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961.
体育教学改革势在必行,各高校应根据本校的实际,结合高校体育的发展特点,改革以往落后的教学方法、教学内容、教学模式、组织形式等. 相似文献
962.
后发优势与后发劣势都是客观存在,但笼统谈论后发优势和后发劣势不合适。因为在技术领域和制度领域后发优势和后发劣势往往表现为不同的特征。文章在对相关概念进行明确界定的基础上,分别论述技术层面的后发优势与劣势以及制度层面的后发优势与后发劣势,并强调了制度的内生性对改革路径的影响。 相似文献
963.
《大学物理学》分层次教学的研究与实践——以丽水学院为例 总被引:3,自引:0,他引:3
分析了丽水学院《大学物理学》教学在教学目的、教学模式和手段、教材的选择、师资队伍的建设和实验教学等方面存在的问题,提出了具体的改革方案. 相似文献
964.
新课程理念下信息技术教学方法的探索 总被引:3,自引:0,他引:3
实施信息技术与课程整合,对于促进学生学习方式和教师教学方式的转变、培养学生的创新精神和实践能力具有重要的作用。在信息技术飞速发展的今天,创新与信息的获取、加工、分析、处理等信息素养是密不可分的。因此更新教学观念,培养学生信息素养成为信息技术课教学的目标和方向。 相似文献
965.
本文指出了目前利用率较高的物理化学教材、参考书对吉布斯自由能判据所给的各种限制条件的弊端。详细分析了W取各种值时,△G的对应情况,从而得出较合理的限制条件。 相似文献
966.
走中国特色社会主义道路是时代的要求,历史的必然,人民的选择,是科学社会主义基本原则同中国实际相结合的结晶.坚持和发展中国特色社会主义,要求我们毫不动摇地坚持党的基本路线,抓好党的自身建设,推进党的建设新的伟大工程. 相似文献
967.
Zhi-mei Tian Xian-yong Ma Xue-fen Yang Qiu-li Fan Yun-xia Xiong Yue-qin Qiu Li Wang Xiao-lu Wen Zong-yong Jiang 《Journal of Zhejiang University. Science. B》2016,17(10):742-751
To investigate dietary protein level effects on digestive mechanisms, weaned piglets were fed for 45 d with diets containing 20%, 17%, or 14% crude protein (CP) supplemented to meet requirements for essential amino acids. This article describes the influence of dietary protein on gastrointestinal hormones and expression of an array of digestive enzymes in the gastrointestinal tract and pancreas. Results indicated that there were no significant differences in expression of enzymes involved in carbohydrate digestion, except for maltase in the duodenum. In the jejunum, amylase expression in pigs fed 20% CP was much higher than that in pigs fed other diets (P<0.05) and maltase expression in those fed 17% CP was higher than that in other treatments (P<0.05). Although there were no remarkable differences in expression of aminopeptidase in the small intestine or carboxypeptidase in the pancreas (P>0.05), there was a trend towards higher expression of various proteases in pigs fed 17% CP. The duodenal expression of enteropeptidase in diets with 14% and 17% CP was significantly higher than that with 20% CP (P<0.05), but treatment differences did not existed in jejunum (P>0.05). The expression of GPR93 as a nutrient-responsive G protein-coupled receptor in 14% and 17% CP diets was significantly higher than that in 20% CP diet in the small intestine (P<0.05). The expressions of genes for pancreatic enzymes, lipase and elastase, were significantly higher in pigs fed diets with low CP, while similar trends occurred for carboxypeptidase, chymotrypsin and amylase. Conversely, the gastric expressions of pepsinogen A and progastricsin were lower with the 17% CP diet. Differences between treatments were found in the gastric antral contents of cholecystokinin and somatostatin: both increased in pigs fed 17% CP, accompanied by decreased content of motilin, which was also seen in plasma concentrations. These patterns were not reflected in duodenal contents. In general, 17% dietary CP was beneficial to the digestion of nutrient substance in the gastrointestinal tract. 相似文献
968.
英文歌曲在多媒体大班英语教学中的应用 总被引:1,自引:0,他引:1
马俊波 《沙洋师范高等专科学校学报》2005,6(4):82-84
本文在借鉴前人经验的基础上,联系教学实例介绍了英文歌曲在多媒体大班英语教学中的作用扣在多媒体大班英语教学中应用英文歌曲的选材原则、基本步骤及注意事项,以期对改善多媒体大班英语教学的效果有一定的参考作用。 相似文献
969.
970.
Basic fibroblast growth factor alleviates brain injury following global ischemia reperfusion in rabbits 总被引:9,自引:0,他引:9
Zhang M Ma YF Gan JX Jiang GY Xu SX Tao XL Hong A Li JK 《Journal of Zhejiang University. Science. B》2005,6(7):637-643
The aim of this study was to explore the protective effect of basic fibroblast growth factor (bFGF) on brain injury following global ischemia reperfusion and its mechanisms. Brain injury following global ischemia was induced by four vessels occlusion and systemic hypotension. Twenty-four rabbits were randomized into three groups: group A, only dissection of vessels; group B, intravenous infusion of normal saline after reperfusion for 6 h; group C, 30 μg/kg bFGF injected intravenously at the onset of reperfusion, then infused with 10 μg/(kg·h) for 6 h. Serum neuron specific enolase (NSE), S-100B, tumor necrosis factor-α(TNF-α), interleukin-1 (IL-1), interleukin-8 (IL-8) were measured before ischemia, 30 min after ischemia, 0.5, 1, 3, 6 h after reperfusion. Brain water content was determined and cerebral histopathological damages were compared. NSE and S-100B were increased 1 h after reperfusion and reached their peaks 6 h after reperfusion, but were much higher in group B than those in group C 3, 6 h after reperfusion. In groups B and C, TNF-a was increased after ischemia and IL-1 and IL-8 were increased significantly 0.5 h after reperfusion, then reached their peaks 6 h, 3 h, 6 h after reperfusion respectively. TNF-a and IL-8 at the time points of 1 h and 3 h and IL-1 at 3 h and 6 h in group C were correspondingly lower than those in group B. These indices in group A were nearly unchanged. There were less severe cerebral histopathological damages in group C compared with group B, but no difference in brain water content. It could be concluded that bFGF alleviates brain injury following global ischemia and reperfusion by down-regulating expression of inflammatory factors and inhibiting their activities. 相似文献