简介：“开火的复合真空”和熄灭的水技术在LiFePO4的合成被介绍阴极粉末。样品被加热在真空石英试管封上的预先分解的先锋混合物准备，走水路在sintering温度熄灭跟随。结果显示使用“快熄灭”的处理能成功控制最后的产品的谷物尺寸的增生并且改进它活跃材料的利用比率。样品由这种技术综合了有高可逆的分泌物特定的能力和好周期的电气化学的性能。

简介：TheLaboratoryforIntenseLasers（L2I）isaresearchcentreinopticsandlasersdedicatedtoexperimentalresearchinhighintensitylaserscienceandtechnologyandlaserplasmainteraction.Currentlythelaboratoryisundergoinganupgradewiththegoalofincreasingtheversatilityofthelasersystemsavailabletotheusers,aswellasincreasingthepulserepetitionrate.Inthispaperwereviewthecurrentstatusofthelaserresearchanddevelopmentprogrammeofthisfacility,namelytheupgradedcapabilityandtherecentprogresstowardstheinstallationofanultrashort,diode-pumpedOPCPAlasersystem.

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简介：我们从氢的现在的泛音系列有不同电离精力Ip的分子的离子。由从氦离子和氢比较再结合矩阵元素分子的离子，我们证实在高顺序的泛音产生的干扰效果从再结合干扰发源。在仅仅当准确连续统wavefunction被使用时，o=Ek+Ip举行的1D表演的再结合矩阵元素上的数字研究，和在泛音系列的极值的职务能精确地被预言。我们证明在泛音系列的极值的职务被围住再结合干扰的潜在的依赖主要影响。[从作者抽象]

简介：Ionization-inducedelectroninjectioninlaserwakefieldaccelerators,whichwasrecentlyproposedtolowerthelaserintensitythresholdforelectrontrappingintothewakewave,hasthedrawbackofgeneratingelectronbeamswithlargeandcontinuousenergyspreads,severelylimitingtheirfutureapplications.Complextargetdesignsbasedonseparatingtheelectrontrappingandaccelerationstageswereproposedastheonlywayforgettingsmallenergy-spreadelectronbeams.Here,basedontheself-truncatedionization-injectionconceptwhichrequirestheuseofunmatchedlaser–plasmaparametersandbyusingtensofTWlaserpulsesfocusedontoagasjetofheliummixedwithlowconcentrationsofnitrogen,wedemonstratesingle-stagelaserwakefieldaccelerationofmulti-hundredMeVelectronbuncheswithenergyspreadsofafewpercent.TheexperimentalresultsareverifiedbyPICsimulations.

简介：Anenergymeasurementsysteminalarge-aperturehighpowerlaserexperimentplatformisintroduced.Theentiremeasurementsystemincludesfivecalorimeters,whichcarryouttheenergymeasurementofthefundamentalfrequencybeforethefrequencyconversionunit,remainingfundamentalfrequency,remainingsecond-harmonics,third-harmonics,aswellastheenergybalancemeasurementafterthefrequencyconversionunit.Combinationalindirectcalibrationanddirectcalibrationareemployedtocalibratethesamplingcoefficientsofthecalorimeters.Theanalysisofthedatashowedthat,regardingtheenergybalancecoefficients,combinationalcalibrationapproachgivesahigherprecision,andleadstoanenergybalancewith1%;andregardingtheenergysamplingcoefficientsforthevariouswavelengthsafterthefrequencyconversion,theresultsfromdirectandcombinationalcalibrationareconsistent.Theuncertaintiesforallenergysamplingcoefficientsarewithin3%,whichguaranteesthereliabilityoftheenergymeasurementforthelaserfacility.

简介：AnoverviewoftheCzechnationalR&DprojectHiLASE(Highaveragepowerpulsedlaser)ispresented.Theprojectfocusesonthedevelopmentofadvancedhighrepetitionrate,diodepumpedsolidstatelaser(DPSSL)systemswithenergiesintherangefrommJto100Jandrepetitionratesintherangefrom10Hzto100kHz.Someapplicationsoftheselasersinresearchandhi-techindustryarealsopresented.

简介：用高速度的逆流层析的围单人赛的碳nanotubes的新色析法的纯化被报导。纯化根据与钠dodecyl硫酸盐驱散围单人赛的碳nanotubes的实验被完成，并且结果混合用由n-butanol/water=1/1(v/v)组成的二个阶段系统被分开。分开的SWNT的尺寸被扫描电子显微镜学观察。结果证明高速度的逆流层析为围单人赛的碳nanotubes的纯化拥有了好efficency。

简介：Withthecontinuousimprovementofthetrainspeed,thedynamicenvironmentoftrainsturnsouttobeaerodynamicdomination.Solvingtheaerodynamicproblemshasbecomeoneofthekeyfactorsofthehigh-speedtrainheaddesign.Giventhattheaerodynamicdragisasignificantfactorthatrestrainstrainspeedandenergyconservation,reducingtheaerodynamicdragisthusanimportantconsiderationofthehigh-speedtrainheaddesign.However,thereductionoftheaerodynamicdragmayincreaseotheraerodynamicforces(moments),possiblydeterioratingtheoperationalsafetyofthetrain.Themulti-objectiveoptimizationdesignmethodofthehigh-speedtrainheadwasproposedinthispaper,andtheaerodynamicdragandloadreductionfactorweresettobeoptimizationobjectives.Theautomaticmulti-objectiveoptimizationdesignofthehigh-speedtrainheadcanbeachievedbyintegratingaseriesofproceduresintothemulti-objectiveoptimizationalgorithm,suchastheestablishmentof3Dparametricmodel,theaerodynamicmeshgeneration,thecalculationoftheflowfieldaroundthetrain,andthevehiclesystemdynamics.Thecorrelationbetweentheoptimizationobjectivesandoptimizationvariableswasanalyzedtoobtainthemostimportantoptimizationvariables,andafurtheranalysisofthenonlinearrelationshipbetweenthekeyoptimizationvariablesandtheoptimizationobjectiveswasobtained.Afteroptimization,theaerodynamicdragofoptimizedtrainwasreducedbyupto4.15%,andtheloadreductionfactorwasreducedbyupto1.72%.

简介：Anenergyapproachisproposedtodescribetheelectromigrationinducedgrainrotationunderhighcurrentdensity.Thedrivingforceisassumedtoarisefromthegrain-boundaryenergyreductionandincreaseoftheinnerenergyfromthejouleheating.Energydissipatesbythegrainboundarydiffusionunderelectromigrationandviscousboundaryslidingisconsidered.Basedontheconservationofenergyproductionanddissipation,anequilibriumequationisdevelopedtopredictthegrainrotationrateanalytically.Itisrecognizedthatthegrainrotateswiththereducingofelectricalresistivityandinverselyproportionaltothegrainlength.Thetheoreticalpredictioniscomparedwiththeexperimentaldata,whichshowsgoodaccuracyontherotationtrendandthespecificrotationrate.

简介：AnovelmethodtocorrectdiffractioneffectinmeasurementofultrasonicvelocityandattenuationathighfrequenciesisdevelopedbyusingthesuperpositiontechniqueofGaussianbeams.Toexaminethevalidityofthisnumericalapproach,theamplitudelossandphaseadvanceduetothediffractioneffectforanSiO2specimenarenumericallycalculatedin30-240MHz,andtheresultsareingoodagreementwiththosebythePapadakismethod.

简介：Toreducethewind-induceddragandimprovethewind-resistanceperformanceofahigh-risebuilding,steadysuctioncontrolisintroducedintothebuildingstructure.Basedonvalidationofthenumericalmethodsbyexperimentwithsuctioncontrolovertheflowseparationofa3Dbackward-facingstep,theReynoldsstressequationmodelisusedtoinvestigatethedragreduction(DR)propertiesofahigh-risebuildingwhosesidefacesarecontrolledbyall-heightsuction.EffectsoftheorificegeometricalparametersandsuctionfluxparametersontheDRandtheseparationcontrolareanalyzed,andthedetailedflowfieldsareshowntoclarifythemechanismofsuctioncontrol.Theresultsindicatethatsuctioncontrolisveryeffectiveinreducingthewindloadsonthehigh-risebuildingmodel,andonlythedimensionlesssuctionfluxdominates.Lastly,thepowerconsumedandthecounterforceinducedbysuctionarediscussed,thesuctionmodelsbecomethe'zero-drag'modelundercertainsuctionangles.

简介：有数组结构的InGaN/GaNmulti-quantum-well-structure激光二极管成功地在蓝宝石底层上被制作。激光二极管由在一个激光薄片上分享普通电极的四根emitter条纹组成。一个800-mm-long洞被劈开底层沿着形成(1100)取向使用激光scriber。激光数组二极管的阀值电流和电压分别地是2A和10.5V。在在房间温度的搏动的当前的注射下面的12W的轻产量山峰力量被完成。我们模仿电的性质在共面的结构和最小化在不同山脉和n电极之间的距离的差别并且增加n类型的电的电导率轧了的结果表演轧了基于的激光二极管是在emitter条纹改进搬运人分发的一致性的二个有效方法。一个薄片上的二emitters被安排在二n电极垫附近位于左边，右边，和四条纹emitters一起装激光。激光二极管在阀值电流上面在408和409nm显示出轻输出的二座锋利的山峰。在为平行、垂直的远域模式的半最大值的完整的宽度分别地是8o和32o。[从作者抽象]

简介：Wepresenta940nmquasi-continuouswavesemiconductorlaserdesignedasabuildingblockforhigh-powerfibercoupledpumpmodules.Thelasercomprisesa400μmnarrow-stripearraymountedonanaluminumnitridesubstrateusinghardsolder.Thechiphasbeenoptimizedforhighopticalpowerandlowlateralfar-fieldangles.Twoverticalandsixlateralstructurevariationshavebeeninvestigatedtodeterminethebestachievableperformance.Operatingat1mspulsewidthandarepetitionrateof10Hz,thelaserdevicereachesamaximumpulsepowerof86Wfroma400μmapertureandmorethan62%maximumconversionefficiency.Lowlateralfar-fieldangles(95%powerenclosed)of11.5and13.5,dependingontheepitaxialdesign,enableefficientmultimodefibercoupling.Thepotentialforhighlyreliableapplicationshasbeendemonstrated.

简介：最近的研究证明了联机录像成像是为监视结晶化过程的一种很有希望的技术。当需要柔韧、快、有能力处理的图象分析由于操作象混合和稳固的集中那样的条件的时间的变化改变了图象质量，在为即时靠近环的控制使用这种技术的瓶颈被考虑。因为晶体趋于重叠或属于对方，在高固体的集中的图象分析结果极其挑战性，在晶体之间的边界通常是模糊的。这篇论文论述能有效地处理在高固体的集中拿的图象的一个图象分割算法。方法片断晶体在水晶块的轮廓上沿着主要相关的凹面点属于对方。详细过程在一个热阶段的反应堆用申请被介绍给l-glutamic酸的结晶化。

简介：Usingtherecentlydevelopedfinite-basis-setmethodwithBsplines,excitedstatesofHatomsinamagneticfieldhavebeencalculated.Energylevelsarepresentedforthetenexcitedstates,2s_0,3d′_0,3p_0,3d_(-1),3d_(-1),4d_(-1),3d_(-2),4d_(-2),4f_(-2),and5f_(-2)asafunctionofmagneticfieldstrengthswitharangefromzeroupto2.35×10~6T.Theobtainedresultsarecomparedwithavailablehighaccuracytheoreticaldatareportedintheliteratureandfoundtobeinexcellentagreement.Thecomparisonalsoshowsthatthecurrentmethodcanproduceenergylevelswithanaccuracyhigherthantheexistinghighaccuracymethod[Phys.Rev.A54(1996)287].Herehighaccuracyenergylevelsareforthefirsttimereportedforthe3d′_0,4d_(-1),4d_(-2),4f_(-2),and5f_(-2)states.

简介：Withthedevelopmentoflasertechnologies,multi-colorlight-fieldsynthesiswithcompleteamplitudeandphasecontrolwouldmakeitpossibletogeneratearbitraryopticalwaveforms.Apracticaloptimizationalgorithmisneededtogeneratesuchawaveforminordertocontrolstrong-fieldprocesses.Wereviewsomerecenttheoreticalworksoftheoptimizationofamplitudesandphasesofmulti-colorlaserstomodifythesingle-atomhigh-orderharmonicgenerationbasedongeneticalgorithm.Bychoosingdifferentfitnesscriteria,wedemonstratethat:(i)harmonicyieldscanbeenhancedby10to100times,(ii)harmoniccutoffenergycanbesubstantiallyextended,(iii)specificharmonicorderscanbeselectivelyenhanced,and(iv)singleattosecondpulsescanbeefficientlygenerated.Thepossibilityofoptimizingmacroscopicconditionsfortheimprovedphasematchingandlowdivergenceofhighharmonicsisalsodiscussed.Thewaveformcontrolandoptimizationareexpectedtobenewdriversforthenextwaveofbreakthroughinthestrong-fieldphysicsinthecomingyears.

简介：TheInternetevolvestoincorporatevery-high-bandwidthopticallinksandmorelarge-delaysatellitelinks.TCPfacesnewchallengesinthisuniqueenvironment.TheoryandexperimentsshowedthatTCPbecomesinefficientandispronetobeunstableastheper-flowproductofbandwidthandlatencyincreases,regardlessofthequeuingscheme.Variable-structurecongestionControlProtocol(VCP)isproposedtoaddresstheseproblems.However,VCPhasproblemintermsofconvergencetime,i.e.,ittakesalongtimeforanewVCPflowtoachievefairbandwidthallocationiftheexistingVCPflowshavelargecon-gestionwindows.ThispaperproposedanExtendedVariable-structurecongestionControlProtocol(EVCP),whichadoptedaconvergencecontroller.Thebasicideaofconvergencecontrolleristhatifaflowhaslargerwindowthanitsfairwindow,itscongestionwindowshouldbedecreasedmoreaggressivelythanusualinMultiplicativeDecrease(MD)phase.SimulationsshowedthatEVCPhasbetterperformanceintermsofconvergencetimewhilekeepingtheadvantagesofVCP.

简介：Thefar-fieldimagingpropertiesofahighindexmicrospherelensspatiallyseparatedfromtheobjectareexperimentallystudied.Ourexperimentalresultsshowthat,foraBlu-raydiskwhosespacingis300nm,thehighindexmicrospherelensalsocandiscernthepatternsoftheobjectsamplewhenthedistancebetweenthelensandtheobjectisupto5.4μm.Whenthedistanceisincreasedfrom0to5.4μm,forthemicrospherelenswithadiameterof24μm,thelateralmagnificationincreasesfrom3.5×to5.5×,whilethefieldofviewdecreasesfrom5.1to3.0μm.Byvaryingthedistancebetweenthelensandtheobject,theopticalimagecanbeoptimized.Wealsoindicatethatthefar-fieldimagingcapabilityofahighindexmicrospherelensisdependentontheelectromagneticfieldintensityprofileofthephotonicnanojetunderdifferentpositionsofthemicrospherelens.

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