ASTM D 4637-2008 单层屋顶膜中使用的乙丙三元橡胶(EPDM)薄板的标准规范
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来源:标准资料网
【英文标准名称】:StandardSpecificationforEPDMSheetUsedInSingle-PlyRoofMembrane
【原文标准名称】:单层屋顶膜中使用的乙丙三元橡胶(EPDM)薄板的标准规范
【标准号】:ASTMD4637-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:建筑;施工材料;屋顶层;屋面油毡;屋顶;橡胶;橡胶覆盖;防水材料
【英文主题词】:Construction;Constructionmaterials;Roofcoverings;Roofingfelts;Roofs;Rubber;Rubbersheathing;Waterproofingmaterials
【摘要】:
【中国标准分类号】:
【国际标准分类号】:83_060;91_100_50
【页数】:4P;A4
【正文语种】:英语
【英文标准名称】:Statisticalaspectsofsamplingfrombulkmaterials-Samplingofparticulatematerials
【原文标准名称】:从散装物料中抽样的统计方法.颗粒状物料的抽样
【标准号】:BSISO11648-2-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-12-05
【实施或试行日期】:2001-12-05
【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】:动态试验;粒状材料;抽样方法;统计学;统计方法分析;散装物料
【英文主题词】:Bulkgoods;Bulkmaterials;Definition;Definitions;Materialbehaviour;Premixedmaterials;Samples;Sampling;Samplingmethods;Specimenpreparation;Statisticalmethodsofanalysis;Statistics;Testspecimens
【摘要】:ThispartofISO11648establishesthebasicmethodsforsamplingparticipatematerialsinbulk(e.g.ores,mineralconcentrates,coal,industrialchemicalsinpowderorgranularform,andagriculturalproductssuchasgrain)frommovingstreamsandstationarysituations,includingstopped-beltsampling,toprovidesamplesformeasuringoneormorevariablesinanunbiasedmannerandwithaknowndegreeofprecision.Thevariablesaremeasuredbychemicalanalysisand/orphysicaltesting.Thesesamplingmethodsareapplicabletomaterialsthatrequireinspectiontoverifycompliancewithproductspecificationsorcontractsettlements,tocalculatethevalueofthelotmeanofameasurablequantityasabasisforsettlementbetweentradingpartners,ortoestimatethesetofvariablesandvariancesthatdescribesasystemorprocedure.Stopped-beltsamplingisthereferencemethodagainstwhichothersamplingproceduresarecompared.Dynamicsamplingfrommovingstreamsisthepreferredmethodwherebyasamplingdevice(calledacutter)ispassedthroughthestreamoftheparticulatematerial.Acompletecross-sectionofthemovingstreamcanberemovedasaprimaryincrementataconveyorbelttransferpointwithafalling-streamcutter,orremovedfromthebeltwithacross-beltcutter.Inbothcases,theselectionandextractionofincrementscanbedescribedbyaone-dimensionaidynamicsamplingmodel.Staticsamplingofbulkmaterialfromstationarysituations,suchasstockpiles,railorroadwagons,theholdsofshipsandbarges,silos,andevencomparativelysmallvolumes,isusedonlywheresamplingfrommovingstreamsisnotpossible.Suchsamplingfromthree-dimensionallotsispronetosystematicerrors,becausesomepartsofthelotusuallyhavereducedornochanceofbeingcollectedforthegrosssample.Thisisinviolationoftherequirementofthethree-dimensionalsamplingmodelthatallpartshaveanequalprobabilityofbeingcollected.TheproceduresdescribedinthispartofISO11648forsamplingfromstationarylotsofbulkparticulatematerialwithimplementssuchasmechanicalaugersmerelyminimizesomeofthesystematicsamplingerrors.Forthesereasons,thispartofISO11648isprimarilyconcernedwithdynamicsamplingfrommovingstreamsorstopped-beltstaticsamplingfromconveyorbeltsandisbasedonasamplingmodelforone-dimensionallots.Nonetheless,proceduresforstaticsamplingfromthree-dimensionallotsareprovidedwherethesesituationscannotbeavoided.ThispartofISO11648isconcernedwiththemethodsofsamplingparticulatematerialsinbulkwiththeobjectiveofobtainingunbiasedmeasurementsofoneormorevariablesofthematerialwithaknowndegreeofprecision.However,itdoesnotprovidemethodsfordecidingwhethertoacceptorrejectabulkmateriallotwithspecifieddegreesofriskofacceptingasub-standardlot,orofrejectingwhatisinfactanacceptablelot.Theselatterproceduresareusuallycalledacceptancesamplingorsamplinginspectionmethods.
【中国标准分类号】:A80
【国际标准分类号】:03_120_30
【页数】:112P.;A4
【正文语种】:英语
【英文标准名称】:Informationtechnology-Securitytechniques-Cryptographictechniquesbasedonellipticcurves-Ellipticcurvegeneration
【原文标准名称】:信息技术.安全技术.基于椭圆曲线的密码技术.椭圆曲线类生成
【标准号】:BSISO/IEC15946-5-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2010-02-28
【实施或试行日期】:2010-02-28
【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】:代码表示;编码;密码;曲线;数据转换;数据处理;数据安全;定义;椭圆;椭圆的;信息技术;安全性;安全性要求
【英文主题词】:Codedrepresentation;Coding;Cryptographic;Curves(geometry);Dataconversion;Dataprocessing;Datasecurity;Definitions;Ellipses;Elliptical;Informationtechnology;Safety;Safetyrequirements
【摘要】:
【中国标准分类号】:A90
【国际标准分类号】:35_040
【页数】:42P;A4
【正文语种】:英语
