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粟智 《理化检验(化学分册)》2005,41(8):587-589
基于核磁共振原理及NMR谱图的解析和检索方法,利用MATLAB语言的开放式可扩充式体系结构特点,介绍了核磁共振波谱图谱信息库的特点、设计方法、技术处理及系统应用。 相似文献
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测试了30例正常人血清和60例淮安市食管鳞癌患者血清的氢核磁共振波谱.观察到正常人血清的共振峰主要集中在化学位移δH(ppm)1.00 ~5.00,构建了正常人血清的~1H NMR指纹图谱.同时将食管鳞癌患者血清1H NMR与正常人血清~1H NMR进行比较,发现食管鳞癌患者与正常人血清样品在δ_H 1.0 ~1.2 和δ_H 3.0 ~3.8(如δH 3.25、3.23、3.36、3.41、3.43)存在一定的差异波峰,即食管鳞癌的可能特征峰.表明借助于1H NMR特征峰有助于食管鳞癌的早期诊断. 相似文献
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随着现代信息技术的迅猛发展,声音、图像、视频等多种媒体在课程教学中广为应用,学生在任何时间、任何地点利用信息终端完成线上自主学习成为常态,课程教学的信息全媒体时代随之而来,全媒体对实验教学带来全新要求。本文在总结近年来仪器分析实验全媒体教学经验的基础上,开展全媒体时代背景下仪器分析实验的实践教学设计、资源库建设、新型教学模式构建、课堂教学考评、教学团队建设的研究,以期提高学生自主综合学习能力和高阶思维能力,提升仪器分析实验课程的教学效果,为深入开展全媒体教学改革提供参考。 相似文献
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This paper elaborates how to practice the diversified teaching in "top class" of Instrumental analysis laboratory course at Xiamen University. Instrumental analysis laboratory uses the network teaching platform to achieve the communication between teachers and students in time and space, to strengthen the exploratory and innovative thinking experience through the expansibility experiments. This paper also discusses some problems in the training of top talents. 相似文献
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The COVID-19 broke out on a large scale, and online teaching became the first choice for teachers. Avoiding network congestion and ensuring learning effects are the dilemmas faced by online teaching. With the help of the UOOC platform and the Tencent Classroom, taking the "Polymer Structure and Performance" course as a sample, we suggested a new "online asynchronous teaching" model. Among them, the SPOC course is convenient for students to manage their learning time; "Chapter Quiz" and "Student-to-Student Mutual Evaluation" are helpful for students to obtain multi-angle feedback; project tasks are focused on case analysis so that students carry out inquiry-based learning. Overall, the "online asynchronous teaching" model breaks the time and space restrictions on teaching and learning, guarantees the quality of teaching during the epidemic, and lays the foundation for creating a "golden class". 相似文献
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为应对新型冠状病毒肺炎疫情,教师通过在线直播和线上交互讨论等形式,积极探索有效的线上教学方式,为在家自主学习的学生提供良好的学习体验。本文以"无机化学与化学分析"课程为例,面对疫情期间的特殊性,将以往的"线上线下融合"的混合式教学模式进行相应调整,提供给大家"完全线上"的远程混合式教学案例,以获得实时高效的教学效果。 相似文献
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Li Chen Jinmei Zhou Jing Hu Yihui Chen Min Lin Yonghong Ruan Jinli Zheng Ailin Wei 《大学化学》2020,35(5):191-196
In the online organic chemistry and laboratory courses, the open or semi open quizzes before class and after class are adopted to explore the "dual quizzes teaching" mode on the network teaching platform. As the progress of "dual quizzes teaching", students' learning weakness, confidence and enthusiasm are improved continuously. Through the analysis of online students' learning data, questionnaire and interactive feedback, the teachers can evaluate the learning situation of the students and regulate instructional content in time. As a result of teaching online, the "dual quizzes teaching" mode has achieved highly positive effect. 相似文献
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Yalu Ma Xiaofei Ma Yun Tian Xue Qin Hongling Gao Huaji Liu Fanli Lu Xiaodong Wang Xingyao Wang Danfeng Li Jianhui Wang 《大学化学》2020,35(8):48-53
将课程思政应用到"无机化学和化学分析"教学中,更好发挥其价值引领作用。开展课程思政建设,应做到守正与创新。本文以价值引领为切入点,介绍如何将思想政治教育有机融入课程内容设置和课堂讲授等环节,力求培养学生的家国情怀、国际视野、法治意识、生态意识、工程伦理、人文关怀等科学素养,深入践行立德树人,提高本科教学质量。 相似文献
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针对仪器分析课程的特点,将"教研结合"的教学模式用于仪器分析理论教学中。通过对科研实例的深入解析,将涉及的相关教材知识穿插讲解。同时在仪器分析实验教学中采用"翻转课堂"的教学模式,即以"学生讲为主、教师讲为辅"的方式改变传统实验教学的弊端。从理论与实验两方面对仪器分析课程教学模式进行改革。 相似文献
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Quantitative Analytical Chemistry Laboratory is a fundamental course for undergraduates of the Chemical Science Base of the College of Science in China Agricultural University. The teaching hours were changed from 64 to 32 in the new curriculum, and the corresponding teaching contents were reduced. This paper discusses the way to combine the "teaching suggestion content of the chemistry experiments for students in chemistry majors" and training objectives within the framework of the new curriculum. In the case of less lab-teaching hours, the lab-teaching contents were reasonably selected and arranged into an integrated lab-teaching system. At the same time, the evaluation method of the experimental was reformed, and the performance of the new evaluation system was discussed. 相似文献