ASTM F 43-1999 半导体材料电阻率的试验方法
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【英文标准名称】:TestMethodsforResistivityofSemiconductorMaterials
【原文标准名称】:半导体材料电阻率的试验方法
【标准号】:ASTMF43-1999
【标准状态】:作废
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:耐力;试验;半导体;材料;电子工程
【英文主题词】:resistance;materials;testing;electronicengineering;semiconductors
【摘要】:
【中国标准分类号】:H80
【国际标准分类号】:29_045
【页数】:
【正文语种】:英语
【英文标准名称】:Workplaceatmospheres-Protocolforevaluatingtheperformanceofdiffusivesamplers
【原文标准名称】:工作场所空气.扩散取样器的性能评估协议
【标准号】:BSISO16107-1999
【标准状态】:作废
【国别】:英国
【发布日期】:1999-11-15
【实施或试行日期】:1999-11-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:合格;大气;气体分析;统计方法分析;质量保证;效率;质量;职业安全;干扰(化学);试验持续时间;自然工作条件;性能试验;试验条件;含量测定;流量测量;方程;试验设备;计算机应用;误差修正;扩散;置信限;空气污染;文献索引;准确度;采样设备;分类系统;空气;性能
【英文主题词】:Airpollution;Airquality;Bias;Dangerousstuffs;Diffusion;Diffusivesamplers;Efficiency;Gasanalysis;Healthprotection;Measuringinstruments;Occupationalsafety;Specification(approval);Symbols;Workingplaces;Workplacesafety
【摘要】:1ThisInternationalStandardcoverstheevaluationoftheperformanceofdiffusivesamplersofgasesandvapoursforuseoversamplingperiodsfrom4hto12h.Samplingperiodsofsuchdurationarethemostcommoninworkplacesampling.Givenasuitableexposurechamber,thisInternationalStandardcanbestraightforwardlyextendedtocoversamplersforuseoverothersamplingperiodsaswell.Theaimistoprovideaconcisesetofexperimentsforclassifyingsamplersprimarilyaccordingtoasinglenumericalvaluerepresentingsampleraccuracy.NOTEAccuracyestimatesrefertoconditionsofsamplerusewhicharenormallyexpectedinaworkplacesetting.Theseconditionsmaybecharacterizedbythetemperature,atmosphericpressure,humidityandambientwindspeed,noneofwhichmaybeconstantoraccuratelyknown.Furthermore,theaccuracyaccountsfordifficultyintheestimationoftime-weightedaveragesofconcentrationswhichmaynotbeconstantintime.Inadditiontoaccuracydetermination,amethodisprovidedtotestthesamplersforcompliancewiththemanufacturer'sstatedlimitsoncapacity,possiblyinthepresenceofinterferingcompounds.Amethodisgivenforclassificationofsamplersaccordingtotheircapabilitytodetectsituationsinwhichsamplercapacitymaybeexceeded.2ThisInternationalStandardisanextensionofpreviousresearchondiffusivesamplers[1-17]aswellasEN838.Essentialadvantagesaretheestimationofsampleraccuracyunderactualconditionsofuseandthereductionincostofsamplerevaluation.NOTEFurtheringthelatterpoint,knowledgeofsimilaritybetweenanalytesofinterestcanbeusedtoexpeditesamplerevaluation.Forexample,interpolationofdatacharacterizingthesamplingofanalytesatseparatedpointsofahomologousseriesofcompoundsisrecommended.Atpresenttheprocedurein[9]issuggested:Followingevaluationofasamplerinuseatasinglehomologousseriesmemberaccordingtothepresentpractice,highermolecularweightmemberswouldreceivepartialvalidationsconsideringsamplingrate,capacity,analyticalrecoveryandinterferences.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_30
【页数】:22P;A4
【正文语种】:英语
MIL-DTL-13714F, DETAIL SPECIFICATION: TRAILER, UTILITY, CABLE REEL, 3.5 TON, M31 (28 AUG 1998) [SUPERSEDING MIL-PRF-13714E]., This specification covers one type of trailer for use as a tactical military vehicle under extreme or unusual conditions of climate, weather, terrain, and military service.
