BS ISO/IEC 8473-5-1997 信息技术.提供无连接模式网络服务协议.由综合业务数字网(ISDN)线路交换B信道基本服务规定

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【英文标准名称】:Informationtechnology-Protocolforprovidingtheconnectionless-modenetworkservice-ProvisionoftheunderlyingservicebyISDNcircuit-switchedB-channels
【原文标准名称】:信息技术.提供无连接模式网络服务协议.由综合业务数字网(ISDN)线路交换B信道基本服务规定
【标准号】:BSISO/IEC8473-5-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-12-15
【实施或试行日期】:1997-12-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:协议实现一致性语句;远程通信;协议;计算机电路;计算机网络;信息交流;综合业务数字网络;数据传输;开放系统互连;网络层;地址(数据处理);协议履行一致性声明;电信;线路交换网络;数字电路;通信规程;通信网;通信;协议执行一致命题;公共网络;电路网络;无中继(OSI);合格;电话号码;网络服务;包交换网络;数据处理;识别方法
【英文主题词】:Datalinksystem;Datanetwork;Mainspowersupply;Networkservices;Opensystemsinterconnection;OSI;Telecommunication;Telecommunications;Transmissionprotocol
【摘要】:ThisRecommendation|InternationalStandardspecifiesthewayinwhichtheunderlyingserviceassumedbytheprotocoldefinedbyITU-TRec.X.233|ISO/IEC8473-1isprovidedbyasubnetworkthatconformstoRecommen-dationQ.931throughtheoperationofaSubnetworkDependentConvergenceFunction(SNDCF)asdescribedinISO/IEC8648.ThisRecommendation|InternationalStandardalsoprovidesthePICSproformaforthisprotocol,incompliancewiththerelevantrequirements,andinaccordancewiththerelevantguidance,giveninCCITTRec.X.290andISO/IEC9646-1.
【中国标准分类号】:M11
【国际标准分类号】:33_080;35_100_30
【页数】:20P;A4
【正文语种】:英语

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【英文标准名称】:StandardTestMethodforVaporPressureofPetroleumProducts(ReidMethod)
【原文标准名称】:石油产品蒸气压力的标准试验方法(瑞德法)
【标准号】:ASTMD323-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D02.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:crudeoils;gasoline;Reidvaporpressure;spark-ignitionenginefuel;vaporpressure;volatility;Reidvaporpressure;Vaporpressure(VPx)--petroleumproducts
【摘要】:Vaporpressureisanimportantphysicalpropertyofvolatileliquids.Thistestmethodisusedtodeterminethevaporpressureat37.8x00B0;C(100x00B0;F)ofpetroleumproductsandcrudeoilswithinitialboilingpointabove0x00B0;C(32x00B0;F).Vaporpressureiscriticallyimportantforbothautomotiveandaviationgasolines,affectingstarting,warm-up,andtendencytovaporlockwithhighoperatingtemperaturesorhighaltitudes.Maximumvaporpressurelimitsforgasolinearelegallymandatedinsomeareasasameasureofairpollutioncontrol.Vaporpressureofcrudeoilsisofimportancetothecrudeproducerandtherefinerforgeneralhandlingandinitialrefinerytreatment.Vaporpressureisalsousedasanindirectmeasureoftheevaporationrateofvolatilepetroleumsolvents.1.1Thistestmethodcoversproceduresforthedeterminationofvaporpressure(seeNote1)ofgasoline,volatilecrudeoil,andothervolatilepetroleumproducts.1.2ProcedureAisapplicabletogasolineandotherpetroleumproductswithavaporpressureoflessthan180kPa(26psi).1.3ProcedureBmayalsobeapplicabletotheseothermaterials,butonlygasolinewasincludedintheinterlaboratorytestprogramtodeterminetheprecisionofthistestmethod.1.4ProcedureCisformaterialswithavaporpressureofgreaterthan180kPa(26psi).1.5ProcedureDforaviationgasolinewithavaporpressureofapproximately50kPa(7psi).Note18212;Becausetheexternalatmosphericpressureiscounteractedbytheatmosphericpressureinitiallypresentinthevaporchamber,theReidvaporpressureisanabsolutepressureat37.8x00B0;C(100x00B0;F)inkilopascals(pounds-forcepersquareinch).TheReidvaporpressurediffersfromthetruevaporpressureofthesampleduetosomesmallsamplevaporizationandthepresenceofwatervaporandairintheconfinedspace.1.6Thistestmethodisnotapplicabletoliquefiedpetroleumgasesorfuelscontainingoxygenatedcompoundsotherthanmethylt-butylether(MTBE).Fordeterminationofthevaporpressureofliquefiedpetroleumgases,refertoTestMethodD1267orTestMethodD6897.Fordeterminationofthevaporpressureofgasoline-oxygenateblends,refertoTestMethodD4953.Theprecisionforcrudeoilhasnotbeendeterminedsincetheearly1950s(seeNote3).TestMethodD6377hasbeenapprovedasamethodfordeterminationofvaporpressureofcrudeoil.IP481isatestmethodfordeterminationoftheair-saturatedvaporpressureofcrudeoil.1.7ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificwarningstatementsaregiveninSections7and18,and12.5.3,15.5,21.2,A1.1.2,A1.1.6,andA2.3.
【中国标准分类号】:E31
【国际标准分类号】:75_080
【页数】:10P.;A4
【正文语种】:英语