【英文标准名称】:Ureaforindustrialuse;Determinationofbiuretcontent;Photometricmethod
【原文标准名称】:工业用尿素缩二脲含量的测定光度法
【标准号】:ISO2754-1973
【标准状态】:作废
【国别】:国际
【发布日期】:1973-12
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:光度测量法;脲;含量测定;缩二脲;光度测量法(化学分析)
【英文主题词】:photometry;ureas;biuret;photometry(chemicalanalysis);determinationofcontent;urea
【摘要】:Applicabletothedeterminationinthepresenceofammoniacalsaltslessthan15mginthealiquotamounttakenforthedetermination.Inthepresenceofquantitiesexceeding15mgtheammoniacalnitrogenshallberemovedbyacationexchangeresinbecausethesesaltsinterferewiththedetermination.Theprincipleofthereactionconsistsinformationofaviolet-redcomplexbetweenallophanicacidamide(H2N.CO.NH.CO.NH2)andcoppersulphateinthepresenceofanalkalinesolutionofpotassiumsodiumtartrate.Photometricmeasurementatawavelengthofabout550nm.HasalsobeenapprovedbytheIUPAC.
【中国标准分类号】:G15
【国际标准分类号】:5605;0520
【页数】:3P;A4
【正文语种】:英语


【英文标准名称】:Aircraftgroundsupportequipment-Specificrequirements-Part4:Passengerboardingbridges
【原文标准名称】:航空器地勤支援设备.专门要求.第4部分:乘客登机桥
【标准号】:BSEN12312-4-2003+A1-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2003-05-29
【实施或试行日期】:2003-05-29
【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】:航空设备;航空航天运输;空中运输;航空运输;航空器地面支持设备;桥;定义;传动系统;地面设备;乘客登机桥;安全性要求;航天运输;规范(验收);楼梯;悬索桥;望远镜;运输;警告装置
【英文主题词】:Aeronauticalequipment;Aerospacetransport;Airtraffic;Airtransport;Aircraftgroundsupportequipments;Bridges;Definitions;Drivesystems;Groundequipment;Passengerboardingbridges;Safetyrequirements;Spacetransport;Specification(approval);Stairs;Suspensionbridges;Telescopes;Transport;Warningdevices
【摘要】:ThisEuropeanStandardspecifiesthetechnicalrequirementstominimisethehazardslistedinclause4whichcanariseduringthecommissioning,operationandmaintenanceofPBB'swhencarriedoutinaccordancewiththespecificationsgivenbythemanufacturerorhisauthorisedrepresentative.Italsotakesintoaccountsomerequirementsrecognisedasessentialbyauthorities,aircraftandgroundsupportequipment(GSE)manufacturersaswellasairlinesandhandlingagencies.Thisstandardappliesto:-apron-drivebridges;-fixed-headbridges(alsoreferredtoasnose-loaders)orpedestalbridges;-suspendedbridges,forembarking/disembarkingofpassengers.Itisapplicablefromtheinterfaceofthebuildingtotheconnectionwiththeaircraft.AnexampleofatypicalPBBisshowninannexA.Thisstandarddoesnotapplyto:-elevatinglounges;-passengerstairs;-otherformsofaircraftaccessequipmentortothefixedbuildingstructuretowhichthePBBinterfaces.Thisstandarddoesnotestablishrequirementsforhazardscausedbynoiseandvibration.ThisPartofEN12312isnotapplicabletoPBB'swhicharemanufacturedbeforethedateofpublicationofthisstandardbyCEN.ThispartofEN12312isintendedtobeusedinconjunctionwithEN1915-1,EN1915-2,EN1915-3(forvehicles)andEN1915-4.
【中国标准分类号】:V56
【国际标准分类号】:49_100
【页数】:24P.;A4
【正文语种】:英语