This paper seeks to investigate nonlinear out-of-plane mechanical behaviours of woven composite flexible skin(WCFS)through experimental and theoretical methods.Firstly,quasi-static experiments are carried out on recta...This paper seeks to investigate nonlinear out-of-plane mechanical behaviours of woven composite flexible skin(WCFS)through experimental and theoretical methods.Firstly,quasi-static experiments are carried out on rectangular WCFSs with different aspect ratios under uniform normal pressure to measure out-of-plane deformation and failure loads.Afterwards,a new three-parameter geometric model is presented to describe 3D geometry of pressurized WCFS,and thus,a nonlinear mechanical model is deduced for depicting the relationship between pressure and out-of-plane displacement.The application of the aforementioned models for experimental results shows that the new models have adequately and logically depicted deformation geometry and nonlinear mechanical characteristics.展开更多
目的探讨无纺布“米”字固定法在肿瘤患者经外周置入中心静脉导管(peripherally inserted central catheter,PICC)发生严重皮肤损伤中的应用效果。方法选取2012年3月至2016年8月肿瘤患者PICC发生严重皮肤损伤的病例65例作为对照组,采用...目的探讨无纺布“米”字固定法在肿瘤患者经外周置入中心静脉导管(peripherally inserted central catheter,PICC)发生严重皮肤损伤中的应用效果。方法选取2012年3月至2016年8月肿瘤患者PICC发生严重皮肤损伤的病例65例作为对照组,采用纱布敷料为主的的传统固定方法。另选2017年4月至2020年1月肿瘤患者PICC发生严重皮肤损伤的病例70例作为观察组,采用以米字贴膜敷料固定为主的改良固定方法。比较两种严重皮肤损伤处理效果。结果观察组治愈率高于对照组,差异有统计学意义(χ^(2)=20.698,P<0.001)。观察组治愈时间短于对照组,差异有统计学意义(t=1.987,P<0.001)。结论改良的米字贴膜敷料固定方法为PICC严重皮肤损伤的肿瘤患者,继续完成静脉治疗提供了一种有效的保障处理措施,其操作科学、安全、有效,值得临床推广应用。展开更多
基金supported by the National Natural Science Foundation of China(Grant No.51875021)China Postdoctoral Science Foundation(Grant No.2022M720348).
文摘This paper seeks to investigate nonlinear out-of-plane mechanical behaviours of woven composite flexible skin(WCFS)through experimental and theoretical methods.Firstly,quasi-static experiments are carried out on rectangular WCFSs with different aspect ratios under uniform normal pressure to measure out-of-plane deformation and failure loads.Afterwards,a new three-parameter geometric model is presented to describe 3D geometry of pressurized WCFS,and thus,a nonlinear mechanical model is deduced for depicting the relationship between pressure and out-of-plane displacement.The application of the aforementioned models for experimental results shows that the new models have adequately and logically depicted deformation geometry and nonlinear mechanical characteristics.
文摘目的探讨无纺布“米”字固定法在肿瘤患者经外周置入中心静脉导管(peripherally inserted central catheter,PICC)发生严重皮肤损伤中的应用效果。方法选取2012年3月至2016年8月肿瘤患者PICC发生严重皮肤损伤的病例65例作为对照组,采用纱布敷料为主的的传统固定方法。另选2017年4月至2020年1月肿瘤患者PICC发生严重皮肤损伤的病例70例作为观察组,采用以米字贴膜敷料固定为主的改良固定方法。比较两种严重皮肤损伤处理效果。结果观察组治愈率高于对照组,差异有统计学意义(χ^(2)=20.698,P<0.001)。观察组治愈时间短于对照组,差异有统计学意义(t=1.987,P<0.001)。结论改良的米字贴膜敷料固定方法为PICC严重皮肤损伤的肿瘤患者,继续完成静脉治疗提供了一种有效的保障处理措施,其操作科学、安全、有效,值得临床推广应用。
