BS 3762-3.23-1990 配制洗涤剂的分析.定量试验方法.螯合剂含量的测定方法
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来源:标准资料网
【英文标准名称】:Analysisofformulateddetergents-Quantitativetestmethods-Methodfordeterminationofchelatingagentscontent
【原文标准名称】:配制洗涤剂的分析.定量试验方法.螯合剂含量的测定方法
【标准号】:BS3762-3.23-1990
【标准状态】:现行
【国别】:英国
【发布日期】:1990-08-31
【实施或试行日期】:1990-08-31
【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】:肥皂;EDTA;表面活性剂;容量分析;含量测定;洗涤剂;化学分析和试验
【英文主题词】:Chemicalanalysisandtesting;Detergents;Determinationofcontent;EDTA;Soaps;Surfactants;Volumetricanalysis
【摘要】:Titrimetricmethodusing1-(2-pyridylazo)-2-naphthol(PAN)asindicator.TobereadinconjunctionwithBS3762-0
【中国标准分类号】:Y43
【国际标准分类号】:71_100_40
【页数】:6P;A4
【正文语种】:英语
【英文标准名称】:Shipbuilding-Ventilationandair-treatmentofgalleysandpantrieswithcookingappliances
【原文标准名称】:造船.带厨具的厨房和配膳室的通风和空气处理设备
【标准号】:ISO9943-2009
【标准状态】:现行
【国别】:国际
【发布日期】:2009-05
【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/TC8
【标准类型】:()
【标准水平】:()
【中文主题词】:空调;空调系统;烹饪设备;烹调区;定义;设计;船上的厨房;厨房;造船;船舶;规范;储藏室;通风
【英文主题词】:Airconditioning;Air-conditioningsystems;Cookingequipment;Cookingzones;Definitions;Design;Galleys;Kitchens;Shipbuilding;Ships;Specifications;Storeroom;Ventilation
【摘要】:
【中国标准分类号】:U25
【国际标准分类号】:47_020_90
【页数】:12P;A4
【正文语种】:英语
【英文标准名称】:StandardGuideforStatisticalAnalysisofAcceleratedServiceLifeData
【原文标准名称】:加速使用寿命数据统计分析的标准指南
【标准号】:ASTMG172-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:G03.08
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:statistical;devloping;life;data;stress;measurement
【摘要】:Thenatureofacceleratedservicelifeestimationnormallyrequiresthatstresseshigherthanthoseexperiencedduringserviceconditionsareappliedtothematerialbeingevaluated.Fornon-constantusestress,suchasexperiencedbytimevaryingweatheroutdoors,itmayinfactbeusefultochooseanacceleratedstressfixedatalevelslightlylowerthan(say90%of)themaximumexperiencedoutdoors.Bycontrollingallvariablesotherthantheoneusedforacceleratingdegradation,onemaymodeltheexpectedeffectofthatvariableatnormal,orusageconditions.Iflaboratoryacceleratedtestdevicesareused,itisessentialtoprovideprecisecontrolofthevariablesusedinordertoobtainusefulinformationforservicelifeprediction.Itisassumedthatthesamefailuremechanismoperatingatthehigherstressisalsothelifedeterminingmechanismattheusagestress.Itmustbenotedthatthevalidityofthisassumptioniscrucialtothevalidityofthefinalestimate.Acceleratedservicelifetestdataoftenshowdifferentdistributionshapesthanmanyothertypesofdata.Thisisduetotheeffectsofmeasurementerror(typicallynormallydistributed),combinedwiththoseuniqueeffectswhichskewservicelifedatatowardsearlyfailuretime(infantmortalityfailures)orlatefailuretimes(agingorwear-outfailures).Applicationsoftheprinciplesinthisguidecanbehelpfulinallowinginvestigatorstointerpretsuchdata.Thechoiceanduseofaparticularaccelerationmodelandlifedistributionmodelshouldbebasedprimarilyonhowwellitfitsthedataandwhetheritleadstoreasonableprojectionswhenextrapolatingbeyondtherangeofdata.Furtherjustificationforselectingmodelsshouldbebasedontheoreticalconsiderations.Note28212;Acceleratedservicelifeorreliabilitydataanalysispackagesarebecomingmorereadilyavailableincommoncomputersoftwarepackages.Thismakesdatareductionandanalysesmoredirectlyaccessibletoagrowingnumberofinvestigators.Thisisnotnecessarilyagoodthingastheabilitytoperformthemathematicalcalculation,withoutthefundamentalunderstandingofthemechanicsmayproducesomeseriouserrors.SeeRef(1).31.1Thisguidebrieflypresentssomegenerallyacceptedmethodsofstatisticalanalysesthatareusefulintheinterpretationofacceleratedservicelifedata.Itisintendedtoproduceacommonterminologyaswellasdevelopingacommonmethodologyandquantitativeexpressionsrelatingtoservicelifeestimation.1.2ThisguidecoverstheapplicationoftheArrheniusequationtoservicelifedata.Itservesasageneralmodelfordeterminingratesatusageconditions,suchastemperature.Itservesasageneralguidefordeterminingservicelifedistributionatusagecondition.Italsocoversapplicationswheremorethanonevariableactsimultaneouslytoaffecttheservicelife.Forthepurposesofthisguide,theaccelerationmodelusedformultiplestressvariablesistheEyringModel.Thismodelwasderivedfromthefundamentallawsofthermodynamicsandhasbeenshowntobeusefulformodelingsometwovariableacceleratedservicelifedata.Itcanbeextendedtomorethantwovariables.1.3Onlythosestatisticalmethodsthathavefoundwideacceptanceinservicelifedataanalyseshavebeenconsideredinthisguide.1.4TheWeibulllifedistributionisemphasizedinthisguideandexamplecalculationsofsituationscommonlyencounteredinanalysisofservicelifedataarecoveredindetail.ItistheintentionofthisguidethatitbeusedinconjunctionwithGuideG166.1.5Theaccuracyofthemodelbecomesmorecriticalasthenumberofvariablesincreasesand/ortheextentofextrapolationfromtheacceleratedstres......
【中国标准分类号】:J04
【国际标准分类号】:03_120_30
【页数】:12P.;A4
【正文语种】:
