EN ISO 7049-2011 十字槽平头自攻螺钉(ISO7049-2011);德文版本ENISO7049－2011
时间:2024-05-05 16:18:57 来源: 标准资料网 作者：标准资料网 阅读：9406
【英文标准名称】:Cross-recessedpanheadtappingscrews(ISO7049:2011);GermanversionENISO7049:2011
【原文标准名称】:十字槽平头自攻螺钉(ISO7049-2011);德文版本ENISO7049－2011
【标准号】:ENISO7049-2011
【标准状态】:现行
【国别】:
【发布日期】:2011-11
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Acceptancespecification;Crossrecessedscrews;Cruciform-headfasteners;Deliveryconditions;Designations;Dimensions;Fasteners;Headscrews;Materials;Panheadscrews;Properties;Raised-headfasteners;Recesses;Screws(bolts);Self-tappingscrews;Specification(approval);Surfaces;Threads;Tolerances(measurement)
【摘要】:
【中国标准分类号】:J13
【国际标准分类号】:21_060_10
【页数】:11P;A4
【正文语种】:英语
【英文标准名称】:StandardGuideforConductingTerrestrialPlantToxicityTests
【原文标准名称】:陆上植物毒性试验的标准指南
【标准号】:ASTME1963-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E47.02
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:Brassica;Inhibitorypotential(toxicchemicals);Planttissueanalysis;Qualityassurance(QA)--environmental;Rootelongation;Seedlingemergence;Terrestrialplanttoxicity;Terrestrialsystems;Toxicity/toxicology;Woodyplants
【摘要】:Terrestrialphytotoxicitytestsareusefulinassessingtheeffectsofenvironmentalsamplesorspecificchemicalsasapartofanecologicalriskassessment(3-6,12,13).Thoughinferencesregardinghigher-orderecologicaleffects(population,community,orlandscape)maybemadefromtheresults,thesetestsevaluateresponsesofindividualsofoneormoreplantspeciestothetestsubstance.Thisguideisapplicablefor:(a)establishingphytotoxicityoforganicandinorganicsubstances;(b)determiningthephytotoxicityofenvironmentalsamples;(c)determiningthephytotoxicityofsludgesandhazardouswastes,(d)assessingtheimpactofdischargeoftoxicantstoland,and(e)assessingtheeffectivenessofremediationefforts.1.1Thisguidecoverspracticesforconductingplanttoxicitytestsusingterrestrialplantspeciestodetermineeffectsoftestsubstancesonplantgrowthanddevelopment.Specifictestproceduresarepresentedinaccompanyingannexes.1.2Terrestrialplantsarevitalcomponentsofecologicallandscapes.Thepopulationsandcommunitiesofplantsinfluencethedistributionandabundanceofwildlife.Obviously,plantsarethecentralfocusofagriculture,forestry,andrangelands.Toxicitytestsconductedundertheguidelinesandannexespresentedhereincanprovidecriticalinformationregardingtheeffectsofchemicalsontheestablishmentandmaintenanceofterrestrialplantcommunities.1.3Toxicsubstancesthatpreventorreduceseedgerminationcanhaveimmediateandlargeimpactstocrops.Innaturalsystems,manydesiredspeciesmaybesensitive,whileotherspeciesaretolerant.Suchselectivepressurecanresultinchangesinspeciesdiversity,populationdynamics,andcommunitystructurethatmaybeconsideredundesirable.Similarly,toxicsubstancesmayimpairthegrowthanddevelopmentofseedlingsresultingindecreasedplantpopulations,decreasedcompetitiveabilities,reducedreproductivecapacity,andloweredcropyield.Forthepurposesofthisguide,testsubstancesincludepesticides,industrialchemicals,sludges,metalsormetalloids,andhazardouswastesthatcouldbeaddedtosoil.Italsoincludesenvironmentalsamplesthatmayhavehadanyofthesetestsubstancesincorporatedintosoil.1.4Terrestrialplantsrangefromannuals,capableofcompletingalife-cycleinaslittleasafewweeks,tolong-livedperennialsthatgrowandreproduceforseveralhundredsofyears.Procedurestoevaluatechemicaleffectsonplantsrangefromshort-termmeasuresofphysiologicalresponses(forexample,chlorophyllfluorescence)tofieldstudiesoftreesoverseveralyears.Researchanddevelopmentofstandardizedplanttestshaveemphasizedthreecategoriesoftests:(1)short-term,physiologicalendpoints(thatis,biomarkers);(2)short-termtestsconductedduringtheearlystagesofplantgrowthwithseveralendpointsrelatedtosurvival,growth,anddevelopment;and(3)life-cycletoxicityteststhatemphasizereproductivesuccess.1.5Thisguideisarrangedbysectionsasfollows:SectionTitle1
Scope
2
ReferencedDocuments
3
Terminology
4
Summaryo......
【中国标准分类号】:Z04
【国际标准分类号】:07_100_99
【页数】:21P.;A4
【正文语种】:英语
【英文标准名称】:Wastewatertreatmentplants-Rectangulartanks-Part1:Settlementtankswithsludgescraper,suctiontypesludgeremoverandchainscraper;Types,maindimensions,equipments
【原文标准名称】:废水处理厂.矩形储罐.第1部分:带污泥铲运机、吸入式污泥清除器和链式铲运机的沉淀储罐.设备型号和主要尺寸
【标准号】:DIN19551-1-2002
【标准状态】:现行
【国别】:德国
【发布日期】:2002-12
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:水常规;槽;施工原则;高架人行道;溢流堰;集水沟;沉淀池;主要尺寸;铲运机;污水处理工厂;公差(测量);型式;尺寸;矩形盆;污泥括集机
【英文主题词】:catwalks;types;gullies;dimensions;scrapers;weirs;sewagetreatmentworks;maindimensions;rectangularbasins;sludgescrapers;tanks;principlesofconstruction;tolerances(measurement);settlementtanks;wa
【摘要】:Thedocumentisapplicabletorectangulartankswithsludgescraper,suctiontypesludgeremoverandchainscraperinwastewatertreatmentplants.Itspecifiesthemaindimensionsandtheprinciplesforthedesignofstructuresandtechnicalequipment.Thisstandardisnotapplicabletothetechnicalsettlementandthehydraulicaldetermination.#,,#
【中国标准分类号】:P41;Q81
【国际标准分类号】:13_060_30
【页数】:13P;A4
【正文语种】:德语