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简介：Thepulseamplificationinthedispersion-decreasingfiber(DDF)isinvestigatedviasymboliccomputationtosolvethevariable-coefficienthigher-ordernonlinearSchr(o|¨)dingerequationwiththeeffectsofthird-orderdispersion,self-steepening,andstimulatedRamanscattering.Theanalyticone-solitonsolutionofthismodelisobtainedwithasetofparametricconditions.Basedonthissolution,thefundamentalsolitonisshowntobeamplifiedintheDDF.ThecomparisonoftheamplitudeofpulsesfordifferentdispersionprofilesoftheDDFisalsoperformedthroughthegraphicalanalysis.Theresultsofthispaperwouldbeofcertainvaluetothestudyofsignalamplificationandpulsecompression.

简介：Inthispaper,astructuralanalysisisperformedtogaininsightsonthesynergisticmechanicalamplificationeffectthatCampaniformsensillahavewhencombinedinanarrayconfiguration.Inordertosimplifytheanalysisperformedinthispreliminaryinvestigation,anarrayoffourholesinasingleorthotropiclaminaisconsidered.Firstly,aFiniteElementMethod(FEM)analysisisperformedtodiscretelyassesstheinfluencethatdifferentgeometricalparametershaveonthemechanicalamplificationpropertiesofthearray.Secondly,anartificialneuralnetworkisusedtoobtainanapproximatedmulti-dimensionalcontinuousfunction,whichmodelstherelationshipbetweenthegeometricalparametersandtheamplificationpropertiesofthearray.Thirdly,anoptimizationisperformedtoidentifythegeometricalparametersyieldingthemaximummechanicalamplification.Finally,resultsarevalidatedwithanadditionalFEMsimulationperformedbyvaryinggeometricalparametersintheneighborhoodoftheidentifiedoptimalparameters.ThemethodproposedinthispapercanbefullyautomatedandusedtosolveawiderangeofoptimizationproblemsaimedatidentifyingoptimalconfigurationsofstrainsensorsinspiredbyCampaniformsensilla.

简介：半活跃的水坝pers被使用在对还原剂基础隔离土木工程学结构的地震反应。在现在的学习，用可变扩大的一个新半活跃的抑制系统将被调查为适应基础隔离。它使用在系列连接与的一台新奇可变扩大设备(VAD)一被动更潮湿。VAD能够生产多重扩大因素，各相应于一个不同扩大状态。力量从更潮湿根据当前的扩大状态被放大到结构，它经由明确地定制到系统的一个半活跃的控制算法被选择“s唯一的抑制特征。为adaptivebase隔离表明VAD潮湿系统的有效性，数字模拟为三被进行，易于远、近地的地面的七故事的base-isolatedbuildings打手势。结果显示系统能与孤立底的大楼相比在反应完成重要减小没有更潮湿。建议系统也被发现表现很好与相比一典型半活跃更潮湿。

简介：Wetheoreticallyproposethestructureofall-solidphotonicbandgapfibertosupportLP01modeat980nmandfourmodesofLP01,LP11,LP02andLP21atCbands.Weresearchcharacteristicsofthephotonicbandgabandapplypho-tonicfiberasgainmediumtofiberlasers,finallyrealizingseparateamplificationofLP11andLP21high-ordermodeswithsingle-modestablepumplightofLP01modeat980nm.Besides,werealizeLPllmodeandLP21modelaserout-putofdual-wavelength.

简介：CMV特定的免疫为人的cytomegalovirus(HCMV)的控制是必要的感染。干细胞移植在hemopoietic系统的疾病的一个范围的管理广泛地被使用。病人们在早posttransplant时期深刻地是immunosuppressed，并且cytomegalovirus(CMV)的复活仍然是病态和死亡的一个重要原因。CMV特定的CD8+T房间克隆的采纳转移被显示了减少病毒的复活的率；然而，为采纳转移的房间的前vivo生产是集中、昂贵的劳动。我们这里用CMV特定的epitope肽报导一个修改肽刺激方法为CMV特定的CTL的产生刺激PBMC。这个方法允许CMV特定的CTL的有效扩大并且从一件单个血样品为FACS分析提供很多房间。显著地，它完成允许容易要比较并且顺序评估了的不同个人的数据的CD8+T房间染色的tetramer的高频率。因此，这条途径为潜在的采纳免疫疗法扩展并且选择高特性的限制HLA的CMV-pp65-reactiveT房间线。

简介：Westudytheparametricamplificationofelectromagneticallyinducedtransparency-assistedRydbergsix-andeight-wavemixingsignalsthroughacascadednonlinearopticalprocessinahotrubidiumatomicensembleboththeoreticallyandexperimentally.Theshiftoftheresonantfrequency（inducedbytheRydberg-Rydberginter-action）ofparametricallyamplifiedsix-wavemixingsignalisobserved.Moreover,theinterplaysbetweenthedressingeffectsandRydberg-Rydberginteractionsinparametricallyamplifiedmultiwavemixingsignalsarein-vestigated.ThelinearamplificationofRydbergmultiwavemixingprocesseswithmultichannelnatureactsagainstthesuppressioncausedbyRydberg-Rydberginteractionanddressingeffect.

简介：Cerenkovwakeamplificationcanbeusedasanacceleratingscheme,inwhichatriggerbunchofelectronspropagatinginsideacylindricalwaveguidefilledwithanactivemediumgeneratesaninitialwakefield.Duetothemultiplereflectionsinsidethewaveguide,thewakemaybeamplifiedsignificantlymorestronglythanwhenpropagatinginaboundlessmedium.Sufficientlyfarawayfromthetriggerbunchthewake,whichtravelswiththesamephasevelocityasthebunch,reachessaturationanditcanaccelerateasecondbunchofelectronstrailingbehind.ForaCO2gasmixtureournumericalandanalyticalcalculationsindicatethatashortsaturationlengthandahighgradientcanbeachievedwithalargewaveguideradiusfilledwithahighdensityofexcitedatomsandatriggerbunchthattravelsatavelocityslightlyabovetheCerenkovvelocity.Toobtainastablelevelofsaturatedwakethatwillbesuitableforparticleacceleration,itiscrucialtosatisfythesingle-moderesonancecondition,whichrequireshighaccuracyinthewaveguideradiusandtheratiobetweentheelectronphasevelocityandtheCerenkovvelocity.Forsingle-modepropagationourmodelindicatesthatitisfeasibletoobtaingradientsashighasGVm-1inawaveguidelengthofcm.

简介：在这份报纸，扩大因素ks偷看有在在山东省上的班和地点上的不同exceedance概率的地面运动被分析从班地点的358地上凿穿和班的140地上凿穿收集的土壤层的地震反应数据估计地点。从结果，一个人能结束那1ks的scatter阴谋通常服从正常分布；有输入地面的力量的增加的2ks减少打手势，它比在班lI地点在班地点是更明显的；3随磨擦运动输入的基岩接口的深度的增加，为类地点，ks逐渐地增加直到到稳定的值深度什么时候到达直到约20米或更大。然而为班地点，ks对深度感觉迟钝；4为班地点的ks的一般水准是1.47，比在中国GB18306-2001的地震地面运动参数带状配列地图使用了那稍微大。另外，在在在山东省上的山峰地面加速的不同层次的班和地点上的kspreliminarily在纸被讨论。

简介：Anumericaldesignonthetriangularphotoniccrystalfiber(PCF)basedbackwardmulti-pumpRamanamplifierispresented.ItisdemonstratedthathighflatRamangaincanbereachedbasedonPCF.InfluencesofdifferentgeometricparametersandgermaniumdopingconcentrationsontheRamannetgain,amplifiedspontaneousemission(ASE)noiseanddoubleRayleighbackscattering(DRBS)ofthesignalhavebeenanalyzed.ForoptimizingcrystalfiberRamanamplifier(FRA),thereistradeoffbetweenthegeometricparameterandgermaniumdopingconcentrationoftriangularPCF.TheresultsshowthatPCFisanappropriatecandidateforhighgainRamanamplifiers.

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简介：PastresearchershaveanticipatedtheoccurrenceofagreatearthquakeinthecentralHimalayasinthenearfuture.ThismaycauseseriousdamageintheKathmanduValley,whichsitsonanancientlakebedzone,withlacustrinesedimentsofmorethan500mdepth.Inthisstudy,thepredominantfrequencyofgroundmotionisevaluatedusingtheHorizontal-to-Vertical(H/V)spectralratiotechniqueandrecordingsofambientnoise.TheresultsoftheH/Vratioshowtwopeaksinabout20percentofthelocations,whicharedistributedmainlyinandaroundthecenterandnorthernpartoftheKathmanduValley.Thepredominantfrequenciesvaryfrom0.5Hzto8.9Hzinthestudyarea,whereasthesecondresonancefrequencyvariesfrom4Hzto6Hzinthecenterandnorthernpartofthevalley.Thisindicatesthatthecenterandnorthernpartofthevalleyhaveawiderangeofresonancefrequencyduetotwolevelsofimpedancecontrastonemaybefromthesurfacelayerandtheothermaybefromthelayerunderneath.ThesetwolevelsofresonanceindicatetheimportanceofconsideringtheeffectsofsurfaceandlowerlayersduringtheplanninganddesigningofinfrastructuresintheKathmanduValley.

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简介：Weinvestigatetheeffectsofspontaneouslygeneratedcoherence(SGC)onboththesteadyandtransientgainpropertiesinafour-levelinverted-Y-typeatomicsysteminthepresenceofaweakprobe,twostrongcoherentfields,andanincoherentpump.Forthesteadyprocess,wefindthattheinversionlessgainmainlyoriginsfromSGC.Inparticular,wecanmodulatetheinversionlessgainbychangingtherelativephasebetweenthetwofields.Moreover,theamplitudeofthegainpeakcanbeenhancedandtheadditionalgainpeakcanappearbychangingthedetuningofthecouplingfield.Asforthetransientprocess,thetransientgainpropertiescanalsobedramaticallyaffectedbytheSGC.ComparedtothecasewithoutSGC,thetransientgaincanbegreatlyenhancedwithcompletelyeliminatedtransientabsorptionbychoosingtheproperrelativephasebetweenthetwofields.Andtheinverted-Y-typesystemwithSGCcanbesimulatedinbothatomicandsemiconductorquantumwellsystemsavoidingtheconditionsofSGC.

简介：Wedemonstrateahigh-contrast,joule-levelNd:glasslasersystemoperatingat0.5Hzrepetitionratebasedonadoublechirpedpulseamplification（CPA）scheme.Byinjectinghigh-contrast,high-energyseedpulsesintotheNd:glassCPAstage,thepulseenergyisamplifiedto1.9JthroughtwoopticalparametricCPAstagesandtwoNd:glassamplifiers.Thetemporalcontrastofcompressedpulseismeasureddowntothelevelof10-8attensofps,and10-10near200psbeforethemainpulse,respectively.

简介：Anovelapproachtogenerate60GHzopticalcarriersuppression(OCS)millimeter-wave(mm-wave)signalbasedonthesaturatedopticalparametricamplification(OPA)effectinhighnon-linearfiber(HNLF)isinvestigated.Intheproposedsystem,theOPAeffectoccurswhenthesignalandpumpwith30GHzfrequencyintervalaresetintothehighnon-linearfiber.BycontrollingthelengthofHNLF,OPAeffectsaturates,andthepumppowerisdeliveredinalargeextenttothesignalandidlerlight,soa60GHzOCSmm-waveisgenerated.Thesystemdoesnotneedhigh-speedexternalmodulator,high-frequencyvibrationsourceornarrow-bandfilter,whichgreatlyreducesthecostandimprovesthestabilityoftheradiooverfiber(ROF)system.Resultsshowthatthe10Gb/sdownstreamsignalcanbetransmittedwithnegligiblepowerpenalty.

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