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.
简介:Theauthordesignedtwoalgorithmsfordistributedcooperationamongmultiplevideostreamssharingcommoncommunicationresources.Thealgorithmstakeadvantageofanoptimizationframeworkthatcharacterizesvideopacketssuchthatjointresourceallocationcanbeimplementednotonlyoverthepacketsofasinglestream,butalsoacrosspacketsofdifferentstreams.Thefirstalgorithmenablescollaborationamongmultiplevideosendersinan802.11CSMA/CAwirelessnetworksuchthattheirjointperformanceismaximized.Viathealgorithm,theuserscooperativelyestablishtransmissionprioritiesbasedontheassignedcharacterizationsoftheirvideopackets.Thesecondtechniqueallowsforlow-complexityjointbandwidthadaptationofmultiplevideostreamsatintermediatenetworknodesintheIntemetinordertomaximizetheoverallnetworkperformance.Theauthoranalyzestheadvantagesoftheproposedalgorithmsoverconventionalsolutionsemployedinsuchscenarios.Itisshownthatdependingonsystemparameterssuchasavailablenetworkdataratetheproposedtechniquescanprovidesubstantialgainsinend-to-endperformance.
简介:OnNovember12thto14th,1991,theSecondChina/AustraliaJointWorkingGroupMeetingonEnergywasheldinCanberra,Australia.TheChinesedel-egation,headedbyViceMinisterHuFuguoattendedthemeeting,whichhadprovedasasuccessfulandconstructiveopportunityforbothcountriesinfurtherunderstandingofeachother’snationalenergydevelopmentandaimingatpromotionoffuturecooperations.TheAustraliandelegationwaschaired
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.
简介:Inmausoleummurals,existingbubblesareonekindofthemostharmfuldefectsfortherepairandprotectionofrelics.Forthisreason,itisnecessarytodetectbubbles,especiallytheoneswithsmallsize.Amethodtodetectthesmallbubbleswithenhancedterahertz(THz)imagesisproposed.Tosimulatethebubblesinthemausoleummurals,circulargrooveshavebeenhiddenintheplasterandthenmeasuredbytheTHzreflectedtimedomainspectroscopyimagingsystem.Toobservethesmallbubblesinmurals,acomprehensiveenhancementalgorithmisadoptedtoprocesstheobtainedTHzimages.Withtheenhancedmethod,thecirculargroovesinthemuralscanbeobservedclearly,evenforthecirculargroovewithadiameterof1.5mm.Theresultsindicatethattheproposedcomprehensivemethodcanbeusedtodetectthetinydefectsofmurals.
简介:Whenasilicaopticalfiberisusedfortransmittingultraviolet(UV)light,theproblemsassociatedwiththedamageandtransmissiondeteriorationofsilicafiberintheUVregionneedtobesolvedinthefabricationprocess.Inthispaper,animprovedsilicafiberfabricationprocesswaspresentedtoenhanceUVtransmission,whichcombinedtheUVpre-irradiationonhigh-OHconcentrationpreformwithheattreatmentwhiledrawingfiber.Theimpactofthestructuraldefectsandcolorcenterswasdiminishedgreatlybythenewmethodoffabrication.Theexperimentalresultsaccordedwiththetheoreticalanalysis,andtransmissionwasimprovedabout0.4-0.7dB/mforwavelengthfrom350to400nm.
简介:Since2007whenRegulationsonGovernmentInformationDisclosurewasadopted,theStateCouncilhasissuedalmostadozendocumentstoguidegovernmentinformationdisclosurearoundthecountry.Thesedocumentshavegraduallyexpandedthescopeofdisclosureandrecognizedthesignificantroleoftransparencyinpromotingtherightstoinformation,participationandsupervision,andinbuildingagovernmentthatisinnovative,impartialandoperatingunderthelaw.Meanwhile,thesedocumentshave,inboththeoryandpractice,exceededthelimitoftheRegulations,posingachallengetoincreasinggovernmenttransparencyproposedattheThirdPlenarySessionoftheEighteenthCPCCentralCommittee.
简介:Transparenthydroxyapatite(HAp)ceramicswiththegrainsizeranging86-1300nmweresuccessfullysynthesizedbysparkplasmasintering(SPS)at925-1200℃.Allthesampleachievedfinaldensityhigherthan99.7%.ThephasestabilitywasidentifiedbyX-raydiffraction(XRD)andFouriertransforminfraredspectroscopy(FTIR).TheexperimentalresultsindicatethatthereisnodecompositionordehydroxylationduringtheSPSprocesses.TheinfluencesofmicrostructurerefinementonthehardnesswereinvestigatedusingHallPetch(H-P)relationship,andthehardnessoftransparentHApceramicincreaseswiththedecreaseofgrainsize.Itisdemonstratedthatthegrainboundariesanddefectsplayimportantrolesonthehardness.
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.
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.
简介:Objective:ToevaluatethevalueofenhancedluminescenceenzymeimmunoassayinthediagnosisofNeisseriagonorrhea(NG)infection.Methods:Anti-catalaseantibodyforNeisseriagonorrheaecombinedwithenhancedluminescenceenzymeimmunoassaywereusedtotestforN.gonorrhea.Results:Aminimumof1×10^4/CFUofGCingenitaltractsecretionsorurinecouldbedetectedwiththetechniqueofluminescenceenzymeimmunoassay.Conclusion:TheenhancedluminescenceenzymeimmunoassayhastheadvantageofhighsensitivityandspecificityfordiagnosingNGfromgenitourinarytractsecretionandurine.
简介:NormalHamanSpectra(NRS)ofsolidPMT(1-phenyl-5-mercaptotetrazole)andMBT(2-mercaptobenzothiazole)andtheirsurfaceenhancedRamanspectra(SERS)adsorbedonthesurfaceofthesilversubcolloidalparticlesarereportedandcompared.ItissupposedthatPMTadsorbedonsilverwithbothNandSatomswhereasMBTmaybeadsorbedonsilverthroughSatom.
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