Study on first decocted Radix Aconit i Preparata and later decocted Rad ix et Rhizomea Rhei in Wenpi Decoction Simultaneous determination of 11 constituents in Rhei Radix et Rhizoma by HPLC Studies on the Quality Standard of Dachengqitang Granule Opinion of Colon-targeting Delivery about Rhubarb Extract as a Purgative Study on determination of anthraquinones in Dachengqi Tang residues of Magnolia officinalis and Citrus aurantium removed in decoction process Preparation and Purification of Free Anthraquinones Extracted from Rheum Feasibility study of QAMS for quantitative analysis of multiple structural types of ingredients in Zhizi Jinhua pill Study on in vitro transdermal absorption of rhubarb free anthraquinones in Dasuan Xiaohuang Pasta