MIL-HDBK-108
作者:标准资料网 时间:2024-05-13 02:02:13 浏览:8503
来源:标准资料网
This handbook (interim) was developed by the Bureau of Naval E=Weapons, Department of the Navy on behalf of the Office of the Assistant Secretary of Defense (Supply/Logistics). It was prepared to meet a growing need for the use of standard sampling plans for life and reliability testing.
【英文标准名称】:Fertilizers.Chemicalanalysis.Determinationofphosphorus.Extractionofwater-solublephosphates
【原文标准名称】:肥料.第4部分:化学分析.第2节:磷的测定.第1小节:水溶磷酸盐的萃取
【标准号】:BS5551SubSec.4.2.1-1978
【标准状态】:作废
【国别】:英国
【发布日期】:1978-01-31
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:肥料;磷;五氧化二磷;农用化学制品;土壤改良;化学分析和试验;含量测定;试验条件;水解萃取法
【英文主题词】:agriculturalchemicals;aqueousextractionmethods;soilimprovement;testingconditions;chemicalanalysisandtesting;phosphoruspentoxide;phosphorus;fertilizers;determinationofcontent
【摘要】:
【中国标准分类号】:G20
【国际标准分类号】:
【页数】:4P;A4
【正文语种】:英语
【英文标准名称】:Practiceforuseofadichromatedosimetrysystem
【原文标准名称】:重铬酸盐剂量测定系统的使用规程
【标准号】:ISO/ASTM51401-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-07-15
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC85
【标准类型】:()
【标准水平】:()
【中文主题词】:辐照剂量;辐射测量;γ辐射;电子束;剂量测定;重铬酸盐;核辐射;X射线;电离辐射;定义
【英文主题词】:radiationdose;definitions;radiationmeasurement;gamma-radiation;dichromates;nuclearradiation;electronbeams;ionizingradiation;definition;dosimetry;x-rays
【摘要】:1Thispracticecoversthepreparation,testing,andproce-dureforusingtheacidicaqueoussilverdichromatedosimetrysystemtomeasureabsorbeddoseinwaterwhenexposedtoionizingradiation.Thesystemconsistsofadosimeterandappropriateanalyticalinstrumentation.Forsimplicity,thesys-temwillbereferredtoasthedichromatesystem.Itisclassifiedasareferencestandarddosimetrysystem(seeISO/ASTMGuide51261).2Thispracticedescribesthespectrophotometricanalysisproceduresforthedichromatesystem.3Thispracticeappliesonlytoγ-rays,x-rays/bremsstrahlung,andhighenergyelectrons.4Thispracticeappliesprovidedthefollowingconditionsaresatisfied:4.1Theabsorbeddoserangeisfrom2×10to5×10Gy.4.2Theabsorbeddoseratedoesnotexceed600Gy/pulse(12.5pulsespersecond),ordoesnotexceedanequivalentdoserateof7.5kGy/sfromcontinuoussources(1).4.3Forradionuclidegamma-raysources,theinitialpho-tonenergyshallbegreaterthan0.6MeV.Forbremsstrahlungphotons,theinitialenergyoftheelectronsusedtoproducethebremsstrahlungphotonsshallbeequaltoorgreaterthan2MeV.Forelectronbeams,theinitialelectronenergyshallbegreaterthan8MeV.Note1—Thelowerenergylimitsgivenareappropriateforacylindri-caldosimeterampouleof12mmdiameter.Correctionsfordisplacementeffectsanddosegradientacrosstheampoulemayberequiredforelectronbeams(2).Thedichromatesystemmaybeusedatlowerenergiesbyemployingthinner(inthebeamdirection)dosimetercontainers(seeICRUReport35).4.4Theirradiationtemperatureofthedosimetershallbeabove0℃andshouldbebelow80℃.Note2—Thetemperaturecoefficientofdosimeterresponseisknownonlyintherangeof5°to50℃(see4.3).Useoutsidethisrangerequiresdeterminationofthetemperaturecoefficient.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Specificprecau-tionarystatementsaregivenin8.3.note:2Theboldfacenumbersinparenthesesrefertothebibliographyattheendofthispractice.
【中国标准分类号】:F80
【国际标准分类号】:17_240
【页数】:11P.;A4
【正文语种】:英语
