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Hamed</title> <meta name="description" content="Search results for: Nadim Hamed"> <meta name="keywords" content="Nadim Hamed"> <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="Nadim Hamed"> <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> 196</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Nadim Hamed</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">196</span> The Future Shrouded by the Ghost of History: Palestinian Science Fiction "The Key"</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=KongQue">KongQue</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Palestinian novelist Anwar Hamed’s work "The Key" is a science fiction that profoundly metaphors the Palestinian issue. In the novel, Anwar Hamed uses the "key", a popular symbol of Palestinian resistance culture, to symbolize the history of "Nakba" and the Palestinians' right to return, and uses the ghost lingering outside the door of the Israelis as a metaphor Palestinians and the Palestinian issue, for being covered, hidden, and turned a blind eye. Through the literary genre of science fiction, Anwar Hamed continues the literary tradition of Palestinian writers recreating the historical trauma of the Palestinians, explores the causes of the inability to communicate between Palestine and Israel, and attempts to reawaken concern over the plight of Palestinian refugees. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=palestine" title="palestine">palestine</a>, <a href="https://publications.waset.org/abstracts/search?q=key" title=" key"> key</a>, <a href="https://publications.waset.org/abstracts/search?q=science%20fiction" title=" science fiction"> science fiction</a>, <a href="https://publications.waset.org/abstracts/search?q=arabic%20literature" title=" arabic literature"> arabic literature</a> </p> <a href="https://publications.waset.org/abstracts/175597/the-future-shrouded-by-the-ghost-of-history-palestinian-science-fiction-the-key" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/175597.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">71</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">195</span> Study of the Prevalence, Associated Factors and Impact of Maternal Perinatal Depression in Women Alexandria 2022</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nermeen%20Saad%20Elbeltagy">Nermeen Saad Elbeltagy</a>, <a href="https://publications.waset.org/abstracts/search?q=Hoda%20Ghareeb"> Hoda Ghareeb</a>, <a href="https://publications.waset.org/abstracts/search?q=Hesham%20Adel%20Elsheshtawy"> Hesham Adel Elsheshtawy</a>, <a href="https://publications.waset.org/abstracts/search?q=Nadim%20Hamed"> Nadim Hamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Amany%20Ibrahim%20Mostafa"> Amany Ibrahim Mostafa</a>, <a href="https://publications.waset.org/abstracts/search?q=Sara%20Hazem%20Hassan"> Sara Hazem Hassan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Depression is one of the most common mental health problems occurring in women during their child bearing years. Perinatal depression refers to major and minor depressive episodes that occur either during pregnancy or aer delivery. Although perinatal depression is common in developing countries, it is under-recognized in low and middle income countries making a substantial contribution to maternal and infant morbidity and mortality. About 12.5 - 42% of pregnant women and, 12 - 50% of post natal mothers in low and middle income countries such as Ethiopia had depression AIM OF THE WORK: To study prevalence, associated factors and impact of maternal perinatal depression in Alexandria. Patients and method: This study was conducted on 300 mothers at the postnatal ward in ElShatby Maternity Hospital from April 2022 unl October 2022. Females with past history of depression before pregnancy or females who receive medications inducing depression were excluded. The participants were asked to complete the questionnaire that includes the Edinburgh Postnatal Depression Scale (EPDS) as a screening test to obtain information concerning the current frame of mind at antepartum, partum and postpartum periods Results: The prevalence of perinatal depression was 22.3%. It was found that there is a significant negave moderate correlation between socioeconomic status and perinatal depression(r=-0.42). The present study revealed that about two thirds (60.7%) of postpartum women had low socioeconomic level. Also, less than one fourth (20%) of parents had high education and only one fourth (25.3%) of postpartum women were working. There was a statically significance difference between the number of previous abortions and perinatal depression (p=0.04). There was a significant moderate correlation between the amount of blood lost during delivery and an increased risk of developing postpartum depression. The prevalence of perinatal depression was high in cases of female neonates more than male ones. Conclusion: the prevalence of perinatal depression among the studied women was 22.3% of studied group. The significant factors identified in this study can be targeted to reduce the occurrence of perinatal depression among pregnant women in Alexandria through appropriate health interventions which includes perinatal depression screening, counseling, and the provision of support for pregnant women during antenatal care as well as lifestyle modification. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mental%20health" title="mental health">mental health</a>, <a href="https://publications.waset.org/abstracts/search?q=depression%20in%20pregnancy" title=" depression in pregnancy"> depression in pregnancy</a>, <a href="https://publications.waset.org/abstracts/search?q=mental%20disorders" title=" mental disorders"> mental disorders</a>, <a href="https://publications.waset.org/abstracts/search?q=psychology%20in%20pregnancy" title=" psychology in pregnancy"> psychology in pregnancy</a> </p> <a href="https://publications.waset.org/abstracts/168477/study-of-the-prevalence-associated-factors-and-impact-of-maternal-perinatal-depression-in-women-alexandria-2022" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/168477.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">74</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">194</span> Use of Improved Genetic Algorithm in Cloud Computing to Reduce Energy Consumption in Migration of Virtual Machines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Marziyeh%20Bahrami">Marziyeh Bahrami</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Pahlevan%20Hsseini"> Hamed Pahlevan Hsseini</a>, <a href="https://publications.waset.org/abstracts/search?q=Behnam%20Ghamami"> Behnam Ghamami</a>, <a href="https://publications.waset.org/abstracts/search?q=Arman%20Alvanpour"> Arman Alvanpour</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Ezzati"> Hamed Ezzati</a>, <a href="https://publications.waset.org/abstracts/search?q=Amir%20Salar%20Sadeghi"> Amir Salar Sadeghi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> One of the ways to increase the efficiency of services in the system of agents and, of course, in the world of cloud computing, is to use virtualization techniques. The aim of this research is to create changes in cloud computing services that will reduce as much as possible the energy consumption related to the migration of virtual machines and, in some way, the energy related to the allocation of resources and reduce the amount of pollution. So far, several methods have been proposed to increase the efficiency of cloud computing services in order to save energy in the cloud environment. The method presented in this article tries to prevent energy consumption by data centers and the subsequent production of carbon and biological pollutants as much as possible by increasing the efficiency of cloud computing services. The results show that the proposed algorithm, using the improvement in virtualization techniques and with the help of a genetic algorithm, improves the efficiency of cloud services in the matter of migrating virtual machines and finally saves consumption. becomes energy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=consumption%20reduction" title="consumption reduction">consumption reduction</a>, <a href="https://publications.waset.org/abstracts/search?q=cloud%20computing" title=" cloud computing"> cloud computing</a>, <a href="https://publications.waset.org/abstracts/search?q=genetic%20algorithm" title=" genetic algorithm"> genetic algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=live%20migration" title=" live migration"> live migration</a>, <a href="https://publications.waset.org/abstracts/search?q=virtual%20Machine" title=" virtual Machine"> virtual Machine</a> </p> <a href="https://publications.waset.org/abstracts/185270/use-of-improved-genetic-algorithm-in-cloud-computing-to-reduce-energy-consumption-in-migration-of-virtual-machines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185270.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">60</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">193</span> Isolation and Identification of Diacylglycerol Acyltransferase Type-2 (GAT2) Genes from Three Egyptian Olive Cultivars</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yahia%20I.%20Mohamed">Yahia I. Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20I.%20Marzouk"> Ahmed I. Marzouk</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20A.%20Yacout"> Mohamed A. Yacout</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aim of this work was to study the genetic basis for oil accumulation in olive fruit via tracking DGAT2 (Diacylglycerol acyltransferase type-2) gene in three Egyptian Origen Olive cultivars namely Toffahi, Hamed and Maraki using molecular marker techniques and bioinformatics tools. Results illustrate that, firstly: specific genomic band of Maraki cultivars was identified as DGAT2 (Diacylglycerol acyltransferase type-2) and identical for this gene in Olea europaea with 100 % of similarity. Secondly, differential genomic band of Maraki cultivars which produced from RAPD fingerprinting technique reflected predicted distinguished sequence which identified as DGAT2 (Diacylglycerol acyltransferase type-2) in Fragaria vesca subsp. Vesca with 76% of sequential similarity. Third and finally, specific genomic specific band of Hamed cultivars was indentified as two fragments, 1-Olea europaea cultivar Koroneiki diacylglycerol acyltransferase type 2 mRNA, complete cds with two matches regions with 99% or 2-PREDICTED: Fragaria vesca subsp. vesca diacylglycerol O-acyltransferase 2-like (LOC101313050), mRNA with 86% of similarity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Olea%20europaea" title="Olea europaea">Olea europaea</a>, <a href="https://publications.waset.org/abstracts/search?q=fingerprinting" title=" fingerprinting"> fingerprinting</a>, <a href="https://publications.waset.org/abstracts/search?q=diacylglycerol%20acyltransferase%20type-2%20%28DGAT2%29" title=" diacylglycerol acyltransferase type-2 (DGAT2)"> diacylglycerol acyltransferase type-2 (DGAT2)</a>, <a href="https://publications.waset.org/abstracts/search?q=Egypt" title=" Egypt"> Egypt</a> </p> <a href="https://publications.waset.org/abstracts/15700/isolation-and-identification-of-diacylglycerol-acyltransferase-type-2-gat2-genes-from-three-egyptian-olive-cultivars" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15700.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">503</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">192</span> Review of Dielectric Permittivity Measurement Techniques</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20H.%20Abdelgwad">Ahmad H. Abdelgwad</a>, <a href="https://publications.waset.org/abstracts/search?q=Galal%20E.%20Nadim"> Galal E. Nadim</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20M.%20Said"> Tarek M. Said</a>, <a href="https://publications.waset.org/abstracts/search?q=Amr%20M.%20Gody"> Amr M. Gody</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The prime objective of this manuscript is to provide intensive review of the techniques used for permittivity measurements. The measurement techniques, relevant for any desired application, rely on the nature of the measured dielectric material, both electrically and physically, the degree of accuracy required, and the frequency of interest. Regardless of the way that distinctive sorts of instruments can be utilized, measuring devices that provide reliable determinations of the required electrical properties including the obscure material in the frequency range of interest can be considered. The challenge in making precise dielectric property or permittivity measurements is in designing of the material specimen holder for those measurements (RF and MW frequency ranges) and adequately modeling the circuit for reliable computation of the permittivity from the electrical measurements. If the RF circuit parameters such as the impedance or admittance are estimated appropriately at a certain frequency, the material’s permittivity at this frequency can be estimated by the equations which relate the way in which the dielectric properties of the material affect on the parameters of the circuit. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dielectric%20permittivity" title="dielectric permittivity">dielectric permittivity</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20space%20measurement" title=" free space measurement"> free space measurement</a>, <a href="https://publications.waset.org/abstracts/search?q=waveguide%20techniques" title=" waveguide techniques"> waveguide techniques</a>, <a href="https://publications.waset.org/abstracts/search?q=coaxial%20probe" title=" coaxial probe"> coaxial probe</a>, <a href="https://publications.waset.org/abstracts/search?q=cavity%20resonator" title=" cavity resonator"> cavity resonator</a> </p> <a href="https://publications.waset.org/abstracts/76451/review-of-dielectric-permittivity-measurement-techniques" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76451.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">369</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">191</span> Effect of Polarized Light Therapy on Oral Mucositis in Cancer Patients Receiving Chemotherapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zakaria%20Mowafy%20Emam%20Mowafy">Zakaria Mowafy Emam Mowafy</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Abd%20Allah%20Hamed"> Hamed Abd Allah Hamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Marwa%20Mahmoud%20Abd-Elmotalb"> Marwa Mahmoud Abd-Elmotalb</a>, <a href="https://publications.waset.org/abstracts/search?q=Andrew%20Anis%20Fakhray%20Mosaad"> Andrew Anis Fakhray Mosaad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this paper is to determine the efficacy of polarized light therapy for chemotherapy-treated cancer patients who have oral mucositis. Methods of evaluation are the measurement of the WHO oral mucositis scale and the common toxicity criteria scale. Methods: Thirty cancer patients receiving chemotherapy (males and females) who had oral mucositis and ulceration pain, and their ages ranged from 30 to 55 years, were divided into two groups. Group (A), composed of 15 patients, received the Bioptron light therapy (BLT) in addition to the routine medical care of oral mucositis. Group (B) received only the routine medical care of oral mucositis; the duration of the BLT application was 10 minutes applied daily for 30 days. Results and conclusion: Results showed that the application of the BLT had valuable healing effects on oral mucositis in cancer patients receiving chemotherapy, as evidenced by the high decreases of the WHO oral mucositis scale and the common toxicity criteria scale. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bioptron%20light%20therapy" title="Bioptron light therapy">Bioptron light therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=oral%20mucositis" title=" oral mucositis"> oral mucositis</a>, <a href="https://publications.waset.org/abstracts/search?q=WHO%20oral%20mucositis%20scale" title=" WHO oral mucositis scale"> WHO oral mucositis scale</a>, <a href="https://publications.waset.org/abstracts/search?q=common%20toxicity%20criteria%20scale" title=" common toxicity criteria scale"> common toxicity criteria scale</a> </p> <a href="https://publications.waset.org/abstracts/160462/effect-of-polarized-light-therapy-on-oral-mucositis-in-cancer-patients-receiving-chemotherapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/160462.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">190</span> Synthesizing an Artificial Loess for Geotechnical Investigations of Collapsible Soil Behavior</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Sadeghi">Hamed Sadeghi</a>, <a href="https://publications.waset.org/abstracts/search?q=Pouya%20A.%20Panahi"> Pouya A. Panahi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Nasiri"> Hamed Nasiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Sadeghi"> Mohammad Sadeghi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Collapsible soils like loess comprise an important category of problematic soils for construction purposes and sustainable development. As a result, research on both geological and geotechnical aspects of this type of soil have been in progress for decades. However, considerable natural variability in physical properties of in-situ loess strata even in a single block sample challenges the fundamental laboratory investigations. The reason behind this is that it is somehow impossible to remove the effect of a specific factor like void ratio from fair comparisons to come with a reliable conclusion. In order to cope with this limitation, two types of artificially made dispersive and calcareous loess are introduced which can be easily reproduced in any soil mechanics laboratory provided that all its compositions are known and controlled. The collapse potential is explored for a variety of soil water salinity and lime content and comparisons are made against the natural soil behavior. Trends are reported for the influence of pore water salinity on collapse potential under different osmotic flow conditions. The most important advantage of artificial loess is the ease of controlling cementing agent content like calcite or dispersive potential for studying their influence on mechanical soil behavior. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=artificial%20loess" title="artificial loess">artificial loess</a>, <a href="https://publications.waset.org/abstracts/search?q=unsaturated%20soils" title=" unsaturated soils"> unsaturated soils</a>, <a href="https://publications.waset.org/abstracts/search?q=collapse%20potential" title=" collapse potential"> collapse potential</a>, <a href="https://publications.waset.org/abstracts/search?q=dispersive%20clays" title=" dispersive clays"> dispersive clays</a>, <a href="https://publications.waset.org/abstracts/search?q=laboratory%20tests" title=" laboratory tests"> laboratory tests</a> </p> <a href="https://publications.waset.org/abstracts/109158/synthesizing-an-artificial-loess-for-geotechnical-investigations-of-collapsible-soil-behavior" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/109158.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">196</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">189</span> Sediment Patterns from Fluid-Bed Interactions: A Direct Numerical Simulations Study on Fluvial Turbulent Flows</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nadim%20Zgheib">Nadim Zgheib</a>, <a href="https://publications.waset.org/abstracts/search?q=Sivaramakrishnan%20Balachandar"> Sivaramakrishnan Balachandar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We present results on the initial formation of ripples from an initially flattened erodible bed. We use direct numerical simulations (DNS) of turbulent open channel flow over a fixed sinusoidal bed coupled with hydrodynamic stability analysis. We use the direct forcing immersed boundary method to account for the presence of the sediment bed. The resolved flow provides the bed shear stress and consequently the sediment transport rate, which is needed in the stability analysis of the Exner equation. The approach is different from traditional linear stability analysis in the sense that the phase lag between the bed topology, and the sediment flux is obtained from the DNS. We ran 11 simulations at a fixed shear Reynolds number of 180, but for different sediment bed wavelengths. The analysis allows us to sweep a large range of physical and modelling parameters to predict their effects on linear growth. The Froude number appears to be the critical controlling parameter in the early linear development of ripples, in contrast with the dominant role of particle Reynolds number during the equilibrium stage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=direct%20numerical%20simulation" title="direct numerical simulation">direct numerical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=immersed%20boundary%20method" title=" immersed boundary method"> immersed boundary method</a>, <a href="https://publications.waset.org/abstracts/search?q=sediment-bed%20interactions" title=" sediment-bed interactions"> sediment-bed interactions</a>, <a href="https://publications.waset.org/abstracts/search?q=turbulent%20multiphase%20flow" title=" turbulent multiphase flow"> turbulent multiphase flow</a>, <a href="https://publications.waset.org/abstracts/search?q=linear%20stability%20analysis" title=" linear stability analysis"> linear stability analysis</a> </p> <a href="https://publications.waset.org/abstracts/106327/sediment-patterns-from-fluid-bed-interactions-a-direct-numerical-simulations-study-on-fluvial-turbulent-flows" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106327.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">186</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">188</span> Effect of Intrinsic Point Defects on the Structural and Optical Properties of SnO₂ Thin Films Grown by Ultrasonic Spray Pyrolysis Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatiha%20Besahraoui">Fatiha Besahraoui</a>, <a href="https://publications.waset.org/abstracts/search?q=M%27hamed%20Guezzoul"> M'hamed Guezzoul</a>, <a href="https://publications.waset.org/abstracts/search?q=Kheira%20Chebbah"> Kheira Chebbah</a>, <a href="https://publications.waset.org/abstracts/search?q=M%27hamed%20Bouslama"> M'hamed Bouslama</a> </p> <p class="card-text"><strong>Abstract:</strong></p> SnO₂ thin film is characterized by Atomic Force Microscopy (AFM) and Photoluminescence Spectroscopies. AFM images show a dense surface of columnar grains with a roughness of 78.69 nm. The PL measurements at 7 K reveal the presence of PL peaks centered in IR and visible regions. They are attributed to radiative transitions via oxygen vacancies, Sn interstitials, and dangling bonds. A bands diagram model is presented with the approximate positions of intrinsic point defect levels in SnO₂ thin films. The integrated PL measurements demonstrate the good thermal stability of our sample, which makes it very useful in optoelectronic devices functioning at room temperature. The unusual behavior of the evolution of PL peaks and their full width at half maximum as a function of temperature indicates the thermal sensitivity of the point defects present in the band gap. The shallower energy levels due to dangling bonds and/or oxygen vacancies are more sensitive to the temperature. However, volume defects like Sn interstitials are thermally stable and constitute deep and stable energy levels for excited electrons. Small redshifting of PL peaks is observed with increasing temperature. This behavior is attributed to the reduction of oxygen vacancies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=transparent%20conducting%20oxide" title="transparent conducting oxide">transparent conducting oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=photoluminescence" title=" photoluminescence"> photoluminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=intrinsic%20point%20defects" title=" intrinsic point defects"> intrinsic point defects</a>, <a href="https://publications.waset.org/abstracts/search?q=semiconductors" title=" semiconductors"> semiconductors</a>, <a href="https://publications.waset.org/abstracts/search?q=oxygen%20vacancies" title=" oxygen vacancies"> oxygen vacancies</a> </p> <a href="https://publications.waset.org/abstracts/161707/effect-of-intrinsic-point-defects-on-the-structural-and-optical-properties-of-sno2-thin-films-grown-by-ultrasonic-spray-pyrolysis-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161707.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">85</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">187</span> Engineering in Saudi Arabia: Importance of Communications and Power Engineering</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamed%20D.%20Alsharari">Hamed D. Alsharari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper first analyses the current status regarding electrical engineering higher education in Saudi Arabian public universities. The paper focuses on the two EE sub-specialties most commonly present in Saudi Arabia, power and communications and discusses recruitment in this field, showing various market and employment demand for EE. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=communications" title="communications">communications</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20engineering" title=" electrical engineering"> electrical engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=higher%20education" title=" higher education"> higher education</a>, <a href="https://publications.waset.org/abstracts/search?q=Saudi%20Arabia" title=" Saudi Arabia"> Saudi Arabia</a>, <a href="https://publications.waset.org/abstracts/search?q=power" title=" power"> power</a> </p> <a href="https://publications.waset.org/abstracts/7100/engineering-in-saudi-arabia-importance-of-communications-and-power-engineering" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7100.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">407</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">186</span> Graphene Transistors Based Microwave Amplifiers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pejman%20Hosseinioun">Pejman Hosseinioun</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Safari"> Ali Safari</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Sarbazi"> Hamed Sarbazi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Graphene is a one-atom-thick sheet of carbon with numerous impressive properties. It is a promising material for future high-speed nanoelectronics due to its intrinsic superior carrier mobility and very high saturation velocity. These exceptional carrier transport properties suggest that graphene field effect transistors (G-FETs) can potentially outperform other FET technologies. In this paper, detailed discussions are introduced for Graphene Transistors Based Microwave Amplifiers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=graphene" title="graphene">graphene</a>, <a href="https://publications.waset.org/abstracts/search?q=microwave%20FETs" title=" microwave FETs"> microwave FETs</a>, <a href="https://publications.waset.org/abstracts/search?q=microwave%20amplifiers" title=" microwave amplifiers"> microwave amplifiers</a>, <a href="https://publications.waset.org/abstracts/search?q=transistors" title=" transistors "> transistors </a> </p> <a href="https://publications.waset.org/abstracts/20419/graphene-transistors-based-microwave-amplifiers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20419.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">493</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">185</span> Detect Circles in Image: Using Statistical Image Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fathi%20M.%20O.%20Hamed">Fathi M. O. Hamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Salma%20F.%20Elkofhaifee"> Salma F. Elkofhaifee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this work is to detect geometrical shape objects in an image. In this paper, the object is considered to be as a circle shape. The identification requires find three characteristics, which are number, size, and location of the object. To achieve the goal of this work, this paper presents an algorithm that combines from some of statistical approaches and image analysis techniques. This algorithm has been implemented to arrive at the major objectives in this paper. The algorithm has been evaluated by using simulated data, and yields good results, and then it has been applied to real data. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=image%20processing" title="image processing">image processing</a>, <a href="https://publications.waset.org/abstracts/search?q=median%20filter" title=" median filter"> median filter</a>, <a href="https://publications.waset.org/abstracts/search?q=projection" title=" projection"> projection</a>, <a href="https://publications.waset.org/abstracts/search?q=scale-space" title=" scale-space"> scale-space</a>, <a href="https://publications.waset.org/abstracts/search?q=segmentation" title=" segmentation"> segmentation</a>, <a href="https://publications.waset.org/abstracts/search?q=threshold" title=" threshold"> threshold</a> </p> <a href="https://publications.waset.org/abstracts/37141/detect-circles-in-image-using-statistical-image-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37141.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">432</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">184</span> Size Distribution Effect of InAs/InP Self–Organized Quantum Dots on Optical Properties </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Nouri">Abdelkader Nouri</a>, <a href="https://publications.waset.org/abstracts/search?q=M%E2%80%99hamed%20Bouslama"> M’hamed Bouslama</a>, <a href="https://publications.waset.org/abstracts/search?q=Faouzi%20Saidi"> Faouzi Saidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hassan%20Maaref"> Hassan Maaref</a>, <a href="https://publications.waset.org/abstracts/search?q=Michel%20Gendry"> Michel Gendry</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Self-organized InAs quantum dots (QDs) have been grown on 3,1% InP (110) lattice mismatched substrate by Solid Source Molecular Beam Epitaxy (SSMBE). Stranski-Krastanov mode growth has been used to create self-assembled 3D islands on InAs wetting layer (WL). The optical quality depending on the temperature and power is evaluated. In addition, Atomic Force Microscopy (AFM) images shows inhomogeneous island dots size distribution due to temperature coalescence. The quantum size effect was clearly observed through the spectra photoluminescence (PL) shape. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AFM" title="AFM">AFM</a>, <a href="https://publications.waset.org/abstracts/search?q=InAs%20QDs" title=" InAs QDs"> InAs QDs</a>, <a href="https://publications.waset.org/abstracts/search?q=PL" title=" PL"> PL</a>, <a href="https://publications.waset.org/abstracts/search?q=SSMBE" title=" SSMBE"> SSMBE</a> </p> <a href="https://publications.waset.org/abstracts/20670/size-distribution-effect-of-inasinp-self-organized-quantum-dots-on-optical-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20670.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">686</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">183</span> Remote Sensing and GIS for Land Use Change Assessment: Case Study of Oued Bou Hamed Watershed, Southern Tunisia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ouerchefani%20Dalel">Ouerchefani Dalel</a>, <a href="https://publications.waset.org/abstracts/search?q=Mahdhaoui%20Basma"> Mahdhaoui Basma</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Land use change is one of the important factors needed to evaluate later on the impact of human actions on land degradation. This work present the application of a methodology based on remote sensing for evaluation land use change in an arid region of Tunisia. This methodology uses Landsat TM and ETM+ images to produce land use maps by supervised classification based on ground truth region of interests. This study showed that it was possible to rely on radiometric values of the pixels to define each land use class in the field. It was also possible to generate 3 land use classes of the same study area between 1988 and 2011. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=land%20use" title="land use">land use</a>, <a href="https://publications.waset.org/abstracts/search?q=change" title=" change"> change</a>, <a href="https://publications.waset.org/abstracts/search?q=remote%20sensing" title=" remote sensing"> remote sensing</a>, <a href="https://publications.waset.org/abstracts/search?q=GIS" title=" GIS"> GIS</a> </p> <a href="https://publications.waset.org/abstracts/31556/remote-sensing-and-gis-for-land-use-change-assessment-case-study-of-oued-bou-hamed-watershed-southern-tunisia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31556.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">564</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">182</span> Numerical Static and Seismic Evaluation of Pile Group Settlement: A Case Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seyed%20Abolhassan%20Naeini">Seyed Abolhassan Naeini</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Yekehdehghan"> Hamed Yekehdehghan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Shallow foundations cannot be used when the bedding soil is soft. A suitable method for constructing foundations on soft soil is to employ pile groups to transfer the load to the bottom layers. The present research used results from tests carried out in northern Iran (Langarud) and the FLAC3D software to model a pile group for investigating the effects of various parameters on pile cap settlement under static and seismic conditions. According to the results, changes in the strength parameters of the soil, groundwater level, and the length of and distance between the piles affect settlement differently. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=FLACD%203D%20software" title="FLACD 3D software">FLACD 3D software</a>, <a href="https://publications.waset.org/abstracts/search?q=pile%20group" title=" pile group"> pile group</a>, <a href="https://publications.waset.org/abstracts/search?q=settlement" title=" settlement"> settlement</a>, <a href="https://publications.waset.org/abstracts/search?q=soil" title=" soil"> soil</a> </p> <a href="https://publications.waset.org/abstracts/147055/numerical-static-and-seismic-evaluation-of-pile-group-settlement-a-case-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/147055.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">128</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">181</span> Novel Microstrip MIMO Antenna for 3G/4G Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sandro%20Samir%20Nasief">Sandro Samir Nasief</a>, <a href="https://publications.waset.org/abstracts/search?q=Hussein%20Hamed%20Ghouz"> Hussein Hamed Ghouz</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Fathy"> Mohamed Fathy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A compact ultra-wide band micro-strip MIMO antenna is introduced. The antenna consists of two elements each of size 24X24 mm2 (square millimetre) while the total MIMO size is 58X24 mm2 after the spacing between MIMO elements and adding a decouple circuit. The first one covers from 3.29 to 6.9 GHZ using digital ground and the second antenna covers from 8.76 to 13.27 GHZ using defective ground. This type of antenna is used for 3G and 4G applications. The introduction for the antenna structure and the parametric study (reflection coefficients, gain, coupling and decoupling) will be introduced. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=micro-strip%20antenna" title="micro-strip antenna">micro-strip antenna</a>, <a href="https://publications.waset.org/abstracts/search?q=MIMO" title=" MIMO"> MIMO</a>, <a href="https://publications.waset.org/abstracts/search?q=digital%20ground" title=" digital ground"> digital ground</a>, <a href="https://publications.waset.org/abstracts/search?q=defective%20ground" title=" defective ground"> defective ground</a>, <a href="https://publications.waset.org/abstracts/search?q=decouple%20circuit" title=" decouple circuit"> decouple circuit</a>, <a href="https://publications.waset.org/abstracts/search?q=bandwidth" title=" bandwidth"> bandwidth</a> </p> <a href="https://publications.waset.org/abstracts/4377/novel-microstrip-mimo-antenna-for-3g4g-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4377.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">365</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">180</span> Reduced Complexity Iterative Solution For I/Q Imbalance Problem in DVB-T2 Systems </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Karim%20S.%20Hassan">Karim S. Hassan</a>, <a href="https://publications.waset.org/abstracts/search?q=Hisham%20M.%20Hamed"> Hisham M. Hamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Yassmine%20A.%20Fahmy"> Yassmine A. Fahmy</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20F.%20Shalash"> Ahmed F. Shalash</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The mismatch between in-phase and quadrature signals in Orthogonal frequency division multiplexing (OFDM) systems, such as DVB-T2, results in a severe degradation in performance. Several general solutions have been proposed in the past, but these are largely computationally intensive, leading to complex implementations. In this paper, we propose a relatively simple iterative solution, which provides good results in relatively few iterations, using fixed precision arithmetic. An additional advantage is that complex digital blocks, such as dividers and square root, are not required. Thus, the proposed solution may be implemented in relatively simple hardware. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=OFDM" title="OFDM">OFDM</a>, <a href="https://publications.waset.org/abstracts/search?q=DVB-T2" title=" DVB-T2"> DVB-T2</a>, <a href="https://publications.waset.org/abstracts/search?q=I%2FQ%20imbalance" title=" I/Q imbalance"> I/Q imbalance</a>, <a href="https://publications.waset.org/abstracts/search?q=I%2FQ%20mismatch" title=" I/Q mismatch"> I/Q mismatch</a>, <a href="https://publications.waset.org/abstracts/search?q=iterative%20method" title=" iterative method"> iterative method</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20point" title=" fixed point"> fixed point</a>, <a href="https://publications.waset.org/abstracts/search?q=reduced%20complexity" title=" reduced complexity"> reduced complexity</a> </p> <a href="https://publications.waset.org/abstracts/1821/reduced-complexity-iterative-solution-for-iq-imbalance-problem-in-dvb-t2-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1821.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">541</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">179</span> Studying the Impact of Agricultural Producers Support Policy in Export Market</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yazdani%20Saeed">Yazdani Saeed</a>, <a href="https://publications.waset.org/abstracts/search?q=Rafiei%20Hamed"> Rafiei Hamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Nekoofar%20Farahnaz"> Nekoofar Farahnaz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Governments Policies play a major role in national and international Markets. Pistachio is one of the most important non-oil export commodity of Iran. Therefore, in this study the relation between the producer support policies and the export of Pistachio was examined. An econometric model (VAR) was applied to test the study hypothesis. According to the estimated coefficient in VAR model, lag of producer support index has a significant and negative effect on variation of Pistachio’s export in short term. In other word, in short term, export advantage index is dependent on the amount of producers support in previous period. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=producer%20support" title="producer support">producer support</a>, <a href="https://publications.waset.org/abstracts/search?q=export%20advantage" title=" export advantage"> export advantage</a>, <a href="https://publications.waset.org/abstracts/search?q=pistachio" title=" pistachio"> pistachio</a>, <a href="https://publications.waset.org/abstracts/search?q=Iran" title=" Iran"> Iran</a> </p> <a href="https://publications.waset.org/abstracts/182109/studying-the-impact-of-agricultural-producers-support-policy-in-export-market" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182109.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">48</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">178</span> High-Frequency Half Bridge Inverter Applied to Induction Heating</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amira%20Zouaoui">Amira Zouaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Belloumi"> Hamed Belloumi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ferid%20Kourda"> Ferid Kourda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the analysis and design of a DC–AC resonant converter applied to induction heating. The proposed topology based on the series-parallel half-bridge resonant inverter is described. It can operate with Zero-Voltage Switching (ZVS). At the resonant frequency, the secondary current is amplified over the heating coil with small switching angle, which keeps the reactive power low and permits heating with small current through the resonant inductor and the transformer. The operation and control principle of the proposed high frequency inverter is described and verified through simulated and experimental results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=induction%20heating" title="induction heating">induction heating</a>, <a href="https://publications.waset.org/abstracts/search?q=inverter" title=" inverter"> inverter</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20frequency" title=" high frequency"> high frequency</a>, <a href="https://publications.waset.org/abstracts/search?q=resonant" title=" resonant"> resonant</a> </p> <a href="https://publications.waset.org/abstracts/8100/high-frequency-half-bridge-inverter-applied-to-induction-heating" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8100.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">464</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">177</span> Cell Patterns and Tissue Metamorphoses Based on Cell Surface Mechanism</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Reyhane%20Hamed%20Kamran">Reyhane Hamed Kamran</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Early stage morphogenesis requires the execution of complex systems that direct the nearby conduct of gatherings of cells. The organization of such instruments has been, for the most part, deciphered through the recognizable proof of moderated groups of flagging pathways that spatially and transiently control cell conduct. In any case, how this data is handled to control cell shape and cell elements is an open territory of examination. The structure that rises up out of differing controls, for example, cell science, material science, and formative science, focuses to bond and cortical actin arranges as controllers of cell surface mechanics. In this specific circumstance, a scope of formative marvels can be clarified by the guideline of cell surface pressure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cell" title="cell">cell</a>, <a href="https://publications.waset.org/abstracts/search?q=tissue%20damage" title=" tissue damage"> tissue damage</a>, <a href="https://publications.waset.org/abstracts/search?q=morphogenesis" title=" morphogenesis"> morphogenesis</a>, <a href="https://publications.waset.org/abstracts/search?q=cell%20conduct" title=" cell conduct"> cell conduct</a> </p> <a href="https://publications.waset.org/abstracts/154753/cell-patterns-and-tissue-metamorphoses-based-on-cell-surface-mechanism" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154753.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">105</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">176</span> Effects of Molybdenum on Phosphorus Concentration in Rice (Oryza sativa L.)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Zakikhani">Hamed Zakikhani</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohd%20Khanif%20Yusop"> Mohd Khanif Yusop</a>, <a href="https://publications.waset.org/abstracts/search?q=Amin%20Soltangheisi"> Amin Soltangheisi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A hydroponic trial was carried out to investigate the effect of molybdenum (Mo) on uptake of phosphorus (P) in different rice cultivars. The experiment was conducted using a randomized complete-block design, with a split-plot arrangement of treatments and three replications. Four rates of Mo (0, 0.01, 0.1 and 1 mg L−1) and five cultivars (MR219, HASHEMI, MR232, FAJRE and MR253) provided the main and sub-plots, respectively. Interaction of molybdenum×variety was significant on shoot phosphorus uptake (p≤0.01). Highest and lowest shoot phosphorus uptake were seen in Mo3V3 (0.6% plant-1) and Mo0V3 (0.14% plant-1) treatments, respectively. Molybdenum did not have a significant effect on root phosphorus content. According to results, application of molybdenum has a synergistic effect on uptake of phosphorus by rice plants. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=molybdenum" title="molybdenum">molybdenum</a>, <a href="https://publications.waset.org/abstracts/search?q=phosphorus" title=" phosphorus"> phosphorus</a>, <a href="https://publications.waset.org/abstracts/search?q=uptake" title=" uptake"> uptake</a>, <a href="https://publications.waset.org/abstracts/search?q=rice" title=" rice"> rice</a>, <a href="https://publications.waset.org/abstracts/search?q=" title=" "> </a> </p> <a href="https://publications.waset.org/abstracts/5240/effects-of-molybdenum-on-phosphorus-concentration-in-rice-oryza-sativa-l" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5240.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">434</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">175</span> Intelligent IT Infrastructure in the Gas and Oil Industry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20Fahad%20Alotaibi">Ahmad Fahad Alotaibi</a>, <a href="https://publications.waset.org/abstracts/search?q=Khalid%20Hamed%20Hajri"> Khalid Hamed Hajri</a>, <a href="https://publications.waset.org/abstracts/search?q=Humoud%20Hudiban%20Rashidi"> Humoud Hudiban Rashidi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Intelligent information technology infrastructure is considered one of the enablers to enhance digital transformation in the gas and oil fields to optimize IT infrastructure reliability by supporting operations and maintenance in a safe and secure method to optimize resources. Smart IT buildings, communication rooms and shelters with intelligent technologies can strengthen the performance and profitability of gas and oil companies by ensuring business continuity. This paper describes the advantages of deploying intelligent IT infrastructure in the oil and gas industry by illustrating its positive impacts on some development aspects, for instance, operations, maintenance, safety, security and resource optimization. Moreover, it highlights the challenges and difficulties of providing smart IT services in a remote area and proposes solutions to overcome such difficulties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=intelligent%20IT%20infrastructure" title="intelligent IT infrastructure">intelligent IT infrastructure</a>, <a href="https://publications.waset.org/abstracts/search?q=remote%20areas" title=" remote areas"> remote areas</a>, <a href="https://publications.waset.org/abstracts/search?q=oil%20and%20gas%20field" title=" oil and gas field"> oil and gas field</a>, <a href="https://publications.waset.org/abstracts/search?q=digitalization" title=" digitalization"> digitalization</a> </p> <a href="https://publications.waset.org/abstracts/184215/intelligent-it-infrastructure-in-the-gas-and-oil-industry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/184215.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">60</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">174</span> A High Quality Factor Filter Based on Quasi- Periodic Photonic Structure</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Alipour-Banaei">Hamed Alipour-Banaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Farhad%20Mehdizadeh"> Farhad Mehdizadeh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We report the design and characterization of ultra high quality factor filter based on one-dimensional photonic-crystal Thue-Morse sequence structure. The behavior of aperiodic array of photonic crystal structure is numerically investigated and we show that by changing the angle of incident wave, desired wavelengths could be tuned and a tunable filter is realized. Also it is shown that high quality factor filter be achieved in the telecommunication window around 1550 nm, with a device based on Thue-Morse structure. Simulation results show that the proposed structure has a quality factor more than 100000 and it is suitable for DWDM communication applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thue-Morse" title="Thue-Morse">Thue-Morse</a>, <a href="https://publications.waset.org/abstracts/search?q=filter" title=" filter"> filter</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20factor" title=" quality factor"> quality factor</a>, <a href="https://publications.waset.org/abstracts/search?q=photonic" title=" photonic"> photonic</a> </p> <a href="https://publications.waset.org/abstracts/31621/a-high-quality-factor-filter-based-on-quasi-periodic-photonic-structure" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31621.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">572</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">173</span> Technical and Legal Definitions in Cyber Terrorism</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pardis%20Moslemzadeh%20Tehrani">Pardis Moslemzadeh Tehrani</a>, <a href="https://publications.waset.org/abstracts/search?q=Nazura%20Abdul%20Manap"> Nazura Abdul Manap</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Ladoni%20Damghani"> Hamed Ladoni Damghani</a>, <a href="https://publications.waset.org/abstracts/search?q=Rohimi%20Bin%20Shapiee"> Rohimi Bin Shapiee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years the speed of new technology has brought forth so many new issues. Cyberspace is among the new technologies that need novel ways to address the various issues that have arisen. While cyberspace is a technical notion that defies a single definition, this new technology requires the adoption and application of new laws. In order to manage issues arising from the existence of cyberspace, proper policies and definitions must be formulated which satisfy both technical and legal aspects. One difficulty in this regard is due to the unique features of cyberspace architecture. This article proposes to define cyberspace and cyber terrorism. This will allow for a more effective and comprehensive addressing of legal issues as they can then be handled better by introducing a new factor to the otherwise ordinary analysis in whichever field is implicated such as the nature and place of use. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cyberspace" title="cyberspace">cyberspace</a>, <a href="https://publications.waset.org/abstracts/search?q=cyber%20terrorism" title=" cyber terrorism"> cyber terrorism</a>, <a href="https://publications.waset.org/abstracts/search?q=technical%20definition" title=" technical definition"> technical definition</a>, <a href="https://publications.waset.org/abstracts/search?q=legal%20definition" title=" legal definition"> legal definition</a> </p> <a href="https://publications.waset.org/abstracts/24928/technical-and-legal-definitions-in-cyber-terrorism" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24928.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">589</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">172</span> Development of a Force-Sensing Toothbrush for Gum Recession Measurement Using Programmable Automation Controller</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sorayya%20Kazemi">Sorayya Kazemi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Kharrati"> Hamed Kharrati</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Abedinpour%20Fallah"> Mehdi Abedinpour Fallah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the design and implementation of a novel electric pressure-sensitive toothbrush, capable of measuring the forces applied to the head of the brush. The developed device is used for gum recession measurement. In particular, the percentage of gum recession is measured by a Programmable Automation controller (PAC). Moreover, the brushing forces are measured by a Force Sensing Resistor (FSR) sensor. These forces are analog inputs of PAC. According to the applied forces during patient’s brushing and the patient’s percentage of gum recession, dentist sets the standard force range. The instrument alarms when the patient applies a force over the set range. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gum%20recession" title="gum recession">gum recession</a>, <a href="https://publications.waset.org/abstracts/search?q=force%20sensing%20resistor" title=" force sensing resistor"> force sensing resistor</a>, <a href="https://publications.waset.org/abstracts/search?q=controller" title=" controller"> controller</a>, <a href="https://publications.waset.org/abstracts/search?q=toothbrush" title=" toothbrush"> toothbrush</a> </p> <a href="https://publications.waset.org/abstracts/30211/development-of-a-force-sensing-toothbrush-for-gum-recession-measurement-using-programmable-automation-controller" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30211.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">497</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">171</span> Photocatalytic Degradation of Produced Water Hydrocarbon of an Oil Field by Using Ag-Doped TiO₂ Nanoparticles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Bazrafshan">Hamed Bazrafshan</a>, <a href="https://publications.waset.org/abstracts/search?q=Saeideh%20Dabirnia"> Saeideh Dabirnia</a>, <a href="https://publications.waset.org/abstracts/search?q=Zahra%20Alipour%20Tesieh"> Zahra Alipour Tesieh</a>, <a href="https://publications.waset.org/abstracts/search?q=Samaneh%20Alavi"> Samaneh Alavi</a>, <a href="https://publications.waset.org/abstracts/search?q=Bahram%20Dabir"> Bahram Dabir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the removal of pollutants of a real produced water sample from an oil reservoir (a light oil reservoir), using a photocatalytic degradation process in a cylindrical glass reactor, was investigated. Using TiO₂ and Ag-TiO₂ in slurry form, the photocatalytic degradation was studied by measuring the COD parameter, qualitative analysis, and GC-MS. At first, optimization of the parameters on photocatalytic degradation of hydrocarbon pollutants in real produced water, using TiO₂ nanoparticles as photocatalysts under UV light, was carried out applying response surface methodology. The results of the design of the experiment showed that the optimum conditions were at a catalyst concentration of 1.14 g/lit and pH of 2.67, and the percentage of COD removal was 72.65%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photocatalyst" title="photocatalyst">photocatalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=Ag-doped" title=" Ag-doped"> Ag-doped</a>, <a href="https://publications.waset.org/abstracts/search?q=TiO%E2%82%82" title=" TiO₂"> TiO₂</a>, <a href="https://publications.waset.org/abstracts/search?q=produced%20water" title=" produced water"> produced water</a>, <a href="https://publications.waset.org/abstracts/search?q=nanoparticles" title=" nanoparticles"> nanoparticles</a> </p> <a href="https://publications.waset.org/abstracts/149150/photocatalytic-degradation-of-produced-water-hydrocarbon-of-an-oil-field-by-using-ag-doped-tio2-nanoparticles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/149150.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">130</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">170</span> Limits and Barriers of Value Creation and Projects Development: The Case of Tunisian SMEs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samira%20Boussema">Samira Boussema</a>, <a href="https://publications.waset.org/abstracts/search?q=Ben%20Hamed%20Salah"> Ben Hamed Salah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Entrepreneurship was always considered to be the most appropriate remedy for various economies’ symptoms. It is presented as a complex process that faces several barriers thereby inhibiting a project’s implementation phase. In fact, after a careful review of the literature, we noticed that empirical researches on reasons behind non-developing entrepreneurial projects are very rare, suggesting a lack in modeling the process in general and the pre-start phase in particular. Therefore, in this study we try to identify the main environmental barriers to developing business projects in Tunisia through the study of a representative sample of undeveloped projects. To this end, we used a quantitative approach which allowed us to examine the various barriers encountered by young entrepreneurs during their projects’ implementation. Indeed, by modeling the phenomenon we found that these managers face barriers of legal, financial, educational and government support dimensions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=entrepreneurship" title="entrepreneurship">entrepreneurship</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20barriers" title=" environmental barriers"> environmental barriers</a>, <a href="https://publications.waset.org/abstracts/search?q=non-implementation%20of%20projects" title=" non-implementation of projects"> non-implementation of projects</a>, <a href="https://publications.waset.org/abstracts/search?q=structural%20modeling" title=" structural modeling"> structural modeling</a> </p> <a href="https://publications.waset.org/abstracts/40428/limits-and-barriers-of-value-creation-and-projects-development-the-case-of-tunisian-smes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40428.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">169</span> Presenting a Model Based on Artificial Neural Networks to Predict the Execution Time of Design Projects</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Zolfaghari">Hamed Zolfaghari</a>, <a href="https://publications.waset.org/abstracts/search?q=Mojtaba%20Kord"> Mojtaba Kord</a> </p> <p class="card-text"><strong>Abstract:</strong></p> After feasibility study the design phase is started and the rest of other phases are highly dependent on this phase. forecasting the duration of design phase could do a miracle and would save a lot of time. This study provides a fast and accurate Machine learning (ML) and optimization framework, which allows a quick duration estimation of project design phase, hence improving operational efficiency and competitiveness of a design construction company. 3 data sets of three years composed of daily time spent for different design projects are used to train and validate the ML models to perform multiple projects. Our study concluded that Artificial Neural Network (ANN) performed an accuracy of 0.94. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=time%20estimation" title="time estimation">time estimation</a>, <a href="https://publications.waset.org/abstracts/search?q=machine%20learning" title=" machine learning"> machine learning</a>, <a href="https://publications.waset.org/abstracts/search?q=Artificial%20neural%20network" title=" Artificial neural network"> Artificial neural network</a>, <a href="https://publications.waset.org/abstracts/search?q=project%20design%20phase" title=" project design phase"> project design phase</a> </p> <a href="https://publications.waset.org/abstracts/173064/presenting-a-model-based-on-artificial-neural-networks-to-predict-the-execution-time-of-design-projects" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/173064.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">97</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">168</span> Investigation of Solvent Effect on Viscosity of Lubricant in Disposable Medical Devices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Bagheri">Hamed Bagheri</a>, <a href="https://publications.waset.org/abstracts/search?q=Seyd%20Javid%20Shariati"> Seyd Javid Shariati</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effects of type and amount of solvent on lubricant which is used in disposable medical devices are investigated in this article. Two kinds of common solvent, n-Hexane and n-Heptane, are used. The mechanical behavior of syringe has shown that n-Heptane has better mixing ratio and also more effective spray process in the barrel of syringe than n-Hexane because of similar solubility parameter to silicon oil. The results revealed that movement of plunger in the barrel increases when pure silicone is used because non-uniform film is created on the surface of barrel, and also, it seems that the form of silicon is converted from oil to gel due to sterilization process. The results showed that the convenient mixing ratio of solvent/lubricant oil is 80/20. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=disposal%20medical%20devices" title="disposal medical devices">disposal medical devices</a>, <a href="https://publications.waset.org/abstracts/search?q=lubricant%20oil" title=" lubricant oil"> lubricant oil</a>, <a href="https://publications.waset.org/abstracts/search?q=solvent%20effect" title=" solvent effect"> solvent effect</a>, <a href="https://publications.waset.org/abstracts/search?q=solubility%20parameter" title=" solubility parameter"> solubility parameter</a> </p> <a href="https://publications.waset.org/abstracts/72192/investigation-of-solvent-effect-on-viscosity-of-lubricant-in-disposable-medical-devices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72192.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">231</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">167</span> Cholinesterase Inhibitory Indole Alkaloids from the Bark of Rauvolfia reflexa</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mehran%20Fadaeinasab">Mehran Fadaeinasab</a>, <a href="https://publications.waset.org/abstracts/search?q=Alireza%20Basiri"> Alireza Basiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Yalda%20Kia"> Yalda Kia</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Karimian"> Hamed Karimian</a>, <a href="https://publications.waset.org/abstracts/search?q=Hapipah%20Mohd%20Ali"> Hapipah Mohd Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Vikneswaran%20Murugaiyah"> Vikneswaran Murugaiyah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Two new, rauvolfine C and 3- methyl-10,11-dimethoxyl-6- methoxycarbonyl- β- carboline, along with five known indole alkaloids, macusine B, vinorine, undulifoline, isoresrpiline and rescinnamine were isolated from the bark of Rauvolfia reflexa. All the compounds showed good to moderate cholinesterase inhibitory activity with IC50 values in the range of 8.06 to 73.23 πM, except rauvolfine C that was inactive against acetylcholinesterase (AChE). Rescinnamine, a dual inhibitor was found to be the most potent inhibitor among the isolated alkaloids against both AChE and butyrylcholinesterase (BChE). Molecular docking revealed that rescinnamine interacted differently on AChE and BChE, by means of hydrophobic interactions and hydrogen bonding. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rauvolfia%20reflexa" title="Rauvolfia reflexa">Rauvolfia reflexa</a>, <a href="https://publications.waset.org/abstracts/search?q=indole%20alkaloids" title=" indole alkaloids"> indole alkaloids</a>, <a href="https://publications.waset.org/abstracts/search?q=acetylcholinesterase" title=" acetylcholinesterase"> acetylcholinesterase</a>, <a href="https://publications.waset.org/abstracts/search?q=butyrylcholinesterase" title=" butyrylcholinesterase"> butyrylcholinesterase</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20docking" title=" molecular docking"> molecular docking</a> </p> <a href="https://publications.waset.org/abstracts/30034/cholinesterase-inhibitory-indole-alkaloids-from-the-bark-of-rauvolfia-reflexa" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30034.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">592</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Nadim%20Hamed&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Nadim%20Hamed&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Nadim%20Hamed&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Nadim%20Hamed&page=5">5</a></li> <li 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