【英文标准名称】:StandardTestMethodforPoreSizeCharacteristicsofMembraneFiltersUsingAutomatedLiquidPorosimeter
【原文标准名称】:用自动液体孔率计检验薄膜过滤器的孔径特性的测试方法
【标准号】:ASTME1294-1989(1999)
【标准状态】:作废
【国别】:
【发布日期】:1989
【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】:E48.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;薄膜过滤器;孔隙率;测量
【英文主题词】:Automatedprocedures;Flowandflowrate-filters;Liquids-waste;Maximumporesize;Meanflowporesize;Membranefilters(MF)-watertesting;Minimumporesize;Poresizecharacteristics;poresizecharacteristicsofmembranefilters,usingauto
【摘要】:Thistestmethodmaybeusedtodeterminethemaximumporesize,minimumporesize,andmeanflowporesize.Theporesizedistributionsbyflow,number,andvolumecanbededucedfrompressureversusflowdata.1.1
【中国标准分类号】:J77
【国际标准分类号】:71_040_20
【页数】:2P.;A4
【正文语种】:
基本信息
| 标准名称： | 焊接性试验 搭接接头(CTS)焊接裂纹试验方法 |
| 英文名称： | Weldability testing;Method of controlled thermal severity cracking test |
| 中标分类： |
机械 >>
加工工艺 >>
焊接与切割 |
| ICS分类： |
机械制造 >>
焊接、钎焊和低温焊 >>
焊接接头
|
| 发布部门： | 国家标准局 |
| 发布日期： | 1984-07-28 |
| 实施日期： | 1985-05-01 |
| 首发日期： | 1984-07-28 |
| 作废日期： | 2005-10-14 |
| 主管部门： | 国家标准化管理委员会 |
| 归口单位： | 全国焊接标准化技术委员会 |
| 起草单位： | 哈尔滨焊接所 |
| 出版日期： | 1900-01-01 |
| 页数： | 6页 |
适用范围
本标准适用于低合金钢和碳素钢搭接接头焊接裂纹试验。
前言
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目录
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引用标准
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所属分类： 机械 加工工艺 焊接与切割 机械制造 焊接 钎焊和低温焊 焊接接头
【英文标准名称】:StandardGuideforAssessingtheHazardofaMaterialtoAquaticOrganismsandTheirUses
【原文标准名称】:评定材料对水生生物及其使用中存在的危险性的标准指南
【标准号】:ASTME1023-1984(2007)
【标准状态】:现行
【国别】:
【发布日期】:1984
【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】:E47.04
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:危险物质;试验;污染控制
【英文主题词】:biological;chemical;environment;toxicological;measuring;estimate;hazard
【摘要】:Adverseeffectsonnaturalpopulationsofaquaticorganismsandtheiruseshavedemonstratedtheneedtoassessthehazardsofmanynew,andsomepresentlyused,materials.Theprocessdescribedhereinwillhelpproducers,users,regulatoryagencies,andotherstoefficientlyandadequatelycomparealternativematerials,completelyassessafinalcandidatematerial,orreassessthehazardofamaterialalreadyinuse.Sequentialassessmentandfeedbackallowappropriatejudgmentsconcerningefficientuseofresources,therebyminimizingunnecessarytestingandfocusingeffortontheinformationmostpertinenttoeachmaterial.Fordifferentmaterialsandsituations,assessmentofhazardwillappropriatelybebasedonsubstantiallydifferentamountsandkindsofbiological,chemical,physical,andtoxicologicaldata.Assessmentofthehazardofamaterialtoaquaticorganismsandtheirusesshouldneverbeconsideredcompleteforalltime.Reassessmentshouldbeconsiderediftheamountofproduction,use,ordisposalincreases,newusesarediscovered,ornewinformationonbiological,chemical,physical,ortoxicologicalpropertiesbecomesavailable.Periodicreviewwillhelpassurethatnewcircumstancesandinformationreceivepromptappropriateattention.Ifthereissubstantialtransformationtoanothermaterial,thehazardofbothmaterialsmayneedtobeassessed.Inmanycases,considerationofadverseeffectsshouldnotendwithcompletionofthehazardassessment.Additionalstepsshouldoftenincluderiskassessment,decisionsconcerningacceptabilityofidentifiedhazardsandrisks,andmitigativeactions.Becausethispracticedealsmostlywithadverseeffectsonaquaticorganismsandtheiruses,itisimportantthatmitigativeactions,suchasimprovedtreatmentofaqueouseffluents,notresultinunacceptableeffectsonnon-aquaticorganisms.Thus,thisstandardshouldbeusedwithotherinformationinordertoassesshazardtobothaquaticandnon-aquaticorganisms.1.1Thisguidedescribesastepwiseprocessforusinginformationconcerningthebiological,chemical,physical,andtoxicologicalpropertiesofamaterialtoidentifyadverseeffectslikelytooccurtoaquaticorganismsandtheirusesasaresultofreleaseofthematerialtotheenvironment.Thematerialwillusuallybeaspecificchemical,althoughitmightbeagroupofchemicalsthathaveverysimilarbiological,chemical,physical,andtoxicologicalpropertiesandareusuallyproduced,used,anddiscardedtogether.1.2Thehazardassessmentprocessiscomplexandrequiresdecisionsatanumberofpoints;thus,thevalidityofahazardassessmentdependsonthesoundnessofthosedecisions,aswellastheaccuracyoftheinformationused.Alldecisionsshouldbebasedonreasonableworst-caseanalysessothatanappropriateassessmentcanbecompletedfortheleastcostthatisconsistentwithscientificvalidity.1.3Thisguideassumesthatthereaderisknowledgeableinaquatictoxicologyandrelatedpertinentareas.Alistofgeneralreferencesisprovided().1.4Thisguidedoesnotdescribeorreferencedetailedproceduresforestimatingormeasuringenvironmentalconcentrations,orproceduresfordeterminingthemaximumconcentrationoftestmaterialthatisacceptableinthefoodofpredatorsofaquaticlife.However,thisguidedoesdescribehowsuchinformationshouldbeusedwhenassessingthehazardofamaterialtoaquaticorganismsandtheiruses.1.5Becauseassessmentofhazardtoaquaticorganismsandtheirusesisarelativelynewactivitywithinaquatictoxicology,mostoftheguidanceprovidedhereinisqualitativeratherthanquantitative.Whenpossible,confidencelimitsshouldbecalculatedandtakenintoaccount.1.6Thisguideprovidesguidanceforassess......
【中国标准分类号】:Z04
【国际标准分类号】:07_100_20
【页数】:17P.;A4
【正文语种】: