Convenient surface functionalization of whole-Teflon chips with polydopamine coating

This paper presents a convenient strategy to modify the surface of whole-Teflon microfluidic chips by coating the channel walls with a thin layer of polydopamine (PDA) film, which is formed by oxidation-induced self-polymerization of dopamine in alkaline solution. Two coating strategies, static incubation and dynamic flow, are demonstrated and used for tuning the physical and chemical properties of the coated channel walls. The functionalized surfaces were investigated with the contact angle, X-ray photoelectron spectroscopy, and atomic force microscopy measurements. The coating time was optimized according to the fluorescent intensity of the green fluorescent protein immobilized on the modified surface. Applications of the PDA-modified Teflon microchips in bioanalysis were demonstrated with a typical sandwich immunoassay. Moreover, long-term cell culture experiments on modified and native Teflon chips revealed that the chip biocompatibility can be greatly improved with PDA coating. The results indicate that the surface properties of the Teflon can be easily controlled by the PDA modification, thus greatly expanding the application scope of whole-Teflon chips for various chemical and biological research fields.     

Perform kicking with or without jumping: joint coordination and kinetic differences between Taekwondo back kicks and jumping back kicks

We investigated joint coordination differences between Taekwondo back kicks and jumping back kicks, and how jumping (in performing the latter) would alter engaging ground reaction forces (GRF) in executing kicking. Ten skilful athletes volunteered to perform both kinds of kicking within the shortest time for three successful trials. Three high-speed cameras and two force platforms were used for data collection, and the trial with the shortest execution time was selected for analysis. Movements were divided into the rotation and attack phases. With comparable execution time and maximum joint linear/angular speeds, back kicks and jumping back kicks differ mainly in larger GRF in the latter, and in greater target acceleration in the former probably because the support leg prevented athletes’ rebounding after impact. In addition, more prominent antiphase and in-phase coordination between the shoulder segment and knee joint, and elongated rotation phase were found in jumping back kicks. Larger GRF values in jumping back kicks were generated for jump take-off rather than for a more powerful attack. In back kicks although the support leg remained ground contact, greatly decreased GRF in the attack phase suggested that the support leg mainly served as a rotation axis.     

Globalization and the Governance of Chinese Sports: The Case of Professional Basketball

This paper aims to explore the manifestations of globalization and sport governance in China through a lens of basketball. Specific focus is centred on the extent of the universalization of the National Basketball Association's (NBA) governance model in China and the adaptation from Chinese basketball. It argues that the vertical-centralized power allocation of Chinese basketball has prevented the NBA's governance model being fully assimilated and universalized in the Chinese context. When the localization of the NBA's capitalist setting encounters the state power of China's socialist regime, Chinese political nationalism has tended to provoke a firm entrenchment to protect the government's sovereignty.     

我国申办冬奥会志愿服务的前瞻性思考

通过对我国申办冬奥会、冬奥会志愿服务和冬季体育志愿服务之间的关系进行深入分析,阐述了申办冬奥会志愿服务具有的社会价值、文化价值、教育价值和经济价值,对在申办冬奥会过程中完善冬季体育志愿服务体系,做出培育冬季体育志愿者的社会资本,形成冬季体育志愿服务的持久化、常态化,建设专业化、制度化的冬季体育志愿服务队伍等一系列前瞻性思考,以期推动冬季体育运动在我国有一个新的更大的发展,成功申办和举办冬奥会.     

山西省高职院校公共体育课中简化24式太极拳教法研究现状与分析

文章运用问卷调查法、专家访谈法、文献资料法等研究方法,对太极拳教师的基本情况、专业进修途径、常用的教学方法、教学方法选用的时机等相关问题进行探讨和研究,以期为普通高职院校教师太极拳教学提供借鉴,从而促进学生更快的掌握技能,培养对太极拳进而对武术浓厚的兴趣,弘扬我国的优秀传统文化。     

中老年晨练人群主观幸福感的调查研究--以上海市杨浦区为例

文章通过调查中老年晨练人群的主观幸福感情况,旨在为中老年晨练活动及相关部门提供一定的参考依据;主要采用问卷调查法,问卷包括晨练的基本情况和主观幸福感两部分。研究结果：晨练者中以60-74岁的老年人居多;项目以武术类居多;59.0%的选择集体练习;89.2%的几乎天天锻炼、87.0%的晨练超过1小时;55.4.%的无人指导;71.08%的总体感受为非常满意。晨练者的幸福感水平几乎处于“幸福”级别,男性略高于女性;武术类晨练者幸福感略高;以彰显才能、集体晨练、天天锻炼等为主要晨练特征的其主观幸福感较高。建议：政府部门提供更有力的保障;成立健康服务队,提供持续的健康服务;场馆管理制度更加“以人为本”;社会媒体舆论充分关注;晨练者完善自身各方面。     

试论我国鄂伦春族传统体育课程资源的开发与利用

文章运用文献资料法、实地考察法、逻辑分析法等研究方法,在深入领会三级课程管理体制政策要求的基础上,对其校本课程资源开发的目标、原则、实施策略进行分析与讨论,旨在为我国处于劣势地位的民族传统体育进一步提高自主创新能力,挖掘出鄂伦春族传统体育内在的教育功能,研究认为：鄂伦春族传统体育资源成为校本课程开发的对象是时代的选择,其注定要完成向现代化的转型,必须走有中国特色的社会主义体教兴族道路,坚持以创新驱动发展的战略,努力打造传统体育文化的升级版。     

场地拓展训练在高校公共体育教学中实施的可行性研究

文章首先通过问卷调查法来了解教师及学生对拓展训练的认知情况,然后通过教学实验法对74名大学生进行为期16周的场地拓展训练课程教学,以验证场地拓展训练在高校公共体育教学中实施的可行性。     

中国社会培训教育发展现状与策略

本文主要从中国社会培训教育行业特点及问题分析中国社会培训教育发展现状,并根据社会培训教育发展中存在的问题提出发展策略。中国社会培训教育发展速度迅猛、行业规模大,社会培训教育行业呈现学校与非学校并重、自主性与社会性、国外培训和国内培训共存特点。在社会培训教育行业蓬勃发展时期,行业发展的内部联系不足、教育培训不符合时代要求、培训教育的目标发生偏差、品牌发展不足等问题也越来越严重。因而要从加强培训教育行业内部联系、提高社会培训教育行业的规范性,形成优质品牌、加强国内外交流合作三个方面着手,促进中国社会培训教育健康发展。     

现代科技下的晚会革命——浅谈LED投影在晚会中的作用

LED是将电能转化为光能的高科技产品,大部分用于照明。由于它体积小、质量轻,被引入到电视晚会中后,提升了晚会的创意和效果,增加了晚会的信息传播数量与质量,对于舞台布景起到了美化作用。LED屏幕内容在很大程度上调动了现场观众气氛,开拓了晚会空间,进一步实现了与观众的互动。这些都离不开现代科技的支持,在今后的发展中,技术与艺术相结合将是晚会的主流。