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Veisi</title> <meta name="description" content="Search results for: Afshin Veisi"> <meta name="keywords" content="Afshin Veisi"> <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 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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="Afshin Veisi"> <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: Afshin Veisi</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> Investigation of Changes of Physical Properties of the Poplar Wood in Radial and Longitudinal Axis at Chaaloos Zone</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Veisi">Afshin Veisi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the physical properties of wood in poplar wood (Populous sp.) were analyzed in longitudinal and radial directions of the stem. Three Populous Alba tree were cut in chaloos zone and from each tree, 3 discs were selected at 130cm, half of tree and under of crown. The test samples from pith to bark (heartwood to sapwood) were prepared from these discs for measuring the involved properties such as, wet, dry and critical specific gravity, porosity, volume shrinkage and swelling based on the ASTM standard, and data in two radial and longitudinal directions in the trank were statistically analyzed. Such as, variations of wet, dry and critical specific gravity had in radial direction respectively: irregular increase, increase and increase, and in longitudinal direction respectively: irregular decrease, irregular increase and increase. Results of variations to moisture content and porosity show that in radial direction respectively: irregular increasing and decreasing, and in longitudinal direction from down to up respectively: irregular decreasing and stability. Volume shrinkage and swelling variations show in radial direction irregular and in longitudinal axial regular decreasing. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=poplar%20wood" title="poplar wood">poplar wood</a>, <a href="https://publications.waset.org/abstracts/search?q=physical%20properties" title=" physical properties"> physical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=shrinkage" title=" shrinkage"> shrinkage</a>, <a href="https://publications.waset.org/abstracts/search?q=swelling" title=" swelling"> swelling</a>, <a href="https://publications.waset.org/abstracts/search?q=critical%20specific%20gravity" title=" critical specific gravity"> critical specific gravity</a>, <a href="https://publications.waset.org/abstracts/search?q=wet%20specific%20gravity" title=" wet specific gravity"> wet specific gravity</a>, <a href="https://publications.waset.org/abstracts/search?q=dry%20specific%20gravity" title=" dry specific gravity"> dry specific gravity</a> </p> <a href="https://publications.waset.org/abstracts/49391/investigation-of-changes-of-physical-properties-of-the-poplar-wood-in-radial-and-longitudinal-axis-at-chaaloos-zone" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49391.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">277</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">52</span> Study of Relation between Corporate Governance Mechanism and Investment Decisions Made by Companies Listed in Tehran Stock Exchange- IRAN</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Roohollah%20Jamshidpour">Roohollah Jamshidpour</a>, <a href="https://publications.waset.org/abstracts/search?q=Elaheh%20Ahmadi"> Elaheh Ahmadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Farhad%20Shah%20Veisi"> Farhad Shah Veisi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Present research seeks to answer this question: Is there any relationship between corporate governance mechanisms and decision on corporate investments? Percentages of institutional, board of director’s, and stockholder’s ownership are among internal mechanisms of corporate governance relationship of which with investment-based decisions are studied by this research. Information on 103 companies during 1388 (2009)- 1393 (2014). Initially, research variables are identified; next, Rah Avard-e Novin software is used to gather Information. SPSS software is employed to test hypotheses with respect to descriptive and inferential statistics like correlation analysis. Research results show that percentage of institutional stockholders’ ownership has a significant direct relationship with investment decisions. For other cases, no significant relationship is observed between corporate governance mechanisms and investment decisions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=corporate%20governance" title="corporate governance">corporate governance</a>, <a href="https://publications.waset.org/abstracts/search?q=company%20size" title=" company size"> company size</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20floating%20stock" title=" free floating stock"> free floating stock</a>, <a href="https://publications.waset.org/abstracts/search?q=institutional%20investors" title=" institutional investors"> institutional investors</a>, <a href="https://publications.waset.org/abstracts/search?q=major%20shareholders" title=" major shareholders"> major shareholders</a> </p> <a href="https://publications.waset.org/abstracts/54370/study-of-relation-between-corporate-governance-mechanism-and-investment-decisions-made-by-companies-listed-in-tehran-stock-exchange-iran" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54370.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">295</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> Prediction of Vapor Liquid Equilibrium for Dilute Solutions of Components in Ionic Liquid by Neural Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Mousavian">S. Mousavian</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Abedianpour"> A. Abedianpour</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Khanmohammadi"> A. Khanmohammadi</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Hematian"> S. Hematian</a>, <a href="https://publications.waset.org/abstracts/search?q=Gh.%20Eidi%20Veisi"> Gh. Eidi Veisi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ionic liquids are finding a wide range of applications from reaction media to separations and materials processing. In these applications, Vapor–Liquid equilibrium (VLE) is the most important one. VLE for six systems at 353 K and activity coefficients at infinite dilution 〖(γ〗_i^∞) for various solutes (alkanes, alkenes, cycloalkanes, cycloalkenes, aromatics, alcohols, ketones, esters, ethers, and water) in the ionic liquids (1-ethyl-3-methylimidazolium bis (trifluoromethylsulfonyl)imide [EMIM][BTI], 1-hexyl-3-methyl imidazolium bis (trifluoromethylsulfonyl) imide [HMIM][BTI], 1-octyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide [OMIM][BTI], and 1-butyl-1-methylpyrrolidinium bis (trifluoromethylsulfonyl) imide [BMPYR][BTI]) have been used to train neural networks in the temperature range from (303 to 333) K. Densities of the ionic liquids, Hildebrant constant of substances, and temperature were selected as input of neural networks. The networks with different hidden layers were examined. Networks with seven neurons in one hidden layer have minimum error and good agreement with experimental data. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ionic%20liquid" title="ionic liquid">ionic liquid</a>, <a href="https://publications.waset.org/abstracts/search?q=neural%20networks" title=" neural networks"> neural networks</a>, <a href="https://publications.waset.org/abstracts/search?q=VLE" title=" VLE"> VLE</a>, <a href="https://publications.waset.org/abstracts/search?q=dilute%20solution" title=" dilute solution"> dilute solution</a> </p> <a href="https://publications.waset.org/abstracts/42919/prediction-of-vapor-liquid-equilibrium-for-dilute-solutions-of-components-in-ionic-liquid-by-neural-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42919.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">300</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> Comparison of Pbs/Zns Quantum Dots Synthesis Methods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahbobeh%20Bozhmehrani">Mahbobeh Bozhmehrani</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Farah%20Bakhsh"> Afshin Farah Bakhsh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nanoparticles with PbS core of 12 nm and shell of approximately 3 nm were synthesized at PbS:ZnS ratios of 1.01:0.1 using Merca Ptopropionic Acid as stabilizing agent. PbS/ZnS nanoparticles present a dramatically increase of Photoluminescence intensity, confirming the confinement of the PbS core by increasing the Quantum Yield from 0.63 to 0.92 by the addition of the ZnS shell. In this case, the synthesis by microwave method allows obtaining nanoparticles with enhanced optical characteristics than those of nanoparticles synthesized by colloidal method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pbs%2FZns" title="Pbs/Zns">Pbs/Zns</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20dots" title=" quantum dots"> quantum dots</a>, <a href="https://publications.waset.org/abstracts/search?q=colloidal%20method" title=" colloidal method"> colloidal method</a>, <a href="https://publications.waset.org/abstracts/search?q=microwave" title=" microwave"> microwave</a> </p> <a href="https://publications.waset.org/abstracts/47653/comparison-of-pbszns-quantum-dots-synthesis-methods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47653.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">286</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> Modification of Underwood's Equation to Calculate Minimum Reflux Ratio for Column with One Side Stream Upper Than Feed</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Mousavian">S. Mousavian</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Abedianpour"> A. Abedianpour</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Khanmohammadi"> A. Khanmohammadi</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Hematian"> S. Hematian</a>, <a href="https://publications.waset.org/abstracts/search?q=Gh.%20Eidi%20Veisi"> Gh. Eidi Veisi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Distillation is one of the most important and utilized separation methods in the industrial practice. There are different ways to design of distillation column. One of these ways is short cut method. In short cut method, material balance and equilibrium are employed to calculate number of tray in distillation column. There are different methods that are classified in short cut method. One of these methods is Fenske-Underwood-Gilliland method. In this method, minimum reflux ratio should be calculated by underwood equation. Underwood proposed an equation that is useful for simple distillation column with one feed and one top and bottom product. In this study, underwood method is developed to predict minimum reflux ratio for column with one side stream upper than feed. The result of this model compared with McCabe-Thiele method. The result shows that proposed method able to calculate minimum reflux ratio with very small error. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=minimum%20reflux%20ratio" title="minimum reflux ratio">minimum reflux ratio</a>, <a href="https://publications.waset.org/abstracts/search?q=side%20stream" title=" side stream"> side stream</a>, <a href="https://publications.waset.org/abstracts/search?q=distillation" title=" distillation"> distillation</a>, <a href="https://publications.waset.org/abstracts/search?q=Underwood%E2%80%99s%20method" title=" Underwood’s method"> Underwood’s method</a> </p> <a href="https://publications.waset.org/abstracts/33541/modification-of-underwoods-equation-to-calculate-minimum-reflux-ratio-for-column-with-one-side-stream-upper-than-feed" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33541.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">406</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> Different Methods of Fe3O4 Nano Particles Synthesis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arezoo%20Hakimi">Arezoo Hakimi</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Farahbakhsh"> Afshin Farahbakhsh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Herein, we comparison synthesized Fe3O4 using, hydrothermal method, Mechanochemical processes and solvent thermal method. The Hydrothermal Technique has been the most popular one, gathering interest from scientists and technologists of different disciplines, particularly in the last fifteen years. In the hydrothermal method Fe3O4 microspheres, in which many nearly monodisperse spherical particles with diameters of about 400nm, in the mechanochemical method regular morphology indicates that the particles are well crystallized and in the solvent thermal method Fe3O4 nanoparticles have good properties of uniform size and good dispersion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fe3O4%20nanoparticles" title="Fe3O4 nanoparticles">Fe3O4 nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrothermal%20method" title=" hydrothermal method"> hydrothermal method</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanochemical%20processes" title=" mechanochemical processes"> mechanochemical processes</a>, <a href="https://publications.waset.org/abstracts/search?q=solvent%20thermal%20method" title=" solvent thermal method"> solvent thermal method</a> </p> <a href="https://publications.waset.org/abstracts/46580/different-methods-of-fe3o4-nano-particles-synthesis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46580.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">351</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> Service-Based Application Adaptation Strategies: A Survey</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sahba%20Paktinat">Sahba Paktinat</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Salajeghe"> Afshin Salajeghe</a>, <a href="https://publications.waset.org/abstracts/search?q=Mir%20Ali%20Seyyedi"> Mir Ali Seyyedi</a>, <a href="https://publications.waset.org/abstracts/search?q=Yousef%20Rastegari"> Yousef Rastegari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Service Oriented Architecture (SOA) allows modeling of dynamic interaction between incongruous providers, which enables governing the development of complex applications. However, implementation of SOA comes with some challenges, including its adaptability and robustness. Dynamism is inherent to the nature of service-based applications and of their running environment. These factors lead to necessity for dynamic adaptation. In this paper, we try to describe basics and main structure of SOA adaptation process with a conceptual view to this issue. In this survey, we will review the relevant adaptation approaches. This paper allows studying how different approaches deal with service oriented architecture adaptation life-cycle and provides basic guidelines for their analysis, evaluation and comparison. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=context-aware" title="context-aware">context-aware</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20adaptation" title=" dynamic adaptation"> dynamic adaptation</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20of%20services" title=" quality of services"> quality of services</a>, <a href="https://publications.waset.org/abstracts/search?q=service%20oriented%20architecture" title=" service oriented architecture"> service oriented architecture</a>, <a href="https://publications.waset.org/abstracts/search?q=service%20based%20application" title=" service based application"> service based application</a> </p> <a href="https://publications.waset.org/abstracts/7201/service-based-application-adaptation-strategies-a-survey" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7201.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">455</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> Using Submerge Fermentation Method to Production of Extracellular Lipase by Aspergillus niger</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Masoumeh%20Ghasemi">Masoumeh Ghasemi</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Farahbakhsh"> Afshin Farahbakhsh</a>, <a href="https://publications.waset.org/abstracts/search?q=Arman%20Farahbakhsh"> Arman Farahbakhsh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Asghar%20Safari"> Ali Asghar Safari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, lipase production has been investigated using submerge fermentation by Aspergillus niger in Kilka fish oil as main substrate. The Taguchi method with an L9 orthogonal array design was used to investigate the effect of parameters and their levels on lipase productivity. The optimum conditions for Kilka fish oil concentration, incubation temperature and pH were obtained 3 gr./ml 35°C and 7, respectively. The amount of lipase activity in optimum condition was obtained 4.59IU/ml. By comparing this amount with the amount of productivity in the olive oil medium based on the cost of each medium, it was that using Kilka fish oil is 84% economical. Therefore Kilka fish oil can be used as an economical and suitable substrate in the lipase production and industrial usages. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=lipase" title="lipase">lipase</a>, <a href="https://publications.waset.org/abstracts/search?q=Aspergillus%20niger" title=" Aspergillus niger"> Aspergillus niger</a>, <a href="https://publications.waset.org/abstracts/search?q=Kilka%20fish%20oil" title=" Kilka fish oil"> Kilka fish oil</a>, <a href="https://publications.waset.org/abstracts/search?q=submerge%20fermentation%20method" title=" submerge fermentation method "> submerge fermentation method </a> </p> <a href="https://publications.waset.org/abstracts/9065/using-submerge-fermentation-method-to-production-of-extracellular-lipase-by-aspergillus-niger" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9065.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">447</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> Effects of Coastal Structure Construction on Ecosystem</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Jahangirzadeh">Afshin Jahangirzadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Shatirah%20Akib"> Shatirah Akib</a>, <a href="https://publications.waset.org/abstracts/search?q=Keyvan%20Kimiaei"> Keyvan Kimiaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Hossein%20Basser"> Hossein Basser</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Coastal defense structures were built to protect part of shore from beach erosion and flooding by sea water. Effects of coastal defense structures can be negative or positive. Some of the effects are beneficial in socioeconomic aspect, but environment matters should be given more concerns because it can bring bad consequences to the earth landscape and make the ecosystem be unbalanced. This study concerns on the negative impacts as they are dominant. Coastal structures can extremely impact the shoreline configuration. Artificial structures can influence sediment transport, split the coastal space, etc. This can result in habitats loss and lead to noise and visual disturbance of birds. There are two types of coastal defense structures, hard coastal structure and soft coastal structure. Both coastal structures have their own impacts. The impacts are induced during the construction, maintaining, and operation of the structures. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ecosystem" title="ecosystem">ecosystem</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20impact" title=" environmental impact"> environmental impact</a>, <a href="https://publications.waset.org/abstracts/search?q=hard%20coastal%20structures" title=" hard coastal structures"> hard coastal structures</a>, <a href="https://publications.waset.org/abstracts/search?q=soft%20coastal%20structures" title=" soft coastal structures"> soft coastal structures</a> </p> <a href="https://publications.waset.org/abstracts/9173/effects-of-coastal-structure-construction-on-ecosystem" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9173.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">485</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">44</span> Gas-Liquid Two Phase Flow Phenomenon in Near Horizontal Upward and Downward Inclined Pipe Orientations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Afshin%20J.%20Ghajar">Afshin J. Ghajar</a>, <a href="https://publications.waset.org/abstracts/search?q=Swanand%20M.%20Bhagwat"> Swanand M. Bhagwat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main purpose of this work is to experimentally investigate the effect of pipe orientation on two phase flow phenomenon. Flow pattern, void fraction and two phase pressure drop is measured in a polycarbonate pipe with an inside diameter of 12.7mm for inclination angles ranging from -20° to +20° using air-water fluid combination. The experimental data covers all flow patterns and the entire range of void fraction typically observed in two phase flow. The effect of pipe orientation on void fraction and two phase pressure drop is justified with reference to the change in flow structure and two phase flow behavior. In addition to this, the top performing void fraction and two phase pressure drop correlations available in the literature are presented and their performance is assessed against the experimental data in the present study and that available in the literature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=flow%20patterns" title="flow patterns">flow patterns</a>, <a href="https://publications.waset.org/abstracts/search?q=inclined%20two%20phase%20flow" title=" inclined two phase flow"> inclined two phase flow</a>, <a href="https://publications.waset.org/abstracts/search?q=pressure%20drop" title=" pressure drop"> pressure drop</a>, <a href="https://publications.waset.org/abstracts/search?q=void%20fraction" title=" void fraction "> void fraction </a> </p> <a href="https://publications.waset.org/abstracts/6215/gas-liquid-two-phase-flow-phenomenon-in-near-horizontal-upward-and-downward-inclined-pipe-orientations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6215.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">681</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> Different Methods of Producing Bioemulsifier by Bacillus licheniformis Strains</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Saba%20Pajuhan">Saba Pajuhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Farahbakhsh"> Afshin Farahbakhsh</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20M.%20M.%20Dastgheib"> S. M. M. Dastgheib</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Biosurfactants and bioemulsifiers are a structurally diverse group of surface-active molecules synthesized by microorganisms, they are amphipathic molecules which reduce surface and interfacial tensions and widely used in pharmaceutical, cosmetic, food and petroleum industries. In this paper, several methods of bioemulsifer synthesis and purification by Bacillus licheniformis strains (namely ACO1, PTCC 1595 and ACO4) were investigated. Strains were grown in nutrient broth with different conditions in order to get maximum production of bioemulsifer. The purification of bio emulsifier and the quality evaluation of the product was done by adding sulfuric acid (H₂SO₄) (98%), Ethanol or HCl to the solution followed by centrifuging. To determine the optimal conditions yielding the highest bioemulsifier production, the effect of various carbon and nitrogen sources, temperature, NaCl concentration, pH, O₂ levels, incubation time are indispensable and all of them were highly effective in bioemulsifiers production. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biosurfactant" title="biosurfactant">biosurfactant</a>, <a href="https://publications.waset.org/abstracts/search?q=bioemulsifier" title=" bioemulsifier"> bioemulsifier</a>, <a href="https://publications.waset.org/abstracts/search?q=purification" title=" purification"> purification</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20tension" title=" surface tension"> surface tension</a>, <a href="https://publications.waset.org/abstracts/search?q=interfacial%20tension" title=" interfacial tension"> interfacial tension</a> </p> <a href="https://publications.waset.org/abstracts/49047/different-methods-of-producing-bioemulsifier-by-bacillus-licheniformis-strains" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49047.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">271</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> Effect of Ginger, Red Pepper, and Their Mixture in Diet on Growth Performance and Body Composition of Oscar, Astronotus ocellatus</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarah%20Jorjani">Sarah Jorjani</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Ghelichi"> Afshin Ghelichi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mazyar%20Kamali"> Mazyar Kamali</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this study was to estimate the effect of addition of ginger and red pepper and their mixture in diet on growth performance, survival rate and body composition of Astronotus ocellatus (Oscar fish). This study had been carried out for 8 weeks. For this reason 132 oscar fishes with intial weight of 2.44±0.26 (gr) were divided into 4 treatments with three replicate as compeletly randomize design test and fed by 100% Biomar diet (T1), Biomar + red pepper (55 mg/kg) (T2), Biomar + ginger (1%) (T3) and Biomar + mixture of red pepper and ginger (T4).The fish were fed in 5% of their body weight. The results showed T2 have significant differences in most of growth parameters in compare with other treatments, such as PBWI, SGR, PER and SR (P < 0.05), but there were no significant differences between treatments in FCR and FE (P > 0.05). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=red%20pepper" title="red pepper">red pepper</a>, <a href="https://publications.waset.org/abstracts/search?q=ginger" title=" ginger"> ginger</a>, <a href="https://publications.waset.org/abstracts/search?q=oscar%20fish" title=" oscar fish"> oscar fish</a>, <a href="https://publications.waset.org/abstracts/search?q=growth%20performance" title=" growth performance"> growth performance</a>, <a href="https://publications.waset.org/abstracts/search?q=body%20composition" title=" body composition"> body composition</a> </p> <a href="https://publications.waset.org/abstracts/37622/effect-of-ginger-red-pepper-and-their-mixture-in-diet-on-growth-performance-and-body-composition-of-oscar-astronotus-ocellatus" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37622.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">422</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> An Investigation into the Interaction of Concrete Frames and Infilled Masonry Walls with Emphasis on the Connections</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamid%20Fazlollahi">Hamid Fazlollahi</a>, <a href="https://publications.waset.org/abstracts/search?q=Behzad%20Rafezy"> Behzad Rafezy</a>, <a href="https://publications.waset.org/abstracts/search?q=Hassan%20Afshin"> Hassan Afshin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There masonry infill increases the stiffness of reinforced concrete frames, thus increasing the force of the earthquake also the interaction between the frame and infill, which can have devastating effects on structures. In contrast presence of infill to increase the structural strength and stability. What is seen in the construction and design of structures has largely ignored the effects of infill and regardless infill structure and its positive and negative effects analyzes and designs, that it is not economically justified and the positive effects of positive infill to be increased and almost all of the useful capacity of moment frames used for infill. In this paper, by using ABAQUS software, reinforced concrete frame with masonry infill will be modeled, then add a mechanical rubber element to modify the interaction between the frame and infill and thus reduce the losses caused by the presence of infill explains. Finally, by comparing the analytical curves, benefits of this approach we will study and to present the results of the interaction between the frame and infill masonry needs modification and methods it will provide. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=masonry%20infill" title="masonry infill">masonry infill</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20rubber" title=" mechanical rubber"> mechanical rubber</a>, <a href="https://publications.waset.org/abstracts/search?q=reinforced%20concrete%20frame" title=" reinforced concrete frame"> reinforced concrete frame</a>, <a href="https://publications.waset.org/abstracts/search?q=interaction" title=" interaction"> interaction</a>, <a href="https://publications.waset.org/abstracts/search?q=ductility" title=" ductility"> ductility</a> </p> <a href="https://publications.waset.org/abstracts/16441/an-investigation-into-the-interaction-of-concrete-frames-and-infilled-masonry-walls-with-emphasis-on-the-connections" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16441.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">454</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> Urea Amperometric Biosensor Based on Entrapment Immobilization of Urease onto a Nanostructured Polypyrrol and Multi-Walled Carbon Nanotube</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamide%20Amani">Hamide Amani</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20FarahBakhsh"> Afshin FarahBakhsh</a>, <a href="https://publications.waset.org/abstracts/search?q=Iman%20Farahbakhsh"> Iman Farahbakhsh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, an amprometric biosensor based on surface modified polypyrrole (PPy) has been developed for the quantitative estimation of urea in aqueous solutions. The incorporation of urease (Urs) into a bipolymeric substrate consisting of PPy was performed by entrapment to the polymeric matrix, PPy acts as amperometric transducer in these biosensors. To increase the membrane conductivity, multi-walled carbon nanotubes (MWCNT) were added to the PPy solution. The entrapped MWCNT in PPy film and the bipolymer layers were prepared for construction of Pt/PPy/MWCNT/Urs. Two different configurations of working electrodes were evaluated to investigate the potential use of the modified membranes in biosensors. The evaluation of two different configurations of working electrodes suggested that the second configuration, which was composed of an electrode-mediator-(pyrrole and multi-walled carbon nanotube) structure and enzyme, is the best candidate for biosensor applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=urea%20biosensor" title="urea biosensor">urea biosensor</a>, <a href="https://publications.waset.org/abstracts/search?q=polypyrrole" title=" polypyrrole"> polypyrrole</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-walled%20carbon%20nanotube" title=" multi-walled carbon nanotube"> multi-walled carbon nanotube</a>, <a href="https://publications.waset.org/abstracts/search?q=urease" title=" urease"> urease</a> </p> <a href="https://publications.waset.org/abstracts/86192/urea-amperometric-biosensor-based-on-entrapment-immobilization-of-urease-onto-a-nanostructured-polypyrrol-and-multi-walled-carbon-nanotube" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86192.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">329</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> Understanding Mudrocks and Their Shear Strength Deterioration Associated with Inundation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haslinda%20Nahazanan">Haslinda Nahazanan</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Asadi"> Afshin Asadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Zainuddin%20Md.%20Yusoff"> Zainuddin Md. Yusoff</a>, <a href="https://publications.waset.org/abstracts/search?q=Nik%20Nor%20Syahariati%20Nik%20Daud"> Nik Nor Syahariati Nik Daud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Mudrocks is considered as a problematic material due to their unexpected behaviour specifically when they are contacting with water or being exposed to the atmosphere. Many instability problems of cutting slopes were found lying on high slaking mudrocks. It has become one of the major concerns to geotechnical engineer as mudrocks cover up to 50% of sedimentary rocks in the geologic records. Mudrocks display properties between soils and rocks which can be very hard to understand. Therefore, this paper aims to review the definition, mineralogy, geo-chemistry, classification and engineering properties of mudrocks. As water has become one of the major factors that will rapidly change the behaviour of mudrocks, a review on the shear strength of mudrocks in Derbyshire has been made using a fully automated hydraulic stress path testing system under three states: dry, short-term inundated and long-term inundated. It can be seen that the strength of mudrocks has deteriorated as it condition changed from dry to short-term inundated and finally to long-term inundated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mudrocks" title="mudrocks">mudrocks</a>, <a href="https://publications.waset.org/abstracts/search?q=sedimentary%20rocks" title=" sedimentary rocks"> sedimentary rocks</a>, <a href="https://publications.waset.org/abstracts/search?q=inundation" title=" inundation"> inundation</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20strength" title=" shear strength"> shear strength</a> </p> <a href="https://publications.waset.org/abstracts/70946/understanding-mudrocks-and-their-shear-strength-deterioration-associated-with-inundation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70946.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">235</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> Durability of Lime Treated Soil Reinforced by Natural Fibre under Bending Force</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vivi%20Anggraini">Vivi Anggraini</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Asadi"> Afshin Asadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Bujang%20B.%20K.%20Huat"> Bujang B. K. Huat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Earth structures constructed of marine clay soils have tendency to crack. In order to improve the flexural strength and brittleness, a technique of mixing short fibers is introduced to the soil lime mixture. Coir fiber was used in this study as reinforcing elements. An experimental investigation consisting primarily of flexural tensile tests was conducted to examine the influence of coir fibers on the flexural behaviour of the reinforced soils. The test results demonstrated that the coir fibers were effective in improving the flexural strength and young’s modulus of all soils were examined and ductility after peak strength for reinforced marine clay soil was treated by lime. 5% lime treated soil and 1% coir fiber reinforced soil specimen’s demonstrated good strength and durability when submerged in water and retained 45% of their air-cured strengths. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=flexural%20strength" title="flexural strength">flexural strength</a>, <a href="https://publications.waset.org/abstracts/search?q=durabilty" title=" durabilty"> durabilty</a>, <a href="https://publications.waset.org/abstracts/search?q=lime" title=" lime"> lime</a>, <a href="https://publications.waset.org/abstracts/search?q=coir%20fibers" title=" coir fibers"> coir fibers</a>, <a href="https://publications.waset.org/abstracts/search?q=bending%20force" title=" bending force"> bending force</a>, <a href="https://publications.waset.org/abstracts/search?q=ductility" title=" ductility"> ductility</a> </p> <a href="https://publications.waset.org/abstracts/35165/durability-of-lime-treated-soil-reinforced-by-natural-fibre-under-bending-force" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35165.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">466</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> Numerical Investigation of the Effect of Number of Waves on Heat Transfer in a Wavy Wall Enclosure</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ali%20Reza%20Tahavvor">Ali Reza Tahavvor</a>, <a href="https://publications.waset.org/abstracts/search?q=Saeed%20Hosseini"> Saeed Hosseini</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Karimzadeh%20Fard"> Afshin Karimzadeh Fard</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper the effect of wall waviness of side walls in a two-dimensional wavy enclosure is numerically investigated. Two vertical wavy walls and straight top wall are kept isothermal and the bottom wall temperature is higher and spatially varying with cosinusoidal temperature distribution. A computational code based on Finite-volume approach is used to solve governing equations and SIMPLE method is used for pressure velocity coupling. Test is performed for several different numbers of undulations. The Prandtl number was kept constant and the Ra number denotes that the flow is laminar. Temperature and velocity fields are determined. Therefore, according to the obtained results a correlation is proposed for average Nusselt number as a function of number of side wall waves. The results indicate that the Nusselt number is highly affected by number of waves and increasing it decreases the wavy walls Nusselt number; although the Nusselt number is not highly affected by surface waviness when the number of undulations is below one. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cavity" title="cavity">cavity</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20convection" title=" natural convection"> natural convection</a>, <a href="https://publications.waset.org/abstracts/search?q=Nusselt%20number" title=" Nusselt number"> Nusselt number</a>, <a href="https://publications.waset.org/abstracts/search?q=wavy%20wall" title=" wavy wall"> wavy wall</a> </p> <a href="https://publications.waset.org/abstracts/16580/numerical-investigation-of-the-effect-of-number-of-waves-on-heat-transfer-in-a-wavy-wall-enclosure" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16580.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">470</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> Crystalline Structure of Starch Based Nano Composites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Farid%20Amidi%20Fazli">Farid Amidi Fazli</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Babazadeh"> Afshin Babazadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Farnaz%20Amidi%20Fazli"> Farnaz Amidi Fazli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In contrast with literal meaning of nano, researchers have been achieving mega adventures in this area and every day more nanomaterials are being introduced to the market. After long time application of fossil-based plastics, nowadays accumulation of their waste seems to be a big problem to the environment. On the other hand, mankind has more attention to safety and living environment. Replacing common plastic packaging materials with degradable ones that degrade faster and convert to non-dangerous components like water and carbon dioxide have more attractions; these new materials are based on renewable and inexpensive sources of starch and cellulose. However, the functional properties of them do not suitable for packaging. At this point, nanotechnology has an important role. Utilizing of nanomaterials in polymer structure will improve mechanical and physical properties of them; nanocrystalline cellulose (NCC) has this ability. This work has employed a chemical method to produce NCC and starch bio nanocomposite containing NCC. X-Ray Diffraction technique has characterized the obtained materials. Results showed that applied method is a suitable one as well as applicable one to NCC production. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biofilm" title="biofilm">biofilm</a>, <a href="https://publications.waset.org/abstracts/search?q=cellulose" title=" cellulose"> cellulose</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposite" title=" nanocomposite"> nanocomposite</a>, <a href="https://publications.waset.org/abstracts/search?q=starch" title=" starch "> starch </a> </p> <a href="https://publications.waset.org/abstracts/2155/crystalline-structure-of-starch-based-nano-composites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2155.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">405</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> Retrofitting of Bridge Piers against the Scour Damages: Case Study of the Marand-Soofian Route Bridge</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shatirah%20Akib">Shatirah Akib</a>, <a href="https://publications.waset.org/abstracts/search?q=Hossein%20Basser"> Hossein Basser</a>, <a href="https://publications.waset.org/abstracts/search?q=Hojat%20Karami"> Hojat Karami</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Jahangirzadeh"> Afshin Jahangirzadeh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Bridge piers which are constructed in the track of high water rivers cause some variations in the flow patterns. This variation mostly is a result of the changes in river sections. Decreasing the river section, bridge piers significantly impress the flow patterns. Once the flow approaches the piers, the stream lines change their order, causing the appearance of different flow patterns around the bridge piers. New flow patterns are created following the geometry and the other technical characteristics of the piers. One of the most significant consequences of this event is the scour generated around the bridge piers which threatens the safety of the structure. In order to determine the properties of scour holes, to find maximum depth of the scour is an important factor. In this manuscript a numerical simulation of the scour around Marand-Soofian route bridge piers has been carried out via SSIIM 2.0 Software and the amount of maximum scour has been achieved subsequently. Eventually the methods for retrofitting of bridge piers against scours and also the methods for decreasing the amount of scour have been offered. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=scour" title="scour">scour</a>, <a href="https://publications.waset.org/abstracts/search?q=bridge%20pier" title=" bridge pier"> bridge pier</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20simulation" title=" numerical simulation"> numerical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=SSIIM%202.0" title=" SSIIM 2.0"> SSIIM 2.0</a> </p> <a href="https://publications.waset.org/abstracts/4847/retrofitting-of-bridge-piers-against-the-scour-damages-case-study-of-the-marand-soofian-route-bridge" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4847.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">473</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">34</span> Immobilization of Enzymes and Proteins on Epoxy-Activated Supports</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ehsan%20Khorshidian">Ehsan Khorshidian</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Farahbakhsh"> Afshin Farahbakhsh</a>, <a href="https://publications.waset.org/abstracts/search?q=Sina%20Aghili"> Sina Aghili</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Enzymes are promising biocatalysts for many organic reactions. They have excellent features like high activity, specificity and selectivity, and can catalyze under mild and environment friendly conditions. Epoxy-activated supports are almost-ideal ones to perform very easy immobilization of proteins and enzymes at both laboratory and industrial scale. The activated epoxy supports (chitosan/alginate, Eupergit C) may be very suitable to achieve the multipoint covalent attachment of proteins and enzymes, therefore, to stabilize their three-dimensional structure. The enzyme is firstly covalently immobilized under conditions pH 7.0 and 10.0. The remaining groups of the support are blocked to stop additional interaction between the enzyme and support by mercaptoethanol or Triton X-100. The results show support allowed obtaining biocatalysts with high immobilized protein amount and hydrolytic activity. The immobilization of lipases on epoxy support may be considered as attractive tool for obtaining highly active biocatalysts to be used in both aqueous and anhydrous aqueous media. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=immobilization%20of%20enzymes" title="immobilization of enzymes">immobilization of enzymes</a>, <a href="https://publications.waset.org/abstracts/search?q=epoxy%20supports" title=" epoxy supports"> epoxy supports</a>, <a href="https://publications.waset.org/abstracts/search?q=enzyme%20multipoint%20covalent%20attachment" title=" enzyme multipoint covalent attachment"> enzyme multipoint covalent attachment</a>, <a href="https://publications.waset.org/abstracts/search?q=microbial%20lipases" title=" microbial lipases"> microbial lipases</a> </p> <a href="https://publications.waset.org/abstracts/9260/immobilization-of-enzymes-and-proteins-on-epoxy-activated-supports" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9260.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> Comparative Study of Propensity for Amyloidogenesis in Male and Female Mice </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Keivan%20Jamshidi">Keivan Jamshidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Zahedi"> Afshin Zahedi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Reactive amyloidosis is a condition that complicates a long list of chronic inflammation, chronic infectious, malignant, and hereditary disorders. In the present study the propensity for amyloidogenesis in male and female rats on spatio-temporal pattern was evaluated. For this purpose a total of 40 male and female Swiss mice, obtained from Pasteur Institute Tehran, after being weighted were randomly divided into 4 groups including 2 treatment groups [ 10 male (Group A1) and 10 female (Group B1) each], and 2 control groups [10 male (Group A2) and 10 female (Group B2) each]. At the end of 3rd, 5th and 7th weeks of experiment 3 mice were randomly selected and euthnised. Spleen samples of each animal were obtained and preserved in 10% neutral buffer formalin. Sample were then processed through different stages of dehydration, clearing and impregnation and finally embedded in paraffin blocks. Sections of 5µm thickness then cut and stained by alkaline Congo red techniques. The data obtained from polarized microscopic quantitative analysis did show significant differences between groups A1 and B1. A preferential expression of reactive amyloidosis is concluded in male, indicating sex differences in amyloidosis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amyloidosis" title="amyloidosis">amyloidosis</a>, <a href="https://publications.waset.org/abstracts/search?q=amyloidogenesis" title=" amyloidogenesis"> amyloidogenesis</a>, <a href="https://publications.waset.org/abstracts/search?q=mice" title=" mice"> mice</a>, <a href="https://publications.waset.org/abstracts/search?q=gender" title=" gender"> gender</a> </p> <a href="https://publications.waset.org/abstracts/23037/comparative-study-of-propensity-for-amyloidogenesis-in-male-and-female-mice" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23037.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">594</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> An Abbattoir-Based Study on Relative Prevalence of Histopathologic Patterns of Hepatic Lesions in One-Humped Camels (Camelus deromedarius), Semnan, Iran</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Keivan%20Jamshidi">Keivan Jamshidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Zahedi"> Afshin Zahedi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An abattoir based study was carried out during spring 2011 to investigate pathological conditions of the liver in camels (Camelus deromedarius) slaughtered in the Semnan slaughter house, Northern East of Iran. In this study, 40 carcasses out of 150 randomly selected carcasses inspected at postmortem, found with liver lesions. Proper tissue samples obtained from the livers with macroscopic lesions, fixed in 10% neutral buffer formaldehyde, processed for routine histopathological techniques, and finally embedded in paraffin blocks. Sections of 5µm thickness then cut and stained by H&E staining techniques. In histopathological examination of hepatic tissues, following changes were observed: Hydatid cysts; 65%, Cirrhosis; 10%, Hepatic lipidosis (Mild to Severe fatty changes); 12.5%, Glycogen deposition; 2.5%, Cholangitis; 2.8%, Cholangiohepatitis; 5%, Calcified hydatid cyst; 2.5%, Hepatic abscess; 2.5%, lipofuscin pigments; 17.5%. It is concluded that the highest and lowest prevalent patterns of hepatic lesions were hydatid cysts and Hepatic abscess respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=camel" title="camel">camel</a>, <a href="https://publications.waset.org/abstracts/search?q=liver" title=" liver"> liver</a>, <a href="https://publications.waset.org/abstracts/search?q=lesion" title=" lesion"> lesion</a>, <a href="https://publications.waset.org/abstracts/search?q=pathology" title=" pathology"> pathology</a>, <a href="https://publications.waset.org/abstracts/search?q=slaughterhouse" title=" slaughterhouse"> slaughterhouse</a> </p> <a href="https://publications.waset.org/abstracts/30589/an-abbattoir-based-study-on-relative-prevalence-of-histopathologic-patterns-of-hepatic-lesions-in-one-humped-camels-camelus-deromedarius-semnan-iran" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30589.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">478</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> Functionalized DOX Nanocapsules by Iron Oxide Nanoparticles for Targeted Drug Delivery</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Afsaneh%20Ghorbanzadeh">Afsaneh Ghorbanzadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Farahbakhsh"> Afshin Farahbakhsh</a>, <a href="https://publications.waset.org/abstracts/search?q=Zakieh%20Bayat"> Zakieh Bayat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The drug capsulation was used for release and targeted delivery in determined time, place and temperature or pH. The DOX nanocapsules were used to reduce and to minimize the unwanted side effects of drug. In this paper, the encapsulation methods of doxorubicin (DOX) and the labeling it by the magnetic core of iron (Fe3O4) has been studied. The Fe3O4 was conjugated with DOX via hydrazine bond. The solution was capsuled by the sensitive polymer of heat or pH such as chitosan-g-poly (N-isopropylacrylamide-co-N,N-dimethylacrylamide), dextran-g-poly(N-isopropylacrylamide-co-N,N-dimethylacrylamide) and mPEG-G2.5 PAMAM by hydrazine bond. The drug release was very slow at temperatures lower than 380°C. There was a rapid and controlled drug release at temperatures higher than 380°C. According to experiments, the use mPEG-G2.5PAMAM is the best method of DOX nanocapsules synthesis, because in this method, the drug delivery time to certain place is lower than other methods and the percentage of released drug is higher. The synthesized magnetic carrier system has potential applications in magnetic drug-targeting delivery and magnetic resonance imaging. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=drug%20carrier" title="drug carrier">drug carrier</a>, <a href="https://publications.waset.org/abstracts/search?q=drug%20release" title=" drug release"> drug release</a>, <a href="https://publications.waset.org/abstracts/search?q=doxorubicin" title=" doxorubicin"> doxorubicin</a>, <a href="https://publications.waset.org/abstracts/search?q=iron%20oxide%20NPs" title=" iron oxide NPs"> iron oxide NPs</a> </p> <a href="https://publications.waset.org/abstracts/9068/functionalized-dox-nanocapsules-by-iron-oxide-nanoparticles-for-targeted-drug-delivery" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9068.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">417</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> Effects of Allium Sativum Essential Oil on MIC, MBC and Growth Curve of Vibrio Parahaemolyticus ATCC 43996 and Its Thermostable Direct Hemolysin Production</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Akhondzadeh%20Basti">Afshin Akhondzadeh Basti</a>, <a href="https://publications.waset.org/abstracts/search?q=Zohreh%20Mashak"> Zohreh Mashak</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Khanjari"> Ali Khanjari</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Adel%20Rezaei"> Mohammad Adel Rezaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatemeh%20Mohammadkhan"> Fatemeh Mohammadkhan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Vibrio parahaemolyticus is a halophilic bacterium and often causes gastroenteritis because of consumption of raw or inadequately cooked seafood. Studies showed a strong association of thermostable direct hemolysin (TDH) produced by members of this species with its pathogenicity. The effects of garlic (Allium sativum) essential oil at concentrations of 0, 0.005, 0.015, 0.03 and 0.045% on the minimum inhibitiotory concentration (MIC), minimum bactericidal concentration (MBC), growth curve and production of TDH toxin of vibrio parahaemolyticus were studied in BHI model. MIC and MBC of Allium sativum essential oil was estimated 0.03%. The results of this study revealed that the TDH production was significantly affected by Allium sativum EO and titers of TDH production in 0 and 0.005 % were 1/256 whereas this titer in 0.015 % concentration of EO. Concentrations of 0.005 and 0/015 % of garlic essential oil reduced the bacterial growth rate significantly (P < 0.05) compared to the control group. According to the results Allium sativum essential oil showed to be effective against bacterial growth and production of TDH toxin. Its potential application in food systems may be suggested. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=allium%20sativum%20essential%20oil" title="allium sativum essential oil">allium sativum essential oil</a>, <a href="https://publications.waset.org/abstracts/search?q=vibrio%20parahaemolyticus" title=" vibrio parahaemolyticus"> vibrio parahaemolyticus</a>, <a href="https://publications.waset.org/abstracts/search?q=TDH" title=" TDH"> TDH</a>, <a href="https://publications.waset.org/abstracts/search?q=consumption" title=" consumption"> consumption</a> </p> <a href="https://publications.waset.org/abstracts/22990/effects-of-allium-sativum-essential-oil-on-mic-mbc-and-growth-curve-of-vibrio-parahaemolyticus-atcc-43996-and-its-thermostable-direct-hemolysin-production" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22990.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">427</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> Visualized Flow Patterns around and inside a Two-Sided Wind-Catcher in the Presence of Upstream Structures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Afshin">M. Afshin</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Sohankar"> A. Sohankar</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Dehghan%20Manshadi"> M. Dehghan Manshadi</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Daneshgar"> M. R. Daneshgar</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20R.%20Dehghan%20Kamaragi"> G. R. Dehghan Kamaragi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the influence of an upstream structure on the flow pattern within and around the wind-catcher is experimentally investigated by smoke flow visualization techniques. Wind-catchers are an important part of natural ventilation in residential buildings or public places such as shopping centers, libraries, etc. Wind-catchers might be also used in places of high urban densities; hence their potential to provide natural ventilation in this case is dependent on the presence of upstream objects. In this study, the two-sided wind-catcher model was based on a real wind-catcher observed in the city of Yazd, Iran. The present study focuses on the flow patterns inside and outside the isolated two-sided wind-catcher, and on a two-sided wind-catcher in the presence of an upstream structure. The results show that the presence of an upstream structure influences the airflow pattern force and direction. Placing a high upstream object reverses the airflow direction inside the wind-catcher. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=natural%20ventilation" title="natural ventilation">natural ventilation</a>, <a href="https://publications.waset.org/abstracts/search?q=smoke%20flow%20visualization" title=" smoke flow visualization"> smoke flow visualization</a>, <a href="https://publications.waset.org/abstracts/search?q=two-sided%20wind-catcher" title=" two-sided wind-catcher"> two-sided wind-catcher</a>, <a href="https://publications.waset.org/abstracts/search?q=flow%20patterns" title=" flow patterns"> flow patterns</a> </p> <a href="https://publications.waset.org/abstracts/16978/visualized-flow-patterns-around-and-inside-a-two-sided-wind-catcher-in-the-presence-of-upstream-structures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16978.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">573</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> Acrylamide Induced Chronic Nephrotoxicity in Rats</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Zahedi">Afshin Zahedi</a>, <a href="https://publications.waset.org/abstracts/search?q=Keivan%20Jmahidi"> Keivan Jmahidi </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Acrylamide (AA) has been shown to cause neurotoxic effects in humans and neurotoxic, genotoxic, reproductive, and carcinogenic effects in laboratory animals. To investigate the nephrotoxic effect of acrylamide (ACR) 50 adult male rats (Wistar, approximately 250 g) were randomly assigned in 4 groups; including 3 treatment groups and 1 control group named as A, B, C, and D respectively. Rats in treatment groups were exposed to 0.1, 1, and 10 mg/kg ACR per day×90 days p.o (gavage) respectively. The remaining 10 rats in control group received daily p.o (gavage) of 0.9% saline (3ml/kg). On day 91, two rats were randomly selected, perfused, dissected and proper samples were collected from their kidneys. Results of histopathological studies based on H&E technique did not show morphologic changes in kidneys of rats belong to groups A, B and D, while moderate to severe morphologic changes including glomerular hypercellularity, global pattern of proliferative glomerulonephritis, occupation of capsular space, and tubular cell swelling and hyaline cast formation, were observed in different stained sections obtained from the kidneys of rats belong to group, C. This finding, beside neurotoxic, reproductive and carcinogenic effects, indicates for the first time another important aspect of toxic effect of ACR, ie, chronic nephrotoxicity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acrylamide" title="acrylamide">acrylamide</a>, <a href="https://publications.waset.org/abstracts/search?q=nephrotoxicity" title=" nephrotoxicity"> nephrotoxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=glomerulonephritis" title=" glomerulonephritis"> glomerulonephritis</a>, <a href="https://publications.waset.org/abstracts/search?q=rats" title=" rats"> rats</a> </p> <a href="https://publications.waset.org/abstracts/10113/acrylamide-induced-chronic-nephrotoxicity-in-rats" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10113.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">542</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> Different Methods Anthocyanins Extracted from Saffron</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hashem%20Barati">Hashem Barati</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Farahbakhsh"> Afshin Farahbakhsh </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The flowers of saffron contain anthocyanins. Generally, extraction of anthocyanins takes place at low temperatures (below 30 °C), preferably under vacuum (to minimize degradation) and in an acidic environment. In order to extract anthocyanins, the dried petals were added to 30 ml of acidic ethanol (pH=2). Amount of petals, extraction time, temperature, and ethanol percentage which were selected. Total anthocyanin content was a function of both variables of ethanol percent and extraction time.To prepare SW with pH of 3.5, different concentrations of 100, 400, 700, 1,000, and 2,000 ppm of sodium metabisulfite were added to aqueous sodium citrate. At this selected concentration, different extraction times of 20, 40, 60, 120, 180 min were tested to determine the optimum extraction time. When the extraction time was extended from 20 to 60 min, the total recovered anthocyanins of sulfur method changed from 650 to 710 mg/100 g. In the EW method Cellubrix and Pectinex enzymes were added separately to the buffer solution at different concentrations of 1%, 2.5%, 5%, 7%, 10%, and 12.5% and held for 2 hours reaction time at an ambient temperature of 40 °C. There was a considerable and significant difference in trends of Acys content of tepals extracted by pectinex enzymes at 5% concentration and AE solution. <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=anthocyanins" title=" anthocyanins"> anthocyanins</a>, <a href="https://publications.waset.org/abstracts/search?q=acidic%20environment" title=" acidic environment"> acidic environment</a>, <a href="https://publications.waset.org/abstracts/search?q=acidic%20ethanol" title=" acidic ethanol"> acidic ethanol</a>, <a href="https://publications.waset.org/abstracts/search?q=pectinex%20enzymes" title=" pectinex enzymes"> pectinex enzymes</a>, <a href="https://publications.waset.org/abstracts/search?q=Cellubrix%20enzymes" title=" Cellubrix enzymes"> Cellubrix enzymes</a>, <a href="https://publications.waset.org/abstracts/search?q=sodium%20metabisulfite" title=" sodium metabisulfite"> sodium metabisulfite</a> </p> <a href="https://publications.waset.org/abstracts/48478/different-methods-anthocyanins-extracted-from-saffron" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48478.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">513</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> Determination of Safety Distance Around Gas Pipelines Using Numerical Methods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Omid%20Adibi">Omid Adibi</a>, <a href="https://publications.waset.org/abstracts/search?q=Nategheh%20Najafpour"> Nategheh Najafpour</a>, <a href="https://publications.waset.org/abstracts/search?q=Bijan%20Farhanieh"> Bijan Farhanieh</a>, <a href="https://publications.waset.org/abstracts/search?q=Hossein%20Afshin"> Hossein Afshin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Energy transmission pipelines are one of the most vital parts of each country which several strict laws have been conducted to enhance the safety of these lines and their vicinity. One of these laws is the safety distance around high pressure gas pipelines. Safety distance refers to the minimum distance from the pipeline where people and equipment do not confront with serious damages. In the present study, safety distance around high pressure gas transmission pipelines were determined by using numerical methods. For this purpose, gas leakages from cracked pipeline and created jet fires were simulated as continuous ignition, three dimensional, unsteady and turbulent cases. Numerical simulations were based on finite volume method and turbulence of flow was considered using k-ω SST model. Also, the combustion of natural gas and air mixture was applied using the eddy dissipation method. The results show that, due to the high pressure difference between pipeline and environment, flow chocks in the cracked area and velocity of the exhausted gas reaches to sound speed. Also, analysis of the incident radiation results shows that safety distances around 42 inches high pressure natural gas pipeline based on 5 and 15 kW/m<sup>2</sup> criteria are 205 and 272 meters, respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gas%20pipelines" title="gas pipelines">gas pipelines</a>, <a href="https://publications.waset.org/abstracts/search?q=incident%20radiation" title=" incident radiation"> incident radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20simulation" title=" numerical simulation"> numerical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=safety%20distance" title=" safety distance"> safety distance</a> </p> <a href="https://publications.waset.org/abstracts/87834/determination-of-safety-distance-around-gas-pipelines-using-numerical-methods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87834.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">332</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> Acrylamide-Induced Acute Nephrotoxicity in Rats</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Keivan%20Jamshidi">Keivan Jamshidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Zahedi"> Afshin Zahedi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Acrylamide (ACR) has been shown to cause neurotoxic effects in humans and neurotoxic, genotoxic, reproductive, and carcinogenic effects in laboratory animals. To investigate the nephrotoxic effect of Acrylamide (ACR), 50 adult male rats (Wistar, approximately 250 g) housed in polycarbonate boxes as 5 per each, and randomly assigned in 5 groups including 4 exposure groups as A, B, C, and D groups of rats (10 rats per exposure group., total) and were exposed to 0.5, 5, 50, 100 mg/kg ACR per day×11days i.p. respectively. The remaining 10 rats were housed in group (E) as control group. Control rats received daily i.p. injections of 0.9% saline (3ml/kg). On day 12, four rats, were randomly selected, perfused , dissected and proper samples were collected from their kidneys. Results of histopathological studies based on H&E technique did show no morphologic changes in kidneys of rats belong to groups A, B and E, while moderate to severe morphologic changes including glomerular hypercellularity, global pattern of proliferative glomerulonephritis, occupation of capsular space, tubular cell swelling and hyaline cast formation, were observed in different stained sections obtained from the kidneys of rats belong to group, C, and D. This finding, beside neurotoxic, reproductive and carcinogenic effects, seems to indicate for the first time another important aspect of toxic effect of ACR, i.e., acute nephrotoxicity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acrylamide" title="acrylamide">acrylamide</a>, <a href="https://publications.waset.org/abstracts/search?q=nephrotoxicity" title=" nephrotoxicity"> nephrotoxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=glomerulonephritis" title=" glomerulonephritis"> glomerulonephritis</a>, <a href="https://publications.waset.org/abstracts/search?q=rats" title=" rats"> rats</a> </p> <a href="https://publications.waset.org/abstracts/23035/acrylamide-induced-acute-nephrotoxicity-in-rats" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23035.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">617</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> The Methods of Immobilization of Laccase for Direct Transfer in an Enzymatic Fuel Cell</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Farahbakhsh">Afshin Farahbakhsh</a>, <a href="https://publications.waset.org/abstracts/search?q=Hoda%20Khodadadi"> Hoda Khodadadi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we compare five methods of biological fuel cell fabrication by combining a Shewanella oneidensis microbial anode and a laccase-modified air-breathing cathode. As a result of biofuel cell laccase with graphite nanofibers, carbon surface (PAMAN) on the pt/hpg electrode, graphite sheets MWCNT and with (PG) and (MWCNT) showed, respectively. Describes methods for creating controllable and reproducible bio-anodes and demonstrates the versatility of hybrid biological fuel cells. The laccase-based biocathodes prepared either with the crude extract or with the purified enzyme can provide electrochemically active and stable biomaterials. The laccase-based biocathodes prepared either with the crude extract or with the purified enzyme can provide electrochemically active and stable biomaterials. When the device was fed with transdermal extracts, containing only 30μM of glucose, the average peak power was proportionally lower (0.004mW). The result of biofuel cell with graphite nanofibers showed the enzymatic fuel cell reaches 0.5 V at open circuit voltage with both, ethanol and methanol and the maximum current density observed for E2electrode was 228.94mAcm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=enzymatic%20electrode" title="enzymatic electrode">enzymatic electrode</a>, <a href="https://publications.waset.org/abstracts/search?q=fuel%20cell" title=" fuel cell"> fuel cell</a>, <a href="https://publications.waset.org/abstracts/search?q=immobilization" title=" immobilization"> immobilization</a>, <a href="https://publications.waset.org/abstracts/search?q=laccase" title=" laccase"> laccase</a> </p> <a href="https://publications.waset.org/abstracts/52042/the-methods-of-immobilization-of-laccase-for-direct-transfer-in-an-enzymatic-fuel-cell" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/52042.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> <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=Afshin%20Veisi&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Afshin%20Veisi&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a 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