Debye力的诱导作用

Debye力主要作用于极性分子和非极性分子之间。通过实例分析得知这种分子间的诱导作用,对于非极性物质在水中的溶解度,极性分子的溶沸点,氢酸酸性等均有影响。Debye力与其他的Van der Waals力一起,决定了一些物质的物理化学性质。     

学前特殊教育实践—— 一体化教育的途径

本文着重从学前一体化教育的管理、筛查、评估与安置、一体化的教育策略等方面介绍虹口区学前一体化教育的实践。最后,对一体化教育的成效加以分析,得出研究结论     

Examining the mediating effect of learning strategies on the relationship between students’ history interest and achievement

Research into the effect of interest consistently indicated that interest positively related to students’ achievement; however, the mechanism through which it affected the learning result remained an open question. This study intended to examine how learning strategies mediated the relationship between interest and achievement in the domain of history learning. Biggs Learning Process Questionnaire, which distinguishes between the surface and deep-level learning strategies, was adopted to describe students’ learning process. Structural equation modelling and the distribution of products test were used to evaluate the mediating effect. Based on available resources, the participants were seventh grade students in China. Analyses revealed that the surface-learning strategy served as a mediator, but the deep-learning strategy did not play the same role.     

文献资源的关联挖掘和联机分析处理研究

采用关联挖掘和联机分析处理技术对文献资源数据进行分析和挖掘,从中发现了读者对资源的访问模式和不同时间、不同类型资源的读者访问情况,这将有助于提高信息资源的利用率和为图书馆资源的采购、服务提供决策支持。     

Convenient surface functionalization of whole-Teflon chips with polydopamine coating

This paper presents a convenient strategy to modify the surface of whole-Teflon microfluidic chips by coating the channel walls with a thin layer of polydopamine (PDA) film, which is formed by oxidation-induced self-polymerization of dopamine in alkaline solution. Two coating strategies, static incubation and dynamic flow, are demonstrated and used for tuning the physical and chemical properties of the coated channel walls. The functionalized surfaces were investigated with the contact angle, X-ray photoelectron spectroscopy, and atomic force microscopy measurements. The coating time was optimized according to the fluorescent intensity of the green fluorescent protein immobilized on the modified surface. Applications of the PDA-modified Teflon microchips in bioanalysis were demonstrated with a typical sandwich immunoassay. Moreover, long-term cell culture experiments on modified and native Teflon chips revealed that the chip biocompatibility can be greatly improved with PDA coating. The results indicate that the surface properties of the Teflon can be easily controlled by the PDA modification, thus greatly expanding the application scope of whole-Teflon chips for various chemical and biological research fields.     

红军长征过云南与云南民族关系述论

本对红军长征过云南的民族政策及对云南民族关系的影响作了探讨，指出研究红军长征过云南的民族政策和民族关系，对今天提高广大干部群众的民族政策理论水平，对正确执行民族政策，妥善处理云南复杂而多样的民族关系，具有极大的现实意义。     

军校图书馆电子阅览室管理与发展

论文简述了军校图书馆电子阅览室的建立 ,以及军校电子阅览室的性质 ,结合实际探讨了电子阅览室管理当中的一些现实问题 ,针对当前管理的误区提出了军校电子阅览室的管理构想以及工作的重点与发展方向。     

视听新媒体概述

最近几年,“新媒体”一词,在人们的谈话和媒体报道中出现的频率比较高,新媒体在实践中的发展速度也比较快。为了追踪新媒体发展,满足读者了解和掌握新媒体知识、信息以及发展情况的欲望,从本期开始,我刊特邀请总局发展研究中心新媒体研究所所长董年初,为《专题讲座》栏目撰写文章,介绍新媒体的概况、有关技术以及其与广电媒体的关系。本讲座共六讲,分别是视听新媒体概述;视听新媒体与相关技术;视听新媒体与传统广电媒体的关系;视听新媒体与广电产业发展;视听新媒体与广电节目形态的变化;视听新媒体与广电管理体制改革。希望读者喜欢。     

我国图书馆学研究生教育现状调查与分析(下)

通过问卷的形式,对我国图书馆学研究生教育进行了比较详细的调查。调查内容涉及到入学考试、研究方向、授课方式、考试形式、课程设置、学术交流、导师对学生的指导、毕业论文的选题与撰写、就业取向以及科研成果等16个方面。根据调查统计的结果,经过数据分析,对目前我国图书馆学研究生教育提出一些建议。     

对我国青少年女子跳高运动员运动能力发展问题的研究(待续)

对４０年来我国优秀女子跳高运动员进行了深人调查,发现第一、二代运动员的跳高成绩随训练年限和年龄增长而不断提高,同时把最高成绩表现在最佳年龄阶段。而第三代运动员训练年限平均较短,退役年龄偏早,训练时间、手段与负荷比老一代运动员明显减少,身体素质发展不全面,基本功不扎实,严重影响了运动水平的进一步提高。同时发现,我国女子跳高运动员出成绩的趋势表现出双高峰现象与世界优秀女子跳高选手出成绩的规律相一致,符合人体生理发育规律和运动训练规律。