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141.
在查阅大量文献资料的基础上,对中医药和微量元素在消除运动性疲劳中的应用、作用原理和机理进行了综述和展望,着重从微量元素的角度对中医药消除运动疲劳的生化基础进行了分析和探讨。 相似文献
142.
设计了一系列珠光调理洗发香波配方,并测定了各配方的pH值、泡沫高度、有效物及重金属含量,结合各项指标获得了最佳配方。 相似文献
143.
In this paper we provide new evidence on the causal effect of education on adult depression and cognition. We use SHARE data and schooling reforms in several European countries as instruments for educational attainment. We find that an extra year of education has a large and significant protective effect on mental health; the probability of suffering depression decreases by 6.5 percentage points. We find a large and significant protective effect on cognition as measured by word recall. We also explore whether heterogeneity and selection play a part in the large discrepancy between OLS and IV (LATE) estimates of the effect of education on depression and cognition. Using the data available in SHARELIFE on early life conditions of the respondents such as the individuals’ socioeconomic status, health, and performance at school, we identify subgroups particularly affected by the reforms and with high marginal health returns to education. 相似文献
144.
变电站PT承担着电压监测和保护采样的双重任务,其重要性不言而喻,但实际运行中,PT往往会因各种原因而发生谐振并造成大范围停电。本文从PT谐振所造成的危害出发,重点论述了引发PT谐振的原因,并对相关处理对策进行了探讨,以期为更好提升变电运行水平而抛砖引玉。 相似文献
145.
Anitha Devanath Somdattaa Ray Ravi Kumar B. S. Prarthana 《Indian journal of clinical biochemistry : IJCB》2014,29(1):45-50
HIV infection is associated with lipid abnormalities in treatment naïve patients. CD4 count is used for monitoring the HIV infection. Primary objective was to evaluate and correlate lipid profile and CD4 counts in HIV infection. Secondary objective was to evaluate the feasibility of using Lipid profile to monitor the HIV infected treatment naïve patients instead of CD4 counts. 112 patients were selected based on a criteria from ART center in tertiary care center. CD4 counts were assessed and Lipid profile was evaluated enzymatically. A correlation study was done between the lipid profile and the CD4 count and clinical stages of infection. Cholesterol showed no significant correlation in any stage. HDL-C showed significant correlation (p < 0.05) with stage 2 and 4 disease. LDL-C showed no significant correlation in any stage. TGL showed significant correlation (p < 0.05) at stage 4 disease. Hence, HDL-C and TGL can be used as indicators of lipid status and for infection progression in treatment naive HIV patients, while Cholesterol and LDL-C has no role to play. 相似文献
146.
《Journal of research on educational effectiveness》2013,6(1):88-110
Abstract As an example of how the effectiveness of well-designed laboratory interventions is often diffused in the field, we examined the effects of a motivation intervention on students' perceptions and learning. The intervention proved to be more effective in the laboratory (g = 0.45) than the field (g = 0.05) in enhancing subsequent motivation. We explored this reduction in treatment effectiveness through a fidelity analysis that examined the extent to which participants responded to the treatment. We calculated fidelity as three indices of achieved relative treatment strength (Cordray & Pion, 2006), and found that, regardless of how fidelity was calculated, achieved relative strength was about 1 standard deviation less in the classroom than the laboratory. In addition, greater levels of achieved relative strength were associated with greater differences in the motivational outcome—indicating that intervention was more effective for participants who actually received the treatment than those who did not. Multilevel analyses indicated that the drop in classroom treatment fidelity was partially because of teacher, rather than student, factors. Implications for theoretical models of change and research are discussed. 相似文献
147.
随着变电站自动化程度越来越高,远动通讯发挥着越来越重要的作用,主站的高级应用功能也越来越多,需要变电站的装置准确无误的上送遥信、遥测信息,否则将影响系统的稳定运行。本文详细介绍了一起110kV变电站与中调通讯异常、误发信号的故障,细致分析了故障产生的原因,是由于远动机、保护装置通讯程序及交换机电源异常导致的,并提出了防止类似故障发生的有效措施。现场工作人员在实际工作中采取本文建议的措施,排除了该故障并且没再发生过类似的情况,有效地降低了远动故障发生率,保障了电力远动系统的正常运行,同时提出了远动通讯应该遵循的原则,对提高变电站通讯的可靠性具有重要意义。 相似文献
148.
儿童肥胖干预方法的现状与分析 总被引:4,自引:2,他引:2
魏莹 《首都体育学院学报》2004,16(1):103-106
本文介绍了国内外儿童单纯性肥胖症干预方法的研究进展。目前主要的干预方法包括:膳食干预、运动干预、行为治疗和心理干预等。以家庭为基础,辅以运动训练、饮食控制、行为治疗和心理干预的综合治疗方法是国内外公认的适合于儿童肥胖症的治疗手段。 相似文献
149.
运动员胫骨疲劳性骨膜炎及疲劳性骨折的病理分析与防治 总被引:2,自引:0,他引:2
施娅萍 《武汉体育学院学报》1998,(4)
运动员胫骨疲劳性骨膜炎及疲劳性骨折,是运动训练中的常见和多发病。本文对此病症的特点、病因、病理进行理论分析,并提出了有效的治疗方法。 相似文献
150.
Ni36CrTiAl弹性合金是一种重要的弹性仪器仪表材料,具有耐高温、耐腐蚀、高弹性等一系列优异性能,美中不足的是它的强度不够,硬度较低。对该合金进行不同热处理工艺的研究,改进热处理工艺参数,得到比较满意的强化效果。 相似文献