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ASTM C1233-2009 核材料中当量硼含量测定的标准实施规范

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【英文标准名称】:StandardPracticeforDeterminingEquivalentBoronContentsofNuclearMaterials
【原文标准名称】:核材料中当量硼含量测定的标准实施规范
【标准号】:ASTMC1233-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:C26.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:boron;neutronabsorption;nuclearmaterials;nuclearpoisons;Boroncontent--nuclear-gradematerials;Boronequivalents;EBC(equivalentboroncontents);Neutronabsorbingmaterials;Nuclearapplications/materials;Nuclearpoisons
【摘要】:1.1ThisstandarddetailsarecommendedpracticeforthecalculationoftheEquivalentBoronContent(EBC)fornuclearmaterials.TheEBCisusedtoprovideameasureofthemacroscopicneutronabsorptioncrosssectionofanuclearmaterial.EBCfactorsforthenaturalelementsaredeterminedfromtheiratomictheirmassesandthermalneutronabsorptioncrosssections.ThispracticeisillustratedbyusingEBCfactorsthatarebasedonthermalneutron(2200m/s)absorptioncrosssections.OtherEBCfactorsmaybeuseddependingupontheactualneutronenergyspectrum.1.2TheEBCisacharacteristicofahomogeneousmaterial.Characterizationofinhomogeneousmaterialsandcalculationofneutronmultiplicationfactorsrequiretechniquesthatarebeyondthescopeofthispractice.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:3P.;A4
【正文语种】:英语


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【英文标准名称】:StandardTestMethodforDensity(UnitWeight),Yield,andAirContent(Gravimetric)ofConcrete
【原文标准名称】:混凝土的密度(单位重量),产量以及含气量测定的标准试验方法
【标准号】:ASTMC138/C138M-2010b
【标准状态】:现行
【国别】:
【发布日期】:2010
【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】:C09.60
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:空气含量;水泥含量;混凝土;相对产量;单位重量;(烧结)收得率;单位重;水泥含量(混凝土)
【英文主题词】:aircontent;cementcontent;concrete;relativeyield;unitweight;yield;Unitweight;Cementcontent(ofconcrete)
【摘要】:1.1Thistestmethodcoversdeterminationofthedensity(seeNote1)offreshlymixedconcreteandgivesformulasforcalculatingtheyield,cementcontent,andaircontentoftheconcrete.Yieldisdefinedasthevolumeofconcreteproducedfromamixtureofknownquantitiesofthecomponentmaterials.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.Note18212;Unitweightwasthepreviousterminologyusedtodescribethepropertydeterminedbythistestmethod,whichismassperunitvolume.1.3Thetextofthistestmethodreferencesnotesandfootnotesthatprovideexplanatoryinformation.Thesenotesandfootnotes(excludingthoseintables)shallnotbeconsideredasrequirementsofthistestmethod.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(WARNINGFreshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.)
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:4P.;A4
【正文语种】:


【英文标准名称】:Electromagneticcompatibility(EMC)-Part4-17:Testingandmeasuringtechniques-Rippleond.c.inputpowerportimmunitytest
【原文标准名称】:电磁兼容性(EMC).第4-17部分:试验和测量技术.直流电输入功率端口纹波抗扰度试验
【标准号】:IEC61000-4-17Edition1.2-2009
【标准状态】:现行
【国别】:国际
【发布日期】:2009-01
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC77A
【标准类型】:()
【标准水平】:()
【中文主题词】:交流电压;定义;锐度;直流电流;直流系统;电器;(电网)电源;电气工程;电磁兼容性;电磁试验;电子仪器;EMC;抗扰度;影响量;输入功率;干扰抑制;干扰;实验室试验;测量;测量技术;整流器;波纹;轴;试验报告;试验组织;试验;试验发生器;电压
【英文主题词】:Alternatingvoltages;Definition;Definitions;Degreeofsharpness;Directcurrent;Direct-currentsystem;Electricappliances;Electricmains;Electricalappliances;Electricalengineering;Electromagneticcompatibility;Electromagnetictests;Electronicinstruments;EMC;Immunity;Influencequantities;Inputpower;Interferencerejections;Interferences;Laboratorytesting;Measurement;Measuringtechniques;Rectifiers;Ripple;Shafts;Testreports;Testset-ups;Testing;Testinggenerators;Voltage
【摘要】:
【中国标准分类号】:L06
【国际标准分类号】:33_100_20
【页数】:29P;A4
【正文语种】:英语