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Imine</title> <meta name="description" content="Search results for: Bachir Imine"> <meta name="keywords" content="Bachir Imine"> <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 navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="Bachir Imine" name="q" aria-label="Search"> <button class="btn btn-light my-2 my-sm-0" type="submit"><i class="fas fa-search"></i></button> </form> </div> <div class="collapse navbar-collapse mt-1" id="navbarMenu"> <ul class="navbar-nav ml-auto align-items-center" id="mainNavMenu"> <li class="nav-item"> <a class="nav-link" href="https://waset.org/conferences" title="Conferences in 2024/2025/2026">Conferences</a> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/disciplines" title="Disciplines">Disciplines</a> </li> <li 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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="Bachir Imine"> <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> 63</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Bachir Imine</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">63</span> Optimization of the Aerodynamic Performances of an Unmanned Aerial Vehicle</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fares%20Senouci">Fares Senouci</a>, <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Imine"> Bachir Imine</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This document provides numerical and experimental optimization of the aerodynamic performance of a drone equipped with three types of horizontal stabilizer. To build this optimal configuration, an experimental and numerical study was conducted on three parameters: the geometry of the stabilizer (horizontal form or reverse V form), the position of the horizontal stabilizer (up or down), and the landing gear position (closed or open). The results show that up-stabilizer position with respect to the horizontal plane of the fuselage provides better aerodynamic performance, and that the landing gear increases the lift in the zone of stability, that is to say where the flow is not separated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aerodynamics" title="aerodynamics">aerodynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=drag" title=" drag"> drag</a>, <a href="https://publications.waset.org/abstracts/search?q=lift" title=" lift"> lift</a>, <a href="https://publications.waset.org/abstracts/search?q=turbulence%20model" title=" turbulence model"> turbulence model</a>, <a href="https://publications.waset.org/abstracts/search?q=wind%20tunnel" title=" wind tunnel"> wind tunnel</a> </p> <a href="https://publications.waset.org/abstracts/68885/optimization-of-the-aerodynamic-performances-of-an-unmanned-aerial-vehicle" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68885.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">252</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">62</span> Keto-Enol Tautomerism of Salicylideneaniline Substituted</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rihana%20Hadjeb">Rihana Hadjeb</a>, <a href="https://publications.waset.org/abstracts/search?q=Djamel%20Barkat"> Djamel Barkat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Schiff bases derived from o-hydroxybenzaldehyde has attracted a great interest not only for its promising applications towards linear and non-linear optical properties, biological activity and technological applications but also used as model compounds for the theory of hydrogen bonding. Due to its intramolecular hydrogen bonding, depending on the position of proton in the hydrogen bond o-hydroxy salicylidene Schiff bases exhibit two tautomeric forms, enol-imine (E-form) and keto-enamine (K-form) both in solution and in crystalline state. A zwitterionic structure also appears due to a proton transfer in enol – imine and keto – amine tautomer. These classes of compounds also exhibit thermochromic and photochromic behavior. We undertook in this study the synthesis of ten compounds of hydroxy Schiff bases from the condensation of salicylic aldehyde and aniline substituted in the ortho, meta and para by the methyl, chloro and nitro groups. To study the keto-enol equilibrium of the compounds; UV-VIS spectra were studied in different polarity solvents. The compounds were in tautomeric equilibrium (enol imine O–H•••N, keto-amine O•••H–N forms). For some derivatives of salicylideneanilines the keto-amine form was observed in both ethanol and dioxane. IR results showed that all Schiff bases studied favor the enol-imine form over the keto form. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=salicylideneaniline" title="salicylideneaniline">salicylideneaniline</a>, <a href="https://publications.waset.org/abstracts/search?q=tautomerism" title=" tautomerism"> tautomerism</a>, <a href="https://publications.waset.org/abstracts/search?q=keto-enol%20equilibrium" title=" keto-enol equilibrium"> keto-enol equilibrium</a>, <a href="https://publications.waset.org/abstracts/search?q=UV-VIS%20spectroscopy" title=" UV-VIS spectroscopy"> UV-VIS spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=solvent%20effect" title=" solvent effect"> solvent effect</a> </p> <a href="https://publications.waset.org/abstracts/15613/keto-enol-tautomerism-of-salicylideneaniline-substituted" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15613.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">393</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">61</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">60</span> Exploring the Bifunctional Organocatalysts for Asymmetric Synthesis of 3-Substituted-3-Aminooxindoles </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jasneet%20Kaur">Jasneet Kaur</a>, <a href="https://publications.waset.org/abstracts/search?q=Swapandeep%20Singh%20Chimni"> Swapandeep Singh Chimni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The unfavorable use of metal-based catalysts that are often extortionate and toxic can be overcome by using small organic molecules known as organocatalysts. A variety of small organic molecules, including Brønsted/Lewis bases and acids, based on sulfonic acids, phosphoric acids, amines, phosphines or carbenes, Cinchona alkaloids, have been used as organocatalysts. One of the key reasons for using organocatalysis is their ability to be effectively removed from the final product in comparison to the metallic counterparts, which are exceedingly difficult to remove. The present investigation seeks to explore the catalytic nature of Cinchona alkaloids as an organocatalyst for enantioselective synthesis of 3-substituted-3-aminooxindole, which is known to exhibit a variety of biological activities and pharmacological activities. In this context, an organocatalytic asymmetric route for the synthesis of 3-aminooxindoles via reaction of isatin imine with α-acetoxy-β-ketoesters has been developed. The bifunctional Cinchona derived thiourea catalyzed the reaction of α-acetoxy-β-ketoesters derivatives with isatin imine to afford 3-substituted-aminooxindole derivatives in up to 93% yield, 95% enantiomeric excess and >20:1 diastereomeric ratio. The reaction was performed at room temperature for two hours using 10 mol% of catalyst, in the presence of 4Å molecular sieves in tetrahydrofuran as a solvent at ambient temperature. After the completion of the reaction, the pure product could be easily separated by using column chromatography using hexane and ethyl acetate as solvents. In conclusion, the catalytic potential of Cinchona derived chiral thiourea-tertiary amine catalyst was explored for an organocatalytic enantioselective Mannich reaction of β-ketoester derivatives with various isatin imine derivatives under mild conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=asymmetric%20synthesis" title="asymmetric synthesis">asymmetric synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=aminooxindoles" title=" aminooxindoles"> aminooxindoles</a>, <a href="https://publications.waset.org/abstracts/search?q=enantioselective" title=" enantioselective"> enantioselective</a>, <a href="https://publications.waset.org/abstracts/search?q=isatin%20imine" title=" isatin imine"> isatin imine</a> </p> <a href="https://publications.waset.org/abstracts/116751/exploring-the-bifunctional-organocatalysts-for-asymmetric-synthesis-of-3-substituted-3-aminooxindoles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/116751.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">114</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">59</span> Synthesis of Pendent Compartmental Ligand Derived from Polymethacrylate of 3-Formylsalicylic Acid Schiff Base and Its Application Studies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dhivya%20Arumugam">Dhivya Arumugam</a>, <a href="https://publications.waset.org/abstracts/search?q=Kaliyappan%20Thananjeyan"> Kaliyappan Thananjeyan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The monomer of (3-((4-(methacryloyloxy)phenylimino)methyl)-2-hydroxybenzoic acid) schiff base polymer was prepared by reacting methacryloyl chloride with imine compound derived from 3-formylsalisylic acid and 4- aminophenol. The monomer was polymerized in DMF at 70oC using benzoyl peroxide as free radical initiator. Polymer metal complex was obtained in DMF solution of polymer with aqueous solution of metal ions. The polymer and the polymer metal complex were characterized by elemental analysis and spectral studies. The elemental analysis data suggest that the metal to ligand ratio is 1:1 and hence, it acts as a binucleating compartmental ligand. The IR spectral data of these complexes suggest that the metals are coordinated through nitrogen of the imine group, the oxygen of carboxylate ion and the oxygen of the phenolic –OH group which also acts as the bridging ligand. The electronic spectra and magnetic moments of the polychelates shows that octahedral and square planar structure for Ni(II) and Cu(II) complexes respectively. X-ray diffraction studies revealed that polychelates are highly crystalline. The thermal and electrical properties, catalytic activity, structure property relationships are discussed. Further the synthesized polymer was used for metal uptake studies from waste water, which is one of the effective waste water treatment strategies. And also, the polymers and polychelates were investigated for antimicrobial activity with various microorganisms by using agar well diffusion method and the results have been discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acyclic%20compartmental%20ligands" title="acyclic compartmental ligands">acyclic compartmental ligands</a>, <a href="https://publications.waset.org/abstracts/search?q=binucleating%20ligand" title=" binucleating ligand"> binucleating ligand</a>, <a href="https://publications.waset.org/abstracts/search?q=3-formylsalicylic%20acid" title=" 3-formylsalicylic acid"> 3-formylsalicylic acid</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20radical%20polymerization" title=" free radical polymerization"> free radical polymerization</a>, <a href="https://publications.waset.org/abstracts/search?q=polluting%20ions" title=" polluting ions"> polluting ions</a>, <a href="https://publications.waset.org/abstracts/search?q=polychelate" title=" polychelate"> polychelate</a> </p> <a href="https://publications.waset.org/abstracts/150724/synthesis-of-pendent-compartmental-ligand-derived-from-polymethacrylate-of-3-formylsalicylic-acid-schiff-base-and-its-application-studies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/150724.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">125</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">58</span> Layer-By-Layer Deposition of Poly(Ethylene Imine) Nanolayers on Polypropylene Nonwoven Fabric: Electrostatic and Thermal Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dawid%20Stawski">Dawid Stawski</a>, <a href="https://publications.waset.org/abstracts/search?q=Silviya%20Halacheva"> Silviya Halacheva</a>, <a href="https://publications.waset.org/abstracts/search?q=Dorota%20Zieli%C5%84ska"> Dorota Zielińska</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The surface properties of many materials can be readily and predictably modified by the controlled deposition of thin layers containing appropriate functional groups and this research area is now a subject of widespread interest. The layer-by-layer (lbl) method involves depositing oppositely charged layers of polyelectrolytes onto the substrate material which are stabilized due to strong electrostatic forces between adjacent layers. This type of modification affords products that combine the properties of the original material with the superficial parameters of the new external layers. Through an appropriate selection of the deposited layers, the surface properties can be precisely controlled and readily adjusted in order to meet the requirements of the intended application. In the presented paper a variety of anionic (poly(acrylic acid)) and cationic (linear poly(ethylene imine), polymers were successfully deposited onto the polypropylene nonwoven using the lbl technique. The chemical structure of the surface before and after modification was confirmed by reflectance FTIR spectroscopy, volumetric analysis and selective dyeing tests. As a direct result of this work, new materials with greatly improved properties have been produced. For example, following a modification process significant changes in the electrostatic activity of a range of novel nanocomposite materials were observed. The deposition of polyelectrolyte nanolayers was found to strongly accelerate the loss of electrostatically generated charges and to increase considerably the thermal resistance properties of the modified fabric (the difference in T50% is over 20°C). From our results, a clear relationship between the type of polyelectrolyte layer deposited onto the flat fabric surface and the properties of the modified fabric was identified. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=layer-by-layer%20technique" title="layer-by-layer technique">layer-by-layer technique</a>, <a href="https://publications.waset.org/abstracts/search?q=polypropylene%20nonwoven" title=" polypropylene nonwoven"> polypropylene nonwoven</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20modification" title=" surface modification"> surface modification</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20properties" title=" surface properties"> surface properties</a> </p> <a href="https://publications.waset.org/abstracts/6453/layer-by-layer-deposition-of-polyethylene-imine-nanolayers-on-polypropylene-nonwoven-fabric-electrostatic-and-thermal-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6453.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">435</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">57</span> Thickness Effect on Concrete Fracture Toughness K1c </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Benzerara%20Mohammed">Benzerara Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Redjel%20Bachir"> Redjel Bachir</a>, <a href="https://publications.waset.org/abstracts/search?q=Kebaili%20Bachir"> Kebaili Bachir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The cracking of the concrete is a more crucial problem with the development of the complex structures related to technological progress. The projections in the knowledge of the breaking process make it possible today for better prevention of the risk of the fracture. The breaking strength brutal of a quasi-fragile material like the concrete called Toughness, is measured by a breaking value of the factor of intensity of the constraints K1C for which the crack is propagated, it is an intrinsic property of material. Many studies reported in the literature treating of the concrete were carried out on specimens which are in fact inadequate compared to the intrinsic characteristic to identify. We started from this established fact, in order to compare the evolution of the parameter of toughness K1C measured by calling upon ordinary concrete specimens of three prismatics geometries different (10*10*84) cm³ and (5*20*120) cm³ &(12*20*120) cm³ containing from the side notches various depths simulating of the cracks was set up. The notches are carried out using triangular pyramidal plates into manufactured out of sheet coated placed at the centre of the specimens at the time of the casting, then withdrawn to leave the trace of a crack. The tests are carried out in 3 points bending test in mode 1 of fracture, by using the techniques of mechanical fracture. The evolution of the parameter of toughness K1C measured with the three geometries specimens gives almost the same results. They are acceptable and return in the beach of the results determined by various researchers (toughness of the ordinary concrete turns to the turn of the 1 MPa √m). These results inform us about the presence of an economy on the level of the geometrie specimen (5*20*120) cm³, therefore to use plates specimens later if one wants to master the toughness of this material complexes, astonishing but always essential that is the concrete. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=elementary%20representative%20volume" title="elementary representative volume">elementary representative volume</a>, <a href="https://publications.waset.org/abstracts/search?q=concrete" title=" concrete"> concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=fissure" title=" fissure"> fissure</a>, <a href="https://publications.waset.org/abstracts/search?q=toughness" title=" toughness"> toughness</a> </p> <a href="https://publications.waset.org/abstracts/47060/thickness-effect-on-concrete-fracture-toughness-k1c" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47060.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">222</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">56</span> Modeling Revolution Shell Structures by MATLAB Programming-Axisymmetric and Nonaxisymmetric Shells</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamadi%20Djamal">Hamadi Djamal</a>, <a href="https://publications.waset.org/abstracts/search?q=Labiodh%20Bachir"> Labiodh Bachir</a>, <a href="https://publications.waset.org/abstracts/search?q=Ounis%20Abdelhafid"> Ounis Abdelhafid</a>, <a href="https://publications.waset.org/abstracts/search?q=Chaalane%20Mourad"> Chaalane Mourad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The objective of this work is setting numerically operational finite element CAXI_L for the axisymmetric and nonaxisymmetric shells. This element is based on the Reissner-Mindlin theory and mixed model formulation. The MATLAB language is used for the programming. In order to test the elaborated program, some applications are carried out. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=axisymmetric%20shells" title="axisymmetric shells">axisymmetric shells</a>, <a href="https://publications.waset.org/abstracts/search?q=nonaxisymmetric%20behaviour" title=" nonaxisymmetric behaviour"> nonaxisymmetric behaviour</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element" title=" finite element"> finite element</a>, <a href="https://publications.waset.org/abstracts/search?q=MATLAB%20programming" title=" MATLAB programming"> MATLAB programming</a> </p> <a href="https://publications.waset.org/abstracts/3301/modeling-revolution-shell-structures-by-matlab-programming-axisymmetric-and-nonaxisymmetric-shells" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3301.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">55</span> Physico-Chemical Parameters and Economic Evaluation of Bio-Ethanol Produced from Waste of Starting Dates in South Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Insaf%20Mehani">Insaf Mehani</a>, <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Bouchekima"> Bachir Bouchekima </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The fight against climate change and the replacement of fossil energies nearing exhaustion gradually emerge as major societal and economic challenges. It is possible to develop common dates of low commercial value, and put on the local and international market a new generation of products with high added values such as bio ethanol. Besides its use in chemical synthesis, bio ethanol can be blended with gasoline to produce a clean fuel while improving the octane. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bio-energy" title="bio-energy">bio-energy</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20dates" title=" waste dates"> waste dates</a>, <a href="https://publications.waset.org/abstracts/search?q=bio%20ethanol" title=" bio ethanol"> bio ethanol</a>, <a href="https://publications.waset.org/abstracts/search?q=Algeria" title=" Algeria"> Algeria</a> </p> <a href="https://publications.waset.org/abstracts/11491/physico-chemical-parameters-and-economic-evaluation-of-bio-ethanol-produced-from-waste-of-starting-dates-in-south-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11491.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">365</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">54</span> A Techno-Economic Evaluation of Bio Fuel Production from Waste of Starting Dates in South Algeria </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Insaf%20Mehani">Insaf Mehani</a>, <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Bouchekima"> Bachir Bouchekima </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The necessary reduction and progressive consumption of fossil fuels, whose scarcity is inevitable, involves mobilizing a set of alternatives.Renewable energy, including bio energy are an alternative to fossil fuel depletion and a way to fight against the harmful effects of climate change. It is possible to develop common dates of low commercial value, and put on the local and international market a new generation of products with high added values such as bio ethanol. Besides its use in chemical synthesis, bio ethanol can be blended with gasoline to produce a clean fuel while improving the octane. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bioenergy" title="bioenergy">bioenergy</a>, <a href="https://publications.waset.org/abstracts/search?q=dates" title=" dates"> dates</a>, <a href="https://publications.waset.org/abstracts/search?q=bioethanol" title=" bioethanol"> bioethanol</a>, <a href="https://publications.waset.org/abstracts/search?q=renewable%20energy" title=" renewable energy"> renewable energy</a>, <a href="https://publications.waset.org/abstracts/search?q=south%20Algeria" title=" south Algeria"> south Algeria</a> </p> <a href="https://publications.waset.org/abstracts/32613/a-techno-economic-evaluation-of-bio-fuel-production-from-waste-of-starting-dates-in-south-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32613.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">489</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">53</span> Bee Colony Optimization Applied to the Bin Packing Problem</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kenza%20Aida%20Amara">Kenza Aida Amara</a>, <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Djebbar"> Bachir Djebbar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We treat the two-dimensional bin packing problem which involves packing a given set of rectangles into a minimum number of larger identical rectangles called bins. This combinatorial problem is NP-hard. We propose a pretreatment for the oriented version of the problem that allows the valorization of the lost areas in the bins and the reduction of the size problem. A heuristic method based on the strategy first-fit adapted to this problem is presented. We present an approach of resolution by bee colony optimization. Computational results express a comparison of the number of bins used with and without pretreatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bee%20colony%20optimization" title="bee colony optimization">bee colony optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=bin%20packing" title=" bin packing"> bin packing</a>, <a href="https://publications.waset.org/abstracts/search?q=heuristic%20algorithm" title=" heuristic algorithm"> heuristic algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=pretreatment" title=" pretreatment"> pretreatment</a> </p> <a href="https://publications.waset.org/abstracts/65005/bee-colony-optimization-applied-to-the-bin-packing-problem" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65005.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">634</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">52</span> Sizing of Hybrid Source Battery/Supercapacitor for Automotive Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Laid%20Degaa">Laid Degaa</a>, <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Bendjedia"> Bachir Bendjedia</a>, <a href="https://publications.waset.org/abstracts/search?q=Nassim%20Rizoug"> Nassim Rizoug</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Saidane"> Abdelkader Saidane</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Energy storage system is a key aspect for the development of clean cars. The work proposed here deals with the modeling of hybrid storage sources composed of a combination of lithium-ion battery and supercapacitors. Simulation results show the performance of the active model for a hybrid source and confirm the feasibility of our approach. In this context, sizing of the electrical energy supply is carried out. The aim of this sizing is to propose an 'optimal' solution that improves the performance of electric vehicles in term of weight, cost and aging. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=battery" title="battery">battery</a>, <a href="https://publications.waset.org/abstracts/search?q=electric%20vehicles" title=" electric vehicles"> electric vehicles</a>, <a href="https://publications.waset.org/abstracts/search?q=energy" title=" energy"> energy</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20storage" title=" hybrid storage"> hybrid storage</a>, <a href="https://publications.waset.org/abstracts/search?q=supercapacitor" title=" supercapacitor"> supercapacitor</a> </p> <a href="https://publications.waset.org/abstracts/81313/sizing-of-hybrid-source-batterysupercapacitor-for-automotive-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/81313.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">792</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">51</span> Study of Hybrid Cells Based on Perovskite Materials Using Oghmasimultion</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nadia%20Bachir%20%28Dahmani%29">Nadia Bachir (Dahmani)</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatima%20Zohra%20Otmani"> Fatima Zohra Otmani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Due to its interesting optoelectronic properties, methylammonium perovskite CH3NH3PbI3 is used as the active layer in the development of several solar cells. In this work, the hybrid (organic-inorganic) cell with the architecture FTO/pedotpss/CH3NH3PbI3/pcdtbt/Al is simulated using the Organic and Hybrid Material Nano Simulation Tool (OghmaNano). We studied the influence of certain parameters, such as thickness, on the characteristics of the solar cell. The effect of the device temperature was also investigated. The photovoltaic characteristic curves, such as current-voltage (j-V), are presented in this work. The optimized final parameters are Voc = 0.947 V, FF = 0.8034%, and PCE = 23.16%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=OghmaNano%20software" title="OghmaNano software">OghmaNano software</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20perovskite%20cell" title=" hybrid perovskite cell"> hybrid perovskite cell</a>, <a href="https://publications.waset.org/abstracts/search?q=CH3NH3PbI3" title=" CH3NH3PbI3"> CH3NH3PbI3</a>, <a href="https://publications.waset.org/abstracts/search?q=conversion%20efficiency" title=" conversion efficiency"> conversion efficiency</a> </p> <a href="https://publications.waset.org/abstracts/193533/study-of-hybrid-cells-based-on-perovskite-materials-using-oghmasimultion" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/193533.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">14</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">50</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">49</span> Influence of Chemical Treatment on Elastic Properties of the Band Cotton Crepe 100%</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Chemani">Bachir Chemani</a>, <a href="https://publications.waset.org/abstracts/search?q=Rachid%20Halfaoui"> Rachid Halfaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Madani%20Maalem"> Madani Maalem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The manufacturing technology of band cotton is very delicate and depends to choice of certain parameters such as torsion of warp yarn. The fabric elasticity is achieved without the use of any elastic material, chemical expansion, artificial or synthetic and it’s capable of creating pressures useful for therapeutic treatments.Before use, the band is subjected to treatments of specific preparation for obtaining certain elasticity, however, during its treatment, there are some regression parameters. The dependence of manufacturing parameters on the quality of the chemical treatment was confirmed. The aim of this work is to improve the properties of the fabric through the development of manufacturing technology appropriately. Finally for the treatment of the strip pancake 100% cotton, a treatment method is recommended. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=elastic" title="elastic">elastic</a>, <a href="https://publications.waset.org/abstracts/search?q=cotton" title=" cotton"> cotton</a>, <a href="https://publications.waset.org/abstracts/search?q=processing" title=" processing"> processing</a>, <a href="https://publications.waset.org/abstracts/search?q=torsion" title=" torsion"> torsion</a> </p> <a href="https://publications.waset.org/abstracts/9532/influence-of-chemical-treatment-on-elastic-properties-of-the-band-cotton-crepe-100" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9532.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">387</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">48</span> Stress Study in Implants Dental</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Benlebna">M. Benlebna</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Serier"> B. Serier</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Bachir%20Bouiadjra"> B. Bachir Bouiadjra</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Khalkhal"> S. Khalkhal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study focuses on the mechanical behavior of a dental prosthesis subjected to dynamic loads chewing. It covers a three-dimensional analysis by the finite element method, the level of distribution of equivalent stresses induced in the bone between the implants (depending on the number of implants). The studied structure, consisting of a braced, implant and mandibular bone is subjected to dynamic loading of variable amplitude in three directions corrono-apical, mesial-distal and bucco-lingual. These efforts simulate those of mastication. We show that compared to the implantation of a single implant, implantology using two implants promotes the weakening of the bones. This weakness is all the more likely that the implants are located in close proximity to one another. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=stress" title="stress">stress</a>, <a href="https://publications.waset.org/abstracts/search?q=bone" title=" bone"> bone</a>, <a href="https://publications.waset.org/abstracts/search?q=dental%20implant" title=" dental implant"> dental implant</a>, <a href="https://publications.waset.org/abstracts/search?q=distribution" title=" distribution"> distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=stress%20levels" title=" stress levels"> stress levels</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic" title=" dynamic"> dynamic</a>, <a href="https://publications.waset.org/abstracts/search?q=effort" title=" effort"> effort</a>, <a href="https://publications.waset.org/abstracts/search?q=interaction" title=" interaction"> interaction</a>, <a href="https://publications.waset.org/abstracts/search?q=prosthesis" title=" prosthesis"> prosthesis</a> </p> <a href="https://publications.waset.org/abstracts/13570/stress-study-in-implants-dental" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13570.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">404</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">47</span> Features Dimensionality Reduction and Multi-Dimensional Voice-Processing Program to Parkinson Disease Discrimination</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Meghraoui">Djamila Meghraoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Boudraa"> Bachir Boudraa</a>, <a href="https://publications.waset.org/abstracts/search?q=Thouraya%20Meksen"> Thouraya Meksen</a>, <a href="https://publications.waset.org/abstracts/search?q=M.Boudraa"> M.Boudraa </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Parkinson's disease is a pathology that involves characteristic perturbations in patients’ voices. This paper describes a proposed method that aims to diagnose persons with Parkinson (PWP) by analyzing on line their voices signals. First, Thresholds signals alterations are determined by the Multi-Dimensional Voice Program (MDVP). Principal Analysis (PCA) is exploited to select the main voice principal componentsthat are significantly affected in a patient. The decision phase is realized by a Mul-tinomial Bayes (MNB) Classifier that categorizes an analyzed voice in one of the two resulting classes: healthy or PWP. The prediction accuracy achieved reaching 98.8% is very promising. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Parkinson%E2%80%99s%20disease%20recognition" title="Parkinson’s disease recognition">Parkinson’s disease recognition</a>, <a href="https://publications.waset.org/abstracts/search?q=PCA" title=" PCA"> PCA</a>, <a href="https://publications.waset.org/abstracts/search?q=MDVP" title=" MDVP"> MDVP</a>, <a href="https://publications.waset.org/abstracts/search?q=multinomial%20Naive%20Bayes" title=" multinomial Naive Bayes"> multinomial Naive Bayes</a> </p> <a href="https://publications.waset.org/abstracts/59181/features-dimensionality-reduction-and-multi-dimensional-voice-processing-program-to-parkinson-disease-discrimination" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59181.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">278</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">46</span> A Comparative Analysis of Multicarrier SPWM Strategies for Five-Level Flying Capacitor Inverter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Belmadani">Bachir Belmadani</a>, <a href="https://publications.waset.org/abstracts/search?q=Rachid%20Taleb"> Rachid Taleb</a>, <a href="https://publications.waset.org/abstracts/search?q=Zinelaabidine%20Boudjema"> Zinelaabidine Boudjema</a>, <a href="https://publications.waset.org/abstracts/search?q=Adil%20Yahdou"> Adil Yahdou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Carrier-based methods have been used widely for switching of multilevel inverters due to their simplicity, flexibility and reduced computational requirements compared to space vector modulation (SVM). This paper focuses on Multicarrier Sinusoidal Pulse Width Modulation (MCSPWM) strategy for the three phase Five-Level Flying Capacitor Inverter (5LFCI). The inverter is simulated for Induction Motor (IM) load and Total Harmonic Distortion (THD) for output waveforms is observed for different controlling schemes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=flying%20capacitor%20inverter" title="flying capacitor inverter">flying capacitor inverter</a>, <a href="https://publications.waset.org/abstracts/search?q=multicarrier%20sinusoidal%20pulse%20width%20modulation" title=" multicarrier sinusoidal pulse width modulation"> multicarrier sinusoidal pulse width modulation</a>, <a href="https://publications.waset.org/abstracts/search?q=space%20vector%20modulation" title=" space vector modulation"> space vector modulation</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20harmonic%20distortion" title=" total harmonic distortion"> total harmonic distortion</a>, <a href="https://publications.waset.org/abstracts/search?q=induction%20motor" title=" induction motor"> induction motor</a> </p> <a href="https://publications.waset.org/abstracts/45816/a-comparative-analysis-of-multicarrier-spwm-strategies-for-five-level-flying-capacitor-inverter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45816.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">410</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">45</span> FE Analysis of the Notch Effect on the Behavior of Repaired Crack with Bonded Composite Patch in Aircraft Structures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Faycal%20Benyahia">Faycal Benyahia</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelmohsen%20Albedah"> Abdelmohsen Albedah</a>, <a href="https://publications.waset.org/abstracts/search?q=Bel%20Abbes%20Bachir%20Bouiadjra"> Bel Abbes Bachir Bouiadjra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the finite element analysis is applied to study the performance of the bonded composite reinforcement or repair for reducing stress concentration at a semi-circular lateral notch and repairing cracks emanating from this kind of notch. The effects of the adhesive properties on the variation of the stress intensity factor at the crack tip were highlighted. The obtained results show that the stress concentration factor at the notch tip is reduced about 30% and the maximal reduction of the stress intensity factor is about 80%. The adhesive properties must be optimized in order to increase the performance of the patch repair or reinforcement. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bonded%20repair" title="bonded repair">bonded repair</a>, <a href="https://publications.waset.org/abstracts/search?q=notch" title=" notch"> notch</a>, <a href="https://publications.waset.org/abstracts/search?q=crack" title=" crack"> crack</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesive" title=" adhesive"> adhesive</a>, <a href="https://publications.waset.org/abstracts/search?q=composite" title=" composite"> composite</a> </p> <a href="https://publications.waset.org/abstracts/3813/fe-analysis-of-the-notch-effect-on-the-behavior-of-repaired-crack-with-bonded-composite-patch-in-aircraft-structures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3813.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">390</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">44</span> Effect of Water Absorption on the Fatigue Behavior of Glass/Polyester Composite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Djamel%20Djeghader">Djamel Djeghader</a>, <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Redjel"> Bachir Redjel</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The composite materials of glass fibers can be used as a repair material for damage elements under repeated stresses, and in various environments. A cyclic bending characterization of a glass/polyester composite material was carried out with consideration of the period of immersion in water. These tests describe the behavior of materials and identify the mechanical fatigue characteristics using the Wohler Curve for different immersion time: 0, 90, 180 and 270 days in water. These curves are characterized by a dispersion in the lifetimes were modeled by straight whose intercepts are very similar and comparable to the static strength. This material deteriorates fatigue at a constant rate, which increases with increasing immersion time in water at a constant speed. The endurance limit seems to be independent of the immersion time in the water. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fatigue" title="fatigue">fatigue</a>, <a href="https://publications.waset.org/abstracts/search?q=composite" title=" composite"> composite</a>, <a href="https://publications.waset.org/abstracts/search?q=glass" title=" glass"> glass</a>, <a href="https://publications.waset.org/abstracts/search?q=polyester" title=" polyester"> polyester</a>, <a href="https://publications.waset.org/abstracts/search?q=immersion" title=" immersion"> immersion</a>, <a href="https://publications.waset.org/abstracts/search?q=wohler" title=" wohler"> wohler</a> </p> <a href="https://publications.waset.org/abstracts/36889/effect-of-water-absorption-on-the-fatigue-behavior-of-glasspolyester-composite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/36889.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">314</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> Sliding Mode Control of an Internet Teleoperated PUMA 600 Robot</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdallah%20Ghoul">Abdallah Ghoul</a>, <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Ouamri"> Bachir Ouamri</a>, <a href="https://publications.waset.org/abstracts/search?q=Ismail%20Khalil%20Bousserhane"> Ismail Khalil Bousserhane</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we have developed a sliding mode controller for PUMA 600 manipulator robot, to control the remote robot a teleoperation system was developed. This system includes two sites, local and remote. The sliding mode controller is installed at the remote site. The client asks for a position through an interface and receives the real positions after running of the task by the remote robot. Both sites are interconnected via the Internet. In order to verify the effectiveness of the sliding mode controller, that is compared with a classic PID controller. The developed approach is tested on a virtual robot. The results confirmed the high performance of this approach. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=internet" title="internet">internet</a>, <a href="https://publications.waset.org/abstracts/search?q=manipulator%20robot" title=" manipulator robot"> manipulator robot</a>, <a href="https://publications.waset.org/abstracts/search?q=PID%20controller" title=" PID controller"> PID controller</a>, <a href="https://publications.waset.org/abstracts/search?q=remote%20control" title=" remote control"> remote control</a>, <a href="https://publications.waset.org/abstracts/search?q=sliding%20mode" title=" sliding mode"> sliding mode</a>, <a href="https://publications.waset.org/abstracts/search?q=teleoperation" title=" teleoperation"> teleoperation</a> </p> <a href="https://publications.waset.org/abstracts/78157/sliding-mode-control-of-an-internet-teleoperated-puma-600-robot" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78157.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">330</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> Valorization of Clay Material in the Road Sector By Adding Granulated Recycled Plastic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ouaaz%20Oum%20Essaad">Ouaaz Oum Essaad</a>, <a href="https://publications.waset.org/abstracts/search?q=Melbouci%20Bachir"> Melbouci Bachir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The experimental study conducted has a dual purpose: to valorize the clay material in the road domain and improve the lift of the shape layers by strengthening with plastic waste (in the form of aggregates). To do this, six mixtures of Clay and sand of different percentages were studied: 100% Clay, 95% Clay + 05% Sand, 90% Clay + 10% Sand, 85% Clay + 15% Sand, 80% Clay + 20% Sand, 75% Clay + 25% Sand. Proctor compaction and simple compression tests have been carried out on mixtures (sand + clay + plastic waste). The results obtained show a clear evolution of the characteristics of the Proctor test and the compressive strength of the mixtures according to the different types and percentages of the recycled plastic Plasticity and consistency index are important parameters that play a role in the toughness of plastic soil. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=valorization" title="valorization">valorization</a>, <a href="https://publications.waset.org/abstracts/search?q=recycling" title=" recycling"> recycling</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20mixture" title=" soil mixture"> soil mixture</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20tests" title=" mechanical tests"> mechanical tests</a> </p> <a href="https://publications.waset.org/abstracts/163504/valorization-of-clay-material-in-the-road-sector-by-adding-granulated-recycled-plastic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163504.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">102</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> Theoretical Density Study of Winding Yarns on Spool</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Chemani">Bachir Chemani</a>, <a href="https://publications.waset.org/abstracts/search?q=Rachid%20Halfaoui"> Rachid Halfaoui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of work is to define the distribution density of winding yarn on cylindrical and conical bobbins. It is known that parallel winding gives greater density and more regular distribution, but the unwinding of yarn is much more difficult for following process. The conical spool has an enormous advantage during unwinding and may contain a large amount of yarns, but the density distribution is not regular because of difference in diameters. The variation of specific density over the reel height is explained generally by the sudden change of winding speed due to direction movement variation of yarn. We determined the conditions of uniform winding and developed a calculate model to the change of the specific density of winding wire over entire spool height. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=textile" title="textile">textile</a>, <a href="https://publications.waset.org/abstracts/search?q=cylindrical%20bobbins" title=" cylindrical bobbins"> cylindrical bobbins</a>, <a href="https://publications.waset.org/abstracts/search?q=conical%20bobbins" title=" conical bobbins"> conical bobbins</a>, <a href="https://publications.waset.org/abstracts/search?q=parallel%20winding" title=" parallel winding"> parallel winding</a>, <a href="https://publications.waset.org/abstracts/search?q=cross%20winding" title=" cross winding"> cross winding</a> </p> <a href="https://publications.waset.org/abstracts/16154/theoretical-density-study-of-winding-yarns-on-spool" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16154.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">377</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> Kinematic Optimization of Energy Extraction Performances for Flapping Airfoil by Using Radial Basis Function Method and Genetic Algorithm</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Maatar">M. Maatar</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Mekadem"> M. Mekadem</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Medale"> M. Medale</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Hadjed"> B. Hadjed</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Imine"> B. Imine</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, numerical simulations have been carried out to study the performances of a flapping wing used as an energy collector. Metamodeling and genetic algorithms are used to detect the optimal configuration, improving power coefficient and/or efficiency. Radial basis functions and genetic algorithms have been applied to solve this problem. Three optimization factors are controlled, namely dimensionless heave amplitude h₀, pitch amplitude θ₀ and flapping frequency f. ANSYS FLUENT software has been used to solve the principal equations at a Reynolds number of 1100, while the heave and pitch motion of a NACA0015 airfoil has been realized using a developed function (UDF). The results reveal an average power coefficient and efficiency of 0.78 and 0.338 with an inexpensive low-fidelity model and a total relative error of 4.1% versus the simulation. The performances of the simulated optimum RBF-NSGA-II have been improved by 1.2% compared with the validated model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=numerical%20simulation" title="numerical simulation">numerical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=flapping%20wing" title=" flapping wing"> flapping wing</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20extraction" title=" energy extraction"> energy extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20coefficient" title=" power coefficient"> power coefficient</a>, <a href="https://publications.waset.org/abstracts/search?q=efficiency" title=" efficiency"> efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=RBF" title=" RBF"> RBF</a>, <a href="https://publications.waset.org/abstracts/search?q=NSGA-II" title=" NSGA-II"> NSGA-II</a> </p> <a href="https://publications.waset.org/abstracts/186123/kinematic-optimization-of-energy-extraction-performances-for-flapping-airfoil-by-using-radial-basis-function-method-and-genetic-algorithm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186123.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">43</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> Degradation of the Mechanical Properties of the Polypropylene Talc Nanocomposite in Chemical Environment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Ouadah%20Bouakkaz">Ahmed Ouadah Bouakkaz</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Elmeguenni"> Mohamed Elmeguenni</a>, <a href="https://publications.waset.org/abstracts/search?q=Bel%20Abbes%20Bachir%20Bouiadjra"> Bel Abbes Bachir Bouiadjra</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Belhouari"> Mohamed Belhouari</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdulmohsen%20Albedah"> Abdulmohsen Albedah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the effect of the chemical environment on the mechanical properties of the polypropylene-talc composite was analyzed. The talc proportion was varied in order to highlight the combined effects of time of immersion in the chemical environment 'benzene' and talc concentration on the mechanical properties of the composite. Tensile test was carried out to evaluate the mechanical properties of PP-talc composite and to analyze the effect of the immersion time on the variation of these properties. The obtained results show that increasing the time of immersion has a very negative effect on the mechanical strength of the PP-talc composite, but this effect can be significantly reduced by the augmentation of the talc proportion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=polypropylene%20%28PP%29" title="polypropylene (PP)">polypropylene (PP)</a>, <a href="https://publications.waset.org/abstracts/search?q=talc" title=" talc"> talc</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposite" title=" nanocomposite"> nanocomposite</a>, <a href="https://publications.waset.org/abstracts/search?q=degradation" title=" degradation"> degradation</a> </p> <a href="https://publications.waset.org/abstracts/77753/degradation-of-the-mechanical-properties-of-the-polypropylene-talc-nanocomposite-in-chemical-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/77753.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">385</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> Molecular Docking and Synthesis of Nitrogen-Containing Bisphosphonates </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Ghalem">S. Ghalem</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Mesmoudi"> M. Mesmoudi</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Daoudand"> I. Daoudand</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Allali"> H. Allali</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The nitrogen-containing bisphosphonates (N-BPs) are well established as the treatments of choice for disorders of excessive bone resorption, myeloma and bone metastases, and osteoporosis. They inhibit farnesyl pyrophosphate synthase (FFPS), a key enzyme in the mevalonate pathway, resulting in inhibition of the prenylation of small GTP-binding proteins in osteoclasts and disruption of their cytoskeleton, adhesion/spreading, and invasion of cancer cells. A very few examples for synthesis of α-amino bisphosphonates based on several amino acids are known from the literature. In the present work, esters of aminoacid react with ketophsophonate (or their analog acid or acyl) to afford the desired products, α-iminophosphonates. The reaction of imine with dimethyl phosphate in the presence of catalytic amount of I2 give ester of α-aminobisphosphonate as sole product in good yield. Finally, we used computational docking methods to predict how several α-aminobisphosphonates bind to FPPS and how R and X influence. Pamidronate, β-aminobisphosphonate already marketed, was used as reference. These results are of interest since they represent a new and simple way to sythesize α-aminobisphosphonates with a free COOH group increased by R2 functionalisable and opening up the possibility of using the molecular docking to facilitate the design of other, novel FFPS inhibitors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=drug%20research" title="drug research">drug research</a>, <a href="https://publications.waset.org/abstracts/search?q=cancer" title=" cancer"> cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%B1-amino%20bisphosphonates" title=" α-amino bisphosphonates"> α-amino bisphosphonates</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20docking" title=" molecular docking"> molecular docking</a> </p> <a href="https://publications.waset.org/abstracts/43154/molecular-docking-and-synthesis-of-nitrogen-containing-bisphosphonates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43154.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">37</span> Hybrid Control Strategy for Nine-Level Asymmetrical Cascaded H-Bridge Inverter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Belmadani">Bachir Belmadani</a>, <a href="https://publications.waset.org/abstracts/search?q=Rachid%20Taleb"> Rachid Taleb</a>, <a href="https://publications.waset.org/abstracts/search?q=M%E2%80%99hamed%20Helaimi"> M’hamed Helaimi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Multilevel inverters are well used in high power electronic applications because of their ability to generate a very good quality of waveforms, reducing switching frequency, and their low voltage stress across the power devices. This paper presents the hybrid pulse-width modulation (HPWM) strategy of a uniform step asymmetrical cascaded H-bridge nine-level Inverter (USACHB9LI). The HPWM approach is compared to the well-known sinusoidal pulse-width modulation (SPWM) strategy. Simulation results demonstrate the better performances and technical advantages of the HPWM controller in feeding a high power induction motor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=uniform%20step%20asymmetrical%20cascaded%20h-bridge%20high-level%20inverter" title="uniform step asymmetrical cascaded h-bridge high-level inverter">uniform step asymmetrical cascaded h-bridge high-level inverter</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20pwm" title=" hybrid pwm"> hybrid pwm</a>, <a href="https://publications.waset.org/abstracts/search?q=sinusoidal%20pwm" title=" sinusoidal pwm"> sinusoidal pwm</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20power%20induction%20motor" title=" high power induction motor"> high power induction motor</a> </p> <a href="https://publications.waset.org/abstracts/29884/hybrid-control-strategy-for-nine-level-asymmetrical-cascaded-h-bridge-inverter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29884.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">571</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> Computation of Thermal Stress Intensity Factor for Bonded Composite Repairs in Aircraft Structures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fay%C3%A7al%20Benyahia">Fayçal Benyahia</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelmohsen%20Albedah"> Abdelmohsen Albedah</a>, <a href="https://publications.waset.org/abstracts/search?q=Bel%20Abbes%20Bachir%20Bouiadjra"> Bel Abbes Bachir Bouiadjra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study the Finite element method is used to analyse the effect of the thermal residual stresses resulting from adhesive curing on the performances of the bonded composite repair in aircraft structures. The stress intensity factor at the crack tip is chosen as fracture criterion in order to estimate the repair performances. The obtained results show that the presence of the thermal residual stresses reduces considerably the repair performances and consequently decreases the fatigue life of cracked structures. The effects of the curing temperature, the adhesive properties and the adhesive thickness on the Stress Intensity Factor (SIF) variation with thermal stresses are also analysed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bonded%20composite%20repair" title="bonded composite repair">bonded composite repair</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20stress" title=" residual stress"> residual stress</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesion" title=" adhesion"> adhesion</a>, <a href="https://publications.waset.org/abstracts/search?q=stress%20transfer" title=" stress transfer"> stress transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20analysis" title=" finite element analysis"> finite element analysis</a> </p> <a href="https://publications.waset.org/abstracts/5385/computation-of-thermal-stress-intensity-factor-for-bonded-composite-repairs-in-aircraft-structures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5385.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">417</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> Synthesis of a Hybrid Material (PVA/SiO₂/TiO₂) by Sol-Gel Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gueridi%20Bachir">Gueridi Bachir</a>, <a href="https://publications.waset.org/abstracts/search?q=Dadache%20Derradji"> Dadache Derradji</a>, <a href="https://publications.waset.org/abstracts/search?q=Rouabah%20Farid"> Rouabah Farid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work is focused on the preparation and characterization of poly (vinyl alcohol)/silica gel/Nano-TiO₂, and the study of titanium dioxide (TiO₂) nanoparticles 1% on the properties of poly (vinyl alcohol) (PVA)/silica films. Fourier transform infrared (FT-IR), water contact angle, ultraviolet-visible spectrometry (UV-VIS)) were used to characterize the hybrid films obtained. The PVA/SiO₂/Nano-TiO₂ films were successfully synthesized. Owing to the FT-IR Analysis, the chemical bonds have clearly shown that the PVA backbone is linked to the (SiO₂-TiO₂) network. UV-VIS tests indicated that the hybrid films' UV shielding properties were drastically enhanced as a result of the addition of TiO₂. The water contact angle results revealed that TiO₂ nanoparticles used as a doping compound possess an important influence on the hydrophilicity of PVA/SiO₂ as thin films. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sol-gel%20method" title="sol-gel method">sol-gel method</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20materials" title=" hybrid materials"> hybrid materials</a>, <a href="https://publications.waset.org/abstracts/search?q=PVA%2FSIO%E2%82%82%2FTiO%E2%82%82" title=" PVA/SIO₂/TiO₂"> PVA/SIO₂/TiO₂</a>, <a href="https://publications.waset.org/abstracts/search?q=spectroscopical%20characterization" title=" spectroscopical characterization"> spectroscopical characterization</a> </p> <a href="https://publications.waset.org/abstracts/194584/synthesis-of-a-hybrid-material-pvasio2tio2-by-sol-gel-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/194584.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">12</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> Study of Self-Assembled Photocatalyst by Metal-Terpyridine Interactions in Polymer Network</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dong-Cheol%20Jeong">Dong-Cheol Jeong</a>, <a href="https://publications.waset.org/abstracts/search?q=Jookyung%20Lee"> Jookyung Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu%20Hyeon%20Ro"> Yu Hyeon Ro</a>, <a href="https://publications.waset.org/abstracts/search?q=Changsik%20Song"> Changsik Song</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The design and synthesis of photo-active polymeric systems are important in regard to solar energy harvesting and utilization. In this study, we synthesized photo-active polymer, thin films, and polymer gel via iterative self-assembly using reversible metal-terpyridine (M-tpy) interactions. The photocurrent generated in the polymeric thin films with Zn(II) was much higher than those of other films. Apparent diffusion rate constant (kapp) was measured for the electron hopping process via potential-step chronoamperometry. As a result, the kapp for the polymeric thin films with Zn(II) was almost two times larger than those with other metal ions. We found that the anodic photocurrents increased with the inclusion of the multi-walled carbon nanotube (MWNT) layer. Inclusion of MWNTs can provide efficient electron transfer pathways. In addition, polymer gel based on interactions between terpyridine and metal ions was shown the photocatalytic activity. Interestingly, in the Mg-terpyridine gel, the reaction rate of benzylamine to imine photo-oxidative coupling was faster than Fe-terpyridine gel because the Mg-terpyridine gel has two steps electron transfer pathway but Fe-terpyridine gel has three steps electron transfer pathway. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=terpyridine" title="terpyridine">terpyridine</a>, <a href="https://publications.waset.org/abstracts/search?q=photocatalyst" title=" photocatalyst"> photocatalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=self-assebly" title=" self-assebly"> self-assebly</a>, <a href="https://publications.waset.org/abstracts/search?q=metal-ligand" title=" metal-ligand"> metal-ligand</a> </p> <a href="https://publications.waset.org/abstracts/50618/study-of-self-assembled-photocatalyst-by-metal-terpyridine-interactions-in-polymer-network" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50618.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">308</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=Bachir%20Imine&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Bachir%20Imine&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Bachir%20Imine&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"> 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