碳气凝胶的制备及其电除盐性能的研究

在常压条件下通过溶胶-凝胶法和碳化、活化工艺制备碳气凝胶材料.用SEM和BET比表面积测量等手段对材料的表面形貌和微观结构进行分析表征,通过循环伏安法对材料的电化学性能进行研究.联系材料的微观结构和电化学性能,对碳气凝胶的电除盐过程和除盐机理进行了研究和分析,发现碳气凝胶是一种具有很大应用潜力的多孔电极吸附材料.     

Arc-Discharge Synthesis and Microstructure Characterization of AlN Nanowires

AIN nanowires with a hexagonal structure were synthesized using an improved arc-discharge method and their microstructures were characterized using a high-resolution transmission electron microscope. The synthesized AIN nanowires were of various shapes. Their diameters ranged from 20 to 110 nm and the lengths were up to 20μm. Most of the AIN nanowires were coated by an amorphous layer of aluminum oxide. Fabrication yield was about several grams. The growth mechanism was considered to be a vapor-liquid-solid process and an Al droplet formed on the top of as-grown AIN nanowire played a role of catalyst.     

Nano ZrO2 Particulate-reinforced Lead-Free Solder Composite

A lead-free solder composite was prepared by adding ZrO2 nanopowders in eutectic Sn-Ag alloy. Microstrucrural features and microhardness properties of those solders with different ZrO2 nanopowder fraction were examined. Results indicate that the addition of ZrO2 nanopowders reduced the size of β-Sn grains and restrained the formation of bulk Ag3Sn intermetallic compounds （IMCs） due to the adsorption effect of the ZrO2 particles. The Vicker＇s hardness of the obtained lead-free solder composites fits well with the HalI-Petch relationship. The refinement of β-Sn grains favors to improve the microhardness of composite solders.     

Preparation and Characterization of Silica Aerogels Derived from Ambient Pressure

Silica aerogels were prepared by sol-gel technique from industrial silicon derivatives (polyethoxydisiloxanes, E-40), followed by silylation and drying under ambient pressure. The specific surface area, pore size distribution and thermal conductivity of the silica aerogels were investigated and the results showed that the diameter of the silica particles is about 6 nm and the average pore size of the silica aerogels is 14.7 nm. The specific surface area of which is about 1000 m2·g-1 and the thermal conductivity is about 0.014 wm-1·K-1 at room temperature and pressure of 1.01×105 Pa. The Si-CH3 groups were also detected on the internal surface of the silica aerogels, which show hydrophobic. Silica aerogels derived by this technique is low cost and have wide applications.     

钢铁厂尘泥资源化管理与利用

传统的钢铁厂尘泥处理方法难以实现尘泥资源的有效回收利用．从可持续发展的观点来看,钢铁生产过程中产生的尘泥是一种资源,必须按照管理资源的模式来处理和利用尘泥．本文提出了应从设计、生产组织及管理等方面对尘泥进行资源化管理,并针对钢铁厂的几种主要尘泥如精轧铁鳞、轧钢铁鳞、转炉尘等提出回收利用的方法．     

加强氢能和燃料电池研究的国际合作——第三届广州国际燃料电池会议回顾

介绍了第三届广州国际燃料电池会议的情况,150多人参加了会议,提交了论文89篇。会议期间召开了中英双边座谈会。本次会议对加强国际合作起了重要作用。     

真空激光系统在龚嘴、铜街子大坝监测中的应用情况

本文通过对龚嘴和铜街子大坝上三条真空激光系统的运行情况介绍和对监测资料的分析,说明真空激光系统在大坝安全监测中应用是成功的,且具有较好的推广价值。     

铜街子水电站大坝变形监测系统更新改造

铜街子水电站已运行10余年,本文介绍了铜街子大坝变形监测系统的设置情况及存在的主要问题,并针对存在的问题提出了大坝变形监测系统改造的总体方案,总结了近几年来大坝观测设施的更新改造情况及运行效果。     

纳豆菌液态发酵制备蚕蛹肽的工艺优化及其抗炎活性研究

为提高蚕蛹的资源利用率和产品附加值,本研究以蚕蛹蛋白为原料,通过纳豆菌液态发酵制备蚕蛹肽.通过单因素实验和响应面试验确定最佳发酵工艺条件;采用脂多糖诱导RAW264.7巨噬细胞建立细胞炎症模型,对最佳发酵工艺参数组合下获得的蚕蛹肽进行体外抗炎活性研究.结果表明:蚕蛹肽的最佳发酵工艺条件为接种量5.0 mL、蚕蛹蛋白添加...     

加强客户端用电安全管理的分析

随着电力体制改革的深化,供电企业与电力客户之间的产权界定有了新的划分,客户端用电不安全事件时有发生,对电网安全运行造成影响。对客户端用电管理进行了调查分析,提出了建立供、用、管“三位一体”的客户端电气安全管理机制,从根本上解决客户端电气安全管理中存在的问题,理顺电气安全管理秩序。