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Ra's al Khaymah, United Arab Emirates

Akash B.,American University of Ras Al Khaimah
Procedia Computer Science | Year: 2015

Biomass is considered as a clean source of renewable energy, utilization of biomass may reduce the environmental pollutions. This paper presents a review of the chemistry and process of depolymerization of biomass; which results in production of oil and gaseous fuels from such important renewable energy source. Also, thermal hydro-cracking of lignin enhances coal liquefaction by producing intermediates which then react further with coal producing lower molecular weight material, which more desirable. Enhancement of coal conversion due to the addition of lignin is found to be a function of time. It is dependent upon temperature of reaction and the type of lignin used. By increasing the ratio of lignin to coal will result in deploymerizing larger portions of coal. This indicates that it can be used as a catalyst in liquefaction of higher molecular weight of hydrocarbon solid fuels such as coal and heavy petroleum fuels. © 2015 The Authors. Published by Elsevier B.V. Source


Assaf H.,American University of Ras Al Khaimah
Nature Environment and Pollution Technology | Year: 2015

This paper provides an analysis of a major river ice breakup on the Peace River in Canada, which led to the flooding of the Town of Peace River on February 28, 1992. The event is unique, as it occurred in the mid-winter under regulated river conditions with no clear explanation of its cause, and despite the implementation of extensive mitigation measures. Investigative analysis of weather and river flow conditions in the Peace River region, prior to and during this flooding event, provides clues to the possible causes of the breakup. These clues could be used to predict similar events in the future with sufficient lead time to avert the occurrence of the ice jam flooding. © 2015, Technoscience Publications. All rights reserved. Source


Khodr M.,American University of Ras Al Khaimah
Research Journal of Applied Sciences, Engineering and Technology | Year: 2015

Recently lead salts quantum well lasers which exhibit strong quantum optical effects, have been used to fabricate infrared diode lasers with wide single-mode tunability, low waste heat generation and large spectral coverage up to about 10 μm. Based on the energy dependent effective mass method, a theoretical model was developed to study the effects of band non parabolicty and temperature on the tunability of IV-VI PbSe/Pb0.934 Sr0.066 Se laser system. This study will show the effects of temperature as a function of well width on the emitted wavelength. Moreover, it will be shown that the effects of non parabolicity on the energy levels can't be ignored in the nano range well width. © Maxwell Scientific Organization, 2015. Source


Akash B.A.,American University of Ras Al Khaimah
Research Journal of Applied Sciences, Engineering and Technology | Year: 2015

This study presents experimental investigation of combustion of diesel fuel, kerosene and their blends. The objective of this study is to determine the combustion performance and gas emission of diesel fuel, kerosene and various mixtures of diesel fuel and kerosene in a horizontally positioned cylindrical furnace. Heat was removed from the system by the use of water around a jacket of the combustion unit. The combustion unit is capable of burning most types of liquid and gaseous hydrocarbon fuels. Results on combustion performance and gas emissions are presented for a wide range of air-fuel equivalence ratios. The results of exhaust gas analyses of carbon monoxide, carbon dioxide and oxygen are presented. Combustion efficiency and the effect of blending of fuels on its performance are also presented. In general, some improvements in exhaust gas emission and combustion efficiency were obtained upon using mixtures of fuels. The best results were obtained when a fuel blend of 75% kerosene and 25% diesel was prepared and burned in the unit. © Maxwell Scientific Organization, 2015. Source


Maalaoui A.,American University of Ras Al Khaimah
Advanced Nonlinear Studies | Year: 2016

In this paper we study the dynamics of the third exotic contact form of Gonzalo and Varela [5] on S3 in the framework of contact form geometry. This dynamics has an impact on the variational problem associated to the contact form such as the violation of the Fredholm condition and the Morse indices of different periodic orbits. © 2016 by De Gruyter. Source

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