ASTM D 6452-1999 用于地下水质调查的井的净化方法的标准指南
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【英文标准名称】:StandardGuideforPurgingMethodsforWellsUsedforGround-WaterQualityInvestigations
【原文标准名称】:用于地下水质调查的井的净化方法的标准指南
【标准号】:ASTMD6452-1999
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:水质;地下水;净化;指数剂参数;地下水取样
【英文主题词】:groundwater;waterquality;ground-watersampling;indicatorparameters;purging
【摘要】:
【中国标准分类号】:Z16
【国际标准分类号】:13_060_10
【页数】:6P;A4
【正文语种】:英语
【原文标准名称】:用于地下水质调查的井的净化方法的标准指南
【标准号】:ASTMD6452-1999
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:水质;地下水;净化;指数剂参数;地下水取样
【英文主题词】:groundwater;waterquality;ground-watersampling;indicatorparameters;purging
【摘要】:
【中国标准分类号】:Z16
【国际标准分类号】:13_060_10
【页数】:6P;A4
【正文语种】:英语
下载地址: 点击此处下载
【英文标准名称】:InformationTechnology-KeyboardLayoutsforTextandOfficeSystems-Part4:NumericSection
【原文标准名称】:信息技术.文本和办公系统键盘布局.第4部分:数字部分
【标准号】:ANSI/INCITS/ISO/IEC9995-4-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:键盘;办公室设备;数据系统工程;信息技术
【英文主题词】:Dataprocessing;Dataprocessingequipment;Datasystemsengineering;Informationtechnology;Keyboards;Keys;Keys(keyboards);Layout;Numericcharactersets;Officeequipment;Officemachines;Position;Specifications;Typewriters
【摘要】:Specifiesthenumericsectionofakeyboardandthedivisionofthatsectionintozones.Specifiesthearrangement,thenumber,andthelocationofthekeysinthenumericzoneandinthefunctionzonesofthenumericsection,aswellastheallocationoffunctionstothekeys.
【中国标准分类号】:L63
【国际标准分类号】:35_180;35_260
【页数】:
【正文语种】:英语
【英文标准名称】:Evaluationandroutinetestinginmedicalimagingdepartments-Part3-2:Acceptancetests-ImagingperformanceofmammographicX-rayequipment
【原文标准名称】:医用成像部门的评估及例行测试.第3-2部分:验收试验.乳腺摄影X射线设备的成像性能
【标准号】:IEC61223-3-2-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-07
【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/SC62B
【标准类型】:()
【标准水平】:()
【中文主题词】:验收(鉴定);验收检验;验收试验;自动曝光系统;盒式磁带;稳定性测试;定义;交货条件;剂量;电气工程;电医学;曝光;图像质量;成像;记录单;乳腺X射线摄影术;医疗放射照相术;医学放射学;医学科学;医疗技术学;性能试验;放射剂量;放射防护;射线照片;射线照相术;放射医学;额定值;安全;安全工程;试件;试样;测试;测试条件;测试装置;外观检查(试验);X射线;X射线仪;X射线电子管
【英文主题词】:Acceptance(approval);Acceptanceinspection;Acceptancetests;Automaticexposuresystems;Cassettes;Constancytesting;Definitions;Deliveryconditions;Dose;Efficiency;Electricalengineering;Electromedicine;Equipmentsafety;Exposure;Imagequality;Imaging;Logsheets;Mammography;Medicalradiography;Medicalradiology;Medicalsciences;Medicaltechnology;Performancetests;Radiationdose;Radiationprotection;Radiographs;Radiography;Radiology;Ratings;Safety;Safetyengineering;Testpieces;Testspecimens;Testing;Testingconditions;Testingdevices;Visualinspection(testing);X-ray;X-rayapparatus;X-raytubes
【摘要】:ThispartofIEC61223appliestotheeffectivenessofmammographicX-RAYEQUIPMENT,withrespecttoimagequalityanddose,incombinationwithaspectsofEQUIPMENTsafety.ThisstandardappliestomammographicX-RAYEQUIPMENTandMAMMOGRAPHICSTEREOTACTICDEVICES.ThetestsdescribedinthisstandardrequirethequalityandperformanceoftheX-RAYIMAGERECEPTORStobeassuredpriortotheacceptancetestingwhentheyarenotanintegralpartofthemammographicX-RAYEQUIPMENT.ThisincludesRADIOGRAPHICFILMS,INTENSIFYINGSCREENS,RADIOGRAPHICCASSETTES,storagephosphorplatesandASSOCIATEDEQUIPMENTsuchasfilmprocessorsorstoragephosphorplatereaders,IMAGEDISPLAYDEVICESandHARDCOPYCAMERAS.FortestingRADIOGRAPHICCASSETTESandINTENSIFYINGSCREENS,thisstandardmakesreferencetoISO4090.Sensitivityandcontrastforthescreen-filmimagereceptorsareconsideredtobestatedaccordingtoISO9236-3.NOTECurrentlythereexistsnoIECstandardforacceptancetestingofHARDCOPYCAMERASorIMAGEDISPLAYDEVICES.Bythemeasurementsdescribedinthisstandard,dataforAVERAGEGLANDULARDOSEcalculationcanbedetermined.WhentheresultsoftheACCEPTANCETESTareincompliancewiththeexpectedvalues,thebaselinevaluesforthesubsequentCONSTANCYTESTSareestablished.ThispartofIEC61223definesa)theessentialparameterswhichdescribetheperformanceoftheabove-mentionedmammographicX-RAYEQUIPMENTwithregardtoimagequalityanddose;andb)themethodsoftestingwhethermeasuredquantitiesrelatedtothoseparameterscomplywithspecifiedtolerances.Thesemethodsmainlyrelyonnon-invasivemeasurementsthatuseappropriatetestEQUIPMENTandareperformedduringoraftertheinstallation.SignedstatementscoveringstepsintheinstallationprocedurecanbeusedaspartoftheACCEPTANCETEST.Testsrequiredbyahigherlevelofcompliancetakeprecedenceoversimilartestswithalowerlevelofcompliance.Thisconceptisdescribedin4.1.Thisstandarddoesnotinitselfspecifylimitingvaluesortolerancesfortheparametersunderinvestigation.Adifficultymayarisewithregardtotheresponsibilityforacceptancetestingwhenthefilm/screencombination,filmprocessingchemistryorcomputedradiographysystemischanged.Thisarisesfromacombinationofcauses.Firstly,theimagereceptorMANUFACTURERandtheX-RAYEQUIPMENTMANUFACTURERmaybedifferent.Secondlyachangeinimagereceptororfilmprocessingchemistrymayalterthesystemperformance.Whensystemintegrationsuchastheaboveoccurs,itisimportantthatacceptancetestingisperformed.Whenachangeoccurswhichcouldaltersystemperformance,itisessentialthatthesystemintegrator(i.e.whoeverisresponsibleforthischange)discussestheimplicationoftheirchangewiththeX-RAYEQUIPMENTMANUFACTURERsothatthelattercanadjusttheimagingsystemifnecessary.ACCEPTANCETESTINGofmammographicX-RAYEQUIPMENTrequiresaverageskillinmedicalphysics.However,thedecisionconcerningwhoperformsthetestisdeterminedbylocalrules(e.g.contract,regulation,law).
【中国标准分类号】:C43
【国际标准分类号】:11_040_50
【页数】:125P;A4
【正文语种】:英语
【原文标准名称】:信息技术.文本和办公系统键盘布局.第4部分:数字部分
【标准号】:ANSI/INCITS/ISO/IEC9995-4-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:键盘;办公室设备;数据系统工程;信息技术
【英文主题词】:Dataprocessing;Dataprocessingequipment;Datasystemsengineering;Informationtechnology;Keyboards;Keys;Keys(keyboards);Layout;Numericcharactersets;Officeequipment;Officemachines;Position;Specifications;Typewriters
【摘要】:Specifiesthenumericsectionofakeyboardandthedivisionofthatsectionintozones.Specifiesthearrangement,thenumber,andthelocationofthekeysinthenumericzoneandinthefunctionzonesofthenumericsection,aswellastheallocationoffunctionstothekeys.
【中国标准分类号】:L63
【国际标准分类号】:35_180;35_260
【页数】:
【正文语种】:英语
【英文标准名称】:Evaluationandroutinetestinginmedicalimagingdepartments-Part3-2:Acceptancetests-ImagingperformanceofmammographicX-rayequipment
【原文标准名称】:医用成像部门的评估及例行测试.第3-2部分:验收试验.乳腺摄影X射线设备的成像性能
【标准号】:IEC61223-3-2-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-07
【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/SC62B
【标准类型】:()
【标准水平】:()
【中文主题词】:验收(鉴定);验收检验;验收试验;自动曝光系统;盒式磁带;稳定性测试;定义;交货条件;剂量;电气工程;电医学;曝光;图像质量;成像;记录单;乳腺X射线摄影术;医疗放射照相术;医学放射学;医学科学;医疗技术学;性能试验;放射剂量;放射防护;射线照片;射线照相术;放射医学;额定值;安全;安全工程;试件;试样;测试;测试条件;测试装置;外观检查(试验);X射线;X射线仪;X射线电子管
【英文主题词】:Acceptance(approval);Acceptanceinspection;Acceptancetests;Automaticexposuresystems;Cassettes;Constancytesting;Definitions;Deliveryconditions;Dose;Efficiency;Electricalengineering;Electromedicine;Equipmentsafety;Exposure;Imagequality;Imaging;Logsheets;Mammography;Medicalradiography;Medicalradiology;Medicalsciences;Medicaltechnology;Performancetests;Radiationdose;Radiationprotection;Radiographs;Radiography;Radiology;Ratings;Safety;Safetyengineering;Testpieces;Testspecimens;Testing;Testingconditions;Testingdevices;Visualinspection(testing);X-ray;X-rayapparatus;X-raytubes
【摘要】:ThispartofIEC61223appliestotheeffectivenessofmammographicX-RAYEQUIPMENT,withrespecttoimagequalityanddose,incombinationwithaspectsofEQUIPMENTsafety.ThisstandardappliestomammographicX-RAYEQUIPMENTandMAMMOGRAPHICSTEREOTACTICDEVICES.ThetestsdescribedinthisstandardrequirethequalityandperformanceoftheX-RAYIMAGERECEPTORStobeassuredpriortotheacceptancetestingwhentheyarenotanintegralpartofthemammographicX-RAYEQUIPMENT.ThisincludesRADIOGRAPHICFILMS,INTENSIFYINGSCREENS,RADIOGRAPHICCASSETTES,storagephosphorplatesandASSOCIATEDEQUIPMENTsuchasfilmprocessorsorstoragephosphorplatereaders,IMAGEDISPLAYDEVICESandHARDCOPYCAMERAS.FortestingRADIOGRAPHICCASSETTESandINTENSIFYINGSCREENS,thisstandardmakesreferencetoISO4090.Sensitivityandcontrastforthescreen-filmimagereceptorsareconsideredtobestatedaccordingtoISO9236-3.NOTECurrentlythereexistsnoIECstandardforacceptancetestingofHARDCOPYCAMERASorIMAGEDISPLAYDEVICES.Bythemeasurementsdescribedinthisstandard,dataforAVERAGEGLANDULARDOSEcalculationcanbedetermined.WhentheresultsoftheACCEPTANCETESTareincompliancewiththeexpectedvalues,thebaselinevaluesforthesubsequentCONSTANCYTESTSareestablished.ThispartofIEC61223definesa)theessentialparameterswhichdescribetheperformanceoftheabove-mentionedmammographicX-RAYEQUIPMENTwithregardtoimagequalityanddose;andb)themethodsoftestingwhethermeasuredquantitiesrelatedtothoseparameterscomplywithspecifiedtolerances.Thesemethodsmainlyrelyonnon-invasivemeasurementsthatuseappropriatetestEQUIPMENTandareperformedduringoraftertheinstallation.SignedstatementscoveringstepsintheinstallationprocedurecanbeusedaspartoftheACCEPTANCETEST.Testsrequiredbyahigherlevelofcompliancetakeprecedenceoversimilartestswithalowerlevelofcompliance.Thisconceptisdescribedin4.1.Thisstandarddoesnotinitselfspecifylimitingvaluesortolerancesfortheparametersunderinvestigation.Adifficultymayarisewithregardtotheresponsibilityforacceptancetestingwhenthefilm/screencombination,filmprocessingchemistryorcomputedradiographysystemischanged.Thisarisesfromacombinationofcauses.Firstly,theimagereceptorMANUFACTURERandtheX-RAYEQUIPMENTMANUFACTURERmaybedifferent.Secondlyachangeinimagereceptororfilmprocessingchemistrymayalterthesystemperformance.Whensystemintegrationsuchastheaboveoccurs,itisimportantthatacceptancetestingisperformed.Whenachangeoccurswhichcouldaltersystemperformance,itisessentialthatthesystemintegrator(i.e.whoeverisresponsibleforthischange)discussestheimplicationoftheirchangewiththeX-RAYEQUIPMENTMANUFACTURERsothatthelattercanadjusttheimagingsystemifnecessary.ACCEPTANCETESTINGofmammographicX-RAYEQUIPMENTrequiresaverageskillinmedicalphysics.However,thedecisionconcerningwhoperformsthetestisdeterminedbylocalrules(e.g.contract,regulation,law).
【中国标准分类号】:C43
【国际标准分类号】:11_040_50
【页数】:125P;A4
【正文语种】:英语