Journal of Fundamental and Applied Sciences

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THE 10th ANNIVERSARY OF THE JOURNAL OF FUNDAMENTAL AND APPLIED SCIENCES
(university of eloued جامعة الوادي, 2019-06-01) Professor, Touhami LANEZ
3-D MODELLING OF ELECTRICAL PARAMETERS’ EFFECTS ON THE HEATING OF THE BASE OF AN INTENSE LIGHT ILLUMINATED POLYCRYSTALLINE SILICON PV CELL
(university of el oued/جامعة الوادي, 2021-09-01) Soro, B; Savadogo, M; Zouma, B; Tchedre, K. E; Sourabie, I; Zerbo, I; Bathiebo, D. J
Performances of a solar cell are significantly influenced by the heating of the base. Two phenomena contribute to the heating of the base of a PV cell: the heat due to the transfer by conduction of the solar energy radiation received by the surface of the PV cell and the heat generated inside the solar cell by various phenomena related to the movement of photogenerated electrons and holes. Thus, even if the increase of the quantity of carriers leads to improve the PV cell electrical parameters, this phenomenon also leads to the increase of some internal phenomena like thermalization, carriers braking and the carriers collisions which are sources of heating of the base of the solar cell Indeed, electrical parameters (photocurrent, photovoltage, electric power) are physical quantities related to the movement of charge carriers and also to the illumination mode, this means that changing of electrical parameters during the operation of the PV cell leads to a variation of the temperature inside the base of the PV cell. This work presents the effects of the increase of some electrical parameters (photocurrent, photovoltage, electric power) on the behaviour of the temperature of the base of a silicon PV cell under intense light illumination.
Abscisic Acid Effects On Water And Photosynthetic Characteristics Of Two Ecotypes Of Atriplex Halimus L.
(University of Eloued جامعة الوادي, 2016-05-01) Bidai, Y.; Achour, A.; Belkhodja, M.
The aim of this study is to compare the water and photosynthetic characteristics of two xerophilic ecotypes of Atriplex halimus (L.). Seeds collected from two different sites Djelfa and Oran are germinated in controlled greenhouse. After 6 months, the plantlets were treated 21 days with increasing concentrations of abscisic acid (0M, 10-6 M and 10-3 M). The results show that ecotype of Djelfa reduced water loss through transpiration because of high stomatal resistance. Consequently the content of chlorophyll a and b decrease significantly compared to Oran ecotype which show an increase of the osmotic potential and relative water content. Osmotic adjustment to reduce dehydration and maintain a good photosynthesis seems efficient in Oran ecotype.
ABUNDANCE AND SPECIES RICHNESS OF LOMBRIC MACROFAUNA IN A SEMI-ARID FOREST ECOSYSTEM
(University of Eloued جامعة الوادي, 2017-09-01) Ababsa, N.; Laiche, A.; Djabbar, F.
The importance of earthworms for soils has evolved over time. Our study was conducted in the forest of Ouled yagoub (North East Algerian). Sampling at three different altitudes resulted in a total of forty-nine individuals (49) and only three species were identified: Octodrilus complanatus, Allolobophora molleri and Aporrectodea rosea. Spread over two ecological categories. The specific richness is higher in the site of 1400 m of altitude. The Simpson index (Is) varies between 0.44 and 0.49 for the three study sites. The Shannon index fluctuates between 0.41 and 0.74. The values of the Hill index vary between 1 and 1.5 in the three Sites.
ADSORPTION OF Co (II) IONS FROM AQUEOUS SOLUTION ONTO TEA AND COFFEE POWDER: EQUILIBRIUM AND KINETIC STUDIES
(university of el oued/جامعة الوادي, 2019-01-01) Elsherif, K. M; Haider, I; El-Hashani, A
Adsorption of Co(II) ions from aqueous solutions onto Tea and Coffee powders has been examined in a batch adsorption process. The adsorption of Co(II) ions was found to be dependent on contact time, pH of solution, initial metal ion concentration, and adsorbent dose. The experimental equilibrium adsorption data were studied by Langmuir, Freundlich, Temkin and . The Langmuir model display demonstrated a superior fit than the other three models by higher correlation coefficient, R2. The maximum adsorption capacities calculated from the Langmuir isotherm model were 244 mg/g, for both coffee and tea at optimum circumstances. The kinetic studies denoted that the adsorption process of Co(II) ions followed well pseudo-second-order model. According to the adsorption capacity, coffee and tea powder considered as an effective, low cost, and environmentally friendly adsorbent for the removal of Co(II) ions from aqueous solutions
AGENT ORIENTED PROGRAMMING LANGUAGES: A REVIEW
(university of el oued/جامعة الوادي, 2018-09-01) Shoro, S; Rajper, S; Shaikh, N. A; Jalbani and J, S; Rajper, ul-F.
Agent oriented Programming Languages are a set of instructions used to design an Agent Oriented Systems. In Agent Oriented systems, objects known as agents is an interface to accomplish particular objectives. Agents are referred as an encapsulated systems in computer which have an autonomous actions to accomplish the design goals. Agents can be self-sufficient elements, choosing their subsequent stage without the involvement of a user. The agents are particular in the capturing of structure in the natural way and the behavior of a complex system. Now a days Agents based systems are an interesting research area in computer science fields. The undertaken study aims to present the Concept, features and model of Agent Oriented Programing Languages but the main focuses of this study is on review of different programming languages used to design Agent Oriented Systems. This study will be helpful for the scholars, researchers and academicians
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.
AIR EMISSIONS FROM IN-LAND ACTIVITIES OF CHITTAGONG PORT OF BANGLADESH
(university of eloued جامعة الوادي, 2020-01-01) A., Dey*,; M. A., Amin,; A., Akther
The study was conducted to estimate and describe air emissions generated from April 2017 to March 2018 by the in-land activities and cargo transportation of the Chittagong Port of Bangladesh, using activity-based approach. These emission sources include cargo handling equipment, head trucks and locomotives. The pollutants focused in this study are categorized into two groups: criteria pollutants consisting NOx, CO, SO2, Particulate matters and Black carbon, and greenhouse pollutants consisting of CO2, CH4 and N2O. Head trucks are the major sources of all air emission (NOx 91.35%, CO 94.83%, PM1062.11%, PM2.5 60.47%and CO2e 98.73%), demanding serious consideration to this sector.The locomotives cause the least emission among all sources and can be used as a tool to reduce emission from head trucks. About 3478.04tonne NOx, 1134.22 tonne CO, 31.09 tonne PM10, 30.97 tonne PM2.5, 22.82 tonne SO2, 23.88 tonne Black carbon, and 5141319.71 tonne of CO2e were released in the atmosphere during the study period due to the in-land port activities.
AIR VOLATILE ORGANIC COMPOUNDS (VOCS) CONCENTRATIONS, CLINICAL HEMATOLOGY AND BIOCHEMISTRY IN WORKERS OCCUPATIONALLY EXPOSED TO VOCS
(University of Eloued جامعة الوادي, 2018-01-01) Karami-Mohajeri, S.; Farsipour, B.; Mozaffari, A.; Faghihi-Zarandi, A.
Context: Volatile organic compounds (VOCs) are one of the most important pollutants in the air that can lead to a broad range of adverse health effects. One of the sources of VOCs is their emissions during copper concentration in copper factories. Aims: To evaluate the concentration of VOCs in the concentration plant of a copper factory and the impact of these pollutants on worker’s health. Settings and Design: This was a cross-sectional study in a concentration plant of a copper factory. Methods and Material: Gas chromatography-mass spectrometry was used for measurement of VOCs in the air samples collected by activated charcoal tube. Additionally, urine and fasting blood samples were taken for urinalysis and routine Hematological and biochemical tests of kidney and liver functions. Statistical analysis used: data were analysed using the student's t-test for difference of mean by Graph pad Prism foe windows (version 6.07) Results: Fourteen VOCs were identified in the air samples and all parameters except alkaline phosphatase, blood sugar, bilirubin, and monocytes, lymphocytes, and eosinophils counts were significantly increased. Conclusions: The average exposure of workers to VOCs did not exceed the current TWA. However, evidence of subtle, sub-clinical and pre-pathologic early blood, liver, and kidney dysfunction was evident in exposed individuals.
ALGEBRIC METHOD AND LSCR TECHNIQUE FOR ESTIMATING THE PARAMETERS OF A BIOREACTOR
(university of eloued جامعة الوادي, 2020-05-01) S., . Borsali
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Analysis And Optimizationofin1-xgaxasysb1-ythermophotovoltaiccellsunderlowradiatortemperatures
(University of Eloued جامعة الوادي, 2012-07-01) Bouzid, F.; Maamri, N.
In this paper,we investigated the heat to electricity conversion efficiency of In1-xGaxAsySb1-yradioisotope thermophotovoltaic (RTPV) converter with x=0.8 and y=0.18, taking account of the photons with energy below the cells bandgap using a comprehensive analytical process. This was done with a computer program designed for this reason, which allowed the computation of the cell performance under a variety of specified incident radiation spectra as well as a variety of material parameters. The results show that for an emissivity value of 0.78, a cell thickness of about 7µm with low front recombination velocity(700cm/s),a conversion efficiency greater than 29% can be obtained for radiator’s temperature of1300°k at ambient temperature. This efficiency will decrease as the cell temperature increase.
Analysis Of A Data Base Of Chalcopyrite Semiconductors In 2 And 3 Dimensions
(University of Eloued جامعة الوادي, 2011-07-01) Ferouani, A. M.; Merad Boudia, M. R.; Hachemi, H.
The analysis of the data is currently, in the statisticians, the object of a true phenomenon of mode, characterized at the same time by the passion and the rejection. To determine the characteristics of a whole of data is obviously not an end in itself, but this lapse of memory is unfortunate because the type of data available always influences the direction of research. The factorial analysis in normalized principal components (PCA), is particularly adapted to the reduction of tables of measurements, where one generally works on a matrix of correlation between characters. In this article we will report our results of analysis into 2 and 3 dimensions of the molecular weight and energy of plasmon of semiconductor chalcopyrites by using what one call the datamining materials. All information was presented in the tables envisaged by an ACP method of the semiconductors étudiés. L' analyzes factorial substitutes for primitive measurements of new variables or factors (which are linear combinations of the primitive variables) with the help of which it is thus possible to optimize the visualization of the data in a restricted number of figures. Large at the modo we present, the results related to the development of new approaches of Datamining, Analysis in principal components (ACP), of the data-processing techniques which were applied to semiconductors and combined with metals to predict new materials or ultra stable coatings.
Analysis Of A Fully Developed Laminar Flow B/w Two Parallel Plates Separated By A Distance By Using Comsol Multiphysics
(University of Eloued جامعة الوادي, 2017-01-01) Raza, S. S.
This is a short analysis of flowing water in an infinite channel separated by a distance by using a Simulation Software Comsol Multiphysics. The flow behavior and the interaction with the boundary has been analysed. Wall no slip conditions were set for evaluation purpose. The analysis is a steady state analysis by using Incompressible Navier Stokes Model.
Analysis Of Indexed-guided Highly Birefringent Photonic Crystal Fiber Employing Different Cladding Geometries
(University of Eloued جامعة الوادي, 2012-01-01) Jouri, A. M.; Simohamed, L. M.; Boudrioua, A.; Ziane, O.; Hassani, B.; Dadi, A.
In this paper, a comparative study of three geometries of highly birefringent photonic crystal fibers (HB PCF) is presented. The proposed geometries are: V type PCF, Pseudo-Panda PCF and selectively liquid-filled PCF. Based on the famous Finite Difference Time Domain (FDTD) method with the perfectly matched layer (PML) boundary condition, the simulations are carried out in the aim to find a tradeoff between the chromatic dispersion, the birefringence and the confinement loss.
Analysis Of Induction Motor With Broken Bars And Constant Speed Using Circuit-field Coupled Method
(University of Eloued جامعة الوادي, 2011-01-01) Halem, N.; Zouzou, S. E.; Srairi, K.
The paper presents the use of the two-dimensional finite element method for modeling the three-phase squirrel-cage induction motor by using circuit coupled method. In order to analyze the machine performances, the voltage source is considered. The Ansys magnetic analysis software is used for calculating the magnetic field of an induction motor having a cage fault. The experimental results prove that the proposed approach constitutes a useful tool for the study and diagnostics of induction motors.
Analysis Of Metallurgical Aspects And Their Role In Processing And Performance Of Superalloys: A Review
(University of Eloued جامعة الوادي, 2017-01-01) Raza, S. S.; Ahmad, T.; Manzoor, M. U.; Kamran, M.; Ahmad, R.
Metallurgical processing factors like kinetic and thermodynamic parameters which are essential for modeling of γ′ phase precipitation have been studied. These parameters include γ′ solvus temperature, Gibbs free energy of dissociation of the γ matrix to form γ′, nucleation rate, effective diffusivity and interfacial energy. Nucleation methods and effect of cooling rate on the final phase structure have been analyzed. Co based superalloys have been studied as a potential and promising material for aerospace applications. Effect of microporosity on the mechanical properties of Superalloys has also been analyzed.
Analysis Of The Phenotypic Variability Of Some Varieties Of Durum Wheat (triticum Durum Desf) To Improve The Efficiency Of Performance Under The Constraining Conditions Of Semiarid Environments
(University of Eloued جامعة الوادي, 2016-09-01) Haddad, L.; Bouzerzour, H.; Benmahammed, A.; Zerargui, H.; Hannachi, A.; Bachir, A.; Salmi, M.; Oulmi, A.; Nouar, H.
The experiment was conducted during three growing seasons and two planting dates. The cultivation site is placed at the ITGC Setif characterized by a semi-arid environment. The objective of the study is the analysis of phenotypic variability of traits measured for 15 varieties of durum wheat, through the average effects, to decline the ways, characters and varieties could play in favour of performance under the constraining semi-arid conditions. The year effect indicates that given the difficulty of predicting the performance enabled by years, it then makes sense to go straight for this performance within genotypes. Analysis of the effect genotype highlights characters connected to performance and is the Setifis variety that lends itself well. For the effect of sowing date, it is that early sowing promotes a better expression of the characteristics compared to late sowing.
Analysis Of The Phenotypic Variability Of Twenty F3 Biparental Populations Of Bread Wheat (triticum Aestivum L.) Evaluated Under Semi-arid Environment
(University of Eloued جامعة الوادي, 2017-01-01) Fellahi Z. . . . . . .; Hannachi A.; Ferras K.; Oulmi A.; Boutalbi W.; Bouzerzour H.; Benmahammed A.
This research was conducted to screen and analyse the variability within twenty F3 populations of bread wheat (Triticum aestivum L.) generated by Line x Tester mating design. The results indicated the presence of sufficient variability within and between F3 populations for the eight measured variables, which represent plant phenology, physiology, yield and yield components. Different populations have been identified to improve the measured variables separately. The number of spikes appeared to be the most important determinant of grain yield. PCA and cluster analyses indicated that the Acsad1069/El Wifak and Acsad1135/Hidhab, with a relatively high grain yield, aboveground biomass and 1000 grains weight, are the best F3 populations to improve the productivity. However, Acsad899/Rmada and Acsad1135/Rmada populations were earlier and had a low number of spikes. These populations had also favorable genes for heat tolerance.
ANALYTIC TECHNIQUE TO DETERMINE THE ENERGY OF CONFORMAL ANTENNAS
(university of el oued/جامعة الوادي, 2021-09-01) Ibrahim, R. W; Hadid, S. B; Momani, S
The con formal mapping (CM) mode is en gaged for conformal antenna strategy using the geometric representation of the CM. For some conformal antennas (CAs) have the same shape, actuality able to segment a shared rough system, which is an essential improvement of th is method in these CA optimiza tions (CAOs). Different parameters of CAs are optimized. The function reactions in this sample are selected as starlike distribution. The assessments of efficiency, gain and accuracy with the commercial software Mathematica 11 .2 are prepared. The suggested method is mainly appropriate for CAO. Moreover, we formulate the energy operator in a 2D geometry, when the discharged field is detected over a semi circumference in the far zone.
Analytical Expression For The Electric Field Of The Single Mode Laser Homogeneous Broadening In The Pulse Regime
(University of Eloued جامعة الوادي, 2012-01-01) Ayadi, S.
The simplest model of the laser is that of a single mode system homogenously broadened. The dynamical behavior of this laser is described by three differential equations, called Haken-Lorenz equations[1], similar to the Lorenz model [1] already known to predict deterministic chaos. In previous recent work [5-7] we have proposed a simple harmonic expansion method to obtain a series of harmonics terms that yield analytical solutions to the laser equations. This method allows us to derive an analytical expression of the laser field amplitude when this last undergoes a periodic oscillations around zero mean value. We also obtain an analytical expression of the pulsing frequency.

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