一种超分子弹性体的制备及其自修复性能的研究——大学化学综合实验设计

介绍了一个研究型大学化学综合实验——一种超分子弹性体的制备及其自修复性能的研究.主要包括聚合物复合物的制备、表征及修复性能研究.通过本实验的实践,学生可以掌握超分子作用力的特点及其在制备可修复材料领域的应用.本实验有助于拓宽学生的化学视野,对培养学生的创新能力和对知识的综合运用能力具有重要作用.     

Symmetry groups and Gauss kernels of Schrdinger equations

The relationship between symmetries and Gauss kernels for the Schrdinger equation iu_t=u_xx+f（x）u is established.It is shown that if the Lie point symmetries of the equation are nontrivial,a classical integral transformations of the Gauss kernels can be obtained.Then the Gauss kernels of Schrdinger equations are derived by inverting the integral transformations.Furthermore,the relationship between Gauss kernels for two equations related by an equivalence transformation is identified.