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O(^1D)+N2O→NO+NO反应的理论研究 被引量:5
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作者 刘玉芳 王永 +2 位作者 朱遵略 张现周 孙金锋 《原子与分子物理学报》 CAS CSCD 北大核心 2002年第1期19-23,共5页
应用三体模型及扩展的LEPS势能面 (PES) ,对初始条件为 (Ecol=5 5kJ/mol,v =0 ,j =0 )的O(1D) +N2 O→NO +NO反应体系进行了准经典轨线 (QCT)计算。根据计算结果对体系的势能面及反应机理进行详细的分析和讨论 。
关键词 三体模型 LEPS势能面 准经典轨线计算 周边化学反应 大气层 NO自由基 QCT计算 反应机理 一氧化氮自由基 动力学
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韩国在反导系统上的困境与战略选择 被引量:1
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作者 朴钟仁 李庆四 《东北亚学刊》 2015年第4期45-50,共6页
随着韩国国力上升、国际安全环境的变化,韩美同盟正面临新的挑战。美国在韩国部署THAAD系统的问题进一步激化了韩美的同盟困境。在最大经济伙伴中国和安全盟友美国之间做出什么样的战略选择,已成为韩国外交的棘手课题。韩国必须推动朝... 随着韩国国力上升、国际安全环境的变化,韩美同盟正面临新的挑战。美国在韩国部署THAAD系统的问题进一步激化了韩美的同盟困境。在最大经济伙伴中国和安全盟友美国之间做出什么样的战略选择,已成为韩国外交的棘手课题。韩国必须推动朝鲜半岛南北和解并与周边国家和盟友加强合作,多方位加强相互沟通,才能使自身安全摆脱尴尬。 展开更多
关键词 韩美同盟 反导系统 周边反应 韩国困境 战略选择
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Salsa dance and Zumba fitness: Acute responses during community-based classes 被引量:1
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作者 Pablo A.Domene Hannah J.Moira +1 位作者 Elizabeth Pummell Chris Easton 《Journal of Sport and Health Science》 SCIE 2016年第2期190-196,共7页
Background: Research interest in both partnered Latin dance and non-partnered Latin-themed aerobic dance has increased in recent years, likely a result of the gaining popularity of these types of instructor-led group... Background: Research interest in both partnered Latin dance and non-partnered Latin-themed aerobic dance has increased in recent years, likely a result of the gaining popularity of these types of instructor-led group classes among the mainstream dance and fitness audiences; however, the efficacy of these activities for the purposes of health promotion currently remains unclear. The purpose of this study was to simultaneously assess the physiological responses and psychological experiences during salsa dance and Zumba fitness in a community sample of physically inactive women. Methods: Twenty-four participants, aged 22-56 years, visited the laboratory to perform a graded exercise test for determination of maximal oxygen uptake and maximal heart rate. The participants then attended 2 partnered salsa dance and 2 non-partnered Zumba fitness classes each in a counterbalanced order over a 2-week period. The 1-h classes were taught by certified instructors in established venues in the Royal Borough of Kingston and the surrounding communities of London, UK. Physiological data were collected using a wrist-worn ActiGraph wGT3X+ acceler- ometer with accompanying heart rate monitor and were processed using previously validated dance-specific techniques. Psychological experiences were measured via the Subjective Exercise Experiences Scale. Results: There was a significantly higher (p 〈 0.001) total time spent in moderate-to-vigorous physical activity (51.2± 3.1 vs. 32.6 ±5.9 min), total energy expenditure (411±66 vs. 210 ± 46 kcal), and total step count (6773 ± 556 vs. 4108 ±781 steps) during Zumba fitness when compared to salsa dance. Significant pre- to post-class improvements in positive well-being (p 〈 0.01, partial 7/2 = 0.4l) and psychological distress (p 〈 0.001, partial 02 = 0.72) were simultaneously observed for both salsa dance and Zumba fitness. Conclusion: The acute responses to classes of partnered Latin dance and non-partnered Latin-themed aerobic dance suggest that in physically inactive women participation is indeed efficacious in terms of community-based physical activity and psychosocial health promotion. 展开更多
关键词 ACCELEROMETRY AEROBICS Cultural dance EXERCISE Physical acti ~ity
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