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Jeddah, Saudi Arabia

Messaoud I.B.,University of Sfax | Feki J.,Jeddah University | Zurfluh G.,University Of Toulouse 1
Communications in Computer and Information Science | Year: 2015

Documents represent an interesting source for decisional analyses. They help decision makers to better understand the evolution of their business activities. Therefore, they merit to be warehoused for decision purposes within organizations. Generally, these documents exist in XML format and are described by multiple structures. In this paper, we present a semi-automatic approach to build the XML Document Warehouse. This approach is made up of two methods namely: Unification of structures of XML Structures, and Multidimensional modeling. More specifically, this paper focuses on the experiment and evaluation of the proposed approach for warehousing document-centric XML documents. © Springer International Publishing Switzerland 2015.

Albishri H.M.,King Abdulaziz University | El Deeb S.,TU Braunschweig | El Deeb S.,Al - Azhar University of Gaza | Algarabli N.,Al - Azhar University of Gaza | And 5 more authors.
Bioanalysis | Year: 2014

The present review covers recent advances and important applications of affinity capillary electrophoresis (ACE). It provides an overview about various ACE types, including ACE-MS, the multiple injection mode, the use of microchips and field-amplified sample injection-ACE. The most common scenarios of the studied affinity interactions are protein-drug, protein-metal ion, protein-protein, protein-DNA, protein-carbohydrate, carbohydrate-drug, peptide-peptide, DNA-drug and antigen-antibody. Approaches for the improvements of ACE in term of precision, rinsing protocols and sensitivity are discussed. The combined use of computer simulation programs to support data evaluation is presented. In conclusion, the performance of ACE is compared with other techniques such as equilibrium dialysis, parallel artificial membrane permeability assay, high-performance affinity chromatography as well as surface plasmon resonance, ultraviolet, circular dichroism, nuclear magnetic resonance, Fourier transform infrared, fluorescence, MS and isothermal titration calorimetry. © 2014 Future Science Ltd.

Hammami S.M.,King Saud University | Chtourou S.,Institute Superieur Of Gestion Of Tunis Isg | Triki A.,Jeddah University
Renewable and Sustainable Energy Reviews | Year: 2016

By adopting an abductive logic where we iteratively synthesize existing theory and field work, and by apprehending the Sidi Daoud wind park case from a social perspective, a comprehensive model is proposed in terms of input, process and output and hinging around the pivotal role of community acceptance construct which is believed to enrich our understanding of how local residents form their responses to the implantation of a renewable energy project and to account for differences in its outcome, i.e, in terms of success or failure. © 2015 Elsevier Ltd. All rights reserved.

Mahmoud M.E.,Alexandria University | Yakout A.A.,Alexandria University | Yakout A.A.,Jeddah University | Saad S.R.,Alexandria University | Osman M.M.,Alexandria University
Desalination and Water Treatment | Year: 2015

Potassium permanganate is commonly used in multidiscipline processes as a strong oxidizing agent for oxidative treatment of a great number of organic and inorganic compounds. In this work, a method is proposed for removal of KMnO4 from aqueous solutions and real water samples using treated and activated carbon (AC) sorbents with sulfuric acid. The potential applications of five modified AC sorbents for removal of KMnO4 were explored under different experimental controlling factors including pH, contact time, initial concentration of KMnO4, sorbent dosage, and competing ions by the batch equilibrium technique. The removal values of KMnO4 were found to be ≥99.56% in the examined solutions (pH 1.0–7.0). In pH 1.0–2.0, KMnO4 removal from aqueous solutions was found to proceed by an anion exchange and ion pair interaction mechanisms, while in pH ≥ 3.0–7.0, the uptake of KMnO4 was identified to take place by an initial surface reduction step for the formation of Mn(II) ion and followed by adsorption via a direct complex formation with the AC surface functional groups. The proposed method confirmed an efficient removal of ≥99% of residual KMnO4 from industrial wastewater, seawater, and drinking water in laboratory trials. © 2015 Balaban Desalination Publications. All rights reserved.

Mahmoud M.E.,Alexandria University | Yakout A.A.,Alexandria University | Yakout A.A.,Jeddah University | Abed El Aziz M.T.,Alexandria University | And 2 more authors.
Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering | Year: 2015

In this work, dioctyl phthalate (Dop) was used as a highly plasticizing material to coat and link the surface of basic cellulose (Cel) with baker's yeast for the formation of a novel modified cellulose biosorbent (Cel-Dop-Yst). Characterization was accomplished by Fourier Transform Infrared Spectroscopy (FT-IR), Thermogravimetric analysis (TGA) and Scanning Electron Microscope (SEM) measurements. The feasibility of using Cel-Dop-Yst biosorbent as an efficient material for removal of Co(II), Cu(II), Cd(II), Hg(II) and Pb(II) ions was explored using the batch equilibrium technique along with various experimental controlling parameters. The optimum pH values for removal of these metal ions were characterized in the range of 5.0-7.0. Cel-Dop-Yst was identified as a highly selective biosorbent for removal of the selected divalent metal ions. The Cel-Dop-Yst biosorbent was successfully implemented in treatment and removal of these divalent metal ions from industrial wastewater, sea water and drinking water samples using a multistage microcolumn technique. © 2015 Copyright Taylor & Francis Group, LLC.

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