目的:研究全口义齿初戴前后辅音的音声特征。方法: 应用计算机语音分析系统测量30例全牙列缺失患者在全口义齿初戴前、初戴时、初戴后1周、2周、4周、8周时,/zi/、/ji/的F1、F3值。结果: F1 值大多在义齿初戴后逐渐降低,F3值在两组变化...目的:研究全口义齿初戴前后辅音的音声特征。方法: 应用计算机语音分析系统测量30例全牙列缺失患者在全口义齿初戴前、初戴时、初戴后1周、2周、4周、8周时,/zi/、/ji/的F1、F3值。结果: F1 值大多在义齿初戴后逐渐降低,F3值在两组变化趋势不同。结论:减少全口义齿基托厚度,重建腭皱形态有助于牙列缺失患者语音功能的恢复,计算机语音分析系统可对全口义齿初戴前后患者语音变化特征进行定量分析,对临床修复有较好的指导意义。展开更多
Sandwich composite material possesses advantages of both light weight and high strength. Although the mechanical behaviors of sandwich composite material with the influence of single external environment have been int...Sandwich composite material possesses advantages of both light weight and high strength. Although the mechanical behaviors of sandwich composite material with the influence of single external environment have been intensively studied, little work has been done in the study of mechanical property, in view of the nonlinear behavior of sandwich composites in the complicated external environments. In this paper, the problem about the bending of the three-layer elastic-plastic rod located on the elastic base, with a compressibly physical nonlinear core, has been studied. The mechanical response of the designed three-layer elements consisting of two bearing layers and a core has been examined. The complicated problem about curving of the three-layer rod located on the elastic base has been solved. The convergence of the proposed method of elastic solutions is examined to convince that the solution is acceptable. The calculated results indicate that the plasticity and physical nonlinearity of materials have a great influence on the deformation of the sandwich rod on the elastic basis.展开更多
柔性染料敏化太阳能电池(Flexible Dye-Sensitized Solar Cell,FDSSC)具有质量轻、柔性好和耐冲击等优点,吸引了研究者们的广泛关注。作为电池的重要组成部分,光阳极是激发和收集电子的区域,其性能决定了电池的转化效率。简要介绍了FDSS...柔性染料敏化太阳能电池(Flexible Dye-Sensitized Solar Cell,FDSSC)具有质量轻、柔性好和耐冲击等优点,吸引了研究者们的广泛关注。作为电池的重要组成部分,光阳极是激发和收集电子的区域,其性能决定了电池的转化效率。简要介绍了FDSSC的结构和工作机理,然后综述了其光阳极的研究进展,并着重探讨了塑料基底光阳极和金属基底光阳极的制备。最后总结了FDSSC未来发展的机遇与挑战,以期为其制备提供参考和帮助。展开更多
文摘目的:研究全口义齿初戴前后辅音的音声特征。方法: 应用计算机语音分析系统测量30例全牙列缺失患者在全口义齿初戴前、初戴时、初戴后1周、2周、4周、8周时,/zi/、/ji/的F1、F3值。结果: F1 值大多在义齿初戴后逐渐降低,F3值在两组变化趋势不同。结论:减少全口义齿基托厚度,重建腭皱形态有助于牙列缺失患者语音功能的恢复,计算机语音分析系统可对全口义齿初戴前后患者语音变化特征进行定量分析,对临床修复有较好的指导意义。
基金the National Natural Science Foundation of China(No.10772092)
文摘Sandwich composite material possesses advantages of both light weight and high strength. Although the mechanical behaviors of sandwich composite material with the influence of single external environment have been intensively studied, little work has been done in the study of mechanical property, in view of the nonlinear behavior of sandwich composites in the complicated external environments. In this paper, the problem about the bending of the three-layer elastic-plastic rod located on the elastic base, with a compressibly physical nonlinear core, has been studied. The mechanical response of the designed three-layer elements consisting of two bearing layers and a core has been examined. The complicated problem about curving of the three-layer rod located on the elastic base has been solved. The convergence of the proposed method of elastic solutions is examined to convince that the solution is acceptable. The calculated results indicate that the plasticity and physical nonlinearity of materials have a great influence on the deformation of the sandwich rod on the elastic basis.
文摘柔性染料敏化太阳能电池(Flexible Dye-Sensitized Solar Cell,FDSSC)具有质量轻、柔性好和耐冲击等优点,吸引了研究者们的广泛关注。作为电池的重要组成部分,光阳极是激发和收集电子的区域,其性能决定了电池的转化效率。简要介绍了FDSSC的结构和工作机理,然后综述了其光阳极的研究进展,并着重探讨了塑料基底光阳极和金属基底光阳极的制备。最后总结了FDSSC未来发展的机遇与挑战,以期为其制备提供参考和帮助。
