共查询到20条相似文献,搜索用时 62 毫秒
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无机化学采用多媒体教学的实践与思考 总被引:9,自引:0,他引:9
随着计算机技术的发展 ,多媒体教学已成为必不可少的辅助教学手段。我们以多年教学中使用的教案为基础 ,筛选和优化出教学内容脚本 ,以PowerPoint为主体软件 ,配合与化学结构和分子图形紧密相关的ChemOffice ,ChemWin等绘图软件 ,开发研制出一套无机化学辅助教学课件 ,并在 1 999级和 2 0 0 0级化学系学生的无机化学大课课堂中使用 ,取得良好的教学效果。 在传统课堂教学中 ,由于教师板书的大小和书写轻重不同 ,使学生有时看不清楚黑板上的书写内容。这是在传统教学中无法避免的缺陷 ,也影响了教学效果。 … 相似文献
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实践课程新理念的一种探索--从《门捷列夫与元素周期律的发现》网络化教学谈起 总被引:2,自引:2,他引:0
化学作为一门自然科学,与数学、物理相比,知识间的逻辑关系不强,定量关系也不是特别普遍。有不少学生甚至认为“化学是理科中的文科”。这从另一角度也启发我们,化学富有人文色彩。我们认为,加强化学的人文性,突出化学知识间的逻辑性,应成为化学教师着意开拓的两个领域。 相似文献
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In order to analyze the nuclear classification by nuclear whole number (relationship between the numbers of Proton and neutron or numbers of nucleon's cluster), it is introduced two parameters S(=2Z-N) and H(=N-Z). In the square chart of atomic nucleus with coordinates S and H,some important results have been obtained. 相似文献
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W. Loveland 《Journal of Radioanalytical and Nuclear Chemistry》2000,243(1):147-154
A brief overview of nuclear reactions is given. Recent advances in our understanding of sub-barrier fusion with stable and radioactive nuclei, the synthesis of new heavy nuclei, the synthesis of new n-rich nuclei, the giant dipole resonance and multifragmentation are discussed. 相似文献
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H. Nakahara K. Sueki W. Sato K. Akiyama 《Journal of Radioanalytical and Nuclear Chemistry》2000,243(1):169-179
Radiochemical techniques have been applied in various ways to the study of fullerenes and metallofullerenes for the past several years, and they have provided invaluable information pertaining to the stability, structures, and formation of the novel carbon material. This paper reviews those experimental results that have fully shown the usefulness and uniqueness of radionuclides demonstrated in the field of fullerene science. 相似文献
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Since the nuclei in a molecule are treated as stationary, it is perhaps natural that interpretations of molecular properties and reactivity have focused primarily upon the electronic density distribution. The role of the nuclei has generally received little explicit consideration. Our objective has been to at least partially redress this imbalance in emphasis. We discuss a number of examples in which the nuclei play the determining role with respect to molecular properties and reactive behavior. It follows that conventional interpretations based solely upon electronic densities and donating or withdrawing tendencies should be made with caution. 相似文献
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E. Bujdosó 《Journal of Radioanalytical and Nuclear Chemistry》2001,250(3):603-610
Bibliography
Analysis by Nuclear Reactions and Activations A Current Bibliography 相似文献17.
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以建构主义学习理论为指导,以现代教育技术为手段,以实施学习环境设计为核心,以有效发挥学生学习的主动性、积极性、创造性和提高教学质量为目标,通过多媒体技术与现代教学模式、方法和思想的有机结合,开发以研究性教学为背景的化工基础多媒体课件,初步实现了化工基础课程教学方法和手段的创新以及教学过程和内容的优化。 相似文献
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Andrey G. Kazakov Julia S. Babenya Taisya Y. Ekatova Sergey S. Belyshev Vadim V. Khankin Alexander A. Kuznetsov Sergey E. Vinokurov Boris F. Myasoedov 《Molecules (Basel, Switzerland)》2022,27(5)
Nowadays, cobalt isotopes 55Co, 57Co, and 58mCo are considered to be promising radionuclides in nuclear medicine, with 55Co receiving the most attention as an isotope for diagnostics by positron emission tomography. One of the current research directions is dedicated to its production using electron accelerators (via photonuclear method). In our work, the yields of nuclear reactions occurring during the irradiation of natNi and 60Ni by bremsstrahlung photons with energy up to 55 MeV were determined. A method of fast and simple cobalt isotopes separation from irradiated targets using extraction chromatography was developed. 相似文献
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利用当前通用的多媒体技术、以多媒体制作工具Authorware为主,高级语言VB及其它一些主流的媒体创作工具为辅,设计了高分子化学多媒体教学系统。它由八个模块组成,即绪论、自由基聚合、自由基共聚合、离子聚合反应、配位聚合反应、连锁聚合实施方法、逐步聚合反应、聚合物的化学反应。每个模块又分为四部分,即具体章节、本章要求、知识拓展及课后作业。采用接口技术,实现了内容的录入、删除、修改、访查以及资料查阅等诸多功能。它不仅可以作为高分子化学课程课堂教学使用,又可作为本专业学生及相关专业学生有效地进行高分子化学课后复习、习题训练、自学并阅读课外参考资料。该教学系统使用方便、操作简单、针对性强,是一种较实用的计算机辅助教学工具。 相似文献