【英文标准名称】:StandardGuideforSamplingFluvialSedimentinMotion
【原文标准名称】:运动中河流泥沙抽样的标准指南
【标准号】:ASTMD4411-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:D19.07
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:fluvialsediment;samplercalibration;samplers;sedimentdischarge;sedimenttransport;Pointintegrationsampling;Samplercalibration;Samplingwateranalysisapplications;Sedimentdischarge/transport;Sedimentsampling;Waterbornesediment;Area
【摘要】:Thisguideisgeneralandisintendedasaplanningguide.Tosatisfactorilysampleaspecificsite,aninvestigatormustsometimesdesignnewsamplingequipmentormodifyexistingequipment.Becauseofthedynamicnatureofthetransportprocess,theextenttowhichcharacteristicssuchasmassconcentrationandparticle-sizedistributionareaccuratelyrepresentedinsamplesdependsuponthemethodofcollection.Sedimentdischargeishighlyvariablebothintimeandspacesonumeroussamplesproperlycollectedwithcorrectlydesignedequipmentarenecessarytoprovidedatafordischargecalculations.Generalpropertiesofbothtemporalandspatialvariationsarediscussed.1.1Thisguidecoverstheequipmentandbasicproceduresforsamplingtodeterminedischargeofsedimenttransportedbymovingliquids.Equipmentandprocedureswereoriginallydevelopedtosamplemineralsedimentstransportedbyriversbuttheyareapplicabletosamplingavarietyofsedimentstransportedinopenchannelsorclosedconduits.Proceduresdonotapplytosedimentstransportedbyflotation.1.2Thisguidedoesnotpertaindirectlytosamplingtodeterminenondischarge-weightedconcentrations,whichinspecialinstancesareofinterest.However,muchofthedescriptiveinformationonsamplerrequirementsandsedimenttransportphenomenaisapplicableinsamplingfortheseconcentrations,and9.2.8and13.1.3brieflyspecifysuitableequipment.Additionalinformationonthissubjectwillbeaddedinthefuture.1.3Thecitedreferencesarenotcompiledasstandards;howevertheydocontaininformationthathelpsensurestandarddesignofequipmentandprocedures.1.4Informationgiveninthisguideonsamplingtodeterminebedloaddischargeissolelydescriptivebecausenospecificsamplingequipmentorproceduresarepresentlyacceptedasrepresentativeofthestate-of-the-art.Asthissituationchanges,detailswillbeaddedtothisguide.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection12.
【中国标准分类号】:Z12
【国际标准分类号】:
【页数】:18P.;A4
【正文语种】:英语


【英文标准名称】:Wroughtaluminiumandaluminiumalloytubes;Technicaldeliveryconditions
【原文标准名称】:铝和铝塑性合金管.交货技术条件
【标准号】:DIN1746T.2-1983
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】: