DIN 51924-1984 炭素材料试验.并三苯油中不溶解物质含量的测定.粘接材料和浸渍材料
作者:标准资料网 时间:2024-05-03 05:59:47 浏览:8217
来源:标准资料网
【英文标准名称】:Testingofcarbonmaterials;determinationofthecontentofmatterinsolubleinanthraceneoil;bindingandimpregnatingmaterials
【原文标准名称】:炭素材料试验.并三苯油中不溶解物质含量的测定.粘接材料和浸渍材料
【标准号】:DIN51924-1984
【标准状态】:作废
【国别】:德国
【发布日期】:1984-04
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;定义;粘合剂;非溶物质测定;含量测定;浸渍材料;焦油;蒽油;硬沥青(石油产品);碳素材料
【英文主题词】:insolublematterdetermination;carbonmaterials;testing;anthraceneoil;definitions;tars;bindingagents;determinationofcontent;pitch(petroleumproduct);impregnatingmaterials
【摘要】:
【中国标准分类号】:Q50
【国际标准分类号】:5603
【页数】:3P;A4
【正文语种】:德语
【英文标准名称】:PrivateIntegratedServicesNetwork(PISN)-Specification,functionalmodelsandinformationflows-Recallsupplementaryservice(ISO/IEC15051(2003),modified)(EndorsementoftheEnglishversionEN301257V1.2.1(2004-01)asGermanstandard)
【原文标准名称】:专用综合业务网.规范、功能模型和信息流.重叫补充业务
【标准号】:DINEN301257-2004
【标准状态】:现行
【国别】:德国
【发布日期】:2004-12
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:功能描述;综合业务数字网;信号传输;远程通信;通信网;电力网供电;补充业务;专业网;电信设备;专用综合业务网;电气工程;呼叫传输;信息交换;信息流;电信;定义;规范(验收);规范
【英文主题词】:
【摘要】:ThisEuropeanstandardspecifiesrequirementsinthetelecommunicationssector.
【中国标准分类号】:M11
【国际标准分类号】:33_040_35
【页数】:2P;A4
【正文语种】:德语
【英文标准名称】:StandardPracticeforDosimetryinanElectronBeamFacilityforRadiationProcessingatEnergiesBetween300keVand25MeV
【原文标准名称】:在300KeV和25MeV能量之间进行辐射加工用电子束设备中剂量测定的标准实施规程
【标准号】:ASTMISO/ASTM51649-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:E10.01
【标准类型】:(ISO/ASTM)
【标准水平】:()
【中文主题词】:
【英文主题词】:absorbeddose;dosemapping;dosimeter;dosimetrysystem;electronbeam;ionizingradiation;irradiation;irradiatorcharacterization;radiation;radiationprocessing;ICS
【摘要】:4.1Variousproductsandmaterialsareroutinelyirradiatedatpre-determineddosesatelectronbeamfacilitiestopreserveormodifytheircharacteristics.Dosimetryrequirementsmayvarydependingontheradiationprocessandenduseoftheproduct.Forexample,apartiallistofprocesseswheredosimetrymaybeusedisgivenbelow.4.1.1Polymerizationofmonomersandgraftingofmonomersontopolymers,4.1.2Cross-linkingordegradationofpolymers,4.1.3Curingofcompositematerials,4.1.4Sterilizationofmedicaldevices,4.1.5Disinfectionofconsumerproducts,4.1.6Foodirradiation(parasiteandpathogencontrol,insectdisinfestation,andshelf-lifeextension),4.1.7Controlofpathogensandtoxinsindrinkingwater,4.1.8Controlofpathogensandtoxinsinliquidorsolidwaste4.1.9Modificationofcharacteristicsofsemiconductordevices,4.1.10Colorenhancementofgemstonesandothermaterials,4.1.11Researchonradiationeffectsonmaterials.NOTE2-Dosimetryisrequiredforregulatedradiationprocessessuchassterilizationofmedicaldevices(seeISO11137andRefs(1-4)5andpreservationoffood(seeISO/ASTM51431andRef(5).Itmaybelessimportantforotherprocesses,suchaspolymermodification,whichmaybeevaluatedbychangesinthephysicalandchemicalpropertiesoftheirradiatedmaterials.Nevertheless,routinedosimetrymaybeusedtomonitorthereproducibilityofthetreatmentprocess.4.2Dosimetersareusedasameansofmonitoringtheradiationprocess.NOTE3-Measureddoseisoftencharacterizedasabsorbeddoseinwatertohaveatraceablestandardreference.Moreover,materialscommonlyfoundindisposablemedicaldevicesandfoodareapproximatelyequivalenttowaterintheabsorptionofionizingradiation.AbsorbeddoseinmaterialsotherthanwatermaybedeterminedbyapplyingconversionfactorsinaccordancewithISO/ASTMGuide51261.4.3Abeneficialirradiationprocessisusuallyspecifiedbyaminimumabsorbeddosetoachievethedesiredeffectandamaximumdoselimitthattheproductcantolerateandstillbefunctional.Dosimetryisessential,sinceitisusedtodeterminetheselimits,anddosimetryisessentialintheevaluationandmonitoringoftheradiationprocess.4.4Thedosedistributionwithintheproductdependsonprocessloadcharacteristics,irradiationconditions,andoperatingparameters.Theoperatingparametersconsistofbeamcharacteristics(suchaselectronenergyandbeamcurrent),beamdispersionparameters,andproductmaterialhandling.Thesecriticalparametersmustbecontrolledtoobtainreproducibleresults.4.5Beforearadiationfacilityisused,itmustbequalifiedtodemonstrateitsabilitytodeliverspecified,controllabledosesinareproduciblemanner.Thisinvolvestestingtheprocessequipment,calibratingtheequipmentanddosimetrysystem,andcharacterizingthemagnitude,distributionandreproducibilityofthedoseabsorbedbyareferencematerial.4.6Toensurethatproductsareirradiatedwithreproducibledoses,routineprocesscontrolrequiresdocumentedproducthandlingproceduresbefore,duringandaftertheirradiation,consistentorientationoftheproductsduringirradiation,monitoringofcriticalprocessparameters,routineproductdosimetryanddocumentationoftherequiredactivitiesandfunctions.1.1ThispracticecoversdosimetricprocedurestobefollowedinInstallationQualification,OperationalQualificationandPerformanceQualifications(IQ,OQ,PQ),androutineprocessingatelectronbeamfacilitiestoensurethattheproducthasbeentreatedwithanacceptablerangeofabsorbeddoses.OtherproceduresrelatedtoIQ,OQ,PQ,androutineproductprocessingthatmayinfluenceabsorbeddoseintheproductarealsodiscussed.Note1Forguidanceintheselect......
【中国标准分类号】:
【国际标准分类号】:
【页数】:30P.;A4
【正文语种】:英语
