Effects of micro-oxygen on quality of grape wine in aging;

The method for determination of trace oxygen in propylene by gas chromatography was established.

This paper describes a real-time and on-line automatic testing equipment for trace moisture and trace oxygen in high-purity gas,the frame and performance characteristics of the equipment are discussed in detail,including hardware system,software systems,main specifications,the key technologies and innovations resolved in the research process.

During May 22 to December 31 of 2005,continuous measurements of some trace gases at Xinglong Station,atmospheric background observation network of Chinese Academy of Sciences were carried out.

Exploration on prevention of micro-air from entering blood vessel during vein injection;

In order to verify the compressor response to micro injection,experiments at various injection comfigurations are performed,which include different injection angles,axial gaps between injector and blade leading edge and the amount of air.

But the mechanism of stall suppression of micro injection and its unsteady response is still unknown and difficult to explore by experiment.

Since the stratospheric trace gases play an important role in the ecological environment and climate system on the earth, more attentions are paid on the trends of stratospheric trace gases including ozone, nitrogen oxide, nitrogen dioxide, chlorine hydride, water vapor, and methane etc.