ISO 8001-1984 电影需强力显影的曝光不足影片标识方法
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来源:标准资料网
【英文标准名称】:Cinematography;Underexposedmotion-picturefilmrequiringforceddevelopment;Designationmethod
【原文标准名称】:电影需强力显影的曝光不足影片标识方法
【标准号】:ISO8001-1984
【标准状态】:现行
【国别】:国际
【发布日期】:1984-11
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC36
【标准类型】:()
【标准水平】:()
【中文主题词】:名称与符号;显影;电影摄影;电影胶片;胶片损伤;影片
【英文主题词】:Cinematography;Definition;Definitions;Designations;Developing(photography);Developments;Filmdamages;Films;Magneticfilms;Marking;Motion-picturefilm
【摘要】:1ThisInternationalStandardspecifiesamethodofdesignatingunderexposedmotion-picturenegativeandrever-saltypefilmrequiringforcedorpush-processingdevelopment.2ThisInternationalStandarddoesnotspecifythepro-cedureusedinachievingaforceddevelopmentresult.NOTE—AnInternationalStandarddealingwithoverexposedmotion-picturefilmisbeingprepared.
【中国标准分类号】:A15
【国际标准分类号】:37_060_20
【页数】:1P;A4
【正文语种】:英语
【英文标准名称】:MedicaldiagnosticX-rayequipment-Radiationconditionsforuseinthedeterminationofcharacetristics
【原文标准名称】:医用诊断X射线设备.测定特性时使用的辐射条件
【标准号】:IEC61267-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-11
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC62C
【标准类型】:()
【标准水平】:()
【中文主题词】:特性;定义;测定;诊断;诊断设备;电气工程;电医学;医疗设备;医疗放射照相术;医学科学;医疗技术学;照射疗法;辐射;辐射防护;辐射学;X射线仪;X射线设备;X射线装置;X射线
【英文主题词】:Characteristics;Definitions;Determination;Diagnosis;Diagnosticequipment;Electricalengineering;Electromedicine;Irradiationcondition;Medicalequipment;Medicalradiography;Medicalsciences;Medicaltechnology;Phototherapy;Radiation;Radiationprotection;Radiology;X-rayapparatus;X-rayequipment;X-rayplants;X-rays
【摘要】:ThisInternationalStandardappliestotestprocedureswhich,forthedeterminationofcharacteristicsofsystemsorcomponentsofmedicaldiagnosticX-RAYEQUIPMENT,requirewell-definedRADIATIONCONDITIONS.Exceptformammography,thisstandarddoesnotapplytoconditionswherediscontinuitiesinradiationabsorptionofelementsaredeliberatelyusedtomodifypropertiesoftheRADIATIONBEAM(forexamplebyrareearthfilters).ThemostcompletespecificationofRADIATIONFIELDSisgivenbythespectraldistributionofthephotonfluence.SincethemeasurementofX-RAYSPECTRAisademandingtask,thisstandardexpressesRADIATIONQUALITIESintermsoftheX-RAYTUBEVOLTAGE,thefirstandsecondHALFVALUELAYER.InthecaseofRADIATIONCONDITIONS,specificationsareperformedadditionallyintermsofPHANTOMpropertiesandgeometry.TheattempttocharacterizeaspectraldistributionjustbymeansoftheX-RAYTUBEVOLTAGE,thefirstandpossiblythesecondHALF-VALUELAYERisthusacompromisebetweenthemutuallyconflictingrequirementsofavoidingexcessiveeffortsforestablishingaRADIATIONQUALITYandofthecompleteabsenceofanyambiguityinthedefinitionofaRADIATIONQUALITY.DuetodifferencesinthedesignandtheageofX-RAYTUBESintermsofanodeangle,anoderougheningandINHERENTFILTRATION,twoRADIATIONQUALITIESproducedatagivenXRAYTUBEVOLTAGEhavingthesamefirstHALF-VALUELAYERcanstillhavequitedifferentspectraldistributions.GiventheinherentambiguityinthecharacterizationofRADIATIONQUALITY,itisessentialthatfurthertolerancesintroducedbyallowingcertainrangesofvalues,e.g.forX-RAYTUBEVOLTAGEandfirstHALF-VALUELAYER,mustbesufficientlysmallnottojeopardisetheunderlyingobjectiveofthisstandard.ThisstandardistoensurethatmeasurementsofthepropertiesofmedicaldiagnosticequipmentshouldproduceconsistentresultsifRADIATIONQUALITIESorRADIATIONCONDITIONSincompliancewiththisstandardareused.Toachievethisobjective,certaindegreesoffreedominthewayinwhichaRADIATIONCONDITIONcouldbeestablishedintheframeworkofthefirsteditionofthisstandardhavebeenremoved.TheessentialrestrictionintroducedinthissecondeditionisthattheX-RAYTUBEVOLTAGEismeasuredandsettoits'correct'value.ThesecondstepistoattempttoestablishtheprescribedfirstHALF-VALUELAYERbyaddingintothebeamthenecessaryamountofADDITIONALFILTRATION.IftheINHERENTFILTRATIONprovidedbytheX-RAYTUBEaloneissostrongthattheHALF-VALUELAYERoftheRADIATIONBEAMemergingfromtheX-RAYTUBEASSEMBLYassuchislargerthanthattobeestablished,theX-RAYTUBEASSEMBLYusedisnotsuitedforproducingthedesiredRADIATIONCONDITION.ThismayoccuriftheanodeangleoftheX-RAYTUBEASSEMBLYistoosmalland/orinthecaseofexcessiveanoderougheningduetotubeageing.IntheapproachoutlinedinthetwoprecedingparagraphstheX-RAYTUBEVOLTAGEplaysadecisiverole.Itisthereforeessentialthatthe‘correct’X-raytubevoltageischosenirrespectiveofthetypeofhighvoltagegeneratorconnectedtotheX-RAYTUBE.ThewayinwhichthisisrealizedinthisstandardisbymeasuringtheX-RAYTUBEVOLTAGEintermsofthePRACTICALPEAKVOLTAGE.ThisquantityisaweightedmeanofallvaluesoftheX-RAYTUBEVOLTAGEoccurringduringanexposure.TheweightingisdoneinsuchawaythatidenticalvaluesofthePRACTICALPEAKVOLTAGEgiveidenticalvaluesofthelowlevelcontrastonaradiographirrespectiveofthewaveformsuppliedbythegenerator.
【中国标准分类号】:C43
【国际标准分类号】:11_040_50
【页数】:94P.;A4
【正文语种】:英语
【英文标准名称】:Plywood-doors;concepts,prioritysizes,contructioncharacteristicsforinteriordoors
【原文标准名称】:防水门.概念.优先尺寸.内门的结构特征
【标准号】:DIN68706-1-1980
【标准状态】:作废
【国别】:德国
【发布日期】:1980-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:公差;住房建筑;潮气;内门;尺寸;木材;表面;门;定义;表面处理;含量测定;涡旋;稳定性(机械性能);材料;裂纹;薄板
【英文主题词】:housing;surfaces;dimensions;determinationofcontent;flaws;definitions;consistency(mechanicalproperty);vortices;moisture;materials;internaldoors;surfacetreatment;wood;tolerances(measurement);vene
【摘要】:
【中国标准分类号】:P32
【国际标准分类号】:91_060_50
【页数】:5P;A4
【正文语种】:德语
