MH/T 4006.4-1998 航空无线电导航设备 第4部分:无方向性信标(NDB)技术要求
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来源:标准资料网
基本信息
| 标准名称： | 航空无线电导航设备 第4部分:无方向性信标(NDB)技术要求 |
| 英文名称： | Aeronautical radio navigation aids Part 4:Technical requirements for non -- directional radio bescon(NDB) |
| 中标分类： |
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| ICS分类： |
电信、音频和视频技术 >>
遥控、遥测、遥感
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| 发布日期： | 1998-11-27 |
| 实施日期： | 1999-08-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 9页 |
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所属分类： 电信 音频和视频技术 遥控 遥测 遥感
【英文标准名称】:Environmentallabelsanddeclarations-TypeIIIenvironmentaldeclarations
【原文标准名称】:环境标志和声明III型环境声明
【标准号】:ISO/TR14025-2000
【标准状态】:作废
【国别】:国际
【发布日期】:2000-03
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC207
【标准类型】:()
【标准水平】:()
【中文主题词】:口述;抗污染;方法;技术通报;环境要求;基础;环境;污染控制;指导手册;作标记;虚线;产品信息;制造日期;定义;规范(验收)
【英文主题词】:
【摘要】:ThisTechnicalReportidentifiesanddescribeselementsandissuesconcerningTypeIIIenvironmentaldeclarationsandcorrespondingprogrammes,includingtechnicalconsiderations,declarationformatandcommunication,andadministrativeconsiderationsfordevelopingand/orissuingaTypeIIIenvironmentaldeclaration.
【中国标准分类号】:Z04
【国际标准分类号】:13_020_50
【页数】:25P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforFunctionalandWearEvaluationofMotion-PreservingLumbarTotalFacetProstheses
【原文标准名称】:活动腰椎全椎间盘假体的功能及磨损评定的标准实施规程
【标准号】:ASTMF2694-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:F04.25
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:评定;外科植入物;医疗技术学;运动;外科学;磨损
【英文主题词】:dynamictest;facetarthroplasty;posteriorinstrumentation;spinalimplants;statictest;wearassessment;weightlossmethod
【摘要】:TotalFacetProsthesisComponents8212;Thetotalfacetreplacementmaycompriseavarietyofshapesandconfigurations.Itsformsmayinclude,butarenotlimitedto,ballandsocketarticulatingjoints,jointshavingafree-floatingorsemi-constrainedthirdbody,metallicload-bearingsurfaces,andspringanddampeningmechanisms.Additionally,itmaybeaunilateralorbilateraldesign.SpinalTestingApparatus:TestChambers8212;Incaseofamultispecimenmachine,eachchambershallbeisolatedtopreventcross-contaminationofthetestspecimens.Thechambershallbemadeentirelyofcorrosionresistantmaterials,suchasacrylicplasticorstainlesssteel,andshallberemovablefromthemachineforthoroughcleaningbetweentests.ComponentClamping/Fixturing8212;Sincethepurposeofthetestistocharacterizethewearandkinematicfunctionofthetotalfacetprosthesis,themethodformountingcomponentsinthetestchambershallnotcompromisetheaccuracyofassessmentoftheweightlossorstiffnessvariationduringthetest.Forexample,prostheseshavingcomplicatedsuperiorandinferiorsurfacesforcontactingbone(forexample,sinteredbeads,hydroxylapatite(HA)coating,plasmaspray)maybespeciallymanufacturedtomodifythatsurfaceinamannerthatdoesnotaffectthewearsimulation.Thedeviceshouldbesecurely(rigidly)attachedatitsbone-implantinterfacetothematingtestfixtures.Themotionofthesuperiortestfixture(moreposteriorfixtureinFigs.1and2)relativetotheinferiortestingfixtureshallbeconstrainedinthree-dimensionalspaceexceptforthecomponentsinthedirectionofspecifiedtestmotions/loads.LoadandMotion:Facetloads(fx)areinitiallyappliedinthedirectionofthepositiveX-axis.FlexionloadandmotionarepositivemomentandrotationabouttheY-axis.ExtensionloadandmotionarenegativemomentandrotationabouttheY-axis.LateralbendloadandmotionarepositiveandnegativemomentsandrotationsabouttheX-axis.AxialrotationloadandmotionarepositiveandnegativemomentsandrotationsabouttheZ-axis.Frequency8212;Testfrequencyistobedeterminedandjustifiedbytheuserofthispractice,andshallnotexceed2Hzwithoutadequatejustificationensuringthattheappliedmotion(load)profilesremainwithinspecifiedtolerancesandthatthetotalfacetprosthesisx2019;swearandfunctionalcharacteristicsarenotsignificantlyaffected.SeeX1.6.CycleCounter8212;Onecompletemotionistheentirerangefromstartingpositionthroughtherangeofmotion(orloadwheninloadcontrol)andreturningtothestartingposition(load).Cyclesaretobecountedusinganautomatedcountingdevice.Note8212;Thissetupwouldrequiretworotationalactuatorsandonetranslationalactuator.FIG.1DiagramsofPossibleTestApparatusforAllowingSimultaneousLateralBendingandAxialRotationMotionswithAnterior-PosteriorDirectedFacetLoading
