NF Z87-019-11-1995 设备工程.电信设备的环境条件和环境试验.第1-1部分:环境条件分类.储藏

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【英文标准名称】:Informationtechnology-Securitytechniques-Digitalsignatureschemesgivingmessagerecovery-Discretelogarithmbasedmechanisms
【原文标准名称】:信息技术.安全技术.带电文恢复的数字签名方案.基于离散对数的机制
【标准号】:BSISO/IEC9796-3-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2006-10-31
【实施或试行日期】:2006-10-31
【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】:数据处理;数据保护;数据安全;数据传输;定义;数字的;数字签名;离散;识别;信息交流;信息交换;信息技术;对数;文电处理;回收;安全;签字;通信;文本处理
【英文主题词】:Dataprocessing;Dataprotection;Datasecurity;Datatransmission;Definition;Definitions;Digital;Digitalsignature;Digitalsignatures;Discrete;Identification;Informationexchange;Informationinterchange;Informationtechnology;Logarithms;Messagehandling;Recuperation;Safety;Signatures;Telecommunication;Textprocessings
【摘要】:ThispartofISO/IEC9796specifiessixdigitalsignatureschemesgivingmessagerecovery.Thesecurityoftheseschemesisbasedonthedifficultyofthediscretelogarithmproblem,whichisdefinedonafinitefieldoranellipticcurveoverafinitefield.ThispartofISO/IEC9796alsodefinesanoptionalcontrolfieldinthehash-token,whichcanprovideaddedsecuritytothesignature.ThispartofISO/IEC9796specifiesrandomizedmechanisms.ThemechanismsspecifiedinthispartofISO/IEC9796giveeithertotalorpartialmessagerecovery.NOTEFordiscretelogarithmbaseddigitalsignatureschemeswithappendix,seeISO/IEC14888-3.
【中国标准分类号】:M11
【国际标准分类号】:35_040
【页数】:80P.;A4
【正文语种】:英语


【英文标准名称】:Gassupplysystems-Pipelinesformaximumoperatingpressureover16bar-Functionalrequirements;EnglishversionofDINEN1594:2009-06
【原文标准名称】:供气系统.最大工作压力大于16巴的管道.功能要求
【标准号】:DINEN1594-2009
【标准状态】:现行
【国别】:德国
【发布日期】:2009-06
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:元部件;建筑工程;防腐蚀;定义;设计;环境;燃气管路;燃气供应;供气系统;燃气技术;气体运输;维护;材料;使用条件;操作;操作安全;管道;管路;计划;压力;压力试验;质量;质量要求;安全;安全要求;规范(验收);结构体系;测试;焊接
【英文主题词】:Components;Constructions;Corrosionprotection;Definitions;Design;Environment;Gascircuits;Gassupply;Gassupplysystem;Gastechnology;Gastransportation;Maintenance;Materials;Operatingconditions;Operation;Operationalsafety;Pipelines;Piping;Planning;Pressure;Pressuretests;Quality;Qualityrequirements;Safety;Safetyrequirements;Specification(approval);Structuralsystems;Testing;Welding
【摘要】:ThisEuropeanStandardisapplicabletopipelineswithamaximumoperatingpressure(MOP)over16barforthecarriageofprocessed,non-toxicandnon-corrosivenaturalgasaccordingtoENISO13686inonlandgassupplysystems,where:--pipelineelementsaremadeofunalloyedorlow-alloyedcarbonsteel;--pipelineelementsarejoinedbywelds,flangesormechanicalcouplings;--thepipelineisnotlocatedwithincommercialorindustrialpremisesasanintegralpartoftheindustrialprocessonthesepremisesexceptforanypipelinesandfacilitiessupplyingsuchpremises;--thedesigntemperatureofthesystemisbetween-40~Cand120~Cinclusive.Thestandardappliestoonshorepipelinesystemsfromthepointwherethepipelinefirstcrosseswhatisnormallyacceptedasbatterylimitbetweenonandoffshore,e.g.:--firstisolationvalve;--thebaseofsteepseashelf;--abovethehighwater/lowwatermarkontomainland;--anisland.Thepipelinestandardalsoappliestoapipelinesystemwithastartingpointonshore,alsowhenpartsofthepipelinesystemonthemainlandsubsequentlycrossfjords,lakesetc.ThisEuropeanStandarddoesnotapplytoexistingpipelines,inusepriortothepublicationofthisEuropeanStandard,nortomodificationstoexistingpipelines.GassupplysystemscoveredbythisEuropeanStandardbeginafterthegasproducer'smeteringstation.Thefunctionaldemarcationofthepipelinesystemwithinaplantareawillbedeterminedfromcasetocase.Generallyspeaking,thiswillbedirectlyafterthefirstisolatingvalveoftheinstallation.Thisstandardalsodescribesthemechanicalrequirementsforpipeworkinstationswithamaximumoperatingpressuregreaterthan16bar.WeldingrequirementsaredescribedinaspecialapplicationstandardonweldingforgassupplysystemsEN12732.Functionalrequirementsforstationsaregivenin:EN1776,Gassupplysystems-Naturalgasmeasuringstations-FunctionalrequirementsEN1918-5,Gassupplysystems-Undergroundgasstorage-Part5:FunctionalrecommendationsforsurfacefacilitiesEN12186,Gassupplysystems-Gaspressureregulatingstationsfortransmissionanddistribution-FunctionalrequirementsEN12583,Gassupplysystems-Compressorstations-FunctionalrequirementsThisEuropeanStandardspecifiescommonbasicprinciplesforgassupplysystems.UsersofthisEuropeanStandardshouldbeawarethattheremayexistmoredetailednationalstandardsandcodesofpracticeintheCENmembercountries.ThisEuropeanStandardisintendedtobeappliedinassociationwiththesenationalstandardsand/orcodesofpracticesettingouttheabovementionedprinciples.Intheeventofconflictsintermsofmorerestrictiverequirementsinthenationallegislation/regulationwiththerequirementsofthisEuropeanStandard,thenationallegislation/regulationshalltakeprecedence.ReferenceismadeinthisEuropeanStandardtorelevantEuropeanandotherrecognizedstandardsforproductsusedtoconstructandoperategassupplysystems.AschematicrepresentationofpipelinesforgastransmissionisgiveninFigure1.
【中国标准分类号】:Q82
【国际标准分类号】:23_040_01;75_200
【页数】:85P.;A4
【正文语种】:英语