【英文标准名称】:Waterquality-Evaluationoftheaerobicbiodegradabilityoforganiccompoundsatlowconcentrations-Part2:Continuousflowrivermodelwithattachedbiomass
【原文标准名称】:水质.评价低浓度时有机化合物有氧生物降解能力.第2部分:附有生物量的连续流动河床模型
【标准号】:ISO14592-2-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-11-15
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC147
【标准类型】:()
【标准水平】:()
【中文主题词】:生物量;好气菌;水质;有机化合物;生物降解能力;水;试验;质量;测定;定义
【英文主题词】:Aerobicbacteria;Biodegradability;Biomass;Definition;Definitions;Determination;Organiccompounds;Quality;Testing;Tests;Water;Waterquality
【摘要】:ThispartofISO14592specifiesamethodforevaluatingthebiodegradabilityoforganictestcompoundsbyaerobicmicroorganismsinnaturalwatersbymeansofacontinuousflowrivermodelwithattachedbiomass.ThispartofISO14592isapplicabletoorganictestcompoundspresentinlowerconcentrationsthanthoseofnaturalcarbonsubstratesalsopresentinthesystem.Undertheseconditions,thetestcompoundsserveasasecondarysubstrateandthekineticsforbiodegradationwouldbeexpectedtobefirstorder("non-growth"kinetics).ThispartofISO14592isapplicabletoorganictestcompounds,whichundertheconditionsofthetestandatthechosentestconcentration,are:—watersoluble;—quantitativelydetectablewithappropriateanalyticalmethodsoravailableinradiolabelledform;—non-volatilefromaqueoussolution(e.g.Henry'slawconstant<1Pa·m/mole);—notsignificantlyadsorbed;—notphotolyzed;—notinhibitorytothemicroorganismsofthetestsystem.Thetestisnotrecommendedforuseasproofofultimatebiodegradability(mineralization)whichisbetterassessedusingotherstandardizedtests(seeISO/TR15462).
【中国标准分类号】:Z16
【国际标准分类号】:13_060_70
【页数】:22P.;A4
【正文语种】:英语


【英文标准名称】:Aerospaceseries.Steelandheatresistingalloys.Wroughtproducts.Technicalspecification.Part002:Barandsection
【原文标准名称】:航空航天系列.钢和耐热合金.锻制产品.技术规范.棒材和型材
【标准号】:BSEN4700-002-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2010-09-30
【实施或试行日期】:2010-09-30
【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】:验收规范;航空航天运输;航空运输;合金;定义;交货条件;尺寸规格;硬度测量;热处理;高温;冲击强度试验;材料;熔化;杆材;剖面图;特性;半成品;航天运输;规范(验收);钢产品;钢;试验;锻制品
【英文主题词】:Acceptancespecification;Aerospacetransport;Airtransport;Alloys;Definitions;Deliveryconditions;Dimensions;Hardnessmeasurement;Heattreatment;Hightemperature;Impactstrengthtest;Materials;Melting;Poles;Profile;Properties;Semi-finishedproducts;Spacetransport;Specification(approval);Steelproducts;Steels;Testing;Wroughtproducts
【摘要】:ThisEuropeanStandarddefinestherequirementsfortheordering,manufacture,testing,inspectionanddeliveryofsteelandheatresistingalloybarandsection.ItshallbeappliedwhenreferredtoandinconjunctionwiththeENmaterialstandardunlessotherwisespecifiedonthedrawing,orderorinspectionschedule.
【中国标准分类号】:V11
【国际标准分类号】:49_025_10
【页数】:36P.;A4
【正文语种】:英语