BS EN 61606-1997 音频和视听设备.数字声频元件.声频特性测量基本方法

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【英文标准名称】:Audioandaudiovisualequipment-Digitalaudioparts-Basicmethodsofmeasurementofaudiocharacteristics
【原文标准名称】:音频和视听设备.数字声频元件.声频特性测量基本方法
【标准号】:BSEN61606-1997
【标准状态】:作废
【国别】:英国
【发布日期】:1997-08-15
【实施或试行日期】:1997-08-15
【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】:线性度;乱真信号;音频设备;电压测量;阻抗测量;相位测量(电);电视接收机;无线电接收机;数字记录法;频率响应;电波测量;录音;电功率测量;双道记录;性能试验;视听资料;音频放大器;信噪比;试验设备;音频系统;试验条件;信号失真;记录设备;电学测量
【英文主题词】:digitalaudio;videoequipment;measurementconditions;audiosignals;electricalengineering;methodsformeasuring;audiovisualequipment;audioappliances;definitions;properties
【摘要】:
【中国标准分类号】:M72;M73
【国际标准分类号】:
【页数】:38P.;A4
【正文语种】:英语


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【英文标准名称】:StandardsandGuidesforOperationandMaintenanceofNuclearPowerPlants
【原文标准名称】:核电站的运行和维护的标准和指南
【标准号】:ANSI/ASMEOM-S/Ga-2004
【标准状态】:作废
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:使用条件;性能试验;试验;监督系统;振动;核电站;核电站;核技术;轻水反应堆;核装置;冷却水;核安全;导则;标准;操作;维修;规范(验收);监督(认可)
【英文主题词】:
【摘要】:
【中国标准分类号】:F65
【国际标准分类号】:27_120_20
【页数】:
【正文语种】:英语


【英文标准名称】:StandardTestMethodforAdenosineTriphosphate(ATP)ContentofMicroorganismsinFuel,Fuel/WaterMixturesandFuelAssociatedWater
【原文标准名称】:水中微生物的三磷酸腺甙(ATP)含量的标准试验方法
【标准号】:ASTMD7463-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D02.14
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:adenosinetriphosphate;ATP;bacteria;biocontamination;biodeterioration;biomass;fuel;fungi;microbe;microbiology
【摘要】:ThistestmethodmeasurestheconcentrationofATPpresentinthesample.ATPisaconstituentofalllivingcellsincludingbacteriaandfungi.Consequently,thepresenceofATPisareliableindicatorofmicrobialcontaminationinfuelsystems.ATPisnotassociatedwithmatterofnon-biologicalorigin.ThistestmethoddiffersfromTestMethodD4012asfollows:ByprovidingfortherapiddeterminationofATPpresentinafuel(petroleum)sample,afuelandwatermixturesample,fuel-associatedbottomwatersampleandextracellularATPfreelyavailableinthefueloraqueoussamplematrix;Byprovidingforamethodtocapture,extractandquantifyATPusingself-containedtestdeviceandluminometer;ByprovidingamethodofquantifyingATPpresentinfuelorwatermatricesingenerallylessthan10min;andByprovidingfortherapidseparationoftheATPfromchemicalinterferencesthathavepreviouslypreventedtheuseofATPdeterminationsincomplexfluidscontaininghydrocarbonsandotherorganicmolecules.Thistestmethoddoesnotrequiretheuseofhazardousmaterialsanddoesnotgeneratebiohazardwaste.Thistestmethodcanbeusedtoestimateviablemicrobialbiomass,toevaluatetheefficacyofantimicrobialpesticides,andtomonitormicrobialcontaminationinfuelstorageanddistributionsystems.1.1Thistestmethodprovidesaprotocolforcapturing,extractingandquantifyingtheadenosinetriphosphate(ATP)contentassociatedwith:1.1.1Microorganismsfoundinconventionalliquidfuelswithkinematicviscosities(at40x00B0;C)ofx2264;8mm2x00B7;sx2013;1asdescribedinTableX6.1,1.1.2Microorganismsfoundinfuel-associatedbottomwater,and1.1.3Extracellular(non-cellular)ATPpresentinthesamplematrix.1.2TheATPismeasuredusingapatentedbioluminescenceenzymeassay,wherebylightisgeneratedinamountsproportionaltotheconcentrationofATPinthesample.ThelightisproducedandmeasuredquantitativelyusingdedicatedATPtestpensandadedicatedluminometerandreportedin(instrumentspecific)RelativeLightUnits.1.3Thistestmethodisequallysuitableforuseinthelaboratoryorfield.1.4AlthoughbioluminescenceisareliableandprovenmethodforqualifyingandquantifyingATP,thismethoddoesnotdifferentiatebetweenATPfromdifferentsources,forexample,fromdifferenttypesofmicroorganismsuchasbacteriaorfungi.1.5Forwaterorcapturesolutionsamples,theconcentrationrangeofATPdetectablebythistestmethodis1x00D7;10x2013;11Mto3x00D7;10x2013;8Mwhichisequivalentto1x00D7;10x2013;14moles/mLto3x00D7;10x2013;11moles/mLforwatersamplesorcapturesolution.Assumingtestingonfuelphaseisperformedona500mLvolumeoffueltheequivalentconcentrationsisfuelwouldbe:6x00D7;10x2013;11Mto2x00D7;10x2013;14M.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7Thisstandarddoesnotpurporttoaddressallo......
【中国标准分类号】:Z16
【国际标准分类号】:75_160_20
【页数】:7P.;A4
【正文语种】:英语