初中化学基本概念的教学

通过引导学生观察实验 ,形成概念 ,抓住概念的关键字词 ,帮助学生分析、理解概念 ,在复习时 ,通过找出概念间的联系 ,形成系统概念。从而帮助学生加深对概念的理解 ,进而应用概念解决实际问题     

体育教育专业学生营养与能量消耗状况调查与分析

本文对苏州大学体育学院体育教育专业学生进行膳食与24h能量消耗调查。结果表明：膳食结构不合理，动物性食物摄入过多。蛋白总量和动物蛋白偏多，豆类蛋白摄入不足，脂肪尤动物脂肪摄入量超标，Vc、VB2和钙缺乏，并存在脂肪供热比偏高，碳水化合物供热比偏低及早餐摄入能量低的问题。能量消耗显示，女生摄入能量超出消耗量，男生能量基本平衡。建议调整膳食结构，使各营养素的供应均衡。     

两汉嘉陵江流域人口规模及分布探析

文章根据《汉书·地理志》和《后汉书·郡国志》所记载两汉郡一级户口数,估算出西汉元始二年嘉陵江流域有248 388户,有1 057 263口。东汉永和五年嘉陵江流域有297 015户,有1 119 986口。两汉人口的分布主要呈不平衡性和沿江分布的特点。文章还对涉及嘉陵江流域各郡的人口数量多寡等问题进行了探讨。     

《泰囧》狂欢与我国中小成本电影的发展策略

《泰囧》票房创下我国国产商业电影新纪录,成为投资小收益高的电影运作典范。《泰囧》引发的蝴蝶效应及其运营成功的经验,对中国商业电影,特别是中小成本电影的发展有着重要的启示意义。     

对修订《普通高等学校图书馆规程》的若干建议

对2002年教育部印发的《普通高等学校图书馆规程》(修订),从修订原则、谋篇布局,对高校图书馆的性质、目标的再认识,组织体制、运行机制的再完善,服务理念的再深化,网络服务的时代化,改革创新促管理等方面,按章节顺序逐条提出修订意见和理由。     

秘响旁通：阅读《镜中》的一种方式

《镜中》是当代诗人张枣所写诗作中为人们熟悉的一首,它的魅力吸引着许多读者。“秘响旁通”作为阅读《镜中》的一种方式,这是一种“往后读”,其“诗意的发明”就是与传统对话,原诗诗意因此可以不断丰富。     

Passing by Proxy: Collusive and Convulsive Silence in the Trial of Leopold and Loeb

Despite unfolding as it did during the sexual revolution of the 1920s, Leopold and Loeb's “trial of the century” elicited a deluge of constitutive discourse that struggled against overt articulation and circulation of the boys’ queerness. In this essay, I argue that those discourses—dominant reportage, in camera courtroom conferences, and Clarence Darrow's famous summation—manifested what I label “passing by proxy,” a collusive and convulsive act of straight closeting that speaks queer sexuality despite concerted effort to silence it.     

清代丽江儒学教育与“士”阶层崛起

清代丽江儒学教育获得突飞猛进的发展,其大致可划分为三个阶段.地方官员致力于教、地方士人崛起及对本土士人的培养.丽土士人群体的崛起成为清朝丽江统治的中坚力量,促进了地方文化、风俗与社会变迁.     

Comparative effects of plant growth regulators on leaf and stem explants of Labisia pumila var. alata

Objective: Labisia pumila var. alata, commonly known as ’Kacip Fatimah’ or ’Selusuh Fatimah’ in Southeast Asia, is traditionally used by members of the Malay community because of its post-partum medicinal properties. Its various pharmaceutical applications cause an excessive harvesting and lead to serious shortage in natural habitat. Thus, this in vitro propagation study investigated the effects of different plant growth regulators (PGRs) on in vitro leaf and stem explants of L. pumila. Methods: The capabilities of callus, shoot, and root formation were evaluated by culturing both explants on Murashige and Skoog (MS) medium supplemented with various PGRs at the concentrations of 0, 1, 3, 5, and 7 mg/L. Results: Medium supplemented with 3 mg/L indole-3-butyric acid (IBA) showed the optimal callogenesis from both leaf and stem explants with (72.34±19.55)% and (70.40±14.14)% efficacy, respectively. IBA was also found to be the most efficient PGR for root induction. A total of (50.00±7.07)% and (77.78±16.47)% of root formation were obtained from the in vitro stem and leaf explants after being cultured for (26.5±5.0) and (30.0±8.5) d in the medium supplemented with 1 and 3 mg/L of IBA, respectively. Shoot formation was only observed in stem explant, with the maximum percentage of formation ((100.00±0.00)%) that was obtained in 1 mg/L zeatin after (11.0±2.8) d of culture. Conclusions: Callus, roots, and shoots can be induced from in vitro leaf and stem explants of L. pumila through the manipulation of types and concentrations of PGRs.     

电影《叫我第一名》的隐性教育效果

影视作品以其独有的形式和手段向学习者传递其显性及隐性的教育内容,充分发挥影视作品在英语学习中的教育功效,有助于培养听、说、读、写等综合应用能力强的新世纪英语人才。《叫我第一名》是一部感人至深的美国励志电影。通过观赏电影,学习者不仅可以学习并实践其语言知识和技能,而且可以在不知不觉中体会并进一步了解影片中所隐含的美国社会文化知识,从而达到隐性教育的效果。