Gemology characteristics and identification of those familiar black jade in market;

And preliminary analysis on the ornamental stones of jade are made.

Illite jade, in vein, was discovered in some copper mine, located in Daye county, HubeiProvince, and is a rind hydrothermal alteration rock from anorthosite.

Most of jade resources in Shimian area belong to medium and low grade jade material On the basis of quality,color and figure,the jade may be divided into ivory jade,opal jade,pink jade,green jade and jasper From geological setting,occurrence of orebody and structure and texture of ore it is concluded that the jade deposits are contact metamorphic and dynamometamorphic one

Growing method for different black corn kinds;

The antioxidation capacity in vitro and scavenging free radical capacity of seed pericarp extracts of black rice, black soybean and black corn was compared by means of oxidative extinction of free radical acting on fluorescence regent and biological chemiluminescence.

Study on processing technology of yoghurt with extruded black sweet corn meal;

The black sweet corn was used as raw material in this experiment to extract pigment,the effect of different factorson extraction of pigment with orthogonal design test was investigated.

In this paper,the pigment extraction and stability of black sweet corn have been studied.