Studies on characteristics of nanostructure of N-TiO2 thin films and photo-bactericidal action   总被引：1，自引：0，他引：1  

Xu MF  Lin S  Chen XM  Peng YZ 《Journal of Zhejiang University. Science. B》2006,7(7):586-590

Pseudomonas aeruginosa strain （AS 1.50） and Bacillus subtilis strain （AS 1.439） from Ming lake were decomposed by photocatalytic nanostructure N-TiO2 thin films in a photo-reactor under UV irradiation. The different thickness nanostructure N-TiO2 thin films coated on mesh grid were prepared by sol-gel method and immobilized at 500 ℃ （films A） or 350 ℃ （films B） for 1 h in a muffle furnace. The results showed that N-TiO2 thin film B （8.18 nm thickness, 2.760 nm height and 25.15 nm diameter） has more uniform granular nanostructure and thinner flat texture than N-TiO2 thin film A （12.17 nm thickness, 3.578 nm height and 27.50 nm diameter）. The bactericidal action of N-TiO2 thin film A and film B for Pseudomonas aeruginosa strain （AS 1.50） and Bacillus subtilis varniger strain （AS1.439） were investigated in this work. More than 95% of photocatalytic bactericidal efficiency for Pseudomonas aeruginosa strain （AS 1.50） and 75% for Bacillus subtilis strain （AS 1.439） were achieved by using N-TiO2 thin films-B for 70-80 rain of irradiation during the photo-bactericidal experimental process. The results indicated that the photo-induced bactericidal efficiency of N-TiO2 thin films probably depended on the characteristics of the films.  相似文献   

我国信息素养类MOOC调研与分析     

周琪 《图书情报工作》2018,62(12):143-148

[目的/意义]立足于我国信息素养类MOOC课程建设的实践,提出行之有效的发展建议,旨在为我国信息素养教育的建设与发展提供参考与借鉴。[方法/过程]采用文献调研法和案例分析法对27所高校或机构在国内知名的MOOC平台上开设的35门信息素养类MOOC课程展开调研,对照最新颁布的《高等教育信息素养框架》,围绕教学内容、教学模式、教学资源、教学互动与反馈等方面分析国内信息素养MOOC建设的现状。[结果/结论]通过对我国信息素养类MOOC建设与应用现状的分析,提出改进建议,对我国信息素养教育的建设与发展具有指导意义。  相似文献   

女性主义不能失去价值目标!--论性别审美意识形态的几个主要特征     

万莲子 《湖南师范大学社会科学学报》2006,35(1):88-92

性别审美意识形态架构是文化政治生态文明建设中的一部分,它关注的是如下的情形：1）性别关系申的人性尺度;2）社会运行中的双性构成——公民社会发育程度;3）日常社会中性别平等惯性思维的确立与否,性别平等社会风化的形塑进程;4）由性别歧视生发开来的社会公正公平理念幅度大小;5）由双性构成的社会实现人道、正义共识的基础如何。  相似文献   

Information avoidance in the age of COVID-19: A meta-analysis     

《Information processing & management》2023,60(1):103163

Guided by three major theoretical frameworks, this meta-analysis synthesizes 17 empirical studies (15 articles with 18,297 participants, 13 of them are from non-representative samples) and quantifies the effect sizes of a list of antecedents (e.g., cognitive, affective, and social factors) on information avoidance during the COVID-19 context. Findings indicated that information-related factors including channel belief (r = -0.35, p < .01) and information overload (r = 0.23, p < .01) are more important in determining individual's avoidance behaviors toward COVID-19 information. Factors from the psychosocial aspects, however, had low correlations with information avoidance. While informational subjective norms released a negative correlation (r = -0.16, p < .1) which was approaching significant, positive and negative risk responses were not associated with information avoidance. Moderator analysis further revealed that the impacts of several antecedents varied for people with different demographic characteristics (i.e., age, gender, region of origin), and under certain sampling methods. Theoretically, this meta-analysis may help determine the most dominant factors from a larger landscape, thus providing valuable directions to refine frameworks and approaches in health information behaviors. Findings from moderator analysis have also practically inspired certain audience segmentation strategies to tackle occurrence of information avoidance during the COVID-19 pandemic.  相似文献   

广东省高等学校学报调查与分析   总被引：4，自引：2，他引：2  

王蔚良  黄建军  翟云玉 《中山大学学报论丛》1998,(4)

通过问卷调查的方法,对全省４４家高校学报编辑部的５０份刊物进行调查．调查内容包括：编辑部建设、学报出版发行情况、经费及办公条件、社会效益等４个方面．最后对结果进行了初步分析．为今后学报工作提供了决策参考  相似文献   

斑节对虾杆状病毒传播媒介的研究     

李贵生  何建国  江静波 《中山大学学报论丛》1998,(4)

应用石蜡切片及电镜技术检测了斑节对虾（Ｐｅｎａｅｕｓｍｏｎｏｄｏｎ）饲养塘中的桡足类（Ｃｏｐｅｐｏｄａ）及作为斑节对虾活饵料的蓝蛤（Ａｌｏｉｄｉｓ）和河蚬（Ｃｏｒｂｉｃｕｌａｆｌｕｍｉｎｅａ）,探讨了斑节对虾杆状病毒的可能传播途径及传播媒介  相似文献   

元典命题与人文素质教育课程的建构     

刘增合 《复旦教育论坛》2006,4(2):44-48

元典文化是近年来史学界提出的一个概念,尽管学界对其科学性仍有争议,但它对人文素质教育课程的建构却极具启发意义。既往人文素质教育的实践中越来越形成一种“路径依赖”,也就是注重从元典文献这一角度来构筑人文素质教育的资源体系。从整体上看,使用和挖掘元典教育资源似乎更应该把握核心性文献,以及后来者对其经典解释。设计人文教育课程体系时,可以借鉴“经——论——律”的逻辑序列来构建元典教育的基本架构。  相似文献   

From budget allocation to collection development: A system for the small college library     

《Library Acquisitions: Practice & Theory #》1993,17(2):183-189

Research has shown that faculty involvement in library collection development is directly proportional to the size of the library collection itself; specifically, as library collection size increases, faculty involvement in library collection development decreases. Conversely, the opportunity for faculty involvement in library collection development is enhanced in the small-college setting where collection development is a collaborative effort between the faculty, who serve as the counterparts of subject bibliographers in larger university settings, and librarians, who both oversee the collection development process and serve as bibliographers in general and interdisciplinary subject areas. The case study documents the collection development philosophy, selection and acquisitions policies, and accounting procedures used at the Iris Holt McEwen Library and LaRose Resources Center at Elon College in North Carolina. The interrelatedness of selection, acquisition, and accounting processes as well as the collaboration between librarians and faculty in collection development are emphasized. A time line for the collection development process is included.  相似文献   

基于标准化的高等教育质量标准体系——内在逻辑、保障机制与建设路径          下载免费PDF全文

刘晓凤  李研 《上海教育评估研究》2021,10(2):7-12

基于标准化的高等教育质量标准体系是参教议教、规范监督、服务社会、利益表达的社会导向,是为社会发声,是高等教育质量标准体系社会要求的表达。基于标准化的高等教育质量标准体系的本质是达成共识,形成对高等教育质量有基本的统一认识。基于标准化的高等教育质量标准体系通过建构时间维、逻辑维、条件维、级别维、性质维、对象维六维一体的建设路径,打造条件维、对象维的规范机制和自我、制度、政府、社会四位一体的保障机制,来推动高等教育质量标准体系的有效运作。  相似文献   

东晋南朝时期吴兴习战之风试析     

张彧 《首都师范大学学报(社会科学版)》2005,(6):33-38

历东晋南朝,吴兴人始终保持着习战之风,他们对南方政权有着非常重要的影响,甚至成为王朝创立者。影响吴兴习战之风的因素既与吴兴所在的地理环境有关,也与吴兴大族在东晋初期的政治境遇有关。  相似文献