某电厂超滤膜污染分析及离线化学清洗     

张贺  刘文超  尹成志  孙泽杭 《辽宁科技学院学报》2017,19(4)

针对某电厂超滤膜组件运行后出现膜污染的现象,通过检查膜组件运行时的水质分析、SEM扫描分析和能谱分析寻找造成污染的原因,证明超滤膜组件的污染物是有机物和胶体,为此,采取离线化学清洗,以先采用碱洗,后酸洗的方式,使膜性能得以恢复,并对此后超滤装置的维护提出有效的建议.  相似文献   

逻辑经验主义的可证实原则述评     

张蕴 《佳木斯教育学院学报》2014,(3):13-14

逻辑经验主义视可证实原则为判断任何命题(或陈述)是否具有意义的根本方法和重要标准。可证实原则包含经验证实和逻辑证实两方面内容。本文通过阐明可证实原则的合理性及其难以克服的缺陷,从而说明逻辑经验主义在寻求意义判定标准上的失败。  相似文献   

十年来国内幼儿教师专业发展研究的热点、趋势及展望——基于CiteSpaceⅡ可视化分析     

吴文涛  徐赟 《现代教育管理》2015,(2):87-91

统计中国知网2003—2013年的相关文献,运用可视化工具Cite SpaceⅡ绘制图谱可以发现,十年来该领域研究热点主要集中在幼儿教师专业发展背景、对象、内容、方式四方面;今后研究趋势主要有相关理论知识的引入、专业成长路径的探索、国外先进经验的借鉴、新型教师培训方式以及信息技术与幼儿课程整合的探讨。面向现实,我国幼儿教师专业发展研究应注重理论与实践结合、外控式专业发展与内驱式自我发展统一、国外知识借鉴与国内经验总结结合、个体成长与集体发展共赢、传统载体与新型平台整合。  相似文献   

AutoCAD图纸自动批阅和复制检测系统的研究与开发     

张芸  王继东 《凯里学院学报》2015,(3):107-112

实验和具体应用表明,AutoCAD图纸自动批阅和复制检测系统,能够有效减少学生复制作业的行为,降低了教师的工作量,并且批阅的结果较准确,提升了教学的质量.  相似文献   

从合作原则的违反看中国传统相声的幽默效应     

韩芸 《宜春学院学报》2011,33(3)

中国传统相声通常使用特定的修辞手法如隐喻、反语、夸张和谐音等,打破合作原则,生成会话隐义.这些"不合作"话语与相声中特定的情景因素重合,从而产生一种幽默滑稽的语言效果,使相声语言更加丰富多彩、诙谐有趣,从而增强了相声的艺术表达效果.  相似文献   

Social media use in the career development of graduate students: the mediating role of internship effectiveness and the moderating role of Zhongyong     

Changqing He  Jibao Gu  Wei Wu  Xuesong Zhai  Jun Song 《Higher Education》2017,74(6):1033-1051

This paper proves that social media use can contribute in important ways to employability outcomes. Specifically, results from a survey of 196 recent graduate students in China indicate that social media use is positively related to employability skills. Internship effectiveness serve as a mediating mechanism through which social media use affects employability skills. Zhongyong has a moderating effect on the social media use-internship effectiveness relationship. In addition to the direct moderating effect, Zhongyong is found to moderate the indirect relationship between social media use and employability skills. We discuss implications of these results for research and practice.  相似文献   

Teacher Beliefs in Action: A Cross-Sectional,Longitudinal Follow-Up Study of Teachers' Personal Practical Theories     

Barbara B. Levin  Ye He  Melony Holyfield Allen 《The Teacher Educator》2013,48(3):201-217

Based on a cross-sectional, longitudinal follow-up study of graduates from our master's-level elementary education program, in this article we examined changes in espoused beliefs elicited in the form of personal practical theories (PPTs) of three graduates with 2, 4, and 6 years of experience teaching in the same partnership school where they did their student teaching. We compared their original PPTs collected during their teacher education program with their current PPTs elicited in follow-up interviews, and then observed their classroom practices. Case summaries of these teachers are presented, and analysis and implications focus on changes in their PPTs, how their PPTs played out in their classrooms, and perceived barriers and supports to enacting their beliefs.  相似文献   

西湖雪意(组图)     

何一枫 《文化交流》2015,(2):44

  相似文献   

论在中学化学教学中如何渗透绿色、环保教育          下载免费PDF全文

庄萍  毛云  强娜 《惠州学院学报》2006,26(6):123-128

从梳理中学化学教材中绿色、环保教育的知识点入手, 在课堂教学过程、研究性学习、实验课及课外活动等四个方面阐述了中学化学教育渗透绿色、环保教育的具体做法。  相似文献   

大气中PM10浓度与气象因素的关系     

席云 《保山师专学报》2004,23(5):25-28

通过数据统计、相关分析方法,对保山市PM10的监测数据与各气象因素的关系进行分析,得到一些初步结果,为减轻和防止污染提供参考.  相似文献