BS 7578-1992 耦合电容器和电容器分压器

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【英文标准名称】:StandardTestMethodforSkidResistanceMeasurementsUsingtheNorthCarolinaStateUniversityVariable-SpeedFrictionTester
【原文标准名称】:使用北卡罗来纳州大学变速摩擦试验仪作防滑测量的标准试验方法
【标准号】:ASTME707-1990(2002)
【标准状态】:作废
【国别】:
【发布日期】:1990
【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】:E17.23
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:精整;公路建设;路面(道路);道路;施工材料;路面;防滑性能;材料;建筑;承重面的表面修饰;表面;摩擦试验;试验
【英文主题词】:aggregate-pavementsurfaces;bituminousemulsions-asphalt;bituminouspavingmixtures-skidresistance;NorthCarolinaStateUniversityfrictiontester;pavementsurfaces-skidresistance;skidresistance
【摘要】:1.1Thistestmethodcoversthemeasurementofskidresistanceofpavedsurfacesorlaboratory-preparedspecimensusingtheNorthCarolinaStateUniversityVariable-SpeedFrictionTester.1.2TheVariable-SpeedFrictionTester(VST)isapendulum
【中国标准分类号】:A53
【国际标准分类号】:93_080_20
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:Petroleumproducts-Determinationofsulfurcontent-Wavelength-dispersiveX-rayfluorescencespectrometry(ISO14596:2007);EnglishversionofDINENISO14596:2007-12
【原文标准名称】:石油产品.硫含量的测定.波长色散X射线荧光光谱法
【标准号】:DINENISO14596-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-12
【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】:分析;校正;化学分析和测试;化学品;含量测定;测量规程;荧光测定法;燃料;质量浓度;材料测试;矿物油;石油产品;基准曲线;试样制备;抽样方法;光谱化学分析;光谱测定法;硫;硫含量;试验设备;测试;全硫;波长色散;X射线荧光;X射线荧光光谱法
【英文主题词】:Analysis;Calibration;Chemicalanalysisandtesting;Chemicals;Determinationofcontent;Determinationprocedures;Fluorimetry;Fuels;Massconcentration;Materialstesting;Mineraloils;Petroleumproducts;Referencecurve;Samplepreparation;Samplingmethods;Spectrochemicalanalysis;Spectrometry;Sulphur;Sulphurcontent;Testequipment;Testing;Totalsulphur;Wavelengthdispersive;X-rayfluorescence;X-rayfluorescencespectrometry
【摘要】:ThisInternationalStandardspecifiesamethodforthedeterminationofthesulfurcontentofliquidpetroleumproducts,additivesforpetroleumproducts,andsemi-solidandsolidpetroleumproductsthatareeitherliquefiedbymoderateheatingorsolubleinorganicsolvents(see4.1)ofnegligibleoraccuratelyknownsulfurcontent.Themethodisapplicabletoproductsoradditiveshavingsulfurcontentsintherange0,001%(m/m)to2,50%(m/m);highercontentscanbedeterminedbyappropriatedilution.Otherelementsdonotinterfereatconcentrationsanticipatedinthematerialssubjecttothisanalysis.ONOTEForthepurposesofthisInternationalStandard,theterm"%(mhn)"isusedtorepresentthemassfractionofamaterial.Highconcentrationsofphosphorusorchlorine[typicallyabove3%(m/m)]cancausebiasinthesulfurresultbyabsorbingZr-LαandS-Kαtodifferentextents.Itisnecessaryinthesecasestocarryoutstudiestodeterminewhetherthispotentialinterferenceissignificant.Whenlargeramountsofmolybdenumarepresent(typicallyabove50mg/kgto100mg/kg),increasedbackgroundradiationandspectraloverlapwiththesulfursignalcanoccur.Itisnecessaryinthesecasestoinspecttherelevantspectralregions,forexample,toinvestigatethesignificanceofthispotentialsourceofbias.
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:13P.;A4
【正文语种】:英语