共查询到20条相似文献,搜索用时 250 毫秒
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介绍黎明职业大学高分子材料加工技术专业的核心课程《高分子材料分析与测试》的课程设计和教学改革的做法。课程以实现学生向"准员工"的转变为教学目标。通过对行业企业进行调研,确定该课程的对接岗位为质量检验岗位,工作内容为化验、质检和品管,基于岗位工作内容进行课程设计。采用项目化方式,三个工作内容分别对应以典型方法、典型产品和典型常识为项目进行模块设计。以模块任务为中心,将教师的"讲"与学生的"练"有机结合起来,综合应用提倡学生互教的交互培训法、引导学生自主学习的主题探究法、锻炼学生专业素质的四阶段技能训练法等教学方法。 相似文献
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胞嘧啶与一氧化碳复合物的结构与性质 总被引:1,自引:0,他引:1
在B3LYP/6-311+G**水平上对胞嘧啶…CO复合物体系进行了理论计算, 发现了6个能量极小的复合物. 其结合方式是CO的C或O原子与胞嘧啶的N—H键形成氢键, 最稳定的复合物的结合能为-8.72 kJ·mol-1. CO的C原子与胞嘧啶的结合具有更强的优势, C原子结合的复合物中CO的键长缩短, 而O结合的复合物中CO键长伸长. 同时, 对复合物的振动分析发现, 在C原子结合的复合物中CO的伸缩频率蓝移, 而O结合的复合物中CO伸缩频率是红移的. 相似文献
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实验探究硫化钠溶液与高锰酸钾溶液在滴加顺序、用量、酸碱性不同的情况下的反应情况,理论分析不同现象的原因。在酸性条件下MnO4-被还原为Mn2+,S2-被氧化为SO42-,较高浓度MnO4-与Mn2+反应产生MnO2棕褐色沉淀,随着Na2S溶液的加入,反应体系由酸性过渡到碱性,Mn2+转化为Mn(OH)2白色沉淀。在强碱性条件下,观察到MnS肉红色沉淀,但是在较稀Na2S溶液中加入较浓KMnO4溶液观察到S淡黄色沉淀,在Na2S溶液中加入极稀KMnO4溶液无现象。 相似文献
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农药与农药污染 总被引:22,自引:0,他引:22
农药是指在农业生产中用于防治农作物病虫害、消除杂草、促进或控制植物生长的各种药剂的统称。正确使用农药可使粮食、棉花、水果增产[1] ;对控制农作物病、虫、草、鼠危害 ,促进产品高产优质 ,保证农业丰产丰收具有重要的作用[2 ] 。据估计 ,全国的粮食作物从生产到储藏过程中 ,因病、虫、草、鼠的危害 ,损失至少 2 0 %~ 30 % ;棉花损失约 1 5% ;水果、蔬菜则高达2 0 %~ 30 %。显然 ,2 1世纪的农业仍离不开农药 ,对农药的研究、生产和使用将继续发展[3 ] 。1 农药发展的简要历史 用化学药剂防治害虫可追溯到古希腊和古罗马时代。古… 相似文献
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颜卿 《广东微量元素科学》2009,16(11):57-57
大蒜中国古代称葫蒜,大蒜的原产地众说纷纷,有人说是在非洲,也有人说是在欧洲的南部和亚洲西部,甚至有人说原产地在中国,不过原产地在前苏联的吉尔吉斯沙漠地区的说法更为可信一些。大蒜最初为野生植物,它从该地往西方传播,传人古埃及王朝时代,已经和洋葱一样被广泛地栽培, 相似文献
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In order to better serve the local economic construction, the specialty of Salt Lake chemical industry is strengthened and optimized based on the concept of emerging engineering education (3E). The education reform has been carried out actively so as to meet the new needs of industrial development. The improvement of curriculum system was made by enhancing the multi-discipline education, updating the teaching contents, setting up school enterprise cooperation for teaching, research and application with strengthening innovation and engineering practice ability training. The reform has achieved good results and laid solid foundation for the future development of a new 3E major of Science and Technology of Salt Lake. 相似文献
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Taking a typical local and industry-orientated applied chemistry major as an example with focusing on the major changes in the form and content of the petrochemical industry, the way to reform the core curriculum system and teaching contents is presented. Based on the changing tendency of refinement of the petrochemical industry, a complete curriculum system with distinctive industry characteristics is set up according to the principles of the emerging engineering education (3E) with several reasonable suggestions. A new model for the construction of a 3E major in chemistry-related majors is suggested. It is a good reference for the construction of curriculum systems for other local and industry-orientated colleges who want to make 3E reform. 相似文献
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In the light of the new requirements of emerging engineering education for talent cultivation, this paper firstly analyzes the difficulties and deficiencies in the construction of applied chemistry major in Qingdao Agricultural University. This paper also introduces the practice in adapting to the regional economy and society development and the needs of students' growth, innovating the talent training mode, optimizing the talent training program, reconstructing the curriculum system, and strongly promoting the education and teaching reform based on the project. A new idea is provided for constructing the application-oriented talent training mode of industry-university-research for local agricultural colleges and universities in the background of the emerging engineering education. 相似文献
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According to the construction concept of the "emerging engineering education", ideas and the connotations for constructing "intelligent molecular engineering" are introduced. The necessities of setting up of "intelligent molecular engineering" are discussed and the cultivation demand of professional talents is analyzed. The construction draft of "intelligent molecular engineering" is also expounded, including the cultivation targets and requirements of graduation, the teaching content of curriculum system, teaching staff and teaching conditions. All the statements are significant for guiding the design and construction of "intelligent molecular engineering". 相似文献
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聚合反应工程是一门工程实践性较强的课程,基于核心素养培养理念本门课程进行教学改革探索,将大学生核心素养的培养落实到课程教学中。以注重实践应用能力,强化工程意识培养为重点,培养学生融合各学科知识,形成完整的知识体系;与校外实践平台合作,提升学生的社会适应能力、实践应用能力和创新意识;深化课程教学评价机制改革。通过对核心素养与已有课程体系的融合,探究了核心素养下高校聚合反应工程课程的教学改革策略。 相似文献
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The education characters of emerging engineering education (3E) is summarized. The necessary for reform and construction of new chemistry-related majors based on the ideal of 3E is discussed. The main ideas and ways proposed and the main research progresses made by the Instructional Committee of Chemistry Majors, Mistry of Education are briefly introduced with emphasis on the setup of two new majors namely "Chemistry Metrology and Technology" and "Intelligent Molecular Engineering" and reform of "Energy Chemistry". It is of guidance significance for the future reform of chemistry-related majors based on the 3E idea. 相似文献
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From the perspective of training engineering talents, this paper analyzed and summarized the main problems existing in the classroom and laboratory teaching of chemical engineering in colleges and universities. In order to meet the requirements of engineering certification, we discussed the teaching reform and put forward some effective measures from three aspects of the classroom and laboratory teaching, as well as the engineering consciousness training. 相似文献