Production  Scientifique de l'Université Kasdi Merbah Ouargla

Auteurs Titre Résumé Téléchargement
01 Sarah Azzouz, Smaine Chellat, Chahrazed Boukhalfa, Abdeltif Amrane
Spatial evolution of phosphorus fractionation in the sediments of Rhumel River in the northeast Algeria The objective of the present study is the characterization of the spatial evolution of phosphorus forms in sediments of Rhumel River located in northeast Algeria during winter conditions. Sediments samples were collected along the river in Constantine city during the year 2012. The samples were subjected to physicochemical characterization and metals ... Lien
 We prove a cohomological property for a class of finite p-groups introduced earlier by M. Y. Xu, which we call semi-abelian p-groups. This result implies that a semi-abelian p-group has non-inner automorphisms of order p, which settles ... Lien
03 Hind Bouafia, Mourad Korichi Thermodynamic Study of Solvents Type Ionic Liquids: Application in the Substitution of Polluted Solvents Ionic Liquids have been classed as alternatives solvents that offer possibilities to switch ordinaries chemical processes into clean and green technologies grace to theirs favorable physicochemical properties, such as their non volatility in the atmosphere. Thermodynamic modeling of the liquid-liquid equilibria is very important for ... Lien
04 Boubekeur Dokkar, Nasreddine Chennouf, Abdelghani Dokkar, Abderrahmane Gouareh Low-energy power system for base transceiver station  This paper presents a comparative study of power supply systems for mobile phone stations. Base transceiver stations (BTS) are situated in South-eastern Algeria, mainly at neighboring of Ouargla city. In order to rationalize the energy consumption, three cooling methods are examined. The first is insured by mono-bloc air conditioning and a diesel ... Lien
05 Fouzi Abderzag, Balbal Hasnaoui The Impact of Financial Liberalization on the Stability of the  Financial System in Emerging Markets Many of the reforms appeared and have touched the economic and financial sector, perhaps the most important is the financial liberalization policy that have emerged since the seventies, which aims to ease the degree of restrictions on the financial system in order to enhance the level of efficiency and reform entirely, by opening the financial and capital markets to foreign companies in the fields of banks and insurance ... Lien
06 BOUBEKEUR DOKKAR, BELKHIR NEGROU, NASREDDINE CHENOUFF,  NOUREDDINE SETTOU, ABDESSLEM BENMHIDI Passive cooling of telecom shelter using solar chimney with  Earth-air heat exchanger   Passive ventilation systems are being increasingly proposed as an alternate to mechanical ventilation systems because of their potential benefits in terms of operational cost, energy requirement and carbon dioxide emission. This paper presents passive cooling system for base transceiver station (BTS) in neighboring Ouargla city (south of Algeria)... Lien
07 Y. Tamene, S. Abboudi, C. Bougriou Numerical study of the transient heat and moisture  transfer through the single and double walls In this work, a numerical study of a coupled transient heat and moisture transfer was realized. The program developed is simple compared with those developed by other researchers in the literature. We have exploited it, to compare the evolution of temperature and ... Lien
08 Mohamed Barara, Ahmed Abbou, Mohammed Akherraz, Taibi Djamel,   Abderrahim Bennassar1 Modeling and Control Voltage of Wind Pumping Systems using a Self Excited Induction Generator  Self-excited induction generators (SEIG) are mostly exploited in isolated areas to generate electrical energy. However, an isolated induction generator should have a control system that keeps the DC bus voltage at a constant value when the speed of the rotor and load are varied... Lien
09 Abd-el-Kader Benmenine, Mohamed Rida Ouahrani, Noureddine Gherraf, Mohamed lamine Sekirifa, Lotfi Baameur Anticorrosive Action Study of Retama Retam Extracts On Mild Steel X 52 in 20 % H2SO4 Solution  The effect of Retama retam extracts on the corrosion rates of mild steel X52 in 20% H2SO4 solution has been investigated at 25 C° by potentiodynamic polarization method. The maximum inhibition efficiency (%ȘPol) was approximately 95 %. As far as we know, the anticorrosive behavior of this plant has never been undertaken elsewhere. Lien
The electrons dynamics and the time autocorrelation function CEE(t) for the total electric microfield of the electrons on positive charge impu- rity embedded in a plasma are considered when the relativistic dynamic of the electrons is taken into account. We have, at first, built the effective potential gov- erning the electrons dynamics... Lien
11 BOUBEKEUR DOKKAR, NASREDDINE CHENNOUF, NOUREDDINE SETTOU,  BELKHIR NEGROU, ABDESSLAM BENMHIDI Analysis and optimization of PEM fuel cell biphasic model The optimal  operation of proton exchange  membrane fuel cell (PEMFC) requires good water management  which is presented under  two  forms  vapor  and liquid. Moreover, fuel cells have to reach higher output require integration of some accessories which need electrical power. In order to analyze fuel cells operation and different ... Lien
12 Bouhania Goui Algerian angst: can it agree on constitutional change? Algeria’s forthcoming constitutional amendments, first introduced by President Bouteflika in May 2014, have recently disappeared from public discussion and among the political elite, following a period of intense official political discourse that began prior to the presidential elections in April 2014... Lien
13 Laouini Salah Eddine, Ladjel Segni, Ouahrani Mohammed Ridha Optimization of Ultrasonic Extraction of Phenolic Compounds from Phoenix dactylifera L and Evaluation In Vitro of Antioxidant and Anti- inflammatory Activity The present study was undertaken on optimization extraction of phenolic compounds in the leaves of Ghars variety from  Phoenix dactylifera L by ultrasound assisted extraction (UAE) using ethanol, methanol, hexane and chloroform as the extraction solvent. This study investigated the influence of various parameters time (10, 20, 30, 40 and 50 min), temperature... Lien
14 Ouafa Mahma, Ahmed Korichi TOWARDS A NEW APPROACH OF DATA DISSEMINATION IN VANETS NETWORKS In the 2000s, ad hoc networks was developed and highly used in dynamic environment, particularly for inter- vehicular communication (VANETs : Vehicular Ad hoc Networks). 
Since that time, many researches and developments process was dedicated to VANET networks. This was motivated by the ...
15 GACEM Mohamed Amine, OULD EL HADJ-Khelil-Aminata, GACEMI Bouabdallah Evaluation of antifungal effect of organic extracts of Algerian Citrullus colocynthis seeds against four strains of Aspergillus isolate from wheat stored Anti-mycotic activity of the methanolic and aqueous extracts from Algerian Colocynth (Citrullus colocynthis L. Schrad) seed parts were screened in vitro against four important plant pathogenic fungi, namely, Aspergillus flavus, Aspergillus ochraceus, Aspergillus fumigatus and Aspergillus niger, using micro-dilution technique ... Lien
16 Brahim Brahimi, Zoubir Kenioua
Robust estimator of distortion risk premiums for heavy-tailed losses
We use the so-called t-Hill tail index estimator proposed by Fabi´an (2001), rather than Hill’s one, to derive a robust estimator for the distortion risk premium of loss. Under the second- order condition of regular variation... Lien
17 Laouini S Eddine, Ouahrani M Redha, Segni Ladjel Influence of solvent extraction on phenolic content, antioxidant and anti-inflammatory activities of aerial parts extract from Algerian Artemisia Herba-alba
Artemisia Herba-alba is a commonly consumed medicinal and culinary herb in Algeria. This current study aimed to obtain the proper solvent for extracting bioactive compounds from Artemisa Herba-alba guided by phenolic content, flavonoid content, proanthocyanidins, antioxi- dant and anti-inflammatory activity. The results showed that ethyl acetate extract of exhibited the highest phytochemical composition (total phenolic content 92.29±3.25 mg ... lien
18 C. Morcia, M. Mehani, N. Salhi, L. Nazari, A. Khelil, A. Bara, R. Ghizzoni, G. Tumino, V. Terzi On the role of natural compounds in mycotoxigenic fungi control Recent studies have shown the importance of natural plant products as fungicidal agents for crop protection. In fact, fungal pathogens associated with plant diseases account for great losses in crop production. Moreover, some phytopathogenic fungi are able to produce a wide ... Lien
19 Mohamed Lakhdar Belfar, Touhami Lanez, Abdekarim Rebiai, Zineb Ghiaba Evaluation of Antioxidant Capacity of Propolis Collected in Various Areas of Algeria Using Electrochemical Techniques The present study examined the antioxidant activity of methanolic extracts of propolis samples from different regions of Algeria. Total phenol content (TPC) was determined by using Folin-Ciocalteau Reagent. Total flavonoid content (TFC) was determined by using aluminum chloride method. Resulting ranged ... Lien
20 Aouragh Salima, Sbaa Salim, Taleb-Ahmed Abdelmalik A Survey of Approaches for Curve Based Facial Surface Representations For Three-Dimensional Face Recognition The majority of face recognition methods using three- dimensional data, either alone or in combination with two-dimensional intensity images are covered in existing survey papers. General 3D face representation has been extensively ... Lien
21 Taglout Ramdane, Said Bachir OWL Visual Notation and Editor In this paper a new visual notation of OWL-DL language is proposed. It is inspired from several studied notations and editors. The proposed notation is suitable for ontology visualization ... Lien
22 T. Zaiz,T.Lanez CORROSION INHIBITION OF CARBON STEEL XC70 IN H2SO4 SOLUTION BY FERROCENE DERIVATIVE4- (FERROCENYLMETHYLAMINE) BENZONITRILE In this work, we studied the efficiency of corrosion inhibition of carbon steel XC70 in H2SO4 0.5 M solution using ferrocenyl compound prepared in our laboratory, this compound is: 4- (ferrocenylmethylamine)benzonitrile (FC)... Lien
23 Soraya Abïoud, Salah Saouli Second Law Analysis of Viscoelastic Fluid over a Stretching Sheet Subject to a Transverse Magnetic Field with Heat and Mass Transfer This paper concerns the second law analysis of a viscoelastic fluid over a stretching sheet subject to a transverse magnetic field with heat and mass transfer. The velocity, temperature and concentration profiles are obtained analytically using Kummer’s functions... Lien
24 Hammadi Belkaçem, Bebba Ahmed Abdelhafid, Hacini Zineb, Zeghdi Saad Gardens planted with macrophytes filters, purification performance in an arid climate.  Pilot station of Témacine, Ouargla (Algeria). In this study, we are interested in evaluating the performance of a system for purifying wastewater by plants in an arid climate. The treated water is wastewater from domestic sources in the region of the old Ksar Temacine (Wilaya of Ouargla, South-East of Algeria). The results show good yields for organic and particulate ... Lien
25 F. Kadri, S. Drid,  F. Djeffal Direct Torque Control of Induction Motor Fed by Three-Level NPC Inverter Using Fuzzy Logic and Neural Network  multilevel voltage inverter has been receiving wide attention in research and high power applications. Compared with the traditional two-level voltage inverter, the main advantages of the multilevel inverter are a smaller ... Lien
26 Khemis Mohamed How Futurists Look to Uncertainty Phenomena? This study aims to explore the key assumptions within deferent scenario approaches toward uncertainties which might change the future dramatically, the future is neither uncertain nor linear, and knowing precisely what will happen in the future ... Lien
27 Amadou Haoua, A. Leonard,  B. Bouchekima Determination of desorption isotherms using the DVS apparatus (dynamic vapor sorption system) at different temperatures on unblanched and blanched samples of potato Knowledge of the evolution of thermo-physical parameters of food especially desorption isotherms is necessary for the quality control of the finished product by facilitating its conservation. The objective of this work is to determine in a first phase of desorption isotherms of potato on blanched and unblanched samples at different... Lien
28 Abderrahim Belloufi, MekkiAssas, Imane Rezgui Intelligent Selection of Machining Parameters in Multipass Turnings Using Firefly Algorithm Determination of optimal cutting parameters is one of the most important elements in any process planning of metal parts. In this paper, a new optimization technique, firefly algorithm, is used for determining the machining parameters in a multipass turning operationmodel. The objective considered is minimization of production costunderaset of machining constraints. The optimization is carried out using firefly algorithm. An application example is presented and solved to illustrate the effectiveness of the presented algorithm.
29 H.Bennour,  M.S.Said
Numerical Solution of Poisson equation with Dirichlet Boundary Conditions
In this paper, we want to establish the existence, unique- ness and regularity of the solution is obtained with Dirich- let boundary conditions, for this aim we use Galerkin method which allow us to used the fixed point theorem of Brouwer for establish ... Lien
30 Saouli Salah, Settou Noureddine, Youmbaï Selma,  Dehane Fouzia INVSETIGATION OF THE EFFECTS OF THE SOLUTE AND ITS CONCENTRATION ON HYDROGEN PRODUCTION USING PHOTOVOLTAIC SYSTEM   In this paper, a photovoltaic system was used to study the effect of the electrolyte and its concentration on the amount of hydrogen production. The photovoltaic panel was simulated by a direct current generator. Two electrolytes were used, one is sodium hydroxide and the second is potassium hydroxide. The results show that ... Lien
31 SAID MOHAMED SAID On an inverse problem for the heat equation that models the detection of defect in metallic plate whose lower part is embedded  In this work, we will study an inverse problem to determine corrosion in an inaccessible location of a metallic plate. Our study area is inside the plate metallic plate whose lower part is embedded, therefore inaccessible. We will perform measurements on the upper part of the plate, which is not in contact with the ground. For this, we will... Lien
32 GACEM Mohamed Amine, OULD EL HADJ KHELIL Aminata, GACEMI Bouabdallah, HALLA Noureddine, DJERBAOUI Amina Nesrine, BOUDERHEM Amel, HADEF Sawsen, BENREGUIEG Mokhtar, ADLI Djalal Eddine Houari Antimycotoxigenic and antifungal activities of Citrullus colocynthis seeds against Aspergillus flavus and Aspergillus ochraceus contaminating wheat stored Plant extracts and their constituents have a long history as antifungal agents, but their use in biotechnology as preservatives, due to the increasing resistance of fungi to fungicides, has been rarely reported. The aim of this study was to assess in vitro antifungal and antimycotoxigenic power of methanolic and aqueous ... Lien
33 Bouafia Saber, Benaissa Abselkader, Bouzidi Mansour, Barkat Said Sliding Mode Control of Three Levels Back-To-Back VSC- HVDC System Using Space Vector Modulation In this study, a sliding mode strategy proposed to control a three levels Back- to-Back High Voltage Direct Current (HVDC) system based on the three- level voltage source converter (VSC). The voltage-balancing control of two split DC capacitors of the... Lien
34 Laouini Salah Eddine, Segni Ladjel, Ouahrani Mohamed Ridha A comparative study of the antioxidant activity and phytochemical composition of leaves extract between three varieties of date palm tree The date palm (Phoenyx dactylifera) consisted, for the people of southern Algeria, as tree of providence. Dates and their extracts are also used for many centuries as a medicine against allergy, inflammation, constipation and gastro-protective; they also have a high antibacterial and antioxidant activity. However, no studies ... Lien
35 Lakhdari Wassima, Doumandji-Mitiche Bahia, Acheuk Fatma, Dehliz Abderrahmene, M’lik Randa, Soud Adila, Hammi Hamida Morphological Study of Different Developmental Stages of Brachytrupes megacephalus Lefebvre, 1827 (Orthoptera, Gryllidae) and Their Development in Oued Righ Region (Algerian Sahara)
 In the Southeast of the Algerian Sahara (Touggourt), a morphological study of Brachytrupes megacephalus was conducted during 2014. According to the damages caused by this cricket through deviation and loss of irrigation water due to deep tunnels dug and damage crops, we found it useful to identify the insect and study the external... Lien
36 Sofiane Saggaï, Djamel Boutoutaou, Nigel Hancock, Oum Elkheir Bachi Evaporation Reduction in Water Resources: Effect of Hexadecanol Concentration on Evaporation Rate under Algerian Arid Conditions The evaporation rate of Algerian arid zones open water bodies is extremely large and reaches 3.8 m per year. To minimize these losses in water reservoirs monolayers of Hexadecanol are used. To check the efficiency of Hexadecanol monolayer and determine the adequate quantity of substance to use, a comparison was performed ... Lien
37 w. Lakhdari, B. Doumandji-Mitiche, A. Dahliz, S. Doumandji, L. Bendifellah, Y. Bouchikh, H. Hammi, A. Soud, Mlik Host Plant Determination of Brachytrupes megacephalus Lefebvre,  1827(Orthoptera, Grillinae) Using Faeces Analysis in the Region of Oued Righ (Algerian Sahara) In the southeast of the algerian Sahara (Touggourt), the host plant determination of Brachytrupes megacephalus was studied by faeces analysis (microscopic observations). The experimentation was conducted in mid August until the end of September 2014. The main results of faeces analysis showed that the plants consumed  by  B.  megacephalus ... Lien
38 Fares KAHLESSENANE, Louiza BOUALLOUCHE-MEDJKOUNE, Djamil AÏSSANI Cross-layer energy-aware protocol for wireless sensor networks The resource limited nature of WSNs requires that protocols implemented on these networks be energy-efficient, scalable and distributed. In this paper, we present a novel combined routing and MAC protocol. The protocol achieves energy efficiency by minimizing signaling overhead through ... Lien
39 Ouanissa Smara, Audrey Julia, Cécile Moral-Salmi, Claire Vigor, Joseph Vercauteren, Belgacem Legseir Flavonoïds from Euphorbia guyoniana Boissier &  Reuter In this work, aerial parts of Euphorbia guyoniana were studied. The use of preparative high pressure liquid chromatography allowed to isolate two flavonoids and a gallic tannins: Quercetine-3O-β-D-glucuronide, kaempferol-3O-β-D-glucuronide and 1, 2, 6 tri-O-galloyl-β-D-glucose. Identifications were carried out using spectroscopic methods. In addition, scavenger potential of these compounds was studied using DPPH test. Lien
40 M. Mehani, L. Segni, V. Terzi, C. Morcia, R. Ghizzoni, M. B. Goudjil, S. E. Bencheikh Antibacterial, antifungal activity and chemical composition study of essential oil of Mentha pepirita from the south Algerian Natural substances from plants have multiple interests put to use in the industry. Essential oils are a very interesting group of these metabolites that feature different properties that make them interesting. We did this study to obtain an extract essential oil from the plant Mentha pepirita South region Algerian cultivated to the Municipality of Ouargla. the Mint, widespread in Algeria, of the family Lamiaceae is a native herb of several therapeutic properties (antiseptic, anti-neuralgic, analgesic ...)... Lien
41 A. Benlamoudi, D. Samai, A. Ouafi†, SE. Bekhouche, A. Taleb-Ahmed, A. Hadid Face spoofing detection using Multi-Level Local Phase Quantization (ML-LPQ)
Biometrictechnologiesarebecomingthefoundation of an extensive array of highly secure identification and verifica- tion solution. Unfortunately, biometric systems are vulnerable to attacks made by persons ... Lien
42 Hammoudi Roukia, Hajj Mahammed Mahfoud, Ramdane Farah and Ouldelhadj M Didi Antimicrobial activity of phenolic extract from Teucrium polium geyrii (Lamiaceae) plant
This work presents a contribution to the detection of biological activity of some secondary metabolites of Teucrium polium geyrii, (Lamiaceae) from Tamanrasset (southern Algeria). The plant was subjected to two types of phenolic compounds extraction; maceration and Soxhlet apparatus. The concentration of total phenols and flavonoids, was determined by colorimetry... Lien
43 Adel Djellal, Dr. Rabah Lakel, Randa Chergui Navigating Mobile Robot in Finite Environment Using Potential Field Merging Navigation can be defined as moving a robot to a defined objective and avoiding undesirable situations (collision and unsafe conditions) simultaneously. In this work, a navigation technique based on Potential Field has been used to plan an optimal-safe path to pilot a mobile robot in known environment... Lien
44 Laouini S Eddine, Ladjel Segni, Gherraf Noureddine, Ouahrani M Redha, Mokni Sonia Scavenging Effect, Anti-Inflammatory and Diabetes Related Enzyme Inhibition Properties of Leaves Extract from Selected Varieties of Phoenix dactylifera L.
In this study we investigate the antioxidant, anti-inflammatory, and antidiabetic activities of ethanolic leaves extracts of three selected varieties of Phoenix dactylifera L. namely: “Ghars”, “Deglet Nour” and “Hamraya”. The assessment of the antioxidant potential of crude leaves extracts, using superoxide anions inhibition, DPPH and total antioxidant activity essays, was carried out. Furthermore... Lien
45 Bouakba Mustapha, Issasfa Bahim, Boukatem Mourad, Belloufi Abderrahim Effect of fiber volume fraction in the tensile properties of renewable Diss fiber /polyester composite This paper presents a novel composite material produced by a natural reinforcement subjected to tensile test. The used reinforcement is made of Diss fibers. The Diss (Ampelodesma mauritanica) is a Mediterranean wild plant. This fiber is characterized in tensile according to ASTM standard... Lien
46 Abdelhakim Herrouz, Chabane Khentout, Mahieddine Djoudi Overview of Visualization Tools for Web Browser History Data Nowadays, the Web has become one of the most widespread platforms for information change and retrieval. As it becomes easier to publish documents, as the number of users, and thus publishers, increases and as the number of documents grows, searching for information... Lien
47 Hammoudi Roukia, Hadj Mahammed Mahfoud, Ould El Hadj M. Didi Chemical composition and antioxidant and antimicrobial activities of the essential oil from Teucrium polium geyrii (Labiatae) The composition of the essential oil from Algerian Teucrium polium geyrii (Labiatae) plant was analysed by gas chromatography–mass spectrometry (GC-MS); 85 constituents (87.72% of the total oil) were identified. The main compounds were (11.18%) dl-Limonene, (10.02%) δ-cadinene and (9.15%) trans β- caryophyllene. The antimicrobial activity of the essential oil was evaluated against Staphylococcus aureus ATCC 27923... Lien
48 M. Allaoui, A.Cheriti, N. Gherraf, E. Chebouat, B. Dadamoussa, R. Salhi Inhibition of Mild Steel Corrosion in 1M HCl Medium by Acid Extract of Haloxylon scoparium Pomel The present work sheds some light on the inhibition effect of acidic  extract of  Haloxylon Scoparium pommel on  the corrosion of steel (X52) in acid solution of hydrogen chloride (1M) using the electrochemical measurements (electrochemical polarization resistance, electrochemical impedance spectrum... Lien
49 D.A. Chacha, A. Ghezal, A. Bensayah Modélisation asymptotique d’une coque peu-profonde de Marguerre-von Kármán généralisée dans le cas dynamique  Dans un travail récent Gratie [7] a généralisé les équations de Marguerre-von Kármán classiques étudiées par Ciarlet et Paumier dans [2], où une partie seulement de la face latérale est soumise à des conditions aux limites de type von Kármán et la partie restante étant libre. Elle montre que le terme dominant du développement ... Lien
50 Nadjet Abada, Mouffak Benchohra, Hadda Hammouche Existence Results for Semilinear Differential Evolution Equations with Impulses and Delay
In this paper, we establish sufficient conditions for the existence of mild and extremal solutions for some densely defined impulsive functional differential equations in separable Banach spaces with local and nonlocal conditions. We shall rely for the existence of mild solutions on a fixed ... Lien
51 E. Chebouat, B. Dadamoussa, N. Gherraf, M. Gouamid, M. Allaou i, A. Cheriti, A. Khiari Inhibition of Mild Steel Corrosion in 1N HCl Medium by Acid Extract of Ephedra alata The inhibition action of the acid extract of Ephedra alata leaves against corrosion of mild steel in 1N HCl medium was investigated.  Experimental measurements including potentiodynamic polarization and impedance studies were performed. The corrosion rate and the inhibition efficiencies of the extract were calculated... Lien
52 Salhi Nesrine, Salama M. El-Darier, Halilat M. EL-Taher
Allelopathic Effect of some Medicinal  Plants on Germination of two Dominant Weeds in Algeria
The main objective of the present study was to investigate the phytotoxic effects of five medicinal plants; Colocynthis vulgaris Schrad, Retama retam L, Traganum nudatum Del, Pituranthos chloranthus Benth. & Hook.and Artemisia herba-alba Asso on germination efficiency, germination index and radicle length of the two dominant ... Lien
53 Abdelhakim Herrouz, Chabane Khentout, Mahieddine Djoudi Overview of Web Content Mining Tools
Nowadays, the Web has become one of the most widespread platforms for information change and retrieval. As it becomes easier to publish documents, as the number of users, and thus publishers, increases and as the number of documents grows, searching for information is turning into a cumbersome and time-consuming operation. Due to heterogeneity ... Lien
54 N. Abada, M. Benchohra, H. Hammouche, A. Ouahab
In this paper, we use the extrapolation method combined with a recent nonlinear alternative of Leray-Schauder type for multivalued admissible contractions in Fr´echet spaces to study the existence of a mild solution for a class... Lien