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节奏本是指音乐中交替出现的有规律的强弱、长短的现象,隶属于艺术范畴。语文教学的节奏艺术是语文教学艺术园中的一支奇葩,她以教学语言的抑扬顿挫,教学内容的疏密相间,教学方式的交替交换,教学节奏的和谐统一等手段营造出丰富多彩、引人入胜的语文课堂教学氛围,既能教给学生知识和技能,指导学习过程和方法,又能给学生以美的享受,陶冶情感意志、价值观。对学生终身发展的影响也是相当深广的。教师要善于运用节奏规律来组织课堂教学,以求实现课堂教学的最优化。因此,研究语文课堂教学的节奏调控,不仅具有重要的理论意义,而且具有重要的实践意义。 相似文献
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The influence of water on protein conformation was investigated by simulating the molecular dynamics of a model protein lysozyme in different water systems.The lysozyme-water system with TIP3P water model and lysozyme-water cluster system with six-ring water model were evaluated.In addition,the radial distribution function of solvent around lysozyme was calculated.It is found that the distribution of water molecules around lysozyme is similar to that of water clusters.The analyses of dihedral angles and disulfide bonds of lysozyme show that the conformation of lysozyme is severely damaged in the lysozyme-water cluster system compared with that in the lysozyme-water system.This difference can be attributed to the formation of larger number of intermolecular hydrogen bonds between lysozyme and water cluster.It is in agreement with the analysis that water clusters can change the degree of denaturation in the process of heat denaturation of lysozyme. 相似文献
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