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5篇 您的检索式:作者名="R.F.Silva"
    题名 作者 年代 出处 被引量
1鸡的J亚群白血病病毒的分离及部分序列比较显示文摘通过接种鸡胚成纤维细胞、聚合酶链式反应 (PCR)技术及特异性单抗的间接荧光抗体反应 (IFA) ,从某大型肉用型种鸡场的疑似J亚群白血病的病鸡中 ,以及 2 5个临床健康的商品代肉鸡群的 2群中 ,分离鉴定出J亚群禽白血病病毒 (ALV J)。在用抗ALV Jgp85单克隆抗体JE9的IFA中 ,来自病鸡群的两株病毒SD990 1和SD990 2呈强阳性反应 ,来自临床健康肉鸡群的YZ990 1和YZ990 2株呈弱阳性反应。对YZ990 1株和SD990 2株的PCR产物直接测序结果表明 ,这二个中国株的囊膜蛋白 gp85的氨基酸组成与原型株HPRS 10 3及美国分离株ADOL Hcl有 89%~ 93%的同源性 ,它们相互间的同源性是 92 %。其 3′端LTR区与原型株HPRS 10 3则有 95 %~ 97%的同源性 ,但中国的两株病毒在紧靠 3′端LTR的“E”成分中 ,出现了一个 139个碱基的缺失性突变 ,而代之以一个 11个碱基的插入序列。杜岩 崔治中 秦爱建 R.F.Silva L.F.Lee 2000病毒学报2000,16,4:131
2Bilirubin injury to neurons:contri-bution of oxidative stress and rescue by glycoursodeoxycholic ac-id显示文摘Brito M.A S.Lima A.Fernandes A.S.Falcao R.F.Silva D.A.Butterfield D.Brites 0,,02:1
3Inflammatory signalling path-ways involved in astroglial activation by unconjugated bilirubin显示文摘Fernandes A A.S.Falcao R.F.Silva A.C.Gordo M.J.Gama M.A.Brito D.Brites 0,,06:1
4Neuritic growth impairment and cell death by unconjugated bilirubin is me-diated by NO and glutamate,modulated by microglia,and prevent-ed by glycoursodeoxycholic acid and interleukin-10显示文摘Silva S.L A.R.Vaz M.J.Diogenes N.van Rooijen A.M.Sebastiao A.Fernandes R.F.Silva D.Brites 0,,07:1
5The Role of Nanodispersed Nitrides in the Sintering of Silicon Nitride Ceramics显示文摘The synthesis of ceramics based on silicon nitride using nanopowders of TiN andSi_3N_4 as additives was studied. The ceramic compositions were pressurelessly sintered under nitrogenatmosphere at different temperatures (1550℃, 1650℃ and 1750℃) with a heating rateof 10℃/min and a holding time of 2 h. The nanodispersed nitrides (NDN) were produced byelectric-arc plasma synthesis and characterized. The ceramic composites obtained with nanoparticlesof 1wt% to 5wt% TiN and 20wt% Si_3N_4 were characterized by scanning electron microscopy(SEM), atom force microscopy (AFM) and energy-dispersive spectrometry (EDX). The effect ofthe addition of nanodispersed powders on the mechanical properties and microstructure of Si_3N_4ceramics was investigated.M.GEORGIEVA G.VISSOKOV I.GRANCHAROV R.F.SILVA F.J.OLIVEIRA 2010Plasma Science and Technology2010,12,1:1
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