Basic Data Collection and Database Construction of Food and Drug Vocational Education in China
In order to fully understand the basic situation of personnel training of the national food and drug vocational education in China, we collected, investigated and analyzed the data scattered in the "National Vocational College Professional Setting Management and Public Information Service Platform", the "Ministry of Higher Education Vocational College Personnel Training Status Data Collection and Management Platform", and the "Annual Report on the Quality of Personnel Training for Higher Vocational Education". We had found out the national background of food and drug vocational education, and had arranged the basic data of the distribution and structure of food and drug specialties in the higher vocational education, as well as the teaching conditions of various specialties, and the quality of professional personnel training, which were expected to provide the necessary data support for the optimization and improvement of the vocational education system and the formulation of the policy of personnel training and development in food and pharmaceutical industry.
Construction and Practice of Modular Teaching Mode of Bioinorganic Chemistry
Focusing on the core requirement to enhance students' professional abilities, we modularized the teaching content of bioinorganic chemistry considering the class teaching practical experience, which followed the concept of modularization of the specialized curriculum of "frontier guidance+thematic discussion+project practice", and took "structure-nature-activity relation" as the clue. Meanwhile, we combine problem-oriented learning with case teaching in the practical teaching. Results showed that most students thought the modular teaching mode worked better for understanding the theoretical knowledge and improving the enthusiasm to participate in project training.
Problem Oriented Knowledge Point to Whole Knowledge Teaching Methodology in Pharmaceutics Curriculum Taking Teaching of “chiral” as Example
A new teaching method is designed and practiced in order to explain and introduce the "chiral" concepts and related knowledge in the pharmaceutics curriculum. The method is summarized and named "problem oriented knowledge point to the whole knowledge teaching methodology" by the author. The "Events after thalidomide" is introduced as the problem oriented knowledge point at the beginning of the course. The whole knowledge related is expended later. The teaching goals are obtained at the end of the course. This teaching method is with value to the other teachers.
A Versatile Element: Germanium
The discovery of germanium fills the blank of the periodic table, and consolidates the status of periodic law. The germanium crystal, because of excellent properties, has been widely used in semiconductors, infrared optics, fiber optics devices and communication industry, making it a strategic resource for national defense. Recently, the unique physicochemical properties and biological effects of germanium have been gradually recognized, making it a "star element" in the field of heath care. However, much more rigorous experimental studies are needed to provide solid evidences to reveal the mechanism of its biological effects.
Reform and Construction of Course System of Material Chemistry Experiment
Interstellar Chemistry:The Significance and Pattern Exploration on Its Introduction into Fundamental Chemistry Education
Interstellar chemistry originated and developed from mid-twenties is promoting the mankind's exploration towards the origin and evolution of universe, origin of life, and earth environment. The interaction between astronomy and other disciplines including astrophysics, spectroscopy, and fundamental chemistry plays a critical role in human's cognition towards interstellar chemistry especially the novel compounds and chemical reactions. Yet there is no precedent throughout the world where interstellar chemistry is introduced into college chemistry curriculums, this paper can be treated as a novel exploration on the introduction of current exploration and previous discovery of interstellar chemistry. Based on the analysis towards concerning classic theories and cases of application, the feasibility of this manuscript is further briefly explored. Specifically, the introduction of intercellular chemistry into chemistry education is meant to effectively attract students' attention beside broadening their horizons. The manuscript aims to promote the development of creative interdisciplinary talents in the new century.
Interactive Verification of the Calculation Formulas of Entropy Difference
To solve the problem that the students are difficult to remember and master the calculation formulas of entropy difference in the chemical thermodynamics, this paper presents a method which can strengthen the memory of the formulas through the interactive verification of the calculation formulas. Firstly, the paper introduces the conventional deductive method which is based on the entropy definition. Then, the paper introduces another differential deductive method based on the thermodynamic basic equation and the whole differential, and verifies interactively the results of the entropy difference calculation obtained by these two deductive methods. In addition, the equation of adiabatic process of the ideal gas and the corresponding formulas of entropy difference calculation are also deduced.
Course Constitution of General Chemistry for Foreign Students Under Mode of Learning Paradigm
This paper analyzed the properties of teaching paradigm which concerned about teaching and learning paradigm which focused on learning, aiming at enhancing the teaching quality of general chemistry for foreign students. Furthermore, the effect of learning paradigm was investigated on the boosting efficient study and improving the levels of cognitive domain targets. Then evaluation was fulfilled to illustrate the results of leaning paradigm. The outcomes depicted that learning paradigm had great improvement on helping student study effectively and realize educational goals. Meanwhile it is beneficial for teachers on their own development and improvement.
Application of the Studies of Chinese Ancient Civilization on Teaching of Organic Chemistry in Colleges and Universities
During the practical teaching of organic chemistry, unique teaching methods, that is, the studies of Chinese ancient civilization, such as poetry, scene setting, manners and customs, humanistic moral codes and so on, were used to enable students to learn independently in a relaxed and pleasant atmosphere, and to achieve the learning effect with a permanent memory. This is expected to provide a reference of the education methods for colleges and universities.
Study and Practice on Flipped Classroom Teaching Mode of Organic Chemistry Experiment Based on Rain Classroom Platform
Based on the concept of flipped classroom and rain classroom platform, the teaching mode of organic chemistry experiment was reformed and practiced around the goal of cultivating application-oriented talents in our university. The specific implementation process of the teaching mode was elaborated with the synthesis of ethyl acetate as an example. The results show that the teaching mode can not only improve the students' pre-class preview effect and stimulate their subjective initiative in learning, but also promote the teaching efficiency by using multimedia information technology and contribute to the construction of a well-trained teacher-team.
Functional Extension of Comprehensive Chemistry Experimental Teaching System Under General Education
In order to increase the competitive ability of chemistry discipline under the majors distribution policy, a multi-level experimental teaching framework was built to extend the functions of comprehensive experimental teaching system under the background of enrolment of students in large category. With the help of instrument platform and scientific management of experimental courses, the construction progress of the system is upgraded. The transformations of the research achievements, all kinds of competitions and university-enterprise cooperation projects to experimental contents are also accelerated to raise the quality of experiment teaching.
Experiment Design of Extracting and Determining Total Flavones from Cereals
The experiment of extracting and determining total flavones from 5 kinds of cereals such as millet, broom corn millet, highland barley, buckwheat and sorghum was fulfilled by some college students, who were divided into different groups to participate in the experiment. Among the experiment, 3 kinds of extraction methods were used, such as solvent extraction, ultrasound extraction and microwave extraction. The results showed that the extraction rate of flavones in highland barley was the highest, among 5 kinds of cereals. This comprehensive experiment can improve the students' abilities to use all skills flexibly they have learned and raise the abilities to solve practical problems, which is suitable to be set up as a comprehensive experimental project for senior undergraduates.
Thinking on College Students' Chemistry Experiment Skill Competition
Aiming at the problems such as insufficient foundation of basic experiment operation, insufficient comprehensive experiment ability, insufficient connection between basic theory and basic experiment teaching in the first chemistry experiment skill competition of College of Chemistry, Jilin University, this paper puts forward some pertinent measures, such as strengthening basic experiment teaching, increasing comprehensive design experiment, and strengthening the connection between experimental teaching and theoretical teaching. This will promote the reform of experimen teaching and improve the overall quality and level of chemistry experiment teaching.
Determination of Chromium (Ⅵ) by Diphenylcarbohydrazide Spectrophotometry:Disadvantages and Improvement
The determination of toxic heavy metal chromium (Ⅵ) is an important experiment content in the majors of environment, chemistry and etc. As national standard method, the 1,5-diphenylcarbohydrazide spectrophotometry (GB/T 7467-1987) is usually used. However, this national method has some disadvantages of using volatile toxic solvent, cumbersome operation and unfriendliness to the environment and operator. In the improved method, the diphenylcarbohydrazide chromogenic agent was prepared by using ethanol instead of toxic acetone as the solvent. Moreover, hydrochloric acid was instead of the mixed acid of sulphuric acid and phosphoric acid, which was then directly added to the chromogenic agent. This improved method simplified the operation step, improved work efficiency and reduced environmental and health damage. To evaluate accuracy of the proposed method, the concentration of chromium (Ⅵ) in wastewater samples was simultaneously determined by the atomic absorption spectroscopy method. The results showed that there was no significant difference between the two methods.
Research on Learning Process of “Thermochemistry” in Physical Chemistry Course:Text Analysis of Knowledge Construction of Pre-Service Chemistry Teachers at Local Universities
Preservice Chemistry Teachers' Epistemology of Model and Its Teaching
Reform and Practice of Teaching Mode Based on International Industry-Researching Institute-University Educational Cooperation and Collaborative Training Platforms
Based on the analysis of the difficulty of internationalization encountered in the implementation of ability-oriented engineering education for current provincial engineering colleges, and the case study of the material discipline of Qingdao University, a reform of teaching mode on the basis of an international industry-researching institute-university educational cooperation and collaborative training platforms was proposed, measured and proved practical. It fully integrated overall resources of the material discipline to promote the international integration training platform of industry, researching institute and university, and constructed an efficient dynamic management mechanism of the training platform. The all-round international reform of teaching staff, teaching content, teaching model and scientific research was carried out based on the training platform. The reform practice of teaching mode based on the international industry-researching institute-university educational cooperation and collaborative training platforms has made a remarkable achievement. It has a good demonstration effect in promoting international education reform for provincial colleges and universities.
History of Elemental Carbon and Its Educational Value