Tests are conducted on the mutagenicity and acute toxicity of raw water sample,tap water sample,and filtered water sample from two sources by means of Ames test and luminescent bacterium bioassay.

In the field of leaving-factory logistics,there still not generic quantitative analysis method in theory.

The paper analyzes the essence of leaving-factory logistics and based on some features of leaving logistics, it applies agent-theory in analyzing the monitoring mechanism of leaving-factory logistics information sharing under the symmetric information.

The leaving-factory logistics is a very important part of iron logistics, a well-done leaving-factory logistics can not only reduce the operation cost and management cost, moreover can reduce the customer response time, enhances the system flexibilit.

Moreover,we study on the water head and treated water fr.

The method of HPLC was applied to examine exactly the contents of trace intracellular and extracellular LR, YR, RR microcystin in source water and treated water, of which the samples were collected from August 1998 to June 1999 and concentrated by ODS silica gel column.

Increasement tendency of nitrite nitrogen in treated water of water treatment works was analysed.