Dynamics of radiation induced isomerization for HCN-CNH

We have analyzed the dynamics underlying the use of sequential radiation pulses to control the isomerization between the HCN and the CNH molecules. The appearance of avoided crossings among Floquet eigenphases as the molecule interacts with the radiation pulses is the key to understanding the isomerization dynamics, both in the adiabatic and nonadiabatic regimes. We find that small detunings of the incident pulses can have a significant effect on the outcome of the isomerization process for the model we consider.     

数学实验课的教学模式研究

本文主要探讨工科数学教学中数学实验课的多个层次和开设数学实验课的几种方式 ,并且介绍我们的一些具体做法和面临的一些问题     

General Structures of Block Based Interpolational Function

We construct general structures of one and two variable interpolation function,without depending on the existence of divided difference or inverse differences,and we also discuss the block based oscula...     

新癌药物的电化学研究1: 一种Fe(III) Schiff碱配合物的基本电化学性质及其与DNA的相互作用

研究了一种自合成的Schiff碱配合物的电化学行为及其与氧和DNA的相互作用。发现此种Schiff碱配合物能与氧发生相互作用而具有吸氧功能, 并对氧的电还原有催化作用, 同时还发现dsDNA能与此种Schiff碱配合物发生较强的相互作用, 特别是Fe(II)Schiff碱配合物更易与dsDNA结合。     

多吡啶-铜(Ⅱ)-L-α-氨基酸配合物与DNA的作用

应用电子吸收光谱、荧光光谱、粘度测定及琼脂糖凝胶电泳法研究了多吡啶-铜(Ⅱ)-L-α-氨基酸型配合物:[Cu(TATP)(L-Val) (H2O)]ClO4·0.5H2O (1)、[Cu(IP)(L-Val)(H2O)]ClO4·1.5H2O (2) 、[Cu(TATP)(L-Tyr)(H2O)]ClO4·H2O(3)...     

Simulation of 200–400 Me V/u ~(12)C+~(12)C elastic scattering on SHARAQ spectrometer

In order to further obtain the information of three-body force(TBF) from 200–400 Me V/u12C+12C elastic scattering, we plan to perform this experiment on a SHARAQ spectrometer. Based on the experimental condition of the Radioactive Ion Beam Factory(RIBF)-SHARAQ facility, a simulation is given to find a compromise between the better energy and angular resolutions, and higher yield by optimizing the target thickness, beam transport mode, beam intensity and angular step. From the simulation, we found that the beam quality mainly limits the improvements of energy and angular resolutions. A beam tracking system as well as a lateral and angular dispersionmatching technique are adopted to reduce the influence of beam quality. According to the two angular settings of SHARAQ as well as the expected cross sections on the basis of the theoretical model, the energy and angular resolutions, and statistical accuracy are estimated.     

Rayleigh-Taylor不稳定性的Runge-Kutta间断有限元模拟

 采用发展后的间断有限元方法,对Rayleigh-Taylor不稳定性进行了数值模拟。在计算中采用Level-Set方法进行界面追踪,用虚拟流体方法（Ghost Fluid Method,GFM）对界面附近物理量进行等压装配。对两个典型的Rayleigh-Taylor不稳定性算例的数值研究结果表明,采用该方法计算含有接触间断的多介质流体力学问题是有效的,在交界面附近不出现伪振荡,具有较高的分辨率。     

广义 n-皇后问题

它们分别称为Γ_(?) 的第 i 行 ,第 j 列,第 p 条左对角线与第 q 条右对角线.形象地,第 p 条左对角线是从棋盘左下角数起的第 p 条从左上方到右下方的斜线;而第 q 条右对角线是从棋盘左上角数起的第 q 条与左对角线正交的斜线.对Γ_(?) 的任一子集 X,记     

二氧化铅修饰玻碳电极的镀膜/循环伏安法制备及电催化性能

采用镀膜/循环伏安法制备了PbO2修饰玻碳电极.在Pb(NO3)2溶液中,在-0.7 V 将Pb膜沉积在玻碳电极表面,然后在5 mol/L NaOH溶液中以100 mV/s速度在-1.0～1.0 V循环伏安扫描20次,PbO2膜均匀沉积在玻碳电极表面.采用交流阻抗法监控电极修饰每一过程,环境扫描电镜表征电极表面形貌.探讨了PbO2膜的沉积机理及其电化学行为,表面活性位点覆盖量为7.5×10-10 mol/cm2.PbO2修饰电极对H2O2电氧化表现出较高催化活性,起始氧化电位低至0.1 V,考察了影响催化活性的因素.计时电流法测定H2O2 (工作电位0.40 V),响应时间小于2 s; 线性范围为5.0 ×10-6 ～ 5.5×10-4 mol/L;检出限1.1×10-6 mol/L (信噪比为3).在实际水样中H2O2测定结果满意.电极在室温环境下储存30 d,其催化活性基本不变.该修饰电极制备工艺简单、重现性良好、稳定性高.     

金属氧化物修饰电极的制备及最新应用

论述了金属氧化物修饰电极的制备方法,对近几年其在环境污染物处理、电分析化学、电合成及与其它方法联用等方面的应用进行了综述。指出了金属氧化物修饰电极研究中存在的问题,并展望了其发展方向与应用前景。