NF P22-202-1/A1-2000 DTU32.2建筑工程.金属构架.铝合金框架.第1部分:技术规范

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【英文标准名称】:Telecommunication-Radioequipmentandsystems-Technicalregulationforconformityassessmentoflowpowerandlowrangeradioequipmenttobeusedinradiuovideolinksinthefrequencyrange2454-2483,5MHz
【原文标准名称】:通信.无线电设备和系统.在频率范围2454.2-483,5MHz用于无线电视频连接的低功率和低倍率无线电设备一致性评定用技术规程.
【标准号】:NFZ84-035-1999
【标准状态】:现行
【国别】:法国
【发布日期】:1999-06-01
【实施或试行日期】:
【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】:
【摘要】:Telecommunication-Radioequipmentandsystems-Technicalregulationforconformityassessmentoflowpowerandlowrangeradioequipmenttobeusedinradiuovideolinksinthefrequencyrange2454-2483,5MHz
【中国标准分类号】:M36
【国际标准分类号】:13_320
【页数】:6P.;A4
【正文语种】:法语


【英文标准名称】:StandardTestMethodforEnumerationofAquaticBacteriabyEpifluorescenceMicroscopyCountingProcedure
【原文标准名称】:按荧光显微镜计算程序进行水生菌计数的试验方法
【标准号】:ASTMD4455-1985(2002)
【标准状态】:现行
【国别】:
【发布日期】:1985
【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】:D19.24
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:水;计算系统;试验;细菌纲;计数
【英文主题词】:aquaticbacteria;epifluorescence;epifluorescencemicroscopycountingprocedure
【摘要】:Bacterialpopulations,aspartofthemicrobialcommunityinaquaticsystemsareactivelyinvolvedinnutrientcycling.Thesignificanceofthesepopulationsisoftendifficulttoascertainbecauseofthepresenceofmanyphysiologicaltypes.However,measurementofbacterialdensitiesisusuallythefirststepintryingtoestablishanyrelationshipthatmightexistbetweenbacteriaandotherbiochemicalprocesses.4Acridine-orangeepifluorescencedirect-countingprocedurecannotdifferentiatebetweenviableandnonviablecells.Thisprocedurecannotbeusedtoconvertdirectlythenumberstototalcarbonbiomassbecauseofthenaturalvariationsinbacterialcellsize.Theacridine-orangeepifluorescencedirect-microscopiccountisbothquantitativeandprecise.Thisprocedureisidealforenumeratingbothpelagicandepibenthicbacteriainallfreshwaterandmarineenvironments.5Theprocesscanbeemployedinsurveyactivitiestocharacterizethebacteriologicaldensitiesofenvironmentalwaters.Theprocedurecanalsobeusedtoestimatebacterialdensitiesincoolingtowerwaters,processwaters,andwatersassociatedwithoildrillingwells.1.1Thistestmethoddescribesaprocedurefordetectionandenumerationofaquaticbacteriabytheuseofanacridine-orangeepifluorescencedirect-microscopiccountingprocedure.Itisapplicabletoenvironmentalwaters.1.2Certaintypesofdebrisandothermicroorganismsmayfluoresceinacridineorange-stainedsmears.1.3Thetestmethodrequiresatrainedmicrobiologistortechnicianwhoiscapableofdistinguishingbacteriafromotherfluorescingbodiesonthebasisofmorphologywhenviewedathighermagnifications.1.4Useofbrightlightpermitsdifferentiationofsinglebacteriawherereducedformazanisdepositedatthepolarends.1.5Approximately1014cells/mLarerequiredfordetectionbythistestmethod.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:07_100_20(MICROBIOLOGYOFWATER)
【页数】:3P.;A4
【正文语种】: