SJ 1168-77 阴极射线荧光粉 Ｙ１２荧光粉
时间:2024-05-25 00:35:43 来源: 标准资料网 作者：标准资料网 阅读：8013
基本信息
| 标准名称： | 阴极射线荧光粉 Ｙ１２荧光粉 |
| 英文名称： | Phosphor Y12 |
| 中标分类： |
综合 >>
标准化管理与一般规定 >>
技术管理 |
| 发布日期： | 1977-01-01 |
| 实施日期： | 1977-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 4页 |
适用范围
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前言
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引用标准
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所属分类： 综合 标准化管理与一般规定 技术管理
【英文标准名称】:Applicationoffiresafetyengineeringprinciplestothedesignofbuildings-Codeofpractice
【原文标准名称】:在建筑物设计中防火安全性工程原则的应用.实施规程
【标准号】:BS7974-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-10-24
【实施或试行日期】:2001-10-24
【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】:建筑物火警疏散设施;建筑防灾;防止火灾扩散;建筑物防火;火灾危险;火灾警报;设计;火灾探测器;防火安全;建筑物;防火耐火结构;风险评定;安全工程;环境工程
【英文主题词】:Buildings;Design;Environmentalengineering;Firealarms;Firedetectors;Firerisks;Firesafety;Firesafetyinbuildings;Firespreadprevention;Hazardpreventioninbuildings;Meansofescapefromfireinbuildings;Riskassessment;Safetyengineering;Structuralfireprotection
【摘要】:Thiscodeofpracticeprovidesaframeworkforanengineeringapproachtotheachievementoffiresafetyinbuildingsbygivingrecommendationsandguidanceontheapplicationofscientificandengineeringprinciplestotheprotectionofpeople,propertyandtheenvironmentfromfire.Thiscodeofpracticeappliestothedesignofnewbuildingsandtheappraisalofexistingbuildings.Thiscodeofpracticedoesnotprovidespecificguidanceonbuildingsusedforthebulkstorageorprocessingofflammableliquidsorexplosivematerials.Theintrinsicrisksassociatedwithsuchbuildingswilloftennecessitatespecialconsideration,whichisbeyondthescopeofthisdocument.
【中国标准分类号】:P31
【国际标准分类号】:13_220_20;91_040_01
【页数】:34P.;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforSamplingForestTreesforDeterminationofClearWoodProperties
【原文标准名称】:测定无疵病木材性能用林森书面的标准抽样规范
【标准号】:ASTMD5536-1994(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:1994
【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】:D07.08
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:clearwood;forest;foresttrees;sampling;Timber;Trees;Clearwoodevaluation/testing;Cruciformsampling;Forestland;Randomsampling;Samplingwoodproducts
【摘要】:Thispracticecoversproceduresofsamplingforobtainingsmallclearwoodspecimenswhich,whentestedinaccordancewithMethodsD143and,inconjunctionwithfull-sizeproducttests,willprovidemechanicalpropertiesforuseinderivingdesignpropertiesforlumber,panels,poles,houselogs,andotherproducts.Dataobtainedbytestingspecimenssampledinaccordancewiththesemethodsalsoprovideinformationontheinfluenceonmechanicalpropertiesofsuchfactorsasdensity,localityofgrowth,positionincrosssection,heightinthetree,andmoisturecontent.Cruciformsamplingisofprincipalvaluewheninformationisdesiredontheinfluenceonmechanicalpropertiesofheightinthetree;ofageorradialpositioninthetree;ofrateofgrowth;thechangefromsapwoodtoheartwood;therelationshipsbetweenmechanicalpropertiesandfactorssuchasspecificgravity;andmakinggeneralcomparisonsbetweenspeciesforpurposesofratingorselectingspeciesforspecificend-useproducts.Cruciformsamplingdoesnotprovideunbiasedestimatesofmeanvalues,percentileorotherdescriptivestatistics,orameansofassociatingstatisticalconfidencewithestimatesofdescriptivestatistics.Doublesamplingisusedwhenitisdesiredtoimproveorupdateexistingestimatesofmechanicalpropertyvaluesthatarethebasisforestablishingallowabledesignstressesforstress-gradedlumber,plywood,polesandpiling,andotherwoodproducts.Themethodinvolvespredictingonepropertybycarefullyobservingawell-correlatedauxiliarypropertythatispresumablyeasierorcheapertomeasure.Asampleestimateoftheauxiliarypropertyisobtainedwithahighdegreeofprecisionbyrepresentativelysamplingthepopulation.Asmallerindependentsampleorasubsampleofthelargesampleisusedtoestablisharelationshipbetweentheauxiliarypropertyandthepropertyforwhichanestimateisdesired.Asappliedtosamplingaforest,doublesamplinghasemployedspecificgravitytopredictmechanicalproperties.Thedouble-samplingmethodprovidesunbiasedestimatesofmeanmechanicalpropertyvaluesandanapproximationmethodforestimatingpercentilevalues.Statisticalconfidencemaybeassociatedwiththeestimatesofthemeansbutnotthepercentilevalues.Randomsamplingisusedwhenprobabilityestimatesofdescriptivestatisticsandpropertydistributionalcharacteristicsaredesiredasthebasisforestablishingallowabledesignstressesforlumberandotherstress-ratedproducts.Itisapplicablewhendataforaspeciesdonotexistorwhenexistingestimatesarebelievednolongerapplicablebecauseofachangingforestcharacter.Randomsamplingprovidesbetterprobabilityestimatesthandoublesamplingandislessexpensiveandquickerifsamplingandtestingmustbecompletedtoestablishmechanicalproperty-specificgravityregressionsforthedouble-samplingmethod.1.1Thispracticeofferstwoalternativephysicalsamplingprocedures:cruciformsamplingandrandomsampling.Thechoiceofprocedurewilldependupontheintendeduseforthetestresults,theresourcesavailableforsamplingandtesting,andtheavailabilityofexistingdataonthemechanicalpropertiesandspecificgravityofthespeciesofinterest.1.2Athirdprocedure,doublesampling,isincludedprimarilybyreference.Thisprocedureappliestheresultsofcruciformorrandomsamplesthroughcorrelationtoimproveorupdatepropertyvalues.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B69
【国际标准分类号】:
【页数】:9P.;A4
【正文语种】:英语