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Brahmi</title> <meta name="description" content="Search results for: Lamia Brahmi"> <meta name="keywords" content="Lamia Brahmi"> <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 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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="Lamia Brahmi"> <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> 37</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Lamia Brahmi</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">37</span> Photocatalytic Degradation of Acid Dye Over Ag, Loaded ZnO Under UV/Solar Light</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Farida%20Kaouah">Farida Kaouah</a>, <a href="https://publications.waset.org/abstracts/search?q=Wassila%20Hachi"> Wassila Hachi</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Brahmi"> Lamia Brahmi</a>, <a href="https://publications.waset.org/abstracts/search?q=Chahida%20Ousselah"> Chahida Ousselah</a>, <a href="https://publications.waset.org/abstracts/search?q=Salim%20Boumaza"> Salim Boumaza</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Trari"> Mohamed Trari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The feasibility of using solar irradiation instead of UV light in photocatalysis is a promising approach for water treatment. In this study, photocatalytic degradation of a widely used textile dye, Acid Blue 25 (AB25), with noble metal loaded ZnO photocatalyst (Ag/ZnO), was investigated in aqueous suspension under solar light. The results showed that the deposition of Ag as a noble metal onto the ZnO surface, improved the photodegradation of AB25. . The effect of different parameters such as catalyst dose, initial dye concentration, and contact time was optimized and the optimal degradation of AB25 (97%) was achieved for initial AB25 concentration of 24 mg L−1 an catalyst dose of 1 g L−1 at natural pH (5.42) after 180 min. The kinetic studies were achieved and revealed that the photocatalytic degradation process obeyed to Langmuir–Hinshelwood model and followed a pseudo-first order rate expression. This work envisages the great potential that sunlight photocatalysis has in the degradation of dyes from wastewater <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acid%20dye" title="acid dye">acid dye</a>, <a href="https://publications.waset.org/abstracts/search?q=photocatalytic%20degradation" title=" photocatalytic degradation"> photocatalytic degradation</a>, <a href="https://publications.waset.org/abstracts/search?q=sunlight" title=" sunlight"> sunlight</a>, <a href="https://publications.waset.org/abstracts/search?q=zinc%20oxide" title=" zinc oxide"> zinc oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=noble%20metal" title=" noble metal"> noble metal</a>, <a href="https://publications.waset.org/abstracts/search?q=Langmuir%E2%80%93Hinshelwood%20model" title=" Langmuir–Hinshelwood model"> Langmuir–Hinshelwood model</a> </p> <a href="https://publications.waset.org/abstracts/157579/photocatalytic-degradation-of-acid-dye-over-ag-loaded-zno-under-uvsolar-light" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157579.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">112</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> Effects of Silver Nanoparticles on in vitro Adventitious Shoot Regeneration of Water Hyssop (Bacopa monnieri L. Wettst.)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Aasim">Muhammad Aasim</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehmet%20Karata%C5%9F"> Mehmet Karataş</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatih%20Erci"> Fatih Erci</a>, <a href="https://publications.waset.org/abstracts/search?q=%C5%9Eeyma%20Bak%C4%B1rc%C4%B1"> Şeyma Bakırcı</a>, <a href="https://publications.waset.org/abstracts/search?q=Ecenur%20Korkmaz"> Ecenur Korkmaz</a>, <a href="https://publications.waset.org/abstracts/search?q=Burak%20Kahveci"> Burak Kahveci</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Water hyssop (Bacopa monnieri L. Wettst.) is an important medicinal aquatic/semi aquatic plant native to India where it is used in traditional medicinal system. The plant contains bioactive compounds mainly Bacosides which are the main ingridient of commercial drug available as memory enhancer tonic. The local name of water hyssop is Brahmi and brahmi based drugs are available against for curing chronic diseases and disorders Alzheimer’s disease, anxiety, asthma, cancer, mental illness, respiratory ailments, and stomach ulcers. The plant is not a cultivated plant and collection of plant from nature make palnt threatened to endangered. On the other hand, low seed viability and availability make it difficult to propagate plant through traditional techniques. In recent years, plant tissue culture techniques have been employed to propagate plant for its conservation and production for continuous availability of secondary metabolites. On the other hand, application of nanoparticles has been reported for increasing biomass, in vitro regeneration and secondary metabolites production. In this study, silver nanoparticles (AgNPs) were applied at the rate of 2, 4, 6, 8 and 10 ppm to Murashihe and Skoog (MS) medium supplemented with 1.0 mg/l Benzylaminopurine (BAP), 3.0% sucrose and 0.7% agar. Leaf explants of water hyssop were cultured on AgNPs containing medium. Shoot induction from leaf explants were relatively slow compared to medium without AgNPs. Multiple shoot induction was recorded after 3-4 weeks of culture comapred to control that occured within 10 days. Regenerated shoots were rooted successfully on MS medium supplemented with 1.0 mg/l IBA and acclimatized in the aquariums for further studies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Water%20hyssop" title="Water hyssop">Water hyssop</a>, <a href="https://publications.waset.org/abstracts/search?q=Silver%20nanoparticles" title=" Silver nanoparticles"> Silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=In%20vitro" title=" In vitro"> In vitro</a>, <a href="https://publications.waset.org/abstracts/search?q=Regeneration" title=" Regeneration"> Regeneration</a>, <a href="https://publications.waset.org/abstracts/search?q=Secondary%20metabolites" title=" Secondary metabolites"> Secondary metabolites</a> </p> <a href="https://publications.waset.org/abstracts/93290/effects-of-silver-nanoparticles-on-in-vitro-adventitious-shoot-regeneration-of-water-hyssop-bacopa-monnieri-l-wettst" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/93290.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">196</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> A Technical-Economical Study of a New Solar Tray Distillator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abderrahmane%20Diaf">Abderrahmane Diaf</a>, <a href="https://publications.waset.org/abstracts/search?q=Assia%20Cherfa"> Assia Cherfa</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Karadaniz"> Lamia Karadaniz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Multiple tray solar distillation offers an interesting alternative for small-scale desalination and production high quality distilled water at a competitive cost using solar energy. In this work, we present indoor/outdoor trial performance data of our multiple tray solar distillation as well as the results of cost estimation analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solar%20desalination" title="solar desalination">solar desalination</a>, <a href="https://publications.waset.org/abstracts/search?q=tray%20distillation" title=" tray distillation"> tray distillation</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-%C3%A9tages%20solaire" title=" multi-étages solaire"> multi-étages solaire</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20distillation" title=" solar distillation"> solar distillation</a> </p> <a href="https://publications.waset.org/abstracts/19221/a-technical-economical-study-of-a-new-solar-tray-distillator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19221.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">425</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> Measurement of Intellectual Capital in an Algerian Company</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Brahmi">S. Brahmi</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Aitouche"> S. Aitouche</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20D.%20Mouss"> M. D. Mouss</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Every modern company should measure the value of its intellectual capital and to report to complement the traditional annual balance sheets. The purpose of this work is to measure the intellectual capital in an Algerian company (or production system) using the Weightless Wealth Tool Kit (WWTK). The results of the measurement of intellectual capital are supplemented by traditional financial ratios. The measurement was applied to the National Company of Wells Services (ENSP) in Hassi Messaoud city, in the south of Algeria. We calculated the intellectual capital (intangible resources) of the ENSP to help the organization to better capitalize on its potential of workers and their know-how. The intangible value of the ENSP is evaluated at 16,936,173,345 DA in 2015. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=financial%20valuation" title="financial valuation">financial valuation</a>, <a href="https://publications.waset.org/abstracts/search?q=intangible%20capital" title=" intangible capital"> intangible capital</a>, <a href="https://publications.waset.org/abstracts/search?q=intellectual%20capital" title=" intellectual capital"> intellectual capital</a>, <a href="https://publications.waset.org/abstracts/search?q=intellectual%20capital%20measurement" title=" intellectual capital measurement"> intellectual capital measurement</a> </p> <a href="https://publications.waset.org/abstracts/52333/measurement-of-intellectual-capital-in-an-algerian-company" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/52333.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">288</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">33</span> Fine-Tuned Transformers for Translating Multi-Dialect Texts to Modern Standard Arabic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tahar%20Alimi">Tahar Alimi</a>, <a href="https://publications.waset.org/abstracts/search?q=Rahma%20Boujebane"> Rahma Boujebane</a>, <a href="https://publications.waset.org/abstracts/search?q=Wiem%20Derouich"> Wiem Derouich</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Hadrich%20Belguith"> Lamia Hadrich Belguith</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Machine translation task of low-resourced languages such as Arabic is a challenging task. Despite the appearance of sophisticated models based on the latest deep learning techniques, namely the transfer learning and transformers, all models prove incapable of carrying out an acceptable translation, which includes Arabic Dialects (AD), because they do not have official status. In this paper, we present a machine translation model designed to translate Arabic multidialectal content into Modern Standard Arabic (MSA), leveraging both new and existing parallel resources. The latter achieved the best results for both Levantine and Maghrebi dialects with a BLEU score of 64.99. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arabic%20translation" title="Arabic translation">Arabic translation</a>, <a href="https://publications.waset.org/abstracts/search?q=dialect%20translation" title=" dialect translation"> dialect translation</a>, <a href="https://publications.waset.org/abstracts/search?q=fine-tune" title=" fine-tune"> fine-tune</a>, <a href="https://publications.waset.org/abstracts/search?q=MSA%20translation" title=" MSA translation"> MSA translation</a>, <a href="https://publications.waset.org/abstracts/search?q=transformer" title=" transformer"> transformer</a>, <a href="https://publications.waset.org/abstracts/search?q=translation" title=" translation"> translation</a> </p> <a href="https://publications.waset.org/abstracts/185321/fine-tuned-transformers-for-translating-multi-dialect-texts-to-modern-standard-arabic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185321.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">61</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">32</span> Smart Grids Cyber Security Issues and Challenges</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Imen%20Aouini">Imen Aouini</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Ben%20Azzouz"> Lamia Ben Azzouz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The energy need is growing rapidly due to the population growth and the large new usage of power. Several works put considerable efforts to make the electricity grid more intelligent to reduce essentially energy consumption and provide efficiency and reliability of power systems. The Smart Grid is a complex architecture that covers critical devices and systems vulnerable to significant attacks. Hence, security is a crucial factor for the success and the wide deployment of Smart Grids. In this paper, we present security issues of the Smart Grid architecture and we highlight open issues that will make the Smart Grid security a challenging research area in the future. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=smart%20grids" title="smart grids">smart grids</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20meters" title=" smart meters"> smart meters</a>, <a href="https://publications.waset.org/abstracts/search?q=home%20area%20network" title=" home area network"> home area network</a>, <a href="https://publications.waset.org/abstracts/search?q=neighbor%20area%20network" title=" neighbor area network"> neighbor area network</a> </p> <a href="https://publications.waset.org/abstracts/35303/smart-grids-cyber-security-issues-and-challenges" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35303.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">424</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">31</span> Officinal Quality Assurance: Investigation near the Pharmacists Dispensary at Oran- Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Boulenouar">S. Boulenouar</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Boukli%20Hacene"> A. Boukli Hacene</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Brahmi"> S. Brahmi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Quality is an old concept but which recently became omnipresent in the society. It is a pledge of the well done job and therefore the satisfaction of the customer. Now, dispensing pharmacies seem to be held away from this approach. Officinal staff is called to dispense drugs. However this essential function is rarely studied and taken into account. To contribute to the good use of medicines and to reduce the dangers, it is important to consider the dispensation of drugs practised in the pharmacies. It is a both descriptive and retrospective study .The descriptive part is to conduct a survey near to the dispensary pharmacists. The retrospective section concentrates on the analysis of medicine prescriptions dispensed to patients. Following the survey that we carried out near the pharmacists of dispensary of the town of Oran, it appears that in majority, they are not inclined, by themselves, to take up the challenge of quality at the dispensary. The approach requires time and a motivation that pharmacists do not have for the moment. Efforts are still needed on the part of pharmacists, but also of authorities and organizations in charge of quality in the dispensary. At the end of this work, it seems to us that the implementation of a quality approach is part of our reflection on the added value of the pharmacist of dispensary in the drug chain. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=customer%20satisfaction" title="customer satisfaction">customer satisfaction</a>, <a href="https://publications.waset.org/abstracts/search?q=dispensary" title=" dispensary"> dispensary</a>, <a href="https://publications.waset.org/abstracts/search?q=dispensing%20of%20the%20drug" title=" dispensing of the drug"> dispensing of the drug</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20approach" title=" quality approach"> quality approach</a> </p> <a href="https://publications.waset.org/abstracts/38508/officinal-quality-assurance-investigation-near-the-pharmacists-dispensary-at-oran-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38508.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">320</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">30</span> Combined Model Predictive Controller Technique for Enhancing NAO Gait Stabilization</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Brahim%20Brahmi">Brahim Brahmi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Hamza%20Laraki"> Mohammed Hamza Laraki</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Habibur%20Rahman"> Mohammad Habibur Rahman</a>, <a href="https://publications.waset.org/abstracts/search?q=Islam%20M.%20Rasedul"> Islam M. Rasedul</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Assad%20Uz-Zaman"> M. Assad Uz-Zaman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The humanoid robot, specifically the NAO robot must be able to provide a highly dynamic performance on the soccer field. Maintaining the balance of the humanoid robot during the required motion is considered as one of a challenging problems especially when the robot is subject to external disturbances, as contact with other robots. In this paper, a dynamic controller is proposed in order to ensure a robust walking (stabilization) and to improve the dynamic balance of the robot during its contact with the environment (external disturbances). The generation of the trajectory of the center of mass (CoM) is done by a model predictive controller (MPC) conjoined with zero moment point (ZMP) technique. Taking into account the properties of the rotational dynamics of the whole-body system, a modified previous control mixed with feedback control is employed to manage the angular momentum and the CoM’s acceleration, respectively. This latter is dedicated to provide a robust gait of the robot in the presence of the external disturbances. Simulation results are presented to show the feasibility of the proposed strategy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=preview%20control" title="preview control">preview control</a>, <a href="https://publications.waset.org/abstracts/search?q=Nao%20robot" title=" Nao robot"> Nao robot</a>, <a href="https://publications.waset.org/abstracts/search?q=model%20predictive%20control" title=" model predictive control "> model predictive control </a> </p> <a href="https://publications.waset.org/abstracts/108267/combined-model-predictive-controller-technique-for-enhancing-nao-gait-stabilization" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/108267.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">128</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">29</span> Genetic Improvement of Centella asiatica (Linn.) Urban. For Therapeutically Active Compounds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dalave%20S.%20C.">Dalave S. C.</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20G.%20Auti"> S. G. Auti</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20J.%20Apparao"> B. J. Apparao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Centella asiatica (L) Urban, commonly known as Brahmi and Mandookaparni is a valuable medicinal plant highly valued for its asiaticoside and madecassoside. It is widely used in Ayurveda and Unani systems of medicine. Attempts are made in the present investigation to improve the genotype of Centella plant that can yield higher amount of the therapeutically active compounds viz., asiaticosides and madecassosides, employing techniques of polyploidy breeding. Young developing shoots of Centella were treated with different concentrations of colchicine for varying time intervals. 0.4 % colchicine for 6 hours duration at room temperature was effective in inducing autopolyploidy in this plant. The colchicine treated plants were allowed to reproduce vegetatively for several generations in a polyhouse. The colchicine treated plants showed significant increase in plant size, fresh & dry weights, vigorous growth, broad leaves and double the number of chromosomes. HPTLC analysis of dried leaves of control and polyploid plants, even after 9th generations, revealed that the tetraploids synthesized at two times more asiaticoside and madecassoside, as compared to control, untreated diploid plants. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Centella%20asiatica" title="Centella asiatica">Centella asiatica</a>, <a href="https://publications.waset.org/abstracts/search?q=polyploidy" title=" polyploidy"> polyploidy</a>, <a href="https://publications.waset.org/abstracts/search?q=asiaticosides" title=" asiaticosides"> asiaticosides</a>, <a href="https://publications.waset.org/abstracts/search?q=madecassoside" title=" madecassoside"> madecassoside</a>, <a href="https://publications.waset.org/abstracts/search?q=HPTLC" title=" HPTLC"> HPTLC</a> </p> <a href="https://publications.waset.org/abstracts/31603/genetic-improvement-of-centella-asiatica-linn-urban-for-therapeutically-active-compounds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31603.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">245</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28</span> Identification of the Alkaloids of the Belladone (Atropa belladonna L.) and Evaluation of Their Inhibitory Effects Against Some Microbial Strains</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ait%20Slimane-Ait%20Kaki%20Sabrina">Ait Slimane-Ait Kaki Sabrina</a>, <a href="https://publications.waset.org/abstracts/search?q=Foudi%20Lamia"> Foudi Lamia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present work consists of the study of the bio-ecology and the therapeutic effects of the belladone (Atropa belladonna L.). It is a medicinal plant of the Solanacées family, herbaceous, robust 0.5 up to 1.50 m high. The phytochemical analysis of leaves revealed alkaloids, tannins, catechin, coumarins, mucilages, saponins, starch, and reducing compounds. The experimental study concerns the extraction and characterization of belladonna alkaloids. Analysis of the purified extract by staining tests confirmed the presence of tropane alkaloids. The dosage chromatography revealed the presence of components that have been identified atropine, scopolamine and hyoscyamine. Evaluation of antimicrobial and antifungal alkaloids from the methanol extract and aqueous extract of belladonna on pathogenic germs showed a positive bactericidal against strains of Escherichia coli and Staphylococcus aureus. Our preliminary results allow us an overall assessment of the medicinal value of Atropa belladonna. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=belladone" title="belladone">belladone</a>, <a href="https://publications.waset.org/abstracts/search?q=alkaloid" title=" alkaloid"> alkaloid</a>, <a href="https://publications.waset.org/abstracts/search?q=antibacterial%20activity" title=" antibacterial activity"> antibacterial activity</a>, <a href="https://publications.waset.org/abstracts/search?q=antifungal%20activity" title=" antifungal activity"> antifungal activity</a> </p> <a href="https://publications.waset.org/abstracts/25281/identification-of-the-alkaloids-of-the-belladone-atropa-belladonna-l-and-evaluation-of-their-inhibitory-effects-against-some-microbial-strains" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25281.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">495</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">27</span> Dental Management Particularities of Werner Syndrome: A Report of Two Cases</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Emna%20Abid">Emna Abid</a>, <a href="https://publications.waset.org/abstracts/search?q=Linda%20Chebbi"> Linda Chebbi</a>, <a href="https://publications.waset.org/abstracts/search?q=Yosra%20Mabrouk"> Yosra Mabrouk</a>, <a href="https://publications.waset.org/abstracts/search?q=Amel%20Labidi"> Amel Labidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Mansour"> Lamia Mansour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Werner syndrome (WS) is a rare genetic disorder inherited in an autosomal recessive pattern characterized by accelerated aging. While extensive research has been conducted on its systemic manifestations, the specific dental implications of WS remain poorly understood. The medical history and the oral health status of two patients diagnosed with WS were detailed. Our findings revealed a high prevalence of dental problems in both patients, including periodontitis, xerostomia, and temporomandibular joint disorders. This article aims to investigate the dental challenges faced by individuals with WS as well as the prosthetic options envisaged through two clinical cases contributing to a deeper understanding of the dental implications of WS and to choose the appropriate prosthetic solution in this population. Future research should focus on larger scale studies and clinical trials to validate these proposed strategies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adult%20progeria" title="adult progeria">adult progeria</a>, <a href="https://publications.waset.org/abstracts/search?q=clinical%20symptoms" title=" clinical symptoms"> clinical symptoms</a>, <a href="https://publications.waset.org/abstracts/search?q=oral%20manifestations" title=" oral manifestations"> oral manifestations</a>, <a href="https://publications.waset.org/abstracts/search?q=dental%20care" title=" dental care"> dental care</a>, <a href="https://publications.waset.org/abstracts/search?q=prosthetic%20management" title=" prosthetic management"> prosthetic management</a> </p> <a href="https://publications.waset.org/abstracts/186691/dental-management-particularities-of-werner-syndrome-a-report-of-two-cases" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186691.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">51</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">26</span> Coordination Polymer Hydrogels Based on Coinage Metals and Nucleobase Derivatives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lamia%20L.%20G.%20Al-Mahamad">Lamia L. G. Al-Mahamad</a>, <a href="https://publications.waset.org/abstracts/search?q=Benjamin%20R.%20Horrocks"> Benjamin R. Horrocks</a>, <a href="https://publications.waset.org/abstracts/search?q=Andrew%20Houlton"> Andrew Houlton</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hydrogels based on metal coordination polymers of nucleosides and a range of metal ions (Au, Ag, Cu) have been prepared and characterized by atomic force microscopy (AFM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, ultraviolet-visible absorption spectroscopy, and powder X-ray diffraction. AFM images of the xerogels revealed the formation of extremely long polymer molecules (> 10 micrometers, the maximum scan range). This result is also consistent with TEM images which show a fibrous morphology. Oxidative doping of the Au-nucleoside fibres produces an electrically conductive nanowire. No sharp Bragg peaks were found at the at the X-ray diffraction pattern for metal ions hydrogels indicating that the samples were amorphous, but instead the data showed broad peaks in the range 20 < Q < 40 and correspond to distances d=2μ/Q. The data was analysed using a simplified Rietveld method by fitting a regression model to obtain the distance between atoms. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hydrogel" title="hydrogel">hydrogel</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20ions" title=" metal ions"> metal ions</a>, <a href="https://publications.waset.org/abstracts/search?q=nanowire" title=" nanowire"> nanowire</a>, <a href="https://publications.waset.org/abstracts/search?q=nucleoside" title=" nucleoside"> nucleoside</a> </p> <a href="https://publications.waset.org/abstracts/63323/coordination-polymer-hydrogels-based-on-coinage-metals-and-nucleobase-derivatives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63323.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">265</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">25</span> Ultrasonic Extraction of Phenolics from Leaves of Shallots and Peels of Potatoes for Biofortification of Cheese</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lila%20Boulekbache-Makhlouf">Lila Boulekbache-Makhlouf</a>, <a href="https://publications.waset.org/abstracts/search?q=Brahmi%20Fatiha"> Brahmi Fatiha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study was carried out with the aim of enriching fresh cheese with the food by-products, which are the leaves of shallots and the peels of potatoes. Firstly, the conditions for extracting the total polyphenols (TPP) using ultrasound are optimized. Then, the contents of PPT, flavonoids, and antioxidant activity were evaluated for the extracts obtained by adopting the optimal parameter. On the other hand, we have carried out some physico-chemical, microbiological, and sensory analyzes of the cheese produced. The maximum PPT value of 70.44 mg GAE/g DM of shallot leaves was reached with 40% (v/v) ethanol, an extraction time of 90 min, and a temperature of 10°C. Meanwhile, the maximum TPP content of potato peels of 45.03 ± 4.16 mg GAE/g DM was obtained using an ethanol/water mixture (40%, v/v), a time of 30 min, and a temperature of 60°C and the flavonoid contents were 13.99 and 7.52 QE/g DM, respectively. From the antioxidant tests, we deduced that the potato peels present a higher antioxidant power with IC50s of 125.42 ± 2.78 μg/mL for DPPH, of 87.21 ± 7.72 μg/mL for phosphomolybdate and 200.77 ± 13.38 μg/mL for iron chelation, compared with the results obtained for shallot leaves which were 204.29 ± 0.09, 45.85 ± 3,46 and 1004.10 ± 145.73 μg/mL, respectively. The results of the physico-chemical analyzes have shown that the formulated cheese was compliant with standards. Microbiological analyzes show that the hygienic quality of the cheese produced was satisfactory. According to the sensory analyzes, the experts liked the cheese enriched with the powder and pieces of the leaves of the shallots. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=shallots%20leaves" title="shallots leaves">shallots leaves</a>, <a href="https://publications.waset.org/abstracts/search?q=potato%20peels" title=" potato peels"> potato peels</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasound%20extraction" title=" ultrasound extraction"> ultrasound extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=phenolic" title=" phenolic"> phenolic</a>, <a href="https://publications.waset.org/abstracts/search?q=cheese" title=" cheese"> cheese</a> </p> <a href="https://publications.waset.org/abstracts/173522/ultrasonic-extraction-of-phenolics-from-leaves-of-shallots-and-peels-of-potatoes-for-biofortification-of-cheese" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/173522.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">184</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">24</span> Nasopharyngeal Cancer in Children and Adolescents: Experience of Emir Abdelkader Cancer Center of Oran Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Taleb%20L.">Taleb L.</a>, <a href="https://publications.waset.org/abstracts/search?q=Benarbia%20M."> Benarbia M.</a>, <a href="https://publications.waset.org/abstracts/search?q=Brahmi%20M."> Brahmi M.</a>, <a href="https://publications.waset.org/abstracts/search?q=Belmiloud%20H."> Belmiloud H.</a>, <a href="https://publications.waset.org/abstracts/search?q=Boukerche%20A."> Boukerche A.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction and purpose of the study: Cavum cancer in children and adolescents is rare and represents 8% of all nasopharyngeal cancers treated in our department. Our objective is to study its epidemiological, clinical, therapeutic, and evolutionary particularities. Material and methods: Retrospective study of 39 patients under 20 years old, treated for undifferentiated non-metastatic carcinoma of the nasopharynx at the Emir Abdelkader Cancer Center between 2014 and 2020. Results and statistical analysis: Median age was 14 years [7-19 years], with a sex ratio of 2.9. The median time to diagnosis was 5.6 months [1 to 14 months], the circumstances of the discovery of which were dominated by lymph node syndrome in 43.6% of cases (n=17) followed by a rhinological syndrome in 30.8% of cases (n=13). The tumor stage was T1 for two patients (5.1%), T2 for 8 (20.5%), T3 for 9 (23.1%), T4 for 20 (51.3%), N0 for 2 (5 .1%) N1 for 4 (10.3%), N2 for 28 (71.8%) and N3 for 5 (12.8%). All patients received induction chemotherapy followed by concomitant radiotherapy with cisplatin. The dose of irradiation delivered to the cavum and adenopathies was 66 Gy with fractionation of 2 Gy per session in 69.2% of cases (n=27) and 1.8 Gy in 30.8% of cases (n=12). With a median follow-up of 51 months (15 to 97 months), the locoregional, metastatic, specific, and overall relapse-free survival rates at five years were 91.1%, 73.5%, 66.1%, and 68.4, respectively. Conclusion: Chemotherapy and radiotherapy treatment of cavum cancer in children and adolescents has allowed excellent locoregional control despite the advanced stage of the disease. However, the frequency of metastatic relapses could justify the possible use of systemic maintenance treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cancer" title="cancer">cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=nasopharynx" title=" nasopharynx"> nasopharynx</a>, <a href="https://publications.waset.org/abstracts/search?q=radiotherapy" title=" radiotherapy"> radiotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=chemotherapy" title=" chemotherapy"> chemotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=survival" title=" survival"> survival</a> </p> <a href="https://publications.waset.org/abstracts/158304/nasopharyngeal-cancer-in-children-and-adolescents-experience-of-emir-abdelkader-cancer-center-of-oran-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158304.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">111</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">23</span> Knowledge Spillovers from Patent Citations: Evidence from Swiss Manufacturing Industry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Racha%20Khairallah">Racha Khairallah</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Ben%20Hamida"> Lamia Ben Hamida</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Our paper attempts to examine how Swiss manufacturing firms manage to learn from patent citations to improve their innovation performance. We argue that the assessment of these effects needs a detailed analysis of spillovers according to the source of knowledge with respect to formal and informal patent citations made in European and internal search, the horizontal and vertical mechanisms by which knowledge spillovers take place, and the technological characteristics of innovative firms that able them to absorb external knowledge and integrate it in their existing innovation process. We use OECD data and find evidence that knowledge spillovers occur only from horizontal and backward linkages. The importance of these effects depends on the type of citation, in which the references to non-patent literature (informal citations made in European and international searches) have a greater impact. In addition, only firms with high technological capacities benefit from knowledge spillovers from formal and informal citations. Low-technology firms fail to catch up and efficiently learn external knowledge from patent citations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=innovation%20performance" title="innovation performance">innovation performance</a>, <a href="https://publications.waset.org/abstracts/search?q=patent%20citation" title=" patent citation"> patent citation</a>, <a href="https://publications.waset.org/abstracts/search?q=absorptive%20capacity" title=" absorptive capacity"> absorptive capacity</a>, <a href="https://publications.waset.org/abstracts/search?q=knowledge%20spillover%20mechanisms" title=" knowledge spillover mechanisms"> knowledge spillover mechanisms</a> </p> <a href="https://publications.waset.org/abstracts/162143/knowledge-spillovers-from-patent-citations-evidence-from-swiss-manufacturing-industry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/162143.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">111</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">22</span> Iterative Estimator-Based Nonlinear Backstepping Control of a Robotic Exoskeleton</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Brahmi%20Brahim">Brahmi Brahim</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Habibur%20Rahman"> Mohammad Habibur Rahman</a>, <a href="https://publications.waset.org/abstracts/search?q=Maarouf%20Saad"> Maarouf Saad</a>, <a href="https://publications.waset.org/abstracts/search?q=Crist%C3%B3bal%20Ochoa%20Luna"> Cristóbal Ochoa Luna</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A repetitive training movement is an efficient method to improve the ability and movement performance of stroke survivors and help them to recover their lost motor function and acquire new skills. The ETS-MARSE is seven degrees of freedom (DOF) exoskeleton robot developed to be worn on the lateral side of the right upper-extremity to assist and rehabilitate the patients with upper-extremity dysfunction resulting from stroke. Practically, rehabilitation activities are repetitive tasks, which make the assistive/robotic systems to suffer from repetitive/periodic uncertainties and external perturbations induced by the high-order dynamic model (seven DOF) and interaction with human muscle which impact on the tracking performance and even on the stability of the exoskeleton. To ensure the robustness and the stability of the robot, a new nonlinear backstepping control was implemented with designed tests performed by healthy subjects. In order to limit and to reject the periodic/repetitive disturbances, an iterative estimator was integrated into the control of the system. The estimator does not need the precise dynamic model of the exoskeleton. Experimental results confirm the robustness and accuracy of the controller performance to deal with the external perturbation, and the effectiveness of the iterative estimator to reject the repetitive/periodic disturbances. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=backstepping%20control" title="backstepping control">backstepping control</a>, <a href="https://publications.waset.org/abstracts/search?q=iterative%20control" title=" iterative control"> iterative control</a>, <a href="https://publications.waset.org/abstracts/search?q=Rehabilitation" title=" Rehabilitation"> Rehabilitation</a>, <a href="https://publications.waset.org/abstracts/search?q=ETS-MARSE" title=" ETS-MARSE"> ETS-MARSE</a> </p> <a href="https://publications.waset.org/abstracts/50768/iterative-estimator-based-nonlinear-backstepping-control-of-a-robotic-exoskeleton" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50768.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">286</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">21</span> Risk Management and Security Practice in Customs Supply Chain: Application of Cross ABC Method to the Moroccan Customs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Hammadi">Lamia Hammadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Ait%20Ouhman"> Abdellah Ait Ouhman</a>, <a href="https://publications.waset.org/abstracts/search?q=Aomar%20Ibourk"> Aomar Ibourk</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is widely assumed that the case of Customs Supply Chain is classified as a complex system, due to not only the variety and large number of actors, but also their complex structural links, and the interactions between these actors, that’s why this system is subject to various types of Risks. The economic, political and social impacts of those risks are highly detrimental to countries, businesses and the public, for this reason, Risk management in the customs supply chain is becoming a crucial issue to ensure the sustainability, security and safety. The main characteristic of customs risk management approach is determining which goods and means of transport should be examined? To what extend? And where future compliance resources should be directed? The purposes of this article are, firstly to deal with the concept of customs supply chain, secondly present our risk management approach based on Cross Activity Based Costing (ABC) Method as an interactive tool to support decision making in customs risk management. Finally, analysis of case study of Moroccan customs to putting theory into practice and will thus draw together the various elements of a structured and efficient risk management approach. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cross%20ABC%20method" title="cross ABC method">cross ABC method</a>, <a href="https://publications.waset.org/abstracts/search?q=customs%20supply%20chain" title=" customs supply chain"> customs supply chain</a>, <a href="https://publications.waset.org/abstracts/search?q=risk" title=" risk"> risk</a>, <a href="https://publications.waset.org/abstracts/search?q=risk%20management" title=" risk management"> risk management</a> </p> <a href="https://publications.waset.org/abstracts/8638/risk-management-and-security-practice-in-customs-supply-chain-application-of-cross-abc-method-to-the-moroccan-customs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8638.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">379</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">20</span> Volatility and Stylized Facts</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kalai%20Lamia">Kalai Lamia</a>, <a href="https://publications.waset.org/abstracts/search?q=Jilani%20Faouzi"> Jilani Faouzi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Measuring and controlling risk is one of the most attractive issues in finance. With the persistence of uncontrolled and erratic stocks movements, volatility is perceived as a barometer of daily fluctuations. An objective measure of this variable seems then needed to control risks and cover those that are considered the most important. Non-linear autoregressive modeling is our first evaluation approach. In particular, we test the presence of “persistence” of conditional variance and the presence of a degree of a leverage effect. In order to resolve for the problem of “asymmetry” in volatility, the retained specifications point to the importance of stocks reactions in response to news. Effects of shocks on volatility highlight also the need to study the “long term” behaviour of conditional variance of stocks returns and articulate the presence of long memory and dependence of time series in the long run. We note that the integrated fractional autoregressive model allows for representing time series that show long-term conditional variance thanks to fractional integration parameters. In order to stop at the dynamics that manage time series, a comparative study of the results of the different models will allow for better understanding volatility structure over the Tunisia stock market, with the aim of accurately predicting fluctuation risks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=asymmetry%20volatility" title="asymmetry volatility">asymmetry volatility</a>, <a href="https://publications.waset.org/abstracts/search?q=clustering" title=" clustering"> clustering</a>, <a href="https://publications.waset.org/abstracts/search?q=stylised%20facts" title=" stylised facts"> stylised facts</a>, <a href="https://publications.waset.org/abstracts/search?q=leverage%20effect" title=" leverage effect"> leverage effect</a> </p> <a href="https://publications.waset.org/abstracts/30403/volatility-and-stylized-facts" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30403.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">299</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">19</span> Dynamic Software Product Lines for Customer Centric Context Aware Business Process Management</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bochra%20Khiari">Bochra Khiari</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Labed"> Lamia Labed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the new digital marketplace, organizations are striving for a proactive position by leveraging the great potential of disruptive technologies to seize the full opportunity of the digital revolution in order to reshape their customer value propositions. New technologies such as big data analytics, which provide prediction of future events based on real-time information, are being integrated into BPM which urges the need for additional core values like capabilities for dynamic adaptation, autonomic behavior, runtime reconfiguration and post-deployment activities to manage unforeseen scenarios at runtime in a situated and changeable context. Dynamic Software Product Lines (DSPL) is an emerging paradigm that supports these runtime variability mechanisms. However, few works exploiting DSPLs principles and techniques in the BPM domain have been proposed so far. In this paper, we propose a conceptual approach DynPL4CBPM, which integrates DSPLs concepts along with the entire related dynamic properties, to the whole BPM lifecycle in order to dynamically adapt business processes according to different context conditions in an individual environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adaptive%20processes" title="adaptive processes">adaptive processes</a>, <a href="https://publications.waset.org/abstracts/search?q=context%20aware%20business%20process%20management" title=" context aware business process management"> context aware business process management</a>, <a href="https://publications.waset.org/abstracts/search?q=customer%20centric%20business%20process%20management" title=" customer centric business process management"> customer centric business process management</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20software%20product%20lines" title=" dynamic software product lines"> dynamic software product lines</a> </p> <a href="https://publications.waset.org/abstracts/81537/dynamic-software-product-lines-for-customer-centric-context-aware-business-process-management" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/81537.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">161</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18</span> Renoprotective Effect of Alcoholic Extract of Bacopa monnieri via Inhibition of Advanced Glycation End Products and Oxidative Stress in Stz-Nicotinamide Induced Diabetic Nephropathy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lalit%20Kishore">Lalit Kishore</a>, <a href="https://publications.waset.org/abstracts/search?q=Randhir%20Singh"> Randhir Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Diabetic nephropathy (DN) is the major cause of morbidity among diabetic patients. In this study, the effect of Bacopa monnieri Linn. (Brahmi, BM), was studied in a Streptozotocin (STZ)-induced experimental rat model of DN. Diabetic nephropathy was induced in Male Wistar rats (body weight- 300± 10 gms) by single intra-peritoneal injection of STZ (45mg/kg, i.p.) after 15 min of Nicotinamide (230 mg/kg) administration. Different doses of alcoholic extract i.e. 100, 200 and 400 mg/kg was given for 45 days by oral gavage after induction of DN. Blood glucose level, serum insulin, glycosylated haemoglobin, renal parameters (serum urea, uric acid, creatinine and BUN) and lipid profile (total cholesterol, triglycerides, HDL, LDL and VLDL levels) were measured. Concentration of thiobarbituric acid reactive species (TBARS) and levels of antioxidant enzymes of reduced glutathione (GSH), superoxide dismutase (SOD), and catalase (CAT) were evaluated in the kidney, liver and pancreas. At the end of treatment period the alcoholic extract of BM reduced the elevated level of blood glucose, serum insulin, renal parameters, lipid levels, TBARS, AGE’s in kidney and significantly increased body weight, HDL and antioxidant enzymes in dose dependent manner as compared to diabetic control animals. These results suggested the BM possesses significant renoprotective activity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AGE%27s" title="AGE's">AGE's</a>, <a href="https://publications.waset.org/abstracts/search?q=lipid%20profile" title=" lipid profile"> lipid profile</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidative%20stress" title=" oxidative stress"> oxidative stress</a>, <a href="https://publications.waset.org/abstracts/search?q=renal%20parameters" title=" renal parameters"> renal parameters</a> </p> <a href="https://publications.waset.org/abstracts/43175/renoprotective-effect-of-alcoholic-extract-of-bacopa-monnieri-via-inhibition-of-advanced-glycation-end-products-and-oxidative-stress-in-stz-nicotinamide-induced-diabetic-nephropathy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43175.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">323</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17</span> Design and Implementation of an Efficient Solar-Powered Pumping System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mennatallah%20M.%20Fouad">Mennatallah M. Fouad</a>, <a href="https://publications.waset.org/abstracts/search?q=Omar%20Hussein"> Omar Hussein</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20A.%20Shihata"> Lamia A. Shihata</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main problem in many rural areas is the absence of electricity and limited access to water. The novelty of this work lies in implementing a small-scale experimental setup for a solar-powered water pumping system with a battery back-up system. Cooling and cleaning of the PV panel are implemented to enhance its overall efficiency and output. Moreover, a simulation for a large scale solar-powered pumping system is performed using PVSyst software. Results of the experimental setup show that the PV system with a battery backup proved to be a feasible and viable system to operate the water pumping system. Excess water from the pumping system is used to cool and clean the PV panel and achieved an average percentage increase in the PV output by 21.8%. Simulation results have shown that the system provides adequate output to power the solar-powered system and saves 0.3 tons of CO₂ compared to conventional fossil fuels. It is recommended for hot countries to adopt this system, which would help in decreasing the dependence on the depleting fossil fuels, provide access to electricity to areas where there is no electricity supply and also provide a source of water for crop growth as well as decrease the carbon emissions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=efficient%20solar%20pumping" title="efficient solar pumping">efficient solar pumping</a>, <a href="https://publications.waset.org/abstracts/search?q=PV%20cleaning" title=" PV cleaning"> PV cleaning</a>, <a href="https://publications.waset.org/abstracts/search?q=PV%20cooling" title=" PV cooling"> PV cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=PV-operated%20water%20pump" title=" PV-operated water pump"> PV-operated water pump</a> </p> <a href="https://publications.waset.org/abstracts/117406/design-and-implementation-of-an-efficient-solar-powered-pumping-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/117406.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">135</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">16</span> Ultrasonic Extraction of Phenolics from Leaves of Shallots and Peels of Potatoes for Biofortification of Cheese</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lila%20Boulekbache-Makhlouf">Lila Boulekbache-Makhlouf</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatiha%20Brahmi"> Fatiha Brahmi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study was carried out with the aim of enriching fresh cheese with the food by-products, which are the leaves of shallots and the peels of potatoes. Firstly, the conditions for extracting the total polyphenols using ultrasound are optimized. Then, the contents of total polyphenols PPT , flavonoids and antioxidant activity were evaluated for the extracts obtained by adopting the optimal parameter. On the other hand, we have carried out some physicochemical, microbiological and sensory analyzes of the cheese produced. The maximum total polyphenols value of 70.44 mg GAE gallic acid equivalent / g of dry matter DM of shallot leaves was reached with 40% (v/v) ethanol, an extraction time of 90 min and a temperature of 10 °C. While, the maximum TPP total polyphenols content of potato peels of 45.03 ± 4.16 mg gallic acid equivalent / g of dry matter DM was obtained using an ethanol /water mixture (40%, v/v), a time of 30 min and a temperature of 60 °C and the flavonoid contents were 13.99 and 7.52 QE quercetin equivalent/g dry matter DM, respectively. From the antioxidant tests, we deduced that the potato peels present a higher antioxidant power with the concentration of extracts causing a 50% inhibition IC50s of 125.42 ± 2.78 μg/mL for 2,2-diphényl 1-picrylhydrazyle DPPH, of 87.21 ± 7.72 μg/mL for phosphomolybdate and 200.77 ± 13.38 μg/mL for iron chelation, compared with the results obtained for shallot leaves which were 204.29 ± 0.09, 45.85 ± 3,46 and 1004.10 ± 145.73 μg/mL, respectively. The results of the physicochemical analyzes have shown that the formulated cheese was compliant with standards. Microbiological analyzes show that the hygienic quality of the cheese produced was satisfactory. According to the sensory analysis, the experts liked the cheese enriched with the powder and pieces of the leaves of the shallots. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=shallots%20leaves" title="shallots leaves">shallots leaves</a>, <a href="https://publications.waset.org/abstracts/search?q=potato%20peels" title=" potato peels"> potato peels</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasound%20extraction" title=" ultrasound extraction"> ultrasound extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=phenolics" title=" phenolics"> phenolics</a>, <a href="https://publications.waset.org/abstracts/search?q=cheese" title=" cheese"> cheese</a> </p> <a href="https://publications.waset.org/abstracts/160098/ultrasonic-extraction-of-phenolics-from-leaves-of-shallots-and-peels-of-potatoes-for-biofortification-of-cheese" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/160098.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">92</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15</span> Purification of Bilge Water by Adsorption</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatiha%20Atmani">Fatiha Atmani</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Djellab"> Lamia Djellab</a>, <a href="https://publications.waset.org/abstracts/search?q=Nacera%20Yeddou%20Mezenner"> Nacera Yeddou Mezenner</a>, <a href="https://publications.waset.org/abstracts/search?q=Zohra%20Bensaadi"> Zohra Bensaadi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Generally, bilge waters can be briefly defined as saline and greasy wastewaters. The oil and grease are mixed with the sea water, which affects many marine species. Bilge water is a complex mixture of various compounds such as solvents, surfactants, fuel, lubricating oils, and hydraulic oils. It is resulted mainly by the leakage from the machinery and fresh water washdowns,which are allowed to drain to the lowest inner part of the ship's hull. There are several physicochemical methods used for bilge water treatment such as biodegradation electrochemical and electro-coagulation/flotation.The research herein presented discusses adsorption as a method to treat bilge water and eggshells were studied as an adsorbent. The influence of operating parameters as contact time, temperature and adsorbent dose (0,2 - 2g/l) on the removal efficiency of Chemical oxygen demand, COD, and turbidity was analyzed. The bilge wastewater used for this study was supplied by Harbour Bouharoune. Chemical oxygen demand removal increased from 26.7% to 68.7% as the adsorbent dose increased from 0.2 to 2 g. The kinetics of adsorption by eggshells were fast, reaching 55 % of the total adsorption capacity in ten minutes (T= 20°C, pH =7.66, m=2g/L). It was found that the turbidity removal efficiency decreased and 95% were achieved at the end of 90 min reaction. The adsorption process was found to be effective for the purification of bilge water and pseudo-second-order kinetic model was fitted for COD removal. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adsorption" title="adsorption">adsorption</a>, <a href="https://publications.waset.org/abstracts/search?q=bilge%20water" title=" bilge water"> bilge water</a>, <a href="https://publications.waset.org/abstracts/search?q=eggshells%20and%20kinetics" title=" eggshells and kinetics"> eggshells and kinetics</a>, <a href="https://publications.waset.org/abstracts/search?q=equilibrium%20and%20kinetics" title=" equilibrium and kinetics "> equilibrium and kinetics </a> </p> <a href="https://publications.waset.org/abstracts/32584/purification-of-bilge-water-by-adsorption" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32584.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">355</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">14</span> Endometrioma Ethanol Sclerotherapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Bensissaid">Lamia Bensissaid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Goals: Endometriosis affects 6 to 10% of women of childbearing age. 17 to 44% of them have ovarian endometriomas. Medical and surgical treatments represent the two therapeutic axes with which PMA can be associated. Laparoscopic intraperitoneal ovarian cystectomy is described as the reference technique in the management of endometriomas by learned societies (CNGOF, ESHRE, NICE). However, it leads to a significant short-term reduction in the AMH level and the number of antral follicles, especially in cases of bilateral cystectomy, large cyst size or cystectomy after recurrence. Often, the disease is at an advanced stage with several surgical patients. Most have adhesions, which increase the risk of surgical complications and suboptimal resection and, therefore recurrence of the cyst. These results led to a change of opinion towards a conservative approach. Sclerotherapy is an old technique which acts by fibrinoid necrosis. It consists of injecting a sclerosing agent into the cyst cavity. Results : Recurrence was less than 15% for a 12-month follow-up; these rates are comparable to those of surgery. It does not seem to have a negative impact on ovarian reserve, but this is not sufficiently evaluated. It has an advantage in IVF pregnancy rates compared to cystectomy, particularly in cases of recurrent endometriomas. It has the advantages: · To be done on an outpatient basis. · To be inexpensive. · To avoid sometimes difficult and iterative surgery: · To allow an increase in pregnancy rates and the preservation of the ovarian reserve compared to iterative surgery. · of great interest in cases of bilateral endometriomas (kissing ovaries) or recurrent endometriomas. Conclusions: Ethanol sclerotherapy could be a good alternative to surgery. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Endometrioma" title="Endometrioma">Endometrioma</a>, <a href="https://publications.waset.org/abstracts/search?q=Sclerotherapy" title=" Sclerotherapy"> Sclerotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=infertility" title=" infertility"> infertility</a>, <a href="https://publications.waset.org/abstracts/search?q=Ethanol" title=" Ethanol"> Ethanol</a> </p> <a href="https://publications.waset.org/abstracts/176251/endometrioma-ethanol-sclerotherapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/176251.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">64</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">13</span> Effect of Different Parameters on the Swelling Behaviour of Thermo-Responsive Elastomers in a Nematogenic Solvent</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nouria%20Bouchikhi">Nouria Bouchikhi</a>, <a href="https://publications.waset.org/abstracts/search?q=Soufiane%20Bedjaoui"> Soufiane Bedjaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Tewfik%20Bouchaour"> C. Tewfik Bouchaour</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Alachaher%20Bedjaoui"> Lamia Alachaher Bedjaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Ulrich%20Maschke"> Ulrich Maschke</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Swelling properties and phase diagrams of binary systems composed of liquid crystalline networks and a low molecular mass liquid crystal (LMWLC) have been investigated. The networks were prepared by ultraviolet (UV) irradiation of reactive mixtures including a monomer, a cross-linking agent and a photo-initiator. These networks were prepared using two cross-linking agents: 1,6 hexanedioldiacrylate (HDDA) and a mesogenic acrylic acid 6-(4’-(6-acryloyloxy-hexyloxy) biphenyl-4-yl oxy) hexyl ester (AHBH). The obtained dry networks were characterized by differential scanning calorimetry, and immersed in an excess of a LMWLC solvent 4-cyano-4’-pentylbiphenyl (5CB), forming polymer gels. A detailed study by polarized optical microscopy allowed to determine the swelling degree of the gels and to follow the phase behavior of the solvent inside the polymer matrix in a wide range of temperature. It has been found that the gels undergo a sharp decrease of their swelling degree in response to an infinitesimal change of temperature. This finding adds new and interesting aspects on the actuators applications. We have subsequently explored the effect of different parameters on volume phase transition of these liquid crystalline materials. Such as the cross-linking density (CD), a nature of cross-linking agent and the photo initiator concentration. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cross-linking%20density" title="cross-linking density">cross-linking density</a>, <a href="https://publications.waset.org/abstracts/search?q=liquid%20crystalline%20elastomers" title=" liquid crystalline elastomers"> liquid crystalline elastomers</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20diagrams" title=" phase diagrams"> phase diagrams</a>, <a href="https://publications.waset.org/abstracts/search?q=swelling" title=" swelling"> swelling</a> </p> <a href="https://publications.waset.org/abstracts/29741/effect-of-different-parameters-on-the-swelling-behaviour-of-thermo-responsive-elastomers-in-a-nematogenic-solvent" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29741.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">332</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">12</span> Non Linear Stability of Non Newtonian Thin Liquid Film Flowing down an Incline</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Bourdache">Lamia Bourdache</a>, <a href="https://publications.waset.org/abstracts/search?q=Amar%20Djema"> Amar Djema</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of non-Newtonian property (power law index n) on traveling waves of thin layer of power law fluid flowing over an inclined plane is investigated. For this, a simplified second-order two-equation model (SM) is used. The complete model is second-order four-equation (CM). It is derived by combining the weighted residual integral method and the lubrication theory. This is due to the fact that at the beginning of the instability waves, a very small number of waves is observed. Using a suitable set of test functions, second order terms are eliminated from the calculus so that the model is still accurate to the second order approximation. Linear, spatial, and temporal stabilities are studied. For travelling waves, a particular type of wave form that is steady in a moving frame, i.e., that travels at a constant celerity without changing its shape is studied. This type of solutions which are characterized by their celerity exists under suitable conditions, when the widening due to dispersion is balanced exactly by the narrowing effect due to the nonlinearity. Changing the parameter of celerity in some range allows exploring the entire spectrum of asymptotic behavior of these traveling waves. The (SM) model is converted into a three dimensional dynamical system. The result is that the model exhibits bifurcation scenarios such as heteroclinic, homoclinic, Hopf, and period-doubling bifurcations for different values of the power law index n. The influence of the non-Newtonian parameter on the nonlinear development of these travelling waves is discussed. It is found at the end that the qualitative characters of bifurcation scenarios are insensitive to the variation of the power law index. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=inclined%20plane" title="inclined plane">inclined plane</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20stability" title=" nonlinear stability"> nonlinear stability</a>, <a href="https://publications.waset.org/abstracts/search?q=non-Newtonian" title=" non-Newtonian"> non-Newtonian</a>, <a href="https://publications.waset.org/abstracts/search?q=thin%20film" title=" thin film"> thin film</a> </p> <a href="https://publications.waset.org/abstracts/42347/non-linear-stability-of-non-newtonian-thin-liquid-film-flowing-down-an-incline" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42347.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">283</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11</span> The Effect of the Covid-19 Pandemic on Food Habits and Knowledge of Nutritional Requirements: A College Students Perspective</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Ismayil">Lamia Ismayil</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The COVID-19 pandemic has drastically changed the everyday lives of people all over the world. This pandemic affects heavily the lifestyle of people in different aspects of life, including eating habits. The objective of this paper is to study the impact of the COVID-19 pandemic on key factors affecting food habits among the Community College of Qatar (CCQ) students. Method: The research is a cross-sectional survey that deployed a questionnaire among 217 CCQ students. Results: The results showed that 47.5% of the respondents were male and 52.5% female. In our previous study about 30% percentage obesity with a BMI of 30-35 was shown. Surprisingly, during the pandemic, the obesity percentage remains almost the same, but the BMI range jumped to 30-46. The nutritional knowledge of CCQ students is at an average level. Besides, during pandemic the personal eating habits continued to be imbalanced and getting unhealthier than in the pre-pandemic period. Regarding the key factors that could affect eating habits, most of the respondents reported that during the pandemic in the absence of restaurants they had daily meals with their families, and had a lack of physical activity. Besides, most of the respondents agree that they gained weight during the pandemic. These findings indicate that the pandemic changed the food habits and the lifestyle of Qatari students. Accordingly, increasing the awareness among college students (and Qatari community at large) is recommended. College students can be given some recommendations related to healthy eating tips to overcome the effect of pandemic on their health status. The detailed comparative analysis between pre- and post-pandemic eating habits of students can help reveal the main differences and give effective guidance to improve body composition and health status of students. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=food%20habits" title="food habits">food habits</a>, <a href="https://publications.waset.org/abstracts/search?q=BMI" title=" BMI"> BMI</a>, <a href="https://publications.waset.org/abstracts/search?q=obesity" title=" obesity"> obesity</a>, <a href="https://publications.waset.org/abstracts/search?q=COVID-19" title=" COVID-19"> COVID-19</a>, <a href="https://publications.waset.org/abstracts/search?q=nutritional%20knowledge" title=" nutritional knowledge"> nutritional knowledge</a>, <a href="https://publications.waset.org/abstracts/search?q=community%20college%20of%20Qatar" title=" community college of Qatar"> community college of Qatar</a>, <a href="https://publications.waset.org/abstracts/search?q=pandemic" title=" pandemic"> pandemic</a> </p> <a href="https://publications.waset.org/abstracts/181211/the-effect-of-the-covid-19-pandemic-on-food-habits-and-knowledge-of-nutritional-requirements-a-college-students-perspective" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/181211.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">62</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">10</span> Impact of Silicon Surface Modification on the Catalytic Performance Towards CO₂ Conversion of Cu₂S/Si-Based Photocathodes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Karima%20Benfadel">Karima Benfadel</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Talbi"> Lamia Talbi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sabiha%20Anas%20Boussaa"> Sabiha Anas Boussaa</a>, <a href="https://publications.waset.org/abstracts/search?q=Afaf%20Brik"> Afaf Brik</a>, <a href="https://publications.waset.org/abstracts/search?q=Assia%20Boukezzata"> Assia Boukezzata</a>, <a href="https://publications.waset.org/abstracts/search?q=Yahia%20Ouadah"> Yahia Ouadah</a>, <a href="https://publications.waset.org/abstracts/search?q=Samira%20Kaci"> Samira Kaci</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to prevent global warming, which is mainly caused by the increase in carbon dioxide levels in the atmosphere, it is interesting to produce renewable energy in the form of chemical energy by converting carbon dioxide into alternative fuels and other energy-dense products. Photoelectrochemical reduction of carbon dioxide to value-added products and fuels is a promising and current method. The objective of our study is to develop Cu₂S-based photoélectrodes, in which Cu₂S is used as a CO₂ photoelectrocatalyst deposited on nanostructured silicon substrates. Cu₂S thin layers were deposited using the chemical bath deposition (CBD) technique. Silicon nanowires and nanopyramids were obtained by alkaline etching. SEM and UV-visible spectroscopy was used to analyse the morphology and optical characteristics. By using a potentiostat station, we characterized the photoelectrochemical properties. We performed cyclic voltammetry in the presence and without CO₂ purging as well as linear voltammetry (LSV) in the dark and under white light irradiation. We perform chronoamperometry to study the stability of our photocathodes. The quality of the nanowires and nanopyramids was visible in the SEM images, and after Cu₂S deposition, we could see how the deposition was distributed over the textured surfaces. The inclusion of the Cu₂S layer applied on textured substrates significantly reduces the reflectance (R%). The catalytic performance towards CO₂ conversion of Cu₂S/Si-based photocathodes revealed that the texturing of the silicon surface with nanowires and pyramids has a better photoelectrochemical behavior than those without surface modifications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CO%E2%82%82%20conversion" title="CO₂ conversion">CO₂ conversion</a>, <a href="https://publications.waset.org/abstracts/search?q=Cu%E2%82%82S%20photocathode" title=" Cu₂S photocathode"> Cu₂S photocathode</a>, <a href="https://publications.waset.org/abstracts/search?q=silicone%20nanostructured" title=" silicone nanostructured"> silicone nanostructured</a>, <a href="https://publications.waset.org/abstracts/search?q=electrochemistry" title=" electrochemistry"> electrochemistry</a> </p> <a href="https://publications.waset.org/abstracts/170801/impact-of-silicon-surface-modification-on-the-catalytic-performance-towards-co2-conversion-of-cu2ssi-based-photocathodes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/170801.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">78</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">9</span> Borderline Ovarian Tumor: Management of Recurrence After Conservative Surgical Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ghorbeli%20Eya">Ghorbeli Eya</a>, <a href="https://publications.waset.org/abstracts/search?q=Naija%20Lamia"> Naija Lamia</a>, <a href="https://publications.waset.org/abstracts/search?q=Khessairi%20Nayssem"> Khessairi Nayssem</a>, <a href="https://publications.waset.org/abstracts/search?q=Saadallah%20Fatma"> Saadallah Fatma</a>, <a href="https://publications.waset.org/abstracts/search?q=Slimane%20Maher"> Slimane Maher</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Ben%20Dhiab"> Tarek Ben Dhiab</a> </p> <p class="card-text"><strong>Abstract:</strong></p> INTRODUCTION: Borderline ovarian tumors account for 15 to 20% of ovarian tumors. Prognostic factors of recurrence include the stage of the disease, presence of peritoneal implants, micropapillary pattern, microinvasion and intra-epithelial carcinoma. Fertility sparing constitutes a major therapeutic issue in young patients that leads to conservative surgical treatment in specific cases. METHODS: We conducted a retrospective descriptive study including patients treated at the Salah Azaiez Institute for Borderline Ovarian Tumor who underwent conservative surgical treatment from 2003 to 2018. RESULTS: Nine patients were included in our study. The median age was 33 years. Three patients were nulliparous. Given the age, conservative treatment was indicated in all these patients. Cystectomy without ovariectomy was indicated in 5 of the 9 women, which was within the margin of tumor resection on definitive anatomopathic examination in 3 of the 5 women. In contrast, given the impossibility of ovarian conservation, total annexectomy was carried out in 4 of all these women. All of the patients were followed regularly postoperatively; three had a carcinomatous transformation as an ovarian adenocarcinoma at an average interval of 18 months. Among these three patients, a single one presented intra-peritoneal metastases, requiring radical surgical treatment and adjuvant chemotherapy with 6 cures of Carbo-Taxol, with a good tolerance and a complete response. Moreover, one patient had a recurrence on the contralateral ovary as a Borderline mucinous ovarian tumor. For the remaining four women, after a median follow-up of 35 months, one patient fell spontaneously pregnant during follow-up, and three patients were in complete remission at 16 months. CONCLUSION: Borderline tumors of the ovary usually occur in young patients, which makes conservative treatment advisable if possible, but this always comes with a risk of recurrence and/or carcinomatous transformation, especially if the conservative surgical procedure was a cystectomy instead of a total annexectomy, and even more so if the resection margins were tumoral. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ovarian%20tumor" title="ovarian tumor">ovarian tumor</a>, <a href="https://publications.waset.org/abstracts/search?q=conservative%20treatment" title=" conservative treatment"> conservative treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=surgical%20management" title=" surgical management"> surgical management</a>, <a href="https://publications.waset.org/abstracts/search?q=borderline%20ovarian%20tumor" title=" borderline ovarian tumor"> borderline ovarian tumor</a>, <a href="https://publications.waset.org/abstracts/search?q=recurrence%20management" title=" recurrence management"> recurrence management</a> </p> <a href="https://publications.waset.org/abstracts/190122/borderline-ovarian-tumor-management-of-recurrence-after-conservative-surgical-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/190122.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">31</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">8</span> Grade and Maximum Tumor Dimension as Determinants of Lymphadenectomy in Patients with Endometrioid Endometrial Cancer (EEC)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ali%20A.%20Bazzi">Ali A. Bazzi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ameer%20Hamza"> Ameer Hamza</a>, <a href="https://publications.waset.org/abstracts/search?q=Riley%20O%E2%80%99Hara"> Riley O’Hara</a>, <a href="https://publications.waset.org/abstracts/search?q=Kimberly%20Kado"> Kimberly Kado</a>, <a href="https://publications.waset.org/abstracts/search?q=Karen%20H.%20Hagglund"> Karen H. Hagglund</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamia%20Fathallah"> Lamia Fathallah</a>, <a href="https://publications.waset.org/abstracts/search?q=Robert%20T.%20Morris"> Robert T. Morris</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Endometrial Cancer is a common gynecologic malignancy primarily treated with complete surgical staging, which may include complete pelvic and para-aortic lymphadenectomy. The role of lymphadenectomy is controversial, especially the intraoperative indications for the procedure. Three factors are important in decision to proceed with lymphadenectomy: Myometrial invasion, maximum tumor dimension, and histology. Many institutions incorporate these criteria in varying degrees in the decision to proceed with lymphadenectomy. This investigation assesses the use of intraoperatively measured MTD with and without pre-operative histologic grade. Methods: This study compared retrospectively EEC patients with intraoperatively measured MTD ≤2 cm to those with MTD >2 cm from January 1, 2002 to August 31, 2017. This assessment compared those with MTD ≤ 2cm with endometrial biopsy (EB) grade 1-2 to patients with MTD > 2cm with EB grade 3. Lymph node metastasis (LNM), recurrence, and survival were compared in these groups. Results: This study reviewed 222 patient cases. In tumors > 2 cm, LNM occurred in 20% cases while in tumors ≤ 2 cm, LNM was found in 6% cases (p=0.04). Recurrence and mean survival based on last follow up visit in these two groups were not statistically different (p=0.78 and 0.36 respectively). Data demonstrated a trend that when combined with preoperative EB International Federation of Gynecology and Obstetrics (FIGO) grade, a higher proportion of patients with EB FIGO Grade 3 and MTD > 2 cm had LNM compared to those with EB FIGO Grade 1-2 and MTD ≤ 2 cm (43% vs, 11%, p=0.06). LNM was found in 15% of cases in which lymphadenectomy was performed based on current practices, whereas if the criteria of EB FIGO 3 and MTD > 2 cm were used the incidence of LNM would have been 44% cases. However, using this criterion, two patients would not have had their nodal metastases detected. Compared to the current practice, the sensitivity and specificity of the proposed criteria would be 60% and 81%, respectively. The PPV and NPV would be 43% and 90%, respectively. Conclusion: The results indicate that MTD combined with EB FIGO grade can detect LNM in a higher proportion of cases when compared to current practice. MTD combined with EB FIGO grade may eliminate the need of frozen section sampling in a substantial number of cases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=endometrial%20cancer" title="endometrial cancer">endometrial cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=FIGO%20grade" title=" FIGO grade"> FIGO grade</a>, <a href="https://publications.waset.org/abstracts/search?q=lymphadenectomy" title=" lymphadenectomy"> lymphadenectomy</a>, <a href="https://publications.waset.org/abstracts/search?q=tumor%20size" title=" tumor size"> tumor size</a> </p> <a href="https://publications.waset.org/abstracts/92494/grade-and-maximum-tumor-dimension-as-determinants-of-lymphadenectomy-in-patients-with-endometrioid-endometrial-cancer-eec" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92494.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span 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