从"老大学"到"老中学"……(雁斋读书漫笔之一)

从启蒙到小学,再到中学而后大学,是人生道路上至关重要的阶段.本文通过分析《过去的中学--人生最关键阶段的教育和学习》《胡适选专业:大师们的大学生活》二书,回顾了施雅风、张维、钱穆、张思之、钱学森等成名人物自由学习,各具人文风采的中学生活,以及胡适、蒋梦麟等大师在大学里随意选择和调换科系的自由选学做法,意欲给现在的中学教育活动提供一点启迪意义,指出在高等教育制度上,学生如何选择科系,在中国的现当代是有着严重断裂的.     

近十年我国免费电子资源文献研究综述

论文以1997年以来国内关于免费电子资源研究的文献为研究对象，对其年代分布、期刊分布、作者分布等进行了简单分析，重点对其研究内容进行了详细分析，并阐述了各研究模块的主要观点，指出了相关研究中存在的一些问题与不足。对整体研究进行了客观的评价分析。     

论摔跤抱腿技术的特点及其运用

抱腿技术是自由式摔跤运动中的一种主要技术。本文根据实践经验论述了摔跤抱腿技术的特点及其在实战中的运用。     

芦丁和维生素C对大鼠力竭运动后自由基代谢的影响

观察了芦丁和维生素 C对大鼠力竭运动后脂质过氧化水平 (L PO) ,超氧化物歧化酶 (SOD)和谷胱甘肽过氧化物酶 (GSH— Px)活性的影响。结果显示 :芦丁和维生素 C可降低大鼠力竭运动后脂质过氧化水平 ,提高大鼠力竭运动后超氧化物歧化酶和谷胱甘肽过氧化物酶的活性。此结果说明 :芦丁和维生素 C可减少力竭运动后因脂质过氧化而产生的自由基 ,提高机体抵抗运动性疲劳的能力 ,并对防止运动损伤也有一定的作用。     

原花青素对大鼠力竭运动后不同时相肾脏自由基代谢的影响

目的:探讨原花青素对大鼠力竭运动造成的肾损伤的保护作用.方法:通过建立一次性力竭游泳运动的模型,检测对照组、给药组运动后即刻、运动后 2h、运动后 6h肾组织中SOD、T—AOC活性、MDA含量,运动力竭时间;分析比较给药组和对照组肾脏各指标变化以及运动后的恢复情况.结果:(1)给药组游泳的时间延长,显著高于对照组.(2)2组运动后即刻SOD活性显著升高.给药组运动后2h和运动后6h显著高于对照组.(3)2组运动后即刻MDA有所增加,运动后2h达到最高,给药组各时相升高幅度均低于对照组,其中运动后2h和6h具有显著性差异.(4)运动给药组能长时间将T-AOC维持在较高水平.结论:(1)原花青素可以延缓运动疲劳的出现,提高大鼠游泳运动的能力.(2)原花青素能提高肾脏的抗氧化能力,对肾脏有一定的保护作用.     

Evaluation of Oxidative Stress and hsCRP in Polycystic Ovarian Syndrome in a Tertiary Care Hospital

PCOS is a heterogeneous endocrine disorder with diverse clinical presentation. Oxidative stress plays a key role in the pathophysiology of this disease. Serumhigh sensitive C-reactive protein (hsCRP), a marker of chronic low grade inflammation, is indicative of future development of cardiovascular disease. Our aim is to evaluate the oxidant status and hsCRP levels in PCOS. The study involved 61 cases and 61 controls in the age group of 18–40 years diagnosed with PCOS. Erythrocyte malondialdehyde (MDA), superoxide dismutase (SOD), serum hsCRP, gonadotrophins, thyroid stimulating hormone, prolactin, glycemic status and lipid profile were estimated. Erythrocyte MDA (p < 0.001), SOD (p = 0.007) and serum hsCRP (p < 0.001) were significantly elevated in PCOS patients than controls. Oxidative stress is present in women with PCOS along with elevated hsCRP.     

Filling the Information Gap: Radio Free Europe–Radio Liberty and the Politics of Accreditation at the 1984 Los Angeles Olympic Games

Due to the decision of the Soviet Union and nearly all of its East European satellites to withdraw from the 1984 Los Angeles Summer Games, the communist media provided audiences in the Soviet bloc with few reports on the sporting events in the Olympic city. When Radio Free Europe and Radio Liberty, broadcasters funded by the US government, attempted to fill this ‘information gap’ by beaming coverage of the Los Angeles Games behind the Iron Curtain, the Soviet Union protested to the International Olympic Committee. They claimed, with a mixture of fact and fiction, that the Radios were tools of the American intelligence establishment and accused them of broadcasting ‘subversive’ propaganda to Eastern Europe and the USSR. Stirred into action by this Soviet manoeuvre, leading spokesmen for the Radios were joined by government officials, private citizens, US Olympic Committee members and the American media in a concerted attempt not only to defend the work of the broadcasters, but also to secure their press accreditation for Los Angeles.     

基于变论域模糊PID的温度控制

针对弹丸应变实验系统温度8控制过程中具有非线性、大时滞及温度难以精确控制等问题,引入变论域思想,利用变论域思想的伸缩因子改变控制系统模糊规则的论域,结合PID控制和模糊PID控制的优点,从而形成变论域模糊PID自适应温度控制系统,设计了变论域模糊PID的温度控制方法。利用MATLAB仿真结果标明:与模糊PID算法比较,变论域模糊PID温度控制算法在超调量、鲁棒性和动态响应速度方面均具有明显优势。     

东盟自由贸易区下的汽车出口现状研究

文章从环境、市场、政策、传统等因素对东盟自由贸易区下的汽车出口现状进行分析,提出了解决这些问题的一些建议和对策。