简介：Theamidoximationprocessofcommercialpolyacrylonitrilefiberwasstudied.Theresultsshowedthatitispossibletoprepareachelatingfiber,whichpresenthighadsorptioncapabilitytoAu^3+andreasonablemechanicalproperty,bytheamidoximationofPANfiber,withtheincreaseofreactiontimeoragentconcentration,thecoversionofCNgroupinPANincreasesrapidlyatfirstandthenincreasesslowly.Whenthereactiontemperatureishigherthanthatatwhichtheparacrystallineregioninthefiberisdestroyed,theconversionofCNgroupincreasesgreatly,butthemechanicalpropertyofthefiberbeginstobeinferior.

简介：ＢｕｄｄｈｉｓｔＳｔｕｄｉｅｓ￥ＴｈｅＳｅｒａＭｏｎａｓｔｅｒｙｆｏｌｌｏｗｓｉｔｓｔｒａｄｉｔｉｏｎｂｙｏｆｆｅｒｉｎｇＢｕｄｄｈｉｓｔｓｔｕｄｉｅｓｄｅｇｒｅｅｓｔｏｌａｍａｓｔｕｄｅｎｔｓ．ＴｈｅｓｅｄｅｇｒｅｅｓｉｎｃｌｕｄｅＫａｉｎｂｏ，Ｗ...

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简介：Duringtheperiodof1999～2002,theChineseseismologistsmadeaseriousofdevelopmentsinthestudyonseismicsourcesincludingobservations,experimentsandtheory.Inthefieldofobservation,themethodsoftheaccuracylocationofearthquakesources,theinversionofseismicmomenttensorandthemechanismofearthquakesourceareimprovedanddeveloped.Alotofimportantearthquakeeventsarestudiedbyusingthesemethods.Theruptureprocessesoftheseeventsareinvertedandinvestigatedcombinedwiththelocalstressfieldsandthetectonicmomentbyusingthemeasurementsofsurfacedeformation.Inthefieldsofexperimentsandtheory,manydevelopmentsareobtainedincauseofseismicformation,conditionofstressandtectonics,dynamicsofearthquakerupture,rockfractureandnucleationofstrongearthquakes.

简介：Inthispaper,theresearchworkonaeroacousticsinturbomachinerydoneintheThermoturbomachineryInstitute,DepartmentofPowerMachineryEngineering,ShanghaiJiaoTongUniversity,forthepast15yearsissummarized.Itincludes:aeroacousticsimilaritylawandcorrectionofnon-similarity,mechanismofacousticcontrolofseparatedflow,aerodynamicandaeroacousticcomprehensiveoptimumcalculation,andtheinfluenceofinletturbulenceandinletdistortion.

简介：Theriversystemsobservedtodayisthecumulativeresultofsurface,rill,andgullyerosion,andsedimenttransport,scour,anddeposition.Thedivisionsofapproachbetweenthesetworelatedareasareman-made,andarenotbasedonsoundscience.Mostoftheerosionstudiesaredonebygeologistsandagriculturalengineerswhoareconcernedofthesurface,rill,andgullyerosionandthelossofagriculturallandproductivity.Hydraulicengineersaremoreinterestedinthestudyofsedimenttransport,scour,anddeposition,andtheirimpactsonriverengineeringandhydraulicstructuresinriversandreservoirs.Erosionstudiesareoftenbasedonempiricalrelationshipsorfielddatatodeterminatetheannualsedimentyieldfromawatershed.Ontheotherhand,hydraulicengineersfocustheirattentiononsolvingequationsbasedonassumedinitialandboundaryconditionswithatimescaleofdays,hours,orseconds.Bothapproacheshavetheircomplementarystrengthsandweaknesses.Itisimportanttoprovideaforumforspecialistsinbothareastocommunicate,exchangeideas,andlearnfromeachother.

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简介：ThedevelopmentofseismicwavestudyinChinainthepastfouryearsisreviewed.Thediscussionisdividedintoseveralaspects,includingseismicwavepropagationinlaterallyhomogeneousmedia,laterallyheterogeneousmedia,anisotropicandporousmedia,surfacewaveandseismicwaveinversion,andseismicwavestudyinprospectingandloggingproblems.Importantprojectsinthecurrentstudiesonseismicwaveissuggestedasthedevelopmentofhighefficientnumericalmethods,andapplyingthemtothestudiesofexcitationandpropagationofseismicwavesincomplexmediaandstronggroundmotion,whichwillformafoundationforrefinedearthquakehazardanalysisandprediction.

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简介：TheChinastudiesprogramemerginginBrussels,theheartofEuropeanUnion(EU),isthenaturaloutcomeofChina'snewlyestablishedprominenceontheworldstage.Brussels'Chinastudies,comparedwithChinastudiesinAmericaandEuropeancountries,isunique.KnowingthehistoryandthedevelopmentofthecurrentstatusofChinastudiesinBrussels,wecandobetterinpromotingnotonlyChinastudiesthere,butalsoimproveEU-ChinarelationsthroughBrussels'universitiesandinstitutes.

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简介：ＥＸＰＥＲＩＭＥＮＴＡＬＳＴＵＤＩＥＳＯＦＴＨＥＥＦＦＥＣＴＳＯＦＰＲＥＳＴＲＥＳＳｏｎｉｎｔａｃｔＣｈａｎｉｎｅＴｉｂｉａＢｏｎｅＳｔｒｕｃｔｕｒｅＬｉｕＢａｏｗｅｉ，ＬｕＳｈｉｂｉ，ＷａｎｇＪｉｆａｎｇＤｅｐｔ．ｏｆＯｒｔｈｏｐ．ｏｆＧｅｎｅｒａ...

简介：TolueneDiisocyanate(TDI),theimportantindustrialmanufacturematerial,iswidelyusedintheproductionofpolyurethane,paints,insulationmaterialandelectroniccomponents.Inrecentyears,withthedeveoplementofTDIappliationfields,thequestioncausedbyTDIhasalsoarised.Summarizestherearchoftoxicologyoftoluenediisocyanateindomesticandabord.

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简介：ＴＨＥＳＴＵＤＩＥＳＯＮＤＥＧＲＡＤＡＴＩＶＥＫＩＮＥＴＩＣＯＦＭＥＤＩＣＡＬＣＨＩＴＯＳＡＮＴＨＥＳＴＵＤＩＥＳＯＮＤＥＧＲＡＤＡＴＩＶＥＫＩＮＥＴＩＣＯＦＭＥＤＩＣＡＬＣＨＩＴＯＳＡＮＳｕｎＤｕｏｘｉａｎ；ＤｏｎｇＡｎｊｉｅ（Ｄｅｐａｒｔｍｅｎｔ...

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简介：Theaimofthisinvestigationwastodefinetheeffectivenessofnon-contactdryingusingultrasonicvibrations.Diskradiatorswereusedforcarryingoutexperiments,andaspecialdryingchamberwasdesignedtoprovideresonantamplificationofultrasonicvibrations(from130to150dB).Dryingofginsengandothervegetablesdemonstratedthattheapplicationofultrasonicvibrationsreducedpowerinputsby20%incomparisonwithconvectivedrying.Italsoledtoadecreaseof6%infinalmoisturecontent,ifthedurationofdryingwasconstant.Thelevelofintensificationofultrasonicdryingwashigh(upto50gfor1kgofdryingmaterial),whichhelpedtolowerthetemperatureofthedryingagentandimprovethequalityofthedriedproducts.