JIS P0138-1961 纸裁切尺寸

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【英文标准名称】:PapersforDataProcessing;PapersforContinuousForms;Dimensions
【原文标准名称】:数据处理用纸.连续表格用纸.尺寸
【标准号】:DIN9771-1974
【标准状态】:作废
【国别】:德国
【发布日期】:1974-07
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:连续形式;尺寸;纸;数据处理;信息处理
【英文主题词】:Continuousforms;Dataprocessing;Dimensions;Informationprocessing;Paper
【摘要】:Papersfordataprocessing;papersforcontinuousforms;dimensionsZusammenhangmitdervonderInternationalOrganizationforStandardization(ISO)herausgegebenenInternationalenNormISO2784,,Continuousformsusedforinformationprocessing—Sizes
【中国标准分类号】:Y32;L64
【国际标准分类号】:85_080_10
【页数】:4P.;A4
【正文语种】:德语


【英文标准名称】:Poresizedistributionandporosityofsolidmaterialsbymercuryporosimetryandgasadsorption-Analysisofmesoporesandmacroporesbygasadsorption
【原文标准名称】:用水银孔率法和气体吸附法测定固体材料孔径分布和孔隙率.用气体吸附法分析介孔和微孔
【标准号】:BSISO15901-2-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2007-03-30
【实施或试行日期】:2007-03-30
【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】:校正;定义;评定;气体吸附;材料;水银;粒度分布;孔径;孔隙率;孔隙度测量;疏松材料;规程;取样
【英文主题词】:Calibration;Definitions;Evaluation;Gasadsorption;Materials;Mercury;Particlesizedistribution;Poresizes;Porosity;Porositymeasurement;Porousmaterials;Procedures;Sampling
【摘要】:ThispartofISO15901describesamethodfortheevaluationofporosityandporesizedistributionbygasadsorption.Itisacomparative,ratherthananabsolutetest.Themethodislimitedtothedeterminationofthequantityofagasadsorbedperunitmassofsampleatacontrolled,constanttemperature.ThispartofISO15901doesnotspecifytheuseofaparticularadsorptivegas,howevernitrogenistheadsorptivegasmostcommonlyusedinsuchmethods.Similarly,thetemperatureofliquidnitrogenistheanalysistemperaturemostcommonlyused.Useissometimesmadeofotheradsorptivegases,includingargon,carbondioxideandkrypton,andotheranalysistemperatures,includingthoseofliquidargonandsolidcarbondioxide.Inthecaseofnitrogenadsorptionatliquidnitrogentemperature,thebasisofthismethodistomeasurethequantityofnitrogenadsorbedat77Kasafunctionofitsrelativepressure.Traditionally,nitrogenadsorptionismostappropriateforporesintheapproximaterangeofwidths0,4nmto50nm.Improvementsintemperaturecontrolandpressuremeasurementnowallowlargerporewidthstobeevaluated.ThispartofISO15901describesthecalculationofmesoporesizedistributionbetween2nmand50nm,andofmacroporedistributionupto100nm.ThemethoddescribedinthispartofISO15901issuitableforawiderangeofporousmaterials,eventhoughtheporestructureofcertainmaterialsissometimesmodifiedbypretreatmentorcooling.Twogroupsofproceduresarespecifiedtodeterminetheamountofgasadsorbed:--thosewhichdependonthemeasurementoftheamountofgasremovedfromthegasphase(i.e.gasvolumetricmethods),and--thosewhichinvolvethemeasurementoftheuptakeofthegasbytheadsorbent(i.e.directdeterminationofincreaseinmassbygravimetricmethods).Inpractice,staticordynamictechniquescanbeusedtodeterminetheamountofgasadsorbed.Toderiveporesizedistributionfromtheisotherm,itisnecessarytoapplyoneormoremathematicalmodels,whichentailssimplifyingcertainbasicassumptions.
【中国标准分类号】:A42
【国际标准分类号】:19_120
【页数】:40P;A4
【正文语种】:英语