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    Address of the intervention: The human right to understand expert science: the standard of modernity of the law?
    (University of eloued جامعة الوادي, 2018-09-12) Soltani, Amina
    Two decades later, participatory democracy emerged in public law, posing the need for the law to be written by demanding the administration of truth, and the words of the law itself can no longer be tolerated in today's society except through a genuine discourse. The law becomes the element that increases the performance of an evidentiary group to produce facts. Inference here with the science where the law is united by science or mingling through the resort to objectivity, which is the fruit of scientific experience to bring the legal system to the system of interpretation of honest and legitimate, the law to provide models and systems in the form of a set of rules and answers adapted to this extent or that with the development Science . For example, the use of DNA in the criminal justice process gradually evolved to less than 20 years, the least controversial scientific material in criminal justice to prove and understand the physical evidence of the crime scene. The use of lab evidence has grown in scientific innovations and practical applications. The analysis of the PC and mobile phone segments has become a physical guide to the suspect's cybercrime, giving the prestige and prestige of science and technology to understand And proof of physical evidence
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    Analysis of the variance water distribution of pivot sprinkler irrigation on the productivity of the potato plant in El Oued region of Algeria
    (Edirne. Turkiye, 2023-09-18) Messaoudi Mohammed; Hacene Laouedj; Ghemam Amara Djilani
    This study aimed to determine the extent different of distribution of the axial sprinkler water as a method of irrigation, and the effect of this on the quantity and quality of potato plant production in different areas along the axis sprinkler in the sandy soil of Eloued region in Algeria. For this, we relied on a sample of data consisting of 150 observations distributed over 10 areas according to the length of the axis. statistically we used oneway-analysis of variance after ensuring its statistical validity. Accordingly, we concluded that despite the significant statistical significance of the difference in the distribution of irrigation water( and the time taken and flow strength) along the axis, the difference in the amount of water supplied in the tenth area (tail region) reached a maximum of 57,58 % relative to the reference area ( the fourth region), which recorded at 42,42 % of what the reference area obtained, and at least 21,60 % was obtained in the eighth area relative to the reference region, which obtained 78,40 % of what the reference area obtained. However, according to the tests of our study, this had no significant effect on the difference, quantity and quality of production along the radius at the 5 % level. In light of these results, we concluded that the productivity of the irrigation water component fundamentally differs between the areas along the axis, which means that this irrigation method is not economical in sandy soils.
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    Antioxidant and antimicrobial activity of flavonoid extracts of Arnebia Decumbens (Vent) growing in southeast Algeria
    (CISAI- Sousse- Tunisie, 2023-07-11) Tamma, Noureddine (تامة نور الدين)
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    Artificial bee colony optimization for economic dispatch with valve point effect
    (Higher Education Press, 2014-12) Labbi, Yacine; Ben Attous, Djilani; Mahdad, Belkacem
    In recent years, various heuristic optimization methods have been proposed to solve economic dispatch (ED) problem in power systems. This paper presents the well-known power system ED problem solution considering valve-point effect by a new optimization algorithm called artificial bee colony (ABC). The proposed approach has been applied to various test systems with incremental fuel cost function, taking into account the valve-point effects. The results show that the proposed approach is efficient and robust when compared with other optimization algorithms reported in literature.
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    Bio-activity of essential oils from Cymbopogon schoenanthus L
    (University of Eloued جامعة الوادي, 2021-10-24) KADRI, Mounira; BELBOUT, Amel; SALHI, Nasrine; YAHIA, Abedelouahab
    الفعالية البيولوجية للزيت الأساسي للماد Cymbopogon schoenanthus L تهدف هذه الدراسة إلى التحقق من الفعالية المضادة للأكسدة و الفعالية ضد بكتيرية للزيت الأساسي لنبات اللماد النامي في الصحراء الجزائرية تم استخلاص الزيت الأساسي للجزء الخضري للماد عن طريق التقطير المائي (كليفنجر) لمدة 3 ساعات. أما الفعالية البكتيرية للزيت الأساسي للماد فاستعملنا طريقة الانتشار عبر الأقراص في وسط الجيلوز . السلالات البكتيرية المختبرة هي .Klebsiella pneumoniae ATCC 700603, Listeria innocua Clip74915, Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC 25922, Salmonella enterica ssp. Arizonae CIP 81, Staphylococcus aureus ATCC 25923, Bacillus cereus, Enterococcus faecalis الفعالية المضادة للأكسدة تم اختبارها عن طريق قدرة الزيت على كبح الجذر الحر للDPPH. نبات اللماد غني بالزيت الأساسي و الذي قدر مردوده بـ 6.06±0.54 % كما قدرت قيمة IC50 في الفعالة المضادة للأكسدة ب28.82±11.72 mg/ml لم يكن للزيت الأاسي تأثير واضح على السلالت البكتيرية Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC 25922, Salmonella enterica ssp. Arizonae CIP 81, Bacillus cereus, Enterococcus faecalis،لكنه اضهر فعالية ضد Klebsiella pneumoniae, Listeria innocua, Staphylococcus aureus،و أعلى قطر تثبيط رسم عند السلالة Klebsiella pneumoniae,بـ 36.67±1.53mm. Bio-activity of essential oils from Cymbopogon schoenanthus L. This study aimed at investigating the Antioxidant and antibacterial activity of essential oils from Cymbopogon schoenanthus L. (spreng) was collected of south Algeria. The essential oils were extracted by hydrodistillation of fresh aerial part of C. schoenanthus a (Clevenger-type apparatus) for 3 h. The antimicrobial activity of C. schoenanthus essential oil was evaluated using Agar well-diffusion test (Lopes-Lutz et al., 2008). The microorganisms tested were Klebsiella pneumoniae ATCC 700603, Listeria innocua Clip74915, Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC 25922, Salmonella enterica ssp. Arizonae CIP 81, Staphylococcus aureus ATCC 25923, Bacillus cereus, Enterococcus faecalis. The antioxidant and free radical scavenging activity were determined by spectrophotome, Based on DPPH hydroxyl radical scavenging activity. The Cymbopogon schoenanthus was rich in essential oil, yielding (6,06±0,54%). Antioxidant activity essential oil has been done by using DPPH essay. IC50 values observed for DPPH essay were 28,82±11,72 mg/ml. The essential oil was not effective against Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC 25922, Salmonella enterica ssp. Arizonae CIP 81, Bacillus cereus, Enterococcus faecalis. The essential oil of C. schoenanthus has an antibacterial effect against, Klebsiella pneumoniae, Listeria innocua, Staphylococcus aureus, the Highest inhibition was noted against Klebsiella pneumoniae (36,67±1,53mm).
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    Biological properties and Acute Toxicity Study of Copper oxide nanoparticles prepared by aqueous leaves extract of Portulaca oleracea
    (A & V Publications, 2020-06-03) Atoussi, Ouidad; Chetehouna, Sara; Derouiche, Samir
    The aim of this study is to use the purslan (Portulacae oleracea L) leaves aqueous extract in order to prepare copper nanoparticles and to explore antioxidant and anti-inflammatory activity of aqueous extract of P.oleracea L and CuNPs. The nanoparticles were characterized from structural and morphological point of view by using analytical techniques such as: UV-Vis spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM). Antioxidant activity of purslane and CuNPs was studied done FRAP assay also the anti-inflammatory and hemolysis essay were studies. The acute toxicity test was applied in Wistar albino rats. Obtain results show that the SEM analysis revealed that the particle size was found to be ranging under 46 nm. On the other hand, the copper nanoparticles and purslan possessed the reducing capacity when IC50 value was 68, 316 μg/ml and 79, 675 μg/ml respectively, the anti-inflammatory ability while IC50 value was 77, 503 μg/ml and 60, 727 μg/ml respectively. In this study, the toxicity test showed no mortality or behavioral change up to 20 mg/kg of albino Wistar rats CuNPs. We concluded that Portulaca oleracea L has potential properties as biocatalyst or natural stabilizers for CuNPs synthesis. Each CuNPs as P.oleracea L leaves extract were have a reducing and anti-inflammatory capacity which can be protect the cells against the degenerative effects of Reactive Oxygen Species (ROS).
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    Chemical composition and antioxidant activity of Apis mellifera bee pollen from northwest Algeria
    (Journal of Fundamental and Applied Sciences, 2012-12-31) Rebiai, Abdelkrim; Lanez, Touhami
    The aim of this study was to assess the nutritional composition and antioxidant activity of bee pollen produced in the North western region of Algeria. The content of total phenolic compounds, flavonoids, and antioxidant activity using the molybdate ion reduction method were determined. The mean contents of phenolic compounds and total flavonoids were 30.46 ± 8.22 mg of GAE.g–1 pollen and 8.92 ± 5.5 mg of RE.g–1 pollen, respectively. High antioxidant activities were found for the molybdate ion reduction method, with values that ranged from 71.95 to 101.5 μg of GAE.g –1 pollen. The bee pollen of Boufarik showed high antioxidant activity probably due to the high content of phenolic compounds present in pollen.
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    Comparative Analysis of Multiple Linear Regression and Generalized Regression Neural Network for Water Temperature Estimation of Fontaine Des Gazelles Reservoir Dam-Biskra, Algeria
    (The International Society for Engineers and Researchers (ISER). Istanbul. Turquie, 2024-02-06) MEZIANI, ASSIA
    Our research centers on estimating the water temperature of Fontaine de Gazelles Reservoir Dam by analyzing air temperature, relative humidity, solar radiation, atmospheric pressure, wind speed, and precipitation. These variables collectively impact water temperature, reflecting the thermal environment, water vapor content, solar energy, air density, wind-induced processes, and precipitation cooling. We employ Multiple Linear Regression (MLR) and Generalized Regression Neural Networks (GRNN) models for accurate estimates. MLR captures linear dependencies among climate variables, while GRNN model complex nonlinear relationships. Trained on historical data and real-time measurements, both MLR and GRNN demonstrate strong capabilities. MLR achieves high Nash-Sutcliffe Efficiency (0.991 to 0.997) and low Root Mean Squared Error (0.406 to 0.625), while GRNN achieves similar values. Both models consistently exceed a coefficient of determination R2 equal 0.99, indicating a robust correlation, and display low Mean Absolute Error (0.236 to 0.391), affirming their accuracy. This attests to MLR and GRNN's reliability in estimating water temperature for the Fontaine de Gazelles Reservoir Dam. الملخص (باللغة العربية) تركز بحثنا على تقدير درجة حرارة الماء في سد خزان فونتين دي غازيل المتواجد ببسكرة من خلال تحليل درجة حرارة الهواء والرطوبة النسبية والإشعاع الشمسي والضغط الجوي وسرعة الرياح وهطول الأمطار. تؤثر هذه المتغيرات الجوية بشكل اساسي على درجة حرارة الماء، مما يعكس على البيئة ومياه السد، والطاقة الشمسية، وكثافة الهواء، والعمليات التي تحدثها الرياح، والأمطار. في هذا العمل استخدمنا نموذجين الاول يعتمد على الانحدار الخطي والثاني على الشبكات العصبية للانحدار المعمم. للحصول على تقديرات دقيقة لدرجة حرارة مياه السد. النتائج كانت كتالي يلتقط نموذج الانحدار الخطي التبعيات الخطية بين متغيرات المناخ، في حين تقوم الشبكات العصبية بنمذجة العلاقات غير الخطية المعقدة. ومن خلال تدريبهما على البيانات الجوية والقياسات في الوقت الفعلي، أظهر كل من نموذج الانحدار الخطي والشبكات العصبية تقدرات ممتازة. لدرجات حرارة المياه للسد حيث يحقق نموذج الانحدار الخطي كفاءة عالية (حسب قيم ناش للنموذج يتراوح من 0.991 إلى 0.997) والخطأ التربيعي لمتوسط الجذر المنخفض (0.406 إلى 0.625)، بينما تحقق الشبكات العصبية قيمًا مماثلة. يتجاوز كلا النموذجين باستمرار معامل الارتباط الذي يساوي 0.99، مما يشير إلى وجود ارتباط قوي للمتغيرات، ويعرض متوسط خطأ مطلق منخفض (0.236 إلى 0.391)، مما يؤكد دقتهما. وهذا ياكدعلى فعالية ودقة النموذجين في تقدير درجة حرارة المياه لسد فونتين دي غازيل المتواجد ببسكرة.
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    Comparative study of hemispherical solar distillers iron-fins
    (Elsevier, 2021-04-10) Attia, Mohammed El Hadi; Kabeel, AE; Abdelgaied, Mohamed; El-Maghlany, Wael M; Bellila, Abdelkader
    The ratio between surface area to volume is higher in spherical distillers than traditional single slope distillers. To utilize this advantage, the study measures hemispherical distillers performance. Iron fins have been employed at different lengths and spacing in absorber plate to increase absorption area and transmit heat from hot basin plate to saline water. Three configurations have been tested under same operating conditions. First, the conventional hemispherical distiller without fins representing the reference case (CHSS). Second, the modified hemispherical distiller with fins set at 5 cm spacing (MHSS-IF5). Third, the modified hemispherical distiller with fins set at 7 cm (MHSS-IF7). Fins diameter is constant at 1.2 cm with tested length of 3, 2 and 1 cm starting from the basin absorber plate. Basin salt water is fixed at 3 cm (maximum fin length) during experiments. Results prove that fin utilization is important in performance enhancement. However, fin length effect on performance depends on spacing due to shading effect in distillers. Consequently, the fins utilization improves distiller productivity up to 56.73% with best configuration of MHSS-IF7 with 2 cm fin length and 7 cm spacing. The fins utilization is not costly in the hemispherical distiller with positive enhancement contribution leads to minimum cost per liter of produced water.
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    Comparative Study of Honey Collected from Different Flora of Algeria
    (Journal of Fundamental and Applied Sciences, 2014) Rebiai, A; Lanez, T
    The aim of the present study was to evaluate the physical and chemical properties of five Algerian unifloral types of honey. Several physical parameters of honey, such as pH, moisture content, electrical conductivity, total dissolved solids, color intensity and total sugar content, were measured. The mean pH, moisture content, EC and water insoluble solids of Algerian honey were 4.41± 0.58, 15.3 ± 1.5%, 0.324± 0.116 mS/cm and 0.141± 0.065%, respectively. The mean color was 81 ± 72 mm Pfund. The majority of honey samples test results (moisture content, electric conductivity and acidity) levels were within the acceptable range of world honey standards.
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    A comparative study on structural and optical properties of ZnO and Al-doped ZnO thin films obtained by ultrasonic spray method using different solvents
    (Urban & Fischer, 2014-07-01) Gahtar, Abdelouahab; Rahal, Achour; Benhaoua, Boubaker; Benramache, Said
    Abstract Transparent conducting ZnO and Al doped ZnO thin films were deposited on glass substrate by ultrasonic spray method. The thin films with concentration of 0.1 M were deposited at 350 °C with 2 min of deposition time. The effects of ethanol and methanol solution before and after doping on the structural, optical and electrical properties were examined. The DRX analyses indicated that ZnO films have nanocrystalline nature and hexagonal wurtzite structure with (1 0 0) and (0 0 2) preferential orientation corresponding to ZnO films resulting from methanol and ethanol solution, respectively. The crystallinity of the thin films improved with methanol solution after doping to (0 0 2) oriented. All films exhibit an average optical transparency about 90%, in the visible range. The band gaps values of ZnO thin films are increased after doping from 3.10 to 3.26 eV and 3.27 to 3.30 eV upon Al doping obtained by ethanol and methanol solution, respectively. The electrical conductivity increase from 7.5 to 15.2 (Ω cm)−1 of undoped to Al doped ZnO thin films prepared by using ethanol solution. However, for the methanol solution; the electrical conductivity of the film is stabilized after doping.
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    Comparison Study Between SVM and PWM Inverter in Sliding Mode Control of Active and Reactive Power Control of a DFIG for Variable Speed Wind Energy
    (İlhami ÇOLAK, 2012-09-18) Bekakra, Youcef; Ben Attous, Djilani
    t- In this paper, we present a comparative study between space vector modulation (SVM) and pulse width modulation (PWM) inverter in sliding mode control (SMC) of active and reactive power control of a doubly fed induction generator (DFIG) for variable speed wind energy. The feasibility and effectiveness of the two methods are demonstrated by simulation results. The obtained results showed that, the proposed SMC with SVM inverter have stator and rotor current with low harmonic distortion and low active and reactive powers ripples than PWM inverter.
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    Composition chimique et évaluation des activités biologiques de la partie aérienne d,une plante endémique Myrtus nivellei
    (University of eloued جامعة الوادي, 2017-10-05) Ramdane, Farah; Mahfoud, Hadj Mahammed; Ould Hadj Mohamed, Didi
    Les substances naturelles issues des végétaux ont des intérêts multiples mis à profit dans l'industrie: en alimentation, en cosmétologie et en dermopharmacie. Parmi ces composés on retrouve dans une grande mesure les métabolites secondaires qui se sont surtout illustrés en thérapeutique. Selon lalittérature, les composés d'origine naturelle présentent I'avantage d'une très grande diversité de structures chimiques et ils possèdent aussi un très large éventail d'activités biologiques, dans le but d'avoir des nouvelles ressources bioactive; nous avons réalisé une étude ethnobotanique dans le Hoggar afin de connaitre l'utilisation de cette plante dans la médecine populaire, ensuite Les constituants des huiles essentielles des parties aériennes de cette plante extraites par hydrodistillation ont été analysés par GC-MS. Cette analyse fait apparaître 24 composés représentant 98,87yo de I'huile total. Le 1,8 cineole (53,44%) est le composé majoritaire de cette huile suivi par 12,2, 6,7-tetramethyl-10- oxatricyclo 14.3.0.1(1,7)]decan-5-one (ll,73Yo), trans ocimene (7,54yo),linalyl propirionate (6,8t%) et lavandulyl acetate (5,24%). Cette huile a montré une activité importante contre le radical DPPH. L'activité antibactérienne de cette huile a été déterminée par la méthode de diffusion sur des souches Gram positif et d'autres Gram négatif, cette huile n'a pas montré une efficacité que sur la souche testée Listeria monocytogenes. Egalement l'huile de cette espèce a inhibé modérément la charge parasitaire testée particulièrement la souche Leishmania major
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    Control of methane flame properties by hydrogen fuel addition: Application to power plant combustion chamber
    (Pergamon, 2017-03-30) Bouras, Fethi; Attia, Mohammed El Hadi; Khaldi, Fouad; Si-Ameur, Mohammed
    This study presents a numerical investigation of the effects of mixing methane/hydrogen on turbulent combustion processes taking place in a burner similar to that integrated in gas turbine power plants. Thereby, in comparison to the reference case where the burner is fuelled by 100% of methane, the variations of the axial velocity field, temperature field and mass fraction of carbon monoxide field are examined for different percentages of hydrogen fuel injection. The computed results, obtained by using the software Fluent-CFD, are compared and validated against experimental reference data. Results show that the hydrogen addition to the methane has an impact on all physical and chemical parameters of the reactive system
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    Current Review on Herbal Pharmaceutical improve immune responses against COVID-19 infection
    (A&V Publications, 2020-07-01) Derouiche, Samir
    Coronavirus SARS-COV2 (COVID-19) represents the causative agent of a potentially fatal disease that is of great global public health concern. The pandemic outbreak of COVID-19 is rapidly spreading all over the world. This review aims to provide the role of Herbal Pharmaceutical in reducing the spread or complications of COVID-19 infection in the body of people. The evidence of generation of oxygen free radicals and oxidative stress is a key process in the onset of chronic disease which participate in the development of the systemic inflammatory response syndrome. Medicines of plant origin aroused a lot of interest due to their wide use, abundance, high efficacy and lack of secondary effects as an antioxidants and anti-inflammatory agents, antiviral efficacy or in their preventive efficacy of the immune system From it we suggest that the combination of conventional therapy and herbal medicine for patients infected with COVID-19 to reduce the complexities and development of the virus
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    Doubly-fed induction generator drive based WECS using fuzzy logic controller
    (Higher Education Press, 2015-09) Dida, Abdelhak; Ben Attous, Djilani
    The purpose of this paper is to improve the control performance of the variable speed, constant frequency doubly-fed induction generator in the wind turbine generation system by using fuzzy logic controllers. The control of the rotor-side converter is realized by stator flux oriented control, whereas the control of the grid-side converter is performed by a control strategy based on grid voltage orientation to maintain the DC-link voltage stability. An intelligent fuzzy inference system is proposed as an alternative of the conventional proportional and integral (PI) controller to overcome any disturbance, such as fast wind speed variation, short grid voltage fault, parameter variations and so on. Five fuzzy logic controllers are used in the rotor side converter (RSC) for maximum power point tracking (MPPT) algorithm, active and reactive power control loops, and another two fuzzy logic controllers for direct and quadratic rotor currents components control loops. The performances have been tested on 1.5 MW doubly-fed induction generator (DFIG) in a Matlab/Simulink software environment.
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    Effect of aluminum balls on the productivity of solar distillate
    (Elsevier, 2020-08-01) Attia, Mohammed El Hadi; Driss, Zied; Manokar, A Muthu; Sathyamurthy, Ravishankar
    Drinking water has become a real global problem, despite the abundance of unsaturated saltwater and colorless, which do not meet the requirements of the World Health Organization. The El Oued, in the southeastern part of Algeria, contains vast quantities of salt water and non-potable water. Solar distillation can be used as a solution to resolve this trouble. To provide drinking water, we use free sunlight to treat salt water. The traditional solar distillation device, which is one mile long (0.5×0.5 m), is designed to confirm the effectiveness of this solution. The traditional single slope solar distillation, its dimensions (0.5×0.5 m), is designed to confirm the effectiveness of this solution. Solar distillation is an environmental, economic and simple technique, but it needs some modifications to increase the distilled water production. In this work, we added aluminum balls inside the solar distillate box. In this work, we added 42 aluminum balls with a diameter of 2 cm inside a solar distillates box; positioned as follows (6 balls x 7 balls). The results showed that aluminum balls increased the distillation of distilled water by about 27.16 %.