JFAS_Vol 12 N 01

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PRODUCER GAS PRODUCTION FROM AN UPDRAFT GASIFIER STOVE USING GOLDEN SHOWER TREE WOODY AND CHARCOAL BIOMASS AS FUEL
(university of eloued جامعة الوادي, 2020-01-01) K., Sookramoon
This paper presents producer gas production from an updraft gasifier stove with the size of 33.5cm width×83.5 cm height and the chamber volume of 0.052 m3 using Golden shower tree woody and charcoal biomass as fuel. The Golden shower tree biomass (4×2×2 cm size) were burdened at the top of the stove and the generated fuel gas flows through the pipe and passed through the filter and go into the cyclone due to remove of dust and tar. Producer gas consisting of CO, H2, CO2, CH4. The results of the test indicated that fuel gas-producing from burning 7 kg of Golden shower chips at the air flow rate of 9.52×10-3 m3/s the water absorbed 753.159 kJ heat and the temperature in the combustion zone was 824.6 C. By using 7 kg charcoal as a fuel, at the same air flow rate, the water absorbed 672.115 kJ heat, the temperature in the combustion zone was 761.51 C within 14 minutes.
PALYNOLOGICAL STUDY OF ANGIOSPERMS OF ROSTOMID PARK OF TIARET IN ALGERIA
(university of eloued جامعة الوادي, 2020-01-01) B., . Maghni1*,; ., Khedim1, R; M., Maatoug1,; , Hellal2 B.
The present work consists of a palynological study carried out on 67 species of Rostomid park of Tiaret in Algeria. A classification of the orders according to the number of apertures of their pollens showed that, Monocots mainly present pollen with one aperture. While most of the Eudicots express Triaperturate pollen. The classification of the studied species according to the form and the number of the apertures of their pollen revealed that the species having tricolpate pollen presented 21%, tricolporate 14%, stephanocolpate7%, Triporate 6%, monocolpate 5%, préporate5%, polyad 4%, while species with other pollen morphology (monad monoporate, dicolpate and inaperturate) represent only an insignificant number. The largest spherical pollen diameter is 122 μm and that of iso polar pollen diameters until111.8/116.6μm.
STUDY OF THE INFLUENCE OF SOLVENTS ON THE POLYPHENOLS CONTENT OF SALVIA OFFICINALIS L EXTRACTS AND THE EFFECT ON ANTIOXIDANT ACTIVITY
(university of eloued جامعة الوادي, 2020-01-01) S., Tidjani,; , Adaika, C; S., Djaber
Algerian Salvia Officinalis L aerial parts were extracted with pure solvents in increasing polarity (hexane, acetone, methanol and 80% aqueous methanol. All extracts were examined by assessing their content in polyphenols and the antioxidant levels were evaluated by two in vitro tests using spectroscopic and the voltametric methods. The quantitative assessment of total phenols and flavonoids by the colorimetric method make it clear that the extracts are very rich of these compounds. The hydro-methanol and methanol extracts gave the highest DPPH and .− 2 O radicals scavenging activities (12.15 μg/ml) and (0.704 mg/ml) respectively.
EFFECT OF THE PHOTOVOLTAIC MODULE TYPE ON THE PERFORMANCE OF AN ARDUINO (I-V) ACQUISITION DEVICE
(university of eloued جامعة الوادي, 2020-01-01) M. A., Ouaridhene1*,; A., . Benmoussat1,; , Lasker3, B; , . Benatallah3 M.
The demand increase for the energy and the world’s challenge to decrease the consummation of fossil fuels has oriented many research works toward the development and investigation in the renewable energy sources (RES) like solar energy. In fact, an adequate parametrisation of the performance of photovoltaic (PV) modules starts by their characterisation. In this study we focus on measuring the current-voltage (I-V) and power-voltage (P-V) curves for two types of PV modules – Monocrystalline and Amorphous that were tested under different temperature. A developed low-cost acquisition device based on Arduino board is used to monitor and trace those data. The performance and the quality of this later is analysed in term of solar panel characteristics and show that the developed acquisition device is especially suitable for amorphous (PV) modules.
NONLINEAR PI CONTROLLER FOR THE CONTROL OF ELECTRIC VEHICLE WITH TWO-MOTOR-WHEEL DRIVE
(university of eloued جامعة الوادي, 2020-01-01) A., . Laguidi1,*; A., . Alalei1
In this work we proposed a nonlinear PI (NLPI) controllerof the electric vehicle with two motor wheel drives. This proposed combine controller has significantly improved control performance compared to conventional linear fixed-gain PI controller. The different speeds of the wheels are ensured by the electronic differential, this driving process makes it possible to direct each driving wheel to any curve separately. Modeling and simulation are performed using the Matlab / Simulink tool to study the performance of the proposed controller.
APPLICATION OF RANDOMIZED RESPONSE TECHNIQUE ON A SURVEY SAMPLING OF YEAST INFECTION AMONG NIGERIAN FEMALE UNDERGRADUATES
(university of eloued جامعة الوادي, 2020-01-01) A. O., . Adepetun
In this paper, randomized response technique was adopted to determine the proportion of female undergraduates at the Federal University of Technology Akure that have had yeast infection at a point in time, the age range that has the most number of yeast infection cases as well as the female hostel with the highest number of yeast infection cases. Questionnaires were used to collect data from the respondents. Z-tests were used in hypothesis testing. All comparisons involving randomized response data used the estimated proportion of girls with yeast infection and the sampling variance to calculate the z-score. The results of the study indicated that Jadesola female hostel has the most number of yeast infection cases proportion 99.8% while the proportion of yeast infection cases in Jibowu hostel is 66.8%. The result also shows that 90% of the female undergraduates between the age range of 16 and 18 years contracted the infection.
HYDROCHEMICAL STUDY OF SOURCES SALINITY IN SHALLOW WATER SPRINGS OF NORTHERN ALGERIAN SAHARA
(university of eloued جامعة الوادي, 2020-01-01) O., Melouah1*; H., . Zerrouki1
This study is conducted in The Guerrara Oasis; suffer from high salinity of alluvial aquifer used in drinking and irrigation, the distribution of the drilled wells in the study area is anarchic and water salinity is a subsisting problem all along the year, To evaluate the problem gravity two hydrochemical campaigns are acquired during wet and dry seasons , the results confirms the presence of saliferous bodies affecting water quality, The order of abundance of the ions in the ground water samples is Cl->Na+>SO4 ->Mg2+>Ca2+>HCO3 ->K+ the piper diagram reveals that’s the ground water is Cl- - SO4 - and mixed Cl- - Na+ indicating a evaporitic hydro-chemical type, Multiariate statistics and special geochimestry diagrams are used to evaluate the chemical process responsible in groundwater salinization.
ELABORATION AND CHARACTERIZATION OF NANOCRYSTALLINE CADMIUM OXIDE FILMS
(university of eloued جامعة الوادي, 2020-01-01) H., Benattou,; N., . Benaramdane,; , . Bouzidi* A.
Cadmium oxide in thin film was deposited on glass substrates by spray pyrolysis technique from aqueous solution of cadmium nitrate. The diagrams of X-ray diffraction show that the films are polycrystalline. Morphological study shows uniform deposited film and submicron sized grains growth perpendicularly on substrate surface. Optical gap energy of cadmium oxide was estimated to be 2.15eV. Optical study shows that CdO film transmitted in visible and in the near red infrared wavelength range. The conductivity study indicates a semiconducting behavior of cadmium oxide in thin films. Dielectric response of cadmium oxide films was interpreted by orientation and space charge polarization.
OPTIMAL DESIGN OF PHAREMACEUTICALS SUPPLY CHAIN
(university of eloued جامعة الوادي, 2020-01-01) R., . Boukli-Hacene1,*; , Boudahri2, F.; , Betaouaf H.
t is very known that the availability of drugs is the major problem faced by patients. Therefore, this article deals with the optimization of a pharmaceutical supply chain, i.e. we need to reorganize the entire current pharmaceutical network with a main objective of no patient suffers as long as the medicine exists somewhere. Achieving this requires a strategic organization of the geographic network in order to gain a better distribution. It is based on the information that must be received after a general study on the entire health sector in a specific area. The problem is formulated in a nonlinear model (MINLP) and in order to solve it we resort to using optimization solvers to show the effectiveness of this approach
DIVERSITY AND DISTRIBUTION OF THE HYMENOPTEROFAUNA IN NORTHERN AND WESTERN ALGERIA
(university of eloued جامعة الوادي, 2020-01-01) F., Marniche2
The study of the Hymenoptera fauna associated with the Fabaceae is carried out in different environments in the Northern and Western Algeria. Insect sampling was carried out at seven sites representing three regions with different ecosystems and bioclimatic stages, namely: Algiers, Boumerdes and Tissemssilt. The results obtained show a total of 1022 individuals captured representing 59 taxa, distributed in 46 genera and 18 families. Qualitatively, the Boumerdes region is the richest with 648 individuals; it is followed by that of Algiers then Tissemssilt with respectively 191 and 181. In most of the stations, the dominant family in terms of individuals is that of Apidae whose the rate exceeds 60%. The honey bee Apis mellifera intermissa has a remarkable relative abundance varying between 50% and 89%.
AN INTELLIGENT HYBRID MODEL FOR REDUCING NON-TECHNICAL LOSSES IN ELECTRICAL INDUSTRY
(university of eloued جامعة الوادي, 2020-01-01) H., Tazarvi1,; J, .Shahrabi2*
Non-technical losses, specially electricity theft is a major concern for electricity distribution companies all over the world due to its huge financial impact on their revenue. For developing countries such as Iran, the case is even more important because of the fact that the use of advanced metering infrastructure have not been implemented completely. Since the data mining and its techniques have been widely used nowadays and proven to be useful in so many cases like fraud detection problems, it has been decided to use this science in order to tackle non-technical losses problem for an Iranian company by focusing on meter tampering or it may also be referred as fraud in electricity which plays a huge role in creating none-technical losses. The proposed model proved to be applicable for the company by having a much better performance using multi agent ensemble model of SVM, RF, and NN, in comparison to the company’s traditional statistical solution which could merely predict less than ten percent of fraud cases correctly.
IMPROVEMENT IN SPEED PERFORMANCE OF AN INDUCTION MOTOR WITH SLIDING MODE CONTROLLER AND ANN FOR DTC
(university of eloued جامعة الوادي, 2020-01-01) Y., Bekakra*1,; D., Ben Attous2,; Z., Tir3,; O., Malik
To further improve the dynamic speed control performance of an induction motor (IM) using a controller based on sliding mode control (SMC) strategy, the switching table for direct torque control (DTC) is realized using a feed forward artificial neural network (ANN). The proposed feed-forward ANN consists of three layers: input, hidden and output layer. The input layer consists of three neurons (sector of flux vector, electromagnetic torque error and stator flux error), the hidden layer consists of a number of neurons that can be determined by experiment to obtain good results. The output layer consists of three neurons (three signals of the converter Sa, Sb and Sc). Simulation results under MATLAB environment are presented and compared with classical DTC using an Integral-proportional (IP) controller to verify the proposed approach.
EXPERIMENTAL INVESTIGATION OF HYGROTHERMAL BEHAVIOR OF DIRECT GREEN FACADES UNDER SEMI-ARID CLIMATE
(university of eloued جامعة الوادي, 2020-01-01) K., Benhalilou1,2*,; S, . Abdou2,; , . Djedjig3 R.
This paper aims to investigate the hygrothermal behavior of direct green facades and assess their efficiency under semi-arid climate. For that purpose, a comparative study was conducted in three buildings; two buildings with direct green façades (covered with deciduous climbing plants) and one with a bare façade. Air and surface temperature, relative humidity and wind speed were collected in situ and several factors were taken into consideration as thickness and density of plant cover. The analysis of measurement data revealed that direct green façades contribute to improve the outdoor and indoor thermal environment of buildings due to the effect of shading and evapotranspiration. Moreover, the different types of green façades illustrated their different heat impact on the thermal environment of buildings depending on the density and thickness of the plant layer and the covering ratio.
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.
EFFECT OF WATER STRESS ON RHIZOBIA SYMBIOSIS IN ALFALFA (MEDICAGO SATIVA L.)
(university of eloued جامعة الوادي, 2020-01-01) A., Mouffok1*,.; M., . Belhamra2
The objective of this work was to highlight the responses to the low, moderate and severe water deficit of five varieties of alfalfa. The mechanisms studied focused on the relative water content, dry matter yield and symbiotic nitrogen fixation. The results obtained showed that the effects of water stress are manifested by a decrease in the relative water content and negatively affect vegetative growth as well as the symbiotic nitrogen fixation. The varieties studied behave differently depending on the severity of stress. However, the Diamant and Baldia varieties proved the most tolerant to the different degrees of water deficit. On the other hand, the varieties Dista and Moapa showed a significant sensitivity to the lack of water. This study could be used to define relevant criteria for drought resistance that can be used in varietal selection.
A LOW-DOSE PROTECTIVE EFFECT OF PHYCOCYANIN ON THE TOXICITY OF DELTAMETHRIN TO VITAL ORGANS IN RATS: IN VIVO STUDY
(university of eloued جامعة الوادي, 2020-01-01) A. C., Bouzar1; , Benali2, Y.; A., . Bitam1
The study highlights the histopathological alterations of the liver, kidney and heart of female rats exposed to a low dose of deltamethrin (DLM), the potential hepatoprotective, nephroprotective and cardioprotective effects of phycocyanin. Twenty-four (24) female Albino Wistar rats divided into four groups recognised as follows: Control rats received a standard diet (C). Group (PC) treated with a standard diet enriched with 3.6 ± 0.1 mg of phycocyanin per kg of granules. Group (DLM) treated with a standard diet combined with DLM in water at a concentration of 1.28 mg per kg body weight per day. The remaining group (DLM / PC) was processed by the combination of the DLM and PC scheme. The toxicity of DLM was revealed by transaminase analysis and histological observation. The association (DLM + PC) revealed a protective effect of phycocyanin as illustrated by the reduction of the concentration of serum AST and the important decrease of lesions in the tissues studied. Therefore, it shows that PC has a protective action against the toxic effects of DLM.
DISCRETE WAVELET ANALYSIS FOR STATOR FAULTS DETECTION IN INDUCTION MACHINE
(university of eloued جامعة الوادي, 2020-01-01) R., Kechida1,; , . Menacer 2 A.
The induction motors are not always operating under complete steady state conditions, therefore prompting the development of non-stationary techniques for fault detection. In this paper an inter-turn short circuit fault is considered in the stator winding. The technique for diagnosis in transient state, especially in startup state is based from using the DWT. The signal used for the fault detection is the stator current. The experimental results show that using DWT can effectively be used to diagnose this type of the fault in the motor.
SYNTHESIS AND CHARACTERIZATION OF THE CHARGE TRANSFER COMPLEXES POLYVINYL CARBAZOLE WITH TRINITROFLUORENONE
(university of eloued جامعة الوادي, 2020-01-01) B., Sakki1,; , Bouras3, O.; A., Haouam1
Carbazole based polymers are materials of considerable scientific and industrial interest due to their attractive features, such as hole-transporting, high charge-carrier mobility, and electroluminescent properties. Poly (N-vinyl carbazole) (PVK) is easily synthesized, soluble in common organic solvents, poly (N-vinyl carbazole)/2,4,7-trinitro-9-fluorenone (PVK/TNF) charge transfer complex is one of the best-known organic photos conducting materials for application in electrophotography. In the present research, a spectrophotometric method applied for the study of (colored charge transfer complexes) CTC of PVK with TNF reveals the formation of 1:1 (A:D) complex, the formation of CTC with PVK and TNF from the conductivity of the CT Complex. The concentration of the donor is affected when it reacts with the acceptor and that when we increase the concentration of the donor.
A SIMPLE METHOD FOR PREDICTION OF THE FLASH POINT OF MONOTERPENES
(university of eloued جامعة الوادي, 2020-01-01) K., . Mokadem1,2,; M., Mokadem1,; K, Benzahi3,; M, Korichi1,; I, Benchikh6 ,; M. L., . Belfar2
The flash point(Fp) is very important physical property used to estimate the risk of fire and fire hazard of a flammable to avoid the occurrence of fire or explosion, Monoterpenes are a class of terpenes, They have relevance to the pharmaceutical, cosmetic, agricultural, food industries and product principle of compounds volatile, and cause augment ignition the fire .In this papier, a group contribution and a group-interaction contribution approach are proposed to predict the flash point(Fp) of Monoterpenes compounds, A comprehensive database of 259 composes type monoterpenes, The best performance was observed for group-interaction contribution approach, with an average absolute relative deviation of 1.43% and a correlation coefficient of 0.906 Results also show that both models represent simple and reliable approaches for the estimation of the flash point(Fp).
DRUG LIKNESS FILTERS AND QSAR ANALYSIS OF CAMPHOR-BASED DIIMINES DERIVATIVES AS ANTIVIRAL AGENTS
(university of eloued جامعة الوادي, 2020-01-01) W., Hamzi1,2; S., Belaidi3,*,; O., Oukil2,; N., Aoumeur2, 2; , . Medjahed2 S
In the present study, Quantitative structure–activity relationship (QSAR) study has been applied on twenty-five molecules of camphor-based symmetric diimines. A Multiple Linear Regression (MLR) procedure was used to correlate the relationships between molecular descriptors and the biological activity of camphor-based symmetric diimine derivatives. The predictivity of the model was estimated by cross-validation with the leave-one-out method. Our results suggest a QSAR model based on the following descriptors: MW, HE, Pol, MR, MV, HBA, NRB, PSA, μ and Etotal, for the influenza virus reproduction inhibition to confirm the predictive power of the models. High correlation between experimental and predicted activities was observed, indicating good quality of the QSAR model.

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