NY/T 5128-2002 无公害食品 肉牛饲养管理准则
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来源:标准资料网
基本信息
标准名称: | 无公害食品 肉牛饲养管理准则 |
中标分类: |
农业、林业 >>
畜牧 >>
家畜、家禽 |
ICS分类: |
农业 >>
农业和林业 >>
动物饲养和繁殖
|
发布部门: | 中华人民共和国农业部 |
发布日期: | 2002-07-25 |
实施日期: | 2002-09-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
提出单位: | 中华人民共和国农业部 |
起草单位: | 中国农业科学院畜牧研究所、中国农业大学 |
起草人: | 许尚忠、李俊雅、李胜利、任红艳、贾恩堂、邵志文 |
出版社: | 中国标准出版社 |
出版日期: | 2002-09-01 |
页数: | 6页 |
书号: | 155066.2-14611 |
适用范围
本标准规定了无公害肉牛生产中环境、引种和购牛、饲养、防疫、管理、运输、废弃物处理等涉及到肉牛饲养管理的各环节应遵循的准则。本标准适用于生产无公害肉牛的种牛尝种公牛站、胚胎移植中心、商品牛尝隔离场的饲养与管理。
前言
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引用标准
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所属分类: 农业 林业 畜牧 家畜 家禽 农业 农业和林业 动物饲养和繁殖
【英文标准名称】:StandardTestMethodforDielectricBreakdownVoltageofInsulatingLiquidsUsingDiskElectrodes
【原文标准名称】:用圆盘电极测定绝缘液体介电击穿电压的标准试验方法
【标准号】:ASTMD877-2002(2007)
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:D27.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;绝缘液体
【英文主题词】:breakdownvoltage;dielectricstrength;diskelectrodes;electricalinsulatingliquids;testcup
【摘要】:Thedielectricbreakdownvoltageisameasureoftheabilityofaninsulatingliquidtowithstandelectricalstress.Thepower-frequencybreakdownvoltageofaliquidisreducedbythepresenceofcontaminantssuchascellulosicfibers,conductingparticles,dirt,andwater.Alowresultinthistestmethodindicatesthepresenceofsignificantconcentrationsofoneormoreofthesecontaminantsintheliquidtested.SeeAppendixX1.Ahighbreakdownvoltagemeasuredinthistestmethoddoesnotnecessarilyindicatethattheamountofthecontaminantspresentinaliquidfromwhichthesamplewastakenaresufficientlylowforthesampledliquidtobeacceptableinallelectricalequipment.TestMethodD877isnotsensitivetolowlevelsofthesecontaminants.Breakdowninthistestmethodisdominatedbyeventsoccurringattheelectrodeedges.Thevoltagestressdistributionbetweentheparalleldiskelectrodesusedinthistestmethodarequasi-uniformandthereissubstantialstressconcentrationatthesharpedgesoftheflatdiskfaces.Thistestmethodmaybeusedforevaluationofinsulatingliquidsinequipmentthatisdesignedtobefilledwithunprocessedliquidsasdeliveredbyavendor.Thistestmethodisnotrecommendedforevaluationofthebreakdownvoltageofliquidsusedinequipmentthatrequirestheapplicationofvacuumandfilteringoftheoilbeforebeingplacedintoservice.TestMethodD1816shouldbeusedtodeterminethebreakdownvoltageoffilteredanddegassedliquids.Thistestmethodisusedinlaboratoryorfieldtests.Forfieldbreakdownresultstobecomparabletolaboratoryresults,allcriteriaincludingroomtemperature(20to30x00B0;C)mustbemet.1.1Thistestmethoddescribestwoprocedures,AandB,fordeterminingtheelectricalbreakdownvoltageofinsulatingliquidspecimens.Thebreakdowntestusesacvoltageinthepower-frequencyrangefrom45to65Hz.1.2Thistestmethodisusedtojudgeifthediskelectrodebreakdownvoltagerequirementsaremetforinsulatingliquids,asdeliveredfromthemanufacturer,thathaveneverbeenfilteredordried.SeeSpecificationD3487,SpecificationD4652,andGuideD5222fortheminimumspecifiedelectricalbreakdown.ThistestmethodshouldbeusedasrecommendedbyprofessionalorganizationstandardssuchasIEEEC57.106.1.3LimitationsoftheProcedures1.3.1Thesensitivityofthistestmethodtothegeneralpopulationofcontaminantspresentinaliquidsampledecreasesasappliedtestvoltagesusedinthistestmethodbecomegreaterthanapproximately25kVrms.1.3.2Iftheconcentrationofwaterinthesampleatroomtemperatureislessthan60%ofsaturation,thesensitivityofthistestmethodtothepresenceofwaterisdecreased.ForfurtherinformationrefertoRR:D27-1006.1.3.3Thesuitabilityforthistestmethodhasnotbeendeterminedforaliquid''sviscosityhigherthan900cStat40C.1.4ProcedureApplications1.4.1ProcedureAProcedureAisusedtodeterminethebreakdownvoltageofliquidsinwhichanyinsolublebreakdownproductseasilysettleduringtheintervalbetweentherequiredrepeatedbreakdowntests.Theseliquidsincludepetroleumoils,hydrocarbons,andaskarels(PCB)usedasinsulatingandcoolingliquidsintransformers,cables,andsimilarapparatus.ProcedureAmaybeusedtoobtainthedielectricbreakdownofsiliconefluidasspecifiedinTestMethodsD2225,providedthedischargeenergyintothesampleislessthan20mJ(millijoule)perbreakdownforfiveconsecutivebreakdowns.1.4.2ProcedureBThisprocedureisusedtodeterminethebreakdownvoltageofliquidsinwhichanyinsolublebreakdownproductsdonotcompletelysettlefromthe......
【中国标准分类号】:K15
【国际标准分类号】:29_040_10
【页数】:6P.;A4
【正文语种】:
【英文标准名称】:StandardTestMethodforBoilingRangeDistributionofPetroleumFractionsbyGasChromatography
【原文标准名称】:气相色谱法对石油馏分的沸腾区域分布的标准试验方法
【标准号】:ASTMD2887-1999
【标准状态】:作废
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:石油产品;分配;润滑剂;试验
【英文主题词】:petroleumproducts;distribution;lubricants;testing
【摘要】:
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:
【正文语种】:英语