SAE AS9557 Bolt, Machine-Double Hexagon Extended Washer Head, Corrosion and Heat Resistant Steel, .250-28 UNJF-3A
作者:标准资料网 时间:2024-05-01 14:20:44 浏览:8094
来源:标准资料网
Product Code:SAE AS9557
Title:Bolt, Machine-Double Hexagon Extended Washer Head, Corrosion and Heat Resistant Steel, .250-28 UNJF-3A
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope:No scope available.
【英文标准名称】:StandardGuideforDevelopingMethodologyforEvaluatingtheAbilityofIndoorMaterialstoSupportMicrobialGrowthUsingStaticEnvironmentalChambers
【原文标准名称】:确定用静态环境室评价支持微生物生长的室内物质的能力的方法的标准指南
【标准号】:ASTMD6329-1998(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【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】:D22.05
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:bacterialgrowth;buildingmaterial;fungalgrowth;indoorairquality;indoorsinks;indoorsources;materialsusceptability;microorganisms;staticchamber;Fungalinfluence/resistance;Indoorairanalysis;Microbialenvironments;Microbiologica
【摘要】:Thestaticchambershaveseveraldifferentapplications:4.1.1Thestaticchamberscanbeusedtocomparethesusceptibilityofdifferentmaterialstothecolonizationandamplificationofvariousmicroorganismsunderdefinedconditions.4.1.2Chambersoperatedathighrelativehumiditiesmaybeusedtoperformworstcasescenarioscreeningtestsonmaterialsbyprovidinganatmospherewhereenvironmentalconditionsmaybefavorableformicrobialgrowth.4.1.3Useofmultiplechamberswithdifferentenvironmentalparameters,suchasarangeofrelativehumidities,permitstheevaluationofmultiplemicroenvironmentsandallowsinvestigationofmaterialsunderdifferingenvironmentalconditions.4.1.4Dryingrequirementsforwettedmaterialsmayalsobeinvestigated.Thisinformationmayberelevantfordeterminingmaterialresistancetomicrobialgrowthafterbecomingwet.Theseconditionsmaysimulatethosewherematerialsaresubjectedtowaterincursionthroughleaksaswellasduringremediationofabuildingafterafire.4.1.5Growthratesofmicroorganismsonthematerialmayalsobeinvestigated.Onceithasbeenestablishedthatorganismsareabletogrowonaparticularmaterialunderdefinedconditions,investigationsintotherateoforganismgrowthmaybeperformed.Theseevaluationsprovidebaselineinformationandcanbeusedtoevaluatemethodstolimitorcontainamplificationofmicroorganisms.Thesetechniquesshouldbeperformedbypersonnelwithtraininginmicrobiology.Theindividualmustbecompetentintheuseofsteriletechnique,whichiscriticaltoexcludeexternalcontaminationofmaterials.1.1Manydifferenttypesofmicroorganisms(forexample,bacteria,fungi,viruses,algae)canoccupyindoorspaces.Materialsthatsupportmicrobialgrowtharepotentialindoorsourcesofbiocontaminants(forexample,sporesandtoxins)thatcanbecomeairborneindoorbiopollutants.Thisguidedescribesasimple,relativelycosteffectiveapproachtoevaluatingtheabilityofavarietyofmaterialstosupportmicrobialgrowthusingasmallchambermethod.1.2Thisguideisintendedtoassistgroupsinthedevelopmentofspecifictestmethodsforadefinitematerialorgroupsofmaterials.1.3Staticchambershavecertainlimitations.Usually,onlysmallsamplesofindoormaterialscanbeevaluated.Caremustbetakenthatthesesamplesarerepresentativeofthematerialsbeingtestedsothatatrueevaluationofthematerialisperformed.1.4Staticchambersprovidecontrolledlaboratorymicroenvironmentconditions.Thesechambersarenotintendedtoduplicateroomconditions,andcaremustbetakenwheninterpretingtheresults.Staticchambersarenotasubstitutefordynamicchambersorfieldstudies.1.5Avarietyofmicroorganisms,specificallybacteriaandfungi,canbeevaluatedusingthesechambers.Thisguideisnotintendedtoprovidehumanhealtheffectdata.However,organismsofclinicalinterest,suchasthosedescribedaspotentiallyallergenic,maybestudiedusingthisapproach.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z04
【国际标准分类号】:07_100_99
【页数】:6P.;A4
【正文语种】:英语
【英文标准名称】:Electromagneticcompatibility(EMC)-Part4-6:Testingandmeasurementtechniques;Immunitytoconducteddisturbances,inducedbyradio-frequencyfields;Amendment1
【原文标准名称】:电磁兼容性(EMC)第4部分:试验和测量技术第6节:对射频场诱发的传导扰动的抗扰度修改1
【标准号】:IEC61000-4-6AMD1-2000
【标准状态】:作废
【国别】:国际
【发布日期】:2000-11
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC77B
【标准类型】:()
【标准水平】:()
【中文主题词】:电气设备;无线电干扰;测量技术;干扰抑制;电气工程;电磁兼容性;试验;射频信号
【英文主题词】:
【摘要】:
【中国标准分类号】:L06
【国际标准分类号】:33_100_20
【页数】:5P;A4
【正文语种】:英语
