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1Dynamic action simulation system and preliminary experiments of coal seams and gas显示文摘In order to study the dynamic action and physical effects of coal seams and gas,a simulation system for this dynamic action was developed and a physical model built in our laboratory.Using this newly built model,the volume of coal outbursts and the temperature during the outburst process were studied.The results show that:1) for coal seams with similar structure and components,two factors,i.e.,gas pressure and ground stress affect the volume of coal outbursts,with gas pressure being the more important of the two and 2) the changes in coal temperature,both its increase and decrease,are affected by ground stress and gas pressure,it is a process of change.Preliminary tests show that the system can simulate the dynamic interaction of coal and gas,which is helpful for studying the dynamic mechanism of solid-gas coupling of gas and coal.LI Jian-lou YAN Jia-ping XIE Yan CHEN Ping WANG Lai-bin 2009Mining Science and Technology2009,19,4:4
2动静态光散射技术在蛋白质研究中的应用进展显示文摘动静态光散射技术是研究蛋白质等大分子物质尺寸、分布、形态及构象的一种重要手段,以其快速、便捷、对样品无干扰等特点,逐步深入到生化、物理、医药病理等领域,具有良好的应用前景。本文简要阐述了光散射技术的发展,主要介绍了动静态光散射技术的原理,从流体力学半径、重均分子量、均方根回旋半径以及渗透第二维里系数4个重要的物理参数出发,对近年来动静态光散射技术在蛋白质研究中的应用进行了调研和综述,并对该技术的发展进行了展望。刘珂 高金燕 袁锦 陈红兵 佟平 2016高分子通报2016,,12:2
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