DDMP

Usually, it encounters dynamic group membership in practical multicast applications. Adopting the idea of Greedy algorithm, this thesis presents a delay constraint dynamic multicast routing algorithm DDMP, based on k-shortest paths, finds a path for the node which apply for join in the tree.

最后，由于在实际组播应用中，通常面临着组播成员的动态变化的问题，论文借鉴了贪婪算法的思想，提出一个基于K条最短路径算法的时延约束动态组播路由算法DDMP。

Total glycosides were extracted from soybean hypocotyl. The Group B saponin Ba and Bb, Group E saponin Bd and Be and DDMP saponin α g and β g were isolated and purified by C18 column chromatography and high-performance liquid chromatography ( HPLC).

从大豆胚轴提取总糖甙，以C18柱层析法和高效液相色谱法（HPLC）分离纯化B类皂甙Ba和Bb、E类皂甙Bd和Be、DDMP皂甙αg和βg。