in the computational fluid dynamics (cfd) modeling of gas-solids two phase flow, the effect of boundary conditions play an important role in predicting the hydrodynamic characteristics of fluidized beds. in this work, the hydrodynamics of conical fluidized bed containing dried tio2 nano-agglomerates were studied both experimentally and computationally. the pressure drop was obtained by pressure...

This paper presents literature search outcomes concerning computer-assisted teaching and learning of physics and its efficiency, informs about translation and customization of PhET physics applets and introduces new database of links related to physics and physics education which should serve mainly to physics teachers.

Understanding and managing an ecosystem without knowledge of circulation patterns and hydrography would be like trying to diagnose a patient without taking their pulse and temperature. In order to improve our understanding and prediction of ecosystem dynamics, we must improve our knowledge of the processes and mechanisms that link changes in the physical environment to biological variability. T...

Transient regimes arise when the propeller of a ship is operating in extreme seas, where ventilation and in-and-out of water effects results in loss of propeller thrust. By introducing Lyapunov based controller state reset, the performance in transient regimes may be increased without influencing the performance in calm seas. Improvements have been presented previously for dynamically positione...

Background: Various variance reduction techniques such as forced detection (FD) have been implemented in Monte Carlo (MC) simulation of nuclear medicine in an effort to decrease the simulation time while keeping accuracy. However most of these techniques still result in very long MC simulation times for being implemented into routine use. Materials and Methods: Convolution-based force...