超空间上的连续对应与对应的闭图

本文的目的是在超空间上重新定义上半连续,下半连续和连续对应．改进了Ｋｌｅｉｎ在［１］中的定义７．１．１,得到了这些对应和它们的闭图的若干特征和性质,给出了子集网在下半连续对应中的应用     

On the numerical solution of nonplanar dust-acoustic super rogue waves in a strongly coupled dusty plasma

The occurrence of cylindrical and spherical low-frequency dust-acoustic freak waves (DAFWs) in a strongly coupled dusty plasma is numerically investigated in the framework of the phenomenological generalized hydrodynamic model. The basic equations are reduced to a modified/nonplanar nonlinear Schrödinger equation (mNLSE) using a reductive perturbation method. The existing regions of instability structures have been carefully identified. For studying the propagation of rogue waves in case of nonplanar (cylindrical and spherical coordinates), the mNLSE has been solved numerically. The effects of nonplanar geometries on the basic features of the DAFWs for the first- and second-orders rogue waves are discussed. Finally, our results are of relevance in ultradense situations where nonplaner geometrical effects are significant. In particular, we expect for our findings to be important to understand the DA breathers experimentally in a strongly coupled dusty plasma.     

Constructing super D-Kaup-Newell hierarchy and its nonlinear integrable coupling with self-consistent sources

How to construct new super integrable equation hierarchy is an important problem. In this paper, a new Lax pair is proposed and the super D-Kaup-Newell hierarchy is generated, then a nonlinear integrable coupling of the super D-Kaup-Newell hierarchy is constructed. The super Hamiltonian structures of coupling equation hierarchy is derived with the aid of the super variational identity. Finally, the self-consistent sources of super integrable coupling hierarchy is established. It is indicated that this method is a straight- forward and efficient way to construct the super integrable equation hierarchy.     

超级电容在中性束弧放电电源中的应用研究

介绍了超级电容的结构原理与电路模型,以及超级电容在托卡马克装置实验中的应用。综合分析了大功率离子源弧放电电源的供电特性以及HL-2A 装置1MW 中性束注入系统的弧电源供电电路拓扑。提出了一种基于超级电容储能的5MW 中性束注入离子源弧放电电源供电方案,它能减小所需的电网容量,具有更小的体积和更高的效率、控制简单、响应速度快等特点。提出了采用恒压控制方式的基于超级电容供电的5MW 中性束注入离子源灯丝电源方案,分析了该方案的可行性和技术优势。为均衡用许多超级电容串并联组合储能时单体超级电容的电压,提出了一种可靠、高效的电压均衡电路。     

MEH-PPV/SiO_2异质结发光机理和非晶SiO_2二次特性的研究

在薄膜电致发光中采用有机聚合物MEH-PPV和无机半导体SiO_2复合制成异质结发光器件,利用SiO_2的加速、倍增和离化的二次特性,实现了固态阴极射线发光.结构为ITO/SiO_2/MEH-PPV/SiO_2/Al的发光器件,其电致发光光谱的显著特征是有两个发光谱带.光谱中除了波长较长(峰值为583 nm)的MEH-PPV的激子发光谱外,还观察到了波长较短(峰值为403 nm)的蓝色发光谱,并且长短波的发光强度随着电压的不同而变化.电压较低时,只有长波光发射.当电压较高时,只有短波光存在.这种有两个谱带的发光是固态阴极射线发光的独特标志,它是一种全新的激发方式,引发出发光学中一些新而重要的问题.固态阴极射线发光理论的重要方面之一就足SiO_2的二次特性.文章研究了固态阴极射线发光动力学问题,高电场下SO_2二次特性及厚度对二次特性的影响.     

超疏水膜表面构造及构造控制研究进展

本文就表面构造对膜表面亲、疏水性的最新研究成果进行了概括,表面化学成分及化学结构聚集态是获得超疏水膜的基础,表面的形貌和微构造是维持超疏水性质的保障。利用含氟材料极低的表面能,将表面化学结构的聚集态,表面形貌微观构造及排列方式进行有机结合,将会获得理想的超疏水材料。     

宽谱光源光谱相干度的仿真研究

以傅里叶变换为基础 ,研究了具有任意谱形的宽谱光源的相干函数并实现了通用的宽谱光源相干特性仿真算法。计算了应用于干涉式光纤陀螺的各种宽谱光源的相干特性 ,分析了不同谱形以及光谱平滑度对光谱时间相干性的影响。对于宽谱光源 ,此法可以全面准确地仿真其相干特性。     

低热固相法制备纳米MnO2/CNT超电容复合电极的循环稳定性

To improve the charge/discharge cycle stability of a nanostructured manganese dioxide electrode for supercapacitor applications, a series of nano-MnO2/carbon nanotube (CNT) hybrid electrode materials with different mass fractions of CNTs were prepared. The materials were prepared using a room-temperature solid-grinding reaction betweenMn(OAc)2·4H2Oand NH4HCO3 in the presence of CNTs to obtain a precursor. This was followed by calcination and an acid-treatment process and the products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) surface analysis. XRD results indicated that the MnO2 in the composites was nanostructured 酌-MnO2. Electrochemical performance of the MnO2/CNT composite electrodes in 1 mol·L-1 LiOH alkaline aqueous electrolyte was studied and compared to a pure nano-MnO2 electrode without CNTs. The MnO2/CNT composite electrodes with 10% or 20% (w, mass fraction) CNTs showed far superior cycle stability than the pure MnO2 electrode. The MnO2/CNT composite electrode with 10% CNTs exhibited good cycling stability and also a high specific capacitance of 200 F·g-1 at a high charge/discharge current rate of 1000 mA·g-1.     

Super edge-connectivity of mixed Cayley graph

A graph X is max-λ if λ(X)=δ(X). A graph X is super-λ if X is max-λ and every minimum edge-cut set of X isolates one vertex. In this paper, we proved that for all but a few exceptions, the mixed Cayley graph which is defined as a new kind of semi-regular graph is max-λ and super-λ.     

Energy identities and blow-up analysis for solutions of the super Liouville equation

In this paper, we study the super Liouville equations, a natural generalization of the Liouville equation. We establish energy identities and a precise blow-up analysis for solutions of the super Liouville equations.