ISO 2705-1973 道路车辆.平底座的M12×1.25火花塞和在汽缸盖上的座孔
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【英文标准名称】:Roadvehicles;SparkplugsM12x1,25withflatseatingandtheircylinderheadhousing
【原文标准名称】:道路车辆.平底座的M12×1.25火花塞和在汽缸盖上的座孔
【标准号】:ISO2705-1973
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【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】:
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【英文标准名称】:StandardPracticeforMountingActinidesforAlphaSpectrometryUsingNeodymiumFluoride
【原文标准名称】:测定使用氟化钕α光谱法用的锕系素的试验方法
【标准号】:ASTMC1163-2008
【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】:C26.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:Actinides;Alpha-emittingactinides;Alphaspectrometry;Hydrochloricacid(HCL);Neodymiumfluoride
【摘要】:Thedeterminationofactinidesbyalphaspectrometryisanessentialfunctionofmanyenvironmentalprograms.Alphaspectrometryallowstheidentificationandquantificationofmostalpha-emittingactinides.Althoughnumerousseparationmethodsareused,thefinalsamplepreparationtechniquehashistoricallybeenbyelectrodeposition.However,electrodepositionmayhavesomedrawbacks,suchastimerequired,incompatibilitywithpriorchemistry,thickdeposits,andlowrecoveries.Theseproblemsmaybeminimizedusingtheneodymiumfluoridemethod.Thesamplemountingtechniquedescribedinthispracticeisrapid,addsanadditionalpurificationstep,sinceonlythoseelementsthatforminsolublefluoridesaremounted,andthesampleandfiltermediacanbedissolvedandremountedifproblemsoccur.Therecoveriesarebetterandresolutionapproachesnormalelectrodepositedsamples.Recoveriesaresufficientlyhighthatforsurveywork,ifquantitativerecoveriesarenotnecessary,tracerscanbeomitted.Drawbackstothistechniqueincludeuseofveryhazardoushydrofluoricacidandthepossibilityofanon-reproducibleandill-definedcountinggeometryfromfiltersthatarenotflat.Also,althoughthetotalturnaroundtimeforcoprecipitationmaybelessthanforelectrodeposition,coprecipitationrequiresmoretimeandattentionfromtheanalyst.1.1Thispracticecoversthepreparationofseparatedfractionsofactinidesforalphaspectrometryasanalternatetoelectrodeposition.Itisapplicabletoanyoftheactinidesthatcanbedissolvedindilutehydrochloricacid.Examplesofapplicablesampleswouldbethefinalelutionfromanionexchangeseparationorthefinalstripfromasolventextractionseparation.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,seeSection9.
【中国标准分类号】:H67
【国际标准分类号】:71_040_50
【页数】:3P.;A4
【正文语种】:英语
【英文标准名称】:Informationtechnology-AbstractSyntaxNotationOne(ASN.1)-Part3:Constraintspecification(THIRDEDITION)
【原文标准名称】:信息技术.抽象语法记法1(ASN.1).第3部分:约束规范(第三版)
【标准号】:ANSI/INCITS/ISO/IEC8824-3-2004
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:ASN.1;代码表示;数据交换;数据处理;定义;例外;信息交换;信息技术;网络互连;标志;开放系统互连;开放系统互连(OSI);表示层;规范
【英文主题词】:ASN.1;Codedrepresentation;Dataexchange;Dataprocessing;Definitions;Exception;Informationinterchange;Informationtechnology;Networkinterconnection;Notation;Opensystemsinterconnection;OSI;Presentationlayers;Specification
【摘要】:ThisRecommendation/InternationalStandardispartofAbstractSyntaxNotationOne(ASN.1)andprovidesnotationforspecifyinguser-definedconstraints,tableconstraints,andcontentsconstraints.
【中国标准分类号】:L70
【国际标准分类号】:35_100_60
【页数】:
【正文语种】:英语
