【英文标准名称】:Specificationforequipmentforeye,faceandneckprotectionagainstnon-ionizingradiationarisingduringweldingandsimilaroperations
【原文标准名称】:焊接与类似操作时眼、面、颈部的非电离辐射防护设备规范
【标准号】:BS1542-1982
【标准状态】:作废
【国别】:英国
【发布日期】:1982-12-31
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:腐蚀试验;安全措施;燃烧试验;职业安全;电绝缘;防护帽;着火性;光危害;防护服装;热切割;电阻测量;防护屏蔽;护目器;面罩;护目眼镜;辐射屏蔽;工业安全帽;护手;焊接;作标记;焊工防护头盔;安全眼镜;颈脖护套;清洁处理
【英文主题词】:
【摘要】:
【中国标准分类号】:C73
【国际标准分类号】:13_340_20
【页数】:8P;A4
【正文语种】:英语


【英文标准名称】:Sensoryanalysis-Methodology-Pairedcomparisontest(ISO5495:2005andISO5495:2005/Cor1:2006)EnglishversionofDINENISO5495:2007-10
【原文标准名称】:感官分析.方法论.配对比较试验
【标准号】:DINENISO5495-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-10
【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】:空白格式;套管;比较分析法;定义;差值;食品;食品测试;形式;格式(纸);检验师;解释;性能;抽样方法;感官;感官分析;感官分析装置;感官分析(食品);试样制备;试验设备;试验报告;试样;测试;测试条件;测试人员;试验
【英文主题词】:
【摘要】:ThisinternationalStandarddescribesaprocedurefordeteminingwhetherthereexistsaperceptiblesensorydifferenceorsimilaritybetweensamplesoftwoproductsconcerningtheintensityofasensoryattribute.Thistestissometimesalsoreferredtoasadirectionaldifferencetestora2-AFCtest(AlternativeForcedChoice).NOTEThepairedcomparisontestisthesimplestexistingclassificationtestsinceitconcernslnlytwosamples.Themethodisapplicablewhetheradifferenceexistsinasinglesensoryattributeorinseveral,whichmeansthatitenablesdeteminationofwheterthereexistsaperceptibledifferenceconcerningagivenattribure,andthespecificationofthedirectionofdifference,butitdoesnotgiveanyindicationoftheextentofthatdifference.Theabsenceofdifferencefortheattributeunderstudydoesnotsignifythattheredoesnotexistanydifferencebetweenthetwoproducts.Thismethodisonlyapplicableiftheproductsarerelativelyhomogeneous.Themethodiseffectivea)fordetermining-whetheraperceptibledifferenceexists(pairedidfferencetest),or-whethernoperceptibledifferenceexists(pairedsimilaritytest)when,forexample,modificationsaremadetoingredients,processing,packaging,handingorstorageoperation,orb)forselecting,trainingandmonitoringassessors.Itisnecessarytoknow,priortocarryingoutthetest,whetherthetestisaone-sidedtest(thetestsupervisorknowsapriorithedirectionofthedifference,andthealternativehypothesiscorrespondstotheexistenceofadifferenceintheexpecteddirection)oratwo-sidedtestsupervisordoesnothaveanyaprioriknowledgeconcerningthedirectionofthedefference,andthealternaticehypothesiscorrespindstotheexistenceofadifferenceinonedirectonortheother).Thepairedtestcanalsobeusedinordertocomparetwoproductsintermsofpreference.ThedifferentcasesofuseofthepairedtestaresummarizedinFigure1.
【中国标准分类号】:X04
【国际标准分类号】:67_240
【页数】:27P.;A4
【正文语种】:英语