NF X43-133-2011 工作场所大气.超细悬浮微粒/毫微悬浮颗粒表征.使用微分迁移率分析系统测定粒度分布和计数浓度.
时间:2024-04-26 07:41:58 来源: 标准资料网 作者：标准资料网 阅读：8961
【英文标准名称】:Workplaceatmospheres-Characterizationofultrafineaerosols/nanoaerosols-Determinationofthesizedistributionandnumberconcentrationusingdifferentialmobilityanalysingsystems.
【原文标准名称】:工作场所大气.超细悬浮微粒/毫微悬浮颗粒表征.使用微分迁移率分析系统测定粒度分布和计数浓度.
【标准号】:NFX43-133-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-06-01
【实施或试行日期】:2011-06-18
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aerosols;Air;Airpollution;Airquality;Analysis;Atmosphere;Atmosphericpollutants;Characterisations;Chemicalcomposition;Chemicalproperties;Chemicals;Concentration;Concentration(chemical);Dangerousmaterials;Dangerousstuffs;Definitions;Determination;Emissionmeasurement;Environment(working);Environmentalcondition;Evaluations;Exposure;Fine;Hazards;Healthprotection;Inhaledair;Measurement;Measuringincertainity;Measuringtechniques;Methodsformeasuring;Metrology;Occupationalsafety;Particles;Pollutantconcentration;Pollutants;Pollutionoftheair;Properties;Safetyengineering;Specification(approval);Spectrometers;Spectrometry;Strategyofmeasurement;Testing;Workingmaterials;Workingplaceconcentration;Workingplaces;Workplacesafety;Zonesofreach
【摘要】:
【中国标准分类号】:C70
【国际标准分类号】:13_040_30
【页数】:24P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodsforLaboratoryDeterminationofDensity(UnitWeight)ofSoilSpecimens
【原文标准名称】:实验室测定土壤样品的密度(单位重量)的标准试验方法
【标准号】:ASTMD7263-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D18.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:density;porosity;saturation;specimen;unitweight;voidratio
【摘要】:Drydensity,asdefinedasx201C;densityofsoilorrockx201D;inTerminologyD653andx201C;bulkdensityx201D;bysoilscientists,canbeusedtoconvertthewaterfractionofsoilfromamassbasistoavolumebasisandvise-versa.Whenparticledensity,thatis,specificgravity(TestMethodsD854)isalsoknown,drydensitycanbeusedtocalculateporosityandvoidratio(seeAppendixX1).Drydensitymeasurementsarealsousefulfordeterminingdegreeofsoilcompaction.Sincemoisturecontentisvariable,moistsoildensityprovideslittleusefulinformationexcepttoestimatetheweightofsoilperunitvolume,forexample,poundspercubicyard,atthetimeofsampling.Sincesoilvolumeshrinkswithdryingofswellingsoils,bulkdensitywillvarywithmoisturecontent.Hence,thewatercontentofthesoilshouldbedeterminedatthetimeofsampling.Densities(unitweights)ofremolded/reconstitutedspecimensarecommonlyusedtoevaluatethedegreeofcompactionofearthenfills,embankments,etc.Drydensityvaluesareusuallyusedinconjunctionwithcompactioncurvevalues(TestMethodsD698andD1557).Density(unitweight)isoneofthekeycomponentsindeterminingthemasscomposition/phaserelationsofsoil,seeAppendixX1.Note18212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingitandthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonseveralfactors;PracticeD3740providesameansofevaluatingsomeofthesefactors.1.1Thesetestmethodsdescribetwowaysofdeterminingthetotal/moistanddrydensities(unitweights)ofintact,disturbed,remolded,andreconstituted(compacted)soilspecimens.Density(unitweight)asusedinthisstandardmeansthesameasx201C;bulkdensityx201D;ofsoilasdefinedbytheSoilScienceSocietyofAmerica.Intactspecimensmaybeobtainedfromthin-walledsamplingtubes,blocksamples,orclods.Specimensthatareremoldedbydynamicorstaticcompactionproceduresmayalsobemeasuredbythesemethods.Thesemethodsapplytosoilsthatwillretaintheirshapeduringthemeasurementprocessandmayalsoapplytoothermaterialssuchassoil-cement,soil-lime,soil-bentoniteorsolidifiedsoil-bentonite-cementslurries.Itiscommonforthedensity(unitweight)ofspecimensafterremovalfromsamplingtubesandcompactionmoldstobelessthanthevaluebasedontubeormoldvolumes,orofin-situconditions.Thisisduetothespecimenswellingafterremovaloflateralpressures.1.1.1MethodAcoverstheprocedureformeasuringthevolumeofwaxcoatedspecimensbydeterminingthequantityofwaterdisplaced.1.1.1.1Thismethodonlyappliestospecimensinwhichthewaxwillnotpenetratetheoutersurfaceofthespecimen.1.1.2MethodBcoverstheprocedurebymeansofthedirectmeasurementofthedimensionsandmassofaspecimen,usuallyoneofcylindricalshape.Intactandreconstituted/remoldedspecimensmaybetestedbythismethodinconjunctionwithstrength,permeability(air/water)andcompressibilitydeterminations.1.2ThevaluesstatedinSIunitsare......
【中国标准分类号】:B11
【国际标准分类号】:13_080_20
【页数】:7P.;A4
【正文语种】:英语
【英文标准名称】:Sawntimberusedinindustrialpackaging.Permitteddeviationsandpreferentialsizes.
【原文标准名称】:工业包装用锯材.允许偏差和优选尺寸
【标准号】:NFB53-665-1999
【标准状态】:现行
【国别】:法国
【发布日期】:1999-09-01
【实施或试行日期】:1999-09-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:木材;含量;宽度;包装件;额定尺寸;厚度;尺寸偏差;优先尺寸;;;木托盘;定义;锯材;尺寸
【英文主题词】:
【摘要】:
【中国标准分类号】:B69
【国际标准分类号】:55_040;79_040
【页数】:8P;A4
【正文语种】:其他