Search results for: L. Khene

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Khene</title> <meta name="description" content="Search results for: L. Khene"> <meta name="keywords" content="L. Khene"> <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="L. 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Khene"> <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> 3</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: L. Khene</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3</span> Nanoparticles on Biological Biomarquers Models: Paramecium Tetraurelia and Helix aspersa</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20Djebar">H. Djebar</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Khene"> L. Khene</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Boucenna"> M. Boucenna</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Djebar"> M. R. Djebar</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20N.%20Khebbeb"> M. N. Khebbeb</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Djekoun"> M. Djekoun</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Currently in toxicology, use of alternative models permits to understand the mechanisms of toxicity at different levels of cells. Objectives of our research concern the determination of NPs ZnO, TiO2, AlO2, and FeO2 effect on ciliate protist freshwater Paramecium sp and Helix aspersa. The result obtained show that NPs increased antioxidative enzyme activity like catalase, glutathione –S-transferase and level GSH. Also, cells treated with high concentrations of NPs showed a high level of MDA. In conclusion, observations from growth and enzymatic parameters suggest on one hand that treatment with NPs provokes an oxidative stress and on the other that snale and paramecium are excellent alternatives models for ecotoxicological studies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=NPs" title="NPs">NPs</a>, <a href="https://publications.waset.org/abstracts/search?q=GST" title=" GST"> GST</a>, <a href="https://publications.waset.org/abstracts/search?q=catalase" title=" catalase"> catalase</a>, <a href="https://publications.waset.org/abstracts/search?q=GSH" title=" GSH"> GSH</a>, <a href="https://publications.waset.org/abstracts/search?q=MDA" title=" MDA"> MDA</a>, <a href="https://publications.waset.org/abstracts/search?q=toxicity" title=" toxicity"> toxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=snale%20and%20paramecium" title=" snale and paramecium"> snale and paramecium</a> </p> <a href="https://publications.waset.org/abstracts/49322/nanoparticles-on-biological-biomarquers-models-paramecium-tetraurelia-and-helix-aspersa" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49322.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">282</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">2</span> YBa2Cu3O7-d Nanoparticles Doped by Ferromagnetic Nanoparticles of Y3Fe5O12</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samir%20Khene">Samir Khene</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Present and future industrial uses of high critical temperature superconductors require high critical temperatures TC and strong current densities JC. These two aims constitute the two motivations of the scientific research in this domain. The most significant feature of any superconductor, from the viewpoint of uses, is the maximum electrical transport current density that this superconductor is capable of withstanding without loss of energy. In this work, vortices pinning in conventional and high-TC superconductors will be studied. Our experiments on vortices pinning in single crystals and nanoparticles of YBa2Cu3O7- and La1.85 Sr0.15CuO will be presented. It will be given special attention to the study of the YBa2Cu3O7- nanoparticles doped by ferromagnetic nanoparticles of Y3Fe5O12. The ferromagnetism and superconductivity coexistence in this compound will be demonstrated, and the influence of these ferromagnetic nanoparticles on the variations of the critical current density JC in YBa2Cu3O7- nanoparticles as a function of applied field H and temperature T will be studied. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ferromagnetism" title="ferromagnetism">ferromagnetism</a>, <a href="https://publications.waset.org/abstracts/search?q=superconductivity" title=" superconductivity"> superconductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=coexistence" title=" coexistence"> coexistence</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20material" title=" magnetic material"> magnetic material</a> </p> <a href="https://publications.waset.org/abstracts/167274/yba2cu3o7-d-nanoparticles-doped-by-ferromagnetic-nanoparticles-of-y3fe5o12" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167274.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">77</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">1</span> Magnetic Study on Ybₐ₂Cu₃O₇₋δ Nanoparticles Doped by Ferromagnetic Nanoparticles of Y₃Fe₅O₁₂</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samir%20Khene">Samir Khene</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Present and future industrial uses of high critical temperature superconductors require high critical temperatures TC and strong current densities JC. These two aims constitute the two motivations of scientific research in this domain. The most significant feature of any superconductor, from the viewpoint of uses, is the maximum electrical transport current density that this superconductor is capable of withstanding without loss of energy. In this work, vortices pinning in conventional and high-TC superconductors will be studied. Our experiments on vortices pinning in single crystals and nanoparticles of YBₐ₂Cu₃O₇₋δ and La₁.₈₅ Sr₀.₁₅CuO will be presented. It will be given special attention to the study of the YBₐ₂Cu₃O₇₋δ nanoparticles doped by ferromagnetic nanoparticles of Y₃Fe₅O₁₂. The ferromagnetism and superconductivity coexistence in this compound will be demonstrated, and the influence of these ferromagnetic nanoparticles on the variations of the critical current density JC in YBₐ₂Cu₃O7₇₋δ nanoparticles as a function of applied field H and temperature T will be studied. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=superconductors" title="superconductors">superconductors</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20critical%20temperature" title=" high critical temperature"> high critical temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=vortices%20pinning" title=" vortices pinning"> vortices pinning</a>, <a href="https://publications.waset.org/abstracts/search?q=nanoparticles" title=" nanoparticles"> nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=ferromagnetism" title=" ferromagnetism"> ferromagnetism</a>, <a href="https://publications.waset.org/abstracts/search?q=coexistence" title=" coexistence"> coexistence</a> </p> <a href="https://publications.waset.org/abstracts/161747/magnetic-study-on-yb2cu3o7d-nanoparticles-doped-by-ferromagnetic-nanoparticles-of-y3fe5o12" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161747.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">69</span> </span> </div> </div> </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 href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" 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Search results for: L. Khene