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AbdelGhani</title> <meta name="description" content="Search results for: Sameh AbdelGhani"> <meta name="keywords" content="Sameh AbdelGhani"> <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 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action="https://publications.waset.org/abstracts/search"> <div 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="Sameh AbdelGhani"> <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> 53</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Sameh AbdelGhani</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">53</span> Characterization of 尾-Lactamases Resistance amongst Acinetobacter Baumannii Isolated from Clinical Samples, Egypt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amal%20Saafan">Amal Saafan</a>, <a href="https://publications.waset.org/abstracts/search?q=Kareem%20Al%20Sofy"> Kareem Al Sofy</a>, <a href="https://publications.waset.org/abstracts/search?q=Sameh%20AbdelGhani"> Sameh AbdelGhani</a>, <a href="https://publications.waset.org/abstracts/search?q=Magdy%20Amin"> Magdy Amin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Acinetobacter spp. resistance towards 尾-lactam antibiotics is mediated mainly by different classes of 尾-lactamases production; detection of some genes responsible for production of 尾-lactamases is the objective of the study. Methods: One hundred fifty bacterial isolates were recovered from blood, sputum, and urine specimens from different hospitals in Egypt. Sixty-nine isolate were identified as Acinetobacter baumannii using traditional biochemical tests, CHROM agar, MicroScan and PCR amplification of blaoxa-51like gene. Acinetobacterbaumannii isolates were grouped into carbapenem resistant group (GP1), cefotaxime, ceftazidime and cefoxitin resistant group (GP2) and carbapenem and cephalosporin non-resistant group (GP3). Carbapenemase activity was screened using modified Hodge test (MHT) for GP1.Metallo-尾-lactamases screening was performed for MHT positive isolates using double disk synergy test (DDST) and combined disk test (CDT). Amp C activity was screened using Amp C disk test with Tris-EDTA, DDST, and CDT for GP2. Finally, PCR amplification of blaoxa-51like, blaoxa-23like, blaIMP-like, blaVIM-like, and blaADC-like genes was performed for isolates that showed, at least, two positive results of three for both AmpC and carbapenemases phenotypic screening tests (obvious activity), in addition to GP3 (for comparison). Detection of blaoxa-51like and blaADC-like genes preceded by ISAba1 was also performed. Results: Antibiogram of 69 pure Acinetobacter baumannii isolates resulted in 57, 64, and 2 isolates enrolled into GP1, GP2, and GP3, respectively. Carbapenemase activity was shown by 49(85.9%) isolate using MHT. Metallo-尾-lactamases screening revealed 32(65.3%) and 35(71.4%) using DDST and CDT, respectively.AmpC activity was shown by 43(67.2%) and 50 (78.1%) isolates using AmpC disk test with Tris-EDTA, and both DDST and CDT, respectively. Twenty-seven isolates showed obvious activity, all of them (100%) were harboring blaoxa-51like and blaADC-like genes, while blaoxa-23like, blaIMP-like andblaVIM-like genes were harbored by 23(85.2%), 9 (33.%) and no isolate respectively. Only 12 (44.4%) isolates harbored blaoxa-51like and blaADC-like genes preceded by ISAba1. GP3 isolates showed only positive blaoxa-51like and blaADC-like genes. Conclusion: It is not possible to correlate resistance with presence of blaoxa-51like and blaADC-like genes and presence of ISAba1 was immediate as transcriptional promoter. A blaoxa-23like gene played an important role in carbapenem resistance when compared with blaIMP-like and blaVIM-like gene. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acinetobacter" title="acinetobacter">acinetobacter</a>, <a href="https://publications.waset.org/abstracts/search?q=beta-lactams" title=" beta-lactams"> beta-lactams</a>, <a href="https://publications.waset.org/abstracts/search?q=resistance" title=" resistance"> resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=antimicrobial%20agents" title=" antimicrobial agents"> antimicrobial agents</a> </p> <a href="https://publications.waset.org/abstracts/48958/characterization-of-v-lactamases-resistance-amongst-acinetobacter-baumannii-isolated-from-clinical-samples-egypt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48958.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">345</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">52</span> Different Views and Evaluations of IT Artifacts</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sameh%20Al-Natour">Sameh Al-Natour</a>, <a href="https://publications.waset.org/abstracts/search?q=Izak%20Benbasat"> Izak Benbasat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The introduction of a multitude of new and interactive e-commerce information technology (IT) artifacts has impacted adoption research. Rather than solely functioning as productivity tools, new IT artifacts assume the roles of interaction mediators and social actors. This paper describes the varying roles assumed by IT artifacts, and proposes and distinguishes between four distinct foci of how the artifacts are evaluated. It further proposes a theoretical model that maps the different views of IT artifacts to four distinct types of evaluations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=IT%20adoption" title="IT adoption">IT adoption</a>, <a href="https://publications.waset.org/abstracts/search?q=IT%20artifacts" title=" IT artifacts"> IT artifacts</a>, <a href="https://publications.waset.org/abstracts/search?q=similarity" title=" similarity"> similarity</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20actor" title=" social actor"> social actor</a> </p> <a href="https://publications.waset.org/abstracts/9516/different-views-and-evaluations-of-it-artifacts" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9516.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">391</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">51</span> Elaboration of Titania Nanotubes on Ti鈧咥l鈧刅 Substrate by Electrochemical Anodization for Dental Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Boucheham">Abdelghani Boucheham</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahcene%20Karaali"> Ahcene Karaali</a>, <a href="https://publications.waset.org/abstracts/search?q=Amar%20Manseri"> Amar Manseri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nanostructured Titania layers formed on the surface of titanium and titanium alloys by anodic oxidation play an important role in the enhancement of their biocompatibility and osseointegration in the human body. In the current work, highly ordered titania nanotube array films were elaborated on Ti鈧咥l鈧刅 medical grade alloys in organic electrolyte containing ethylene glycol, 0.2 wt. % NH鈧凢 and 4 vol. % H鈧侽 at an applied potential of 60 V for different durations. The diameters, lengths and wall thicknesses of the obtained nanotubes were characterized by scanning electronic microscopy (SEM). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anodization" title="anodization">anodization</a>, <a href="https://publications.waset.org/abstracts/search?q=dental%20implants" title=" dental implants"> dental implants</a>, <a href="https://publications.waset.org/abstracts/search?q=titania%20nanotubes" title=" titania nanotubes"> titania nanotubes</a>, <a href="https://publications.waset.org/abstracts/search?q=titanium%20alloys" title=" titanium alloys"> titanium alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=SEM" title=" SEM"> SEM</a> </p> <a href="https://publications.waset.org/abstracts/53217/elaboration-of-titania-nanotubes-on-ti6al4v-substrate-by-electrochemical-anodization-for-dental-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/53217.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">249</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">50</span> Induction Machine Bearing Failure Detection Using Advanced Signal Processing Methods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Chahmi">Abdelghani Chahmi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This article examines the detection and localization of faults in electrical systems, particularly those using asynchronous machines. First, the process of failure will be characterized, relevant symptoms will be defined and based on those processes and symptoms, a model of those malfunctions will be obtained. Second, the development of the diagnosis of the machine will be shown. As studies of malfunctions in electrical systems could only rely on a small amount of experimental data, it has been essential to provide ourselves with simulation tools which allowed us to characterize the faulty behavior. Fault detection uses signal processing techniques in known operating phases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=induction%20motor" title="induction motor">induction motor</a>, <a href="https://publications.waset.org/abstracts/search?q=modeling" title=" modeling"> modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=bearing%20damage" title=" bearing damage"> bearing damage</a>, <a href="https://publications.waset.org/abstracts/search?q=airgap%20eccentricity" title=" airgap eccentricity"> airgap eccentricity</a>, <a href="https://publications.waset.org/abstracts/search?q=torque%20variation" title=" torque variation"> torque variation</a> </p> <a href="https://publications.waset.org/abstracts/91336/induction-machine-bearing-failure-detection-using-advanced-signal-processing-methods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/91336.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">139</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">49</span> Experimental Analysis of the Origins of the Anisotropy Behavior in the 2017 AA Aluminum Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=May%20Abdelghani">May Abdelghani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present work is devoted to the study of the microstructural anisotropy in mechanical cyclic behavior of the 2017AA aluminum alloy which is widely used in the aerospace industry. The main purpose of the study is to investigate the microstructural origins of this anisotropy already confirmed in our previous work in 2017AA aluminum alloy. To do this, we have used the microstructural analysis resources such as Scanning Electron Microscope (SEM) to see the differences between breaks from different directions of cyclic loading. Another resource of investigation was used in this study is that the EBSD method, which allows us to obtain a mapping of the crystallographic texture of our material. According to the obtained results in the microscopic analysis, we are able to identify the origins of the anisotropic behavior at the macroscopic scale. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fatigue%20damage" title="fatigue damage">fatigue damage</a>, <a href="https://publications.waset.org/abstracts/search?q=cyclic%20behavior" title=" cyclic behavior"> cyclic behavior</a>, <a href="https://publications.waset.org/abstracts/search?q=anisotropy" title=" anisotropy"> anisotropy</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructural%20analysis" title=" microstructural analysis"> microstructural analysis</a> </p> <a href="https://publications.waset.org/abstracts/20127/experimental-analysis-of-the-origins-of-the-anisotropy-behavior-in-the-2017-aa-aluminum-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20127.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">411</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">48</span> A Fast, Reliable Technique for Face Recognition Based on Hidden Markov Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sameh%20Abaza">Sameh Abaza</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Ibrahim"> Mohamed Ibrahim</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Mahmoud"> Tarek Mahmoud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Due to the development in the digital image processing, its wide use in many applications such as medical, security, and others, the need for more accurate techniques that are reliable, fast and robust is vehemently demanded. In the field of security, in particular, speed is of the essence. In this paper, a pattern recognition technique that is based on the use of Hidden Markov Model (HMM), K-means and the Sobel operator method is developed. The proposed technique is proved to be fast with respect to some other techniques that are investigated for comparison. Moreover, it shows its capability of recognizing the normal face (center part) as well as face boundary. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=HMM" title="HMM">HMM</a>, <a href="https://publications.waset.org/abstracts/search?q=K-Means" title=" K-Means"> K-Means</a>, <a href="https://publications.waset.org/abstracts/search?q=Sobel" title=" Sobel"> Sobel</a>, <a href="https://publications.waset.org/abstracts/search?q=accuracy" title=" accuracy"> accuracy</a>, <a href="https://publications.waset.org/abstracts/search?q=face%20recognition" title=" face recognition"> face recognition</a> </p> <a href="https://publications.waset.org/abstracts/60973/a-fast-reliable-technique-for-face-recognition-based-on-hidden-markov-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60973.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">331</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">47</span> Effect of Low Level Laser for Athletic Achilles Tendinopathy: A Systematic Review</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sameh%20Eldaly">Sameh Eldaly</a>, <a href="https://publications.waset.org/abstracts/search?q=Rola%20Essam"> Rola Essam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objective: The purpose of this study was to determine the benefits of low-level laser therapy for Athletic Achilles Tendinopathy. Data sources: Search strategies were conducted on 2 Randomized control trial and one pilot study. Results: three trials (103 participants) were analyzed. Laser therapy associated to eccentric exercises, when compared to eccentric exercises and placebo, had low to very low certainty of evidence in pain and function assessment. Conclusion: those three trials evidenced low to very low effect of LLLT, and the results are insufficient to support the routine use LLLT for Achilles tendinopathy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=achilles%20tendinopathy" title="achilles tendinopathy">achilles tendinopathy</a>, <a href="https://publications.waset.org/abstracts/search?q=evidence-based" title=" evidence-based"> evidence-based</a>, <a href="https://publications.waset.org/abstracts/search?q=low-level%20laser%20therapy" title=" low-level laser therapy"> low-level laser therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=review" title=" review"> review</a> </p> <a href="https://publications.waset.org/abstracts/165512/effect-of-low-level-laser-for-athletic-achilles-tendinopathy-a-systematic-review" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165512.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">81</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">46</span> The Fluid Limit of the Critical Processor Sharing Tandem Queue</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amal%20Ezzidani">Amal Ezzidani</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Ben%20Tahar"> Abdelghani Ben Tahar</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Hanini"> Mohamed Hanini</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A sequence of finite tandem queue is considered for this study. Each one has a single server, which operates under the egalitarian processor sharing discipline. External customers arrive at each queue according to a renewal input process and having a general service times distribution. Upon completing service, customers leave the current queue and enter to the next. Under mild assumptions, including critical data, we prove the existence and the uniqueness of the fluid solution. For asymptotic behavior, we provide necessary and sufficient conditions for the invariant state and the convergence to this invariant state. In the end, we establish the convergence of a correctly normalized state process to a fluid limit characterized by a system of algebraic and integral equations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fluid%20limit" title="fluid limit">fluid limit</a>, <a href="https://publications.waset.org/abstracts/search?q=fluid%20model" title=" fluid model"> fluid model</a>, <a href="https://publications.waset.org/abstracts/search?q=measure%20valued%20process" title=" measure valued process"> measure valued process</a>, <a href="https://publications.waset.org/abstracts/search?q=processor%20sharing" title=" processor sharing"> processor sharing</a>, <a href="https://publications.waset.org/abstracts/search?q=tandem%20queue" title=" tandem queue"> tandem queue</a> </p> <a href="https://publications.waset.org/abstracts/130452/the-fluid-limit-of-the-critical-processor-sharing-tandem-queue" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130452.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">323</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">45</span> Treatment of Dredged Marine Sediments for Their Reuse in Road Construction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Ben%20Abdelghani">F. Ben Abdelghani</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Maherezi"> W. Maherezi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Dredging operations generate, each year, a great quantity of marine sediments. These raw materials can not be used in road construction without a specific treatment process. Sediments suitability tests has shown that most of studied sediments are not suitable to be used in road construction. In order to improve their compacity and their mechanical performance, addition of a granular material is recommended. The use of a dredged sand, to improve the granular mixture containing sediments, allows a better management of the two types of dredge materials (sand and sediment). In this study, a new road material containing dredged marine sediments and dredged sand is formulated and treated by adding various binders. Mechanical performance investigation of different mixtures by measuring Proctor-IPI values and simple compressive strengths is realized. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dredged%20sediments" title="dredged sediments">dredged sediments</a>, <a href="https://publications.waset.org/abstracts/search?q=suitability%20tests" title=" suitability tests"> suitability tests</a>, <a href="https://publications.waset.org/abstracts/search?q=road%20construction" title=" road construction"> road construction</a>, <a href="https://publications.waset.org/abstracts/search?q=hydraulic%20binder" title=" hydraulic binder"> hydraulic binder</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20performance" title=" mechanical performance"> mechanical performance</a> </p> <a href="https://publications.waset.org/abstracts/41254/treatment-of-dredged-marine-sediments-for-their-reuse-in-road-construction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41254.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">362</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">44</span> Production of Ultra-Low Temperature by the Vapor Compression Refrigeration Cycles with Environment Friendly Working Fluids</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sameh%20Frikha">Sameh Frikha</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Salah%20Abid"> Mohamed Salah Abid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We investigate the performance of an integrated cascade (IC) refrigeration system which uses environment friendly zeotropic mixtures. Computational calculation has been carried out by varying pressure level at the evaporator and the condenser of the system. Effects of mass flow rate of the refrigerant on the coefficient of performance (COP) are presented. We show that the integrated cascade system produces ultra-low temperatures in the evaporator by using environment friendly zeotropic mixture. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coefficient%20of%20performance" title="coefficient of performance">coefficient of performance</a>, <a href="https://publications.waset.org/abstracts/search?q=environment%20friendly%20zeotropic%20mixture" title=" environment friendly zeotropic mixture"> environment friendly zeotropic mixture</a>, <a href="https://publications.waset.org/abstracts/search?q=integrated%20cascade" title=" integrated cascade"> integrated cascade</a>, <a href="https://publications.waset.org/abstracts/search?q=ultra%20low%20temperature" title=" ultra low temperature"> ultra low temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=vapor%20compression%20refrigeration%20cycles" title=" vapor compression refrigeration cycles"> vapor compression refrigeration cycles</a> </p> <a href="https://publications.waset.org/abstracts/40244/production-of-ultra-low-temperature-by-the-vapor-compression-refrigeration-cycles-with-environment-friendly-working-fluids" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40244.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">261</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">43</span> Mapping of Potential Areas for Groundwater Storage in the Sais Plateau and Its Middle Atlas Borders, Morocco</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Qadem">Abdelghani Qadem</a>, <a href="https://publications.waset.org/abstracts/search?q=Zohair%20Qadem"> Zohair Qadem</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Lasri"> Mohamed Lasri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> At the level of the Moroccan Sais Plateau, groundwater constitutes strategic natural resources for agricultural, industrial, and domestic use. Today, due to climate change and population growth, the pressure on groundwater has increased considerably. This contribution aims to delineate and map potential areas for groundwater storage in the area in question using GIS and remote sensing. The methodology adopted is based on the identification of the thematic layers used to assess the potential recharge of the aquifer. The mapping of potential areas for groundwater storage is developed through the method of modeling and weighted overlay using the spatial analysis tool on the Geographic Information System. The results obtained can be used for the planning of future artificial recharge projects in the study area in order to ensure the good sustainable use of this underground gift. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Morocco" title="Morocco">Morocco</a>, <a href="https://publications.waset.org/abstracts/search?q=climate%20change" title=" climate change"> climate change</a>, <a href="https://publications.waset.org/abstracts/search?q=groundwater" title=" groundwater"> groundwater</a>, <a href="https://publications.waset.org/abstracts/search?q=mapping" title=" mapping"> mapping</a>, <a href="https://publications.waset.org/abstracts/search?q=recharge" title=" recharge"> recharge</a> </p> <a href="https://publications.waset.org/abstracts/165794/mapping-of-potential-areas-for-groundwater-storage-in-the-sais-plateau-and-its-middle-atlas-borders-morocco" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165794.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">83</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">42</span> Modeling of Dam Break Flood Wave Propagation Using HEC-RAS 2D and GIS: A Case Study of Taksebt Dam in Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Leghouchi">Abdelghani Leghouchi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study aims to predict the consequences associated with the propagation of the flood wave that may occur after the failure of the Taksebt dam and suggest an efficient emergency action plan (EAP) for mitigation purposes. To achieve the objectives of this study, the hydrodynamic model HEC-RAS 2D was used for the flood routing of the dam break wave, which gave an estimate of the hydraulic characteristics downstream the Taksebt dam. Geospatial analysis of the simulation results conducted in a Geographic information system (GIS) environment showed that many residential areas are considered to be in danger in case of the Taksebt dam break event. Based on the obtained results, an emergency actions plan was suggested to moderate the causalities in the downstream area at risk. Overall, the present study showed that the integration of 2D hydraulic modeling and GIS provides great capabilities in providing realistic view of the dam break wave propagation that enhances assessing the associated risks and proposing appropriate mitigation measures. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=taksebt%20dam" title="taksebt dam">taksebt dam</a>, <a href="https://publications.waset.org/abstracts/search?q=dam%20break" title=" dam break"> dam break</a>, <a href="https://publications.waset.org/abstracts/search?q=wave%20propagation%20time" title=" wave propagation time"> wave propagation time</a>, <a href="https://publications.waset.org/abstracts/search?q=HEC-RAS%202D" title=" HEC-RAS 2D"> HEC-RAS 2D</a> </p> <a href="https://publications.waset.org/abstracts/157966/modeling-of-dam-break-flood-wave-propagation-using-hec-ras-2d-and-gis-a-case-study-of-taksebt-dam-in-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157966.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">110</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">41</span> Magnetic Simulation of the Underground Electric Cable in the Presence of a Short Circuit and Harmonics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Nour%20El%20Islam%20Ayad">Ahmed Nour El Islam Ayad</a>, <a href="https://publications.waset.org/abstracts/search?q=Wafa%20Krika"> Wafa Krika</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Ayad"> Abdelghani Ayad</a>, <a href="https://publications.waset.org/abstracts/search?q=Moulay%20Larab"> Moulay Larab</a>, <a href="https://publications.waset.org/abstracts/search?q=Houari%20Boudjella"> Houari Boudjella</a>, <a href="https://publications.waset.org/abstracts/search?q=Farid%20Benhamida"> Farid Benhamida</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this study is to evaluate the magnetic emission of underground electric cable of high voltage, because these power lines generate electromagnetic interaction with other objects near to it. The aim of this work shows a numerical simulation of the magnetic field of buried 400 kV line in three cases: permanent and transient states of short circuit and the last case with the presence of the harmonics at different positions as a function of time variation, with finite element resolution using Comsol Multiphysics software. The results obtained showed that the amplitude and distribution of the magnetic flux density change in the transient state and the presence of harmonics. The results of this work calculate the magnetic field generated by the underground lines in order to evaluate and know their impact on ecology and health. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=underground" title="underground">underground</a>, <a href="https://publications.waset.org/abstracts/search?q=electric%20power%20cables" title=" electric power cables"> electric power cables</a>, <a href="https://publications.waset.org/abstracts/search?q=cables%20crossing" title=" cables crossing"> cables crossing</a>, <a href="https://publications.waset.org/abstracts/search?q=harmonic" title=" harmonic"> harmonic</a>, <a href="https://publications.waset.org/abstracts/search?q=emission" title=" emission"> emission</a> </p> <a href="https://publications.waset.org/abstracts/112134/magnetic-simulation-of-the-underground-electric-cable-in-the-presence-of-a-short-circuit-and-harmonics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/112134.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">229</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">40</span> A Dynamic Software Product Line Approach to Self-Adaptive Genetic Algorithms</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Alidra">Abdelghani Alidra</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Tahar%20Kimour"> Mohamed Tahar Kimour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Genetic algorithm must adapt themselves at design time to cope with the search problem specific requirements and at runtime to balance exploration and convergence objectives. In a previous article, we have shown that modeling and implementing Genetic Algorithms (GA) using the software product line (SPL) paradigm is very appreciable because they constitute a product family sharing a common base of code. In the present article we propose to extend the use of the feature model of the genetic algorithms family to model the potential states of the GA in what is called a Dynamic Software Product Line. The objective of this paper is the systematic generation of a reconfigurable architecture that supports the dynamic of the GA and which is easily deduced from the feature model. The resultant GA is able to perform dynamic reconfiguration autonomously to fasten the convergence process while producing better solutions. Another important advantage of our approach is the exploitation of recent advances in the domain of dynamic SPLs to enhance the performance of the GAs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=self-adaptive%20genetic%20algorithms" title="self-adaptive genetic algorithms">self-adaptive genetic algorithms</a>, <a href="https://publications.waset.org/abstracts/search?q=software%20engineering" title=" software engineering"> software engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20software%20product%20lines" title=" dynamic software product lines"> dynamic software product lines</a>, <a href="https://publications.waset.org/abstracts/search?q=reconfigurable%20architecture" title=" reconfigurable architecture"> reconfigurable architecture</a> </p> <a href="https://publications.waset.org/abstracts/37396/a-dynamic-software-product-line-approach-to-self-adaptive-genetic-algorithms" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37396.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">285</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">39</span> Characterization and Properties of Novel Flame Retardants Based on s-Triazine</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sameh%20M.%20Osman">Sameh M. Osman</a>, <a href="https://publications.waset.org/abstracts/search?q=El-Refaie%20Kenawy"> El-Refaie Kenawy</a>, <a href="https://publications.waset.org/abstracts/search?q=Zeid%20A.%20Al-Othman"> Zeid A. Al-Othman</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20H.%20El-Newehy"> Mohamed H. El-Newehy</a>, <a href="https://publications.waset.org/abstracts/search?q=El-Saied%20A.%20Aly"> El-Saied A. Aly</a>, <a href="https://publications.waset.org/abstracts/search?q=Sherine%20N.%20Khattab"> Sherine N. Khattab</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayman%20El-Faham"> Ayman El-Faham</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Recently, there has been a huge interest in using cyanuric chloride in a wide range of functional group transformations, as Cyanuric chloride has temperature-dependent differential reactivity for displacement of chlorides with various nucleophiles In the present work, some copolymers based on s-triazine Unit were prepared by microwave-assisted synthesis. For comparison study, the copolymers were synthesized by the conventional method. Synthesized Copolymers were characterized by MP, IR, TGA, DSC and GPC. The result indicated that copolymers are thermally stable and in good in composition and yield. Further studies that involve the test for selected removal of transition elements such as Cu (II), Zn (II) and Mn (II). Moreover, the effects of the polymeric triazine derivatives containing different functional groups which expected to have a good thermal stability and char formation ability on thermal degradation and flame retardancy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=flame%20retardants" title="flame retardants">flame retardants</a>, <a href="https://publications.waset.org/abstracts/search?q=heavy%20metals" title=" heavy metals"> heavy metals</a>, <a href="https://publications.waset.org/abstracts/search?q=microwave-assisted%20synthesis" title=" microwave-assisted synthesis"> microwave-assisted synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=s-triazine" title=" s-triazine"> s-triazine</a> </p> <a href="https://publications.waset.org/abstracts/38293/characterization-and-properties-of-novel-flame-retardants-based-on-s-triazine" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38293.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">362</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">38</span> Impact of Climate Change on Water Resources in Morocco</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Qadem">Abdelghani Qadem</a>, <a href="https://publications.waset.org/abstracts/search?q=Zouhair%20Qadem"> Zouhair Qadem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Like the countries of the Mediterranean region, Morocco is likely to be at high risk of water scarcity due to climate change. Morocco, which is the subject of this study, is located between two climatic zones, temperate in the North tropical in the South, Morocco is distinguished by four types of climate: humid, sub-humid, semi-arid, and arid. The last decades attest to the progression of the semi-arid climate towards the North of the country. The IPCC projections, which have been made in this direction, show that there is an overall downward trend in rainfall contributions varying on average between 10% and 30% depending on the scenario selected and the region considered, they also show an upward trend in average annual temperatures. These trends will have a real impact on water resources, which will result in a drop in the volume of water resources varying between 7.6% and 40.6%. The present study aims to describe the meteorological conditions of Morocco in order to answer the problem dealing with the effect of climatic fluctuations on water resources and to assess water vulnerability in the face of climate change. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=morocco" title="morocco">morocco</a>, <a href="https://publications.waset.org/abstracts/search?q=climate%20change" title=" climate change"> climate change</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20resources" title=" water resources"> water resources</a>, <a href="https://publications.waset.org/abstracts/search?q=impact" title=" impact"> impact</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20scarcity" title=" water scarcity"> water scarcity</a> </p> <a href="https://publications.waset.org/abstracts/157877/impact-of-climate-change-on-water-resources-in-morocco" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157877.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">86</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">37</span> Microwave Assisted Synthesis and Metal Complexes of Some Copolymers Based on Itaconic Acid</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20H.%20El-Newehy">Mohamed H. El-Newehy</a>, <a href="https://publications.waset.org/abstracts/search?q=Sameh%20M.%20Osman"> Sameh M. Osman</a>, <a href="https://publications.waset.org/abstracts/search?q=Moamen%20S.%20Refat"> Moamen S. Refat</a>, <a href="https://publications.waset.org/abstracts/search?q=Salem%20S.%20Al-Deyab"> Salem S. Al-Deyab</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayman%20El-Faham"> Ayman El-Faham</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The two copolymers itaconic acid-methyl methacrylate and itaconic acid-acrylamide have been prepared in different ratio by radical copolymerization in the presence of azobisisobutyronitrile (AIBN) as initiator and using 2-butanone as reaction medium using microwave irradiation. The microwave technique is safe, fast, and gives high yield of the products with high purity in an optimum time, comparing to the traditional conventional heating. All the prepared copolymers were characterized by FT-IR, thermal analysis and elemental microanalysis. The itaconic acid-based copolymers showed a good sensitivity in alkaline media for scavenging Cu (II) and Pb (II). The chelation behavior of both Cu (II) and Pb (II) complexes were checked using FT-IR, thermogravimetric analysis (TGA), and differential scanning calorimetery (DSC). The infrared data are in a good agreement with the coordination through carboxylate-to-metal, in which the copolymers acting as a bidentate ligand. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microwave%20synthesis" title="microwave synthesis">microwave synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=itaconic%20acid" title=" itaconic acid"> itaconic acid</a>, <a href="https://publications.waset.org/abstracts/search?q=copolymerization" title=" copolymerization"> copolymerization</a>, <a href="https://publications.waset.org/abstracts/search?q=scavenging" title=" scavenging"> scavenging</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20stability" title=" thermal stability"> thermal stability</a> </p> <a href="https://publications.waset.org/abstracts/16998/microwave-assisted-synthesis-and-metal-complexes-of-some-copolymers-based-on-itaconic-acid" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16998.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">458</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">36</span> An Efficient Design of Static Synchronous Series Compensator Based Fractional Order PID Controller Using Invasive Weed Optimization Algorithm</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Choucha">Abdelghani Choucha</a>, <a href="https://publications.waset.org/abstracts/search?q=Lakhdar%20Chaib"> Lakhdar Chaib</a>, <a href="https://publications.waset.org/abstracts/search?q=Salem%20Arif"> Salem Arif</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper treated the problem of power system stability with the aid of Static Synchronous Series Compensator (SSSC) installed in the transmission line of single machine infinite bus (SMIB) power system. A fractional order PID (FOPID) controller has been applied as a robust controller for optimal SSSC design to control the power system characteristics. Additionally, the SSSC based FOPID parameters are smoothly tuned using Invasive Weed Optimization algorithm (IWO). To verify the strength of the proposed controller, SSSC based FOPID controller is validated in a wide range of operating condition and compared with the conventional scheme SSSC-POD controller. The main purpose of the proposed process is greatly enhanced the dynamic states of the tested system. Simulation results clearly prove the superiority and performance of the proposed controller design. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=SSSC-FOPID" title="SSSC-FOPID">SSSC-FOPID</a>, <a href="https://publications.waset.org/abstracts/search?q=SSSC-POD" title=" SSSC-POD"> SSSC-POD</a>, <a href="https://publications.waset.org/abstracts/search?q=SMIB%20power%20system" title=" SMIB power system"> SMIB power system</a>, <a href="https://publications.waset.org/abstracts/search?q=invasive%20weed%20optimization%20algorithm" title=" invasive weed optimization algorithm"> invasive weed optimization algorithm</a> </p> <a href="https://publications.waset.org/abstracts/78908/an-efficient-design-of-static-synchronous-series-compensator-based-fractional-order-pid-controller-using-invasive-weed-optimization-algorithm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78908.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">188</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">35</span> Investigation of Internal Gettering at Low Temperatures of Metallic Elements in HEM Wafers mc-Si for Photovoltaic Solar Cells</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Boucheham">Abdelghani Boucheham</a>, <a href="https://publications.waset.org/abstracts/search?q=Djoudi%20Bouhafs"> Djoudi Bouhafs</a>, <a href="https://publications.waset.org/abstracts/search?q=Nabil%20Khelifati"> Nabil Khelifati</a>, <a href="https://publications.waset.org/abstracts/search?q=Baya%20Palahouane"> Baya Palahouane</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main aim of this study is to investigate the low temperature internal gettering of manganese and chromium transition metals content in p-type multicrystalline silicon grown by Heat Exchanger Method (HEM). The minority carrier lifetime variation, the transition metal elements behavior, the sheet resistivity and the interstitial oxygen concentration after different temperatures annealing under N2 ambient were investigated using quasi-steady state photoconductance technique (QSSPC), secondary ion mass spectroscopy (SIMS), four-probe measurement and Fourier transform infrared spectrometer (FTIR), respectively. The obtained results indicate in the temperature range of 300掳C to 700掳C that the effective lifetime increases and reaches its maximum values of 28 渭s at 500 掳C and decreasing to 6 渭s at 700 掳C. This amelioration is due probably to metallic impurities internal gettering in the extended defects and in the oxygen precipitates as observed on SIMS profiles and the FTIR spectra. From 300 掳C to 500 掳C the sheet resistivity values rest unchanged at 30 Ohm/sq and rises significantly to reach 45 Ohm/sq for T> 500 掳C. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mc-Si" title="mc-Si">mc-Si</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20temperature%20annealing" title=" low temperature annealing"> low temperature annealing</a>, <a href="https://publications.waset.org/abstracts/search?q=internal%20gettering" title=" internal gettering"> internal gettering</a>, <a href="https://publications.waset.org/abstracts/search?q=minority%20carrier%20lifetime" title=" minority carrier lifetime"> minority carrier lifetime</a>, <a href="https://publications.waset.org/abstracts/search?q=interstitial%20oxygen" title=" interstitial oxygen"> interstitial oxygen</a>, <a href="https://publications.waset.org/abstracts/search?q=resistivity" title=" resistivity"> resistivity</a> </p> <a href="https://publications.waset.org/abstracts/1593/investigation-of-internal-gettering-at-low-temperatures-of-metallic-elements-in-hem-wafers-mc-si-for-photovoltaic-solar-cells" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1593.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">307</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">34</span> Geostatistical and Geochemical Study of the Aquifer System Waters Complex Terminal in the Valley of Oued Righ-Arid Area Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Asma%20Bettahar">Asma Bettahar</a>, <a href="https://publications.waset.org/abstracts/search?q=Imed%20Eddine%20Nezli"> Imed Eddine Nezli</a>, <a href="https://publications.waset.org/abstracts/search?q=Sameh%20Habes"> Sameh Habes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Groundwater resources in the Oued Righ valley are represented like the parts of the eastern basin of the Algerian Sahara, superposed by two major aquifers: the Intercalary Continental (IC) and the Terminal Complex (TC). From a qualitative point of view, various studies have highlighted that the waters of this region showed excessive mineralization, including the waters of the terminal complex (EC Avg equal 5854.61 S/cm) .The present article is a statistical approach by two multi methods various complementary (ACP, CAH), applied to the analytical data of multilayered aquifer waters Terminal Complex of the Oued Righ valley. The approach is to establish a correlation between the chemical composition of water and the lithological nature of different aquifer levels formations, and predict possible connection between groundwater鈥檚 layers. The results show that the mineralization of water is from geological origin. They concern the composition of the layers that make up the complex terminal. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=complex%20terminal" title="complex terminal">complex terminal</a>, <a href="https://publications.waset.org/abstracts/search?q=mineralization" title=" mineralization"> mineralization</a>, <a href="https://publications.waset.org/abstracts/search?q=oued%20righ" title=" oued righ"> oued righ</a>, <a href="https://publications.waset.org/abstracts/search?q=statistical%20approach" title=" statistical approach"> statistical approach</a> </p> <a href="https://publications.waset.org/abstracts/45556/geostatistical-and-geochemical-study-of-the-aquifer-system-waters-complex-terminal-in-the-valley-of-oued-righ-arid-area-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45556.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">387</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">33</span> Evolution of Chemistry in the Waters of Superposed Aquifer System Terminal Complex in the Valley of the Oued Righ - Arid Area Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Asma%20Bettahar">Asma Bettahar</a>, <a href="https://publications.waset.org/abstracts/search?q=Imed%20Eldine%20Nezli"> Imed Eldine Nezli</a>, <a href="https://publications.waset.org/abstracts/search?q=Sameh%20Habes"> Sameh Habes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Groundwater resources in the Oued Righ valley are represented like the parts of the eastern basin of the Algerian Sahara, superposed by two major aquifers: the Intercalary Continental (IC) and the Terminal Complex (TC). From a qualitative point of view, various studies have highlighted that the waters of this region showed excessive mineralization, including the waters of the terminal complex (EC Avg equal 5854.61 S/cm). The present article is a statistical approach by two multi methods various complementary (ACP CAH), applied to the analytical data of multilayered aquifer waters Terminal Complex of the Oued Righ valley. The approach is to establish a correlation between the chemical composition of water and the lithological nature of different aquifer levels formations, and predict possible connection between groundwater鈥檚 layers. The results show that the mineralization of water is from geological origin. They concern the composition of the layers that make up the complex terminal. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=oued%20righ" title="oued righ">oued righ</a>, <a href="https://publications.waset.org/abstracts/search?q=complex%20terminal" title=" complex terminal"> complex terminal</a>, <a href="https://publications.waset.org/abstracts/search?q=infill%20continental" title=" infill continental"> infill continental</a>, <a href="https://publications.waset.org/abstracts/search?q=mineralization" title=" mineralization"> mineralization</a> </p> <a href="https://publications.waset.org/abstracts/32197/evolution-of-chemistry-in-the-waters-of-superposed-aquifer-system-terminal-complex-in-the-valley-of-the-oued-righ-arid-area-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32197.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">450</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">32</span> Urban Heritage and Its Role in the Tourism Development in Yemen: Case Study of Historic Town of Zabid</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yasser%20Alhiagi">Yasser Alhiagi</a>, <a href="https://publications.waset.org/abstracts/search?q=Moshalleh%20Almoraekhi"> Moshalleh Almoraekhi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sameh%20Refaat"> Sameh Refaat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Urban heritage has an important status in the process of developing the Yemeni tourism sector. Urban heritage in Yemen differs depending on the regions and historical cities such as City of Old Sana'a, Historic Town of Zabid, Shibam Hadhramout, Taiz, and others. Zabid is an old town with a long history, founded in the 9th century. It has been the capital of Yemen from the 13th to the 15th century and played, because of its Islamic university, an important role in the Arab and Muslim world for many centuries. The aim of this research is to promote the built heritage of Historic Town of Zabid and explore the possibilities of visiting the rehabilitated buildings and other heritage attractions through tourism. It examines the nature of the relationship exists between tourism and built heritage. The research is intended to contribute to the strategy development of national tourism for the purpose of protecting, developing, and utilizing cultural heritage. Also, the research depended chiefly on the results of a field work proposed to be carried out at Historic Town of Zabid. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=historic%20town%20of%20Zabid" title="historic town of Zabid">historic town of Zabid</a>, <a href="https://publications.waset.org/abstracts/search?q=strategy" title=" strategy"> strategy</a>, <a href="https://publications.waset.org/abstracts/search?q=tourism%20development" title=" tourism development"> tourism development</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20heritage" title=" urban heritage"> urban heritage</a> </p> <a href="https://publications.waset.org/abstracts/54049/urban-heritage-and-its-role-in-the-tourism-development-in-yemen-case-study-of-historic-town-of-zabid" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54049.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">324</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">31</span> Collaborative and Context-Aware Learning Approach Using Mobile Technology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sameh%20Baccari">Sameh Baccari</a>, <a href="https://publications.waset.org/abstracts/search?q=Mahmoud%20Neji"> Mahmoud Neji</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years, the rapid developments on mobile devices and wireless technologies enable new dimension capabilities for the learning domain. This dimension facilitates people daily activities and shortens the distances between individuals. When these technologies have been used in learning, a new paradigm has been emerged giving birth to mobile learning. Because of the mobility feature, m-learning courses have to be adapted dynamically to the learner鈥檚 context. The main challenge in context-aware mobile learning is to develop an approach building the best learning resources according to dynamic learning situations. In this paper, we propose a context-aware mobile learning system called Collaborative and Context-aware Mobile Learning System (CCMLS). It takes into account the requirements of Mobility, Collaboration and Context-Awareness. This system is based on the semantic modeling of the learning context and the learning content. The adaptation part of this approach is made up of adaptation rules to propose and select relevant resources, learning partners and learning activities based not only on the user鈥檚 needs, but also on its current context. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mobile%20learning" title="mobile learning">mobile learning</a>, <a href="https://publications.waset.org/abstracts/search?q=mobile%20technologies" title=" mobile technologies"> mobile technologies</a>, <a href="https://publications.waset.org/abstracts/search?q=context-awareness" title=" context-awareness"> context-awareness</a>, <a href="https://publications.waset.org/abstracts/search?q=collaboration" title=" collaboration"> collaboration</a>, <a href="https://publications.waset.org/abstracts/search?q=semantic%20web" title=" semantic web"> semantic web</a>, <a href="https://publications.waset.org/abstracts/search?q=adaptation%20engine" title=" adaptation engine"> adaptation engine</a>, <a href="https://publications.waset.org/abstracts/search?q=adaptation%20strategy" title=" adaptation strategy"> adaptation strategy</a>, <a href="https://publications.waset.org/abstracts/search?q=learning%20object" title=" learning object"> learning object</a>, <a href="https://publications.waset.org/abstracts/search?q=learning%20context" title=" learning context"> learning context</a> </p> <a href="https://publications.waset.org/abstracts/86589/collaborative-and-context-aware-learning-approach-using-mobile-technology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86589.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">308</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">30</span> Chemical Profiling of Farsetia Aegyptia Turra and Farsetia Longisiliqua Decne. and Their Chemosystematic Significance</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mona%20M.%20Marzouk">Mona M. Marzouk</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Elkhateeb"> Ahmed Elkhateeb</a>, <a href="https://publications.waset.org/abstracts/search?q=Mona%20Elshabrawy"> Mona Elshabrawy</a>, <a href="https://publications.waset.org/abstracts/search?q=Mai%20M.%20Farid"> Mai M. Farid</a>, <a href="https://publications.waset.org/abstracts/search?q=Salwa%20A.%20Kawashty"> Salwa A. Kawashty</a>, <a href="https://publications.waset.org/abstracts/search?q=EL-Sayed%20S.%20Abdel-Hameed"> EL-Sayed S. Abdel-Hameed</a>, <a href="https://publications.waset.org/abstracts/search?q=Sameh%20R.%20Hussein"> Sameh R. Hussein</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The genus Farsetia Turra belongs to the family Brassicaceae and has approximately 30 accepted species distributed worldwide. Amongst them, Farsetia aegyptia Turra and Farsetia longisiliqua Decne. are two common species characteristic to the Egyptian flora. The present study considers the first characterization of the chemical constituents of F. longisiliqua, aiming to compare with those identified from the medicinal species (F. aegyptia). Additionally, the chemosystematic relationships between the two studied species were evaluated and highlight the medicinal importance for F. longisiliqua. The chemical profiling of their aqueous methanol extracts were carried out using the LC-ESI-MS technique and afforded 54 compounds belonging to different chemical groups. Flavonoids are the major constituents and are represented by 32 compounds (two C-glycosyl flavone, four flavones, and 26 flavonols). Their structural variations and common constituents confirmed the chemosystematic significance of the two species. Moreover, the flavonoid profiles showed major common constituents between the two investigated species, which predicted the medicinal importance of F. longisiliqua. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=brassicaceae" title="brassicaceae">brassicaceae</a>, <a href="https://publications.waset.org/abstracts/search?q=chemosystematics" title=" chemosystematics"> chemosystematics</a>, <a href="https://publications.waset.org/abstracts/search?q=farsetia" title=" farsetia"> farsetia</a>, <a href="https://publications.waset.org/abstracts/search?q=flavonoids" title=" flavonoids"> flavonoids</a>, <a href="https://publications.waset.org/abstracts/search?q=glucosinolates" title=" glucosinolates"> glucosinolates</a>, <a href="https://publications.waset.org/abstracts/search?q=LC-ESI-MS" title=" LC-ESI-MS"> LC-ESI-MS</a> </p> <a href="https://publications.waset.org/abstracts/131531/chemical-profiling-of-farsetia-aegyptia-turra-and-farsetia-longisiliqua-decne-and-their-chemosystematic-significance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131531.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">209</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">29</span> Protecting the Privacy and Trust of VIP Users on Social Network Sites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nidal%20F.%20Shilbayeh">Nidal F. Shilbayeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Sameh%20T.%20Khuffash"> Sameh T. Khuffash</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20H.%20Allymoun"> Mohammad H. Allymoun</a>, <a href="https://publications.waset.org/abstracts/search?q=Reem%20Al-Saidi"> Reem Al-Saidi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There is a real threat on the VIPs personal pages on the Social Network Sites (SNS). The real threats to these pages is violation of privacy and theft of identity through creating fake pages that exploit their names and pictures to attract the victims and spread of lies. In this paper, we propose a new secure architecture that improves the trusting and finds an effective solution to reduce fake pages and possibility of recognizing VIP pages on SNS. The proposed architecture works as a third party that is added to Facebook to provide the trust service to personal pages for VIPs. Through this mechanism, it works to ensure the real identity of the applicant through the electronic authentication of personal information by storing this information within content of their website. As a result, the significance of the proposed architecture is that it secures and provides trust to the VIPs personal pages. Furthermore, it can help to discover fake page, protect the privacy, reduce crimes of personality-theft, and increase the sense of trust and satisfaction by friends and admirers in interacting with SNS. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=social%20network%20sites" title="social network sites">social network sites</a>, <a href="https://publications.waset.org/abstracts/search?q=online%20social%20network" title=" online social network"> online social network</a>, <a href="https://publications.waset.org/abstracts/search?q=privacy" title=" privacy"> privacy</a>, <a href="https://publications.waset.org/abstracts/search?q=trust" title=" trust"> trust</a>, <a href="https://publications.waset.org/abstracts/search?q=security%20and%20authentication" title=" security and authentication"> security and authentication</a> </p> <a href="https://publications.waset.org/abstracts/14456/protecting-the-privacy-and-trust-of-vip-users-on-social-network-sites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14456.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">381</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28</span> Improving the Performance of DBE Structure in Pressure Flushing Using Submerged Vanes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sepideh%20Beiramipour">Sepideh Beiramipour</a>, <a href="https://publications.waset.org/abstracts/search?q=Hadi%20Haghjouei"> Hadi Haghjouei</a>, <a href="https://publications.waset.org/abstracts/search?q=Kourosh%20Qaderi"> Kourosh Qaderi</a>, <a href="https://publications.waset.org/abstracts/search?q=Majid%20Rahimpour"> Majid Rahimpour</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20M.%20Ahmadi"> Mohammad M. Ahmadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sameh%20A.%20Kantoush"> Sameh A. Kantoush</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Reservoir sedimentation is one of the main challenges by which the reservoir behind the dam is filled with sediments transferred through the river flow. Pressure flushing method is an effective way to drain the deposited sediments of the reservoirs through the bottom outlet. So far, several structural methods have been proposed to increase the efficiency of pressure flushing. The aim of this study is to increase the performance of Dendritic Bottomless Extended (DBE) structure on the efficiency of pressurized sediment flushing using submerged vanes. For this purpose, the physical model of the dam reservoir with dimensions of 7.5 m in length, 3.5 m in width, and 1.8 m in height in the hydraulic and water structures research laboratory of Shahid Bahonar University of Kerman was used. In order to investigate the influence of submerged vanes on the performance of DBE structure in pressure flushing, the best arrangement and geometric parameters of the vanes were selected and combined with the DBE structure. The results showed that the submerged vanes significantly increased the performance of the DBE structure so that the volume of the sediment flushing cone with the combination of two structures increased by 3.7 times compared to the DBE structure test. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dendritic%20bottomless%20extended%20structure" title="dendritic bottomless extended structure">dendritic bottomless extended structure</a>, <a href="https://publications.waset.org/abstracts/search?q=flushing%20efficiency" title=" flushing efficiency"> flushing efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=sedimentation" title=" sedimentation"> sedimentation</a>, <a href="https://publications.waset.org/abstracts/search?q=sediment%20flushing" title=" sediment flushing"> sediment flushing</a> </p> <a href="https://publications.waset.org/abstracts/141430/improving-the-performance-of-dbe-structure-in-pressure-flushing-using-submerged-vanes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/141430.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">223</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">27</span> Effect of Humic Substance on Ex-Vitro Propagation of Saffron (Crocus Sativus L.)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20Tahiri">Abdelghani Tahiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Youssef%20Karra"> Youssef Karra</a>, <a href="https://publications.waset.org/abstracts/search?q=Naima%20Ait%20Aabd"> Naima Ait Aabd</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelaziz%20Mimouni"> Abdelaziz Mimouni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Saffron (Crocus sativus L.), the most expensive spice in the world derived from the stigmas, is an autumn-flowering and sterile triploid (2n=3x=24) geophyte species that belong to the Iridaceae family. This plant species is mainly propagated vegetatively through the formation of daughter corms from the mother one. Low multiplication rates of daughter corms under natural conditions, along with fungal contamination, significantly reduce the productivity and quality of saffron corms. The development of efficient and sustainable strategies for rapid and large-scale production of selected cultivars of saffron will be desired. For this, the main objective of this work is to improve the vegetative propagation of saffron under ex-vitro conditions. Preliminary results of the influence of increasing doses of humic substances (HS) on the growth and multiplication of corms under greenhouse conditions are evaluated. The obtained data shows that the effect of HS depends on the concentration used and the mode of application. Indeed, the application through irrigation has increased the number of shoots and corms, but it has reduced other parameters. On the other hand, the temporary treatment has improved all observed parameters except for the number of shoots and corms. Results obtained in this work suggest that it is possible to improve the propagation of saffron corms under greenhouse conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=saffron" title="saffron">saffron</a>, <a href="https://publications.waset.org/abstracts/search?q=Crocus%20sativus%20L." title=" Crocus sativus L."> Crocus sativus L.</a>, <a href="https://publications.waset.org/abstracts/search?q=corm" title=" corm"> corm</a>, <a href="https://publications.waset.org/abstracts/search?q=humic%20substances" title=" humic substances"> humic substances</a> </p> <a href="https://publications.waset.org/abstracts/132968/effect-of-humic-substance-on-ex-vitro-propagation-of-saffron-crocus-sativus-l" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/132968.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">211</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">26</span> Typology of the Physic-Chemical Quality of the Water of the Area of Touggourt Case: Aquifers of the Intercalary Continental and the Terminal Complex, S-E of Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Habes%20Sameh">Habes Sameh</a>, <a href="https://publications.waset.org/abstracts/search?q=Bettahar%20Asma"> Bettahar Asma</a>, <a href="https://publications.waset.org/abstracts/search?q=Nezli%20Imad%20Eddine"> Nezli Imad Eddine</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The region of Touggourt is situated in the southern part is Algeria, it receives important quantities of waters, the latter are extracted from the fossil groundwater (the Intercalary Continental and the Terminal Complex). The mineralization of these waters of the Terminal Complex is between 3 and 6,5 g/l and for waters of Intercalary Continental is 1,8 and 8,7 g/l, thus it constitutes an obstacle as for its use. To highlight the origins of this mineralization, we used the hydrochemical tool. So the chemical analyses in our ownership, were treated by means of the software "Statistica", what allowed us to realize an analysis in main components (ACP), the latter showed a competition between sodic or magnesian chlorinated water and calcic bicarbonate water, rich in potassium for the TC, while for the IC, we have a competition between sodic or calcic chlorinated and magnesian water treated with copper sulphate waters. The simulation realized thermodynamics showed a variation of the index of saturation which do not exceed zero, for waters of two aquifer TC and IC, so indicating one under saturation of waters towards minerals, highlighting the influence of the geologic formation in the outcrop on the quality of waters. However, we notice that these waters remain acceptable for the irrigation of plants but must be treated before what are consumed by the human being. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ACP" title="ACP">ACP</a>, <a href="https://publications.waset.org/abstracts/search?q=intercalary" title=" intercalary"> intercalary</a>, <a href="https://publications.waset.org/abstracts/search?q=continental" title=" continental"> continental</a>, <a href="https://publications.waset.org/abstracts/search?q=mineralization" title=" mineralization"> mineralization</a>, <a href="https://publications.waset.org/abstracts/search?q=SI" title=" SI"> SI</a>, <a href="https://publications.waset.org/abstracts/search?q=Terminal%20Complex" title=" Terminal Complex"> Terminal Complex</a> </p> <a href="https://publications.waset.org/abstracts/22540/typology-of-the-physic-chemical-quality-of-the-water-of-the-area-of-touggourt-case-aquifers-of-the-intercalary-continental-and-the-terminal-complex-s-e-of-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22540.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">528</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">25</span> Experimental Study on Improving the Engineering Properties of Sand Dunes Using Random Fibers-Geogrid Reinforcement</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adel%20M.%20Belal">Adel M. Belal</a>, <a href="https://publications.waset.org/abstracts/search?q=Sameh%20Abu%20El-Soud"> Sameh Abu El-Soud</a>, <a href="https://publications.waset.org/abstracts/search?q=Mariam%20Farid"> Mariam Farid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study presents the effect of reinforcement inclusions (fibers-geogrids) on fine sand bearing capacity under strip footings. Experimental model tests were carried out using a rectangular plates [(10cm x 38 cm), (7.5 cm x 38 cm), and (12.5 cm x 38 cm)] with a geogrids and randomly reinforced fibers. The width and depth of the geogrid were varied to determine their effects on the engineering properties of treated poorly graded fine sand. Laboratory model test results for the ultimate stresses and the settlement of a rigid strip foundation supported by single and multi-layered fiber-geogrid-reinforced sand are presented. The number of layers of geogrid was varied between 1 to 4. The effect of the first geogrid reinforcement depth, the spacing between the reinforcement and its length on the bearing capacity is investigated by experimental program. Results show that the use of flexible random fibers with a content of 0.125% by weight of the treated sand dunes, with 3 geogrid reinforcement layers, u/B= 0.25 and L/B=7.5, has a significant increase in the bearing capacity of the proposed system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=earth%20reinforcement" title="earth reinforcement">earth reinforcement</a>, <a href="https://publications.waset.org/abstracts/search?q=geogrid" title=" geogrid"> geogrid</a>, <a href="https://publications.waset.org/abstracts/search?q=random%20fiber" title=" random fiber"> random fiber</a>, <a href="https://publications.waset.org/abstracts/search?q=reinforced%20soil" title=" reinforced soil"> reinforced soil</a> </p> <a href="https://publications.waset.org/abstracts/65076/experimental-study-on-improving-the-engineering-properties-of-sand-dunes-using-random-fibers-geogrid-reinforcement" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65076.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">312</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">24</span> Microstructural Investigation and Fatigue Damage Quantification of Anisotropic Behavior in AA2017 Aluminum Alloy under Cyclic Loading</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelghani%20May">Abdelghani May</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper reports on experimental investigations concerning the underlying reasons for the anisotropic behavior observed during the cyclic loading of AA2017 aluminum alloy. Initially, we quantified the evolution of fatigue damage resulting from controlled proportional cyclic loadings along the axial and shear directions. Our primary objective at this stage was to verify the anisotropic mechanical behavior recently observed. To accomplish this, we utilized various models of fatigue damage quantification and conducted a comparative study of the obtained results. Our analysis confirmed the anisotropic nature of the material under investigation. In the subsequent step, we performed microstructural investigations aimed at understanding the origins of the anisotropic mechanical behavior. To this end, we utilized scanning electron microscopy to examine the phases and precipitates in both the transversal and longitudinal sections. Our findings indicate that the structure and morphology of these entities are responsible for the anisotropic behavior observed in the aluminum alloy. Furthermore, results obtained from Kikuchi diagrams, pole figures, and inverse pole figures have corroborated these conclusions. These findings demonstrate significant differences in the crystallographic texture of the material. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microstructural%20investigation" title="microstructural investigation">microstructural investigation</a>, <a href="https://publications.waset.org/abstracts/search?q=fatigue%20damage%20quantification" title=" fatigue damage quantification"> fatigue damage quantification</a>, <a href="https://publications.waset.org/abstracts/search?q=anisotropic%20behavior" title=" anisotropic behavior"> anisotropic behavior</a>, <a href="https://publications.waset.org/abstracts/search?q=AA2017%20aluminum%20alloy" title=" AA2017 aluminum alloy"> AA2017 aluminum alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=cyclic%20loading" title=" cyclic loading"> cyclic loading</a>, <a href="https://publications.waset.org/abstracts/search?q=crystallographic%20texture" title=" crystallographic texture"> crystallographic texture</a>, <a href="https://publications.waset.org/abstracts/search?q=scanning%20electron%20microscopy" title=" scanning electron microscopy"> scanning electron microscopy</a> </p> <a href="https://publications.waset.org/abstracts/165414/microstructural-investigation-and-fatigue-damage-quantification-of-anisotropic-behavior-in-aa2017-aluminum-alloy-under-cyclic-loading" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165414.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">76</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" 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