Al-Hussein Bin Talal University is a public coeducational university located in the heart of the southern region, 210 km from the Capital Amman.about 9 km to the northwest of Ma'an city in the southern region of Jordan. It was established by a Royal Decree on April 28, 1999. AHU is a comprehensive public university in a self-contained campus, and has student population representing nearly every Governorate in Jordan. over the past years, AHU has grown to eight colleges offering bachelor degree programs in natural and environmental science, business, nursing, education, humanities, IT and engineering; and two Deanships, the Deanship of Student Affairs and the Deanship of Scientific Research. AHU has nine scientific centers that are heavily engaged in research and development projects to serve local and national communities. Wikipedia.
Al-Hamamre Z.,University of Jordan |
Hararah M.A.,Al - Hussein Bin Talal University
International Journal of Hydrogen Energy | Year: 2010
In this study thermodynamics and kinetics analysis of the thermal partial oxidation (TPOX) of ethanol for producing hydrogen is performed. Equilibrium and kinetics calculations are performed in order to find the limiting parameters for the thermal partial oxidation. The effects of air ratio λ (the ratio of the oxidizer -to- fuel ratio to the stoichiometric oxidizer -to- fuel ratio) and mixture inlet temperatures (Tmix-in) on the reforming efficiency, the H2 mole number, the reaction progress, the equilibrium time and the ignition delay time are investigated. Furthermore, the analysis is performed using different kinetics schemes and the results are compared. The optimum practical operating conditions of the partial oxidation process of ethanol are identified. In this way, the results of this work can be useful as a guideline in experimental work. It is found that the reforming efficiency increases with increasing the process temperature for λ < 0.3 and remains nearly constant elsewhere. The efficiency reaches a maximum value of 90% at λ = 0.20 and Tmix-in ≥ 1000 K. The kinetics simulations suggest that three different regions exist during the partial oxidation process of ethanol: the oxidation region, the water gas shift reaction- reforming region and the reforming region. The reforming reactions in the 3rd region are the reaction process limiting step. Additionally, it is found that the equilibrium concentration of a given species is not affected by the pressure when the process temperature lies outside the range of 500 K < Tprocess < 1700 K. However, the minimum time required for a given species to reach the equilibrium is affected when pressures higher than 1 atm are employed. Pressures higher than 1 atm shift this minimum time towards lower values. Due to preheating limitations (self ignition and reactor material stability) and the kinetics behavior of the TPOX process of ethanol, practical operating conditions could be bounded in λ range of 0.4 to 0.45 and Tmix-in range of 650 K to 850 K. © 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
Altaif K.I.,Al - Hussein Bin Talal University
Asian Pacific Journal of Tropical Disease | Year: 2011
Objective: To determine the prevalence of parasitic infection among the population of Ma'an governorate. Methods: A retrospective analysis of laboratory records of stool specimens of patients seen in Ma'an hospital (in different specialties) during the period of 1 January 2009 to 31 December 2009 was carried out for the detection of intestinal parasites. Results: The total number of stool samples in the survey examined in this retrospective study was 1 999, and the number and percentage of positive samples were 338 and 16.9%, respectively. The highest incidence of intestinal parasites was during summer months (June-October), while the lowest incidence was during winter months (December-January). Six different parasitic species were detected. The highest frequency was among males both adult and children and was higher in adult males and females than children (male and female). Entamoeba histolytica and Giardia lamblia (80.7% and 15.7%, respectively) were the commonest species detected while Entrobius vermicularis (0.9%), Strongyloides stercoralis (0.6%), and hookworms (0.9%) were the least common. Conclusions: The results indicate that intestinal parasites in Ma'an governorate (south of Jordan) is not a major public health problem. Nevertheless, a comprehensive health education program and improvements to environmental sanitation should be developed to keep this health problem under control. © 2011 Asian Pacific Tropical Medicine Press.
Al-Wardat M.A.,Al - Hussein Bin Talal University
Astrophysical Bulletin | Year: 2014
Atmospheric modeling and dynamical analysis of the components of the speckle interferometric binary system HD 6009 were used to estimate their individual physical and geometric parameters. Model atmospheres were constructed using a grid of Kurucz’s solar metallicity blanketed models and used to compute the individual synthetic spectral energy distribution (SED) for each component separately. These SEDs were combined together to compute the entire SED for the system from the net luminosities of the components A and B located at a distance d from the Earth. We used the modified feedback parameters and the iteration method to get the best fit between the synthetic and observed total SEDs. The physical and geometric parameters of the system’s components were derived as Teff A = 5625 ± 75 K, Teff B = 5575 ± 75 K, log gA = 3.75 ± 0.25, log gB = 3.75 ± 0.25, RA = 2.75 ± 0.30R⊙, RB = 2.65 ± 0.30 R⊙,MA = 1.60 ± 0.20 M⊙, MB = 1.46 ± 0.20 M⊙, LA = 15.84 ± 1.60 L⊙, and LB = 15.83 ± 1.60 L⊙, with G6 spectral types for both components. © Pleiades Publishing, Ltd. 2014.
Al-Zboon K.,Al - Balqa Applied University |
Al-Harahsheh M.S.,Al - Hussein Bin Talal University |
Hani F.B.,Al - Balqa Applied University
Journal of Hazardous Materials | Year: 2011
The aim of this work was to synthesis highly amorphous geopolymer from waste coal fly ash, to be used as an adsorbent for lead Pb(II) removal from aqueous wastewater. The effect of various parameters including geopolymer dosage, initial concentration, contact time, pH and temperature on lead adsorption were investigated. The major components of the used ash in the current study were SiO2, Al2O3 and Fe2O3 representing 91.53wt% of its mass. It was found that the synthesized geopolymer has higher removal capacity for lead ions when compared with that of raw coal fly ash. The removal efficiency increases with increasing geopolymer dosage, contact time, temperature, and the decrease of Pb2+ initial concentration. The optimum removal efficiency was obtained at pH 5. Adsorption isotherm study indicated that Langmuir isotherm model is the best fit for the experimental data than Freundlich model. It was found also that the adsorption process is endothermic and more favorable at higher temperatures. © 2011 Elsevier B.V.
Owaidat M.Q.,Al - Hussein Bin Talal University
American Journal of Physics | Year: 2013
The effective resistance between two arbitrary lattice points in an infinite, face-centered cubic lattice network of identical resistors is calculated using the lattice Green's function method. Theoretical results have been verified experimentally by constructing actual finite networks of resistors. This problem could be useful in undergraduate courses (e.g., advanced mathematical methods course) and would provide a good example for introducing the concept of Green's function. © 2013 American Association of Physics Teachers.