Using biomechanics methods , through the study of the influence of different injection and maintain period on the expansion efficacy and shrinkage rate of skin , a rapid expansion method with relatively big expansion area is proposed ; biomechanics analysis in vivo is been made on the expanded skin ; comparing the biomechanics property in vitro of the rapid expansion and conventional expansion with different maintaining times , the parameters such as strength , stress - strain relationship , stress relaxation and creep which reflect the characteristic of the expanded skin have been obtained ; making the research of the expanded skin ' s biomechanics changes at different stage after grafting , the long - term and short term diversified regular has been obtained ; making experimental study and discussing the changes in the microcirculation and vessel structure of exceedingly expanded shin , the relationship between survival length of flap and the changes has been gotten 本课题旨在用生物力学的方法通过动物实验来研究不同注水扩张期和维持扩张期对皮肤扩张量和皮肤回缩的影响，探讨有效获取较大的扩张皮肤面积的快速扩张方法；对扩张皮肤进行在体生物力学特性分析；比较了快速扩张和常规扩张在不同维持期的皮肤离体生物力学特性，得到离体生物力学各参数，如强度、应力?应变、应力松弛、蠕变等；为全面了解扩张皮肤在移植后的近期和远期的变化规律，做了扩张皮肤移植后不同阶段的生物力学变化的实验研究；探讨了不同扩张量时皮肤的微循环变化和血管结构变化与皮瓣存活的关系。
By the way of stress analysis of bank slope , the positions of different laying depths are found , where the stress state is close to that of semi - infinite plane . then the shape of stress slack zone can be confirmed to acquire the safe rule of laying foundation for bridge design . and the engineering applications prove its correctness 本文通过岸坡应力分析法，找到不同深度下基础附近应力接近半无限平面(即消除岸坡边界影响)的位置，从而确定应力松弛带形态，为桥梁设计提供基础安全埋置准则，而工程应用结果也验证了该方法的正确性。
Abstract : new progress of raman technique in the research on macromolecule science recent years was summarized in this paper including the miscibility of polymer blends , the mechanism of surface plasticization , the monitoring of stress and strain relaxation process , raman imaging , the monitoring of polymerization , determination of curing process , the monitoring of crystal process in polymer and the study on the structure of water and intra - and inter molecular interactions in the solution of polymer and gelatin . a great deal of research of raman technique in this aspects were also summarized 文摘:综述了拉曼技术在高分子科学研究中近年来的最新进展，包括聚合物共混物的相容性、表面增塑机理、应力松弛和应变过程的监测以及拉曼成像、聚合反应监控、固化过程监测、聚合物结晶过程监控、聚合物水溶液和凝胶体系中水的结构及分子间、分子内相互作用力的研究。
