毛细管等速电泳仪电路

提出了适用于等速电泳的电路,应用本电路装置的开放式毛细管等速泳仪对阴、阳离子的分离测定取得满意的结果。     

纳米SnO2材料的低温电阻特性

本文研究了纳米SnO2材料在低温下（15－290K）的电阻特性，以及颗粒度对样品电阻特性变化的影响，并给出了材料的导电机理。     

DEGREE OF SUBSTITUTION OF THE IONIZED STARCHES AND THEIR ADHESIVE CAPACITY TO POLYESTER / COTTON FIBERS

Adhesive capacity of quaternary ammonium starch and starch phosphate to the polyester / cotton fibers was studied by means roving method for the purpose of improving the sizing performance and decreasing the cost. By introducing different amount of quaternary ammonium or phosphate groups onto starch molecules, the modified starch with a series of defferent degree of substitution was prepared. Therefore the regularity of adhesive capacity, extended property and size-absorbing ability with the change in degree of substitution (DS) was obtained through the researches. The experiments demonstrate that the DS of the two modified starches show a marked influence upon the properties mentioned above. The starch phosphate is superior to quaternary ammonium starch as warp size for polyester / cotton yarns from the viewpoint of adhesive capacity and cost, although both of them are better than natural one. To improve the adhesive capacity to polyester / cotton fibers, DS≥0.027 is necessary for quaternary ammonium s     

A survey on routing in wireless sensor networks

One of the most important issues in wireless sensor networks is data delivery service between sensors and the data collection unit (called sink). Although sensor networks and mobile ad hoc networks are similar to some extent, they are radically distinct in many aspects. Sensor networks have many unique features, making them more challenging and need further research efforts. The existing routing protocols for sensor networks can be classified as indicator-based and indicator-free. In this survey, we make a comparative study of these protocols. Open issues and research directions are pointed out as guidelines for our future work.     

Recovery Properties of Polysulfone Hollow Fiber Chelating Membrane Modified with Thiourea for Mercury （ Ⅱ ）

The adsorption isotherms of the polysulfone hollow fiber chelating membrane modified with thionrea as chelating groups for Hg^2＋ were determined. The effects of mobile phase conditions and the operating parameters on removal performance of the chelating membrane for Hg^2＋ were also investigated. The recovery of Hg^2＋ decreased at low pH and the optimum range of pH was from 6 to 7. The feed concentration effected on recovery of Hg^2＋ at the specified loading amount of Hg^2＋. The Hg^2＋ could be removed from different concentration feed solution by chelating membrane. The increase of feed flow rate led to slight decrease of recovery of Hg^2＋ at the specified loading amount of Hg^2＋. The chelating membrane could be operated at height feed flow rate and a large-scale removal of H^2＋ could be realized. With the increase of load amount, Hg^2＋ recovery decreased, but the saturation degree of chelating membrane increased. According to required recovery of H^2＋ and the saturation degree of chelating membrane, the optimum loading amount of Hg^2＋ should be selected in the actual removal of H^2＋.     

商丘、宁陵、民权三县农业生产结构分析

商丘、宁陵、民权三县是黄淮海平原低产区的重点综合治理区。本文基于对三县农业生产条件及其历史发展的调查,对该区的农业生产结构及其与生产条件的关系进行了初步分析,为充分发挥本区自然优势,有效地利用外资,彻底治理黄淮海低产区,提出了初步的调整意见,并预测了今后应遵循的发展方向。     

《孙子兵法》在体育教学中的运用

《孙子兵法》虽为古代兵书，但它所蕴含的军事、哲学、管理等思想也适用于体育教学，对于体育教师的教学有很好的借鉴和指导作用。从“五事七计”的内容论述教学之道，以计为首；体育教师要具备的基本素质是智、信、仁、勇、严；备课要做到“知彼知己、百战不殆”；教学管理体现“令之以，齐之以武”的原则；利用“造势”来创造良好的课堂教学气氛。     

安徽省十二所高校体育教学改革及发展对策研究

采用文献调研、观察、访谈、问卷、数理统计等方法,对安徽省12所高校体育教学现状进行调查研究,据此做出分析与评论并提出四点建议.     

仿人形机器人两眼的运动模型和控制方法研究

以人的视觉生理学和解剖学的研究成果为基础，对人类两眼的协调运动、辐辏运动、前庭动眼反射、视机性反射和滑动性眼球运动等视觉机能进行研究，以简化人类复杂的视觉神经网络及其反馈控制系统，并建立起仿人形机器人两眼的运动模型和控制方法。仿真实验结果表明提出的仿人形机器人两眼的运动模型和控制方法是有效的。     

稀土金属合金纳米粒子制备及特性研究

采用直流等离子体电弧法在甲烷，氢氩气氛下制备了钐铁合金的多种纳米粉，在甲烷气氛下没有钐或铁的氧化物生成，反应生成Fe3C，在氢氩气氛下，有钐的氧化物存在，在纯甲烷气氛下制备的样品的矫顽力大，在氢氩氯氛下制备的纳米颗粒的饱和磁化强度和剩余磁化强度高，而且矫顽力也不低。