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【英文标准名称】:Cerealsandpulses;Determinationofhiddeninsectinfestation;Part4:Rapidmethods
【原文标准名称】:谷物和豆类虫灾隐患的测定第4部分:快速法
【标准号】:ISO6639-4-1987
【标准状态】:现行
【国别】:国际
【发布日期】:1987-02
【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/TC34
【标准类型】:()
【标准水平】:()
【中文主题词】:农产品;豆类;分析方法;测定;谷物产品;豆科作物;沾污;昆虫侵害;昆虫纲;插件;快速方法
【英文主题词】:Agriculturalproducts;Cerealproducts;Contamination;Determination;Insectinfestations;Insecta;Pulses(crops);Rapidmethod
【摘要】:ThispartofISO6639specifiesfiverapidmethodsforestimatingthedegreeof,ordetectingthepresenceof,hiddeninsectinfestationinasampleofacerealorpulse.NOTE—ThecharacteristicsleadingtothechoiceofrapidmethodaresummarizedinthetableinISO6639/1.Sectionone:Methodbydeterminationofcarbondioxideproduction(clauses3to9)Themethodisprimarilyintendedfortestingwholegrains.Itisnotapplicablefortestinga)finelygroundgrainproducts,asthereisariskthatpar-ticlesofmaterialwillbesuckedupwithairsamples;orb)grainproductswithmoisturecontentsgreaterthan15%(mlm),becauseoftheriskofcarbondioxideproducedbytheproductsthemselvesandbymicro-organismsin-terferingwiththeresults.Inaddition,themethodisnotapplicabletotherapidtestingofgrainproductsontowhichcarbondioxidehasalreadybeenadsorbedinlargequantities,forexamplegrainstoredinacon-finedatmosphereorwhenthereareclearexternalindicationsofheavyinfestation.Themethodcanbeusedforcoarselymilledorkibbledgrainproducts,providedthattheyhavebeensievedbeforetestingtoremovefineparticlesandlooseinsects.Themethoddoesnotpermitthepresenceofdeadadults,pupae,larvaeoreggstobedetected.Sectiontwo:Ninhydrinmethod(clauses10to16)Themethodisapplicabletoanydrygrainpronetointernalinsectinfestation,particularlywheat,sorghum,riceandsimilarsizedgrains.Largegrains,suchasmaize,havetobepartiallybroken(kibbled)beforetheycanbetested.Thistreatmentoflargegrainscancausesomeinsectstobelostorfragmented,thusrenderingtheinterpretationofresultsunreliable.Numbersofeggsandyounglarvaemaybeunderestimated,but,inthisrespect,themethodisnolessefficientthananyother.Sectionthree:Wholegrainflotationmethod(clauses17to24)Themethodissuitablefordetectinghiddeninfestationinmostcerealsandpulsesbutonlyonaqualitativebasis.Sectionfour:Acousticmethod(clauses25to31)Themethodissuitablefordetectinglivinginsectadultsandlarvaefeedinginsidegrains.Itdoesnotpermitdeadadultsandlarvaeorlivingeggsandpupae(non-feedingstages)tobedetected.Sectionfive:X-raymethod(clauses32to38)Themethodissuitablefordetectinglivinganddeadlarvaeandadultswithingrains.Insectswhichhavebeenrecentlykilled(forexamplebyfumigation)maybedifficulttodistinguishfromthosestillliving.
【中国标准分类号】:B20
【国际标准分类号】:67_060
【页数】:17P.;A4
【正文语种】:英语


【英文标准名称】:Electricalequipmentforaircraft.Voltagesurgeprotectionforseveralpowersources.
【原文标准名称】:飞机电气设备.多路电源的冲击性过压保护装置
【标准号】:NFL51-159-1965
【标准状态】:现行
【国别】:法国
【发布日期】:1965-12-01
【实施或试行日期】:1966-12-30
【发布单位】:(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:V40
【国际标准分类号】:29_120_50;49_060
【页数】:1P.;A4
【正文语种】:法语