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QJ 1331-1987 量规用单头手柄

作者:标准资料网 时间:2024-05-08 02:43:38  浏览:8780   来源:标准资料网
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基本信息
标准名称:量规用单头手柄
中标分类: 航空、航天 >> 航空器与航天器制造用设备 >> 量具
ICS分类: 机械制造 >> 机床装置 >> 分度和刀具/工件夹持装置
发布日期:1987-12-18
实施日期:1988-10-01
首发日期:
作废日期:
出版日期:
页数:1页
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所属分类: 航空 航天 航空器与航天器制造用设备 量具 机械制造 机床装置 分度和刀具/工件夹持装置
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【英文标准名称】:StandardTestMethodforAnalysisofAqueousExtractableProteininNaturalRubberandItsProductsUsingtheModifiedLowryMethod
【原文标准名称】:用改进半空细胞法分析天然橡胶及其制品中水可萃取蛋白质的标准试验方法
【标准号】:ASTMD5712-2005e1
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D11.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:蛋白质;天然橡胶;试验;分光光度法
【英文主题词】:aminoacidanalysis;Lowry;naturalrubberlatex;protein
【摘要】:Thistestmethod,forthedeterminationofproteinlevelsinNR,isprimarilyintendedtotestNRmaterialsforresidualproteincontent.Itisassumedthatallwhousethistestmethodwillbetrainedanalystscapableofperformingcommonlaboratoryproceduresskillfullyandsafely.Itisexpectedthatworkwillbeperformedinaproperlyequippedlaboratory.1.1Thistestmethodcoversananalyticaltestfordeterminingtheamountoftotalaqueousextractableproteinassociatedwithnaturalrubber(NR)anditsproducts.Watersolubleproteinsareextractedinabuffersolutionandthenprecipitatedtoconcentratethemandalsotoseparatethemfromwatersolublesubstancesthatmayinterferewiththedetermination.TheextractedproteinisredissolvedandquantifiedcolorimetricallybythemodifiedLowrymethodusingaproteinstandard.1.2Forthepurposeofthistestmethod,therangeofproteinmeasurementwillbebasedonthelimitofdetectionandquantitationandrecordedinmicrogramsperdm2NRspecimen.1.3Thetestmethodisdesignedtobeaccurateandcompatiblewiththeindustrialenvironment.1.4Stepsareincludedinthistestmethodtominimizetheeffectsofinterferingsubstances.1.5Itisrecognizedthatothermethodsfortheanalysisofleachableproteinsexistandthesemaybeusedforroutinequalitycontrolpurposesprovidedtheyhavebeenvalidatedandacorrelationestablishedagainstthereferencemethodspecifiedbythistestmethod.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G40
【国际标准分类号】:83_040_10
【页数】:9P.;A4
【正文语种】:


【英文标准名称】:OUTLINEOFINVESTIGATIONFORLIGHT-EMITTINGDIODE(LED)RETROFITLUMINAIRECONVERSIONKITSIssueNumber:1
【原文标准名称】:发光二极管(LED)改装灯具改装套件的调查大纲发布号:1
【标准号】:ULSUBJECT1958C-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010-12-31
【实施或试行日期】:2010-12-31
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:1.1Theserequirementsapplytolight-emittingdiode(LED)retrofitluminaireconversionkitsthatareintendedtoreplaceexistinglightsourcesandsystemsincludingincandescent,fluorescent,induction,andhighintensitydischarge(HID)lightsourcesinpreviouslyinstalledluminairesthatalreadycomplywiththerequirementsintheStandardforLuminaires,UL1598.Thekitsareintendedforuseon:a)Luminaireswherespecificluminairemodelorpartnumbersareidentifiedinthekitinstallationinstructions;orb)Oneormoregenerictypeluminairesthatmeetspecificcriteriaidentifiedintheinstallationkitinstructions.1.2ThisoutlineofinvestigationcontainsrequirementsthatsupplementtheluminairerequirementscontainedintheStandardforLuminaires,UL1598thatapplytotheretrofitkitandtheluminaire.1.3LEDretrofitkitscoveredbytheserequirementsincludebutarenotlimitedtoLEDlampsandarrays,LEDcontrolmodules,LEDdrivers,LEDpowersupplies,wiring,lampholders,brackets,wireconnectors,reflectors,diffusers,andotherassociatedmechanical,electrical,oropticaldevices.1.4ThisoutlineofinvestigationdoesnotcoverluminairereflectorkitscoveredbytheStandardforSupplementalRequirementsforLuminaireReflectorKitsforInstallationonPreviouslyInstalledFluorescentLuminaires,UL1598B.1.5Thisoutlineofinvestigationdoesnotcoverluminaireconversionlampsthatareintendedtoreplaceexistinglampswithoutanymodification,rewiring,orcomponentreplacementintheluminaireotherthandirectreplacementofthelampusingtheexistinglampholder.RequirementsforthesedirectreplacementlampsarespecifiedintheStandardforSelf-BallastedLampsandLampAdapters,UL1993.1.6Thisoutlineofinvestigationdoesnotcoverluminaireconversionretrofitkitsforamateurmovielights;aquariumlights,cabinetlights,decorativelightingstrings,combinationfan/IRlampsusedforheating,electricsigns,exitsigns,junctionboxesforswimmingpoolfixtures,lampadapters,low-levelpathmarkingandlightingsystems,low-voltagelandscapelighting,lowvoltagelightingfixturesforuseinrecreationalvehicles,lowvoltagemarinelighting,luminairsforhazardouslocations,luminairesforrecreationalvehicles,marinenavigationallights,marine-typefixtures,portableelectricdisplays,portablehandlamps,portableluminaires,portablesun/heatlamps,self-ballastedlampsandlampadapters,stageandstudioluminaires,submersibleluminaires,swimmingpoolluminaires,temporarylightingstrings,therapeuticlamps,tracklightingsystems,under-cabinetlightsandcord-connectedunder-cabinetlightsandunitequipmentforemergencylighting.
【中国标准分类号】:K73
【国际标准分类号】:
【页数】:34P.;A4
【正文语种】:英语



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