Application of Graphene and Its Derivatives on Food Safety Monitoring
Cultivation of Research Consciousness in Fine Chemicals Chemistry Teaching
Exploration and Practice of Blended Teaching Mode in General Course of Wonderful World of Chemistry
Wonderful world of chemistry is a general selective course for the non-chemical major undergraduates of Tianjin Normal University. The course is mainly focused on the modern active research areas and realities of life by adopting a heuristic, case-based, and interactive blended teaching mode. It used a variety of methods such as image display, video display, discussion, questionnaire, which could arouse students' enthusiasm and initiative to master the course in a relaxed state. Furthermore, it combined knowledge, practicability and interests, avoiding the tedious description of complicated chemical structure.
Teaching and Thinking for Phosphorus Chemistry Based on Contrast Teaching Method
Connection of Senior High School and University Chemistry Teaching Taking Atomic Structure as Example
Due to the huge differences in learning methods between senior high school and university,it is difficult for students to adapt rapidly to the teaching of university inorganic chemistry.In this paper,the connection of senior high school and university chemistry teaching was researched,taking atomic structure as an example.Through the link of getting the right entry point,raising question,initial learning the basic knowledge,detailed explaining the principle and practicing exercises,the transition and connection of knowledge can be smoothly realized,and the ability of independent thinking and autonomous study are also cultivated.
Innovative Experiment: Study on Preparation and Adsorption Properties of Biomass Adsorption Materials
Contact with reality,an innovative experiment was designed to explore the biomass adsorption materials and its modification.Through the pretreatment of raw materials,the preparation of adsorption materials and adsorption experiments,students' observation ability,analysis ability and practical ability were trained.Meanwhile,these processes familiarized students with basic experimental operations in inorganic chemistry and analytical chemistry and made students master the use of UV-visible spectrophotometer.Innovative experiments could provide a platform for the development and cultivation of college students' innovative ability,and stimulate students' interests in scientific research.
Improved Experiment Method to Synthesize Ethyl Acetoacetate
Improvement on Experiment of Borax Bead
Borax bead experiment is a very important experiment of boron element and its compounds. The experiment is hard to get a satisfying result using traditional nickel wire carrier and different textbooks have different descriptions on borax bead's color. This article made detailed research on various aspects such as the carrier's selection, dosage,ratio, temperature, mechanism and common metal salt borax beads' colors.
Determination of Hygroscopicity of Huperzine A
The hygroscopicity of huperzine A was characterized and compared by using dynamic vapor sorption (DVS),and the determination of moisture of huperzine A was measured by Karl Fischer's method.Huperzine A has the hygroscopicity before and after the drying,which would cause the lower result in assay.The DVS shows that it will reach the balance when hygroscopic moisture comes to 7%.While the sample is in the constant temperature and humidity chamber for 15 days,humidity 75% and temperature 15℃,it has no hygroscopicity based on DVS,and the content of huperzine A can be accurately determined.The content uniformity of huperzine A was determined by high performance liquid chromatography (HPLC).
Establishment of Chemistry Teaching Ability-Oriented Integrated Cultivating Process Pattern for Full-Time Education Master
In view of the main problems encountered in the training of chemical full-time education master,the core goal of cultivating education master is chemistry teaching ability.This paper constructed the constitutive model of chemistry teaching ability and developed evaluation tools.This model included teaching design, teaching implementation, teaching evaluation and teaching research ability.On this basis, it constructed and implemented the cultivating chemistry teaching ability-oriented integrated process pattern, and discussed building and implementation of the curriculum based on the chemistry teaching design course, the education practice mode to promote the development of teaching ability, and the mode of guiding research paper based on the practice orientation of integration in the whole process. It built and implemented in different phases, realizing the education teaching theory and concept, teaching practice and teaching research ability in spiral development paths. Good results have been achieved.
Application of Chemical Simulation in Teaching of Reactor Water Chemistry
The chemical reactions at high temperature and pressure concern the reliability of the equipment,the performance of the reactor,and the safety and durability of the nuclear power plant.However,there are many difficulties in conducting such experiments.With the help of PHREEQC program and the most recent thermodynamic database,the reaction models of H3BO3-LiOH ratio used and the precipitation of corrosion products generated in the primary circuit,as well as the pH control in the secondary circuit were established.The chemical simulations not only can help the students understand the relevant knowledge and enrich modern teaching methodology,but can be reference used for the training in the nuclear power enterprise.
Application of Open Project-Based Teaching in Practice Teaching of Materials Forming Specialty
The objective of engineering training and teaching reform is to culture college students' innovation ability,engineering consciousness and teamwork spirit.The project of typical production process was developed as the engineering training course for students majoring in chemical engineering,material engineering and environment engineering in Hunan University.Considering the characteristics and the existing issues of traditional engineering practice courses,the open project-based teaching mode was adopted.The teaching case,which closely followed the major's character,living practice and also the hotspots in social practice and research frontier,was designed elaborately.
Exploration and Implementation of Integrating Safety Education into Professional Practice of Chemical Engineering
The professional practice is an important part of the training for chemical engineering undergraduates.Due to the complex safety environment of chemical enterprises and deficient on-site experience of the students,students must be trained in the college and in the plant before they enter the manufacturing site.The college education of one week should integrate safety education into the chemical process closely through network learning platform,safety manuals and a variety of safety education activities.The college education adheres to basic safety knowledge including the process safety and living safety,and the education in the plant focuses on on-site emergency knowledge.Crossing teaching between safety knowledge and the process contributes to acquire the knowledge for the students.Network learning platform contributes to the communication between faculties and students,which expands their existing safety knowledge.Comprehensive safety manual contributes to master safety knowledge and regulate their own behavior.This paper offers a new method to integrate safety education into chemical industry practice.
Design and Application of Electric Potential in Generalized Acid-Base System
Theoretical Discussions on—RTlnKco=ΔrGmo(T,co)
Review of Empirical Studies on Chemistry Teachers' Pedagogical Content Knowledge (PCK)
Synthesis and Application of Organic Azo-Dye: An Introduction and Discussion of an Undergraduate Experiment Abroad
This paper attempted to introduce the synthesis of organic azo-dye as an undergraduate organic experiment popular abroad.Additionally,the synthesized azo-dye in this experiment could be used for the dyeing of different fiber materials, and some related questions were also discussed.The experiment design and procedure are meaningful to be introduced to Chinese undergraduate organic experiments.