The paper introduced the theory, structure and logging methods of UCT well logging technology and analyzed the application status of UCT well-log infonnation.

Effect of nitrogen and phosphorus removal of UCT process

UCT process was used to treat low-concentration wastewater in a WWTP in Guangdong Province.

During the past two years after being put into operation,the effluent quality has reached the first level B criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002),proving that the UCT process is feasible for wastewater with low carbon source concentration while relatively high nitrogen,phosphorus and suspended solids.

Application of key and display chip ZLG7289A in the instrument and meter;

The paper summarizes the method of field checkout and demarcate of every kind of testing instrument and meter and points out some problems in measure work.

This text analyse lightning protection for instrument and meter of mine,expatiate on design idea,counter-measure,and daily maintenance and inspection routine for lightning protection of mine.

Physical and chemical properties of polytetrafluoroethylene are intro duced,advantages and disadvantage s of various common corrosion protection materials are compared,selection of materials fr om corrosive media is provided,and a pplications of polytetrafluo-roethylene on instruments are intro duced.

In recent years,public bidding is being adopted in instruments purchasing.

Maintenance Technology of Chemical Instruments;

Design of the database about instrument on Visual Foxpro;

A analysis method of the instrument reliability;