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Baghdad, Iraq

The Iraqi University offers bachelor's and graduate university degrees. It is located in the Adhamiyah district of Baghdad, Iraq. It was founded in 1989 and was formerly named the Islamic University. In 2010, the university council recommended that the name be changed to Iraqi University.The university accepts students from all over the Islamic world.The Ministry of Higher Education and Scientific Research says that the university celebrate science and knowledge in Iraq. The Iraqi University offers degrees in science, humanities, applied medicine, engineering, media and arts, law, education, and other subjects. Wikipedia.

Adham A.M.,Iraqi University
International Review of Mechanical Engineering | Year: 2013

In this paper, the optimization of a nanofluid-cooled microchannel heat sink was reported. Al2O3-NH3 with three different volume fractions (1 %, 3 % and 5 %) was examined. An optimization scheme which is comprised of two objective functions (thermal resistance and pumping power) and the elitist non-dominated sorting genetic algorithm (NSGA-II) was employed to optimize the overall performance of the considered system. Under the same operating conditions, the ammonia-base nanofluid (Al2O3-NH3) exceeded other coolants (Al2O3-H2O and H2O) in terms of the required pumping power (0.144, 1.015 and 0.94 W for Al2O3-NH3, Al2O3-H2O and H2O, respectively). When the refrigerant base nanofluid is used as a cooling fluid, a lighter heat sink was produced. Finally, more studies should be dedicated to explore this nanofluid and the possibility of considering it for electronic systems cooling. © 2013 Praise Worthy Prize S.r.l. - All rights reserved. Source

Lebedenko T.N.,Kharkov National University of Radio Electronics | Simonenko A.V.,University of Kharkiv | Arif F.A.R.,Iraqi University
Modern Problems of Radio Engineering, Telecommunications and Computer Science, Proceedings of the 13th International Conference on TCSET 2016 | Year: 2016

The paper presents the flow-based queue management model on telecommunication networks routers based on optimal flow aggregation and packets distribution in queues. The novelty of the model is that with flows distribution in queues it is carried out its aggregation based on flows and queues classes comparison within the analysis of the set of classification indicators. © 2016 National University Lviv Polytechnic. Source

Abdulwahd M.N.,Iraqi University
2015 2nd International Scientific-Practical Conference Problems of Infocommunications Science and Technology, PIC S and T 2015 - Conference Proceedings | Year: 2015

Solution of actual scientific and practical problem associated with the development of flow-based model of multipath routing with traffic policing rejection balancing was presented. Within the proposed model consistent solution of problem of multipath routing with traffic policing rejection balancing converged to solution of optimization problem of linear programming with the optimality criterion as minimum of dynamically managed upper bound of rejections for all flows in a whole network. Numerical examples of multipath routing with traffic policing rejection balancing problem solving confirmed the adequacy and effectiveness of the proposed solution. Investigation of processes of multipath routing with traffic policing rejection balancing using the proposed model showed that the flow rate restriction on the network edge has an adaptive nature. © 2015 Kharkiv National University of Radioelectronics. Source

Thamer N.A.,Iraqi University | Almashhedy L.A.,University of Babylon
International Journal of Pharma and Bio Sciences | Year: 2014

Green chemistry means utilization of various plant resources for the synthesis of metallic nanoparticles. In the present study silver nanoparticles was synthesized in a single step by a green biosynthetic method using an extract of Crocus Sativus L act as a reducing and capping agents. The nanoparticles were characterized usingUV-Vis, Xray diffraction (XRD) and Dynamic light scattering (DLS) .The prepared silver nanoparticles(AgNPs) showed surface Plasmon resonance centered at 440 nm. The XRD pattern showed the face centered cubic structure of silver nanoparticles. The size rangefrom19.9nm to 28.1nm was determined by using laser particle size analyzer. The current research work investigates the findings of optimization of different experimental variable conditions like time,temperature,reaction pH, silver nitrate concentration and the mixing ratio of the reactants on silver nanoparticles synthesized. The optimized condition for the synthesis of silver nanoparticles revealed that silver nitrate concentration was 1 mM, temperature was70°C, PH was 9, incubation time 1 h and aqueous extract and silver nitrate ratio was 5:95. Source

Adham A.M.,Iraqi University | Mohd-Ghazali N.,University of Technology Malaysia | Ahmad R.,University of Technology Malaysia
Journal of Engineering Thermophysics | Year: 2015

In this paper, a feasible optimization scheme for rectangular microchannel heat sinks, which incorporates the thermal resistance model and the Improved Strength Pareto Evolutionary Algorithm (SPEA2), is reported. An alternative coolant, namely, ammonia gas, is used to improve the overall thermal and hydrodynamic performances of the considered system. Results from the optimization showed significant reduction in the total thermal resistance compared to the conventional air-cooled systems up to 35% for the same allowable pumping power. The SPEA2 exhibited excellent performance when it was compared to another multiobjective algorithm, NSGA2. The results reported in this study open the door for the incorporation of some other algorithms, which have not been used in the optimization of microchannel heat sinks. Finally, the outcome of this paper predicts a promising future for the usage of ammonia gas in the area of electronics cooling. © 2015, Pleiades Publishing, Ltd. Source

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