By employing molecular mechanics and molecular dynamics simulations, we investigate the radial collapses and elasticities of different chiral single-walled carbon nanotubes （SWCNTs） with divacancy, and 5-8-5 defects...By employing molecular mechanics and molecular dynamics simulations, we investigate the radial collapses and elasticities of different chiral single-walled carbon nanotubes （SWCNTs） with divacancy, and 5-8-5 defects. It is found that divacancy and 5-8-5 defect can reduce the collapse pressure （Pc） of SWCNT （10, 10） while 5-8-5 defect can greatly increase Pc of SWCNT （17, 0）. For example, 5-8-5 defect can make Pc of SWCNT （17, 0） increase by 500%. A model is established to understand the effects of chirality, divacancy, and 5-8-5 defect on radial collapse of SWCNTs. The results are particularly of value for understanding the mechanical behavior of SWCNT with divacancy, and the 5-8-5 defect that may be considered as a filler of high loading composites.展开更多
目的:探究桡动脉掌浅支腕横纹皮瓣游离移植修复手指软组织缺损的临床疗效。方法:选择2019年1月-2021年12月笔者医院收治的23例手指软组织缺损患者为研究对象,均给予桡动脉掌浅支腕横纹皮瓣游离移植修复治疗,术后随访6~12个月,评估疗效...目的:探究桡动脉掌浅支腕横纹皮瓣游离移植修复手指软组织缺损的临床疗效。方法:选择2019年1月-2021年12月笔者医院收治的23例手指软组织缺损患者为研究对象,均给予桡动脉掌浅支腕横纹皮瓣游离移植修复治疗,术后随访6~12个月,评估疗效、手指功能[Michigan手部功能问卷(Michigan hand outcomes quest ionnaire,MHQ)]及徒手肌力。结果:本组23例患者皮瓣均完全存活,手术优良率为100.00%,其中优14例,良9例;手术操作时间(3.16±0.21)h,术中出血量(83.27±6.59)ml,创面愈合时间(18.03±2.12)d;皮瓣两点分辨觉(7.41±0.43)mm。术后6个月MHQ评分:整体手功能(80.02±5.17)分,日常活动(78.94±6.13)分,工作情况(79.17±6.02)分,疼痛(77.02±6.13)分,外观(81.16±5.02)分,手功能满意程度(83.02±3.95)分。术后6个月肌力:4级5例,5级18例。随访期间出现术后创缘部分坏死1例,并发症发生率为4.35%。结论:桡动脉掌浅支腕横纹皮瓣游离移植修复手指软组织缺损疗效好,可有效恢复手指功能及徒手肌力,患者满意程度较高。展开更多
基金Project supported by the National Natural Science Foundation of China(Grant No.11374372)Natural Science Foundation of Shandong Province,China(Grant No.ZR2014EMQ006)+3 种基金the Postdoctoral Science Foundation of China(Grant No.2014M551983)the Postdoctoral Applied Research Foundation of Qingdao City,China(Grant No.2014)the Fundamental Research Funds for the Central Universities,China(Grant Nos.12CX04087A and 14CX02018A)the Qingdao Science and Technology Program,China(Grant No.14-2-4-27-jch)
文摘By employing molecular mechanics and molecular dynamics simulations, we investigate the radial collapses and elasticities of different chiral single-walled carbon nanotubes （SWCNTs） with divacancy, and 5-8-5 defects. It is found that divacancy and 5-8-5 defect can reduce the collapse pressure （Pc） of SWCNT （10, 10） while 5-8-5 defect can greatly increase Pc of SWCNT （17, 0）. For example, 5-8-5 defect can make Pc of SWCNT （17, 0） increase by 500%. A model is established to understand the effects of chirality, divacancy, and 5-8-5 defect on radial collapse of SWCNTs. The results are particularly of value for understanding the mechanical behavior of SWCNT with divacancy, and the 5-8-5 defect that may be considered as a filler of high loading composites.
文摘目的:探究桡动脉掌浅支腕横纹皮瓣游离移植修复手指软组织缺损的临床疗效。方法:选择2019年1月-2021年12月笔者医院收治的23例手指软组织缺损患者为研究对象,均给予桡动脉掌浅支腕横纹皮瓣游离移植修复治疗,术后随访6~12个月,评估疗效、手指功能[Michigan手部功能问卷(Michigan hand outcomes quest ionnaire,MHQ)]及徒手肌力。结果:本组23例患者皮瓣均完全存活,手术优良率为100.00%,其中优14例,良9例;手术操作时间(3.16±0.21)h,术中出血量(83.27±6.59)ml,创面愈合时间(18.03±2.12)d;皮瓣两点分辨觉(7.41±0.43)mm。术后6个月MHQ评分:整体手功能(80.02±5.17)分,日常活动(78.94±6.13)分,工作情况(79.17±6.02)分,疼痛(77.02±6.13)分,外观(81.16±5.02)分,手功能满意程度(83.02±3.95)分。术后6个月肌力:4级5例,5级18例。随访期间出现术后创缘部分坏死1例,并发症发生率为4.35%。结论:桡动脉掌浅支腕横纹皮瓣游离移植修复手指软组织缺损疗效好,可有效恢复手指功能及徒手肌力,患者满意程度较高。
