Spectrum analysis of H_n, a polysaccharide extracted from the fruits of Hippophae rhamnoides polysaccharide;

Activity experiment of Hippohaerhamnoides L Leaves polysaccharide in scavenging superoxideradicah hydroxylradical and lipid radical has been studied to provide scientific cue for the use of Hippohaerhamnoides LThe crude polysaccharide has been fractionated by acidic ethanol.

The extraction on polysaccharide of Radix Glehniae and immuno-regulating effects on Yin deficiency mice;

At the heavy and coarse sediment region in the middle reaches of the Yellow river basin,because of the high population density,insufficient cereals supplement,deficient fuel ,fertilizer and forage resource,and serious soil erosion, the contradiction between population and environment becomes the principle factor which restricts the economic development of this region.