[目的]系统评价电针治疗老年性尿失禁的有效性。[方法]通过计算机检索PubMed、Web of Science、中国知网、万方数据库、维普等数据库中发表的电针治疗老年尿失禁的临床随机对照试验,按照Cochrane协作网偏移风险评价标准对纳入的文献进...[目的]系统评价电针治疗老年性尿失禁的有效性。[方法]通过计算机检索PubMed、Web of Science、中国知网、万方数据库、维普等数据库中发表的电针治疗老年尿失禁的临床随机对照试验,按照Cochrane协作网偏移风险评价标准对纳入的文献进行质量评价,使用RevMan 5.2统计软件进行Meta分析,评价电针治疗老年性尿失禁的临床疗效。[结果]共纳入8个研究,包括522例病人。Meta分析结果显示,与对照组相比,实验组电针治疗可以提高老年性尿失禁的临床总有效率。[结论]电针治疗老年性尿失禁有较好的疗效。展开更多
We have examined the elastic snap-through behaviors of single crystal copper strips numerically and theoretically to investigate factors that influence the characteristic snap-through time scale.The strip is simply su...We have examined the elastic snap-through behaviors of single crystal copper strips numerically and theoretically to investigate factors that influence the characteristic snap-through time scale.The strip is simply supported on both ends,and the snap-through is launched by suddenly removing the concentrated forces that have already been statically applied to produce an initial bending configuration.On the one hand,the process is implemented in the molecular dynamics(MD)simulator LAMMPS.On the other hand,a theoretical formulation is provided with the consideration of surface tension.Increasing surface tension is found to increase the snap-through time.The results show that the snap-through behavior is further closely related to the magnitude of the initially stored deformation and the strip thickness.Finally,snap-through times provided by the above numerical and theoretical analyses are on the same order of magnitude.This is an interesting agreement,especially considering that the huge gap of time scales between MD simulations and experiments has been a well-known fundamental issue.We believe that the present study about spontaneous processes such as snap-through has cast some light on the fbndamental issue that deformation in MD simulations generally happens much faster than in physical experiments.展开更多
文摘[目的]系统评价电针治疗老年性尿失禁的有效性。[方法]通过计算机检索PubMed、Web of Science、中国知网、万方数据库、维普等数据库中发表的电针治疗老年尿失禁的临床随机对照试验,按照Cochrane协作网偏移风险评价标准对纳入的文献进行质量评价,使用RevMan 5.2统计软件进行Meta分析,评价电针治疗老年性尿失禁的临床疗效。[结果]共纳入8个研究,包括522例病人。Meta分析结果显示,与对照组相比,实验组电针治疗可以提高老年性尿失禁的临床总有效率。[结论]电针治疗老年性尿失禁有较好的疗效。
基金the National Natural Science Foundation of China(Grant Nos.11672119 and 11972174).
文摘We have examined the elastic snap-through behaviors of single crystal copper strips numerically and theoretically to investigate factors that influence the characteristic snap-through time scale.The strip is simply supported on both ends,and the snap-through is launched by suddenly removing the concentrated forces that have already been statically applied to produce an initial bending configuration.On the one hand,the process is implemented in the molecular dynamics(MD)simulator LAMMPS.On the other hand,a theoretical formulation is provided with the consideration of surface tension.Increasing surface tension is found to increase the snap-through time.The results show that the snap-through behavior is further closely related to the magnitude of the initially stored deformation and the strip thickness.Finally,snap-through times provided by the above numerical and theoretical analyses are on the same order of magnitude.This is an interesting agreement,especially considering that the huge gap of time scales between MD simulations and experiments has been a well-known fundamental issue.We believe that the present study about spontaneous processes such as snap-through has cast some light on the fbndamental issue that deformation in MD simulations generally happens much faster than in physical experiments.
