新的基因药物

首次合成的短链ＤＮＡ正被开发作为药物，这些化合物叫做反意义和三螺旋药物大概能够攻击病毒和癌细胞而不伤害健康的组织。     

论宗教仪式对体育竞赛本源的塑造

以人类学、发生学等相关理论为基础分析了宗教仪式和竞技体育起源的相互关系;进而探讨了宗教仪式对竞技体育的产生、发展中的功能性变迁。认为:宗教和体育均起源于人类的文化活动,宗教仪式对早期体育竞赛起到了主导和控制作用;体育竞赛的功能性与宗教的仪式性相互作用使现代体育竞赛中仍然保留了宗教仪式的符号特征;宗教仪式与体育竞赛仪式相互影响,其共同价值在于促进良好秩序的建立,其本质体现在对人的教育与文化规训,更体现于人类精神的寄托和人类积极进取的"神话"诉求。     

解析一些极易用错的词

收听广播、电视,打开报纸、杂志,经常可以听到、看到一些被错误应用了的词语。这些词语被反复地错用,使许多听众和读者对其正确的含义都慢慢生疏了,长期效仿错误使用,对广大受众特别是对青少年极易造成误导。     

Determination of muscle activity during running at reduced body weight

The aim of this study was to investigate how lower extremity muscles are influenced by body weight support during running at different speeds. Nine participants (age 24 ± 2 years, height 1.75 ± 0.12 m, mass 73.5 ± 15.7 kg) ran at 100%, 115%, and 125% of preferred speed at 100%, 90%, 80%, 70%, and 60% of body weight on a treadmill that provided body weight support. Preferred speed was self-selected by each participant and represented a speed that he or she could sustain if going for a 30 min run. Electromyography (EMG) data were recorded (1000 Hz, 1 min) from the bicep femoris, rectus femoris, tibialis anterior, and gastrocnemius for each condition together with knee angle (electrogoniometer). Average and root mean square EMG were calculated across 30 s. Muscle patterns were determined by smoothing (low-pass filter, 4 Hz) and extracting patterns for 49 cycles defined by consecutive maximum knee flexion angles. Repeated-measures analyses of variance were used to compare average and root mean square across body weight and speeds. Correlations were computed between the 100% speed/100% body weight condition and all other conditions per muscle. There was no interaction between body weight and speed (P > 0.05). Average and root mean square decreased as body weight decreased for all muscles (P < 0.05) and increased across speeds for all muscles (P < 0.05). Correlations for all muscles between conditions were high (range: 0.921-0.999). Although a percent reduction in body weight did not lead to the same reduction in muscle activity, it was clear that reducing body weight leads to a reduction in muscle activity with no changes in muscle activity patterns.     

第28届奥运会中国女篮与第5～8名球队的对比分析

为了有效提高中国女篮的成绩,本文对中国队与第5￣8名球队的3场比赛数据进行统计分析,结果得出:中国队队员的心理素质较差,在关键性比赛中不敢承担责任,不能够发挥出原有的水平;队员抢篮板球能力较弱,前场篮球不注重冲抢,后场不会卡位;教练员的临场指挥能力欠缺,不能根据场上的变化而及时地改变策略。并以此为据提出了一些建议。