effect of water gas shift reaction (co+h2o=co2+h2) on wustite reduction has been investigated by a transient, non-isothermal mathematical model based on grain model. in this model, wustite porous pellet is reduced using syngas, namely a mixture of hydrogen, carbon monoxide, carbon dioxide and water vapor. for this purpose, governing equations containing continuity equation of species and energy...

The kinetics of grain growth in two-dimensions (2-D) were investigated by computer simulations based on a continuum diffuse-interface field model. In this model, a polycrystalline microstructure is described by many orientation field variables whose temporal and spatial evolutions can be obtained by solving the time-dependent Ginzburg-Landau (TDGL) equations. It is found that the time dependenc...

Grain-aligned composite Terfenol-D was fabricated via unidirectional solidification, followed by the infiltration of epoxy. The fraction of the RFe2 phase in composite Terfenol-D depends on the iron/rare earth RE=Tb,Dy ratio of the as-grown Terfenol-D and the direction of the RFe2 phase in the as-grown Terfenol-D changes from 110 to 111 with an increasing iron/rare earth ratio. For a series of ...

Sorghum grain is an important ingredient in poultry diets. The TMEn content of sorghum grain is a measure of its quality. As for the other feed ingredients, the biological procedure used to determine the TMEn value of sorghum grain is costly and time consuming. Therefore, it is necessary to find an alternative method to accurately estimate the TMEn content. In this study, 2 methods of regressio...

This paper addresses the problem of finding short cycles in the internal state space of shift register based stream ciphers.The existing Boolean Decision Diagram (BDD) based algorithms for finding cycles have limited capacity due to the excessive memory requirements of BDDs. The simulation-based algorithms can be applied to larger instances, however, they cannot guarantee the detection of all c...