JFAS_Vol 15 N 01
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Item EFFECT OF ROUGHNESS ON THE CHARACTERISTICS OF THE HYDRAULIC JUMP EVOLVING INTO A RECTANGULAR CHANNEL OF COMPOUND SECTION(university of el oued/جامعة الوادي, 2022-12-11) Ghomri, A li; Lacheheb, S ena; Djamaa, W alidT he hydraulic jump is a phenomenon which characterizes the flow in the open channels. It can occur in the channels with rough beds making it p ossi ble to dissipate the significant kinetic energy. this work will analyze this kind of hydraulic jump producing in rough major beds for rectangular channels of compound section. the parameters influencing the length of the jump have been systematically s tudi ed . the analyzes of the phenomenon were conducted using the genera l jump equation. the experimental data were carried out with the aim of establishing dimensional empirical approaches which vary according to the roughness imposed on the major bed. the s e ad ditional approaches obtained are proposed. The results obtained sh owed that the rough major beds can be used to dissipate the hydraulic energies of the hydraulic jump that occurs in the stilling basins.Item CHEMICAL STRUCTURE, SUBSTITUTION EFFECT, AND DRUG-LIKENESS APPLIED TO QUERCETIN AND ITS DERIVATIVES(university of el oued/جامعة الوادي, 2022-11-25) Rouane, Abderrahmane; Tchouar, Noureddine; Belaidi, Salah; Kerassa, AichaIn the current study, molecular geometry, electronic structure, effect of the substitution, and structure physical-chemistry relationship for Quercetin derivatives have been studied by DFT (B3LYP) theory and Hartree-Fock (HF). The calculated values, net charges, MESP contours/surfaces have also been drawn to explain the electronic reactivity of Quercetin, bond lengths, dipole moments, heats of formation, QSAR properties, Lipinski’s parameters, Ligand efficiency (LE), Lipophilic Efficiency (LipE), are reported and discussed, to understand the biological activity of the Quercetin Derivatives.Item CONTRIBUTION OF THE ELECTROCHEMICAL PROCESS IN THE TREATMENT OF PAINT EFFLUENTS(university of el oued/جامعة الوادي, 2022-10-25) Sabba, Nassila; Belkabla, Mourad; Rokaia, Youcef; Djelal, Hayet; Ahmed, MouradTalebPaint discharges contain polluting agents that are highly harmful to the environment. The work proposed makes it possible to apply electrocoagulation as a process for treating paint-based effluents. Two types of paints (water and oil paints) are considered in this study. The electrocoagulation reactor used is equipped with two flat aluminum electrodes. The electrocoagulation process in an acid medium gives a better electrolysis yield allowing a sufficient quantity of ionic coagulant (Al3+) to be obtained. The ionic coagulant will, among other things, considerably reduce the turbidity parameters of the pollution. The depollution process used for the various paints considered in this study makes it possible to conclude that the method is promising on an industrial scale due to the fact that the mud obtained does not have a complex composition either to recycle their rejection or the starting products in nature.Item THIN LAYER DRYING STUDY OF ACORNS Querc us ilex L.) NEW MATHEMATICAL MODELLING APPROACH(university of el oued/جامعة الوادي, 2022-12-16) rachi, Mamhmoud T; agaz, Hind M; ahsas, Roumaissa MT he thin layer drying behaviour of acorns was investigated at three oven temperatures (60, 70 and 80 °C). The drying kinetic was fitted and modelled using di ff e rent mathematical drying models. The use of First Order (FO) and Pseudo First Order (PFO) was proposed and estimated for describe the moisture content evolution of acorns as a function of time. According the coefficient of determination R² ), the root m ea n square error ( RMSE ) and the sum mean of square error ( ² ), t he best fit was given by the L ogarithmic model. A good fit R² > 0.9942; RMSE < 2.238 and ² < 6.014) was shown by FO and PFO indicating their aptitude to describe the thin layer drying kineti c o f acorns E ffective moisture diffusivity increased from 4.016 10 8 to 1.244 10 7 m² s 1 with the rice of drying tem perature. T he elimination of water from the acorns requires an activation energy of about 55 kJ mol Item CORRELATES OF SUCCESSFUL TRANSFORMATIONAL EDUCATIONAL LEADERSHIP(university of el oued/جامعة الوادي, 2022-12-08) Limutan Limutan, Julian John N; Seblero Seblero, Jeffrey L; Abellana Abellana3, Julieta M; Ramos Ramos, Merra Mae; Marl C. Tigle, Ma. DeaThis study investigated the correlates of successful transformational educational leadersh ip th r ough the views and lived experiences of the participants from Talisay City National High School, Cebu, Philippines consisting of two (2) administrative, two (2) non teaching and nine (9) teaching personnel following a qualitative descriptive phenomen ologi c al method utilizing Colaizzi’s (1978) seven steps of data analysis. A s supported by the data extracts of the study, four themes (4) are figured out, to wit: “lead to change,” “harmony amidst diversity,” “profession as passion” and “lead by example”. As re v ealed, commitment, intra and interrelationship and leader’s influence (lead to change and lead by example) greatly affect the success of transformational educational leadership while financial (profession as passion) aspect revealed to be the least a mong t he five.Item SYNTHESIS, CHARACTERIZATION, ANTIBACTERIAL AND TOXICOLOGICAL STUDIES OF HETEROLEPTIC ACETYLSALICYLIC ACID AND ANTHRANILIC ACID METAL COMPLEXES(university of el oued/جامعة الوادي, 2022-12-16) Bamigboye Bamigboye, Merc y O; Ikechukw u, P; Osunniran, Waha b A; Adetunji, Juliana BThis present study aims at evauating the antibacterial, analgesic, and toxicologic al activities of new metals [Ni(II), Cu(II), Cd(II), and Zn(II)] complexes deri v ed from acetylsalicylic acid and anthranilic acid via refluxing method in a 1:1:1 stoichiometry ratio. Characterization was executed using melting point, molar conductance, infrared and ultraviolet visible spectroscopies . The antibacterial activities were investigated by the agar well diffusion method. The toxicological effect of the test compounds in serum and kidney homogenates of Wister rats was investigated. The screened complexes showed better antibacterial activitie s than their free li gands. The resu l t of the analysis indicated that acetylsalicylic acid possessed a good significant analgesic activity, while toxicological studies confirmed that the complexes were toxic at the level of administered dosage.Item EVALUATION OF THE SEISMIC RESPONSE OF STORAGE TANKS IN INDUSTRIAL AREAS IN ALGERIA(university of el oued/جامعة الوادي, 2022-12-17) Baba Hamed, Fatima ZohraThe analysis of the seismic response of tanks is important in risk assessment in industrial areas because the spillage of liquids can trigger other catastrophic phenomena due to the loss of con t ainment. Therefore, seismic assessment should focus on leakage based limit states. This article discusses the analysis of the seismic response of reservoirs subjected to seismic actions on the basis of a simplified procedure. The procedure takes into a cco u nt impulsive and convective actions of liquid in storage tanks. The seismic responses (sloshing wave height) are calculated using the response spectra of the different sites. The response spectra are determined on the basis of the Algerian paraseismic reg u lation RPA99 Version 2003.Item EXPIREMENTAL ANALYSIS OF DIELCTRIC BARRIER DISCHARGE FACTORS ON OZONE PRODUCTION FOR FOOD STORAGE(university of el oued/جامعة الوادي, 2022-12-17) Bellebna, Yassin e; Dida, Ame lOzone, a powerful oxidant, is effective against various kinds of microorganisms on fruits, vegetables, meat grains and their p rodu cts. The best way to generate ozone was to use dielectric barrier discharge (DBD) at atmospheric pressure. This discharge is a little specific kind because one electrode is covered by a dielectric material, thereby preventing the discharge to move tow a rds electrical breakdown. The aim of this paper has to study and identify the best concentration of ozone generated by DBD which give a better result on increasing on shelf life of food products. Obtained results pointed out that investigated parameters o f DB D have significant effect in ozone production and also for preservation of shelf life of food product for around 20 PPM without using cold treatment chamber.