NFZ-10工业辐照电子直线加速器

研制的电子直线加速器ＮＦＺ－１０的辐照加工能力相当于３０ＰＢｑ的６０Ｃｏ源，电子束能量为４～１２ＭｅＶ，平均束功率为３ｋＷ，扫描宽度为１ｍ，能量不稳定度≤±０．５％，束流不稳定度≤±０．６％，扫描不均匀度≤±２．５％。ＮＦＺ－１０加速器已被用于辐照各种电力半导体器件，一年多来运行稳定可靠并获得较好的经济效益。     

Finite-element calculation of the influence of interdiffusion on eigenstates in a GaAs/Al x Ga1-x As single-quantum-well structure

The influence of interdiffusion on eigenstates in an interdiffusion-induced GaAs/Al_xGa_1-xAs single-quantum-well structure is analysed numerically by the finite element method. In this approach, the confinement potential profile of the interdiffused quantum well structure is nonlinear and is modelled by an error function and, in particular, the nature of the effective mass of an electron is considered. The results show that the number of eigenstates and energy levels varies with the extent of the interdiffusion. Numerical results for the quasi-bound states in the quantum well structure with an applied electric field are also presented.     

抗有机杂质镀镍添加剂对阴极极化性能的影响

研究了有机杂质以及抗有机杂质添加剂对镀镍过程中阴极极化性能的影响．实验结果表明，有机杂质增大了阴极极化，而抗有机杂质添加剂却能减小阴极极化．实验结果还显示，添加剂消除有机杂质污染的效果同其降低阴极极化的能力密切相关     

Molecular deposition film of porphyrin and phthalocyanine bearing oppositely charged substituents

Ｔｈｅｆｏｒｍａｔｉｏｎｏｆａｎｅｗｔｙｐｅｏｆｓｅｌｆ＿ａｓｓｅｍｂｌｅｄｍｕｌｔｉｌａｙｅｒｆｉｌｍｓ,ｍｏｌｅｃｕｌａｒｄｅｐｏｓｉｔｉｏｎ(ＭＤ)ｆｉｌｍｓ[1,2],ｉｓａｆａｓｔｄｅｖｅｌｏｐｉｎｇａｒｅａｏｆｔｈｉｎｆｉｌｍｒｅｓｅａｒｃｈ.Ｔｈｉｓｎｅｗｍｅｔｈｏｄｏｆｆｉｌｍｐｒｅｐａｒａｔｉｏｎｉｓｂａｓｅｄｏｎｉｏｎｉｃａｔｔｒａｃｔｉｏｎｂｅｔｗｅｅｎｏｐｐｏｓｉｔｅｃｈａｒｇｅｄｃｈｒｏｍｏｐｈｏｒｅｓ.ＩｎｃｏｍｐａｒｉｓｏｎｗｉｔｈｔｈｅｃｌａｓｓｉｃＬａｎｇｍｕｉｒ＿Ｂｌｏ…     

Mixed C18 and C1 modification on an optical fiber for chromatographic sensing

An optical fiber-chromatographic sensor, aiming at simultaneous and selective response to multiple components following a chromatographic separation, is described. We report an improved approach for immobilization of octadecyl (C(18)) and methyl (C(1)) moieties as stationary phase on an optical fiber suitable as a sensing phase for organic solutes. By this approach, the stability and lifetime of the sensing layer as well as the detectability and retention behavior of the chromatographic sensor could be improved. Infrared spectroscopy was employed to confirm the presence of C(18) and C(1) moieties on the modified surface of the optical fiber. The chromatographic sensor was applied, with good sensitivity and chemical selectivity, to the simultaneous separation and detection of bromobenzene and toluene, using water as the mobile phase.     

Sonochemical Degradation of Polychlorinated Biphenyls in Aqueous Solution

Ultrasonic waves in a liquid induce the formation of cavitation bubbles. Submitted to an oscillating pressure field, cavities filled with vapor and dissolved gas pulsate, grow and implode violently when they reach a critical resonant size. According to the 慼ot spot?theory, extremely high temperature and pressure are produced during the collapse of cavitation bubbles1. Under these extreme conditions, the molecules vaporized in the bubbles as well as in the surrounding condensed layer could …     

统计模拟分光光度法测定复方消咳新片组分含量

用统计模拟分光光度法测定复方消咳新片４个组分含量。按均匀设计表制备合成样品，绘制溶液的ＵＶ－ＶＩＳ吸收曲线，获得有限但足够的实验数据，用逐步回归法构造反映该复方制剂组分在灵敏波长的吸光度－组分含量经验关系的“最优”数学模型，用改进单纯形法寻优，求出未知样品的各组分含量。磺胺甲基异恶唑、甲氧苄胺嘧啶、盐酸溴已新、枸橼酸维静宁的回收率分别为１００３％、１００４％、９９９％、９９０％，标准差分别为０９１％、１４％、１２％、３９％。