scholarly journals Research and Practice of Teaching Reform of Organic Synthesis in Universities

2020 ◽  
Vol 9 (5) ◽  
pp. 167
Author(s):  
Jinyu Sun ◽  
Baoping Zhai ◽  
Sanhu Zhao ◽  
Minggen Zhao
Keyword(s):  
Organic Synthesis ◽  
High Efficiency ◽  
Colleges And Universities ◽  
Learning Ability ◽  
Knowledge Application ◽  
Teaching Situation ◽  
Teaching Content ◽  
Depth Analysis ◽  
High Standards

The teaching content of organic synthesis is rigorous and has high standards for students' knowledge application ability, thinking ability and learning ability. Therefore, how to promote the high-efficiency development of organic synthesis classroom teaching activities in colleges and universities has become a problem that needs to be studied by teachers. The author starts from the factors that hinder the development of organic synthesis classrooms in colleges and universities, and through an in-depth analysis of the actual teaching situation, finds a specific way to promote the smooth progress of the reform. Long-term development of career.

scholarly journals Innovation of Experimental Teaching Mode of College Hotel Management from the Perspective of Experience Education

2019 ◽  
Vol 3 (3) ◽  
pp. 144
Author(s):  
Li Pan
Keyword(s):  
Hotel Industry ◽  
Cultural Exchange ◽  
Colleges And Universities ◽  
Learning Ability ◽  
Hotel Management ◽  
Practical Application ◽  
Teaching Mode ◽  
Experimental Teaching ◽  
Teaching Situation ◽  
Experience Education

<p>Economic globalization has promoted the cultural exchange between countries. Under the background of increasingly frequent personnel exchanges between countries, it has generated the strong demand for professionals in the hotel industry. However, many domestic colleges and universities still face many urgent problems in training hotel management talents. Therefore, the integration of experiential teaching elements into the construction of the curriculum system of hotel management major is not only conducive to the enhancement of students' active thinking and learning ability, but also beneficial to the improvement of students' practical skills and comprehensive quality. In order to cultivate outstanding hotel management talents with strong practicality,comprehensiveness and high professionalism, this article from the perspective of ubiquitous teaching situation in domestic various universities hotel management professional, through the analysis of the concept and essence of experience education, and the characteristics of the experience type teaching, points out the necessity for domestic colleges and universities hotel management professional to implement experience type teaching, and expounds the practical application of experience type teaching is of great significance to innovation hotel management teaching mode.</p>

Integration of Digital Preservation Knowledge, Skills and Competencies in the Teaching Curricula of Library and Information Studies at the University of Botswana

Mousaion ◽  
2019 ◽  
Vol 37 (1) ◽  
Author(s):  
Thatayaone Segaetsho ◽  
Julie Moloi
Keyword(s):  
Digital Preservation ◽  
Records Management ◽  
Structured Interviews ◽  
University Of Botswana ◽  
Current Trends ◽  
Teaching Content ◽  
Library And Information Studies ◽  
Information Studies ◽  
The University

In the past few decades, digital technology has found a place in the acquisition, arrangement, description, preservation, and dissemination of information. However, heritage institutions are perturbed by the challenges of digital preservation strategies particularly for education. Despite continuous investment in digital preservation, there are limited skilled professionals to equip learners with the knowledge, skills and competencies required to drive digital preservation in Botswana. Therefore, this paper investigated the knowledge, skills and competencies related to digital preservation in the teaching curricula of the Department of Library and Information Studies (DLIS) at the University of Botswana. Data collection was done through intensive structured interviews with specific educators who teach courses on digital preservation in the archives and records management stream. The study revealed that despite the fact that the educators in preservation courses are aware of current trends in digital preservation, most of them have not obtained formal degree certification specific to digital preservation. The findings further revealed that minimal digital preservation competencies are observed in the teaching curricula. A significant number of challenges observed illustrated mainly a lack of resources and limited skills in terms of practical demonstrations by educators. The curricula mostly lacked clarity on long-term and short-term digital preservation. The study recommends that DLIS and other institutions should conduct surveys or curriculum auditing on digital preservation in order to improve the teaching content. A significant number of shortcomings regarding digital preservation that could motivate further studies are also discussed under the conclusion and recommendations section of this study.

To the 70th anniversary of World Meteorological Organization. Scientific and technical cooperation of Hydrometeorological Center of the USSR/Russia in the Programs of World Meteorological Organization

2020 ◽  
pp. 117-138
Author(s):  
S.V. Borshch ◽  
◽  
R.M. Vil’fand ◽  
D.B. Kiktev ◽  
V.M. Khan ◽  
...  
Keyword(s):  
Environmental Monitoring ◽  
High Efficiency ◽  
World Meteorological Organization ◽  
70Th Anniversary ◽  
Technical Level ◽  
Technical Cooperation ◽  
Wide Range

The paper presents the summary and results of long-term and multi-faceted experience of international scientific and technical cooperation of Hydrometeorological Center of Russia in the field of hydrometeorology and environmental monitoring within the framework of WMO programs, which indicates its high efficiency in performing a wide range of works at a high scientific and technical level. Keywords: World Meteorological Organization, major WMO programs, representatives of Hydrometeorological Center of Russia in WMO

Recent advances in the analysis full/empty capsid ratio and genome integrity of adeno-associated virus (AAV) gene delivery vectors

2020 ◽  
Vol 20 ◽  
Author(s):  
L. Hajba ◽  
A. Guttman
Keyword(s):  
Gene Delivery ◽  
High Efficiency ◽  
Analytical Techniques ◽  
Viral Gene ◽  
Adeno Associated Virus ◽  
Gene Delivery Vectors ◽  
Empty Capsid ◽  
Purification Methods ◽  
Viral Gene Delivery

: Adeno-associated virus (AAV) is one of the most promising viral gene delivery vectors with long-term gene expression and disease correction featuring high efficiency and excellent safety in human clinical trials. During the production of AAV vectors,there are several quality control (QC)parameters that should be rigorously monitored to comply with clini-cal safety and efficacy. This review gives a short summary of the most frequently used AVV production and purification methods,focusing on the analytical techniques applied to determine the full/empty capsid ratio and the integrity of the encapsidated therapeutic DNA of the products.

Electrochemical Oxidative Esterification of Thiophenols: Efficient Access to Sulfinic Esters

2020 ◽  
Vol 17 (7) ◽  
pp. 540-547
Author(s):  
Chun-Hui Yang ◽  
Cheng Wu ◽  
Jun-Ming Zhang ◽  
Xiang-Zhang Tao ◽  
Jun Xu ◽  
...  
Keyword(s):  
Organic Synthesis ◽  
Efficient Method ◽  
High Efficiency ◽  
Building Blocks ◽  
Constant Current ◽  
Good Efficiency ◽  
Oxidative Esterification ◽  
Efficient Access ◽  
New Applications ◽  
Sulfinic Esters

Background: The sulfinic esters are important and useful building blocks in organic synthesis. Objective: The aim of this study was to develop a simple and efficient method for the synthesis of sulfinic esters. Materials and Methods: Constant current electrolysis from thiols and alcohols was selected as the method for the synthesis of sulfinic esters. Results and Discussion: A novel electrochemical method for the synthesis of sulfinic esters from thiophenols and alcohols has been developed. Up to 27 examples of sulfinic esters have been synthesized using the current methods. This protocol shows good functional group tolerance as well as high efficiency. In addition, this protocol can be easily scaled up with good efficiency. Notably, heterocycle-containing substrates, including pyridine, thiophene, and benzothiazole, gave the desired products in good yields. A plausible reaction mechanism is proposed. Conclusion: This research not only provides a green and efficient method for the synthesis of sulfinic esters but also shows new applications of electrochemistry in organic synthesis. It is considered that this green and efficient synthetic protocol used to prepare sulfinic esters will have good applications in the future.

scholarly journals High-efficiency CO2 separation using hybrid LDH-polymer membranes

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiaozhi Xu ◽  
Jiajie Wang ◽  
Awu Zhou ◽  
Siyuan Dong ◽  
Kaiqiang Shi ◽  
...  
Keyword(s):  
Self Assembly ◽  
High Efficiency ◽  
Transmission Rate ◽  
Spray Coating ◽  
Separation Performance ◽  
Pdms Layer ◽  
Operational Testing ◽  
Enhanced Solubility ◽  
Double Hydroxide

AbstractMembrane-based gas separation exhibits many advantages over other conventional techniques; however, the construction of membranes with simultaneous high selectivity and permeability remains a major challenge. Herein, (LDH/FAS)n-PDMS hybrid membranes, containing two-dimensional sub-nanometre channels were fabricated via self-assembly of unilamellar layered double hydroxide (LDH) nanosheets and formamidine sulfinic acid (FAS), followed by spray-coating with a poly(dimethylsiloxane) (PDMS) layer. A CO2 transmission rate for (LDH/FAS)25-PDMS of 7748 GPU together with CO2 selectivity factors (SF) for SF(CO2/H2), SF(CO2/N2) and SF(CO2/CH4) mixtures as high as 43, 86 and 62 respectively are observed. The CO2 permselectivity outperforms most reported systems and is higher than the Robeson or Freeman upper bound limits. These (LDH/FAS)n-PDMS membranes are both thermally and mechanically robust maintaining their highly selective CO2 separation performance during long-term operational testing. We believe this highly-efficient CO2 separation performance is based on the synergy of enhanced solubility, diffusivity and chemical affinity for CO2 in the sub-nanometre channels.

Research on the methods and means of action strength training in aerobics training

2021 ◽  
pp. 002072092110042
Author(s):  
Xiaona Yang ◽  
Yang Ji ◽  
Da Ke ◽  
Fang Li
Keyword(s):  
Strength Training ◽  
Team Member ◽  
High Efficiency ◽  
Colleges And Universities ◽  
The Body ◽  
Energy Output ◽  
Control Group ◽  
Experimental Sample ◽  
Training Method ◽  
Core Strength

Aerobics is a beautiful and rhythmic sport. In recent years, aerobics has developed rapidly, and has become one of the essential courses of physical education in Colleges and universities. But the existing aerobics courses in Colleges and universities are less involved in the training process of action strength. Lack of strength quality is a common shortcoming of Aerobics Athletes in Colleges and universities. Therefore, this paper puts forward the methods and means of action strength training in aerobics training. According to the characteristics of competitive aerobics, combined with the traditional training strategy of action strength, this paper formulates the method of action strength training suitable for College Aerobics athletes. In order to further verify the effectiveness of this method, this paper takes a university aerobics team as an experimental sample to carry out a comparative analysis of the effect of action strength training. Relevant studies have proved that core strength training has the following effects on aerobics players: 1. Helps the calisthenics team member stabilize the trunk, improve the body's control ability and balance ability. 2. It is conducive to completing difficult movements of calisthenics with high efficiency and low energy consumption. 3. Helps the aerobics team member to enhance the special strength. 4. It can effectively prevent sports injuries. 5. It can improve the direction change and displacement speed of the body. 6. It can improve the energy output of the core strength to the limbs and other muscle groups during movement, so that the movement can be completed more perfectly.According to the results of the experiment, the explosive force and endurance of the experimental group after 8 weeks of training have been significantly improved, and formed a more obvious difference with the control group. The aerobics training method developed in this paper can be divided into two stages: the initial stage and the middle stage, which can better meet the students with different physical qualities. At the end of this paper, a fast strength training method is introduced, and the characteristics of different training methods are analyzed.

scholarly journals Design of a Database of Case Studies and Technologies to Increase the Diffusion of Low-Temperature Waste Heat Recovery in the Industrial Sector

2021 ◽  
Vol 13 (9) ◽  
pp. 5223
Author(s):  
Miriam Benedetti ◽  
Daniele Dadi ◽  
Lorena Giordano ◽  
Vito Introna ◽  
Pasquale Eduardo Lapenna ◽  
...  
Keyword(s):  
Low Temperature ◽  
Case Studies ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Industrial Sector ◽  
Implementation Rate ◽  
Depth Analysis ◽  
Technology Market

The recovery of waste heat is a fundamental means of achieving the ambitious medium- and long-term targets set by European and international directives. Despite the large availability of waste heat, especially at low temperatures (<250 °C), the implementation rate of heat recovery interventions is still low, mainly due to non-technical barriers. To overcome this limitation, this work aims to develop two distinct databases containing waste heat recovery case studies and technologies as a novel tool to enhance knowledge transfer in the industrial sector. Through an in-depth analysis of the scientific literature, the two databases’ structures were developed, defining fields and information to collect, and then a preliminary population was performed. Both databases were validated by interacting with companies which operate in the heat recovery technology market and which are possible users of the tools. Those proposed are the first example in the literature of databases completely focused on low-temperature waste heat recovery in the industrial sector and able to provide detailed information on heat exchange and the technologies used. The tools proposed are two key elements in supporting companies in all the phases of a heat recovery intervention: from identifying waste heat to choosing the best technology to be adopted.

scholarly journals Development of an Accounting Skills Simulation Practice System Based on the B/S Architecture

2018 ◽  
Vol 13 (10) ◽  
pp. 134 ◽  
Author(s):  
Jianmei Liu ◽  
Rong Fu
Keyword(s):  
Data Storage ◽  
Network Architecture ◽  
Content Management ◽  
Colleges And Universities ◽  
Accounting Students ◽  
Script Language ◽  
Self Evaluation ◽  
Teaching Content ◽  
Teaching Efficiency ◽  
Simulation Practice

Nowadays, companies are more in need of accounting professionals with both theoretical knowledge and practical abilities. However, the traditional accounting teaching model in colleges and universities cannot train students in both aspects. In order to improve the practical abilities of accounting major students in colleges and universities and promote the accounting teaching upgrade and reform, this paper proposes an accounting skills simulation practice system based on the B/S architecture, aiming at improving the comprehensive abilities of accounting students and teaching efficiency. The technical roadmap of this system adopts the B/S as the network architecture of the teaching system, HTML and Java Script language as the system programming language and MySQL database as the data storage and management database. The system consists of user administration, knowledge base management, teaching content management, practical test score management and other modules, which not only achieves the self-evaluation on the full set of accounting skills, but also improves the accounting teaching efficiency and helps teachers gain more control over the teaching process. This study can serve as some guidance to colleges and universities in cultivating innovative and practical accounting talents.

The Application of QQ Group in Modern Educational Technology Course

2013 ◽  
Vol 380-384 ◽  
pp. 2544-2547
Author(s):  
Ling Xu ◽  
Wei He
Keyword(s):  
Educational Technology ◽  
Collaborative Learning ◽  
Teaching Practice ◽  
Education Technology ◽  
Colleges And Universities ◽  
Modern Education ◽  
Teaching Content ◽  
Teacher Professional ◽  
The Way ◽  
Technology Course

The modern education technology course is a compulsory course of teacher professional in Colleges and universities, after years of teaching practice, the teaching content and teaching form has been relatively mature, but there are still some problems: the contradiction between class hour and teaching content; the limitations of communication between teachers-students and students-students, the lack of collaborative learning, etc. Put forward the way and scheme by using QQ group to solve the above problems.

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