A Study of the Application of Photoexcited TiO2 Particle to Cancer Treatment

The purpose of the present paper is to introduce such a new application of photoexcited TiO₂ to the area of biology that has been investigated in our laboratory. The behavior of cultured celles on the photoexcied TiO₂ electrode surface and the cell killing effect of photoexcited TiO₂ particles are described. And the possible application of this cell killing effect of photoexcited TiO₂ particles to cancer treatment is discussed.     

锰铜复合除藻剂灭活铜绿微囊藻效能研究

以高锰酸盐和酸溶氯化亚铜复配制备了锰铜复合除藻剂(MCC),通过静态实验研究MCC对铜绿微囊藻的去除效果及药效时间,考察了MCC除藻对水样pH值的影响,探讨其作为新型除藻剂的可行性. 结果表明:铜试剂A与锰试剂B的最佳复配比为0.5～1.5∶1.0;投药10d内浊度、OD420和叶绿素a去除率分别为67.82%,77.98%和97.04%;投药16d后浊度降到6.16NTU,叶绿素a降到1.048μg·L-1,去除率分别达到77.40%和99.48%;水样pH值随MCC中铜试剂的增加而降低,在最佳复配比时,pH值在7～8之间. 该研究为新型除藻剂的研发奠定了基础.     

试析李昂《杀夫》中的女性形象

《杀夫》是李昂的代表作品之一,它揭示了封建男权社会下生为女人不是人的女性悲剧命运。不论是吃不饱的林市阿母,饱受经济、性、精神压迫的林市,还是深受封建思想荼毒而人性扭曲的阿罔官,抑或是相对自由但同样走不出厄运的妓女金花,都共同反映了妇女悲惨的生存状况。作品的批判矛头直指男性沙文中心主义。     

DpNPV多角体蛋白拉曼光谱的研究

研究了马尾松毛虫核型多角体病毒多角体蛋白的拉曼光谱。结果表明，ＤｐＮＰＶ多角体蛋白的二级结构主要为α螺旋和无规卷曲，后者含有大量的β回析，多角体蛋白的侧链Ｃ－Ｃ－Ｓ－Ｓ－Ｃ－Ｃ－构型为反式－扭曲－反式。     

Markov Chains in a Field of Traps

We consider a Markov chain on a countable state space, on which is placed a random field of traps, and ask whether the chain gets trapped almost surely. We show that the quenched problem (when the traps are fixed) is equivalent to the annealed problem (when the traps are updated each unit of time) and give a criterion for almost sure trapping versus positive probability of nontrapping. The hypotheses on the Markov chain are minimal, and in particular, our results encompass the results of den Hollander, Menshikov and Volkov (1995).     

Behaviors of the MS2 virus and related antibodies in capillary isoelectric focusing with whole-column imaging detection

Capillary isoelectric focusing (CIEF) has potential importance for the study of viruses. CIEF with whole-column imaging detection (WCID) is a novel CIEF mode, providing the advantages of high resolution, high speed, and easy method development. To facilitate the application of CIEF-WCID to the immunoassay of viruses, a basic knowledge of related aspects is necessary. In this study, the MS2 bacteriophage was used as a virus model, and the behaviors of MS2 and related antibodies in CIEF were investigated with UV absorbance-WCID and laser-induced fluorescence (LIF)-WCID. The adsorption of the virus and antibodies on the capillary wall was found to be the critical issue in method development. Addition of salt was found to be an effective way to reduce the adsorption and to improve peak shape. The formation of an immunocomplex, which forms the basis of an immunoassay, was monitored with CIEF-WCID. In comparison with UV-WCID, LIF-WCID was advantageous due to its higher detection sensitivity and the elimination of precipitation. Utilization of the noncovalent fluorescent dye, NanoOrange, was demonstrated to be a potential approach for the fluorescent labeling of the virus model and antibody and the associated immunocomplex. The change in microheterogeneity during the immune interactions at different ratios was also observed.     

COM病毒机制的研究

随着网络技术的不断进步和电子商务的蓬勃发展 ,网络与计算机的安全问题也被迅速地提到日程上来 ,而在诸多与安全相关的问题中间 ,无疑计算机病毒是很重要的一个环节。文中就COM病毒的一般原理作一番分析 ,并论述其防治方法。     

山东省普通级大、小鼠病原体携带状况的初步调查

目的　通过对山东省大部分单位普通级大、小鼠病原体携带状况的调查 ,了解省内实验动物质量情况 ,以利于新国标的宣传和执行。方法　选取省内不同地区、不同单位的普通级大、小鼠 ,按清洁级标准对其所携带细菌病毒进行检测。结果　小鼠肝炎病毒 (MHV)和小鼠仙台病毒 (SV)血清抗体阳性率分别为 11%和 19%。小鼠淋巴细胞脉络丛脑膜炎病毒 (LCMV)、汉坦病毒 (HV)和鼠痘病毒 (Ect )血清抗体均为阴性。大鼠HV、SV血清抗体均为阴性。细菌检测结果 ,Wistar大鼠支气管鲍特杆菌阳性率为 8 3% ,其余所检项目均为阴性 (支原体、泰泽氏菌未能检测 )。结论　山东省实验动物质量有了明显提高 ,达到了普通级要求 ;但是 ,MHV和SV的存在以及Wistar大鼠支气管鲍特杆菌的隐性感染 ,说明普及清洁级大小鼠是很有必要的     

猴B病毒BVgD-多肽ELISA检测方法的建立

目的建立猴B病毒抗体BVgD-多肽ELISA检测方法。方法以Western-blot分析猴B病毒糖蛋白D(BVgD)上的多肽抗原决定簇(BVgD-多肽)的抗原性,采用方阵滴定法,确定ELISA法的最佳实验条件。用灭活BV全病毒、HSV-1和BVgD-多肽三种抗原系统对猴血清样品进行平行检测,比较分析了三种系统的抗原性特点。并且将检测结果与美国BV抗体检测试剂盒的检测结果进行了比较。结果建立了猴B病毒抗体的BVgD-多肽ELISA法,研究结果表明本方法与BV全病毒和以HSV-1病毒为抗原的试剂盒相比,敏感性较低、特异性较好,避免了制备BV抗原对实验室要求高和HSV-1抗原引起的非特异性问题。检测结果与美国实验室BV抗体检测结果的符合率达85%。     

Global stability of a virus dynamics model with cure rate and absorption

In this paper, we investigate a mathematical model which takes account the cure of infected cells and the loss of viral particles due to the absorption into uninfected cells. The global stability of the model is determined by using the direct Lyapunov method for disease-free equilibrium, and the geometrical approach for chronic infection equilibrium.