亚皮秒太瓦脉冲激光与物质相互作用研究进展

当前亚皮称太瓦超短冲激光技术的发展为激光与物质相互作用领域提供了许劝人心的研究机会，从激光与单个原子的相互作用到激光等离子体中的集体效应，如原子的高度离化、Ｘ射线激光、等离子体波导，等离子体粒子加速器，快速点火方案等等，文章评述了最近几年这方面的研究进展。     

四元Heisenberg群上次拉普拉斯算子的m幂次的基本解

本文研究了四元Heisenberg群上次拉普拉斯算子的m幂次的基本解，该结论是Heisenberg群上结果的推广.本文利用了四元Heisenberg群上的Fourier变换理论构造了该群上次拉普拉斯算子的m幂次的基本解，并且给出了基本解的积分表示.     

蒽酮高分子复合物发光体的光老化研究

通过５５５ｎｍ单色光照射下的２小时人工老化和露天中２６个月自然老化。研究了蒽酮高分子复合物发光体的光老化性质，经过２６个月的自然老化发光峰值强度下降了４８％，树脂的光透过度下降了４０％，表明光老化的原因主要是树脂老化引起的。     

连续波磁控管中电子的运动

以电子在正交场中的运动为基础，详细分析了连续波磁控管中电子的运动过程及能量转化的情况，以便进一步认识连续波磁控管的工作原理。     

SYNTHESIS AND CATALYTIC ACTIVITY OF PLATINUM COMPLEX OF ACRYLATE TERPOLYMER WITH Se, N BIDENTATE LIGAND

1NTRODUCTIONTheacrylateterpolymer--supPOrtedsulfideplatinumcomplexanddisulfideplatinumcomplex['--2]werestudiedinthehydrosilylationofolefins.Itisfoundthattheyhavehighcatalyticactivityandreusedproperties.LiuXFetal.[3)synthesizedselena--crowneitherplatinumcomplexesandreportedtheircatalyticactivityofhydrosilylation.Clarketal.[4)reportedthatthecatalyticactivityofPiLL'Clz(L=PPh2,L'=S,N)ishigherthanthatofPtLZC12orPtL'ZC12inhydrosilylation.Inthispaper,wereportthesynthesisofanewacrylatete…     

A stochastic model for risk management in global supply chain networks

With the increasing emphasis on supply chain vulnerabilities, effective mathematical tools for analyzing and understanding appropriate supply chain risk management are now attracting much attention. This paper presents a stochastic model of the multi-stage global supply chain network problem, incorporating a set of related risks, namely, supply, demand, exchange, and disruption. We provide a new solution methodology using the Moreau–Yosida regularization, and design an algorithm for treating the multi-stage global supply chain network problem with profit maximization and risk minimization objectives.     

哈密顿矩阵的逆特征值问题

该文探讨了哈密顿矩阵的逆特征值问题, 得到了有解的充要条件、通解的表达式以及最小范数解.并给出了最佳逼近解的求法. 给出了相应的算法, 数值实例说明算法是可行的.     

Synthesis and characterization of a novel liquid crystal-bearing ionic mesogen

A new ionic liquid crystal bearing a sulphonate group in the mesogenic core, potassium 2-allyloxy-5-cholesteryloxycarbonylbenzenesulphonate, was synthesized. Its chemical structure was determined by various techniques including FTIR and ¹H NMR. Its liquid crystalline properties were characterized by DSC, POM and SAXS; it exhibits a smectic C mesophase. In dielectric constant measurements a maximum Δε value of -43.0 D was obtained at 210°C. The morphology of this ionic liquid crystal indicated a slant array of ionic mesogenic units under a static electric field.     

Asymmetric hydrogenation of simple ketones with planar chiral ruthenocenyl phosphinooxazoline ligands

Ruthenocenyl phosphinooxazoline ligands have been shown to be highly efficient catalysts in the asymmetric hydrogenation. Both simple aromatic and heteroaromatic ketones were examined and excellent conversions and enantioselectivities were achieved.     

The rate of convergence of q-Bernstein polynomials for

In the note, we obtain the estimates for the rate of convergence for a sequence of q-Bernstein polynomials {B_n,q(f)} for 0<q<1 by the modulus of continuity of f, and the estimates are sharp with respect to the order for Lipschitz continuous functions. We also get the exact orders of convergence for a family of functions , and the orders do not depend on α, unlike the classical case.