The absolute partial and total cross sections for electron impact ionization of carbon monoxide are reported for electron energies from 350 eV to 8000 eV.The product ions(CO^(+),C^(+),O^(+),CO^(2+),C^(2+),and O^(2+))a...The absolute partial and total cross sections for electron impact ionization of carbon monoxide are reported for electron energies from 350 eV to 8000 eV.The product ions(CO^(+),C^(+),O^(+),CO^(2+),C^(2+),and O^(2+))are measured by employing an ion imaging mass spectrometer and two ion-pair dissociation channels(C^(+)+O^(+)and C^(2+)+O^(+))are identified.The absolute cross sections for producing individual ions and their total,as well as for the ion-pair dissociation channels are obtained by normalizing the data of CO^(+)to that of Ar^(+)from CO-Ar mixture target with a fixed 1:1 ratio.The overall errors are evaluated by considering various kinds of uncertainties.A comprehensive comparison is made with the available data,which shows a good agreement with each other over the energy ranges that are overlapped.This work presents new cross-section data with electron energies above 1000 eV.展开更多
The semiclassical non-perturbative atomic orbital close-coupling approach has been employed to study the electron capture and excitation processes in He^(2+)-H(1s)and He^(2+)-H(2s)collision systems.In order to ensure ...The semiclassical non-perturbative atomic orbital close-coupling approach has been employed to study the electron capture and excitation processes in He^(2+)-H(1s)and He^(2+)-H(2s)collision systems.In order to ensure the accuracy of our calculated cross sections,a large number of high excited states and pseudostates are included in the expansion basis sets which are centered on the target and projectile,respectively.The total and partial charge transfer and excitation cross sections are obtained for a wide-energy domain ranging from 1 keV/amu to 200 keV/amu.The present calculations are also compared with the results from other theoretical methods.These cross section data are useful for the investigation of astrophysics and laboratory plasma.展开更多
目的:探讨四子散热敷及艾灸对全膝关节置换术后疼痛及康复的效果。方法:收集2020年1月~2022年8月在本院进行全膝关节置换术患者的68例,采用随机数字表法分组,即热敷组(n=22)、热敷联合艾灸组(n=24)、电磁波治疗仪组(n=22)。统计三组患...目的:探讨四子散热敷及艾灸对全膝关节置换术后疼痛及康复的效果。方法:收集2020年1月~2022年8月在本院进行全膝关节置换术患者的68例,采用随机数字表法分组,即热敷组(n=22)、热敷联合艾灸组(n=24)、电磁波治疗仪组(n=22)。统计三组患者治疗前后视觉模拟评分法(Visual Analogue Score,VAS)评分、美国特种外科医院膝关节评分(Hospital for special surgery,HSS)、中医症候疗效、中医症候积分。结果:治疗前、治疗后1 d,三组VAS评分比较无统计学意义,P>0.05;治疗后1周、治疗后2周,三组VAS评分比较有显著差异,P<0.05,组间比较,热敷联合艾灸组VAS评分均较热敷组、电磁波治疗仪组较低,热敷组、电磁波治疗仪组VAS评分比较无统计学差异,P>0.05。治疗前、治疗后1 d,三组HSS评分比较无统计学差异,P>0.05;治疗后1周、治疗后2周,三组HSS评分比较有显著差异,P<0.05,组间比较,热敷联合艾灸组HSS评分均较热敷组、电磁波治疗仪组较高,热敷组、电磁波治疗仪组HSS评分比较无统计学意义,P>0.05。治疗后1周、2周,三组中医症候疗效比较无统计学差异,P>0.05,组间比较,热敷联合艾灸组中医症候有效率91.67%高于热敷组、电磁波治疗仪组,P<0.05,热敷组、电磁波治疗仪组比较无统计学差异,P>0.05。三组中医症候积分比较,P<0.05,热敷联合艾灸组患者膝关节疼痛、晨僵、转侧不利、腰膝酸软积分均明显低于热敷组、电磁波治疗仪组,P<0.05,热敷组、电磁波治疗仪组比较无统计学差异,P>0.05。结论:四子散热敷联合艾灸用于全膝关节置换术后患者,可缓解患者膝关节疼痛,改善膝关节功能,提高临床疗效,促进患者机体康复。展开更多
基金Project supported by the National Key Research and Development Program of China (Grant No.2022YFA1602502)the National Natural Science Foundation of China (Grant No.12127804)the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant Nos.XDB34000000)。
文摘The absolute partial and total cross sections for electron impact ionization of carbon monoxide are reported for electron energies from 350 eV to 8000 eV.The product ions(CO^(+),C^(+),O^(+),CO^(2+),C^(2+),and O^(2+))are measured by employing an ion imaging mass spectrometer and two ion-pair dissociation channels(C^(+)+O^(+)and C^(2+)+O^(+))are identified.The absolute cross sections for producing individual ions and their total,as well as for the ion-pair dissociation channels are obtained by normalizing the data of CO^(+)to that of Ar^(+)from CO-Ar mixture target with a fixed 1:1 ratio.The overall errors are evaluated by considering various kinds of uncertainties.A comprehensive comparison is made with the available data,which shows a good agreement with each other over the energy ranges that are overlapped.This work presents new cross-section data with electron energies above 1000 eV.
基金supported by the National Key Research and Development Program of China (Grant No.2022YFA 1602500)the National Natural Science Foundation of China (Grant Nos.11934004 and 12241410).
文摘The semiclassical non-perturbative atomic orbital close-coupling approach has been employed to study the electron capture and excitation processes in He^(2+)-H(1s)and He^(2+)-H(2s)collision systems.In order to ensure the accuracy of our calculated cross sections,a large number of high excited states and pseudostates are included in the expansion basis sets which are centered on the target and projectile,respectively.The total and partial charge transfer and excitation cross sections are obtained for a wide-energy domain ranging from 1 keV/amu to 200 keV/amu.The present calculations are also compared with the results from other theoretical methods.These cross section data are useful for the investigation of astrophysics and laboratory plasma.
文摘目的:探讨四子散热敷及艾灸对全膝关节置换术后疼痛及康复的效果。方法:收集2020年1月~2022年8月在本院进行全膝关节置换术患者的68例,采用随机数字表法分组,即热敷组(n=22)、热敷联合艾灸组(n=24)、电磁波治疗仪组(n=22)。统计三组患者治疗前后视觉模拟评分法(Visual Analogue Score,VAS)评分、美国特种外科医院膝关节评分(Hospital for special surgery,HSS)、中医症候疗效、中医症候积分。结果:治疗前、治疗后1 d,三组VAS评分比较无统计学意义,P>0.05;治疗后1周、治疗后2周,三组VAS评分比较有显著差异,P<0.05,组间比较,热敷联合艾灸组VAS评分均较热敷组、电磁波治疗仪组较低,热敷组、电磁波治疗仪组VAS评分比较无统计学差异,P>0.05。治疗前、治疗后1 d,三组HSS评分比较无统计学差异,P>0.05;治疗后1周、治疗后2周,三组HSS评分比较有显著差异,P<0.05,组间比较,热敷联合艾灸组HSS评分均较热敷组、电磁波治疗仪组较高,热敷组、电磁波治疗仪组HSS评分比较无统计学意义,P>0.05。治疗后1周、2周,三组中医症候疗效比较无统计学差异,P>0.05,组间比较,热敷联合艾灸组中医症候有效率91.67%高于热敷组、电磁波治疗仪组,P<0.05,热敷组、电磁波治疗仪组比较无统计学差异,P>0.05。三组中医症候积分比较,P<0.05,热敷联合艾灸组患者膝关节疼痛、晨僵、转侧不利、腰膝酸软积分均明显低于热敷组、电磁波治疗仪组,P<0.05,热敷组、电磁波治疗仪组比较无统计学差异,P>0.05。结论:四子散热敷联合艾灸用于全膝关节置换术后患者,可缓解患者膝关节疼痛,改善膝关节功能,提高临床疗效,促进患者机体康复。
