【英文标准名称】:Gasmixtures-Gravimetricpreparation-Masteringcorrelationsincomposition
【原文标准名称】:气体混合物.重量分析准备.控制成分的相关性
【标准号】:ISO/TS29041-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-02
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC158
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析和测试;化学成分;组分;气体分析;混合气体;气体;重量分析的;重量分析法;数学计算;混合物;天然气;生产
【英文主题词】:Chemicalanalysisandtesting;Chemicalcomposition;Composition;Gasanalysis;Gasmixtures;Gases;Gravimetric;Gravimetry;Mathematicalcalculations;Mixtures;Naturalgas;Production
【摘要】:InthisTechnicalSpecification,thegravimetricmixturepreparationasgiveninISO6142isinvestigatedforinfluencesofaprioriexisting,aswellascorrelationsintroducedbydataprocessing.Allcalculationsrefertoanexamplewhichconsistsinthepreparationofasyntheticnaturalgasofatargetcompositionasfollows:1,4mol%N2,1,8mol%CO2,9,4mol%ethane,3,4mol%propane,1mol%nbutane,and83mol%methane.Allconsiderationsgivenforthisexampleconcerningmixturefeasibility,choiceofpreparationprocedure,andweighingstepsandsequencesarethesameasgiveninISO6142.Thisalsoappliestoallestimatesforbasicuncertaintysourcesandthepuritytablesofthegasesusedforpreparation.Allcalculationsfollowtheprinciples,andusethetoolsandalgorithmslaiddowninAnnexA.Forthesakeofsimplicity,proceduralstepssuchasmatrixtransformation,inversionormatrixcalculusarenotdetailedeachtimetheyareusedinthecalculations.
【中国标准分类号】:E04
【国际标准分类号】:71_040_40;71_100_20
【页数】:13P;A4
【正文语种】:英语


【英文标准名称】:StandardPracticeforCalculatingBendingStrengthDesignAdjustmentFactorsforFire-Retardant-TreatedPlywoodRoofSheathing
【原文标准名称】:火焰阻滞剂处理的胶合板屋顶盖板计算弯曲强度设计调节因素的标准操作规程
【标准号】:ASTMD6305-2002e1
【标准状态】:现行
【国别】:
【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(ASTM)
【起草单位】:D07.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:胶合板;屋顶;抗弯强度;防火剂
【英文主题词】:designloadvalues;fireretardanttreatment;plywood;strengthtest;
【摘要】:Thispracticedevelopstreatmentfactorsthatshallbeusedbyfireretardantchemicalmanufacturerstoadjustbendingstrengthdesignvaluesforuntreatedplywoodtoaccountforthefire-retardanttreatmenteffects.Thispracticeusesdatafromreferencethermal-loadcyclesdesignedtosimulatetemperaturesinslopedroofsofcommondesigntoevaluateproductsfor50iterations.Thispracticeappliestomaterialinstalledusingconstructionpracticesrecommendedbythefireretardantchemicalmanufacturersthatincludeavoidingexposuretoprecipitation,directwetting,orregularcondensation.Thispracticeisnotmeanttoapplytobuildingswithsignificantlydifferentdesignsthanthosedescribedin1.3.TestMethodD5516causedthermallyinducedstrengthlossesinlaboratorysimulationswithinareasonablyshortperiod.Theenvironmentalconditionsusedinthelaboratory-activatedchemicalreactionsthatareconsideredtobesimilartothoseoccurringinthefield.Thisassumptionisthefundamentalbasisofthispractice.1.1Thispracticecoversproceduresforcalculatingbendingstrengthdesignadjustmentfactorsforfire-retardant-treatedplywoodroofsheathing.Themethodsutilizetheresultsofstrengthtestingafterexposureatelevatedtemperaturesandcomputer-generatedthermalloadprofilesreflectiveofexposuresencounteredinnormalserviceconditionsinawidevarietyofclimates.1.2Necessarily,commonlaboratorypracticeswereusedtodevelopthemethodsherein.Itisassumedthattheprocedureswillbeusedforfire-retardant-treatedplywoodinstalledusingappropriateconstructionpracticesrecommendedbythefireretardantchemicalmanufacturers,whichincludeavoidingexposuretoprecipitation,directwetting,orregularcondensation.1.3Theheatgains,solarloads,roofslopes,ventilationrates,andotherparametersusedinthispracticewerechosentoreflectcommonslopedroofdesigns.Thispracticeisapplicabletoroofsof3in12orsteeperslopes,toroofsdesignedwithventareasandventlocationsconformingtonationalstandardsofpracticeandtodesignsinwhichthebottomsideofthesheathingisexposedtoventilationair.Theseconditionsmaynotapplytosignificantlydifferentdesignsandthereforethispracticemaynotapplytosuchdesigns.1.4InformationandabriefdiscussionsupportingtheprovisionsofthispracticeareintheCommentaryintheappendix.Alarge,moredetailed,separateCommentaryisalsoavailablefromASTM.1.5Themethodologyinthispracticeisnotmeanttoaccountforallreportedinstancesoffire-retardantplywoodundergoingprematureheatdegradation.1.6Thispracticeiswrittenininch-poundunitswithSIunitsprovidedinparenthesesforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q17
【国际标准分类号】:91_060_20
【页数】:6P.;A4
【正文语种】: