Година XXV, Книжка 2, 2016Следващ бройАрхивПредишен брой
Учебен експеримент в природните науки
ACID MODIFIED BABY POWDER BASED TALK – A SORBENT MATERIAL FOR THIN-LAYER CHROMATOGRAPHY
Baby powder based talc (BP) is modified by keeping in 0.3 M HCl solution at room temperature for 24 hours. The product, acid modified baby powder based talc, is called “modified-BPT”. Modified-BPT is investigated for their usefulness in the stationary phase o...
analytical chemistry, TLC, baby powder , modi fied baby powder talc, chromatography
THE NOVEL METHODS OF POLYMERIZATION AT HAND
In this account, the newly discovered methods of polymerization are briefly presented. Glances of their emergence, their characteristic features, their proposed mechanisms, and a few of their applications and uses are herein highlighted.
catalyst, click, fragmentation, iodine, metathesis, polycondensation, polymerization, transfer
Новата информационна среда
CONTEXT-BASED CHEMISTRY LAB WORK WITH THE USE OF COMPUTER-ASSISTED LEARNING SYSTEM
The paper aims to show how the context-based approach can be applied to teaching the analytical chemistry course to the university students with major in food processing technology and food expertise. The article describes the principles that underlie the cont...
context-based learning, information technology, lab work, food safety, chemical analysis of food products.
VARIATION DEGREE IN E-LEARNING COURSES: ASSESSMENT THROUGH FEATURE MODELS
The current paper presents a model for assessing e-learning courses through the application of quantitative methods based on feature oriented domain analysis. The approach gives an opportunity to assess: 1) the variation degree of electronic courses speci fi...
e-learning courses, variation degree, functional models