By the methods of burrow depth,mark-recapture and burrow account,this paper investigated the Phrynocephalus vlangalii population density on zoige desert in September 2002.

During the years of 2001 and 2002,six times mark-recaptures were conducted on Phrynocephalus vlangalii,distributing on Zoigê grassland,northwestern Sichuan to study the growth and the growth differences between female and male(GDFM) living in natural habitat.

Mark-recapture, counting entrances to lizard holes and measuring depth of lizard holes were used to collect data on population ecology of Phrynocephalus vlangalii, distributed in Zuoergaigrassland, Northwest Sichuan, in 2001 and 2002.

Effects of particle magnetization,magnetic flux density,aerosol velocity and fill ratio of ferromagnet media on particle capture efficiency have been systematically studied.

The collection efficiency,impaction efficiency and capture efficiency were analyzed,respectively.

The capture efficiency of PM10 from coal combustion in high gradient magnetic field was studied using response surface methodology(RSM),which enables effect examinations of parameters with a moderate number of experiments.

Results show that,after turning on of the magnetic field,variation of inhalable particle capturing efficiency proceeds in three stages:it first slowly rises,then quickens and finally stabilizes at a .

According to the principles of the terminal guidance radar of missiles catching targets,a method to calculate the catching probability of missiles to targets under the condition of many targets is put forward.