ASTM D6560-2000(2005) 原油和石油产品中沥青质(庚烷不溶物)测定的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminationofAsphaltenes(HeptaneInsolubles)inCrudePetroleumandPetroleumProducts
【原文标准名称】:原油和石油产品中沥青质(庚烷不溶物)测定的标准试验方法
【标准号】:ASTMD6560-2000(2005)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:D02.14
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:asphaltenes;bitumen;crudepetroleum;dieselfuel;gasoil;heptaneinsolubleresidues;lubricatingoil;residualfueloils
【摘要】:Asphaltenesaretheorganicmoleculesofhighestmolecularmassandcarbon-hydrogenrationormallyoccurringincrudepetroleumandpetroleumproductscontainingresidualmaterial.Theymaygiveproblemsduringstorageandhandlingifthesuspensionofasphaltenemoleculesisdisturbedthroughexcessstressorincompatibility.Theyarealsothelastmoleculesinaproducttocombustcompletely,andthusmaybeoneindicatorofblacksmokepropensity.Theircompositionnormallyincludesadisproportionatelyhighquantityofthesulfur,nitrogen,andmetalspresentinthecrudepetroleumorpetroleumproduct.1.1Thistestmethodcoversaprocedureforthedeterminationoftheheptaneinsolubleasphaltenecontentofgasoil,dieselfuel,residualfueloils,lubricatingoil,bitumen,andcrudepetroleumthathasbeentoppedtoanoiltemperatureof260716;C(see).1.2Theprecisionisapplicabletovaluesbetween0.50and30.0%m/m.Valuesoutsidethisrangemaystillbevalidbutmaynotgivethesameprecisionvalues.1.3Oilscontainingadditivesmaygiveerroneousresults.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.5Thisannexcoversaprocedureforthepreparationofacrudepetroleumresidue(toppedtoanoiltemperatureof260C)suitableforthedeterminationofasphaltenecontent(see).
【中国标准分类号】:E43
【国际标准分类号】:75_080
【页数】:5P.;A4
【正文语种】:


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【英文标准名称】:Helical-scancompresseddigitalvideocassettesystemusing6,35mmmagnetictape-FormatD-12-Part2:Compressionformat
【原文标准名称】:用6.35mm磁带的螺旋扫描压缩数字视频盒式录象带系统.格式D-12.第2部分:压缩格式
【标准号】:IEC62447-2-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:盒式磁带;控制;数据块;数据压缩;数据格式;数据布置;数字录制技术;编码;英语;娱乐电子学;(数据)格式;螺旋扫描记录(法);磁带记录;MPEG;参数;记录系统;规范(验收);测试条件;盒式录象带;视频记录;视频信号
【英文主题词】:
【摘要】:ThispartofIEC62247definesthedatastructurefortheinterfaceofDV-baseddigitalaudio,subcodedata,andcompressedvideoat100Mb/s.ThisstandarddefinestheprocessesrequiredtodecodetheDV-baseddatastructureintoeightchannelsofAES-3digitalaudioat48kHz,subcodedata,andhigh-definitionvideoat1080/60i,1080/50i,and720/60p.Thefollowinghigh-definitionvideoparametersareusedinthisstandard:1080/60isystemInputvideoformat:1920×1080imagesamplingstructure,59,94Hzfieldrate,interlaceformat.Compressedvideodatarate:100Mb/s1080/50isystemInputvideoformat:1920×1080imagesamplingstructure,50Hzfieldrate,interlaceformat.Compressedvideodatarate:100Mb/s720/60psystemInputvideoformat:1280×720imagesamplingstructure,59,94Hzframerate,progressiveformat.Compressedvideodatarate:100Mb/sInthisstandard,the60Hzsystemnomenclaturereferstoboth1080/60iand720/60psystems;whereasthe50Hzsystemrefersonlytothe1080/50isystem.Thenomenclature1080-linesystemreferstoboth1080/60iand1080/50isystems,whilethe720-linesystemrefersonlytothe720/60psystem.
【中国标准分类号】:M73
【国际标准分类号】:33_160_40
【页数】:70P;A4
【正文语种】:英语


【英文标准名称】:Textilereinforcedhoses;ratedforPN40
【原文标准名称】:织物增强软管.公称压力40
【标准号】:DIN20018T.2-1991
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】: