铝电解槽炭渣的综合利用研究

研究了铝电解槽炭渣的组成和浮选法综合利用工艺。试验表明：浮选法能使炭渣中的炭和电解质得到良好的分离；浮选炭粉可用作制造自烙铝电解槽阳极的配料；浮选电解质经600℃焙烧后再用作铝电解质。本工艺流程简单，成本低，易于工业化应用。     

PMMA包覆铝酸锶发光粉的制备与表征

采用乙二醇/水为分散介质,以过硫酸钾为引发剂,通过AA/MMA聚合反应,制得PMMA包覆铝酸锶发光粉。采用IR、SEM、荧光光谱仪、酸度计等分析手段对包覆粉进行了分析表征。结果表明:PMMA在发光粉表面形成包覆层,包覆层对发光粉发光特性的影响较小,包覆后发光粉的耐水性显著提高。     

化学合成生物降解高分子材料的研究现状

综述了国内外近年来通过化学方法合成的各种可生物降解高分子材料,对其合成方法、降解原理、研究现状及研究热点进行了简单的概述,旨在为可生物降解材料的发展作铺垫。     

Experimental investigation on narrow gap heat transfer with porous media under downward-facing horizontal heated surface

An experimental study of horizontal narrow gap heat transfer of porous media under a round downward-facing heated plate has been carried out, using water as the working fluid. The boiling curves are obtained with different gap size, plate diameter and solid spherules. The results show that the heat transfer increases significantly with porous media in the gap especially under boiling condition, and the occurrence of pool boiling crisis would be brought forward when the gap size is very small. The results also indicate that the heat transfer in horizontal narrow gap can be enhanced by increasing the ratio of gap size to plate diameter and using porous media with high thermal conductivity. Based on the mechanism of heat transfer of porous media, the correlations for natural convection and nucleate boiling are proposed to predict the heat flux.     

Safety study on HIC containing waste resin with respect to hydrogen release

To explore the behavior of radiolytically produced hydrogen release from the waste resin stored in a high integrated container(HIC), and the mechanism of hydrogen diffusion in a near-surface disposal facility, both experimental studies and numerical simulations were performed through an accelerated irradiation test and simulated disposal, respectively. Results indicated that,100 years after disposal, the highest hydrogen concentration appeared in the cell where the HICs were placed. The volume fraction for different scenarios postulated in the numerical simulation was 2.64% for Scenario 1, 2.28% for Scenario 2, and 3.965% for Scenario 3, all of which are lower than the hydrogen explosion limit of 4.1%. The results indicated that the simulated HIC disposal scheme is safe.     

核通风净化系统泄漏率检测试剂替代研究现状

概述了核通风净化系统中的高效过滤器和碘吸附器泄漏率检测所用DOP和R-11试剂的替代研究及应用状况,并对国内展开此方面研究提出了建议。     

胶原蛋白的应用及其发展前景(续)

结合胶原蛋白的结构特点及性能 ,说明它在生物、医学、食品、化妆品中的应用进展及其前景。     

数控机床总线故障的诊断及处理

<正>现代数控系统通常采用工厂自动化车间级监控和现场设备层数据通信与控制的现场总线技术,总线网络上的任何一处节点或通讯电缆连接故障,都会造成整个数控系统无法工作,查找故障要求较强的专业能力。下面摘取两个西门子系统总线故障的维修案例,来分析和总结准确判断和排除总线故障的不同方法。     

Effects of chitosan coating on quality and shelf life of silver carp during frozen storage

The effects of chitosan coating on quality and shelf life of silver carp during frozen storage were investigated. Fish samples were treated with aqueous solution of 2% chitosan, and then stored at −3 °C for 30 days. The control and the treated fish samples were analyzed periodically for microbiological (total viable count), chemical (pH, TBA, TVB-N, K-value), and sensory characteristics. The results indicated that the effect of chitosan coating on fish samples was to retain their good quality characteristics and extend the shelf life during frozen storage, which was supported by the results of microbiological, chemical, and sensory evaluation analyses.     

植酸的体内抗氧化活性研究

将Specific pathogen free(SPF)级昆明小鼠随机分为药物组和正常对照组,分别灌胃植酸和生理盐水,30 d后经眼球职血和颈椎脱臼法处死,制取血清和肝组织匀浆,并测定其中总抗氧化能力(T-AOC)、超氧化物歧化酶(SOD),谷胱甘肽过氧化物酶(GSH-Px)、过氧化氢酶(CAT)的活性和丙二醛(MDA...