In this paper, by using the sine-cosine method, the extended tanh-method, and the rational hyperbolic functions method, we study a class of nonlinear equations which derived from a fourth order analogue of generalized...In this paper, by using the sine-cosine method, the extended tanh-method, and the rational hyperbolic functions method, we study a class of nonlinear equations which derived from a fourth order analogue of generalized Camassa-Holm equation. It is shown that this class gives compactons, solitary wave solutions, solitons, and periodic wave solutions. The change of the physical structure of the solutions is caused by variation of the exponents and the coefficients of the derivatives.展开更多
轮状病毒(Rotavirus,RV)是引起婴幼儿及幼龄动物急性腹泻甚至死亡的重要病原。2009年,首次在幼龄大熊猫粪便中分离到RV,被确定为A组,并将其命名为大熊猫轮状病毒(Giant Panda Rotavirus,GPRV)CH-1株。GPRV CH-1株主要感染断奶后的大熊猫...轮状病毒(Rotavirus,RV)是引起婴幼儿及幼龄动物急性腹泻甚至死亡的重要病原。2009年,首次在幼龄大熊猫粪便中分离到RV,被确定为A组,并将其命名为大熊猫轮状病毒(Giant Panda Rotavirus,GPRV)CH-1株。GPRV CH-1株主要感染断奶后的大熊猫,引起急性传染性、顽固性腹泻甚至死亡,这对大熊猫的健康造成了严重的危害。本文介绍了GPRV CH-1株的基因结构和病毒蛋白结构及其生物信息学分析学以及该病的诊断方法和防治措施,以期为该病致病机制及疫苗研究提供参考。展开更多
In this paper, we analyze the generalized Camassa and Holm （CH） equation by the improved element-free Galerkin （IEFG） method. By employing the improved moving least-square （IMLS） approximation, we derive the for...In this paper, we analyze the generalized Camassa and Holm （CH） equation by the improved element-free Galerkin （IEFG） method. By employing the improved moving least-square （IMLS） approximation, we derive the formulas for the generalized CH equation with the IEFG method. A variational method is used to obtain the discrete equations, and the essential boundary conditions are enforced by the penalty method. Because there are fewer coefficients in the IMLS approximation than in the MLS approximation, and in the IEFG method, fewer nodes are selected in the entire domain than in the conventional EFG method, the IEFG method should result in a higher computing speed. The effectiveness of the IEFG method for the generalized CH equation is investigated by numerical examples in this paper.展开更多
文摘In this paper, by using the sine-cosine method, the extended tanh-method, and the rational hyperbolic functions method, we study a class of nonlinear equations which derived from a fourth order analogue of generalized Camassa-Holm equation. It is shown that this class gives compactons, solitary wave solutions, solitons, and periodic wave solutions. The change of the physical structure of the solutions is caused by variation of the exponents and the coefficients of the derivatives.
文摘轮状病毒(Rotavirus,RV)是引起婴幼儿及幼龄动物急性腹泻甚至死亡的重要病原。2009年,首次在幼龄大熊猫粪便中分离到RV,被确定为A组,并将其命名为大熊猫轮状病毒(Giant Panda Rotavirus,GPRV)CH-1株。GPRV CH-1株主要感染断奶后的大熊猫,引起急性传染性、顽固性腹泻甚至死亡,这对大熊猫的健康造成了严重的危害。本文介绍了GPRV CH-1株的基因结构和病毒蛋白结构及其生物信息学分析学以及该病的诊断方法和防治措施,以期为该病致病机制及疫苗研究提供参考。
基金supported by the Natural Science Foundation of Ningbo City,Zhejiang Province,China (Grant Nos. 2012A610038 and 2012A610023)the Natural Science Foundation of Zhejiang Province,China (Grant No. Y6110007)
文摘In this paper, we analyze the generalized Camassa and Holm （CH） equation by the improved element-free Galerkin （IEFG） method. By employing the improved moving least-square （IMLS） approximation, we derive the formulas for the generalized CH equation with the IEFG method. A variational method is used to obtain the discrete equations, and the essential boundary conditions are enforced by the penalty method. Because there are fewer coefficients in the IMLS approximation than in the MLS approximation, and in the IEFG method, fewer nodes are selected in the entire domain than in the conventional EFG method, the IEFG method should result in a higher computing speed. The effectiveness of the IEFG method for the generalized CH equation is investigated by numerical examples in this paper.
