学科分类
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191 个结果
  • 简介:一种爆炸强风缓解选择由使用接球手系统增加了结构的安全。这些系统从弹道的碎片或碎片抓住或排斥窗口或填入墙保护生活和性质的失败。他们能被设计在新建设独立并且结构翻新或过去常扩充结构的变硬的技术。电报,织物,和薄计量器表钢是在过去使用的接球手系统的例子。接球手系统的一个新、演变的范畴基于能被用于墙和窗口升级的聚合材料。这些产品和设计原则为甚至更大的在里面使用性能创造设计系统的Sherwin威廉(SW)使用KCPT强风工程能力和SW材料是一个证明强风缓解概念和K&C保护的技术Pte有限公司(KCPT)。

  • 标签: 爆破 稳定装置 保护膜系统 爆炸缓解
  • 简介:Infraredphotodetectorshavebeenusedextensivelyinbiomedicine,surveillance,communicationandastronomy.However,stateofthearttechnologybasedonIII-VandII-VIcompoundsstilllacksexcellentperformanceforhigh-temperatureoperation.Surfaceplasmonpolaritons(SPPs)havedemonstratedtheircapabilityinimprovingthelightdetectionfromvisibletoinfraredwaverangeduetotheirlightconfinementinsubwavelengthscale.Advancedfabricationtechniquessuchaselectron-beamlithography(EBL)andfocusedion-beam(FIB),andcommerciallyavailablenumericaldesigntoollikeFinite-DifferenceTime-Domain(FDTD)haveenabledrapiddevelopmentofsurfaceplasmon(SP)enhancedphotodetectors.Inthisreviewarticle,thebasicmechanismsbehindtheSP-enhancedphotodetection,thedifferenttypeofplasmonicnanostructuresutilizedforenhancement,andthereportedSP-enhancedinfraredphotodetectorswillbediscussed.

  • 标签: INFRARED PHOTODETECTION PLASMONIC STRUCTURES surface PLASMON
  • 简介:Theauthordesignedtwoalgorithmsfordistributedcooperationamongmultiplevideostreamssharingcommoncommunicationresources.Thealgorithmstakeadvantageofanoptimizationframeworkthatcharacterizesvideopacketssuchthatjointresourceallocationcanbeimplementednotonlyoverthepacketsofasinglestream,butalsoacrosspacketsofdifferentstreams.Thefirstalgorithmenablescollaborationamongmultiplevideosendersinan802.11CSMA/CAwirelessnetworksuchthattheirjointperformanceismaximized.Viathealgorithm,theuserscooperativelyestablishtransmissionprioritiesbasedontheassignedcharacterizationsoftheirvideopackets.Thesecondtechniqueallowsforlow-complexityjointbandwidthadaptationofmultiplevideostreamsatintermediatenetworknodesintheIntemetinordertomaximizetheoverallnetworkperformance.Theauthoranalyzestheadvantagesoftheproposedalgorithmsoverconventionalsolutionsemployedinsuchscenarios.Itisshownthatdependingonsystemparameterssuchasavailablenetworkdataratetheproposedtechniquescanprovidesubstantialgainsinend-to-endperformance.

  • 标签: MEDIA cooperation DISTRIBUTED video streaming Wireless
  • 简介:OnNovember12thto14th,1991,theSecondChina/AustraliaJointWorkingGroupMeetingonEnergywasheldinCanberra,Australia.TheChinesedel-egation,headedbyViceMinisterHuFuguoattendedthemeeting,whichhadprovedasasuccessfulandconstructiveopportunityforbothcountriesinfurtherunderstandingofeachother’snationalenergydevelopmentandaimingatpromotionoffuturecooperations.TheAustraliandelegationwaschaired

  • 标签: AUSTRALIA COOPERATION aiming mutual headed MINISTER
  • 简介:LetG=(V,E)beaconnectedgraphandmbeapositiveinteger,theconditionaledgeconnectivityλδmistheminimumcardinalityofasetofedges,ifitexists,whosedeletiondisconnectsGandleaveseachremainingcomponentwithminimumdegreeδnolessthanm.Thisstudyshowsthatλδ1(Qn,k)=2n,λδ2(Qn,k)=4n-4(2≤k≤n-1,n≥3)forn-dimensionalenhancedhypercubeQn,k.Meanwhile,anothereasyproofaboutλδ2(Qn)=4n-8,forn≥3isproposed.Theresultsofenhancedhypercubeincludethecasesoffoldedhypercube.

  • 标签: interconnected networks CONNECTIVITY CONDITIONAL edge con-
  • 简介:耐克森公司研发的新型耐火电缆PYROLYONEEnhanced,主要应用于火灾探测和消防报警系统、公共广播系统和应急照明系统。产品符合BS8434-2:2003、BS5839-1:2002、BS7629标准,其柔性结构适合在任何情况下安装和敷设。

  • 标签: PYROLYON E ENHANCED 耐火电缆 耐火性能 结构设计
  • 简介:Inmausoleummurals,existingbubblesareonekindofthemostharmfuldefectsfortherepairandprotectionofrelics.Forthisreason,itisnecessarytodetectbubbles,especiallytheoneswithsmallsize.Amethodtodetectthesmallbubbleswithenhancedterahertz(THz)imagesisproposed.Tosimulatethebubblesinthemausoleummurals,circulargrooveshavebeenhiddenintheplasterandthenmeasuredbytheTHzreflectedtimedomainspectroscopyimagingsystem.Toobservethesmallbubblesinmurals,acomprehensiveenhancementalgorithmisadoptedtoprocesstheobtainedTHzimages.Withtheenhancedmethod,thecirculargroovesinthemuralscanbeobservedclearly,evenforthecirculargroovewithadiameterof1.5mm.Theresultsindicatethattheproposedcomprehensivemethodcanbeusedtodetectthetinydefectsofmurals.

  • 标签:
  • 简介:Whenasilicaopticalfiberisusedfortransmittingultraviolet(UV)light,theproblemsassociatedwiththedamageandtransmissiondeteriorationofsilicafiberintheUVregionneedtobesolvedinthefabricationprocess.Inthispaper,animprovedsilicafiberfabricationprocesswaspresentedtoenhanceUVtransmission,whichcombinedtheUVpre-irradiationonhigh-OHconcentrationpreformwithheattreatmentwhiledrawingfiber.Theimpactofthestructuraldefectsandcolorcenterswasdiminishedgreatlybythenewmethodoffabrication.Theexperimentalresultsaccordedwiththetheoreticalanalysis,andtransmissionwasimprovedabout0.4-0.7dB/mforwavelengthfrom350to400nm.

  • 标签: 硅光纤 增强紫外线传输 制作工艺 波长
  • 简介:Since2007whenRegulationsonGovernmentInformationDisclosurewasadopted,theStateCouncilhasissuedalmostadozendocumentstoguidegovernmentinformationdisclosurearoundthecountry.Thesedocumentshavegraduallyexpandedthescopeofdisclosureandrecognizedthesignificantroleoftransparencyinpromotingtherightstoinformation,participationandsupervision,andinbuildingagovernmentthatisinnovative,impartialandoperatingunderthelaw.Meanwhile,thesedocumentshave,inboththeoryandpractice,exceededthelimitoftheRegulations,posingachallengetoincreasinggovernmenttransparencyproposedattheThirdPlenarySessionoftheEighteenthCPCCentralCommittee.

  • 标签: GOVERNMENT information DISCLOSURE human RIGHTS PROTECTION
  • 简介:Transparenthydroxyapatite(HAp)ceramicswiththegrainsizeranging86-1300nmweresuccessfullysynthesizedbysparkplasmasintering(SPS)at925-1200℃.Allthesampleachievedfinaldensityhigherthan99.7%.ThephasestabilitywasidentifiedbyX-raydiffraction(XRD)andFouriertransforminfraredspectroscopy(FTIR).TheexperimentalresultsindicatethatthereisnodecompositionordehydroxylationduringtheSPSprocesses.TheinfluencesofmicrostructurerefinementonthehardnesswereinvestigatedusingHallPetch(H-P)relationship,andthehardnessoftransparentHApceramicincreaseswiththedecreaseofgrainsize.Itisdemonstratedthatthegrainboundariesanddefectsplayimportantrolesonthehardness.

  • 标签: HYDROXYAPATITE TRANSPARENT HARDNESS GRAIN size microstructure REFINEMENT
  • 简介:Theeffectoftheimprovementofcommercialactivatedcarbon(AC)onitsspecificcapacitanceandhighratecapabilityofdoublelayer(dl)charging/dischargingprocesshasbeenstudied.TheimprovementofACwascarriedoutviaasecondaryactivationundersteaminthepresenceofcatalystNiCl2,andthesuitableconditionwasfoundtobeaheattreatmentatabout875℃for1h.Underthoseconditions,thedischargespecificcapacitanceoftheimprovedACincreasesupto53.67F/g,showinganincreaseofabout25%ascomparedwiththatofas-receivedAC.Thegoodrectangular-shapedvoltammogramsandA.C.impedancespectraprovethatthehighratecapabilityofthecapacitormadeoftheimprovedACisenhancedsignificantly.Thecapacitanceresistance(RC)timeconstantofthecapacitorcontainingtheimprovedACis1.74s,whichismuchlowerthanthatoftheonecontainingas-receivedAC(anRCvalueof4.73s).ItisnotedthatbothkindsofACsamplesshowasimilarspecificsurfaceareaandporesizedistribution,butsomechangeshavetakenplaceinthecarbonsurfacegroups,especiallyadecreaseintheconcentrationofsurfacecarbonylgroupsaftertheimprovement,whichhavebeenverifiedbymeansofX-photoelectronspectroscopy.Accordingly,itissuggestedthatthedecreaseintheconcentrationofsurfacecarbonylgroupsfortheimprovedACisbeneficialtotheorganicelectrolyteionpenetratingintothepores,thusleadingtotheincreaseinboththespecificcapacitanceandhighratecapabilityofthesupercapacitor.

  • 标签: 活性炭 次级活化 电容性能 电偶层电容器 表面群
  • 简介:AbstractEnhanced recovery after cesarean (ERAC) delivery is an evidence-based, multi-disciplinary approach throughout pre-, intra-, post-operative period. The ultimate goal of ERAC is to enhance recovery and improve the maternal and neonatal outcomes. This review highlights the role of anesthesiologist in ERAC protocols. This review provided a general introduction of ERAC including the purposes and the essential elements of ERAC protocols. The tool used for evaluating the quality of ERAC (ObsQoR-11) was discussed. The role of anesthesiologist in ERAC should cover the areas including management of peri-operative hypotension, prevention and treatment of intra- and post-operative nausea and vomiting, prevention of hypothermia and multi-modal peri-operative pain management, and active pre-operative management of unplanned conversion of labor analgesia to cesarean delivery anesthesia. Although some concerns still remain, ERAC implementation should not be delayed. Regular assessment and process improvement should be imbedded into the protocol. Further high-quality studies are warranted to demonstrate the effectiveness and efficacy of the ERAC protocol.

  • 标签: Cesarean delivery Cesarean section Enhanced recovery after surgery
  • 简介:Objective:ToevaluatethevalueofenhancedluminescenceenzymeimmunoassayinthediagnosisofNeisseriagonorrhea(NG)infection.Methods:Anti-catalaseantibodyforNeisseriagonorrheaecombinedwithenhancedluminescenceenzymeimmunoassaywereusedtotestforN.gonorrhea.Results:Aminimumof1×10^4/CFUofGCingenitaltractsecretionsorurinecouldbedetectedwiththetechniqueofluminescenceenzymeimmunoassay.Conclusion:TheenhancedluminescenceenzymeimmunoassayhastheadvantageofhighsensitivityandspecificityfordiagnosingNGfromgenitourinarytractsecretionandurine.

  • 标签: 淋病 增强发光酶免疫测定 快速诊断 性传播疾病 NG 反过氧化氢酶抗体
  • 简介:NormalHamanSpectra(NRS)ofsolidPMT(1-phenyl-5-mercaptotetrazole)andMBT(2-mercaptobenzothiazole)andtheirsurfaceenhancedRamanspectra(SERS)adsorbedonthesurfaceofthesilversubcolloidalparticlesarereportedandcompared.ItissupposedthatPMTadsorbedonsilverwithbothNandSatomswhereasMBTmaybeadsorbedonsilverthroughSatom.

  • 标签: SILVER adsorbed SERS SURFACE supposed SALTS
  • 简介:与直接脱离相比,prepulse被用来在激光血浆推进提高联合系数。联合系数与在主要横梁和prepulse之间的延期时间是相关的,这被发现。在12ns的一延期时间,联合系数到达5.8脳的最大值10?5N/W。CLC数字O532+.25文件代码A

  • 标签: 耦合系数 激光等离子推进 预脉冲 激光加热
  • 简介:这篇文章在切换的概括多协议标签(GMPLS)中讨论资源冲突的问题控制光网络。基于当前的随机的重建机制和它的缺点的分析,也就是,这篇文章为改进介绍二个提高的解决方案基于优先级的资源分配机制和网络管理系统(NMS)基于顺序的资源分配机制。试验性的结果证明介绍机制比以连接安装/恢复时间和成功的率重建答案的原来的随机更好表现。

  • 标签: 自动转换光网络 资源冲突 控制面 多协议标记交换