JFAS_Vol 13 N 03

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APPLICATION OF RAW PEACH STONES FOR HEXAVALENT CHROMIUM REMOVAL FROM AQUEOUS SOLUTION USING COLUMN SYSTEM
(university of el oued/جامعة الوادي, 2021-09-01) Khemmari, F; Benrachedi, K
Raw biosorbent waste is a cheap and environmentally friendly material that provides good cost-benefit for the industries that use it. The objective of this study is to improve the feasibility of raw local peach stones (RPS) waste for the removal of hexavalent chromium from aqueous solution using column system. The characterization of the adsorbent (RPS) was done by using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The impact of various parameters such as flow rate (1.5,3 and 5 ml/min) and height bed (1,2 and 3 cm) on Cr(VI) adsorption onto RPS were investigated. Two models were proposed to illustrate column breakthrough curve obtained at different flow rates and bed heights. The obtained experimental results showed a better adsorption efficiency at a low flow rate (1.5 ml/min) and a bed height of 3cm. Thus this work provides the high potential of raw peach stones (RPS) for the removal of Cr(VI) ions from aqueous solution.
A MULTICRITERIA DECISION BASED ASSESSMENT OF AGRICULTURAL SOLID WASTES AS POTENTIAL FEEDSTOCK FOR ELECTRICITY GENERATION IN NIGERIA
(university of el oued/جامعة الوادي, 2021-09-01) Salami, H. A; Lawal, S. O; Bademosi, T; Olowosokedile, O; Olalekan, H. I
An effective method of managin g so lid wastes from agricultural processing is through thermochemical conversion to energy dense and carbon neutral energy products ; which relieves the issue of depleting global resource s , solves the problem of over r eliance on fossil fuel, reduces the impact on the environme nt and brings economic benefits. In this study, the suitability of agricultural solid wastes as potential feedstock for electricity generation in Ni geria via a combined pyrolysis steam power plant tec hnology was assessed. Technique for ord er of preference by simil arity to ideal solution was used to identify the most appropriate raw material for electricity gene ration among the considered alternatives rice husk , corncob, and palm kernel shell. These wastes showed high electricity generatio n potential (232 2 077 GWh per annum )), high profitability index, and high carbon reduction benefit about 1428 kg CO 2 eq. m 3 of bio oil)
MOBILIZATION OF TRANS-CINNAMIC ACID, PRECURSOR OF LIGNINS IN DATE PALM ROOTS OVER A COMPATIBLE INTERACTION WITH THE PATHOGENIC AGENT OF BAYOUD DISEASE, FUSARIUM OXYSPORUM F. SP. ALBEDINIS
(university of el oued/جامعة الوادي, 2021-09-01) Boucenna-Mouzali, B; Gaceb-Terrak, R; Azouaoui-Ait Kettout, T; Touam, D; Rahmania, F
Bayoud disease of date palm Phoenix dactylifera L. is the result of specific interactions established between this plant and Fusarium oxysporum f. sp. albedinis (F.o.a.). Facing this aggression, the host plant uses its constitutive preventive system and also defense mechanisms triggered by the pathogen. Our work is based on the identification of secondary metabolites produced during this confrontation in date palm roots. Our results show that during infection, susceptible cultivar accumulates considerable proportions of para-hydroxybenzoic acid. In soils infested by F.o.a., a significant decrease of para-hydroxybenzoic acid and an accumulation of para-hydroxycinnamic acid were observed in the roots of resistant cultivar. The analysis we realized shows that preferential orientation of the precursor “trans-cinnamic acid” of phenolic metabolism is activated in the root in contact with the causative agent of Bayoud. It also shows the presence of a greatest amount of lignin in resistant cultivar roots when compared with the susceptible ones.
GENETIC DIVERSITY ANALYSIS OF TUNISIAN OLIVE CULTIVAR BY SNP MARKERS
(university of el oued/جامعة الوادي, 2021-09-01) Ayadi, N; Ben Ayed, R; Rebai, A
To study the genetic diversity of 17 olive tree cultivars (Olea Europaea L.) sampled from different Mediterranean regions, we screened three SNP markers (ACP-1, ANTHO3, SOD) located in three different genes. The genotypes of the sampled cultivars were depicted via the genotyping analysis. The dendrogram based on cultivar genotypes generated by SNP markers revealed three clusters which were consistent with the established classification. In addition, we compared the results obtained with agro-morphological and chemical data using bioinformatic analyses. This work offers a more relevant classification of the genetic classification of the Tunisian olive cultivars
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.
SEAWATER PROBLEM IN THE ALLUVIAL COASTAL AQUIFER OF NADOR, TIPAZA, ALGERIA
(university of el oued/جامعة الوادي, 2021-09-01) Bouderbala, A; Remini, B; Saaed, H. A; Younsi, A
This work focuses to the study of the coastal aquifer of of Tipaza in the north of Algeria, for highlights mechanisms of potential seawater intrusion into groundwater. Tipaza aquifer has been overexploited for irrigation and water supply, which caused a negatively impacts on its water quality. To investigate these impacts, many tools have been carried out as: monitoring of piezometric level and physico-chemical analysis of 24 wells from 2008 to 2012 and pumping tests. The piezometric map shows the existence of zero meter level inside the plain; which making this area vulnerable to seawater intrusion, where isovalue curves of some chemical parameters are in increasing towards the sea. Results show also a high concentration gradient of some parameters in the first two kilometers, at 1 mS.cm-1.km-1 for EC and 600 to 900 mg.L-1.km-1 for sodium and chlorides respectively. The hydrochemical study confirme the hypothesis of seawater intrusion in the coastal aquifer of Nador.
RUIN PROBABILITY OF INSURANCE COMPANIES IN NIGERIA USING MODEL WITH ECONOMIC ENVIRONMENT: PRE AND POST CAPITALIZATION ANALYSIS
(university of el oued/جامعة الوادي, 2021-09-01) Oseni, B M
The behavior of the reserve of insurance firms in Nigeria from 1996 to 2011 is investigated using ruin model with economic environment. The investment po rtfolios are classified according t o the types of returns expected: Investments with fixed returns and investments with stochastic returns. Against the usual ways of monitoring the performances of insurance companies using regression and correlation, a ris k reserve model in economic environ ment is used. The ruin probability is determined from the integro differential equation for the model. The results show that there has been a positive growth in the reserve before recapitalization, though the rate of grow th of the reserve after recapitaliz ation is higher. The total probability of ruin shows that there is a drop in the probability of ruin after recapitalization. Also, the ruin probabilities show that companies are more liable to get ruined from investment t han from claims after the recapita lization against the converse before recapitalization.
THERMO-MECHANICAL PROPERTIES OF BIO-INSULATION FROM EMBEDDING BIRD EGGSHELL INTO CERAMICS FOR BIOENGINEERING APPLICATIONS
(university of el oued/جامعة الوادي, 2021-09-01) Shamunee, P; Selarak, P; Tangboriboon, N.
Incorporating bird eggshell in porcelain can improve its physical, thermal, and mechanical properties, resulting in dense porcelain products. Calcium carbonate (CaCO3) from eggshells can react with silica (SiO2) and alumina (Al2O3) in porcelain clay to form calcium feldspar or anorthite (CaAl2Si2O8), which lowers the sintering temperature to <1000 °C. In this study, 0, 5, 10, 15, and 20 vol.% bird eggshell powder was added to porcelain slips and fired at 600, 700, 800, and 900 °C for 1, 3, and 5 h. The best formula of porcelain product having good mechanical and thermal properties was obtained at 10 vol.% quail eggshell-added porcelain fired for 5 h at 900 °C. The obtained sample demonstrated a relatively low thermal expansion coefficient (1.0515x10-6 °C-1), high compressive strength (6200 N mm-2), and high hardness (12.2 ± 0.30 HV).
FACING FLOODS IN TÉBESSA CITY, EASTERN ALGERIA, A MORPHOMETRIC AND CARTOGRAPHIC APPROACH TO PRIORITIZE INTERVENTION IN THE CITY'S SUB-WATERSHEDS USING GIS AND REMOTE SENSING
(university of el oued/جامعة الوادي, 2021-09-01) Hadjela, A; Annab, R; Seghir*, K
The objective of this work is to determine the importance of the five partial sub-watersheds that penetrate the city of Tébessa and their water networks in the “Oued El Kabir” watershed , belonging to the semi-arid climate Characterized by torrential rains constituting a natural danger, in terms of the real dimensions of the floods, especially since the hydromorphological characteristics of the valleys are not clear on the ground, because of the urban expansion which carried them away. The study was based on the morphometric and cartographic approach which allows the comparison of sub-watersheds between them, through 12 indicators, to determine the most influential sub- watersheds using GIS and remote sensing The results showed that the “ennagues” sub-watershed is the most dangerous for the city, it is a priority for its protection, and the need to manage the most vulnerable parts
THE GEOGRAPHY OF COVID-19 IN ALGERIA: IN SEARCH OF DEMOGRAPHICAL PARAMETERS OF VULNERABILITY
(university of el oued/جامعة الوادي, 2021-09-01) Mazri-Benarioua, M; Chettah, S
The pandemic spread of Covid-19 is worth examining by the geographic eye in order to highlight the spatial dimension of this propagation. The geographical approach is mainly convened to observe some of the territorializing aspects of coronavirus, through which it becomes possible to define the territorial specificities that intervene as vectors of vulnerability to the pandemic. Claiming to be one of the first geographical researches on Covid-19 in Algeria, this article proposes to question the correlated relationship between its propagation dynamics and the spatial and demographic characteristics of pandemic territories. The objective is to understand the behaviors of vulnerability or resistance of these territories, via geographical parameters. Such an understanding is principally useful in health prevention and action strategies.
AN ASSESSMENT OF THE EFFECTS OF HERBICIDES ON THE POPULATION DENSITY OF EARTHWORMS (LUMBRICUS TERRESTRIS) IN SOIL
(university of el oued/جامعة الوادي, 2021-09-01) Hudu, M; Issifu, A; Abubakari Zarouk, I
Continuous burrowing, ingesting, turning, mixing, aeration and the improvement of the drainage of soil are the major roles played by earthworms in renewing soil fertility. Larger amounts of herbicides are applied to the soil continuously by farmers as they realize the importance of these herbicides. These herbicides could then accumulate to toxic levels in the soil and become lethal to microorganisms, plant, wild life and man. In this study, we sought to assess the effects of formulated products of glyphosate, atrazine and 2, 4-dichlorophenoxyacetic acid (2, 4-D) on the survival and reproduction of the tropical earthworm (Lumbricus terrestris). The highest number of deaths of adult worms was recorded for 2, 4-D formulation at 0.5 mg/kg and the lowest in glyphosate formulation at 0.2 mg/kg. The general trend was that, the number of cocoons reduced with increasing concentration across all the formulations of the herbicides.
COMPARATIVE ANALYSIS OF TRANSMISSIBILITY AND CASE FATALITY RATIO OF SARS, MERS AND COVID-19 VIA A MATHEMATICAL MODELING APPROACH
(university of el oued/جامعة الوادي, 2021-09-01) Ayoade, A.A; Latunde, T; Folaranmi3, R.O
Coronavirus epidemics emerged in the 1960s and the world has witnessed seven coronavirus outbreaks since then. Four of the coronaviruses instigate human influenza while the rest: Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV), the Middle East Respiratory Syndrome Coronavirus (MERS-CoV) and Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) trigger severe respiratory disorders (SARS, MERS and COVID-19 respectively). The etiology of SARS, MERS and COVID-19 are similar but their epidemiology, in terms of incubation period, infectivity, case fatality ratio and the serial interval differ. In an attempt to compare the infectivity and case fatality ratio of the diseases, a mathematical model was considered for each disease. The key epidemiological quantity, the basic reproduction number, was derived for each model to examine the transmission potential of each disease. The mortality rates for the diseases were also investigated by considering the global report of COVID-19 as of October 1 2020 together with the history of SARS and MERS. Results from the computations showed that COVID-19 had the highest transmission potential and at the same time the lowest case fatality ratio. It was also revealed that COVID-19 would have wrecked more havocs had its case fatality ratio was as high as that of MERS.
SOLVENT EFFECT ON HYPER RAYLEIGH SCATTERING (HRS) FIRST HYPERPOLARIZABILITY OF SUBSTITUTED POLYENE : PART (
(university of el oued/جامعة الوادي, 2021-09-01) Labidi, N. S
The first hyperpolarizabilities β HRS of substituted hexatriene molecules have been carried out to assess the effects of the bridge length, of the frequency dispersion as well as the solvent polarity . These calculations confirm the particular behaviour of the first hyperpolarizability β HRS , depolarization ratio and the anisotropy factor as a function of the incident light frequency and solvent polarity. The impact of the solvent and expanding the π conjugated limit to improve the β HRS Finally, t he interplay between  HRS and  ////,  vec , d N..N... E gap and the Kirkwood Onsager factor [(ε 1)/(2ε + 1)] was established.
RESPONSE OF DURUM WHEAT ( Triticum aestivum L.) TO FOLIAR APPLICATION OF MICRONUTRIENTS IN SALTED AND CALCAREOUS SOIL
(university of el oued/جامعة الوادي, 2021-09-01) M iloudi, B; M asmoudi, A; M asmoudi, M.C h
The alkaline nature of arid regions soil usually posses a reduction in solubili ty and assimi lability of micronutrient in soil. A study has been carried out to focus on the effect of foliar spraying of micronutrients (Fe, Zn, Cu, Mn, Mo ) on wheat cultivation in a saline and calcareous soil. Th e studied growth parameters are stem len gth, yield, w eight of 1000 seeds and weight of dry matter. According to ANOVA at 5% the fo llowing results were obtained : the Zn+Cu 87.67cm , Cu+Mn 83.63cm, Fe+Zn+Cu+Mo 83.53cm treatments exerted the best lengths in succession. For dry matter, the best treat ments reporte d are Zn+Cu+Mo 12396.00Kg/ha, Fe+Mn+Mo11614.67Kg/ha and Fe+Zn+Cu+Mn 11415.67Kg/ha. The results of the weight of 1000 seeds are arranged as follows: Cu+Mo 44.62g was the greatest followed by, Zn+Mo 42.97g, and then by Zn+Cu+Mn+Mo 42.85g. The to pranked trea tments in the yield parameter are Fe+Mo 3480.00 Kg/ha, followed by Fe+Zn+Cu+Mn 3451.00 Kg/ha, and then Mn+Mo 3442.20 Kg/ha.
EFFECT OF RAMIAL FRAGMENTED WOOD AMENDMENTS ON THE GERMINATION RATE (%) OF DURUM WHEAT
(university of el oued/جامعة الوادي, 2021-09-01) Kerrouche, I; Bazri, K.E.M; Zeltni, A.E.S; Ouahrani, G
The presence of organic matter in agricultural soils is an important factor in assessing the conditions of the soils. BRF and Manure are energy inputs that can improve the soil. The objective of our work is to study the influence of the contribution of Rameal Fragmented Wood (RFW) and cattle manure in the presence and absence of earthworms Octodrilus complanatus on the germination rate (%) of durum wheat (Tritucum durum) of the Hedba 3 variety. The study station is located in a semi-arid zone (Constantine, Algeria). the results obtained show that the contribution of RFW or RFW mixture and cattle manure in the presence and absence of earthworms Octodrilus complanatus has a beneficial effect on the the germination rate increased by 193.35% on average in the amended plots compared to the control plots
RAYLEIGH-BENARD CONVECTION STUDY IN A CAVITY FOR A SHEAR THINNING FLUID
(university of el oued/جامعة الوادي, 2021-09-01) Ali Benyahia, B; Ait Messouadene, N
Rayleigh-Bénard's convection is a classic problem of heat transfer. Since the 1900s, studies for Newtonian fluids have been widely developed in this field and phenomena well understood. On the other hand, the complexity of non-Newtonian behavior makes the number of studies much lower. Among the non-Newtonian behavior, the shear-thinning fluid studies are even rarer. This work focuses on a numerical study of natural convection for a non-Newtonian fluid shear thinning, in the Rayleigh-Bénard configuration. The Carreau-Yasuda model describes the shear thinning behavior. The convective flow considered is confined in a cavity, which is subjected to a vertical temperature gradient, heated from below and cooled from above. The transport equations are discretized by the finite volume method and are solved numerically using a CFD code: "Ansys Fluent".The influence of the control parameters on the flow and heat transfer such as the Rayleigh 𝑅𝑎 number, the aspect ratio, 𝐴, the Prandtl numbers, 𝑃𝑟, the power index 𝑛 and the time constant 𝐸, are studied.
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.
DEVELOPMENT OF A LOW COST OUTDOOR CARBON MONOXYDE ANALYSER APPLIED TO THE CITY OF ORAN, ALGERIA
(university of el oued/جامعة الوادي, 2021-09-09) Rahal, F; Benabadji, N; Bencherif, M; Bencherif, M. M
In Algeria, t he alternative to the absence of these air pollution measurement networks can come from the recent development of electroc hemical sensor technologies for air quality monitoring which arouses a certain interest because of their miniaturization, low energy consumption and low cost. We developed a low cost outdoor carbon monoxide analyzer called APOMOS (Air pollution Monitoring System) based on electrochemical sensor managed by microcontroller. In order to validate the APOMOS system, the recorded measurements are compared with measurements taken by a conventional analyzer. Comparison of the measurements resulting from conventiona l analyzer and those resulting from the APOMOS system gives a coefficient of determination of 98.39 %.
PHENOL BIODEGRADATION AND OPTIMI S ATION OF CULTURAL AND PHYSICAL CONDITIONS BY THE FREE CELLS OF NEWLY ISOLATED PHENOL DEGRADING ALCALIGENES SP. AQ5 02
(university of el oued/جامعة الوادي, 2021-09-01) Aisami, A; Ahmad, S A; Yasid, N A; Johari, W L W; Shukor, M Y
B iological t reatment is understood to be the most effi cient technique for phenol removal paralleled to other physio chemical methods. 16s rRNA sequencing for the identification . Mineral salt media with 0.5 g/L phenol as the only carbon source. Temperature pH, salinit y and nitrogen source were optimi s ed . The effects of heavy metals on the percentage of phenol degradation with were tested A ccession number of KT693288 was assigned after identification . Temperature of 25 35° C pH 7 8 phosphate buffer were the optimum a nd a mmonium sul ph ate was established to be the paramount nitrogen source at 0.4 0.5 g/L for isolate. The optimi s ed conditions were found reducing the incubation period to 48 h with the ability to tolerate up to 0.2 g/L sodium chloride and degraded 50% an d 1.1 g/L phenol. Meanwhile, the isolate AQ 5 02 can also effectively degrade 1000 g/L phenol in the presence of heavy metals such as Cr, Zn, and Fe .
MORPHOANATOMICAL AND PHYTOCHEMICAL STUDIES FOR THE QUALITY CONTROL OF EUPHORBIA LANCIFOLIA SCHLTDL. (EUPHORBIACEAE
(university of el oued/جامعة الوادي, 2022-09-01) Paredes, M. E; Morales Coromac, R. E; Lima Ortiz, W. C; Valle Jurado, A. L.; Farchi, D; Prieto, J. M
Introduction: Euphorbia lancifolia Schltdl. (Euphorbiaceae) is a medicinal specie of central America origin, known as Ixbut in Guatemala, widely recognized for its important natural galactogogue activity. Methods: as identity test we here run macro and micro morphoanatomical studies of the characters of the vegetative organs. We also developed standard chemical tests for quality by both TLC and HPLC for infusions and tinctures of varying alcoholic strength. Their radical scavenging activities in DPPH and NO were also measured. Results: macro and micro morphoanatomical characters of the vegetative organs present a set of characteristics to facilitate the identification of dry powdered samples of this species. We developed optimal conditions for the TLC and HPLC phytochemical fingerprints of the 4 most common pharmacopoeial liquid herbal preparations from this herbal drug, namely infusion, 70%, 45% and 20% hydroalcoholic tinctures. Conclusions: Our work provides the Latin-American industry with a set of analyses to establish the identity and chemistry of E. lancifolia samples for quality control purposes.

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