太赫兹与水的相互作用:机理、应用和新趋势

自21世纪以来,太赫兹技术因受到世界各国的重视和扶持而取得迅猛发展.介绍液态水分子网络在太赫兹波段的振动和弛豫模式,以及太赫兹波与水分子之间相互作用的原理.评述基于此机理太赫兹在生物医学,尤其是关于癌症检测领域的发展与挑战,介绍了本课题组目前开展的工作.展望围绕太赫兹波与水相互作用产生的新研究与新技术.

Global Optimization for the Synthesis of Integrated Water Systems with Particle Swarm Optimization Algorithm

The problem of optimal synthesis of an integrated water system is addressed in this study, where water using processes and water treatment operations are combined into a single network such that the total cost of fresh water and wastewater treatment is globally minimized. A superstructure that incorporates all feasible design alterna- tives for wastewater treatment, reuse and recycle, is synthesized with a non-linear programming model. An evolutionary approach--an improved particle swarm optimization is proposed for optimizing such systems. Two simple examples are .Presented.to illustrate the global op.timization of inte.grated water networks using the proposed algorithm.

现场水配制纳米驱油剂及其驱油机理

采用氧谱核磁共振(17O-NMR)技术研究iNanoW1.0纳米粒子与长庆姬塬油田现场水配制纳米驱油剂的可行性。实验结果表明,iNanoW1.0纳米粒子能够减弱具有较高矿化度的现场水分子间的氢键缔合作用。对长庆姬塬油田现场水,质量分数为0.1%的纳米驱油剂为最佳使用浓度。利用低场核磁共振(LF-NMR)岩心驱替实验研究了纳米驱油剂对低—超低渗透岩心的驱替效果。实验结果表明,现场水配制的纳米驱油剂能有效降低低—超低渗透岩心中流体的启动压力,尤其对于岩心小孔隙部分扩大波及体积明显,可以实现提高采收率10.29%~11.44%。