In order to know the influence of chemical disinfectant on free bacterial surface potential in sewage treatment system for exploring the mechanism of killing bacteria in sludge by chemical disinfectant,cell surface electric potential measuring method was used to measure the zeta potential of common free bacterial surface in active sludge.

Relationship between bacterioplankton and phytoplankton community dynamics during late spring and early summer in Lake Taihu;

The temporal and spatial distribution of bacterioplankton in a large scale marinculture located in Zhelin Bay,Eastern Guangdong Province,China;

The dynamics of bacterioplankton and contribution of picophytoplankton to primary production of phytoplankton in freshwater ponds;

Primary study on catalytic properties of free cells from nitrilase producing microorganism;

Mixed strain of free cells and different fermentative modes of batch and fed-batch fermentation were conducted to produce ethanol from dilute-acid lignocellulose hydrolysates.

The results indicated that the fibrous-bed bioreactor had more acid-resistant ability compared with the free cell fermentation.

During the period from November 2003 to April 2005,the lung samples of clinical piglets from 159 farms in different provinces were detected for Haemophilus parasuis by isolation and PCR.