Radioactivity background of soil environment and status investigation in Daqing region;

The significance of single background quality control chart in monitoring long-term stability of the thyroid function equipment;

Developing a system for measuring coincidence Doppler broadening spectrum of positron annihilation radiation with very low background;

Investigation of background value of some indexes in flour;

The background value of concentration of the petroleum hydrocarbons in mollusc along the coast has been calculated.

The effect of background constituents on the degradation of 2,4-D in aqueous solution by O3/H2O2 process;

Effect of background constituents on the catalytic ozonation of nitrobenzene was investigated.

Gongga turn out to be representing the atmosphere background of the southwest of China.