Simultaneous determination of four alisols in Rhizoma Alismatis by RP-HPLC Research on appearance colour information of Rhizoma Alismatis processing pieces Anti-inflammatory Activities and Effect of Rhizoma Alismatis on Immune System Study on extracting process of ethanol extract with hypouricemic effect from Rhizoma Alismatis Study on dynamic of chemical components of Rhizoma Alismatis and Evodia rutaecarpa in their compatibility