简介：Reductionofmodulatorenergyconsumptionto10fJ∕bitisessentialforthesustainabledevelopmentofcommunicationsystems.Lumpedmodulatorsmightbeaviablesolutionifinstructedbyacompletetheorysystem.Here,wepresentacompleteanalyticalelectro-opticresponsetheory,energyconsumptionanalysis,andeyediagramsonabsolutescalesforlumpedmodulators.Consequentlythespeedlimitationisunderstoodandalleviatedbysingle-driveconfiguration,andcomprehensiveknowledgeintotheenergydependenceonstructuralparameterssignificantlyreducesenergyconsumption.Theresultsshowthatsiliconmodulationenergyaslowas80.8and21.5fJ∕bitcanbeachievedat28Gbdunder50and10Ωimpedancedrivers,respectively.A50Gbdmodulationisalsoshowntobepossible.Theanalyticalmodelscanbeextendedtolumpedmodulatorsonothermaterialplatformsandofferapromisingsolutiontothecurrentchallengesofmodulationenergyreduction.

简介：辅助蚂蚁种类利用不同战术与主导的种的更强壮、更大、更好攻击的个人一起减少竞争。在我们的试验性的学习，我们与单个主导的种的工人一起在他们的同现期间估计了4辅助蚂蚁种类的单个工人的行为的反应。与古典实验在好攻击的相互作用上集中了的大多数相反，我们在同现的结果作为一个关键因素估计了工人速度。通常，处于慢有的学习specieseach和快个人的速度有一个大intraspecific变化。所有学习种类的工人就在相互作用以后更快移动了，建议在2个敌对工人之间的接触是紧张的刺激，产生增加速度的行为的反应。另外，一个给定的个人断然经验丰富的好攻击的接触的数字影响了它的速度。而且，当探索领土时，快的工人在种间的相互作用以后也是快的。侵略的持续时间被速度和辅助种类workerthe的身体尺寸显著地更快速减少一个工人反应了并且更大它是，更突然是累积侵略的时间。到我们的知识，这是在蚂蚁上要进行的这种类型的第一研究，我们断定那速度是一俯看并且种类并且也的重要特征个人，因此，它应该在蚂蚁集合被看作同现的模式的一位司机。

简介：ASchwarzschildmicroscopewithanumericalapertureof0.2andamagnificationof130ina100μmfieldofview(FOV)isdesignedandisworkingat13.5nm.Meanwhile,aCCDisusedasadetectorwithapixelsizeof13μm×13μmandimagingareaof13mm×13mm.Theimagingqualitywithtolerancesofsystemanderrorsofmirrorsareconsidered.Weobtainthatthebeston-axesobjectresolutioncanbeuptoabout200nm,theaveragevalueis230nm,andtheresolutionisabout360nmat80μmFOV.

简介：

简介：Theseismicperformanceoffourshortconcretecolumnswasinvestigatedunderlowcycleandrepeatedloads,includingthefailurecharacteristics,hystereticbehavior,rigiditydegeneracyandsteel-barstress.Theinfluencesofreinforcementstrength,stirrupratioandshearspanratiowerealsocompared.Testresultsrevealthattherestrictioneffectofstirrupscanimprovethepeakstress,sothebearingcapacityofspecimencanbeimproved;forthehigh-strengthshortconcretecolumnwithhigh-strengthstirrups,itwasmorereasonabletouseultimatedisplacementangletoreflecttheductilityofthespecimen,andtheyieldstrengthofhigh-strengthstirrupsshouldbedevaluedwhencalculatingthestirrupcharacteristicvalue;theseismicperformanceofshortcolumnwouldbeimprovedwiththeincreaseofvolume–stirrupratioandshearspanratio;thehigh-strengthstirrupsandhigh-strengthlongitudinalreinforcementsdidnotyieldwhentheloadactingonthespecimenreachedthepeakvalue,whichbroughtadequatesafetystocktotheseshortcolumns.

简介：用X光检查的应用程序，有在造的提高的温度，显微镜的损坏进化进程观察和图象的聚丙烯纤维的C80高张力水泥的计算断层摄影术(CT)技术能被获得，基于统计理论和具体内部缺点扩展和显微镜的结构的进化整齐的联合的数字分析。expermental结果证明缺点率在不同温度变化了并且能决定具体降级阀值温度。另外，数据分析能帮助建立在缺点率和温度损坏的效果之间的进化方程，并且鉴别在在高温度的高力量水泥的聚丙烯纤维的增加能改进裂开的抵抗。

简介：ThechemicalcompositionandmicrostructureofTibetanmicrocrystallinemagnesitewerestudiedbymeansofXRF,XRDandFESEM.Itisfoundthatthemicrocrystallinemagnesitehasuniformlydistributedgrains,mostlyintherangeof2-4μm,andtheMgOcontentis47.80%.Infusedmagnesia,thedrusesarecolorlesstransparentpericlasemegacrystswithoutimpurity,whilethecrustsandiswhite,withahighMgOcontentupto97%-99%.Thepericlasecrystalsarebig,appearingasfacedandstep-growthmorphology.Massivesecondarylongcolumnarpericlaseiscrystallized.

简介：

简介：

简介：OralEnglishplaysavitalpartinEnglishteaching,whichisoneofthefourskillsincludinglistening,speaking,readingandwriting.However,studentsonlypayattentiontoreadingandwritingbutneglectlisteningandspeakingforalongtimeduetotheexaminationorientededucation,inconsequence,thelivelyandvividlanguageclassesshiftintoboringgrammarclass,whichbringsabouttheloworalEnglishlevelofstudents.Withtheaccelerationofthenewcurriculumreform,higherrequirementsforEnglishteachinghavebeenputforward,andmoreattentionhasbeenpaidtothecultivationofstudents’oralcomprehensiveability.ThispaperaimsatpointingoutsomeproblemsoforalEnglishteachingofseniorhighschoolandcomeupwithavarietyoftentativesuggestionstorefineandenhancestudents’oralcomprehensivecapacity.

简介：铁路青蛙钢的微结构进化在不同压力下面团结了用OM，FEGSEM，和TEM被学习。钢的碳化物的团结，谷物尺寸，和形态学上的压力的影响被分析。有在高压力下面的压力和团结的微观结构的钢增加的融化的点不与融化的温度显著地变化，这被发现。试验性的结果分别地证明由完全的equiaxed树突组成的团结的微观结构显著地通过压力的增加被精制，与在3，6，和10GPa下面的大约24，18，和8m的吝啬的树突手臂间距。它被precipitates从像针、菱形的碳化物改变的TEM观察也揭示(M3C)在正常期间形成(大气)压力团结进nodulized六角形猛抛M7在3GPa的C3，和M23在6GPa和10GPa的C6，它与踪迹元素的undercooling和分发被联系。precipitates的直径在80nm和200nm之间。

简介：

简介：Anumberoflaserfacilitiescomingonlineallovertheworldpromisethecapabilityofhigh-powerlaserexperimentswithshotrepetitionratesbetween1and10Hz.Targetavailabilityandtechnicalissuesrelatedtotheinteractionenvironmentcouldbecomeabottleneckfortheexploitationofsuchfacilities.Inthispaper,wereportontargetneedsforthreedifferentclassesofexperiments:dynamiccompressionphysics,electrontransportandisochoricheating,andlaser-drivenparticleandradiationsources.Wealsoreviewsomeofthemostchallengingissuesintargetfabricationandhighrepetitionrateoperation.Finally,wediscusscurrenttargetsupplystrategiesandfutureperspectivestoestablishasustainabletargetprovisioninfrastructureforadvancedlaserfacilities.

简介：

简介：

简介：Thispapernumericallystudiestheinfluenceofthedownwardspoilerdeflectionontheboundarylayerflowofahigh-lifttwo-elementairfoilconsistingofadroopnose,amainwing,adownwarddeflectingspoilerandasingleslottedflap.Bothoftheboundarylayeroftheuppersurfaceofthespoilerandtheconfluentboundarylayeroftheuppersurfaceoftheflapbecomethicker,asthedownwardspoilerdeflectionincreases.Comparedtotheattachedflowattheangleofattackof10°,theflowoftheuppersurfaceofthespoilerbecomesseparatedattheangleofattackof16°whenthespoilerdeflectionislargeenough,whichcorrespondstotheboundarylayerflowreversalinvelocityprofiles.

简介：Inrecentyears,developmentofhigh-performancesupercapacitorelectrodematerialshasstimulatedagreatdealofscientificresearch.Theelectrochemicalperformanceofasupercapacitorstronglydependsonitsmaterialstructures.Herein,wereportasimplestrategyforhigh-performancesupercapacitorsbybuildingpseudocapacitiveCuSnanosphereswithnanoporousstructures,nanosizedwalls(<10nm)andrelativelylargespecificsurfaceareaof65m~2/g.Thiselectrodedemonstratesexcellentelectrochemicalperformanceincludingamaximumspecificcapacitanceof814F/gat1A/g,significantratecapabilityof42%capacitanceretentionatanultrafastrateof50A/g,andoutstandinglong-termcyclingstabilityatvariouscurrentdensities.Theremarkableelectrochemicalperformanceofas-preparednanoporousCuSnanosphereselectrodehasbeenattributedtoitsuniquestructuresthatplaysakeyroleinprovidingshortionandelectrondiffusionpathways,facilitatediontransportandmoreactivesitesforelectrochemicalreactions.Thisworkshedsanewlightonthemetalsulfidesdesignphilosophy,anddemonstratesthatnanoporousCuSnanosphereselectrodeisapromisingcandidateforapplicationinhigh-performancesupercapacitors.

简介：

简介：Representingtheappealsofitsindustry,thehigh-techinterestgrouphasrecentlybecomeanemergingpoliticalforceintheUnitedStates.Withabundantfinancialresourcesandproficiencyinpoliticalcommunication,thegrouprapidlygrowstobeasignificantforceintheAmericanpoliticalsphere.IthasstartedtoaffecttheinternalandforeignaffairsoftheU.S.andplayedaproactiveroleinthelatestpresidentialelection.Sincethehigh-techinterestgrouphasalreadybecomeandwillcontinuetobeabigplayerinSino-U.S.relations,Chinashouldcarefullydealwithitsappealsandconflictofinterests,andtrytodevelopthisgroupintoastabilizerbetweenthetwocountries.

简介：Preparationofhierarchicallyporous,heteroatom-richnanostructuredcarbonsthroughgreenandscalableroutesplaysakeyroleforpracticalenergystorageapplications.Inthiswork,naturallyabundantlignocellulosicagriculturalwastewithhighinitialoxygencontent,hazelnutshells,werehydrothermallycarbonizedandconvertedintonanostructured‘hydrochar’.Environmentallybenignceramic/magnesiumoxide（MgO）templatingwasusedtointroduceporosityintothehydrochar.Electrochemicalperformanceoftheresultingmaterial（HM700）wasinvestigatedinaqueoussolutionsof1MH2SO4,6MKOHand1MNa2SO4,usingathree-electrodecell.HM700achievedahighspecificcapacitanceof323.2F/gin1MH2SO4（at1A/g,-0.3to0.9Vvs.Ag/AgCl）duetothecontributionsofoxygenheteroatoms（13.5wt%）tothetotalcapacitancebypseudo-capacitiveeffect.Moreover,amaximumenergydensityof11.1Wh/kgandamaximumpowerdensityof3686.2W/kgwereattainedforthesymmetricsupercapacitoremployingHM700aselectrodematerial（1MNa2SO4,E=2V）,makingthedevicepromisingforgreensupercapacitorapplications.