DIN 51907-1997 炭素材料检验.用液体比重计测定密度.粘结剂与浸渍剂

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【英文标准名称】:Testingofcarbonmaterials-Determinationofdensitywithliquidpycnometer-Bindingandimpregnatingmaterials
【原文标准名称】:炭素材料检验.用液体比重计测定密度.粘结剂与浸渍剂
【标准号】:DIN51907-1997
【标准状态】:现行
【国别】:德国
【发布日期】:1997-10
【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】:碳素材料;硬沥青(石油产品);液体;碳;校准实施;粘合剂;密度测定瓶;密度瓶;测量,检验和仪器;浸渍材料;试验;定义;密度
【英文主题词】:carbonmaterials;density;measurement,testingandinstruments;liquids;calibrationpractice;testing;definitions;densitybottles;carbon;bindingagents;pitch(petroleumproduct);impregnatingmaterials
【摘要】:Thedocumentspecifiesamethodforthedeterminationofbindingandimpregnationmaterialswithliquidpycnometer.
【中国标准分类号】:Q50
【国际标准分类号】:71_060_10
【页数】:3P;A4
【正文语种】:德语


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【英文标准名称】:Parallelpinswithinternalthread,hardened
【原文标准名称】:淬硬的内螺纹直销
【标准号】:BSEN28735-1989
【标准状态】:作废
【国别】:英国
【发布日期】:1989-02-28
【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】:名称与符号;尺寸;钢;直径;表面硬化钢;锁定装置及定位装置;平行销;螺纹紧固件;表面处理;覆层;硬度;化学成分;定位销;内螺纹紧固件;低合金钢;紧固件;合金钢
【英文主题词】:
【摘要】:
【中国标准分类号】:J13
【国际标准分类号】:21_060_50
【页数】:14P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforQuantificationofaPseudomonasaeruginosaBiofilmGrownUsingaDripFlowBiofilmReactorwithLowShearandContinuousFlow
【原文标准名称】:用低剪切和连续流的滴灌流生物膜反应器量化铜绿假单胞菌(Pseudomonasaeruginosa)生物膜生长的标准试验方法
【标准号】:ASTME2647-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:E35.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:biofilm;coupon;growthreactor;Pseudomonasaeruginosa;reactor;sampling;shear
【摘要】:Vegetativebiofilmbacteriaarephenotypicallydifferentfromsuspendedcellsofthesamegenotype.Biofilmgrowthreactorsareengineeredtoproducebiofilmswithspecificcharacteristics.Alteringeithertheengineeredsystemoroperatingconditionswillmodifythosecharacteristics.Thepurposeofthistestmethodistodirectauserinhowtogrow,sampleandanalyzeaPseudomonasaeruginosabiofilmunderlowfluidshearandclosetotheair/liquidinterfaceusingthedripflowreactor.ThePseudomonasaeruginosabiofilmthatgrowshasasmoothappearanceandislooselyattached.Microscopically,thebiofilmissheet-likewithfewarchitecturaldetails.Thislaboratorybiofilmcouldrepresentthosefoundonproducesprayers,onfoodprocessingconveyorbelts,oncatheters,inlungswithcysticfibrosisandoralbiofilms,forexample.Thebiofilmgeneratedinthedripflowreactorisalsosuitableforefficacytesting.Afterthe54hgrowthphaseiscomplete,theusermayaddthetreatmentinsituorharvestthecouponsandtreatthemindividually.ResearchhasshownthatP.aeruginosabiofilmsgrowninthedripflowreactorwerelessresistanttodisinfectionthanbiofilmsgrownunderhighshearconditions.1.1ThistestmethodspecifiestheoperationalparametersrequiredtogrowarepeatablePseudomonasaeruginosabiofilmclosetotheair/liquidinterfaceinareactorwithacontinuousflowofnutrientsunderlowfluidshearconditions.Theresultingbiofilmisrepresentativeofgeneralizedsituationswherebiofilmexistsattheair/liquidinterfaceunderlowfluidshearratherthanrepresentativeofoneparticularenvironment.1.2Thistestmethodusesthedripflowbiofilmreactor.Thedripflowreactor(DFR)isaplugflowreactorwithlaminarflowresultinginlowfluidshear.Thereactorisversatileandmayalsobeusedforgrowingand/orcharacterizingdifferentspeciesofbiofilms.1.3Thistestmethoddescribeshowtosampleandanalyzebiofilmforviablecells.Biofilmpopulationdensityisrecordedaslogcolonyformingunitspersurfacearea.1.4Basicmicrobiologytrainingisrequiredtoperformthistestmethod.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J88
【国际标准分类号】:13_060_30;91_010_20
【页数】:5P.;A4
【正文语种】:英语