The methane oxidation potential of soils in tidal marshes of the Yellow River Estuary and its responses to import of organic matter Analysis of Volatiles from Irradiated Yeast Extract Mechanism exploration on synthesis of secondary metabolites in Sorbus aucuparia cell cultures treated with yeast extract Study on Radiosterilization Processing of Yeast Extract Optimization of semi-artificial diet and temperature for rearing the codling moth Cydia pomonella (L.) Studies on Cell Suspension Culture and Plant Regeneration in Rice