After-Effects of Electrolytically diffused hydrogen in the second-order elastic coefficient of poynting’s effect in nickel and steel

Summary If hydrogen is diffused electrolytically in a metal, it subsequently escapes out if the metal is left to itself. However this hydrogen-treated metal does not totally regain the original magnitudes of its various physical properties,e. g., thermo e.m.f., electrical resistivity, elastic modulii etc. This effect has also been observed in the second-order elastic effect (the Poynting effect) in nickel and two varieties of steel. Measurements were carried out first before hydrogen diffusion. The samples were electrolytically diffused with hydrogen and the left to themselves for a few days and the measurements were repeated. The changed values of the coefficient of Poynting effect are discussed in terms of the dislocations created by in-and out-going hydrogen. Now retired     

Photoinduced Change in the Optical Constants of Thin Films

We propose and have realized experimentally a method for determining weak reversible photoinduced changes in the optical constants of high-refraction films based on the application of the envelope method to the photomodulation transmission spectrum of the film. __________ Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 72, No. 3, pp. 366–370, May–June, 2005.     

ZnO薄膜光学常数测量

利用Kramers-Kronig方法(K-K方法)测量了ZnO薄膜的复介电常数和复折射率(折射率和消光系数)。为了满足K-K方法所要求的条件,光源发出的光束通过一个特殊设计的中间带孔的反射镜垂直投射到ZnO薄膜表面,在ZnO薄膜表面产生的反射光穿过反射镜中间的小孔进入单色仪,从而测量出正入射情况下ZnO薄膜的反射光谱。对有限波段下测量的数据经合理的外推后,得出全波段的薄膜反射谱,然后利用K-K方法计算出ZnO薄膜的复介电常数和复折射率。实验结果表明,氧化锌薄膜在可见光范围内的折射率近似为一常数3．5;在430nm附近出现折射率最大值,而在短波长范围所对应的折射率大大降低,其值在0．5—2．5之间起伏波动。     

The anomalous magnetic moment of the electron

The value of the electron's magnetic moment is a fundamental quantity in physics. Its deviation from the value expected from Dirac theory has given enormous impetus to the field of quantum theory and especially to quantum electrodynamics (QED) as the relativistic quantum field theory of electrodynamics. In fact, the measured values both for free and for bound electrons are explained by corresponding QED calculations on the part per trillion and part per billion level of accuracy, respectively. This agreement is amongst the best known in physics today. In turn, it allows highly precise determinations of related fundamental constants like the fine structure constant α or the electron mass. The present article discusses the application of the continuous Stern–Gerlach effect to the precise measurement of magnetic moments, especially of the electron bound in highly charged ions and possible tests of calculations in the framework of QED of bound states. Also, a test of QED in a more general approach by the comparison of values for the fine structure constant derived from different measurements, will be discussed.     

原子力与光子扫描隧道组合显微镜

介绍了超高分辨光于扫描隧遭显微镜（PSTM）的计冗历程,为解决第一代（单光束照明）光千扫捕隧逼显傲镜中存在人为假象和样品光学图像与形貌图像难于分离两个难题,用“对称双光束照明方法消假象,用原子力与光子扫描隧道组合显微镜（AF／PSTM）图像分解方法分离样品光学透过率、折射率与形貌图像。研制成功新一代原子力与光子扫描隧道组合显微镜（AF／PSTM）样机。该样机在一次扫描中已获得两幅原子力显微镜图像（形貌与相位）和两幅光学图像（透过率和折射率）,有效地减少了假象,分解了样品光学折射率、透过率与形貌图像。     

基于DIC的受载砂土颗粒体系的细观参数及运动分析

本文结合DIC方法对砂土体系进行可视化的直剪试验。通过对所采集的数字图片进行预处理,得到利于计算砂土体系细观参数的优质图片,经过图像分割和区域标记,最后利用MATLAB计算得到体系孔隙率、定向率和各向异性率等细观参数。对图像进行DIC计算分析,得到砂土颗粒体系的位移等值线云图,分析了体系内的砂土颗粒在直剪试验中的运动情况,并定性描述了位移突变对体系部分力链传递过程的影响。     

Dynamics of surface reactions: from “hot” precursors to conventional thermal activation

Heterogeneous catalytic reactions usually contain steps, e.g., adsorption, generating energy-rich (“hot”) precursors for other steps. With increasing the rate of energy relaxation one can observe a transition from the reaction regime dominated by “hot” precursors to conventional thermal activation. To illustrate this transition in detail and to show what may happen in various situations, I present an analytical model based on the Fokker-Planck equation for energy relaxation.     

一种多策略引导的电磁场优化算法求解作业车间调度问题

电磁场优化算法是目前一种比较新颖的群智能优化算法,其利用不同极性电磁场所产生的引斥力,使电磁粒子朝最优解移动。针对标准电磁场优化算法在求解作业车间调度问题时容易陷入局部极值点、收敛精度差等问题,提出了一种多策略引导的电磁场优化算法。算法中粒子受到三种不同来源的引斥力,在迭代过程中通过计算每种移动策略的临代电差、累计电差和综合电差来决定粒子的引导方式,并通过概率变异算法来避免陷入局部最优解。通过作业车间调度问题FT、LA系列测试实例仿真实验,对新算法与其他算法的测试结果进行比较分析,研究表明该算法具有更高的求解精度和更快的计算速度。     

Phenolic Compounds of Plants of the Scutellaria L. Genus. Distribution, Structure, and Properties

Information on flavones, flavanones, flavanonols, flavonols, chalcones, isoflavones, biflavonoids, lignoflavonoids, and lignane glycosides and stilbenes isolated from plants of the Scutellaria L. genus was systematized and reviewed. A list of 208 phenolic compounds was given according to flavonoid type with an indication of the plant sources, structures, and physicochemical properties and citations of the original articles.