ISO 3360-1976 工业(包括食品)用磷酸和磷酸钠氟含量的测定茜素配位酮和硝酸镧光度法
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【英文标准名称】:Phosphoricacidandsodiumphosphatesforindustrialuse(includingfoodstuffs);Determinationoffluorinecontent;Alizarincomplexoneandlanthanumnitratephotometricmethod
【原文标准名称】:工业(包括食品)用磷酸和磷酸钠氟含量的测定茜素配位酮和硝酸镧光度法
【标准号】:ISO3360-1976
【标准状态】:现行
【国别】:国际
【发布日期】:1976-08
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:磷酸盐;分光光度测量分析;氟;分光光度法;磷酸钠;磷酸;化学分析;化合物;钠;连接;工业;化学分析和试验;含量测定;食品添加剂;食品工业
【英文主题词】:Chemicalanalysisandtesting;Connections;Determinationofcontent;Fluorine;Foodadditives;Foodindustry;Industries;Phosphates;Phosphoricacid;Sodium;Spectrophotometry
【摘要】:ApplicabletoproductstheFcontentofwhichisequaltoormorethan0.5mg/kg.Specifiestheseparationoftheelementfromatestportionbysteamdistillationinaphosphoricacidmedium.Formationofablue-colouredcomplexwithacombinedreagentalizarincomplexone/lanthanumnitrateinabufferedmediumatthepHof4.6.Additionofacetonetoincreasethestabilityofthecomplexandthesensitivity.Photometricmeasurementofthecomplexatawavelengthofabout600nm.
【中国标准分类号】:G10
【国际标准分类号】:71_060_30
【页数】:5P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforAirContentofFreshlyMixedConcretebytheVolumetricMethod
【原文标准名称】:体积法测定新拌混凝土的含气量的标准试验方法
【标准号】:ASTMC173/C173M-2010b
【标准状态】:现行
【国别】:
【发布日期】:2010
【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】:C09.60
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:空气含量;校正;混凝土;校正因子;新拌混凝土;测量碗;米;体积法;体积测量
【英文主题词】:aircontent;calibration;concrete;correctionfactor;freshlymixedconcrete;measuringbowl;meter;volumetricmethod;Volumetricmeasurement
【摘要】:Thistestmethodcoversthedeterminationoftheaircontentoffreshlymixedconcrete.Itmeasurestheaircontainedinthemortarfractionoftheconcrete,butisnotaffectedbyairthatmaybepresentinsideporousaggregateparticles.Therefore,thisistheappropriatetesttodeterminetheaircontentofconcretescontaininglightweightaggregates,air-cooledslag,andhighlyporousorvesicularnaturalaggregates.Thistestmethodrequirestheadditionofsufficientisopropylalcohol,whenthemeterisinitiallybeingfilledwithwater,sothatafterthefirstorsubsequentrollingslittleornofoamcollectsintheneckofthetopsectionofthemeter.Ifmorefoamispresentthanthatequivalentto2%airabovethewaterlevel,thetestisdeclaredinvalidandmustberepeatedusingalargerquantityofalcohol.Additionofalcoholtodispelfoamanytimeaftertheinitialfillingofthemetertothezeromarkisnotpermitted.Theaircontentofhardenedconcretemaybeeitherhigherorlowerthanthatdeterminedbythistestmethod.Thisdependsuponthemethodsandamountsofconsolidationeffortappliedtotheconcretefromwhichthehardenedconcretespecimenistaken;uniformityandstabilityoftheairbubblesinthefreshandhardenedconcrete;accuracyofthemicroscopicexamination,ifused;timeofcomparison;environmentalexposure;stageinthedelivery,placementandconsolidationprocessesatwhichtheaircontentoftheunhardenedconcreteisdetermined,thatis,beforeoraftertheconcretegoesthroughapump;andotherfactors.1.1Thistestmethodcoversdeterminationoftheaircontentoffreshlymixedconcretecontaininganytypeofaggregate,whetheritbedense,cellular,orlightweight.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.TheSIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(WarningFreshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.)
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:8P.;A4
【正文语种】:
Product Code:SAE AS5391
Title:Health and Usage Monitoring System Accelerometer Interface Specification
Issuing Committee:E-32 Aerospace Propulsion Systems Health Management
Scope:Accelerometers are transducers, or sensors, that convert acceleration into an electrical signal which can be used for vibration monitoring and analysis.This document defines interface requirements for accelerometers and associated interfacing electronics for use in a helicopter Health and Usage Monitoring System (HUMS). The purpose is to standardize the accelerometer-to-electronics interface with the intent of increasing interchangeability among HUMS sensors/systems and reducing the cost of HUMS accelerometers. Although this interface was specified with an internally amplified piezoelectric accelerometer in mind, this does not preclude the use of any other sensor technology that meets the requirements given in this specification.These SAE HUMS Interface Specifications include the minimal interface and performance requirements for interoperability with the Rotorcraft Industry Technology Association (RITA) compliant HUMS. Compliance with these Interface Specifications can be referenced in more comprehensive procurement and device specifications.