线性时滞差分方程的振动性

研究了一次差分方程解的振动性，获得了一些更好的充分条件，改进了一些文献中的相应结果。     

Linking innate and adaptive immunity

The evolution of mechanisms to fight pathogens in plants and animals is reflected in the complexity of the components of their so-called immune systems. Higher vertebrates have evolved     

关于Hurwitz zeta 函数的均值公式

设 ζ(s,α)为 Hurwitzzeta函数 .当 Re(s) >1时 ,定义ζ(s,α) =∑∞n=01(n α) s(实数 α>0 ) ,ζ″(s,α)表示 ζ(s,α)关于复变量 s的二阶导数 .利用解析方法及三角和估计给出了 Hurwitz zeta函数ζ(s,α)对参数α的二次积分均值的一些很有趣的渐近公式 .     

通电光栅对光的衍射

报道了一种栅格上有电流通过的新型光栅（电光栅）．入射到该光栅上的光，经光栅透射和反射后形成的衍射条纹，会发生收缩或扩展；光的偏振面发生旋转可产生法拉第效应．该光栅比同光栅常数的光栅具有较高的分辨率，作为一种提高光栅分辨率的新光电元件，可望应用于光电通讯     

On functional decomposition of multivariate polynomials with differentiation and homogenization

This paper gives a theoretical analysis for the algorithms to compute functional decomposition for multivariate polynomials based on differentiation and homogenization which were proposed by Ye,Dai,and Lam(1999) and were developed by Faugere,Perret(2006,2008,2009).The authors show that a degree proper functional decomposition for a set of randomly decomposable quartic homogenous polynomials can be computed using the algorithm with high probability.This solves a conjecture proposed by Ye,Dai,and Lam(1999).The authors also propose a conjecture which asserts that the decomposition for a set of polynomials can be computed from that of its homogenization and show that the conjecture is valid with high probability for quartic polynomials.Finally,the authors prove that the right decomposition factors for a set of polynomials can be computed from its right decomposition factor space.     

基于无衍射光及虚拟探测器的三角测量系统

提出一种新型激光三角测量系统。该系统用无衍射光作测量光束，用虚拟探测器扩展探测器尺寸。与传统激光三角测量相比，该系统在保持高测量精度及高分辨率的同时，扩展了测量范围。且系统机构简单，测量速度快。     

de Sitter时空背景下的熵

从ｄｅＳｉｔｔｅｒ时空背景下的Ｋｌｅｉｎ－Ｇｏｒｄｏｎ方程出发，利用Ｂｒｉｃｋ－ｗａｌｌ方法计算了宇宙的自由能和熵。结果表明，宇宙的熵与Ｓｃｈｗａｒｚｓｃｈｉｌｄ黑洞一样，也为视界面积的１／４。可见，ｂｒｉｃｋ－ｗａｌｌ方法具有更广泛的适用于，不但可以计算黑洞的熵，而且可以计算宇宙的熵。     

The EM scattering from one-dimensionally lossy fractal surfaces

The EM scattering from rough surface has been investigated in the past years. Periodic and random models are often used in modeling the rough surface. Recently, the fractal geometry is rapidly improved. It provides a new way to model the rough surface whose characteristics are long-range order and short-range disorder. In this paper, A fractal function is used to model the rough surface. A scattering coefficient for calculating the angular distribution and the amount of energy in the spectrally scattering field to the fractal characteristics of the surfaces by finding their analytical expressions is derived by using the Kirchhoff solution. In the end, we calculate some scattering patterns. Supported by the National Natural Science Foundation of China Gao Huotao: born in 1964, Graduate student     

利用掩蔽系数同时测定中草药中的钼和铜(PF-PAN-TritonX-100体系)

本文研究了在混合显色剂（ＰＦ＋ＰＡＮ）的胶束体系中，利用掩蔽系数同时测定中草药中钼和铜的光度分析法．实验表明：在混合体系中，钼量在０～１０μｇ，铜量在０～５０μｇ的范围内符合比耳定律，ε′Ｍｏ＝９２×１０４，ε′Ｃｕ＝１５×１０４．该法用于中草药样品的分析，结果令人满意，回收率可达９２％～１１１％．     

高压脉冲电场的抑菌特性

:高压脉冲电场技术是近年来发展起来的一项很有前景的技术 ,它具有传递均匀、处理时间短、产热少、对食品风味和营养特性影响小等特点 ,能克服食品加热处理或化学单元操作带来的不良影响。综述了高压脉冲电场 (HPEF)产生机理及对微生物的作用特性