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simulating projectile</title> <meta name="description" content="Search results for: fragment simulating projectile"> <meta name="keywords" content="fragment simulating projectile"> <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> 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="fragment simulating projectile"> <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> 554</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: fragment simulating projectile</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">554</span> Terminal Ballistic Analysis of Non-Filled and Water-Filled Tank</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Aziz">M. R. Aziz</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Kuntjoro"> W. Kuntjoro</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20V.%20David"> N. V. David</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the ballistic terminal study of the non-filled and water-filled aluminum tank. The objective was to determine the failure stages for both cases. The tank was impacted by fragment simulating projectile (FSP) with 260 m/s for non-filled and 972 m/s for water-filled. The aluminum tank was 3 mm thick, 150 mm wide and 750 mm long. The ends of the tank were closed with two polymethyl methacrylate (PMMA) windows. The test was conducted at the Science and Technology Research Institute for Defense (STRIDE) Batu Arang, Selangor, Malaysia. The results showed four main stages for non-filled tank, which were first contact between FSP and the tank, partially perforated, fully perforated with FSP and plug still intact and lastly fully perforated with FSP and plug separated. Meanwhile, for the water-filled tank, there were seven main stages, which were first contact between FSP and the tank, partial perforation, full perforation, drag phase, cavity phase, bounce wave event and the collapse of the cavity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fragment%20simulating%20projectile" title="fragment simulating projectile">fragment simulating projectile</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20speed%20camera" title=" high speed camera"> high speed camera</a>, <a href="https://publications.waset.org/abstracts/search?q=tensile%20test" title=" tensile test"> tensile test</a>, <a href="https://publications.waset.org/abstracts/search?q=terminal%20ballistic" title=" terminal ballistic"> terminal ballistic</a> </p> <a href="https://publications.waset.org/abstracts/4371/terminal-ballistic-analysis-of-non-filled-and-water-filled-tank" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4371.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">304</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">553</span> Numerical Predictions of Trajectory Stability of a High-Speed Water-Entry and Water-Exit Projectile </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lin%20Lu">Lin Lu</a>, <a href="https://publications.waset.org/abstracts/search?q=Qiang%20Li"> Qiang Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Tao%20Cai"> Tao Cai</a>, <a href="https://publications.waset.org/abstracts/search?q=Pengjun%20Zhang"> Pengjun Zhang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, a detailed analysis of trajectory stability and flow characteristics of a high-speed projectile during the water-entry and water-exit process has been investigated numerically. The Zwart-Gerber-Belamri (Z-G-B) cavitation model and the SST k-ω turbulence model based on the Reynolds Averaged Navier-Stokes (RANS) method are employed. The numerical methodology is validated by comparing the experimental photograph of cavitation shape and the experimental underwater velocity with the numerical simulation results. Based on the numerical methodology, the influences of rotational speed, water-entry and water-exit angle of the projectile on the trajectory stability and flow characteristics have been carried out in detail. The variation features of projectile trajectory and total resistance have been conducted, respectively. In addition, the cavitation characteristics of water-entry and water-exit have been presented and analyzed. Results show that it may not be applicable for the water-entry and water-exit to achieve the projectile stability through the rotation of projectile. Furthermore, there ought to be a critical water-entry angle for the water-entry stability of practical projectile. The impact of water-exit angle on the trajectory stability and cavity phenomenon is not as remarkable as that of the water-entry angle. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cavitation%20characteristics" title="cavitation characteristics">cavitation characteristics</a>, <a href="https://publications.waset.org/abstracts/search?q=high-speed%20projectile" title=" high-speed projectile"> high-speed projectile</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20predictions" title=" numerical predictions"> numerical predictions</a>, <a href="https://publications.waset.org/abstracts/search?q=trajectory%20stability" title=" trajectory stability"> trajectory stability</a>, <a href="https://publications.waset.org/abstracts/search?q=water-entry" title=" water-entry"> water-entry</a>, <a href="https://publications.waset.org/abstracts/search?q=water-exit" title=" water-exit"> water-exit</a> </p> <a href="https://publications.waset.org/abstracts/119865/numerical-predictions-of-trajectory-stability-of-a-high-speed-water-entry-and-water-exit-projectile" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/119865.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">136</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">552</span> Explosion Mechanics of Aluminum Plates Subjected to the Combined Effect of Blast Wave and Fragment Impact Loading: A Multicase Computational Modeling Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Atoui%20Oussama">Atoui Oussama</a>, <a href="https://publications.waset.org/abstracts/search?q=Maazoun%20Azer"> Maazoun Azer</a>, <a href="https://publications.waset.org/abstracts/search?q=Belkassem%20Bachir"> Belkassem Bachir</a>, <a href="https://publications.waset.org/abstracts/search?q=Pyl%20Lincy"> Pyl Lincy</a>, <a href="https://publications.waset.org/abstracts/search?q=Lecompte%20David"> Lecompte David</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For many decades, researchers have been focused on understanding the dynamic behavior of different structures and materials subjected to fragment impact or blast loads separately. The explosion mechanics, as well as the impact physics studies dealing with the numerical modeling of the response of protective structures under the synergistic effect of a blast wave and the impact of fragments, are quite limited in the literature. This article numerically evaluates the nonlinear dynamic behavior and damage mechanisms of Aluminum plates EN AW-1050A- H24 under different combined loading scenarios varied by the sequence of the applied loads using the commercial software LS-DYNA. For one hand, with respect to the terminal ballistic field investigations, a Lagrangian (LAG) formulation is used to evaluate the different failure modes of the target material in case of a fragment impact. On the other hand, with respect to the blast field analysis, an Arbitrary Lagrangian-Eulerian (ALE) formulation is considered to study the fluid-structure interaction (FSI) of the shock wave and the plate in case of a blast loading. Four different loading scenarios are considered: (1) only blast loading, (2) only fragment impact, (3) blast loading followed by a fragment impact and (4) a fragment impact followed by blast loading. From the numerical results, it was observed that when the impact load is applied to the plate prior to the blast load, it suffers more severe damage due to the hole enlargement phenomenon and the effects of crack propagation on the circumference of the damaged zone. Moreover, it was found that the hole from the fragment impact loading was enlarged to about three times in diameter as compared to the diameter of the projectile. The validation of the proposed computational model is based in part on previous experimental data obtained by the authors and in the other part on experimental data obtained from the literature. A good correspondence between the numerical and experimental results is found. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=computational%20analysis" title="computational analysis">computational analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=combined%20loading" title=" combined loading"> combined loading</a>, <a href="https://publications.waset.org/abstracts/search?q=explosion%20mechanics" title=" explosion mechanics"> explosion mechanics</a>, <a href="https://publications.waset.org/abstracts/search?q=hole%20enlargement%20phenomenon" title=" hole enlargement phenomenon"> hole enlargement phenomenon</a>, <a href="https://publications.waset.org/abstracts/search?q=impact%20physics" title=" impact physics"> impact physics</a>, <a href="https://publications.waset.org/abstracts/search?q=synergistic%20effect" title=" synergistic effect"> synergistic effect</a>, <a href="https://publications.waset.org/abstracts/search?q=terminal%20ballistic" title=" terminal ballistic"> terminal ballistic</a> </p> <a href="https://publications.waset.org/abstracts/135997/explosion-mechanics-of-aluminum-plates-subjected-to-the-combined-effect-of-blast-wave-and-fragment-impact-loading-a-multicase-computational-modeling-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135997.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">184</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">551</span> A Preliminary Study on the Effects of Lung Impact on Ballistic Thoracic Trauma</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amy%20Pullen">Amy Pullen</a>, <a href="https://publications.waset.org/abstracts/search?q=Samantha%20Rodrigues"> Samantha Rodrigues</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20Kieser"> David Kieser</a>, <a href="https://publications.waset.org/abstracts/search?q=Brian%20Shaw"> Brian Shaw</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the study was to determine if a projectile interacting with the lungs increases the severity of injury in comparison to a projectile interacting with the ribs or intercostal muscle. This comparative study employed a 10% gelatine based model with either porcine ribs or balloons embedded to represent a lung. Four sample groups containing five samples were evaluated; these were control (plain gel), intercostal impact, rib impact, and lung impact. Two ammunition natures were evaluated at a range of 10m; these were 5.56x45mm and 7.62x51mm. Aspects of projectile behavior were quantified including exiting projectile weight, location of yawing, projectile fragmentation and distribution, location and area of the temporary cavity, permanent cavity formation, and overall energy deposition. Major findings included the cavity showing a higher percentage of the projectile weight exit the block than the intercostal and ribs, but similar to the control for the 5.56mm ammunition. However, for the 7.62mm ammunition, the lung was shown to have a higher percentage of the projectile weight exit the block than the control, intercostal and ribs. The total weight of projectile fragments as a function of penetration depth revealed large fluctuations and significant intra-group variation for both ammunition natures. Despite the lack of a clear trend, both plots show that the lung leads to greater projectile fragments exiting the model. The lung was shown to have a later center of the temporary cavity than the control, intercostal and ribs for both ammunition types. It was also shown to have a similar temporary cavity volume to the control, intercostal and ribs for the 5.56mm ammunition and a similar temporary cavity to the intercostal for the 7.62mm ammunition The lung was shown to leave a similar projectile tract than the control, intercostal and ribs for both ammunition types. It was also shown to have larger shear planes than the control and the intercostal, but similar to the ribs for the 5.56mm ammunition, whereas it was shown to have smaller shear planes than the control but similar shear planes to the intercostal and ribs for the 7.62mm ammunition. The lung was shown to have less energy deposited than the control, intercostal and ribs for both ammunition types. This comparative study provides insights into the influence of the lungs on thoracic gunshot trauma. It indicates that the lungs limits projectile deformation and causes a later onset of yawing and subsequently limits the energy deposited along the wound tract creating a deeper and smaller cavity. This suggests that lung impact creates an altered pattern of local energy deposition within the target which will affect the severity of trauma. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ballistics" title="ballistics">ballistics</a>, <a href="https://publications.waset.org/abstracts/search?q=lung" title=" lung"> lung</a>, <a href="https://publications.waset.org/abstracts/search?q=trauma" title=" trauma"> trauma</a>, <a href="https://publications.waset.org/abstracts/search?q=wounding" title=" wounding"> wounding</a> </p> <a href="https://publications.waset.org/abstracts/106200/a-preliminary-study-on-the-effects-of-lung-impact-on-ballistic-thoracic-trauma" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106200.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">171</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">550</span> Spin Rate Decaying Law of Projectile with Hemispherical Head in Exterior Trajectory</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Quan%20Wen">Quan Wen</a>, <a href="https://publications.waset.org/abstracts/search?q=Tianxiao%20Chang"> Tianxiao Chang</a>, <a href="https://publications.waset.org/abstracts/search?q=Shaolu%20Shi"> Shaolu Shi</a>, <a href="https://publications.waset.org/abstracts/search?q=Yushi%20Wang"> Yushi Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Guangyu%20Wang"> Guangyu Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As a kind of working environment of the fuze, the spin rate decaying law of projectile in exterior trajectory is of great value in the design of the rotation count fixed distance fuze. In addition, it is significant in the field of devices for simulation tests of fuze exterior ballistic environment, flight stability, and dispersion accuracy of gun projectile and opening and scattering design of submunition and illuminating cartridges. Besides, the self-destroying mechanism of the fuze in small-caliber projectile often works by utilizing the attenuation of centrifugal force. In the theory of projectile aerodynamics and fuze design, there are many formulas describing the change law of projectile angular velocity in external ballistic such as Roggla formula, exponential function formula, and power function formula. However, these formulas are mostly semi-empirical due to the poor test conditions and insufficient test data at that time. These formulas are difficult to meet the design requirements of modern fuze because they are not accurate enough and have a narrow range of applications now. In order to provide more accurate ballistic environment parameters for the design of a hemispherical head projectile fuze, the projectile’s spin rate decaying law in exterior trajectory under the effect of air resistance was studied. In the analysis, the projectile shape was simplified as hemisphere head, cylindrical part, rotating band part, and anti-truncated conical tail. The main assumptions are as follows: a) The shape and mass are symmetrical about the longitudinal axis, b) There is a smooth transition between the ball hea, c) The air flow on the outer surface is set as a flat plate flow with the same area as the expanded outer surface of the projectile, and the boundary layer is turbulent, d) The polar damping moment attributed to the wrench hole and rifling mark on the projectile is not considered, e) The groove of the rifle on the rotating band is uniform, smooth and regular. The impacts of the four parts on aerodynamic moment of the projectile rotation were obtained by aerodynamic theory. The surface friction stress of the projectile, the polar damping moment formed by the head of the projectile, the surface friction moment formed by the cylindrical part, the rotating band, and the anti-truncated conical tail were obtained by mathematical derivation. After that, the mathematical model of angular spin rate attenuation was established. In the whole trajectory with the maximum range angle (38°), the absolute error of the polar damping torque coefficient obtained by simulation and the coefficient calculated by the mathematical model established in this paper is not more than 7%. Therefore, the credibility of the mathematical model was verified. The mathematical model can be described as a first-order nonlinear differential equation, which has no analytical solution. The solution can be only gained as a numerical solution by connecting the model with projectile mass motion equations in exterior ballistics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ammunition%20engineering" title="ammunition engineering">ammunition engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=fuze%20technology" title=" fuze technology"> fuze technology</a>, <a href="https://publications.waset.org/abstracts/search?q=spin%20rate" title=" spin rate"> spin rate</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20simulation" title=" numerical simulation"> numerical simulation</a> </p> <a href="https://publications.waset.org/abstracts/137510/spin-rate-decaying-law-of-projectile-with-hemispherical-head-in-exterior-trajectory" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/137510.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">144</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">549</span> Prediction of Finned Projectile Aerodynamics Using a Lattice-Boltzmann Method CFD Solution</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zaki%20Abiza">Zaki Abiza</a>, <a href="https://publications.waset.org/abstracts/search?q=Miguel%20Chavez"> Miguel Chavez</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20M.%20Holman"> David M. Holman</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruddy%20Brionnaud"> Ruddy Brionnaud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the prediction of the aerodynamic behavior of the flow around a Finned Projectile will be validated using a Computational Fluid Dynamics (CFD) solution, XFlow, based on the Lattice-Boltzmann Method (LBM). XFlow is an innovative CFD software developed by Next Limit Dynamics. It is based on a state-of-the-art Lattice-Boltzmann Method which uses a proprietary particle-based kinetic solver and a LES turbulent model coupled with the generalized law of the wall (WMLES). The Lattice-Boltzmann method discretizes the continuous Boltzmann equation, a transport equation for the particle probability distribution function. From the Boltzmann transport equation, and by means of the Chapman-Enskog expansion, the compressible Navier-Stokes equations can be recovered. However to simulate compressible flows, this method has a Mach number limitation because of the lattice discretization. Thanks to this flexible particle-based approach the traditional meshing process is avoided, the discretization stage is strongly accelerated reducing engineering costs, and computations on complex geometries are affordable in a straightforward way. The projectile that will be used in this work is the Army-Navy Basic Finned Missile (ANF) with a caliber of 0.03 m. The analysis will consist in varying the Mach number from M=0.5 comparing the axial force coefficient, normal force slope coefficient and the pitch moment slope coefficient of the Finned Projectile obtained by XFlow with the experimental data. The slope coefficients will be obtained using finite difference techniques in the linear range of the polar curve. The aim of such an analysis is to find out the limiting Mach number value starting from which the effects of high fluid compressibility (related to transonic flow regime) lead the XFlow simulations to differ from the experimental results. This will allow identifying the critical Mach number which limits the validity of the isothermal formulation of XFlow and beyond which a fully compressible solver implementing a coupled momentum-energy equations would be required. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CFD" title="CFD">CFD</a>, <a href="https://publications.waset.org/abstracts/search?q=computational%20fluid%20dynamics" title=" computational fluid dynamics"> computational fluid dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=drag" title=" drag"> drag</a>, <a href="https://publications.waset.org/abstracts/search?q=finned%20projectile" title=" finned projectile"> finned projectile</a>, <a href="https://publications.waset.org/abstracts/search?q=lattice-boltzmann%20method" title=" lattice-boltzmann method"> lattice-boltzmann method</a>, <a href="https://publications.waset.org/abstracts/search?q=LBM" title=" LBM"> LBM</a>, <a href="https://publications.waset.org/abstracts/search?q=lift" title=" lift"> lift</a>, <a href="https://publications.waset.org/abstracts/search?q=mach" title=" mach"> mach</a>, <a href="https://publications.waset.org/abstracts/search?q=pitch" title=" pitch"> pitch</a> </p> <a href="https://publications.waset.org/abstracts/42078/prediction-of-finned-projectile-aerodynamics-using-a-lattice-boltzmann-method-cfd-solution" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42078.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">421</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">548</span> Composition, Velocity, and Mass of Projectiles Generated from a Chain Shot Event</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eric%20Shannon">Eric Shannon</a>, <a href="https://publications.waset.org/abstracts/search?q=Mark%20J.%20McGuire"> Mark J. McGuire</a>, <a href="https://publications.waset.org/abstracts/search?q=John%20P.%20Parmigiani"> John P. Parmigiani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A hazard associated with the use of timber harvesters is chain shot. Harvester saw chain is subjected to large dynamic mechanical stresses which can cause it to fracture. The resulting open loop of saw chain can fracture a second time and create a projectile consisting of several saw-chain links referred to as a chain shot. Its high kinetic energy enables it to penetrate operator enclosures and be a significant hazard. Accurate data on projectile composition, mass, and speed are needed for the design of both operator enclosures resistant to projectile penetration and for saw chain resistant to fracture. The work presented here contributes to providing this data through the use of a test machine designed and built at Oregon State University. The machine’s enclosure is a standard shipping container. To safely contain any anticipated chain shot, the container was lined with both 9.5 mm AR500 steel plates and 50 mm high-density polyethylene (HDPE). During normal operation, projectiles are captured virtually undamaged in the HDPE enabling subsequent analysis. Standard harvester components are used for bar mounting and chain tensioning. Standard guide bars and saw chains are used. An electric motor with flywheel drives the system. Testing procedures follow ISO Standard 11837. Chain speed at break was approximately 45.5 m/s. Data was collected using both a 75 cm solid bar (Oregon 752HSFB149) and 90 cm solid bar (Oregon 902HSFB149). Saw chains used were 89 Drive Link .404”-18HX loops made from factory spools. Standard 16-tooth sprockets were used. Projectile speed was measured using both a high-speed camera and a chronograph. Both rotational and translational kinetic energy are calculated. For this study 50 chain shot events were executed. Results showed that projectiles consisted of a variety combinations of drive links, tie straps, and cutter links. Most common (occurring in 60% of the events) was a drive-link / tie-strap / drive-link combination having a mass of approximately 10.33 g. Projectile mass varied from a minimum of 2.99 g corresponding to a drive link only to a maximum of 18.91 g corresponding to a drive-link / tie-strap / drive-link / cutter-link / drive-link combination. Projectile translational speed was measured to be approximately 270 m/s and rotational speed of approximately 14000 r/s. The calculated translational and rotational kinetic energy magnitudes each average over 600 J. This study provides useful information for both timber harvester manufacturers and saw chain manufacturers to design products that reduce the hazards associated with timber harvesting. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chain%20shot" title="chain shot">chain shot</a>, <a href="https://publications.waset.org/abstracts/search?q=timber%20harvesters" title=" timber harvesters"> timber harvesters</a>, <a href="https://publications.waset.org/abstracts/search?q=safety" title=" safety"> safety</a>, <a href="https://publications.waset.org/abstracts/search?q=testing" title=" testing "> testing </a> </p> <a href="https://publications.waset.org/abstracts/111312/composition-velocity-and-mass-of-projectiles-generated-from-a-chain-shot-event" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/111312.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">146</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">547</span> A Generic Approach to Reuse Unified Modeling Language Components Following an Agile Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rim%20Bouhaouel">Rim Bouhaouel</a>, <a href="https://publications.waset.org/abstracts/search?q=Naoufel%20Kra%C3%AFem"> Naoufel Kraïem</a>, <a href="https://publications.waset.org/abstracts/search?q=Zuhoor%20Al%20Khanjari"> Zuhoor Al Khanjari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Unified Modeling Language (UML) is considered as one of the widespread modeling language standardized by the Object Management Group (OMG). Therefore, the model driving engineering (MDE) community attempts to provide reuse of UML diagrams, and do not construct it from scratch. The UML model appears according to a specific software development process. The existing method generation models focused on the different techniques of transformation without considering the development process. Our work aims to construct an UML component from fragments of UML diagram basing on an agile method. We define UML fragment as a portion of a UML diagram, which express a business target. To guide the generation of fragments of UML models using an agile process, we need a flexible approach, which adapts to the agile changes and covers all its activities. We use the software product line (SPL) to derive a fragment of process agile method. This paper explains our approach, named RECUP, to generate UML fragments following an agile process, and overviews the different aspects. In this paper, we present the approach and we define the different phases and artifacts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=UML" title="UML">UML</a>, <a href="https://publications.waset.org/abstracts/search?q=component" title=" component"> component</a>, <a href="https://publications.waset.org/abstracts/search?q=fragment" title=" fragment"> fragment</a>, <a href="https://publications.waset.org/abstracts/search?q=agile" title=" agile"> agile</a>, <a href="https://publications.waset.org/abstracts/search?q=SPL" title=" SPL"> SPL</a> </p> <a href="https://publications.waset.org/abstracts/35278/a-generic-approach-to-reuse-unified-modeling-language-components-following-an-agile-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35278.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">397</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">546</span> Identification of Mx Gene Polymorphism in Indragiri Hulu duck by PCR-RFLP</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Restu%20Misrianti">Restu Misrianti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The amino acid variation of Asn (allele A) at position 631 in Mx gene was specific to positive antiviral to avian viral desease. This research was aimed at identifying polymorphism of Mx gene in duck using molecular technique. Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) technique was used to select the genotype of AA, AG and GG. There were thirteen duck from Indragiri Hulu regency (Riau Province) used in this experiment. DNA amplification results showed that the Mx gene in duck is found in a 73 bp fragment. Mx gene in duck did not show any polymorphism. The frequency of the resistant allele (AA) was 0%, while the frequency of the susceptible allele (GG) was 100%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=duck" title="duck">duck</a>, <a href="https://publications.waset.org/abstracts/search?q=Mx%20gene" title=" Mx gene"> Mx gene</a>, <a href="https://publications.waset.org/abstracts/search?q=PCR" title=" PCR"> PCR</a>, <a href="https://publications.waset.org/abstracts/search?q=RFLP" title=" RFLP"> RFLP</a> </p> <a href="https://publications.waset.org/abstracts/37764/identification-of-mx-gene-polymorphism-in-indragiri-hulu-duck-by-pcr-rflp" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37764.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">324</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">545</span> Detection of Polymorphism of Growth Hormone Gene in Holstein Cattle</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Emine%20%C5%9Eahin">Emine Şahin</a>, <a href="https://publications.waset.org/abstracts/search?q=Murat%20Soner%20Balc%C4%B1o%C4%9Flu"> Murat Soner Balcıoğlu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this study was to determine the growth hormone (bGH) gene polymorphism in the Holstein cattle growing around Antalya in Turkey. In order to determine the bGH-AluI polymorphism, polymerase chain reaction - restriction fragment length polymorphism (PCR-RFLP) method was performed. A 891 bp fragment of bGH was amplified and two types of alleles C and D for bGH were observed. In this study, the frequencies of C and D alleles were 0.8438 and 0.1562, respectively. The genotype frequencies for CC, CD and DD were 0.787, 0.191 and 0.022, respectively. According to the results of the chi-square test, a significant deviation from the Hardy-Weinberg equilibrium was not determined for the bGH locus in the population. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Growth%20Hormone%20Gene" title="Growth Hormone Gene">Growth Hormone Gene</a>, <a href="https://publications.waset.org/abstracts/search?q=Holstein" title=" Holstein "> Holstein </a>, <a href="https://publications.waset.org/abstracts/search?q=Polymorphism" title=" Polymorphism"> Polymorphism</a>, <a href="https://publications.waset.org/abstracts/search?q=RFLP" title=" RFLP"> RFLP</a> </p> <a href="https://publications.waset.org/abstracts/63845/detection-of-polymorphism-of-growth-hormone-gene-in-holstein-cattle" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63845.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">371</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">544</span> An Analytical Systematic Design Approach to Evaluate Ballistic Performance of Armour Grade AA7075 Aluminium Alloy Using Friction Stir Processing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lahari%20Ramya%20Pa">Lahari Ramya Pa</a>, <a href="https://publications.waset.org/abstracts/search?q=Sudhakar%20Ib"> Sudhakar Ib</a>, <a href="https://publications.waset.org/abstracts/search?q=Madhu%20Vc"> Madhu Vc</a>, <a href="https://publications.waset.org/abstracts/search?q=Madhusudhan%20Reddy%20Gd"> Madhusudhan Reddy Gd</a>, <a href="https://publications.waset.org/abstracts/search?q=Srinivasa%20Rao%20E."> Srinivasa Rao E.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Selection of suitable armor materials for defense applications is very crucial with respect to increasing mobility of the systems as well as maintaining safety. Therefore, determining the material with the lowest possible areal density that resists the predefined threat successfully is required in armor design studies. A number of light metal and alloys are come in to forefront especially to substitute the armour grade steels. AA5083 aluminium alloy which fit in to the military standards imposed by USA army is foremost nonferrous alloy to consider for possible replacement of steel to increase the mobility of armour vehicles and enhance fuel economy. Growing need of AA5083 aluminium alloy paves a way to develop supplement aluminium alloys maintaining the military standards. It has been witnessed that AA 2xxx aluminium alloy, AA6xxx aluminium alloy and AA7xxx aluminium alloy are the potential material to supplement AA5083 aluminium alloy. Among those cited aluminium series alloys AA7xxx aluminium alloy (heat treatable) possesses high strength and can compete with armour grade steels. Earlier investigations revealed that layering of AA7xxx aluminium alloy can prevent spalling of rear portion of armour during ballistic impacts. Hence, present investigation deals with fabrication of hard layer (made of boron carbide) i.e. layer on AA 7075 aluminium alloy using friction stir processing with an intention of blunting the projectile in the initial impact and backing tough portion(AA7xxx aluminium alloy) to dissipate residual kinetic energy. An analytical approach has been adopted to unfold the ballistic performance of projectile. Penetration of projectile inside the armour has been resolved by considering by strain energy model analysis. Perforation shearing areas i.e. interface of projectile and armour is taken in to account for evaluation of penetration inside the armour. Fabricated surface composites (targets) were tested as per the military standard (JIS.0108.01) in a ballistic testing tunnel at Defence Metallurgical Research Laboratory (DMRL), Hyderabad in standardized testing conditions. Analytical results were well validated with experimental obtained one. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AA7075%20aluminium%20alloy" title="AA7075 aluminium alloy">AA7075 aluminium alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=friction%20stir%20processing" title=" friction stir processing"> friction stir processing</a>, <a href="https://publications.waset.org/abstracts/search?q=boron%20carbide" title=" boron carbide"> boron carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=ballistic%20performance" title=" ballistic performance"> ballistic performance</a>, <a href="https://publications.waset.org/abstracts/search?q=target" title=" target"> target</a> </p> <a href="https://publications.waset.org/abstracts/21635/an-analytical-systematic-design-approach-to-evaluate-ballistic-performance-of-armour-grade-aa7075-aluminium-alloy-using-friction-stir-processing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21635.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">330</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">543</span> Novel Recombinant Betasatellite Associated with Vein Thickening Symptoms on Okra Plants in Saudi Arabia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adel%20M.%20Zakri">Adel M. Zakri</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20A.%20Al-Saleh"> Mohammed A. Al-Saleh</a>, <a href="https://publications.waset.org/abstracts/search?q=Judith.%20K.%20Brown"> Judith. K. Brown</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20M.%20Idris"> Ali M. Idris</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Betasatellites are small circular single stranded DNA molecules found associated with begomoviruses on field symptomatic plants. Their genome size is about half that of the helper begomovirus, ranging between 1.3 and 1.4 kb. The helper begomoviruses are usually members of the family Geminiviridae. Okra leaves showing vein thickening were collected from okra plants growing in Jazan, Saudi Arabia. Total DNA was extracted from leaves and used as a template to amplify circular DNA using rolling circle amplification (RCA) technology. Products were digested with PstI to linearize the helper viral genome(s), and associated DNA satellite(s), yielding a 2.8kbp and 1.4kbp fragment, respectively. The linearized fragments were cloned into the pGEM-5Zf (+) vector and subjected to DNA sequencing. The 2.8 kb fragment was identified as Cotton leaf curl Gezira virus genome, at 2780bp, an isolate closely related to strains reported previously from Saudi Arabia. A clone obtained from the 1.4 kb fragments he 1.4kb was blasted to GeneBank database found to be a betasatellite. The genome of betasatellite was 1357-bp in size. It was found to be a recombinant containing one fragment (877-bp) that shared 91% nt identity with Cotton leaf curl Gezira betasatellite [KM279620], and a smaller fragment [133--bp) that shared 86% nt identity with Tomato leaf curl Sudan virus [JX483708]. This satellite is thus a recombinant between a malvaceous-infecting satellite and a solanaceous-infecting begomovirus. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=begomovirus" title="begomovirus">begomovirus</a>, <a href="https://publications.waset.org/abstracts/search?q=betasatellites" title=" betasatellites"> betasatellites</a>, <a href="https://publications.waset.org/abstracts/search?q=cotton%20leaf%20curl%20Gezira%20virus" title=" cotton leaf curl Gezira virus"> cotton leaf curl Gezira virus</a>, <a href="https://publications.waset.org/abstracts/search?q=okra%20plants" title=" okra plants"> okra plants</a> </p> <a href="https://publications.waset.org/abstracts/39401/novel-recombinant-betasatellite-associated-with-vein-thickening-symptoms-on-okra-plants-in-saudi-arabia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39401.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">341</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">542</span> Effect of Clinical Parameters on Strength of Reattached Tooth Fragment in Anterior Teeth: Systematic Review and Meta-Analysis </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Neeraj%20Malhotra">Neeraj Malhotra</a>, <a href="https://publications.waset.org/abstracts/search?q=Ramya%20Shenoy"> Ramya Shenoy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objective: To assess the effect of clinical parameters (bonding agent, preparation design & storage media) on the strength of reattached anterior tooth fragment. Methodology: This is a systematic review and meta-analysis for articles referred from MEDLINE, PUBMED, and GOOGLE SCHOLAR. The articles on tooth reattachment and clinical factors affecting fracture strength/bond strength/fracture resistance of the reattached tooth fragment in anterior teeth and published in English from 1999 to 2016 were included for final review. Results: Out of 120 shortlisted articles, 28 articles were included for the systematic review and meta-analysis based on 3 clinical parameters i.e. bonding agent, tooth preparation design & storage media. Forest plot & funnel plots were generated based on individual clinical parameter and their effect on strength of reattached anterior tooth fragment. Results based on analysis suggest combination of both conclusive evidence favoring the experimental group as well as in-conclusive evidence for individual parameter. Conclusion: There is limited evidence as there are fewer articles supporting each parameter in human teeth. Bonding agent had showed better outcome in selected studies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bonding%20agent" title="bonding agent">bonding agent</a>, <a href="https://publications.waset.org/abstracts/search?q=bond%20strength" title=" bond strength"> bond strength</a>, <a href="https://publications.waset.org/abstracts/search?q=fracture%20strength" title=" fracture strength"> fracture strength</a>, <a href="https://publications.waset.org/abstracts/search?q=preparation%20design" title=" preparation design"> preparation design</a>, <a href="https://publications.waset.org/abstracts/search?q=reattachment" title=" reattachment"> reattachment</a>, <a href="https://publications.waset.org/abstracts/search?q=storage%20media" title=" storage media"> storage media</a> </p> <a href="https://publications.waset.org/abstracts/80832/effect-of-clinical-parameters-on-strength-of-reattached-tooth-fragment-in-anterior-teeth-systematic-review-and-meta-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80832.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">179</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">541</span> Fabrication of Optical Tissue Phantoms Simulating Human Skin and Their Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jihoon%20Park">Jihoon Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Sungkon%20Yu"> Sungkon Yu</a>, <a href="https://publications.waset.org/abstracts/search?q=Byungjo%20Jung"> Byungjo Jung</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Although various optical tissue phantoms (OTPs) simulating human skin have been actively studied, their completeness is unclear because skin tissue has the intricate optical property and complicated structure disturbing the optical simulation. In this study, we designed multilayer OTP mimicking skin structure, and fabricated OTP models simulating skin-blood vessel and skin pigmentation in the skin, which are useful in Biomedical optics filed. The OTPs were characterized with the optical property and the cross-sectional structure, and analyzed by using various optical tools such as a laser speckle imaging system, OCT and a digital microscope to show the practicality. The measured optical property was within 5% error, and the thickness of each layer was uniform within 10% error in micrometer scale. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=blood%20vessel" title="blood vessel">blood vessel</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20tissue%20phantom" title=" optical tissue phantom"> optical tissue phantom</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20property" title=" optical property"> optical property</a>, <a href="https://publications.waset.org/abstracts/search?q=skin%20tissue" title=" skin tissue"> skin tissue</a>, <a href="https://publications.waset.org/abstracts/search?q=pigmentation" title=" pigmentation"> pigmentation</a> </p> <a href="https://publications.waset.org/abstracts/68389/fabrication-of-optical-tissue-phantoms-simulating-human-skin-and-their-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68389.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">540</span> The Quantitative Optical Modulation of Dopamine Receptor-Mediated Endocytosis Using an Optogenetic System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Qiaoyue%20Kuang">Qiaoyue Kuang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Li"> Yang Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Mizuki%20Endo"> Mizuki Endo</a>, <a href="https://publications.waset.org/abstracts/search?q=Takeaki%20Ozawa"> Takeaki Ozawa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> G protein-coupled receptors (GPCR) are the largest family of receptor proteins that detect molecules outside the cell and activate cellular responses. Of the GPCRs, dopamine receptors, which recognize extracellular dopamine, are essential to mammals due to their roles in numerous physiological events, including autonomic movement, hormonal regulation, emotions, and the reward system in the brain. To precisely understand the physiological roles of dopamine receptors, it is important to spatiotemporally control the signaling mediated by dopamine receptors, which is strongly dependent on their surface expression. Conventionally, chemical-induced interactions were applied to trigger the endocytosis of cell surface receptors. However, these methods were subjected to diffusion and therefore lacked temporal and special precision. To further understand the receptor-mediated signaling and to control the plasma membrane expression of receptors, an optogenetic tool called E-fragment was developed. The C-terminus of a light-sensitive photosensory protein cyptochrome2 (CRY2) was attached to β-Arrestin, and the E-fragment was generated by fusing the C-terminal peptide of vasopressin receptor (V2R) to CRY2’s binding partner protein CIB. The CRY2-CIB heterodimerization triggered by blue light stimulation brings β-Arrestin to the vicinity of membrane receptors and results in receptor endocytosis. In this study, the E-fragment system was applied to dopamine receptors 1 and 2 (DRD1 and DRD2) to control dopamine signaling. First, confocal fluorescence microscope observation qualitatively confirmed the light-induced endocytosis of E-fragment fused receptors. Second, NanoBiT bioluminescence assay verified quantitatively that the surface amount of E-fragment labeled receptors decreased after light treatment. Finally, GloSensor bioluminescence assay results suggested that the E-fragment-dependent receptor light-induced endocytosis decreased cAMP production in DRD1 signaling and attenuated the inhibition effect of DRD2 on cAMP production. The developed optogenetic tool was able to induce receptor endocytosis by external light, providing opportunities to further understand numerous physiological activities by controlling receptor-mediated signaling spatiotemporally. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dopamine%20receptors" title="dopamine receptors">dopamine receptors</a>, <a href="https://publications.waset.org/abstracts/search?q=endocytosis" title=" endocytosis"> endocytosis</a>, <a href="https://publications.waset.org/abstracts/search?q=G%20protein-coupled%20receptors" title=" G protein-coupled receptors"> G protein-coupled receptors</a>, <a href="https://publications.waset.org/abstracts/search?q=optogenetics" title=" optogenetics"> optogenetics</a> </p> <a href="https://publications.waset.org/abstracts/154002/the-quantitative-optical-modulation-of-dopamine-receptor-mediated-endocytosis-using-an-optogenetic-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154002.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">102</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">539</span> Evaluation of Zr/NH₄ClO₄ and Zr/KClO₄ Compositions for Development of Igniter for Ammonium Perchlorate and Hydroxyl-Terminated Polybutadiene Based Base Bleed System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amir%20Mukhtar">Amir Mukhtar</a>, <a href="https://publications.waset.org/abstracts/search?q=Habib%20Nasir"> Habib Nasir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> To achieve an enhanced range of large calibre artillery a base bleed unit equipped with ammonium perchlorate and hydroxyl-terminated polybutadiene (AP/HTPB) based composite propellant grain is installed at the bottom of a projectile which produces jet of hot gasses and reduces base drag during flight of the projectile. Upon leaving the muzzle at very high muzzle velocity, due to sudden pressure drop, the propellant grain gets quenched. Therefore, base-bleed unit is equipped with an igniter to ensure ignition as well as reignition of the propellant grain. Pyrotechnic compositions based on Zr/NH₄ClO₄ and Zr/KClO₄ mixtures have been studied for the effect of fuel/oxidizer ratio and oxidizer type on ballistic properties. Calorific values of mixtures were investigated by bomb calorimeter, the average burning rate was measured by fuse wire technique at ambient conditions, and high-pressure closed vessel was used to record pressure-time profile, maximum pressure achieved (Pmax), time to achieve Pmax and differential pressure (dP/dt). It was observed that the 30, 40, 50 and 60 wt.% of Zr has a very significant effect on ballistic properties of mixtures. Compositions with NH₄ClO₄ produced higher values of Pmax, dP/dt and Calorific value as compared to Zr/KClO₄ based mixtures. Composition containing KClO₄ comparatively produced higher burning rate and maximum burning rate was recorded at 8.30 mm/s with 60 wt.% Zr in Zr/KClO₄ pyrotechnic mixture. Zr/KClO₄ with 50 wt. % of Zr was tests fired in igniter assembly by electric initiation method. Igniter assembly was test fired several times and average burning time of 3.5 sec with igniter mass burning rate of 6.85 g/sec was recorded. Igniter was finally fired on static and dynamic level with base bleed unit which gave successful ignition to the base bleed grain and extended range was achieved with 155 mm artillery projectile. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=base%20bleed" title="base bleed">base bleed</a>, <a href="https://publications.waset.org/abstracts/search?q=closed%20vessel" title=" closed vessel"> closed vessel</a>, <a href="https://publications.waset.org/abstracts/search?q=igniter" title=" igniter"> igniter</a>, <a href="https://publications.waset.org/abstracts/search?q=zirconium" title=" zirconium"> zirconium</a> </p> <a href="https://publications.waset.org/abstracts/101276/evaluation-of-zrnh4clo4-and-zrkclo4-compositions-for-development-of-igniter-for-ammonium-perchlorate-and-hydroxyl-terminated-polybutadiene-based-base-bleed-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/101276.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">165</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">538</span> Effect of the Firing Cycle on the Microstructure and Mechanical Properties of High Steel Barrel Fabricated by Forging Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=El%20Oualid%20Mokhnache">El Oualid Mokhnache</a>, <a href="https://publications.waset.org/abstracts/search?q=Noureddine%20Ramdani"> Noureddine Ramdani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The choice of gun barrel materials is crucial to ensure the maximum high rate of fire. The high rate of fire causes wear-out damage and shuts off mechanical properties (hardness, strength, wear resistance, etc.) and ballistic properties (bullet speed, dispersion and precision, longevity of barrel, etc). To overcome these kinds of problems, a deep understanding of the effect of the firing cycle on the mechanical and ballistic properties of the barrel is regarded as crucial to improving its characteristics. In the present work, a real experimental test of firing by using a high steel barrel with 7.62x39 ammunition was carried. Microstructural observations by using SEM were investigated. Hardness evolution through the barrel of both barrels labeled as reference barrels and as fired barrels were compared and discussed. Ballistic properties during the firing test, including speed of projectile and precision dispersion, are revealed and discussed as well. The aim of the present communication is about to discuss the relationship between pressure distribution versus mechanical properties through the wall barrel. Ballistic properties, including speed of the projectile, dispersion, and precision results during the shooting process, were investigated. Microstructure observations of the as-rifled barrel in comparison with the as-reference barrel were performed as well. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=barrel" title="barrel">barrel</a>, <a href="https://publications.waset.org/abstracts/search?q=ballistic" title=" ballistic"> ballistic</a>, <a href="https://publications.waset.org/abstracts/search?q=pressure" title=" pressure"> pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure%20evolution" title=" microstructure evolution"> microstructure evolution</a>, <a href="https://publications.waset.org/abstracts/search?q=hardness" title=" hardness"> hardness</a> </p> <a href="https://publications.waset.org/abstracts/179066/effect-of-the-firing-cycle-on-the-microstructure-and-mechanical-properties-of-high-steel-barrel-fabricated-by-forging-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/179066.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">75</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">537</span> MHC Class II DRB1 Gene Polymorphism in Lori Sheep Breed</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shahram%20Nanekarani">Shahram Nanekarani</a>, <a href="https://publications.waset.org/abstracts/search?q=Majid%20Goodarzi"> Majid Goodarzi</a>, <a href="https://publications.waset.org/abstracts/search?q=Majid%20Khosravi"> Majid Khosravi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study aimed at analyzing of ovine major histocompatibility complex class II (Ovar II) DRB1 gene second exon in Lori Sheep breed. The MHC plays a central role in the control of disease resistance and immunological response. Genomic DNA from blood samples of 124 sheep was extracted and a 296 bp MHC exon 2 fragment was amplified using polymerase chain reaction. PCR products were characterized by the restriction fragment length polymorphism technique using Hin1I restriction enzyme. The PCRRFLP patterns showed three genotypes, AA, AB and BB with frequency of 0.282, 0.573 and 0.145, respectively. There was no significant (P > 0.05) deviation from Hardy–Weinberg equilibrium for this locus in this population. The results of the present study indicate that exon 2 of the Ovar-DRB1 gene is highly polymorphic in Lori sheep and could be considered as an important marker assisted selection, for improvement of immunity in sheep. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=MHC-DRB1%20gene" title="MHC-DRB1 gene">MHC-DRB1 gene</a>, <a href="https://publications.waset.org/abstracts/search?q=polymorphism" title=" polymorphism"> polymorphism</a>, <a href="https://publications.waset.org/abstracts/search?q=PCR-RFLP" title=" PCR-RFLP"> PCR-RFLP</a>, <a href="https://publications.waset.org/abstracts/search?q=lori%20sheep" title=" lori sheep"> lori sheep</a> </p> <a href="https://publications.waset.org/abstracts/46341/mhc-class-ii-drb1-gene-polymorphism-in-lori-sheep-breed" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46341.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">420</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">536</span> The Injection of a Freshly Manufactured Hyaluronan Fragment Promotes Healing of Chronic Wounds: A Clinical Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dylan%20Treger">Dylan Treger</a>, <a href="https://publications.waset.org/abstracts/search?q=Lujia%20Zhang"> Lujia Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaoxiao%20Jia"> Xiaoxiao Jia</a>, <a href="https://publications.waset.org/abstracts/search?q=Jessica%20H.%20Hui"> Jessica H. Hui</a>, <a href="https://publications.waset.org/abstracts/search?q=Munkh-Amgalan%20Gantumur"> Munkh-Amgalan Gantumur</a>, <a href="https://publications.waset.org/abstracts/search?q=Mizhou%20Hui"> Mizhou Hui</a>, <a href="https://publications.waset.org/abstracts/search?q=Li%20Liu"> Li Liu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hyaluronic acid (HA) is involved in wound healing via inflammation, granulation, and re-epithelialization mechanisms. The poor physical properties of natural high-molecular-weight polymers limit their direct use in the medical field. In this clinical study, we investigated whether the local injection of a tissue-permeable 35 kDa HA fragment (HA35) could favor the healing process in patients with chronic wounds accompanied by neuropathic pain. The HA35 fragments were freshly manufactured by degradation of high-molecular-weight HA with bovine testis-derived hyaluronidase PH20. Twenty patients in this study had nonhealing wounds and wound-related pain for more than 3 months. Freshly produced HA35 was locally injected into healthy skin immediately surrounding chronic wounds once a day for 10 days. Wound-associated pain and the degree of wound healing were evaluated. The injection of HA35 relieved the pain associated with chronic wounds in 24 hours. HA35 treatment significantly promoted the healing of chronic wounds, including expanded fresh granulation tissue on the wounds; reduced darkness or redness, dryness, and damaged areas on the surface of the skin surrounding the wounds; and decreased the size of the wound area. It can be concluded that the topical injection of tissue-permeable HA35 around chronic wounds has great potential to promote wound healing. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=35%20kDa%20hyaluronan%20fragment%20HA35" title="35 kDa hyaluronan fragment HA35">35 kDa hyaluronan fragment HA35</a>, <a href="https://publications.waset.org/abstracts/search?q=chronic%20wound" title=" chronic wound"> chronic wound</a>, <a href="https://publications.waset.org/abstracts/search?q=wound%20healing" title=" wound healing"> wound healing</a>, <a href="https://publications.waset.org/abstracts/search?q=tissue%20permeability" title=" tissue permeability"> tissue permeability</a> </p> <a href="https://publications.waset.org/abstracts/175416/the-injection-of-a-freshly-manufactured-hyaluronan-fragment-promotes-healing-of-chronic-wounds-a-clinical-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/175416.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">166</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">535</span> The Characteristics of the Fragments from Cylindrical Casing with One of End Caps Fully Constrained</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yueguang%20Gao">Yueguang Gao</a>, <a href="https://publications.waset.org/abstracts/search?q=Qi%20Huang"> Qi Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Shunshan%20Feng"> Shunshan Feng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to study the process and characteristic of the fragments in the warhead with one end cap under full constraint condition, we established a cylindrical casing with two end caps which one of which was fully constrained using the simulation analysis. The result showed that the fragmentation of cylindrical casing with one end full constrained has its own characteristic. The Mach stem was generated when the detonation wave propagated to the fully constrained end cap under the condition of one end detonation, working on unreactive explosives and causing the nearby fragment subjected to nearly 2.5 times the normal pressure to obtain a higher speed. The cylindrical casing first ruptured at the contact surface with the fully constrained end, and then at the end cover of the initiating end, and then the rupture extends to the whole cylindrical casing. The detonation products started to leak out from the rupture. Driving fragments to fly and forming two dense flying areas. The analysis of this paper can provide a reference for the optimal design of this kind of warhead. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fragment" title="fragment">fragment</a>, <a href="https://publications.waset.org/abstracts/search?q=cylindrical%20casing" title=" cylindrical casing"> cylindrical casing</a>, <a href="https://publications.waset.org/abstracts/search?q=detonation%20waves" title=" detonation waves"> detonation waves</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20simulation" title=" numerical simulation"> numerical simulation</a> </p> <a href="https://publications.waset.org/abstracts/133630/the-characteristics-of-the-fragments-from-cylindrical-casing-with-one-of-end-caps-fully-constrained" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/133630.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">124</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">534</span> An Criterion to Minimize FE Mesh-Dependency in Concrete Plate Subjected to Impact Loading</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kwak">Kwak</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyo-Gyung"> Hyo-Gyung</a>, <a href="https://publications.waset.org/abstracts/search?q=Gang"> Gang</a>, <a href="https://publications.waset.org/abstracts/search?q=Han%20Gul"> Han Gul</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the context of an increasing need for reliability and safety in concrete structures under blast and impact loading condition, the behavior of concrete under high strain rate condition has been an important issue. Since concrete subjected to impact loading associated with high strain rate shows quite different material behavior from that in the static state, several material models are proposed and used to describe the high strain rate behavior under blast and impact loading. In the process of modelling, in advance, mesh dependency in the used finite element (FE) is the key problem because simulation results under high strain-rate condition are quite sensitive to applied FE mesh size. It means that the accuracy of simulation results may deeply be dependent on FE mesh size in simulations. This paper introduces an improved criterion which can minimize the mesh-dependency of simulation results on the basis of the fracture energy concept, and HJC (Holmquist Johnson Cook), CSC (Continuous Surface Cap) and K&C (Karagozian & Case) models are examined to trace their relative sensitivity to the used FE mesh size. To coincide with the purpose of the penetration test with a concrete plate under a projectile (bullet), the residual velocities of projectile after penetration are compared. The correlation studies between analytical results and the parametric studies associated with them show that the variation of residual velocity with the used FE mesh size is quite reduced by applying a unique failure strain value determined according to the proposed criterion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=high%20strain%20rate%20concrete" title="high strain rate concrete">high strain rate concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=penetration%20simulation" title=" penetration simulation"> penetration simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=failure%20strain" title=" failure strain"> failure strain</a>, <a href="https://publications.waset.org/abstracts/search?q=mesh-dependency" title=" mesh-dependency"> mesh-dependency</a>, <a href="https://publications.waset.org/abstracts/search?q=fracture%20energy" title=" fracture energy"> fracture energy</a> </p> <a href="https://publications.waset.org/abstracts/18943/an-criterion-to-minimize-fe-mesh-dependency-in-concrete-plate-subjected-to-impact-loading" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18943.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">520</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">533</span> Hybrid Direct Numerical Simulation and Large Eddy Simulating Wall Models Approach for the Analysis of Turbulence Entropy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samuel%20Ahamefula">Samuel Ahamefula</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Turbulent motion is a highly nonlinear and complex phenomenon, and its modelling is still very challenging. In this study, we developed a hybrid computational approach to accurately simulate fluid turbulence phenomenon. The focus is coupling and transitioning between Direct Numerical Simulation (DNS) and Large Eddy Simulating Wall Models (LES-WM) regions. In the framework, high-order fidelity fluid dynamical methods are utilized to simulate the unsteady compressible Navier-Stokes equations in the Eulerian format on the unstructured moving grids. The coupling and transitioning of DNS and LES-WM are conducted through the linearly staggered Dirichlet-Neumann coupling scheme. The high-fidelity framework is verified and validated based on namely, DNS ability for capture full range of turbulent scales, giving accurate results and LES-WM efficiency in simulating near-wall turbulent boundary layer by using wall models. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=computational%20methods" title="computational methods">computational methods</a>, <a href="https://publications.waset.org/abstracts/search?q=turbulence%20modelling" title=" turbulence modelling"> turbulence modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=turbulence%20entropy" title=" turbulence entropy"> turbulence entropy</a>, <a href="https://publications.waset.org/abstracts/search?q=navier-stokes%20equations" title=" navier-stokes equations"> navier-stokes equations</a> </p> <a href="https://publications.waset.org/abstracts/167835/hybrid-direct-numerical-simulation-and-large-eddy-simulating-wall-models-approach-for-the-analysis-of-turbulence-entropy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167835.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">100</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">532</span> Polymorphic Positions, Haplotypes, and Mutations Detected In The Mitochonderial DNA Coding Region By Sanger Sequence Technique </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Imad%20H.%20Hameed">Imad H. Hameed</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20A.%20Jebor"> Mohammad A. Jebor</a>, <a href="https://publications.waset.org/abstracts/search?q=Ammera%20J.%20Omer"> Ammera J. Omer </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this research is to study the mitochonderial coding region by using the Sanger sequencing technique and establish the degree of variation characteristic of a fragment. FTA® Technology (FTA™ paper DNA extraction) utilized to extract DNA. Portion of coding region encompassing positions 11719 –12384 amplified in accordance with the Anderson reference sequence. PCR products purified by EZ-10 spin column then sequenced and Detected by using the ABI 3730xL DNA Analyzer. Five new polymorphic positions 11741, 11756, 11878, 11887 and 12133 are described may be suitable sources for identification purpose in future. The calculated value D= 0.95 and RMP=0.048 of the genetic diversity should be understood as high in the context of coding function of the analysed DNA fragment. The relatively high gene diversity and a relatively low random match probability were observed in Iraq population. The obtained data can be used to identify the variable nucleotide positions characterized by frequent occurrence which is most promising for various identifications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coding%20region" title="coding region">coding region</a>, <a href="https://publications.waset.org/abstracts/search?q=Iraq" title=" Iraq"> Iraq</a>, <a href="https://publications.waset.org/abstracts/search?q=mitochondrial%20DNA" title=" mitochondrial DNA"> mitochondrial DNA</a>, <a href="https://publications.waset.org/abstracts/search?q=polymorphic%20positions" title=" polymorphic positions"> polymorphic positions</a>, <a href="https://publications.waset.org/abstracts/search?q=sanger%20technique" title=" sanger technique"> sanger technique</a> </p> <a href="https://publications.waset.org/abstracts/2065/polymorphic-positions-haplotypes-and-mutations-detected-in-the-mitochonderial-dna-coding-region-by-sanger-sequence-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2065.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">437</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">531</span> A Network-Theorical Perspective on Music Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alberto%20Alcal%C3%A1-Alvarez">Alberto Alcalá-Alvarez</a>, <a href="https://publications.waset.org/abstracts/search?q=Pablo%20Padilla-Longoria"> Pablo Padilla-Longoria</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present paper describes a framework for constructing mathematical networks encoding relevant musical information from a music score for structural analysis. These graphs englobe statistical information about music elements such as notes, chords, rhythms, intervals, etc., and the relations among them, and so become helpful in visualizing and understanding important stylistic features of a music fragment. In order to build such networks, musical data is parsed out of a digital symbolic music file. This data undergoes different analytical procedures from Graph Theory, such as measuring the centrality of nodes, community detection, and entropy calculation. The resulting networks reflect important structural characteristics of the fragment in question: predominant elements, connectivity between them, and complexity of the information contained in it. Music pieces in different styles are analyzed, and the results are contrasted with the traditional analysis outcome in order to show the consistency and potential utility of this method for music analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=computational%20musicology" title="computational musicology">computational musicology</a>, <a href="https://publications.waset.org/abstracts/search?q=mathematical%20music%20modelling" title=" mathematical music modelling"> mathematical music modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=music%20analysis" title=" music analysis"> music analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=style%20classification" title=" style classification"> style classification</a> </p> <a href="https://publications.waset.org/abstracts/163401/a-network-theorical-perspective-on-music-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163401.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">102</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">530</span> Engineering Design of a Chemical Launcher: An Interdisciplinary Design Activity </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mei%20Xuan%20Tan">Mei Xuan Tan</a>, <a href="https://publications.waset.org/abstracts/search?q=Gim-Yang%20Maggie%20Pee"> Gim-Yang Maggie Pee</a>, <a href="https://publications.waset.org/abstracts/search?q=Mei%20Chee%20%20Tan"> Mei Chee Tan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Academic performance, in the form of scoring high grades in enrolled subjects, is not the only significant trait in achieving success. Engineering graduates with experience in working on hands-on projects in a team setting are highly sought after in industry upon graduation. Such projects are typically real world problems that require the integration and application of knowledge and skills from several disciplines. In a traditional university setting, subjects are taught in a silo manner with no cross participation from other departments or disciplines. This may lead to knowledge compartmentalization and students are unable to understand and connect the relevance and applicability of the subject. University instructors thus see this integration across disciplines as a challenging task as they aim to better prepare students in understanding and solving problems for work or future studies. To improve students’ academic performance and to cultivate various skills such as critical thinking, there has been a gradual uptake in the use of an active learning approach in introductory science and engineering courses, where lecturing is traditionally the main mode of instruction. This study aims to discuss the implementation and experience of a hands-on, interdisciplinary project that involves all the four core subjects taught during the term at the Singapore University of Technology Design (SUTD). At SUTD, an interdisciplinary design activity, named 2D, is integrated into the curriculum to help students reinforce the concepts learnt. A student enrolled in SUTD experiences his or her first 2D in Term 1. This activity. which spans over one week in Week 10 of Term 1, highlights the application of chemistry, physics, mathematics, humanities, arts and social sciences (HASS) in designing an engineering product solution. The activity theme for Term 1 2D revolved around “work and play”. Students, in teams of 4 or 5, used a scaled-down model of a chemical launcher to launch a projectile across the room. It involved the use of a small chemical combustion reaction between ethanol (a highly volatile fuel) and oxygen. This reaction generated a sudden and large increase in gas pressure built up in a closed chamber, resulting in rapid gas expansion and ejection of the projectile out of the launcher. Students discussed and explored the meaning of play in their lives in HASS class while the engineering aspects of a combustion system to launch an object using underlying principles of energy conversion and projectile motion were revisited during the chemistry and physics classes, respectively. Numerical solutions on the distance travelled by the projectile launched by the chemical launcher, taking into account drag forces, was developed during the mathematics classes. At the end of the activity, students developed skills in report writing, data collection and analysis. Specific to this 2D activity, students gained an understanding and appreciation on the application and interdisciplinary nature of science, engineering and HASS. More importantly, students were exposed to design and problem solving, where human interaction and discussion are important yet challenging in a team setting. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=active%20learning" title="active learning">active learning</a>, <a href="https://publications.waset.org/abstracts/search?q=collaborative%20learning" title=" collaborative learning"> collaborative learning</a>, <a href="https://publications.waset.org/abstracts/search?q=first%20year%20undergraduate" title=" first year undergraduate"> first year undergraduate</a>, <a href="https://publications.waset.org/abstracts/search?q=interdisciplinary" title=" interdisciplinary"> interdisciplinary</a>, <a href="https://publications.waset.org/abstracts/search?q=STEAM" title=" STEAM"> STEAM</a> </p> <a href="https://publications.waset.org/abstracts/128982/engineering-design-of-a-chemical-launcher-an-interdisciplinary-design-activity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128982.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">122</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">529</span> PMEL Marker Identification of Dark and Light Feather Colours in Local Canary</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mudawamah%20Mudawamah">Mudawamah Mudawamah</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Z.%20Fadli"> Muhammad Z. Fadli</a>, <a href="https://publications.waset.org/abstracts/search?q=Gatot%20Ciptadi"> Gatot Ciptadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Aulanni%E2%80%99am"> Aulanni’am</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Canary breeders have spread throughout Indonesian regions for the low-middle society and become an income source for them. The interesting phenomenon of the canary market is the feather colours become one of determining factor for the price. The advantages of this research were contributed to the molecular database as a base of selection and mating for the Indonesia canary breeder. The research method was experiment with the genome obtained from canary blood isolation. The genome did the PCR amplification with PMEL marker followed by sequencing. Canaries were used 24 heads of light and dark colour feathers. Research data analyses used BioEdit and Network 4.6.0.0 software. The results showed that all samples were amplification with PMEL gene with 500 bp fragment length. In base sequence of 40 was found Cytosine(C) in the light colour canaries, while the dark colour canaries was obtained Thymine (T) in same base sequence. Sequence results had 286-415 bp fragment and 10 haplotypes. The conclusions were the PMEL gene (gene of white pigment) was likely to be used PMEL gene to detect molecular genetic variation of dark and light colour feather. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=canary" title="canary">canary</a>, <a href="https://publications.waset.org/abstracts/search?q=haplotype" title=" haplotype"> haplotype</a>, <a href="https://publications.waset.org/abstracts/search?q=PMEL" title=" PMEL"> PMEL</a>, <a href="https://publications.waset.org/abstracts/search?q=sequence" title=" sequence"> sequence</a> </p> <a href="https://publications.waset.org/abstracts/39620/pmel-marker-identification-of-dark-and-light-feather-colours-in-local-canary" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39620.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">237</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">528</span> Packet Fragmentation Caused by Encryption and Using It as a Security Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Said%20Rabah%20Azzam">Said Rabah Azzam</a>, <a href="https://publications.waset.org/abstracts/search?q=Andrew%20Graham"> Andrew Graham</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fragmentation of packets caused by encryption applied on the network layer of the IOS model in Internet Protocol version 4 (IPv4) networks as well as the possibility of using fragmentation and Access Control Lists (ACLs) as a method of restricting network access to certain hosts or areas of a network.Using default settings, fragmentation is expected to occur and each fragment to be reassembled at the other end. If this does not occur then a high number of ICMP messages should be generated back towards the source host indicating that the packet is too large and that it needs to be made smaller. This result is also expected when the MTU is changed for certain links between devices.When using ACLs and packet fragments to restrict access to hosts or network segments it is possible that ACLs cannot be set up in this way. If ACLs cannot be setup to allow only fragments then it is a limitation of the hardware’s firmware holding back this particular method. If the ACL on the restricted switch can be set up in such a way to allow only fragments then a connection that forces packets to fragment should be allowed to pass through the ACL. This should then make a network connection to the destination machine allowing data to be sent to and from the destination machine. ICMP messages from the restricted access switch and host should also be blocked from being sent back across the link which will be shown in an SSH session into the switch. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fragmentation" title="fragmentation">fragmentation</a>, <a href="https://publications.waset.org/abstracts/search?q=encryption" title=" encryption"> encryption</a>, <a href="https://publications.waset.org/abstracts/search?q=security" title=" security"> security</a>, <a href="https://publications.waset.org/abstracts/search?q=switch" title=" switch "> switch </a> </p> <a href="https://publications.waset.org/abstracts/30056/packet-fragmentation-caused-by-encryption-and-using-it-as-a-security-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30056.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">336</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">527</span> Arthroscopic Fixation of Posterior Cruciate Ligament Avulsion Fracture through Posterior Trans Septal Portal Using Button Fixation Device: Mini Tight Rope</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ratnakar%20Rao">Ratnakar Rao</a>, <a href="https://publications.waset.org/abstracts/search?q=Subair%20Khan"> Subair Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=Hari%20Haran"> Hari Haran </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Posterior cruciate ligament (PCL) avulsion fractures is a rare condition and commonly mismanaged.Surgical reattachment has been shown to produce better result compared with conservative management.Only few techniques are reported in arthroscopic fixation of PCL Avulsion Fracture and they are complex.We describe a new technique in fixation of the PCL Avulsion fracture through a posterior trans septal portal using button fixation device (Mini Tight Rope). Eighteen patients with an isolated posterior cruciate ligament avulsion fracture were operated under arthroscopy. Standard Antero Medial Portal and Antero Lateral portals made and additional Postero Medial and Postero Lateral portals made and trans Septal portal established. Avulsion fracture identified, elevated, prepared. Reduction achieved using PCL Tibial guide (Arthrex) and fixation was achieved using Mini Tight Rope,Arthrex (2 buttons with a suture). Reduction confirmed using probe and Image intensifier. Postoperative assessment made clinically and radiologically. 15 patients had good to excellent results with no posterior sag or instability. The range of motion was normal. No complications were recorded per operatively. 2 patients had communition of the fragment while drilling, for one patient it was managed by suturing technique and the second patient PCL Reconstruction was done. One patient had persistent instability with poor outcome. Establishing trans septal portal helps in better visualization of the posterior compartment of the knee. Assessment of the bony fragment, preparation 0f the bone bed andit protects from injury to posterior neurovascular structures. Fixation using the button with suture (Mini Tight Rope) is stable and easily reproducible for PCL Avulsion fracture with single large fragment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=PCL%20avulsion" title="PCL avulsion">PCL avulsion</a>, <a href="https://publications.waset.org/abstracts/search?q=arthroscopy" title=" arthroscopy"> arthroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=transeptal" title=" transeptal"> transeptal</a>, <a href="https://publications.waset.org/abstracts/search?q=minitight%20rope%20technique" title=" minitight rope technique"> minitight rope technique</a> </p> <a href="https://publications.waset.org/abstracts/16166/arthroscopic-fixation-of-posterior-cruciate-ligament-avulsion-fracture-through-posterior-trans-septal-portal-using-button-fixation-device-mini-tight-rope" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16166.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">258</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">526</span> Molecular Detection and Characterization of Shiga Toxogenic Escherichia coli Associated with Dairy Product</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Al-Hazmi">Mohamed Al-Hazmi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdullah%20Al-Arfaj"> Abdullah Al-Arfaj</a>, <a href="https://publications.waset.org/abstracts/search?q=Moussa%20Ihab"> Moussa Ihab</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Raw, unpasteurized milk can carry dangerous bacteria such as Salmonella, E. coli, and Listeria, which are responsible for causing numerous foodborne illnesses. The objective of this study was molecular characterization of shiga toxogenic E. coli in raw milk collected from different Egyptian governorates by multiplex PCR. During the period of 25th May to 25th October 2012, a total of 320 bulk-tank milk samples were collected from 10 cow farms located in different Egyptian governorates. Bacteriological examination of milk samples revealed the presence of E. coli organisms in 65 samples (20.3%), serotyping of the E. coli isolates revealed, 35 strains (10.94%) O111, 15 strains (4.69%) O157: H7, 10 strains (3.13%) O128 and 5 strains (1.56%) O119. Multiplex PCR for detection of shiga toxin type 2 and intimin genes revealed positive amplification of 255 bp fragment of shiga toxin type 2 gene and 384 bp fragment of intimin gene from all E. coli serovar O157: H7, while from serovar O111 were 25 (71.43%), 20 (57.14%) and from serovar O128 were 6 (60%), 8 (80%), respectively. The results of multiplex PCR assay are useful for identification of STEC possessing the eaeA and stx2 genes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=raw%20milk" title="raw milk">raw milk</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20coli" title=" E. coli"> E. coli</a>, <a href="https://publications.waset.org/abstracts/search?q=multiplex%20PCR" title=" multiplex PCR"> multiplex PCR</a>, <a href="https://publications.waset.org/abstracts/search?q=Shiga%20toxin%20type%202" title=" Shiga toxin type 2"> Shiga toxin type 2</a>, <a href="https://publications.waset.org/abstracts/search?q=intimin%20gene" title=" intimin gene"> intimin gene</a> </p> <a href="https://publications.waset.org/abstracts/2617/molecular-detection-and-characterization-of-shiga-toxogenic-escherichia-coli-associated-with-dairy-product" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2617.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">306</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">525</span> Identification of Anaplasma Species in Cattle of Khouzestan Province from Iran by PCR</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ali%20Bagherpour">Ali Bagherpour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this study was to determinate the variety of Anaplasma species among cattle of Khuzestan province, Iran. From April 2013 to June 2013, a total of 200 blood samples were collected via the jugular vein from healthy cattle (100), randomly. The extracted DNA from blood cells were amplified by Anaplasma-all primers, which amplify an approximately 1468bp DNA fragment from region of 16S rRNA gene from various members of the genus Anaplasma. For raising the test sensivity, the PCR products were amplified with the primers, which were designed from the region flanked by the first primers. The amplified nested PCR product had an expected PCR product with 345 nucleotides in length. 44 out of 100 cattle blood samples were Anaplasma spp. positive by first PCR and nested PCR. All cattle positive samples were further analyzed for the presence of A. centrale, A. bovis and A. phagocytophilum by specific nested PCR. A.phagocytophilum was identified by specific nested PCR in 3% of cattle blood samples. The extracted DNA from positive Anaplasma spp. samples were amplified by Anaplasma marginale/ovis specific primers, which amplify an approximately 866bp DNA fragment from region of msp4 gene. 41 out of 100 cattle blood samples (41%) were positive for Anaplasma marginale and Anaplasma ovis, respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Iran" title="Iran">Iran</a>, <a href="https://publications.waset.org/abstracts/search?q=Khuzestan" title=" Khuzestan"> Khuzestan</a>, <a href="https://publications.waset.org/abstracts/search?q=Anaplasma%20species" title=" Anaplasma species"> Anaplasma species</a>, <a href="https://publications.waset.org/abstracts/search?q=Cattle" title=" Cattle"> Cattle</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20marginale" title=" A. marginale"> A. marginale</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20ovis" title=" A. ovis"> A. ovis</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20phagocytophilum" title=" A. phagocytophilum"> A. phagocytophilum</a>, <a href="https://publications.waset.org/abstracts/search?q=PCR" title=" PCR"> PCR</a> </p> <a href="https://publications.waset.org/abstracts/27750/identification-of-anaplasma-species-in-cattle-of-khouzestan-province-from-iran-by-pcr" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27750.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">501</span> </span> </div> </div> <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=fragment%20simulating%20projectile&page=2">2</a></li> <li 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