平行板静电场法离子引出的对称收集

离子引出的研究在AVLIS工程中有重要的意义，离子引出量和引出时间直接关系到整个系统 的离子收集效率. 在静电场中，由于等离子体屏蔽效应的存在，等离子体电位要高于正、负 极板的电位，而且在靠近正、负极板的两侧均存在鞘层. 理论模拟表明在正极板一边也可以 引出离子. 选取铯（Cs）作为实验对象，研究静电场对Cs等离子体的离子引出，使用安装在 两个极板上的法拉第筒收集离子引出信号. 实验结果表明，正极板确实可以引出离子，随着 外加电压的升高，从正极板一边引出离子的比率降低. 关键词： AVLIS 离子引出 等离子体     

水喷射淬冷高温壁面的传热实验研究

本文采用直接表面温度测量的方法对水喷射高温壁面的传热过程进行实验研究．系统地研究了射流出口速度、冷却水过冷度、喷嘴至加热面的间距、初始壁温以及水喷雾的流量密度等参数对淬冷表面的膜态沸腾、最小临界点、过渡沸腾、最大临界点等传热过程的影响，给出了有关实验结果，分析了它们的特点。     

亚皮秒太瓦脉冲激光与物质相互作用研究进展

当前亚皮称太瓦超短冲激光技术的发展为激光与物质相互作用领域提供了许劝人心的研究机会，从激光与单个原子的相互作用到激光等离子体中的集体效应，如原子的高度离化、Ｘ射线激光、等离子体波导，等离子体粒子加速器，快速点火方案等等，文章评述了最近几年这方面的研究进展。     

Fluorescence assay of tyrosine in blood plasma

A more simple and sensitive assay for the quantitative determination of tyrosine in blood plasma is developed on the basis of a modification of the method of S. Udenfriend (1962). A volume of 0.2 ml of plasma is used in the analysis; after its deproteinization with trichloroacetic acid, it is reacted with sodium nitride, nitrous acid, and 1-nitroso-2-naphthol at 65°C, and the content of the reaction product is measured by the fluorescence at λ_ex/λ_em=460/570 nm. The consumption of plasma and reagents is reduced by a factor of 5–10 compared to the original method; in addition, the stage of extraction with an organic solvent is excluded. The linear dependence of the fluorescence signal on the tyrosine concentration within the range of 2–60 μg/ml, high specificity, accuracy, and reproducibility of the assay are shown. The importance of tyrosine determination in monitoring of glucocorticoid therapy and protein catabolism is discussed. Institute of Photobiology, National Academy of Sciences of Belarus, 27, Akademicheskaya St., Minsk, 220072, Belarus. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 65, No. 3, pp. 366–371, May–June, 1998.     

Determination of tectoridin in rat plasma by high‐performance liquid chromatography and its application to pharmacokinetic studies

A simple, specific and sensitive HPLC method with UV detection was developed and validated for the determination of tectoridin in rat plasma for the first time. Chromatographic separation was performed on a Welchrom^TM C₁₈ column (150 × 4.6 mm, i.d., 5 µm) at a flow rate of 1.0 mL min^?1, using a mixture of methanol–2% HAc aqueous solution (31:69, v/v) as the mobile phase with UV detection at 266 nm. The calibration curves for tectoridin were linear over the concentration range of 1.10–274.40 µg mL^?1 in rat plasma. The intra‐ and inter‐day accuracies (RE) were within ?3.23% and 4.11%. The intra‐ and inter‐day precisions (RSD) were not more than 2.74 and 4.72%, respectively. The present method was successfully applied to the pharmacokinetic studies of tectoridin in rats after intravenous administration of three different doses. Copyright © 2009 John Wiley & Sons, Ltd.     

由正交表变换得到的2阶平衡的相关免疫函数

本本文给出了一种运用正交表变换来得到2阶相关免疫函数的特征矩阵的新方法,构造出10个不同的(8,4,2,2)特征矩阵,得到了几个相关结论。     

等离子体断路开关的一维磁流体力学数值模拟

 采用磁流体力学的方法对等离子体端路开关进行了一维数值模拟，通过对给定的进入等离子体的电流波形模型的计算，给出了轴向上等离子体的运动及其不同时刻的密度分布，分析了磁场在等离子体内部的异常渗透过程，指出考虑Hall效应是产生这一异常现象的最为主要的因素。     

A broad-band constant beam-width array with four elements

This paper describes in detail an acoustical array structure with fourelements that have cosine directivity function over a certain frequency range.The acoustical axis directions of these elements are orthogonal to each other,sotheir beams cover all bearing angles within 360°.By use of the amplitude bear-ing method,it is easy to detect the bearing of incident acoustic signal.A specialsound reflection foam rubber is designed as a back baffle of the array.It hasbeen shown,in practice,that the constant beam-width has been obtained for amultiple frequency band of the ratio of 8:1.The paper also gives a mathematicalmodel for the array structure.The theoretical values are consistent with themeasured results.     

等离子体隐身技术的WKB方法

研究了非磁化等离子体的碰撞吸收隐身技术机理。用WKB方法给出了垂直入射、斜入射情况下，非磁化不均匀等离子体密度覆盖导体平板的等离子体对不同频率电磁波的反射系数。给出了不均匀非磁化等离子体密度、等离子体碰撞频率、电磁波频率与碰撞吸收的关系。     

Method to reduce the memory effect of mercury in the analysis of fish tissue using inductively coupled plasma mass spectrometry

The routine determination of mercury (Hg) by inductively coupled plasma mass spectrometry (ICP-MS) is affected by a pronounced memory effect in the sample introduction system. This results in long washout times for the analyte, which affects the accuracy and reliability of the analytical procedure. By using a combination of flow injection sample introduction and a sulfur-containing compound in the carrier solution, it was possible to decrease the memory effect of mercury to that for the internal standard (rhodium). The carrier solution contained 2-mercaptoethanol (2-ME) and the developed method was evaluated using three different fish tissue certified reference materials: CRM 464 (BCR, Brussels); DORM-1; and DORM-2 (NRC, Canada). The samples were mineralized using a combination of concentrated nitric acid and hydrogen peroxide and heating in a closed microwave oven. The developed flow injection ICP-MS procedure gave values for total mercury in all three CRM materials in agreement with the certified concentration range. Cold vapour atomic fluorescence spectrometry (CV-AFS) confirmed the results from the developed method. The developed flow injection method had a detection limit (defined as three times the standard deviation of the blank concentration) for mercury of 5.1 μg l⁻¹.