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玉米淀粉接枝高吸水性树脂的合成研究 总被引:1,自引:0,他引:1
对影响淀粉—丙烯酸接枝共聚反应的引发剂用量、淀粉/单体比例、聚合温度和聚合时间等因素进行了实验考察,确定了合成玉米淀粉接枝高吸水性树脂的最佳工艺条件。合成了吸水率为400g.g^-1~600g.g^-1的高吸水性树脂.为其工业化生产提供了技术参数。 相似文献
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“健康儿童?健康社会”(HCSC)是在欧盟体育健康发展准则下,构建由家庭、学校、体育组织、地区政府等诸多部门组成的复合体系,通过降低BMI值减少超重,改善运动能力,进而提高个人生活质量。主要通过对HCSC项目的历史发展进行论述,对HCSC的核心理念、组织构架、运作模式3方面进行剖析,并以中国实验学校为例,对实验干预前后学生的身体健康指标进行对比分析,旨为国内相关领域研究抛砖引玉。 相似文献
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对安乐死立法的法理学思考 总被引:2,自引:0,他引:2
吴亚肖 《青海师范大学学报(哲学社会科学版)》2003,(4):52-54
安乐死立法,是人类对待生命的正确的理性选择,是社会发展到一定历史阶段的必然结果。安乐死在西方一些国家已经立法并实施。而在我国,由于几千年传统的儒家化思想习俗的影响,安乐死立法阻力颇大。但无论从安乐死的道德伦理的角度。安乐死的医学伦理的角度,还是从安乐死的法理学分析看,安乐死立法,对于健全我国的法制建设,完善对生命保护的法律体系,加大对生命的保护力度,不但具有理论上的必要性,也具有积极的现实意义。 相似文献
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David?PassigEmail author Jenny?Maidel-Kravetsky 《Education and Information Technologies》2016,21(3):531-543
The aim of this study was to determine whether, as a result of collaborative-online reading of a chapter from a book of an academic nature, the quality of the collaborative summary that the readers would write would be higher than that written by readers who would both read the same chapter and write a summary in a face-to-face setting. In this study we examined the difference between the summaries written by participants from two groups, each group was divided into subgroups of 3 participants who had read collaboratively a chapter of a book, and collaborated on writing a summary. The participants of the experimental group read the chapter as it appeared in a website for collaborative reading built especially for this study and the participants were asked to summarize the chapter on a shared online digital document. The participants of the control group were asked to read the chapter face-to-face and to collaboratively summarize it in hand writing. The quality of the summaries was evaluated with a tool developed by Rivard (2001). This tool was developed to measure the quality of the summaries. In our study the main and secondary ideas that were supposed to be included in the participants’ summaries were identified by three literature teachers using ten different criteria and the summaries were analyzed by two other judges based on these criteria. The findings indicated that there were significant differences in the majority of the writing indicators being measured with the tool. The findings indicated that collaborative-online reading and writing produce a summary of a higher quality than one read and hand written collaboratively face-to-face. 相似文献
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信任作为一种自觉行为,具有社会学和心理学的来源。过去的记忆是产生美誉度的心理基础,美誉度是形成信任的前提。但美誉度不是信任,而仅是一种态度。要将这种态度转变为行动——信任,组织形象传播战略就必须以信任为导向。组织形象传播战略在实施过程中可按时间维度分为前、中、后三个阶段或策略,分别把吸引公众注意、增加熟悉度、满足公众需求作为阶段性重点。 相似文献
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Five suburban community colleges in a metropolitan area collaborated on a survey to parents of high school graduates of the class of 2002 who attended the colleges in fall 2002. The study was undertaken to learn more about parents roles in their students selection of community colleges, to give insights and information about this important community college constituency, and to assist community colleges to shape more effective ways to foster positive and supportive opinions among parents of potential students. Parents want the community college to provide students with credits and grade point averages enabling transfer, overestimate their students academic skills as measured by course placement tests, engaged in a number of college-choice activities, and indicate that factors associated with lifestyle and money were major reasons for selecting the community college. Associations between parents social capital and perceptions of their students academic abilities were found for a number of dependent variables examined. The study also revealed important differences in how participating institutions record and calculate key measures such as credits earned and grade point averages. 相似文献
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学习“三个代表”的重要思想 ,必须坚持理论联系实际的马克思主义学风。要深入把握“三个代表”重要思想的理论根据和实践根据 ,更要研究怎样切实有效地实践“三个代表”。 相似文献