分子马达五配位磷化学结构分析

The mechanisms of molecular motors are still unresolved problems. Based on our experiments on amino acids, the activated process of molecular motors was analyzed and original software using the method of penta-coordinated phosphorous structure was designed. Via the software, the hotspots from different molecular motors′ phosphorous activated area were obtained. It was found that the types of hotspots discovered with above methods were highly conserved. This founding provides new perspectives to study the intrinsic relationship of motion in molecular motors and also helps understanding the evolution of molecular motors.

中国磷消费结构的变化特征及其对环境磷负荷的影响

本研究先建立物质流分析模型,分析1980～2008年期间我国磷消费结构的变化特征及其对环境磷负荷的影响,随后探讨若干社会经济因素同我国磷消费污染之间的关联性.结果表明,城市生活和农村生活的人均磷养分输入分别由0.83 kg.a-1和0.75 kg.a-1增加到1.20 kg.a-1和0.99 kg.a-1,而城市生活磷养分循环比例则由62.6%下降到15.6%;畜禽养殖和种植业的磷养分输入持续增加,但前者磷养分循环比例由67.5%下降到40.5%,后者大量磷养分蓄积在农业土壤;人口、城市化水平、种植业发展水平以及畜禽养殖业发展水平与我国磷消费污染总负荷的相关系数达到0.90以上,说明它们是我国磷消费污染的重要诱因;环境Kuznets曲线研究表明我国目前仍处于初级发展阶段,牺牲环境质量以换取经济发展.研究表明,我国磷消费体系正向线性开放的代谢结构演变,磷养分流失持续增加,环境磷负荷大大加重.