Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx202003034
A. Tang, Ya-Ping Ren, Xiaojuan Deng, Guosheng Ding
Nuclear magnetic resonance (NMR) spectroscopy plays an important role in chemistry, pharmacy, biology, environment, medicine and material sciences, etc. With the popularization of NMR spectroscopy, the cleaning of NMR tubes has been paid more and more attention. From the traditional brush cleaning to ultrasonic cleaning, and then to the specific NMR tube cleaner, the cleaning methods of NMR tubes are developing towards the direction of low cost, high efficiency, non-destructive and green. With the advantages of saving labor and simple operation, NMR tube cleaner represents the developing trend of NMR tube cleaning mode, and so has been more and more widely used.
{"title":"The Development of Cleaning Methods for Liquid Nuclear Magnetic Resonance Tubes","authors":"A. Tang, Ya-Ping Ren, Xiaojuan Deng, Guosheng Ding","doi":"10.3866/pku.dxhx202003034","DOIUrl":"https://doi.org/10.3866/pku.dxhx202003034","url":null,"abstract":"Nuclear magnetic resonance (NMR) spectroscopy plays an important role in chemistry, pharmacy, biology, environment, medicine and material sciences, etc. With the popularization of NMR spectroscopy, the cleaning of NMR tubes has been paid more and more attention. From the traditional brush cleaning to ultrasonic cleaning, and then to the specific NMR tube cleaner, the cleaning methods of NMR tubes are developing towards the direction of low cost, high efficiency, non-destructive and green. With the advantages of saving labor and simple operation, NMR tube cleaner represents the developing trend of NMR tube cleaning mode, and so has been more and more widely used.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70221972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx202004037
Lingling Wei, Ling Xu, Heng-Wei Wei, Yongce Zhang, Tao Hu, Miao Cui, H. Jiao
: In the era of “Internet +”, with the help of national excellent MOOC course of Chinese university and Mlabs-virtual experimental software, Tencent classroom is built to provide a diversified and efficient online inorganic chemistry basic laboratory classroom by combining a variety of modern education technologies with the concept of flipped classroom. Taking the redox reaction experiment as an example, we designed a multi-link teaching process and carried out a multi-faceted assessment. The online teaching can not only strengthen the cultivation of students’ comprehensive and innovating ability, but also help teachers to update the teaching mode and create the new experimental content in line with the development of the times, so as to realize the mutual learning between teachers and students in the exploration of experimental teaching reform.
{"title":"Exploration and Practice of Modern Educational Technology Applied in the Construction of Redox Reaction Online Laboratory Teaching","authors":"Lingling Wei, Ling Xu, Heng-Wei Wei, Yongce Zhang, Tao Hu, Miao Cui, H. Jiao","doi":"10.3866/pku.dxhx202004037","DOIUrl":"https://doi.org/10.3866/pku.dxhx202004037","url":null,"abstract":": In the era of “Internet +”, with the help of national excellent MOOC course of Chinese university and Mlabs-virtual experimental software, Tencent classroom is built to provide a diversified and efficient online inorganic chemistry basic laboratory classroom by combining a variety of modern education technologies with the concept of flipped classroom. Taking the redox reaction experiment as an example, we designed a multi-link teaching process and carried out a multi-faceted assessment. The online teaching can not only strengthen the cultivation of students’ comprehensive and innovating ability, but also help teachers to update the teaching mode and create the new experimental content in line with the development of the times, so as to realize the mutual learning between teachers and students in the exploration of experimental teaching reform.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70222437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx202003042
Zhongping Yao, Peilin Cong, Sue Hao, Zhaohua Jiang, Yudong Huang
中图分类号:G643.0;O6 Exploration and Practice of Postgraduate Training in Materials and Chemical Engineering (Chemical Engineering Field) of Harbin Institute of Technology Zhongping Yao *, Peilin Cong, Sue Hao, Zhaohua Jiang, Yudong Huang School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China. Abstract: The status and main problems in the cultivation of master degree graduate training in materials and chemical engineering (chemical engineering field) of Harbin Institute of Technology were analyzed by applying the concept of engineering education paradigm. Combined with the professional directions of chemical engineering discipline in HIT, i.e. “one field” (new chemical material field) and “two industries” (electrochemical engineering and polymer material engineering), the revision of training program, the course constructions and the measures for engineering practice ability and innovation ability training were explored and practiced with the purpose of the cultivation of industry leaders and high-level talents in chemical engineering filed.
{"title":"Exploration and Practice of Postgraduate Training in Materials and Chemical Engineering (Chemical Engineering Field) of Harbin Institute of Technology","authors":"Zhongping Yao, Peilin Cong, Sue Hao, Zhaohua Jiang, Yudong Huang","doi":"10.3866/pku.dxhx202003042","DOIUrl":"https://doi.org/10.3866/pku.dxhx202003042","url":null,"abstract":"中图分类号:G643.0;O6 Exploration and Practice of Postgraduate Training in Materials and Chemical Engineering (Chemical Engineering Field) of Harbin Institute of Technology Zhongping Yao *, Peilin Cong, Sue Hao, Zhaohua Jiang, Yudong Huang School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China. Abstract: The status and main problems in the cultivation of master degree graduate training in materials and chemical engineering (chemical engineering field) of Harbin Institute of Technology were analyzed by applying the concept of engineering education paradigm. Combined with the professional directions of chemical engineering discipline in HIT, i.e. “one field” (new chemical material field) and “two industries” (electrochemical engineering and polymer material engineering), the revision of training program, the course constructions and the measures for engineering practice ability and innovation ability training were explored and practiced with the purpose of the cultivation of industry leaders and high-level talents in chemical engineering filed.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70222490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx202005014
Yupeng Guo, Yan Zhao, Han Gao, Na Gao, Gen Li
: The online teaching of chemistry and society course has been successfully carried out by using national high-quality online open course as the course resource and Superstar Learning Platform for online teaching. The practice shows that online teaching based on the combination of China University MOOC, and Superstar Learning Platform has been well received by students, who are generally easy to accept and highly motivated to participate. This practice shows good teaching effect.
{"title":"Online Teaching Practice of Chemistry and Society Course Based on the Combination of China University MOOC and Superstar Learning Platform","authors":"Yupeng Guo, Yan Zhao, Han Gao, Na Gao, Gen Li","doi":"10.3866/pku.dxhx202005014","DOIUrl":"https://doi.org/10.3866/pku.dxhx202005014","url":null,"abstract":": The online teaching of chemistry and society course has been successfully carried out by using national high-quality online open course as the course resource and Superstar Learning Platform for online teaching. The practice shows that online teaching based on the combination of China University MOOC, and Superstar Learning Platform has been well received by students, who are generally easy to accept and highly motivated to participate. This practice shows good teaching effect.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70222747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx202004045
Xinrui Zhong, Hang Zhou, Lin Jiang, Yan Su, Xiaoshuang Ma, Yun Zhang, Chengbin Zheng
: This paper aims at the implementation of the online courses of chemistry majors in Sichuan University in response to the epidemic, and explores a more effective and reasonable way to organize teaching. Based on the investigation and feedback of teachers and students, this paper points out the difficulties and challenges of online teaching at the present stage: the classroom interaction and discussion are not smooth, the online teaching tools and methods are diversified, and the chemistry laboratory courses are not matched. Therefore, the School of Chemistry of Sichuan University will coordinate the online teaching platform, enhance the classroom interaction, and launch the “chemistry virtual simulation experiment teaching center” to ensure the teaching progress and quality during the epidemic prevention and control.
{"title":"An Exploration into the Online Teaching of Chemistry Courses under the COVID-19","authors":"Xinrui Zhong, Hang Zhou, Lin Jiang, Yan Su, Xiaoshuang Ma, Yun Zhang, Chengbin Zheng","doi":"10.3866/pku.dxhx202004045","DOIUrl":"https://doi.org/10.3866/pku.dxhx202004045","url":null,"abstract":": This paper aims at the implementation of the online courses of chemistry majors in Sichuan University in response to the epidemic, and explores a more effective and reasonable way to organize teaching. Based on the investigation and feedback of teachers and students, this paper points out the difficulties and challenges of online teaching at the present stage: the classroom interaction and discussion are not smooth, the online teaching tools and methods are diversified, and the chemistry laboratory courses are not matched. Therefore, the School of Chemistry of Sichuan University will coordinate the online teaching platform, enhance the classroom interaction, and launch the “chemistry virtual simulation experiment teaching center” to ensure the teaching progress and quality during the epidemic prevention and control.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70222966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx202004155
Lingling Li, Quan Lan, Zhenggen Zha, Jun Jiang, Hongyan Feng, Yuan Zheng
It has been two months since a boom of online education triggered by the epidemic in China. At present, we are keeping focus on how to optimize our online class. In the case of chemistry laboratory courses, there’s not much that can be done to experimental operations through online teaching. While for the traditional teaching procedure, there is still room for improvement in terms of integrating research to teaching, interactivity, etc. This paper will present some design strategies for improving teaching the organic chemistry laboratory online. To be specific, it describes how teaching materials like the lesson plan and virtual lab were coordinated into the online teaching. And we will also discuss the holistic approach to a better outcome for students’ active learning and integration research into teaching by redesigning multiple phases, such as the pre-laboratory preparation, live online class, experimental operations.
{"title":"Making the Best Use of Online Teaching for Organic Chemistry Laboratory Courses through Instructional Design and Practice","authors":"Lingling Li, Quan Lan, Zhenggen Zha, Jun Jiang, Hongyan Feng, Yuan Zheng","doi":"10.3866/pku.dxhx202004155","DOIUrl":"https://doi.org/10.3866/pku.dxhx202004155","url":null,"abstract":"It has been two months since a boom of online education triggered by the epidemic in China. At present, we are keeping focus on how to optimize our online class. In the case of chemistry laboratory courses, there’s not much that can be done to experimental operations through online teaching. While for the traditional teaching procedure, there is still room for improvement in terms of integrating research to teaching, interactivity, etc. This paper will present some design strategies for improving teaching the organic chemistry laboratory online. To be specific, it describes how teaching materials like the lesson plan and virtual lab were coordinated into the online teaching. And we will also discuss the holistic approach to a better outcome for students’ active learning and integration research into teaching by redesigning multiple phases, such as the pre-laboratory preparation, live online class, experimental operations.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70223046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
: Based on the actual situation of local application-oriented universities, the necessity and urgency for constructing the undergraduate training model of materials chemistry are addressed. Some beneficial experiences on the specialty construction, containing the reform of curriculum, lecturing, laboratory teaching, off-campus practice and useful exploration of professional teacher training, differential development, integration with the local economy, are highlighted. Analyses of the admissions and employment data show the positive effects of the reform. Under the guidance of policy and the fusion mode of education and industry, a stable and effective training model suitable to the local application-oriented universities has been built.
{"title":"Construction Research on the Undergraduate Training Model of Material Chemistry of Local Application-Oriented Universities","authors":"Guilin Wen, Daofu Liu, Fengwu Wang, Chen Yonghong, Qiyong Zhu, Yijun Wei, Tian Dong","doi":"10.3866/pku.dxhx201903035","DOIUrl":"https://doi.org/10.3866/pku.dxhx201903035","url":null,"abstract":": Based on the actual situation of local application-oriented universities, the necessity and urgency for constructing the undergraduate training model of materials chemistry are addressed. Some beneficial experiences on the specialty construction, containing the reform of curriculum, lecturing, laboratory teaching, off-campus practice and useful exploration of professional teacher training, differential development, integration with the local economy, are highlighted. Analyses of the admissions and employment data show the positive effects of the reform. Under the guidance of policy and the fusion mode of education and industry, a stable and effective training model suitable to the local application-oriented universities has been built.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70214499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx201904007
Xuyin Ding, Fei Cun, M. Xie
: The Matrix Laboratory (Matlab) software was used to program the Plot function, and the hyperbolic curves of binary copolymer composites were drawn successfully by inputting the reactivity ratio of monomers. From the hyperbolic curve, the binary copolymerization behavior of two monomers can be observed simultaneously, and the varying regularity between the second monomer and the corresponding polymer composition can be visualized in one graph, which will be helpful to deepen the understanding for the copolymerization reaction of two monomers.
{"title":"Using the Plot Function in Matlab to Draw the Hyperbolic Curve of Binary Copolymer Composites","authors":"Xuyin Ding, Fei Cun, M. Xie","doi":"10.3866/pku.dxhx201904007","DOIUrl":"https://doi.org/10.3866/pku.dxhx201904007","url":null,"abstract":": The Matrix Laboratory (Matlab) software was used to program the Plot function, and the hyperbolic curves of binary copolymer composites were drawn successfully by inputting the reactivity ratio of monomers. From the hyperbolic curve, the binary copolymerization behavior of two monomers can be observed simultaneously, and the varying regularity between the second monomer and the corresponding polymer composition can be visualized in one graph, which will be helpful to deepen the understanding for the copolymerization reaction of two monomers.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70214800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.3866/pku.dxhx201904029
Min Liu, Qing Feng
: This article explored the teaching organization of “health culture promotion” in the course of nutrition chemistry. Students’ expectation of participation, participation degree in activities and information acquisition rate after activities were investigated. The results showed that “health culture promotion” enabled the students to develop their knowledge into a comprehensive application of knowledge and other practical abilities, which plays a radiating role in the popularization of nutritional chemistry in society.
{"title":"Reforming the Teaching Form of Nutrition Chemistry to Improve Students' Ability","authors":"Min Liu, Qing Feng","doi":"10.3866/pku.dxhx201904029","DOIUrl":"https://doi.org/10.3866/pku.dxhx201904029","url":null,"abstract":": This article explored the teaching organization of “health culture promotion” in the course of nutrition chemistry. Students’ expectation of participation, participation degree in activities and information acquisition rate after activities were investigated. The results showed that “health culture promotion” enabled the students to develop their knowledge into a comprehensive application of knowledge and other practical abilities, which plays a radiating role in the popularization of nutritional chemistry in society.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70215011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Molecular machines have attracted significant attentions as one of the most promising aspects of chemistry for their potential applications ever since receiving the 2016 Nobel Prize in Chemistry. The molecular assembler, also called the nanofactory, is a novel type of molecular machines that are capable of controlling the chemical reactions precisely at the microscopic level. As an analog to the macroscopic factories, nanofactories are comprised of a “transporting” part, the molecular walkers, and an “assembling” part, the molecular robotic arms. In this review, we provide a brief introduction of the research progress in recent years together with analysis on the principles of designing, constructing and operating molecular assemblers. We also summarize the prospects and challenges in the research area of molecular assemblers.
{"title":"Molecular Assembler: Nanofactories","authors":"Zhen-Ren Huang, 北京 sup 北京大学化学与分子工程学院, Zhexuan Lei, Juan Yang, 剑桥 马萨诸塞州 sup 麻省理工学院化学系","doi":"10.3866/pku.dxhx201906016","DOIUrl":"https://doi.org/10.3866/pku.dxhx201906016","url":null,"abstract":"Molecular machines have attracted significant attentions as one of the most promising aspects of chemistry for their potential applications ever since receiving the 2016 Nobel Prize in Chemistry. The molecular assembler, also called the nanofactory, is a novel type of molecular machines that are capable of controlling the chemical reactions precisely at the microscopic level. As an analog to the macroscopic factories, nanofactories are comprised of a “transporting” part, the molecular walkers, and an “assembling” part, the molecular robotic arms. In this review, we provide a brief introduction of the research progress in recent years together with analysis on the principles of designing, constructing and operating molecular assemblers. We also summarize the prospects and challenges in the research area of molecular assemblers.","PeriodicalId":23447,"journal":{"name":"University Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70217883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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