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【英文标准名称】:Aerospaceseries;aluminiumalloyAL-P7075-T73511;drawnbars6mmaorD75mm;GermanversionEN2128:1992
【原文标准名称】:航空航天.AL-P7075-T73511铝合金.6mm≤a或D≤75mm拉制棒材
【标准号】:DINEN2128-1993
【标准状态】:现行
【国别】:德国
【发布日期】:1993-12
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:拉拔;竿材;飞行器;航天运输;航空航天运输;交货条件;铝合金;化学成份;尺寸;材料;航空运输;规范(认可)
【英文主题词】:Aerospacetransport;Airtransport;Aircraft;Aluminium;Aluminiumalloys;Chemicalcomposition;Deliveryconditions;Dimensions;Drawn;Materials;Poles;Properties;Sheetmaterials;Spacetransport;Specification(approval)
【摘要】:
【中国标准分类号】:V11
【国际标准分类号】:49_025_20
【页数】:8P.;A4
【正文语种】:德语


【英文标准名称】:Determinationoftheultimateaerobicbiodegradabilityofplasticmaterialsinanaqueousmedium-Methodbymeasuringtheoxygendemandinaclosedrespirometer
【原文标准名称】:水生介质中塑料材料极端好气菌生物降解性的测定.在一封闭呼吸器中测定氧需求的方法
【标准号】:BSISO14851-1999
【标准状态】:作废
【国别】:英国
【发布日期】:1999-08-15
【实施或试行日期】:1999-08-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:有机化合物;质量;生物降解能力;试验;好气菌;塑料;微生物;需氧量;定义;测定
【英文主题词】:biodegradability;definitions;testing;microorganisms;organiccompounds;plastics;oxygendemand;quality;aerobicbacteria;determination
【摘要】:ThisInternationalStandardspecifiesamethod,bymeasuringtheoxygendemandinaclosedrespirometer,forthedeterminationofthedegreeofaerobicbiodegradabilityofplasticmaterials,includingthosecontainingformulationadditives.Thetestmaterialisexposedinanaqueousmediumunderlaboratoryconditionstoaninoculumfromactivatedsludge,compostorsoil.Ifanunadaptedactivatedsludgeisusedastheinoculum,thetestsimulatesthebiodegradationprocesseswhichoccurinanaturalaqueousenvironment;ifamixedorpre-exposedinoculumisused,themethodcanbeusedtoinvestigatethepotentialbiodegradabilityofatestmaterial.TheconditionsusedinthisInternationalStandarddonotnecessarilycorrespondtotheoptimumconditionsallowingmaximumbiodegradationtooccur,butthestandardisdesignedtodeterminethepotentialbiodegradabilityofplasticmaterialsorgiveanindicationoftheirbiodegradabilityinnaturalenvironments.Themethodenablestheassessmentofthebiodegradabilitytobeimprovedbycalculatingacarbonbalance(optional,seeannexE).Themethodappliestothefollowingmaterials:—Naturaland/orsyntheticpolymers,copolymersormixturesthereof.—Plasticmaterialswhichcontainadditivessuchasplasticizers,colorantsorothercompounds.—Water-solublepolymers.—Materialswhich,underthetestconditions,donotinhibitthemicroorganismspresentintheinoculum.Inhibitoryeffectscanbedeterminedusinganinhibitioncontrolorbyanotherappropriatemethod(seee.g.ISO8192).Ifthetestmaterialisinhibitorytotheinoculum,alowertestconcentration,anotherinoculumorapre-exposedinoculumcanbeused.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:30P.;A4
【正文语种】:英语