Mercury concentration and its distribution in Nycticorax nycticorax and Chinese Ardeola bacchus fledglings at Huangpu District of Guangzhou City,China Study on the Structure of Phytoplankton Community and Water Quality Monitoring in Huangpu River Preparation of Shichangpu Double Layer Tablets Studies on the Preparation of Chinese Traditional Herbal Oral Liquid by Adsorption and Clarification-Ultracentrifugation-Microfiltration Method Cloning and Expression Analysis of GpUCH Gene in Grimmia pilifera Niche Analysis of Main Populations of Plants Communities in the Restoring Succession Process of the Grassland in Huangpuchuan Watershed THE CHARACTERS AND ORIGIN OF THE FLORA FROM THE BIG BEND GORGE OF YALUTSANGPU (BRAHMABUTRA) RIVER, EASTERN HIMALAYAS Analysis of Constituents of Essential Oil from Anemone altaica Fisch. ex C.A.Mey. Visual Simulation of Forest Growth Based on GPU and Terrain Paging NEW TAXA OF FAGACEAE FROM DULONGJIANG