Optimization of Processing Technique of Sparganium stoloniferum by Orthogonal Experimental Design Optimization of wet ultrafine grinding technology for Hirudo extraction Preparation of anticoagulant peptide from casein and study on thrombolysis and anticoagulation in vitro Anticoagulant Activity of the Extracts from Different Part of Panax notoginseng (Burk.) F.H.Chen In vitro anticoagulant activity of different processed products of Whitmania pigra by water extraction and bionic extraction