【英文标准名称】:Highfrequencyinductivecomponents-Non-electricalcharacteristicsandmeasuringmethods-Part1:Fixed,surfacemountedinductorforuseinelectronicandtelecommunicationequipment(IEC62025-1:2007);GermanversionEN62025-1:2007
【原文标准名称】:高频感应部件.非电气特征和测量方法.第1部分:电子和电信设备用固定式表面安装感应器
【标准号】:EN62025-1-2007
【标准状态】:现行
【国别】:
【发布日期】:2008-02
【实施或试行日期】:2008-02-01
【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】:元部件;名称与符号;尺寸;电气工程;电子工程;电子设备及元件;电子仪器;图形符号;高频;阻抗;电感;感应;信息技术;电磁元件;磁性器件;作标记;数学计算;测量;测量技术;计量学;额定值;共振频率;形状;表面安装设备;表面安装;表面安装装置;电信;测试
【英文主题词】:Components;Designations;Dimensions;Electricalengineering;Electronicengineering;Electronicequipmentandcomponents;Electronicinstruments;Graphicsymbols;Highfrequencies;Impedance;Inductance;Inductive;Informationtechnology;Magneticcomponents;Magneticdevices;Marking;Mathematicalcalculations;Measurement;Measuringtechniques;Metrology;Ratings;Resonantfrequency;Shape;SMD;Surfacemounting;Surfacemountingdevices;Telecommunications;Testing
【摘要】:
【中国标准分类号】:L86
【国际标准分类号】:17_220_20;29_100_10
【页数】:14P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforDeterminingAnaerobicBiodegradationofPlasticMaterialsUnderAcceleratedLandfillConditions
【原文标准名称】:加速土地填筑条件下塑料材料的厌氧生物降解测定的标准试验方法
【标准号】:ASTMD5526-1994(2002)
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:D20.96
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:降解;条件;浸出;生物降解;厌氧生物降解;试验;加速土地填筑;曝光试验;塑料;处理;分解;分解
【英文主题词】:acceleratedlandfill;anaerobicbiodegradation;biodegradation;drydigestion;ecotoxicity;landfill;metabolites;plastics;testmethod
【摘要】:Decompositionofaplasticwithinalandfillinvolvesbiologicalprocessesthatwillaffectthedecompositionofothermaterialsenclosedby,orincloseproximityto,theplastic.Rapiddegradationoftheplasticmayincreasetheeconomicfeasibilityoflandfill-gasrecovery,minimizethedurationofafter-careofthelandfill,andmakepossibletherecoveryofthevolumereductionofthewasteduetobiodegradationduringtheactivelifeofthelandfill.Thisprocedurehasbeendevelopedtopermitdeterminationoftheanaerobicbiodegradabilityofplasticproductswhenplacedinbiologicallyactiveenvironmentssimulatinglandfillconditions.Thedecompositionofplasticmaterialsinalandfillisoflimitedimportance,asfewlandfillsareoperatedsoastobebiologicallyactive.However,asdegradationoccursinevitablyinalandfill,itisofimmediateconcernthattheplasticmaterialsdonotproducetoxicmetabolitesorendproductsunderthevariousconditionsthatmayoccurinalandfill.Themixturesremainingaftercompletionofthetestmethod,containingfullyorpartiallydegradedplasticmaterialsorextracts,canbesubmittedsubsequentlytoecotoxicitytestinginordertoassesstheenvironmentalhazardsposedbythebreakdownofplasticstovaryingdegreesinlandfills.Thistestmethodhasbeendesignedtoassessbiodegradationunderoptimumandless-than-optimumconditions.Limitations8212;Becauseawidevariationexistsintheconstructionandoperationoflandfills,andbecauseregulatoryrequirementsforlandfillsvarygreatly,thisprocedureisnotintendedtosimulatetheenvironmentofalllandfills.However,itisexpectedtocloselyresembletheenvironmentofabiologicallyactivelandfill.Morespecifically,theprocedureisintendedtocreateastandardlaboratoryenvironmentthatpermitsrapidandreproducibledeterminationoftheanaerobicbiodegradabilityunderacceleratedlandfillconditions,whileatthesametimeproducingreproduciblemixturesoffullyandpartiallydecomposedhouseholdwastewithplasticmaterialsforecotoxicologicalassessment.1.1Thistestmethodcoversdeterminationofthedegreeandrateofanaerobicbiodegradationofplasticmaterialsinanaccelerated-landfilltestenvironment.Thistestmethodisalsodesignedtoproducemixturesofhouseholdwasteandplasticmaterialsafterdifferentdegreesofdecompositionunderconditionsthatresemblelandfillconditions.Thetestmaterialsaremixedwithpretreatedhouseholdwasteandexposedtoamethanogenicinoculumderivedfromanaerobicdigestersoperatingonlyonpretreatedhouseholdwaste.Theanaerobicdecompositionoccursunderdry(morethan30%totalsolids)andstaticnonmixedconditions.Themixturesobtainedafterthistestmethodcanbeusedtoassesstheenvironmentalandhealthrisksofplasticmaterialsthataredegradedinalandfill.1.2Thistestmethodisdesignedtoyieldapercentageofconversionofcarboninthesampletocarboninthegaseousformunderconditionsthatresemblelandfillconditions.Thistestmethodmaynotsimulateallconditionsfoundinlandfills,especiallybiologicallyinactivelandfills.Thistestmethodmorecloselyresemblesthosetypesoflandfillsinwhichthegasgeneratedisrecoveredorevenactivelypromoted,orboth,forexample,byinoculation(codepositionofanaerobicsewagesludgeandanaerobicleachaterecirculation),moisturecontrolinthelandfill(leachaterecirculation),andtemperaturecontrol(short-terminjectionofoxygenandheatingofrecirculatedleachate)(1-7).1.3Thistestmethodisdesignedtoproducepartiallydegradedmixturesofmunicipalsolidwasteandplasticsthatcanbeusedtoassesstheecotoxicologicalrisksassociatedwiththeanaerobicdegradationofplasticsaftervariousstagesofanaer......
【中国标准分类号】:Q31
【国际标准分类号】:13_030_40
【页数】:5P.;A4
【正文语种】: