JB/GQ.T 1149-1989 机床用38 Cr Mo Ai 钢验收技术条件及调质后金相检验
时间:2024-05-20 12:53:33 来源: 标准资料网 作者：标准资料网 阅读：9353
基本信息
| 标准名称： | 机床用38 Cr Mo Ai 钢验收技术条件及调质后金相检验 |
| 中标分类： |
机械 >>
金属切削机床 >>
机床综合 |
| 发布日期： | |
| 实施日期： | 1990-05-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 4页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 机械 金属切削机床 机床综合
【英文标准名称】:StandardPracticeforAlternateActinideCalibrationforInductivelyCoupledPlasma-MassSpectrometry
【原文标准名称】:感应耦合等离子体质谱法的交替锕系校正的标准规程
【标准号】:ASTMC1590-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:C26.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:锕系;感应;等离子体;校正;质谱学;耦合
【英文主题词】:actinides;inductivelycoupledplasma-massspectrometry(ICP-MS);massbias;thorium;uranium
【摘要】:Oneofthebenefitsofthisstandardpracticeistheabilitytocalibratefortheanalysisofhighlyradioactiveactinidesusingcalibrationstandardsatmuchlowerspecificactivities(thatis,232Thand238U).Environmentallaboratoriesmayfindthisstandardpracticeusefuliffacilitiesarenotavailabletohandlethehighlyradioactivestandardsoftheindividualactinidesofinterest.Thedegreeofactualmassbiasisvariableandisdependentuponinstrumenttuneparameters.Thisstandardpracticeusesuniversalinterferenceequationstoderiveamassbiascorrectionthatisspecifictotheinstrumentparametersandtuneusedforsampledataacquisitionandnotbasedonahistoricalaverage.Massbiascorrectionusestheinstrumentsoftwareinterferenceequationsanddoesnotrequireadditionalsubsequentoff-linecalculations.Themethodologythatthisstandardpracticeisbasedonhasbeenusedforthedeterminationof232Thand237Npinenricheduraniumsolutionsandthedeterminationof241Aminplutoniumanduraniumlegacyoxidesfollowingdissolutionandionextractionchromatographyseparation.1.1ThisstandardpracticeprovidesguidanceforanalternatelinearcalibrationforthedeterminationofselectedactinideisotopesinappropriatelypreparedaqueoussolutionsbyInductivelyCoupledPlasma-MassSpectrometry(ICP-MS).Thisalternatecalibrationismassbiasadjustedusingthorium-232(232Th)anduranium-238(238U)standards.Oneofthebenefitsofthisstandardpracticeistheabilitytocalibratefortheanalysisofhighlyradioactiveactinidesusingcalibrationstandardsatmuchlowerspecificactivities.Environmentallaboratoriesmayfindthisstandardpracticeusefuliffacilitiesarenotavailabletohandlethehighlyradioactivestandardsoftheindividualactinidesofinterest.1.2Theinstrumentresponseforaseriesofdeterminationsofknownconcentrationof232Thand238Udefinesthemassversusresponserelationship.Foreachstandardconcentration,theslopeofthelinedefinedby232Thand238Uisusedtoderivelinearcalibrationcurvesforeachmassofinterestusinginterferenceequations.Themassbiascorrectedcalibrationcurves,althoughgeneratedfrominterferenceequations,arespecifictotheinstrumentoperatingparametersandtuningineffectatthetimeofdataacquisition.BecauseinterferenceequationsarepartofthenormalICP-MSmanufacturer'ssoftwarepackage,thiscalibrationmethodologyiswidelyapplicable.1.3Forthisstandardpractice,theactinideatomicmassrangethathasbeenstudiedisfromamu232-244.Guidanceforanextendedrangeofamu228-248isgiveninthispractice.1.4Usingthispractice,analyteconcentrationsarereportedateachamuandnotbyelementtotal(thatis,239Puversusplutonium).1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A43
【国际标准分类号】:71_040_50
【页数】:6P.;A4
【正文语种】:
【英文标准名称】:SpecificationsforBandSawBlades(MetalCutting)
【原文标准名称】:带锯条规范(金属切割)
【标准号】:ANSI/ASMEB94.51M-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:锯床;带锯;规范(验收)
【英文主题词】:bandsaws;sawingmachines;specification(approval)
【摘要】:
【中国标准分类号】:J41
【国际标准分类号】:25_100_40
【页数】:
【正文语种】:英语