YS/T 254.6-1994 铍精矿-绿柱石化学分析方法 原子吸收分光光度法测定氧化钙量
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基本信息
| 标准名称： | 铍精矿-绿柱石化学分析方法 原子吸收分光光度法测定氧化钙量 |
| 英文名称： | Methods for chemical analysis of beryllium concentrates-beryl The atomic absorption spectrophotometric method for the determination of calcium oxide content |
| 中标分类： |
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| ICS分类： |
采矿和矿产品 >>
金属矿 >>
其他金属矿
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| 替代情况： | 原标准号GB/T 5870.6-1986;被YS/T 254.6-2011代替 |
| 发布日期： | |
| 实施日期： | 1993-04-01 |
| 首发日期： | |
| 作废日期： | 2012-07-01 |
| 出版日期： | |
| 页数： | 5页 |
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所属分类： 采矿和矿产品 金属矿 其他金属矿
【英文标准名称】:Overvoltageprotectionforphotovoltaic(PV)powergeneratingsystems-Guide
【原文标准名称】:光电功率发生系统过压保护导则
【标准号】:BSEN61173-1995
【标准状态】:现行
【国别】:英国
【发布日期】:1995-04-15
【实施或试行日期】:1995-04-15
【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】:直接能量转换;发电;电气保护设备;光电池;避雷装置;电路;过电压保护装置;光电电池;接地;电力系统;太阳能电池;光伏电池;电气安全
【英文主题词】:Braidshieldings;Currents;Cutoffvoltage;Earthing;Electricpowergeneration;Electricalengineering;Energy;Energysupplysystems(buildings);Guidebooks;Immunityfrominterference;Overvoltage;Overvoltageprotection;Photovoltaics;Protectiondevices;Silicon;Solarpower;Surgearresters;Temperature;Voltage
【摘要】:Givesguidanceontheprotectionofphotovoltaicstand-aloneandgrid-connectedpowergeneratingsystems.Identifiessourcesofovervoltagehazard,includinglightningandidentifiesthevarioustypesofprotection.
【中国标准分类号】:L50
【国际标准分类号】:29_120_50
【页数】:20P;A4
【正文语种】:英语
【英文标准名称】:StandardGuideforConceptualizationandCharacterizationofGround-WaterSystems
【原文标准名称】:地下水系统概念化和特性化的标准指南
【标准号】:ASTMD5979-1996(2002)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:D18.21
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:characterization;conceptualization;groundwater;ground-watermodeling;ground-watersystems;
【摘要】:1.1Thisguidecoversanintegrated,stepwisemethodforthequalitativeconceptualizationandquantitativecharacterizationofground-waterflowsystems,includingtheunsaturatedzone,fornaturalorhuman-inducedbehaviororchanges.1.2Thisguidemaybeusedatanyscaleofinvestigation,includingsite-specific,subregional,andregionalapplications.1.3Thisguidedescribesaniterativeprocessfordevelopingmultipleworkinghypothesesforcharacterizingground-waterflowsystems.Thisprocessaimsatreducinguncertaintywithrespecttoconceptualmodels,observation,interpretation,andanalysisintermsofhypothesisandrefinementofthemostlikelyconceptualmodeloftheground-waterflowsystem.Theprocessisalsoaimedatreducingtherangeofrealisticvaluesforparametersidentifiedduringthecharacterizationprocess.Thisguidedoesnotaddressthequantitativeuncertaintyassociatedwithspecificmethodsofhydrogeologicandground-watersystemcharacterizationandquantification,forexample,theeffectsofwellconstructiononwater-levelmeasurement.1.4Thisguideaddressesthegeneralprocedure,typesofdataneeded,andreferencesthatenabletheinvestigatortocompletetheprocessofanalysisandinterpretationofeachdatatypewithrespecttogeohydrologicprocessesandhydrogeologicframework.Thisguiderecommendsthegroupsofdataandanalysistobeusedduringeachstepoftheconceptualizationprocess.1.5Thisguidedoesnotaddressthespecificmethodsforcharacterizinghydrogeologicandground-watersystemproperties.1.6Thisguidedoesnotaddressmodelselection,design,orattributionforuseintheprocessofground-waterflowsystemcharacterizationandquantification.Thisguidedoesnotaddresstheprocessofmodelschematization,includingthesimplificationofhydrologicsystemsandtherepresentationofhydrogeologicparametersinmodels.1.7Thisguidedoesnotaddressspecialconsiderationsrequiredforcharacterizationofkarstandfracturedrockterrain.Insuchhydrogeologicsettings,refertoQuinlan(1)andGuideD5717foradditionalguidance.1.8Thisguidedoesnotaddressspecialconsiderationsregardingthesource,fate,andmovementofchemicalsinthesubsurface.1.9Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.10Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationofaproject'smanyuniqueaspects.Theword"Standard"inthetitleofthisdocumentmeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.
【中国标准分类号】:D04
【国际标准分类号】:13_060_10
【页数】:7P.;A4
【正文语种】: