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based</title> <meta name="description" content="Search results for: diaphragm based"> <meta name="keywords" content="diaphragm based"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="diaphragm based"> <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> 28240</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: diaphragm based</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28240</span> Design and Simulation High Sensitive MEMS Capacitive Pressure Sensor with Small Size for Glaucoma Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yadollah%20Hezarjaribi">Yadollah Hezarjaribi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mahdie%20Yari%20Esboi"> Mahdie Yari Esboi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a novel MEMS capacitive pressure sensor with small size and high sensitivity is presented. This sensor has the separated clamped square diaphragm and the movable plate. The diaphragm material is polysilicon. The movable and fixed plates and mechanical coupling are gold. The substrate and diaphragm are pyrex glass and polysilicon, respectively. In capacitive sensor the sensitivity is proportional to deflection and capacitance changes with pressure for this reason with this design is improved the capacitance and sensitivity with small size. This sensor is designed for low pressure between 0-60 mmHg that is used for medical application such as treatment of an incurable disease called glaucoma. The size of this sensor is 350×350 µm2 and the thickness of the diaphragm is 2µm with 1μ air gap. This structure is designed by intellisuite software. In this MEMS capacitive pressure sensor the sensor sensitivity, diaphragm mechanical sensitivity for polysilicon diaphragm are 0.0469Pf/mmHg, 0.011 μm/mmHg, respectively. According to the simulating results for low pressure, the structure with polysilicon diaphragm has more change of the displacement and capacitance, this leads to high sensitivity than other diaphragms. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=glaucoma" title="glaucoma">glaucoma</a>, <a href="https://publications.waset.org/abstracts/search?q=MEMS%20capacitive%20pressure%20sensor" title=" MEMS capacitive pressure sensor"> MEMS capacitive pressure sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=square%20clamped%20diaphragm" title=" square clamped diaphragm"> square clamped diaphragm</a>, <a href="https://publications.waset.org/abstracts/search?q=polysilicon" title=" polysilicon"> polysilicon</a> </p> <a href="https://publications.waset.org/abstracts/46427/design-and-simulation-high-sensitive-mems-capacitive-pressure-sensor-with-small-size-for-glaucoma-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46427.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">319</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">28239</span> Modeling of Microelectromechanical Systems Diaphragm Based Acoustic Sensor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vasudha%20Hegde">Vasudha Hegde</a>, <a href="https://publications.waset.org/abstracts/search?q=Narendra%20Chaulagain"> Narendra Chaulagain</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20M.%20Ravikumar"> H. M. Ravikumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Sonu%20Mishra"> Sonu Mishra</a>, <a href="https://publications.waset.org/abstracts/search?q=Siva%20Yellampalli"> Siva Yellampalli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Acoustic sensors are extensively used in recent days not only for sensing and condition monitoring applications but also for small scale energy harvesting applications to power wireless sensor networks (WSN) due to their inherent advantages. The natural frequency of the structure plays a major role in energy harvesting applications since the sensor key element has to operate at resonant frequency. In this paper, circular diaphragm based MEMS acoustic sensor is modelled by Lumped Element Model (LEM) and the natural frequency is compared with the simulated model using Finite Element Method (FEM) tool COMSOL Multiphysics. The sensor has the circular diaphragm of 3000 µm radius and thickness of 30 µm to withstand the high SPL (Sound Pressure Level) and also to withstand the various fabrication steps. A Piezoelectric ZnO layer of thickness of 1 µm sandwiched between two aluminium electrodes of thickness 0.5 µm and is coated on the diaphragm. Further, a channel with radius 3000 µm radius and length 270 µm is connected at the bottom of the diaphragm. The natural frequency of the structure by LEM method is approximately 16.6 kHz which is closely matching with that of simulated structure with suitable approximations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acoustic%20sensor" title="acoustic sensor">acoustic sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=diaphragm%20based" title=" diaphragm based"> diaphragm based</a>, <a href="https://publications.waset.org/abstracts/search?q=lumped%20element%20modeling%20%28LEM%29" title=" lumped element modeling (LEM)"> lumped element modeling (LEM)</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20frequency" title=" natural frequency"> natural frequency</a>, <a href="https://publications.waset.org/abstracts/search?q=piezoelectric" title=" piezoelectric"> piezoelectric</a> </p> <a href="https://publications.waset.org/abstracts/87746/modeling-of-microelectromechanical-systems-diaphragm-based-acoustic-sensor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87746.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">442</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">28238</span> Impact of Out-of-Plane Stiffness of the Diaphragm on Deflection of Wood Light-Frame Shear Walls</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20M.%20Bagheri">M. M. Bagheri</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Doudak"> G. Doudak</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Gong"> M. Gong </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The in-plane rigidity of light frame diaphragms has been investigated by researchers due to the importance of this subsystem regarding lateral force distribution between the lateral force resisting system (LFRS). Where research has lacked is in evaluating the impact of out-of-plane raigidity of the diaphragm on the deflection of shear walls. This study aims at investigating the effect of the diaphragm on the behavior of wood light-frame shear walls, in particular its out-of-plane rigidity was simulated by modeling the floors as beam. The out of plane stiffness of the diaphragm was investigated for idealized (infinitely stiff or flexible) as well as “realistic”. The results showed reductions in the shear wall deflection in the magnitude of approximately 80% considering the out of plane rigidity of the diaphragm. It was also concluded that considering conservative estimates of out-of-plane stiffness might lead to a very significant reduction in deflection and that assuming the floor diaphragm to be infinitely rigid out of plan seems to be reasonable. For diaphragms supported on multiple panels, further reduction in the deflection was observed. More work, particularly at the experimental level, is needed to verify the finding obtained in the numerical investigation related to the effect of out of plane diaphragm stiffness. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20analysis" title="finite element analysis">finite element analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=lateral%20deflection" title=" lateral deflection"> lateral deflection</a>, <a href="https://publications.waset.org/abstracts/search?q=out-of-plane%20stiffness%20of%20the%20diaphragm" title=" out-of-plane stiffness of the diaphragm"> out-of-plane stiffness of the diaphragm</a>, <a href="https://publications.waset.org/abstracts/search?q=wood%20light-frame%20shear%20wall" title=" wood light-frame shear wall"> wood light-frame shear wall</a> </p> <a href="https://publications.waset.org/abstracts/106928/impact-of-out-of-plane-stiffness-of-the-diaphragm-on-deflection-of-wood-light-frame-shear-walls" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106928.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">182</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">28237</span> Study on Flexible Diaphragm In-Plane Model of Irregular Multi-Storey Industrial Plant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cheng-Hao%20Jiang">Cheng-Hao Jiang</a>, <a href="https://publications.waset.org/abstracts/search?q=Mu-Xuan%20Tao"> Mu-Xuan Tao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The rigid diaphragm model may cause errors in the calculation of internal forces due to neglecting the in-plane deformation of the diaphragm. This paper thus studies the effects of different diaphragm in-plane models (including in-plane rigid model and in-plane flexible model) on the seismic performance of structures. Taking an actual industrial plant as an example, the seismic performance of the structure is predicted using different floor diaphragm models, and the analysis errors caused by different diaphragm in-plane models including deformation error and internal force error are calculated. Furthermore, the influence of the aspect ratio on the analysis errors is investigated. Finally, the code rationality is evaluated by assessing the analysis errors of the structure models whose floors were determined as rigid according to the code’s criterion. It is found that different floor models may cause great differences in the distribution of structural internal forces, and the current code may underestimate the influence of the floor in-plane effect. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=industrial%20plant" title="industrial plant">industrial plant</a>, <a href="https://publications.waset.org/abstracts/search?q=diaphragm" title=" diaphragm"> diaphragm</a>, <a href="https://publications.waset.org/abstracts/search?q=calculating%20error" title=" calculating error"> calculating error</a>, <a href="https://publications.waset.org/abstracts/search?q=code%20rationality" title=" code rationality"> code rationality</a> </p> <a href="https://publications.waset.org/abstracts/127256/study-on-flexible-diaphragm-in-plane-model-of-irregular-multi-storey-industrial-plant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/127256.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">140</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">28236</span> Deep Excavations with Embedded Retaining Walls - Diaphragm Walls</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sowmiyaa%20V.%20S.">Sowmiyaa V. S.</a>, <a href="https://publications.waset.org/abstracts/search?q=Tiruvengala%20Padma"> Tiruvengala Padma</a>, <a href="https://publications.waset.org/abstracts/search?q=Dhanasekaran%20B."> Dhanasekaran B.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Due to urbanization, traffic congestion, air pollution and fuel consumption underground metros are constructed in urban cities nowadays. These metros reduce the commutation time and makes the daily transportation in urban cities hassle free. To construct the underground metros deep excavations are to be carried out. These excavations should be supported by an appropriate earth retaining structures to provide stability and to prevent deformation failures. The failure of deep excavations is catastrophic and hence appropriate caution need to be carried out during design and construction stages. This paper covers the construction aspects, equipment, quality control, design aspects of one of the earth retaining systems the Diaphragm Walls. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=underground%20metros" title="underground metros">underground metros</a>, <a href="https://publications.waset.org/abstracts/search?q=diaphragm%20wall" title=" diaphragm wall"> diaphragm wall</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20control%20of%20diaphragm%20wall" title=" quality control of diaphragm wall"> quality control of diaphragm wall</a>, <a href="https://publications.waset.org/abstracts/search?q=design%20aspects%20of%20diaphragm%20wall" title=" design aspects of diaphragm wall"> design aspects of diaphragm wall</a> </p> <a href="https://publications.waset.org/abstracts/150972/deep-excavations-with-embedded-retaining-walls-diaphragm-walls" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/150972.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">28235</span> Design and Simulation of MEMS-Based Capacitive Pressure Sensors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kirankumar%20B.%20Balavalad">Kirankumar B. Balavalad</a>, <a href="https://publications.waset.org/abstracts/search?q=Bhagyashree%20Mudhol"> Bhagyashree Mudhol</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20G.%20Sheeparamatti"> B. G. Sheeparamatti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> MEMS sensor have gained popularity in automotive, biomedical, and industrial applications. In this paper, the design and simulation of conventional, slotted, and perforated MEMS capacitive pressure sensor is proposed. Polysilicon material is used as diaphragm material that deflects due to applied pressure. Better sensitivity is the main advantage of conventional pressure sensor as compared with other two sensors and perforated pressure sensor achieves large operating pressure range. The proposed MEMS sensor demonstrated with diaphragm length 50um, gap depth 3um is being modelled. The simulation is carried out for different types of MEMS capacitive pressure sensor using COMSOL Multiphysics and Coventor ware. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=MEMS" title="MEMS">MEMS</a>, <a href="https://publications.waset.org/abstracts/search?q=conventional%20pressure%20sensor" title=" conventional pressure sensor"> conventional pressure sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=slotted%20and%20perforated%20diaphragm" title=" slotted and perforated diaphragm"> slotted and perforated diaphragm</a>, <a href="https://publications.waset.org/abstracts/search?q=COMSOL%20multiphysics" title=" COMSOL multiphysics"> COMSOL multiphysics</a>, <a href="https://publications.waset.org/abstracts/search?q=coventor%20ware" title=" coventor ware"> coventor ware</a> </p> <a href="https://publications.waset.org/abstracts/33090/design-and-simulation-of-mems-based-capacitive-pressure-sensors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33090.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">508</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">28234</span> Performance of the Hybrid Loop Heat Pipe</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nandy%20Putra">Nandy Putra</a>, <a href="https://publications.waset.org/abstracts/search?q=Imansyah%20Ibnu%20Hakim"> Imansyah Ibnu Hakim</a>, <a href="https://publications.waset.org/abstracts/search?q=Iwan%20Setyawan"> Iwan Setyawan</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Zayd%20A.I"> Muhammad Zayd A.I</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A two-phase cooling technology of passive system sometimes can no longer meet the cooling needs of an increasingly challenging due to the inherent limitations of the capillary pumping for example in terms of the heat flux that can lead to dry out. In this study, intended to overcome the dry out with the addition of a diaphragm, they pump to accelerate the fluid transportation from the condenser to the evaporator. Diaphragm pump installed on the bypass line. When it did not happen dry out then the hybrid loop heat pipe will be work passively using a capillary pressure of wick. Meanwhile, when necessary, hybrid loop heat pipe will be work actively, using diaphragm pump with temperature control installed on the evaporator. From the results, it can be said that the pump has been successfully overcome dry out and can distribute working fluid from the condenser to the evaporator and reduce the temperature of the evaporator from 143°C to 100°C as a temperature controlled where the pump start actively at set point 100°C. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hybrid" title="hybrid">hybrid</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20pipe" title=" heat pipe"> heat pipe</a>, <a href="https://publications.waset.org/abstracts/search?q=dry%20out" title=" dry out"> dry out</a>, <a href="https://publications.waset.org/abstracts/search?q=assisted" title=" assisted"> assisted</a>, <a href="https://publications.waset.org/abstracts/search?q=pump" title=" pump "> pump </a> </p> <a href="https://publications.waset.org/abstracts/32171/performance-of-the-hybrid-loop-heat-pipe" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32171.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">352</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">28233</span> Conception of Increasing the Efficiency of Excavation Shoring by Prestressing Diaphragm Walls</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mateusz%20Frydrych">Mateusz Frydrych</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The construction of diaphragm walls as excavation shoring as well as part of deep foundations is widely used in geotechnical engineering. Today's design challenges lie in the optimal dimensioning of the cross-section, which is demanded by technological considerations. Also in force is the issue of optimization and sustainable use of construction materials, including reduction of carbon footprint, which is currently a relevant challenge for the construction industry. The author presents the concept of an approach to achieving increased efficiency of diaphragm wall excavation shoring by using structural compression technology. The author proposes to implement prestressed tendons in a non-linear manner in the reinforcement cage. As a result bending moment is reduced, which translates into a reduction in the amount of steel needed in the section, a reduction in displacements, and a reduction in the scratching of the casing, including the achievement of better tightness. This task is rarely seen and has not yet been described in a scientific way in the literature. The author has developed a dynamic numerical model that allows the dimensioning of the cross-section of a prestressed shear wall, as well as the study of casing displacements and cross-sectional forces in any defined computational situation. Numerical software from the Sofistik - open source development environment - was used for the study, and models were validated in Plaxis software . This is an interesting idea that allows for optimizing the execution of construction works and reducing the required resources by using fewer materials and saving time. The author presents the possibilities of a prestressed diaphragm wall, among others, using. The example of a diaphragm wall working as a cantilever at the height of two underground floors without additional strutting or stability protection by using ground anchors. This makes the execution of the work more criminal for the contractor and, as a result, cheaper for the investor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=prestressed%20diaphragm%20wall" title="prestressed diaphragm wall">prestressed diaphragm wall</a>, <a href="https://publications.waset.org/abstracts/search?q=Plaxis" title=" Plaxis"> Plaxis</a>, <a href="https://publications.waset.org/abstracts/search?q=Sofistik" title=" Sofistik"> Sofistik</a>, <a href="https://publications.waset.org/abstracts/search?q=innovation" title=" innovation"> innovation</a>, <a href="https://publications.waset.org/abstracts/search?q=FEM" title=" FEM"> FEM</a>, <a href="https://publications.waset.org/abstracts/search?q=optimisation" title=" optimisation"> optimisation</a> </p> <a href="https://publications.waset.org/abstracts/177314/conception-of-increasing-the-efficiency-of-excavation-shoring-by-prestressing-diaphragm-walls" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/177314.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">77</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">28232</span> A Case Report on Diaphragm Disease of Small Bowel Following Usage of Non-Steroidal Anti-Inflammatory Drugs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shivani%20Kuttuva">Shivani Kuttuva</a>, <a href="https://publications.waset.org/abstracts/search?q=Bridget%20Fergie"> Bridget Fergie</a>, <a href="https://publications.waset.org/abstracts/search?q=Andrew%20Mishreki"> Andrew Mishreki</a>, <a href="https://publications.waset.org/abstracts/search?q=Shovkat%20Mir"> Shovkat Mir</a>, <a href="https://publications.waset.org/abstracts/search?q=Fintan%20Bergin"> Fintan Bergin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Diaphragm disease (DD) of the small bowel is a condition wherein the bowel lumen is divided into a series of short compartments by multiple circumferential membranes of mucosa and submucosa, leading to pinhole lumen and subsequent obstruction. It is a rare condition commonly attributed to non-steroidal anti-inflammatory drugs (NSAIDs) usage. Herein we present a 31-yr-old-female with a history of NSAIDs usage for one year following neurosurgery, who presented with recurrent idiopathic small bowel obstruction, recalcitrant anaemia, and impaction of capsule endoscope on investigating for anaemia. The capsule endoscopy images demonstrated multiple circumferential strictures with ulcers at its tip and villous atrophy in the proximal bowel, suggestive of NSAIDs related damage. However, due to the lack of awareness of the detrimental effects of NSAIDs on bowel mucosa distal to the duodenum, the underlying aetiology of this clinical presentation remained a mystery for a significant duration. The patient had to undergo repeated laparotomies in order to relieve the symptoms of recurring acute small bowel obstruction. Upon examining the resected specimen under microscopy, the histopathological hallmark of expanded, fibrotic, and congested submucosa was picked up, leading to the confirmation of diaphragm disease. Thus, this case report aims to widen the awareness among clinicians and aid surgeons in devising a management plan for young individuals presenting with recurring episodes of obstruction due to Diaphragm disease. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=capsule%20endoscopy" title="capsule endoscopy">capsule endoscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=diaphragm%20disease" title=" diaphragm disease"> diaphragm disease</a>, <a href="https://publications.waset.org/abstracts/search?q=NSAIDs" title=" NSAIDs"> NSAIDs</a>, <a href="https://publications.waset.org/abstracts/search?q=recurrent%20small%20bowel%20obstruction" title=" recurrent small bowel obstruction"> recurrent small bowel obstruction</a> </p> <a href="https://publications.waset.org/abstracts/148989/a-case-report-on-diaphragm-disease-of-small-bowel-following-usage-of-non-steroidal-anti-inflammatory-drugs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/148989.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">170</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">28231</span> Crab Shell Waste Chitosan-Based Thin Film for Acoustic Sensor Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maydariana%20Ayuningtyas">Maydariana Ayuningtyas</a>, <a href="https://publications.waset.org/abstracts/search?q=Bambang%20Riyanto"> Bambang Riyanto</a>, <a href="https://publications.waset.org/abstracts/search?q=Akhiruddin%20Maddu"> Akhiruddin Maddu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Industrial waste of crustacean shells, such as shrimp and crab, has been considered as one of the major issues contributing to environmental pollution. The waste processing mechanisms to form new, practical substances with added value have been developed. Chitosan, a derived matter from chitin, which is obtained from crab and shrimp shells, performs prodigiously in broad range applications. A chitosan composite-based diaphragm is a new inspiration in fiber optic acoustic sensor advancement. Elastic modulus, dynamic response, and sensitivity to acoustic wave of chitosan-based composite film contribute great potentials of organic-based sound-detecting material. The objective of this research was to develop chitosan diaphragm application in fiber optic microphone system. The formulation was conducted by blending 5% polyvinyl alcohol (PVA) solution with dissolved chitosan at 0%, 1% and 2% in 1:1 ratio, respectively. Composite diaphragms were characterized for the morphological and mechanical properties to predict the desired acoustic sensor sensitivity. The composite with 2% chitosan indicated optimum performance with 242.55 µm thickness, 67.9% relative humidity, and 29-76% light transmittance. The Young’s modulus of 2%-chitosan composite material was 4.89×104 N/m2, which generated the voltage amplitude of 0.013V and performed sensitivity of 3.28 mV/Pa at 1 kHz. Based on the results above, chitosan from crustacean shell waste can be considered as a viable alternative material for fiber optic acoustic sensor sensing pad development. Further, the research in chitosan utilisation is proposed as novel optical microphone development in anthropogenic noise controlling effort for environmental and biodiversity conservation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acoustic%20sensor" title="acoustic sensor">acoustic sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=chitosan" title=" chitosan"> chitosan</a>, <a href="https://publications.waset.org/abstracts/search?q=composite" title=" composite"> composite</a>, <a href="https://publications.waset.org/abstracts/search?q=crab%20shell" title=" crab shell"> crab shell</a>, <a href="https://publications.waset.org/abstracts/search?q=diaphragm" title=" diaphragm"> diaphragm</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20utilisation" title=" waste utilisation"> waste utilisation</a> </p> <a href="https://publications.waset.org/abstracts/71655/crab-shell-waste-chitosan-based-thin-film-for-acoustic-sensor-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71655.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">257</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">28230</span> Influences of Separation of the Boundary Layer in the Reservoir Pressure in the Shock Tube</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bruno%20Coelho%20Lima">Bruno Coelho Lima</a>, <a href="https://publications.waset.org/abstracts/search?q=Joao%20F.A.%20Martos"> Joao F.A. Martos</a>, <a href="https://publications.waset.org/abstracts/search?q=Paulo%20G.%20P.%20Toro"> Paulo G. P. Toro</a>, <a href="https://publications.waset.org/abstracts/search?q=Israel%20S.%20Rego"> Israel S. Rego</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The shock tube is a ground-facility widely used in aerospace and aeronautics science and technology for studies on gas dynamic and chemical-physical processes in gases at high-temperature, explosions and dynamic calibration of pressure sensors. A shock tube in its simplest form is comprised of two separate tubes of equal cross-section by a diaphragm. The diaphragm function is to separate the two reservoirs at different pressures. The reservoir containing high pressure is called the Driver, the low pressure reservoir is called Driven. When the diaphragm is broken by pressure difference, a normal shock wave and non-stationary (named Incident Shock Wave) will be formed in the same place of diaphragm and will get around toward the closed end of Driven. When this shock wave reaches the closer end of the Driven section will be completely reflected. Now, the shock wave will interact with the boundary layer that was created by the induced flow by incident shock wave passage. The interaction between boundary layer and shock wave force the separation of the boundary layer. The aim of this paper is to make an analysis of influences of separation of the boundary layer in the reservoir pressure in the shock tube. A comparison among CDF (Computational Fluids Dynamics), experiments test and analytical analysis were performed. For the analytical analysis, some routines in Python was created, in the numerical simulations (Computational Fluids Dynamics) was used the Ansys Fluent, and the experimental tests were used T1 shock tube located in IEAv (Institute of Advanced Studies). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boundary%20layer%20separation" title="boundary layer separation">boundary layer separation</a>, <a href="https://publications.waset.org/abstracts/search?q=moving%20shock%20wave" title=" moving shock wave"> moving shock wave</a>, <a href="https://publications.waset.org/abstracts/search?q=shock%20tube" title=" shock tube"> shock tube</a>, <a href="https://publications.waset.org/abstracts/search?q=transient%20simulation" title=" transient simulation"> transient simulation</a> </p> <a href="https://publications.waset.org/abstracts/59608/influences-of-separation-of-the-boundary-layer-in-the-reservoir-pressure-in-the-shock-tube" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59608.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">315</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">28229</span> Numerical Investigation of the Effect of Blast Pressure on Discrete Model in Shock Tube</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aldin%20Justin%20Sundararaj">Aldin Justin Sundararaj</a>, <a href="https://publications.waset.org/abstracts/search?q=Austin%20Lord%20Tennyson"> Austin Lord Tennyson</a>, <a href="https://publications.waset.org/abstracts/search?q=Divya%20Jose"> Divya Jose</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20N.%20Subash"> A. N. Subash</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Blast waves are generated due to the explosions of high energy materials. An explosion yielding a blast wave has the potential to cause severe damage to buildings and its personnel. In order to understand the physics of effects of blast pressure on buildings, studies in the shock tube on generic configurations are carried out at various pressures on discrete models. The strength of shock wave is systematically varied by using different driver gases and diaphragm thickness. The basic material of the diaphragm is Aluminum. To simulate the effect of shock waves on discrete models a shock tube was used. Generic models selected for this study are suitably scaled cylinder, cone and cubical blocks. The experiments were carried out with 2mm diaphragm with burst pressure ranging from 28 to 31 bar. Numerical analysis was carried out over these discrete models. A 3D model of shock-tube with different discrete models inside the tube was used for CFD computation. It was found that cone has dissipated most of the shock pressure compared to cylinder and cubical block. The robustness and the accuracy of the numerical model were validation with the analytical and experimental data. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=shock%20wave" title="shock wave">shock wave</a>, <a href="https://publications.waset.org/abstracts/search?q=blast%20wave" title=" blast wave"> blast wave</a>, <a href="https://publications.waset.org/abstracts/search?q=discrete%20models" title=" discrete models"> discrete models</a>, <a href="https://publications.waset.org/abstracts/search?q=shock%20tube" title=" shock tube"> shock tube</a> </p> <a href="https://publications.waset.org/abstracts/58116/numerical-investigation-of-the-effect-of-blast-pressure-on-discrete-model-in-shock-tube" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58116.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">28228</span> Contribution of Intermediate Diaphragms on LDFs of Straight and Skew Concrete Multicell Box-Girder Bridges</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Iman%20Mohseni">Iman Mohseni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Current studies indicate that neglecting the effect of intermediate diaphragms might lead to highly conservative values for bending moment distribution factors and result in non-economic designs for skew bridges. This paper reports on a parametric study performed on 160 prototypes of straight and skew concrete multicell box-girder bridges. The obtained results were used to develop practical expressions to account for the diaphragm effects on American Association of State Highway and Transportation Officials formulas for live load distribution factors. It was observed that decks with internal transverse diaphragms perpendicular to the longitudinal webs are the best arrangement for load distribution in skew bridges. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=box%20bridges" title="box bridges">box bridges</a>, <a href="https://publications.waset.org/abstracts/search?q=truck" title=" truck"> truck</a>, <a href="https://publications.waset.org/abstracts/search?q=distribution%20factor" title=" distribution factor"> distribution factor</a>, <a href="https://publications.waset.org/abstracts/search?q=diaphragm" title=" diaphragm"> diaphragm</a> </p> <a href="https://publications.waset.org/abstracts/46711/contribution-of-intermediate-diaphragms-on-ldfs-of-straight-and-skew-concrete-multicell-box-girder-bridges" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46711.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">380</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">28227</span> Design and Fabrication of an Array Microejector Driven by a Shear-Mode Piezoelectric Actuator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chiang-Ho%20Cheng">Chiang-Ho Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Hong-Yih%20Cheng"> Hong-Yih Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=An-Shik%20Yang"> An-Shik Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Tung-Hsun%20Hsu"> Tung-Hsun Hsu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper reports a novel actuating design that uses the shear deformation of a piezoelectric actuator to deflect a bulge-diaphragm for driving an array microdroplet ejector. In essence, we employed a circular-shaped actuator poled radial direction with remnant polarization normal to the actuating electric field for inducing the piezoelectric shear effect. The array microdroplet ejector consists of a shear type piezoelectric actuator, a vibration plate, two chamber plates, two channel plates and a nozzle plate. The vibration, chamber and nozzle plate components are fabricated using nickel electroforming technology, whereas the channel plate is fabricated by etching of stainless steel. The diaphragm displacement was measured by the laser two-dimensional scanning vibrometer. The ejected droplets of the microejector were also observed via an optic visualization system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=actuator" title="actuator">actuator</a>, <a href="https://publications.waset.org/abstracts/search?q=nozzle" title=" nozzle"> nozzle</a>, <a href="https://publications.waset.org/abstracts/search?q=microejector" title=" microejector"> microejector</a>, <a href="https://publications.waset.org/abstracts/search?q=piezoelectric" title=" piezoelectric"> piezoelectric</a> </p> <a href="https://publications.waset.org/abstracts/26870/design-and-fabrication-of-an-array-microejector-driven-by-a-shear-mode-piezoelectric-actuator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26870.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">427</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28226</span> Mechanism of in Vitro Inhibition of Alpha-Amylase, Alpha-Glucosidase by Ethanolic Extracts of Polyalthia Longifolia, Its in Vitro Cytotoxicity on L6, Vero Cell-Lines and Influence of Glucose Uptake by Rat Hemi-Diaphragm</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=P.%20Gayathri">P. Gayathri</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20P.%20Jeyanthi"> G. P. Jeyanthi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The bark of Polyalthia longifolia is used in ayurvedic system of medicine for the manangement of various ailments including diabetes mellitus. The bark of P. longifolia extracts was extracted using various polar and non-polar solvents and tested for inhibition of alpha-amylase and alpha-glucosidase among which the ethanolic extracts were found to be more potent. The ethanolic extracts of the bark were tested for the in vitro inhibition of alpha-amylase using starch as substrate and alpha-glucosidase using p-nitro phenyl alpha-D-gluco pyranoside as substrate to establish its in vitro antidiabetic effect. The mechanism of inhibition was determined by Dixon plot and Cornish-Bowden plot. The cytotoxic effect of the extract was tested on L6 and Vero cell-lines. The extract was partially purified by TLC. The individual effect of the ethanolic extract, TLC fractions and its combinatorial effect with insulin and glibenclamide on glucose uptake by rat hemi-diaphragm were studied.Results revealed that the ethanolic extracts of Polyalthia longifolia bark exhibited competitive inhibition of alpha-amylase and alpha-glucosidase. The extracts were also found not to be cytotoxic at the highest dose of 1 mg/mL. Glucose uptake study revealed that the extract alone and when combined with insulin, decreased the glucose uptake when compared to insulin control, however the purified TLC fractions exhibited significantly higher (p<0.05) glucose uptake by the rat hemi-diaphragm when compared to insulin. The study shows various possible mechanism of in vitro antidiabetic effect of the P. longifolia bark. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alpha-amylase" title="alpha-amylase">alpha-amylase</a>, <a href="https://publications.waset.org/abstracts/search?q=alpha-glucosidase" title=" alpha-glucosidase"> alpha-glucosidase</a>, <a href="https://publications.waset.org/abstracts/search?q=dixon" title=" dixon"> dixon</a>, <a href="https://publications.waset.org/abstracts/search?q=cornish-bowden" title=" cornish-bowden"> cornish-bowden</a>, <a href="https://publications.waset.org/abstracts/search?q=L6" title=" L6 "> L6 </a>, <a href="https://publications.waset.org/abstracts/search?q=Vero%20cell-lines" title=" Vero cell-lines"> Vero cell-lines</a>, <a href="https://publications.waset.org/abstracts/search?q=glucose%20uptake" title=" glucose uptake"> glucose uptake</a>, <a href="https://publications.waset.org/abstracts/search?q=polyalthia%20longifolia%20bark" title=" polyalthia longifolia bark"> polyalthia longifolia bark</a>, <a href="https://publications.waset.org/abstracts/search?q=ethanolic%20extract" title=" ethanolic extract"> ethanolic extract</a>, <a href="https://publications.waset.org/abstracts/search?q=TLC%20fractions" title=" TLC fractions"> TLC fractions</a> </p> <a href="https://publications.waset.org/abstracts/34899/mechanism-of-in-vitro-inhibition-of-alpha-amylase-alpha-glucosidase-by-ethanolic-extracts-of-polyalthia-longifolia-its-in-vitro-cytotoxicity-on-l6-vero-cell-lines-and-influence-of-glucose-uptake-by-rat-hemi-diaphragm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34899.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">469</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">28225</span> Study of the Diaphragm Flexibility Effect on the Inelastic Seismic Response of Thin Wall Reinforced Concrete Buildings (TWRCB): A Purpose to Reduce the Uncertainty in the Vulnerability Estimation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Zapata">A. Zapata</a>, <a href="https://publications.waset.org/abstracts/search?q=Orlando%20Arroyo"> Orlando Arroyo</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Bonett"> R. Bonett</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Over the last two decades, the growing demand for housing in Latin American countries has led to the development of construction projects based on low and medium-rise buildings with thin reinforced concrete walls. This system, known as Thin Walls Reinforced Concrete Buildings (TWRCB), uses walls with thicknesses from 100 to 150 millimetres, with flexural reinforcement formed by welded wire mesh (WWM) with diameters between 5 and 7 millimetres, arranged in one or two layers. These walls often have irregular structural configurations, including combinations of rectangular shapes. Experimental and numerical research conducted in regions where this structural system is commonplace indicates inherent weaknesses, such as limited ductility due to the WWM reinforcement and thin element dimensions. Because of its complexity, numerical analyses have relied on two-dimensional models that don't explicitly account for the floor system, even though it plays a crucial role in distributing seismic forces among the resilient elements. Nonetheless, the numerical analyses assume a rigid diaphragm hypothesis. For this purpose, two study cases of buildings were selected, low-rise and mid-rise characteristics of TWRCB in Colombia. The buildings were analyzed in Opensees using the MVLEM-3D for walls and shell elements to simulate the slabs to involve the effect of coupling diaphragm in the nonlinear behaviour. Three cases are considered: a) models without a slab, b) models with rigid slabs, and c) models with flexible slabs. An incremental static (pushover) and nonlinear dynamic analyses were carried out using a set of 44 far-field ground motions of the FEMA P-695, scaled to 1.0 and 1.5 factors to consider the probability of collapse for the design base earthquake (DBE) and the maximum considered earthquake (MCE) for the model, according to the location sites and hazard zone of the archetypes in the Colombian NSR-10. Shear base capacity, maximum displacement at the roof, walls shear base individual demands and probabilities of collapse were calculated, to evaluate the effect of absence, rigid and flexible slabs in the nonlinear behaviour of the archetype buildings. The pushover results show that the building exhibits an overstrength between 1.1 to 2 when the slab is considered explicitly and depends on the structural walls plan configuration; additionally, the nonlinear behaviour considering no slab is more conservative than if the slab is represented. Include the flexible slab in the analysis remarks the importance to consider the slab contribution in the shear forces distribution between structural elements according to design resistance and rigidity. The dynamic analysis revealed that including the slab reduces the collapse probability of this system due to have lower displacements and deformations, enhancing the safety of residents and the seismic performance. The strategy of including the slab in modelling is important to capture the real effect on the distribution shear forces in walls due to coupling to estimate the correct nonlinear behaviour in this system and the adequate distribution to proportionate the correct resistance and rigidity of the elements in the design to reduce the possibility of damage to the elements during an earthquake. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thin%20wall%20reinforced%20concrete%20buildings" title="thin wall reinforced concrete buildings">thin wall reinforced concrete buildings</a>, <a href="https://publications.waset.org/abstracts/search?q=coupling%20slab" title=" coupling slab"> coupling slab</a>, <a href="https://publications.waset.org/abstracts/search?q=rigid%20diaphragm" title=" rigid diaphragm"> rigid diaphragm</a>, <a href="https://publications.waset.org/abstracts/search?q=flexible%20diaphragm" title=" flexible diaphragm"> flexible diaphragm</a> </p> <a href="https://publications.waset.org/abstracts/174077/study-of-the-diaphragm-flexibility-effect-on-the-inelastic-seismic-response-of-thin-wall-reinforced-concrete-buildings-twrcb-a-purpose-to-reduce-the-uncertainty-in-the-vulnerability-estimation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/174077.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">74</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28224</span> Case of A Huge Retroperitoneal Abscess Spanning from the Diaphragm to the Pelvic Brim</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christopher%20Leung">Christopher Leung</a>, <a href="https://publications.waset.org/abstracts/search?q=Tony%20Kim"> Tony Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Rebecca%20Lendzion"> Rebecca Lendzion</a>, <a href="https://publications.waset.org/abstracts/search?q=Scott%20Mackenzie"> Scott Mackenzie</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Retroperitoneal abscesses are a rare but serious condition with often delayed diagnosis, non-specific symptoms, multiple causes and high morbidity/mortality. With the advent of more readily available cross-sectional imaging, retroperitoneal abscesses are treated earlier and better outcomes are achieved. Occasionally, a retroperitoneal abscess is present as a huge retroperitoneal abscess, as evident in this 53-year-old male. With a background of chronic renal disease and left partial nephrectomy, this gentleman presented with a one-month history of left flank pain without any other symptoms, including fevers or abdominal pain. CT abdomen and pelvis demonstrated a huge retroperitoneal abscess spanning from the diaphragm, abutting the spleen, down to the iliopsoas muscle and abutting the iliac vessels at the pelvic brim. This large retroperitoneal abscess required open drainage as well as drainage by interventional radiology. A long course of intravenous antibiotics and multiple drainages was required to drain the abscess. His blood culture and fluid culture grew Proteus species suggesting a urinary source, likely from his non-functioning kidney, which had a partial nephrectomy. Such a huge retroperitoneal abscess has rarely been described in the literature. The learning point here is that the basic principle of source control and antibiotics is paramount in treating retroperitoneal abscesses regardless of the size of the abscess. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=retroperitoneal%20abscess" title="retroperitoneal abscess">retroperitoneal abscess</a>, <a href="https://publications.waset.org/abstracts/search?q=retroperitoneal%20mass" title=" retroperitoneal mass"> retroperitoneal mass</a>, <a href="https://publications.waset.org/abstracts/search?q=sepsis" title=" sepsis"> sepsis</a>, <a href="https://publications.waset.org/abstracts/search?q=genitourinary%20infection" title=" genitourinary infection"> genitourinary infection</a> </p> <a href="https://publications.waset.org/abstracts/140544/case-of-a-huge-retroperitoneal-abscess-spanning-from-the-diaphragm-to-the-pelvic-brim" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140544.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">221</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">28223</span> Expression of Slit Diaphragm Genes of Chicken Embryo Mesonephros </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Abdelsabour-Khalaf">Mohammed Abdelsabour-Khalaf</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Yusuf"> F. Yusuf </a>, <a href="https://publications.waset.org/abstracts/search?q=B%20Brand-Saberi"> B Brand-Saberi </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Purpose: Applications of nanotechnology nowadays extended to include a wide range of scientific areas such electron micrscopy and gene expression. The aim of the current study was to investigate the developmental expression pattern of genes involved in human glomerulo-nephropathies associated with massive proteinuria and podocyte differentiation using the chicken mesonephros as a model system. Method: We performed in situ hybridization using chicken specific mRNA probes for genes expressed in the early nephron and slit diaphragm genes. The probes used were cNeph1, cNeph2, cSim1, cLmx1b, and cAtoh8. Chicken embryos from Hamburger Hamilton developmental stage HH19 (E3) to HH 34 (E9) were used for the in situ hybridization (ISH). ISH was performed on whole mount embryos which were sectioned by vibratome. Results: Our result show that Neph1, Neph2, Sim1. Lmx1b and Atoh8 genes are dynamically expressed during nephron morphogenesis and Neph1 and Atoh8 are also specifically expressed in the podocytes during late stages of differentiation. Conclusion: We conclude from our results that the genes implicated in congenital and acquired glomerulo-nephropathies like Neph1 and Neph2 are dynamically expressed during mesonephros development pointing towards a role in the formation of the filtration barrier and the differentiation of the mesonephric podocytes. Thus the avian mesonephros could serve as a model to study human kidney diseases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mesonephros" title="mesonephros">mesonephros</a>, <a href="https://publications.waset.org/abstracts/search?q=chicken%20embryo" title=" chicken embryo"> chicken embryo</a>, <a href="https://publications.waset.org/abstracts/search?q=gene%20expression" title=" gene expression"> gene expression</a>, <a href="https://publications.waset.org/abstracts/search?q=immunohistochemistry" title=" immunohistochemistry"> immunohistochemistry</a> </p> <a href="https://publications.waset.org/abstracts/17923/expression-of-slit-diaphragm-genes-of-chicken-embryo-mesonephros" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17923.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">620</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">28222</span> Assessing P0.1 and Occlusion Pressures in Brain-Injured Patients on Pressure Support Ventilation: A Study Protocol</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20B.%20R.%20Slagmulder">S. B. R. Slagmulder</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Monitoring inspiratory effort and dynamic lung stress in patients on pressure support ventilation in the ICU is important for protecting against self inflicted lung injury (P-SILI) and diaphragm dysfunction. Strategies to address the detrimental effects of respiratory drive and effort can lead to improved patient outcomes. Two non-invasive estimation methods, occlusion pressure (Pocc) and P0.1, have been proposed for achieving lung and diaphragm protective ventilation. However, their relationship and interpretation in neuro ICU patients is not well understood. P0.1 is the airway pressure measured during a 100-millisecond occlusion of the inspiratory port. It reflects the neural drive from the respiratory centers to the diaphragm and respiratory muscles, indicating the patient's respiratory drive during the initiation of each breath. Occlusion pressure, measured during a brief inspiratory pause against a closed airway, provides information about the inspiratory muscles' strength and the system's total resistance and compliance. Research Objective: Understanding the relationship between Pocc and P0.1 in brain-injured patients can provide insights into the interpretation of these values in pressure support ventilation. This knowledge can contribute to determining extubation readiness and optimizing ventilation strategies to improve patient outcomes. The central goal is to asses a study protocol for determining the relationship between Pocc and P0.1 in brain-injured patients on pressure support ventilation and their ability to predict successful extubation. Additionally, comparing these values between brain-damaged and non-brain-damaged patients may provide valuable insights. Key Areas of Inquiry: 1. How do Pocc and P0.1 values correlate within brain injury patients undergoing pressure support ventilation? 2. To what extent can Pocc and P0.1 values serve as predictive indicators for successful extubation in patients with brain injuries? 3. What differentiates the Pocc and P0.1 values between patients with brain injuries and those without? Methodology: P0.1 and occlusion pressures are standard measurements for pressure support ventilation patients, taken by attending doctors as per protocol. We utilize electronic patient records for existing data. Unpaired T-test will be conducted to compare P0.1 and Pocc values between both study groups. Associations between P0.1 and Pocc and other study variables, such as extubation, will be explored with simple regression and correlation analysis. Depending on how the data evolve, subgroup analysis will be performed for patients with and without extubation failure. Results: While it is anticipated that neuro patients may exhibit high respiratory drive, the linkage between such elevation, quantified by P0.1, and successful extubation remains unknown The analysis will focus on determining the ability of these values to predict successful extubation and their potential impact on ventilation strategies. Conclusion: Further research is pending to fully understand the potential of these indices and their impact on mechanical ventilation in different patient populations and clinical scenarios. Understanding these relationships can aid in determining extubation readiness and tailoring ventilation strategies to improve patient outcomes in this specific patient population. Additionally, it is vital to account for the influence of sedatives, neurological scores, and BMI on respiratory drive and occlusion pressures to ensure a comprehensive analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=brain%20damage" title="brain damage">brain damage</a>, <a href="https://publications.waset.org/abstracts/search?q=diaphragm%20dysfunction" title=" diaphragm dysfunction"> diaphragm dysfunction</a>, <a href="https://publications.waset.org/abstracts/search?q=occlusion%20pressure" title=" occlusion pressure"> occlusion pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=p0.1" title=" p0.1"> p0.1</a>, <a href="https://publications.waset.org/abstracts/search?q=respiratory%20drive" title=" respiratory drive"> respiratory drive</a> </p> <a href="https://publications.waset.org/abstracts/171722/assessing-p01-and-occlusion-pressures-in-brain-injured-patients-on-pressure-support-ventilation-a-study-protocol" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/171722.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">68</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">28221</span> Impact of the Dog-Technic for D1-D4 and Longitudinal Stroke Technique for Diaphragm on Peak Expiratory Flow (PEF) in Asthmatic Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Victoria%20Eugenia%20Garnacho-Garnacho">Victoria Eugenia Garnacho-Garnacho</a>, <a href="https://publications.waset.org/abstracts/search?q=Elena%20Sonsoles%20Rodriguez-Lopez"> Elena Sonsoles Rodriguez-Lopez</a>, <a href="https://publications.waset.org/abstracts/search?q=Raquel%20Delgado-Delgado"> Raquel Delgado-Delgado</a>, <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Otero-Campos"> Alvaro Otero-Campos</a>, <a href="https://publications.waset.org/abstracts/search?q=Jesus%20Guodemar-Perez"> Jesus Guodemar-Perez</a>, <a href="https://publications.waset.org/abstracts/search?q=Angelo%20Michelle%20Vagali"> Angelo Michelle Vagali</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Pablo%20Hervas-Perez"> Juan Pablo Hervas-Perez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Asthma is a heterogeneous disease which has always had a drug treatment. Osteopathic treatment that we propose is aimed, seen through a dorsal manipulation (Dog Technic D1-D4) and a technique for diaphragm (Longitudinal Stroke) forced expiratory flow in spirometry changes there are in particular that there is an increase in the volumes of the Peak Flow and Post intervention and effort and that the application of these two techniques together is more powerful if we applied only a Longitudinal (Stroke). Also rating if this type of treatment will have repercussions on breathlessness, a very common symptom in asthma. And finally to investigate if provided vertebra pain decreased after a manipulation. Methods—Participants were recruited between students and professors of the University, aged 18-65, patients (n = 18) were assigned randomly to one of the two groups, group 1 (longitudinal Stroke and manipulation dorsal Dog Technic) and group 2 (diaphragmatic technique, Longitudinal Stroke). The statistical analysis is characterized by the comparison of the main indicator of obstruction of via area PEF (peak expiratory flow) in various situations through the peak flow meter Datospir Peak-10. The measurements were carried out in four phases: at rest, after the stress test, after the treatment, after treatment and the stress test. After each stress test was evaluated, through the Borg scale, the level of Dyspnea on each patient, regardless of the group. In Group 1 in addition to these parameters was calculated using an algometer spinous pain before and after the manipulation. All data were taken at the minute. Results—12 Group 1 (Dog Technic and Longitudinal Stroke) patients responded positively to treatment, there was an increase of 5.1% and 6.1% of the post-treatment PEF and post-treatment, and effort. The results of the scale of Borg by which we measure the level of Dyspnea were positive, a 54.95%, patients noted an improvement in breathing. In addition was confirmed through the means of both groups group 1 in which two techniques were applied was 34.05% more effective than group 2 in which applied only a. After handling pain fell by 38% of the cases. Conclusions—The impact of the technique of Dog-Technic for D1-D4 and the Longitudinal Stroke technique for diaphragm in the volumes of peak expiratory flow (PEF) in asthmatic patients were positive, there was a change of the PEF Post intervention and post-treatment, and effort and showed the most effective group in which only a technique was applied. Furthermore this type of treatment decreased facilitated vertebrae pain and was efficient in the improvement of Dyspnea and the general well-being of the patient. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ANS" title="ANS">ANS</a>, <a href="https://publications.waset.org/abstracts/search?q=asthma" title=" asthma"> asthma</a>, <a href="https://publications.waset.org/abstracts/search?q=manipulation" title=" manipulation"> manipulation</a>, <a href="https://publications.waset.org/abstracts/search?q=manual%20therapy" title=" manual therapy"> manual therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=osteopathic" title=" osteopathic"> osteopathic</a> </p> <a href="https://publications.waset.org/abstracts/55395/impact-of-the-dog-technic-for-d1-d4-and-longitudinal-stroke-technique-for-diaphragm-on-peak-expiratory-flow-pef-in-asthmatic-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55395.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">288</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">28220</span> Shared Heart with a Common Atrial Complex and Persistent Right Dorsal Aorta in Conjoined Twins</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=L.%20C.%20Prasanna">L. C. Prasanna</a>, <a href="https://publications.waset.org/abstracts/search?q=Antony%20Sylvan%20D%E2%80%99Souza"> Antony Sylvan D’Souza</a>, <a href="https://publications.waset.org/abstracts/search?q=Kumar%20M.%20R.%20Bhat"> Kumar M. R. Bhat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Although life as a conjoined twin would seem intolerable, there has recently been an increased interest in this subject because of the increasing number of cases where attempts have been made to separate them surgically. We have reviewed articles on cardiovascular anomalies in conjoined twins and presenting rarest anomaly in dicephalus parapagus fetus having two heads attached to one body from the neck or upper chest downwards, with a pair of limbs and a set of reproductive organs. Both the twins shared a common thoracic cavity with a single sternum. When the thoracic cavity was opened, a common anterior mediastinum was found. On opening the pericardium, two separate, closely apposed hearts were exposed. The two cardia are placed side by side. The left heart was slightly larger than the right and were joined at the atrial levels. Four atrial appendages were present, two for each twin. The atrial complex was a common chamber posterior to the ventricles. A single large tributary which could be taken as inferior vena cava drains into the common atrial chamber. In this case, the heart could not be assigned to either twin and therefore, it is referred to as the shared heart within a common pericardial sac. The right and left descending thoracic aorta have joined with each other just above the diaphragm to form a common descending thoracic aorta which has an opening in the diaphragm to be continued as common abdominal aorta which has a normal branching pattern. Upon an interior dissection, it is observed that the two atria have a wide communication which could be a wide patent foramen ovale and this common atrial cavity has a communication with a remnant of a possible common sinus venosus. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=atrium" title="atrium">atrium</a>, <a href="https://publications.waset.org/abstracts/search?q=congenital%20anomaly" title=" congenital anomaly"> congenital anomaly</a>, <a href="https://publications.waset.org/abstracts/search?q=conjoined%20twin" title=" conjoined twin"> conjoined twin</a>, <a href="https://publications.waset.org/abstracts/search?q=sinus%20venosus" title=" sinus venosus"> sinus venosus</a> </p> <a href="https://publications.waset.org/abstracts/63812/shared-heart-with-a-common-atrial-complex-and-persistent-right-dorsal-aorta-in-conjoined-twins" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63812.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">394</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">28219</span> Laboratory Calibration of Soil Pressure Transducer for a Specified Field Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Zahidul%20Islam%20Bhuiyan">Mohammad Zahidul Islam Bhuiyan</a>, <a href="https://publications.waset.org/abstracts/search?q=Shanyong%20Wang"> Shanyong Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Scott%20William%20Sloan"> Scott William Sloan</a>, <a href="https://publications.waset.org/abstracts/search?q=Daichao%20%20Sheng"> Daichao Sheng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays soil pressure transducers are widely used to measure the soil stress states in laboratory and field experiments. The soil pressure transducers, investigated here, are traditional diaphragm-type earth pressure cells (DEPC) based on strain gauge principle. It is found that the output of these sensors varies with the soil conditions as well as the position of a sensor. Therefore, it is highly recommended to calibrate the pressure sensors based on the similar conditions of their intended applications. The factory calibration coefficients of the EPCs are not reliable to use since they are normally calibrated by applying fluid (a special type of oil) pressure only over load sensing zone, which does not represent the actual field conditions. Thus, the calibration of these sensors is utmost important, and they play a pivotal role for assessing earth pressures precisely. In the present study, TML soil pressure sensor is used to compare its sensitivity under different calibration systems, for example, fluid calibration, and static load calibration with or without soil. The results report that the sensor provides higher sensitivity (more accurate results) under soil calibration system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=calibration" title="calibration">calibration</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20pressure" title=" soil pressure"> soil pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=earth%20pressure%20cell" title=" earth pressure cell"> earth pressure cell</a>, <a href="https://publications.waset.org/abstracts/search?q=sensitivity" title=" sensitivity"> sensitivity</a> </p> <a href="https://publications.waset.org/abstracts/79500/laboratory-calibration-of-soil-pressure-transducer-for-a-specified-field-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79500.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">240</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">28218</span> Torsional Design Method of Asymmetric and Irregular Building under Horizontal Earthquake Action</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Radhwane%20Boudjelthia">Radhwane Boudjelthia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Based upon elaborate analysis on torsional design methods of asymmetric and irregular structure under horizontal earthquake action, it points out that the main design principles of an asymmetric building subjected to horizontal earthquake are: the torsion of vertical members induced by the torsion angle of the floor (rigid diaphragm) cannot exceed the allowable value, the inter-story displacement at outermost frame or shear wall should be less than that required by design code, stresses in plane of the slab should be controlled within acceptable extent under different intensity earthquakes. That current seismic design code only utilizes the torsion displacement ratio to control the floor torsion, which seems not reasonable enough since its connotation is the multiple of the floor torsion angle and the distance of floor mass center to the edge frame or shear wall. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=earthquake" title="earthquake">earthquake</a>, <a href="https://publications.waset.org/abstracts/search?q=building" title=" building"> building</a>, <a href="https://publications.waset.org/abstracts/search?q=seismic%20forces" title=" seismic forces"> seismic forces</a>, <a href="https://publications.waset.org/abstracts/search?q=displacement" title=" displacement"> displacement</a>, <a href="https://publications.waset.org/abstracts/search?q=resonance" title=" resonance"> resonance</a>, <a href="https://publications.waset.org/abstracts/search?q=response" title=" response"> response</a> </p> <a href="https://publications.waset.org/abstracts/44567/torsional-design-method-of-asymmetric-and-irregular-building-under-horizontal-earthquake-action" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44567.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">347</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">28217</span> Development of a Device for Detecting Fluids in the Esophagus</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20J.%20Puertas">F. J. Puertas</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Castro"> M. Castro</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Tebar"> A. Tebar</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20J.%20Fito"> P. J. Fito</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Gadea"> R. Gadea</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20M.%20Monz%C3%B3"> J. M. Monzó</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20J.%20Colom"> R. J. Colom</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There is a great diversity of diseases that affect the integrity of the walls of the esophagus, generally of a digestive nature. Among them, gastroesophageal reflux is a common disease in the general population, affecting the patient's quality of life; however, there are still unmet diagnostic and therapeutic issues. The consequences of untreated or asymptomatic acid reflux on the esophageal mucosa are not only pain, heartburn, and acid regurgitation but also an increased risk of esophageal cancer. Currently, the diagnostic methods to detect problems in the esophageal tract are invasive and annoying, as 24-hour impedance-pH monitoring forces the patient to be uncomfortable for hours to be able to make a correct diagnosis. In this work, the development of a sensor able to measure in depth is proposed, allowing the detection of liquids circulating in the esophageal tract. The multisensor detection system is based on radiofrequency photospectrometry. At an experimental level, consumers representative of the population in terms of sex and age have been used, placing the sensors between the trachea and the diaphragm analyzing the measurements in vacuum, water, orange juice and saline medium. The results obtained have allowed us to detect the appearance of different liquid media in the esophagus, segregating them based on their ionic content. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bioimpedance" title="bioimpedance">bioimpedance</a>, <a href="https://publications.waset.org/abstracts/search?q=dielectric%20spectroscopy" title=" dielectric spectroscopy"> dielectric spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=gastroesophageal%20reflux" title=" gastroesophageal reflux"> gastroesophageal reflux</a>, <a href="https://publications.waset.org/abstracts/search?q=GERD" title=" GERD"> GERD</a> </p> <a href="https://publications.waset.org/abstracts/177870/development-of-a-device-for-detecting-fluids-in-the-esophagus" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/177870.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">101</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">28216</span> A Radiofrequency Spectrophotometer Device to Detect Liquids in Gastroesophageal Ways</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Gadea">R. Gadea</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20M.%20Monz%C3%B3"> J. M. Monzó</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20J.%20Puertas"> F. J. Puertas</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Castro"> M. Castro</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Tebar"> A. Tebar</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20J.%20Fito"> P. J. Fito</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20J.%20Colom"> R. J. Colom</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There exists a wide array of ailments impacting the structural soundness of the esophageal walls, predominantly linked to digestive issues. Presently, the techniques employed for identifying esophageal tract complications are excessively invasive and discomforting, subjecting patients to prolonged discomfort in order to achieve an accurate diagnosis. This study proposes the creation of a sensor with profound measuring capabilities designed to detect fluids coursing through the esophageal tract. The multi-sensor detection system relies on radiofrequency photospectrometry. During experimentation, individuals representing diverse demographics in terms of gender and age were utilized, positioning the sensors amidst the trachea and diaphragm and assessing measurements in vacuum conditions, water, orange juice, and saline solutions. The findings garnered enabled the identification of various liquid mediums within the esophagus, segregating them based on their ionic composition. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=radiofrequency%20spectrophotometry" title="radiofrequency spectrophotometry">radiofrequency spectrophotometry</a>, <a href="https://publications.waset.org/abstracts/search?q=medical%20device" title=" medical device"> medical device</a>, <a href="https://publications.waset.org/abstracts/search?q=gastroesophageal%20disease" title=" gastroesophageal disease"> gastroesophageal disease</a>, <a href="https://publications.waset.org/abstracts/search?q=photonics" title=" photonics"> photonics</a> </p> <a href="https://publications.waset.org/abstracts/179071/a-radiofrequency-spectrophotometer-device-to-detect-liquids-in-gastroesophageal-ways" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/179071.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">81</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28215</span> On an Experimental Method for Investigating the Dynamic Parameters of Multi-Story Buildings at Vibrating Seismic Loadings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shakir%20Mamedov">Shakir Mamedov</a>, <a href="https://publications.waset.org/abstracts/search?q=Tukezban%20Hasanova"> Tukezban Hasanova</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Research of dynamic properties of various materials and elements of structures at shock affecting and on the waves so many scientific works of the Azerbaijani scientists are devoted. However, Experimental definition of dynamic parameters of fluctuations of constructions and buildings while carries estimated character. The purpose of the present experimental researches is definition of parameters of fluctuations of installation of observations. In this case, a mockup of four floor buildings and sixteen floor skeleton-type buildings built in the Baku with the stiffening diaphragm at natural vibrating seismic affectings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fluctuations" title="fluctuations">fluctuations</a>, <a href="https://publications.waset.org/abstracts/search?q=seismoreceivers" title=" seismoreceivers"> seismoreceivers</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20experiments" title=" dynamic experiments"> dynamic experiments</a>, <a href="https://publications.waset.org/abstracts/search?q=acceleration" title=" acceleration"> acceleration</a> </p> <a href="https://publications.waset.org/abstracts/3188/on-an-experimental-method-for-investigating-the-dynamic-parameters-of-multi-story-buildings-at-vibrating-seismic-loadings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3188.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">398</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">28214</span> Valuation on MEMS Pressure Sensors and Device Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nurul%20Amziah%20Md%20Yunus">Nurul Amziah Md Yunus</a>, <a href="https://publications.waset.org/abstracts/search?q=Izhal%20Abdul%20Halin"> Izhal Abdul Halin</a>, <a href="https://publications.waset.org/abstracts/search?q=Nasri%20Sulaiman"> Nasri Sulaiman</a>, <a href="https://publications.waset.org/abstracts/search?q=Noor%20Faezah%20Ismail"> Noor Faezah Ismail</a>, <a href="https://publications.waset.org/abstracts/search?q=Ong%20Kai%20Sheng"> Ong Kai Sheng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The MEMS pressure sensor has been introduced and presented in this paper. The types of pressure sensor and its theory of operation are also included. The latest MEMS technology, the fabrication processes of pressure sensor are explored and discussed. Besides, various device applications of pressure sensor such as tire pressure monitoring system, diesel particulate filter and others are explained. Due to further miniaturization of the device nowadays, the pressure sensor with nanotechnology (NEMS) is also reviewed. The NEMS pressure sensor is expected to have better performance as well as lower in its cost. It has gained an excellent popularity in many applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pressure%20sensor" title="pressure sensor">pressure sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=diaphragm" title=" diaphragm"> diaphragm</a>, <a href="https://publications.waset.org/abstracts/search?q=MEMS" title=" MEMS"> MEMS</a>, <a href="https://publications.waset.org/abstracts/search?q=automotive%20application" title=" automotive application"> automotive application</a>, <a href="https://publications.waset.org/abstracts/search?q=biomedical%20application" title=" biomedical application"> biomedical application</a>, <a href="https://publications.waset.org/abstracts/search?q=NEMS" title=" NEMS"> NEMS</a> </p> <a href="https://publications.waset.org/abstracts/28395/valuation-on-mems-pressure-sensors-and-device-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28395.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">671</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">28213</span> A Step Magnitude Haptic Feedback Device and Platform for Better Way to Review Kinesthetic Vibrotactile 3D Design in Professional Training</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Biki%20Sarmah">Biki Sarmah</a>, <a href="https://publications.waset.org/abstracts/search?q=Priyanko%20Raj%20Mudiar"> Priyanko Raj Mudiar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the modern world of remotely interactive virtual reality-based learning and teaching, including professional skill-building training and acquisition practices, as well as data acquisition and robotic systems, the revolutionary application or implementation of field-programmable neurostimulator aids and first-hand interactive sensitisation techniques into 3D holographic audio-visual platforms have been a coveted dream of many scholars, professionals, scientists, and students. Integration of 'kinaesthetic vibrotactile haptic perception' along with an actuated step magnitude contact profiloscopy in augmented reality-based learning platforms and professional training can be implemented by using an extremely calculated and well-coordinated image telemetry including remote data mining and control technique. A real-time, computer-aided (PLC-SCADA) field calibration based algorithm must be designed for the purpose. But most importantly, in order to actually realise, as well as to 'interact' with some 3D holographic models displayed over a remote screen using remote laser image telemetry and control, all spatio-physical parameters like cardinal alignment, gyroscopic compensation, as well as surface profile and thermal compositions, must be implemented using zero-order type 1 actuators (or transducers) because they provide zero hystereses, zero backlashes, low deadtime as well as providing a linear, absolutely controllable, intrinsically observable and smooth performance with the least amount of error compensation while ensuring the best ergonomic comfort ever possible for the users. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=haptic%20feedback" title="haptic feedback">haptic feedback</a>, <a href="https://publications.waset.org/abstracts/search?q=kinaesthetic%20vibrotactile%203D%20%20design" title=" kinaesthetic vibrotactile 3D design"> kinaesthetic vibrotactile 3D design</a>, <a href="https://publications.waset.org/abstracts/search?q=medical%20simulation%20training" title=" medical simulation training"> medical simulation training</a>, <a href="https://publications.waset.org/abstracts/search?q=piezo%20diaphragm%20based%20actuator" title=" piezo diaphragm based actuator"> piezo diaphragm based actuator</a> </p> <a href="https://publications.waset.org/abstracts/131443/a-step-magnitude-haptic-feedback-device-and-platform-for-better-way-to-review-kinesthetic-vibrotactile-3d-design-in-professional-training" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131443.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">28212</span> Investigation of Steel Infill Panels under Blast Impulsive Loading</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seyed%20M.%20Zahrai">Seyed M. Zahrai</a>, <a href="https://publications.waset.org/abstracts/search?q=Saeid%20Lotfi"> Saeid Lotfi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> If an infill panel does not have enough ductility against the loading, it breaks and gets damaged before depreciation and load transfer. As steel infill panel has appropriate ductility before fracture, it can be used as an alternative to typical infill panels under blast loading. Concerning enough ductility of out-of-plane behavior the infill panel, the impact force enters the horizontal diaphragm and is distributed among the lateral elements which can be made from steel infill panels. This article investigates the behavior of steel infill panels with different thickness and stiffeners using finite element analysis with geometric and material nonlinearities for optimization of the steel plate thickness and stiffeners arrangement to obtain more efficient design for its out-of-plane behavior. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=blast%20loading" title="blast loading">blast loading</a>, <a href="https://publications.waset.org/abstracts/search?q=ductility" title=" ductility"> ductility</a>, <a href="https://publications.waset.org/abstracts/search?q=maximum%20displacement" title=" maximum displacement"> maximum displacement</a>, <a href="https://publications.waset.org/abstracts/search?q=steel%20infill%20panel" title=" steel infill panel"> steel infill panel</a> </p> <a href="https://publications.waset.org/abstracts/74501/investigation-of-steel-infill-panels-under-blast-impulsive-loading" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74501.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">277</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28211</span> Thermal Performance of a Pair of Synthetic Jets Equipped in Microchannel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=J.%20Mohammadpour">J. Mohammadpour</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20E.%20Lau"> G. E. Lau</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Cheng"> S. Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Lee"> A. Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Numerical study was conducted using two synthetic jet actuators attached underneath a micro-channel. By fixing the oscillating frequency and diaphragm amplitude, the effects on the heat transfer within the micro-channel were investigated with two synthetic jets being in-phase and 180° out-of-phase at different orifice spacing. There was a significant benefit identified with two jets being 180° out-of-phase with each other at the orifice spacing of 2 mm. By having this configuration, there was a distinct pattern of vortex forming which disrupts the main channel flow as well as promoting thermal mixing at high velocity within the channel. Therefore, this configuration achieved higher cooling performance compared to the other cases studied in terms of the reduction in the maximum temperature and cooling uniformity in the silicon wafer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=synthetic%20jets" title="synthetic jets">synthetic jets</a>, <a href="https://publications.waset.org/abstracts/search?q=microchannel" title=" microchannel"> microchannel</a>, <a href="https://publications.waset.org/abstracts/search?q=electronic%20cooling" title=" electronic cooling"> electronic cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=computational%20fluid%20dynamics" title=" computational fluid dynamics"> computational fluid dynamics</a> </p> <a href="https://publications.waset.org/abstracts/126507/thermal-performance-of-a-pair-of-synthetic-jets-equipped-in-microchannel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/126507.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">198</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=diaphragm%20based&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=diaphragm%20based&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=diaphragm%20based&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=diaphragm%20based&page=5">5</a></li> <li class="page-item"><a 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href="https://publications.waset.org/abstracts/search?q=diaphragm%20based&page=942">942</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=diaphragm%20based&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 16th foundational anniversary</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Account <li><a href="https://waset.org/profile">My Account</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> 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