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Choi</title> <meta name="description" content="Search results for: Yoon Ho Choi"> <meta name="keywords" content="Yoon Ho Choi"> <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="Yoon Ho Choi"> <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> 412</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Yoon Ho Choi</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">412</span> Enhanced Energy Powers via Composites of Piezoelectric CH₃NH₃PbI₃ and Flexoelectric Zn-Al:Layered Double Hydroxides (LDH) Nanosheets</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Soon-Gil%20Yoon">Soon-Gil Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Min-Ju%20Choi"> Min-Ju Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sung-Ho%20Shin"> Sung-Ho Shin</a>, <a href="https://publications.waset.org/abstracts/search?q=Junghyo%20Nah"> Junghyo Nah</a>, <a href="https://publications.waset.org/abstracts/search?q=Jin-Seok%20Choi"> Jin-Seok Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyun-A%20Song"> Hyun-A Song</a>, <a href="https://publications.waset.org/abstracts/search?q=Goeun%20Choi"> Goeun Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Jin-Ho%20Choy"> Jin-Ho Choy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Layered double hydroxides (LDHs) with positively charged brucite-like layers and negatively charged interlayer anions are considered a critical nanoscale building block with potential for application in catalysts, biological sensors, and optical, electrical, and magnetic devices. LDHs also have a great potential as an energy conversion device, a key component in common modern electronics. Although LDHs are theoretically predicted to be centrosymmetric, we report here the first observations of the flexoelectric nature of LDHs and demonstrate their potential as an effective energy conversion material. We clearly show a linear energy conversion relationship between the output powers and curvature radius via bending with both the LDH nanosheets and thin films, revealing a direct evidence for flexoelectric effects. These findings potentially open up avenues to incorporate a flexoelectric coupling phenomenon into centrosymmetric materials such as LDHs and to harvest high-power energy using LDH nanosheets. In the present study, for enhancement of the output power, Zn-Al:LDH nanosheets were composited with piezoelectric CH3NH3PbI3 (MAPbI3) dye films and their enhanced energy harvesting was demonstrated in detail. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=layered%20double%20hydroxides" title="layered double hydroxides">layered double hydroxides</a>, <a href="https://publications.waset.org/abstracts/search?q=flexoelectric" title=" flexoelectric"> flexoelectric</a>, <a href="https://publications.waset.org/abstracts/search?q=piezoelectric" title=" piezoelectric"> piezoelectric</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20harvesting" title=" energy harvesting "> energy harvesting </a> </p> <a href="https://publications.waset.org/abstracts/60228/enhanced-energy-powers-via-composites-of-piezoelectric-ch3nh3pbi3-and-flexoelectric-zn-allayered-double-hydroxides-ldh-nanosheets" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60228.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">492</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">411</span> Determination of Concentrated State Using Multiple EEG Channels</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tae%20Jin%20Choi">Tae Jin Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Jong%20Ok%20Kim"> Jong Ok Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Sang%20Min%20Jin"> Sang Min Jin</a>, <a href="https://publications.waset.org/abstracts/search?q=Gilwon%20Yoon"> Gilwon Yoon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Analysis of EEG brainwave provides information on mental or emotional states. One of the particular states that can have various applications in human machine interface (HMI) is concentration. 8-channel EEG signals were measured and analyzed. The concentration index was compared during resting and concentrating periods. Among eight channels, locations the frontal lobe (Fp1 and Fp2) showed a clear increase of the concentration index during concentration regardless of subjects. The rest six channels produced conflicting observations depending on subjects. At this time, it is not clear whether individual difference or how to concentrate made these results for the rest six channels. Nevertheless, it is expected that Fp1 and Fp2 are promising locations for extracting control signal for HMI applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=concentration" title="concentration">concentration</a>, <a href="https://publications.waset.org/abstracts/search?q=EEG" title=" EEG"> EEG</a>, <a href="https://publications.waset.org/abstracts/search?q=human%20machine%20interface" title=" human machine interface"> human machine interface</a>, <a href="https://publications.waset.org/abstracts/search?q=biophysical" title=" biophysical"> biophysical</a> </p> <a href="https://publications.waset.org/abstracts/13664/determination-of-concentrated-state-using-multiple-eeg-channels" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13664.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">482</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">410</span> Design of Middleware for Mobile Group Control in Physical Proximity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Moon-Tak%20Oh">Moon-Tak Oh</a>, <a href="https://publications.waset.org/abstracts/search?q=Kyung-Min%20Park"> Kyung-Min Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Tae-Eun%20Yoon"> Tae-Eun Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Hoon%20Choi"> Hoon Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Chil-Woo%20Lee"> Chil-Woo Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper is about middle-ware which enables group-user applications on mobile devices in physical proximity to interact with other devices without intervention of a central server. Requirements of the middle-ware are identified from service usage scenarios, and the functional architecture of the middle-ware is specified. These requirements include group management, synchronization, and resource management. Group Management needs to provide various capabilities to such applications with respect to managing multiple users (e.g., creation of groups, discovery of group or individual users, member join/leave, election of a group manager and service-group association) using D2D communication technology. We designed the middle-ware for the above requirements on the Android platform. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=group%20user" title="group user">group user</a>, <a href="https://publications.waset.org/abstracts/search?q=middleware" title=" middleware"> middleware</a>, <a href="https://publications.waset.org/abstracts/search?q=mobile%20service" title=" mobile service"> mobile service</a>, <a href="https://publications.waset.org/abstracts/search?q=physical%20proximity" title=" physical proximity"> physical proximity</a> </p> <a href="https://publications.waset.org/abstracts/2331/design-of-middleware-for-mobile-group-control-in-physical-proximity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2331.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">506</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">409</span> Effect of Laser Ablation OTR Films on the Storability of Endive and Pak Choi by Baby Vegetables in Modified Atmosphere Condition</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=In-Lee%20Choi">In-Lee Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Min%20Jae%20Jeong"> Min Jae Jeong</a>, <a href="https://publications.waset.org/abstracts/search?q=Jun%20Pill%20Baek"> Jun Pill Baek</a>, <a href="https://publications.waset.org/abstracts/search?q=Ho-Min%20Kang"> Ho-Min Kang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As the consumption trends of vegetables become different from the past, it is increased using vegetable more convenience such as fresh-cut vegetables, sprouts, baby vegetables rather than an existing hole piece of vegetables. Selected baby vegetables have various functional materials but they have short shelf life. This study was conducted to improve storability by using suitable laser ablation OTR (oxygen transmission rate) films. Baby vegetable of endive (Cichorium endivia L.) and pak choi (Brassica rapa chinensis) for this research, around 10 cm height, cultivated in glass greenhouse during 3 weeks. Harvested endive and pak choi were stored at 8 ℃ for 5 days and were packed by PP (Polypropylene) container and covered different types of laser ablation OTR film (DaeRyung Co., Ltd.) such as 1,300 cc, 10,000 cc, 20,000 cc, 40,000 cc /m2•day•atm, and control (perforated film) with heat sealing machine (SC200-IP, Kumkang, Korea). All the samples conducted 5 times replication. Statistical analysis was carried out using a Microsoft Excel 2010 program and results were expressed as standard deviations. The fresh weight loss rate of both baby vegetables were less than 0.3 % in treated films as maximum weight loss rate. On the other hands, control in the final storage day had around 3.0 % weight loss rate and it followed decreasing quantity. Endive had less 2.0 % carbon dioxide contents as maximum contents in 20,000 cc and 40,000 cc. Oxygen contents was maintained between 17 and 20 % in endive, 19 and 20 % in pak choi. Ethylene concentration of both vegetables maintained little lower contents in 20,000 cc treatments than others at final storage day without statistical significance. In the case of hardness, 40,000 cc film was shown little higher value at both baby vegetables without statistical significance. Visual quality was good at 10,000 cc and 20,000 cc in endive and pak choi, and off-flavor was not appeard any off-flavor in both vegetables. Chlorophyll (SPAD-502, Minolta, Japan) value of endive was shown as similar result with initial in all treatments except 20,000 cc as little lower. And chlorophyll value of pak choi decreased in all treatments compared with initial value but was not shown significantly difference each other. Color of leaves (CR-400, Minolta, Japan) changed significantly in 40,000 cc at endive. In an event of pak choi, all the treatments started yellowing by increasing hunter b value, among them control increased substantially. As above the result, 10,000 cc film was most reasonable packaging film for storing at endive and 20,000 cc at pak choi with good quality. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20dioxide" title="carbon dioxide">carbon dioxide</a>, <a href="https://publications.waset.org/abstracts/search?q=shelf-life" title=" shelf-life"> shelf-life</a>, <a href="https://publications.waset.org/abstracts/search?q=visual%20quality" title=" visual quality"> visual quality</a>, <a href="https://publications.waset.org/abstracts/search?q=pak%20choi" title=" pak choi"> pak choi</a> </p> <a href="https://publications.waset.org/abstracts/20815/effect-of-laser-ablation-otr-films-on-the-storability-of-endive-and-pak-choi-by-baby-vegetables-in-modified-atmosphere-condition" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20815.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">789</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">408</span> A Study on the Non-Destructive Test Characterization of Carbon Fiber Reinforced Plastics Using Thermo-Graphic Camera</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hee%20Jae%20Shin">Hee Jae Shin</a>, <a href="https://publications.waset.org/abstracts/search?q=In%20Pyo%20Cha"> In Pyo Cha</a>, <a href="https://publications.waset.org/abstracts/search?q=Min%20Sang%20Lee"> Min Sang Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyun%20Kyung%20Yoon"> Hyun Kyung Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Tae%20Ho%20Kim"> Tae Ho Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoon%20Sun%20Lee"> Yoon Sun Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Lee%20Ku%20Kwac"> Lee Ku Kwac</a>, <a href="https://publications.waset.org/abstracts/search?q=Hong%20Gun%20Kim"> Hong Gun Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Non-destructive testing and evaluation techniques for assessing the integrity of composite structures are essential to both reduce manufacturing costs and out of service time of transport means due to maintenance. In this study, Analyze into non-destructive test characterization of carbon fiber reinforced plastics(CFRP) internal and external defects using thermo-graphic camera and transient thermography method. non-destructive testing were characterized by defect size(∅8,∅10,∅12,∅14) and depth(1.2mm,2.4mm). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Non-Destructive%20Test%20%28NDT%29" title="Non-Destructive Test (NDT)">Non-Destructive Test (NDT)</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20characteristic" title=" thermal characteristic"> thermal characteristic</a>, <a href="https://publications.waset.org/abstracts/search?q=thermographic%20camera" title=" thermographic camera"> thermographic camera</a>, <a href="https://publications.waset.org/abstracts/search?q=Carbon%20Fiber%20Reinforced%20Plastics%28CFRP%29." title=" Carbon Fiber Reinforced Plastics(CFRP)."> Carbon Fiber Reinforced Plastics(CFRP).</a> </p> <a href="https://publications.waset.org/abstracts/20078/a-study-on-the-non-destructive-test-characterization-of-carbon-fiber-reinforced-plastics-using-thermo-graphic-camera" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20078.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">535</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">407</span> Characteristics of Butterfly Communities according to Habitat Types of Jeongmaek in Korea</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ji-Suk%20Kim">Ji-Suk Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Dong-Pil%20Kim"> Dong-Pil Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Kee-Rae%20Gang"> Kee-Rae Gang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoon%20Ho%20Choi"> Yoon Ho Choi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study was conducted to investigate the characteristics of butterfly communities according to the habitat characteristics of Korean veins. The survey sites were 12 mountains located in the vein, and 12~30 quadrats (200 in total) were set. The species richness and biodiversity were different according to land use type. Two types of land use (forest and graveyard) showed lower species diversity index values than other land use types. The species abundance was low in the forest and graveyards, and grasslands, forest tops, cultivated areas and urban areas showed relatively high species richness. The altitude was not statistically significant with the number of species of butterflies and biodiversity index. The degree of canopy closure showed a negative correlation. As a result of interspecific correlation analysis, it was confirmed that there was a very high correlation (R2=0.746) between Lycaena phlaeas and Pseudozizeeria maha argia, Choaspes benjaminii japonica and Argyronome ruslana. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=land%20use%20type" title="land use type">land use type</a>, <a href="https://publications.waset.org/abstracts/search?q=species%20diversity%20index" title=" species diversity index"> species diversity index</a>, <a href="https://publications.waset.org/abstracts/search?q=correlation" title=" correlation"> correlation</a>, <a href="https://publications.waset.org/abstracts/search?q=canopy%20closure" title=" canopy closure"> canopy closure</a> </p> <a href="https://publications.waset.org/abstracts/92508/characteristics-of-butterfly-communities-according-to-habitat-types-of-jeongmaek-in-korea" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92508.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">160</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">406</span> Influence of Ligature Tightening on Bone Fracture Risk in Interspinous Process Surgery</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dae%20Kyung%20Choi">Dae Kyung Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Won%20Man%20Park"> Won Man Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Kyungsoo%20Kim"> Kyungsoo Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoon%20Hyuk%20Kim"> Yoon Hyuk Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The interspinous process devices have been recently used due to its advantages such as minimal invasiveness and less subsidence of the implant to the osteoporotic bone. In this paper, we have analyzed the influences of ligature tightening of several interspinous process devices using finite element analysis. Four types of interspinous process implants were inserted to the L3-4 spinal motion segment based on their surgical protocols. Inferior plane of L4 vertebra was fixed and 7.5 Nm of extension moment were applied on superior plane of L3 vertebra with 400N of compressive load along follower load direction and pretension of the ligature. The stability of the spinal unit was high enough than that of intact model. The higher value of pretension in the ligature led the decrease of dynamic stabilization effect in cases of the WallisTM, DiamTM, Viking, and Spear®. The results of present study could be used to evaluate surgical option and validate the biomechanical characteristics of the spinal implants. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=interspinous%20process%20device" title="interspinous process device">interspinous process device</a>, <a href="https://publications.waset.org/abstracts/search?q=bone%20fracture%20risk" title=" bone fracture risk"> bone fracture risk</a>, <a href="https://publications.waset.org/abstracts/search?q=lumbar%20spine" title=" lumbar spine"> lumbar spine</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20analysis" title=" finite element analysis "> finite element analysis </a> </p> <a href="https://publications.waset.org/abstracts/17346/influence-of-ligature-tightening-on-bone-fracture-risk-in-interspinous-process-surgery" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17346.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">400</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">405</span> Calculation of Detection Efficiency of Horizontal Large Volume Source Using Exvol Code</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Y.%20Kang">M. Y. Kang</a>, <a href="https://publications.waset.org/abstracts/search?q=Euntaek%20Yoon"> Euntaek Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20D.%20Choi"> H. D. Choi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> To calculate the full energy (FE) absorption peak efficiency for arbitrary volume sample, we developed and verified the EXVol (Efficiency calculator for EXtended Voluminous source) code which is based on effective solid angle method. EXVol is possible to describe the source area as a non-uniform three-dimensional (x, y, z) source. And decompose and set it into several sets of volume units. Users can equally divide (x, y, z) coordinate system to calculate the detection efficiency at a specific position of a cylindrical volume source. By determining the detection efficiency for differential volume units, the total radiative absolute distribution and the correction factor of the detection efficiency can be obtained from the nondestructive measurement of the source. In order to check the performance of the EXVol code, Si ingot of 20 cm in diameter and 50 cm in height were used as a source. The detector was moved at the collimation geometry to calculate the detection efficiency at a specific position and compared with the experimental values. In this study, the performance of the EXVol code was extended to obtain the detection efficiency distribution at a specific position in a large volume source. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=attenuation" title="attenuation">attenuation</a>, <a href="https://publications.waset.org/abstracts/search?q=EXVol" title=" EXVol"> EXVol</a>, <a href="https://publications.waset.org/abstracts/search?q=detection%20efficiency" title=" detection efficiency"> detection efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=volume%20source" title=" volume source"> volume source</a> </p> <a href="https://publications.waset.org/abstracts/97158/calculation-of-detection-efficiency-of-horizontal-large-volume-source-using-exvol-code" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/97158.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">185</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">404</span> Lifetime Assessment of Highly Efficient Metal-Based Air-Diffuser through Accelerated Degradation Test</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jinyoung%20Choi">Jinyoung Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tae-Ho%20Yoon"> Tae-Ho Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Sunmook%20Lee"> Sunmook Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Degradation of standard oxygen transfer efficiency (SOTE) with time was observed for the assessment of lifetime of metal-based air-diffuser, which displaced a polymer composite-based air-diffuser in order to attain a longer lifetime in the actual field. The degradation of air-diffuser occurred due to the failure of the formation of small and uniform air bubbles since the patterns formed on the disc of air-diffuser deteriorated and/or changed from their initial shapes while they were continuously exposed to the air blowing condition during the operation in the field. Therefore, the lifetime assessment of metal-based air-diffuser was carried out through an accelerated degradation test by accelerating the air-blowing conditions in 200 L/min, 300 L/min, and 400 L/min and the lifetime of normal operating condition at 120 L/min was predicted. It was found that Weibull distribution was the most proper one for describing the lifetime distribution of metal-based air-diffuser in the present study. The shape and scale parameters indicated that the accelerated blowing conditions were all within the acceleration domain. The lifetime was predicted by adopting inverse power model for a stress-life relationship and estimated to be B10=94,004 hrs with CL=95%. Acknowledgement: This work was financially supported by the Ministry of Trade, Industry and Energy (Grant number: N0001475). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=accelerated%20degradation%20test" title="accelerated degradation test">accelerated degradation test</a>, <a href="https://publications.waset.org/abstracts/search?q=air-diffuser" title=" air-diffuser"> air-diffuser</a>, <a href="https://publications.waset.org/abstracts/search?q=lifetime%20assessment" title=" lifetime assessment"> lifetime assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=SOTE" title=" SOTE"> SOTE</a> </p> <a href="https://publications.waset.org/abstracts/64857/lifetime-assessment-of-highly-efficient-metal-based-air-diffuser-through-accelerated-degradation-test" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/64857.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">562</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">403</span> A Study on Solutions to Connect Distribution Power Grid up to Renewable Energy Sources at KEPCO</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seung%20Yoon%20Hyun">Seung Yoon Hyun</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyeong%20Seung%20An"> Hyeong Seung An</a>, <a href="https://publications.waset.org/abstracts/search?q=Myeong%20Ho%20Choi"> Myeong Ho Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sung%20Hwan%20Bae"> Sung Hwan Bae</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu%20Jong%20Sim"> Yu Jong Sim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In 2015, the southern part of the Korean Peninsula has 8.6 million poles, 1.25 million km power lines, and 2 million transformers, etc. It is the massive amount of distribution equipments which could cover a round-trip distance from the earth to the moon and 11 turns around the earth. These distribution equipments are spread out like capillaries and supplying power to every corner of the Korean Peninsula. In order to manage these huge power facility efficiently, KEPCO use DAS (Distribution Automation System) to operate distribution power system since 1997. DAS is integrated system that enables to remotely supervise and control breakers and switches on distribution network. Using DAS, we can reduce outage time and power loss. KEPCO has about 160,000 switches, 50%(about 80,000) of switches are automated, and 41 distribution center monitoring&control these switches 24-hour 365 days to get the best efficiency of distribution networks. However, the rapid increasing renewable energy sources become the problem in the efficient operation of distributed power system. (currently 2,400 MW, 75,000 generators operate in distribution power system). In this paper, it suggests the way to interconnect between renewable energy source and distribution power system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=distribution" title="distribution">distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=renewable" title=" renewable"> renewable</a>, <a href="https://publications.waset.org/abstracts/search?q=connect" title=" connect"> connect</a>, <a href="https://publications.waset.org/abstracts/search?q=DAS%20%28Distribution%20Automation%20System%29" title=" DAS (Distribution Automation System)"> DAS (Distribution Automation System)</a> </p> <a href="https://publications.waset.org/abstracts/45103/a-study-on-solutions-to-connect-distribution-power-grid-up-to-renewable-energy-sources-at-kepco" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45103.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">621</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">402</span> Postharvest Losses and Handling Improvement of Organic Pak-Choi and Choy Sum </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pichaya%20Poonlarp">Pichaya Poonlarp</a>, <a href="https://publications.waset.org/abstracts/search?q=Danai%20Boonyakiat"> Danai Boonyakiat</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Chuamuangphan"> C. Chuamuangphan</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Chanta"> M. Chanta</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Current consumers’ behavior trends have changed towards more health awareness, the well-being of society and interest of nature and environment. The Royal Project Foundation is, therefore, well aware of organic agriculture. The project only focused on using natural products and utilizing its highland biological merits to increase resistance to diseases and insects for the produce grown. The project also brought in basic knowledge from a variety of available research information, including, but not limited to, improvement of soil fertility and a control of plant insects with biological methods in order to lay a foundation in developing and promoting farmers to grow quality produce with a high health safety. This will finally lead to sustainability for future highland agriculture and a decrease of chemical use on the highland area which is a source of natural watershed. However, there are still shortcomings of the postharvest management in term of quality and losses, such as bruising, rottenness, wilting and yellowish leaves. These losses negatively affect the maintenance and a shelf life of organic vegetables. Therefore, it is important that a research study of the appropriate and effective postharvest management is conducted for an individual organic vegetable to minimize product loss and find root causes of postharvest losses which would contribute to future postharvest management best practices. This can be achieved through surveys and data collection from postharvest processes in order to conduct analysis for causes of postharvest losses of organic pak-choi, baby pak-choi, and choy sum. Consequently, postharvest losses reduction strategies of organic vegetables can be achieved. In this study, postharvest losses of organic pak choi, baby pak-choi, and choy sum were determined at each stage of the supply chain starting from the field after harvesting, at the Development Center packinghouse, at Chiang Mai packinghouse, at Bangkok packing house and at the Royal Project retail shop in Chiang Mai. The results showed that postharvest losses of organic pak-choi, baby pak-choi, and choy sum were 86.05, 89.05 and 59.03 percent, respectively. The main factors contributing to losses of organic vegetables were due to mechanical damage and underutilized parts and/or short of minimum quality standard. Good practices had been developed after causes of losses were identified. Appropriate postharvest handling and management, for example, temperature control, hygienic cleaning, and reducing the duration of the supply chain, postharvest losses of all organic vegetables should be able to remarkably reduced postharvest losses in the supply chain. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=postharvest%20losses" title="postharvest losses">postharvest losses</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20vegetables" title=" organic vegetables"> organic vegetables</a>, <a href="https://publications.waset.org/abstracts/search?q=handling%20improvement" title=" handling improvement"> handling improvement</a>, <a href="https://publications.waset.org/abstracts/search?q=shelf%20life" title=" shelf life"> shelf life</a>, <a href="https://publications.waset.org/abstracts/search?q=supply%20chain" title=" supply chain"> supply chain</a> </p> <a href="https://publications.waset.org/abstracts/92052/postharvest-losses-and-handling-improvement-of-organic-pak-choi-and-choy-sum" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92052.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">475</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">401</span> Design of a Simple Smart Greenhouse for Optimized Pak choi Cultivation in Rural Tropical Areas</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dedie%20Tooy">Dedie Tooy</a>, <a href="https://publications.waset.org/abstracts/search?q=Rio%20Kolibu"> Rio Kolibu</a>, <a href="https://publications.waset.org/abstracts/search?q=Rio%20Putra"> Rio Putra</a>, <a href="https://publications.waset.org/abstracts/search?q=Herry%20Frits%20Pinatik"> Herry Frits Pinatik</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20P.%20M.%20Ludong"> Daniel P. M. Ludong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study presents the design and development of a smart greenhouse prototype tailored to optimize Pak choi (Brassica chinensis L.) cultivation in tropical rural climates. Pak choi, a high-demand leafy vegetable in Indonesia, often experiences suboptimal growth due to elevated temperatures and humidity. The objective of this research is to design and develop an intelligent greenhouse to optimize pak choi cultivation in tropical rural climates. The design of a smart greenhouse provides a controlled environment to stabilize these conditions, but managing fluctuating temperature, humidity, and light in tropical regions remains challenging. This system regulates critical environmental factors, including temperature, humidity, irrigation system, and light, creating optimal conditions for Pak Choi. The prototype's effectiveness was evaluated by monitoring growth indicators such as leaf weight, freshness, and moisture content, alongside the consistency of the internal climate compared to external conditions. Results indicate that the smart greenhouse supports superior crop growth, enhances yield quality, and reduces environmental resource consumption. The irrigation control system test was carried out for 40 days. Researchers observed the results of the automatic system working according to the sensor value readings. The results of the temperature control system test work: when the air temperature in the greenhouse is more than 33 degrees, the condensation pump will turn on, and when the temperature is below 32 degrees, the pump will automatically turn itself off. The cycle repeats continuously. The results achieved pak coy can live up to 40 days. As part of our ongoing research, we are actively considering integrating double-layered roofs to improve insulation and reduce external temperature fluctuations, which could further enhance the effectiveness of the smart greenhouse. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=smart%20greenhouse" title="smart greenhouse">smart greenhouse</a>, <a href="https://publications.waset.org/abstracts/search?q=horticulture" title=" horticulture"> horticulture</a>, <a href="https://publications.waset.org/abstracts/search?q=rural%20tropical%20climate" title=" rural tropical climate"> rural tropical climate</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20agriculture" title=" sustainable agriculture"> sustainable agriculture</a> </p> <a href="https://publications.waset.org/abstracts/195110/design-of-a-simple-smart-greenhouse-for-optimized-pak-choi-cultivation-in-rural-tropical-areas" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/195110.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">5</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">400</span> A Study on Analysis of Magnetic Field in Induction Generator for Small Francis Turbine Generator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Young-Kwan%20Choi">Young-Kwan Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Han-Sang%20Jeong"> Han-Sang Jeong</a>, <a href="https://publications.waset.org/abstracts/search?q=Yeon-Ho%20Ok"> Yeon-Ho Ok</a>, <a href="https://publications.waset.org/abstracts/search?q=Jae-Ho%20Choi"> Jae-Ho Choi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this study is to verify validity of design by testing output of induction generator through finite element analysis before manufacture of induction generator designed. Characteristics in the operating domain of induction generator can be understood through analysis of magnetic field according to load (rotational speed) of induction generator. Characteristics of induction generator such as induced voltage, current, torque, magnetic flux density (magnetic flux saturation), and loss can be predicted by analysis of magnetic field. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electromagnetic%20analysis" title="electromagnetic analysis">electromagnetic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=induction%20generator" title=" induction generator"> induction generator</a>, <a href="https://publications.waset.org/abstracts/search?q=small%20hydro%20power%20generator" title=" small hydro power generator"> small hydro power generator</a>, <a href="https://publications.waset.org/abstracts/search?q=small%20francis%20turbine%20generator" title=" small francis turbine generator"> small francis turbine generator</a> </p> <a href="https://publications.waset.org/abstracts/32296/a-study-on-analysis-of-magnetic-field-in-induction-generator-for-small-francis-turbine-generator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32296.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">1475</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">399</span> Antidiabetic Effects of Bitter Melon</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jinhyun%20Ryu">Jinhyun Ryu</a>, <a href="https://publications.waset.org/abstracts/search?q=Chengliang%20Xie"> Chengliang Xie</a>, <a href="https://publications.waset.org/abstracts/search?q=Nal%20Ae%20Yoon"> Nal Ae Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Dong%20Hoon%20Lee"> Dong Hoon Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Gu%20Seob%20Roh"> Gu Seob Roh</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyun%20Joon%20Kim"> Hyun Joon Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Gyeong%20Jae%20Cho"> Gyeong Jae Cho</a>, <a href="https://publications.waset.org/abstracts/search?q=Wan%20Sung%20Choi"> Wan Sung Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sang%20Soo%20Kang"> Sang Soo Kang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Type 2 diabetes is a heterogeneous group of metabolic disorders featured by a deficit in or loss of insulin activity to maintain normal glucose homeostasis. Mainly, it results from the compromised insulin secretion and/or reduced insulin activity. The frequency of type 2 diabetes (T2D) has been increased rapidly in recent decades with the increase in the trend of obesity due to life style and food habit. Obesity is considered to be the primary risk factor for the development of insulin resistance and thereby developing T2D. Traditionally naturally occurring fruits, vegetables etc. are being used to treat many pathogenic conditions. In this study, we tried to find out the effect of a popularly used vegetable in Bangladesh and several other Asian countries, ‘bitter melon’ on high fat diet induced T2D. To investigate the effect, we used 70% ethanol extract of bitter melon (BME) as dietary supplement with chow. BME was found to attenuate the high fat diet (HFD) induced body weight and total fat mass significantly. We also observed that BME reduced the insulin resistance induced by HFD effectively. Furthermore, dietary supplementation of BME was highly effective in increasing insulin sensitivity, and reducing the hepatic fat and obesity. These results indicate that BME could be effective to attenuate T2D and could be a preventive measure against T2D. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bitter%20melon" title="bitter melon">bitter melon</a>, <a href="https://publications.waset.org/abstracts/search?q=obesity" title=" obesity"> obesity</a>, <a href="https://publications.waset.org/abstracts/search?q=type%202%20diabetes" title=" type 2 diabetes"> type 2 diabetes</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20fat%20diet" title=" high fat diet"> high fat diet</a> </p> <a href="https://publications.waset.org/abstracts/41779/antidiabetic-effects-of-bitter-melon" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41779.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">358</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">398</span> Optimum Design of Combine Threshing Cylinder for Soybean Harvest</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Choi%20Duckkyu">Choi Duckkyu</a>, <a href="https://publications.waset.org/abstracts/search?q=Choi%20Yong"> Choi Yong</a>, <a href="https://publications.waset.org/abstracts/search?q=Kang%20Taegyoung"> Kang Taegyoung</a>, <a href="https://publications.waset.org/abstracts/search?q=Jun%20Hyeonjong"> Jun Hyeonjong</a>, <a href="https://publications.waset.org/abstracts/search?q=Choi%20Ilsu"> Choi Ilsu</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyun%20Changsik"> Hyun Changsik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study was carried out to develop a soybean combine thresher that enables to reduce the damage rate of soybean threshing and the rate of unthreshing. The combine threshing cylinder was developed with 6 circular axis at each end and fixed with disc plates. It was attached to the prototype combine thresher. A combine thresher that has a cylinder with circular rod type threshing pegs was used for a comparative test. A series of comparative tests were conducted using dae-won soybean. The test of the soybean thresher was performed at the cylinder speeds of 210, 240, 270 and 300 rpm, and with the concave clearance of 10, 13 and 16 mm. The separating positions of soybean after threshing were researched on a separate box with 4 sections. The soybean positions of front, center, rear and rear outside, of 59.5%, 30.6%, 7.8% and 2.2% respectively, were obtained. At the cylinder speeds from 210 rpm to 300 rpm, the damage rate of soybean was increased from 0.1% to 4.2% correspondingly to speeds. The unthreshed rate of soybean under the same condition was increased from 0.9% to 4.1% correspondingly to speeds. 0.7% of the damage rate and 1.5% of the unthreshed rate was achieved at the cylinder speed of 240 rpm and with the concave clearance of 10 mm. For Daewon soybean, an optimum cylinder speed of 240 rpm and the concave clearance of 10 mm were identified. These results will be useful for the design, construction, and operation of soybean threshing harvesters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=soybean%20harvest" title="soybean harvest">soybean harvest</a>, <a href="https://publications.waset.org/abstracts/search?q=combine%20threshing" title=" combine threshing"> combine threshing</a>, <a href="https://publications.waset.org/abstracts/search?q=threshing%20cylinder" title=" threshing cylinder"> threshing cylinder</a>, <a href="https://publications.waset.org/abstracts/search?q=optimum%20design" title=" optimum design"> optimum design</a> </p> <a href="https://publications.waset.org/abstracts/23993/optimum-design-of-combine-threshing-cylinder-for-soybean-harvest" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23993.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">530</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">397</span> Does the Perceived Value of a National Park Increases Visitor Satisfaction and Loyalty?</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yoo-Shik%20Yoon">Yoo-Shik Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Hae-Kyung%20Sohn"> Hae-Kyung Sohn</a>, <a href="https://publications.waset.org/abstracts/search?q=Young-Hae%20Yoon"> Young-Hae Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Hai-Long%20Cui"> Hai-Long Cui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study focused on tourist subjects who have experience visiting national parks in Korea. The reason for selecting national parks as the subject of this study was that many Koreans visit national parks on weekends, and their visits continue even as changes are made to the parks. The purpose of this study was to evaluate what type of value perceived by tourists who visit national parks positively influences their satisfaction. Concurrently, the relationship between satisfaction and future behavioral intention was also examined. The understanding and analysis of this relationship is very important for the success of destination tourism development. This analysis can contribute to the creation of a marketing strategy that will induce tourists to stay longer, revisit, and recommend a national park to others. If national park administrators fully utilize the study results, they will be able to increase the number of visitors to their national parks. Furthermore, the results of this study will contribute to the development of Korean national parks as a tourist destination. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=national%20park" title="national park">national park</a>, <a href="https://publications.waset.org/abstracts/search?q=visitor%20satisfaction" title=" visitor satisfaction"> visitor satisfaction</a>, <a href="https://publications.waset.org/abstracts/search?q=loyalty" title=" loyalty"> loyalty</a>, <a href="https://publications.waset.org/abstracts/search?q=tourism%20management" title=" tourism management"> tourism management</a> </p> <a href="https://publications.waset.org/abstracts/13788/does-the-perceived-value-of-a-national-park-increases-visitor-satisfaction-and-loyalty" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13788.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">459</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">396</span> Zero Valent Iron Algal Biocomposite for the Removal of Crystal Violet from Aqueous Solution: Box-Behnken Optimization and Fixed Bed Column Studies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Jerold">M. Jerold</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Sivasubramanian"> V. Sivasubramanian</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, nano zero valent iron Sargassum swartzii (nZVI-SS) biocomposite a marine algal based biosorbent was used for the removal of simulated crystal violet (CV) in batch and continuous fixed bed operation. The Box-Behnen design (BBD) experimental results revealed the biosoprtion was maximum at pH 7.5, biosorbent dosage 0.1 g/L and initial CV concentration of 100 mg/L. The effect of various column parameters like bed depth (3, 6 and 9 cm), flow rate (5, 10 and 15 mL/min) and influent CV concentration (5, 10 and 15 mg/L) were investigated. The exhaustion time increased with increase of bed depth, influent CV concentration and decrease of flow rate. Adam-Bohart, Thomas and Yoon-Nelson models were used to predict the breakthrough curve and to evaluate the model parameters. Out of these models, Thomas and Yoon-Nelson models well described the experimental data. Therefore, the result implies that nZVI-SS biocomposite is a cheap and most promising biosorbent for the removal of CV from wastewater. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=algae" title="algae">algae</a>, <a href="https://publications.waset.org/abstracts/search?q=biosorption" title=" biosorption"> biosorption</a>, <a href="https://publications.waset.org/abstracts/search?q=zero-valent" title=" zero-valent"> zero-valent</a>, <a href="https://publications.waset.org/abstracts/search?q=dye" title=" dye"> dye</a>, <a href="https://publications.waset.org/abstracts/search?q=wastewater" title=" wastewater"> wastewater</a> </p> <a href="https://publications.waset.org/abstracts/114454/zero-valent-iron-algal-biocomposite-for-the-removal-of-crystal-violet-from-aqueous-solution-box-behnken-optimization-and-fixed-bed-column-studies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/114454.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">196</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">395</span> Structural Analysis of Multi-Pressure Integrated Vessel for Sport-Multi-Artificial Environment System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Joon-Ho%20Lee">Joon-Ho Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Jeong-Hwan%20Yoon"> Jeong-Hwan Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Jung-Hwan%20Yoon"> Jung-Hwan Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Sangmo%20Kang"> Sangmo Kang</a>, <a href="https://publications.waset.org/abstracts/search?q=Su-Yeon%20Hong"> Su-Yeon Hong</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyun-Woo%20Jeong"> Hyun-Woo Jeong</a>, <a href="https://publications.waset.org/abstracts/search?q=Jaeick%20Chae"> Jaeick Chae</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There are several dedicated individual chambers for sports that are supplied and used, but none of them are multi-pressured all-in-one chambers that can provide a sports multi-environment simultaneously. In this study, we design a multi-pressure (positive/atmospheric/negative pressure) integrated vessel that can be used for the sport-multi-artificial environment system. We presented additional vessel designs with enlarged space for the tall users; with reinforcement pads added to reduce the maximum stress in the joints of its shells, and then carried out numerical analysis for the structural analysis with maximum stress and structural safety. Under the targeted allowable pressure conditions, maximum stresses occurred at the joint of the shell, and the entrance, the safety of the structure was checked with the allowable stress of its material. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=structural%20analysis" title="structural analysis">structural analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-pressure" title=" multi-pressure"> multi-pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=integrated%20vessel" title=" integrated vessel"> integrated vessel</a>, <a href="https://publications.waset.org/abstracts/search?q=sport-multi-artificial%20environment" title=" sport-multi-artificial environment"> sport-multi-artificial environment</a> </p> <a href="https://publications.waset.org/abstracts/89981/structural-analysis-of-multi-pressure-integrated-vessel-for-sport-multi-artificial-environment-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/89981.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">532</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">394</span> A Study on Human Musculoskeletal Model for Cycle Fitting: Comparison with EMG</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yoon-%20Ho%20Shin">Yoon- Ho Shin</a>, <a href="https://publications.waset.org/abstracts/search?q=Jin-Seung%20Choi"> Jin-Seung Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Dong-Won%20Kang"> Dong-Won Kang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jeong-Woo%20Seo"> Jeong-Woo Seo</a>, <a href="https://publications.waset.org/abstracts/search?q=Joo-Hack%20Lee"> Joo-Hack Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Ju-Young%20Kim"> Ju-Young Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Dae-Hyeok%20Kim"> Dae-Hyeok Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Seung-Tae%20Yang"> Seung-Tae Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Gye-Rae%20Tack"> Gye-Rae Tack </a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is difficult to study the effect of various variables on cycle fitting through actual experiment. To overcome such difficulty, the forward dynamics of a musculoskeletal model was applied to cycle fitting in this study. The measured EMG data were compared with the muscle activities of the musculoskeletal model through forward dynamics. EMG data were measured from five cyclists who do not have musculoskeletal diseases during three minutes pedaling with a constant load (150 W) and cadence (90 RPM). The muscles used for the analysis were the Vastus Lateralis (VL), Tibialis Anterior (TA), Bicep Femoris (BF), and Gastrocnemius Medial (GM). Person’s correlation coefficients of the muscle activity patterns, the peak timing of the maximum muscle activities, and the total muscle activities were calculated and compared. BIKE3D model of AnyBody (Anybodytech, Denmark) was used for the musculoskeletal model simulation. The comparisons of the actual experiments with the simulation results showed significant correlations in the muscle activity patterns (VL: 0.789, TA: 0.503, BF: 0.468, GM: 0.670). The peak timings of the maximum muscle activities were distributed at particular phases. The total muscle activities were compared with the normalized muscle activities, and the comparison showed about 10% difference in the VL (+10%), TA (+9.7%), and BF (+10%), excluding the GM (+29.4%). Thus, it can be concluded that muscle activities of model & experiment showed similar results. The results of this study indicated that it was possible to apply the simulation of further improved musculoskeletal model to cycle fitting. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=musculoskeletal%20modeling" title="musculoskeletal modeling">musculoskeletal modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=EMG" title=" EMG"> EMG</a>, <a href="https://publications.waset.org/abstracts/search?q=cycle%20fitting" title=" cycle fitting"> cycle fitting</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a> </p> <a href="https://publications.waset.org/abstracts/20629/a-study-on-human-musculoskeletal-model-for-cycle-fitting-comparison-with-emg" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20629.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">568</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">393</span> Metabolic Predictive Model for PMV Control Based on Deep Learning</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eunji%20Choi">Eunji Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Borang%20Park"> Borang Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Youngjae%20Choi"> Youngjae Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Jinwoo%20Moon"> Jinwoo Moon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, a predictive model for estimating the metabolism (MET) of human body was developed for the optimal control of indoor thermal environment. Human body images for indoor activities and human body joint coordinated values were collected as data sets, which are used in predictive model. A deep learning algorithm was used in an initial model, and its number of hidden layers and hidden neurons were optimized. Lastly, the model prediction performance was analyzed after the model being trained through collected data. In conclusion, the possibility of MET prediction was confirmed, and the direction of the future study was proposed as developing various data and the predictive model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=deep%20learning" title="deep learning">deep learning</a>, <a href="https://publications.waset.org/abstracts/search?q=indoor%20quality" title=" indoor quality"> indoor quality</a>, <a href="https://publications.waset.org/abstracts/search?q=metabolism" title=" metabolism"> metabolism</a>, <a href="https://publications.waset.org/abstracts/search?q=predictive%20model" title=" predictive model"> predictive model</a> </p> <a href="https://publications.waset.org/abstracts/93271/metabolic-predictive-model-for-pmv-control-based-on-deep-learning" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/93271.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">392</span> Suggestion of Two-Step Traction Therapy for Safer and More Effective Conservative Treatment for Low Back Pain </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Won%20Man%20Park">Won Man Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Dae%20Kyung%20Choi"> Dae Kyung Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Kyungsoo%20Kim"> Kyungsoo Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoon%20Hyuk%20Kim"> Yoon Hyuk Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Traction therapy has been used in the treatment of spinal pain for decades. However, a case study reported the occurrence of large disc protrusion during motorized traction therapy. In this study, we hypothesized that additional local decompression with a global axial traction could be helpful for risk reduction of intervertebral disc damage. A validated three dimensional finite element model of the lumbar spine was used. Two-step traction therapy using the axial global traction (the first step) with 1/3 body weight and the additional local decompression (the second step) with 7 mm translation of L4 spinal bone was determined for the traction therapy. During two-step traction therapy, the sacrum was constrained in all translational directions. Reduced lordosis angle by the global axial traction recovered with the additional local decompression. Stress on fibers of the annulus fibrosus by the axial global traction decreased with the local decompression by 17%~96% in the posterior region of intervertebral disc. Stresses on ligaments except anterior longitudinal ligaments in all motion segments decreased till 4.9 mm~5.6 mm translation of L4 spinal bone. The results of this study showed that the additional local decompression is very useful for reducing risk of damage in the intervertebral disc and ligaments caused by the global axial traction force. Moreover, the local decompression could be used to enhance reduction of intradiscal pressure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=lumbar%20spine" title="lumbar spine">lumbar spine</a>, <a href="https://publications.waset.org/abstracts/search?q=traction-therapy" title=" traction-therapy"> traction-therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=biomechanics" title=" biomechanics"> biomechanics</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20analysis" title=" finite element analysis"> finite element analysis</a> </p> <a href="https://publications.waset.org/abstracts/17341/suggestion-of-two-step-traction-therapy-for-safer-and-more-effective-conservative-treatment-for-low-back-pain" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17341.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">486</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">391</span> A Set of Microsatellite Markers for Population Genetics of Copper-Winged Bat (Myotis rufoniger) Using Saliva DNA</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Junghwa%20An">Junghwa An</a>, <a href="https://publications.waset.org/abstracts/search?q=Sungkyoung%20Choi"> Sungkyoung Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Eun%20Ye"> Eun Ye</a>, <a href="https://publications.waset.org/abstracts/search?q=San%20Hoon%20Han"> San Hoon Han</a>, <a href="https://publications.waset.org/abstracts/search?q=Young-Gun%20Choi"> Young-Gun Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Chul%20Oun%20Jung"> Chul Oun Jung</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The copper-winged bat (Myotis rufoniger) is the widely distributed medium body-sized bat in Asia, including Korea. This bat population has been decreasing because of habitat loss. This study reported the isolation and characterization of ten polymorphic microsatellite loci in endangered M. rufoniger. To do genetic studies, we use saliva DNA of bats during winter sleep period. The number of alleles per locus ranged from 2 to 9, and the observed and expected heterozygosities ranged from 0.063 to 0.750 and from 0.063 to 0.865, respectively. The average polymorphic information content (PIC) value of these markers was 0.37. Two loci of M. rufoniger showed departure from Hardy-Weinberg equilibrium(HWE). This demonstrated that the ten microsatellite loci can be used as genetic markers for further investigation of the copper-winged bat. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=copper-winged%20bat" title="copper-winged bat">copper-winged bat</a>, <a href="https://publications.waset.org/abstracts/search?q=microsatellite" title=" microsatellite"> microsatellite</a>, <a href="https://publications.waset.org/abstracts/search?q=population%20genetics" title=" population genetics"> population genetics</a>, <a href="https://publications.waset.org/abstracts/search?q=South%20Korea" title=" South Korea"> South Korea</a> </p> <a href="https://publications.waset.org/abstracts/46642/a-set-of-microsatellite-markers-for-population-genetics-of-copper-winged-bat-myotis-rufoniger-using-saliva-dna" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46642.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">373</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">390</span> A Study on Vitalization Factors of Itaewon Commercial Street-Focused on Itaewon-Ro</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Park">Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoon%20Hong"> Yoon Hong</a>, <a href="https://publications.waset.org/abstracts/search?q=Wang"> Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jung%20Kab"> Jung Kab</a>, <a href="https://publications.waset.org/abstracts/search?q=Choi%20Seong-Won"> Choi Seong-Won</a>, <a href="https://publications.waset.org/abstracts/search?q=Kim"> Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Hong%20Kyu"> Hong Kyu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Itaewon-Ro is a special place where the Seoul Metropolitan city designated as the fist are of tourism, specially with the commercial supremacy that foreigners may like. It is the place that grew with regional specialty. Study on the vitalization factors of commercialist were analyzed on consumer shop choice factor, Physical environment based on commercial supremacy vitalization, Functional side of the road and regional specialty. However, since Itaewon seemed to take great place in the cultural factor, Because of its regional specialty, Research was processed. This study is the analysis on the vitalization of Itaewon commercialist that looked for important factors with AHP analysis on consumers use as commercialist. Based on the field study and preceded study, top three factors were distinguished with physical factor, cultural factor, landscape factor, and thirteen detail contents were found. This study focused on the choice of the consumer and with a consumer-based questionnaire, we analyzed the importance of vitalization factors. Results of the research are shown in the following paragraphs. In the Itaewon commercial market, mostly women in the 20~30s were the main consumers for meeting and hopping. Vitalization category that the consumer thinks it most importantly was 'attraction', 'various businesses', and 'convenience of transportation'. 'Attraction that cannot be seen in other places', Which was chosen as the most important factor was judged that Itaewon holds cultural identity that is shown in the process of development, Instead of showing artificial and physical composition. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=commercialist" title="commercialist">commercialist</a>, <a href="https://publications.waset.org/abstracts/search?q=vitalization%20factor" title=" vitalization factor"> vitalization factor</a>, <a href="https://publications.waset.org/abstracts/search?q=regional%20specialty" title=" regional specialty"> regional specialty</a>, <a href="https://publications.waset.org/abstracts/search?q=cultural%20factor" title=" cultural factor"> cultural factor</a>, <a href="https://publications.waset.org/abstracts/search?q=AHP%20analysis" title=" AHP analysis"> AHP analysis</a> </p> <a href="https://publications.waset.org/abstracts/3613/a-study-on-vitalization-factors-of-itaewon-commercial-street-focused-on-itaewon-ro" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3613.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">422</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">389</span> Efficient Iterative V-BLAST Detection Technique in Wireless Communication System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hwan-Jun%20Choi">Hwan-Jun Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sung-Bok%20Choi"> Sung-Bok Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyoung-Kyu%20Song"> Hyoung-Kyu Song</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Recently, among the MIMO-OFDM detection techniques, a lot of papers suggested V-BLAST scheme which can achieve high data rate. Therefore, the signal detection of MIMOOFDM system is important issue. In this paper, efficient iterative VBLAST detection technique is proposed in wireless communication system. The proposed scheme adjusts the number of candidate symbol and iterative scheme based on channel state. According to the simulation result, the proposed scheme has better BER performance than conventional schemes and similar BER performance of the QRD-M with iterative scheme. Moreover complexity of proposed scheme has 50.6 % less than complexity of QRD-M detection with iterative scheme. Therefore the proposed detection scheme can be efficiently used in wireless communication. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=MIMO-OFDM" title="MIMO-OFDM">MIMO-OFDM</a>, <a href="https://publications.waset.org/abstracts/search?q=V-BLAST" title=" V-BLAST"> V-BLAST</a>, <a href="https://publications.waset.org/abstracts/search?q=QR-decomposition" title=" QR-decomposition"> QR-decomposition</a>, <a href="https://publications.waset.org/abstracts/search?q=QRDM" title=" QRDM"> QRDM</a>, <a href="https://publications.waset.org/abstracts/search?q=DFE" title=" DFE"> DFE</a>, <a href="https://publications.waset.org/abstracts/search?q=iterative%20scheme" title=" iterative scheme"> iterative scheme</a>, <a href="https://publications.waset.org/abstracts/search?q=channel%20condition" title=" channel condition"> channel condition</a> </p> <a href="https://publications.waset.org/abstracts/3522/efficient-iterative-v-blast-detection-technique-in-wireless-communication-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3522.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">530</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">388</span> Measurements of Flow Mixing Behaviors Using a Wire-Mesh Sensor in a Wire-Wrapped 37-Pin Rod Assembly</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hyungmo%20Kim">Hyungmo Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Hwang%20Bae"> Hwang Bae</a>, <a href="https://publications.waset.org/abstracts/search?q=Seok-Kyu%20Chang"> Seok-Kyu Chang</a>, <a href="https://publications.waset.org/abstracts/search?q=Dong%20Won%20Lee"> Dong Won Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Yung%20Joo%20Ko"> Yung Joo Ko</a>, <a href="https://publications.waset.org/abstracts/search?q=Sun%20Rock%20Choi"> Sun Rock Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hae%20Seob%20Choi"> Hae Seob Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyeon%20Seok%20Woo"> Hyeon Seok Woo</a>, <a href="https://publications.waset.org/abstracts/search?q=Dong-Jin%20Euh"> Dong-Jin Euh</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyeong-Yeon%20Lee"> Hyeong-Yeon Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Flow mixing characteristics in the wire-wrapped 37-pin rod bundle were measured by using a wire-mesh sensing system for a sodium-cooled fast reactor (SFR). The subchannel flow mixing in SFR core subchannels was an essential characteristic for verification of a core thermal design and safety analysis. A dedicated test facility including the wire-mesh sensor system and tracing liquid injection system was developed, and the conductivity fields at the end of 37-pin rod bundle were visualized in several different flow conditions. These experimental results represented the reasonable agreements with the results of CFD, and the uncertainty of the mixing experiments has been conducted to evaluate the experimental results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=core%20thermal%20design" title="core thermal design">core thermal design</a>, <a href="https://publications.waset.org/abstracts/search?q=flow%20mixing" title=" flow mixing"> flow mixing</a>, <a href="https://publications.waset.org/abstracts/search?q=a%20wire-mesh%20sensor" title=" a wire-mesh sensor"> a wire-mesh sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=a%20wire-wrap%20effect" title=" a wire-wrap effect"> a wire-wrap effect</a> </p> <a href="https://publications.waset.org/abstracts/23655/measurements-of-flow-mixing-behaviors-using-a-wire-mesh-sensor-in-a-wire-wrapped-37-pin-rod-assembly" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23655.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">629</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">387</span> Optimal Power Exchange of Multi-Microgrids with Hierarchical Coordination</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Beom-Ryeol%20Choi">Beom-Ryeol Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Won-Poong%20Lee"> Won-Poong Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Jin-Young%20Choi"> Jin-Young Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Young-Hak%20Shin"> Young-Hak Shin</a>, <a href="https://publications.waset.org/abstracts/search?q=Dong-Jun%20Won"> Dong-Jun Won</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A Microgrid (MG) has a major role in power system. There are numerous benefits, such as ability to reduce environmental impact and enhance the reliability of a power system. Hence, Multi-MG (MMG) consisted of multiple MGs is being studied intensively. This paper proposes the optimal power exchange of MMG with hierarchical coordination. The whole system architecture consists of two layers: 1) upper layer including MG of MG Center (MoMC) which is in charge of the overall management and coordination and 2) lower layer comprised of several Microgrid-Energy Management Systems (MG-EMSs) which make a decision for own schedule. In order to accomplish the optimal power exchange, the proposed coordination algorithm is applied to MMG system. The objective of this process is to achieve optimal operation for improving economics under the grid-connected operation. The simulation results show how the output of each MG can be changed through coordination algorithm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microgrids" title="microgrids">microgrids</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-microgrids" title=" multi-microgrids"> multi-microgrids</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20exchange" title=" power exchange"> power exchange</a>, <a href="https://publications.waset.org/abstracts/search?q=hierarchical%20coordination" title=" hierarchical coordination"> hierarchical coordination</a> </p> <a href="https://publications.waset.org/abstracts/72872/optimal-power-exchange-of-multi-microgrids-with-hierarchical-coordination" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72872.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">372</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">386</span> Surface Sterilization Retain Postharvest Quality and Shelf Life of Strawberry and Cherry Tomato during Modified Atmosphere Packaging</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ju%20Young%20Kim">Ju Young Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Zahirul%20Islam"> Mohammad Zahirul Islam</a>, <a href="https://publications.waset.org/abstracts/search?q=Mahmuda%20Akter%20Mele"> Mahmuda Akter Mele</a>, <a href="https://publications.waset.org/abstracts/search?q=Su%20Jeong%20Han"> Su Jeong Han</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyuk%20Sung%20Yoon"> Hyuk Sung Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=In-Lee%20Choi"> In-Lee Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ho-Min%20Kang"> Ho-Min Kang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Strawberry and tomato fruits were harvested at the red ripens maturity stage in the Republic of Korea. The fruits were dipped in fungi solution and afterwards were sterilized with sodium hypochlorite (NaOCl) and chlorine dioxide (ClO2) gas. Some fruits were dipped in 150μL/L NaOCl solution for 10 minutes, and others were treated with 5μL/L ClO2 gas for 12 hours and packed with 20,000 cc OTR (oxygen transmission rate) film, the rest were packed in 10,000 cc OTR film inserted with 5μL/L ClO2 gas. 5μL/L ClO2 gas insert treatment showed the lowest carbon dioxide and ethylene, and the highest oxygen concentration was on the final storage day (15th day) in both strawberry and tomato fruits. Tomato fruits showed the lowest fresh weight loss in 5μL/L ClO2 gas insert treatment. The visual quality as well as shelf life showed the highest in 5μL/L ClO2 gas insert treatment of both strawberry and tomato fruits. In addition, the fungal incidence of strawberry and tomato fruits were the most suppressed in 5μL/L ClO2 gas insert treatment. 5μL/L ClO2 gas insert treatment showed higher firmness and soluble solids in both strawberry and tomato fruits. So, 5μL/L ClO2 gas insert treatment may be useful to prevent the fungal incidence as well as retaining the postharvest quality, and increase the shelf life of strawberry and tomato fruits for long term storage. This study was supported by Export Promotion Technology Development Program (314027-03), IPET, Ministry of Agriculture, Food and Rural Affairs, Republic of Korea. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chlorine%20dioxide" title="chlorine dioxide">chlorine dioxide</a>, <a href="https://publications.waset.org/abstracts/search?q=ethylene" title=" ethylene"> ethylene</a>, <a href="https://publications.waset.org/abstracts/search?q=fungi" title=" fungi"> fungi</a>, <a href="https://publications.waset.org/abstracts/search?q=sodium%20hypochlorite" title=" sodium hypochlorite"> sodium hypochlorite</a> </p> <a href="https://publications.waset.org/abstracts/67444/surface-sterilization-retain-postharvest-quality-and-shelf-life-of-strawberry-and-cherry-tomato-during-modified-atmosphere-packaging" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67444.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">366</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">385</span> Computational Fluid Dynamics Simulation on Heat Transfer of Hot Air Bubble Injection into Water Column</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jae-Yeong%20Choi">Jae-Yeong Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Gyu-Mok%20Jeon"> Gyu-Mok Jeon</a>, <a href="https://publications.waset.org/abstracts/search?q=Jong-Chun%20Park"> Jong-Chun Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Yong-Jin%20Cho"> Yong-Jin Cho</a>, <a href="https://publications.waset.org/abstracts/search?q=Seok-Tae%20Yoon"> Seok-Tae Yoon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> When air flow is injected into water, bubbles are formed in various types inside the water pool along with the air flow rate. The bubbles are floated in equilibrium with forces such as buoyancy, surface tension and shear force. Single bubble generated at low flow rate maintains shape, but bubbles with high flow rate break up to make mixing and turbulence. In addition to this phenomenon, as the hot air bubbles are injected into the water, heat affects the interface of phases. Therefore, the main scope of the present work reveals how to proceed heat transfer between water and hot air bubbles injected into water. In the present study, a series of CFD simulation for the heat transfer of hot bubbles injected through a nozzle near the bottom in a cylindrical water column are performed using a commercial CFD software, STAR-CCM+. The governing equations for incompressible and viscous flow are the continuous and the RaNS (Reynolds- averaged Navier-Stokes) equations and discretized by the FVM (Finite Volume Method) manner. For solving multi-phase flow, the Eulerian multiphase model is employed and the interface is defined by VOF (Volume-of-Fluid) technique. As a turbulence model, the SST k-w model considering the buoyancy effects is introduced. For spatial differencing the 3th-order MUSCL scheme is adopted and the 2nd-order implicit scheme for time integration. As the results, the dynamic behavior of the rising hot bubbles with the flow rate injected and regarding heat transfer mechanism are discussed based on the simulation results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer" title="heat transfer">heat transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=hot%20bubble%20injection" title=" hot bubble injection"> hot bubble injection</a>, <a href="https://publications.waset.org/abstracts/search?q=eulerian%20multiphase%20model" title=" eulerian multiphase model"> eulerian multiphase model</a>, <a href="https://publications.waset.org/abstracts/search?q=flow%20rate" title=" flow rate"> flow rate</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD%20%28Computational%20Fluid%20Dynamics%29" title=" CFD (Computational Fluid Dynamics)"> CFD (Computational Fluid Dynamics)</a> </p> <a href="https://publications.waset.org/abstracts/87141/computational-fluid-dynamics-simulation-on-heat-transfer-of-hot-air-bubble-injection-into-water-column" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87141.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">152</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">384</span> Induction of G1 Arrest and Apoptosis in Human Cancer Cells by Panaxydol</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dong-Gyu%20Leem">Dong-Gyu Leem</a>, <a href="https://publications.waset.org/abstracts/search?q=Ji-Sun%20Shin"> Ji-Sun Shin</a>, <a href="https://publications.waset.org/abstracts/search?q=Sang%20Yoon%20Choi"> Sang Yoon Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Kyung-Tae%20Lee"> Kyung-Tae Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, we focused on the anti-proliferative effects of panaxydol, a C17 polyacetylenic compound derived from Panax ginseng roots, against various human cancer cells. We treated with panaxydol to various cancer cells and panaxydol treatment was found to significantly inhibit the proliferation of human lung cancer cells (A549) and human pancreatic cancer cells (AsPC-1 and MIA PaCa-2), of which AsPC-1 cells were most sensitive to its treatment. DNA flow cytometric analysis indicated that panaxydol blocked cell cycle progression at the G1 phase in A549 cells, which accompanied by a parallel reduction of protein expression of cyclin-dependent kinase (CDK) 2, CDK4, CDK6, cyclin D1 and cyclin E. CDK inhibitors (CDKIs), such as p21CIP1/WAF1 and p27KIP1, were gradually upregulated after panaxydol treatment at the protein levels. Furthermore, panaxydol induced the activation of p53 in A549 cells. In addition, panaxydol also induced apoptosis of AsPC-1 and MIA PaCa-2 cells, as shown by accumulation of subG1 and apoptotic cell populations. Panaxydol triggered the activation of caspase-3, -8, -9 and the cleavage of poly (ADP-ribose) polymerase (PARP). Reduction of mitochondrial transmembrane potential by panaxydol was determined by staining with dihexyloxacarbocyanine iodide. Furthermore, panaxydol suppressed the levels of anti-apoptotic proteins, XIAP and Bcl-2, and increased the levels of proapoptotic proteins, Bax and Bad. In addition, panaxydol inhibited the activation of Akt and extracellular signal-regulated kinase (ERK) and activated the p38 mitogen-activated protein kinase kinase (MAPK). Our results suggest that panaxydol is an anti-tumor compound that causes p53-mediated cell cycle arrest and apoptosis via mitochondrial apoptotic pathway in various cancer cells. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=apoptosis" title="apoptosis">apoptosis</a>, <a href="https://publications.waset.org/abstracts/search?q=cancer" title=" cancer"> cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=G1%20arrest" title=" G1 arrest"> G1 arrest</a>, <a href="https://publications.waset.org/abstracts/search?q=panaxydol" title=" panaxydol"> panaxydol</a> </p> <a href="https://publications.waset.org/abstracts/50141/induction-of-g1-arrest-and-apoptosis-in-human-cancer-cells-by-panaxydol" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50141.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">322</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">383</span> Continuous Fixed Bed Reactor Application for Decolourization of Textile Effluent by Adsorption on NaOH Treated Eggshell</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Chafi">M. Chafi</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Akazdam"> S. Akazdam</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Asrir"> C. Asrir</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Sebbahi"> L. Sebbahi</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Gourich"> B. Gourich</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Barka"> N. Barka</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Essahli"> M. Essahli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fixed bed adsorption has become a frequently used industrial application in wastewater treatment processes. Various low cost adsorbents have been studied for their applicability in treatment of different types of effluents. In this work, the intention of the study was to explore the efficacy and feasibility for azo dye, Acid Orange 7 (AO7) adsorption onto fixed bed column of NaOH Treated eggshell (TES). The effect of various parameters like flow rate, initial dye concentration, and bed height were exploited in this study. The studies confirmed that the breakthrough curves were dependent on flow rate, initial dye concentration solution of AO7 and bed depth. The Thomas, Yoon–Nelson, and Adams and Bohart models were analysed to evaluate the column adsorption performance. The adsorption capacity, rate constant and correlation coefficient associated to each model for column adsorption was calculated and mentioned. The column experimental data were fitted well with Thomas model with coefficients of correlation R2 ≥0.93 at different conditions but the Yoon–Nelson, BDST and Bohart–Adams model (R2=0.911), predicted poor performance of fixed-bed column. The (TES) was shown to be suitable adsorbent for adsorption of AO7 using fixed-bed adsorption column. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adsorption%20models" title="adsorption models">adsorption models</a>, <a href="https://publications.waset.org/abstracts/search?q=acid%20orange%207" title=" acid orange 7"> acid orange 7</a>, <a href="https://publications.waset.org/abstracts/search?q=bed%20depth" title=" bed depth"> bed depth</a>, <a href="https://publications.waset.org/abstracts/search?q=breakthrough" title=" breakthrough"> breakthrough</a>, <a href="https://publications.waset.org/abstracts/search?q=dye%20adsorption" title=" dye adsorption"> dye adsorption</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed-bed%20column" title=" fixed-bed column"> fixed-bed column</a>, <a href="https://publications.waset.org/abstracts/search?q=treated%20eggshell" title=" treated eggshell"> treated eggshell</a> </p> <a href="https://publications.waset.org/abstracts/43408/continuous-fixed-bed-reactor-application-for-decolourization-of-textile-effluent-by-adsorption-on-naoh-treated-eggshell" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43408.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">377</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=Yoon%20Ho%20Choi&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Yoon%20Ho%20Choi&page=3">3</a></li> <li class="page-item"><a class="page-link" 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