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Bouaziz</title> <meta name="description" content="Search results for: Nahla Bouaziz"> <meta name="keywords" content="Nahla Bouaziz"> <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="Nahla Bouaziz"> <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> 36</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Nahla Bouaziz</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">36</span> Checking Energy Efficiency by Simulation Tools: The Case of Algerian Ksourian Models</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khadidja%20Rahmani">Khadidja Rahmani</a>, <a href="https://publications.waset.org/abstracts/search?q=Nahla%20Bouaziz"> Nahla Bouaziz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Algeria is known for its rich heritage. It owns an immense historical heritage with a universal reputation. Unfortunately, this wealth is withered because of abundance. This research focuses on the Ksourian model, which constitutes a large portion of this wealth. In fact, the Ksourian model is not just a witness to a great part of history or a vernacular culture, but also it includes a panoply of assets in terms of energetic efficiency. In this context, the purpose of our work is to evaluate the performance of the old techniques which are derived from the Ksourian model , and that using the simulation tools. The proposed method is decomposed in two steps; the first consists of isolate and reintroduce each device into a basic model, then run a simulation series on acquired models. And this in order to test the contribution of each of these dialectal processes. In another scale of development, the second step consists of aggregating all these processes in an aboriginal model, then we restart the simulation, to see what it will give this mosaic on the environmental and energetic plan .The model chosen for this study is one of the ksar units of Knadsa city of Bechar (Algeria). This study does not only show the ingenuity of our ancestors in their know-how, and their adapting power to the aridity of the climate, but also proves that their conceptions subscribe in the current concerns of energy efficiency, and respond to the requirements of sustainable development. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dialectal%20processes" title="dialectal processes">dialectal processes</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20efficiency" title=" energy efficiency"> energy efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=evaluation" title=" evaluation"> evaluation</a>, <a href="https://publications.waset.org/abstracts/search?q=Ksourian%20model" title=" Ksourian model"> Ksourian model</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation%20tools" title=" simulation tools"> simulation tools</a> </p> <a href="https://publications.waset.org/abstracts/88364/checking-energy-efficiency-by-simulation-tools-the-case-of-algerian-ksourian-models" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88364.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">195</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> Improving Comfort and Energy Mastery: Application of a Method Based on Indicators Morpho-Energetic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khadidja%20Rahmani">Khadidja Rahmani</a>, <a href="https://publications.waset.org/abstracts/search?q=Nahla%20Bouaziz"> Nahla Bouaziz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The climate change and the economic crisis, which are currently running, are the origin of the emergence of many issues and problems, which are related to the domain of energy and environment in à direct or indirect manner. Since the urban space is the core element and the key to solve the current problem, particular attention is given to it in this study. For this reason, we rented to the later a very particular attention; this is for the opportunities that it provides and that can be invested to attenuate a little this situation, which is disastrous and worried, especially in the face of the requirements of sustainable development. Indeed, the purpose of this work is to develop a method, which will allow us to guide designers towards projects with a certain degree of thermo-aeraulic comfort while requiring a minimum energy consumption. In this context, the architects, the urban planners and the engineers (energeticians) have to collaborate jointly to establish a method based on indicators for the improvement of the urban environmental quality (aeraulic-thermo comfort), correlated with a reduction in the energy demand of the entities that make up this environment, in areas with a sub-humid climate. In order to test the feasibility and to validate the method developed in this work, we carried out a series of simulations using computer-based simulation. This research allows us to evaluate the impact of the use of the indicators in the design of the urban sets, on the economic and ecological plan. Using this method, we prove that an urban design, which carefully considered energetically, can contribute significantly to the preservation of the environment and the reduction of the consumption of energy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=comfort" title="comfort">comfort</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20consumption" title=" energy consumption"> energy consumption</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20mastery" title=" energy mastery"> energy mastery</a>, <a href="https://publications.waset.org/abstracts/search?q=morpho-energetic%20indicators" title=" morpho-energetic indicators"> morpho-energetic indicators</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=sub-humid%20climate" title=" sub-humid climate"> sub-humid climate</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20sets" title=" urban sets"> urban sets</a> </p> <a href="https://publications.waset.org/abstracts/88143/improving-comfort-and-energy-mastery-application-of-a-method-based-on-indicators-morpho-energetic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88143.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">275</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> Fuzzy Semantic Annotation of Web Resources </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sahar%20Ma%C3%A2lej%20Dammak">Sahar Maâlej Dammak</a>, <a href="https://publications.waset.org/abstracts/search?q=Anis%20Jedidi"> Anis Jedidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Rafik%20Bouaziz"> Rafik Bouaziz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> With the great mass of pages managed through the world, and especially with the advent of the Web, their manual annotation is impossible. We focus, in this paper, on the semiautomatic annotation of the web pages. We propose an approach and a framework for semantic annotation of web pages entitled “Querying Web”. Our solution is an enhancement of the first result of annotation done by the “Semantic Radar” Plug-in on the web resources, by annotations using an enriched domain ontology. The concepts of the result of Semantic Radar may be connected to several terms of the ontology, but connections may be uncertain. We represent annotations as possibility distributions. We use the hierarchy defined in the ontology to compute degrees of possibilities. We want to achieve an automation of the fuzzy semantic annotation of web resources. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fuzzy%20semantic%20annotation" title="fuzzy semantic annotation">fuzzy semantic annotation</a>, <a href="https://publications.waset.org/abstracts/search?q=semantic%20web" title=" semantic web"> semantic web</a>, <a href="https://publications.waset.org/abstracts/search?q=domain%20ontologies" title=" domain ontologies"> domain ontologies</a>, <a href="https://publications.waset.org/abstracts/search?q=querying%20web" title=" querying web"> querying web</a> </p> <a href="https://publications.waset.org/abstracts/1854/fuzzy-semantic-annotation-of-web-resources" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1854.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">374</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> Enhancing the Performance of Vapor Compression Refrigeration Systems Using HFC134a by Nanoparticles Suspensions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hafsi%20Khebab">Hafsi Khebab</a>, <a href="https://publications.waset.org/abstracts/search?q=Zirari%20Mounir"> Zirari Mounir</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Nadjib%20Bouaziz"> Mohamed Nadjib Bouaziz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> High Global Warming Potential refrigerants (HydroFluroCarbons) are one of the worst greenhouse gases used in a wide variety of applications, including refrigeration and air-conditioning. Nanotechnology is a promising field in sustainable energy to reduce energy and ecological resource consumption for HVACR (heat, ventilation, air conditioning, and refrigeration) systems. Most researchers reported an improvement in heat transfer coefficient, Coefficient of performance. In this report, a brief summary has been done on the performance enhancement of the Vapor Compression Refrigeration system using HFC134a with nano refrigerants. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanorefrigerant" title="nanorefrigerant">nanorefrigerant</a>, <a href="https://publications.waset.org/abstracts/search?q=HFCs" title=" HFCs"> HFCs</a>, <a href="https://publications.waset.org/abstracts/search?q=greenhouse%20gases" title=" greenhouse gases"> greenhouse gases</a>, <a href="https://publications.waset.org/abstracts/search?q=GWP" title=" GWP"> GWP</a>, <a href="https://publications.waset.org/abstracts/search?q=HVACR%20systems" title=" HVACR systems"> HVACR systems</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20saving" title=" energy saving"> energy saving</a> </p> <a href="https://publications.waset.org/abstracts/159665/enhancing-the-performance-of-vapor-compression-refrigeration-systems-using-hfc134a-by-nanoparticles-suspensions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/159665.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">82</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> Fair Value Accounting and Evolution of the Ohlson Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Zaher%20Bouaziz">Mohamed Zaher Bouaziz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Our study examines the Ohlson Model, which links a company's market value to its equity and net earnings, in the context of the evolution of the Canadian accounting model, characterized by more extensive use of fair value and a broader measure of performance after IFRS adoption. Our hypothesis is that if equity is reported at its fair value, this valuation is closely linked to market capitalization, so the weight of earnings weakens or even disappears in the Ohlson Model. Drawing on Canada's adoption of the International Financial Reporting Standards (IFRS), our results support our hypothesis that equity appears to include most of the relevant information for investors, while earnings have become less important. However, the predictive power of earnings does not disappear. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fair%20value%20accounting" title="fair value accounting">fair value accounting</a>, <a href="https://publications.waset.org/abstracts/search?q=Ohlson%20model" title=" Ohlson model"> Ohlson model</a>, <a href="https://publications.waset.org/abstracts/search?q=IFRS%20adoption" title=" IFRS adoption"> IFRS adoption</a>, <a href="https://publications.waset.org/abstracts/search?q=value-relevance%20of%20equity%20and%20earnings" title=" value-relevance of equity and earnings"> value-relevance of equity and earnings</a> </p> <a href="https://publications.waset.org/abstracts/106775/fair-value-accounting-and-evolution-of-the-ohlson-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106775.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">189</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> Correlation Matrix for Automatic Identification of Meal-Taking Activity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ghazi%20Bouaziz">Ghazi Bouaziz</a>, <a href="https://publications.waset.org/abstracts/search?q=Abderrahim%20Derouiche"> Abderrahim Derouiche</a>, <a href="https://publications.waset.org/abstracts/search?q=Damien%20Brulin"> Damien Brulin</a>, <a href="https://publications.waset.org/abstracts/search?q=H%C3%A9l%C3%A8ne%20Pigot"> Hélène Pigot</a>, <a href="https://publications.waset.org/abstracts/search?q=Eric%20Campo"> Eric Campo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Automatic ADL classification is a crucial part of ambient assisted living technologies. It allows to monitor the daily life of the elderly and to detect any changes in their behavior that could be related to health problem. But detection of ADLs is a challenge, especially because each person has his/her own rhythm for performing them. Therefore, we used a correlation matrix to extract custom rules that enable to detect ADLs, including eating activity. Data collected from 3 different individuals between 35 and 105 days allows the extraction of personalized eating patterns. The comparison of the results of the process of eating activity extracted from the correlation matrices with the declarative data collected during the survey shows an accuracy of 90%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=elderly%20monitoring" title="elderly monitoring">elderly monitoring</a>, <a href="https://publications.waset.org/abstracts/search?q=ADL%20identification" title=" ADL identification"> ADL identification</a>, <a href="https://publications.waset.org/abstracts/search?q=matrix%20correlation" title=" matrix correlation"> matrix correlation</a>, <a href="https://publications.waset.org/abstracts/search?q=meal-taking%20activity" title=" meal-taking activity"> meal-taking activity</a> </p> <a href="https://publications.waset.org/abstracts/155224/correlation-matrix-for-automatic-identification-of-meal-taking-activity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/155224.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">93</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">30</span> Reservoir Characterization of the Pre-Cenomanian Sandstone: Central Sinai, Egypt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdel%20Moktader%20A.%20El%20Sayed">Abdel Moktader A. El Sayed</a>, <a href="https://publications.waset.org/abstracts/search?q=Nahla%20A.%20El%20Sayed"> Nahla A. El Sayed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fifty-one sandstone core samples were obtained from the wadi Saal area. They belong to the Pre-Cenomanian age. These samples were subjected to various laboratory measurements such as density, porosity, permeability, electrical resistivity, grain size analysis and ultrasonic wave velocity. The parameters describing reservoir properties are outlined. The packing index, reservoir quality index, flow zone indicator and pore throat radius (R35 and R36) were calculated. The obtained interrelationships among these parameters allow improving petrophysical knowledge about the Pre-Cenomanian reservoir information. The obtained rock physics models could be employed with some precautions to the subsurface existences of the Pre-Cenomanian sandstone reservoirs, especially in the surrounding areas. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=resevoir%20sandstone" title="resevoir sandstone">resevoir sandstone</a>, <a href="https://publications.waset.org/abstracts/search?q=Egypt" title=" Egypt"> Egypt</a>, <a href="https://publications.waset.org/abstracts/search?q=Sinai" title=" Sinai"> Sinai</a>, <a href="https://publications.waset.org/abstracts/search?q=permeability" title=" permeability"> permeability</a> </p> <a href="https://publications.waset.org/abstracts/162994/reservoir-characterization-of-the-pre-cenomanian-sandstone-central-sinai-egypt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/162994.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">100</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> Is the Okun's Law Valid in Tunisia?</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=El%20Andari%20Chifaa">El Andari Chifaa</a>, <a href="https://publications.waset.org/abstracts/search?q=Bouaziz%20Rached"> Bouaziz Rached</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The central focus of this paper was to check whether the Okun’s law in Tunisia is valid or not. For this purpose, we have used quarterly time series data during the period 1990Q1-2014Q1. Firstly, we applied the error correction model instead of the difference version of Okun's Law, the Engle-Granger and Johansen test are employed to find out long run association between unemployment, production, and how error correction mechanism (ECM) is used for short run dynamic. Secondly, we used the gap version of Okun’s law where the estimation is done from three band pass filters which are mathematical tools used in macro-economic and especially in business cycles theory. The finding of the study indicates that the inverse relationship between unemployment and output is verified in the short and long term, and the Okun's law holds for the Tunisian economy, but with an Okun’s coefficient lower than required. Therefore, our empirical results have important implications for structural and cyclical policymakers in Tunisia to promote economic growth in a context of lower unemployment growth. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Okun%E2%80%99s%20law" title="Okun’s law">Okun’s law</a>, <a href="https://publications.waset.org/abstracts/search?q=validity" title=" validity"> validity</a>, <a href="https://publications.waset.org/abstracts/search?q=unit%20root" title=" unit root"> unit root</a>, <a href="https://publications.waset.org/abstracts/search?q=cointegration" title=" cointegration"> cointegration</a>, <a href="https://publications.waset.org/abstracts/search?q=error%20correction%20model" title=" error correction model"> error correction model</a>, <a href="https://publications.waset.org/abstracts/search?q=bandpass%20filters" title=" bandpass filters"> bandpass filters</a> </p> <a href="https://publications.waset.org/abstracts/42765/is-the-okuns-law-valid-in-tunisia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42765.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">317</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> Influence of Thermal Radiation on MHD Micropolar Fluid Flow, Heat and Mass Transfer over Vertical Flat Plate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alouaoui%20%20Redha">Alouaoui Redha</a>, <a href="https://publications.waset.org/abstracts/search?q=Ferhat%20Samira"> Ferhat Samira</a>, <a href="https://publications.waset.org/abstracts/search?q=Bouaziz%20Mohamed%20Najib"> Bouaziz Mohamed Najib</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we examine the thermal radiation effect on heat and mass transfer in steady laminar boundary layer flow of an incompressible viscous micropolar fluid over a vertical plate, with the presence of a magnetic field. Rosseland approximation is applied to describe the radiative heat flux in the energy equation. The resulting similarity equations are solved numerically. Many results are obtained and representative set is displayed graphically to illustrate the influence of the various parameters on different profiles. The conclusion is drawn that the flow field, temperature, concentration and microrotation as well as the skin friction coefficient and the both local Nusselt and local Sherwood numbers are significantly influenced by Magnetic parameter, material parameter and thermal radiation parameter. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=MHD" title="MHD">MHD</a>, <a href="https://publications.waset.org/abstracts/search?q=micropolar%20fluid" title=" micropolar fluid"> micropolar fluid</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20radiation" title=" thermal radiation"> thermal radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20and%20mass%20transfer" title=" heat and mass transfer"> heat and mass transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=boundary%20layer" title=" boundary layer"> boundary layer</a> </p> <a href="https://publications.waset.org/abstracts/39803/influence-of-thermal-radiation-on-mhd-micropolar-fluid-flow-heat-and-mass-transfer-over-vertical-flat-plate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39803.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">453</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> Hepatotoxicity Induced by Arsenic Trioxide in Adult Mice and Their Progeny</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bouaziz%20H.">Bouaziz H.</a>, <a href="https://publications.waset.org/abstracts/search?q=Soudania%20N."> Soudania N.</a>, <a href="https://publications.waset.org/abstracts/search?q=Essafia%20M."> Essafia M.</a>, <a href="https://publications.waset.org/abstracts/search?q=Ben%20Amara%20I."> Ben Amara I.</a>, <a href="https://publications.waset.org/abstracts/search?q=Hakim%20A."> Hakim A.</a>, <a href="https://publications.waset.org/abstracts/search?q=Jamoussi%20K."> Jamoussi K.</a>, <a href="https://publications.waset.org/abstracts/search?q=Zeghal%20Km"> Zeghal Km</a>, <a href="https://publications.waset.org/abstracts/search?q=Zeghal%20N."> Zeghal N.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this investigation, we have evaluated the effects of arsenic trioxide on hepatic function in pregnant and lactating Swiss albino mice and their suckling pups. Experiments were carried out on female mice given 175 ppm As2O3 in their drinking water from the 14th day of pregnancy until day 14 after delivery. Our results showed a significant decrease in plasma levels of total protein and albumin, cholesterol and triglyceride in As2O3 treated mice and their pups. The hyperbilirubinemia and the increased plasma total alkaline phosphatase activity suggested the presence of cholestasis. Transaminase activities as well as lactate deshydrogenase activity in plasma, known as biomarkers of hepatocellular injury, were elevated indicating hepatic cells’damage after treatment with As2O3. Exposure to arsenic led to an increase of liver thiobarbituric acid reactive substances level along with a concomitant decrease in the activities of superoxide dismutase, catalase and glutathione peroxidase and in glutathione. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20status" title="antioxidant status">antioxidant status</a>, <a href="https://publications.waset.org/abstracts/search?q=arsenic%20trioxide" title=" arsenic trioxide"> arsenic trioxide</a>, <a href="https://publications.waset.org/abstracts/search?q=hepatotoxicity" title=" hepatotoxicity"> hepatotoxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=mice" title=" mice"> mice</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidative%20stress" title=" oxidative stress"> oxidative stress</a> </p> <a href="https://publications.waset.org/abstracts/22776/hepatotoxicity-induced-by-arsenic-trioxide-in-adult-mice-and-their-progeny" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22776.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">255</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> Feasibility Study to Enhance the Heat Transfer in a Typical Pressurized Water Reactor by Ribbed Spacer Grids</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Ghadbane">A. Ghadbane</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20N.%20Bouaziz"> M. N. Bouaziz</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Hanini"> S. Hanini</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Baggoura"> B. Baggoura</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Abbaci"> M. Abbaci </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The spacer grids are used to fix the rods bundle in a nuclear reactor core also act as turbulence-enhancing devices to improve the heat transfer from the hot surfaces of the rods to the surrounding coolant stream. Therefore, the investigation of thermal-hydraulic characteristics inside the rod bundles is important for optima design and safety operation of a nuclear reactor power plant. This contribution presents a feasibility study to use the ribbed spacer grids as mixing devices. The present study evaluates the effects of different ribbed spacer grids configurations on flow pattern and heat transfer in the downstream of the mixing devices in a 2 x 2 rod bundle array. This is done by obtaining velocity and pressure fields, turbulent intensity and the heat transfer coefficient using a three-dimensional CFD analysis. Numerical calculations are performed by employing K-ε turbulent model. The computational results obtained are promising and the comparison with standard spacer grids shows a clear difference which required the experimental approach to validate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=PWR%20fuel%20assembly" title="PWR fuel assembly">PWR fuel assembly</a>, <a href="https://publications.waset.org/abstracts/search?q=spacer%20grid" title=" spacer grid"> spacer grid</a>, <a href="https://publications.waset.org/abstracts/search?q=mixing%20vane" title=" mixing vane"> mixing vane</a>, <a href="https://publications.waset.org/abstracts/search?q=swirl%20flow" title=" swirl flow"> swirl flow</a>, <a href="https://publications.waset.org/abstracts/search?q=turbulent%20heat%20transfer" title=" turbulent heat transfer"> turbulent heat transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD" title=" CFD"> CFD</a> </p> <a href="https://publications.waset.org/abstracts/16937/feasibility-study-to-enhance-the-heat-transfer-in-a-typical-pressurized-water-reactor-by-ribbed-spacer-grids" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16937.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">488</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> Model Free Terminal Sliding Mode with Gravity Compensation: Application to an Exoskeleton-Upper Limb System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sana%20Bembli">Sana Bembli</a>, <a href="https://publications.waset.org/abstracts/search?q=Nahla%20Khraief%20Haddad"> Nahla Khraief Haddad</a>, <a href="https://publications.waset.org/abstracts/search?q=Safya%20Belghith"> Safya Belghith</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper deals with a robust model free terminal sliding mode with gravity compensation approach used to control an exoskeleton-upper limb system. The considered system is a 2-DoF robot in interaction with an upper limb used for rehabilitation. The aim of this paper is to control the flexion/extension movement of the shoulder and the elbow joints in presence of matched disturbances. In the first part, we present the exoskeleton-upper limb system modeling. Then, we controlled the considered system by the model free terminal sliding mode with gravity compensation. A stability study is realized. To prove the controller performance, a robustness analysis was needed. Simulation results are provided to confirm the robustness of the gravity compensation combined with to the Model free terminal sliding mode in presence of uncertainties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=exoskeleton-%20upper%20limb%20system" title="exoskeleton- upper limb system">exoskeleton- upper limb system</a>, <a href="https://publications.waset.org/abstracts/search?q=model%20free%20terminal%20sliding%20mode" title=" model free terminal sliding mode"> model free terminal sliding mode</a>, <a href="https://publications.waset.org/abstracts/search?q=gravity%20compensation" title=" gravity compensation"> gravity compensation</a>, <a href="https://publications.waset.org/abstracts/search?q=robustness%20analysis" title=" robustness analysis"> robustness analysis</a> </p> <a href="https://publications.waset.org/abstracts/129467/model-free-terminal-sliding-mode-with-gravity-compensation-application-to-an-exoskeleton-upper-limb-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/129467.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">144</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> In vitro Cytotoxic and Genotoxic Effects of Arsenic Trioxide on Human Keratinocytes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20Bouaziz">H. Bouaziz</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Sefi"> M. Sefi</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20de%20Lapuente"> J. de Lapuente</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Borras"> M. Borras</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Zeghal"> N. Zeghal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Although arsenic trioxide has been the subject of toxicological research, in vitro cytotoxicity and genotoxicity studies using relevant cell models and uniform methodology are not well elucidated. Hence, the aim of the present study was to evaluate the cytotoxicity and genotoxicity induced by arsenic trioxide in human keratinocytes (HaCaT) using the MTT [3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] and alkaline single cell gel electrophoresis (Comet) assays, respectively. Human keratinocytes were treated with different doses of arsenic trioxide for 4 h prior to cytogenetic assessment. Data obtained from the MTT assay indicated that arsenic trioxide significantly reduced the viability of HaCaT cells in a dose-dependent manner, showing a IC50 value of 34.18 ± 0.6 µM. Data generated from the comet assay also indicated a significant dose-dependent increase in DNA damage in HaCaT cells associated with arsenic trioxide exposure. We observed a significant increase in comet tail length and tail moment, showing an evidence of arsenic trioxide -induced genotoxic damage in HaCaT cells. This study confirms that the comet assay is a sensitive and effective method to detect DNA damage caused by arsenic. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=arsenic%20trioxide" title="arsenic trioxide">arsenic trioxide</a>, <a href="https://publications.waset.org/abstracts/search?q=cytotoxixity" title=" cytotoxixity"> cytotoxixity</a>, <a href="https://publications.waset.org/abstracts/search?q=genotoxicity" title=" genotoxicity"> genotoxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=HaCaT" title=" HaCaT"> HaCaT</a> </p> <a href="https://publications.waset.org/abstracts/27537/in-vitro-cytotoxic-and-genotoxic-effects-of-arsenic-trioxide-on-human-keratinocytes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27537.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">257</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> Removal of Heavy Metal Using Continous Mode</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Abd%20elfattah">M. Abd elfattah</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Ossman"> M. Ossman</a>, <a href="https://publications.waset.org/abstracts/search?q=Nahla%20A.%20Taha"> Nahla A. Taha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present work explored the use of Egyptian rice straw, an agricultural waste that leads to global warming problem through brown cloud, as a potential feedstock for the preparation of activated carbon by physical and chemical activation. The results of this study showed that it is feasible to prepare activated carbons with relatively high surface areas and pore volumes from the Egyptian rice straw by direct chemical and physical activation. The produced activated carbon from the two methods (AC1 and AC2) could be used as potential adsorbent for the removal of Fe(III) from aqueous solution contains heavy metals and polluted water. The adsorption of Fe(III) was depended on the pH of the solution. The optimal Fe(III) removal efficiency occurs at pH 5. Based on the results, the optimum contact time is 60 minutes and adsorbent dosage is 3 g/L. The adsorption breakthrough curves obtained at different bed depths indicated increase of breakthrough time with increase in bed depths. A rise in inlet Fe(III) concentration reduces the throughput volume before the packed bed gets saturated. AC1 showed higher affinity for Fe(III) as compared to Raw rice husk. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rice%20straw" title="rice straw">rice straw</a>, <a href="https://publications.waset.org/abstracts/search?q=activated%20carbon" title=" activated carbon"> activated carbon</a>, <a href="https://publications.waset.org/abstracts/search?q=Fe%28III%29" title=" Fe(III)"> Fe(III)</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20bed%20column" title=" fixed bed column"> fixed bed column</a>, <a href="https://publications.waset.org/abstracts/search?q=pyrolysis" title=" pyrolysis"> pyrolysis</a> </p> <a href="https://publications.waset.org/abstracts/15530/removal-of-heavy-metal-using-continous-mode" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15530.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">249</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> Diagnosis of Alzheimer Diseases in Early Step Using Support Vector Machine (SVM)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amira%20Ben%20Rabeh">Amira Ben Rabeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Faouzi%20Benzarti"> Faouzi Benzarti</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamid%20Amiri"> Hamid Amiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Mouna%20Bouaziz"> Mouna Bouaziz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Alzheimer is a disease that affects the brain. It causes degeneration of nerve cells (neurons) and in particular cells involved in memory and intellectual functions. Early diagnosis of Alzheimer Diseases (AD) raises ethical questions, since there is, at present, no cure to offer to patients and medicines from therapeutic trials appear to slow the progression of the disease as moderate, accompanying side effects sometimes severe. In this context, analysis of medical images became, for clinical applications, an essential tool because it provides effective assistance both at diagnosis therapeutic follow-up. Computer Assisted Diagnostic systems (CAD) is one of the possible solutions to efficiently manage these images. In our work; we proposed an application to detect Alzheimer’s diseases. For detecting the disease in early stage we used the three sections: frontal to extract the Hippocampus (H), Sagittal to analysis the Corpus Callosum (CC) and axial to work with the variation features of the Cortex(C). Our method of classification is based on Support Vector Machine (SVM). The proposed system yields a 90.66% accuracy in the early diagnosis of the AD. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alzheimer%20Diseases%20%28AD%29" title="Alzheimer Diseases (AD)">Alzheimer Diseases (AD)</a>, <a href="https://publications.waset.org/abstracts/search?q=Computer%20Assisted%20Diagnostic%28CAD%29" title=" Computer Assisted Diagnostic(CAD)"> Computer Assisted Diagnostic(CAD)</a>, <a href="https://publications.waset.org/abstracts/search?q=hippocampus" title=" hippocampus"> hippocampus</a>, <a href="https://publications.waset.org/abstracts/search?q=Corpus%20Callosum%20%28CC%29" title=" Corpus Callosum (CC)"> Corpus Callosum (CC)</a>, <a href="https://publications.waset.org/abstracts/search?q=cortex" title=" cortex"> cortex</a>, <a href="https://publications.waset.org/abstracts/search?q=Support%20Vector%20Machine%20%28SVM%29" title=" Support Vector Machine (SVM)"> Support Vector Machine (SVM)</a> </p> <a href="https://publications.waset.org/abstracts/43182/diagnosis-of-alzheimer-diseases-in-early-step-using-support-vector-machine-svm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43182.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">384</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">21</span> High Frequency Memristor-Based BFSK and 8QAM Demodulators</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nahla%20Elazab">Nahla Elazab</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Aboudina"> Mohamed Aboudina</a>, <a href="https://publications.waset.org/abstracts/search?q=Ghada%20Ibrahim"> Ghada Ibrahim</a>, <a href="https://publications.waset.org/abstracts/search?q=Hossam%20Fahmy"> Hossam Fahmy</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Khalil"> Ahmed Khalil</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the developed memristor based demodulators for eight circular Quadrature Amplitude Modulation (QAM) and Binary Frequency Shift Keying (BFSK) operating at relatively high frequency. In our implementations, the experimental-based ‘nonlinear’ dopant drift model is adopted along with the proposed circuits providing incorporation of all known non-idealities of practically realized memristor and gaining high operation frequency. The suggested designs leverage the distinctive characteristics of the memristor device, definitely, its changeable average memristance versus the frequency, phase and amplitude of the periodic excitation input. The proposed demodulators feature small integration area, low power consumption, and easy implementation. Moreover, the proposed QAM demodulator precludes the requirement for the carrier recovery circuits. In doing so, the designs were validated by transient simulations using the nonlinear dopant drift memristor model. The simulations results show high agreement with the theory presented. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=BFSK" title="BFSK">BFSK</a>, <a href="https://publications.waset.org/abstracts/search?q=demodulator" title=" demodulator"> demodulator</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20frequency%20memristor%20applications" title=" high frequency memristor applications"> high frequency memristor applications</a>, <a href="https://publications.waset.org/abstracts/search?q=memristor%20based%20analog%20circuits" title=" memristor based analog circuits"> memristor based analog circuits</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20dopant%20drift%20model" title=" nonlinear dopant drift model"> nonlinear dopant drift model</a>, <a href="https://publications.waset.org/abstracts/search?q=QAM" title=" QAM"> QAM</a> </p> <a href="https://publications.waset.org/abstracts/125099/high-frequency-memristor-based-bfsk-and-8qam-demodulators" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/125099.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">167</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> In vivo Evidence of Protective Effect of Hyparrhenia Hirta against Nitrate-Induced Genotoxicity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20Bouaziz-Ketata">H. Bouaziz-Ketata</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Ben%20Salah"> G. Ben Salah</a>, <a href="https://publications.waset.org/abstracts/search?q=Z.%20Aidi"> Z. Aidi</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Kallel"> C. Kallel</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Kammoun"> H. Kammoun</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Fakhfakh"> F. Fakhfakh</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Zeghal"> N. Zeghal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study was performed to evaluate the potential protective effect of Hyparrhenia hirta methanolic extract in NaNO3-induced genotoxic and hematotoxic effects. Male Wistar rats were randomly divided into three groups: a control group and two treated groups during 50 days with NaNO3 administered at a dose of 400 mg kg-1 bw either alone in drinking water or co-administered with Hyparrhenia hirta at a dose of 200 mg kg-1 bw. NaNO3 treatment showed a significant increase in the frequencies of total chromosomal aberrations, aberrant metaphases and micronucleus in bone-marrow cells. In parallel, the NaNO3-treated group showed a significant decrease in red blood cell count, hemoglobin and hematocrit and a significant increase in total white blood cell, in neutrophil and eosinophil counts. Platelet count, mean corpuscular volume, mean corpuscular hemoglobin, and mean corpuscular hemoglobin concentration remained unchanged in treated groups compared to those of controls. Hyparrhenia hirta methanolic extract appeared to be effective against genotoxic and hematotoxic changes induced by nitrate, as evidenced by the improvement of the markers cited above. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hyparrhenia%20hirta" title="Hyparrhenia hirta">Hyparrhenia hirta</a>, <a href="https://publications.waset.org/abstracts/search?q=sodium%20nitrate" title=" sodium nitrate"> sodium nitrate</a>, <a href="https://publications.waset.org/abstracts/search?q=erythrocytes" title=" erythrocytes"> erythrocytes</a>, <a href="https://publications.waset.org/abstracts/search?q=genotoxicity" title=" genotoxicity "> genotoxicity </a> </p> <a href="https://publications.waset.org/abstracts/22777/in-vivo-evidence-of-protective-effect-of-hyparrhenia-hirta-against-nitrate-induced-genotoxicity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22777.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">258</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> Comparative Study of Wear and Friction Behavior of Tricalcium Phosphate-Fluorapatite Bioceramic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rym%20Taktak">Rym Taktak</a>, <a href="https://publications.waset.org/abstracts/search?q=Achwek%20Elghazel"> Achwek Elghazel</a>, <a href="https://publications.waset.org/abstracts/search?q=Jamel%20Bouaziz"> Jamel Bouaziz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present work, we explored the potential of tribological behavior of tricalcium phosphate-Fluorapatite (β Tcp-Fap) bioceramic which has attracted considerable attention for orthopedics and dental applications. The approximate representatives Fap-βTcp were respectively [{13.26 wt%, 86.74 wt%} {19.9 wt%, 80.1 wt%},{ 26.52 wt%, 73.48 wt%}, {33.16 wt%, 66.84 wt%} and {40 wt%, 60 wt%}. The effects of Fluorapatite additives on friction and wear behavior were studied and discussed. The wear test was conducted using pion-disk tribometer at room temperature under dry condition using a constant sliding speed of 0,063 m/s, and three loads 3, 5 and 8 N. The wear rate and friction coefficient of β Tcp with different additive amounts were compared. An Alumina ball specimens were used as the pin and flat surface β Tcp-Fap specimens as the antagonist counterface. The results show a huge difference between the wear rate of β TCP samples and the other β TCP-Fap composites for all normal forces applied. This result shows the beneficial effect of fluorapatite on the tribological behavior of the β TCP. Moreover, we note that β Tcp-26% Fap specimens exhibit, under dry condition, the lower friction coefficient and the smaller wear rate than other biocomposites. Thereby, the friction and wear behavior is influenced by the addition of fluorapatite, the applied normal force, and the sliding velocity. To extend the understanding of the wear process, the surface topography of β Tcp-26% Fap specimens and the wear track obtained during the wear tests were studied using a surface profilometer, optical microscopy, and scanning electron microscopy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alumina" title="alumina">alumina</a>, <a href="https://publications.waset.org/abstracts/search?q=bioceramic" title=" bioceramic"> bioceramic</a>, <a href="https://publications.waset.org/abstracts/search?q=friction%20and%20wear%20test" title=" friction and wear test"> friction and wear test</a>, <a href="https://publications.waset.org/abstracts/search?q=tricalcium%20phosphate" title=" tricalcium phosphate"> tricalcium phosphate</a> </p> <a href="https://publications.waset.org/abstracts/55316/comparative-study-of-wear-and-friction-behavior-of-tricalcium-phosphate-fluorapatite-bioceramic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55316.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">234</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18</span> English for Specific Purposes: Its Definition, Characteristics, and the Role of Needs Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Karima%20Tayaa">Karima Tayaa</a>, <a href="https://publications.waset.org/abstracts/search?q=Amina%20Bouaziz"> Amina Bouaziz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The rapid expansion in the scientific fields and the growth of communication technology increased the use of English as international language in the world. Hence, over the past few decades, many researchers have been emphasizing on how the teaching and learning of English as a foreign or as an additional language can best help students to perform successfully. English for specific purpose is today quite literally regarded as the most global language discipline which existed practically in every country in the world. ESP (English for Specific Purposes) involves teaching and learning the specific skills and language needed by particular learners for a particular purpose. The P in ESP is always a professional purpose which is a set of skills that learners currently need in their work or will need in their professional careers. It has had an early origin since 1960’s and has grown to become one of the most prominent of English language teaching today. Moreover, ESP learners are usually adults who have some quittances with English and learn the language so as to communicate and perform particular profession. Related activities are based on specific purposes and needs. They are integrated into subject matter area important to the learners. Unlike general English which focuses on teaching general language courses and all four language skills are equally stressed, ESP and practically needs analysis determine which language skills are the most needed by the learners and syllabus designed accordingly. This paper looked into the origin, characteristics, development of ESP, the difference between ESP and general English. Finally, the paper critically reviews the role of needs analysis in the ESP. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=English%20language%20teaching" title="English language teaching">English language teaching</a>, <a href="https://publications.waset.org/abstracts/search?q=English%20for%20general%20purposes" title=" English for general purposes"> English for general purposes</a>, <a href="https://publications.waset.org/abstracts/search?q=English%20for%20specific%20purposes" title=" English for specific purposes"> English for specific purposes</a>, <a href="https://publications.waset.org/abstracts/search?q=needs%20analysis" title=" needs analysis"> needs analysis</a> </p> <a href="https://publications.waset.org/abstracts/43586/english-for-specific-purposes-its-definition-characteristics-and-the-role-of-needs-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43586.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">405</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17</span> Documentation of Traditional Knowledge on Wild Medicinal Plants of Egypt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nahla%20S.%20Abdel-Azim">Nahla S. Abdel-Azim</a>, <a href="https://publications.waset.org/abstracts/search?q=Khaled%20A.%20Shams"> Khaled A. Shams</a>, <a href="https://publications.waset.org/abstracts/search?q=Elsayed%20A.%20Omer"> Elsayed A. Omer</a>, <a href="https://publications.waset.org/abstracts/search?q=Mahmoud%20M.%20Sakr"> Mahmoud M. Sakr</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Medicinal plants play a significant role in the health care system in Egypt. Knowledge developed over the years by people is mostly unrecorded and orally passes on from one generation to the next. This knowledge is facing the danger of becoming extinct. Therefore there is an urgent need to document the medicinal and aromatic plants associated with traditional knowledge. The Egyptian Encyclopedia of wild medicinal plants (EEWMP) is the first attempt to collect most of the basic elements of the medicinal plant resources of Egypt and their traditional uses. It includes scientific data on about 500 medicinal plants in the form of monographs. Each monograph contains all available information and scientific data on the selected species including the following: names, description, distribution, parts used, habitat, conservational status, active or major chemical constituents, folk medicinal uses and heritage resources, pharmacological and biological activities, authentication, pharmaceutical products, and cultivation. The DNA bar-coding is also included (when available). A brief Arabic summary is given for every monograph. This work revealed the diversity in plant parts used in the treatment of different ailments. In addition, the traditional knowledge gathered can be considered a good starting point for effective in situ and ex-situ conservation of endangered plant species. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=encyclopedia" title="encyclopedia">encyclopedia</a>, <a href="https://publications.waset.org/abstracts/search?q=medicinal%20plant" title=" medicinal plant"> medicinal plant</a>, <a href="https://publications.waset.org/abstracts/search?q=traditional%20medicine" title=" traditional medicine"> traditional medicine</a>, <a href="https://publications.waset.org/abstracts/search?q=wild%20flora" title=" wild flora"> wild flora</a> </p> <a href="https://publications.waset.org/abstracts/110623/documentation-of-traditional-knowledge-on-wild-medicinal-plants-of-egypt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/110623.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">214</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> Analysis of Learning Difficulties among Preservice Students towards Science Education</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nahla%20Khatib">Nahla Khatib</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study investigated several learning difficulties that affected the classroom learning experience of preservice students who are studying general science and methods of teaching science students at Faculty of Educational Studies at the Arab Open University (AOU) in Amman, Jordan. The focus questions for this study were to find answers for the following: 1. What are the main areas of learning difficulty among preservice students towards science education? 2. What are the main aspects of reducing obstacles towards success in science education? To achieve this goal, the researcher prepared a questionnaire which included 30 items to point out the learning difficulties among preservice students towards science education. The questionnaire was distributed among students enrolled in the general science courses 1&2 and methods of teaching science courses at the beginning of the spring semester of year (2013-2014). After collecting the filled questionnaire a descriptive statistical analysis was carried out (means and standard deviation) for the items of the questionnaire. After analyzing the data statistically our findings showed that student control–factors as well as course controlled factor, factors related to the nature of science, and factors related to the role of instructor affected student success toward science education. The study was concluded with a number of recommendations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nature%20of%20science" title="nature of science">nature of science</a>, <a href="https://publications.waset.org/abstracts/search?q=preservice%20teachers" title=" preservice teachers"> preservice teachers</a>, <a href="https://publications.waset.org/abstracts/search?q=science%20education" title=" science education"> science education</a>, <a href="https://publications.waset.org/abstracts/search?q=learning%20difficulties" title=" learning difficulties"> learning difficulties</a> </p> <a href="https://publications.waset.org/abstracts/11993/analysis-of-learning-difficulties-among-preservice-students-towards-science-education" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11993.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">352</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> Emergence of Carbapenemase Escherichia Coli Isolates from the Little Egret (Egretta Garzetta) in Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bouaziz%20Amira">Bouaziz Amira</a>, <a href="https://publications.waset.org/abstracts/search?q=Zaatout%20Nawel"> Zaatout Nawel</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Antimicrobial resistance is an urgent global health challenge in human and veterinary medicine, where migratory birds play a major role in the dissemination of multi-drug-resistant bacteria. The aim of this study was to screen for the presence of carbapenemase-producing Gram-negative bacteria (GNB) in the little egret (Egrettagarzetta) migratory bird stools in Algeria. Materials/Methods: In January 2014, 12 feacal samples were collected in Garaet El-Tarf, Oum El-Bouaghi city, Algeria. Samples were subjected to selective isolation of carbapenem-resistant GNB. Representative colonies were identified using the VITEK system. The obtained isolates were subjected to antibiotic susceptibility testing using the disc-diffusion method as well as carbapenemase production was verified by the modified Carba NP test. Results: In total, ten E. coli were obtained and were resistant to amoxicillin/clavulanic acid (100%), ertapenem (70%), cefoxitin (60%) cefotaxime (20%), cefepime (20%), ciprofloxacin (20%) and aztreonam (10%). The phenotypic detection results revealed that six out of the obtained strains were positive for the modified Carba NP test. Conclusion: The present study suggests that the little egret (Egretta garzetta) could be considered a reservoir of carbapenem-resistant Gram-negative bacteria. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antimicrobial%20resistance" title="antimicrobial resistance">antimicrobial resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20coli" title=" E. coli"> E. coli</a>, <a href="https://publications.waset.org/abstracts/search?q=Egretta%20garzetta" title=" Egretta garzetta"> Egretta garzetta</a>, <a href="https://publications.waset.org/abstracts/search?q=carbapenem%20resistance" title=" carbapenem resistance"> carbapenem resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=dissemination" title=" dissemination"> dissemination</a> </p> <a href="https://publications.waset.org/abstracts/194573/emergence-of-carbapenemase-escherichia-coli-isolates-from-the-little-egret-egretta-garzetta-in-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/194573.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">7</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> Students Reading and Viewing the American Novel in a University EFL/ESL Context: A Picture of Real Life </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nola%20Nahla%20Bacha">Nola Nahla Bacha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Research has indicated that ESL/EFL (nonnative students of English) students have difficulty in reading at the university as often times the requirements are long texts in which both cultural and linguistic factors impede their understanding and thus their motivation. This is especially the case in literature courses. It is the author’s view that if readings are selected according to the students’ interests and linguistic level, related to life situations and coupled with film study they will not only be motivated to read, but they will find reading interesting and exciting. They will view novels, and thus literature, as a picture of life. Students will also widen their vocabulary repertoire and overcome many of their linguistic problems. This study describes the procedure used in in a 20th Century American Novel class at one English medium university in Lebanon and explores students’ views on the novels assigned and their recommendations. Findings indicate that students significantly like to read novels, contrary to what some faculty claim and view the inclusion of novels as helping them with expanding their vocabulary repertoire and learning about real life which helps them linguistically, pedagogically, and above all personally during their life in and out of the university. Annotated texts, pictures and film will be used through technological aids to show how the class was conducted and how the students’ interacted with the novels assigned. Implications for teaching reading in the classroom are made. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=language" title="language">language</a>, <a href="https://publications.waset.org/abstracts/search?q=literature" title=" literature"> literature</a>, <a href="https://publications.waset.org/abstracts/search?q=novels" title=" novels"> novels</a>, <a href="https://publications.waset.org/abstracts/search?q=reading" title=" reading"> reading</a>, <a href="https://publications.waset.org/abstracts/search?q=university%20teaching" title=" university teaching "> university teaching </a> </p> <a href="https://publications.waset.org/abstracts/31176/students-reading-and-viewing-the-american-novel-in-a-university-eflesl-context-a-picture-of-real-life" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31176.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">13</span> Mechanical Soil: Effects of the Passage of Tractors on Agricultural Land</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anis%20Eloud">Anis Eloud</a>, <a href="https://publications.waset.org/abstracts/search?q=Ben%20Salah%20Nahla"> Ben Salah Nahla</a>, <a href="https://publications.waset.org/abstracts/search?q=Sayed%20Chehaibi"> Sayed Chehaibi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to improve and develop the Tunisian agriculture, the government has encouraged the introduction of modern technologies and has also promoted the adoption of innovative practices cultures. Indeed, the extensive use of mechanization can increase crop productivity but its inadequate application also has a negative impact on the ground caused by the phenomenon of compaction. Which will cause the loss of soil fertility and increased production costs. This problem is accentuated with increase the stress on contact wheel / ground. For this reason, the objective of this study is to simulate the footprint of the ground contact / tire two types of tractor after their passage. The method of this work is based on a simulation including passages from two different tractors on soil with similar characteristics. Simulation parameters were based on the choice of two tractors masses of 6500 kg and 4400 kg of soil and sandy loam in nature. The analysis was performed using specific software. The main results showed that the heaviest tractor caused a constraint wheel / rear floor exceeding 100 kPa. For cons, the second tractor has caused stress wheel / rear floor of 50 kPa. The comparison of the two results showed that 6500 kg tractor made a serious and excessive compaction which generated a negative impact on soil quality and crop yields. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=compaction" title="compaction">compaction</a>, <a href="https://publications.waset.org/abstracts/search?q=soil" title=" soil"> soil</a>, <a href="https://publications.waset.org/abstracts/search?q=resistance%20to%20penetration" title=" resistance to penetration"> resistance to penetration</a>, <a href="https://publications.waset.org/abstracts/search?q=crop%20yields" title=" crop yields"> crop yields</a> </p> <a href="https://publications.waset.org/abstracts/19210/mechanical-soil-effects-of-the-passage-of-tractors-on-agricultural-land" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19210.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">433</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> Empirical Roughness Progression Models of Heavy Duty Rural Pavements</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nahla%20H.%20Alaswadko">Nahla H. Alaswadko</a>, <a href="https://publications.waset.org/abstracts/search?q=Rayya%20A.%20Hassan"> Rayya A. Hassan</a>, <a href="https://publications.waset.org/abstracts/search?q=Bayar%20N.%20Mohammed"> Bayar N. Mohammed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Empirical deterministic models have been developed to predict roughness progression of heavy duty spray sealed pavements for a dataset representing rural arterial roads. The dataset provides a good representation of the relevant network and covers a wide range of operating and environmental conditions. A sample with a large size of historical time series data for many pavement sections has been collected and prepared for use in multilevel regression analysis. The modelling parameters include road roughness as performance parameter and traffic loading, time, initial pavement strength, reactivity level of subgrade soil, climate condition, and condition of drainage system as predictor parameters. The purpose of this paper is to report the approaches adopted for models development and validation. The study presents multilevel models that can account for the correlation among time series data of the same section and to capture the effect of unobserved variables. Study results show that the models fit the data very well. The contribution and significance of relevant influencing factors in predicting roughness progression are presented and explained. The paper concludes that the analysis approach used for developing the models confirmed their accuracy and reliability by well-fitting to the validation data. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=roughness%20progression" title="roughness progression">roughness progression</a>, <a href="https://publications.waset.org/abstracts/search?q=empirical%20model" title=" empirical model"> empirical model</a>, <a href="https://publications.waset.org/abstracts/search?q=pavement%20performance" title=" pavement performance"> pavement performance</a>, <a href="https://publications.waset.org/abstracts/search?q=heavy%20duty%20pavement" title=" heavy duty pavement"> heavy duty pavement</a> </p> <a href="https://publications.waset.org/abstracts/81268/empirical-roughness-progression-models-of-heavy-duty-rural-pavements" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/81268.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">168</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 Integration of ICT in EFL Classroom and Its Impact on Teacher Development</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tayaa%20Karima">Tayaa Karima</a>, <a href="https://publications.waset.org/abstracts/search?q=Bouaziz%20Amina"> Bouaziz Amina</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Today's world is knowledge-based; everything we do is somehow connected with technology which it has a remarkable influence on socio-cultural and economic developments, including educational settings. This type of technology is supported in many teaching/learning setting where the medium of instruction is through computer technology, and particularly involving digital technologies. There has been much debate over the use of computers and the internet in foreign language teaching for more than two decades. Various studies highlights that the integration of Information Communications Technology (ICT) in foreign language teaching will have positive effects on both the teachers and students to help them be aware of the modernized world and meet the current demands of the globalised world. Information and communication technology has been gradually integrated in foreign learning environment as a platform for providing learners with learning opportunities. Thus, the impact of ICT on language teaching and learning has been acknowledged globally, this is because of the fundamental role that it plays in the enhancement of teaching and learning quality, modify the pedagogical practice, and motivate learners. Due to ICT related developments, many Maghreb countries regard ICT as a tool for changes and innovations in education. Therefore, the ministry of education attempted to set up computer laboratories and provide internet connection in the schools. Investment in ICT for educational innovations and improvement purposes has been continuing the need of teacher who will employ it in the classroom as vital role of the curriculum. ICT does not have an educational value in itself, but it becomes precious when teachers use it in learning and teaching process. This paper examines the impacts of ICT on teacher development rather than on teaching quality and highlights some challenges facing using ICT in the language learning/teaching. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=information%20communications%20technology%20%28ICT%29" title="information communications technology (ICT)">information communications technology (ICT)</a>, <a href="https://publications.waset.org/abstracts/search?q=integration" title=" integration"> integration</a>, <a href="https://publications.waset.org/abstracts/search?q=foreign%20language%20teaching" title=" foreign language teaching"> foreign language teaching</a>, <a href="https://publications.waset.org/abstracts/search?q=teacher%20development" title=" teacher development"> teacher development</a>, <a href="https://publications.waset.org/abstracts/search?q=learning%20opportunity" title=" learning opportunity"> learning opportunity</a> </p> <a href="https://publications.waset.org/abstracts/43919/the-integration-of-ict-in-efl-classroom-and-its-impact-on-teacher-development" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43919.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">388</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> Agriculture Water Quality Evaluation in Minig Basin </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ben%20Salah%20Nahla">Ben Salah Nahla </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The problem of water in Tunisia affects the quality and quantity. Tunisia is in a situation of water shortage. It was estimated that 4.6 Mm3/an. Moreover, the quality of water in Tunisia is also mediocre. In fact, 50% of the water has a high salinity (> 1.5g/l). There are several parameters which affect water quality such as sodium, fluoride. An excess of this parameter may induce some human health. Furthermore, the mining basin area has a problem of industrial waste. This problem may affect the water quality of the groundwater. Therefore, the purpose of this work is to assess the water quality in Basin Mining and the impact of fluorine. For this research, some water samples were done in the field and specific water analysis was implemented in the laboratory. Sampling is carried out on eight drilling in the area of the mining region. In the following, we will look at water view composition, physical and chemical quality. A physical-chemical analysis of water from a survey of the Mining area of Tunisia was performed and showed an excess for the following items: fluorine, sodium, sulfate. So many chemicals may be present in water. However, only a small number of them immediately concern in terms of health in all circumstances. Fluorine (F) is one particular chemical that is considered both necessary for the human body, but an excess of the rate of this chemical causes serious diseases. Sodium fluoride and sodium silicofluoride are more soluble and may spread in animals and plants where their toxicity largest organizations. The more complex particles such as cryolite and fluorite, almost insoluble, are more stable and less toxic. Thereafter, we will study the problem of excess fluorine in the water. The latter intended for human consumption must always comply with the limits for microbiological quality parameters and physical-chemical parameters defined by European standards (1.5 mg/l) and Tunisian (2 mg/l). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=water" title="water">water</a>, <a href="https://publications.waset.org/abstracts/search?q=minier%20basin" title=" minier basin"> minier basin</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorine" title=" fluorine"> fluorine</a>, <a href="https://publications.waset.org/abstracts/search?q=silicofluoride" title=" silicofluoride"> silicofluoride</a> </p> <a href="https://publications.waset.org/abstracts/19833/agriculture-water-quality-evaluation-in-minig-basin" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19833.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">582</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> Larvicidal Activity of Azadirachtin and Essential Oils from Thymus capitatus against Prays oleae Bern (Lepidoptera, Yponomeutidae) </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Imen%20Blibech">Imen Blibech</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohiedine%20Ksantini"> Mohiedine Ksantini</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Bouaziz"> Mohamed Bouaziz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Prays oleae is a major insect of olive in the Mediterranean Region. In an effort to find effective and affordable ways of controlling this pest, larvicidal activity of essential oils from Tunisian Thymus capitatus were analyzed in comparison to Azadirachtin, a biologically active compound insecticide. The essential oils were extracted by hydrodistillation, and their chemical composition was determined by gas liquid-chromatography coupled with mass spectroscopy. The main components of chemical components were oxygenated monoterpenes (60.24%). The most abundant oxygenated monoterpenes were carvacrol (54.11%). Monoterpenes hydrocarbons were much more abundant and dominated by the o-cymene (16.68%). Both active compounds of Azadirachtin and Thymus capitatus oil extracts exhibited significant larvicidal activity against P. oleae with LC50 values 81.30 ppm and 52.49 ppm respectively. Dose-response relationships were established with almost 100% mortality when using the highest dose 100 ppm of T. capitatus oil extracts and 80 ppm of Azadirachtin. At the lowest dose (10 ppm), T. capitatus oil extracts and Azadirachtin caused 60% and 76% larval mortality in 48 hours respectively. The larval mortality rate greatly decreased with increases of the dilution of both oil extract compounds. Larval development duration appeared to be prolonged to about 12 days for larvae feeding on control diet. The maximum antifeedant activity was shown by both T. capitatus oil extract and Azadirachtin at LC90 values (47.5 and 50.1 ppm respectively). Tunisian T. capitatus oil extract used at low concentrations could be considered as eco-friendly promising insecticide similar to Azadirachtin that has significant potential for the biological control of P. oleae. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thymus%20capitatus" title="Thymus capitatus">Thymus capitatus</a>, <a href="https://publications.waset.org/abstracts/search?q=chemical%20composition" title=" chemical composition"> chemical composition</a>, <a href="https://publications.waset.org/abstracts/search?q=azadirachtin" title=" azadirachtin"> azadirachtin</a>, <a href="https://publications.waset.org/abstracts/search?q=larvicidal%20effects" title=" larvicidal effects"> larvicidal effects</a>, <a href="https://publications.waset.org/abstracts/search?q=antifeedant%20activity" title=" antifeedant activity"> antifeedant activity</a>, <a href="https://publications.waset.org/abstracts/search?q=Prays%20oleae" title=" Prays oleae"> Prays oleae</a> </p> <a href="https://publications.waset.org/abstracts/66890/larvicidal-activity-of-azadirachtin-and-essential-oils-from-thymus-capitatus-against-prays-oleae-bern-lepidoptera-yponomeutidae" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/66890.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">199</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> Cerebrum Maturity Damage Induced by Fluoride in Suckling Mice</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hanen%20Bouaziz">Hanen Bouaziz</a>, <a href="https://publications.waset.org/abstracts/search?q=Fran%C3%A7oise%20Croute"> Françoise Croute</a>, <a href="https://publications.waset.org/abstracts/search?q=Najiba%20Zeghal"> Najiba Zeghal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to investigate the toxic effects of fluoride on cerebrum maturity of suckling mice, we treated adult female mice of Swiss Albinos strain by 500 ppm NaF in their drinking water from the 15th day of pregnancy until the day 14 after delivery. All mice were sacrificed on day 14 after parturition. During treatment, levels of thiobarbituric acid reactive substances, the marker of lipid peroxidation extend, increased, while the activities of the antioxidant enzymes such as glutathione peroxidase, superoxide dismutase and catalase and the level of glutathione decreased significantly in cerebellum compared with those of the control group. These results suggested that fluoride enhanced oxidative stress, thereby disturbing the antioxidant defense of nursing pups. In addition, acetylcholinesterase activity in cerebellum was inhibited after treatment with fluoride. In cerebellum of mice, migration of neurons from the external granular layer to the internal granular layer occurred postnatally. Key guidance signals to these migrating neurons were provided by laminin, an extracellular matrix protein fixed to the surface of astrocytes. In the present study, we examined the expression and distribution of laminin in cerebellum of 14-day-old mice. Immunoreactive laminin was disappeared by postnatal day 14 in cerebellum parenchyma of control pups and was restricted to vasculature despite the continued presence of granular cells in the external granular layer. In contrast, in cerebellum of NaF treated pups, laminin was deposited in organised punctuate clusters in the molecular layer. These data indicated that the disruption of laminin distribution might play a major role in the profound derangement of neuronal migration observed in cerebellum of NaF treated pups. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acetylcholinesterase%20activity" title="acetylcholinesterase activity">acetylcholinesterase activity</a>, <a href="https://publications.waset.org/abstracts/search?q=cerebellum" title=" cerebellum"> cerebellum</a>, <a href="https://publications.waset.org/abstracts/search?q=laminin" title=" laminin"> laminin</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=suckling%20mice" title=" suckling mice "> suckling mice </a> </p> <a href="https://publications.waset.org/abstracts/21355/cerebrum-maturity-damage-induced-by-fluoride-in-suckling-mice" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21355.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">396</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">7</span> Hyparrhenia hirta: A Potential Protective Agent against DNA Damage and Liver Toxicity of Sodium Nitrate in Adult Rats</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hanen%20Bouaziz-Ketata">Hanen Bouaziz-Ketata</a>, <a href="https://publications.waset.org/abstracts/search?q=Ghada%20Ben%20Salah"> Ghada Ben Salah</a>, <a href="https://publications.waset.org/abstracts/search?q=Hichem%20Ben%20Salah"> Hichem Ben Salah</a>, <a href="https://publications.waset.org/abstracts/search?q=Kamel%20Jamoussi"> Kamel Jamoussi</a>, <a href="https://publications.waset.org/abstracts/search?q=Najiba%20Zeghal"> Najiba Zeghal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study investigated the protective role of Hyparrhenia hirta on nitrate-induced liver damage. Experiments were carried out on adult rats divided into 3 groups, a control group and two treated groups. NaNO3 was administered daily by oral gavage at a dose of 400 mg/kg bw in treated groups either alone or coadministered with Hyparrhenia hirta methanolic extract via drinking water at a dose of 200 mg/kg bw for 50 days. Liver toxicity induced by NaNO3 was characterized by higher serum levels of glucose, total cholesterol and triglyceride and lower serum total protein than those of controls. Transaminases and lactate deshydrogenase activities in serum were elevated indicating hepatic cells’ damage after treatment with NaNO3. The hyperbilirubinemia and the increased serum gamma glutamyl transferase activities suggested the presence of cholestasis in NaNO3 exposed rats. In parallel, NaNO3 caused oxidant/antioxidant imbalance in the liver as reﬂected by the increased lipid peroxidation, the decreased total glutathione content and superoxide dismutase, catalase and glutathione peroxidase activities. Nitrate caused also a significant induction of DNA fragmentation as evidenced by the presence of a smear without ladder formation on agarose gel. Hyparrhenia hirta supplementation showed an improvement of all parameters cited above. We conclude that the present work provides ethnopharmacological relevance of Hyparrhenia hirta against the toxic effect of nitrate, suggesting its role as a potential antioxidant. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hyparrhenia%20hirta" title="Hyparrhenia hirta">Hyparrhenia hirta</a>, <a href="https://publications.waset.org/abstracts/search?q=liver" title=" liver"> liver</a>, <a href="https://publications.waset.org/abstracts/search?q=nitrate%20toxicity" title=" nitrate toxicity"> nitrate toxicity</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=rat" title=" rat"> rat</a> </p> <a href="https://publications.waset.org/abstracts/21161/hyparrhenia-hirta-a-potential-protective-agent-against-dna-damage-and-liver-toxicity-of-sodium-nitrate-in-adult-rats" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21161.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">545</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Nahla%20Bouaziz&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Nahla%20Bouaziz&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About 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