Influence of Magnetic Field on the Rectification Process of Binary Heterogeneous Azeotrope

To improve separate effect of binary heterogeneous azeotrope in the magnetic field with different magnetic induction intensity, the influence of magnetic field on the rectification process of binary heterogeneous azeotrope was investigated with l-butanol-water system. The results show that the composition of liquid-liquid phase equilibrium of l-butanol-water system has definitely changed, the composition of l-butanol in light phase （l-butanol layer） increases by 1. 17%-1.63% and the composition of water in heavy phase （water layer） increases by 1.21%-1.58% under the influence of magnetic field. By separation of magnetization, the composition of l-butanol increases by 0.8%-1.2% and the recovery ratio of 1 -butanol increases by 1.6%-2.5%. Magnetic field has positive effect, however, the magnetized effect is not in proportion to magnetic induction intensity and has an optimum condition, in the range of 0.25 T-0. 3 T.     

Degradation kinetics and mechanisms of phenol in photo-Fenton process

Phenol degradation in photochemically enhanced Fenton process was investigated in this work. UV-VIS spectra of phenol degradation showed the difference between photo-Fenton process and UV/H2O2, which is a typical hydroxyl radical process. A possible pathway diagram for phenol degradation in photo-Fenton process was proposed, and a mathematical model for chemical oxygen demand (COD) removal was developed. Operating parameters such as dosage of H2O2 and ferrous ions, pH, suitable carrier gas were found to impact the removal of COD significantly. The results and analysis of kinetic parameters calculated from the kinetic model showed that complex degradation of phenol was the main pathway for removal of COD; while hydroxyl radicals acted weakly in the photo-Fenton degradation of phenol.     

我国教育政策评估存在的问题及对策

教育政策评估与教育政策问题认定，教育政策决定，教育政策执行构成完整的教育政策过程，教育政策评估在我国还处于初创阶段，存在着诸多问题。实事求是，恰如其分地分析问题，有针对性地提出相应的措施，有助于推动教育政策评估工作的顺利开展，提高我国教育政策评估工作的水平，促进决策的民主化和科学化，最终的构建起既符号国际通行原则，又符合中国国情的教育政策评估体系。     

人造金刚石提纯工艺酸洗废液处理及综合利用研究

本文对人造金刚石提纯工艺酸洗废液进行了研究,在试验和分析的基础上,设计了科学的处理工艺,对酸性废液中的有价金属进行了回收,并对最终废水予以中和处理。     

“形容词+动态助词‘了’”结构的多角度研究

“形容词+动态助词‘了’”结构一直是一个存在争议的结构,对于形容词能不能带动态助词、带上动态助词后词性有无变化的观点,还存在着很大分歧。以“形容词+动态词‘了’”结构为分析目标,将这个结构化为五种类型进行分别讨论,从语义语法语用功能上探讨其特点,并同动词带动态助词“了”进行平行比较,得出他们的异同。     

Disparity in practice: diverse strategies among teachers implementing interactive whiteboards into teaching practice in two Swedish primary schools

This paper reports on a project aimed at identifying and exploring the development and implementation processes of teaching practices with interactive whiteboards (IWBs) in two Swedish K-6 schools. The purpose of the project was to generate results and insights of value when preparing student teachers for professional use of IWBs and to give school leaders guidelines when implementing IWBs. A range of methods were used to collect rich and varied empirical materials in this exploratory project. Judging from our data, it was obvious that the implementation process of IWBs, just like other information and communication technology initiatives, is very technology-oriented, but also dependent on attitudes. Over the course of time in the project, different strategies emerged among the teachers regarding whether and how they used the IWBs in their lectures. It also became increasingly clear during the study that there is a distinction between technical interactivity and pedagogical interactivity. Our results further suggest that training is needed when introducing these boards for future users. This training should include both technical instructions and pedagogical discussions.     

凸现历史事件的学习过程--关于"文艺复兴"教学的研究与思考

历史事件的学习过程应是一个融学科专业知识学习、学习方法养成、情感态度培养于一体的多元的有机结合的过程。以“文艺复兴”一节的教学为例，阐述重视历史事件的学习过程，必须要建立新型的课堂文化，使学生在获得知识的同时，掌握唯物主义的分析方法，提高历史思维的能力；借助各种教学方法、手段以及评价体系，让学生在学习过程中体会艺术的形式是如何为人文主义的内容服务的，帮助学生真正理解人文主义思想的内涵，体验并逐步形成人文精神，进而达到知识、方法、能力、情感、态度、价值观教育合一的效果。     

高校家庭经济困难学生认定过程的量化探索与思考

本文就当前高校中家庭经济困难学生认定工作中存在的认定标准缺乏可操作性和可比性、认证方式和程序缺乏科学性以及地方基层组织的证明材料缺乏规范性与真实性等问题,提出了高校困难生认定的量化指标体系解决方案及需要注意的相关问题。     

社会民主进程与公民参与

本文首先分析了公民参与所具有的价值,即公民参与蕴含个人利益与公共利益的统一,为追求个人利益提供了一个有效的途径;公民参与蕴含对公平正义的追求,有利于达成共识、促进社会和谐与稳定。进而揭示了社会民主进程与公民参与的本质联系,即公民参与有助于提高公民的民主意识、权利意识和责任意识;公民参与是实现公民权利的基本途径;公民参与可以使公共政策更加科学;公民参与可以有效防止公共权力的滥用。同时,社会民主进程能够激发公民参与的热情;社会民主进程能够提高公民参与的能力。最后,提出了培养公民参与精神的三个主要途径:教育灌输,舆论引导,实践养成。     

基于微格教学的幼儿教师培养模式研究

微格教学在师范生培养的过程中发挥着重要作用。幼儿教师是一种综合性很强的职业,运用微格教学来促进幼儿教师发展,对于提高幼儿教师的素质仍有重大意义。通过介绍和分析微格教学的概念和特点,探讨在幼儿教师培养过程中实施微格教学的基本过程以及注意事项并阐述了实施微格教学的效果。