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钱和生 《作文成功之路(高中版)》2013,(1):83
文章从当前中职应用文教学误区入手,提出中职开展学生应用文写作训练有利于提高学生综合素质和语文能力,并列举了讲究层次,激发兴趣;营造氛围,引发需要;改革教法,提升效率;强化训练,提高水平;培养思维,奠定基础五种教学方法。 相似文献
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在坚持以学生为主体的现代教学理念下，我们许多语文教师怕担上“满堂灌”“一苦堂”的“罪名”，为让学生的主体地位得到“落实”，宁可省略许多应讲授的内容。 相似文献
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中等职业学校语文综合实践活动既是学生积极参与、主动求知的过程,也是一个自主建构的过程;教师既不能“教”综合实践活动,也不能推卸指导的责任放任学生,而应把教师自己的有效指导与鼓励学生自主选择、主动探究有机结合起来。中等职业学校语文综合实践活动的实施模式结构中,活动流程的基本构成要素应该包括：创设活动情境、确定活动主题、搜集资料、小组活动、交流展示、总结评价等六大要素。 相似文献
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《现代食品质量控制》课程的教学改革与探索 总被引：1，自引：0，他引：1
本文阐述了《现代食品质量控制》课程教学改革的背景与原因 ,总结了该课程教学内容、教育思想、教学方式的改革与探索 ,并对如何培养具有创新能力的人才提出了一些有益的建议和措施 相似文献
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Antioxidant power of phytochemicals from Psidium guajava leaf 总被引：1，自引：0，他引：1
INTRODUCTION There is a considerable epidemiological evi-dence indicating association between diets rich infresh fruits and vegetables and a decreased risk ofcardiovascular disease and certain forms of cancer.Free-radicals are generated continuously in thebody due to metabolism and disease (Yeum et al.,2003). In order to protect themselves against freeradicals, organisms are endowed with endogenous(catalase, superoxide dismutase, glutathione per-oxidase/reductase) and exogenous (C a… 相似文献
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符合职教特点的语文课堂教学结构模式的构建必须依据中等职业学校语文课堂结构模式构建要素之间的关系,并符合科学性、适应性、反馈性的原则。 相似文献
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钱和 《浙江大学学报(A卷英文版)》2004,5(6)
Dried ground leaves of Psidium guajava L. (guava) were extracted by water and aqueous ethyl alcohol 50% (1:10) ratio, and the total phenolic content in the extracts was determined spectrophotometrically according to Folin- Ciocalteu's phenol method and calculated as gallic acid equivalent (GAE). Remarkably high total phenolic content 575.3 (15.5 and 511.6(6.2 mg of GAE/g of dried weight material (for ethanol guava leaf extracts and water guava leaf extracts, respectively) were obtained. The antioxidant activity of lyophilized extracts was determined at ambient temperature by means of a 2,2-diphenyl-1-picrylhydryzyl (DPPH˙) colorimetry with detection scheme at 515 nm. The activity was evaluated by the decrease in absorbance as the result of DPPH˙ color change from purple to yellow. The higher the sample concentration used, the stronger was the free radical-scavenging effect. The results obtained showed that ascorbic acid was a substantially more powerful antioxidant than the extracts from guava leaf. On the other hand, the commercial guava leaf extracts and ethanol guava leaf extracts showed almost the same antioxidant power whereas water guava leaf extracts showed lower antioxidant activity. The parameter EC50 and the time needed to reach the steady state to EC50 concentration (TEC90) affected the antiradical capacity of the sample. The antioxidant efficiency (AE) has been shown to be a more adequate parameter for selecting antioxidants than the widely used EC50. This study revealed that guava leaf extracts comprise effective potential source of natural antioxidants. 相似文献
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中等职业学校语文综合实践活动既是学生积极参与、主动求知的过程,也是一个自主建构的过程;教师既不能"教"综合实践活动,也不能推卸指导的责任放任学生,而应把教师自己的有效指导与鼓励学生自主选择、主动探究有机结合起来。中等职业学校语文综合实践活动的实施模式结构中,活动流程的基本构成要素应该包括:创设活动情境、确定活动主题、搜集资料、小组活动、交流展示、总结评价等六大要素。 相似文献