简介:<正>Inthisnote.wewillshowthatnononuniformlatticeofSO(3,1)canbethefundamentalgroupofaquasi-compactKhlermanifold.Thus,combiningwiththeresultin[1].onegetsthatanonuniformlatticeinSO(n,1)(n≥3)cannotbeπ1ofanyquasi-compactKhlerianmanifold.
简介:Galα(1,3)Gal(galepitope)isacarbohydrateepitopeandsynthesizedinlargeamountbyα(1,3)galactosyltransferase[α(1,3)GT]enzymeonthecellsoflowermammaliananimalssuchaspigsandmice.Humanhasnogalepitopeduetotheinactivationofα(1,3)GTgenebutproducesalargeamountofantibodies(anti-Gal)whichrecognizeGalα(1,3)Galstructuresspecifically.Inthisstudy,areplicationdeficientrecombinantadenoviralvectorAd5sGTcontainingpigα(1,3)GTcDNAwasconstructedandcharacterized.Adenoviralvector-mediatedtransferofpigα(1,3)GTgeneintohumantumorcellssuchasmalignantmelanomaA375,stomachcancerSGC-7901,andlungcancerSPC-A-1wasreportedforthefirsttime.ResultsshowedthatGalepitopedidnotincreasethesensitivityofhumantumorcellstohumancomplement-mediatedlysis,althoughhumancomplementactivationandthebindingofhumanIgGandIgMnaturalantibodiestohumantumorcellswereenhancedsignificantlyafterAd5sGTtransduction.AppearanceofgalepitopeonthehumantumorcellschangedtheexpressionofcellsurfacecarbohydratesreactingwithUlexeuropaeusI(UEAI)lectins,Viciavillosaagglutinin(VVA),Arachishypogaeaagglutinin(PNA),andGlycinemaxagglutinin(SBA)todifferentdegrees.Inaddition,noeffectofgalepitopeonthegrowthinvitroofhumantumorcellswasobservedinMTTassay.
简介:设p是适合p≡1(mod6)的奇素数.本文运用Pell方程的基本性质证明了:如果p=3r2-2或者3p=r2+2,其中r是正整数,则方程x3-1=3py2无正整数解(x,y).根据上述结果可知:当p〈100时,该方程仅当p=37时有正整数解(x,y).
简介:卷首语与改革同步与读者同行1.1怎样看王遂舟2.1矫正GDP意识3.1反腐败掌声响起来4.1“五四”回眸:那种心跳的感觉5.1愤慨下的检讨与呐喊6.1“减人”为何不“增效”7.1市场就是超越8.1给司法腐败一个说法9.1谁来保护农民的利益10.1开创国企改革新局面11.1研究百姓12.1本期视点’99钱往哪儿投1.4“亚细亚”大沉浮/笑寒2.41998—1999中国改革与发展的走势3.4政经连体中国市场经济的“天灾人祸”/巩胜利4.4世纪回眸:追寻我们共同的精神家园5.4——话说“五四”追问南街:旗帜?怪胎?/姚中福6.4醒狮中华:何日巨吼惊天下/魏雅华7.4共同富裕还能实现吗?/龚维斌8.
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