[Expression and characterization of formate dehydrogenase gene in Klebisella pneumoniae].

Glycerol can be converted to 1,3-propanediol by the anaerobic fermentation of Klebsiella pneumoniae, during which reducing equivalent NADH was consumed. Therefore, the availability of NADH would be critical for the yield of 1, 3-propanediol. In this paper, formate/formate dehydrogenase system was used for the regeneration of in vivo NADH and the improvement of 1, 3-propanediol production.

[Study on the application of geographic information system in spatial distribution of hemorrhage fever with renal syndrome in China].

Objective: To analyze the spatial distribution of hemorrhagic fever with renal syndrome (HFRS) in China by geographic information system, and to draw up a map on HRFS risk areas.

Methods: A set of database was set up using the information collected and linked to electronic maps of China in a software ArcGIS 8.01 from 41 HFRS surveillance sites during 1995 - 1998.