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Shalaby</title> <meta name="description" content="Search results for: Essam Shalaby"> <meta name="keywords" content="Essam Shalaby"> <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="Essam Shalaby" name="q" aria-label="Search"> <button class="btn btn-light my-2 my-sm-0" type="submit"><i class="fas fa-search"></i></button> </form> </div> <div class="collapse navbar-collapse mt-1" id="navbarMenu"> <ul class="navbar-nav ml-auto align-items-center" id="mainNavMenu"> <li class="nav-item"> <a class="nav-link" href="https://waset.org/conferences" title="Conferences in 2024/2025/2026">Conferences</a> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/disciplines" title="Disciplines">Disciplines</a> </li> <li 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Essam Shalaby"> <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> 61</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Essam Shalaby</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">61</span> A Comparative Study of Microstructure, Thermal and Mechanical Properties of A359 Composites Reinforced with SiC, Si3N4 and AlN Particles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Essam%20Shalaby">Essam Shalaby</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20Churyumov"> Alexander Churyumov</a>, <a href="https://publications.waset.org/abstracts/search?q=Malak%20Abou%20El-Khair"> Malak Abou El-Khair</a>, <a href="https://publications.waset.org/abstracts/search?q=Atef%20Daoud"> Atef Daoud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A comparative study of the thermal and mechanical behavior of squeezed A359 composites containing 5, 10 and 15 wt.% SiC, (SiC+ Si3N4) and AlN particulates was investigated. Stir followed by squeeze casting techniques are used to produce A359 composites. It was noticed that, A359/AlN composites have high thermal conductivity as compared to A359 alloy and even to A359/SiC or A359/(SiC+Si3N4) composites. Microstructures of the composites have shown homogeneous and even distribution of reinforcements within the matrix. Interfacial reactions between particles and matrix were investigated using X-ray diffraction and energy dispersive X-ray analysis. The presence of particles led not only to increase peak hardness of the composites but also to accelerate the aging kinetics. As compared with A359 matrix alloy, compression test of the composites has exhibited a significant increase in the yield and the ultimate compressive strengths with a relative reduction in the failure strain. Those light weight composites have a high potential to be used for automotive and aerospace applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=metal-matrix%20composite" title="metal-matrix composite">metal-matrix composite</a>, <a href="https://publications.waset.org/abstracts/search?q=squeeze" title=" squeeze"> squeeze</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure" title=" microstructure"> microstructure</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20conductivity" title=" thermal conductivity"> thermal conductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=compressive%20properties" title=" compressive properties"> compressive properties</a> </p> <a href="https://publications.waset.org/abstracts/66981/a-comparative-study-of-microstructure-thermal-and-mechanical-properties-of-a359-composites-reinforced-with-sic-si3n4-and-aln-particles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/66981.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">381</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">60</span> Weak Mutually Unbiased Bases versus Mutually Unbiased Bases in Terms of T-Designs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Shalaby">Mohamed Shalaby</a>, <a href="https://publications.waset.org/abstracts/search?q=Yasser%20Kamal"> Yasser Kamal</a>, <a href="https://publications.waset.org/abstracts/search?q=Negm%20Shawky"> Negm Shawky</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Mutually unbiased bases (MUBs) have an important role in the field of quantum computation and information. A complete set of these bases can be constructed when the system dimension is the power of the prime. Constructing such complete set in composite dimensions is still an open problem. Recently, the concept of weak mutually unbiased bases (WMUBs) in composite dimensions was introduced. A complete set of such bases can be constructed by combining the MUBs in each subsystem. In this paper, we present a comparative study between MUBs and WMUBs in the context of complex projective t-design. Explicit proofs are presented. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=complex%20projective%20t-design" title="complex projective t-design">complex projective t-design</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20quantum%20systems" title=" finite quantum systems"> finite quantum systems</a>, <a href="https://publications.waset.org/abstracts/search?q=mutually%20unbiased%20bases" title=" mutually unbiased bases"> mutually unbiased bases</a>, <a href="https://publications.waset.org/abstracts/search?q=weak%20mutually%20unbiased%20bases" title=" weak mutually unbiased bases "> weak mutually unbiased bases </a> </p> <a href="https://publications.waset.org/abstracts/33996/weak-mutually-unbiased-bases-versus-mutually-unbiased-bases-in-terms-of-t-designs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33996.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">449</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">59</span> Overview of Fiber Optic Gyroscopes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Abdo">M. Abdo</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Elghandour"> Ahmed Elghandour</a>, <a href="https://publications.waset.org/abstracts/search?q=Khairy%20Eltahlawy"> Khairy Eltahlawy</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Shalaby"> Mohamed Shalaby</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A key development in the field of inertial sensors, fiber-optic gyroscopes (FOGs) are currently thought to be a competitive alternative to mechanical gyroscopes for inertial navigation and control applications. For the past few years, research and development efforts have been conducted all around the world using the FOG as a crucial sensor for high-accuracy inertial navigation systems. The main fundamentals of optical gyros were covered in this essay, followed by discussions of the main types of optical gyros—fiber optic gyroscopes and ring laser gyroscopes—and comparisons between them. We also discussed different types of fiber optic gyros, including interferometric, resonator, and brillion fiber optic gyroscopes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mechanical%20gyros" title="mechanical gyros">mechanical gyros</a>, <a href="https://publications.waset.org/abstracts/search?q=ring%20laser%20gyros" title=" ring laser gyros"> ring laser gyros</a>, <a href="https://publications.waset.org/abstracts/search?q=interferometric%20fiber%20optic%20gyros" title=" interferometric fiber optic gyros"> interferometric fiber optic gyros</a>, <a href="https://publications.waset.org/abstracts/search?q=resonator%20fiber%20optic%20gyros" title=" resonator fiber optic gyros"> resonator fiber optic gyros</a> </p> <a href="https://publications.waset.org/abstracts/168383/overview-of-fiber-optic-gyroscopes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/168383.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">85</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> Overview of Fiber Optic Gyroscopes as Ring Laser Gyros and Fiber Optic Gyros and the Comparison Between Them</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Abdo">M. Abdo</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Shalaby"> Mohamed Shalaby</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A key development in the field of inertial sensors, fiber-optic gyroscopes (FOGs) are currently thought to be a competitive alternative to mechanical gyroscopes for inertial navigation and control applications. For the past few years, research and development efforts have been conducted all around the world using the FOG as a crucial sensor for high-accuracy inertial navigation systems. The main fundamentals of optical gyros were covered in this essay, followed by discussions of the main types of optical gyros and fiber optic gyroscopes and ring laser gyroscopes and comparisons between them. We also discussed different types of fiber optic gyros, including interferometric, resonator, and Brillion fiber optic gyroscopes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mechanical%20gyros" title="mechanical gyros">mechanical gyros</a>, <a href="https://publications.waset.org/abstracts/search?q=ring%20laser%20gyros" title=" ring laser gyros"> ring laser gyros</a>, <a href="https://publications.waset.org/abstracts/search?q=interferometric%20finer%20optic%20gyros" title=" interferometric finer optic gyros"> interferometric finer optic gyros</a>, <a href="https://publications.waset.org/abstracts/search?q=Resonator%20fiber%20optic%20gyros" title=" Resonator fiber optic gyros"> Resonator fiber optic gyros</a> </p> <a href="https://publications.waset.org/abstracts/168331/overview-of-fiber-optic-gyroscopes-as-ring-laser-gyros-and-fiber-optic-gyros-and-the-comparison-between-them" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/168331.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">80</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> An E-coaching Methodology for Higher Education in Saudi Arabia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Essam%20Almuhsin">Essam Almuhsin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ben%20Soh"> Ben Soh</a>, <a href="https://publications.waset.org/abstracts/search?q=Alice%20Li"> Alice Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Azmat%20Ullah"> Azmat Ullah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is widely accepted that university students must acquire new knowledge, skills, awareness, and understanding to increase opportunities for professional and personal growth. The study reveals a significant increase in users engaging in e-coaching activities and a growing need for it during the COVID-19 pandemic. The paper proposes an e-coaching methodology for higher education in Saudi Arabia to address the need for effective coaching in the current online learning environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=role%20of%20e-coaching" title="role of e-coaching">role of e-coaching</a>, <a href="https://publications.waset.org/abstracts/search?q=e-coaching%20in%20higher%20education" title=" e-coaching in higher education"> e-coaching in higher education</a>, <a href="https://publications.waset.org/abstracts/search?q=Saudi%20higher%20education%20environment" title=" Saudi higher education environment"> Saudi higher education environment</a>, <a href="https://publications.waset.org/abstracts/search?q=e-coaching%20methodology" title=" e-coaching methodology"> e-coaching methodology</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20importance%20of%20e-coaching" title=" the importance of e-coaching"> the importance of e-coaching</a> </p> <a href="https://publications.waset.org/abstracts/162872/an-e-coaching-methodology-for-higher-education-in-saudi-arabia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/162872.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">106</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> Characterization of InP Semiconductor Quantum Dot Laser Diode after Am-Be Neutron Irradiation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdulmalek%20Marwan%20Rajkhan">Abdulmalek Marwan Rajkhan</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20S.%20Al%20Ghamdi"> M. S. Al Ghamdi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Damoum"> Mohammed Damoum</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20Banoqitah"> Essam Banoqitah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper is about the Am-Be neutron source irradiation of the InP Quantum Dot Laser diode. A QD LD was irradiated for 24 hours and 48 hours. The laser underwent IV characterization experiments before and after the first and second irradiations. A computer simulation using GAMOS helped in analyzing the given results from IV curves. The results showed an improvement in the QD LD series resistance, current density, and overall ideality factor at all measured temperatures. This is explained by the activation of the QD LD Indium composition to Strontium, ionization of the compound QD LD materials, and the energy deposited to the QD LD. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=quantum%20dot%20laser%20diode%20irradiation" title="quantum dot laser diode irradiation">quantum dot laser diode irradiation</a>, <a href="https://publications.waset.org/abstracts/search?q=effect%20of%20radiation%20on%20QD%20LD" title=" effect of radiation on QD LD"> effect of radiation on QD LD</a>, <a href="https://publications.waset.org/abstracts/search?q=Am-Be%20irradiation%20effect%20on%20SC%20QD%20LD" title=" Am-Be irradiation effect on SC QD LD"> Am-Be irradiation effect on SC QD LD</a> </p> <a href="https://publications.waset.org/abstracts/178642/characterization-of-inp-semiconductor-quantum-dot-laser-diode-after-am-be-neutron-irradiation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/178642.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">62</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">55</span> Comparison between XGBoost, LightGBM and CatBoost Using a Home Credit Dataset</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Essam%20Al%20Daoud">Essam Al Daoud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Gradient boosting methods have been proven to be a very important strategy. Many successful machine learning solutions were developed using the XGBoost and its derivatives. The aim of this study is to investigate and compare the efficiency of three gradient methods. Home credit dataset is used in this work which contains 219 features and 356251 records. However, new features are generated and several techniques are used to rank and select the best features. The implementation indicates that the LightGBM is faster and more accurate than CatBoost and XGBoost using variant number of features and records. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gradient%20boosting" title="gradient boosting">gradient boosting</a>, <a href="https://publications.waset.org/abstracts/search?q=XGBoost" title=" XGBoost"> XGBoost</a>, <a href="https://publications.waset.org/abstracts/search?q=LightGBM" title=" LightGBM"> LightGBM</a>, <a href="https://publications.waset.org/abstracts/search?q=CatBoost" title=" CatBoost"> CatBoost</a>, <a href="https://publications.waset.org/abstracts/search?q=home%20credit" title=" home credit"> home credit</a> </p> <a href="https://publications.waset.org/abstracts/104573/comparison-between-xgboost-lightgbm-and-catboost-using-a-home-credit-dataset" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104573.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">171</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> An Accurate Method for Phylogeny Tree Reconstruction Based on a Modified Wild Dog Algorithm</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Essam%20Al%20Daoud">Essam Al Daoud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study solves a phylogeny problem by using modified wild dog pack optimization. The least squares error is considered as a cost function that needs to be minimized. Therefore, in each iteration, new distance matrices based on the constructed trees are calculated and used to select the alpha dog. To test the suggested algorithm, ten homologous genes are selected and collected from National Center for Biotechnology Information (NCBI) databanks (i.e., 16S, 18S, 28S, Cox 1, ITS1, ITS2, ETS, ATPB, Hsp90, and STN). The data are divided into three categories: 50 taxa, 100 taxa and 500 taxa. The empirical results show that the proposed algorithm is more reliable and accurate than other implemented methods. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=least%20square" title="least square">least square</a>, <a href="https://publications.waset.org/abstracts/search?q=neighbor%20joining" title=" neighbor joining"> neighbor joining</a>, <a href="https://publications.waset.org/abstracts/search?q=phylogenetic%20tree" title=" phylogenetic tree"> phylogenetic tree</a>, <a href="https://publications.waset.org/abstracts/search?q=wild%20dog%20pack" title=" wild dog pack"> wild dog pack</a> </p> <a href="https://publications.waset.org/abstracts/42453/an-accurate-method-for-phylogeny-tree-reconstruction-based-on-a-modified-wild-dog-algorithm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42453.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">320</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">53</span> Exploring Cybersecurity and Phishing Attacks within Healthcare Institutions in Saudi Arabia: A Narrative Review</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ebtesam%20Shadadi">Ebtesam Shadadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Rasha%20Ibrahim"> Rasha Ibrahim</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20Ghadafi"> Essam Ghadafi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Phishing poses a significant threat as a cybercrime by tricking end users into revealing their confidential and sensitive information. Attackers often manipulate victims to achieve their malicious goals. The increasing prevalence of Phishing has led to extensive research on this issue, including studies focusing on phishing attempts in healthcare institutions in the Kingdom of Saudi Arabia. This paper explores the importance of analyzing phishing attacks, specifically focusing on those targeting the healthcare industry. The study delves into the tactics, obstacles, and remedies associated with these attacks, all while considering the implications for Saudi Vision 2030. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phishing" title="phishing">phishing</a>, <a href="https://publications.waset.org/abstracts/search?q=cybersecurity" title=" cybersecurity"> cybersecurity</a>, <a href="https://publications.waset.org/abstracts/search?q=cyber%20threat" title=" cyber threat"> cyber threat</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20engineering" title=" social engineering"> social engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=vision%202030" title=" vision 2030"> vision 2030</a> </p> <a href="https://publications.waset.org/abstracts/186544/exploring-cybersecurity-and-phishing-attacks-within-healthcare-institutions-in-saudi-arabia-a-narrative-review" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186544.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">52</span> Effect of Low Level Laser for Athletic Achilles Tendinopathy: A Systematic Review</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sameh%20Eldaly">Sameh Eldaly</a>, <a href="https://publications.waset.org/abstracts/search?q=Rola%20Essam"> Rola Essam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objective: The purpose of this study was to determine the benefits of low-level laser therapy for Athletic Achilles Tendinopathy. Data sources: Search strategies were conducted on 2 Randomized control trial and one pilot study. Results: three trials (103 participants) were analyzed. Laser therapy associated to eccentric exercises, when compared to eccentric exercises and placebo, had low to very low certainty of evidence in pain and function assessment. Conclusion: those three trials evidenced low to very low effect of LLLT, and the results are insufficient to support the routine use LLLT for Achilles tendinopathy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=achilles%20tendinopathy" title="achilles tendinopathy">achilles tendinopathy</a>, <a href="https://publications.waset.org/abstracts/search?q=evidence-based" title=" evidence-based"> evidence-based</a>, <a href="https://publications.waset.org/abstracts/search?q=low-level%20laser%20therapy" title=" low-level laser therapy"> low-level laser therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=review" title=" review"> review</a> </p> <a href="https://publications.waset.org/abstracts/165512/effect-of-low-level-laser-for-athletic-achilles-tendinopathy-a-systematic-review" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165512.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">81</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> Seasonal Heat Stress Effect on Cholesterol, Estradiol and Progesterone during Follicular Development in Egyptian Buffalo</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Heba%20F.%20Hozyen">Heba F. Hozyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Hodallah%20H.%20Ahmed"> Hodallah H. Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20I.%20A.%20Shalaby"> S. I. A. Shalaby</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20E.%20S.%20Essawy"> G. E. S. Essawy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Biochemical and hormonal changes that occur in both follicular fluid and blood are involved in the control of ovarian physiology. The present study was conducted on follicular fluid and serum samples obtained from 708 buffaloes. Samples were examined for estradiol, progesterone, and cholesterol concentrations in relation to seasonal changes, ovarian follicular size, and stage of estrous cycle. The obtained results revealed that follicular fluid and serum levels of estradiol, progesterone, and cholesterol were significantly lower during summer and autumn when compared to winter and spring seasons. With the increase in follicular size, the follicular fluid levels of progesterone and cholesterol were significantly decreased, while estradiol levels were significantly increased. Estradiol and progesterone levels were significantly higher in follicular fluid than blood, while cholesterol was significantly lower in follicular fluid than serum. In conclusion, the current study threw a light on the hormonal changes in the follicular fluid and blood under the effect of heat stress which could be related to the low fertility of buffalo in the summer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=buffalo" title="buffalo">buffalo</a>, <a href="https://publications.waset.org/abstracts/search?q=follicular%20fluid" title=" follicular fluid"> follicular fluid</a>, <a href="https://publications.waset.org/abstracts/search?q=folliculogenesis" title=" folliculogenesis"> folliculogenesis</a>, <a href="https://publications.waset.org/abstracts/search?q=seasonal%20changes" title=" seasonal changes"> seasonal changes</a>, <a href="https://publications.waset.org/abstracts/search?q=steroids" title=" steroids"> steroids</a> </p> <a href="https://publications.waset.org/abstracts/37224/seasonal-heat-stress-effect-on-cholesterol-estradiol-and-progesterone-during-follicular-development-in-egyptian-buffalo" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37224.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">511</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> Software Obsolescence Drivers in Aerospace: An Industry Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ra%C3%BAl%20Gonz%C3%A1lez%20Mu%C3%B1oz">Raúl González Muñoz</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20Shehab"> Essam Shehab</a>, <a href="https://publications.waset.org/abstracts/search?q=Martin%20Weinitzke"> Martin Weinitzke</a>, <a href="https://publications.waset.org/abstracts/search?q=Chris%20Fowler"> Chris Fowler</a>, <a href="https://publications.waset.org/abstracts/search?q=Paul%20Baguley"> Paul Baguley</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Software applications have become crucial for the aerospace industry, providing a wide range of functionalities and capabilities. However, due to the considerable time difference between aircraft and software life cycles, obsolescence has turned into a major challenge for industry in last decades. This paper aims to provide a view on the different causes of software obsolescence within aerospace industry, as well as a perception on the importance of each of them. The key research question addressed is what drives software obsolescence in the aerospace industry, managing large software application portfolios. This question has been addressed by conducting firstly an in depth review of current literature and secondly by arranging an industry workshop with professionals from aerospace and consulting companies. The result is a set of drivers of software obsolescence, distributed among three different environments and several domains. By incorporating monitoring methodologies to assess those software obsolescence drivers, benefits in maintenance efforts and operations disruption avoidance are expected. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aerospace%20industry" title="aerospace industry">aerospace industry</a>, <a href="https://publications.waset.org/abstracts/search?q=obsolescence%20drivers" title=" obsolescence drivers"> obsolescence drivers</a>, <a href="https://publications.waset.org/abstracts/search?q=software%20lifecycle" title=" software lifecycle"> software lifecycle</a>, <a href="https://publications.waset.org/abstracts/search?q=software%20obsolescence" title=" software obsolescence"> software obsolescence</a> </p> <a href="https://publications.waset.org/abstracts/72049/software-obsolescence-drivers-in-aerospace-an-industry-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72049.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">411</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> Study of Changes in the Pulsation Period of Six Cepheid Variables</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Abdel%20Sabour">Mohamed Abdel Sabour</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Nouh"> Mohamed Nouh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ian%20Stevans"> Ian Stevans</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20Elkholy"> Essam Elkholy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We study the period change of six Cepheids using 19376 accurate flux observations of the Solar Mass Ejection Imager (SMEI) onboard the Coriolis spacecraft. All observations for the six Cepheids have been derived as templates for each star, independent of the specific sites utilized to establish and update the O-C values. Sometimes, sinusoidal patterns are superimposed on the star's O-C changes, which cannot be regarded as random fluctuations in the pulsation period. Random period changes were detected and computed using Eddington's and Plakidis's approaches. A comparison of the observed and predicted period change reveals a good agreement with some published models and a very substantial divergence with others. Between the reported period change and that estimated by the current technique, a linear fit with a correlation coefficient of 90.08 percent was obtained. The temporal rate of period change in Cepheid stars might be connected to how well these stars' mass losses are known today. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cepheids" title="cepheids">cepheids</a>, <a href="https://publications.waset.org/abstracts/search?q=period%20change" title=" period change"> period change</a>, <a href="https://publications.waset.org/abstracts/search?q=mass%20loss" title=" mass loss"> mass loss</a>, <a href="https://publications.waset.org/abstracts/search?q=O-C%20changes" title=" O-C changes"> O-C changes</a>, <a href="https://publications.waset.org/abstracts/search?q=period%20change" title=" period change"> period change</a>, <a href="https://publications.waset.org/abstracts/search?q=mass%20loss" title=" mass loss"> mass loss</a>, <a href="https://publications.waset.org/abstracts/search?q=O-C" title=" O-C"> O-C</a> </p> <a href="https://publications.waset.org/abstracts/187496/study-of-changes-in-the-pulsation-period-of-six-cepheid-variables" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/187496.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">41</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> Investigation of the Effect of Grid Size on External Store Separation Trajectory Using CFD</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alaa%20A.%20Osman">Alaa A. Osman</a>, <a href="https://publications.waset.org/abstracts/search?q=Amgad%20M.%20Bayoumy%20Aly"> Amgad M. Bayoumy Aly</a>, <a href="https://publications.waset.org/abstracts/search?q=Ismail%20El%20baialy"> Ismail El baialy</a>, <a href="https://publications.waset.org/abstracts/search?q=Osama%20E.%20Abdellatif"> Osama E. Abdellatif</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20E.%20Khallil"> Essam E. Khallil</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a numerical simulation of a finned store separating from a wing-pylon configuration has been studied and validated. A dynamic unstructured tetrahedral mesh approach is accomplished by using three grid sizes to numerically solving the discretized three dimensional, inviscid and compressible Navier-stokes equations. The method used for computations of separation of an external store assuming quasi-steady flow condition. Computations of quasi-steady flow have been directly coupled to a six degree-of-freedom (6DOF) rigid-body motion code to generate store trajectories. The pressure coefficients at four different angular cuts and time histories of various trajectory parameters during the store separation are compared for every grid size with published experimental data. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CFD%20modelling" title="CFD modelling">CFD modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=transonic%20store%20separation" title=" transonic store separation"> transonic store separation</a>, <a href="https://publications.waset.org/abstracts/search?q=quasi-steady%20flow" title=" quasi-steady flow"> quasi-steady flow</a>, <a href="https://publications.waset.org/abstracts/search?q=moving-body%20trajectories" title=" moving-body trajectories"> moving-body trajectories</a> </p> <a href="https://publications.waset.org/abstracts/20045/investigation-of-the-effect-of-grid-size-on-external-store-separation-trajectory-using-cfd" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20045.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">390</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">47</span> Revisionism in Literature: Deconstructing Patriarchal Ideals in Margaret Atwood's The Penelopiad</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Essam%20Abdelhamid%20Hegazy">Essam Abdelhamid Hegazy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper aims to read Margaret Atwood's The Penelopiad (2005) via a revisionist and deconstructive approach. This novel is a postmodernist exploration of the grand-narrative myth The Odyssey (800 BC) by Homer, who portrayed the heroic warrior and the faithful wife as the epitome of perfect male and female models _examples whom all must follow and mimic. In Atwood's narrative, the same two hero models are the two great tricksters who are willing to perform any sort of obnoxious act for achieving their goals. This research tries to examine how Atwood tried to synthesize the change in character’s narratives leading to the humanization of the perfect hero and the ideal wife. The researcher has used a multidisciplinary approach where the feminist, revisionist and deconstructive theories were implemented to identify and find out the new interpretations of the myths that center the experiences and perspectives of women. Research findings are that revisionist approach was applied through giving an opportunity to the victimized and the voiceless to speak out and retaliate against their prosecutions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=margret%20atwood" title="margret atwood">margret atwood</a>, <a href="https://publications.waset.org/abstracts/search?q=patriarchal" title=" patriarchal"> patriarchal</a>, <a href="https://publications.waset.org/abstracts/search?q=penelopiad" title=" penelopiad"> penelopiad</a>, <a href="https://publications.waset.org/abstracts/search?q=revisionism" title=" revisionism"> revisionism</a> </p> <a href="https://publications.waset.org/abstracts/168755/revisionism-in-literature-deconstructing-patriarchal-ideals-in-margaret-atwoods-the-penelopiad" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/168755.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">82</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">46</span> An Improved Ant Colony Algorithm for Genome Rearrangements</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Essam%20Al%20Daoud">Essam Al Daoud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Genome rearrangement is an important area in computational biology and bioinformatics. The basic problem in genome rearrangements is to compute the edit distance, i.e., the minimum number of operations needed to transform one genome into another. Unfortunately, unsigned genome rearrangement problem is NP-hard. In this study an improved ant colony optimization algorithm to approximate the edit distance is proposed. The main idea is to convert the unsigned permutation to signed permutation and evaluate the ants by using Kaplan algorithm. Two new operations are added to the standard ant colony algorithm: Replacing the worst ants by re-sampling the ants from a new probability distribution and applying the crossover operations on the best ants. The proposed algorithm is tested and compared with the improved breakpoint reversal sort algorithm by using three datasets. The results indicate that the proposed algorithm achieves better accuracy ratio than the previous methods. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ant%20colony%20algorithm" title="ant colony algorithm">ant colony algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=edit%20distance" title=" edit distance"> edit distance</a>, <a href="https://publications.waset.org/abstracts/search?q=genome%0D%0Abreakpoint" title=" genome breakpoint"> genome breakpoint</a>, <a href="https://publications.waset.org/abstracts/search?q=genome%20rearrangement" title=" genome rearrangement"> genome rearrangement</a>, <a href="https://publications.waset.org/abstracts/search?q=reversal%20sort" title=" reversal sort"> reversal sort</a> </p> <a href="https://publications.waset.org/abstracts/5601/an-improved-ant-colony-algorithm-for-genome-rearrangements" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5601.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">344</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> Survey of Neonatologists’ Burnout on a Neonatal Surgical Unit: Audit Study from Cairo University Specialized Pediatric Hospital</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahmoud%20Tarek">Mahmoud Tarek</a>, <a href="https://publications.waset.org/abstracts/search?q=Alaa%20Obeida"> Alaa Obeida</a>, <a href="https://publications.waset.org/abstracts/search?q=Mai%20Magdy"> Mai Magdy</a>, <a href="https://publications.waset.org/abstracts/search?q=Khalid%20Hussein"> Khalid Hussein</a>, <a href="https://publications.waset.org/abstracts/search?q=Aly%20Shalaby"> Aly Shalaby</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: More doctors are complaining of burnout than before, Burnout is a state of physical and mental exhaustion caused by the doctor’s lifestyle, unfortunately, Medical errors are also more likely in those suffering from burnout and these may result in malpractice suits. Methodology: It is a retrospective audit of burnout response on all neonatologists over a 9 months period. We gathered data using burnout questionnaire, it was obtained from 23 physicians, the physicians divided into 5 categories according to the final score of the 28 questions in the questionnaire. Category 1 with score from 28-38 with almost no work stress, category 2 with score (38-50) who express a low amount of job related stress, category 3 with score (51-70) with moderate amount of stress, category 4 with score (71-90) those express a high amount of job stress and begun to burnout, category 5 with score (91 and above) who are under a dangerous amount of stress and advanced stage of burnout. Results: 33 neonatologists have received the questionnaire, 23 responses were sent back with a response rate of 69.6%. The results showed that 61% of physicians fall in category 4, 31% of the physician in category 5, while 8% of physicians equally distributed between category 2 and 3 (4% each of them). On the other hand, there is no physician present in category 1. Conclusion: Burnout is prevalent in SNICUs, So interventions to minimize burnout prevalence may be of greater importance as this may be reflected indirectly on medical conditions of the patients and physicians, efforts should be done to decrease this high rate of burnout. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cairo" title="Cairo">Cairo</a>, <a href="https://publications.waset.org/abstracts/search?q=work%20overload" title=" work overload"> work overload</a>, <a href="https://publications.waset.org/abstracts/search?q=exhaustion" title=" exhaustion"> exhaustion</a>, <a href="https://publications.waset.org/abstracts/search?q=surgery" title=" surgery"> surgery</a>, <a href="https://publications.waset.org/abstracts/search?q=neonatal%20ICU" title=" neonatal ICU"> neonatal ICU</a> </p> <a href="https://publications.waset.org/abstracts/93428/survey-of-neonatologists-burnout-on-a-neonatal-surgical-unit-audit-study-from-cairo-university-specialized-pediatric-hospital" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/93428.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">213</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> The Effect of Street Dust on Urban Environment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Turki%20M.%20Habeebullah">Turki M. Habeebullah</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdel%20Hameed%20A.%20A.%20Awad"> Abdel Hameed A. A. Awad</a>, <a href="https://publications.waset.org/abstracts/search?q=Said%20Munir"> Said Munir</a>, <a href="https://publications.waset.org/abstracts/search?q=Atif%20M.%20F.%20Mohammed"> Atif M. F. Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20A.%20Morsy"> Essam A. Morsy</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdulaziz%20R.%20Seroji"> Abdulaziz R. Seroji</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Street dust has been knoweldged as an important source of air pollution. It does not remain deposited in a place for long, as it is easily resuspended back into the atmosphere. Street dust is a complex mixture derived from different sources: Deposited dust, traffic, tire, and brake wear, construction and demolition processes. The present study aims to evaluate the elementals ”iron, calcium, lead, cadmium, nickel, silicon, and selenium” and microbial “bacteria and fungi” contents associated street dust at the holy mosque areas. The street dust was collected by sweeping an arera~1m2 along the both sides of the road. The particles with diameter ≤ 1.7 µm constitued the highest percentages of the total particulate ≤45 µm. Moreover, The crustal species: iron and calcium were found in the highest concentrations, and proof that demolition and constricution were the main source of street dust. Also, the low biodiversity of microorganisms is attributed to severe weather conditions and characteristics of the arid environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dust" title="dust">dust</a>, <a href="https://publications.waset.org/abstracts/search?q=microbial" title=" microbial"> microbial</a>, <a href="https://publications.waset.org/abstracts/search?q=environment" title=" environment"> environment</a>, <a href="https://publications.waset.org/abstracts/search?q=street" title=" street"> street</a> </p> <a href="https://publications.waset.org/abstracts/30427/the-effect-of-street-dust-on-urban-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30427.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">553</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> Prevalence of Bovine Cysticercosis in Egypt and the Cysticidal Effect of Two Extracts Obtained from Balanites Aegyptiaca and Moringa Oleifera on Mice Model Affected with T. Saginata Cysticerci</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Omnia%20M.%20Kandil">Omnia M. Kandil</a>, <a href="https://publications.waset.org/abstracts/search?q=Noha%20M.%20F.%20Hassan"> Noha M. F. Hassan</a>, <a href="https://publications.waset.org/abstracts/search?q=Doaa%20Sedky"> Doaa Sedky</a>, <a href="https://publications.waset.org/abstracts/search?q=Hatem%20A.%20Shalaby"> Hatem A. Shalaby</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20M.%20Ashry"> Heba M. Ashry</a>, <a href="https://publications.waset.org/abstracts/search?q=Nadia%20M.%20T.%20Abu%20El%20Ezz"> Nadia M. T. Abu El Ezz</a>, <a href="https://publications.waset.org/abstracts/search?q=Sahar%20M.%20Kandeel"> Sahar M. Kandeel</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20S.%20Abdelfattah%20Ying%20L"> Mohamed S. Abdelfattah Ying L</a>, <a href="https://publications.waset.org/abstracts/search?q=Ebtesam%20M.%20Al-Olayan"> Ebtesam M. Al-Olayan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the present study was to determine the prevalence of bovine cysticercosis in both cattle and buffaloes in Egypt and to assess the cysticidal efficacy of Balanites aegyptiacafruits (B. aegyptiaca) and Moringa oleiferaseeds (M. oleifera) extracts in experimentally infected mice. The study detected the level of tumor necrosis factor (TNF-α) to monitor the immune and inflammatory responses of experimentally infected mice. Through meat inspection, a total number of 2125 male bovines, 2 to 5 years old (1125 cattle and 1000 buffaloes) were examined at official abattoirs in Cairo Governorate. The prevalence of the disease among bovine was 7.8%, (6.31% of cattle and 9.5% of buffaloes). A decrease in the number of cysticerci was found in all treated mice groups, and up to 88% reduction was achieved in the B. aegyptiaca-treated group; higher than that was recorded in both M. oleifera (72.23%) and albendazole-treated ones (80.56%). Postmortem findings proved that M. oleifera and B. aegyptiaca reduced cysticerci numbers comparable to a commercial anthelmintic. The study showed a significant decrease (P<0.001) in TNF-α levels after treatment with Balanites and Moringa extracts, compared with the untreated control and the albendazole-treated groups. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=prevalence" title="prevalence">prevalence</a>, <a href="https://publications.waset.org/abstracts/search?q=bovine%20cysticercossis" title=" bovine cysticercossis"> bovine cysticercossis</a>, <a href="https://publications.waset.org/abstracts/search?q=extracts" title=" extracts"> extracts</a>, <a href="https://publications.waset.org/abstracts/search?q=mice" title=" mice"> mice</a> </p> <a href="https://publications.waset.org/abstracts/179143/prevalence-of-bovine-cysticercosis-in-egypt-and-the-cysticidal-effect-of-two-extracts-obtained-from-balanites-aegyptiaca-and-moringa-oleifera-on-mice-model-affected-with-t-saginata-cysticerci" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/179143.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">116</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> Enhancing Greenhouse Productivity and Energy Efficiency Through UV-IR Reflective Coatings and Dust Mitigation: A Case Study in Saudi Arabia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tayirjan%20Taylor%20Isimjan">Tayirjan Taylor Isimjan</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20Jamea"> Essam Jamea</a>, <a href="https://publications.waset.org/abstracts/search?q=Muien%20Qaryouti"> Muien Qaryouti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The demand for efficient greenhouse production is escalating, necessitating continuous improvements in controlled plant growth environments. Central to maximizing growth are critical light-related factors, including quantity, quality, and geometric distribution of intercepted radiation. This becomes particularly crucial in regions like the Middle East, characterized by high solar radiation and dusty atmospheric conditions. Existing greenhouse technologies often rely on additional expensive equipment to manage light conditions effectively. In this study, we propose a distinct approach employing functional coatings to mitigate dust and block UV and IR radiation, thereby conserving energy and enhancing productivity. By combining UV-IR reflective coatings with dust mitigation strategies, we aim to address both environmental challenges and energy consumption issues faced by greenhouse agriculture in Saudi Arabia. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=greenhouse" title="greenhouse">greenhouse</a>, <a href="https://publications.waset.org/abstracts/search?q=UV-IR%20reflective%20coatings" title=" UV-IR reflective coatings"> UV-IR reflective coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=dust%20mitigation" title=" dust mitigation"> dust mitigation</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20efficiency" title=" energy efficiency"> energy efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=productivity" title=" productivity"> productivity</a> </p> <a href="https://publications.waset.org/abstracts/182893/enhancing-greenhouse-productivity-and-energy-efficiency-through-uv-ir-reflective-coatings-and-dust-mitigation-a-case-study-in-saudi-arabia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182893.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">41</span> Risk Assessment of Particulate Matter (PM10) in Makkah, Saudi Arabia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Turki%20M.%20Habeebullah">Turki M. Habeebullah</a>, <a href="https://publications.waset.org/abstracts/search?q=Atef%20M.%20F.%20Mohammed"> Atef M. F. Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20A.%20Morsy"> Essam A. Morsy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent decades, particulate matter (PM10) have received much attention due to its potential adverse health impact and the subsequent need to better control or regulate these pollutants. The aim of this paper is focused on study risk assessment of PM10 in four different districts (Shebikah, Masfalah, Aziziyah, Awali) in Makkah, Saudi Arabia during the period from 1 Ramadan 1434 AH - 27 Safar 1435 AH. samples was collected by using Low Volume Sampler (LVS Low Volume Sampler) device and filtration method for estimating the total concentration of PM10. The study indicated that the mean PM10 concentrations were 254.6 (186.1 - 343.2) µg/m3 in Shebikah, 184.9 (145.6 - 271.4) µg/m3 in Masfalah, 162.4 (92.4 - 253.8) µg/m3 in Aziziyah, and 56.0 (44.5 - 119.8) µg/m3 in Awali. These values did not exceed the permissible limits in PME (340 µg/m3 as daily average). Furthermore, health assessment is carried out using AirQ2.2.3 model to estimate the number of hospital admissions due to respiratory diseases. The cumulative number of cases per 100,000 were 1534 (18-3050 case), which lower than that recorded in the United States, Malaysia. The concentration response coefficient was 0.49 (95% CI 0.05 - 0.70) per 10 μg/m3 increase of PM10. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=air%20pollution" title="air pollution">air pollution</a>, <a href="https://publications.waset.org/abstracts/search?q=respiratory%20diseases" title=" respiratory diseases"> respiratory diseases</a>, <a href="https://publications.waset.org/abstracts/search?q=airQ2.2.3" title=" airQ2.2.3"> airQ2.2.3</a>, <a href="https://publications.waset.org/abstracts/search?q=Makkah" title=" Makkah"> Makkah</a> </p> <a href="https://publications.waset.org/abstracts/28213/risk-assessment-of-particulate-matter-pm10-in-makkah-saudi-arabia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28213.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">453</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">40</span> Impact of Ethnomedicinal Plants on Toothpaste Improvement</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muna%20Jalal%20Ali">Muna Jalal Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20A.%20Makky"> Essam A. Makky</a>, <a href="https://publications.waset.org/abstracts/search?q=Mashitah%20M.%20Yusoff"> Mashitah M. Yusoff</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objectives: The aim of this study to evaluate the antimicrobial susceptibility of combined toothpaste with medicinal plants and the relations between the commercial toothpaste to its price and the patient age as well. Materials and Methods: Oral isolates of different patients aged 3 to 60 years were obtained, purified, and tested against four different ethnomedicinal plant extracts for antimicrobial activity. A total of 10 different commercial toothpastes (different brands and prices) were collected from the market, and the combined action of the medicinal plants and toothpaste was studied. Results: We found a higher bacterial population in the age group of 3–40 years than the group of 40–60 years, with approximately 44% and 32%, respectively. The combined action of ethanolic extract (alone) against oral isolates showed a synergistic effect, with 32.20, 30.50, and 25.42% for combinations A (Ci/Ca), B (Ci/Ca/P), and C (Ci/Ca/P/N), respectively. By contrast, the combined action of ethnomedicinal plants with 10 different toothpastes improved the antimicrobial sensitivity by 60, 100, and 0% for combinations A, B, and C respectively. Clinical relevance: The ethanolic extract of only combinations A and B with commercial toothpaste showed high antibacterial activity against oral isolates and the effectiveness of toothpaste is not related to the price. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microbial%20evolution" title="microbial evolution">microbial evolution</a>, <a href="https://publications.waset.org/abstracts/search?q=oral%20isolates" title=" oral isolates"> oral isolates</a>, <a href="https://publications.waset.org/abstracts/search?q=ethnomedicinal%20plants" title=" ethnomedicinal plants"> ethnomedicinal plants</a>, <a href="https://publications.waset.org/abstracts/search?q=antimicrobial%20activity" title=" antimicrobial activity"> antimicrobial activity</a>, <a href="https://publications.waset.org/abstracts/search?q=toothpaste" title=" toothpaste"> toothpaste</a> </p> <a href="https://publications.waset.org/abstracts/53260/impact-of-ethnomedicinal-plants-on-toothpaste-improvement" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/53260.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">315</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> Design and Testing of Electrical Capacitance Tomography Sensors for Oil Pipeline Monitoring</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sidi%20M.%20A.%20Ghaly">Sidi M. A. Ghaly</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20O.%20Khan"> Mohammad O. Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Shalaby"> Mohammed Shalaby</a>, <a href="https://publications.waset.org/abstracts/search?q=Khaled%20A.%20Al-Snaie"> Khaled A. Al-Snaie</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Electrical capacitance tomography (ECT) is a valuable, non-invasive technique used to monitor multiphase flow processes, especially within industrial pipelines. This study focuses on the design, testing, and performance comparison of ECT sensors configured with 8, 12, and 16 electrodes, aiming to evaluate their effectiveness in imaging accuracy, resolution, and sensitivity. Each sensor configuration was designed to capture the spatial permittivity distribution within a pipeline cross-section, enabling visualization of phase distribution and flow characteristics such as oil and water interactions. The sensor designs were implemented and tested in closed pipes to assess their response to varying flow regimes. Capacitance data collected from each electrode configuration were reconstructed into cross-sectional images, enabling a comparison of image resolution, noise levels, and computational demands. Results indicate that the 16-electrode configuration yields higher image resolution and sensitivity to phase boundaries compared to the 8- and 12-electrode setups, making it more suitable for complex flow visualization. However, the 8 and 12-electrode sensors demonstrated advantages in processing speed and lower computational requirements. This comparative analysis provides critical insights into optimizing ECT sensor design based on specific industrial requirements, from high-resolution imaging to real-time monitoring needs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=capacitance%20tomography" title="capacitance tomography">capacitance tomography</a>, <a href="https://publications.waset.org/abstracts/search?q=modeling" title=" modeling"> modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=electrode" title=" electrode"> electrode</a>, <a href="https://publications.waset.org/abstracts/search?q=permittivity" title=" permittivity"> permittivity</a>, <a href="https://publications.waset.org/abstracts/search?q=fluid%20dynamics" title=" fluid dynamics"> fluid dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=imaging%20sensitivity%20measurement" title=" imaging sensitivity measurement"> imaging sensitivity measurement</a> </p> <a href="https://publications.waset.org/abstracts/194673/design-and-testing-of-electrical-capacitance-tomography-sensors-for-oil-pipeline-monitoring" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/194673.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">11</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> Nagami Kumkuat: A Source of Antiviral and Antimicrobial Bioactive Compounds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Howaida%20I.%20Abd-Alla">Howaida I. Abd-Alla</a>, <a href="https://publications.waset.org/abstracts/search?q=Nagwa%20M.%20M.%20Shalaby"> Nagwa M. M. Shalaby</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The fruit rind of Fortunella margarita (Nagami Kumkuat) was investigated for its chemical constituents. Thirteen metabolites were obtained and classified into, a sterol; β-sitosterol (1) and twelve phenolic compounds, three coumarins; xanthotoxin (2), isopimpinellin (3), umbelliferone (4), nine flavonoids of O-glycosides of flavone; apigenin-7-O-β-D-glucopyranoside (5), apigenin-7-O-rhamnoglucoside (rhoifolin) (6), C-glycosides; vitexin (7), vicenin II (8), and the methoxylated; 6-methoxyapigenin-7-methyl ether (9) and tangeretin (10) as well as flavanones class; naringenin (11), liquiritigenin (12), hesperdin (hesperetin-7-rhamnoglucoside) (13). All compounds were identified for the first time in F. margarita except compound (8). The major glycosides 5, 6, and 13 and total crude extract showed potential antiviral activity against live Newcastle disease virus vaccine strains (Komarov and LaSota) and live infectious bursitis viruses vaccine strain D78 replication in VERO cell cultures and on specific pathogen-free embryonated chicken eggs. Antiviral inhibitory concentration fifty (IC50), cytotoxic concentration fifty (CC50), and therapeutic index (TI) were calculated. In addition, the extract and compounds 7 and 13 showed marked antimicrobial activity against different strains of fungi, Gram-positive and negative bacteria, including some foodborne pathogens of animal origin, caused human disease. These results suggested that the extract of F. margarita may be considered potentially useful as a source of natural antiviral and antimicrobial agents. It can be used as an ingredient for functional food and/or pharmaceuticals. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antimicrobial" title="antimicrobial">antimicrobial</a>, <a href="https://publications.waset.org/abstracts/search?q=antiviral" title=" antiviral"> antiviral</a>, <a href="https://publications.waset.org/abstracts/search?q=Fortunella%20margarita" title=" Fortunella margarita"> Fortunella margarita</a>, <a href="https://publications.waset.org/abstracts/search?q=Nagami%20Kumkuat" title=" Nagami Kumkuat"> Nagami Kumkuat</a>, <a href="https://publications.waset.org/abstracts/search?q=phenolic%20secondary%20metabolites" title=" phenolic secondary metabolites"> phenolic secondary metabolites</a> </p> <a href="https://publications.waset.org/abstracts/140746/nagami-kumkuat-a-source-of-antiviral-and-antimicrobial-bioactive-compounds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140746.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">206</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> 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">36</span> Investigation of Stabilized Turbulent Diffusion Flames Using Synthesis Fuel with Different Burner Configurations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Moataz%20Medhat">Moataz Medhat</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20Khalil"> Essam Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=Hatem%20Haridy"> Hatem Haridy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study investigates the flame structure of turbulent diffusion flame of synthesis fuel in a 300 KW swirl-stabilized burner. The three-dimensional model adopts a realizable k-ε turbulent scheme interacting with two-dimensional PDF combustion scheme by applying flamelet concept. The study reveals more characteristics on turbulent diffusion flame of synthesis fuel when changing the inlet air swirl number and the burner quarl angle. Moreover, it concerns with studying the effect of flue gas recirculation and staging with taking radiation effect into consideration. The comparison with natural gas was investigated. The study showed two zones of recirculation, the primary one is at the center of the furnace, and the location of the secondary one varies by changing the quarl angle of the burner. The results revealed an increase in temperature in the external recirculation zone as a result of increasing the swirl number of the inlet air stream. Also, it was found that recirculating part of the combustion products decreases pollutants formation especially nitrogen monoxide. The predicted results showed a great agreement when compared with the experiments. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gas%20turbine" title="gas turbine">gas turbine</a>, <a href="https://publications.waset.org/abstracts/search?q=syngas" title=" syngas"> syngas</a>, <a href="https://publications.waset.org/abstracts/search?q=analysis" title=" analysis"> analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=recirculation" title=" recirculation"> recirculation</a> </p> <a href="https://publications.waset.org/abstracts/59071/investigation-of-stabilized-turbulent-diffusion-flames-using-synthesis-fuel-with-different-burner-configurations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59071.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">273</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">35</span> A Modified Periodic 2D Cellular Re-Entrant Honeycomb Model to Enhance the Auxetic Elastic Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sohaib%20Z.%20Khan">Sohaib Z. Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=Farrukh%20Mustahsan"> Farrukh Mustahsan</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20R.%20I.%20Mahmoud"> Essam R. I. Mahmoud</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20H.%20Masood"> S. H. Masood</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Materials or structures that contract laterally on the application of a compressive load and vice versa are said to be Auxetic materials which exhibit Negative Poisson’s Ratio (NPR). Numerous auxetic structures are proposed in the literature. One of the most studied periodic auxetic structure is the re-entrant honeycomb model. In this paper, a modified re-entrant model is proposed to enhance the auxetic behavior. The paper aimed to investigate the elastic behaviour of the proposed model to improve Young’s modulus and NPR by evaluating the analytical model. Finite Element Analysis (FEA) is also conducted to support the analytical results. A significant increment in Young’s modulus and NPR can be achieved in one of the two orthogonal directions of the loading at the cost of compromising these values in other direction. The proposed modification resulted in lower relative densities when compared to the existing re-entrant honeycomb structure. A trade-off in the elastic properties in one direction at low relative density makes the proposed model suitable for uni-direction applications where higher stiffness and NPR is required, and strength to weight ratio is important. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=2D%20model" title="2D model">2D model</a>, <a href="https://publications.waset.org/abstracts/search?q=auxetic%20materials" title=" auxetic materials"> auxetic materials</a>, <a href="https://publications.waset.org/abstracts/search?q=re-entrant%20honeycomb" title=" re-entrant honeycomb"> re-entrant honeycomb</a>, <a href="https://publications.waset.org/abstracts/search?q=negative%20Poisson%27s%20ratio" title=" negative Poisson's ratio"> negative Poisson's ratio</a> </p> <a href="https://publications.waset.org/abstracts/110382/a-modified-periodic-2d-cellular-re-entrant-honeycomb-model-to-enhance-the-auxetic-elastic-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/110382.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">138</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> Antioxidant and Cytotoxic Effects of Different Extracts of Fruit Peels Against Three Cancer Cell Lines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Emad%20A.%20Shalaby">Emad A. Shalaby</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cancer is a disease that causes abnormal cell proliferation and invades nearby tissues. Lung cancer is the second most frequent cancer worldwide. Natural anti-cancer drugs have been developed with low side effects and toxicity. Citrus peels and extracts have been demonstrated to have significant pharmacological and physiological effects as a result of the high concentration of phenolic compounds found in citrus fruits, particularly peels. Tangerine peels can serve as an effective source of bioactive substances such as phenolics, flavonoids, and catechins, which have antioxidant, antibacterial, anticancer, and anti-inflammatory properties. Consequently, this work aims to determine the anticancer activity of ethanol extract of Tangerine peels against the A549 cell line and identify the phenolic compound profile (19 compounds) by using HPLC. Anticancer and antioxidant potentials of the extract were evaluated by MTT assay and TLC- TLC-bioautography sprayed with DPPH reagent, respectively. The obtained results revealed that tangerine peel extract showed significant activity against the A549 cell line with IC50 of 97.66 μg/mL. HPLC analysis proved that the highest concentration is naringenin 464.05 mg/g. More studies indicate that naringenin has significant anticancer potential on A549 cancer cells. The results showed that naringenin binds t0 EGFR protein in A549 with high binding affinity and thus may reduce lung cancer cell migration and enhance the apoptosis of cancer cells. From the obtained results it could be concluded that tangerine peel extract is an effective anti-cancer agent that may potentially serve as a natural therapeutic option for lung cancer treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tangerine%20peel" title="tangerine peel">tangerine peel</a>, <a href="https://publications.waset.org/abstracts/search?q=A549%20cell%20line" title=" A549 cell line"> A549 cell line</a>, <a href="https://publications.waset.org/abstracts/search?q=anticancer" title=" anticancer"> anticancer</a>, <a href="https://publications.waset.org/abstracts/search?q=naringenin" title=" naringenin"> naringenin</a>, <a href="https://publications.waset.org/abstracts/search?q=HPLC%20analysis" title=" HPLC analysis"> HPLC analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=naringenin" title=" naringenin"> naringenin</a>, <a href="https://publications.waset.org/abstracts/search?q=TLC%20bioautography" title=" TLC bioautography"> TLC bioautography</a> </p> <a href="https://publications.waset.org/abstracts/182366/antioxidant-and-cytotoxic-effects-of-different-extracts-of-fruit-peels-against-three-cancer-cell-lines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182366.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">62</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">33</span> A Validated UPLC-MS/MS Assay Using Negative Ionization Mode for High-Throughput Determination of Pomalidomide in Rat Plasma </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muzaffar%20Iqbal">Muzaffar Iqbal</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20Ezzeldin"> Essam Ezzeldin</a>, <a href="https://publications.waset.org/abstracts/search?q=Khalid%20A.%20Al-Rashood"> Khalid A. Al-Rashood </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Pomalidomide is a second generation oral immunomodulatory agent, being used for the treatment of multiple myeloma in patients with disease refractory to lenalidomide and bortezomib. In this study, a sensitive UPLC-MS/MS assay was developed and validated for high-throughput determination of pomalidomide in rat plasma using celecoxib as an internal standard (IS). Liquid liquid extraction using dichloromethane as extracting agent was employed to extract pomalidomide and IS from 200 µL of plasma. Chromatographic separation was carried on Acquity BEHTM C18 column (50 × 2.1 mm, 1.7 µm) using an isocratic mobile phase of acetonitrile:10 mM ammonium acetate (80:20, v/v), at a flow rate of 0.250 mL/min. Both pomalidomide and IS were eluted at 0.66 ± 0.03 and 0.80 ± 0.03 min, respectively with a total run time of 1.5 min only. Detection was performed on a triple quadrupole tandem mass spectrometer using electrospray ionization in negative mode. The precursor to product ion transitions of m/z 272.01 → 160.89 for pomalidomide and m/z 380.08 → 316.01 for IS were used to quantify them respectively, using multiple reaction monitoring mode. The developed method was validated according to regulatory guideline for bioanalytical method validation. The linearity in plasma sample was achieved in the concentration range of 0.47–400 ng/mL (r2 ≥ 0.997). The intra and inter-day precision values were ≤ 11.1% (RSD, %) whereas accuracy values ranged from - 6.8 – 8.5% (RE, %). In addition, other validation results were within the acceptance criteria and the method was successfully applied in a pharmacokinetic study of pomalidomide in rats. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pomalidomide" title="pomalidomide">pomalidomide</a>, <a href="https://publications.waset.org/abstracts/search?q=pharmacokinetics" title=" pharmacokinetics"> pharmacokinetics</a>, <a href="https://publications.waset.org/abstracts/search?q=LC-MS%2FMS" title=" LC-MS/MS"> LC-MS/MS</a>, <a href="https://publications.waset.org/abstracts/search?q=celecoxib" title=" celecoxib "> celecoxib </a> </p> <a href="https://publications.waset.org/abstracts/20277/a-validated-uplc-msms-assay-using-negative-ionization-mode-for-high-throughput-determination-of-pomalidomide-in-rat-plasma" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20277.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">32</span> Biosynthesis of Selenium Oxide Nanoparticles by Streptomyces bikiniensis and Its Cytotoxicity as Antitumor Agents against Hepatocellular and Breast Cells Carcinoma </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maged%20Syed%20Ahamd">Maged Syed Ahamd</a>, <a href="https://publications.waset.org/abstracts/search?q=Manal%20Mohamed%20Yasser"> Manal Mohamed Yasser</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20Sholkamy"> Essam Sholkamy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we reported that selenium (Se) nanoparticles were firstly biosynthesized with a simple and eco-friendly biological method. Their shape, size, FTIR (Fourier Transform Infrared spectroscopy), UV–vis spectra, TEM (Transmission Electron Microscopy) images and EDS (Energy Dispersive Spectroscopy) pattern have been analyzed. TEM analyses of the samples obtained at different stages indicated that the formation of these Se nanostructures was governed by an incubation time (12- 24- 48 hours). The Se nanoparticles were initially generated and then would transform into crystal seeds for the subsequent growth of nanowires; however obtaining stable Se nanowire with a diameter of about 15-100 nm. EDS shows that Se nanoparticles are entirely pure. The IR spectra showed the peaks at 550 cm-1, 1635 cm-1, 1994 cm-1 and 3430 cm-1 correspond to the presence of Se-O bending and stretching vibrations. The concentrations of Se-NPs (0, 1, 2, 5 µg/ml) did not give significantly effect on both two cell lines while the highest concentrations (10- 100 µg/ml gave significantly effects on them. The lethal dose (ID50%) of Se-NPs on Hep2 G and MCF-7 cells was obtained at 75.96 and 61.86 µg/ml, respectively. Results showed that Se nanoparticles as anticancer agent against MCF-7 cells were more effective than Hep2 G cells. Our results suggest that Se-NPs may be a candidate for further evaluation as a chemotherapeutic agent for breast and liver cancers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=selenium%20nanoparticle" title="selenium nanoparticle">selenium nanoparticle</a>, <a href="https://publications.waset.org/abstracts/search?q=Streptomyces%20bikiniensis" title=" Streptomyces bikiniensis"> Streptomyces bikiniensis</a>, <a href="https://publications.waset.org/abstracts/search?q=nanowires" title=" nanowires"> nanowires</a>, <a href="https://publications.waset.org/abstracts/search?q=chemotherapeutic%20agent" title=" chemotherapeutic agent"> chemotherapeutic agent</a> </p> <a href="https://publications.waset.org/abstracts/20175/biosynthesis-of-selenium-oxide-nanoparticles-by-streptomyces-bikiniensis-and-its-cytotoxicity-as-antitumor-agents-against-hepatocellular-and-breast-cells-carcinoma" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20175.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">445</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Essam%20Shalaby&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Essam%20Shalaby&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Essam%20Shalaby&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div 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