国家皮划艇运动员高原训练的机能监测和评价研究

为了探索皮划艇运动员的高原训练，对国家皮划艇集训队1999年的两次高原训练，进行了全程跟踪监测，以期对皮划艇运动员的高原训练进行评价。监测结果表明：(1)皮划艇运动员上高原后7至10d可完全适应高原环境训练，高原训练要考虑适应的时间和转换运动训练负荷强度的时机。(2)高原训练的负荷应安排在高原训练期间出现两次血红蛋白的高峰。血红蛋白的动态变化对于监控和保证高原训练负荷的量和强度是一个有益的指标。下山后14d和40d血红蛋白有两个明显的高峰，揭示可能有两次运动能力的高潮点。(3)高原训练后完成500m和1000m血乳酸的浓度显性增加，揭示运动员耐酸能力提高，500m和1000m成绩有显性提高。     

中老年体育教师血压状况追踪观察

从医学角度对青少年时期从事大运动量训练的中老年体育教师进行血压状况追踪观察，并与同龄学科教师进行对照。结果表明：观察组血压明显高于对照组；观察组血压随年龄的增长而增高，高血压总病率在60岁前增长幅度最大；通过比较1989年、1994年、1999年和2001年追踪观察结果，观察组的血压以1989年—1994年的变化幅度最大。结论：中老年体育教师是患高血压痛的高危人群、必须提前进行干预。加强运动员退役后的医务监督，综合防治，减少疾病的发生。     

对高水平散手运动员赛前训练部分生化指标的监测分析

通过文献资料法、实验法、数理统计法和系统方法,对湖北省参加2004年全国散打锦标赛的高水平运动员在赛前训练的部分生化指标进行了监测。结论表明:通过对赛前血色素、血尿素、血清肌酸激酶变化的观察,其能反映高水平运动员对赛前运动负荷的适应情况以及身体机能的状况。安静时血乳酸值对周训练后运动员机能水平变化的反映不灵敏,运动后血乳酸值可反映赛前训练对抗强度及运动员的无氧能力。     

基于领域本体对专利情报知识挖掘的浅析

专利作为企业间竞争博弈的重要信息源,通过对其进行深挖掘可以把握竞争对手的技术发展战略以及未来的产品布局,同时还可借助既有专利信息进行产品发明及再创新,故对专利情报进行有效组织和管理,实现隐性知识发现是当今热点问题.通过以实际工作中血管支架专利分析为例,结合对专利情报本身结构的分析,并引入本体理论,同时借助TRIZ和推理机制等概念,初步探讨基于领域本体的专利情报知识挖掘,拟研究一种可以面向专利用户实现智能化情报挖掘体系,从而有效支持专利知识的共享与重用.     

浅析高职公共英语教师的职业发展

近年来,为了适应新形势的需要,各大高职院校都在进行教学改革。公共英语的教学改革也是大势所趋。公共英语教师面临着巨大的压力和挑战,必须迅速更新教育理念,充分发挥自己的主动性和积极性,主动思考和创新,不断充实完善自我来实现自身的职业发展。     

Wearable skin-like optoelectronic systems with suppression of motion artifacts for cuff-less continuous blood pressure monitor

According to the statistics of the World Health Organization, an estimated 17.9 million people die from cardiovascular diseases each year, representing 31% of all global deaths. Continuous non-invasive arterial pressure (CNAP) is essential for the management of cardiovascular diseases. However, it is difficult to achieve long-term CNAP monitoring with the daily use of current devices due to irritation of the skin as well as the lack of motion artifacts suppression. Here, we report a high-performance skin-like optoelectronic system integrated with ultra-thin flexible circuits to monitor CNAP. We introduce a theoretical model via the virtual work principle for predicting the precise blood pressure and suppressing motion artifacts, and propose optical difference in the frequency domain for stable optical measurements in terms of skin-like devices. We compare the results with the blood pressure acquired by invasive (intra-arterial) blood pressure monitoring for >1500 min in total on 44 subjects in an intensive care unit. The maximum absolute errors of diastolic and systolic blood pressure were ±7/±10 mm Hg, respectively, in immobilized, and ±10/±14 mm Hg, respectively, in walking scenarios. These strategies provide advanced blood pressure monitoring techniques, which would directly address an unmet clinical need or daily use for a highly vulnerable population.     

高校青年教师心理压力成因与对策

高校青年教师所处的特殊位置、环境和所担当的特殊角色、使命,使其在社会变革和转型过程中承受着多方面的心理压力,需要社会、学校、家庭和教师本人共同努力,采取切实措施进行有效疏导、调适和应对。     

Reliability of arterial spin labelling measurements of perfusion within the quadriceps during steady-state exercise

Arterial spin labelling (ASL) provides a potential method to non-invasively determine muscle blood flow and examine the impact of interventions such as supplementation and training. However, it's a method with intrinsically low signal, leading to limitations in accuracy and temporal resolution. To examine these limitations, the current study measured perfusion via ASL on three occasions in the rectus femoris of 10 healthy adults, during light and moderate exercise, over three different exercise durations. For data sampled over 9 min, light intensity exercise gave an average perfusion of 35.0 ± 5.1 ml/min.100g^?1 with a coefficient of variation (COV) of 16% and single intraclass correlation coefficient (ICC) of 0.67. For the moderate bout, perfusion was 51.3 ± 5.6 ml/min.100g^?1 (COV 10%, ICC 0.82). When the same data were analyzed over 5 min 24 s, perfusion was 37.8 ± 11.13 (COV 30%, ICC 0.13) during light and 49.5 ± 8.8 ml/min.100g^?1 (COV 18%, ICC 0.52) during moderate exercise. When sampling was reduced to 1 min 48 s, perfusion was 41.2 ± 13.7 (COV 33%, ICC 0.26) during light and 49.5 ± 13.6 ml/min.100g^?1 (COV 28%, ICC 0.04) during moderate exercise. For 9 min a significant perfusion difference was found between the exercise intensities; however, this was not the case for sampling over 5 min 24 s or 1 min 48 s. Such findings illustrate the potential of ASL to non-invasively monitor muscle perfusion under steady-state conditions, but highlight that extended exercise protocols are necessary in order to generate date of sufficient reliability to be able to discriminate intervention dependent perfusion differences.     

浅圆仓侧压力分析

Rankine理论和Coulomb理论均不适合用于浅圆仓的侧压力计算. 基于此, 本文研究了浅圆仓散料侧压力的实际分布规律及计算方法. 根据极限平衡理论, 首先得到散粒体作用在单位周长的仓壁上的合压力, 然后通过严格的数学推导, 得到浅圆仓侧压力的分布规律. 结果表明, 本文结果与实仓试验结果相符, 说明本文公式不论对平堆还是锥堆都比较适合, 而Rankine理论和Coulomb理论用于浅圆仓均有缺陷.     

吸血蛭与非吸血蛭间的氨基酸比较研究

为探究传统中药水蛭的药用成分，更好地开发利用蛭类资源，本文通过高效氨基酸分析仪，分析了云南四种蛭类的氨基酸组成．结果表明吸血蛭与非吸血蛭在氨基酸组成上有明显差异．结合以往实验，分析了非吸血蛭活血化瘀的可能药用成分，为合理开发利用蛭类资源提供了资料和建议．