Modelling a Calciner with High Inlet Oxygen Concentration for a Calcium Looping Process

f/sla from learner perspectives: a social activity or a cognitive process

in the past couple of decades sociocultural theory of sla and its implications in efl contexts have attracted attentions of research circles worldwide and aroused some controversies. firth and wagner (1997) have questioned the principles of the cognitive view which gives importance to mental constructs in favor of sociocultural view which highlights social and contextual constructs. but if soci...

Process and Reactor Level Simulations of Calcium Looping Combustion

Membrane-inlet mass spectrometry reveals a high driving force for oxygen production by photosystem II.

Oxygenic photosynthesis is the basis for aerobic life on earth. The catalytic Mn(4)O(x)CaY(Z) center of photosystem II (PSII), after fourfold oxidation, extracts four electrons from two water molecules to yield dioxygen. This reaction cascade has appeared as a single four-electron transfer that occurs in typically 1 ms. Inevitable redox intermediates have so far escaped detection, probably beca...

A Calculus of Looping Sequences for Modelling Microbiological Systems

The paper presents a new calculus suitable to describe microbiological systems and their evolution. We use the calculus to model interactions among bacteria and bacteriophage viruses, and to reason on their properties.

a new type-ii fuzzy logic based controller for non-linear dynamical systems with application to 3-psp parallel robot

abstract type-ii fuzzy logic has shown its superiority over traditional fuzzy logic when dealing with uncertainty. type-ii fuzzy logic controllers are however newer and more promising approaches that have been recently applied to various fields due to their significant contribution especially when the noise (as an important instance of uncertainty) emerges. during the design of type- i fuz...