纳米碳管在生物医学工程领域中的应用

纳米碳管是近几年发现的新兴材料 ,它有着奇异的电学、磁学、力学性质 ,在生物医学工程领域中有着广泛的应用前景。文章通过对近几年纳米碳管在生物医学工程领域中应用研究的归纳和分析 ,进一步探讨了纳米碳管在生物医学传感器、生物医学微电子器件以及生物医学人工材料领域应用的可行性     

污泥比阻实验设备的改造

介绍了改造的污泥比阻实验设备的组成结构,对该设备的改造目的及主要原理进行了阐述,通过实验结果表明,经过改造重新制作的污泥比阻实验设备具有启动容易、使用操作方便的特点,完全能满足水处理实验技术的要求.     

开发性水电电气设备展望

概述了水轮发电机、高压开关电器、高压电缆中、低压开关电器２０世纪末发展的新动向; 从带有更新或革命性的角度, 阐述了开发性水电电气设备２１世纪的展望; 指出电气设备作为一种产品, 在新技术、新材料、新工艺、新思维的研究基础上, 正朝着设计标准化, 结构模块化, 生产专业化, 功用智能化的方向迈进。     

国际艺术体操评分规则的演变特征

运用文献资料调研、比较研究和数理统计法对1976-2009年以来由FIG正式出版的9个版本国际艺术体操评分规则进行分析,旨在找出规则发展变化的动向,为我国艺术体操训练提供一定的理论依据.研究结果表明:1)难度的发展和创新仍然是艺术体操运动发展的主题,在进行难度动作的创新中要以"既要有难度,又要尽量确保运动员的身体健康不受到伤害"为原则;2)"规格就是美",对于艺术体操运动来说,成套动作高质量、高规格的完成是艺术体操运动持续、稳步发展的生命线;3)编排的艺术性是获取优异成绩的重要因素;4)器械技术动作的发展受到高度重视;5)规则在演变过程中较好地处理了艺术体操运动的"竞技化"与"人性化"间的关系,促使艺术体操运动稳健向前发展.     

Reliability and Validity of Finger Strength and Endurance Measurements in Rock Climbing

Purpose: An advanced system for the assessment of climbing-specific performance was developed and used to: (a) investigate the effect of arm fixation (AF) on construct validity evidence and reliability of climbing-specific finger-strength measurement; (b) assess reliability of finger-strength and endurance measurements; and (c) evaluate the relationship between finger flexor all-out test scores and climbing ability. Methods: To determine the effect of AF, 22 male climbers performed 2 maximal strength and all-out tests with AF (shoulder and elbow flexed at 90°) and without AF (shoulder flexed at 180° and elbow fully extended). To determine reliability, 9 male climbers completed 2 maximal strength tests with and without AF and an all-out and intermittent test without AF. Results: The maximal strength test without AF more strongly determined climbing ability than the test with AF (r² = .48 and r² = .42 for sport climbing; r² = .66 and r² = .42 for bouldering, respectively). Force and time variables were highly reliable; the rate of force development and fatigue index had moderate and low reliability. The maximal strength test with AF provided slightly higher reliability than without AF (intraclass correlation coefficient [ICC] = 0.94, ICC = 0.88, respectively). However, smaller maximal forces were achieved during AF (484 ± 112 N) than without AF (546 ± 132 N). All-out test average force had sufficiently high reliability (ICC = 0.92) and a relationship to sport climbing (r² = .42) and bouldering ability (r² = .58). Conclusion: Finger strength and endurance measurements provided sufficient construct validity evidence and high reliability for time and force parameters. Arm fixation provides more reliable results; however, the position without AF is recommended as it is more related to climbing ability.     

用现代液压技术推动水轮机调节装置的升级换代

概括了现代液压技术的基本特点及其在水轮机调节装置中的应用状况；介绍了应用该技术研制的GYT系列高油压调速器的进展及其特点；总结了研制中形成的若干技术观点；提出了用该技术开发、推广新一代高油压水轮机调节装置的任务。     

晕动症的发生、预防及体育疗法研究

晕动症主要是人体内耳平衡器官--前庭器官过分敏感引起植物神经系统功能紊乱所致.前庭功能稳定性的高低直接影响到人们的工作与生活,特别对某些体育运动项目的作用尤为重要.本文从神经生理角度阐述晕动症的发生机制、致病原因并提出了预防措施及体育锻练疗法,以期改善和提高前庭功能的稳定性,为预防和减少晕动症的发生提供一些参考.     

灌浆料加速腐蚀仪的研制与应用

参照钢筋阳极极化作用原理和加速腐蚀实验方法，研制了具有6套能同时独立工作的腐蚀装置的灌浆料加速腐蚀仪。试验方法是在恒电位条件下测定腐蚀电流急剧变化时所经历的时间，并由此反映灌浆料在极端苛刻的腐蚀条件下抵御氯离子侵蚀的能力。应用该仪器对预应力混凝土灌浆料的优选进行了系统试验，取得了良好的效果。结果表明该加速腐蚀仪具有良好的可靠性和精度，可用于灌浆料的抗氯离子侵蚀性能的试验研究。     

What History Can Teach Us About Science: Theory and Experiment, Data and Evidence

Scientists often use more than the results of experiment to arrive at a result; they use anticipation and analogy to arrive at the results that fit their theories, and sometimes they correct results in the light of analogy. They also need to be clear about the difference between accuracy and precision. They do all this using not only theories, but also apparatus, and the interplay between apparatus and the development of concepts and theories is often crucial. Historians of chemistry (notably including the recent work of Usselman, Rocke, and Holmes) furnish us with plenty of examples of such interplay, and of the selection of data in the light of theory. Lavoisier, Dalton, and Liebig can each teach us a good deal about the way that good scientists arrive at reproducible results.     

微型滴定分析化学实验探索

通过对常规分析化学实验仪器进行微型化研制,用自制的微型滴定装置,对分析化学实验进行了一系列微型化滴定实验探索,结果表明:当试剂用量降低到原用量的1/5~1/10时,仍能得到符合常规分析的准确度和精密度要求,从而节约了实验试剂、实验经费和时间,提高了学生的操作能力,同时大大减轻试剂对环境的污染。