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<!DOCTYPE html> <html lang="en" dir="ltr"> <head>  <script async src="https://www.googletagmanager.com/gtag/js?id=G-P63WKM1TM1"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-P63WKM1TM1'); </script>  <script type="text/javascript" > (function(m,e,t,r,i,k,a){m[i]=m[i]||function(){(m[i].a=m[i].a||[]).push(arguments)}; m[i].l=1*new Date(); for (var j = 0; j < document.scripts.length; j++) {if (document.scripts[j].src === r) { return; }} k=e.createElement(t),a=e.getElementsByTagName(t)[0],k.async=1,k.src=r,a.parentNode.insertBefore(k,a)}) (window, document, "script", "https://mc.yandex.ru/metrika/tag.js", "ym"); ym(55165297, "init", { clickmap:false, trackLinks:true, accurateTrackBounce:true, webvisor:false }); </script> <noscript><div><img src="https://mc.yandex.ru/watch/55165297" style="position:absolute; left:-9999px;" alt="" /></div></noscript>    <title>Search results for: Tarek M. Elsayed</title> <meta name="description" content="Search results for: Tarek M. Elsayed"> <meta name="keywords" content="Tarek M. Elsayed"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="Tarek M. 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Elsayed"> <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> 179</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Tarek M. Elsayed</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">59</span> Impact of Applying Bag House Filter Technology in Cement Industry on Ambient Air Quality - Case Study: Alexandria Cement Company </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haggag%20H.%20Mohamed">Haggag H. Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ghatass%20F.%20Zekry"> Ghatass F. Zekry</a>, <a href="https://publications.waset.org/abstracts/search?q=Shalaby%20A.%20Elsayed"> Shalaby A. Elsayed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Most sources of air pollution in Egypt are of anthropogenic origin. Alexandria Governorate is located at north of Egypt. The main contributing sectors of air pollution in Alexandria are industry, transportation and area source due to human activities. Alexandria includes more than 40% of the industrial activities in Egypt. Cement manufacture contributes a significant amount to the particulate pollution load. Alexandria Portland Cement Company (APCC) surrounding was selected to be the study area. APCC main kiln stack Total Suspended Particulate (TSP) continuous monitoring data was collected for assessment of dust emission control technology. Electro Static Precipitator (ESP) was fixed on the cement kiln since 2002. The collected data of TSP for first quarter of 2012 was compared to that one in first quarter of 2013 after installation of new bag house filter. In the present study, based on these monitoring data and metrological data a detailed air dispersion modeling investigation was carried out using the Industrial Source Complex Short Term model (ISC3-ST) to find out the impact of applying new bag house filter control technology on the neighborhood ambient air quality. The model results show a drastic reduction of the ambient TSP hourly average concentration from 44.94μg/m3 to 5.78μg/m3 which assures the huge positive impact on the ambient air quality by applying bag house filter technology on APCC cement kiln <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=air%20pollution%20modeling" title="air pollution modeling">air pollution modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=ambient%20air%20quality" title=" ambient air quality"> ambient air quality</a>, <a href="https://publications.waset.org/abstracts/search?q=baghouse%20filter" title=" baghouse filter"> baghouse filter</a>, <a href="https://publications.waset.org/abstracts/search?q=cement%20industry" title=" cement industry"> cement industry</a> </p> <a href="https://publications.waset.org/abstracts/30754/impact-of-applying-bag-house-filter-technology-in-cement-industry-on-ambient-air-quality-case-study-alexandria-cement-company" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30754.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">269</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">58</span> Multi-Objective Optimization and Effect of Surface Conditions on Fatigue Performance of Burnished Components Made of AISI 52100 Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ouahiba%20Taamallah">Ouahiba Taamallah</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Litim"> Tarek Litim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study deals with the burnishing effect of AISI 52100 steel and parameters influence (Py, i and f on surface integrity. The results show that the optimal effects are closely related to the treatment parameters. With a 92% improvement in roughness, SB can be defined as a finishing operation within the machining range. Due to 85% gain in consolidation rate, this treatment constitutes an efficient process for work-hardening of material. In addition, a statistical study based on regression and Taguchi's design has made it possible to develop mathematical models to predict output responses according to the studied burnishing parameters. Response Surface Methodology RSM showed a simultaneous influence of the burnishing parameters and to observe the optimal parameters of the treatment. ANOVA Analysis of results led to validate the prediction model with a determination coefficient R2=94.60% and R2=93.41% for surface roughness and micro-hardness, respectively. Furthermore, a multi-objective optimization allowed to identify a regime characterized by P=20 Kgf, i=5 passes and f=0.08 mm.rev-1, which favors minimum surface roughness and a maximum of micro-hardness. The result was validated by a composite desirability D_i=1 for both surface roughness and microhardness, respectively. Applying optimal parameters, burnishing showed its beneficial effects in fatigue resistance, especially for imposed loading in the low cycle fatigue of the material where the lifespan increased by 90%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AISI%2052100%20steel" title="AISI 52100 steel">AISI 52100 steel</a>, <a href="https://publications.waset.org/abstracts/search?q=burnishing" title=" burnishing"> burnishing</a>, <a href="https://publications.waset.org/abstracts/search?q=Taguchi" title=" Taguchi"> Taguchi</a>, <a href="https://publications.waset.org/abstracts/search?q=fatigue" title=" fatigue"> fatigue</a> </p> <a href="https://publications.waset.org/abstracts/140752/multi-objective-optimization-and-effect-of-surface-conditions-on-fatigue-performance-of-burnished-components-made-of-aisi-52100-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140752.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">188</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">57</span> The Use of Self-Determination Theory to Assess the Opportunities and Challenges for Blended E-Learning in Egypt: An Analysis of the Motivations of Logistics Lecturers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aisha%20Tarek%20Noour">Aisha Tarek Noour</a>, <a href="https://publications.waset.org/abstracts/search?q=Nick%20Hubbard"> Nick Hubbard</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Blended e-Learning (BL) is proving to be an effective pedagogical tool in many areas of business and management education, but there remains a number of barriers to overcome before its implementation. This paper seeks to analyse the views of lecturers towards BL according to Self-Determination Theory (SDT), and identifies the opportunities and challenges for using BL in Logistics Education in an Egyptian higher education establishment. SDT is approached from a different perspective and the relationship between intrinsic motivation (IM), extrinsic motivation (EM), and amotivation (AM) is analysed and related to the opportunities and challenges of the BL method. The case study methodology comprises of a series of interviews with lecturers employed at three Colleges of International Transport and Logistics (CITLs) at the Arab Academy for Science, Technology, Maritime and Transport (AAST&MT) in Egypt. A structured face-to-face interview was undertaken with 61 interviewees across all faculty positions: Deans, Associate Professors, Assistant Professor, Department Heads, Part-time instructors, Teaching Assistants, and Graduate Teaching Assistants. The findings were based on "content analysis" of the interview transcripts and use of the NVivo10 software program. The research contributes to the application of SDT within the field of BL through an analysis of the views of lecturers towards the opportunities and challenges that BL offers to logistics educators in Egypt. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=intrinsic%20motivation" title="intrinsic motivation">intrinsic motivation</a>, <a href="https://publications.waset.org/abstracts/search?q=extrinsic%20motivation" title=" extrinsic motivation"> extrinsic motivation</a>, <a href="https://publications.waset.org/abstracts/search?q=amotivation" title=" amotivation"> amotivation</a>, <a href="https://publications.waset.org/abstracts/search?q=autonomy" title=" autonomy"> autonomy</a>, <a href="https://publications.waset.org/abstracts/search?q=competence" title=" competence"> competence</a>, <a href="https://publications.waset.org/abstracts/search?q=relatedness" title=" relatedness"> relatedness</a>, <a href="https://publications.waset.org/abstracts/search?q=self-determination%20theory%20and%20blended%20e-learning" title=" self-determination theory and blended e-learning"> self-determination theory and blended e-learning</a> </p> <a href="https://publications.waset.org/abstracts/24220/the-use-of-self-determination-theory-to-assess-the-opportunities-and-challenges-for-blended-e-learning-in-egypt-an-analysis-of-the-motivations-of-logistics-lecturers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24220.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">440</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">56</span> The MTHFR C677T Polymorphism Screening: A Challenge in Recurrent Pregnancy Loss</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rim%20Frikha">Rim Frikha</a>, <a href="https://publications.waset.org/abstracts/search?q=Nouha%20Bouayed"> Nouha Bouayed</a>, <a href="https://publications.waset.org/abstracts/search?q=Afifa%20Sellami"> Afifa Sellami</a>, <a href="https://publications.waset.org/abstracts/search?q=Nozha%20Chakroun"> Nozha Chakroun</a>, <a href="https://publications.waset.org/abstracts/search?q=Salima%20Daoud"> Salima Daoud</a>, <a href="https://publications.waset.org/abstracts/search?q=Leila%20Keskes"> Leila Keskes</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Rebai"> Tarek Rebai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Recurrent pregnancy loss (RPL) defined as two or more pregnancy losses, is a serious clinical problem. Methylene-tetrahydro-folate-reductase (MTHFR) polymorphisms, commonly the variant C677T is recognized as an inherited thrombophilia which might affect embryonic development and pregnancy success and cause pregnancy complications as RPL. Material and Methods DNA was extracted from peripheral blood samples and PCR-RFLP was performed for the molecular diagnosis of the C677T MTHFR polymorphism among 70 patients (35 couples) with more than 2 fetal losses. Aims and Objective: The aim of this study is to determine the frequency of MTHFR C677T among Tunisian couples with RPL and to critically analyze the available literature on the importance of MTHFR polymorphism testing in the management of RPL. Result and comments: No C677T mutation was detected in the carriers of RPL. This result would be related to sample size and to different criteria (number of abortion), - The association between MTHFR polymorphisms and pregnancy complications has been reported but with controversial results. - A lack of evidence for MTHFR polymorphism testing previously recommended by ACMG (American College of Medical medicine). Our study highlights the importance of screening of MTHFR polymorphism since the real impact of such thrombotic molecular defect on the pregnancy outcome is evident. - Folic supplementation of these patients during pregnancy can prevent such complications and lead to a successful pregnancy outcome. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=methylenetetrahydrofolate%20reductase" title="methylenetetrahydrofolate reductase">methylenetetrahydrofolate reductase</a>, <a href="https://publications.waset.org/abstracts/search?q=C677T" title=" C677T"> C677T</a>, <a href="https://publications.waset.org/abstracts/search?q=recurrent%20pregnancy%20loss" title=" recurrent pregnancy loss"> recurrent pregnancy loss</a>, <a href="https://publications.waset.org/abstracts/search?q=genetic%20testing" title=" genetic testing"> genetic testing</a> </p> <a href="https://publications.waset.org/abstracts/44932/the-mthfr-c677t-polymorphism-screening-a-challenge-in-recurrent-pregnancy-loss" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44932.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">307</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">55</span> Study of Superconducting Patch Printed on Electric-Magnetic Substrates Materials</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fortaki%20Tarek">Fortaki Tarek</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Bedra"> S. Bedra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the effects of both uniaxial anisotropy in the substrate and high Tc superconducting patch on the resonant frequency, half-power bandwidth, and radiation patterns are investigated using an electric field integral equation and the spectral domain Green’s function. The analysis has been based on a full electromagnetic wave model with London’s equations and the Gorter-Casimir two-fluid model has been improved to investigate the resonant and radiation characteristics of high Tc superconducting rectangular microstrip patch in the case where the patch is printed on electric-magnetic uniaxially anisotropic substrate materials. The stationary phase technique has been used for computing the radiation electric field. The obtained results demonstrate a considerable improvement in the half-power bandwidth, of the rectangular microstrip patch, by using a superconductor patch instead of a perfect conductor one. Further results show that high Tc superconducting rectangular microstrip patch on the uniaxial substrate with properly selected electric and magnetic anisotropy ratios is more advantageous than the one on the isotropic substrate by exhibiting wider bandwidth and radiation characteristic. This behavior agrees with that discovered experimentally for superconducting patches on isotropic substrates. The calculated results have been compared with measured one available in the literature and excellent agreement has been found. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=high%20Tc%20superconducting%20microstrip%20patch" title="high Tc superconducting microstrip patch">high Tc superconducting microstrip patch</a>, <a href="https://publications.waset.org/abstracts/search?q=electric-magnetic%20anisotropic%20substrate" title=" electric-magnetic anisotropic substrate"> electric-magnetic anisotropic substrate</a>, <a href="https://publications.waset.org/abstracts/search?q=Galerkin%20method" title=" Galerkin method"> Galerkin method</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20complex%20impedance%20with%20boundary%20conditions" title=" surface complex impedance with boundary conditions"> surface complex impedance with boundary conditions</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20patterns" title=" radiation patterns"> radiation patterns</a> </p> <a href="https://publications.waset.org/abstracts/50630/study-of-superconducting-patch-printed-on-electric-magnetic-substrates-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50630.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">444</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">54</span> Treatment and Conservation of an Antique Stone Stela by Nano Calcium Hydroxide with Nano Silica in Egyptian Museum of Cairo</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elhussein%20Ahmed%20Elsayed">Elhussein Ahmed Elsayed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An ancient limestone stela dating back to the epoch of the middle kingdom and displayed in the exhibition hall of the middle kingdom, it was discovered in Lisht in Giza, registered with No. 3045 and as a result of its display in an inappropriate display as a result of the use of natural lighting in the display, Represented in sunlight through windows opened day and night. The alternation of these daily changes between the temperature degrees of night and day, both daily and seasonally, causes the expansion and contraction of the rocks and then weakens their cohesion, causing fragmentation. This is indeed the current situation of this stela displayed in the hall, in addition to the damage and fading of colors, as well as the use of a high-viscosity restoration material in the consolidation that led to the attraction of dust and dirt and its adhesion to the surface. The color faded as a result of the lack of lighting control inside the exhibition hall, the remnants of the existing colors were blurred as a result of applying a consolidation material with a high viscosity, which led to the attraction of dust and dirt, and then blurring the colors on the inscription. Examinations and analyzes were carried out on the block, and the results of the examination with a polarized microscope showed that it is of primitive limestone, which contains fossils and microorganisms, which helps to damage. The analysis using the Raman device also showed that the high-viscosity material used in restoration in the past is Paralloid B72. The stone stela was consolidated by using two materials; Nano calcium hydroxide with Nano silica in the form of (Core-shell) at a concentration of 10% and it was applied using the brush. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Egyptian%20museum" title="Egyptian museum">Egyptian museum</a>, <a href="https://publications.waset.org/abstracts/search?q=stone%20stela" title=" stone stela"> stone stela</a>, <a href="https://publications.waset.org/abstracts/search?q=treatment" title=" treatment"> treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20materials" title=" nano materials"> nano materials</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20silica" title=" nano silica"> nano silica</a> </p> <a href="https://publications.waset.org/abstracts/169717/treatment-and-conservation-of-an-antique-stone-stela-by-nano-calcium-hydroxide-with-nano-silica-in-egyptian-museum-of-cairo" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169717.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">76</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">53</span> Influence of Different Sports on the Taste Perception and Acceptability of a Commercial Sports Drink among University Student-Athletes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jana%20Daher">Jana Daher</a>, <a href="https://publications.waset.org/abstracts/search?q=Ammar%20Olabi"> Ammar Olabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Elie-Jacques%20Fares"> Elie-Jacques Fares</a>, <a href="https://publications.waset.org/abstracts/search?q=Samer%20Kharrroubi"> Samer Kharrroubi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Gherbal"> Tarek Gherbal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It has been previously suggested that the perception and acceptability of fluids significantly varies between exercise and non-exercise situations. The study investigates the influence of different types of sports on the taste perception and acceptability of a commercial sports drink. A sample of Gatorade – red orange flavor was evaluated pre and post exercise by 34 male university athletes (20 weightlifters, 14 runners) recruited from the American University of Beirut. Urine samples were collected from the participants to test for hydration. Sensory testing examined the change in the intensity of sweetness, saltiness, sourness, and the thirst-quenching ability of the drink as well as its acceptability with respect to the type of sport practiced. Results indicated that the acceptability of the drink increased as the hydration status of the athletes decreased (p<0.01). No significant change was found in the perception of the sensory attributes between exercise and non-exercise conditions. However, there were significant differences between the two sports groups in the ratings of the thirst-quenching ability of the drink where runners’ ratings increased after exercise while weightlifters’ ratings decreased after exercise (p<0.01). These findings suggest that exercise has a larger effect on the acceptability and overall liking of the beverage compared to other sensory attributes. An enhanced liking of the beverage is key for optimal replenishment of lost fluids and electrolytes after exercise. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hedonic" title="hedonic">hedonic</a>, <a href="https://publications.waset.org/abstracts/search?q=liking" title=" liking"> liking</a>, <a href="https://publications.waset.org/abstracts/search?q=sweetness" title=" sweetness"> sweetness</a>, <a href="https://publications.waset.org/abstracts/search?q=thirst-quenching" title=" thirst-quenching"> thirst-quenching</a> </p> <a href="https://publications.waset.org/abstracts/137791/influence-of-different-sports-on-the-taste-perception-and-acceptability-of-a-commercial-sports-drink-among-university-student-athletes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/137791.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">133</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">52</span> Application of Arbuscular Mycorrhizal Fungi as Biologically Based Strategy for Mitigation of Adverse Impact of Salt Stress on Wheat</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abeer%20Hashem">Abeer Hashem</a>, <a href="https://publications.waset.org/abstracts/search?q=Khalid%20F.%20Almutairi"> Khalid F. Almutairi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ulkar%20Ibrahimova"> Ulkar Ibrahimova</a>, <a href="https://publications.waset.org/abstracts/search?q=Elsayed%20Fathi%20Abdallah"> Elsayed Fathi Abdallah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Salinity poses a significant challenge to wheat production, necessitating the exploration of strategies to mitigate its adverse effects. The present investigation aims to study the impact of arbuscular mycorrhizal fungi (AMF) application to improve plant tolerance in terms of growth, carbohydrate, photosynthetic characteristics, and antioxidant enzyme activities under salt stress conditions. So, a randomized complete block design with five replications was employed comprising various treatments of AMF application under salinity stress (200mM), and control samples were used for each treatment. The obtained results demonstrated significantly that AMF used in this study showed beneficial impacts in all parameters used as sensitive monitor for relation of plant-salt microbe interaction. The root colonization by AMF showed the highest plant growth criteria, relative water content, soluble sugar, starch, and total non-structural carbohydrates under both control and salinity stress conditions. Moreover, the application of AMF-treated plants showed the highest soluble protein concentration and activity in leaves and antioxidant enzymes (catalase, superoxide dismutase, guaiacol peroxidase). These findings highlight the potential impact of AMF application as a biologically based strategy to manage the mitigation of salt stress on wheat, which increases the availability of many salt marsh habitats for sustainable agriculture of such strategy crops. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=arbuscular%20mycorrhizal%20fungi" title="arbuscular mycorrhizal fungi">arbuscular mycorrhizal fungi</a>, <a href="https://publications.waset.org/abstracts/search?q=salt%20stress" title=" salt stress"> salt stress</a>, <a href="https://publications.waset.org/abstracts/search?q=plant%20growth%20criteria" title=" plant growth criteria"> plant growth criteria</a>, <a href="https://publications.waset.org/abstracts/search?q=soluble%20protein" title=" soluble protein"> soluble protein</a>, <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20enzymes" title=" antioxidant enzymes"> antioxidant enzymes</a>, <a href="https://publications.waset.org/abstracts/search?q=wheat%20plant" title=" wheat plant"> wheat plant</a> </p> <a href="https://publications.waset.org/abstracts/186129/application-of-arbuscular-mycorrhizal-fungi-as-biologically-based-strategy-for-mitigation-of-adverse-impact-of-salt-stress-on-wheat" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186129.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">48</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">51</span> Pushover Analysis of Reinforced Concrete Buildings Using Full Jacket Technics: A Case Study on an Existing Old Building in Madinah </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20M.%20Alguhane">Tarek M. Alguhane</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayman%20H.%20Khalil"> Ayman H. Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20N.%20Fayed"> M. N. Fayed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayman%20M.%20Ismail"> Ayman M. Ismail</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The retrofitting of existing buildings to resist the seismic loads is very important to avoid losing lives or financial disasters. The aim at retrofitting processes is increasing total structure strength by increasing stiffness or ductility ratio. In addition, the response modification factors (R) have to satisfy the code requirements for suggested retrofitting types. In this study, two types of jackets are used, i.e. full reinforced concrete jackets and surrounding steel plate jackets. The study is carried out on an existing building in Madinah by performing static pushover analysis before and after retrofitting the columns. The selected model building represents nearly all-typical structure lacks structure built before 30 years ago in Madina City, KSA. The comparison of the results indicates a good enhancement of the structure respect to the applied seismic forces. Also, the response modification factor of the RC building is evaluated for the studied cases before and after retrofitting. The design of all vertical elements (columns) is given. The results show that the design of retrofitted columns satisfied the code's design stress requirements. However, for some retrofitting types, the ductility requirements represented by response modification factor do not satisfy KSA design code (SBC- 301). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=concrete%20jackets" title="concrete jackets">concrete jackets</a>, <a href="https://publications.waset.org/abstracts/search?q=steel%20jackets" title=" steel jackets"> steel jackets</a>, <a href="https://publications.waset.org/abstracts/search?q=RC%20buildings" title=" RC buildings"> RC buildings</a>, <a href="https://publications.waset.org/abstracts/search?q=pushover%20analysis" title=" pushover analysis"> pushover analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=non-Linear%20analysis" title=" non-Linear analysis"> non-Linear analysis</a> </p> <a href="https://publications.waset.org/abstracts/58899/pushover-analysis-of-reinforced-concrete-buildings-using-full-jacket-technics-a-case-study-on-an-existing-old-building-in-madinah" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58899.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">366</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">50</span> Seismic Assessment of an Existing Dual System RC Buildings in Madinah City</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20M.%20Alguhane">Tarek M. Alguhane</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayman%20H.%20Khalil"> Ayman H. Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20N.%20Fayed"> M. N. Fayed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayman%20M.%20Ismail"> Ayman M. Ismail</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A 15-storey RC building, studied in this paper, is representative of modern building type constructed in Madina City in Saudi Arabia before 10 years ago. These buildings are almost consisting of reinforced concrete skeleton, i. e. columns, beams and flat slab as well as shear walls in the stairs and elevator areas arranged in the way to have a resistance system for lateral loads (wind–earthquake loads). In this study, the dynamic properties of the 15-storey RC building were identified using ambient motions recorded at several spatially-distributed locations within each building. After updating the mathematical models for this building with the experimental results, three dimensional pushover analysis (nonlinear static analysis) was carried out using SAP2000 software incorporating inelastic material properties for concrete, infill and steel. The effect of modeling the building with and without infill walls on the performance point as well as capacity and demand spectra due to EQ design spectrum function in Madina area has been investigated. The response modification factor (R) for the 15 storey RC building is evaluated from capacity and demand spectra (ATC-40). The purpose of this analysis is to evaluate the expected performance of structural systems by estimating, strength and deformation demands in design, and comparing these demands to available capacities at the performance levels of interest. The results are summarized and discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=seismic%20assessment" title="seismic assessment">seismic assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=pushover%20analysis" title=" pushover analysis"> pushover analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=ambient%20vibration" title=" ambient vibration"> ambient vibration</a>, <a href="https://publications.waset.org/abstracts/search?q=modal%20update" title=" modal update"> modal update</a> </p> <a href="https://publications.waset.org/abstracts/38004/seismic-assessment-of-an-existing-dual-system-rc-buildings-in-madinah-city" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38004.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">391</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">49</span> Breakthrough Highly-Effective Extraction of Perfluoroctanoic Acid Using Natural Deep Eutectic Solvents</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sana%20Eid">Sana Eid</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20S.%20Darwish"> Ahmad S. Darwish</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Lemaoui"> Tarek Lemaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Maguy%20Abi%20Jaoude"> Maguy Abi Jaoude</a>, <a href="https://publications.waset.org/abstracts/search?q=Fawzi%20Banat"> Fawzi Banat</a>, <a href="https://publications.waset.org/abstracts/search?q=Shadi%20W.%20Hasan"> Shadi W. Hasan</a>, <a href="https://publications.waset.org/abstracts/search?q=Inas%20M.%20AlNashef"> Inas M. AlNashef</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Addressing the growing challenge of per- and polyfluoroalkyl substances (PFAS) pollution in water bodies, this study introduces natural deep eutectic solvents (NADESs) as a pioneering solution for the efficient extraction of perfluorooctanoic acid (PFOA), one of the most persistent and concerning PFAS pollutants. Among the tested NADESs, trioctylphosphine oxide: lauric acid (TOPO:LauA) in a 1:1 molar ratio was distinguished as the most effective, achieving an extraction efficiency of approximately 99.52% at a solvent-to-feed (S:F) ratio of 1:2, room temperature, and neutral pH. This efficiency is achieved within a notably short mixing time of only one min, which is significantly less than the time required by conventional methods, underscoring the potential of TOPO:LauA for rapid and effective PFAS remediation. TOPO:LauA maintained consistent performance across various operational parameters, including a range of initial PFOA concentrations (0.1 ppm to 1000 ppm), temperatures (15 °C to 100 °C), pH values (3 to 9), and S:F ratios (2:3 to 1:7), demonstrating its versatility and robustness. Furthermore, its effectiveness was consistently high over seven consecutive extraction cycles, highlighting TOPO:LauA as a sustainable, environmentally friendly alternative to hazardous organic solvents, with promising applications for reliable, repeatable use in combating persistent water pollutants such as PFOA. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=deep%20eutectic%20solvents" title="deep eutectic solvents">deep eutectic solvents</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20deep%20eutectic%20solvents" title=" natural deep eutectic solvents"> natural deep eutectic solvents</a>, <a href="https://publications.waset.org/abstracts/search?q=perfluorooctanoic%20acid" title=" perfluorooctanoic acid"> perfluorooctanoic acid</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20remediation" title=" water remediation"> water remediation</a> </p> <a href="https://publications.waset.org/abstracts/177812/breakthrough-highly-effective-extraction-of-perfluoroctanoic-acid-using-natural-deep-eutectic-solvents" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/177812.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">61</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">48</span> The Predictive Value of Micro Rna 451 on the Outcome of Imatinib Treatment in Chronic Myeloid Leukemia Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nehal%20Adel%20Khalil">Nehal Adel Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=Amel%20Foad%20Ketat"> Amel Foad Ketat</a>, <a href="https://publications.waset.org/abstracts/search?q=Fairouz%20Elsayed%20Mohamed%20Ali"> Fairouz Elsayed Mohamed Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Nahla%20Abdelmoneim%20Hamid"> Nahla Abdelmoneim Hamid</a>, <a href="https://publications.waset.org/abstracts/search?q=Hazem%20Farag%20Manaa"> Hazem Farag Manaa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Chronic myeloid leukemia (CML) represents 15% of adult leukemias. Imatinib Mesylate (IM) is the gold standard treatment for new cases of CML. Treatment with IM results in improvement of the majority of cases. However, about 25% of cases may develop resistance. Sensitive and specific early predictors of IM resistance in CML patients have not been established to date. Aim: To investigate the value of miR-451 in CML as an early predictor for IM resistance in Egyptian CML patients. Methods: The study employed Real time Polymerase Reaction (qPCR) technique to investigate the leucocytic expression of miR-451 in fifteen newly diagnosed CML patients (group I), fifteen IM responder CML patients (group II), fifteen IM resistant CML patients (group III) and fifteen healthy subjects of matched age and sex as a control group (group IV). The response to IM was defined as < 10% BCR-ABL transcript level after 3 months of therapy. The following parameters were assessed in subjects of all the studied groups: 1- Complete blood count (CBC). 2- Measurement of plasma level of miRNA 451 using real-time Polymerase Chain Reaction (qPCR). 3- Detection of BCR-ABL gene mutation in CML using qPCR. Results: The present study revealed that miR-451 was significantly down-regulated in leucocytes of newly diagnosed CML patients as compared to healthy subjects. IM responder CML patients showed an up-regulation of miR- 451 compared with IM resistant CML patients. Conclusion: According to the data from the present study, it can be concluded that leucocytic miR- 451 expression is a useful additional follow-up marker for the response to IM and a promising prognostic biomarker for CML. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chronic%20myeloid%20leukemia" title="chronic myeloid leukemia">chronic myeloid leukemia</a>, <a href="https://publications.waset.org/abstracts/search?q=imatinib%20resistance" title=" imatinib resistance"> imatinib resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=microRNA%20451" title=" microRNA 451"> microRNA 451</a>, <a href="https://publications.waset.org/abstracts/search?q=Polymerase%20Chain%20Reaction" title=" Polymerase Chain Reaction"> Polymerase Chain Reaction</a> </p> <a href="https://publications.waset.org/abstracts/23100/the-predictive-value-of-micro-rna-451-on-the-outcome-of-imatinib-treatment-in-chronic-myeloid-leukemia-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23100.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">294</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">47</span> Developing a Virtual Reality System to Assist in Anatomy Teaching and Evaluating the Effectiveness of That System </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Abdelkader">Tarek Abdelkader</a>, <a href="https://publications.waset.org/abstracts/search?q=Suresh%20Selvaraj"> Suresh Selvaraj</a>, <a href="https://publications.waset.org/abstracts/search?q=Prasad%20Iyer"> Prasad Iyer</a>, <a href="https://publications.waset.org/abstracts/search?q=Yong%20Mun%20Hin"> Yong Mun Hin</a>, <a href="https://publications.waset.org/abstracts/search?q=Hajmath%20Begum"> Hajmath Begum</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Gopalakrishnakone"> P. Gopalakrishnakone</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays, more and more educational institutes, as well as students, rely on 3D anatomy programs as an important tool that helps students correlate the actual locations of anatomical structures in a 3D dimension. Lately, virtual reality (VR) is gaining more favor from the younger generations due to its higher interactive mode. As a result, using virtual reality as a gamified learning platform for anatomy became the current goal. We present a model where a Virtual Human Anatomy Program (VHAP) was developed to assist with the anatomy learning experience of students. The anatomy module has been built, mostly, from real patient CT scans. Segmentation and surface rendering were used to create the 3D model by direct segmentation of CT scans for each organ individually and exporting that model as a 3D file. After acquiring the 3D files for all needed organs, all the files were introduced into a Virtual Reality environment as a complete body anatomy model. In this ongoing experiment, students from different Allied Health orientations are testing the VHAP. Specifically, the cardiovascular system has been selected as the focus system of study since all of our students finished learning about it in the 1st trimester. The initial results suggest that the VHAP system is adding value to the learning process of our students, encouraging them to get more involved and to ask more questions. Involved students comments show that they are excited about the VHAP system with comments about its interactivity as well as the ability to use it solo as a self-learning aid in combination with the lectures. Some students also experienced minor side effects like dizziness. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=3D%20construction" title="3D construction">3D construction</a>, <a href="https://publications.waset.org/abstracts/search?q=health%20sciences" title=" health sciences"> health sciences</a>, <a href="https://publications.waset.org/abstracts/search?q=teaching%20pedagogy" title=" teaching pedagogy"> teaching pedagogy</a>, <a href="https://publications.waset.org/abstracts/search?q=virtual%20reality" title=" virtual reality"> virtual reality</a> </p> <a href="https://publications.waset.org/abstracts/106605/developing-a-virtual-reality-system-to-assist-in-anatomy-teaching-and-evaluating-the-effectiveness-of-that-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106605.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">156</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">46</span> Thrombophilic Mutations in Tunisian Patients with Recurrent Pregnancy Loss</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Frikha%20Rim">Frikha Rim</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelmoula%20Bouayed%20Nouha"> Abdelmoula Bouayed Nouha</a>, <a href="https://publications.waset.org/abstracts/search?q=Rebai%20Tarek"> Rebai Tarek</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Pregnancy is a hypercoagulable state which causing a defective maternal haemostatic response and leading to thrombosis of the uteroplacental vasculature, that might cause pregnancy complications as recurrent pregnancy loss (RPL). Since heritable Thrombophilic defects are associated with increased thrombosis, their prevalence was evaluated in patients with special emphasis on combinations of the above pathologies. Especially, Factor V Leiden (FVL) G1691A, methylene tetra hydro folate reductase (MTHFR) C677T, and factor II (FII) G20210A mutations are three important causes of thrombophilia, which might be related to recurrent pregnancy loss (RPL). In this study we evaluated the presence of these three mutations [factor V Leiden (FVL), prothrombin G20210A (PTG) and methylenetetrahydrofolate reductase (MTHFR) C677T] amongst 35 Tunisian women with more than 2 miscarriages, referred to our genetic counseling. DNA was extracted from peripheral blood samples and PCR-RFLP was performed for the molecular diagnosis of each mutation. Factor V Leiden and Prothrombin mutation were detected respectively in 5.7% and 2.9% of women with particular history of early fetal loss and thrombotic events. Despites the luck of strength of this study, we insist that testing for the most inherited thrombophilia (FVL and FII mutation) should be performed in women with RPL in the context of thrombotic events. Multi-centre collaboration is necessary to clarify the real impact of thrombotic molecular defects on the pregnancy outcome, to ascertain the effect of thrombophilia on recurrent pregnancy loss and then to evaluate the appropriate therapeutic approach. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thrombophilia" title="thrombophilia">thrombophilia</a>, <a href="https://publications.waset.org/abstracts/search?q=recurrent%20pregnancy%20loss" title=" recurrent pregnancy loss"> recurrent pregnancy loss</a>, <a href="https://publications.waset.org/abstracts/search?q=factor%20V%20Leiden" title=" factor V Leiden"> factor V Leiden</a>, <a href="https://publications.waset.org/abstracts/search?q=prothrombin%20G20210A" title=" prothrombin G20210A"> prothrombin G20210A</a>, <a href="https://publications.waset.org/abstracts/search?q=methylene%20tetra%20hydro%20folate%20reductase" title=" methylene tetra hydro folate reductase"> methylene tetra hydro folate reductase</a> </p> <a href="https://publications.waset.org/abstracts/18319/thrombophilic-mutations-in-tunisian-patients-with-recurrent-pregnancy-loss" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18319.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">458</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">45</span> Extra Skeletal Manifestations of Histocytosis in Pediatrics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ayda%20Youssef">Ayda Youssef</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Ali%20Khalaf"> Mohammed Ali Khalaf</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Rafaat"> Tarek Rafaat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Langerhans cell histiocytosis (LCH) is a rare multi-systemic disease that shows an abnormal proliferation of these kinds of cells associated with a granular infiltration that affects different structures of the human body, including the lung, liver, spleen, lymph nodes, brain, mucocutaneous, soft tissue (head and neck), and salivary glands. Evaluation of the extent of disease is one of the major predictors of patient outcome. Objectives: To recognize the pathogenesis of Langerhans cell histiocytosis (LCH), describe the radiologic criteria that are suggestive of LCH in different organs rather than the bones and to illustrate the appropriate differential diagnoses for LCH in each of the common extra-osseous sites. Material and methods: A retrospective study was done on 150 biopsy-proven LCH patients from 2007 to 2012. All patients underwent imaging studies, mostly US, CT, and MRI. These patients were reviewed to assess the extra-skeletal manifestations of LCH. Results: In 150 patients with biopsy-proven LCH, There were 33 patients with liver affection, 5 patients with splenic lesions, 55 patients with enlarged lymph nodes, 9 patient with CNS disease and 11 patients with lung involvement. Conclusions: Because of the frequent LCH children and evaluation of the extent of disease is one of the major predictors of patient outcome. Radiologist need to be familiar with its presentation in different organs and regions of body outside the commonest site of affection (bones). A high-index suspicion should be raised a biopsy is recommended in the presence of radiological suspicion. Chemotherapy is the preferred therapeutic modality. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=langerhans%20cell%20histiocytosis" title="langerhans cell histiocytosis">langerhans cell histiocytosis</a>, <a href="https://publications.waset.org/abstracts/search?q=extra-skeletal" title=" extra-skeletal"> extra-skeletal</a>, <a href="https://publications.waset.org/abstracts/search?q=pediatrics" title=" pediatrics"> pediatrics</a>, <a href="https://publications.waset.org/abstracts/search?q=radiology" title=" radiology"> radiology</a> </p> <a href="https://publications.waset.org/abstracts/23036/extra-skeletal-manifestations-of-histocytosis-in-pediatrics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23036.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">437</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">44</span> Modern Well Logs Technology to Improve Geological Model for Libyan Deep Sand Stone Reservoir</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20S.%20Duzan">Tarek S. Duzan</a>, <a href="https://publications.waset.org/abstracts/search?q=Fisal%20Ben%20Ammer"> Fisal Ben Ammer</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Sula"> Mohamed Sula</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In some places within Sirt Basin-Libya, it has been noticed that seismic data below pre-upper cretaceous unconformity (PUK) is hopeless to resolve the large-scale structural features and is unable to fully determine reservoir delineation. Seismic artifacts (multiples) are observed in the reservoir zone (Nubian Formation) below PUK, which complicate the process of seismic interpretation. The nature of the unconformity and the structures below are still ambiguous and not fully understood which generates a significant gap in characterizing the geometry of the reservoir, the uncertainty accompanied with lack of reliable seismic data creates difficulties in building a robust geological model. High resolution dipmeter is highly useful in steeply dipping zones. This paper uses FMl and OBMl borehole images (dipmeter) to analyze the structures below the PUK unconformity from two wells drilled recently in the North Gialo field (a mature reservoir). In addition, borehole images introduce new evidences that the PUK unconformity is angular and the bedding planes within the Nubian formation (below PUK) are significantly titled. Structural dips extracted from high resolution borehole images are used to construct a new geological model by the utilization of latest software technology. Therefore, it is important to use the advance well logs technology such as FMI-HD for any future drilling and up-date the existing model in order to minimize the structural uncertainty. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=FMI%20%28formation%20micro%20imager%29" title="FMI (formation micro imager)">FMI (formation micro imager)</a>, <a href="https://publications.waset.org/abstracts/search?q=OBMI%20%28oil%20base%20mud%20imager%29" title=" OBMI (oil base mud imager)"> OBMI (oil base mud imager)</a>, <a href="https://publications.waset.org/abstracts/search?q=UBI%20%28ultra%20sonic%20borehole%20imager%29" title=" UBI (ultra sonic borehole imager)"> UBI (ultra sonic borehole imager)</a>, <a href="https://publications.waset.org/abstracts/search?q=nub%20sandstone%20reservoir%20in%20North%20gialo" title=" nub sandstone reservoir in North gialo"> nub sandstone reservoir in North gialo</a> </p> <a href="https://publications.waset.org/abstracts/40038/modern-well-logs-technology-to-improve-geological-model-for-libyan-deep-sand-stone-reservoir" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40038.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">319</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">43</span> Protective Potential of Hyperhalophilic Diatoms Extract Against Lead Induced Oxidative Stress in Rats and Human HepG2 and HEK293 Cells Line</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wassim%20Guermazi">Wassim Guermazi</a>, <a href="https://publications.waset.org/abstracts/search?q=Saoussan%20Boukhris"> Saoussan Boukhris</a>, <a href="https://publications.waset.org/abstracts/search?q=Neila%20Annabi%20Trabelsi"> Neila Annabi Trabelsi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Rebai"> Tarek Rebai</a>, <a href="https://publications.waset.org/abstracts/search?q=Alya%20Sellami-Kamoun"> Alya Sellami-Kamoun</a>, <a href="https://publications.waset.org/abstracts/search?q=Habib%20Ayadi"> Habib Ayadi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work investigates the protective effects of the microalga Halamphora sp. extract (H. Ext) as a natural product on lead-intoxicated liver and kidney human cells in vitro and in vivo on rats wistar. HepG2 cells line derived from human hepatocellular carcinoma and HEK293 cells line derived from human embryonic kidney were used for the in vitro study. The analysis of the fatty acids methyl esters of the extract was performed by a GC/MS. Four groups of rats, each of which was composed of six animals, were used for the in vivo experiment. The pretreatment of HepG2 and HEK293 cells line with the extract (100 µg mL-1) significantly (p < 0.05) protected against cytotoxicity induced by lead exposure. In vivo, the biochemical parameters in serum, namely malondialdehyde level (MDA), superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) activities, were measured in supernatants of organ homogenates. H. Ext was found to be rich in fatty acids, essentially palmitic and palmitoleic accounting respectively 29.46% and 42.07% of total fatty acids. Both in vitro and in vivo, the co-treatment with H. Ext allowed the protection of the liver and kidney cells structure, as well as the significant preservation of normal antioxidant and biochemical parameters in rats. Halamphora extract rich in fatty acids has been proven to be effective in protection against Pb-induced toxicity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microalga%20extract" title="microalga extract">microalga extract</a>, <a href="https://publications.waset.org/abstracts/search?q=human%20cells%20line" title=" human cells line"> human cells line</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid" title=" fatty acid"> fatty acid</a>, <a href="https://publications.waset.org/abstracts/search?q=lead%20exposure" title=" lead exposure"> lead exposure</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=rats" title=" rats"> rats</a> </p> <a href="https://publications.waset.org/abstracts/163424/protective-potential-of-hyperhalophilic-diatoms-extract-against-lead-induced-oxidative-stress-in-rats-and-human-hepg2-and-hek293-cells-line" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163424.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">88</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">42</span> An Investigation into Why Liquefaction Charts Work: A Necessary Step toward Integrating the States of Art and Practice</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Abdoun">Tarek Abdoun</a>, <a href="https://publications.waset.org/abstracts/search?q=Ricardo%20Dobry"> Ricardo Dobry</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper is a systematic effort to clarify why field liquefaction charts based on Seed and Idriss’ Simplified Procedure work so well. This is a necessary step toward integrating the states of the art (SOA) and practice (SOP) for evaluating liquefaction and its effects. The SOA relies mostly on laboratory measurements and correlations with void ratio and relative density of the sand. The SOP is based on field measurements of penetration resistance and shear wave velocity coupled with empirical or semi-empirical correlations. This gap slows down further progress in both SOP and SOA. The paper accomplishes its objective through: a literature review of relevant aspects of the SOA including factors influencing threshold shear strain and pore pressure buildup during cyclic strain-controlled tests; a discussion of factors influencing field penetration resistance and shear wave velocity; and a discussion of the meaning of the curves in the liquefaction charts separating liquefaction from no liquefaction, helped by recent full-scale and centrifuge results. It is concluded that the charts are curves of constant cyclic strain at the lower end (Vs1 < 160 m/s), with this strain being about 0.03 to 0.05% for earthquake magnitude, Mw ≈ 7. It is also concluded, in a more speculative way, that the curves at the upper end probably correspond to a variable increasing cyclic strain and Ko, with this upper end controlled by over consolidated and preshaken sands, and with cyclic strains needed to cause liquefaction being as high as 0.1 to 0.3%. These conclusions are validated by application to case histories corresponding to Mw ≈ 7, mostly in the San Francisco Bay Area of California during the 1989 Loma Prieta earthquake. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=permeability" title="permeability">permeability</a>, <a href="https://publications.waset.org/abstracts/search?q=lateral%20spreading" title=" lateral spreading"> lateral spreading</a>, <a href="https://publications.waset.org/abstracts/search?q=liquefaction" title=" liquefaction"> liquefaction</a>, <a href="https://publications.waset.org/abstracts/search?q=centrifuge%20modeling" title=" centrifuge modeling"> centrifuge modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20wave%20velocity%20charts" title=" shear wave velocity charts"> shear wave velocity charts</a> </p> <a href="https://publications.waset.org/abstracts/32255/an-investigation-into-why-liquefaction-charts-work-a-necessary-step-toward-integrating-the-states-of-art-and-practice" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32255.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">297</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">41</span> Setting Uncertainty Conditions Using Singular Values for Repetitive Control in State Feedback</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20A.%20Alsubaie">Muhammad A. Alsubaie</a>, <a href="https://publications.waset.org/abstracts/search?q=Mubarak%20K.%20H.%20Alhajri"> Mubarak K. H. Alhajri</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20S.%20Altowaim"> Tarek S. Altowaim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A repetitive controller designed to accommodate periodic disturbances via state feedback is discussed. Periodic disturbances can be represented by a time delay model in a positive feedback loop acting on system output. A direct use of the small gain theorem solves the periodic disturbances problem via 1) isolating the delay model, 2) finding the overall system representation around the delay model and 3) designing a feedback controller that assures overall system stability and tracking error convergence. This paper addresses uncertainty conditions for the repetitive controller designed in state feedback in either past error feedforward or current error feedback using singular values. The uncertainty investigation is based on the overall system found and the stability condition associated with it; depending on the scheme used, to set an upper/lower limit weighting parameter. This creates a region that should not be exceeded in selecting the weighting parameter which in turns assures performance improvement against system uncertainty. Repetitive control problem can be described in lifted form. This allows the usage of singular values principle in setting the range for the weighting parameter selection. The Simulation results obtained show a tracking error convergence against dynamic system perturbation if the weighting parameter chosen is within the range obtained. Simulation results also show the advantage of weighting parameter usage compared to the case where it is omitted. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=model%20mismatch" title="model mismatch">model mismatch</a>, <a href="https://publications.waset.org/abstracts/search?q=repetitive%20control" title=" repetitive control"> repetitive control</a>, <a href="https://publications.waset.org/abstracts/search?q=singular%20values" title=" singular values"> singular values</a>, <a href="https://publications.waset.org/abstracts/search?q=state%20feedback" title=" state feedback"> state feedback</a> </p> <a href="https://publications.waset.org/abstracts/99234/setting-uncertainty-conditions-using-singular-values-for-repetitive-control-in-state-feedback" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/99234.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">155</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">40</span> An Experimental Investigation on Productivity and Performance of an Improved Design of Basin Type Solar Still</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahmoud%20S.%20El-Sebaey">Mahmoud S. El-Sebaey</a>, <a href="https://publications.waset.org/abstracts/search?q=Asko%20Ellman"> Asko Ellman</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Hegazy"> Ahmed Hegazy</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Ghonim"> Tarek Ghonim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Due to population growth, the need for drinkable healthy water is highly increased. Consequently, and since the conventional sources of water are limited, researchers devoted their efforts to oceans and seas for obtaining fresh drinkable water by thermal distillation. The current work is dedicated to the design and fabrication of modified solar still model, as well as conventional solar still for the sake of comparison. The modified still is single slope double basin solar still. The still consists of a lower basin with a dimension of 1000 mm x 1000 mm which contains the sea water, as well as the top basin that made with 4 mm acrylic, was temporarily kept on the supporting strips permanently fixed with the side walls. Equally ten spaced vertical glass strips of 50 mm height and 3 mm thickness were provided at the upper basin for the stagnancy of the water. Window glass of 3 mm was used as the transparent cover with 23° inclination at the top of the still. Furthermore, the performance evaluation and comparison of these two models in converting salty seawater into drinkable freshwater are introduced, analyzed and discussed. The experiments were performed during the period from June to July 2018 at seawater depths of 2, 3, 4 and 5 cm. Additionally, the solar still models were operated simultaneously in the same climatic conditions to analyze the influence of the modifications on the freshwater output. It can be concluded that the modified design of double basin single slope solar still shows the maximum freshwater output at all water depths tested. The results showed that the daily productivity for modified and conventional solar still was 2.9 and 1.8 dm³/m² day, indicating an increase of 60% in fresh water production. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=freshwater%20output" title="freshwater output">freshwater output</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20still" title=" solar still"> solar still</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20energy" title=" solar energy"> solar energy</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20desalination" title=" thermal desalination"> thermal desalination</a> </p> <a href="https://publications.waset.org/abstracts/104867/an-experimental-investigation-on-productivity-and-performance-of-an-improved-design-of-basin-type-solar-still" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104867.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">135</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">39</span> Relationship between Wave Velocities and Geo-Pressures in Shallow Libyan Carbonate Reservoir</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Sabri%20Duzan">Tarek Sabri Duzan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Knowledge of the magnitude of Geo-pressures (Pore, Fracture & Over-burden pressures) is vital especially during drilling, completions, stimulations, Enhance Oil Recovery. Many times problems, like lost circulation could have been avoided if techniques for calculating Geo-pressures had been employed in the well planning, mud weight plan, and casing design. In this paper, we focused on the relationships between Geo-pressures and wave velocities (P-Wave (Vp) and S-wave (Vs)) in shallow Libyan carbonate reservoir in the western part of the Sirte Basin (Dahra F-Area). The data used in this report was collected from four new wells recently drilled. Those wells were scattered throughout the interested reservoir as shown in figure-1. The data used in this work are bulk density, Formation Mult -Tester (FMT) results and Acoustic wave velocities. Furthermore, Eaton Method is the most common equation used in the world, therefore this equation has been used to calculate Fracture pressure for all wells using dynamic Poisson ratio calculated by using acoustic wave velocities, FMT results for pore pressure, Overburden pressure estimated by using bulk density. Upon data analysis, it has been found that there is a linear relationship between Geo-pressures (Pore, Fracture & Over-Burden pressures) and wave velocities ratio (Vp/Vs). However, the relationship was not clear in the high-pressure area, as shown in figure-10. Therefore, it is recommended to use the output relationship utilizing the new seismic data for shallow carbonate reservoir to predict the Geo-pressures for future oil operations. More data can be collected from the high-pressure zone to investigate more about this area. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bulk%20density" title="bulk density">bulk density</a>, <a href="https://publications.waset.org/abstracts/search?q=formation%20mult-tester%20%28FMT%29%20results" title=" formation mult-tester (FMT) results"> formation mult-tester (FMT) results</a>, <a href="https://publications.waset.org/abstracts/search?q=acoustic%20wave" title=" acoustic wave"> acoustic wave</a>, <a href="https://publications.waset.org/abstracts/search?q=carbonate%20shalow%20reservoir" title=" carbonate shalow reservoir"> carbonate shalow reservoir</a>, <a href="https://publications.waset.org/abstracts/search?q=d%2Fjfield%20velocities" title=" d/jfield velocities"> d/jfield velocities</a> </p> <a href="https://publications.waset.org/abstracts/40037/relationship-between-wave-velocities-and-geo-pressures-in-shallow-libyan-carbonate-reservoir" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40037.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">287</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">38</span> Risks of Traditional Practices: Chemical and Health Assessment of Bakhour</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yehya%20Elsayed">Yehya Elsayed</a>, <a href="https://publications.waset.org/abstracts/search?q=Sarah%20Dalibalta"> Sarah Dalibalta</a>, <a href="https://publications.waset.org/abstracts/search?q=Fareedah%20Alqtaishat"> Fareedah Alqtaishat</a>, <a href="https://publications.waset.org/abstracts/search?q=Ioline%20Gomes"> Ioline Gomes</a>, <a href="https://publications.waset.org/abstracts/search?q=Nagelle%20Fernandes"> Nagelle Fernandes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Bakhour or Arabian incense is traditionally used to perfume houses, shops and clothing as part of cultural or religious practices in several Middle Eastern countries. Conventionally, Bakhour consists of a mixture of natural ingredients such as chips of agarwood (oud), musk and sandalwoods that are soaked in scented oil. Bakhour is usually burned by charcoal or by using gas or electric burners to produce the scented smoke. It is necessary to evaluate the impact of such practice on human health and environment especially that the burning of Bakhour is usually done on a regular basis and in closed areas without proper ventilation. Although significant amount of research has been reported in scientific literature on the chemical analysis of various types of incense smoke, unfortunately only very few of them focused specifically on the health impacts of Bakhour. Raw Bakhour samples, their smoke emissions and the ash residue were analyzed to assess the existence of toxic ingredients and their possible influence on health and the environment. Three brands of Bakhour samples were analyzed for the presence of harmful heavy metals and organic compounds. Thermal Desorption Gas Chromatography-Mass Spectrometry (TD-GC-MS) was used to identify organic compounds while Inductively Coupled Plasma (ICP) and Scanning Electron Microscope-Energy Dispersive X-Ray Spectrometer (SEM-EDS) were used to analyze the presence of toxic and heavy metals. Organic compounds from the smoke were collected on specific tenax and activated carbon adsorption tubes. More than 850 chemical compounds were identified. The presence of 19 carcinogens, 23 toxins and 173 irritants were confirmed. Additionally, heavy metals were detected in amounts similar to those present in cigarettes. However, it was noticed that many of the detected compounds in the smoke lacked clinical studies on their health effects which shows the need for further clinical studies to be devoted to this area of study. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bakhour" title="Bakhour">Bakhour</a>, <a href="https://publications.waset.org/abstracts/search?q=incense%20smoke" title=" incense smoke"> incense smoke</a>, <a href="https://publications.waset.org/abstracts/search?q=pollution" title=" pollution"> pollution</a>, <a href="https://publications.waset.org/abstracts/search?q=indoor%20environment" title=" indoor environment"> indoor environment</a>, <a href="https://publications.waset.org/abstracts/search?q=health%20risk" title=" health risk"> health risk</a>, <a href="https://publications.waset.org/abstracts/search?q=chemical%20analysis" title=" chemical analysis"> chemical analysis</a> </p> <a href="https://publications.waset.org/abstracts/23759/risks-of-traditional-practices-chemical-and-health-assessment-of-bakhour" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23759.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">428</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">37</span> Chemical and Health Assessment of Bakhour: Risks of Traditional Practices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yehya%20Elsayed">Yehya Elsayed</a>, <a href="https://publications.waset.org/abstracts/search?q=Sarah%20Dalibalta"> Sarah Dalibalta</a>, <a href="https://publications.waset.org/abstracts/search?q=Fareedah%20Alqtaishat"> Fareedah Alqtaishat</a>, <a href="https://publications.waset.org/abstracts/search?q=Ioline%20Gomes"> Ioline Gomes</a>, <a href="https://publications.waset.org/abstracts/search?q=Nagelle%20Fernandes">Nagelle Fernandes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Bakhour, or Arabian incense, is traditionally used to perfume houses, shops and clothing as part of cultural or religious practices in several Middle Eastern countries. Conventionally, Bakhour consists of a mixture of natural ingredients such as chips of agarwood (oud), musk and sandalwoods that are soaked in scented oil. Bakhour is usually burned by charcoal or by using gas or electric burners to produce the scented smoke. It is necessary to evaluate the impact of such practice on human health and environment especially that the burning of Bakhour is usually done on a regular basis and in closed areas without proper ventilation. Although significant amount of research has been reported in scientific literature on the chemical analysis of various types of incense smoke, unfortunately, only very few of them focused specifically on the health impacts of Bakhour. Raw Bakhour samples, their smoke emissions and the ash residue were analyzed to assess the existence of toxic ingredients and their possible influence on health and the environment. Three brands of Bakhour samples were analyzed for the presence of harmful heavy metals and organic compounds. Thermal Desorption Gas Chromatography-Mass Spectrometry (TD-GC-MS) was used to identify organic compounds while Inductively Coupled Plasma (ICP) and Scanning Electron Microscope-Energy Dispersive X-Ray Spectrometer (SEM-EDS) were used to analyze the presence of toxic and heavy metals.. Organic compounds from the smoke were collected on specific tenax and activated carbon adsorption tubes. More than 850 chemical compounds were identified. The presence of 19 carcinogens, 23 toxins, and 173 irritants were confirmed. Additionally, heavy metals were detected in amounts similar to those present in cigarettes. However, it was noticed that many of the detected compounds in the smoke lacked clinical studies on their health effects which shows the need for further clinical studies to be devoted to this area of study. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bakhour" title="bakhour">bakhour</a>, <a href="https://publications.waset.org/abstracts/search?q=incense%20smoke" title=" incense smoke"> incense smoke</a>, <a href="https://publications.waset.org/abstracts/search?q=pollution" title=" pollution"> pollution</a>, <a href="https://publications.waset.org/abstracts/search?q=indoor%20environment" title=" indoor environment"> indoor environment</a>, <a href="https://publications.waset.org/abstracts/search?q=health%20risk" title=" health risk"> health risk</a>, <a href="https://publications.waset.org/abstracts/search?q=chemical%20analysis" title=" chemical analysis"> chemical analysis</a> </p> <a href="https://publications.waset.org/abstracts/23760/chemical-and-health-assessment-of-bakhour-risks-of-traditional-practices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23760.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">293</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">36</span> Sustainable Urban Mobility: Rethinking the Bus Stop Infrastructures of Dhaka South </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hasnun%20Wara%20Khondker">Hasnun Wara Khondker</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Tarek%20Morad"> M. Tarek Morad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Bangladesh is one of the most populous countries of the world in terms of density. Dhaka, the capital of Bangladesh currently has a population of approximately 15-16 million of which around 9 million people are accommodated in Dhaka South City Corporation (DSCC) within around 109 square kilometer area. Despite having various urban issues, country is at its pick of economic progress and Dhaka is the core of this economic growth. To ensure the proper economic development and citizens wellbeing, city needs an ingenious, congestion-free public transportation network. Bus stop/bus bay is an essential infrastructure for ensuring efficient public transportation flow within the city along with enhancing accessibility, user comfort, and safety through public amenities. At present, there is no established Mass Rapid Transit or Bus Rapid Transit network within the city and therefore these private owned buses are the only major mode of mass transportation of Dhaka city. DSCC has undertaken a project to re-design several bus stops and bus bays according to the universal standard for better urban mobility and user satisfaction. This paper will analyze the design approach of the bus stop/bay infrastructure within Dhaka South, putting the research lens on sustainable urban mobility with case studies of similar kind of urban context. The paper will also study the design process with setting several parameters, i.e., accessibility, passenger safety, comfort, sustainability, etc. Moreover, this research will recommend a guideline for designing a bus stop based on the analysis of the design methods. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bus%20stop" title="bus stop">bus stop</a>, <a href="https://publications.waset.org/abstracts/search?q=Dhaka" title=" Dhaka"> Dhaka</a>, <a href="https://publications.waset.org/abstracts/search?q=public%20transportation" title=" public transportation"> public transportation</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20urban%20mobility" title=" sustainable urban mobility"> sustainable urban mobility</a>, <a href="https://publications.waset.org/abstracts/search?q=universal%20accessibility" title=" universal accessibility"> universal accessibility</a>, <a href="https://publications.waset.org/abstracts/search?q=user%20safety" title=" user safety"> user safety</a> </p> <a href="https://publications.waset.org/abstracts/75888/sustainable-urban-mobility-rethinking-the-bus-stop-infrastructures-of-dhaka-south" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75888.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">380</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> The Impact of Virtual Schooling Due to COVID-19 Restrictions on Children’s Mood and Behavior</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rahaf%20Alasiri">Rahaf Alasiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Alghamdi"> Tarek Alghamdi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdullah%20Zarkan"> Abdullah Zarkan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Due to measures such as school closure, social distancing, and virtual teaching during the pandemic, primary school children's psychological well-being is greatly affected. These measures have short and long-term consequences on the children's well-being and mental health. Identifying these consequences is important. Aim: This study aimed to evaluate mood and behavior changes in children who attended school virtually. Subjects and methods: This is a cross-sectional study conducted among children and their parents who visited the outpatient clinic. A self-administered questionnaire was given to the parents of children aged between 6 to 14 years. The questionnaire includes socio-demographic characteristics, Conor's modifies scale to assess the attention deficit hyperactivity disorder (ADHD) of children, and the parental stress scale (PSS) to assess the stress symptoms of the parents. Results: Of the 66 surveyed children, 60.6% were aged between 10 to 14 years old, with the female being dominant (77.3%). The most common medical condition was asthma (7.6%), and nearly two-thirds (63.6%) indicated good health conditions during the pandemic. There was a significant inverse correlation observed between ADHD score and PSS score (r=-0.387). No significant differences are in ADHD and PSS scores in relation to the socio-demographic characteristics of the children, including age, gender, and having an associated medical condition (p>0.05). Conclusion: During the pandemic, children who attended virtual classes did not seem to affect even with restrictions. Most children indicated good health conditions during the pandemic. However, it is surprising to know that in spite of children’s high spirits during the pandemic, their parents were seen to have an increased level of stress. Strategies to address parents’ psychological disorders during the pandemic are warranted. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=children%27s%20mood" title="children's mood">children's mood</a>, <a href="https://publications.waset.org/abstracts/search?q=COVID-19" title=" COVID-19"> COVID-19</a>, <a href="https://publications.waset.org/abstracts/search?q=ADHD" title=" ADHD"> ADHD</a>, <a href="https://publications.waset.org/abstracts/search?q=parental%20stress" title=" parental stress"> parental stress</a> </p> <a href="https://publications.waset.org/abstracts/160632/the-impact-of-virtual-schooling-due-to-covid-19-restrictions-on-childrens-mood-and-behavior" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/160632.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">71</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> The Influence of Migration on Migrants' Culture: A Study on Egyptian Nubians' Migration to Investigate Culture Changes </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Hassan">Tarek Hassan</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanaa%20Abouras"> Sanaa Abouras</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Some factors such as interaction of migration process, cultural identity have an impact in a way that may lead to cultural disinheritance. Even if migrants' culture would not be lost, it may be affected by the new society culture. Therefore, it is anticipated that migration of an ethnic group would impact the culture of that group. Nubians; an ethnic group originated in South Egypt, have experienced migration that took place in the sixties of the past century. Nubians were forced to leave their origin land and relocate to Kom Ombo; an Egyptian town to the north of Aswan. The effect of migration on national culture, social homogeneity or the interest of social contact influences the attitudes of natives towards migration. Hence, it is very important for societies to help migrants to adapt to the new culture and at the same time not to impede migrants' effort to maintain their own culture. This study aims to investigate the effect of internal migration on the culture of Egyptian Nubians in order to predict if Nubian can maintain their own culture after the migration. Research question: what is the cultural influence of Nubians' migration from Egyptian Nubia to their new destinations? The researchers' hypothesis: there is mutual influence between the two cultures of Nubians and non-Nubians in Egypt. Results supported researchers' hypothesis as they observed that the Nubians managed to reserve balance between the maintenance of their own culture and the adoption of some cultural features of the community of their new destination(s). Also, the study examined why Nubians adhere to their culture although they left their land forever. Questionnaire and interviews were used to collect data from 80 informants; 40 Nubians and 40 non-Nubians in Kom-Ombo and the two cities of Cairo and Alexandria. Results suggested that there is obvious mutual cultural impact between Nubians and non-Nubians. The findings of this study would trigger the researchers to conduct further research on minorities for the deeper understanding of the impact of/on the culture of minorities. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=culture%20change" title="culture change">culture change</a>, <a href="https://publications.waset.org/abstracts/search?q=culture%20influence" title=" culture influence"> culture influence</a>, <a href="https://publications.waset.org/abstracts/search?q=culture%20maintenance" title=" culture maintenance"> culture maintenance</a>, <a href="https://publications.waset.org/abstracts/search?q=minority%20migration" title=" minority migration"> minority migration</a> </p> <a href="https://publications.waset.org/abstracts/85226/the-influence-of-migration-on-migrants-culture-a-study-on-egyptian-nubians-migration-to-investigate-culture-changes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85226.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">227</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> Role of Selenium and Vitamin E in Occupational Exposure to Heavy Metals (Mercury, Lead and Cadmium): Impact of Working in Lamp Factory</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Elnimr">Tarek Elnimr</a>, <a href="https://publications.waset.org/abstracts/search?q=Rabab%20El-kelany"> Rabab El-kelany</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Heavy metals are environmental contaminants that may pose long-term health risks. Unfortunately, the consequent implementation of preventive measures was generally delayed, causing important negative effects to the exposed populations. The objective of this study was to determine whether co-consumption of nutritional supplements as selenium and vitamin E would treat the hazardous effects of exposure to mercury, lead and cadmium. 108 workers (60 males and 48 females) were the subject of this study, their ages ranged from 19-63 years, (M = 29.5±10.12). They were working in lamp factory for an average of 0.5-40 years (M= 5.3±8.8). Twenty control subjects matched for age and gender were used for comparison. All workers were subjected to neuropsychiatric evaluation. General Health Questionnaire (GHQ-28) revealed that 44.4% were complaining of anxiety, 52.7% of depression, 41.6% of social dysfunction and 22.2% of somatic symptoms. Cognitive tests revealed that long-term memory was not affected significantly when compared with controls, while short term memory and perceptual ability were affected significantly. Blood metal levels were measured by Inductively Coupled Plasma – optical emission spectrometry(ICP-OES), and revealed that the mean blood mercury, lead and cadmium concentrations before treatment were 1.6 mg/l, 0.39 mg/l and 1.7 µg/l, while they decreased significantly after treatment to 1.2 mg/l, 0.29 mg/l and 1.3 µg/l respectively. Anti-oxidative enzymes (paraoxonase and catalase) and lipid peroxidation product (malondialdehyde) were measured before and after treatment with selenium and vitamin E, and showed significant improvement. It could be concluded that co-consumption of selenium and vitamin E produces significant decrease in mercury, lead and cadmium levels in blood. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mercury" title="mercury">mercury</a>, <a href="https://publications.waset.org/abstracts/search?q=lead" title=" lead"> lead</a>, <a href="https://publications.waset.org/abstracts/search?q=cadmium" title=" cadmium"> cadmium</a>, <a href="https://publications.waset.org/abstracts/search?q=neuropsychiatric%20impairment" title=" neuropsychiatric impairment"> neuropsychiatric impairment</a>, <a href="https://publications.waset.org/abstracts/search?q=selenium" title=" selenium"> selenium</a>, <a href="https://publications.waset.org/abstracts/search?q=vitamin%20E" title=" vitamin E"> vitamin E</a> </p> <a href="https://publications.waset.org/abstracts/38315/role-of-selenium-and-vitamin-e-in-occupational-exposure-to-heavy-metals-mercury-lead-and-cadmium-impact-of-working-in-lamp-factory" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38315.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">346</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> Modeling of Masonry In-Filled R/C Frame to Evaluate Seismic Performance of Existing Building </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20M.%20Alguhane"> Tarek M. Alguhane</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayman%20H.%20Khalil"> Ayman H. Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20N.%20Fayed"> M. N. Fayed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayman%20M.%20Ismail"> Ayman M. Ismail</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper deals with different modeling aspects of masonry infill: no infill model, Layered shell infill model, and strut infill model. These models consider the complicated behavior of the in-filled plane frames under lateral load similar to an earthquake load. Three strut infill models are used: NBCC (2005) strut infill model, ASCE/SEI 41-06 strut infill model and proposed strut infill model based on modification to Canadian, NBCC (2005) strut infill model. Pushover and modal analyses of a masonry infill concrete frame with a single storey and an existing 5-storey RC building have been carried out by using different models for masonry infill. The corresponding hinge status, the value of base shear at target displacement as well as their dynamic characteristics have been determined and compared. A validation of the structural numerical models for the existing 5-storey RC building has been achieved by comparing the experimentally measured and the analytically estimated natural frequencies and their mode shapes. This study shows that ASCE/SEI 41-06 equation underestimates the values for the equivalent properties of the diagonal strut while Canadian, NBCC (2005) equation gives realistic values for the equivalent properties. The results indicate that both ASCE/SEI 41-06 and Canadian, NBCC (2005) equations for strut infill model give over estimated values for dynamic characteristic of the building. Proposed modification to Canadian, NBCC (2005) equation shows that the fundamental dynamic characteristic values of the building are nearly similar to the corresponding values using layered shell elements as well as measured field results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=masonry%20infill" title="masonry infill">masonry infill</a>, <a href="https://publications.waset.org/abstracts/search?q=framed%20structures" title=" framed structures"> framed structures</a>, <a href="https://publications.waset.org/abstracts/search?q=RC%20buildings" title=" RC buildings"> RC buildings</a>, <a href="https://publications.waset.org/abstracts/search?q=non-structural%20elements" title=" non-structural elements"> non-structural elements</a> </p> <a href="https://publications.waset.org/abstracts/38117/modeling-of-masonry-in-filled-rc-frame-to-evaluate-seismic-performance-of-existing-building" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38117.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">277</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> In situ Immobilization of Mercury in a Contaminated Calcareous Soil Using Water Treatment Residual Nanoparticles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elsayed%20A.%20Elkhatib">Elsayed A. Elkhatib</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20M.%20Mahdy"> Ahmed M. Mahdy</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20L.%20Moharem"> Mohamed L. Moharem</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20%20O.%20Mesalem"> Mohamed O. Mesalem </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Mercury (Hg) is one of the most toxic and bio-accumulative heavy metal in the environment. However, cheap and effective in situ remediation technology is lacking. In this study, the effects of water treatment residuals nanoparticles (nWTR) on mobility, fractionation and speciation of mercury in an arid zone soil from Egypt were evaluated. Water treatment residual nanoparticles with high surface area (129 m 2 g-1) were prepared using Fritsch planetary mono mill. Scanning and transmission electron microscopy revealed that the nanoparticles of WTR nanoparticles are spherical in shape, and single particle sizes are in the range of 45 to 96 nm. The x-ray diffraction (XRD) results ascertained that amorphous iron, aluminum (hydr)oxides and silicon oxide dominating all nWTR, with no apparent crystalline iron–Al (hydr)oxides. Addition of nWTR, greatly increased the Hg sorption capacities of studied soils and greatly reduced the cumulative Hg released from the soils. Application of nWTR at 0.10 and 0.30 % rates reduced the released Hg from the soil by 50 and 85 % respectively. The power function and first order kinetics models well described the desorption process from soils and nWTR amended soils as evidenced by high coefficient of determination (R2) and low SE values. Application of nWTR greatly increased the association of Hg with the residual fraction. Meanwhile, application of nWTR at a rate of 0.3% greatly increased the association of Hg with the residual fraction (>93%) and significantly increased the most stable Hg species (Hg(OH)2 amor) which in turn enhanced Hg immobilization in the studied soils. Fourier transmission infrared spectroscopy analysis indicated the involvement of nWTR in the retention of Hg (II) through OH groups which suggest inner-sphere adsorption of Hg ions to surface functional groups on nWTR. These results demonstrated the feasibility of using a low-cost nWTR as best management practice to immobilize excess Hg in contaminated soils. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=release%20kinetics" title="release kinetics">release kinetics</a>, <a href="https://publications.waset.org/abstracts/search?q=Fourier%20transmission%20infrared%20spectroscopy" title=" Fourier transmission infrared spectroscopy"> Fourier transmission infrared spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=Hg%20fractionation" title=" Hg fractionation"> Hg fractionation</a>, <a href="https://publications.waset.org/abstracts/search?q=Hg%20species" title=" Hg species "> Hg species </a> </p> <a href="https://publications.waset.org/abstracts/49758/in-situ-immobilization-of-mercury-in-a-contaminated-calcareous-soil-using-water-treatment-residual-nanoparticles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49758.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">30</span> Morphological Variation of the Mesenteric Lymph Node in Dromedary Camels: The Impact of Rearing Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khenenou%20Tarek">Khenenou Tarek</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Amine%20Fares"> Mohamed Amine Fares</a>, <a href="https://publications.waset.org/abstracts/search?q=Djallal%20Eddine%20Rahmoun"> Djallal Eddine Rahmoun</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study intends to evaluate the morphological changes in the mesenteric lymph nodes of dromedaries in different rearing systems. we aimed to evaluate the adaptative behavior of the animal’s immune system with environmental variations, and to conduct a comparative analysis on the morphological features of the mesenteric lymph node of the one-humped camel (Camelus dromedarius) in the region of El Oued, with two different rearing systems, with different practices and different purposes. The study was conducted using histo-morphometric techniques to analyze the morphological features of the mesenteric lymph node of the one-humped camel (Camelus dromedarius) in the region of El Oued. Two groups of dromedaries were used in the study, one group raised in a free-roaming housing system and another group raised in a restricted-roaming housing system. The results revealed that there were significant differences between the two groups in terms of active follicle ratio and size and also the cellular population of functional zones. Animals living and roaming outside the farm barriers were more exposed to pathogens, which leads to the installation of an adaptative process, whereas the animals living under restricted-roaming housing system were not exposed to pathogens. This study indicated that the adaptative behavior of the animal’s immune system with environmental variations is the functional translation of morphological changes. The obtained findings revealed that the morphological features of the mesenteric lymph node of the one-humped camel (Camelus dromedarius) in the region of El Oued are directly linked to the rearing system practices <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adaptative%20behavior" title="adaptative behavior">adaptative behavior</a>, <a href="https://publications.waset.org/abstracts/search?q=dromedary" title=" dromedary"> dromedary</a>, <a href="https://publications.waset.org/abstracts/search?q=lymph%20node" title=" lymph node"> lymph node</a>, <a href="https://publications.waset.org/abstracts/search?q=morphology" title=" morphology"> morphology</a>, <a href="https://publications.waset.org/abstracts/search?q=rearing%20systems" title=" rearing systems"> rearing systems</a> </p> <a 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