DWDM上25.344 Mbit/s光监控信息传送系统的设计

采用25.344 Mbit/s光监控信息传送技术可以更好地满足当前密集波分复用(DWDM)系统中不断增加的网络监控信息和附加业务的需要.文章首先介绍了25.344 Mbit/s光监控信息传送系统的技术方案,然后详细描述了其帧结构、码型设计以及硬件实现的框图,最后介绍了该技术的优点.     

铝电解阴极用TiB2涂层的研究现状

简要介绍了我国铝电解工业的发展现状,指出了我国预焙铝电解槽寿命短的弊端;并分析了电解槽早期破损的原因和采用TiB2阴极涂层技术提高电解槽寿命的机理;叙述了新一代常温固化TiB2阴极涂层的特点,并强调应用新一代常温固化TiB2阴极涂层技术,提高电解槽寿命,是符合我国国情且行之有效的措施。     

冷镦钢新型脱氧剂的试验研究

采用新型复合脱氧剂和脱氧工艺对冷镦钢进行工业性试验研究，研究结果表明：冷镦钢采用AlMg合金脱氧获得了良好的脱氧效果，可以避免形成大型夹杂物，提高钢水纯净度。     

制氧机闲置的氪、氙回收设备的恢复利用

将三套全提取空气分离设备的氪氙系统进行组合,实现互联、互替,从而解决了其中一套氪氙系统设备因缺陷而不能生产的问题。     

γ-ray self-absorption of cylindrical fissile material

The self-absorption of γ-ray emitted from cylindrical fissile materials, such as ^235U and ^239Pu. does not possess spherical symmetry. The analytical formulae of self-absorption for y-ray throughout the cylinder have been obtained. The intensity of γ-ray is a function of y-ray outgoing directions and cylindrical configorations, accordingly one can acquire the information about geometrical configuration of cylindrical fissile materials through multi-location measurements. Further more. the method is given in this article, The result can be applied to the fissile material safeguard, such as nuclear monitoring and verifying.     

聚醋酸乙烯酯共聚胶液的改性研究

聚醋酸乙烯酯作为常用的胶粘剂之一,有明显的优点,但随着环保和绿色生活的要求,其有毒和耐水性等缺陷影响了其更好发展.本研究利用醋酸乙烯酯与其它烯类单体的共聚,制备出了无毒、快干、胶接强度高、耐水性好的高性能聚醋酸乙烯酯共聚改性胶液,并对其相关影响因素及工艺条件的确定进行了讨论.     

Pressure infiltration of Al and Al-12 wt% Si alloy into compacts of SiC and oxidized SiC particles

Oxidizing SiC particles is a common practice in the fabrication of SiC/Al composites through direct mixing of the liquid metal and the ceramic particles. This practice is addressed to reduce the reaction between the two materials. In a previous work it was concluded that oxidizing SiC particles scarcely affected the threshold pressure for infiltration of pure Al into compacts made of those particles. In this work we present a detailed study of this problem for infiltration of pure Al and the eutectic Al-Si alloy. Our results indicate that oxidizing of SiC particles does not affect significantly either the threshold pressure or the infiltration kinetics. This conclusion is equally valid for both pure Al and the eutectic alloy.     

Application of N-succinimidyl 4-[(18)~F](fluoromethyl) benzoate to protein labeling

N-succinimidyl 4-[18F](fluoromethyl) benzoate for protein labeling was prepared (57%, EOB) in about 30min. Reaction conditions of S18FMB with IgG including pH of solutions, protein concentration, reaction temperature and time were studied. The optimal labeling conditions were: 0.2mg/mL IgG, pH = 7.8-8.5, 25℃, and reaction time 5min.Under these conditions the yield was about 80%. The 18F-labeled protein was purified by size exclusion chromatography.     

一个地下水流及溶质迁移模拟的图形化方案

本文介绍在地下水饱和系统中，对地下水流和溶质迁移模拟进行计算机图形化处理的方案。     

高流速双室床节水效果评价

高流速双室床(HDCB)是我国自主开发的一项水处理新技术。陕西某热电厂1年多的运行结果表明,其自用水率仅为3.2%,远低于反渗透(33%)及其他离子交换技术(10%)。HDCB自用水率低是由其结构及运行特性决定的,它具有周期制水量大,再生步骤少,再生过程用水量少,大反洗(清洗)次数少等特性,是目前化学水处理技术中节水效果最好的一种技术。