简介:为了从期刊文献的学科属性实现族性检索,为文章的分类统计创造条件,本刊2005起均对具有文献标识码的文章采用《中国图书馆分类法》(第四版)进行分类后。标识分类号文章一般标识1个分类号,多个主题的文章可标识2个或3个分类号;主分类号排在第一位,多个分类号之间应以分号分隔。希望有条件查询的作者在来稿时自行标明中图分类号。
简介:.Thesingle2dilationorthogonalwaveletmultipliersinonedimensionalcaseandsingleA-dilation(whereAisanyexpansivematrixwithintegerentriesand|detA|=2)waveletmultipliersinhighdimensionalcasewerecompletelycharacterizedbytheWutamConsortium(1998)andZ.Y.Li,etal.(2010).Butthereexistnomoreresultsonorthogonalmultivariatewaveletmatrixmultiplierscorrespondingintegerexpansivedilationmatrixwiththeabsolutevalueofdeterminantnot2inL2(R2).Inthispaper,wechoose2I2=(2002)asthedilationmatrixandconsiderthe2I2-dilationorthogonalmultivariatewaveletY={y1,y2,y3},(whichiscalledadyadicbivariatewavelet)multipliers.Wecallthe3×3matrix-valuedfunctionA(s)=[fi,j(s)]3×3,wherefi,jaremeasurablefunctions,adyadicbivariatematrixFourierwaveletmultiplieriftheinverseFouriertransformofA(s)(cy1(s),cy2(s),cy3(s))?=(bg1(s),bg2(s),bg3(s))?isadyadicbivariatewaveletwhenever(y1,y2,y3)isanydyadicbivariatewavelet.Wegivesomeconditionsfordyadicmatrixbivariatewaveletmultipliers.TheresultsextendedthatofZ.Y.LiandX.L.Shi(2011).Asanapplication,weconstructsomeusefuldyadicbivariatewaveletsbyusingdyadicFouriermatrixwaveletmultipliersandusethemtoimagedenoising.
简介:IthasbeenshownthatIL-2andIL-15canhaveopposingeffectsonlifeanddeathofTcells.However,theroleofIL-2andIL-15inregulatingthefateofothercelltypesislessclear.Inthepresentstudy,weexaminedtheimpactofIL-2andIL-15onlifeanddeathofpre-BcellsusingtheBAF-B03line.WeshowedthatBAF-B03cellsconstitutivelyexpressedtheprivateIL-2RαchainandIL-15Rαchain,andthesharedIL-2Rβchainandγcchain.StimulationofBAF-B03cellsinvitrowithIL-2andIL-15inducedvigorouscellproliferationinadose-dependentfashion.TitrationofIL-2andIL-15intheassayshowedthatthemitoticeffectsofIL-2andIL-15wereremarkablysimilar,Howerer,thesensitivitiesofBAF-B03cellstoFasmediatedapoptosisafterIL-2andIL-15stimulationwerestrikinglydifferent.CellsculturedinIL-2readilyunderwentapoptoticcelldeathuponcross-linkingoftheFasreceptorwhereascellsculturedinIL-15wereextremelyresistanttoFastriggeredcelldeath.Theanti-apoptoticeffectofIL-15inthismodelwasassociatedwithincreasedexpressionofBcl-xL.FLIPexpression,however,wascomparablebetweenIL-2andIL-15stimulatedcells.WeconcludethatIL-2andIL-15havediametricallyoppositeeffectonthefateofBAF-B03cells,althoughbothcytokinessharesimilarreceptorstructureandexhibitsimilarmitoticactivities.