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valve</title> <meta name="description" content="Search results for: Ahmed valve"> <meta name="keywords" content="Ahmed valve"> <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" 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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="Ahmed valve"> <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> 1809</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Ahmed valve</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1569</span> Hydraulic Performance of Three Types of Imported Drip Emitters Used in Gezira Clay Soils, Sudan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hisham%20Mousa%20Mohammed%20Ahmed">Hisham Mousa Mohammed Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Wali%20Mohamed%20Salad"> Ahmed Wali Mohamed Salad</a>, <a href="https://publications.waset.org/abstracts/search?q=Yousif%20Hamed%20Dldom%20Gomaa"> Yousif Hamed Dldom Gomaa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A drip or Trickle irrigation system is designed to apply a precise amount of water near the plant with a certain degree of uniformity. This study was conducted at the Experimental Farm of the Faculty of Agricultural Sciences, University of Gezira, in March 2018. The study aimed to design and evaluate the hydraulic performance of three drip emitter types using: average discharge (Qavg), discharge variation (Qvar %), coefficient of uniformity (CU %), coefficient of manufacturer variation (CV %), distribution uniformity (DU %), statistical uniformity (Us %), clogging (%) wetted diameter (cm) and wetted depth (cm). The emitter types used are regular gauges (RG), high compensating pressure (HCP) and low compensating pressure (LCP). The treatments were laid out in a randomized complete block design (RCBD) with four replications. Results showed that there were significant differences (P≤0.05) in all tested parameters except clogging, wetted diameter and wetted depth. Discharge variation (Qvar %) values were 12.71, 15.57 and 19.17 for RG, LCP, and HCP, respectively. The variation is quite good and within the acceptable range. Results of coefficient of manufacture variation (CV %) were 10.9, 27.8 and 52.7 for RG, LCP and HCP, respectively. It is considered within the unacceptable range except for RG type, which is excellent. Statistical uniformity (Us %) values were 89.1, 72.2 and 45.7 for RG, LCP and HCP, respectively. It is considered good, acceptable and unacceptable, respectively. Results of the coefficient of uniformity (CU %) were 91.3, 77.7 and 56.7 for RG, LCP and HCP, respectively. It is considered excellent, fair and unacceptable, respectively. Distribution uniformity (DU %) was 90.2, 67.9 and 36.5 for RG, LCP and HCP, respectively. It is considered excellent, poor and poor, respectively. The study recommended regular gauges (RG) type emitters under the heavy clay soil conditions of the Gezira State, Sudan. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=drip%20irrigation" title="drip irrigation">drip irrigation</a>, <a href="https://publications.waset.org/abstracts/search?q=uniformity" title=" uniformity"> uniformity</a>, <a href="https://publications.waset.org/abstracts/search?q=clogging" title=" clogging"> clogging</a>, <a href="https://publications.waset.org/abstracts/search?q=coefficient" title=" coefficient"> coefficient</a>, <a href="https://publications.waset.org/abstracts/search?q=performance" title=" performance"> performance</a> </p> <a href="https://publications.waset.org/abstracts/159799/hydraulic-performance-of-three-types-of-imported-drip-emitters-used-in-gezira-clay-soils-sudan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/159799.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">100</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1568</span> Gas Lift Optimization to Improve Well Performance</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20A.%20G.%20H.%20Abdalsadig">Mohamed A. G. H. Abdalsadig</a>, <a href="https://publications.waset.org/abstracts/search?q=Amir%20Nourian"> Amir Nourian</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20G.%20Nasr"> G. G. Nasr</a>, <a href="https://publications.waset.org/abstracts/search?q=Meisam%20Babaie"> Meisam Babaie</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Gas lift optimization is becoming more important now a day in petroleum industry. A proper lift optimization can reduce the operating cost, increase the net present value (NPV) and maximize the recovery from the asset. A widely accepted definition of gas lift optimization is to obtain the maximum output under specified operating conditions. In addition, gas lift, a costly and indispensable means to recover oil from high depth reservoir entails solving the gas lift optimization problems. Gas lift optimization is a continuous process; there are two levels of production optimization. The total field optimization involves optimizing the surface facilities and the injection rate that can be achieved by standard tools softwares. Well level optimization can be achieved by optimizing the well parameters such as point of injection, injection rate, and injection pressure. All these aspects have been investigated and presented in this study by using experimental data and PROSPER simulation program. The results show that the well head pressure has a large influence on the gas lift performance and also proved that smart gas lift valve can be used to improve gas lift performance by controlling gas injection from down hole. Obtaining the optimum gas injection rate is important because excessive gas injection reduces production rate and consequently increases the operation cost. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=optimization" title="optimization">optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=production%20rate" title=" production rate"> production rate</a>, <a href="https://publications.waset.org/abstracts/search?q=reservoir%20pressure%20effect" title=" reservoir pressure effect"> reservoir pressure effect</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20injection%20rate%20effect" title=" gas injection rate effect"> gas injection rate effect</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20injection%20pressure" title=" gas injection pressure"> gas injection pressure</a> </p> <a href="https://publications.waset.org/abstracts/46454/gas-lift-optimization-to-improve-well-performance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46454.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">413</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">1567</span> Performance Evaluation of GPS/INS Main Integration Approach </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Othman%20Maklouf">Othman Maklouf</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Adwaib"> Ahmed Adwaib </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper introduces a comparative study between the main GPS/INS coupling schemes, this will include the loosely coupled and tightly coupled configurations, several types of situations and operational conditions, in which the data fusion process is done using Kalman filtering. This will include the importance of sensors calibration as well as the alignment of the strap down inertial navigation system. The limitations of the inertial navigation systems are investigated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=GPS" title="GPS">GPS</a>, <a href="https://publications.waset.org/abstracts/search?q=INS" title=" INS"> INS</a>, <a href="https://publications.waset.org/abstracts/search?q=Kalman%20filter" title=" Kalman filter"> Kalman filter</a>, <a href="https://publications.waset.org/abstracts/search?q=sensor%20calibration" title=" sensor calibration"> sensor calibration</a>, <a href="https://publications.waset.org/abstracts/search?q=navigation%20system" title=" navigation system"> navigation system</a> </p> <a href="https://publications.waset.org/abstracts/1700/performance-evaluation-of-gpsins-main-integration-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1700.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">590</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">1566</span> Antimicrobial, Antioxidant Activities and Phytochemical Screening of Five Species from Acacia Used in Sudanese Ethnomedicine</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hajir%20Abdllha">Hajir Abdllha</a>, <a href="https://publications.waset.org/abstracts/search?q=Alaa%20Mohamed"> Alaa Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Khansa%20Almoniem"> Khansa Almoniem</a>, <a href="https://publications.waset.org/abstracts/search?q=Naga%20Adam"> Naga Adam</a>, <a href="https://publications.waset.org/abstracts/search?q=Wdeea%20Alhaadi"> Wdeea Alhaadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Elshikh"> Ahmed Elshikh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Ali"> Ahmed Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Ismail%20Makuar"> Ismail Makuar</a>, <a href="https://publications.waset.org/abstracts/search?q=Anas%20Elnazeer"> Anas Elnazeer</a>, <a href="https://publications.waset.org/abstracts/search?q=Nagat%20Elrofaei"> Nagat Elrofaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Samir%20Abdoelftah"> Samir Abdoelftah</a>, <a href="https://publications.waset.org/abstracts/search?q=Monier%20Hemidan"> Monier Hemidan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study was designed to investigate antimicrobial, and antioxidant activities of five species from Acacia (Acacia albidia, Acacia mellifera, Acacia nubica, Acacia seyal var. seyal and Acacia tortilis). Phytochemical study was piloted to detect the bioactive compounds, which have been responsible from the biological activities. The ethanol, chloroform and acetone plant extracts were seasoned against standard bacteria strains of gram +ve bacteria Staphylococcus aureus (ATCC 25923), Gram -ve bacteria Pseudomonas aeruginosa (ATCC 27853) and standard fungi Candida albicans (ATCC 90028), using cup-plate method. The antioxidant activities were conducted via DPPH radical scavenging and metal chelating assays. Prospective activity against the five species was observed in acetone extract. Ethanol extract showed highest activities against Staphylococcus aureus, and Candida albicans. Potential antioxidant activity was presented by ethanol. Cholorophorm and acetone extracts via DPPH, the radical scavenging activities were found to be 91±0.03, 88±0.01 and 85±0.04 respectively. The results of phytochemical screening showed that all extracts of studied plant contain flavonoids, saponins, terpenoids, steroids, alkaloids, phenols and tannins. This study gives rise to antioxidant, antimicrobial properties of studied plant, and showed interesting correlation with the phytochemical constituents and biological activities. <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=antioxidant" title=" antioxidant"> antioxidant</a>, <a href="https://publications.waset.org/abstracts/search?q=Acacia%20albidia" title=" Acacia albidia"> Acacia albidia</a>, <a href="https://publications.waset.org/abstracts/search?q=Acacia%20mellifera" title=" Acacia mellifera"> Acacia mellifera</a>, <a href="https://publications.waset.org/abstracts/search?q=Acacia%20nubica" title=" Acacia nubica"> Acacia nubica</a>, <a href="https://publications.waset.org/abstracts/search?q=Acacia%20seyal%20var.%20seyal" title=" Acacia seyal var. seyal"> Acacia seyal var. seyal</a>, <a href="https://publications.waset.org/abstracts/search?q=Acacia%20tortilis" title=" Acacia tortilis"> Acacia tortilis</a> </p> <a href="https://publications.waset.org/abstracts/43629/antimicrobial-antioxidant-activities-and-phytochemical-screening-of-five-species-from-acacia-used-in-sudanese-ethnomedicine" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43629.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">1565</span> Antimicrobial, Antioxidant Activities, and Phytochemical Screening of Five Species from Acacia Used in Sudanese Ethnomedicine</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hajir">Hajir</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Abdllha"> B. Abdllha</a>, <a href="https://publications.waset.org/abstracts/search?q="> </a>, <a href="https://publications.waset.org/abstracts/search?q=Alaa"> Alaa</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Mohamed"> I. Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Khansa"> Khansa</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Almoniem"> A. Almoniem</a>, <a href="https://publications.waset.org/abstracts/search?q=Naga"> Naga</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Adam"> I. Adam</a>, <a href="https://publications.waset.org/abstracts/search?q=Wdeea"> Wdeea</a>, <a href="https://publications.waset.org/abstracts/search?q=Alhaadi"> Alhaadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed"> Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Elshikh"> A. Elshikh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed"> Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Ali"> J. Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Ismail"> Ismail</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Makuar"> G. Makuar</a>, <a href="https://publications.waset.org/abstracts/search?q=Anas"> Anas</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Elnazeer"> M. Elnazeer</a>, <a href="https://publications.waset.org/abstracts/search?q=Nagat"> Nagat</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Elrofaei"> A. Elrofaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Samir"> Samir</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Abdoelftah"> F. Abdoelftah</a>, <a href="https://publications.waset.org/abstracts/search?q=Monier"> Monier</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Hemidan"> N. Hemidan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study was designed to investigate antimicrobial, and antioxidant activities of five species from Acacia (Acacia albidia, Acacia mellifera, Acacia nubica, Acacia seyal var.seyal and Acacia tortilis). Phytochemical study was piloted to detect the bioactive compounds, which have been responsible from the biological activities. The ethanol, chloroform and acetone plant extracts were seasoned against standard bacteria strains of gram +ve bacteria Staphylococcus aureus (ATCC 25923) ,Gram -ve bacteria Pseudomonas aeruginosa (ATCC 27853) and standard fungi Candida albicans (ATCC 90028), using cup-plate method. The antioxidant activities were conducted via DPPH radical scavenging and metal chelating assays. Prospective activity against the five species was observed in acetone extract. Ethanol extract showed highest activities against Staphylococcus aureus, and Candida albicans. Potential antioxidant activity was presented by ethanol. Cholorophorm and acetone extracts via DPPH, the radical scavenging activities were found to be 91±0.03, 88±0.01 and 85±0.04 respectively. The results of phytochemical screening showed that all extracts of studied plant contain flavonoids, saponins, terpenoids, steroids, alkaloids, phenols and tannins. This study give rise to antioxidant, antimicrobial properties of studied plant, and showed interesting correlation with the phytochemical constituents and biological activities. <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=Antioxidant" title=" Antioxidant"> Antioxidant</a>, <a href="https://publications.waset.org/abstracts/search?q=Acacia%20albidia" title=" Acacia albidia"> Acacia albidia</a>, <a href="https://publications.waset.org/abstracts/search?q=Acacia%20mellifera" title=" Acacia mellifera"> Acacia mellifera</a>, <a href="https://publications.waset.org/abstracts/search?q=acacia%20nubica" title=" acacia nubica"> acacia nubica</a>, <a href="https://publications.waset.org/abstracts/search?q=acacia%20seyal%20var.seyal" title=" acacia seyal var.seyal"> acacia seyal var.seyal</a>, <a href="https://publications.waset.org/abstracts/search?q=Acacia%20tortilis" title=" Acacia tortilis"> Acacia tortilis</a> </p> <a href="https://publications.waset.org/abstracts/33404/antimicrobial-antioxidant-activities-and-phytochemical-screening-of-five-species-from-acacia-used-in-sudanese-ethnomedicine" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33404.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">1564</span> Enhancing Warehousing Operation In Cold Supply Chain Through The Use Of IOT And Lifi Technologies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarah%20El-Gamal">Sarah El-Gamal</a>, <a href="https://publications.waset.org/abstracts/search?q=Passent%20Hossam"> Passent Hossam</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Abd%20El%20Aziz"> Ahmed Abd El Aziz</a>, <a href="https://publications.waset.org/abstracts/search?q=Rojina%20Mahmoud"> Rojina Mahmoud</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Hassan"> Ahmed Hassan</a>, <a href="https://publications.waset.org/abstracts/search?q=Dalia%20Hilal"> Dalia Hilal</a>, <a href="https://publications.waset.org/abstracts/search?q=Eman%20Ayman"> Eman Ayman</a>, <a href="https://publications.waset.org/abstracts/search?q=Hana%20Haytham"> Hana Haytham</a>, <a href="https://publications.waset.org/abstracts/search?q=Omar%20Khamis"> Omar Khamis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Several concerns fall upon the supply chain, especially the cold supply chain. According to the literature, the main challenges in the cold supply chain are the distribution and storage phases. In this research, researchers focused on the storage area, which contains several activities such as the picking activity that faces a lot of obstacles and challenges The implementation of IoT solutions enables businesses to monitor the temperature of food items, which is perhaps the most critical parameter in cold chains. Therefore, researchers proposed a practical solution that would help in eliminating the problems related to ineffective picking for products, especially fish and seafood products, by using IoT technology, most notably LiFi technology. Thus, guaranteeing sufficient picking, reducing waste, and consequently lowering costs. A prototype was specially designed and examined. This research is a single case study research. Two methods of data collection were used; observation and semi-structured interviews. Semi-structured interviews were conducted with managers and decision maker at Carrefour Alexandria to validate the problem and the proposed practical solution using IoTandLiFi technology. A total of three interviews were conducted. As a result, a SWOT analysis was achieved in order to highlight all the strengths and weaknesses of using the recommended Lifi solution in the picking process. According to the investigations, it was found that the use of IoT and LiFi technology is cost effective, efficient, and reduces human errors, minimize the percentage of product waste and thus save money and cost. Thus, increasing customer satisfaction and profits gained. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cold%20supply%20chain" title="cold supply chain">cold supply chain</a>, <a href="https://publications.waset.org/abstracts/search?q=picking%20process" title=" picking process"> picking process</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature%20control" title=" temperature control"> temperature control</a>, <a href="https://publications.waset.org/abstracts/search?q=IOT" title=" IOT"> IOT</a>, <a href="https://publications.waset.org/abstracts/search?q=warehousing" title=" warehousing"> warehousing</a>, <a href="https://publications.waset.org/abstracts/search?q=LIFI" title=" LIFI"> LIFI</a> </p> <a href="https://publications.waset.org/abstracts/144236/enhancing-warehousing-operation-in-cold-supply-chain-through-the-use-of-iot-and-lifi-technologies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144236.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">191</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">1563</span> The Robotic Factor in Left Atrial Myxoma</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abraham%20J.%20Rizkalla">Abraham J. Rizkalla</a>, <a href="https://publications.waset.org/abstracts/search?q=Tristan%20D.%20Yan"> Tristan D. Yan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Atrial myxoma is the most common primary cardiac tumor, and can result in cardiac failure secondary to obstruction, or systemic embolism due to fragmentation. Traditionally, excision of atrial an myxoma has been performed through median sternotomy, however the robotic approach offers several advantages including less pain, improved cosmesis, and faster recovery. Here, we highlight the less well recognized advantages and technical aspects to robotic myxoma resection. This video-presentation demonstrates the resection of a papillary subtype left atrial myxoma using the DaVinci© Xi surgical robot. The 10x magnification and 3D vision allows for the interface between the tumor and the interatrial septum to be accurately dissected, without the need to patch the interatrial septum. Several techniques to avoid tumor fragmentation and embolization are demonstrated throughout the procedure. The tumor was completely excised with clear margins. There was no atrial septal defect or mitral valve injury on post operative transesophageal echocardiography. The patient was discharged home on the fourth post-operative day. This video-presentation highlights the advantages of the robotic approach in atrial myxoma resection compared with sternotomy, as well as emphasizing several technical considerations to avoid potential complications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cardiac%20surgery" title="cardiac surgery">cardiac surgery</a>, <a href="https://publications.waset.org/abstracts/search?q=left%20atrial%20myxoma" title=" left atrial myxoma"> left atrial myxoma</a>, <a href="https://publications.waset.org/abstracts/search?q=cardiac%20tumour" title=" cardiac tumour"> cardiac tumour</a>, <a href="https://publications.waset.org/abstracts/search?q=robotic%20resection" title=" robotic resection"> robotic resection</a> </p> <a href="https://publications.waset.org/abstracts/161018/the-robotic-factor-in-left-atrial-myxoma" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161018.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">72</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">1562</span> Automatic Integrated Inverter Type Smart Device for Safe Kitchen</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20M.%20Jananni">K. M. Jananni</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Nandini"> R. Nandini</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The proposed wireless, inverter type design of a LPG leakage monitoring system aims to provide a smart and safe kitchen. The system detects the LPG gas leak using Nano-sensors and alerts the concerned individual through GSM system. The system uses two sensors, one attached to the chimney and other to the regulator of the LPG cylinder. Upon a leakage being detected, the sensor at the regulator actuates the system to cut off the gas supply immediately using a solenoid control valve. The sensor at the chimney checks for the permissible level of LPG mix in the air and when the level exceeds the threshold, the system sends an automatic SMS to the numbers saved. Further the sensor actuates the mini suction system fixed at the chimney within 20 seconds of a leakage to suck out the gas until the level falls well below the threshold. As a safety measure, an automatic window opening and alarm feature is also incorporated into the system. The key feature of this design is that the system is provided with a special inverter designed to make the device function effectively even during power failures. In this paper, utilization of sensors in the kitchen area is discussed and this gives the proposed architecture for real time field monitoring with a PIC Micro-controller. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nano%20sensors" title="nano sensors">nano sensors</a>, <a href="https://publications.waset.org/abstracts/search?q=global%20system%20for%20mobile%20communication" title=" global system for mobile communication"> global system for mobile communication</a>, <a href="https://publications.waset.org/abstracts/search?q=GSM" title=" GSM"> GSM</a>, <a href="https://publications.waset.org/abstracts/search?q=micro%20controller" title=" micro controller"> micro controller</a>, <a href="https://publications.waset.org/abstracts/search?q=inverter" title=" inverter"> inverter</a> </p> <a href="https://publications.waset.org/abstracts/33392/automatic-integrated-inverter-type-smart-device-for-safe-kitchen" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33392.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">473</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">1561</span> Optimization of Turbocharged Diesel Engines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ebrahim%20Safarian">Ebrahim Safarian</a>, <a href="https://publications.waset.org/abstracts/search?q=Kadir%20Bilen"> Kadir Bilen</a>, <a href="https://publications.waset.org/abstracts/search?q=Akif%20Ceviz"> Akif Ceviz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The turbocharger and turbocharging have been the inherent component of diesel engines, so that critical parameters of such engines, as BSFC(Brake Specific Fuel Consumption) or thermal efficiency, fuel consumption, BMEP(Brake Mean Effective Pressure), the power density output and emission level have been improved extensively. In general, the turbocharger can be considered as the most complex component of diesel engines, because it has closely interrelated turbomachinery concepts of the turbines and the compressors to thermodynamic fundamentals of internal combustion engines and stress analysis of all components. In this paper, a waste gate for a conventional single stage radial turbine is investigated by consideration of turbochargers operation constrains and engine operation conditions, without any detail designs in the turbine and the compressor. Amount of opening waste gate which extended between the ranges of full opened and closed valve, is demonstrated by limiting compressor boost pressure ratio. Obtaining of an optimum point by regard above mentioned items is surveyed by three linked meanline modeling programs together which consist of Turbomatch®, Compal®, Rital®madules in concepts NREC® respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=turbocharger" title="turbocharger">turbocharger</a>, <a href="https://publications.waset.org/abstracts/search?q=wastegate" title=" wastegate"> wastegate</a>, <a href="https://publications.waset.org/abstracts/search?q=diesel%20engine" title=" diesel engine"> diesel engine</a>, <a href="https://publications.waset.org/abstracts/search?q=concept%20NREC%20programs" title=" concept NREC programs"> concept NREC programs</a> </p> <a href="https://publications.waset.org/abstracts/21267/optimization-of-turbocharged-diesel-engines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21267.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">243</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">1560</span> The Impact of Electronic Marketing on the Quality Banking Services</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Ghalem">Ahmed Ghalem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The research to be explained is a collection of information about several public and private economic institutions. This information is represented in highlighting the large and useful role in adopting the method of electronic marketing. Which is widespread and easy to use among community members at the local and international levels. Which generates large sums of money with little effort and little time, and also satisfies the customers. Do these things, despite what we have said, run the risk of losing large amounts of money in a moment or a short time. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=economic" title="economic">economic</a>, <a href="https://publications.waset.org/abstracts/search?q=finance" title=" finance"> finance</a>, <a href="https://publications.waset.org/abstracts/search?q=bank" title=" bank"> bank</a>, <a href="https://publications.waset.org/abstracts/search?q=development" title=" development"> development</a>, <a href="https://publications.waset.org/abstracts/search?q=marketing" title=" marketing"> marketing</a> </p> <a href="https://publications.waset.org/abstracts/154708/the-impact-of-electronic-marketing-on-the-quality-banking-services" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154708.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">90</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">1559</span> The Issues of Irrigation and Drainage in Kebbi State and Their Effective Solution for a Sustainable Agriculture in Kebbi State, Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mumtaz%20Ahmed%20Sohag">Mumtaz Ahmed Sohag</a>, <a href="https://publications.waset.org/abstracts/search?q=Ishaq%20Ahmed%20Sohag"> Ishaq Ahmed Sohag</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Kebbi State, located in the Nort-West of Nigeria, is rich in water resources as the major rivers viz. Niger and Rima irrigate a vast majority of land. Besides, there is significant amount of groundwater, which farmers use for agriculture purpose. The groundwater is also a major source of agricultural and domestic water as wells are installed in almost all parts of the region. Although Kebbi State is rich in water, however, there are some pertinent issues which are hampering its agricultural productivity. The low lands (locally called Fadama), has spread out to a vast area. It is inundated every year during the rainy season which lasts from June to September every year. The farmers grow rice during the rainy season when water is standing. They cannot do further agricultural activity for almost two months due to high standing water. This has resulted in widespread waterlogging problem. Besides, the impact of climate change is resulting in rapid variation in river/stream flows. The information about water bodies regarding the availability of water for agricultural and other uses and the behavior of rivers at different flows is seldom available. Furthermore, sediment load (suspended and bedload) is not measured due to which land erosion cannot be countered effectively. This study, carried out in seven different irrigation regions of Kebbi state, found that diversion structures need to be constructed at some strategic locations for the supply of surface water to the farmers. The water table needs to be lowered through an effective drainage system. The monitoring of water bodies is crucial for sound data to help efficient regulation and management of water. Construction of embankments is necessary to control frequent floods in the rivers of Niger and Rima. Furthermore, farmers need capacity and awareness for participatory irrigation management. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=water%20bodies" title="water bodies">water bodies</a>, <a href="https://publications.waset.org/abstracts/search?q=floods" title=" floods"> floods</a>, <a href="https://publications.waset.org/abstracts/search?q=agriculture" title=" agriculture"> agriculture</a>, <a href="https://publications.waset.org/abstracts/search?q=waterlogging" title=" waterlogging"> waterlogging</a> </p> <a href="https://publications.waset.org/abstracts/80448/the-issues-of-irrigation-and-drainage-in-kebbi-state-and-their-effective-solution-for-a-sustainable-agriculture-in-kebbi-state-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80448.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">238</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">1558</span> Experimental Investigation on Performance of Beam Column Frames with Column Kickers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Saiada%20Fuadi%20Fancy">Saiada Fuadi Fancy</a>, <a href="https://publications.waset.org/abstracts/search?q=Fahim%20Ahmed"> Fahim Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Shofiq%20Ahmed"> Shofiq Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Raquib%20Ahsan"> Raquib Ahsan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The worldwide use of reinforced concrete construction stems from the wide availability of reinforcing steel as well as concrete ingredients. However, concrete construction requires a certain level of technology, expertise, and workmanship, particularly, in the field during construction. As a supporting technology for a concrete column or wall construction, kicker is cast as part of the slab or foundation to provide a convenient starting point for a wall or column ensuring integrity at this important junction. For that reason, a comprehensive study was carried out here to investigate the behavior of reinforced concrete frame with different kicker parameters. To achieve this objective, six half-scale specimens of portal reinforced concrete frame with kickers and one portal frame without kicker were constructed according to common practice in the industry and subjected to cyclic incremental horizontal loading with sustained gravity load. In this study, the experimental data, obtained in four deflections controlled cycle, were used to evaluate the behavior of kickers. Load-displacement characteristics were obtained; maximum loads and deflections were measured and assessed. Finally, the test results of frames constructed with three different types of kicker thickness were compared with the kickerless frame. Similar crack patterns were observed for all the specimens. From this investigation, specimens with kicker thickness 3″ were shown better results than specimens with kicker thickness 1.5″, which was specified by maximum load, stiffness, initiation of first crack and residual displacement. Despite of better performance, it could not be firmly concluded that 4.5″ kicker thickness is the most appropriate one. Because, during the test of that specimen, separation of dial gauge was needed. Finally, comparing with kickerless specimen, it was observed that performance of kickerless specimen was relatively better than kicker specimens. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=crack" title="crack">crack</a>, <a href="https://publications.waset.org/abstracts/search?q=cyclic" title=" cyclic"> cyclic</a>, <a href="https://publications.waset.org/abstracts/search?q=kicker" title=" kicker"> kicker</a>, <a href="https://publications.waset.org/abstracts/search?q=load-displacement" title=" load-displacement"> load-displacement</a> </p> <a href="https://publications.waset.org/abstracts/66460/experimental-investigation-on-performance-of-beam-column-frames-with-column-kickers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/66460.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">1557</span> Fish Check-List and Their Characteristics in Bayeku Water, Lagos, Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20W.%20Kashimawo">A. W. Kashimawo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fish check list of Bayeku water, Lagos, Nigeria was investigated between February 2012 and January 2013. Fish specimens were caught with gill and cast-nets, and non-return valve basket trap. Services of artisanal fishermen were employed for the setting of gears and collections of fish. Species not captured after sampling were assumed to be absent or so rare as to be of minimal ecological importance. The 632 specimens were preserved in 10 % formaldehyde in the field prior to their identification. Physicochemical parameters such as temperature, salinity, dissolved oxygen and pH were determined from the lagoon water samples following standard methods. A total of 632 fish were encountered, belonging to 23 families, 27 genera and 29 species. The most abundant species were Chrysichthys nigrodigitatus (9.65 %), Macrobrachium vollenhoveni (7.94 %), Ethmalosa fimbriata (7.12 %), Elops lacerta (6.96 %), Cynoglossus browni (6.17 %), Gobioides broussonnetii (5.69 %), Sphyraena piscatorum (5.39 %), Polydactylus quadrifilis (5.06 %), and Mugil cephalus (4.91 %). There were seasonal variations in species occurrence and abundance. Marine fishes were found in dry season.. Freshwater fishes were more during the wet season. There are marine and freshwater fishes that have euryhaline characteristics and have adapted to the lagoon environment such that they were encountered both in dry and wet seasons. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fish%20check%20list" title="fish check list">fish check list</a>, <a href="https://publications.waset.org/abstracts/search?q=species%20occurrence" title=" species occurrence"> species occurrence</a>, <a href="https://publications.waset.org/abstracts/search?q=abundance" title=" abundance"> abundance</a>, <a href="https://publications.waset.org/abstracts/search?q=ecological%20importance" title=" ecological importance"> ecological importance</a> </p> <a href="https://publications.waset.org/abstracts/20131/fish-check-list-and-their-characteristics-in-bayeku-water-lagos-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20131.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">485</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">1556</span> A Compact Standing-Wave Thermoacoustic Refrigerator Driven by a Rotary Drive Mechanism</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kareem%20Abdelwahed">Kareem Abdelwahed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Salama"> Ahmed Salama</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Rabie"> Ahmed Rabie</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Hamdy"> Ahmed Hamdy</a>, <a href="https://publications.waset.org/abstracts/search?q=Waleed%20Abdelfattah"> Waleed Abdelfattah</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Abd%20El-Rahman"> Ahmed Abd El-Rahman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Conventional vapor-compression refrigeration systems rely on typical refrigerants, such as CFC, HCFC and ammonia. Despite of their suitable thermodynamic properties and their stability in the atmosphere, their corresponding global warming potential and ozone depletion potential raise concerns about their usage. Thus, the need for new refrigeration systems, which are environment-friendly, inexpensive and simple in construction, has strongly motivated the development of thermoacoustic energy conversion systems. A thermoacoustic refrigerator (TAR) is a device that is mainly consisting of a resonator, a stack and two heat exchangers. Typically, the resonator is a long circular tube, made of copper or steel and filled with Helium as a the working gas, while the stack has short and relatively low thermal conductivity ceramic parallel plates aligned with the direction of the prevailing resonant wave. Typically, the resonator of a standing-wave refrigerator has one end closed and is bounded by the acoustic driver at the other end enabling the propagation of half-wavelength acoustic excitation. The hot and cold heat exchangers are made of copper to allow for efficient heat transfer between the working gas and the external heat source and sink respectively. TARs are interesting because they have no moving parts, unlike conventional refrigerators, and almost no environmental impact exists as they rely on the conversion of acoustic and heat energies. Their fabrication process is rather simpler and sizes span wide variety of length scales. The viscous and thermal interactions between the stack plates, heat exchangers' plates and the working gas significantly affect the flow field within the plates' channels, and the energy flux density at the plates' surfaces, respectively. Here, the design, the manufacture and the testing of a compact refrigeration system that is based on the thermoacoustic energy-conversion technology is reported. A 1-D linear acoustic model is carefully and specifically developed, which is followed by building the hardware and testing procedures. The system consists of two harmonically-oscillating pistons driven by a simple 1-HP rotary drive mechanism operating at a frequency of 42Hz -hereby, replacing typical expensive linear motors and loudspeakers-, and a thermoacoustic stack within which the energy conversion of sound into heat is taken place. Air at ambient conditions is used as the working gas while the amplitude of the driver's displacement reaches 19 mm. The 30-cm-long stack is a simple porous ceramic material having 100 square channels per square inch. During operation, both oscillating-gas pressure and solid-stack temperature are recorded for further analysis. Measurements show a maximum temperature difference of about 27 degrees between the stack hot and cold ends with a Carnot coefficient of performance of 11 and estimated cooling capacity of five Watts, when operating at ambient conditions. A dynamic pressure of 7-kPa-amplitude is recorded, yielding a drive ratio of 7% approximately, and found in a good agreement with theoretical prediction. The system behavior is clearly non-linear and significant non-linear loss mechanisms are evident. This work helps understanding the operation principles of thermoacoustic refrigerators and presents a keystone towards developing commercial thermoacoustic refrigerator units. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=refrigeration%20system" title="refrigeration system">refrigeration system</a>, <a href="https://publications.waset.org/abstracts/search?q=rotary%20drive%20mechanism" title=" rotary drive mechanism"> rotary drive mechanism</a>, <a href="https://publications.waset.org/abstracts/search?q=standing-wave" title=" standing-wave"> standing-wave</a>, <a href="https://publications.waset.org/abstracts/search?q=thermoacoustic%20refrigerator" title=" thermoacoustic refrigerator"> thermoacoustic refrigerator</a> </p> <a href="https://publications.waset.org/abstracts/60417/a-compact-standing-wave-thermoacoustic-refrigerator-driven-by-a-rotary-drive-mechanism" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60417.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">368</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">1555</span> Experimental Investigation of Compressed Natural Gas Injector for Direct Injection System </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rafal%20Sochaczewski">Rafal Sochaczewski</a>, <a href="https://publications.waset.org/abstracts/search?q=Grzegorz%20Baranski"> Grzegorz Baranski</a>, <a href="https://publications.waset.org/abstracts/search?q=Adam%20Majczak"> Adam Majczak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the bench research results on a CNG injector at steady state. The quantities measured included voltage and current in a solenoid, pressure of gas behind an injector and injector’s flow rate. Accordingly, injector’s operation parameters were determined according to needle’s lift and injection pressure. The discrepancies between the theoretical (electric) and actual time of injection were defined to specify injector’s opening and closing lag times and the uniqueness of these values in successive cycles of gas injection. It has been demonstrated that needle’s lift has got a stronger impact on injector’s operating parameters than injection pressure. With increasing injection pressure, the force increases and closes an injection valve, which adversely affects uniqueness of injector’s operation. The paper also describes the concept of an injector dedicated to direct CNG injection into a combustion chamber in a dual-fuel engine. The injector’s design enables us to replace 80% of diesel fuel in a dual-fuel engine with a maximum power of 85 kW. Minimum injection pressure is 1,4 MPa then. Simultaneously, injector’s characteristics for varied needle’s lifts and injector’s nonlinear operating points were developed. Acknowledgement: This work has been ﬁnanced by the Polish National Centre for Research and Development, under Grant Agreement No. PBS1/A6/4/2012. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CNG%20injector" title="CNG injector">CNG injector</a>, <a href="https://publications.waset.org/abstracts/search?q=diesel%20engine" title=" diesel engine"> diesel engine</a>, <a href="https://publications.waset.org/abstracts/search?q=direct%20injection" title=" direct injection"> direct injection</a>, <a href="https://publications.waset.org/abstracts/search?q=dual%20fuel" title=" dual fuel"> dual fuel</a> </p> <a href="https://publications.waset.org/abstracts/50146/experimental-investigation-of-compressed-natural-gas-injector-for-direct-injection-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50146.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">276</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">1554</span> Aspects Concerning Flame Propagation of Various Fuels in Combustion Chamber of Four Valve Engines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zoran%20Jovanovic">Zoran Jovanovic</a>, <a href="https://publications.waset.org/abstracts/search?q=Zoran%20Masonicic"> Zoran Masonicic</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Dragutinovic"> S. Dragutinovic</a>, <a href="https://publications.waset.org/abstracts/search?q=Z.%20Sakota"> Z. Sakota</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, results concerning flame propagation of various fuels in a particular combustion chamber with four tilted valves were elucidated. Flame propagation was represented by the evolution of spatial distribution of temperature in various cut-planes within combustion chamber while the flame front location was determined by dint of zones with maximum temperature gradient. The results presented are only a small part of broader on-going scrutinizing activity in the field of multidimensional modeling of reactive flows in combustion chambers with complicated geometries encompassing various models of turbulence, different fuels and combustion models. In the case of turbulence two different models were applied i.e. standard k-ε model of turbulence and k-ξ-f model of turbulence. In this paper flame propagation results were analyzed and presented for two different hydrocarbon fuels, such as CH4 and C8H18. In the case of combustion all differences ensuing from different turbulence models, obvious for non-reactive flows are annihilated entirely. Namely the interplay between fluid flow pattern and flame propagation is invariant as regards turbulence models and fuels applied. Namely the interplay between fluid flow pattern and flame propagation is entirely invariant as regards fuel variation indicating that the flame propagation through unburned mixture of CH4 and C8H18 fuels is not chemically controlled. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=automotive%20flows" title="automotive flows">automotive flows</a>, <a href="https://publications.waset.org/abstracts/search?q=flame%20propagation" title=" flame propagation"> flame propagation</a>, <a href="https://publications.waset.org/abstracts/search?q=combustion%20modelling" title=" combustion modelling"> combustion modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=CNG" title=" CNG"> CNG</a> </p> <a href="https://publications.waset.org/abstracts/47372/aspects-concerning-flame-propagation-of-various-fuels-in-combustion-chamber-of-four-valve-engines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47372.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">292</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">1553</span> Design and Experimental Studies of a Centrifugal SWIRL Atomizer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hemabushan%20K.">Hemabushan K.</a>, <a href="https://publications.waset.org/abstracts/search?q=Manikandan"> Manikandan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In a swirl atomizer, fluid undergoes a swirling motion as a result of centrifugal force created by opposed tangential inlets in the swirl chamber. The angular momentum of fluid continually increases as it reaches the exit orifice and forms a hollow sheet. Which disintegrates to form ligaments and droplets respectively as it flows downstream. This type of atomizers used in rocket injectors and oil burner furnaces. In this present investigation a swirl atomizer with two opposed tangential inlets has been designed. Water as working fluid, experiments had been conducted for the fluid injection pressures in regime of 0.033 bar to 0.519 bar. The fluid has been pressured by a 0.5hp pump and regulated by a pressure regulator valve. Injection pressure of fluid has been measured by a U-tube mercury manometer. The spray pattern and the droplets has been captured with a high resolution camera in black background with a high intensity flash highlighting the fluid. The unprocessed images were processed in ImageJ processing software for measuring the droplet diameters and its shape characteristics along the downstream. The parameters such as mean droplet diameter and distribution, wave pattern, rupture distance and spray angle were studied for this atomizer. The above results were compared with theoretical results and also analysed for deviation with design parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=swirl%20atomizer" title="swirl atomizer">swirl atomizer</a>, <a href="https://publications.waset.org/abstracts/search?q=injector" title=" injector"> injector</a>, <a href="https://publications.waset.org/abstracts/search?q=spray" title=" spray"> spray</a>, <a href="https://publications.waset.org/abstracts/search?q=SWIRL" title=" SWIRL"> SWIRL</a> </p> <a href="https://publications.waset.org/abstracts/21828/design-and-experimental-studies-of-a-centrifugal-swirl-atomizer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21828.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">490</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">1552</span> Numerical Investigation of Gas Leakage in RCSW-Soil Combinations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahmoud%20Y.%20M.%20Ahmed">Mahmoud Y. M. Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Konsowa"> Ahmed Konsowa</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostafa%20Sami"> Mostafa Sami</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayman%20Mosallam"> Ayman Mosallam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fukushima nuclear accident (Japan 2011) has drawn attention to the issue of gas leakage from hazardous facilities through building boundaries. The rapidly increasing investments in nuclear stations have made the ability to predict, and prevent, gas leakage a rather crucial issue both environmentally and economically. Leakage monitoring for underground facilities is rather complicated due to the combination of Reinforced Concrete Shear Wall (RCSW) and soil. In the framework of a recent research conducted by the authors, the gas insulation capabilities of RCSW-soil combination have been investigated via a lab-scale experimental work. Despite their accuracy, experimental investigations are expensive, time-consuming, hazardous, and lack for flexibility. Numerically simulating the gas leakage as a fluid flow problem based on Computational Fluid Dynamics (CFD) modeling approach can provide a potential alternative. This novel implementation of CFD approach is the topic of the present paper. The paper discusses the aspects of modeling the gas flow through porous media that resemble the RCSW both isolated and combined with the normal soil. A commercial CFD package is utilized in simulating this fluid flow problem. A fixed RCSW layer thickness is proposed, air is taken as the leaking gas, whereas the soil layer is represented as clean sand with variable properties. The variable sand properties include sand layer thickness, fine fraction ratio, and moisture content. The CFD simulation results almost demonstrate what has been found experimentally. A soil layer attached next to a cracked reinforced concrete section plays a significant role in reducing the gas leakage from that cracked section. This role is found to be strongly dependent on the soil specifications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=RCSW" title="RCSW">RCSW</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20leakage" title=" gas leakage"> gas leakage</a>, <a href="https://publications.waset.org/abstracts/search?q=Pressure%20Decay%20Method" title=" Pressure Decay Method"> Pressure Decay Method</a>, <a href="https://publications.waset.org/abstracts/search?q=hazardous%20underground%20facilities" title=" hazardous underground facilities"> hazardous underground facilities</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD" title=" CFD"> CFD</a> </p> <a href="https://publications.waset.org/abstracts/24793/numerical-investigation-of-gas-leakage-in-rcsw-soil-combinations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24793.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">418</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">1551</span> The Interplay between Autophagy and Macrophages' Polarization in Wound Healing: A Genetic Regulatory Network Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mayada%20Mazher">Mayada Mazher</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Moustafa"> Ahmed Moustafa</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Abdellatif"> Ahmed Abdellatif</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Autophagy is a eukaryotic, highly conserved catabolic process implicated in many pathophysiologies such as wound healing. Autophagy-associated genes serve as a scaffolding platform for signal transduction of macrophage polarization during the inflammatory phase of wound healing and tissue repair process. In the current study, we report a model for the interplay between autophagy-associated genes and macrophages polarization associated genes. Methods: In silico analysis was performed on 249 autophagy-related genes retrieved from the public autophagy database and gene expression data retrieved from Gene Expression Omnibus (GEO); GSE81922 and GSE69607 microarray data macrophages polarization 199 DEGS. An integrated protein-protein interaction network was constructed for autophagy and macrophage gene sets. The gene sets were then used for GO terms pathway enrichment analysis. Common transcription factors for autophagy and macrophages' polarization were identified. Finally, microRNAs enriched in both autophagy and macrophages were predicated. Results: In silico prediction of common transcription factors in DEGs macrophages and autophagy gene sets revealed a new role for the transcription factors, HOMEZ, GABPA, ELK1 and REL, that commonly regulate macrophages associated genes: IL6,IL1M, IL1B, NOS1, SOC3 and autophagy-related genes: Atg12, Rictor, Rb1cc1, Gaparab1, Atg16l1. Conclusions: Autophagy and macrophages' polarization are interdependent cellular processes, and both autophagy-related proteins and macrophages' polarization related proteins coordinate in tissue remodelling via transcription factors and microRNAs regulatory network. The current work highlights a potential new role for transcription factors HOMEZ, GABPA, ELK1 and REL in wound healing. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=autophagy%20related%20proteins" title="autophagy related proteins">autophagy related proteins</a>, <a href="https://publications.waset.org/abstracts/search?q=integrated%20network%20analysis" title=" integrated network analysis"> integrated network analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=macrophages%20polarization%20M1%20and%20M2" title=" macrophages polarization M1 and M2"> macrophages polarization M1 and M2</a>, <a href="https://publications.waset.org/abstracts/search?q=tissue%20remodelling" title=" tissue remodelling"> tissue remodelling</a> </p> <a href="https://publications.waset.org/abstracts/108802/the-interplay-between-autophagy-and-macrophages-polarization-in-wound-healing-a-genetic-regulatory-network-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/108802.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">152</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">1550</span> A Practical Technique of Airless Tyres’ Mold Manufacturing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20E.%20Hodaib">Ahmed E. Hodaib</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20A.%20Hashem"> Mohamed A. Hashem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Dissimilar to pneumatic tyres, airless tyres or flat-proof tyres (also known as tweel) is designed to have poly-composite compound treaded around a hub of flexible spokes. The main advantage of this design is its robustness as airless tyres are impossible to deflate or to blowout at highway speeds like conventional tyres so the driver does not have to be restless about having a spare tire. A summary of the study on manufacturing of airless tyres’ mold is given. Moreover, we have proposed some advantages and disadvantages of using tweel tyres. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=airless%20tyres" title="airless tyres">airless tyres</a>, <a href="https://publications.waset.org/abstracts/search?q=tweel" title=" tweel"> tweel</a>, <a href="https://publications.waset.org/abstracts/search?q=non-pneumatic%20tyres" title=" non-pneumatic tyres"> non-pneumatic tyres</a>, <a href="https://publications.waset.org/abstracts/search?q=manufacturing" title=" manufacturing"> manufacturing</a> </p> <a href="https://publications.waset.org/abstracts/59171/a-practical-technique-of-airless-tyres-mold-manufacturing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59171.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">501</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">1549</span> Evaluation of Two DNA Extraction Methods for Minimal Porcine (Pork) Detection in Halal Food Sample Mixture Using Taqman Real-time PCR Technique</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Duaa%20Mughal">Duaa Mughal</a>, <a href="https://publications.waset.org/abstracts/search?q=Syeda%20Areeba%20Nadeem"> Syeda Areeba Nadeem</a>, <a href="https://publications.waset.org/abstracts/search?q=Shakil%20Ahmed"> Shakil Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ishtiaq%20Ahmed%20Khan"> Ishtiaq Ahmed Khan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The identification of porcine DNA in Halal food items is critical to ensuring compliance with dietary restrictions and religious beliefs. In Islam, Porcine is prohibited as clearly mentioned in Quran (Surah Al-Baqrah, Ayat 173). The purpose of this study was to compare two DNA extraction procedures for detecting 0.001% of porcine DNA in processed Halal food sample mixtures containing chicken, camel, veal, turkey and goat meat using the TaqMan Real-Time PCR technology. In this research, two different commercial kit protocols were compared. The processed sample mixtures were prepared by spiking known concentration of porcine DNA to non-porcine food matrices. Afterwards, TaqMan Real-Time PCR technique was used to target a particular porcine gene from the extracted DNA samples, which was quantified after extraction. The results of the amplification were evaluated for sensitivity, specificity, and reproducibility. The results of the study demonstrated that two DNA extraction techniques can detect 0.01% of porcine DNA in mixture of Halal food samples. However, as compared to the alternative approach, Eurofins| GeneScan GeneSpin DNA Isolation kit showed more effective sensitivity and specificity. Furthermore, the commercial kit-based approach showed great repeatability with minimal variance across repeats. Quantification of DNA was done by using fluorometric assay. In conclusion, the comparison of DNA extraction methods for detecting porcine DNA in Halal food sample mixes using the TaqMan Real-Time PCR technology reveals that the commercial kit-based approach outperforms the other methods in terms of sensitivity, specificity, and repeatability. This research helps to promote the development of reliable and standardized techniques for detecting porcine DNA in Halal food items, religious conformity and assuring nutritional. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=real%20time%20PCR%20%28qPCR%29" title="real time PCR (qPCR)">real time PCR (qPCR)</a>, <a href="https://publications.waset.org/abstracts/search?q=DNA%20extraction" title=" DNA extraction"> DNA extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=porcine%20DNA" title=" porcine DNA"> porcine DNA</a>, <a href="https://publications.waset.org/abstracts/search?q=halal%20food%20authentication" title=" halal food authentication"> halal food authentication</a>, <a href="https://publications.waset.org/abstracts/search?q=religious%20conformity" title=" religious conformity"> religious conformity</a> </p> <a href="https://publications.waset.org/abstracts/178197/evaluation-of-two-dna-extraction-methods-for-minimal-porcine-pork-detection-in-halal-food-sample-mixture-using-taqman-real-time-pcr-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/178197.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">78</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1548</span> Soil Moisture Control System: A Product Development Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Swapneel%20U.%20Naphade">Swapneel U. Naphade</a>, <a href="https://publications.waset.org/abstracts/search?q=Dushyant%20A.%20Patil"> Dushyant A. Patil</a>, <a href="https://publications.waset.org/abstracts/search?q=Satyabodh%20M.%20Kulkarni"> Satyabodh M. Kulkarni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we propose the concept and geometrical design of a soil moisture control system (SMCS) module by following the product development approach to develop an inexpensive, easy to use and quick to install product targeted towards agriculture practitioners. The module delivers water to the agricultural land efficiently by sensing the soil moisture and activating the delivery valve. We start with identifying the general needs of the potential customer. Then, based on customer needs we establish product specifications and identify important measuring quantities to evaluate our product. Keeping in mind the specifications, we develop various conceptual solutions of the product and select the best solution through concept screening and selection matrices. Then, we develop the product architecture by integrating the systems into the final product. In the end, the geometric design is done using human factors engineering concepts like heuristic analysis, task analysis, and human error reduction analysis. The result of human factors analysis reveals the remedies which should be applied while designing the geometry and software components of the product. We find that to design the best grip in terms of comfort and applied force, for a power-type grip, a grip-diameter of 35 mm is the most ideal. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=agriculture" title="agriculture">agriculture</a>, <a href="https://publications.waset.org/abstracts/search?q=human%20factors" title=" human factors"> human factors</a>, <a href="https://publications.waset.org/abstracts/search?q=product%20design" title=" product design"> product design</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20moisture%20control" title=" soil moisture control"> soil moisture control</a> </p> <a href="https://publications.waset.org/abstracts/86316/soil-moisture-control-system-a-product-development-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86316.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">172</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">1547</span> Improve Student Performance Prediction Using Majority Vote Ensemble Model for Higher Education</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wade%20Ghribi">Wade Ghribi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelmoty%20M.%20Ahmed"> Abdelmoty M. Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Said%20Badawy"> Ahmed Said Badawy</a>, <a href="https://publications.waset.org/abstracts/search?q=Belgacem%20Bouallegue"> Belgacem Bouallegue</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In higher education institutions, the most pressing priority is to improve student performance and retention. Large volumes of student data are used in Educational Data Mining techniques to find new hidden information from students' learning behavior, particularly to uncover the early symptom of at-risk pupils. On the other hand, data with noise, outliers, and irrelevant information may provide incorrect conclusions. By identifying features of students' data that have the potential to improve performance prediction results, comparing and identifying the most appropriate ensemble learning technique after preprocessing the data, and optimizing the hyperparameters, this paper aims to develop a reliable students' performance prediction model for Higher Education Institutions. Data was gathered from two different systems: a student information system and an e-learning system for undergraduate students in the College of Computer Science of a Saudi Arabian State University. The cases of 4413 students were used in this article. The process includes data collection, data integration, data preprocessing (such as cleaning, normalization, and transformation), feature selection, pattern extraction, and, finally, model optimization and assessment. Random Forest, Bagging, Stacking, Majority Vote, and two types of Boosting techniques, AdaBoost and XGBoost, are ensemble learning approaches, whereas Decision Tree, Support Vector Machine, and Artificial Neural Network are supervised learning techniques. Hyperparameters for ensemble learning systems will be fine-tuned to provide enhanced performance and optimal output. The findings imply that combining features of students' behavior from e-learning and students' information systems using Majority Vote produced better outcomes than the other ensemble techniques. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=educational%20data%20mining" title="educational data mining">educational data mining</a>, <a href="https://publications.waset.org/abstracts/search?q=student%20performance%20prediction" title=" student performance prediction"> student performance prediction</a>, <a href="https://publications.waset.org/abstracts/search?q=e-learning" title=" e-learning"> e-learning</a>, <a href="https://publications.waset.org/abstracts/search?q=classification" title=" classification"> classification</a>, <a href="https://publications.waset.org/abstracts/search?q=ensemble%20learning" title=" ensemble learning"> ensemble learning</a>, <a href="https://publications.waset.org/abstracts/search?q=higher%20education" title=" higher education"> higher education</a> </p> <a href="https://publications.waset.org/abstracts/149220/improve-student-performance-prediction-using-majority-vote-ensemble-model-for-higher-education" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/149220.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">108</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">1546</span> The Role of Building Services in Energy Conservation into Residential Buildings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Osama%20Ahmed%20Ibrahim%20Masoud">Osama Ahmed Ibrahim Masoud</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Ibrahim%20Mohamed%20Abdelhadi"> Mohamed Ibrahim Mohamed Abdelhadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Mohamed%20Seddik%20Hassan"> Ahmed Mohamed Seddik Hassan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The problem of study focuses on thermal comfort realization in a residential building during hot and dry climate periods consumes a major electrical energy for air conditioning operation. Thermal comfort realization in a residential building during such climate becomes more difficult regarding the phenomena of climate change, and the use of building and construction materials which have the feature of heat conduction as (bricks-reinforced concrete) and the global energy crises. For that, this study aims to how to realize internal thermal comfort through how to make the best use of building services (temporarily used service spaces) for reducing the electrical energy transfer and saving self-shading. In addition, the possibility of reduction traditional energy (fossil fuel) consumed in cooling through the use of building services for reducing the internal thermal comfort and the relationship between them. This study is based on measuring the consumed electrical energy rate in cooling (by using Design-Builder program) for a residential building (the place of study is: Egypt- Suez Canal- Suez City), this design model has lots of alternatives designs for the place of building services (center of building- the eastern front- southeastern front- the southern front- the south-west front, the western front). The building services are placed on the fronts with different rates for determining the best rate on fronts which realizes thermal comfort with the lowest of energy consumption used in cooling. Findings of the study indicate to that the best position for building services is on the west front then the south-west front, and the more the building services increase, the more energy consumption used in cooling of residential building decreases. Recommendations indicate to the need to study the building services positions in the new projects progress to select the best alternatives to realize ‘Energy conservation’ used in cooling or heating into the buildings in general, residential buildings particularly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=residential%20buildings" title="residential buildings">residential buildings</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20conservation" title=" energy conservation"> energy conservation</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20comfort" title=" thermal comfort"> thermal comfort</a>, <a href="https://publications.waset.org/abstracts/search?q=building%20services" title=" building services"> building services</a>, <a href="https://publications.waset.org/abstracts/search?q=temporary%20used%20service%20spaces" title=" temporary used service spaces"> temporary used service spaces</a>, <a href="https://publications.waset.org/abstracts/search?q=DesignBuilder" title=" DesignBuilder"> DesignBuilder</a> </p> <a href="https://publications.waset.org/abstracts/88067/the-role-of-building-services-in-energy-conservation-into-residential-buildings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88067.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">1545</span> An Atlantic Canadian Case of Disseminated Streptococcus equi Subspecies zooepidemicus Infection</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Albert%20Chang">Albert Chang</a>, <a href="https://publications.waset.org/abstracts/search?q=Duncan%20Webster"> Duncan Webster</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Streptococcus equi subspecies zooepidemicus infections in humans can be contracted through contact with domestic animals or unpasteurized dairy products. Although infection in humans is rare, the course can be fulminant. We describe the case of a 75-year-old, immunocompetent male, who developed disseminated disease with bacteremia, native aortic valve endocarditis, suppurative pericarditis with cardiac tamponade, meningitis and bilateral endopthalmitis. Despite treatment with pericardial drain placement, intravenous ceftriaxone and rifampin the patient, unfortunately, did not survive. To date, reported cases of disseminated infection by S. zooepidemicus are few. Furthermore, with the review of the literature, this case demonstrates the broadest organ system involvement reported. Of interest, previous studies have suggested an affinity of this organism for certain organ systems and this case corroborates an emerging association of S. zooepidemicus with endopthalmitis. In addition, this is the second Canadian case of documented human infection with both cases being similar in clinical features, presentation, and geographical location. A discussion regarding previous S. zooepidemicus outbreaks and the potential for zoonotic outbreaks to occur is included. In short, this case report should serve to warn clinicians regarding complications and sites of haematogenous seeding in the setting of disseminated S. zooepidemicus infections. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=endopthalmitis" title="endopthalmitis">endopthalmitis</a>, <a href="https://publications.waset.org/abstracts/search?q=endocarditis" title=" endocarditis"> endocarditis</a>, <a href="https://publications.waset.org/abstracts/search?q=meningitis" title=" meningitis"> meningitis</a>, <a href="https://publications.waset.org/abstracts/search?q=Streptococcus%20equi%20subspecies%20zooepidemicus" title=" Streptococcus equi subspecies zooepidemicus"> Streptococcus equi subspecies zooepidemicus</a> </p> <a href="https://publications.waset.org/abstracts/82114/an-atlantic-canadian-case-of-disseminated-streptococcus-equi-subspecies-zooepidemicus-infection" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/82114.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">195</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1544</span> Parallel Multisplitting Methods for Differential Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Malika%20El%20Kyal">Malika El Kyal</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Machmoum"> Ahmed Machmoum</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We prove the superlinear convergence of asynchronous multi-splitting methods applied to differential equations. This study is based on the technique of nested sets. It permits to specify kind of the convergence in the asynchronous mode.The main characteristic of an asynchronous mode is that the local algorithm not have to wait at predetermined messages to become available. We allow some processors to communicate more frequently than others, and we allow the communication delays to be substantial and unpredictable. Note that synchronous algorithms in the computer science sense are particular cases of our formulation of asynchronous one. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=parallel%20methods" title="parallel methods">parallel methods</a>, <a href="https://publications.waset.org/abstracts/search?q=asynchronous%20mode" title=" asynchronous mode"> asynchronous mode</a>, <a href="https://publications.waset.org/abstracts/search?q=multisplitting" title=" multisplitting"> multisplitting</a>, <a href="https://publications.waset.org/abstracts/search?q=ODE" title=" ODE"> ODE</a> </p> <a href="https://publications.waset.org/abstracts/20675/parallel-multisplitting-methods-for-differential-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20675.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">526</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">1543</span> CFD Study for Normal and Rifled Tube with a Convergence Check</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sharfi%20Dirar">Sharfi Dirar</a>, <a href="https://publications.waset.org/abstracts/search?q=Shihab%20Elhaj"> Shihab Elhaj</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20El%20Fatih"> Ahmed El Fatih</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Computational fluid dynamics were used to simulate and study the heated water boiler tube for both normal and rifled tube with a refinement of the mesh to check the convergence. The operation condition was taken from GARRI power station and used in a boundary condition accordingly. The result indicates the rifled tube has higher heat transfer efficiency than the normal tube. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boiler%20tube" title="boiler tube">boiler tube</a>, <a href="https://publications.waset.org/abstracts/search?q=convergence%20check" title=" convergence check"> convergence check</a>, <a href="https://publications.waset.org/abstracts/search?q=normal%20tube" title=" normal tube"> normal tube</a>, <a href="https://publications.waset.org/abstracts/search?q=rifled%20tube" title=" rifled tube"> rifled tube</a> </p> <a href="https://publications.waset.org/abstracts/37253/cfd-study-for-normal-and-rifled-tube-with-a-convergence-check" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37253.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">334</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">1542</span> Hybrid Genetic Approach for Solving Economic Dispatch Problems with Valve-Point Effect</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20I.%20Mahrous">Mohamed I. Mahrous</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20G.%20Ashmawy"> Mohamed G. Ashmawy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hybrid genetic algorithm (HGA) is proposed in this paper to determine the economic scheduling of electric power generation over a fixed time period under various system and operational constraints. The proposed technique can outperform conventional genetic algorithms (CGAs) in the sense that HGA make it possible to improve both the quality of the solution and reduce the computing expenses. In contrast, any carefully designed GA is only able to balance the exploration and the exploitation of the search effort, which means that an increase in the accuracy of a solution can only occure at the sacrifice of convergent speed, and vice visa. It is unlikely that both of them can be improved simultaneously. The proposed hybrid scheme is developed in such a way that a simple GA is acting as a base level search, which makes a quick decision to direct the search towards the optimal region, and a local search method (pattern search technique) is next employed to do the fine tuning. The aim of the strategy is to achieve the cost reduction within a reasonable computing time. The effectiveness of the proposed hybrid technique is verified on two real public electricity supply systems with 13 and 40 generator units respectively. The simulation results obtained with the HGA for the two real systems are very encouraging with regard to the computational expenses and the cost reduction of power generation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=genetic%20algorithms" title="genetic algorithms">genetic algorithms</a>, <a href="https://publications.waset.org/abstracts/search?q=economic%20dispatch" title=" economic dispatch"> economic dispatch</a>, <a href="https://publications.waset.org/abstracts/search?q=pattern%20search" title=" pattern search"> pattern search</a> </p> <a href="https://publications.waset.org/abstracts/14138/hybrid-genetic-approach-for-solving-economic-dispatch-problems-with-valve-point-effect" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14138.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">1541</span> Off-Line Text-Independent Arabic Writer Identification Using Optimum Codebooks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Abdullah%20Ahmed">Ahmed Abdullah Ahmed </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The task of recognizing the writer of a handwritten text has been an attractive research problem in the document analysis and recognition community with applications in handwriting forensics, paleography, document examination and handwriting recognition. This research presents an automatic method for writer recognition from digitized images of unconstrained writings. Although a great effort has been made by previous studies to come out with various methods, their performances, especially in terms of accuracy, are fallen short, and room for improvements is still wide open. The proposed technique employs optimal codebook based writer characterization where each writing sample is represented by a set of features computed from two codebooks, beginning and ending. Unlike most of the classical codebook based approaches which segment the writing into graphemes, this study is based on fragmenting a particular area of writing which are beginning and ending strokes. The proposed method starting with contour detection to extract significant information from the handwriting and the curve fragmentation is then employed to categorize the handwriting into Beginning and Ending zones into small fragments. The similar fragments of beginning strokes are grouped together to create Beginning cluster, and similarly, the ending strokes are grouped to create the ending cluster. These two clusters lead to the development of two codebooks (beginning and ending) by choosing the center of every similar fragments group. Writings under study are then represented by computing the probability of occurrence of codebook patterns. The probability distribution is used to characterize each writer. Two writings are then compared by computing distances between their respective probability distribution. The evaluations carried out on ICFHR standard dataset of 206 writers using Beginning and Ending codebooks separately. Finally, the Ending codebook achieved the highest identification rate of 98.23%, which is the best result so far on ICFHR dataset. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=off-line%20text-independent%20writer%20identification" title="off-line text-independent writer identification">off-line text-independent writer identification</a>, <a href="https://publications.waset.org/abstracts/search?q=feature%20extraction" title=" feature extraction"> feature extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=codebook" title=" codebook"> codebook</a>, <a href="https://publications.waset.org/abstracts/search?q=fragments" title=" fragments"> fragments</a> </p> <a href="https://publications.waset.org/abstracts/36173/off-line-text-independent-arabic-writer-identification-using-optimum-codebooks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/36173.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">512</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">1540</span> Management of Recurrent Temporomandibular Joint True Bony Ankylosis : A Case Report</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahmoud%20A.%20Amin">Mahmoud A. Amin</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20Taman"> Essam Taman</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Omran"> Ahmed Omran</a>, <a href="https://publications.waset.org/abstracts/search?q=Mahmoud%20Shawky"> Mahmoud Shawky</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Mekawy"> Ahmed Mekawy</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdallah%20M.%20Kotkat"> Abdallah M. Kotkat</a>, <a href="https://publications.waset.org/abstracts/search?q=Saber%20Younes"> Saber Younes</a>, <a href="https://publications.waset.org/abstracts/search?q=Nehad%20N.%20Ghonemy"> Nehad N. Ghonemy</a>, <a href="https://publications.waset.org/abstracts/search?q=Amin%20Saad"> Amin Saad</a>, <a href="https://publications.waset.org/abstracts/search?q=Ezz-Aleslam"> Ezz-Aleslam</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdullah%20M.%20Elosh"> Abdullah M. Elosh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: TMJ is a one-of-a-kind, complicated synovial joint that helps with masticatory function by allowing the mandible to open and close the mouth. True ankylosis is a situation in which condylar movement is limited by a mechanical defect in the joint, whereas false ankylosis is a condition in which there is a restriction in mandibular movement due to muscular spasm myositis ossificans, and coronoid process hyperplasia. Ankylosis is characterized by the inability to open the mouth due to fusion of the TMJ condyle to the base of the skull as a result of trauma, infection, or systemic diseases such as rheumatoid arthritis (the most common) and psoraisis. Ankylosis causes facial asymmetry and affects the patient psychologically as well as speech, difficult mastication, poor oral hygiene, malocclusion, and other factors. TMJ is a technically challenging joint; hence TMJ ankylosis management is complicated. Case presentation: this case is a male patient 25 years old reported to our maxillofacial clinic in Damietta faculty of medicine, Al-Azhar University with the inability to open the mouth at all, with a history of difficulty of mouth breathing and eating foods, there was a history of falling from height at 2006, and the patient underwent corrective surgery before with no improvement because the ankylosis was relapsed short period after the previous operations with that done out of our hospital inter-incisor distant ZERO so, this condition need mandatory management. Clinical examination and radiological investigations were done after complete approval from the patient and his brother; tracheostomy was done for our patient before the operation. The patient entered the operation in our hospital and drastic improvement in mouth opening was noticed, helping to restore the physical psychological health of the patient. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=temporomandibular%20joint" title="temporomandibular joint">temporomandibular joint</a>, <a href="https://publications.waset.org/abstracts/search?q=TMJ" title=" TMJ"> TMJ</a>, <a href="https://publications.waset.org/abstracts/search?q=Ankylosis" title=" Ankylosis"> Ankylosis</a>, <a href="https://publications.waset.org/abstracts/search?q=mouth%20opening" title=" mouth opening"> mouth opening</a>, <a href="https://publications.waset.org/abstracts/search?q=physiotherapy" title=" physiotherapy"> physiotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=condylar%20plate" title=" condylar plate"> condylar plate</a> </p> <a href="https://publications.waset.org/abstracts/146929/management-of-recurrent-temporomandibular-joint-true-bony-ankylosis-a-case-report" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146929.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">153</span> </span> </div> </div> <ul class="pagination"> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Ahmed%20valve&page=8" rel="prev">&lsaquo;</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Ahmed%20valve&page=1">1</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Ahmed%20valve&page=2">2</a></li> <li class="page-item disabled"><span class="page-link">...</span></li> <li class="page-item"><a class="page-link" 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