BS 6701-1994 与电信系统专门连接的设备安装实用规程
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【英文标准名称】:Codeofpracticeforinstallationofapparatusintendedforconnectiontocertaintelecommunicationsystems
【原文标准名称】:与电信系统专门连接的设备安装实用规程
【标准号】:BS6701-1994
【标准状态】:作废
【国别】:英国
【发布日期】:1994-12-15
【实施或试行日期】:1994-12-15
【发布单位】:英国标准学会(BSI)
【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】:M04
【国际标准分类号】:33_020
【页数】:30P;A4
【正文语种】:英语
【原文标准名称】:与电信系统专门连接的设备安装实用规程
【标准号】:BS6701-1994
【标准状态】:作废
【国别】:英国
【发布日期】:1994-12-15
【实施或试行日期】:1994-12-15
【发布单位】:英国标准学会(BSI)
【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】:M04
【国际标准分类号】:33_020
【页数】:30P;A4
【正文语种】:英语
下载地址: 点击此处下载
上一篇: BS ISO/IEC 11544-1994 信息技术.画面和声音信息的代码表示.顺次双电平图像压缩
下一篇: BS EN 29318-4-1994 信息技术.智能外部设备接口.磁带机的设备通用命令集
下一篇: BS EN 29318-4-1994 信息技术.智能外部设备接口.磁带机的设备通用命令集
【英文标准名称】:StandardSpecificationforMineralSpirits(PetroleumSpirits)(HydrocarbonDryCleaningSolvent)
【原文标准名称】:矿物溶剂油(石油溶液油)(烃干洗溶液)的标准规格
【标准号】:ASTMD235-2002(2007)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:D01.35
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:Doctortest;hydrocarbondrycleaningsolvents;mineralspirits;solvents;StoddardSolvent;Detergentmaterials/systems--drycleaning;Doctortest;Drycleaningmaterials/processes/tests--specifications;Hydrocarbonsolvents--specifications;Mercaptans;Mi
【摘要】:1.1Thisspecificationcoversfourtypesofhydrocarbonsolvents,normallypetroleumdistillates,usedprimarilyinthecoatingsanddry-cleaningindustries.x201C;Mineralspiritsx201D;isthemostcommonnameforthesesolvents.Theyarealsocalledx201C;StoddardSolventsx201D;whenusedfordrycleaning.1.2Forspecifichazardinformationandguidance,seethesupplier''sMaterialSafetyDataSheetformaterialslistedinthisspecification.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thefollowingappliestoallspecifiedlimitsinthisstandard;forpurposesofdeterminingconformancewiththisstandard,anobservedvalueoracalculatedvalueshallberoundedoffx201C;tothenearestunitx201D;inthelastright-handdigitusedinexpressingthespecificationlimit,inaccordancewiththerounding-offmethodofPracticeE29.1.5Thefollowinghazardcaveatpertainsonlytothetestmethodportion,6.1.10,ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G16
【国际标准分类号】:97_060
【页数】:3P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDeterminingtheMolarMassofSodiumAlginatebySizeExclusionChromatographywithMulti-angleLightScatteringDetection(SEC-MALS)
【原文标准名称】:用体积排阻色谱与多角度光散射检测法(SEC-MALS)测定海藻酸钠的摩尔质量的标准试验方法体
【标准号】:ASTMF2605-2008e1
【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】:F04.42
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Alginates;Sizeexclusionchromatographywithmulti-anglelightscatteringdetection(SEC-MALS);Tissueengineeredmedicalproducts(TEMPs)
【摘要】:Thecompositionandsequentialstructureofalginate,aswellasthemolarmassandmolarmassdistribution,determinesthefunctionalityofalginateinanapplication.Forinstance,thegellingpropertiesofanalginatearehighlydependentuponthecompositionandmolarmassofthepolymer.Lightscatteringisoneofveryfewmethodsavailableforthedeterminationofabsolutemolarmassandstructure,anditisapplicableoverthebroadestrangeofmolarmassesofanymethod.Combininglightscatteringdetectionwithsizeexclusionchromatography(SEC),whichsortsmoleculesaccordingtosize,givestheabilitytoanalyzepolydispersesamples,aswellasobtaininginformationonbranchingandmolecularconformation.Thismeansthatboththenumber-averageandmass-averagevaluesformolarmassandsizemaybeobtainedformostsamples.Furthermore,onehastheabilitytocalculatethedistributionsofthemolarmassesandsizes.Multi-anglelaserlightscattering(MALS)isatechniquewheremeasurementsaremadesimultaneouslyoverarangeofdifferentangles.MALSdetectioncanbeusedtoobtaininformationonmolecularsize,sincethisparameterisdeterminedbytheangularvariationofthescatteredlight.Molarmassmayinprinciplebedeterminedbydetectingscatteredlightatasinglelowangle(LALLS).However,advantageswithMALSascomparedtoLALLSare:(1)lessnoiseatlargerangles,(2)theprecisionofmeasurementsaregreatlyimprovedbydetectingatseveralangles,and(3)theabilitytodetectangularvariationallowsdeterminationofsize,branching,aggregation,andmolecularconformation.Sizeexclusionchromatographyusescolumns,whicharetypicallypackedwithpolymerparticlescontaininganetworkofuniformporesintowhichsoluteandsolventmoleculescandiffuse.Whileinthepores,moleculesareeffectivelytrappedandremovedfromtheflowofthemobilephase.Theaverageresidencetimeintheporesdependsuponthesizeofthesolutemolecules.Moleculesthatarelargerthantheaverageporesizeofthepackingareexcludedandexperiencevirtuallynoretention;theseareelutedfirst,inthevoidvolumeofthecolumn.Molecules,whichmaypenetratetheporeswillhavealargervolumeavailablefordiffusion,theywillsufferretentiondependingontheirmolecularsize,withthesmallermoleculeselutinglast.Forpolyelectrolytes,dialysisagainsttheelutionbufferhasbeensuggested,inordertoeliminateDonnan-typeartifactsinthemolarmassdeterminationbylightscattering(1,2).However,inthepresentmethod,thesizeexclusionchromatographystepprecedingthelightscatterdetectionisanefficientsubstituteforadialysisstep.ThesampleisseparatedonSECcolumnswithlargeexcessofelutionbufferfor30to40min,anditisthereforeinfullequilibriumwiththeelutionbufferwhenitreachestheMALSdetector.1.1Thistestmethodcoversthedeterminationofthemolarmassofsodiumalginateintendedforuseinbiomedicalandpharmaceuticalapplicationsaswellasintissueengineeredmedicalproducts(TEMPs)bysizeexclusionchromatographywithmulti-anglelaserlightscatteringdetection(SEC-MALS).AguideforthecharacterizationofalginatehasbeenpublishedasGuideF2064.1.2AlginateusedinTEMPsshouldbewellcharacterized,includingthemolarmassandpolydispersity(molarmassdistribution)inordertoensureuniformityandcorrectfunctionalityinthefinalproduct.Thistestmethodwillassistendusersinchoosingthecorrectalginatefortheirparticularapplication.AlginatemayhaveutilityasascaffoldormatrixmaterialforTEMPs,incellandtissueencapsulationapplications,andindrugdeliveryformulations.1.3Thevalue......
【中国标准分类号】:C10
【国际标准分类号】:11_120_10
【页数】:6P.;A4
【正文语种】:英语
【原文标准名称】:矿物溶剂油(石油溶液油)(烃干洗溶液)的标准规格
【标准号】:ASTMD235-2002(2007)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:D01.35
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:Doctortest;hydrocarbondrycleaningsolvents;mineralspirits;solvents;StoddardSolvent;Detergentmaterials/systems--drycleaning;Doctortest;Drycleaningmaterials/processes/tests--specifications;Hydrocarbonsolvents--specifications;Mercaptans;Mi
【摘要】:1.1Thisspecificationcoversfourtypesofhydrocarbonsolvents,normallypetroleumdistillates,usedprimarilyinthecoatingsanddry-cleaningindustries.x201C;Mineralspiritsx201D;isthemostcommonnameforthesesolvents.Theyarealsocalledx201C;StoddardSolventsx201D;whenusedfordrycleaning.1.2Forspecifichazardinformationandguidance,seethesupplier''sMaterialSafetyDataSheetformaterialslistedinthisspecification.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thefollowingappliestoallspecifiedlimitsinthisstandard;forpurposesofdeterminingconformancewiththisstandard,anobservedvalueoracalculatedvalueshallberoundedoffx201C;tothenearestunitx201D;inthelastright-handdigitusedinexpressingthespecificationlimit,inaccordancewiththerounding-offmethodofPracticeE29.1.5Thefollowinghazardcaveatpertainsonlytothetestmethodportion,6.1.10,ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G16
【国际标准分类号】:97_060
【页数】:3P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDeterminingtheMolarMassofSodiumAlginatebySizeExclusionChromatographywithMulti-angleLightScatteringDetection(SEC-MALS)
【原文标准名称】:用体积排阻色谱与多角度光散射检测法(SEC-MALS)测定海藻酸钠的摩尔质量的标准试验方法体
【标准号】:ASTMF2605-2008e1
【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】:F04.42
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Alginates;Sizeexclusionchromatographywithmulti-anglelightscatteringdetection(SEC-MALS);Tissueengineeredmedicalproducts(TEMPs)
【摘要】:Thecompositionandsequentialstructureofalginate,aswellasthemolarmassandmolarmassdistribution,determinesthefunctionalityofalginateinanapplication.Forinstance,thegellingpropertiesofanalginatearehighlydependentuponthecompositionandmolarmassofthepolymer.Lightscatteringisoneofveryfewmethodsavailableforthedeterminationofabsolutemolarmassandstructure,anditisapplicableoverthebroadestrangeofmolarmassesofanymethod.Combininglightscatteringdetectionwithsizeexclusionchromatography(SEC),whichsortsmoleculesaccordingtosize,givestheabilitytoanalyzepolydispersesamples,aswellasobtaininginformationonbranchingandmolecularconformation.Thismeansthatboththenumber-averageandmass-averagevaluesformolarmassandsizemaybeobtainedformostsamples.Furthermore,onehastheabilitytocalculatethedistributionsofthemolarmassesandsizes.Multi-anglelaserlightscattering(MALS)isatechniquewheremeasurementsaremadesimultaneouslyoverarangeofdifferentangles.MALSdetectioncanbeusedtoobtaininformationonmolecularsize,sincethisparameterisdeterminedbytheangularvariationofthescatteredlight.Molarmassmayinprinciplebedeterminedbydetectingscatteredlightatasinglelowangle(LALLS).However,advantageswithMALSascomparedtoLALLSare:(1)lessnoiseatlargerangles,(2)theprecisionofmeasurementsaregreatlyimprovedbydetectingatseveralangles,and(3)theabilitytodetectangularvariationallowsdeterminationofsize,branching,aggregation,andmolecularconformation.Sizeexclusionchromatographyusescolumns,whicharetypicallypackedwithpolymerparticlescontaininganetworkofuniformporesintowhichsoluteandsolventmoleculescandiffuse.Whileinthepores,moleculesareeffectivelytrappedandremovedfromtheflowofthemobilephase.Theaverageresidencetimeintheporesdependsuponthesizeofthesolutemolecules.Moleculesthatarelargerthantheaverageporesizeofthepackingareexcludedandexperiencevirtuallynoretention;theseareelutedfirst,inthevoidvolumeofthecolumn.Molecules,whichmaypenetratetheporeswillhavealargervolumeavailablefordiffusion,theywillsufferretentiondependingontheirmolecularsize,withthesmallermoleculeselutinglast.Forpolyelectrolytes,dialysisagainsttheelutionbufferhasbeensuggested,inordertoeliminateDonnan-typeartifactsinthemolarmassdeterminationbylightscattering(1,2).However,inthepresentmethod,thesizeexclusionchromatographystepprecedingthelightscatterdetectionisanefficientsubstituteforadialysisstep.ThesampleisseparatedonSECcolumnswithlargeexcessofelutionbufferfor30to40min,anditisthereforeinfullequilibriumwiththeelutionbufferwhenitreachestheMALSdetector.1.1Thistestmethodcoversthedeterminationofthemolarmassofsodiumalginateintendedforuseinbiomedicalandpharmaceuticalapplicationsaswellasintissueengineeredmedicalproducts(TEMPs)bysizeexclusionchromatographywithmulti-anglelaserlightscatteringdetection(SEC-MALS).AguideforthecharacterizationofalginatehasbeenpublishedasGuideF2064.1.2AlginateusedinTEMPsshouldbewellcharacterized,includingthemolarmassandpolydispersity(molarmassdistribution)inordertoensureuniformityandcorrectfunctionalityinthefinalproduct.Thistestmethodwillassistendusersinchoosingthecorrectalginatefortheirparticularapplication.AlginatemayhaveutilityasascaffoldormatrixmaterialforTEMPs,incellandtissueencapsulationapplications,andindrugdeliveryformulations.1.3Thevalue......
【中国标准分类号】:C10
【国际标准分类号】:11_120_10
【页数】:6P.;A4
【正文语种】:英语