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【英文标准名称】:StandardGuideforCollection,Storage,Characterization,andManipulationofSedimentsforToxicologicalTestingandforSelectionofSamplersUsedtoCollectBenthicInvertebrates
【原文标准名称】:用于收集底栖无脊椎动物取样器的选择和毒理测定用沉积物的收集,存储,表征和操作方法的标准指南
【标准号】:ASTME1391-2003(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】:E47.03
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:basketsamplers;benthicmacroinvertebrates;characterization;collection;interstitialwater;manipulation;multiplatesamplers;porewater;sediment;sedimentgrabsamplers;spiking;storage;streamnetsamplingdevices;toxicity;transport;Benthicmac
【摘要】:Sedimenttoxicityevaluationsareacriticalcomponentofenvironmentalqualityandecosystemimpactassessments,andareusedtomeetavarietyofresearchandregulatoryobjectives.Themannerinwhichthesedimentsarecollected,stored,characterized,andmanipulatedcaninfluencetheresultsofanysedimentqualityorprocessevaluationgreatly.Addressingthesevariablesinasystematicanduniformmannerwillaidtheinterpretationsofsedimenttoxicityorbioaccumulationresultsandmayallowcomparisonsbetweenstudies.Sedimentqualityassessmentisanimportantcomponentofwaterqualityprotection.Sedimentassessmentscommonlyincludephysicochemicalcharacterization,toxicitytestsorbioaccumulationtests,aswellasbenthiccommunityanalyses.Theuseofconsistentsedimentcollection,manipulation,andstoragemethodswillhelpprovidehighqualitysampleswithwhichaccuratedatacanbeobtainedforthenationalinventoryandforotherprogramstoprevent,remediate,andmanagecontaminatedsediment.Itisnowwidelyknownthatthemethodsusedinsamplecollection,transport,handling,storage,andmanipulationofsedimentsandinterstitialwaterscaninfluencethephysicochemicalpropertiesandtheresultsofchemical,toxicity,andbioaccumulationanalyses.Addressingthesevariablesinanappropriateandsystematicmannerwillprovidemoreaccuratesedimentqualitydataandfacilitatecomparisonsamongsedimentstudies.Thisstandardprovidescurrentinformationandrecommendationsforcollectingandhandlingsedimentsforphysicochemicalcharacterizationandbiologicaltesting,usingproceduresthataremostlikelytomaintaininsituconditions,mostaccuratelyrepresentthesedimentinquestion,orsatisfyparticularneeds,tohelpgenerateconsistent,highqualitydatacollection.Thisstandardisintendedtoprovidetechnicalsupporttothosewhodesignorperformsedimentqualitystudiesunderavarietyofregulatoryandnon-regulatoryprograms.Informationisprovidedconcerninggeneralsamplingdesignconsiderations,fieldandlaboratoryfacilitiesneeded,safety,samplingequipment,samplestorageandtransportprocedures,andsamplemanipulationissuescommontochemicalortoxicologicalanalyses.Informationcontainedinthisstandardreflectstheknowledgeandexperienceofseveralinternationally-knownsourcesincludingthePugetSoundEstuaryProgram(PSEP),WashingtonStateDepartmentofEcology(WDE),UnitedStatesEnvironmentalProtectionAgency(USEPA),USArmyCorpsofEngineers(USACE),NationalOceanicandAtmosphericAdministration(NOAA),andEnvironmentCanada.Thisstandardattemptstopresentacoherentsetofrecommendationsonfieldsamplingtechniquesandsedimentorinterstitialwatersampleprocessingbasedontheabovesources,aswellasextensiveinformationinthepeer-reviewedliterature.Asthescopeofthisstandardisbroad,itisimpossibletoadequatelypresentdetailedinformationoneveryaspectofsedimentsamplingandprocessingforallsituations.Norissuchdetailedguidancewarrantedbecausemuchofthisinformation(forexample,howtooperateaparticularsamplingdeviceorhowtouseaGeographicalPositioningSystem(GPS)device)alreadyexistsinotherpublishedmaterialsreferencedinthisstandard.Giventheaboveconstraints,thisstandard:(1)presentsadiscussionofactivitiesinvolvedinsedimentsamplingandsampleprocessing;(2)alertstheusertoimportantissuesthatshouldbeconsideredwithineachactivity;and(3)givesrecommendationsonhowtobestaddresstheissuesraisedsuchthatappropriatesamplesarecollectedandanalyzed.Anattemptismadetoalerttheusertodifferentconsiderationspertainingtosamplingandsampleprocessingdependingontheobjectivesofthestudy(forexample,remedi......
【中国标准分类号】:Z19
【国际标准分类号】:
【页数】:94P.;A4
【正文语种】:英语


【英文标准名称】:Magneticcoresforapplicationincoincidentcurrentmatrixstoreshavinganominalselectionratioof2:1andinlinearselectmemorystores
【原文标准名称】:具有标称选择比2:1的电流重合式矩阵存储器和线性选择存储器中应用的磁芯
【标准号】:IEC60281-1969
【标准状态】:作废
【国别】:国际
【发布日期】:1969
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC51
【标准类型】:()
【标准水平】:()
【中文主题词】:磁存储器;电流;磁芯;电气工程
【英文主题词】:electricalengineering;magneticstorage;electriccurrent;magneticcores
【摘要】:
【中国标准分类号】:L19
【国际标准分类号】:29_030;29_100_10
【页数】:29P;A4
【正文语种】:英语