二阶孤子的传输和相互作用

用分步傅里叶变换法求解二阶孤子传输的非线性薛定谔方程, 得到了在此条件下孤子传输的数值图形, 发现二阶孤子在传输中被压缩, 幅值振荡变化。2个二阶孤子在传输过程中没有出现象2个一阶孤子那样周期性碰撞, 但2个二阶孤子时间间隔较小时, 随传输距离在2个二阶孤子中间周期性地衍生出第3个孤子。研究证明：二阶孤子的传输具有与一阶孤子明显不同的特征。     

Fe(0)/Cu双金属还原与Fenton氧化集成工艺处理印染生化尾水树脂脱附液的研究

通过比较Fe(0)和Fe(0)/Cu还原工艺处理印染生化尾水树脂脱附液的效果,发现Fe(0)/Cu双金属还原对脱附液TOC和UV254去除率均优于Fe(0)。若将Fe(0)/Cu双金属还原与Fenton氧化工艺集成可以进一步提高处理效果。该组合工艺处理后,TOC去除率高达66%,UV254去除率高于90%,脱附液的BOD5/CODcr从低于0.1升高至0.38左右。由此可见,该组合工艺对复合功能树脂碱脱附液具有良好的处理效果,处理后废水的毒性降低,可生化性显著提高,为其返回生物系统进一步生化降解提供了较好的保证。     

Multiscale molecular dynamics simulations of membrane remodeling by Bin/Amphiphysin/Rvs family proteins

Membrane curvature is no longer thought of as a passive property of the membrane; rather, it is considered as an active, regulated state that serves various purposes in the cell such as between cells and organelle definition. While transport is usually mediated by tiny membrane bubbles known as vesicles or membrane tubules, such communication requires complex interplay between the lipid bilayers and cytosolic proteins such as members of the Bin/Amphiphysin/Rvs(BAR) superfamily of proteins. With rapid developments in novel experimental techniques, membrane remodeling has become a rapidly emerging new field in recent years. Molecular dynamics(MD) simulations are important tools for obtaining atomistic information regarding the structural and dynamic aspects of biological systems and for understanding the physics-related aspects. The availability of more sophisticated experimental data poses challenges to the theoretical community for developing novel theoretical and computational techniques that can be used to better interpret the experimental results to obtain further functional insights. In this review, we summarize the general mechanisms underlying membrane remodeling controlled or mediated by proteins. While studies combining experiments and molecular dynamics simulations recall existing mechanistic models, concurrently, they extend the role of different BAR domain proteins during membrane remodeling processes. We review these recent findings, focusing on how multiscale molecular dynamics simulations aid in understanding the physical basis of BAR domain proteins, as a representative of membrane-remodeling proteins.