DIN EN 13804-2002 食品.痕量元素测定.实施准则、一般考虑和样品制备
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【英文标准名称】:Foodstuffs-Determinationoftraceelements-Performancecriteria,generalconsiderationsandsamplepreparation;GermanversionEN13804:2002
【原文标准名称】:食品.痕量元素测定.实施准则、一般考虑和样品制备
【标准号】:DINEN13804-2002
【标准状态】:现行
【国别】:德国
【发布日期】:2002-09
【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】:食品;调查;实验室;定义;分析方法;含量;抽样方法;试验报告;痕量元素;试验;化学分析和试验;痕量元素分析;食品添加剂;试样;残留物;规范(验收);分析;含量测定;食品检验;食品检验;试样制备;重金属;添加剂
【英文主题词】:
【摘要】:ThisEuropeanStandardspecifiesperformancecriteriafortheselectionofmethodsofanalysisoftraceelementsinfoodstuffs.Itprovidesgeneralrequirementsonsamplepreparation,materialsandreagentsforheavymetalsanalysis.InselectingamethodofanalysisforaspecificfoodmatrixtheanalystshouldgivepreferencetoanymethodwhichhasbeendeveloppedbytheappropriateverticalCEN/TCratherthanusingamethodwhichhasbeendevelopedbythehorizontalCEN/TC275/WG10.Howeveritistheresponsibilityoftheanalysttodeterminewhetheranapplicableverticalstandardhasbeenpublished.#,,#
【中国标准分类号】:X04
【国际标准分类号】:67_050
【页数】:15P;A4
【正文语种】:德语
【英文标准名称】:Pre-Project&Pre-TaskSafetyandHealthPlanningforConstructionandDemolitionOperations
【原文标准名称】:建造和拆除工作的前期项目和前期任务的安全和健康规划
【标准号】:ANSI/ASSEA10.1-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Constructionindustry;Constructionoperations;Demolition;Occupationalsafety;Personalhealth;Planning;Publichealth;Safety
【摘要】:Thisstandardestablishestheelementsandactivitiesforpre-projectandpre-tasksafetyandhealthplanninginconstruction.
【中国标准分类号】:P32
【国际标准分类号】:13_100;91_010_01
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforPeelStrength("T"Method)ofHookandLoopTouchFasteners
【原文标准名称】:钩状和环状连接紧固件的坯料剥离强度的标准试验方法(T方法)
【标准号】:ASTMD5170-1998(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【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】:D13.54
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fastener;hookandloop;hook;loop;peel;peelstrength;touchfastener;T-peeltest;Constantrate-of-extension(CRE)test;Fasteners;Hookandlooptouchfasteners;Loopfasteners;Peelstrengthtests;Tensileproperties/testing--textilematerials/app
【摘要】:Thistestmethodgivesameasureofakeypropertyofhookandlooptouchfastenerswhichisofinteresttousersofsuchdevices.Thisisameansofdeterminingtheresistancetoseparationwhenforcesareappliednormaltothelineofseparationofthefastener.Theforceregisteredinapeeltestisirregular,andasaconsequence,empiricalmethodshavehadtobedevelopedtoobtainusablevaluesrelatedtopeelstrength.Inspiteoftheempiricalnatureofthereportedvalues,itisbelievedtheyreflectcomparativeperformanceofsimilartouchfastenerstestedandmeasuredinthesameway.Twooptionalmethodsofcalculationareprovided:integratoraverageandaverageoffivehighestpeaks.Thesetestmethodsarenotequivalent.Generally,theintegratoraveragewillbelowerthantheaverageofthefivehighestpeaks.Thehighestpeakswhichreflecttheforcerequiredtoseparateahookandloopclosurebearnosimplerelationshiptotheaverageforce(integratoraverage).Theaverageofthefivehighestpeaksbetterreflectperformancebuttheintegratorresultsmaybeusedtocharacterizeaclosureandforqualitycontrolpurposes.Theintegratoraverageisrelativelyeasytocalculategiventheproperequipment.Inthecaseofadisputearisingfromdifferencesinreportedtestresultswhenusingthistestmethodforacceptancetestingofcommercialshipments,thepurchaserandthesuppliershouldconductcomparativeteststodetermineifthereisastatisticalbiasbetweentheirlaboratories.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimenswhichareashomogenousaspossibleandwhicharefromalotofhookandloopofthetypeinquestion.Thetestspecimensshouldthenberandomlyassignedinequalnumberstoeachlaboratoryfortesting.TheaverageresultsfromthetwolaboratoriesshouldbecomparedusingStudent''st-testandanacceptableprobabilitylevelchosenbythetwopartiesbeforethetestingbegan.Ifabiasisfound,eitheritscausemustbefoundandcorrectedorthepurchaserandthesuppliermustagreetointerpretfuturetestresultsinthelightoftheknownbias.1.1Thistestmethodcoversthemeasurementofthepeelstrengthofhookandlooptouchfastenersusingarecordingconstant-rate-of-extensiontensiletestingmachine(CRE).1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J13
【国际标准分类号】:61_040
【页数】:3P.;A4
【正文语种】:英语
