.Thevolumeofthemagneticswitchwasreduced.ToprotectthethyristorandRSD,adiodewasantiparallelyconnectedwiththethyristor,whichreducedthetimerequirementwhenapowervoltagewasappliedtoRSD.Experimentalresultsshowthecircuitdesignedinthispapercanswitchahighvoltageandhighcurrentsmoothly,andallowsthepowervoltagetochangeinawiderrange.

简介：Temporalmodedirectnumericalsimulationwasdonefortheprocessoflaminar-turbulenttransitioninanincompressibleboundarylayeronaflatplate.Theanalysisoftheresultsshowedthatduringthebreakdownprocessoflaminar-turbulenttransition,themodificationofthemeanflowprofilebythedisturbancesledtoaremarkablechangeinitsstabilitycharacteristics,manifestedinthesignificantenlargementofthelinearunstablezoneandthemaximumamplificationrate,andledtothatmanymoredisturbanceswereexcitedandenhancedrapidly,correspondinglytheturbulentenergyalsoincreasedrapidly,andthemeanflowprofilesevolvedswiftlyfromlaminartoturbulent.Itwasalsofoundthatiftheobliquewavesintheinitialdisturbancesdidnotformsymmetricalpairs,thesubsequentspan-wisemeanvelocitieswould,ingeneral,benonzeroduetononlinearinteraction,whichwouldhaveagreateffectonthestabilitycharacteristicsandalsoimpliedthattheturbulenceobtainedbydirectnumericalsimulationmightnotbefullyarandomprocess.

简介：在这份报纸，结果在导致激光的故障光谱学(解放)的第一应用上被介绍为在alpha石蜡的Mg集中的量的决心的技术。这种技术在与传统的方法的那些可比较的Mg集中给精确性，这被表明，作为ICP-OES，在短时间并且没有对样品准备的需要。为500ppb的顺序的Mg的察觉的限制被表明。而且，关于合适的刻度曲线和察觉(LOD)的限制的定义的实现的简短讨论被报导。CLC数字TP274

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简介：在这研究，一个超声的喷雾器单位被建立为液体样品察觉改进导致激光的故障光谱学(解放)的定量分析能力，用象一个例子的重金属元素Pb的答案。一个分析过程被设计保证LIBS的稳定性和重覆性发信号。一系列实验根据过程严格地被执行。试验性的参数基于脉搏精力影响和排放特征的时间的进化的研究被优化。血浆温度和电子密度被计算证实血浆的LTE状态。由背景使紧张正常化被表明是在这个工作的一个适当方法。为Pb分析的这个系统的线性范围被与不同集中测量12件样品在04,150ppm的一个集中范围上证实。适合的刻度曲线的关联系数在线性范围象99.94%一样高，并且Pb的LOD作为2.93ppm被证实。集中预言实验被执行在上一进一步六件样品。系统的优秀量的能力被样品的真实、预言的集中的比较表明。最低相对错误是0.043%并且最高是仅仅7.1%。

简介：Anewanalyticalmodelforthesurfaceelectricfielddistributionandbreakdownvoltageofthesilicononinsulator(SOI)trenchlateraldouble-diffusedmetal-oxide-semiconductor(LDMOS)ispresented.Basedonthetwo-dimensionalLaplacesolutionandPoissonsolution,themodelconsiderstheinfluenceofstructureparameterssuchasthedopingconcentrationofthedriftregion,andthedepthandwidthofthetrenchonthesurfaceelectricfield.Further,asimpleanalyticalexpressionofthebreakdownvoltageisobtained,whichoffersaneffectivewaytogainanoptimalhighvoltage.Alltheanalyticalresultsareingoodagreementwiththesimulationresults.

简介：Asanatomicemissionspectroscopytechnique,laser-inducedbreakdownspectroscopy（LIBS）,firstproposedbyBreechandCrossin1962[1],hasattractedmuchaca-demicandindustrialinterestforitsuniqueproperties.Byfocusingapulsedlaserontothesurfaceofatarget,laser-inducedplasmascanbegenerated.Thesimplicityofsamplepreparationofthelaserablationprocessen-ablesLIBStodirectlyanalyzesolid,liquid,orgaseousmaterialsintheatmosphere,makingitaconvenienttoolforchemicalanalyses.TheuniquefeaturesofLIBSsuchasrequiringlittleornosamplepreparation,allowingre-motedetection,andfacilitatingmultipleelementalanal-yseshavecontributedtoitsrapiddevelopmentinrecentyears.

简介：Laser-inducedbreakdownspectroscopy(LIBS)wasexaminedtodetectatracesubstanceadheredontoAlalloysforthesurfaceinspectionofmaterialstobeadhesivelybonded.AsanexampleofSicontamination,siliconeoilwasemployedandsprayedontosubstrateswithacontrolledsurfaceconcentration.LIBSmeasurementsemployingnanosecondUVpulses(λ=266nm)andanoff-axisemissioncollectionsystemwithdifferentdetectingheightswereperformed.Becausesurfacecontaminantsareinvolvedintheplasmaformedbylaserablationofthesubstrates,therelativecontributionofthesurfacecontaminantsandthesubstratestotheplasmaemissioncouldbechangeddependingontheconditionsforplasmaformation.Thelimitofdetection(LOD)wasevaluatedunderseveraldetectingconditionsforinvestigatingthefactorsthataffectedtheLOD.Asignificantfactorwasthestandarddeviationvaluesofsignalintensitiesobtainedforthecleansubstrates.Thisvaluevarieddependingonthemeasurementconditions.FortheAlalloy(A6061),thesmallestLODobtainedwas0.529μg·cm^-2.Furthermore,animprovedLOD(0.299μg·cm^-2)wasobtainedfortheAlalloywithalowerSicontent.