EN 13739-2-2011 农业机械.固体肥料撒播机和全幅撒肥机.环境保护.第2部分:试验方法
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【英文标准名称】:Agriculturalmachinery-Solidfertilizerbroadcastersandfullwidthdistributors-Environmentalprotection-Part2:Testmethods;GermanversionEN13739-2:2011
【原文标准名称】:农业机械.固体肥料撒播机和全幅撒肥机.环境保护.第2部分:试验方法
【标准号】:EN13739-2-2011
【标准状态】:现行
【国别】:
【发布日期】:2012-05-01
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Agriculturalmachines;Agriculture;Cantilevers;Checkingequipment;Classification;Definitions;Design;Deviations;Ejector;Environment;Fertilizers;Flowrates;Forestry;Forestryequipment;Forestrymachines;Manurespreaders;Mathematicalcalculations;Mechanicalengineering;Mineralfertilizerdistributor;Pollutioncontrol;Precision;Rotatingmechanism;Specification(approval);Testmethods;Testresults;Testing;Testingconditions;Weights
【摘要】:
【中国标准分类号】:B91
【国际标准分类号】:65_060_25
【页数】:35P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforMeasuringReactionRatesbyAnalysisofBarium-140FromFissionDosimeters
【原文标准名称】:通过分析由裂变剂量计产生的钡140来测定反应速率的试验方法
【标准号】:ASTME393-2008
【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】:E10.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Barium-140;fissiondosimeter;fissionproduct;fissionreactionrates;Barium;Fastneutronflux/fluence;Neutronactivationreactions;Radioactivation--fastneutronflux;Thresholddetectors--1.6MeV;Uranium-238fissionby-products
【摘要】:RefertoGuideE844fortheselection,irradiation,andqualitycontrolofneutrondosimeters.RefertoPracticeE261forageneraldiscussionofthemeasurementofneutronfluencerateandfluence.Theneutronspectrummustbeknowninordertomeasureneutronfluencerateswithasingledetector.Alsoitisnotedthatcrosssectionsarecontinuouslybeingreevaluated.ThelatestrecommendedcrosssectionsanddetailsonhowtheycanbeobtainedarediscussedinGuideE1018.Thereactionrateofadetectornuclideofknowncrosssection,whencombinedwithinformationabouttheneutronspectrum,permitsthedeterminationofthemagnitudeofthefluencerateimpingingonthedetector.Furthermore,ifresultsfromotherdetectorsareavailable,theneutronspectrumcanbedefinedmoreaccurately.ThetechniquesforfluencerateandfluencedeterminationsareexplainedinPracticeE261.140Baisaradioactivenuclideformedasaresultofuraniumfission.Althoughitisformedinfissionofanyheavyatom,therelativeyieldwilldiffer.Recommendedfissionyieldsfor140BaproductionaregiveninTable1.Thedirect(independent)fissionyieldofthedaughterproduct140La,whichiscounted,isgiveninTable2.Theseindependentfissionyieldsarerelativelylowcomparedtothe140Bacumulativefissionyieldandwillnotsignificantlyaffecttheaccuracyofthenondestructiveprocedureandneednotbeconsidered.Thehalf-lifeof140Bais12.752days.Itsdaughter140Lahasahalf-lifeof1.6781days.Thecomparativelylonghalf-lifeof140Baallowsthecountingtobedelayedseveralweeksafterirradiationinahigh-neutronfield.However,toachievemaximumsensitivitythedaughterproduct140Lashouldbecountedfivetosixdaysaftertheirradiationduringnondestructiveanalysisorfivetosixdaysafterchemicalseparationifthelattertechniqueisused.Analternativemethodafterchemicalseparationistocountthe140Badirectly.Becauseofits12.752dayhalf-lifeandsubstantialfissionyield,140Baisusefulforirradiationtimesuptoaboutsixweeksinmoderateintensityfields.Thenumberoffissionsproducedshouldbeapproximately109orgreaterforgoodcountingstatistics.Also,iftheirradiationtimeissubstantiallylongerthansixweeks,theneutronfluenceratedeterminedwillapplymainlytotheneutronfieldexistingduringthelatterpartoftheirradiation.The140Badecayconstantandyieldareknownmoreaccuratelythanthoseofmanyfissionproducts,soitissometimesusedasastandardorbasereactionwithwhichothermeasurementscanbenormalized.1.1Thistestmethoddescribestwoproceduresforthemeasurementofreactionratesbydeterminingtheamountofthefissionproduct140Baproducedbythenon-thresholdreactions235U(n,f),241Am(n,f),and239Pu(n,f),andbythethresholdreactions238U(n,f),237Np(n,f),and232Th(n,f).1.2Thesereactionsproducemanyfissionproducts,amongwhichis140Ba,havingahalf-lifeof12.752days.140Baemitsgammaraysofseveralenergies;however,thesearenoteasilydetectedinthepresenceofotherfissionproducts.Competingactivityfromotherfissionproductsrequiresthatachemicalseparationbeemployedorthatthe140Baactivitybedeterminedindirectlybycountingitsdaughterproduct140La.Thistestmethoddescribesbothprocedure(a),thenondestructivedeterminationof140Babythedirectcountingof140Laseveraldaysafterirradiation,andpro......
【中国标准分类号】:F46
【国际标准分类号】:17_240
【页数】:5P.;A4
【正文语种】:英语
基本信息
标准名称: | 皮革 化学试验 含氮量和“皮质”的测定:滴定法 |
英文名称: | Leather -- chemical test -- Determination of nitrogen content and hide substance -- Titrimetric method |
中标分类: |
轻工、文化与生活用品 >>
皮革加工与制品 >>
皮革加工与制品综合 |
ICS分类: |
纺织和皮革技术 >>
皮革技术
|
替代情况: | QB/T 3812.17-1999(原标准号GB 4689.17-1984) |
发布部门: | 中华人民共和国国家发展和改革委员会 |
发布日期: | 2005-03-19 |
实施日期: | 2005-09-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
提出单位: | 中国轻工业联合会 |
归口单位: | 全国皮革工业标准化技术委员会 |
起草单位: | 中国皮革和制鞋工业研究院 |
起草人: | 赵立国 |
出版社: | 中国轻工业出版社 |
出版日期: | 2005-09-01 |
页数: | 5页 |
书号: | 155019.2770 |
适用范围
本标准规定了皮革中含氮量和“皮质”的测定方法-滴定法。本标准适用于各种类型的皮革。
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所属分类: 轻工 文化与生活用品 皮革加工与制品 皮革加工与制品综合 纺织和皮革技术 皮革技术