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130 个结果
  • 简介:AA6005A-T6铝空挤出是磨擦搅动以2000的高焊接速度焊接了?mm/min和各种各样的轴的力量。结果证明金块地区(NZ)被好equiaxed谷物,平衡阶段的低密度在被观察描绘。在thermo机械地影响的地区(TMAZ)的谷物被伸长,并且脱臼的最高的密度和低密度猛抛能在谷物被发现。热影响地区(HAZ)仅仅经历一个低热周期,和高密度猛抛并且低密度猛抛在变粗的谷物的遗体。在NZ,TMAZ和HAZ的microhardness进化被谷物管理分别地加强的加强的加强的精炼和脱臼,脱臼和降水,和降水和稳固的答案。当增加轴的力量时,加强机制的变化趋势与在每个地区的其它相反,并且microhardness在不同地区增加。作为结果,张力的力量粗略地与提起轴的力量增加,并且所有连接表演高焊接速度禁止变粗,加强的溶解显著地猛抛的好张力的性质。

  • 标签: 焊接速度 机械性质 微观结构 挤出 搅动 磨擦
  • 简介:锌(Zn)缺乏是限制米饭庄稼生长和产量的主要土壤限制,然而,忍耐机制的基因控制仍然糟糕被理解。这里,我们介绍了有希望的loci和候选人基因交谈忍耐给Zn缺乏并且通过协会分析识别了用一365?在多样的aus(半野的类型米饭)的K单个核苷酸多型性(SNP)标记数组面板。容忍的就职与相对稀罕的压力症状展出了更高的生长率。染色体上的二loci7和9强烈在一个山峰压力阶段在Zn缺乏下面与植物活力被联系。从一样的试验性的阴谋基于以前的microarray数据,我们加亮其表达式被重要遗传型或环境效果在Zn下面伴随的四候选人基因缺乏。网络基因本体论支持了已知的忍耐机制,例如维生素酸小径,并且也建议了光合作用基因的重要性克服Zn缺乏症状。

  • 标签: 锌缺乏 水稻 植物学 种植技术
  • 简介:Wehavefacedthechallengeofdevelopingatooldevotedtosimulatethetransportofphotonsandacceleratedparticles(ionizingradiationentities)insidematter,wherethechoiceoftransportingmediumshallbefreefortheuserandnon-homogeneitiesshallbemodeledandmanaged.ThesolutionhasbeenaprojectthatexploitsfullystatisticalMonteCarloapproach,employingadigitalizingboardtoproducerandomsamples.Thesystemhereditiesmanyconceptsfromelectronicsdevicessimulators,butitfindsdifferentapplicationsandwepresentoneofthemforeffectivenessdemonstration.

  • 标签: Monte Carlo automatic SIMULATOR radiation transport
  • 简介:Anovelhighgravitymulti-concentriccylinderelectrodes-rotatingbed(MCCE-RB)wasdevelopedfortheelectrocatalyticdegradationofphenolwastewaterinordertoenhancethemasstransferwiththeself-madeRuO2-IrO2-SnO2/Tianodes.Theinfluencesofelectriccurrentdensity,inletliquidcirculationflowrate,highgravityfactor,sodiumchlorideconcentration,andinitialpHvalueonphenoldegradationefficiencywereinvestigated,withtheoptimaloperatingconditionsdetermined.Theresultsshowedthatundertheoptimaloperatingconditionscoveringacurrentdensityof35mA/cm^2,aninletliquidcirculationflowrateof48L/h,ahighgravityfactorof20,asodiumchlorideconcentrationof8.5g/L,aninitialpHvalueof6.5,areactiontimeof100min,andaninitialphenolconcentrationof500mg/L,theefficiencyforremovalofphenolreached99.7%,whichwasimprovedby10.4%ascomparedtothatachievedinthenormalgravityfield.Thetendencyregardingthechangeinefficiencyforremovalofphenol,totalorganiccarbon(TOC),andchemicaloxygendemand(COD)overtimewasstudied.Theintermediatesanddegradationpathwayofphenolwerededucedbyhighperformanceliquidchromatography(HPLC).

  • 标签: high gravity RuO2-IrO2-SnO2/Ti ANODE ELECTROCATALYTIC oxidation
  • 简介:Thecompositionandproductiontechnologyofthetypeofhot-rolledsteelplateusedintwo-sidedenamelingwerebrieflydescribed.Themicrostructureandmechanicalpropertiesbeforeandafterenamelingwerecontrastivelyinvestigated,andtheprecipitatesinthesampleswereanalyzedusingtransmissionelectronmicroscopeandenergydispersivespectrometer.Theresultsshowtheferritegrainsizeofthesteelplateafterhigh-temperatureenamelfiringtobefine,withalargenumberofTiCandTi4C2S2precipitatesdispersedthroughouttheferritematrix.Aftertworoundsofenamelfiringatatemperaturerangeof800-890℃,itsyieldstrengthcanstillreach342MPa.Theresultsofahydrogenpermeationtestshowthatthehydrogenstoragepropertiesofthesteelplatearemuchbetterthanthoseofordinarystructuralcarbonsteel.Abetterbubblestructureintheenamellayercanbeobtainedbythissteelplate,withnofish-scaledefectsontheenameledsteel-platesurface.

  • 标签: hot rolled two-sided enameling PRECIPITATES steel
  • 简介:日语中关于敬语的研究一直受到国内外学者的广泛关注,而由于语义的特殊性,冒犯性言语的研究却少有人问津。本文对日语冒犯性言语进行界定,从语言单位层次的视角考察日语冒犯性言语的构成形式,并从实现方式及语用功能角度对日本影视作品《LegalHigh》中出现的冒犯性言语进行分析,以探究日语冒犯性言语的使用特点。

  • 标签: 言语冒犯 构成形式 语用功能
  • 简介:Inthispaper,high-speedsurface-illuminatedGe-on-Sipinphotodiodeswithimprovedeffidencyaredemon-strated.Withphoton-trappingmicroholefeatures,theexternalquantumefficiency(EQE)oftheGe-on-Sipindiodeis〉80%at1300nmand73%at1550nmwithanintrinsicGelayerofonly2μmthickness,showingmuchimprovementcomparedtoonewithoutmicroholes.MorethanthreefoldEQEimprovementisalsoob-servedatlongerwavelengthsbeyond1550nm.Theseresultsmakethemicrohole-enabledGe-on-SiphotodiodespromisingtocoverboththeexistingCandLbands,aswellasanewdatatransmissionwindow(1620-1700nm),whichcanbeusedtoenhancethecapacityofconventionalstandardsingle-modefibercables.Thesephotodiodeshavepotentialformanyapplications,suchasinter-/intra-datacenters,passiveopticalnetworks,metroandlong-hauldensewavelengthdivisionmultiplexingsystems,eye-safelidarsystems,andquantumcommunications.TheCMOSandBiCMOSmonolithicintegrationcompatibilityofthisworkisalsoattractiveforGeCMOS,near-infraredsensing,andcommunicationintegration.

  • 标签: 锗硅 光电二极管 通讯技术 理论分析
  • 简介:Anall-fiberizedandnarrow-bandwidthmasteroscillatorpoweramplification(MOPA)systemwithrecordoutputpowerof4kWlevelandslopeefficiencyof78%isdemonstrated.Tandempumpingstrategyistentativelyintroducedintothenarrow-bandwidthMOPAsystemforthermallyinducedmodeinstability(TMI)suppression.ThestimulatedBrillouinscattering(SBS)effectisbalancedbysimplyusingone-stagephasemodulationtechnique.Withdifferentphasemodulationsignals,SBSlimitedoutputpowersof336W,1.2kWand3.94kWarerespectivelyachievedwithspectralbandwidthsaccountingfor90%powerof~0.025,0.17and~0.89nm.Comparedwithourprevious976nmpumpingsystem,TMIthresholdisoverallboostedtobe>5timesinwhichtandempumpingincreasestheTMIthresholdof>3times.Thebeamquality(M~2factor)oftheoutputlaseriswellwithin1.5belowtheTMIthresholdwhileitisultimatelysaturatedtobe1.86withtheinfluenceofTMIatmaximaloutputpower.ExceptforSBSandTMI,stimulatedRamanscattering(SRS)effectwillbeanotherchallengeforfurtherpowerscaling.InsuchahighpowerMOPAsystem,multidetrimentaleffects(SBS,SRSandTMI)willcoexistandmaybemutual-coupled,whichcouldprovideawellplatformforfurthercomprehensivelyinvestigatingandoptimizingthehighpower,narrow-bandwidthfiberamplifiers.

  • 标签: advanced LASER technology and APPLICATIONS design
  • 简介:OnJuly9,the2018UnitedNationsHighLevelPoliticalForumonSustainableDevelopmentwasgrandlyopenedattheUnitedNationsHeadquartersinNewYork.ChinaNGONetworkforInternationalExchanges(CNIE)organizedanumberofsocialorganizationsinChinatoattendtheforum,heldathemeseminar,andparticipatedinthephotoexhibitionoftheforum.

  • 标签: United Nations High Level POLITICAL FORUM