IEC 62141-2005 使用12.65mm磁带和联合MPEG-4压缩的螺旋扫描数字视频盒式记录格式.D-16型格式

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【英文标准名称】:Helical-scandigitalvideocassetterecordingformatusing12,65mmmagnetictapeandincorporatingMPEG-4compression-TypeD-16Format
【原文标准名称】:使用12.65mm磁带和联合MPEG-4压缩的螺旋扫描数字视频盒式记录格式.D-16型格式
【标准号】:IEC62141-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-10
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:数字录制技术;串行;记录系统;数据布置;视频记录;娱乐电子学;磁记录;循环时间;录像带;尺寸;尺寸;盒式录象带;数据块;数据压缩;数字的;数字记录法;特性;长度;螺旋扫描记录(法);磁带;格式编排;纵向磁迹;家用;参数;VHS;记录;磁带记录;机械性能;盒式磁带;测定;音频;规范(验收);定义;接口;MPEG
【英文主题词】:Audio;Cassettes;Cassettes(magnetictapes);Cycletime;Datablocks;Datacompression;Datalayout;Definitions;Determinations;Digital;Digitalrecordingmethods;Digitalrecordingtechnique;Dimensions;Entertainmentelectronics;Formats;Formatting;Helicalscanrecording;Homeuse;Householduse;Interfaces;Interfaces(dataprocessing);Length;Longitudinaltracks;Magneticrecording;Magnetictaperecordings;Magnetictapes;Mechanicalproperties;MPEG;Parameters;Properties;Recording;Recordingsystems;Serial;Specification(approval);VHS;Videocassettes;Videorecording;Videotapes
【摘要】:ThisInternationalStandardspecifiesthetrackcontent,format,andrecordingmethodofthedatablockscontainingcompressedvideo,AES3audiodata,andassociateddatawhichformthehelicalrecordson12,65mmtapeincassettes.Thisstandardsupportsrecordingofsourcepictureformatsusing1920×1080pixelswiththe4:4:4and4:2:2samplingstructurespecifiedinSMPTE274Mattheframerateof23,98Hz,24Hz,25Hzand29,97Hz,andusing1280×720pixelswiththe4:2:2samplingstructurespecifiedinSMPTE296Mattheframeratesof50Hzand59,94Hz(seenote).Thisstandardalsosupportsrecordingof12channelsofAES3audiodataand3linesofuncompressedblankingintervaldata.ThisstandardincludespacketizingandshufflingoperationssupportingpicturecompressionusingtheDCTandDPCMencodingmethodsdefinedbyISO/IEC14496-2(MPEG-4simplestudioprofile).NOTEEarlyimplementationsofthisstandardmightnotcomplytotheframerateof50HzasspecifiedinSMPTE296M.
【中国标准分类号】:M71
【国际标准分类号】:33_160_40
【页数】:108P.;A4
【正文语种】:英语


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【英文标准名称】:StandardTestMethodforApplicationandAnalysisofRadiometricMonitorsforReactorVesselSurveillance,E706(IIIA)
【原文标准名称】:反应堆容器监控用辐射测量监控仪应用和分析的标准试验方法E706(IIIA)
【标准号】:ASTME1005-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E10.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:activity;fissionmonitor;monitorfoil;neutronfluence;pressurevessel;radiometricmonitor;reactionrate;reactorsurveillance
【摘要】:Radiometricmonitorsshallprovideaprovenpassivedosimetrytechniqueforthedeterminationofneutronfluencerate(fluxdensity),fluence,andspectruminadiversevarietyofneutronfields.Thesedataarerequiredtoevaluateandestimateprobablelong-termradiation-induceddamagetonuclearreactorstructuralmaterialssuchasthesteelusedinreactorpressurevesselsandtheirsupportstructures.Anumberofradiometricmonitors,theircorrespondingneutronactivationreactions,andradioactivereactionproductsandsomeofthepertinentnuclearparametersoftheseRMsandproductsarelistedinTable1.Table2providesdata(35)onthecumulativeandindependentfissionyieldsoftheimportantfissionmonitors.Notincludedinthesetablesarecontributionstotheyieldsfromphoto-fission,whichcanbeespeciallysignificantfornon-fissilenuclides(23-29,36-39).1.1Thismethoddescribesgeneralproceduresformeasuringthespecificactivitiesofradioactivenuclidesproducedinradiometricmonitors(RMs)bynuclearreactionsinducedduringsurveillanceexposuresforreactorvesselsandsupportstructures.MoredetailedproceduresforindividualRMsareprovidedinseparatestandardsidentifiedin2.1andinRefs11,24-27.Themeasurementresultscanbeusedtodefinecorrespondingneutroninducedreactionratesthatcaninturnbeusedtocharacterizetheirradiationenvironmentofthereactorvesselandsupportstructure.Theprincipalmeasurementtechniqueishighresolutiongamma-rayspectrometry,althoughX-rayphotonspectrometryandBetaparticlecountingareusedtoalesserdegreeforspecificRMs(1-29).1.1.1Themeasurementproceduresincludecorrectionsfordetectorbackgroundradiation,randomandtruecoincidencesumminglosses,differencesingeometrybetweencalibrationsourcestandardsandtheRMs,selfabsorptionofradiationbytheRM,otherabsorptioneffects,radioactivedecaycorrections,andburnoutofthenuclideofinterest(1-10,12-22).1.1.2Specificactivitiesarecalculatedbytakingintoaccountthetimedurationofthecount,theelapsedtimebetweenstartofcountandtheendoftheirradiation,thehalflife,themassofthetargetnuclideintheRM,andthebranchingintensitiesoftheradiationofinterest.Usingtheappropriatehalflifeandknownconditionsoftheirradiation,thespecificactivitiesmaybeconvertedintocorrespondingreactionrates(24-30).1.1.3Proceduresforcalculationofreactionratesfromtheradioactivitymeasurementsandtheirradiationpowertimehistoryareincluded.Areactionratecanbeconvertedtoneutronfluencerateandfluenceusingtheappropriateintegralcrosssectionandeffectiveirradiationtimevalues,and,withotherreactionratescanbeusedtodefinetheneutronspectrumthroughtheuseofsuitablecomputerprograms(24-30).1.1.4TheuseofbenchmarkneutronfieldsforcalibrationofRMscanreducesignificantlyoreliminatesystematicerrorssincemanyparameters,andtheirrespectiveuncertainties,requiredforcalculationofabsolutereactionratesarecommontoboththebenchmarkandtestmeasurementsandthereforeareselfcanceling.Thebenchmarkequivalentfluencerates,fortheenvironmenttested,canbecalculatedfromadirectratioofthemeasuredsaturatedactivitiesinthetwoenvironmentsandthecertifiedbenchmarkfluencerate(24-30).1.2ThismethodisintendedtobeusedinconjunctionwithASTMGuideE844.ThefollowingexistingorproposedASTMpractices,guides,andmetho......
【中国标准分类号】:F82
【国际标准分类号】:17_240
【页数】:10P.;A4
【正文语种】:英语


【英文标准名称】:Shipbuilding;Inlandnavigationtowinghooks;Scaleoftractiveefforts
【原文标准名称】:造船内河航行拖钩牵引力等级
【标准号】:ISO3786-1975
【标准状态】:现行
【国别】:国际
【发布日期】:1975-12
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC8
【标准类型】:()
【标准水平】:()
【中文主题词】:拉力;内河航行;拉钩;拖钩;牵引属具;造船;牵引设备;分类;分类系统;内河运输
【英文主题词】:Classification;Classificationsystems;Inlandnavigation;Inlandwaterwaytransport;Shipbuilding;Towingattachments;Towingequipment;Towinghooks
【摘要】:Applicabletotowinghooksusedontugsofalltypesandpurposes,intendedfortowageoninlandwaterways.
【中国标准分类号】:U24
【国际标准分类号】:47_020_50
【页数】:1P;A4
【正文语种】:英语