基于CPS模型的高中物理校本课程教学研究——以“中学物理与现代前沿应用”校本课程为例

为了填补国家课程物理课堂教学中核心素养落实的不足,尝试在物理学科类校本课程教学过程中融入核心素养,并重点突出创新实践能力,在基于CPS模型的《中学物理与现代前沿应用》这门校本课程的教学实施过程中,既能与常规物理课堂紧密联系,又始终立足于学生自主发展,为学生创新能力的提升以及个性化发展创设了丰富的机会,取得了比较明显的成效,积累了一定的经验.     

四磺基钴酞菁/MCM-41的制备、表征及其催化性能

将四磺基钴酞菁（CoTSPc）通过共价结合连接在氨基化的介孔分子筛MCM-41孔道壁上，制成负载酞菁催化剂，对其进行了X射线衍射（XRD）和红外分析，并研究了其对巯基乙醇的催化氧化反应动力学．结果表明，负载酞菁催化剂有优良的催化性能，在液相反应过程中扩散阻力较小．这种负载催化剂有酶催化特点，即遵循米氏动力学规律，米氏常数Km为0．015mol／L．反应完成后，通过沉淀即可从反应体系中分离，解决了酞菁催化剂无法回收利用和对环境造成新的污染的问题．在工业生产和环境保护方面有着良好应用前景．     

电光全内反射调制

研究各种无侵袭电光采样技术,尤其是研究电信号在半导体中的传播技术是有意义的。通常是根据施加电场所引起的寻常光线和非常光线的指数变化来讨论电光效应,这种变化与外加电场成正比。调制电场和光场之间电光晶体中的相互作用产生光场的垂直分量。把电光晶体放在交叉偏振器之间,这种效应可以转换为一种强度调制。     

SCHWARZ ALTERNATING METHOD AND MULTIGRID METHOD

In this paper we propose and establish the convergence of several asynchronous parallel algorithms which are defined by combining the Schwarz alternating method with the multigrid method in two ways. In the first we divide the original problem into p related subproblems, then the multigrid method is used to solve these subproblems iteratively. In the second approach we regard the Schwarz iterative method as the smoothing step of multigrid method. All algorithms proposed in this paper can be used on an MIMD computer.     

灵芝酸A对人肝癌细胞的辐射增敏效应的初步研究

本研究旨在初步探讨灵芝酸A(GAA)对人肝癌细胞系HepG2在高LET中子和低LET的γ射线条件下的辐射敏感性的影响及差异。研究中,我们用CCK-8方法检测不同浓度GAA对HepG2增殖抑制作用。选取低浓度(5μmol/L)GAA预处理细胞24 h,分别给予不同剂量的中子辐照或γ射线辐照,分别检测克隆存活率、细胞凋亡和γH2AX蛋白的foci的形成。结果表明:在不加GAA的情况下,高LET中子辐射比低LET的γ射线对细胞产生的凋亡比例高;在添加了GAA后,与未加GAA对照组相比,诱导细胞凋亡的比例明显增加;另外,加GAA处理后,细胞增殖抑制率也随着辐照剂量的增加而增高。即GAA能增加HepG2细胞的辐射敏感性,而在同样GAA剂量下,HepG2细胞对高LET中子辐射比低LET的γ射线更敏感。由此,这项研究说明灵芝酸或可开发成为一种天然辐射增敏剂,从而为癌症特别是肝癌的放疗提供新的辅助治疗方法。     

HgCdTe薄膜的输运特性及其应力调控

窄禁带直接带隙半导体材料碲镉汞(Hg1–xCdxTe)是一种在红外探测与自旋轨道耦合效应基础研究方面都具有重要应用意义的材料.本文对单晶生长的体材料Hg0.851Cd0.149Te进行阳极氧化以形成表面反型层,将样品粘贴在压电陶瓷上减薄后进行磁输运测试,在压电陶瓷未加电压时观察到了明显的SdH振荡效应.对填充因子与磁场倒数进行线性拟合,获得样品反型层二维电子气的载流子浓度为ns=1.25×10^16m^-2.在不同磁场下,利用压电陶瓷对样品进行应力调控,观测到具有不同特征的现象,分析应是样品中存在二维电子气与体材料两个导电通道.零磁场下体材料主导的电阻的变化应来源于应力导致的带隙的改变;而高场下产生类振荡现象的原因应为应力导致的二维电子气能级的分裂.     

德鲁德分布非均匀膜的光学特性模拟分析

从德鲁德理论出发,对多元共蒸法镀制的非均匀膜的折射率分布与沉积速率的关系进行了探讨;然后利用计算机辅助模拟,对德鲁德分布非均匀光学薄膜,从单周期和多周期、正变和负变、完整周期和存在半周期几个方面对其光学特性进行了系统分析.研究发现：其透射率的极小值和周期数的关系遵从周期数的三次多项式衰减规律,不同规律的德鲁德分布非均匀膜可用来设计不同功能的滤光片.     

Newly designed multilayer thin film mirror for dispersion compensation in Ti:sapphire femtosecond lasers

There are two different effects to generate group delay dispersion by multilayer thin film mirrors: chirper effect and Gires-Tournois effect. Both effects are employed to introduce desired dispersion in the designed mirror. Thus the designed mirror provides large dispersion throughout broad waveband. Such mirror can be used for dispersion compensation in Ti:sapphire femtosecond lasers. Most group delay dispersion of a 5-mm Ti:sapphire crystal can be compensated perfectly with only four bounces of the designed mirror.     

Effects of oxygen partial pressure on optical absorption edge and UV emission energy of ZnO films

ZnO, with a band-gap of 3.37 eV and a large exciton binding energy (about 60 meV) at room temperature, is a promising material for optoelectronic devices, field- emission displays, and gas sensors. Recently, the interest in short wavelength display device is on the increase. In this regard, ZnO is a promising material[1-6]. High quality ZnO films have been prepared by many methods such as sputtering[7], reactive thermal and electron-beam evaporation[8], pulse laser deposition[9], chemical v…     

Antireflective characteristics of triangular shaped gratings

It is well known that conventional multi-layers are oftenused for antireflective coatings[1,2]. There are, however,only a handful of optical materials available, thus limit-ing the performance that could ideally be achieved. Onthe other hand, sub-wavelength structure surfaces, whichare surface-relief gratings with periods smaller than theincident wavelength, have been researched and foundto have antireflective properties[3,8]. Compared withstandard optical thin-film coating technologies, the h…