DIDACTICAL PRINCIPLES OF CONCEPT FORMATION IN PHYSICS

‏‎suppression of coke formation in thermal cracking by coke inhibitors‎‏

‏‎the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...

Force-field Tailoring: First-principles Derivation of Wall Formation Physics

Long-term human habitation in space requires the ability to use extraterrestrial materials to build massive radiation-shielded artificial-gravity stations. The technology of Tailored Force Fields promises to enable formation of desired shapes from multidisperse construction material in microgravity. Briefly, this technology is based on the flight test result that solid particles placed in a res...

Description and evaluation of a didactical concept for online seminars

We first describe the didactics of eight online courses. Each seminar mostly consists of 14 modules, which are essentially worked through in linear sequence, each module normally within a week. Didactics combine imparting of knowledge by direct instruction according to the nine instructional steps by Gagné, Briggs and Wager (1988) and an avoidance of ‘sluggish’ knowledge via stimulation of lear...

simulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Concept Formation 1 Concept Formation