高分子材料课程中学生批判性思维的培养是该课程思政建设的重要内容之一。本文结合高分子材料学科特点,以学生日常听闻的化学谣言为特色思政教学切入点,就课程思政素材挖掘、教学实践进行了示例说明,将对高分子材料课程思政建设提供有...高分子材料课程中学生批判性思维的培养是该课程思政建设的重要内容之一。本文结合高分子材料学科特点,以学生日常听闻的化学谣言为特色思政教学切入点,就课程思政素材挖掘、教学实践进行了示例说明,将对高分子材料课程思政建设提供有益的实践参考。The cultivation of students’ critical thinking in the course of Polymer Materials is one of the important contents of the ideological and political education of this course. Combined with the characteristics of the discipline of Polymer Materials, this paper takes the common chemical rumors as a characteristic ideological and political education breakthrough point, and demonstrates the mining of ideological and political teaching materials and teaching practice. It will provide a useful practical reference for the ideological and political education of the Polymer Materials course.展开更多
《有机化学》不仅是化学化工专业的必修课,也是生物学、医学、药学、农学等相关专业的必修课。如何提高公共有机化学的教学质量,一直是从教者孜孜不倦探索的课题。以农学《有机化学》为例,该课程面临着学时少、内容多、学生的基础参差...《有机化学》不仅是化学化工专业的必修课,也是生物学、医学、药学、农学等相关专业的必修课。如何提高公共有机化学的教学质量,一直是从教者孜孜不倦探索的课题。以农学《有机化学》为例,该课程面临着学时少、内容多、学生的基础参差不齐等现状,为满足学生和专业培养双重需求,我们提出了三阶递进式培养目标,调整了课程教学内容,采用模块助学、启发式引导、混合教学模式和设置课下习题训练环节等多种方式来提高教学质量。从期末考试来看,教学改革初见成效,今后我们将持续不断地进行教学改革,期望取得越来越好的效果。Organic Chemistry is a required course not only for chemical engineering students but also for students in related fields, such as biology, medicine, pharmacy, and agriculture. Improving the teaching quality of public organic chemistry has always been a topic for teachers. Taking the agricultural major’s Organic Chemistry course at Jilin University as an example, it faces particular challenges such as limited class hours, extensive content, and students with different foundations. In order to meet the dual needs of students and professional training, we have proposed a three-stage progressing mode of the teaching objectives, adjusted the course content, and employed various methods, such as modular assistance, heuristic guidance, blended teaching models, and the inclusion of post-class exercise to enhance teaching quality. From the final grades, the initial results of the teaching reform are promising. We will continue to explore teaching reforms and expect to achieve better outcomes.展开更多
A facile synthetic route for conjugated polymer PPESO3 was proposed,through which not only the procedure was simplified,but also the dealkylation by BBr3 was avoided,and therefore,the preparing difficulty and danger w...A facile synthetic route for conjugated polymer PPESO3 was proposed,through which not only the procedure was simplified,but also the dealkylation by BBr3 was avoided,and therefore,the preparing difficulty and danger were greatly reduced,which was obviously beneficial to the preparation and application of(PPESO3).At the same time,the interactions between(PPESO3) and nonionic surfactant（PVP） were investigated.The results indicate that the aggregation of polymer backbone was effectively broken up and the steady complexes consisted of PPESO3 and PVP were formed which would contribute to the preparation of highly sensitive bio-sensors due to the affinity of PVP to biological macromolecules.展开更多
将电喷雾解吸电离质谱(DESI-MS)用于临床尿样的分析,优化了电喷雾溶剂流速、电喷雾电压和喷雾锥距离等重要参数.采用普通滤纸作为样品载体,在不需要样品预处理的前提下同时快速测定了临床尿样中的钾、钠、尿素、尿酸、丙酮酸和肌苷等多...将电喷雾解吸电离质谱(DESI-MS)用于临床尿样的分析,优化了电喷雾溶剂流速、电喷雾电压和喷雾锥距离等重要参数.采用普通滤纸作为样品载体,在不需要样品预处理的前提下同时快速测定了临床尿样中的钾、钠、尿素、尿酸、丙酮酸和肌苷等多种成分,并对各种成分的主要离子进行了串联质谱鉴定.DESI-MS在进行多组分同时测定时不需要进行样品预处理,缩短了测定时间,单个样品的分析时间不到1 m in.同时,采用内标法对所测定组分进行了半定量分析.展开更多
文摘高分子材料课程中学生批判性思维的培养是该课程思政建设的重要内容之一。本文结合高分子材料学科特点,以学生日常听闻的化学谣言为特色思政教学切入点,就课程思政素材挖掘、教学实践进行了示例说明,将对高分子材料课程思政建设提供有益的实践参考。The cultivation of students’ critical thinking in the course of Polymer Materials is one of the important contents of the ideological and political education of this course. Combined with the characteristics of the discipline of Polymer Materials, this paper takes the common chemical rumors as a characteristic ideological and political education breakthrough point, and demonstrates the mining of ideological and political teaching materials and teaching practice. It will provide a useful practical reference for the ideological and political education of the Polymer Materials course.
文摘《有机化学》不仅是化学化工专业的必修课,也是生物学、医学、药学、农学等相关专业的必修课。如何提高公共有机化学的教学质量,一直是从教者孜孜不倦探索的课题。以农学《有机化学》为例,该课程面临着学时少、内容多、学生的基础参差不齐等现状,为满足学生和专业培养双重需求,我们提出了三阶递进式培养目标,调整了课程教学内容,采用模块助学、启发式引导、混合教学模式和设置课下习题训练环节等多种方式来提高教学质量。从期末考试来看,教学改革初见成效,今后我们将持续不断地进行教学改革,期望取得越来越好的效果。Organic Chemistry is a required course not only for chemical engineering students but also for students in related fields, such as biology, medicine, pharmacy, and agriculture. Improving the teaching quality of public organic chemistry has always been a topic for teachers. Taking the agricultural major’s Organic Chemistry course at Jilin University as an example, it faces particular challenges such as limited class hours, extensive content, and students with different foundations. In order to meet the dual needs of students and professional training, we have proposed a three-stage progressing mode of the teaching objectives, adjusted the course content, and employed various methods, such as modular assistance, heuristic guidance, blended teaching models, and the inclusion of post-class exercise to enhance teaching quality. From the final grades, the initial results of the teaching reform are promising. We will continue to explore teaching reforms and expect to achieve better outcomes.
基金Scientific and Technological Research Planning Project of the 13th Five Year Plan of Jilin Provincial Department of Education(JJKH20200237KJ,JJKH20210233KJ)the Fund of Jilin Institute of Chemical Technology(2020 No.22,2021 No.20,2021 No.48)Jilin Scientific and Technological Development Program,the Central Guide Local Scientific and Technological Development Fund,Jilin Province Natural Science Fund(YDZJ202201ZYTS405).
文摘A facile synthetic route for conjugated polymer PPESO3 was proposed,through which not only the procedure was simplified,but also the dealkylation by BBr3 was avoided,and therefore,the preparing difficulty and danger were greatly reduced,which was obviously beneficial to the preparation and application of(PPESO3).At the same time,the interactions between(PPESO3) and nonionic surfactant（PVP） were investigated.The results indicate that the aggregation of polymer backbone was effectively broken up and the steady complexes consisted of PPESO3 and PVP were formed which would contribute to the preparation of highly sensitive bio-sensors due to the affinity of PVP to biological macromolecules.
文摘将电喷雾解吸电离质谱(DESI-MS)用于临床尿样的分析,优化了电喷雾溶剂流速、电喷雾电压和喷雾锥距离等重要参数.采用普通滤纸作为样品载体,在不需要样品预处理的前提下同时快速测定了临床尿样中的钾、钠、尿素、尿酸、丙酮酸和肌苷等多种成分,并对各种成分的主要离子进行了串联质谱鉴定.DESI-MS在进行多组分同时测定时不需要进行样品预处理,缩短了测定时间,单个样品的分析时间不到1 m in.同时,采用内标法对所测定组分进行了半定量分析.
文摘采用微波谐振腔对细胞色素c以及牛血清白蛋白进行微波辅助酶解,通过电喷雾三级四极杆质谱对得到的肽段进行分析,证明该方法可用很低的微波功率将蛋白质彻底酶解为多肽.通过调整微波条件可以使蛋白质的酶解效率基本达到100%,细胞色素c和牛血清白蛋白的序列覆盖率分别为45%和26%.该方法不但可将蛋白酶解时间由传统方法的16 h缩短为20min,还将功率由使用微波炉时的数百瓦降至20 W.
