Mn（Ⅱ）,Co（Ⅱ）与HSA相互作用的荧光光谱研究

用荧光光谱法研究了生理ｐＨ和等离子点（ｐＨ＝５．３０）时Ｍｎ（Ⅱ）、Ｃｏ（Ⅱ）与ＨＳＡ的相互作用。根据Ｆｏｒｓｔｅ非辐射能量转移理论,得到了不同ｐＨ时Ｍｎ（Ⅱ）、Ｃｏ（Ⅱ）在ＨＳＡ中的第一强结合位置与Ｔｒｐ－２１４残基间的距离。这一结果远大于文献报道值,根据Ｍｎ（Ⅱ）、Ｃｏ（Ⅱ）在ＨＳＡ中的结合部位及ＨＳＡ的畴结构对这一显著差异进行了讨论。     

类立方烷过渡金属簇合物(n-Bu4N)3[MoAg3BrI3S4]激发态寿命测量

本文在类立方烷过渡金属簇合物(n-Bu₄N)₃[MoAg₃BrI₃S₄]空气饱和乙氰溶液中实现了瞬态全光开关.由开关时间推断出这种材料的激发态寿命约600ns,约为C₆₀三重态第一激发态在空气饱和甲苯溶液中寿命的2倍.     

长焦距光学系统杂光系数测试仪

报告了一种新的长焦距光学系统杂光系数测量装置,该装置除具有避免了制作大直径积分球的优点外,还能精确测量轴外杂光系数,分析各部分杂光源对杂光系数的影响.     

Controlling theoretically total absorption in hybrid-cavity resonator with one graphene monolayer outside cavity

Total absorption is realized theoretically in a graphene-outside-cavity resonator. The structure is composed of the FP-Fano hybrid resonance cavity. Changing the thickness of grating exciting Fano resonance, the absorption-mode number can be tuned effectively. For the focused double-mode absorption, the resonances behave insensitively with the variation of chemical potential of graphene. Varying the geometry of grating can control the coupling extent of two modes. Also, by manipulating the period number of two-side multilayers around graphene, the absorption, shift and number of modes are governed.     

Controlled Remote State Preparation of an Arbitrary Two-Qubit State by Using Two Sets of Four-Qubit GHZ States

Recently, Huang and Zhao (Int. J. Theor. Phys. 56, 678, 2017) proposed a new scheme for controlled remote state preparation of an arbitrary two-qubit state by using two sets of three-qubit GHZ states as the quantum channel. In the scheme, Alice and Bob choose four different kinds of two-qubit projective measurement bases to measure their local qubits, respectively. We demonstrate that two sets of four-qubit GHZ states can be used to realize the deterministic controlled remote state preparation of an arbitrary two-qubit state by performing only two-qubit projective measurements.     

基于动态雷达比的气溶胶消光系数及光学厚度反演

激光雷达以其高垂直空间分辨率和高时间分辨率的优势在大气气溶胶监测中具有重要作用。在利用Fernald法反演气溶胶消光系数和光学厚度的过程中,雷达比是反演结果的主要误差源。在目前的应用中雷达比普遍都是取固定值,这就必然给雷达反演带来误差。通过对污染物以及气象数据与雷达比的逐步回归分析,建立了雷达比估算模型,从而实现雷达比的动态估算。研究表明:雷达比的变化与空气中PM2.5质量浓度、相对湿度、SO2和NO2质量浓度等具有明显相关性。相比于固定值,利用动态雷达比反演的气溶胶消光系数和光学厚度精度明显提高。     

Electrodes surface-intercalated with powder catalysts: II. Microelectrodes surface-intercalated with powder catalysts

Microelectrode techniques were worked out for the study of electrocatalytic behaviors of powder catalysts. Ultra thin layer of fine catalyst powder was intercalated into the surface layer of soft conductive plastic sheet made from acetylene black and polytetrafluoroethylene (PTFE) binder. Microelectrodes of such construction have been successfully employed in the study of reversible and irreversible electrode reactions. Experimental results clearly indicated that microelectrode with ultra thin layer of surface-intercalated catalyst powder could serve as a powerful tool for the study of electrocatalytic behaviors of powder catalysts.     

Theoretical study on the reaction mechanism and thermodynamics of tin oxidation by oxygen species and chlorine species

In this work ab initio molecular orbital methods were employed to study the coal combustion reaction mechanisms of tin oxidized by different oxidants, including HOCl, HCl, ClO, ClO₂, NO₃, CO₂, and O₂. Eleven reaction pathways were identified. The results show that Sn can react with HCl, ClOO, CO₂, O₂, and NO₃ to form SnO and SnCl. SnO can be oxidized into SnCl by HOCl and HCl. SnCl can be further oxidized into a soluble compound, SnCl₂. © 2005 Wiley Periodicals, Inc. Int J Quantum Chem, 2005     

有机化学基础实验课程一流建设

Green chemistry oriented instrument platform on preparation, purification and characterization for basic organic chemistry experiment course is constructed, and basic, comprehensive and innovative experimental projects were implemented to build a green, hierarchical and informationized curriculum system. Using information technology, new media and the Internet as the means and adopting various teaching modes, online and offline teaching of basic experiment of organic chemistry are carried out to benefit teacher-student interaction, flipped classroom, teaching and learning. The curriculum content reform is led by teaching and scientific research achievements, emphasizing the integration of theory and practice, the integration of tradition and frontier, increasing the interest and frontier of the curriculum, so as to realize the high-level, innovative and challenging nature of the curriculum.     

LC-ESI-MS Determination of Roxithromycin in Tissues of Beagle Dogs after Multiple Dosing of Roxithromycin Sustained Release Tablets

Roxithromycin, often regarded as an ‘advanced-generation’ macrolide, is widely used throughout the world. To exactly evaluate the efficacy of roxithromycin sustained release tablets on tissue pharmacokinetic and pharmacodynamic parameters, we developed a reliable LC-ESI-MS method for the determination of roxithromycin in beagle dog tissues. The overall chromatographic run time was 3.2 min. This method involved the homogenization of tissues followed by an economical liquid-liquid extraction in 2.0 mL Eppendorf tubes. Selected ion monitoring (SIM) in positive mode was used for the quantification of roxithromycin at m/z 837.45 and clarithromycin (internal standard) at m/z 748.45. The method was validated to be accurate, precise and rugged with good linearity in all tissue homogenates. The method has been successfully applied to determine roxithromycin in many dog tissues and has been used for tissue distribution of roxithromycin studies. The present study demonstrates that the highest tissue concentration of roxithromycin was observed in the liver, followed by lung, spleen, kidney and heart after multiple dosing of sustained release tablets.