高频高效照明驱动电路的开发与设计

采用逆变式高频电源对水银灯类高亮度照明电源的驱动电路进行了开发设计，解决了照明灯光闪动问题，并可使输入功率因数达到９９％以上，同时通过实验也验证了该方法的可行性。     

Unidirectional rotary motion in a molecular system.

The conversion of energy into controlled motion plays an important role in both man-made devices and biological systems. The principles of operation of conventional motors are well established, but the molecular processes used by 'biological motors' such as muscle fibres, flagella and cilia to convert chemical energy into co-ordinated movement remain poorly understood. Although 'brownian ratchets' are known to permit thermally activated motion in one direction only, the concept of channelling random thermal energy into controlled motion has not yet been extended to the molecular level. Here we describe a molecule that uses chemical energy to activate and bias a thermally induced isomerization reaction, and thereby achieve unidirectional intramolecular rotary motion. The motion consists of a 120 degrees rotation around a single bond connecting a three-bladed subunit to the bulky remainder of the molecule, and unidirectional motion is achieved by reversibly introducing a tether between the two units to energetically favour one of the two possible rotation directions. Although our system does not achieve continuous and fast rotation, the design principles that we have used may prove relevant for a better understanding of biological and synthetic molecular motors producing unidirectional rotary motion.     

铅烷发生的酸性模式与碱性模式的对比研究

用FI－HG－AAS系统对K2Cr2O7体系铅烷发生的碱性模式与酸性模式进行了对比研究，观察反应中反应物摩尔量与铅烷产率关系后发现酸性模式与碱性模式有相同的规律，采用高浓度K2Cr2O7氧化，其还原产物Cr(Ⅲ）会生成CrBn沉淀，严重吸附铅离子，导致铅信号下降。     

纵卷叶螟绒茧峰的畸形细胞

以水稻重要害虫稻纵卷叶螟和其主要寄生天敌从纵卷叶螟绒茧蜂为研究对象，对它们之间相互作用的内部机制进行了初步研究，结果表明纵卷叶螟绒茧峰在寄主体内寄生时，其胚膜的局部区域 解成单个细胞释放到寄主的血淋巴中，形成畸形细胞，起初畸形细胞的数量在１２０个左右，随着寄生蜂幼虫的不断发育，畸莆细胞的体积逐渐增大，当寄生蜂幼虫老熟啮出时，畸表细胞的直径已从最初的３０μｍ增大到２５０μｍ体积增大了５００多倍，但数     

Technology and the Myth of ‘Natural Man’

The main suggestions and objections raised by Don Ihde and Charles Lenay to my ‘Technology and the body: the (im)possibilities of re-embodiment’ are summarized and discussed. On the one hand, I agree that we should pay more attention to whole body experience and to further resisting Cartesian assumptions in the field of cognitive neuroscience and philosophy of cognition. On the other hand, I explain that my account in no way presupposes the myth of ‘natural man’ or of a natural, delineated body from before the fall into technology.     

考务工作计算机管理系统的研究

考务管理工作是高等学校的一项重要而复杂的工作，本文以现代化科学管理方法为指导思想，研制了考务工作的计算机管理系统，从总体设计到各模块功能、特点等进行了详细论述和理论探讨，提出了一套科学实用的管理方法，并研制了一套软件，为实现高校考分管理工作的系统化、科学化奠定了基础．     

Demonstration of retinoic acid isomers in human urine under physiological conditions

Untransformed retinoic acid has never been demonstrated in human excreta under normal physiological conditions. We have developed a two-step liquid chromatographic system for the demonstration of subnanogram amounts of this compound in human urine without administration of any precursor.     

Observations on the toxicity and metabolic relationships of polygodial,the chemical defense of the nudibranchDendrodoris limbata

Summary Polygodial (1), the defense metabolite stored in the skin of the nudibranchDendrodoris limbata, is toxic for the mollusc itself when injected into the hepatopancreas. Biosynthetic experiments using labeled mevalonic acid were devised to investigate a possible metabolic relationship between1 and the mixture of sesquiterpenoidic esters2, stored in the hepatopancreas. The results suggest that1 and2 are biosynthesized by independent pathways.Thanks are due to G. Villani for supplyingDendrodoris limbata and to A. Trabucco for technical assistance.     

Membrane resting potentials in cultured mouse neuroblastoma cells

Summary Membrane resting potentials (MRP) were measured systematically in cultured mouse N₂A neuroblastoma cells: 1) in the logarithmic growth phase; 2) in subconfluent cultures; 3) in confluent cultures; 4) after dBcAMP had induced morphological differentiation. Neurite extension was accompanied by a significant increase in MRP as compared to the appropriate controls. No significant differences in MRP were observed with regard to the different growth phases.     

组网雷达自适应模糊CFAR检测融合算法

为提高组网雷达的分布式恒虚警(constant false alarm rate, CFAR)检测性能, 基于模糊逻辑和最大选择筛选平均检测器(maximum-censored mean level detector, MX-CMLD)提出一种自适应多传感器分布式模糊CFAR检测算法。该方法是一种基于无信噪比信息的检测融合算法, 通过传输单部雷达站接收信号的检验统计量、检测可信度来完成全局的CFAR检测。该方法通过表决模块和反馈模块, 控制传输到融合中心的数据量, 并自适应选取相关的雷达数据进行融合, 在一定程度上可以实现雷达资源的管理。仿真结果表明, 在均匀背景、多目标干扰背景的目标检测中, 自适应分布式模糊MX-CMLD均有较好的检测性能。