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贾民 《淮南职业技术学院学报》2007,7(4):13-15
依据美术教学的内在规律,分析了学校美术基础教学的三个层面,提出了在美术教学中,必须不断改革教学方法,更新教学手段,使美术教学再上新水平,从而推进素质教育的全面实施。 相似文献
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贾亚飞 《辽宁科技学院学报》2003,5(1):35-36,49
分析了影响沥青路面平整度的各种因素，并针对存在的各种因素在施工中应注意的问题提出了相应的建议。 相似文献
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Kobayashi Y Takeuchi T Hosoi T Yoshizaki H Loeppky JA 《Research quarterly for exercise and sport》2005,76(4):450-455
The objective of this study was to determine the effect of a marathon run on serum lipid and lipoprotein concentrations and serum muscle enzyme activities and follow their recovery after the run. These blood concentrations were measured before, immediately after, and serially after a marathon run in 15 male recreational runners. The triglyceride level was significantly elevated postrace, then fell 30% below baseline 1 day after the run, and returned to baseline after 1 week. Total cholesterol responded less dramatically but with a similar pattern. High-density lipoprotein cholesterol remained significantly elevated and low-density lipoprotein cholesterol was transiently reduced for 3 days after the run. The total cholesterol/high-density cholesterol ratio was significantly lowered for 3 days. Serum lactate dehydrogenase activity significantly doubled postrace and then declined but remained elevated for 2 weeks. Serum creatine kinase activity peaked 24 hr after the run, with a 15-fold rise, and returned to baseline after 1 week. The rise of these enzymes reflects mechanically damaged muscle cells leaking contents into the interstitial fluid. It is concluded that a prolonged strenuous exercise bout in recreational runners, such as a marathon, produces beneficial changes in lipid blood profiles that are significant for only 3 days. However, muscle damage is also evident for 1 week or more from the dramatic and long-lasting effect on enzyme levels. Laboratory values for these runners were outside normal ranges for some days after the race. 相似文献
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综合各家迁移理论,应用广义相似原理在教材的选编、教法的选择和练习的设计等方面实现"为迁移而教"的 目的。展望未来,广义相似说在体育教学中的应用具有积极的意义。本文就广义相似说在教材的选编、教法的选择和练 习的设计中的应用作一尝试研究。 相似文献
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如何制订面向全体学生的课堂教学目标 总被引：3，自引：2，他引：1
体育课的教学目标应该是面向全体学生的,考虑到学生的个体差异,教学目标应该表现为:方向目标与达成目标的统一;学生目标与教师目标的统一;个体目标与群体目标的统一. 相似文献
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文章通过梳理相关历史文献并结合田野调查资料,描绘了新疆撒拉族的历史渊源和形成的历史过程;新疆撒拉族在迁徙的历史进程中,为了立足新的环境与周边民族文化进行了长期的互动、积极调适,社会文化发生了积极的变迁. 相似文献
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贾涛 《宁波职业技术学院学报》2011,(4):20-23
工学结合人才培养模式下的高职思想政治教育工作既有许多有利因素,又充满挑战。有利因素是：理论与实践相融,有利于增强教育效果;校企文化对接,有利于提高学生的职业素养;工学结合,有利于增强学生的社会适应能力。面临的挑战有：教育者、受教育者、教育环境、教育内容和方法等发生了变化。因此,要转变观念、更新内容、采取适当方法,以适应这种新型人才培养模式下的思想政治教育工作。 相似文献
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Free radical production increases during exercise and oxidative damage occurs in several tissues. We examined the effects of three different exercise tests on the pattern of change of erythrocyte enzyme antioxidant activities. The tests were a short maximal exercise test, a submaximal prolonged exercise test and a cycling stage during competition. The participants were amateur and professional cyclists with different training statuses and different basal erythrocyte antioxidant enzyme activities. The maximal test produced no changes in the erythrocyte antioxidant enzyme activities of amateur sportsmen. The submaximal test, performed at 80% of maximal oxygen uptake, decreased erythrocyte catalase (12%), glutathione peroxidase determined with H2O2 (14%) and glutathione reductase (16%); superoxide dismutase activity increased by about 25%. The cycling stage performed by professional cyclists increased erythrocyte catalase (29%) and glutathione reductase (10%) activities. The in vivo changes in glutathione reductase activity were confirmed by in vitro measurements: hydrogen peroxide decreased and the presence of catalase increased the activity of this enzyme. In conclusion, we suggest that the different erythrocyte antioxidant enzyme responses to diverse exercise tests can be explained by the effects of hydrogen peroxide and the superoxide anion on the antioxidant enzyme activities in erythrocytes. 相似文献
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