【英文标准名称】:StandardTestMethodforRubber-DeterminationofResidualUnsaturationinHydrogenatedNitrileRubber(HNBR)byInfraredSpectrophotometry
【原文标准名称】:橡胶的标准试验方法.加氢丁腈橡胶(HNBR)中残余不饱和的红外分光光度法的标准试验方法
【标准号】:ASTMD5670-1995(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【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】:D11.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:HNBR;hydrogenatednitrilerubber;infraredspectrometry(IR);unsaturation;Chemicalanalysis--rubberchemicals/materials;HNBR(hydrogenatednitrilerubber);Infraredspectrophotometry;Nitrilerubber;Residualunsaturation;Rubber;Unsaturation
【摘要】:Hydrogenatednitrilerubbersareavailableatdifferentlevelsofunsaturationanddifferentacrylonitrilecontent.Highlysaturatedgradesofferoptimumresistancetoaging,suchasexposuretoheat,ozone,andchemicals,andcanbeeffectivelycuredonlywithperoxidesorhighenergyradiation.Partiallyunsaturatedgradescanbecuredbysulfursystemsinadditiontoperoxidesandhighenergyradiation.Thistestmethodprovidesaninfraredtechniquetodeterminetheunsaturationlevelofhydrogenatednitrilerubbersintherawstate.Itcanbeusedforresearchanddevelopment,qualitycontrol,andrefereepurposes.1.1Thistestmethodcoversthepercentageofresidualunsaturation(doublebondsinunhydrogenatedbutadiene)inhydrogenatednitrilerubberandisbasedoninfraredexaminationofrubberfilmscastfromsolution.1.2Thistestmethodisapplicabletoallgradesofhydrogenatednitrilerubberintherawstate.1.3Thistestmethodassumesthatspecimensandinfraredspectraarepreparedandanalyzedbyexperiencedpersonnelandthattheequipmentisoperatedaccordingtothemanufacturer''sdirectionforoptimumperformance.Nodetailsforoperationofinfraredspectrophotometersareincludedinthistestmethod.1.4Sinceitiscustomaryininfraredspectrophotometrytousewavenumbers(cmx2212;1)ratherthanHertz(Hz),theunitforfrequencyintheSIsystem,theformerisemployedthroughoutthistestmethod.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:5P.;A4
【正文语种】:英语


【英文标准名称】:Informationtechnology-Systemsdesign-Softwaredesigndescriptions
【原文标准名称】:信息技术.系统设计.软件设计描述
【标准号】:IEEE1016-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009-03-19
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(US-IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:计算机软件;数据处理;设计;制定;信息处理;信息技术;寿命周期;编制程序;软件;软件文献工作;股东;系统开发
【英文主题词】:Computersoftware;Dataprocessing;Design;Developments;Informationprocessing;Informationtechnology;Lifecycles;Programming;Software;Softwaredocumentation;Stakeholder;Systemdevelopment
【摘要】:Thisstandarddescribessoftwaredesignsandestablishestheinformationcontentandorganizationofasoftwaredesigndescription(SDD).AnSDDisarepresentationofasoftwaredesigntobeusedforrecordingdesigninformationandcommunicatingthatdesigninformationtokeydesignstakeholders.ThisstandardisintendedforuseindesignsituationsinwhichanexplicitSDDistobeprepared.Thesesituationsincludetraditionalsoftwareconstructionactivities,whendesignleadstocode,and“reverseengineering”situationswhenadesigndescriptionisrecoveredfromanexistingimplementation.Thisstandardcanbeappliedtocommercial,scientific,ormilitarysoftwarethatrunsondigitalcomputers.Applicabilityisnotrestrictedbythesize,complexity,orcriticalityofthesoftware.Thisstandardcanbeappliedtothedescriptionofhigh-levelanddetaileddesigns.Thisstandarddoesnotprescribespecificmethodologiesfordesign,configurationmanagement,orqualityassurance.Thisstandarddoesnotrequiretheuseofanyparticulardesignlanguages,butestablishesrequirementsontheselectionofdesignlanguagesforuseinanSDD.ThisstandardcanbeappliedtothepreparationofSDDscapturedaspaperdocuments,automateddatabases,softwaredevelopmenttools,orothermedia.ThisstandardspecifiesrequirementsontheinformationcontentandorganizationofSDDs.ThestandardspecifiesrequirementsfortheselectionofdesignlanguagestobeusedforSDD,andrequirementsfordocumentingdesignviewpointstobeusedinorganizinganSDD.
【中国标准分类号】:L77
【国际标准分类号】:35_080
【页数】:40P.;A4
【正文语种】:英语