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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


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【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