简介：NASArotor37wasusedasablindtestcaseforturbomachineryCFDbytheTurbomachineryCommitteeoftheIGTI.Therotorisatransoniccompressorwithatipspeedof454m/s(1500ft/s)andarelativelyhighpressureratioof2.1.Itwastestedinisolationwithacircumferentiallyuniforminletflowsothattheflowthroughitshouldbesteadyapartfromandeffectsofpassagetopassagegeometryvariationandmechanicalvibration.Assuchitrepresentsthesimplestpossibletypeoftestforthree-dimensionalturbomachineryflowsolvers.Howerver,therotorstillpresentsarealchallengeto3Dviscousflowsolversbecausetheshockwave-boudarylayerinteractionisstrongandtheeffectsofviscosityaredominantindeterminingtheflowdeviationandhencethepressureration.Elevenblindsolutionsweresubmittewdandinadditionanon-blindsolutionwasusedtopreparefortheexercies.ThispaperreviewstheflowinthetestcaseandthecomparisonsoftheCFDsolutionswiththetestdata.LessonsforboththeFlowphysicsintransonicfansandfortheapplicationofCFDtosuchmachinesarepointedout.

简介：Wehavefoundthattheexcitedenergyfromthegroundstatewith1f7=2configurationtothefirstexcitedstatewith2p3=2configurationin37SisobviouslylowercomparedwiththatinnearbyN=21isotones35Si,39Arand41Ca(seeFig.1,Theinsertindicatestherelevantsingle-particleorbitsofprotonandneutron).ThisinterestingphenomenonmayresultfromthecollapseofN=28closure,whichgivesthesufficientvalencespaceforcollectivedeformationwhichcanbeenrevealedfromtheB(E2)value.Therefore,toobtaintheB(E2),weperformtheexperimentsformeasuringthelifetimeofthefirstexcitedstatein37S.

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简介：Heavyionirradiationattractalargeinterestfortwoapplications:radiotherapyandspaceradiationprotectioninmannedspacemissions.ExposuretoheavyionsradiationresultsinmultipleeffectsthroughDNAdamageinduction.Single-cellgelelectrophoresisorcometassayisknownforitsabilitytodetectDNAdamageatthesinglecelllevelandhasbeenusedforyearstoassessDNAdamage.ItcandetectlowlevelsofDNAstrandbreaksinashorttime,justusingafewsamplecells.DNAdoublestrandbreaks(DSBs)aremeasuredattheneutralcometassaycondition;underthealkalinecometassayconditionbothDNAsinglestrandbreaks(SSBs)andpartDSBsaredetected.Thetwodimensionalcometassayisamodificationofthetwooriginalcometassay,cansimultaneouslydetectDNASSBsandDSBsinthesamehumanspermatozoa.