Product Code:SAE ARP682
Title:Safety Lap Belts (For Civil Transport Aircraft) (Cancelled Aug 2000, Superseded by ARP4101/1)
Issuing Committee:Aircraft Seat Committee
Scope:This Aerospace Recommended Practice (ARP) provides recommendations intended for standardization of safety lap belts without hindering the development of new, improved design. The purpose is not to specify the design methods or specific mechanism to accomplish the objectives.【英文标准名称】:StandardGuideforDosimetryinRadiationResearchonFoodandAgriculturalProducts
【原文标准名称】:食品和农产品辐射研究中剂量测定的标准指南
【标准号】:ASTMISO/ASTM51900-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E10.01
【标准类型】:(ISO/ASTM)
【标准水平】:()
【中文主题词】:
【英文主题词】:absorbeddose;absorbed-dosemapping;absorbed-dosemeasurement;dosimetrysystem;electronbeam;experimentaldesign;foodandagriculture;gammaradiation;ionizingradiation;measurementuncertainty;primary-standarddosimeter;radiation-sensitiveindi
【摘要】:4.1Thisguideisintendedtoprovidedirectionondosimetryforexperimentsinfoodandagriculturalresearch,andonthereportingofdosimetryresults.Researchconcerningtheeffectivenessofirradiationoffoodandagriculturalproductstoachieveadefinedbenefitinvolvesverydifferentabsorbed-dosespecificationsfromonestudyandoneproducttoanother.Forexample,theabsorbeddoserequiredtosterilizefruitfliesismuchlowerthanthedosesrequiredtoinactivatesomebacterialpathogensinmeat,ortodecontaminatespices.NOTE4-Examplesoftherelevanteffectsofirradiationincludereductionofviablefood-bornebacteria,virusesandparasitesandphytosanitarytreatment(suchasdisinfestationoffruitsandvegetables),preventionofsprouting,delayofripening,andchangesinproductchemistryandquality.Furtherdiscussionoftheseeffectsisoutsidethescopeofthisguide.RefertoASTMGuidesF1355,F1356,F1736andF1885.4.2Properreportingoftheirradiationaspectisimportantsincethedegreeofbiologicaleffectmaybeafunctionofvariousfactorssuchastheradiationsource,theabsorbed-doserate,energyoftheincidentradiation,environmentaleffectsduringirradiation,andthetypeofincidentradiation.Thisguideattemptstohighlighttheinformation,includingthemethodologyandresultsoftheabsorbed-dosemeasurements,necessaryforanexperimenttoberepeatablebyotherresearchers.NOTE5-Factorsthatmayinfluencetheresponseofagriculturalproductstoionizingradiationincludegenus,species,variety,vigor,lifestage,initialquality,stateofripeness,temperature,moisturecontent,pH,packaging,shipping,andstorageconditions.Althoughthesefactorsarenotdiscussedinthisguide,theyshouldbeconsideredwhenplanningexperiments(seeASTMGuidesF1355,F1356,F1640,F1736andF1885.4.3Ideally,anexperimentshouldbedesignedtoirradiatethesampleasuniformlyaspossible.Inpractice,acertainvariationinabsorbeddosewillexistthroughoutthesample.Absorbed-dosemappingisusedtodeterminethemagnitude,location,andreproducibilityofthemaximum(Dmax)andminimumabsorbeddose(Dmin)foragivensetofexperimentalparameters.Dosimetersusedfordosemappingmustbecapableofrespondingtodosesanddosegradientslikelytooccurwithinirradiatedsamples.4.4Theoreticalcalculationsmayprovideusefulinformationaboutabsorbed-dosedistributionintheirradiatedsample,especiallynearmaterialinterfaces(seeASTMGuideE2232).1.1Thisguidecoverstheminimumrequirementsfordosimetryandabsorbed-dosevalidationneededtoconductresearchontheirradiationoffoodandagriculturalproducts.Suchresearchincludesestablishmentofthequantitativerelationshipbetweentheabsorbeddoseandtherelevanteffectsintheseproducts.Thisguidealsodescribestheoverallneedfordosimetryinsuchresearch,andinreportingoftheresults.1.2Thisguideisintendedforusebyresearchscientistsinthefoodandagriculturalcommunities,andnotjustscientistsconductingirradiationresearch.It,therefore,includesmoretutorialinformationthanmostotherASTMandISO/ASTMdosimetrystandardsforradiationprocessing.1.3Thisguideisinnowayintendedtolimittheflexibilityoftheexperimenterintheexperimentaldesign.However,theradiationsourceandexperimentalsetupshouldbechosensuchthattheresultsoftheexperimentwillbebeneficialandunderstandabletootherscientists,regulatoryagencies,andthefoodandagriculturalcommunities.1.4Theeffectsproducedbyionizingradiationinbiologicalsystemsdependonalargenumberoffactorswhichmaybephysical,physiological,orchemical.Althoughnottreatedindetailinthisguide,quantitativedataofenvironmentalfactorsthatmayaffecttheabsorbed-doseresponseofdosimeters,......
【中国标准分类号】:
【国际标准分类号】:
【页数】:9P.;A4
【正文语种】:英语