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51.
Separate spatial soliton pairs in a biased series centrosymmetric photorefractive crystal circuit 总被引:1,自引:0,他引:1
It is shown theoretically that three types of separate soliton pairs: bright-bright, bright-dark, and dark-dark, can be established in a biased series circuit consisting of two centrosymmetric photorefractive crystals and the two solitons in a separate soliton pair can affect each other by the light-induced current. The effects of the intensities of soliton beams and background lights on the normalized profiles of solitons are discussed. 相似文献
52.
53.
This paper analyses perturbations of Noether symmetry, Lie symmetry, and form invariance for super-long elastic slender rod systems. Criterion and structure equations of the symmetries after disturbance are proposed. Considering perturbation of all infinitesimal generators, three types of adiabatic invariants induced by perturbation of symmetries for the system are obtained. 相似文献
54.
55.
The compatible carbon-silicon complex materials originated from precursor diglycerylsilane (DGS) and sugar-modified silane
N-(3-triethoxysilylpropyl)gluconamide (GLS) have gained substantial popularity by demonstrating admirable properties to stabilize
entrapped biomolecules. The microenvironment inside these materials, especially the distribution of sugar moieties inside
the matrix, which is likely the most critical factor determining compatibility of these materials, still remains unclear.
To deeply investigate the biocompatibility mechanism of these materials, we have adopted two different preparation routes
for these materials by introducing GLS into the starting DGS sol stage, but things are different after the DGS gel is formed.
A fluorescence probe rhodamine 6G is introduced herein in the DGS sol to monitor the distribution of GLS moieties, as well
as the evolution of the microenvironment inside resulting materials. All in all, the findings demonstrated that the timing
of GLS addition plays a critical role in controlling the evolution of the inner structure of materials, suggesting that this
factor provides a promising route to tune the properties of the resulting materials.
Supported by the National Natural Science Foundation of China (Grant No. 20876176), Scientific Research Foundation for the
Returned Overseas Chinese Scholars by the State Education Ministry, Key Project of Chinese Ministry of Education (Grant No.
109100), Doctoral Project of Shandong Province (Grant No. 2008BS09013), Research Foundation of Key Laboratory of Carbon Materials,
Institute of Coal Chemistry, CAS (Grant No. KFJJ0506), and Natural Science Foundation of Shandong Province (Grant No. Q2007B02) 相似文献
56.
Ji-Ming Guo 《Linear algebra and its applications》2006,413(1):59-71
This paper investigates how the Laplacian spectral radius behaves when the graph is perturbed by adding or grafting edges. 相似文献
57.
In this paper, we study the convergence of Gauss-Newton's like method for nonlinear least squares problems. Under the hypothesis that derivative satisfies some kind of weak Lipschitz condition, we obtain the sharp estimates of the radii of convergence ball of Gauss-Newton's like method and the uniqueness ball of the solution. 相似文献
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59.
为保障国家石油安全、保障国民经济安全运行,本文根据石油安全预警的特点,采用神经网络方法进行预警,设计了BP神经网络模型,应用BP神经网络建立了中国石油安全预警系统,并进行了预警研究和实证分析,得出我国石油安全属于重警区,需加强安全防范。 相似文献
60.
In this paper, we have studied the atomic population difference and the atomic tunneling current of twocomponent Bose-Einstein condensates with a coupling drive. It is found that when the two-component Bose-Einstein condensates are initially in the coherent states, the atomic population difference may exhibit the step structure, in which the numbers of the step increase with the decrease of the Rabi frequency and with the increment of the initial phase difference. The atomic population difference may exhibit collapses, and revivals, in which their periods are affected dramatically by the Rabi frequency and the initial phase difference. The atomic tunneling current may exhibit damping oscillation behaviors, and exist the step structure for the time range of 10-10 ~ 10-9 second. 相似文献