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Abdellah</title> <meta name="description" content="Search results for: Zeroual Abdellah"> <meta name="keywords" content="Zeroual Abdellah"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Zeroual Abdellah"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 40</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Zeroual Abdellah</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">40</span> Investigation of the Mechanism, Régio and Sterioselectivity Using the 1,3-Dipolar Cycloaddition Reaction of Fused 1h-Pyrrole-2,3-Diones with Nitrones: Molecular Electron Density Theory Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ameur%20Soukaina">Ameur Soukaina</a>, <a href="https://publications.waset.org/abstracts/search?q=Zeroual%20Abdellah"> Zeroual Abdellah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mazoir%20Noureddine"> Mazoir Noureddine</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Molecular Electron Density Theory (MEDT) elucidates the regioselectivity of the [4+2] cycloaddition reaction between 3-aroylpyrrolo[1,2-α]quinoxaline-1,2,4(5H)-trione and butyl vinyl ether Regioselectivity and stereoselectivity. The regioselectivity mechanisms of these reactions were investigated by evaluating potential energy surfaces calculated for cycloaddition processes and DFT density-based reactivity indices. These methods have been successfully applied to predict preferred regioisomers for different method alternatives. Reactions were monitored by performing transition state optimizations, calculations of intrinsic reaction coordinates, and activation energies. The observed regioselectivity was rationalized using DFT-based reactivity descriptors such as the Parr function. Solvent effects were also investigated in 1,4-dioxane solvent using a field model for self-consistent reactions. The results were compared with experimental data to find good agreement. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cycloaddition" title="cycloaddition">cycloaddition</a>, <a href="https://publications.waset.org/abstracts/search?q=DFT" title=" DFT"> DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=ELF" title=" ELF"> ELF</a>, <a href="https://publications.waset.org/abstracts/search?q=MEDT" title=" MEDT"> MEDT</a>, <a href="https://publications.waset.org/abstracts/search?q=parr" title=" parr"> parr</a>, <a href="https://publications.waset.org/abstracts/search?q=stereoselectivit%C3%A9" title=" stereoselectivité"> stereoselectivité</a> </p> <a href="https://publications.waset.org/abstracts/148675/investigation-of-the-mechanism-regio-and-sterioselectivity-using-the-13-dipolar-cycloaddition-reaction-of-fused-1h-pyrrole-23-diones-with-nitrones-molecular-electron-density-theory-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/148675.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">108</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">39</span> Support Vector Regression Combined with Different Optimization Algorithms to Predict Global Solar Radiation on Horizontal Surfaces in Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Laidi%20Maamar">Laidi Maamar</a>, <a href="https://publications.waset.org/abstracts/search?q=Achwak%20Madani"> Achwak Madani</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20El%20Ahdj%20Abdellah"> Abdellah El Ahdj Abdellah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this work is to use Support Vector regression (SVR) combined with dragonfly, firefly, Bee Colony and particle swarm Optimization algorithm to predict global solar radiation on horizontal surfaces in some cities in Algeria. Combining these optimization algorithms with SVR aims principally to enhance accuracy by fine-tuning the parameters, speeding up the convergence of the SVR model, and exploring a larger search space efficiently; these parameters are the regularization parameter (C), kernel parameters, and epsilon parameter. By doing so, the aim is to improve the generalization and predictive accuracy of the SVR model. Overall, the aim is to leverage the strengths of both SVR and optimization algorithms to create a more powerful and effective regression model for various cities and under different climate conditions. Results demonstrate close agreement between predicted and measured data in terms of different metrics. In summary, SVM has proven to be a valuable tool in modeling global solar radiation, offering accurate predictions and demonstrating versatility when combined with other algorithms or used in hybrid forecasting models. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=support%20vector%20regression%20%28SVR%29" title="support vector regression (SVR)">support vector regression (SVR)</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization%20algorithms" title=" optimization algorithms"> optimization algorithms</a>, <a href="https://publications.waset.org/abstracts/search?q=global%20solar%20radiation%20prediction" title=" global solar radiation prediction"> global solar radiation prediction</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20forecasting%20models" title=" hybrid forecasting models"> hybrid forecasting models</a> </p> <a href="https://publications.waset.org/abstracts/186719/support-vector-regression-combined-with-different-optimization-algorithms-to-predict-global-solar-radiation-on-horizontal-surfaces-in-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186719.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">35</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">38</span> Exploitation of the Solvent Effect and the Mechanism of the Cycloaddition Reaction Between 2-Chlorobenzimidazole and Benzonitrile N-Oxide</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Abdoul-Hakim">M. Abdoul-Hakim</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Zeroual"> A. Zeroual</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Garmes"> H. Garmes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> 2-Chlorobenzimidazoles are amphoteric compounds and versatile intermediates for the construction of polycyclic heterocycles. In this theoretical study performed by DFT at the B3LYP/6-311+G(d,p) level, we showed that the most likely route to obtain benzimidazo[1,2-d]oxadiazole from the reaction of 2-Chlorobenzimidazole with benzonitrile N-oxide involves the presence of anionic species, a concerted mechanism is not possible. The inclusion of the effect of the polar protic solvent (MeOH) favors the course of the reaction. The key interactions causing bond formation and breakage were identified by ELF topological analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=benzimidazo%5B1" title="benzimidazo[1">benzimidazo[1</a>, <a href="https://publications.waset.org/abstracts/search?q=2-d%5Doxadiazole" title=" 2-d]oxadiazole"> 2-d]oxadiazole</a>, <a href="https://publications.waset.org/abstracts/search?q=benzonitrile%20N-oxide" title=" benzonitrile N-oxide"> benzonitrile N-oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=DFT" title=" DFT"> DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=ELF" title=" ELF"> ELF</a>, <a href="https://publications.waset.org/abstracts/search?q=polycyclic%20heterocycles" title=" polycyclic heterocycles"> polycyclic heterocycles</a> </p> <a href="https://publications.waset.org/abstracts/148777/exploitation-of-the-solvent-effect-and-the-mechanism-of-the-cycloaddition-reaction-between-2-chlorobenzimidazole-and-benzonitrile-n-oxide" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/148777.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">101</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">37</span> Theoretical Evaluation of the Preparation of Polycyclic Benzimidazole Derivatives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Abdoul-Hakim">M. Abdoul-Hakim</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Zeroual"> A. Zeroual</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Garmes"> H. Garmes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, the reaction of 2-chlorobenzimidazole with two distinct 1,3-dipoles such as benzonitrile N-oxide and an azomethine imine was carried out by DFT at the B3LYP/6-311+G(d, p) level to understand the effect of solvent (MeOH). The results show that MeOH has a significant effect on the evolution of the reaction. The charge transfer interactions n(O) → σ*(C-Cl), n(N)→σ*(C-Cl) and σ(N-C) →σ*(C-Cl) stabilize the transition states in an intramolecular nucleophilic substitution (SNi) step of the imidoyl group. Finally, this study provides a theoretical basis for the design of different polycyclic benzimidazole. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=azomethine%20imine" title="azomethine imine">azomethine imine</a>, <a href="https://publications.waset.org/abstracts/search?q=benzonitrile%20N-oxide" title=" benzonitrile N-oxide"> benzonitrile N-oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=DFT" title=" DFT"> DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=intramolecular%20nucleophilic%20substitution%20%28SNi%29" title=" intramolecular nucleophilic substitution (SNi)"> intramolecular nucleophilic substitution (SNi)</a>, <a href="https://publications.waset.org/abstracts/search?q=polycyclic%20benzimidazole" title=" polycyclic benzimidazole"> polycyclic benzimidazole</a> </p> <a href="https://publications.waset.org/abstracts/148584/theoretical-evaluation-of-the-preparation-of-polycyclic-benzimidazole-derivatives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/148584.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">123</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">36</span> Study of the Protection of Induction Motors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bencheikh%20Abdellah">Bencheikh Abdellah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we present a mathematical model dedicated to the simulation breaks bars in a three-phase cage induction motor. This model is based on a mesh circuit representing the rotor cage. The tested simulation allowed us to demonstrate the effectiveness of this model to describe the behavior of the machine in a healthy state, failure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AC%20motors" title="AC motors">AC motors</a>, <a href="https://publications.waset.org/abstracts/search?q=squirrel%20cage" title=" squirrel cage"> squirrel cage</a>, <a href="https://publications.waset.org/abstracts/search?q=diagnostics" title=" diagnostics"> diagnostics</a>, <a href="https://publications.waset.org/abstracts/search?q=MATLAB" title=" MATLAB"> MATLAB</a>, <a href="https://publications.waset.org/abstracts/search?q=SIMULINK" title=" SIMULINK"> SIMULINK</a> </p> <a href="https://publications.waset.org/abstracts/19635/study-of-the-protection-of-induction-motors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19635.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">438</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">35</span> Theoretical Evaluation of the Effect of Solvent on the Feasibility of the Reaction of 2-Chlorobenzimidazole With Four N,N′-Cyclic Azomethine Imines to Construct Polycyclic Benzimidazoles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Abdoul-Hakim">Mohamed Abdoul-Hakim</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Zeroual"> A. Zeroual</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Garmes"> H. Garmes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we theoretically evaluated the reactivity of four 4-methyl-3-oxo-1,2-pyrazolidinium ylides with 2-Chlorobenzimidazole in MeOH in basic medium using DFT at the B3LYP/6-311+G(d,p) level. The analysis of the results shows that apart from its ability to retain its electrons, the deprotonated 2-Chlorobenzimidazole has a higher nucleophilic character. The reaction requires energy input to initiate the nucleophilic attack of the 2-Chlorobenzimidazole anion, and the inclusion of the solvent effect facilitates the formation of two regioisomers via an intramolecular vinyl nucleophilic substitution (SNVi). The transition states of this latter step are stabilized by charge transfer interactions σ(N-C) →σ*(C-Cl) for the more favorable regioisomer and n(N)→σ*(C-Cl) for the other regioisomer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=benzonitrile%20N-oxide" title="benzonitrile N-oxide">benzonitrile N-oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=DFT" title="DFT">DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=intramolecular%20vinyl%20nucleophilic%20substitution%20%28SNVi%29" title=" intramolecular vinyl nucleophilic substitution (SNVi)"> intramolecular vinyl nucleophilic substitution (SNVi)</a>, <a href="https://publications.waset.org/abstracts/search?q=4-methyl-3-OXO-1" title=" 4-methyl-3-OXO-1"> 4-methyl-3-OXO-1</a>, <a href="https://publications.waset.org/abstracts/search?q=2-pyrazolidinium%20ylides" title=" 2-pyrazolidinium ylides"> 2-pyrazolidinium ylides</a> </p> <a href="https://publications.waset.org/abstracts/148778/theoretical-evaluation-of-the-effect-of-solvent-on-the-feasibility-of-the-reaction-of-2-chlorobenzimidazole-with-four-nn-cyclic-azomethine-imines-to-construct-polycyclic-benzimidazoles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/148778.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">139</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">34</span> Theoretical Evaluation of Oxirane and Aziridine Opening Regioselectivity, Solvent Effect, and Strength of Nucleophilic and Nucleofugal Groups for the Preparation of Benzimidazole-Fused 1,4-Benzoxazepine</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Abdoul-Hakim">M. Abdoul-Hakim</a>, <a href="https://publications.waset.org/abstracts/search?q=a.%20Zeroual">a. Zeroual</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Garmes">H. Garmes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In a route for the preparation of 1,4-benzoxazepine fused to benzimidazole, the use of 2-(2-methoxyphenyl)-benzimidazole or styrene-derived N-tosylaziridine does not give the desired products. On this basis, we theoretically studied this reaction using DFT at the B3LYP/6-31+G(d) level. The analysis of the results shows a preferential nucleophilic attack of 2-(2-fluorophenyl)-benzimidazole on the terminal carbon atom of the Alkylepoxides and on the substituted carbon of N-tosylaziridine. Taking into account the solvent effect (DMF) makes the reactions spontaneous for the opening of epoxides and N-tosylaziridine and disfavors the intramolecularnucleophilic aromatic substitution reaction step of the products of the attack of 2-(2-methoxyphenyl)benzimidazole on an epoxide and those of the opening of N-tosylaziridine, which is consistent with the experiment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alkylepoxides" title="alkylepoxides">alkylepoxides</a>, <a href="https://publications.waset.org/abstracts/search?q=4-benzoxazepine%20fused%20to%20benzimidazole%20imine" title=" 4-benzoxazepine fused to benzimidazole imine"> 4-benzoxazepine fused to benzimidazole imine</a>, <a href="https://publications.waset.org/abstracts/search?q=benzonitrile%20N-oxide" title=" benzonitrile N-oxide"> benzonitrile N-oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=DFT" title=" DFT"> DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=intramolecular%20nucleophilic%20aromatic%20substitution" title=" intramolecular nucleophilic aromatic substitution"> intramolecular nucleophilic aromatic substitution</a>, <a href="https://publications.waset.org/abstracts/search?q=N-tosyl%20aziridine" title=" N-tosyl aziridine"> N-tosyl aziridine</a> </p> <a href="https://publications.waset.org/abstracts/148785/theoretical-evaluation-of-oxirane-and-aziridine-opening-regioselectivity-solvent-effect-and-strength-of-nucleophilic-and-nucleofugal-groups-for-the-preparation-of-benzimidazole-fused-14-benzoxazepine" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/148785.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">142</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">33</span> Efficient Backup Protection for Hybrid WDM/TDM GPON System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elmahdi%20Mohammadine">Elmahdi Mohammadine</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahouzi%20Esmail"> Ahouzi Esmail</a>, <a href="https://publications.waset.org/abstracts/search?q=Najid%20Abdellah"> Najid Abdellah </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This contribution aims to present a new protected hybrid WDM/TDM PON architecture using Wavelength Selective Switches and Optical Line Protection devices. The objective from using these technologies is to improve flexibility and enhance the protection of GPON networks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wavlenght%20Division%20Multiplexed%20Passive%20Optical%20Network%20%28WDM-PON%29" title="Wavlenght Division Multiplexed Passive Optical Network (WDM-PON)">Wavlenght Division Multiplexed Passive Optical Network (WDM-PON)</a>, <a href="https://publications.waset.org/abstracts/search?q=Time%20Division%20Multiplexed%20%20PON%20%28TDM-PON%29" title=" Time Division Multiplexed PON (TDM-PON)"> Time Division Multiplexed PON (TDM-PON)</a>, <a href="https://publications.waset.org/abstracts/search?q=architecture" title=" architecture"> architecture</a>, <a href="https://publications.waset.org/abstracts/search?q=Protection" title=" Protection"> Protection</a>, <a href="https://publications.waset.org/abstracts/search?q=Wavelength%20Selective%20Switches%20%28WSS%29" title=" Wavelength Selective Switches (WSS)"> Wavelength Selective Switches (WSS)</a>, <a href="https://publications.waset.org/abstracts/search?q=Optical%20Line%20Protection%20%28OLP%29" title=" Optical Line Protection (OLP)"> Optical Line Protection (OLP)</a> </p> <a href="https://publications.waset.org/abstracts/18804/efficient-backup-protection-for-hybrid-wdmtdm-gpon-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18804.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">542</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">32</span> Static Relaxation of Glass Fiber Reinforced Pipes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Y.%20Abdellah">Mohammed Y. Abdellah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20K.%20Hassan"> Mohamed K. Hassan</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20F.%20Mohamed"> A. F. Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Shadi%20M.%20Munshi"> Shadi M. Munshi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20Hashem"> A. M. Hashem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Pips made from glass fiber reinforced polymer has competitive role in petroleum industry. The need of evaluating the mechanical behavior of (GRP) pipes is essential objects. Stress relaxation illustrates how polymers relieve stress under constant strain. Static relaxation test is carried out at room temperature. The material gives poor static relaxation strength, two loading cycles have been observed for the tested specimen. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=GRP" title="GRP">GRP</a>, <a href="https://publications.waset.org/abstracts/search?q=sandwich%20composite%20material" title=" sandwich composite material"> sandwich composite material</a>, <a href="https://publications.waset.org/abstracts/search?q=static%20relaxation" title=" static relaxation"> static relaxation</a>, <a href="https://publications.waset.org/abstracts/search?q=stress%20relief" title=" stress relief"> stress relief</a> </p> <a href="https://publications.waset.org/abstracts/23225/static-relaxation-of-glass-fiber-reinforced-pipes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23225.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">625</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">31</span> Experimental and Numerical Modeling of Dynamic Axial Crushing of a Composite Glass/PEHD</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahmoudi%20Noureddine">Mahmoudi Noureddine</a>, <a href="https://publications.waset.org/abstracts/search?q=Kaou%20Abdellah"> Kaou Abdellah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Energy absorption is a major requirement for automotive structures. Although crashworthy structures of composite based glass fiber have exhibited energy absorption greater than similar at other composites structures, the crush process in many cases is accompanied by fracture, rather than by plastic deformation. The crash experiments show that the tubes are crushed in progressive manner start from one end of the tubes and delamination takes place between the layers. To better understand details of the crash process, ABAQUS finite element code is used. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Energy%20absorption" title="Energy absorption">Energy absorption</a>, <a href="https://publications.waset.org/abstracts/search?q=crash" title=" crash"> crash</a>, <a href="https://publications.waset.org/abstracts/search?q=PEHD" title=" PEHD "> PEHD </a> </p> <a href="https://publications.waset.org/abstracts/23329/experimental-and-numerical-modeling-of-dynamic-axial-crushing-of-a-composite-glasspehd" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23329.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">499</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">30</span> Efficient Hydrosilylation of Functionalized Alkenes via Heterogeneous Zinc Oxide Nanoparticle Catalysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahlam%20Chennani">Ahlam Chennani</a>, <a href="https://publications.waset.org/abstracts/search?q=Nadia%20Anter"> Nadia Anter</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelouahed%20M%C3%A9daghri%20Alaoui"> Abdelouahed Médaghri Alaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Hannioui"> Abdellah Hannioui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Non-precious metals such as zinc, copper, iron, and nickel are promising hydrosilylation catalysts due to their abundance, affordability, and low toxicity. This study focuses on the preparation of zinc nanoparticles using a simple, scalable method. Advanced techniques such as X-ray diffraction (XRD) and transmission electron microscopy (TEM) are used to characterize these catalysts, revealing their crystal structure and morphology. ZnO nanoparticles demonstrate high efficiency and selectivity in hydrosilylation reactions, producing silylated products. These results highlight the potential of ZnO nanocatalysts for advanced chemical transformations and practical applications in various industrial fields. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanoparticles" title="nanoparticles">nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrosilylation" title=" hydrosilylation"> hydrosilylation</a>, <a href="https://publications.waset.org/abstracts/search?q=catalysts" title=" catalysts"> catalysts</a>, <a href="https://publications.waset.org/abstracts/search?q=non-precious%20metal" title=" non-precious metal"> non-precious metal</a> </p> <a href="https://publications.waset.org/abstracts/188400/efficient-hydrosilylation-of-functionalized-alkenes-via-heterogeneous-zinc-oxide-nanoparticle-catalysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188400.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">26</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">29</span> A Review of Security Attacks and Intrusion Detection Schemes in Wireless Sensor Networks: A Survey</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maleh%20Yassine">Maleh Yassine</a>, <a href="https://publications.waset.org/abstracts/search?q=Ezzati%20Abdellah"> Ezzati Abdellah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wireless Sensor Networks (WSNs) are currently used in different industrial and consumer applications, such as earth monitoring, health related applications, natural disaster prevention, and many other areas. Security is one of the major aspects of wireless sensor networks due to the resource limitations of sensor nodes. However, these networks are facing several threats that affect their functioning and their life. In this paper we present security attacks in wireless sensor networks, and we focus on a review and analysis of the recent Intrusion Detection schemes in WSNs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wireless%20sensor%20networks" title="wireless sensor networks">wireless sensor networks</a>, <a href="https://publications.waset.org/abstracts/search?q=security%20attack" title=" security attack"> security attack</a>, <a href="https://publications.waset.org/abstracts/search?q=denial%20of%20service" title=" denial of service"> denial of service</a>, <a href="https://publications.waset.org/abstracts/search?q=IDS" title=" IDS"> IDS</a>, <a href="https://publications.waset.org/abstracts/search?q=cluster-based%20model" title=" cluster-based model"> cluster-based model</a>, <a href="https://publications.waset.org/abstracts/search?q=signature%20based%20IDS" title=" signature based IDS"> signature based IDS</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20IDS" title=" hybrid IDS"> hybrid IDS</a> </p> <a href="https://publications.waset.org/abstracts/5249/a-review-of-security-attacks-and-intrusion-detection-schemes-in-wireless-sensor-networks-a-survey" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5249.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">384</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28</span> Monitoring of Forest Cover Dynamics in the High Atlas of Morocco (Zaouit Ahansal) Using Remote Sensing Techniques and GIS</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelaziz%20Moujane">Abdelaziz Moujane</a>, <a href="https://publications.waset.org/abstracts/search?q=Abedelali%20Boulli"> Abedelali Boulli</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Ouigmane"> Abdellah Ouigmane</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present work focuses on the assessment of forestlandscape changes in the region of ZaouitAhansal, usingmultitemporal satellite images at high spatial resolution.Severalremotesensingmethodswereappliednamely: The supervised classification algorithm and NDVI whichwerecombined in a GIS environment to quantify the extent and change in density of forest stands (holmoak, juniper, thya, Aleppo pine, crops, and others).The resultsobtainedshowedthat the forest of ZaouitAhansal has undergonesignificantdegradationresulting in a decrease in the area of juniper, cedar, and zeenoak, as well as an increase in the area of baresoil and agricultural land. The remotesensing data providedsatisfactoryresults for identifying and quantifying changes in forestcover. In addition, thisstudycould serve as a reference for the development of management strategies and restoration programs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=remote%20sensing" title="remote sensing">remote sensing</a>, <a href="https://publications.waset.org/abstracts/search?q=GIS" title=" GIS"> GIS</a>, <a href="https://publications.waset.org/abstracts/search?q=satellite%20image" title=" satellite image"> satellite image</a>, <a href="https://publications.waset.org/abstracts/search?q=NDVI" title=" NDVI"> NDVI</a>, <a href="https://publications.waset.org/abstracts/search?q=deforestation" title=" deforestation"> deforestation</a>, <a href="https://publications.waset.org/abstracts/search?q=zaouit%20ahansal" title=" zaouit ahansal"> zaouit ahansal</a> </p> <a href="https://publications.waset.org/abstracts/147105/monitoring-of-forest-cover-dynamics-in-the-high-atlas-of-morocco-zaouit-ahansal-using-remote-sensing-techniques-and-gis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/147105.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">153</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">27</span> The Impact of the Number of Neurons in the Hidden Layer on the Performance of MLP Neural Network: Application to the Fast Identification of Toxics Gases</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Slimane%20Ouhmad">Slimane Ouhmad</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Halimi"> Abdellah Halimi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we have applied neural networks method MLP type to a database from an array of six sensors for the detection of three toxic gases. As the choice of the number of hidden layers and the weight values has a great influence on the convergence of the learning algorithm, we proposed, in this article, a mathematical formulation to determine the optimal number of hidden layers and good weight values based on the method of back propagation of errors. The results of this modeling have improved discrimination of these gases on the one hand, and optimize the computation time on the other hand, the comparison to other results achieved in this case. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=MLP%20Neural%20Network" title="MLP Neural Network">MLP Neural Network</a>, <a href="https://publications.waset.org/abstracts/search?q=back-propagation" title=" back-propagation"> back-propagation</a>, <a href="https://publications.waset.org/abstracts/search?q=number%20of%20neurons%20in%20the%20hidden%20layer" title=" number of neurons in the hidden layer"> number of neurons in the hidden layer</a>, <a href="https://publications.waset.org/abstracts/search?q=identification" title=" identification"> identification</a>, <a href="https://publications.waset.org/abstracts/search?q=computing%20time" title=" computing time"> computing time</a> </p> <a href="https://publications.waset.org/abstracts/19653/the-impact-of-the-number-of-neurons-in-the-hidden-layer-on-the-performance-of-mlp-neural-network-application-to-the-fast-identification-of-toxics-gases" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19653.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">347</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">26</span> Power Control of DFIG in WECS Using Backstipping and Sliding Mode Controller</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Boualouch">Abdellah Boualouch</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Essadki"> Ahmed Essadki</a>, <a href="https://publications.waset.org/abstracts/search?q=Tamou%20Nasser"> Tamou Nasser</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Boukhriss"> Ali Boukhriss</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellatif%20Frigui"> Abdellatif Frigui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a power control for a Doubly Fed Induction Generator (DFIG) using in Wind Energy Conversion System (WECS) connected to the grid. The proposed control strategy employs two nonlinear controllers, Backstipping (BSC) and sliding-mode controller (SMC) scheme to directly calculate the required rotor control voltage so as to eliminate the instantaneous errors of active and reactive powers. In this paper the advantages of BSC and SMC are presented, the performance and robustness of this two controller’s strategy are compared between them. First, we present a model of wind turbine and DFIG machine, then a synthesis of the controllers and their application in the DFIG power control. Simulation results on a 1.5MW grid-connected DFIG system are provided by MATLAB/Simulink. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=backstipping" title="backstipping">backstipping</a>, <a href="https://publications.waset.org/abstracts/search?q=DFIG" title=" DFIG"> DFIG</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20control" title=" power control"> power control</a>, <a href="https://publications.waset.org/abstracts/search?q=sliding-mode" title=" sliding-mode"> sliding-mode</a>, <a href="https://publications.waset.org/abstracts/search?q=WESC" title=" WESC"> WESC</a> </p> <a href="https://publications.waset.org/abstracts/29449/power-control-of-dfig-in-wecs-using-backstipping-and-sliding-mode-controller" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29449.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">594</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">25</span> Clustering Based and Centralized Routing Table Topology of Control Protocol in Mobile Wireless Sensor Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mbida%20Mohamed">Mbida Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ezzati%20Abdellah"> Ezzati Abdellah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A strong challenge in the wireless sensor networks (WSN) is to save the energy and have a long life time in the network without having a high rate of loss information. However, topology control (TC) protocols are designed in a way that the network is divided and having a standard system of exchange packets between nodes. In this article, we will propose a clustering based and centralized routing table protocol of TC (CBCRT) which delegates a leader node that will encapsulate a single routing table in every cluster nodes. Hence, if a node wants to send packets to the sink, it requests the information's routing table of the current cluster from the node leader in order to root the packet. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mobile%20wireless%20sensor%20networks" title="mobile wireless sensor networks">mobile wireless sensor networks</a>, <a href="https://publications.waset.org/abstracts/search?q=routing" title=" routing"> routing</a>, <a href="https://publications.waset.org/abstracts/search?q=topology%20of%20control" title=" topology of control"> topology of control</a>, <a href="https://publications.waset.org/abstracts/search?q=protocols" title=" protocols"> protocols</a> </p> <a href="https://publications.waset.org/abstracts/54518/clustering-based-and-centralized-routing-table-topology-of-control-protocol-in-mobile-wireless-sensor-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54518.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">273</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">24</span> Parametrization of Piezoelectric Vibration Energy Harvesters for Low Power Embedded Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yannick%20Verbelen">Yannick Verbelen</a>, <a href="https://publications.waset.org/abstracts/search?q=Tim%20Dekegel"> Tim Dekegel</a>, <a href="https://publications.waset.org/abstracts/search?q=Ann%20Peeters"> Ann Peeters</a>, <a href="https://publications.waset.org/abstracts/search?q=Klara%20Stinders"> Klara Stinders</a>, <a href="https://publications.waset.org/abstracts/search?q=Niek%20Blondeel"> Niek Blondeel</a>, <a href="https://publications.waset.org/abstracts/search?q=Sam%20De%20Winne"> Sam De Winne</a>, <a href="https://publications.waset.org/abstracts/search?q=An%20Braeken"> An Braeken</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Touhafi"> Abdellah Touhafi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Matching an embedded electronic application with a cantilever vibration energy harvester remains a difficult endeavour due to the large number of factors influencing the output power. In the presented work, complementary balanced energy harvester parametrization is used as a methodology for simplification of harvester integration in electronic applications. This is achieved by a dual approach consisting of an adaptation of the general parametrization methodology in conjunction with a straight forward harvester benchmarking strategy. For this purpose, the design and implementation of a suitable user friendly cantilever energy harvester benchmarking platform is discussed. Its effectiveness is demonstrated by applying the methodology to a commercially available Mide V21BL vibration energy harvester, with excitation amplitude and frequency as variables. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=vibration%20energy%20harvesting" title="vibration energy harvesting">vibration energy harvesting</a>, <a href="https://publications.waset.org/abstracts/search?q=piezoelectrics" title=" piezoelectrics"> piezoelectrics</a>, <a href="https://publications.waset.org/abstracts/search?q=harvester%20parametrization" title=" harvester parametrization"> harvester parametrization</a>, <a href="https://publications.waset.org/abstracts/search?q=complementary%20balanced%20energy%20harvesting" title=" complementary balanced energy harvesting"> complementary balanced energy harvesting</a> </p> <a href="https://publications.waset.org/abstracts/46288/parametrization-of-piezoelectric-vibration-energy-harvesters-for-low-power-embedded-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46288.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">357</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">23</span> Influence of Percentage and Melting Temperature of Phase Change Material on the Thermal Behavior of a Hollow-Brick</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zakaria%20Aketouane">Zakaria Aketouane</a>, <a href="https://publications.waset.org/abstracts/search?q=Mustapha%20Malha"> Mustapha Malha</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Bah"> Abdellah Bah</a>, <a href="https://publications.waset.org/abstracts/search?q=Omar%20Ansari"> Omar Ansari</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Asbik"> Mohamed Asbik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present paper deals with the thermal performance of a hollow-brick filled with Phase Change Material (PCM). The main objective is to study the effect of percentage and melting temperature of the PCM on the thermal inertia and internal surface temperature of the hollow-brick. A numerical model based on the heat transfer equation and the apparent heat capacity method has been validated using experimental study from the literature. The results show that increasing the percentage of the PCM has a significant effect on time lag and decrement factor that define the thermal inertia; the internal temperature is reduced by 1.36°C to 5.39°C for a percentage from 11% to 71% in comparison to a brick without PCM. In addition, an appropriate melting temperature of 37°C has been deduced for the horizontal wall orientation in Rabat in comparison to 27°C and 47°C. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=appropriate%20melting%20temperature" title="appropriate melting temperature">appropriate melting temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=decrement%20factor" title=" decrement factor"> decrement factor</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20change%20material" title=" phase change material"> phase change material</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20inertia" title=" thermal inertia"> thermal inertia</a>, <a href="https://publications.waset.org/abstracts/search?q=time%20lag" title=" time lag"> time lag</a> </p> <a href="https://publications.waset.org/abstracts/79975/influence-of-percentage-and-melting-temperature-of-phase-change-material-on-the-thermal-behavior-of-a-hollow-brick" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79975.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">234</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">22</span> Anti-inflammatory and Hemostatic Activities of Methanolic Extract from Atriplex Halimus. Leaves</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yahia%20Massinissa">Yahia Massinissa</a>, <a href="https://publications.waset.org/abstracts/search?q=Benhouda%20Afaf"> Benhouda Afaf</a>, <a href="https://publications.waset.org/abstracts/search?q=Benbia%20Souhila"> Benbia Souhila</a>, <a href="https://publications.waset.org/abstracts/search?q=Meddour%20Noura"> Meddour Noura</a>, <a href="https://publications.waset.org/abstracts/search?q=Takellalet%20Karima"> Takellalet Karima</a>, <a href="https://publications.waset.org/abstracts/search?q=Zeroual%20Amina"> Zeroual Amina</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: chenopodiaceae family species are known for their important biological activity, in which Atriplex halimus belongs . However, the inflammatory effect of this plant leaves has not been studied. This work aimed at assessing the anti- inflammatory and hemostatic activities of the methanolic extract AHMeOH of Atriplex halimus’s leaves. Methods: The extract was obtained using sonication of leaves powder in 80 % methanol. The analysis of phenolic compounds was carried out using thin-layer chromatography (TLC).The anti-inflammatory activity was determined by studying the plasmical membrane stabilization and albumin denaturation inhibition, the hemostatic activity was evaluated by measuring the plasma in the blood. Results: Quantitative determination of total flavonoids reveals that AHMeOH is rich in flavonoids (16 ± 0.88 μg Q / mg extract) and polyphenols (20 ± 0.20 μg AG / mg extract). about anti-inflammatory activity, the tests show that AHMeOH has a significant effect (P≤0.05) of inhibiting hypotonic-induced hemolysis with concentrations (100 and 200 μg / ml) with 77.55 and 90% respectively, and heat-induced hemolysis with percentages 81.75% and 87.44% respectively with significant difference (P ≤0.05). The obtained results with this plant reveal that the inhibition of denaturation of albumin is dose dependent. The concentration of 400 μg / ml gives denaturation inhibition of 81.00 ± 17.70% and the concentration 600 μg / ml gives an effect of 82.95 ± 17.40%. Regarding the haemostatic activity our extract with the doses 10 mg / ml, 20 mg / ml and 30 mg / ml confer a decrease of the plasma recalcification time in the tube, these concentrations could prolong the time of coagulation significantly compared to the control (P≤0.001). This result is an interesting indication in favor of haemostatic activity of AHMeOH. Conclusion: Atriplex Halimus has a strong anti-inflammatory activity and constitutes a potential source for the development of new treatments. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=albumin" title="albumin">albumin</a>, <a href="https://publications.waset.org/abstracts/search?q=atriplex%20halimus" title=" atriplex halimus"> atriplex halimus</a>, <a href="https://publications.waset.org/abstracts/search?q=hemostatic%20activity" title=" hemostatic activity"> hemostatic activity</a>, <a href="https://publications.waset.org/abstracts/search?q=methanolic%20extract" title=" methanolic extract"> methanolic extract</a> </p> <a href="https://publications.waset.org/abstracts/183843/anti-inflammatory-and-hemostatic-activities-of-methanolic-extract-from-atriplex-halimus-leaves" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/183843.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">75</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">21</span> Numerical Method of Heat Transfer in Fin Profiles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Beghdadi%20Lotfi">Beghdadi Lotfi</a>, <a href="https://publications.waset.org/abstracts/search?q=Belkacem%20Abdellah"> Belkacem Abdellah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, a numerical method is proposed in order to solve the thermal performance problems of heat transfer of fins surfaces. The bidimensional temperature distribution on the longitudinal section of the fin is calculated by restoring to the finite volumes method. The heat flux dissipated by a generic profile fin is compared with the heat flux removed by the rectangular profile fin with the same length and volume. In this study, it is shown that a finite volume method for quadrilaterals unstructured mesh is developed to predict the two dimensional steady-state solutions of conduction equation, in order to determine the sinusoidal parameter values which optimize the fin effectiveness. In this scheme, based on the integration around the polygonal control volume, the derivatives of conduction equation must be converted into closed line integrals using same formulation of the Stokes theorem. The numerical results show good agreement with analytical results. To demonstrate the accuracy of the method, the absolute and root-mean square errors versus the grid size are examined quantitatively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Stokes%20theorem" title="Stokes theorem">Stokes theorem</a>, <a href="https://publications.waset.org/abstracts/search?q=unstructured%20grid" title=" unstructured grid"> unstructured grid</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer" title=" heat transfer"> heat transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=complex%20geometry" title=" complex geometry"> complex geometry</a> </p> <a href="https://publications.waset.org/abstracts/10461/numerical-method-of-heat-transfer-in-fin-profiles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10461.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">405</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">20</span> Assessing Distance Education Practices: Teachers Experience and Perceptions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Amraouy">Mohammed Amraouy</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostafa%20Bellafkih"> Mostafa Bellafkih</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Bennane"> Abdellah Bennane</a>, <a href="https://publications.waset.org/abstracts/search?q=Aziza%20Benomar"> Aziza Benomar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Distance education has become popular due to their ability to provide learning from almost anywhere and anytime. COVID-19 forced educational institutions to urgently introduce distance education to ensure pedagogical continuity, so all stakeholders were invited to adapt to this new paradigm. In order to identify strengths and weaknesses, the research focuses on the need to create an effective mechanism for evaluating distance education. The aims of this research were to explore and evaluate the use of digital media in general and official platforms in particular in distance education practices. To this end, we have developed and validated a questionnaire before administering it to a sample of 431 teachers in Morocco. Teachers reported lower knowledge and skills in the didactic use of ICT in the distance education process. In addition, although age and educative experience of the teachers continue to modulate the level of instrumental skills. Therefore, resources (digital resources and infrastructure) and the teachers’ ICT training present serious limitations, which require a training more focused on the distance educational paradigm and educational environments that allow teachers to create educational activities able to promote and facilitate the distance learning process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=distance%20education" title="distance education">distance education</a>, <a href="https://publications.waset.org/abstracts/search?q=e-learning" title=" e-learning"> e-learning</a>, <a href="https://publications.waset.org/abstracts/search?q=teachers%E2%80%99%20perceptions" title=" teachers’ perceptions"> teachers’ perceptions</a>, <a href="https://publications.waset.org/abstracts/search?q=assessment" title=" assessment"> assessment</a> </p> <a href="https://publications.waset.org/abstracts/147342/assessing-distance-education-practices-teachers-experience-and-perceptions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/147342.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">137</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">19</span> Quaternary Ammonium Salts Based Algerian Petroleum Products: Synthesis and Characterization</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Houria%20Hamitouche">Houria Hamitouche</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Khelifa"> Abdellah Khelifa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Quaternary ammonium salts (QACs) are the most common cationic surfactants of natural or synthetic origin usually. They possess one or more hydrophobic hydrocarbon chains and hydrophilic cationic group. In fact, the hydrophobic groups are derived from three main sources: petrochemicals, vegetable oils, and animal fats. These QACs have attracted the attention of chemists for a long time, due to their general simple synthesis and their broad application in several fields. They are important as ingredients of cosmetic products and are also used as corrosion inhibitors, in emulsion polymerization and textile processing. Within biological applications, QACs show a good antimicrobial activity and can be used as medicines, gene delivery agents or in DNA extraction methods. The 2004 worldwide annual consumption of QACs was reported as 500,000 tons. The petroleum product is considered a true reservoir of a variety of chemical species, which can be used in the synthesis of quaternary ammonium salts. The purpose of the present contribution is to synthesize the quaternary ammonium salts by Menschutkin reaction, via chloromethylation/quaternization sequences, from Algerian petroleum products namely: reformate, light naphtha and kerosene and characterize. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=quaternary%20ammonium%20salts" title="quaternary ammonium salts">quaternary ammonium salts</a>, <a href="https://publications.waset.org/abstracts/search?q=reformate" title=" reformate"> reformate</a>, <a href="https://publications.waset.org/abstracts/search?q=light%20naphtha" title=" light naphtha"> light naphtha</a>, <a href="https://publications.waset.org/abstracts/search?q=kerosene" title=" kerosene "> kerosene </a> </p> <a href="https://publications.waset.org/abstracts/32772/quaternary-ammonium-salts-based-algerian-petroleum-products-synthesis-and-characterization" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32772.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">335</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18</span> Risk Management and Security Practice in Customs Supply Chain: Application of Cross ABC Method to the Moroccan Customs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Hammadi">Lamia Hammadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Ait%20Ouhman"> Abdellah Ait Ouhman</a>, <a href="https://publications.waset.org/abstracts/search?q=Aomar%20Ibourk"> Aomar Ibourk</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is widely assumed that the case of Customs Supply Chain is classified as a complex system, due to not only the variety and large number of actors, but also their complex structural links, and the interactions between these actors, that’s why this system is subject to various types of Risks. The economic, political and social impacts of those risks are highly detrimental to countries, businesses and the public, for this reason, Risk management in the customs supply chain is becoming a crucial issue to ensure the sustainability, security and safety. The main characteristic of customs risk management approach is determining which goods and means of transport should be examined? To what extend? And where future compliance resources should be directed? The purposes of this article are, firstly to deal with the concept of customs supply chain, secondly present our risk management approach based on Cross Activity Based Costing (ABC) Method as an interactive tool to support decision making in customs risk management. Finally, analysis of case study of Moroccan customs to putting theory into practice and will thus draw together the various elements of a structured and efficient risk management approach. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cross%20ABC%20method" title="cross ABC method">cross ABC method</a>, <a href="https://publications.waset.org/abstracts/search?q=customs%20supply%20chain" title=" customs supply chain"> customs supply chain</a>, <a href="https://publications.waset.org/abstracts/search?q=risk" title=" risk"> risk</a>, <a href="https://publications.waset.org/abstracts/search?q=risk%20management" title=" risk management"> risk management</a> </p> <a href="https://publications.waset.org/abstracts/8638/risk-management-and-security-practice-in-customs-supply-chain-application-of-cross-abc-method-to-the-moroccan-customs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8638.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">379</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17</span> Essential Oil Encapsulated into Succinic Acid Modified Beta-Cyclodextrin: Characterization, Docking Study, and Antifungal Activity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amine%20Ez-Zoubi">Amine Ez-Zoubi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Farah"> Abdellah Farah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Because of their effectiveness and environmental safety, many essential oils have been investigated as biopesticides. Nevertheless, the encapsulation process is necessary to improve its physical, chemical, and biological properties. Therefore, the purpose of this paper was to study the physicochemical characteristics, and antifungal activity of the Artemisia Herba-Alba essential oil (HAEO) encapsulated in succinic acid modified β-CD (SACD). A yellowish oil was obtained from plant A. Herba-Alba using hydrodistillation and GC-MS was used to identify the chemical composition, in which α-Thujone (65.0%) was the main component in HAEO. The succinic acid has been esterified via the hydroxyl groups in β-CD to produce SACD. In addition, the inclusion complex formation of HAEO and SACD was generated according to the co-precipitation method and was analyzed by several techniques. The antifungal activity in vitro was examined against Botrytis cinerea by direct contact with a potato dextrose agar culture medium. At a 0.1 % concentration, the HAEO in encapsulated form showed higher potential for the control of B. cinerea when compared to the EO in free form (38.34 to 12%). Thus, these results produced evidence that the encapsulation of EOs in SACD can be useful for the development of B.cinerea inhibitors and a promising alternative biopesticide. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Artemisia%20Herba-Alba%20essential%20oil" title="Artemisia Herba-Alba essential oil">Artemisia Herba-Alba essential oil</a>, <a href="https://publications.waset.org/abstracts/search?q=succinic%20acid%20modified%20%CE%B2-cyclodextrin" title=" succinic acid modified β-cyclodextrin"> succinic acid modified β-cyclodextrin</a>, <a href="https://publications.waset.org/abstracts/search?q=inclusion%20complex" title=" inclusion complex"> inclusion complex</a>, <a href="https://publications.waset.org/abstracts/search?q=co-precipitation" title=" co-precipitation"> co-precipitation</a>, <a href="https://publications.waset.org/abstracts/search?q=Botrytis%20cinerea" title=" Botrytis cinerea"> Botrytis cinerea</a>, <a href="https://publications.waset.org/abstracts/search?q=direct%20contact" title=" direct contact"> direct contact</a> </p> <a href="https://publications.waset.org/abstracts/159612/essential-oil-encapsulated-into-succinic-acid-modified-beta-cyclodextrin-characterization-docking-study-and-antifungal-activity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/159612.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">87</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">16</span> Integrating of Multi-Criteria Decision Making and Spatial Data Warehouse in Geographic Information System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zohra%20Mekranfar">Zohra Mekranfar</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Saidi"> Ahmed Saidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Mebrek"> Abdellah Mebrek</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work aims to develop multi-criteria decision making (MCDM) and spatial data warehouse (SDW) methods, which will be integrated into a GIS according to a ‘GIS dominant’ approach. The GIS operating tools will be operational to operate the SDW. The MCDM methods can provide many solutions to a set of problems with various and multiple criteria. When the problem is so complex, integrating spatial dimension, it makes sense to combine the MCDM process with other approaches like data mining, ascending analyses, we present in this paper an experiment showing a geo-decisional methodology of SWD construction, On-line analytical processing (OLAP) technology which combines both basic multidimensional analysis and the concepts of data mining provides powerful tools to highlight inductions and information not obvious by traditional tools. However, these OLAP tools become more complex in the presence of the spatial dimension. The integration of OLAP with a GIS is the future geographic and spatial information solution. GIS offers advanced functions for the acquisition, storage, analysis, and display of geographic information. However, their effectiveness for complex spatial analysis is questionable due to their determinism and their decisional rigor. A prerequisite for the implementation of any analysis or exploration of spatial data requires the construction and structuring of a spatial data warehouse (SDW). This SDW must be easily usable by the GIS and by the tools offered by an OLAP system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=data%20warehouse" title="data warehouse">data warehouse</a>, <a href="https://publications.waset.org/abstracts/search?q=GIS" title=" GIS"> GIS</a>, <a href="https://publications.waset.org/abstracts/search?q=MCDM" title=" MCDM"> MCDM</a>, <a href="https://publications.waset.org/abstracts/search?q=SOLAP" title=" SOLAP"> SOLAP</a> </p> <a href="https://publications.waset.org/abstracts/131660/integrating-of-multi-criteria-decision-making-and-spatial-data-warehouse-in-geographic-information-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131660.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">177</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15</span> Analysis of Thermoelectric Coolers as Energy Harvesters for Low Power Embedded Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yannick%20Verbelen">Yannick Verbelen</a>, <a href="https://publications.waset.org/abstracts/search?q=Sam%20De%20Winne"> Sam De Winne</a>, <a href="https://publications.waset.org/abstracts/search?q=Niek%20Blondeel"> Niek Blondeel</a>, <a href="https://publications.waset.org/abstracts/search?q=Ann%20Peeters"> Ann Peeters</a>, <a href="https://publications.waset.org/abstracts/search?q=An%20Braeken"> An Braeken</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Touhafi"> Abdellah Touhafi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The growing popularity of solid state thermoelectric devices in cooling applications has sparked an increasing diversity of thermoelectric coolers (TECs) on the market, commonly known as “Peltier modules”. They can also be used as generators, converting a temperature difference into electric power, and opportunities are plentiful to make use of these devices as thermoelectric generators (TEGs) to supply energy to low power, autonomous embedded electronic applications. Their adoption as energy harvesters in this new domain of usage is obstructed by the complex thermoelectric models commonly associated with TEGs. Low cost TECs for the consumer market lack the required parameters to use the models because they are not intended for this mode of operation, thereby urging an alternative method to obtain electric power estimations in specific operating conditions. The design of the test setup implemented in this paper is specifically targeted at benchmarking commercial, off-the-shelf TECs for use as energy harvesters in domestic environments: applications with limited temperature differences and space available. The usefulness is demonstrated by testing and comparing single and multi stage TECs with different sizes. The effect of a boost converter stage on the thermoelectric end-to-end efficiency is also discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thermoelectric%20cooler" title="thermoelectric cooler">thermoelectric cooler</a>, <a href="https://publications.waset.org/abstracts/search?q=TEC" title=" TEC"> TEC</a>, <a href="https://publications.waset.org/abstracts/search?q=complementary%20balanced%20energy%20harvesting" title=" complementary balanced energy harvesting"> complementary balanced energy harvesting</a>, <a href="https://publications.waset.org/abstracts/search?q=step-up%20converter" title=" step-up converter"> step-up converter</a>, <a href="https://publications.waset.org/abstracts/search?q=DC%2FDC%20converter" title=" DC/DC converter"> DC/DC converter</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20harvesting" title=" energy harvesting"> energy harvesting</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20harvesting" title=" thermal harvesting"> thermal harvesting</a> </p> <a href="https://publications.waset.org/abstracts/62092/analysis-of-thermoelectric-coolers-as-energy-harvesters-for-low-power-embedded-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62092.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">261</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">14</span> Application of Active Chitosan Coating Incorporated with Spirulina Extract as a Potential Food Packaging Material for Enhancing Quality and Shelf Life of Shrimp</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rafik%20Balti">Rafik Balti</a>, <a href="https://publications.waset.org/abstracts/search?q=Nourhene%20Zayoud"> Nourhene Zayoud</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Ben%20Mansour"> Mohamed Ben Mansour</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Arhaliass"> Abdellah Arhaliass</a>, <a href="https://publications.waset.org/abstracts/search?q=Anthony%20Masse"> Anthony Masse</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Application of edible films and coatings with natural active compounds for enhancing storage stability of food products is a promising active packaging approach. Shrimp are generally known as valuable seafood products around the world because of their delicacy and good nutritional. However, shrimp is highly vulnerable to quality deterioration associated with biochemical, microbiological or physical changes during postmortem storage, which results in the limited shelf life of the product. Chitosan is considered as a functional packaging component for maintaining the quality and increasing the shelf life of perishable foods. The present study was conducted to evaluate edible coating of crab chitosan containing variable levels of ethanolic extract of Spirulina on microbiological (mesophilic aerobic, psychrotrophic, lactic acid bacteria, and enterobacteriacea), chemical (pH, TVB-N, TMA-N, PV, TBARS) and sensory (odor, color, texture, taste, and overall acceptance) properties of shrimp during refrigerated storage. Also, textural and color characteristics of coated shrimp were performed. According to the obtained results, crab chitosan in combination with Spirulina extract was very effective in order to extend the shelf life of shrimp during storage in refrigerated condition. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=food%20packaging" title="food packaging">food packaging</a>, <a href="https://publications.waset.org/abstracts/search?q=chitosan" title=" chitosan"> chitosan</a>, <a href="https://publications.waset.org/abstracts/search?q=spirulina%20extract" title=" spirulina extract"> spirulina extract</a>, <a href="https://publications.waset.org/abstracts/search?q=white%20shrimp" title=" white shrimp"> white shrimp</a>, <a href="https://publications.waset.org/abstracts/search?q=shelf%20life" title=" shelf life"> shelf life</a> </p> <a href="https://publications.waset.org/abstracts/108039/application-of-active-chitosan-coating-incorporated-with-spirulina-extract-as-a-potential-food-packaging-material-for-enhancing-quality-and-shelf-life-of-shrimp" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/108039.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">210</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">13</span> Erosion Influencing Factors Analysis: Case of Isser Watershed (North-West Algeria)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chahrazed%20Salhi">Chahrazed Salhi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayoub%20Zeroual"> Ayoub Zeroual</a>, <a href="https://publications.waset.org/abstracts/search?q=Yasmina%20Hamitouche"> Yasmina Hamitouche</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Soil water erosion poses a significant threat to the watersheds in Algeria today. The degradation of storage capacity in large dams over the past two decades, primarily due to erosion, necessitates a comprehensive understanding of the factors that contribute to soil erosion. The Isser watershed, located in the Northwestern region of Algeria, faces additional challenges such as recurrent droughts and the presence of delicate marl and clay outcrops, which amplify its susceptibility to water erosion. This study aims to employ advanced techniques such as Geographic Information Systems (GIS) and Remote Sensing (RS), in conjunction with the Canonical Correlation Analysis (CCA) method and Soil Water Assessment Tool (SWAT) model, to predict specific erosion patterns and analyze the key factors influencing erosion in the Isser basin. To accomplish this, an array of data sources including rainfall, climatic, hydrometric, land use, soil, digital elevation, and satellite data were utilized. The application of the SWAT model to the Isser basin yielded an average annual soil loss of approximately 16 t/ha/year. Particularly high erosion rates, exceeding 12 T/ha/year, were observed in the central and southern parts of the basin, encompassing 41% of the total basin area. Through Canonical Correlation Analysis, it was determined that vegetation cover and topography exerted the most substantial influence on erosion. Consequently, the study identified significant and spatially heterogeneous erosion throughout the study area. The impact of land topography on soil loss was found to be directly proportional, while vegetation cover exhibited an inverse proportional relationship. Modeling specific erosion for the Ladrat dam sub-basin estimated a rate of around 39 T/ha/year, thus accounting for the recorded capacity loss of 17.80% compared to the bathymetric survey conducted in 2019. The findings of this research provide valuable decision-support tools for soil conservation managers, empowering them to make informed decisions regarding soil conservation measures. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Isser%20watershed" title="Isser watershed">Isser watershed</a>, <a href="https://publications.waset.org/abstracts/search?q=RS" title=" RS"> RS</a>, <a href="https://publications.waset.org/abstracts/search?q=CCA" title=" CCA"> CCA</a>, <a href="https://publications.waset.org/abstracts/search?q=SWAT" title=" SWAT"> SWAT</a>, <a href="https://publications.waset.org/abstracts/search?q=vegetation%20cover" title=" vegetation cover"> vegetation cover</a>, <a href="https://publications.waset.org/abstracts/search?q=topography" title=" topography"> topography</a> </p> <a href="https://publications.waset.org/abstracts/173177/erosion-influencing-factors-analysis-case-of-isser-watershed-north-west-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/173177.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">71</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">12</span> Effect of Geometry on the Aerodynamic Performance of Darrieus H Yype Vertical Axis Wind Turbine</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Belkheir%20Noura">Belkheir Noura</a>, <a href="https://publications.waset.org/abstracts/search?q=Rabah%20Kerfah"> Rabah Kerfah</a>, <a href="https://publications.waset.org/abstracts/search?q=Boumehani%20Abdellah"> Boumehani Abdellah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The influence of solidity variations on the aerodynamic performance of H type vertical axis wind turbine is studied in this paper. The wind turbine model used in this paper is the three-blade wind turbine with the symmetrical airfoil, NACA0021. The length of the chord is 0.265m. Numerical investigations were implemented for the different solidity by changing the radius and blade number. A two-dimensional model of the wind turbine is employed. The approach a Reynolds-Averaged Navier–Stokes equations, completed by the K- ώ SST turbulence model, is used. Motion mesh model capability of a computational fluid dynamics (CFD) solver is used. For each value of the solidity, the aerodynamics performances and the characteristics of the flow field are studied at several values of the tip speed ratio, λ = 0.5 to λ = 3, with an incoming wind speed of 8 m/s. The results show that increasing the number of blades will reduce the maximum value of the power coefficient of the wind turbine. Also, for the VAWT with a lower solidity can obtain the maximum Cp at a high tip speed ratio. The effects of changing the radius and blade number on aerodynamic performance are almost the same. Finally, for the validation, experimental data from the literature and computational results were compared. In conclusion, to study the influence of the solidity in the performances of the wind turbine is to provide the reference for the design of H type vertical axis wind turbines. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wind%20energy" title="wind energy">wind energy</a>, <a href="https://publications.waset.org/abstracts/search?q=darrieus%20h%20type%20vertical%20axis%20wind%20turbine" title=" darrieus h type vertical axis wind turbine"> darrieus h type vertical axis wind turbine</a>, <a href="https://publications.waset.org/abstracts/search?q=computational%20fluid%20dynamic" title=" computational fluid dynamic"> computational fluid dynamic</a>, <a href="https://publications.waset.org/abstracts/search?q=solidity" title=" solidity"> solidity</a> </p> <a href="https://publications.waset.org/abstracts/164160/effect-of-geometry-on-the-aerodynamic-performance-of-darrieus-h-yype-vertical-axis-wind-turbine" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164160.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">93</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11</span> Rhizobia-Containing Rhizobacterial Consortia and Intercropping Improved Faba Bean and Wheat Performances Under Stress Combining Drought and Phosphorus Deficiency</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Said%20Cheto">Said Cheto</a>, <a href="https://publications.waset.org/abstracts/search?q=Khawla%20Oukaltouma"> Khawla Oukaltouma</a>, <a href="https://publications.waset.org/abstracts/search?q=Imane%20Chamkhi"> Imane Chamkhi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ammar%20Ibn%20Yasser"> Ammar Ibn Yasser</a>, <a href="https://publications.waset.org/abstracts/search?q=Bouchra%20Benmrid"> Bouchra Benmrid</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Qaddoury"> Ahmed Qaddoury</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamfeddal%20Kouisni"> Lamfeddal Kouisni</a>, <a href="https://publications.waset.org/abstracts/search?q=Joerg%20Geistlinger"> Joerg Geistlinger</a>, <a href="https://publications.waset.org/abstracts/search?q=Youssef%20Zeroual"> Youssef Zeroual</a>, <a href="https://publications.waset.org/abstracts/search?q=Adnane%20Bargaz"> Adnane Bargaz</a>, <a href="https://publications.waset.org/abstracts/search?q=Cherki%20Ghoulam"> Cherki Ghoulam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Our study aimed to assess, the role of inoculation of faba bean/wheat intercrops with selected rhizobacteria consortia gathering one rhizobia and two phosphate solubilizing bacteria “PSB” to alleviate the effects of combined water deficit and P limitation on Faba bean/ wheat intercrops versus monocrops under greenhouse conditions. One Vicia faba L variety (Aguadulce “Ag”), and one Triticum durum L. variety (Karim “K”) were grown as sole crops or intercrop in pots containing sterilized substrate (sand: peat 4:1v/v) added either with rock phosphate (RP) as the alone P source (P limitation) or with KH₂PO₄ in nutrient solution (P sufficient control). Plant inoculation was done using rhizobacterial consortia composed; C1(Rhizobium laguerreae, Kocuria sp, and Pseudomonas sp) and C2 (R. laguerreae, Rahnella sp, and Kocuria sp). Two weeks after inoculation, the plants were submitted to water deficit consisting of 40% of substrate water holding Capacity (WHC) versus 80% WHC for well-watered plants. At the flowering stage, the trial was assessed, and the results showed that inoculation with both consortia (C1 and C2) improved faba bean biomass in terms of shoots, roots, and nodules compared to inoculation with rhizobia alone, particularly C2 improved these parametres by 19.03, 78.99, and 72.73%, respectively. Leaf relative water content decreased under combined stress, particularly in response to C1 with a significant improvement of this parameter in wheat intercrops. For faba bean under P limitation, inoculation with C2 increased stomatal conductance (gs) by 35.73% compared to plants inoculated with rhizobia alone. Furthermore, the same inoculum C2 improved membrane stability by 44,33% versus 16,16% for C1 compared to inoculation with rhizobia alone under P deficit. For sole cropped faba bean plants, inoculation with both consortia improved N accumulation compared to inoculation with rhizobia alone with an increase of 70.75% under P limitation. Moreover, under the combined stress, intercropping inoculation with C2 improved plant biomass and N content (112.98%) in wheat plants, compared to the sole crop. Our finding revealed that consortium C2 might offer an agronomic advantage under water and P deficit and could be used as inoculum for enhancing faba bean and wheat production under both monocropping and intercropping systems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=drought" title="drought">drought</a>, <a href="https://publications.waset.org/abstracts/search?q=phosphorus" title=" phosphorus"> phosphorus</a>, <a href="https://publications.waset.org/abstracts/search?q=intercropping" title=" intercropping"> intercropping</a>, <a href="https://publications.waset.org/abstracts/search?q=PSB" title=" PSB"> PSB</a>, <a href="https://publications.waset.org/abstracts/search?q=rhizobia" title=" rhizobia"> rhizobia</a>, <a href="https://publications.waset.org/abstracts/search?q=vicia%20faba" title=" vicia faba"> vicia faba</a>, <a href="https://publications.waset.org/abstracts/search?q=Triticum%20durum" title=" Triticum durum"> Triticum durum</a> </p> <a href="https://publications.waset.org/abstracts/163616/rhizobia-containing-rhizobacterial-consortia-and-intercropping-improved-faba-bean-and-wheat-performances-under-stress-combining-drought-and-phosphorus-deficiency" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163616.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">73</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Zeroual%20Abdellah&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Zeroual%20Abdellah&page=2" 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