SAE J389 Universal Symbols for Operator Controls on Agricultural Equipment (Cancelled Jan 1987, Superseded by J1362)

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Product Code:SAE J389
Title:Universal Symbols for Operator Controls on Agricultural Equipment (Cancelled Jan 1987, Superseded by J1362)
Issuing Committee:Hftc2, Machine Displays And Symbols
Scope:
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【英文标准名称】:StandardTestMethodforDeterminingMolecularWeightDistributionandMolecularWeightAveragesofPolyolefinsbyHighTemperatureGelPermeationChromatography
【原文标准名称】:高温凝胶渗透色谱法测定聚烯烃分子量分布和平均分子量的标准试验方法
【标准号】:ASTMD6474-1999(2006)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:平均分子量;分子量分布;尺寸排除色谱法;凝胶渗透色谱法;聚烯烃
【英文主题词】:gelpermeationchromatography;molecularweightaverage;molecularweightdistribution;polyolefin;sizeexclusionchromatography
【摘要】:Thistestmethodmeasuresthemolecularweightdistributionandmolecularweightaveragesofpolyethylene(exceptLDPE)andpolypropyleneresins.Differencesinmolecularweightandmolecularweightdistributionsignificantlyaffectphysicalproperties,suchasmorphology,strength,meltflowetc.,andasaresult,thefinalpropertiesofproductsmadefromtheseresins.1.1Thistestmethodcoversthedeterminationofmolecularweightdistributionsandmolecularweightaveragesoflinearpolyolefinsbyhightemperaturegelpermeationchromatography(GPC).Thistestmethodusescommerciallyavailablepolystyrenestandardsandequipmentandisapplicabletopolyethylenes(excludinghighpressurelowdensitypolyethylene-LDPE)andpolypropylenessolublein1,2,4-trichlorobenzene(TCB)at140C.Thistestmethodisnotabsoluteandrequirescalibration.Note1Sizeexclusionchromatography(SEC)oftenisusedasanalternativenameforgelpermeationchromatography(GPC).Note2Specificmethodsandcapabilitiesofusersmayvarywithdifferencesincolumns,instrumentation,applicationssoftware,andpracticesbetweenlaboratories.Note3Onegeneralmethodisoutlinedherein;alternativeanalyticalpracticescanbefollowedandareattachedinnoteswhereappropriate.Note4ThereisnosimilarorequivalentISOstandard.1.2ThevaluesstatedinSIunits,basedonIEEE/ASTMS1-10,aretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G04
【国际标准分类号】:83_080_20
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Informationtechnology-OpenSystemsInterconnection-Upperlayerssecuritymodel
【原文标准名称】:信息技术开放系统互连高层安全模型
【标准号】:ISO/IEC10745-1995
【标准状态】:现行
【国别】:国际
【发布日期】:1995-08
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:信息交换;通信规程;数据处理;信息技术;安全要求;开放系统互连;数据安全;网络互连
【英文主题词】:Communicationprocedures;Dataprocessing;Datasecurity;Informationinterchange;Informationtechnology;Networkinterconnection;Opensystemsinterconnection;OSI;Safetyrequirements
【摘要】:DefinesamodelforsecurityintheupperlayersofOSIthatprovidesabasisforthedevelopmentofapplication-independentservicesandprotocols,inparticularitspecifiesthesecurityaspectsofcommunicationintheupperlayersofOSI.
【中国标准分类号】:L79
【国际标准分类号】:35_100_01
【页数】:19P.;A4
【正文语种】:英语