JFAS_Vol 11 N 01

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SYNTHESIS, ELECTROCHEMICAL AND HETEROGENEOUS ELECTROCATALYTIC BEHAVIORS OF A NOVEL NON SYMMETRICAL COPPER(II) COMPLEX
(university of el oued/جامعة الوادي, 2019-01-01) Bounab, N; Ourari, A; Derafa, W; Aggoun, D
We describe in this paper the synthesis of new unsymmetrical tetradentate copper(II) Schiff base complex, prepared from tridentate Schiff base ligand (HL) and pyridine molecule. This new copper complex was identified by various physicochemical characteristics such as elemental analysis (EA), FT-IR, UV-Vis, XPS analysis and thermogravimetry (TG/DTG). The electrochemical behavior of the copper(II) complex was investigated by cyclic voltammetry in N,N-dimethylformamide (DMF). These experiments have been allowed to obtain new conducting polymeric films, prepared by successive cycling at the suitable potentials. These polymeric films containing metallic centers were studied to evaluate their electrocatalytical performances in which copper (II) ions were used as electrocatalysts in the heterogeneous conditions for the electroreduction of 1,4-dibromobutane.
DEFORMATION MECHANISMS, TIMING AND SHEAR SENSE ANALYSIS OF PART OF THE PRECAMBRIAN TERRAIN OF SOUTHWESTERN NIGERIA
(university of el oued/جامعة الوادي, 2019-01-01) Adedoyin, A. D; Ebiri, E. P; Alebiosu, M. T
The study area is part of the polycyclic Precambrian Basement Complex of southwestern Nigeria, which comprises meta-sediments and granitoids of varying compositions. The area was primarily deformed into a large-scale sheeted structure, which was sequentially followed by developments of first and second phases of folding that interfered with each other. Brittle to semi-ductile shear deformations, initiated by an ESE-directed transport of the hanging wall of a major NE-SW trending low-angle normal fault culminated in the third phase of fold and development of widespread shear zones. Latter phases of deformation resulted in rotation of finite strain axis relative to the instantaneous strain during a non-coaxial progressive simple shear deformation. We posit that the dominant terminal mechanism of deformation in the area is the late-kinematic progressive heterogeneous simple shear during the late- to post-Pan African orogenesis.
MANAGEMENT OF A MAIN CITRUS PEST BLACK PARLATORIA SCALE PARLATORIA ZIZIPHI (LUCAS) (HEMIPTERA: DIASPIDIDAE) IN THE MEDITERRANEAN BASIN
(university of el oued/جامعة الوادي, 2019-01-01) Haddad, N; Sadoudi, D; Garcia-Mari, F
The scale of black parlatoria, Parlatoria ziziphi (Lucas) (Hemiptera: Diaspididae), causes considerable damage to citrus fruits in the Mediterranean basin. For well managed this pest, we carried out a thorough ecological and behavioral study on the preference of localization and fixation of this pest on the citrus tree throughout the year for two years in six different citrus orchards to know: the lemon, the clementinier and the orange variety Thomson and washington in Tizi Ouzou, sub-humid region of the Mediterranean, in the North of Algeria. This new information on the biology and behavior of P. ziziphi could be applied to the definition of a better pest management strategy and to improvement of sampling methodology for monitoring this devastating pest by the good recognition of its place of infestations.
DESIGN AND IMPLEMENTATION OF NONLINEAR PID CONTROLLER FOR A QUADROTOR CONTROL
(university of el oued/جامعة الوادي, 2019-01-01) Medjdoubi, O; Hazzab, A; Alalei, A
The following article represents the control of an unmanned airborne vehicle (Quadcopter), using nonlinear PID controllers in order to control the altitude, as well as the attitudes (pitch, roll and yaw) of the Quadcopter. Two approaches have been proposed for adjusting the parameters of a PID controller. Foremost, the PID controller gains are settled in an ideal way by using a reference model strategy. In the moment approach, these parameters are adjusted Nonlinear PID. MATLAB/Simulink has been utilized to test and compare the execution of the controllers gotten. The obtained results using the nonlinear PID controllers show the efficiency of the proposed controllers it presents a response with less error and minimal over shoot compared to the results of classical PID controller.
COMMUNICATION OF MATLAB GUI AND ANSYS MAXWELL: AN EDUCATION TOOL FOR TUBULAR LINEAR GENERATOR
(university of el oued/جامعة الوادي, 2019-01-01) Arslan, S; Gürdal, O; Akkaya Oy, S
In this study, analytical calculations of a tubular linear generator model are performed by using Matlab Gui for free-piston applications. A training tool including the processes of design of linear generator, sizing with the analytical equations and analyzing with the finite elements methods was suggested. Geometric dimensions in Matlab Gui interface are solved by transferring automatically to finite element model Ansys-Maxwell 2D-rz plane. The results of analytical analysis are in concordance with the results of finite elements. In addition, Ansys-Maxwell Script and Matlab codes are given in the appendix.
EFFECT OF SALINITY ON THE PHYSIOLOGICAL BEHAVIOR OF THE OLIVE TREE (VARIETY SIGOISE)
(university of el oued/جامعة الوادي, 2019-01-01) Boualem, S; Boutaleb, F; Ababou, A; Gacem, F
Salinity is a major problem directly affecting the ecological balance and the development of agriculture in the Mediterranean basin, particularly North Africa. This phenomenon is considered as the most important abiotic factor limiting crops growth and productivity, degrading and polluting soils in arid and semi-arid. In order to study the influence of salinity, on the physiological parameters and to assess the potential of adaptation of the olive tree in a saline environment, three parcels containing the Sigoise variety and subject to different degrees of salinity were selected: Parcel 1 (non-saline); Parcel 2 (saline); Parcel 3 (very saline). Under a saline constraint, the results showed two contrasting tendencies, an intense increase in the content of proline, sodium (Na+) and chlorophyll (b), while water content, potassium and chlorophyll (a) decreased strongly with increasing salinity.
BRANCH AND BOUND METHOD TO RESOLVE NON CONVEX QUADRATIC PROBLEMS OVER A RECTANGLE OF
(university of el oued/جامعة الوادي, 2019-01-01) Gasmi, B; Benacer, R
We present in this paper a new convergence of the Branch and Bound method to resolve a class of non convex quadratic problems over a rectangle of Rn . We construct an approximate convex quadratics functions of the objective function in ordre to determinate the lower bound of the global optimal value of the original problem (NQP) over each subset of the feasible domain of the optimization problem. We applied the partition and reduction technical on the feasable domain t o accelerate the convergence of the proposed algorithm. Finally, we give a simple comparison between this method and another method wish has the same principle with examples.
COMPARATIVE STUDY ON THE USE OF ZEOLITE AND PRECIPITATION AGENTS TO RETARD SCALE FORMATION IN THE SEAWATER PRETREATMENT PROCESS
(university of el oued/جامعة الوادي, 2019-01-01) Dahmani, K; Belloul, M; Kherroub, D. E
The scale formation in heat transfer surfaces in seawater desalination plants by multi stage flash processes (MSF). This scale is formed during the precipitation of salts containing in seawater such as calcium and magnesium carbonates. The pretreatment is based on the removal of the calcium and magnesium cations from seawater, using zeolite as cation exchanger and precipitator agents as: lime, soda ash, and mixture of soda ash with soda. DRX, SEM, and EDX analyses were employed to characterize the zeolite before and after pretreatment so as to demonstrate the change composition on the zeolite surface. The results revealed that the pretreatment by a mixture of soda ash (13g/L) and soda (4g/L) favor the precipitation of calcium and magnesium ions. The calcium and magnesium ion concentrations in seawater were reduced, respectively, from 620 mg/L and 644 mg/L to 5 mg/L and 9.11 mg/L
AGRONOMIC CHARACTERIZATION OF SELECTED CLONES OF TUNISIAN TABLE OLIVE (Olea europaea. L) VARIETY ‘MESKI
(university of el oued/جامعة الوادي, 2019-01-01) Ben Amar, F; Arfa, H; Yengui, A
The clonal selection carried out within the Tunisian olive table variety Meski allowed to select three more productive clones. The agronomic characterization of these clones was carried out during four years (2012 to 2015). The analysis of variance revealed that the clonal effect was not significant for the fruit pomology indicating a high homogeneity of the selected clones and significant only for olive production. The variation in endocarp weight and fruit specific density (weight/volume) was very low between years and these parameters could be considered as characterization criteria for the Meski variety. The correlations between the pomological parameters show that the variations are proportional between the fruit and the pulp weights and the volume. Olive production is negatively correlated with fruit and pulp weights. The hierarchical classification shows that the three clones are grouped mainly according to the year. Principal component analysis shows that the first component accounts for 66% of the total variability and is positively correlated with fruit and pulp weights and volume.
GRAPHOANALYTIC DETERMINATION OF PARAMETERS RELAXATION DEFORMATION OF ROCKS BY DATA OF DEVELOPMENT OF DEPOSITS
(university of el oued/جامعة الوادي, 2019-01-01) Kazymov, B. Z
As a rule, to determine the deformation parameters of rocks, the results of the interpretation of the actual data of hydro-gas-dynamic studies of wells are used in the non-static mode. In the article, a technique different from this approach for determining the parameters of the relaxation deformation of rocks according to the data of the development of gas deposits is given. The proposed technique is characterized by its versatility due to the fact that, in contrast to the methods based on specially conducted hydro-gas-dynamic studies of wells, the field development data is used, and also changes in the real properties of the reservoir system, as saturation and super-compressibility factors of the gas
SURFACE MODIFICATION OF SILICA NANOPARTICLES BY MEANS OF SILANES: EFFECT OF VARIOUS PARAMETERS ON THE GRAFTING REACTIONS
(university of el oued/جامعة الوادي, 2019-01-01) Bounekta, O; Doufnoune, R; Ourari, A; Riahi, F; Haddaoui, N
The adsorption of four silanes, namely: N-(2-Aminoethyl)-3-aminopropyltrimethoxysilane (AEAPTMS), 3-methacryloxypropyltrimethoxysilane (MPTMS), allyltrimethoxysilane (ATMS), N-2-[(N-vinylbenzylamino)ethyl]-3-aminopropyltrimethoxysilane hydrochloride (CVBS) onto the surface of silica nanoparticles has been studied using water/ethanol (5/95, v/v) mixture. Four experimental parameters were explored for the grafting of the silanes: pH, concentration, time, and temperature. Possible interactions between the silanes and the surface of silica were investigated by means of FT-IR Spectroscopy. The FT-IR analyses confirmed the effectiveness of the silanization of the silica surface. The amount of the adsorbed silane on the silica nanoparticles appeared to be influenced by the initial concentration of the silane, pH, time and temperature of modification.
PHYSICO-CHEMICAL PROPERTIES OF SILURIAN HOT SHALE IN AHNET BASIN, ALGERIA (CAS STUDY WELL ASS-1)
(university of el oued/جامعة الوادي, 2019-01-01) Kadri, M. M
The prediction of hot shale interval in Silurian formation in a well drilled vertically in Ahnet basin Is by logging Data (Resistivity, Gamma Ray, Sonic) with calculation of total organic carbon (TOC) using ∆ log R Method. The aim of this paper is to present Physico-chemical Properties of Hot Shale using IR spectroscopy and gas chromatography-mass spectrometry analysis, This mixture of measurements evaluation and characterisation show that the hot shale interval located in the lower of Silurian, the molecules adsorbed at the surface of shale sheet are significantly different from petroleum hydrocarbons this result are also supported with gas-liquid chromatography showed that the study extract is a hydroxypropyl
SIMULATION OF PHOTON ATTENUATION THROUGH ALUMINIUM USING E-RADIATION SIMULATOR (EGS5 CODE)
(university of el oued/جامعة الوادي, 2019-01-01) Sabri, A.H.A; Tajudin, S.M
Radiation education is necessary for a wide variety of people, such as radiation workers and students of medical imaging. In order to understand radiation behaviour inside the material, we have developed an e-radiation simulator by using Monte Carlo simulation programme (EGS5 code). Anyone who has no programming knowledge will able to simulate photons in a material through this easy to use web-based environment radiation simulator. To validate our simulator, we calculate photon linear attenuation coefficient (µ) of an aluminium material which commonly used as a filter in diagnostic radiology. For the sake of comparison, we calculate at high energy photon of 662 keV to compare our results of µ with the XCOM database and literature. Consequently, the results from the developed simulator comparable with the database and literature for the case of photon attenuation study.
EFFECTS OF MAGHNITE NANOCLAY MODIFICATION AND COMPATIBILIZATION ON THE PHYSICAL AND MORPHOLOGICAL PROPERTIES OF POLY(VINYL CHLORIDE)/POLY(ETHYLENE-CO-VINYL ACETATE) BLENDS
(university of el oued/جامعة الوادي, 2019-01-01) Bouaziz, I; Doufnoune, R; Haddaoui, N; Benachour, D; Baltä-Calleja, F. J
In this research work poly(vinyl chloride)(PVC), ethylene vinyl acetate copolymer (EVA), and Maghnite nanoclay (MGT) were used to prepare PVC/EVA nanocomposites. The MGT clay was intercalated with octadecyltrimethylammonium chloride (ODTMA) and grafted with γ-aminopropyltriethoxysilane (APTES). The blend nanocomposites were prepared through the melt mixing of PVC/EVA blend at a weight ratio of 50/50 (wt%/wt%) with 20 wt% of compatibilizer; ethylene vinyl acetate grafted with an alcohol (EVA-g-OH) and 3 wt% of modified MGT clay using a Brabender plastograph. The nanocomposites so prepared were characterized using X-ray diffraction, TGA/DTA, mechanical tests and SEM. The results showed that when PVC was blended with EVA, with the modified MGT and with the compatibilizer, synergistic effects in the thermal stability and mechanical properties were observed.
EXAMINING THE EFFECTS OF HYDRO-ALCOHOLIC EXTRACT OF MOMORDICA CHARANTIA FRUIT ON AVOIDANCE MEMORY ALTERATIONS IN MICE USING STEP-THROUGH MODEL
(university of el oued/جامعة الوادي, 2019-01-01) Miri, A; Askari, S. F; Shahraki, E
Medicinal plants have been, and still are, of a particular value and importance for public health provision in terms of both treatment and prevention of diseases. Among the effects of such plants are the impacts on the memory and learning process. In this study, the effect of hydroalcoholic extract of Momordica charantia on the avoidance memory alterations was investigated in mice using the step-through model. The hydroalcoholic extract of the soaked plant was administered to the mice at doses of 10, 25, 50, 100, and 200 mg/kg by gavage (intragastric tube) method. In comparison with the control group receiving only drinking water, the highest memory improvement was observed at a dose of 25 mg/kg. The results of interferential intraperitoneal administration of scopolamine and the extract gavage at a dose of 25 mg/kg indicated the ability to restore scopolamine-induced memory corruption by the total extract of M. charantia.
A NUMERICAL AND EXPERIMENTAL STUDY OF URBAN GEOMETRY’S CONTROL OF WIND MOVEMENTS IN OUTDOOR SPACES. CASE OF A HUMID CLIMATE
(university of el oued/جامعة الوادي, 2019-01-01) Bouketta, S; Bouchahm, Y
Many studies have shown the impact of urban geometry on thermal comfort in outdoor spaces, but few of them have addressed the control of adverse wind effects in urban humid areas. This work deals with this specific context. It aims to highlight the role of the geometry of urban spaces in the control of the wind, mainly in the city of Jijel (Algeria), where wind is the essential element to be reckoned with. It is shown concretely into in-situ measurement campaigns (taken in winter 2016 and summer 2017) during which microclimatic parameters were recorded simultaneously for tow case studies with distinct geometries spaces between the U-shaped and L-shaped buildings. More precisely, the first step is to identify the most important geometrical parameters and then describe the wind behaviour by numerical simulation with the help of the “Envi-met V4” software. The results show that the H/w ratio is the geometrical parameter to take into account in order to control the wind
KINETIC STUDY OF FERMENTATION OF FERMENTABLE SUGARS PRESENT IN DATES VARIETY GHARS OF EL OUED REGION
(university of el oued/جامعة الوادي, 2019-01-01) Ocif Khaled, M.T; Ladjel, S
Dates variety Ghars from the region of El Oued in the south east of Algiers these dates rich in fermentable sugars are used for the production of bioethanol by fermentation. In this study we prepared bioethanol by fermentation of date must at the laboratoryl, to understand the kinetics of this transformation we followed the evolution of the must density, the sugar content, the pH and the absorption light at 490nm during fermentation.
DEFORMATION MECHANISMS, TIMING AND SHEAR SENSE ANALYSIS OF PART OF THE PRECAMBRIAN TERRAIN OF SOUTHWESTERN NIGERIA
(university of el oued/جامعة الوادي, 2019-01-01) Adedoyin, A. D; Ebiri, E. P; Alebiosu, M. T
The study area is part of the polycyclic Precambrian Basement Complex of southwestern Nigeria, which comprises meta-sediments and granitoids of varying compositions. The area was primarily deformed into a large-scale sheeted structure, which was sequentially followed by developments of first and second phases of folding that interfered with each other. Brittle to semi-ductile shear deformations, initiated by an ESE-directed transport of the hanging wall of a major NE-SW trending low-angle normal fault culminated in the third phase of fold and development of widespread shear zones. Latter phases of deformation resulted in rotation of finite strain axis relative to the instantaneous strain during a non-coaxial progressive simple shear deformation. We posit that the dominant terminal mechanism of deformation in the area is the late-kinematic progressive heterogeneous simple shear during the late- to post-Pan African orogenesis.
STUDY OF THE WORKABILITY AND MECHANICAL STRENGTH OF CONCRETE IN THE FACE OF UPWELLING (CASE OF THE EL OUED REGION OF ALGERIA)
(university of el oued/جامعة الوادي, 2019-01-01) Djedid, T; Guettala, A; Mani, M
The objective of this study is to explore the effect of partial and total substitution of river sand by crushing sand in ordinary concrete. Various mixtures were tested to evaluate the properties of fresh and hardened concrete exposed to the water rising from the water table. The river sand was substituted by the limestone sand for the following proportions (0%, 30%, 40%, 50%, 60%, 70%, and 100%). The results showed that, the presence of limestone sand greatly improves the properties of strengh and workability. It was noted that these properties were much higher in the presence of crushed limestone sand compared to silica sand in the concrete.The optimal percentage of river sand substitution by crushed limestone sand is 50%.
EVALUATION OF THE QUALITY OF AN INTELLIGENT AND SUSTAINABLE TOURIST URBAN SYSTEM IN TLEMCEN
(university of el oued/جامعة الوادي, 2019-01-01) Moulay, N; Bekkouche, A
This article proposes the evaluation of a tourist urban system "Plateau LallaSetti, Tlemcen" in a global framework for the elaboration of a territorial diagnosis with a view to taking charge of urban complexity. The integrated "Quality Safety Environment" approach, which is very suitable for dealing with the complexity of urban systems, aims to introduce the site to urban sustainability by putting the principles of sustainable development by involving all stakeholders in decision-making through participatory governance by introducing the notion of urban intelligence. This approach guarantees a consensus upstream of the decision-making process, reducing the likelihood of conflict situations linked to contradictory positions of its actors compared the main orientations governing the urban project.

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