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Effect of hydrogen combustion reaction on the dehydrogenation of ethane in a fixed-bed catalytic membrane reactor
, Article Chinese Journal of Chemical Engineering ; Volume 23, Issue 8 , August , 2015 , Pages 1316-1325 ; 10049541 (ISSN) ; Malakootikhah, M ; Rahmanian, V ; Yaghmaei, S ; Sharif University of Technology
Chemical Industry Press
2015
Abstract
A two-dimensional non-isothermal mathematical model has been developed for the ethane dehydrogenation reaction in a fixed-bed catalytic membrane reactor. Since ethane dehydrogenation is an equilibrium reaction, removal of produced hydrogen by the membrane shifts the thermodynamic equilibrium to ethylene production. For further displacement of the dehydrogenation reaction, oxidative dehydrogenation method has been used. Since ethane dehydrogenation is an endothermic reaction, the energy produced by the oxidative dehydrogenation method is consumed by the dehydrogenation reaction. The results show that the oxidative dehydrogenation method generated a substantial improvement in the reactor...
Multi-Sensory Balance Board for Children with SPD & ADHD Disability
, M.Sc. Thesis Sharif University of Technology ; Selk Ghafari, Ali (Supervisor) ; Zabihollah, Abolghasem (Co-Supervisor)
Abstract
Nowadays, as technology grows, human life formation changes every single second. These changes sometimes create harmful habits and effects on our lifestyle, which unfortunately brings various types of disabilities and disorders. SPD (Sensory Processing Disorder) and ADHD (Attention Deficit Hyperactivity Disorder) are common disorders in children and usually show themselves in younger ages. The cause of these disorders is not unique and multiple factors can lead it. Fortunately, they can be easily treated by considering the appropriate treatments. Research that has been performed on any treatment device available for children with SPD and ADHD disorder shows that the sense of balance has not...