GB/T 12496.17-1999 木质活性炭试验方法 硫酸盐的测定
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基本信息
标准名称: | 木质活性炭试验方法 硫酸盐的测定 |
英文名称: | Test methods of wooden activated carbon-Determination of sulphate |
中标分类: |
农业、林业 >>
林业 >>
木炭 |
ICS分类: |
|
替代情况: | 替代GB12496.4-1990 |
发布部门: | 国家质量技术监督局 |
发布日期: | 1999-11-10 |
实施日期: | 2000-04-01 |
首发日期: | 1990-10-12 |
作废日期: | 1900-01-01 |
主管部门: | 国家林业局 |
提出单位: | 国家林业局 |
归口单位: | 国家林业局 |
起草单位: | 中国林业科学研究院林产化学工业研究所 |
出版社: | 中国标准出版社 |
出版日期: | 2000-04-01 |
页数: | 1页 |
适用范围
本标准规定了木质活性炭内硫酸盐的测定方法。本标准适用于木质活性炭。
前言
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目录
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引用标准
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所属分类: 农业 林业 林业 木炭
【英文标准名称】:Methodsoftestformasonryunits-Part9:Determinationofvolumeandpercentageofvoidsandnetvolumeofclayandcalciumsilicatemasonryunitsbysandfilling;GermanversionEN772-9:1998+A1:2005
【原文标准名称】:圬工单位的试验方法.第9部分:通过添加盐测定黏土和硅酸盖圬工单位孔隙体积和百分比及净体积
【标准号】:EN772-9-2005
【标准状态】:现行
【国别】:
【发布日期】:2005-05
【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】:解释;建筑;测定;规范;数学计算;施工材料;试验装置;圬工;孔数;净值;砌砖工作;百分率;体积;孔;砂;穿孔;试验;砖;试样;硅酸盐砖
【英文主题词】:Bricks;Brickwork;Calciumsilicatebricks;Construction;Constructionmaterials;Determination;Determinations;Holes;Interpretations;Masonry;Mathematicalcalculations;NetVolume;Numberofholes;Percentage;Punchings;Sand;Specification;Testspecimens;Testing;Testingdevices;Volume
【摘要】:
【中国标准分类号】:P24
【国际标准分类号】:91_100_15
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:Cableddistributionsystemsfortelevisionandsoundsignals-Systemperformanceforreturnpaths
【原文标准名称】:电视和声音信号的电缆分配系统.回程线路的系统性能
【标准号】:BSEN50083-10-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-04-18
【实施或试行日期】:2002-04-18
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:1GeneralStandardsofEN50083seriesdealwithcablenetworksfortelevisionsignals,soundsignalsandinteractiveservicesincludingequipment,systemsandinstallations-forheadend-reception,processinganddistributionoftelevisionandsoundsignalsandtheirassociateddatasignals,and-forprocessing,interfacingandtransmittingallkindsofsignalsforinteractiveservicesusingallapplicabletransmissionmedia.Allkindsofnetworkslike-CATV-networks-MATV-networksandSMATV-networks-individualreceivingnetworksandallkindsofequipment,systemsandinstallationsinstalledinsuchnetworks,arewithinthisscope.Theextentofthesestandardisationworkisfromtheantennas,specialsignalsourceinputstotheheadendorotherinterfacepointstothenetworkuptothesystemoutletortheterminalinput,wherenosystemoutletexists.Thestandardisationofanyuserterminals(i.e.tuners,receivers,decoders,multimediaterminalsetc.)aswellasofanycoaxialandopticalcablesandaccessoriesthereforisexcluded.2Specificscopeofthispart10Thisstandardisdealingwiththetransparentreturnpathofcablenetworksoperatedinthefrequencyrangebetween5MHzand65MHzorpartsthereof.Higherfrequenciesmaybeusedinfibrebasednetworks.NOTEInadditionitispossibletousethefrequencyrangefrom0MHzto5MHzforreturnpathtransmissions,e.g.forNMSorothercontrol,monitoringandsignallingpurposes.Applicationsbelow5MHzarenotcoveredbythisstandard.Anactivereturnpathcarriestypicallyonlyreturnsignals.Apassivereturnpathcanbeusedforbothreturnandforwardsignals.Thisstandardlaysdownthebasicmethodsofmeasurementforsignalstypicallyusedinthereturnpathofcablenetworksinordertoassesstheperformanceofthosesignalsandtheirperformancelimits.Allrequirementsrefertotheperformancelimitswhichshallbeobtainedbetweenthereferencepoints(Figure1)ofthereturnpathsystem.Onereferencepointisthenetworkterminationclosetothesubscriber.Itisthelastpointwhereallforwardandreturnsignalsarepresentandcarriedonthesamecable.Ifnonetworkterminationpointexists,thereferencepointisthesystemoutlet.Theotherreferencepointistheinputofthereturnsignalreceiver(ortransceiver).Atthispointthetransparentsignalpathendsandbehindthispointthesignalistreatedinanon-transparentway.Thereturnsignalreceivercanbesituatedattheheadendbutcanalsobeatthenodeofthecoaxialcelloratanyotherpointofthenetwork.Inadditiontothesystemperformancerequirementsforthetransparentreturnpath,systemperformancerecommendationswerelaiddowninthisstandarde.g.fortheoverallfrequencyallocation,fortheuseofspecificmodulationtechniquesfordifferentinteractivemultimediaservicesorfordifferentsub-bandswithinthereturnpathfrequencyrange,etc.Specificequipmentinstalledincablenetworksfortheoperationofsuchreturnpathsisstandardisedintherelevantequipmentstandards,parts3to6oftheEN50083series.Transmissionsystemsarenotwithinthescopeofthisstandard.
【中国标准分类号】:M60
【国际标准分类号】:33_060_40
【页数】:34P;A4
【正文语种】:英语