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Tsvetelina Doncheva Amgalan Solongo Nadezhda Kostova Yadamsuren Gerelt-Od Dangaa Selenge 《Natural product research》2015,29(9):853-856
A new type of isoquinoline alkaloid leptopyrine was isolated from the aerial parts of Leptopyrum fumarioides L. (Ranunculaceae) of Mongolian origin. The known alkaloids protopine and thalifoline were isolated for the first time from this the species. All structures were established by physical and spectral analyses. 相似文献
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Lutbat Yadamsuren Enkhbat Rentsen Suk-Hwan Lee Won-Joo Hwang 《Optimization Letters》2014,8(3):889-901
We show how to solve the parametric utility maximization problem with a continuous parameter in a finite number of steps in order to obtain a solution with given accuracy. Also, we propose a new approach for the discretization of time for the parametric utility maximization problem with Lipschitz utility function. Some numerical results are provided. 相似文献
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A new discriminative approach to routing inspired by the large margin criterion serving as a basis for support vector machines is presented. The proposed formulation uses the benefit of the dualization convex program, and it is possible for standard solvers to learn the weighting metrics of the shortest path routing. In order to demonstrate this and due to its simplicity, the single path flow allocation problem is considered in this article. It was found that the weight settings performed within a few percent of that of the optimal general routing where the flow for each demand was optimally distributed over all paths between the source and destination. 相似文献
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