目的:观察头部穴域丛刺运动疗法治疗缺血性中风恢复期足下垂的临床疗效,为针灸治疗缺血性中风恢复期足下垂提供新的治疗方案。方法:将60例缺血性中风恢复期足下垂患者按随机数字表法分为观察组和对照组各30例。观察组采用运动针法,予头...目的:观察头部穴域丛刺运动疗法治疗缺血性中风恢复期足下垂的临床疗效,为针灸治疗缺血性中风恢复期足下垂提供新的治疗方案。方法:将60例缺血性中风恢复期足下垂患者按随机数字表法分为观察组和对照组各30例。观察组采用运动针法,予头部穴域丛刺结合运动疗法;对照组采用传统针刺疗法结合运动疗法。两组均在治疗前和治疗后进行下肢Fugl-Meyer(FMA)评分、踝关节主动运动(active range of motion,AROM)评分和步行能力分级(functional ambulation classification,FAC)评价,并根据治疗前后AROM测量值对比评定疗效。结果:与治疗前比较,两组FMA、AROM评分和FAC评级明显提高(P≤0.01),效果显著;观察组AROM评分改善程度优于对照组(P<0.05);FMA评分和FAC评级改善比较,差异无统计学意义(P>0.05)。观察组有效率(90.0%)和对照组有效率(83.3%)比较,差异无统计学意义(P>0.05),但观察组显效率(56.7%)明显高于对照组(46.6%)。结论:头部穴域丛刺运动疗法可明显提高缺血性中风恢复期足下垂患者踝关节主动运动能力,且疗效优于传统针刺疗法。本疗法可提升下肢FMA评分、AROM评分和FAC评级,促进患者康复,提高其生存质量。展开更多
Geometry optimization of p-C_(6)H_(4)-connected cyclo[20]carbon(p-C_(6)H_(4)-C_(20))was carried out at M062X/6-311G(d,p)level,three kinds of bond orders(Mayer,Laplacian,and Wiberg),electron-hole distributions,localize...Geometry optimization of p-C_(6)H_(4)-connected cyclo[20]carbon(p-C_(6)H_(4)-C_(20))was carried out at M062X/6-311G(d,p)level,three kinds of bond orders(Mayer,Laplacian,and Wiberg),electron-hole distributions,localized orbital locators(LOL),and infrared(IR)spectrum were also performed at the same level.Based on TD-DFT M062X/6-311G(d,p)method,the first 20 excited states and ultraviolet(UV)spectra of p-C_(6)H_(4)-C_(20) were calculated.Calculation results of π-electron delocalization analyses prove thatπ-electron delocalization of p-C_(6)H_(4)-C_(20) is more likely to occur on shorter C-C bonds rather than longer C-C bonds,and inside/outside of the ring plane rather than above/below the ring plane.Two absorption peaks of p-C_(6)H_(4)-C_(20) locate at about 319 nm and 236 nm,respectively.展开更多
Karst cave tourism plays an important role in the overall tourism of Zhejiang Province, China. In analyzing the current status of karst cave tourism resources, it is crucial to develop a scientific system for optimizi...Karst cave tourism plays an important role in the overall tourism of Zhejiang Province, China. In analyzing the current status of karst cave tourism resources, it is crucial to develop a scientific system for optimizing resource exploitation and tourism development in the future. This study conducted an analysis of resource characteristics and regional structure in Zhejiang Province. Nearest neighbor index (NNI) method and accessibility index method were used for a comprehensive understanding of the effects of scale, strength, combination, and accessibility of karst cave tourism resources. Results indicated that karst cave tourism resources in Zhejiang Province have a significant regional influence, and that resource quality and exploitation are diverse in different regions. Among the regions, Jinhua had the highest exploitation proportion of over 60% and the lowest NNI value of 0.098. Furthermore, regional analysis inferred that different karst caves demonstrate diversity in accessibility to tourism markets, among which the Lingshan Cave, Fengshui Cave, and Xianqiao Cave reveal the highest accessibility index of 2.41. Finally, we put forward a karst cave tourism system in Zhejiang Province based on the Growth Pole Theory and set up an overall scheme for karst cave tourism development. From a regional perspective analysis, the study refined the methods for regional resource re- search and provided a strategic proposal for karst cave tourism in Zheiiang Province.展开更多
Recent experiments report the rotation of FA(FA=HC[NH2]2+)cations significantly influence the excited-state lifetime of FAPbI3.However,the underlying mechanism remains unclear.Using ab initio nonadiabatic(NA)molecular...Recent experiments report the rotation of FA(FA=HC[NH2]2+)cations significantly influence the excited-state lifetime of FAPbI3.However,the underlying mechanism remains unclear.Using ab initio nonadiabatic(NA)molecular dynamics combined with time-domain density functional simulations,we have demonstrated that reorientation of partial FA cations significantly inhibits nonradiative electron-hole recombination with respect to the pristine FAPbI3 due to the decreased NA coupling by localizing electron and hole in different positions and the suppressed atomic motions.Slow nuclear motions simultaneously increase the decoherence time,which is overcome by the reduced NA coupling,extending electron-hole recombination time scales to several nanoseconds and being about 3.9 times longer than that in pristine FAPbI3,which occurs within sub-nanosecond and agrees with experiment.Our study established the mechanism for the experimentally reported prolonged excited-state lifetime,providing a rational strategy for design of high performance of perovskite solar cells and optoelectronic devices.展开更多
文摘目的:观察头部穴域丛刺运动疗法治疗缺血性中风恢复期足下垂的临床疗效,为针灸治疗缺血性中风恢复期足下垂提供新的治疗方案。方法:将60例缺血性中风恢复期足下垂患者按随机数字表法分为观察组和对照组各30例。观察组采用运动针法,予头部穴域丛刺结合运动疗法;对照组采用传统针刺疗法结合运动疗法。两组均在治疗前和治疗后进行下肢Fugl-Meyer(FMA)评分、踝关节主动运动(active range of motion,AROM)评分和步行能力分级(functional ambulation classification,FAC)评价,并根据治疗前后AROM测量值对比评定疗效。结果:与治疗前比较,两组FMA、AROM评分和FAC评级明显提高(P≤0.01),效果显著;观察组AROM评分改善程度优于对照组(P<0.05);FMA评分和FAC评级改善比较,差异无统计学意义(P>0.05)。观察组有效率(90.0%)和对照组有效率(83.3%)比较,差异无统计学意义(P>0.05),但观察组显效率(56.7%)明显高于对照组(46.6%)。结论:头部穴域丛刺运动疗法可明显提高缺血性中风恢复期足下垂患者踝关节主动运动能力,且疗效优于传统针刺疗法。本疗法可提升下肢FMA评分、AROM评分和FAC评级,促进患者康复,提高其生存质量。
文摘Geometry optimization of p-C_(6)H_(4)-connected cyclo[20]carbon(p-C_(6)H_(4)-C_(20))was carried out at M062X/6-311G(d,p)level,three kinds of bond orders(Mayer,Laplacian,and Wiberg),electron-hole distributions,localized orbital locators(LOL),and infrared(IR)spectrum were also performed at the same level.Based on TD-DFT M062X/6-311G(d,p)method,the first 20 excited states and ultraviolet(UV)spectra of p-C_(6)H_(4)-C_(20) were calculated.Calculation results of π-electron delocalization analyses prove thatπ-electron delocalization of p-C_(6)H_(4)-C_(20) is more likely to occur on shorter C-C bonds rather than longer C-C bonds,and inside/outside of the ring plane rather than above/below the ring plane.Two absorption peaks of p-C_(6)H_(4)-C_(20) locate at about 319 nm and 236 nm,respectively.
基金Under the auspices of National Natural Science Foundation of China (No. 30571524)
文摘Karst cave tourism plays an important role in the overall tourism of Zhejiang Province, China. In analyzing the current status of karst cave tourism resources, it is crucial to develop a scientific system for optimizing resource exploitation and tourism development in the future. This study conducted an analysis of resource characteristics and regional structure in Zhejiang Province. Nearest neighbor index (NNI) method and accessibility index method were used for a comprehensive understanding of the effects of scale, strength, combination, and accessibility of karst cave tourism resources. Results indicated that karst cave tourism resources in Zhejiang Province have a significant regional influence, and that resource quality and exploitation are diverse in different regions. Among the regions, Jinhua had the highest exploitation proportion of over 60% and the lowest NNI value of 0.098. Furthermore, regional analysis inferred that different karst caves demonstrate diversity in accessibility to tourism markets, among which the Lingshan Cave, Fengshui Cave, and Xianqiao Cave reveal the highest accessibility index of 2.41. Finally, we put forward a karst cave tourism system in Zhejiang Province based on the Growth Pole Theory and set up an overall scheme for karst cave tourism development. From a regional perspective analysis, the study refined the methods for regional resource re- search and provided a strategic proposal for karst cave tourism in Zheiiang Province.
基金supported by the National Natural Science Foundation of China(No.21573022 and No.51861135101)the Recruitment Program of Global Youth Experts of Chinathe Beijing Normal University Startup。
文摘Recent experiments report the rotation of FA(FA=HC[NH2]2+)cations significantly influence the excited-state lifetime of FAPbI3.However,the underlying mechanism remains unclear.Using ab initio nonadiabatic(NA)molecular dynamics combined with time-domain density functional simulations,we have demonstrated that reorientation of partial FA cations significantly inhibits nonradiative electron-hole recombination with respect to the pristine FAPbI3 due to the decreased NA coupling by localizing electron and hole in different positions and the suppressed atomic motions.Slow nuclear motions simultaneously increase the decoherence time,which is overcome by the reduced NA coupling,extending electron-hole recombination time scales to several nanoseconds and being about 3.9 times longer than that in pristine FAPbI3,which occurs within sub-nanosecond and agrees with experiment.Our study established the mechanism for the experimentally reported prolonged excited-state lifetime,providing a rational strategy for design of high performance of perovskite solar cells and optoelectronic devices.