简介：新奇大熔化thiophene的多不的aromatics1基于分核5被综合了，并且它的结构被1HNMR，13CNMR，MS，UVvis和元素的分析证实。合成的关键步骤包含了Stille跨coupling反应并且列在后面由选择-悬挂的thienyl的氧化环合在温和条件下面由FeCl3响。

简介：新奇的碳基于强壮的稳固的酸催化剂成功地被综合了。为acetalization和ketalization的催化活动被调查。结果证明新奇催化剂与超过92%的平均收益是很有效的。新奇异构的催化剂也有高活动，甚至到7membered戒指缩荃和ketals的准备的宽适用性，惊人地简单的workup过程，非污染和可重用性的优点，它将极大地贡献绿过程。

简介：山崩危险性地图是描绘未来斜坡失败危险性的空间分发的学习地之一。这篇论文为生产山崩危险性地图处理过去的方法；把这些方法划分成3种类型。逻辑线性回归途径进一步被详细描述在上由交叉表方法，它被用来分析在范畴或二进制的反应变量之间的关系；至少一个连续或范畴或二进制的解释变量源于样品。它是当专家意见在启发式的途径有大差别时，在考虑下面用作各种各样的因素的重量的系数的一项客观任务。与确定的途径不同，它对地区性的规模很适用。在这研究，两倍逻辑回归在学习区域被使用。全部学习区域首先被分析。逻辑回归方程显示出那举起，最近到道路，河；居住区域是在这个区域触发山崩出现的主要因素。第一张山崩危险性地图的预言精确性被显示是80%。沿着道路；居住区域，几乎所有区域在高山崩危险性地区。一些非山崩区域不正确地被划分成高度；中等山崩危险性地区。以便改进地位，第二逻辑回归用山崩房间在高山崩危险性地区被做；在这个区域的非山崩样品房间。在第二逻辑回归分析，仅仅设计；地质的条件在这些区域是重要的；在显示那的新逻辑回归方程被进入仅仅有不稳定的工程的区域；地质的条件在大规模工程活动期间对山崩敏感。考虑这二逻辑回归结果产出一张新山崩危险性地图。两倍逻辑回归分析改进了非山崩预言精确性。在为逻辑回归的参数的计算期间，山崩密度被用来转变名字的变量到数字变量；这避免哑巴变量的一个过分地高的数字的创造。

简介：ThisworkdemonstratestheNd:YAGwaveguidelaserasanefficientplatformforthebio-sensingofdextrosesolutionsandtumorcells.ThewaveguidewasfabricatedinanNd:YAGcrystalwiththecooperationofultrafastlaserwritingandionirradiation.ThelaseroscillationintheNd:YAGwaveguideisultrasensitivetotheexternalenvironmentofthewaveguide.Evenaweakdisturbanceleadstoalargevariationoftheoutputpowerofthelaser.Accordingtothisfeature,anNd:YAGwaveguidecoatedwithgrapheneandWSe2layersisusedassubstrateforthemicrofluidicchannel.WhenthemicroflowcrossestheNd:YAGwaveguide,thelaseroscillationinthewaveguideisdisturbedandinducesfluctuationoftheoutputlaser.Accordingtothefluctuation,themicroflowisdetectedwithasensitivityof10mW/RIU.

简介：Wall-boundedturbulentflowinvolvesthedevelopmentofmulti-scaleturbulenteddies,aswellasasharplyvaryingboundarylayer.Itstheoreticaldescriptionsareyetphenomenological.Wepresenthereanewframeworkcalledstructuralensembledynamics(SED),whichaimsatusingsystematicallyallrelevantstatisticalpropertiesofturbulentstructuresforaquantitativedescriptionofensemblemeans.AnewsetofclosureequationsbasedontheSEDapproachforaturbulentchannelflowispresented.SEDorderfunctionsaredefined,andnumericallydeterminedfromdataofdirectnumericalsimulations(DNS).ComputationalresultsshowthatthenewclosuremodelreproducesaccuratelythesolutionoftheoriginalNavier-Stokessimulation,includingthemeanvelocityprofile,thekineticenergyofthestream-wisevelocitycomponent,andeverytermintheenergybudgetequation.ItissuggestedthattheSED-basedstudiesofturbulentstructurebuildsabridgebetweenthestudiesofphysicalmechanismsofturbulenceandthedevelopmentofaccuratemodelequationsforengineeringpredictions.

简介：Weexperimentallydemonstratetheopticalpropertiesofgratingsengravedinasingle-modewaveguidefabricatedontopofadielectricmultilayerplatform.ThestructurecanbeapproachedasareflectorforBloch-surface-wavebasedtwo-dimensionalopticalsystems.Thegratingshavebeenfabricatedonathin(～λ∕25)titaniumdioxidelayerwithathicknessofafewtensofnanometersdepositedonthetopofamultilayerplatform.Theopticalpropertiesofthegratingshavebeencharacterizedinthenearfieldwiththeaidofmulti-heterodynescanningnearfieldopticalmicroscopy.Weinvestigatethesurfacewave’sinterferencepattern,producedbyincidentandreflectedlightinfrontofthegratings.ThepresentedgratingsbehaveasanefficientBloch-surface–wave-basedreflectorattelecommunicationwavelength.

简介：Thealternatingdirectionmethodofmultipliers(ADMMforshort)isefficientforlinearlyconstrainedconvexoptimizationproblem.ThepracticalcomputationalcostofADMMdependsonthesub-problemsolvers.Theproximalpointalgorithmisacommonsub-problem-solver.However,theproximalparameterissensitiveintheproximalADMM.Inthispaper,weproposeahomotopy-basedproximallinearizedADMM,inwhichahomotopymethodisusedtosolvethesub-problemsateachiteration.Undersomesuitableconditions,theglobalconvergenceandtheconvergencerateofO(1/k)intheworstcaseoftheproposedmethodareproven.Somepreliminarynumericalresultsindicatethevalidityoftheproposedmethod.

简介：Therelationshipbetweentheadsorptionpropertiesfortheactivecomponentsofginkgoleavesandthestructureoftheadsorbentsbasedonurea-formaldehydecondensedpolymerswasinvestigated.Theresultsrevealedthattheseadsorbentsshowedveryhighadsorptonselectivityforbothflavonolglycosidesandterpenelactonescontainedinginkgoleaves.Thus,anadsorptionseparationprocedureforpurificationofginkgoleavesextractswasdeveloped.

简介：Basedonsineandcosinefunctions,thecompactlysupportedorthogonalwaveletfiltercoefficientswitharbitrarylengthareconstructedforthefirsttime.When/N=2k-1andN=2k,theunifiedanalyticconstructionsoforthogonalwaveletfiltersareputforward,respectively.ThefamousDaubechiesfilterandsomeotherwell-knownwaveletfiltersaretestedbytheproposednovelmethodwhichisveryusefulforwavelettheoryresearchandmanyapplicationareassuchaspatternrecognition.

简介：

简介：

简介：

简介：Inthisletter,apiezoaeroelasticenergyharvesterbasedonanairfoilwithdoubleplungedegreesoffreedomisproposedtoadditionallytakeadvantageofthevibrationalenergyoftheairfoilpitchmotion.Ananalyticalmodeloftheproposedenergyharvestingsystemisbuiltandcomparedwithanequivalentmodelusingthewell-exploredpitch-plungeconfiguration.Thedynamicresponseandaveragepoweroutputoftheharvesterarenumericallystudiedastheflowvelocityexceedsthecut-inspeed(flutterspeed).Itisfoundthattheharvesterwithdouble-plungeconfigurationgenerates4%–10%morepowerwithvaryingflowvelocitieswhilereducing6%ofthecut-inspeedthanitscounterpart.

简介：Itisimportanttounderstandtheimpactofwing-morphingonaerodynamicperformanceinthestudyofflapping-wingflightofbirdsandinsects.Weuseaflappingplatehingedwithatrailing-edgeflapasasimplifiedmodelforflexible/morphingwingsinhovering.Thetrailing-edgeflappingmotionisoptimizedbyanadjoint-basedapproach.Theoptimizedconfigurationsuggeststhatthetrailing-edgeflapcansubstantiallyenhancetheoveralllift.Furtheranalysisindicatesthattheliftenhancementbythetrailingedgeflappingisfromthechangeofcirculationintwoways:thelocalcirculationchangebytherotationalmotionoftheflap,andthemodificationofvortexsheddingprocessbytherelativelocationbetweenthetrailing-edgeflapandleading-edgemainplate.

简介：

简介：

简介：Stochasticdynamicanalysisofthenonlinearsystemisanopenresearchquestionwhichhasdrawnmanyscholars'attentionforitsimportanceandchallenge.Fokker–Planck–Kolmogorov(FPK)equationisofgreatsignificancebecauseofitstheoreticalstrictnessandcomputationalaccuracy.However,practicaldifficultieswiththeFPKmethodappearwhentheanalysisofmulti-degree-offreedom(MDOF)withmoregeneralnonlinearityisrequired.Inthepresentpaper,byinvokingtheideaofequivalenceofprobabilityflux,thegeneralhigh-dimensionalFPKequationrelatedtoMDOFsystemisreducedtoone-dimensionalFPKequation.Thenacellrenormalizedmethod(CRM)whichisbasedonthenumericalreconstructionofthederivedmomentsofFPKequationisintroducedbycoarseningthecontinuousstatespaceintoadiscretizedregionofcells.ThenthecellrenormalizedFPK(CR-FPK)equationissolvedbydifferencemethod.Threenumericalexamplesareillustratedandtheeffectivenessofproposedmethodisassessedandverified.

简介：Ametallicnanostructuredarraythatscattersradiationtowardathinmetalliclayergeneratessurfaceplasmonresonancesfornormallyincidentlight.Thelocationoftheminimumofthespectralreflectivityservestodetectchangesintheindexofrefractionofthemediumunderanalysis.Thenormalincidenceoperationeasesitsintegrationwithopticalfibers.Thegeometryofthearrangementandthematerialselectionarechangedtooptimizesomeperformanceparametersassensitivity,figureofmerit,fieldenhancement,andspectralwidth.Thisoptimizationtakesintoaccountthefeasibilityofthefabrication.Theevaluatedresultsofsensitivity（1020nm/RIU）andfigureofmerit(614RIU-1)arecompetitivewiththosepreviouslyreported.

简介：Theaimofthepaperistodiscoverthegeneralcreepmechanismsfortheshortfiberreinforcementmatrixcomposites(MMCs)underuniaxialstressstatesandtobuildarelationshipbetweenthemacroscopicsteadycreepbehaviorandthematerialmicrogeometricparameters.Theunitcellmodelswereusedtocalculatethemacroscopiccreepbehaviorwithdifferentmicrogeometricparametersoffibersondifferentloadingdirections.Theinfluenceofthegeometricparametersofthefibersandloadingdirectionsonthemacroscopiccreepbehaviorhadbeenobtained,anddescribedquantitatively.Thematrix/fiberinterfacehadbeenconsideredbyathirdlayer,matrix/fiberinterlayer,intheunitcellswithdifferentcreeppropertiesandthickness.Basedonthenumericalresultsoftheunitcellmodels,astatisticmodelhadbeenpresentedfortheplanerandomly-distributed-fiberMMCs.Thefiberbreakagehadbeentakenintoaccountinthestatisticmodelforitstartsexperimentallyearlyinthecreeplife.Withthedistributionofthegeometricparametersofthefibers,theresultsofthestatisticmodelagreewellwiththeexperiments.Withthestatisticmodel,theinfluenceofthegeometricparametersandthebreakageofthefibersaswellasthepropertiesandthicknessoftheinterlayeronthemacroscopicsteadycreepratehavebeendiscussed.

简介：