Objective To establish a specific,sensitive and applied method for the detection and differentiation of dengue virus types Ⅰ-Ⅳ,Japanese encephalitis virus and yellow fever virus.

In order to establish a rapid and sensitive method for detection of yellow fever virus, RNA of yellow fever virus were extracted from brain suspensions of infected sucking mice.

The object of the present study was to detect the Japanese encephalitis virus(JEV), yellow fever virus(YFV),West Nile virus(WNV) and St Louis encephalitis virus (SLEV) with the multiplex RT-PCR method after the specific primers of them had been designed.

Oligonucleotide microarray for detecting Japanese encephalitis virus and yellow fever virus;

Something about PM2 5 is summarized, such as collection and analysis, chemical constitutes, virus mechanism, and the influence on human's health and air visibility, advances in home and abroad.

This paper introduces the concept of the mobile phone virus,and its mode of transmission,as well as mobile phone communications network characteristics,the function of spread rate was proposed for the first time,and a transmission model based on the weighted networks is proposed,then some effective control methods are proposed.

The safety problems of GPRS (Gerneral Packer Radio Service) network are studied in this paper, which focuses on network scanning, mobile phone virus, anti-DDoS (Distributed Denial of Service) protection and application vulnerability.

Based on the sutra propagation model in complex networks and the characteristics of the small-world,a M-SEIR model was designed,which is more suitable for the simulation of mobile phone virus in the short message networks.