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Benachour</title> <meta name="description" content="Search results for: Naima Benachour"> <meta name="keywords" content="Naima Benachour"> <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="Naima Benachour"> <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> 44</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Naima Benachour</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">44</span> Electrodeposition of Nickel-Zinc Alloy on Stainless Steel in a Magnetic Field in a Chloride Environment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Naima%20Benachour">Naima Benachour</a>, <a href="https://publications.waset.org/abstracts/search?q=Sabiha%20Chouchane"> Sabiha Chouchane</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Paul%20Chopart"> J. Paul Chopart</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The objective of this work is to determine the appropriate conditions for a Ni-Zn deposit with good nickel content. The electrodeposition of zinc-nickel on a stainless steel is carried out in a chlorinated bath NiCl2.6H2O, ZnCl2, and H3BO3), whose composition is 1.1 M; 1.8 M; 0.1 M respectively. Studies show the effect of the concentration of NH4Cl, which reveals a significant effect on the reduction and ion transport in the electrolyte. In order to highlight the influence of magnetic field on the chemical composition and morphology of the deposit, chronopotentiometry tests were conducted, the curves obtained inform us that the application of a magnetic field promotes stability of the deposit. Characterization developed deposits was performed by scanning electron microscopy coupled with EDX and specified by the X-ray diffraction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zn-Ni%20alloys" title="Zn-Ni alloys">Zn-Ni alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=electroplating" title=" electroplating"> electroplating</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20field" title=" magnetic field"> magnetic field</a>, <a href="https://publications.waset.org/abstracts/search?q=chronopotentiometry" title=" chronopotentiometry"> chronopotentiometry</a> </p> <a href="https://publications.waset.org/abstracts/21468/electrodeposition-of-nickel-zinc-alloy-on-stainless-steel-in-a-magnetic-field-in-a-chloride-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21468.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">441</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">43</span> Fatigue Crack Initiation of Al-Alloys: Effect of Heat Treatment Condition</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Benachour">M. Benachour</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Benachour"> N. Benachour</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Benguediab"> M. Benguediab</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this investigation an empirical study was made on fatigue crack initiation on 7075 T6 and 7075 T71 al-alloys under constant amplitude loading. At initiation stage, local strain approach at the notch was applied. Single Edge Notch Tensile specimen with semi circular notch is used. Based on experimental results, effect of mean stress, is highlights on fatigue initiation life. Results show that fatigue life initiation is affected by notch geometry and mean stress. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fatigue%20crack%20initiation" title="fatigue crack initiation">fatigue crack initiation</a>, <a href="https://publications.waset.org/abstracts/search?q=al-alloy" title=" al-alloy"> al-alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=mean%20stress" title=" mean stress"> mean stress</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20treatment%20state" title=" heat treatment state"> heat treatment state</a> </p> <a href="https://publications.waset.org/abstracts/1777/fatigue-crack-initiation-of-al-alloys-effect-of-heat-treatment-condition" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1777.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">233</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">42</span> Effect of Single Overload Ratio and Stress Ratio on Fatigue Crack Growth </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Benachour">M. Benachour</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Benachour"> N. Benachour</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Benguediab"> M. Benguediab</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this investigation, variation of cyclic loading effect on fatigue crack growth is studied. This study is performed on 2024 T351 and 7050-T74 aluminum alloys, used in aeronautical structures. The propagation model used in this study is NASGRO model. In constant amplitude loading (CA), the effect of stress ratio has been investigated. Fatigue life and fatigue crack growth rate were affected by this factor. Results showed an increasing in fatigue crack growth rates (FCGRs) with increasing stress ratio. Variable amplitude loading (VAL) can take many forms i.e with a single overload, overload band etc. The shape of these loads affects strongly the fracture life and FCGRs. The application of a single overload (ORL) decrease the FCGR and increase the delay crack length caused by the formation of a larger plastic zone compared to the plastic zone due without VAL. The fatigue behavior of the both material under single overload has been compared. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fatigue%20crack%20growth" title="fatigue crack growth">fatigue crack growth</a>, <a href="https://publications.waset.org/abstracts/search?q=overload%20ratio" title=" overload ratio"> overload ratio</a>, <a href="https://publications.waset.org/abstracts/search?q=stress%20ratio" title=" stress ratio"> stress ratio</a>, <a href="https://publications.waset.org/abstracts/search?q=generalized%20willenborg%20model" title=" generalized willenborg model"> generalized willenborg model</a>, <a href="https://publications.waset.org/abstracts/search?q=retardation" title=" retardation"> retardation</a>, <a href="https://publications.waset.org/abstracts/search?q=al-alloys" title=" al-alloys"> al-alloys</a> </p> <a href="https://publications.waset.org/abstracts/3037/effect-of-single-overload-ratio-and-stress-ratio-on-fatigue-crack-growth" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3037.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">364</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">41</span> Study of the ZnO Effect on the Properties of HDPE/ ZnO Nanocomposites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Z.%20Benabid">F. Z. Benabid</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Zouai"> F. Zouai</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Kharchi"> N. Kharchi</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Benachour"> D. Benachour </a> </p> <p class="card-text"><strong>Abstract:</strong></p> A HDPE/ZnO nano composites have been successfully performed using the co-mixing. The ZnO was first co-mixed with the stearic acid then added to the polymer in the plastograph. The nano composites prepared with the co-mixed ZnO were compared to those prepared with the neat TiO2. The nano composites were characterized by different techniques as the wide-angle X-ray scattering (WAXS). The micro and nano structure/properties relationships were investigated. The present study allowed establishing good correlations between the different measured properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=exfoliation" title="exfoliation">exfoliation</a>, <a href="https://publications.waset.org/abstracts/search?q=ZnO" title=" ZnO"> ZnO</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20composites" title=" nano composites"> nano composites</a>, <a href="https://publications.waset.org/abstracts/search?q=HDPE" title=" HDPE"> HDPE</a>, <a href="https://publications.waset.org/abstracts/search?q=co-mixing" title=" co-mixing "> co-mixing </a> </p> <a href="https://publications.waset.org/abstracts/27220/study-of-the-zno-effect-on-the-properties-of-hdpe-zno-nanocomposites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27220.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">353</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">40</span> The Combined Effect of the Magnetic Field and Ammonium Chlorides on Deposits Zn-Ni Obtained in Different Conditions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.Benachour">N.Benachour</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Chouchane"> S. Chouchane</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20P.%20Chopart"> J. P. Chopart </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The zinc-nickel deposition on stainless steel substrate was obtained in a chloride bath composed of ZnCl2 (1.8M), NiCl2.6H2O (1.1M), boric acid H3BO3 (1M) and NH4Cl (4M). One configuration was studied the amplitude or field B (0.5 et1T) is parallel to the surface of the working electrodes .the other share the study of various layer was carried out by XRD. The study of the effect of ammonium chloride in combination with the magnetohydrodynamic effect gave several deposits supposedly good physical properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ammonium%20chloride" title="ammonium chloride">ammonium chloride</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20field" title=" magnetic field"> magnetic field</a>, <a href="https://publications.waset.org/abstracts/search?q=nickel-zinc%20alloys" title=" nickel-zinc alloys"> nickel-zinc alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=co-deposition" title=" co-deposition"> co-deposition</a> </p> <a href="https://publications.waset.org/abstracts/45247/the-combined-effect-of-the-magnetic-field-and-ammonium-chlorides-on-deposits-zn-ni-obtained-in-different-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45247.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">274</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> Study of the Adsorption of Metal Ions Ag+ Mg2+, Ni2+ by the Chemical and Electrochemical Polydibenzoether Crown</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dalila%20Chouder">Dalila Chouder</a>, <a href="https://publications.waset.org/abstracts/search?q=Djaafer%20Benachour"> Djaafer Benachour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work concerns the study of the adsorption of metal ions Ag +, Mg +, and Ni2+ in aqueous medium by polydibenzoether-ROWN based on three factors: Temperature, time and concentration. The polydibenzoether crown was synthesized by two means: Chemical and electrochemical. The behavior of the two polymers has been different, and turns out very interesting for chemical polydibenzoether crown has identified conditions. Chemical and électronique polydibenzoether crown have different extraction screw vi property of adsoption of ions fifférents, this study also shows that plyméres doped may have an advantageous electrical conductivity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=polymerization" title="polymerization">polymerization</a>, <a href="https://publications.waset.org/abstracts/search?q=electrochemical" title=" electrochemical"> electrochemical</a>, <a href="https://publications.waset.org/abstracts/search?q=conductivity" title=" conductivity"> conductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=complexing%20metal%20ions" title=" complexing metal ions"> complexing metal ions</a> </p> <a href="https://publications.waset.org/abstracts/26255/study-of-the-adsorption-of-metal-ions-ag-mg2-ni2-by-the-chemical-and-electrochemical-polydibenzoether-crown" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26255.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">267</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> Evolutional Substitution Cipher on Chaotic Attractor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adda%20Ali-Pacha">Adda Ali-Pacha</a>, <a href="https://publications.waset.org/abstracts/search?q=Naima%20Hadj-Said"> Naima Hadj-Said</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays, the security of information is primarily founded on the calculation of algorithms that confidentiality depend on the number of bits necessary to define a cryptographic key. In this work, we introduce a new chaotic cryptosystem that we call evolutional substitution cipher on a chaotic attractor. In this research paper, we take the Henon attractor. The evolutional substitution cipher on Henon attractor is based on the principle of monoalphabetic cipher and it associates the plaintext at a succession of real numbers calculated from the attractor equations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cryptography" title="cryptography">cryptography</a>, <a href="https://publications.waset.org/abstracts/search?q=substitution%20cipher" title=" substitution cipher"> substitution cipher</a>, <a href="https://publications.waset.org/abstracts/search?q=chaos%20theory" title=" chaos theory"> chaos theory</a>, <a href="https://publications.waset.org/abstracts/search?q=Henon%20attractor" title=" Henon attractor"> Henon attractor</a>, <a href="https://publications.waset.org/abstracts/search?q=evolutional%20substitution%20cipher" title=" evolutional substitution cipher"> evolutional substitution cipher</a> </p> <a href="https://publications.waset.org/abstracts/4769/evolutional-substitution-cipher-on-chaotic-attractor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4769.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">432</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> The Politics of Hope in Climate Change Fiction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Naima%20Bilal">Naima Bilal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The contemporary Anthropocene novel, with all the atrocities, man-made and inflicted by Nature (and Supernature), differs from the Horror novel in one main characteristic, that being naively lingering to hope and the notion that all evils, days and people come to an end. The current article explores the psychological dimensions of this optimistic ending that Climate fiction novelists uphold and how does this 'hope' functions as a bait for the reader to act. The primary sources for the research are The Ministry for the Future by Kim Stanley Robinson, Parable of the Sower by Octivia Butller and Amtiv Ghosh’s Gun Island. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hope%20in%20contemporary%20anthroprocene%20literature" title="hope in contemporary anthroprocene literature">hope in contemporary anthroprocene literature</a>, <a href="https://publications.waset.org/abstracts/search?q=Pakistani%20science%20fiction%20novels" title=" Pakistani science fiction novels"> Pakistani science fiction novels</a>, <a href="https://publications.waset.org/abstracts/search?q=science%20fiction%20as%20a%20remedy%20to%20contemporary%20climate%20problems" title=" science fiction as a remedy to contemporary climate problems"> science fiction as a remedy to contemporary climate problems</a>, <a href="https://publications.waset.org/abstracts/search?q=science%20the%20new%20religion" title=" science the new religion"> science the new religion</a> </p> <a href="https://publications.waset.org/abstracts/187949/the-politics-of-hope-in-climate-change-fiction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/187949.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">36</span> Physical Parameters Influencing the Yield of Nigella Sativa Oil Extracted by Hydraulic Pressing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hadjadj%20Naima">Hadjadj Naima</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Mahdi"> K. Mahdi</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Belhachat"> D. Belhachat</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20S.%20Ait%20Chaouche"> F. S. Ait Chaouche</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Ferradji"> A. Ferradji</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Nigella Sativa oil yield extracted by hydraulic pressing is influenced by the pressure temperature and size particles. The optimization of oil extraction is investigated. The rate of extraction of the whole seeds is very weak, a crushing of seeds is necessary to facilitate the extraction. This rate augments with the rise of the temperature and the pressure, and decrease of size particles. The best output (66%) is obtained for a granulometry lower than 1mm, a temperature of 50°C and a pressure of 120 bars. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=oil" title="oil">oil</a>, <a href="https://publications.waset.org/abstracts/search?q=Nigella%20sativa" title=" Nigella sativa"> Nigella sativa</a>, <a href="https://publications.waset.org/abstracts/search?q=extraction" title=" extraction"> extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature"> temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=pressure" title=" pressure"> pressure</a> </p> <a href="https://publications.waset.org/abstracts/31548/physical-parameters-influencing-the-yield-of-nigella-sativa-oil-extracted-by-hydraulic-pressing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31548.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">482</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> Elaboration and Characterization of PP/TiO2 Composites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Z.%20Benabid">F. Z. Benabid</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Kridi"> S. Kridi</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Zouai"> F. Zouai</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Benachour"> D. Benachour </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of present work is to characterize the PP/TiO2 blends as composites, and study the effect of TiO2 on properties of different compositions and the evaluation of the effectiveness of the method used for filler treatment. Nanocomposite samples were synthesized by molten route in an internal mixer. The TiO2 nanoparticles were treated with stearic acid in order to obtain a good dispersion, and the demonstration of the effectiveness of the treatment on the morphology and roughness of the nanofiller was established by microstructural analysis by FTIR and AFM. The various developed nanocomposite compositions were characterized by different methods; i.e. FTIR, XRD, SEM and optical microscopy. Rheological, dielectric and mechanical studies were also performed. The results showed a remarkable increase in the impact strength results which increased about 39% compared to neat PP. The rheological study showed an increase in the fluidity in all developed composite compositions, involved by the good dispersion of TiO2 particles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composites" title="composites">composites</a>, <a href="https://publications.waset.org/abstracts/search?q=PP" title=" PP"> PP</a>, <a href="https://publications.waset.org/abstracts/search?q=TiO2" title=" TiO2"> TiO2</a>, <a href="https://publications.waset.org/abstracts/search?q=comixing" title=" comixing"> comixing</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20treatment" title=" mechanical treatment"> mechanical treatment</a> </p> <a href="https://publications.waset.org/abstracts/35088/elaboration-and-characterization-of-pptio2-composites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35088.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">271</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> Ethnobotanical Survey of Medicinal Plants from Bechar Region, South-West of Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Naima%20Fatehi">Naima Fatehi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper reports on 107 medicinal plants, traditionally used in the South-West of Algeria (Bechar region). The information has been documented by interviewing traditional herbalists, various elderly men and women following different ethnobotanical methods. Ethnobotanical data was arranged alphabetically by botanical name, followed by family name, vernacular name, and part used. The present paper represents significant ethnobotanical information on medical plants used extensively in Bechar region for treating various diseases and provides baseline data for future pharmacological and phytochemical studies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=medicinal%20plants" title="medicinal plants">medicinal plants</a>, <a href="https://publications.waset.org/abstracts/search?q=ethnobotanical%20survey" title=" ethnobotanical survey"> ethnobotanical survey</a>, <a href="https://publications.waset.org/abstracts/search?q=South-West%20Algeria" title=" South-West Algeria"> South-West Algeria</a>, <a href="https://publications.waset.org/abstracts/search?q=Bechar%20region" title=" Bechar region"> Bechar region</a> </p> <a href="https://publications.waset.org/abstracts/13245/ethnobotanical-survey-of-medicinal-plants-from-bechar-region-south-west-of-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13245.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">521</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> Power Consumption for Viscoplastic Fluid in a Rotating Vessel with an Anchor Impeller </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Draoui%20Belkacem">Draoui Belkacem</a>, <a href="https://publications.waset.org/abstracts/search?q=Rahmani%20Lakhdar"> Rahmani Lakhdar</a>, <a href="https://publications.waset.org/abstracts/search?q=Benachour%20Elhadj"> Benachour Elhadj</a>, <a href="https://publications.waset.org/abstracts/search?q=Seghier%20Oussama"> Seghier Oussama</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Rheology is known to have a strong impact on the flow behavior and the power consumption of mechanically agitated vessels. The laminar 2D agitation flow and power consumption of viscoplastic fluids with an anchor impeller in a stirring tank is studied by using computational fluid dynamics (CFD). In this work the objective of this paper is: to evaluate the power consumption for yield stress fluids in standard mixing system. The power consumption is calculated for the different types of anchor impeller configurations and an optimum configuration is proposed.The hydrodynamic fields of incompressible yield stress fluid with model of Bingham in a cylindrical vessel not chicaned equipped with anchor stirrer was undertaken by means of numerical simulation. The flow structures, and especially the effect of inertia, the plasticity and the yield stress, are discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rheology" title="rheology">rheology</a>, <a href="https://publications.waset.org/abstracts/search?q=2D" title=" 2D"> 2D</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical" title=" numerical"> numerical</a>, <a href="https://publications.waset.org/abstracts/search?q=anchor" title=" anchor"> anchor</a>, <a href="https://publications.waset.org/abstracts/search?q=rotating%20vissel" title=" rotating vissel"> rotating vissel</a>, <a href="https://publications.waset.org/abstracts/search?q=non-Newtonien%20fluid" title=" non-Newtonien fluid "> non-Newtonien fluid </a> </p> <a href="https://publications.waset.org/abstracts/20884/power-consumption-for-viscoplastic-fluid-in-a-rotating-vessel-with-an-anchor-impeller" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20884.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">523</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> Efficient Positioning of Data Aggregation Point for Wireless Sensor Network</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sifat%20Rahman%20Ahona">Sifat Rahman Ahona</a>, <a href="https://publications.waset.org/abstracts/search?q=Rifat%20Tasnim"> Rifat Tasnim</a>, <a href="https://publications.waset.org/abstracts/search?q=Naima%20Hassan"> Naima Hassan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Data aggregation is a helpful technique for reducing the data communication overhead in wireless sensor network. One of the important tasks of data aggregation is positioning of the aggregator points. There are a lot of works done on data aggregation. But, efficient positioning of the aggregators points is not focused so much. In this paper, authors are focusing on the positioning or the placement of the aggregation points in wireless sensor network. Authors proposed an algorithm to select the aggregators positions for a scenario where aggregator nodes are more powerful than sensor nodes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aggregation%20point" title="aggregation point">aggregation point</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20communication" title=" data communication"> data communication</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20aggregation" title=" data aggregation"> data aggregation</a>, <a href="https://publications.waset.org/abstracts/search?q=wireless%20sensor%20network" title=" wireless sensor network "> wireless sensor network </a> </p> <a href="https://publications.waset.org/abstracts/126967/efficient-positioning-of-data-aggregation-point-for-wireless-sensor-network" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/126967.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">161</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> Analysis the Nexus among Ethnic Polarization, Globalization and Export Diversification of Pakistan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Naima%20Mubeen">Naima Mubeen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Multi-ethnic societies play a crucial role in managing relevant policies and their implication. Pakistan is a classic case of multicultural identity, social evils and a wide-range of preferential ethnic policies. The major objectives of this study are to explore the relationship between ethnic diversity, globalization and export diversification of Pakistan. For empirical analysis of this underlying nexus by utilizing time series data from 1970 to 2016, this study used the autoregressive distributed lags (ARDL) technique. The empirical finding of this study reveals that ethnic diversity is an essential component for enhancing globalization and export diversification in the case of Pakistan. Regarding the promotion of globalization and export diversification at different forums of the country, this study suggested that government needs to take steps for the promotion of society towards more cohesiveness by fair justice-based system and awareness programs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ethnic%20diversity" title="ethnic diversity">ethnic diversity</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20exclusion" title=" social exclusion"> social exclusion</a>, <a href="https://publications.waset.org/abstracts/search?q=globalization" title=" globalization"> globalization</a>, <a href="https://publications.waset.org/abstracts/search?q=export%20diversification" title=" export diversification"> export diversification</a> </p> <a href="https://publications.waset.org/abstracts/164358/analysis-the-nexus-among-ethnic-polarization-globalization-and-export-diversification-of-pakistan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164358.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">116</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> Building on Local People Capacities as Key Resources in Making Livable Environments</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ouassim%20Chemrouk">Ouassim Chemrouk</a>, <a href="https://publications.waset.org/abstracts/search?q=Naima%20Chabbi-Chemrouk"> Naima Chabbi-Chemrouk</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Contemporary settlements and urban places are becoming increasingly complex involving technologically advanced building materials, and mechanical systems for controlling environmental quality such as thermal comfort, lighting, acoustics and other building performances. These systems, which rely exclusively on the utilization of nonrenewable energy are often expensive and environment pollutants. The proposed paper illustrates the important role of traditional knowledge and practice and what is sometimes called intangible cultural heritage assume in the design of the built environment. It shows that some traditional “ways of doing” that are transmitted at local scales from generation to generation could be built upon to become key resources for more livable urban places. Based on evidence from documentary sources and field surveys, it also shows how different attempts were made to translate some traditional practices and local know-how in the proposal of new urban schemes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=key%20resource" title="key resource">key resource</a>, <a href="https://publications.waset.org/abstracts/search?q=know-how" title=" know-how"> know-how</a>, <a href="https://publications.waset.org/abstracts/search?q=local%20people" title=" local people"> local people</a>, <a href="https://publications.waset.org/abstracts/search?q=capacity%20building" title=" capacity building"> capacity building</a>, <a href="https://publications.waset.org/abstracts/search?q=liveable%20built%20environments" title=" liveable built environments"> liveable built environments</a> </p> <a href="https://publications.waset.org/abstracts/42266/building-on-local-people-capacities-as-key-resources-in-making-livable-environments" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42266.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">211</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> Utilizing Grid Computing to Enhance Power Systems Performance</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rafid%20A.%20Al-Khannak">Rafid A. Al-Khannak</a>, <a href="https://publications.waset.org/abstracts/search?q=Fawzi%20M.%20Al-Naima"> Fawzi M. Al-Naima</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Power load is one of the most important controlling keys which decide power demands and illustrate power usage to shape power market. Hence, power load forecasting is the parameter which facilitates understanding and analyzing all these aspects. In this paper, power load forecasting is solved under MATLAB environment by constructing a neural network for the power load to find an accurate simulated solution with the minimum error. A developed algorithm to achieve load forecasting application with faster technique is the aim for this paper. The algorithm is used to enable MATLAB power application to be implemented by multi machines in the Grid computing system, and to accomplish it within much less time, cost and with high accuracy and quality. Grid Computing, the modern computational distributing technology, has been used to enhance the performance of power applications by utilizing idle and desired Grid contributor(s) by sharing computational power resources. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DeskGrid" title="DeskGrid">DeskGrid</a>, <a href="https://publications.waset.org/abstracts/search?q=Grid%20Server" title=" Grid Server"> Grid Server</a>, <a href="https://publications.waset.org/abstracts/search?q=idle%20contributor%28s%29" title=" idle contributor(s)"> idle contributor(s)</a>, <a href="https://publications.waset.org/abstracts/search?q=grid%20computing" title=" grid computing"> grid computing</a>, <a href="https://publications.waset.org/abstracts/search?q=load%20forecasting" title=" load forecasting"> load forecasting</a> </p> <a href="https://publications.waset.org/abstracts/7716/utilizing-grid-computing-to-enhance-power-systems-performance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7716.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">476</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> A Grid Synchronization Phase Locked Loop Method for Grid-Connected Inverters Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Naima%20Ikken">Naima Ikken</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelhadi%20Bouknadel"> Abdelhadi Bouknadel</a>, <a href="https://publications.waset.org/abstracts/search?q=Nour-eddine%20Tariba%20Ahmed%20Haddou"> Nour-eddine Tariba Ahmed Haddou</a>, <a href="https://publications.waset.org/abstracts/search?q=Hafsa%20El%20Omari"> Hafsa El Omari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The operation of grid-connected inverters necessity a single-phase phase locked loop (PLL) is proposed in this article to accurately and quickly estimate and detect the grid phase angle. This article presents the improvement of a method of phase-locked loop. The novelty is to generate a method (PLL) of synchronizing the grid with a Notch filter based on adaptive fuzzy logic for inverter systems connected to the grid. The performance of the proposed method was tested under normal and abnormal operating conditions (amplitude, frequency and phase shift variations). In addition, simulation results with ISPM software are developed to verify the effectiveness of the proposed method strategy. Finally, the experimental test will be used to extract the result and discuss the validity of the proposed algorithm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phase%20locked%20loop" title="phase locked loop">phase locked loop</a>, <a href="https://publications.waset.org/abstracts/search?q=PLL" title=" PLL"> PLL</a>, <a href="https://publications.waset.org/abstracts/search?q=notch%20filter" title=" notch filter"> notch filter</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy%20logic%20control" title=" fuzzy logic control"> fuzzy logic control</a>, <a href="https://publications.waset.org/abstracts/search?q=grid%20connected%20inverters" title=" grid connected inverters"> grid connected inverters</a> </p> <a href="https://publications.waset.org/abstracts/127186/a-grid-synchronization-phase-locked-loop-method-for-grid-connected-inverters-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/127186.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">150</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> Study of Poly(Ethylene Terephthalate)-Clay Nanocomposites Prepareted by Extrusion Reactive Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Zouai">F. Zouai</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Z.%20Benabid"> F. Z. Benabid</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Bouhelal"> S. Bouhelal</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Benachour"> D. Benachour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A method for the exfoliation of polyethylene terephtalate (PET) - clay nanocomposites has been reported in this study. Montmorillonite clay based polyethylene terephtalate nanocomposites were prepared by reactive melt-mixing. To achieve this, untreated clay was first functionalized with the crosslinking agent compound based mainly on peroxide/sulphur and TMTD as accelerator or activator for sulphur. Furthermore, the different blends composition of PET/clay were directly mixed in melt state in closed chamber of plastograph at given working conditions for short time and in one step process. To investigate the microstructure modification and thermal, mechanical and rheological properties the DSC, WAXS, microhardness, FTIR and tensile properties were performed. The resulting structure of the modified samples shows that total exfoliation appears at 4% w/w of clay to PET matrices. The crystallinity and tensile modulus were correlated by the H microhardness and the DSC shows no significant effect on the cristallinity degree. The mechanical properties were improved significantly. The viscosity decreases for 4% clay and the activation energy is the minimum. The WAXS measurement shows a partial exfoliation without any intercalation which is the most relevant point. The grafting of organic to inorganic nanolayers was observed by Si—O—C and Si—C bonds by FTIR. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=PET" title="PET">PET</a>, <a href="https://publications.waset.org/abstracts/search?q=montmorillonite" title=" montmorillonite"> montmorillonite</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposites" title=" nanocomposites"> nanocomposites</a>, <a href="https://publications.waset.org/abstracts/search?q=exfoliation" title=" exfoliation"> exfoliation</a>, <a href="https://publications.waset.org/abstracts/search?q=reactive%20melt-mixing" title=" reactive melt-mixing"> reactive melt-mixing</a> </p> <a href="https://publications.waset.org/abstracts/6668/study-of-polyethylene-terephthalate-clay-nanocomposites-prepareted-by-extrusion-reactive-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6668.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">259</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> Elaboration and Characterization of PVDF/TiO2 Nanocomposites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Z.%20Benabid">F. Z. Benabid</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Kridi"> S. Kridi</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Zouai"> F. Zouai</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Benachour"> D. Benachour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of present work is to characterize the PVDF/TiO2 blends as nanocomposites, and study the effect of TiO2 on properties of different compositions and the evaluation of the effectiveness of the method used for filler treatment. Nanocomposite samples were synthesized by molten route in an internal mixer. The TiO2 nanoparticles were treated with stearic acid in order to obtain a good dispersion, and the demonstration of the effectiveness of the treatment on the morphology and roughness of the nanofiller was established by microstructural analysis by FTIR and AFM. The various developed nanocomposite compositions were characterized by different methods; i.e. FTIR, XRD, SEM and optical microscopy. Rheological, dielectric and mechanical studies were also performed. The results showed a remarkable increase in the crystallinity of the PVDF/neat TiO2 nanocomposite containing 1 wt% loading of filler, due to the nucleation effect of TiO2 nanoparticles. A good dispersion was obtained in PVDF/treated TiO2 nanocomposites. The rheological study showed an increase in the fluidity in all developed nanocomposite compositions, involved by the orientation of TiO2 nanoparticles in the flow direction. The dielectric study revealed an increase in electrical conductivity in PVDF/neat TiO2 nanocomposites. However, in PVDF/ treated TiO2 nanocomposites, the electrical conductivity was decreased by the addition of 0.5 and 2 wt% loading of filler. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanocomposites" title="nanocomposites">nanocomposites</a>, <a href="https://publications.waset.org/abstracts/search?q=PVDF" title=" PVDF"> PVDF</a>, <a href="https://publications.waset.org/abstracts/search?q=TiO2" title=" TiO2"> TiO2</a>, <a href="https://publications.waset.org/abstracts/search?q=comixing" title=" comixing"> comixing</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20treatment" title=" mechanical treatment"> mechanical treatment</a> </p> <a href="https://publications.waset.org/abstracts/35087/elaboration-and-characterization-of-pvdftio2-nanocomposites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35087.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">318</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> The Plasma Additional Heating Systems by Electron Cyclotron Waves</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ghoutia%20Naima%20Sabri">Ghoutia Naima Sabri</a>, <a href="https://publications.waset.org/abstracts/search?q=Tayeb%20Benouaz"> Tayeb Benouaz </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The interaction between wave and electron cyclotron movement when the electron passes through a layer of resonance at a fixed frequency results an Electron Cyclotron (EC) absorption in Tokamak plasma and dependent magnetic field. This technique is the principle of additional heating (ECRH) and the generation of non-inductive current drive (ECCD) in modern fusion devices. In this paper we are interested by the problem of EC absorption which used a microscopic description of kinetic theory treatment versus the propagation which used the cold plasma description. The power absorbed depends on the optical depth which in turn depends on coefficient of absorption and the order of the excited harmonic for O-mode or X-mode. There is another possibility of heating by dissipation of Alfven waves, based on resonance of cold plasma waves, the shear Alfven wave (SW) and the compressional Alfven wave (FW). Once the (FW) power is coupled to (SW), it stays on the magnetic surface and dissipates there, which cause the heating of bulk plasmas. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electron%20cyclotron" title="electron cyclotron">electron cyclotron</a>, <a href="https://publications.waset.org/abstracts/search?q=heating" title=" heating"> heating</a>, <a href="https://publications.waset.org/abstracts/search?q=plasma" title=" plasma"> plasma</a>, <a href="https://publications.waset.org/abstracts/search?q=tokamak" title=" tokamak"> tokamak</a> </p> <a href="https://publications.waset.org/abstracts/30668/the-plasma-additional-heating-systems-by-electron-cyclotron-waves" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30668.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">516</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> Synthesis and Electrochemical Characterization of a Copolymer (PANI/PEDOT:PSS) for Application in Supercapacitors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Naima%20Boudieb">Naima Boudieb</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Loucif%20Seaid"> Mohamed Loucif Seaid</a>, <a href="https://publications.waset.org/abstracts/search?q=Imad%20Rati"> Imad Rati</a>, <a href="https://publications.waset.org/abstracts/search?q=Imane%20Benammane"> Imane Benammane</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this study is to synthesis of a copolymer PANI/PEDOT:PSS by electrochemical means to apply in supercapacitors. Polyaniline (PANI) is a conductive polymer; it was synthesized by electrochemical polymerization. It exhibits very stable properties in different environments, whereas PEDOT:PSS is a conductive polymer based on poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(styrene sulfonate)(PSS). It is commonly used with polyaniline to improve its electrical conductivity. Several physicochemical and electrochemical techniques were used for the characterization of PANI/PEDOT:PSS: cyclic voltammetry (VC), electrochemical impedance spectroscopy (EIS), open circuit potential, SEM, X-ray diffraction, etc. The results showed that the PANI/PEDOT:PSS composite is a promising material for supercapacitors due to its high electrical conductivity and high porosity. Electrochemical and physicochemical characterization tests have shown that the composite has high electrical and structural performances, making it a material of choice for high-performance energy storage applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=energy%20storage" title="energy storage">energy storage</a>, <a href="https://publications.waset.org/abstracts/search?q=supercapacitors" title=" supercapacitors"> supercapacitors</a>, <a href="https://publications.waset.org/abstracts/search?q=SIE" title=" SIE"> SIE</a>, <a href="https://publications.waset.org/abstracts/search?q=VC" title=" VC"> VC</a>, <a href="https://publications.waset.org/abstracts/search?q=PANI" title=" PANI"> PANI</a>, <a href="https://publications.waset.org/abstracts/search?q=poly%283" title=" poly(3"> poly(3</a>, <a href="https://publications.waset.org/abstracts/search?q=4-ethylenedioxythiophene" title="4-ethylenedioxythiophene">4-ethylenedioxythiophene</a>, <a href="https://publications.waset.org/abstracts/search?q=PEDOT" title=" PEDOT"> PEDOT</a>, <a href="https://publications.waset.org/abstracts/search?q=polystyrene%20sulfonate" title=" polystyrene sulfonate"> polystyrene sulfonate</a> </p> <a href="https://publications.waset.org/abstracts/182320/synthesis-and-electrochemical-characterization-of-a-copolymer-panipedotpss-for-application-in-supercapacitors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182320.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">63</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> Proportion and Factors Associated with Presumptive Tuberculosis among Suspected Pediatric Tuberculosis Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Naima%20Nur">Naima Nur</a>, <a href="https://publications.waset.org/abstracts/search?q=Safa%20Islam"> Safa Islam</a>, <a href="https://publications.waset.org/abstracts/search?q=Saeema%20Islam"> Saeema Islam</a>, <a href="https://publications.waset.org/abstracts/search?q=Md.%20Faridul%20Alam"> Md. Faridul Alam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: The worldwide increase in pediatric presumptive tuberculosis (TB) is the most life-threatening challenge in effectively controlling TB. The objective of this study was to determine the proportion of presumptive TB and the factors associated with it. Methods: A cross-sectional study was conducted between March and November 2013 at ICDDR-Bangladesh. Two hundred twelve pulmonary and extra-pulmonary specimens were collected from 84 suspected pediatric patients diagnosed with TB based on their clinical symptoms/radiological findings. Presumptive TB and confirmed TB were considered presumptive TB and non-presumptive TB and were isolated by smear-microscopy, culture, and GeneXpert. Logistic regression was used to analyze associations between outcome and predictor variables. Results: The proportion of presumptive TB was 85.7%, and 14.3% of non-presumptive TB. In presumptive TB, vaccine scars, family TB history, and school-going children were 16.6%, 33.3%, and 56.9%, respectively. In contrast, vaccine scars and family TB history were 8.3%, and school-going children were 58.3% in non-presumptive TB. Significant factors did not appear in the logistic regression analysis. Conclusion: Despite the high proportion of presumptive TB, there was no statistically significant between presumptive TB and non-presumptive TB. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=presumptive%20tuberculosis" title="presumptive tuberculosis">presumptive tuberculosis</a>, <a href="https://publications.waset.org/abstracts/search?q=confirmed%20tuberculosis" title=" confirmed tuberculosis"> confirmed tuberculosis</a>, <a href="https://publications.waset.org/abstracts/search?q=patient%27s%20characteristics" title=" patient's characteristics"> patient's characteristics</a>, <a href="https://publications.waset.org/abstracts/search?q=diagnosis" title=" diagnosis"> diagnosis</a> </p> <a href="https://publications.waset.org/abstracts/183139/proportion-and-factors-associated-with-presumptive-tuberculosis-among-suspected-pediatric-tuberculosis-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/183139.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">50</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> Use of Polymeric Materials in the Architectural Preservation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Z.%20Benabid">F. Z. Benabid</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Zouai"> F. Zouai</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Douibi"> A. Douibi</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Benachour"> D. Benachour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> These Fluorinated polymers and polyacrylics have known a wide use in the field of historical monuments. PVDF provides a great easiness to processing, a good UV resistance and good chemical inertia. Although the quality of physical characteristics of the PMMA and its low price with a respect to PVDF, its deterioration against UV radiations limits its use as protector agent for the stones. On the other hand, PVDF/PMMA blend is a compromise of a great development in the field of architectural restoration, since it is the best method in term of quality and price to make new polymeric materials having enhanced properties. Films of different compositions based on the two polymers within an adequate solvent (DMF) were obtained to perform an exposition to artificial ageing and to the salted fog, a spectroscopic analysis (FTIR and UV) and optical analysis (refractive index). Based on its great interest in the field of building, a variety of standard tests has been elaborated for the first time at the central laboratory of ENAP (Souk-Ahras) in order to evaluate our blend performance. The obtained results have allowed observing the behavior of the different compositions of the blend under various tests. The addition of PVDF to PMMA enhances the properties of this last to know the exhibition to the natural and artificial ageing and to the saline fog. On the other hand, PMMA enhances the optical properties of the blend. Finally, 70/30 composition of the blend is in concordance with results of previous works and it is the adequate proportion for an eventual application. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=blend" title="blend">blend</a>, <a href="https://publications.waset.org/abstracts/search?q=PVDF" title=" PVDF"> PVDF</a>, <a href="https://publications.waset.org/abstracts/search?q=PMMA" title=" PMMA"> PMMA</a>, <a href="https://publications.waset.org/abstracts/search?q=preservation" title=" preservation"> preservation</a>, <a href="https://publications.waset.org/abstracts/search?q=historic%20monuments" title=" historic monuments"> historic monuments</a> </p> <a href="https://publications.waset.org/abstracts/16252/use-of-polymeric-materials-in-the-architectural-preservation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16252.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">309</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> New Bioactive Compounds from Two Chrysanthemum Saharian Species (Asteraceae) Growing in Algeria </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zahia%20Kabouche">Zahia Kabouche</a>, <a href="https://publications.waset.org/abstracts/search?q=Ouissem%20Gherboudj"> Ouissem Gherboudj</a>, <a href="https://publications.waset.org/abstracts/search?q=Naima%20Boutaghane"> Naima Boutaghane</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Kabouche"> Ahmed Kabouche</a>, <a href="https://publications.waset.org/abstracts/search?q=Laurence%20Voutquenne-Nazabadioko"> Laurence Voutquenne-Nazabadioko </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Chrysanthemum herbs (Asteraceae) are extensively used as food additives and in folk medicine. Anti-cancer, anti-human immunodeficiency virus type 1 (HIV-1), anti-inflammatory, antinociceptive and antiproliferative activities as well as antioxidant effects have been reported for Chrysanthemum species. We report the isolation and identification of flavonoids and new and known terpenoids from the endemic species, C. macrocarpum and C. deserticolum “guertoufa”, used in Algerian Sahara as tea drinks and in “couscous” and soups “Chorba”. Structures of the isolated compounds were established by 1-D and 2-D homo and hetero-nuclear NMR (1H, 13C, COSY, HSQC, HMBC, and NOESY), mass spectrometry, UV and comparison with literature data. C. deserticolum extracts were tested by four methods to identify the antioxidant activity namely, ABTS•+, DPPH• scavenging, CUPRAC and ferrous-ions chelating activity methods. Anti-inflammatory, antinociceptive, antiproliferative and antioxidant activities of C. macrocarpum extracts and isolated compounds are also reported here. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chrysanthemum%20macrocarpum" title="Chrysanthemum macrocarpum">Chrysanthemum macrocarpum</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20deserticolum" title=" C. deserticolum"> C. deserticolum</a>, <a href="https://publications.waset.org/abstracts/search?q=flavonoids" title=" flavonoids"> flavonoids</a>, <a href="https://publications.waset.org/abstracts/search?q=terpenoids" title=" terpenoids"> terpenoids</a>, <a href="https://publications.waset.org/abstracts/search?q=antioxidant" title=" antioxidant"> antioxidant</a>, <a href="https://publications.waset.org/abstracts/search?q=anti-inflammatory" title=" anti-inflammatory"> anti-inflammatory</a>, <a href="https://publications.waset.org/abstracts/search?q=anti-proliferative" title=" anti-proliferative"> anti-proliferative</a> </p> <a href="https://publications.waset.org/abstracts/13484/new-bioactive-compounds-from-two-chrysanthemum-saharian-species-asteraceae-growing-in-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13484.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">337</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> Physicochemical, Heavy Metals Analysis of Some Multi-Floral Algerian Honeys</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Assia%20Amri">Assia Amri</a>, <a href="https://publications.waset.org/abstracts/search?q=Naima%20Layachi"> Naima Layachi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Ladjama"> Ali Ladjama</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The characterization of some Algerian honey was carried out on the basis of their physico-chemical properties: moisture,hydroxy methyl furfural, diastase activity, pH,free, total and lactonic acidity, electrical conductivity, minerals and proline content. Studied samples are found to be low in moisture and therefore safe from fermentation, low in HMF level and high in diastase activity. Additionally the diastase activity and the HMF content are widely recognized parameters indicating the freshness of honey. Phenolic compounds present in honey are classified into two groups - simple phenols and polyphenols. The simple phenols in honey are various phenol acids, but polyphenols are various flavonoids and flavonides. The aim of our work was to determine antioxidant properties of various Algerian honey samples–the total phenol content, total flavonoids content, as well as honey anti radical activity.The quality of honey samples differs on account of various factors such as season, packaging and processing conditions, floral source, geographical origin and storage period. It is important that precautions should be taken to ensure standardization and rationalization of beekeeping techniques, manufacturing procedures and storing processes to improve honey quality. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=honey" title="honey">honey</a>, <a href="https://publications.waset.org/abstracts/search?q=physico-chemical%20characterization" title=" physico-chemical characterization"> physico-chemical characterization</a>, <a href="https://publications.waset.org/abstracts/search?q=phenolic%20coumpound" title=" phenolic coumpound"> phenolic coumpound</a>, <a href="https://publications.waset.org/abstracts/search?q=HMF" title=" HMF"> HMF</a>, <a href="https://publications.waset.org/abstracts/search?q=diastase%20activity" title=" diastase activity"> diastase activity</a> </p> <a href="https://publications.waset.org/abstracts/10564/physicochemical-heavy-metals-analysis-of-some-multi-floral-algerian-honeys" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10564.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">423</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> Clay Effect on PET/Clay and PEN/Clay Nanocomposites Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Zouai">F. Zouai</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Z.%20Benabid"> F. Z. Benabid</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Bouhelal"> S. Bouhelal</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Benachour"> D. Benachour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Reinforced plastics or nanocomposites have attracted considerable attention in scientific and industrial fields because a very small amount of clay can significantly improve the properties of the polymer. The polymeric matrices used in this work are two saturated polyesters, i.e., polyethylene terephthalate (PET) and polyethylene naphthalate (PEN). The success of processing compatible blends, based on poly(ethylene terephthalate) (PET)/poly(ethylene naphthalene) (PEN)/clay nanocomposites in one step by reactive melt extrusion is described. Untreated clay was first purified and functionalized ‘in situ’ with a compound based on an organic peroxide/ sulfur mixture and (tetramethylthiuram disulfide) as the activator for sulfur. The PET and PEN materials were first separately mixed in the molten state with functionalized clay. The PET/4 wt% clay and PEN/7.5 wt% clay compositions showed total exfoliation. These compositions, denoted nPET and nPEN, respectively, were used to prepare new n(PET/PEN) nanoblends in the same mixing batch. The n(PET/PEN) nanoblends were compared to neat PET/PEN blends. The blends and nanocomposites were characterized using various techniques. Microstructural and nanostructural properties were investigated. Fourier transform infrared spectroscopy (FTIR) results showed that the exfoliation of tetrahedral clay nanolayers is complete, and the octahedral structure totally disappears. It was shown that total exfoliation, confirmed by wide-angle X-ray scattering (WAXS) measurements, contributes to the enhancement of impact strength and tensile modulus. In addition, WAXS results indicated that all samples are amorphous. The differential scanning calorimetry (DSC) study indicated the occurrence of one glass transition temperature Tg, one crystallization temperature Tc and one melting temperature Tm for every composition. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=exfoliation" title="exfoliation">exfoliation</a>, <a href="https://publications.waset.org/abstracts/search?q=DRX" title=" DRX"> DRX</a>, <a href="https://publications.waset.org/abstracts/search?q=DSC" title=" DSC"> DSC</a>, <a href="https://publications.waset.org/abstracts/search?q=montmorillonite" title=" montmorillonite"> montmorillonite</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposites" title=" nanocomposites"> nanocomposites</a>, <a href="https://publications.waset.org/abstracts/search?q=PEN" title=" PEN"> PEN</a>, <a href="https://publications.waset.org/abstracts/search?q=PET" title=" PET"> PET</a>, <a href="https://publications.waset.org/abstracts/search?q=plastograph" title=" plastograph"> plastograph</a>, <a href="https://publications.waset.org/abstracts/search?q=reactive%20melt-mixing" title=" reactive melt-mixing"> reactive melt-mixing</a> </p> <a href="https://publications.waset.org/abstracts/49203/clay-effect-on-petclay-and-penclay-nanocomposites-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49203.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">326</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> Effect of Humic Substance on Ex-Vitro Propagation of Saffron (Crocus Sativus L.)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Tahiri">Abdelghani Tahiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Youssef%20Karra"> Youssef Karra</a>, <a href="https://publications.waset.org/abstracts/search?q=Naima%20Ait%20Aabd"> Naima Ait Aabd</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelaziz%20Mimouni"> Abdelaziz Mimouni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Saffron (Crocus sativus L.), the most expensive spice in the world derived from the stigmas, is an autumn-flowering and sterile triploid (2n=3x=24) geophyte species that belong to the Iridaceae family. This plant species is mainly propagated vegetatively through the formation of daughter corms from the mother one. Low multiplication rates of daughter corms under natural conditions, along with fungal contamination, significantly reduce the productivity and quality of saffron corms. The development of efficient and sustainable strategies for rapid and large-scale production of selected cultivars of saffron will be desired. For this, the main objective of this work is to improve the vegetative propagation of saffron under ex-vitro conditions. Preliminary results of the influence of increasing doses of humic substances (HS) on the growth and multiplication of corms under greenhouse conditions are evaluated. The obtained data shows that the effect of HS depends on the concentration used and the mode of application. Indeed, the application through irrigation has increased the number of shoots and corms, but it has reduced other parameters. On the other hand, the temporary treatment has improved all observed parameters except for the number of shoots and corms. Results obtained in this work suggest that it is possible to improve the propagation of saffron corms under greenhouse conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=saffron" title="saffron">saffron</a>, <a href="https://publications.waset.org/abstracts/search?q=Crocus%20sativus%20L." title=" Crocus sativus L."> Crocus sativus L.</a>, <a href="https://publications.waset.org/abstracts/search?q=corm" title=" corm"> corm</a>, <a href="https://publications.waset.org/abstracts/search?q=humic%20substances" title=" humic substances"> humic substances</a> </p> <a href="https://publications.waset.org/abstracts/132968/effect-of-humic-substance-on-ex-vitro-propagation-of-saffron-crocus-sativus-l" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/132968.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">213</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> Biodegradation Study of a Biocomposite Material Based on Sunflower Oil and Alfa Fibers as Natural Resources</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sihem%20Kadem">Sihem Kadem</a>, <a href="https://publications.waset.org/abstracts/search?q=Ratiba%20Irinislimane"> Ratiba Irinislimane</a>, <a href="https://publications.waset.org/abstracts/search?q=Naima%20Belhaneche"> Naima Belhaneche</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The natural resistance to biodegradation of polymeric materials prepared from petroleum-based source and the management of their wastes in the environment are the driving forces to replace them by other biodegradable materials from renewable resources. For that, in this work new biocomposites materials have been synthesis from sunflower oil (Helianthus annuus) and alfa plants (Stipatenacissima) as natural based resources. The sunflower oil (SFO) was chemically modified via epoxidation then acrylation reactions to obtain acrylated epoxidized sunflower oil resin (AESFO). The AESFO resin was then copolymerized with styrene as co-monomer in the presence of boron trifluoride (BF3) as cationic initiator and cobalt octoate (Co) as catalyst. The alfa fibers were treated with alkali treatment (5% NaOH) before been used as bio-reinforcement. Biocomposites were prepared by mixing the resin with untreated and treated alfa fibers at different percentages. A biodegradation study was carried out for the synthesized biocomposites in a solid medium (burial in the soil) by evaluated, first, the loss of mass, the results obtained were reached between 7.8% and 11% during one year. Then an observation under an optical microscope was carried out, after one year of burial in the soil, microcracks, brown and black spots were appeared on the samples surface. This results shows that the synthesized biocomposites have a great aptitude for biodegradation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alfa%20fiber" title="alfa fiber">alfa fiber</a>, <a href="https://publications.waset.org/abstracts/search?q=biocomposite" title=" biocomposite"> biocomposite</a>, <a href="https://publications.waset.org/abstracts/search?q=biodegradation" title=" biodegradation"> biodegradation</a>, <a href="https://publications.waset.org/abstracts/search?q=soil" title=" soil"> soil</a>, <a href="https://publications.waset.org/abstracts/search?q=sunflower%20oil" title=" sunflower oil"> sunflower oil</a> </p> <a href="https://publications.waset.org/abstracts/126344/biodegradation-study-of-a-biocomposite-material-based-on-sunflower-oil-and-alfa-fibers-as-natural-resources" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/126344.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">163</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> Isolation, Identification and Antimicrobial Susceptibility of Mycobacterium tuberculosis among Pulmonary Tuberculosis Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Naima%20Nur">Naima Nur</a>, <a href="https://publications.waset.org/abstracts/search?q=Safa%20Islam"> Safa Islam</a>, <a href="https://publications.waset.org/abstracts/search?q=Saeema%20Islam"> Saeema Islam</a>, <a href="https://publications.waset.org/abstracts/search?q=Faridul%20Alam"> Faridul Alam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Drug-resistant pulmonary tuberculosis (DR-PTB), particularly multidrug-resistant tuberculosis (MDR-TB) and pre-extensive drug-resistant (pre-XDR), is a major challenge in effectively controlling TB, especially in developing. This study aimed to identify the strains of M. tuberculosis complex (MTC) and drug resistance patterns among the pulmonary tuberculosis patients. Methods: The study used a cross-sectional design, and 815 patients were recruited randomly in three study periods. In the first-period, 210 treated PTB patients, who were completed their treatment, received their diagnoses using light microscopy, fluorescence microscopy and cultured on Lowenstein-Jensen (L-J) slant, and then strains were identified as MTC by biochemical tests, and then sensitivity test in National Institute of Diseases of the Chest and Hospital. In the second-period, 220 re-treated PTB patients, who were completed their treatment, received their diagnoses using culture on L-J slant, line probe assay (LPA), and GeneXpert in the same hospital. In the last-period, during treatment, 385 MDR-PTB patients received their diagnoses using culture on L-J slant and LPA in the same hospital. Results: Among sixty-two (29.5%) PTB patients, 13% were sensitive to all first-line anti-TB drugs, 26% were MDR-TB patients, and 14.2% were pre-XDR-TB among 14 MDR-TB patients. After three years, 31% were MDR-TB among 220 re-treated PTB patients. After five years, 16.4% was pre-XDR-TB among 385 MDR-TB patients. Compared to females, male patients were significantly higher at all times. Conclusion: The current study demonstrated that in three study periods, the proportions of DR-TB, MDR-TB, and pre-XDR patients were an alarming issue and increasing daily. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=multi-drug%20resistant" title="multi-drug resistant">multi-drug resistant</a>, <a href="https://publications.waset.org/abstracts/search?q=drug-resistant" title=" drug-resistant"> drug-resistant</a>, <a href="https://publications.waset.org/abstracts/search?q=pre-extensive%20drug%20resistant" title=" pre-extensive drug resistant"> pre-extensive drug resistant</a>, <a href="https://publications.waset.org/abstracts/search?q=pulmonary%20tuberculosis" title=" pulmonary tuberculosis"> pulmonary tuberculosis</a> </p> <a href="https://publications.waset.org/abstracts/182183/isolation-identification-and-antimicrobial-susceptibility-of-mycobacterium-tuberculosis-among-pulmonary-tuberculosis-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182183.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">56</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> Study of Nanoclay Blends Based on PET/PEN Prepared by Reactive Extrusion</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Zouai">F. Zouai</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Z.%20Benabid"> F. Z. Benabid</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Bouhelal"> S. Bouhelal</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Benachour"> D. Benachour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A new route of preparation of compatible blends, based on poly(ethylene terephthalate)(PET)/poly(ethylenenaphthalene2,6-dicarboxylate) (PEN)/clay nanocomposites has been successfully performed in one step by reactive melt extrusion. To achieve this, untreated clay was first purified and functionalized “in situ” with a compound based on an organic peroxide/sulfur mixture and (tetra methyl thiuram disulfide) TMTD as accelerator or activator for sulfur. The PET and PEN materials were first mixed separately in the melt state with different amounts of functionalized clay. It was observed that the compositions PET/4 wt% clay and PEN/7.5 wt% clay showed total exfoliation. These completely exfoliated compositions, called nPET and nPEN, respectively, were used to prepare new nPET/nPEN nanoblends in the same mixing batch. The nPET/nPEN nanoblends were compared to neat blends of PET/PEN. The blends and the nanocomposites were characterized by different techniques: differential scanning calorimetry (DSC) and wide-angle X-ray scattering (WAXS). The micro and nanostructure/properties relationships were investigated. The results of the WAXS measurements study showed that the exfoliation of tetrahedral nanolayers of clay was complete and the octahedral structure disappeared totally. From the different WAXS patterns, it is seen that all samples are amorphous phase. The thermal study showed that there are only one glass transition temperature Tg, one crystallization temperature Tc and one melting temperature Tm for every composition. This indicated that both PET/PEN blends and nPET/nPEN blends were compatible in the entire range of compositions. In addition, nPET/nPEN blends present lower Tc values and higher Tm values than the corresponding neat PET/PEN blends. The obtained results indicate that nPET/nPEN blends are somewhat different from the pure ones in nanostructure and behavior, thus showing the additional effect of nanolayers. The present study allowed establishing good correlations between the different measured properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=PET" title="PET">PET</a>, <a href="https://publications.waset.org/abstracts/search?q=PEN" title=" PEN"> PEN</a>, <a href="https://publications.waset.org/abstracts/search?q=montmorillonite" title=" montmorillonite"> montmorillonite</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposites" title=" nanocomposites"> nanocomposites</a>, <a href="https://publications.waset.org/abstracts/search?q=exfoliation" title=" exfoliation"> exfoliation</a>, <a href="https://publications.waset.org/abstracts/search?q=reactive%20melt-mixing" title=" reactive melt-mixing "> reactive melt-mixing </a> </p> <a href="https://publications.waset.org/abstracts/11861/study-of-nanoclay-blends-based-on-petpen-prepared-by-reactive-extrusion" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11861.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">299</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=Naima%20Benachour&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Naima%20Benachour&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a 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