Browsing by Author "Khelfaoui, Mohamed El Amine"

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    Diversity of Culturable Halophilic Archaea and Bacteria from Chott Tinsilt and El Malah Salt-Lake in Algeria
    (Science publications, 2020) Akmoussi-Toumi, Siham; Khemili-Talbi, Souad; Kebbouche-Gana, Salima; Lenchi-Izouine, Nesrine; Khelfaoui, Mohamed El Amine; Sayah, Amna; Bouarab, Ghania; Ferrioune, Imen; Mokhtari, Wafa; Najjari, Afef
    At the limits of life, hyper-saline aquatic ecosystems; Chott and Sebkha are a model of choice of extreme environments, housing a halophilic microflora that had to adapt to these conditions. In Algeria, these ecosystems are poorly studied. However, our study was carried out on the waters of Chott Tinsilt and Sebkha El Malah. The study of this microflora revealed the presence of a significant morphological, physiological and metabolic diversity. The molecular study allowed us to access to a phylogenetic affiliation including an Archean Species (ATS1) and 7 bacterial species (A1, A2, A3, A4, B1, B4, B5). The results showed that these isolates were related to the genera Haloferax (for the strain ATS1) and Halomonas (strains A1, A2 and A4), Staphylococcus (strain A3), Salinivibrio (strain B1), Planococcus (strain B4) and Halobacillus (strain B5). Most isolates produced hydrolases at high salt concentrations. The Production yields obtained are very promising for applications in the biotechnology and industrial microbiology.
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    Réalisation du réseau de collecte et ouvrages concentrés des champs de "ohanet" (produit : gaz naturel)
    (Université M’Hamed Bougara Boumerdes : Faculté de Technologie, 2021) Sebbane, Aboubakeur; Khelfaoui, Mohamed El Amine; Ifrah, Rachid(Promoteur); Latreche, Djamel(Co-Promoteur)
    Le Projet "OHANET" consiste principalement en la réalisation de:Installations de surface de cinquante (50) puits de gaz brut;Douze (12) manifolds;Un (01) manifold d'entrée au CPF gaz existant à Ohanet; Un réseau de collecte constitué de flowlines et trunklines d'une longueur totale de 328 Km;L'étude vise à: Calculer les épaisseurs et les diamètres de réseau de collecte et les ouvrages concentrés (puits_manifold) est faite selon le code ASME;Calculer les pertes de charges (linéaires et singulière) est faite par les logiciels (pipe sim et pipe phase);étude de stress par logiciel Caesar II