The Progress of a Microbeam Facility in the Institute of Plasma Physics

The progress of a microbeam facility in the institute of Plasma Physics was discussed in this paper.This kind of equipment can supply single-particle beam which may be implanted into cells in micrometer-radius and measured by a new outstanding detector among global microbeam systems.Measurements by some plain targets showed that the highest current after the accelerator tube can be larger than 20μA ,the H2^ current before the second bending magnet is near 0.9μA ,the current after the second bending magnet is near 0.8μA,and the current of the beam line(after a 2-mm diameter aperture)is near 0.25nA which is enough for the single-particle microbeam experiment.It took scientists 3 months to do their microbeam experiment after setting up the qccelerator beam line and get the microbeam from this equipment.Two pre0collimators were installed between the 2-mm diameter aperture and the collimator to survey the beam.Tracks on the CR39 film ectched in the solution of NaOH showed that the beam can go through the collimator including a 10μm diameter aperture and the 3.5μm thick vacuum sealing film(Mylar).A new method,which is called optimization of the beam quality,was put forward in this paper,in order to get smaller diameter of beam-spot in microbeam system.     

The Experiment of Obtaining Micron Beam in the Single-Particle Microbeam Facility of the Institute of Plasma Physics

The Experiments, methods and results of obtaining micron beam in the Microbeam Facility of the Institute of Plasma Physics were discussed in this paper. The H2^ beam was accelerated by the Van de Graa/f electrostatic accelerator, and the collimator at the end of the beam line is a 60μm thick stainless steel chip. And as a result, particle tracks on the solid track probes (CR39 film) etched in the solution of NaOH showed that the beam can go through the collimator with a small aperure (2000, 300, 55, 30, or 10μm) and 3.5μm thick vacuum film(Mylar). Besides the CR39 method, the beam was measured by an energy spectrum detector after the 10μm diameter aperture and the 3.5 μm thick vacuum film too.     

碳纤维布加固技术在某工程中的应用与分析

对碳纤维布在加固领域中的实际应用进行了介绍，结合工程实例，对在施工过程中如何优化施工工艺使其达到最佳设计加固效果进行了分析和探讨。     

湿法磷酸脱硫（SO4^2—）净化研究

针对云南湿法磷酸进行了脱除硫酸根的实验研究，考察了沉淀剂用量，反应时间及温度等因素对硫酸根去除率的影响     

以单凸峰球状模型对渗硫钢表面摩擦特性的研究

由钢材表面上的镀覆膜和化学热处理的异同，建立起球状单凸峰擦过渗硫层表面摩擦特性的分析模型及数值计算方法，黛助计算机对流硫层的摩擦特性及影响参数进行了分析。     

宽带网MAC层协议UniLINK的分析

介绍了适合当今有线电视网（ＨＦＣ）体系结构的介质访问协议ＵｎｉＬＩＮＫ，并通过具体测试，分析了ＵｎｉＬＩＮＫ协议提供的三种动态使用时间槽策略使得该协议在长距离高速传输数据方面具有其合理性和有效性。该协议的设计适用于树型拓扑结构的宽带网络，其支持的距离从主控端到客户端可达１６０ｋｍ。     

YX2型高效节能电动机的应用及效果

详细说明了YX2型高效节能电动机的性能及结构特点等,并通过现场运行测试显示出了较好的节能效果.     

基于.NET的手机订票系统的设计

详细介绍了WAP手机预订火车票系统的设计方案.该系统应用程序分三层设计数据层完成对数据库的各项操作;业务层处理订票的业务规则;表示层中移动Web程序用Mobile Internet Toolkit设计,并注意了移动设备的屏幕尺寸小、输入不方便的特点.三层设计增强了系统的可扩展性和伸缩性.应用服务器通过WAP网关直接与移动通信网连接,充分利用了WAP网关的功能.     

参量激励的非线性电路

非线性电路作为一种孤立波的实验系统,具有设计灵活,容易测量等特点,弥补了一些机械系统的不足.本文在前人工作基础上,利用乘法器,设计了一种带参量激励的非线性电路,克服了电路耗散.数值计算中观察到不衰减的电路孤立波.     

学科教师运用信息技术现状的调查

我校是由金坛市实验小学和华罗庚实验中学于2003年9月合并而成的,设施先进,每个教室都建立了多媒体双向电化系统,还有演播厅、微机室(6个)、语音室(4个)、监控室、校园网和电视台等,学校在信息技术建设上投资近1500万.硬件有了,如何发挥其功能是摆在我们面前的头等大事,为此,在江苏省电教馆的支持下,我们于2003年开展了<运用信息技术提高学科教学效益>的课题研究.首先,我们对我校教师在学科教学中应用信息技术的现状进行了调查,以便全面了解我校教师在学科教学中信息技术应用的实际情况,为课题的顺利开展奠定良好的基础.