A Study of Electromagnetic Transition of △（1232） Resonance

Point form relativistic dynamics of relativistic quantum mechanics is employed to estimate the photon and electroproduction amplitudes of A(1232) resonance. Results are compared with the non-relativistic work, and the differences between the two frame works are discussed.     

β-环糊精用于铜的二次微分简易示波伏安法测定

示波分析;硅黄铜;β-环糊精用于铜的二次微分简易示波伏安法测定     

ACRT-Bridgman法制备组份均匀的碲锌镉单晶体

采用加速坩埚旋转技术-Bridgman(ACRT-B)法制备了φ40 mm的结构较为完整的Cd0.96Zn0.04Te晶锭.利用红外分光光度计测定晶片的近红外透射曲线,最大斜率切线法测定截止波长(cut-off wavelength,threshold wavelength),进而计算截止能量和该点的Zn组份.绘制了晶片表面的组织图,以及晶锭轴向剖面的Zn组份等高线图.实验结果表明:ACRT方法显著改善晶体组份的轴向偏析和径向偏析,晶锭中部存在两个Zn组份轴向和径向皆均匀的区域,分别约占晶锭体积的37;和16;,对应于两个大的单晶晶粒,大部分区域Zn组分径向偏析几乎完全消失.     

水热法合成纯立方铁锰矿型In2O3晶体

本文采用水热法合成了纯立方铁锰矿相In2O3晶体.以3M KOH为矿化剂,填充度35;,压力40 MPa,温度430 ℃,反应24 h,加入适量的In2O3立方铁锰矿相和金刚砂相混晶原料,经过水热反应,In2O3原料经过二次结晶全部转化成纯立方铁锰矿相,其中的金刚砂相消失,并长成几十微米多面体晶体.改用In(OH)3作前驱物,在同样的水热条件下,生成纯立方铁锰矿相,晶体成立方形,显露{002}、{020}、{200}晶面.     

Symmetry Reductions, Exact Solutions and Conservation Laws of Asymmetric Nizhnik-Novikov-Veselov Equation

By applying a direct symmetry method, we get the symmetry of the asymmetric Nizhnik-Novikov-Veselov equation （ANNV）. Taking the special case, we have a finite-dimensional symmetry. By using the equivalent vector of the symmetry, we construct an eight-dimensional symmetry algebra and get the optimal system of group-invariant solutions. To every case of the optimal system, we reduce the ANNV equation and obtain some solutions to the reduced equations. Furthermore, we find some new explicit solutions of the ANNV equation. At last, we give the conservation laws of the ANNV equation.     

New Matrix Loop Algebra and Its Application

A new matrix Lie algebra and its corresponding Loop algebra are constructed firstly, as its application, the multi-component TC equation hierarchy is obtained, then by use of trace identity the Hamiltonian structure of the above system is presented. Finally, the integrable couplings of the obtained system is worked out by the expanding matrix Loop algebra.     

Generation of Multi-ion Graph States with Trapped Ions in Thermal Motion

We propose a scheme for generating multi-ion graph states using many trapped ions in thermal motion. Our generation scheme is insensitive to external state since the interaction between ions and laser fields does not involve the external degree of freedom. The scheme can be well realized within the current experimental technique.     

机械力粉磨对再生微粉性能的影响

为提高再生微粉的利用率,对再生微粉进行机械力粉磨处理.研究了超微气流粉碎和振动球磨对再生微粉性能的影响.采用激光粒度分析仪、XRD、SEM和压力试验机对再生微粉的粒径分布、物相构型、微观形貌和砂浆的抗压强度进行表征,并按国标对再生微粉活性指数进行检测.结果表明:气流粉碎机粉磨的再生微粉的粒径分布范围窄、粒形规整、填充效果好、活性高;利用气流粉碎机对再生微粉进行处理,提高了再生微粉的利用率和利用范围.     

ITO薄膜可见光区增透性能研究

采用MPS单极性脉冲磁控溅射法,在PMMA衬底上制备SiO2增透薄膜,通过改变溅射时间达到最优的增透效果.在此基础上,制备了不同溅射时间的ITO薄膜,系统研究了增透前后的可见光透过率、方块电阻和红外发射率的变化.实验结果表明,增透后薄膜可见光平均透光率提高大约6;,对于溅射时间小于60 min的ITO薄膜增透之后的平均透光率达到80;以上,同时薄膜的方块电阻以及红外发射率变化较小.