双重缺氧训练与5 km武装越野能力的关系研究

依据人体能量代谢的系统论观点，通过运用阻氧嘴进行双重缺氧训练的研究。阐述了缺氧训练与发展有氧耐力、无氧耐力及其它身体素质之间的关系、论证了双重缺氧训练法的科学性、高效性和经济性。丰富和发展了长跑训练理论，     

论心率在老年人体育锻炼中的运用

通过对老年人体育锻炼活动的情况进行相关调查，发现目前老年人在体育锻炼中存在一些锻炼误区，对此提出采用简单易行的心率方法来对老年人体育锻炼实施医务监督，提高老年人体育锻炼的科学性。     

Margaria台阶无氧功率实验研究进展

回顾了Margaria 无氧功率台阶实验方法的创建和早期发展历程。列举和分析了目前该实验方法在用力负荷、用力幅度、指标标定方法等方面存在的不足和问题。介绍了近年来为完善和改进该方法所进行诸项研究成果和进展，评价其学术价值和应用价值，指出了未来发展的前景。     

Effects of coffee and caffeine anhydrous on strength and sprint performance

Caffeine and coffee are widely used among active individuals to enhance performance. The purpose of the current study was to compare the effects of acute coffee (COF) and caffeine anhydrous (CAF) intake on strength and sprint performance. Fifty-four resistance-trained males completed strength testing, consisting of one-rep max (1RM) and repetitions to fatigue (RTF) at 80% of 1RM for leg press (LP) and bench press (BP). Participants then completed five, 10-second cycle ergometer sprints separated by one minute of rest. Peak power (PP) and total work (TW) were recorded for each sprint. At least 48 hours later, participants returned and ingested a beverage containing CAF (300?mg flat dose; yielding 3–5?mg/kg bodyweight), COF (8.9?g; 303?mg caffeine), or placebo (PLA; 3.8?g non-caloric flavouring) 30 minutes before testing. LP 1RM was improved more by COF than CAF (p?=?.04), but not PLA (p?=?.99). Significant interactions were not observed for BP 1RM, BP RTF, or LP RTF (p?>?.05). There were no sprint?×?treatment interactions for PP or TW (p?>?.05). 95% confidence intervals revealed a significant improvement in sprint 1 TW for CAF, but not COF or PLA. For PLA, significant reductions were observed in sprint 4 PP, sprint 2 TW, sprint 4 TW, and average TW; significant reductions were not observed with CAF or COF. Neither COF nor CAF improved strength outcomes more than PLA, while both groups attenuated sprint power reductions to a similar degree. Coffee and caffeine anhydrous may be considered suitable pre-exercise caffeine sources for high-intensity exercise.     

微型化学实验反应器设计

介绍了几种微型化学实验反应器的设计和使用方法，供同行参考。     

Flow Field of Circulating Fluidized Bed Reactor with Venturi Inlet Configuration

Different two-equation k-ε models were used to simulate the gas flow field generated by a new type of circulating fluidized bed reactor with venturi gas distributor. The numerical results were compared with the experimental data. It has been shown that the simulation results from the standard k-ε model have the best match with the experimental data. Based on this model, the gas flow field in the venturi diffuser and riser was analyzed by the concept of velocity nonuniformity and dead zone percentage. Both the nonuniformity of gas velocity and the dead zone percentage reach the maximum at the venturi outlet due to the effect of the vortex. At the same time, it provides a good platform for the further optimization of the inlet configuration of circulating fluidized bed reactor.     

跑节省化、无氧阈和最大摄氧量评价篮球运动员有氧能力的比较研究

以天津商务职业学院24名男篮球队员为研究对象,通过跑台测试、因子分析法等,采用跑节省化、无氧阈和最大摄氧量对篮球运动员进行评价分析。结果显示:篮球运动员跑节省化的修正值在第一公因子中载荷最大,在第二、第三公因子中跑节省化相关指标的载荷量处于相对重要位置,在第四公因子中只有跑节省化时通气量;跑节省化、无氧阈和最大摄氧量三指标在评价篮球运动员有氧耐力时,跑节省化指标优势明显。提示:跑节省化可以作为评价篮球运动员有氧耐力的首选指标。     

厌氧氨氧化菌活性的快速恢复及运行

为研究厌氧氨氧化(anaerobic ammonium oxidizing,ANAMMOX)菌的活性恢复,采用SBR工艺对长时间(100 d左右)停止运行的反应器中ANAMMOX菌进行活性培养。经过22 d的恢复试验,ANAMMOX菌活性基本恢复,在第17天,NH+4—N和NO-2—N的转化率均在90%以上,TN的去除率在80%以上。在培养过程中,载体的颜色由白色逐渐变成淡黄色。结果表明,在常温闲置较长时间的反应器中ANAMMOX菌的活性可恢复性强,恢复周期短,恢复后的脱氮性能良好;ANAMMOX反应器通过对生物膜载体的培养可以使ANAMMOX菌的活性快速恢复。     

初探武术长拳类项目少儿运动员赛前准备活动模式

本文在理论分析、资料归纳的基础上, 通过实验方法对武术长拳类项目少儿运动员赛前准备活动模式进行了研究, 研究结果表明, 长拳类项目的赛前准备活动的监控指标为: 时间持续30 m in,体温应升高1.5℃,心率区间应在130～195 次/m in,其平均心率应为HR= 150～160次/m in, 并结合实践结果及实验经验, 制定出了武术长拳类项目少儿运动员赛前准备活动的内容、量、强度的模式。     

青少年习武健身的生理生化学研究

对２６名习武青少年进行了６０ｓ奋力蹬车测定和自选拳术演练强度测定。结果表明,自选拳术演练主要以无氧酵解供能;６０ｓ奋力蹬车与自选拳术演练相比,可获得更大血乳酸值,其功率变化可作为提高无氧耐力的辅助训练方法与评价标准。