Al - Balqa Applied University
Amman, Jordan

Al-Balqa` Applied University is a government-supported university located in Salt, Jordan, was founded in 1997, a distinctive state university in the field of Bachelor and Associate degree Applied Education, at the capacity of more than 21,000 student distributed into 10,000 at the Bachelor degree program and 11,000 at the Associate degree program. Wikipedia.

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Khraiwish Dalabeeh A.S.,Al - Balqa Applied University
Renewable Energy | Year: 2017

The aim of the present work is to develop a simple model to assess the capacity factor and predicted costs of wind energy in pre-selected five locations in Jordan. The simulation model is based on calculating the Weibull parameters and the annual electrical energy generated using different commercial types of wind turbine generators (WTG). For each site, detailed analysis was conducted using the developed model to calculate the capacity factor and the final unit cost of electricity (COE) for different types of commercial wind turbines. By merging final values of both factors, the best location and most suitable wind turbine could be defined. The estimated cost of electricity produced by wind energy ranged between 0.0259 and 0.0498 US$/kWh for the best site. While for other sites and wind turbine models, the cost may reach 0.2220 US$/kWh, which is still far less than those incurred in Jordan during 2013 using conventional thermal power plants firing diesel and/or heavy fuel oil. The obtained results are comparable with those published in the open literature for the Middle East region and worldwide. It is believed that such results could benefit not only researchers in this field but also policy makers, developers and investors planning to harness wind energy sources within the Middle East region. © 2016 Elsevier Ltd

Tedmori S.,Princess Sumaya University for Technology | Al-Najdawi N.,Al - Balqa Applied University
Information Sciences | Year: 2014

Lossless encryption methods are more applicable than lossy encryption methods when marginal distortion is not tolerable. In this research, the authors propose a novel lossless symmetric key encryption/decryption technique. In the proposed algorithm, the image is transformed into the frequency domain using the Haar wavelet transform, then the image sub-bands are encrypted in a such way that guarantees a secure, reliable, and an unbreakable form. The encryption involves scattering the distinguishable frequency data in the image using a reversible weighting factor amongst the rest of the frequencies. The algorithm is designed to shuffle and reverse the sign of each frequency in the transformed image before the image frequencies are transformed back to the pixel domain. The results show a total deviation in pixel values between the original and encrypted image. The decryption algorithm reverses the encryption process and restores the image to its original form. The proposed algorithm is evaluated using standard security and statistical methods; results show that the proposed work is resistant to most known attacks and more secure than other algorithms in the cryptography domain. © 2014 Elsevier Inc. All rights reserved.

Qaralleh H.,Al - Balqa Applied University
Bangladesh Journal of Pharmacology | Year: 2016

The marine sponge Neopetrosia contains about 27 species that is highly distributed in Indian Ocean, Atlantic Ocean (Caribbean Sea) and Pacific Ocean. It has proven to be valuable to the discovery of medicinal products due to the presence of various types of compounds with variable bioactivities. More than 85 compounds including alkaloids, quinones, sterols and terpenoids were isolated from this genus. Moreover, the crude extracts and the isolated compounds revealed activities such as antimicrobial, anti-fouling, anti-HIV, cytotoxic, anti-tumor, anti-oxidant, anti-protozoal, anti-inflammatory. Because only 9 out of 27 species of the genus Neopetrosia have been chemically studied thus far, there are significant opportunities to find out new chemical constituents from this genus. © 2016, Bangladesh Pharmacological Society. All rights reserved.

El-Amoush A.S.,Al - Balqa Applied University
Materials Chemistry and Physics | Year: 2011

The effect of annealing conditions producing various grain sizes on the intergranular corrosion behavior of high-strength aluminum alloy type 7075-T6 was investigated using electrochemical polarization techniques. Aluminum alloy specimens with large grain size exhibited lower breakdown potentials in deaerated 0.5 M NaCl solution. The breakdown potentials decreased with increasing grain size. Microscopic observations of the exposed surfaces during potentiostatic polarization testing showed that the coarse grain structure promotes intergranular crack growth. © 2010 Elsevier B.V. All rights reserved.

Lafi O.A.,Al - Balqa Applied University
Journal of Alloys and Compounds | Year: 2012

Differential scanning calorimeter (DSC), under non-isothermal condition, was used to study the glass transition kinetics and the crystallization mechanism of Se 90Cd 8Bi 2 and Se 90Cd 6Bi 4 glassy alloys. Two approaches, namely Moynihan and Kissinger, were used to calculate the relaxation activation energy (E t) from the dependence of the glass transition temperature (T g) on the heating rate (β). Results reveal that E t decreases with an increase in Bi content which indicates that thermal stability is improved. This is attributed to the formation of Se-Bi bonds which are stronger than Se-Cd bonds and heavily cross-link the structure. In addition, the kinetic analysis of the crystallization peaks was performed using Ozawa, Kissinger, Takhor and Augis-Bennett relations. The values of the crystallization activation energy (E c) and Avrami exponent (n) of the two alloys were evaluated. The obtained values of E c, calculated from the above mentioned relations, were found to be in good agreement while the average calculated values of Avrami exponent (n) are (2.3 ± 0.1) for Se 90Cd 8Bi 2 and (1.7 ± 0.1) for Se 90Cd 6Bi 4 which indicating that the crystal growth in the two alloys occurs in one dimension. © 2012 Elsevier B.V. All rights reserved.

Abu-Khader M.M.,Al - Balqa Applied University
Renewable and Sustainable Energy Reviews | Year: 2012

This study presents the advances in plate heat exchangers both in theory and application. It dresses the direction of various technical research and developments in the field of energy handling and conservation. The selected areas of heat transfer performance and pressure drop characteristics, general models and calculations change of phase; boiling and condensation, fouling and corrosion, and welded type plate heat exchangers and finally other related areas are highlighted. © 2012 Elsevier Ltd. All rights reserved.

Arundo donax reed grows in a natural ecosystem in Wadi Shueib in Jordan and is also grown in constructed wetlands built for domestic wastewater treatment. The utilization of leaves of excessive A. donax reed as an ecosystem bio-waste for the removal of Cd2+ from aqueous solutions was investigated. Effects of pH (3.5 to 7.5), contact time (10 to 360min), adsorbent dose (2.5 and 5gl-1), and adsorbate concentration (5 to 50mgl-1) at an ionic strength of 0.01M NaNO3 on adsorption efficiency and capacity were studied in batch adsorption experiments. Cadmium removal percentage of 92% occurred in 20mgl-1 Cd solutions at pH 5.5 containing 5gl-1 powdered leaves of A. donax. Cadmium removal percentage increased to 97% with decreasing the adsorbent dose to 2.5gl-1. The adsorption process was relatively fast and equilibrium was attained at 120min contact time. The equilibrium adsorption capacity of A. donax leaves increased from 1.96 to 18.80mgg-1 with increasing initial Cd concentration from 5 to 50mgl-1. The kinetic process of Cd2+ adsorption onto leaves of A. donax obeyed the pseudo-second-order kinetic model (R2>0.9995) indicating that chemisorption is the rate-limiting step. Although Freundlich and Langmuir isotherm models described well the experimental data, equilibrium isotherm data were best described by Freundlich model (R2 0.990 and 0.978, respectively). The monolayer adsorption capacity was 27.9mgg-1. A. donax leaves can be potentially used as a raw material of low cost eco-biosorbent for treating Cd-contaminated water systems. © 2014 Elsevier B.V.

Odibat Z.M.,Al - Balqa Applied University
Mathematical and Computer Modelling | Year: 2010

Variational iteration method has been widely used to handle linear and nonlinear models. The main property of the method is its flexibility and ability to solve nonlinear equations accurately and conveniently. In this paper, we present an alternative approach of the method then we study the convergence of the method for nonlinear differential equations. Our emphasis is to address the sufficient condition for convergence and the error estimate. Simple approaches of variational iteration method to nonlinear ordinary, partial and fractional differential equations are presented and the convergence results are briefly discussed. Some examples are investigated to verify convergence results and to illustrate the efficiency of the method. The basic ideas described in this paper are expected to be further employed to handle nonlinear models. © 2010 Elsevier Ltd. All rights reserved.

Omar S.S.,Al - Balqa Applied University
Journal of Toxicology and Environmental Health - Part A: Current Issues | Year: 2012

This study was undertaken to determine the presence of aflatoxin M1 (AFM1) in animal milk. In addition, exposure of infants to aflatoxin M1 (AFM1) and lactating mothers to aflatoxin B1 (AFB1) was examined using AFM1 in breast milk as a biomarker for exposure to AFB1. In total, 100 samples of fresh animal milk and fermented milk (buttermilk) and 80 samples of human breast milk were collected during the period 2011-2012. An enzyme-linked immunosorbent assay (ELISA) was used for the analysis of milk samples. AFM1 was detected in all animal fresh and fermented milk samples. The concentrations of AFM1 in 70 samples of fresh and fermented milk were higher than the maximum tolerance limit accepted by the European Union and the United States of 50 ng/kg. In human milk samples the average concentration of AFM1 was higher than the maximum tolerance limit accepted by the European Union and the United States of 25 ng/kg. Logistic regression analysis failed to show a correlation between AFM1 and type and amount of dairy consumption, vegetables, fruits, and meat. However, an association between AFM1 and cereal consumption was detected. This study is the first to report on the occurrence of AFM1 in milk consumed by the Jordanian population. © 2012 Copyright Taylor and Francis Group, LLC.

Odibat Z.,Al - Balqa Applied University
Nonlinear Analysis: Real World Applications | Year: 2012

The dynamic behaviors of fractional order systems have received increasing attention in recent years. This paper addresses the reliable phase synchronization problem between two coupled chaotic fractional order systems. An active nonlinear feedback control scheme is constructed to achieve phase synchronization between two coupled chaotic fractional order systems. We investigated the necessary conditions for fractional order Lorenz, Lü and Rössler systems to exhibit chaotic attractor similar to their integer order counterpart. Then, based on the stability results of fractional order systems, sufficient conditions for phase synchronization of the fractional models of Lorenz, L and Rössler systems are derived. The synchronization scheme that is simple and global enables synchronization of fractional order chaotic systems to be achieved without the computation of the conditional Lyapunov exponents. Numerical simulations are performed to assess the performance of the presented analysis. © 2011 Elsevier Ltd. All rights reserved.

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