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Watanabe</title> <meta name="description" content="Search results for: Kajiro Watanabe"> <meta name="keywords" content="Kajiro Watanabe"> <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 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Kajiro Watanabe"> <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> 32</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Kajiro Watanabe</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">32</span> A Novel NRIS Index to Evaluate Brain Activity in Prefrontal Regions While Listening to First and Second Languages for Long Time Periods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kensho%20Takahashi">Kensho Takahashi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ko%20Watanabe"> Ko Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Takashi%20Kaburagi"> Takashi Kaburagi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroshi%20Tanaka"> Hiroshi Tanaka</a>, <a href="https://publications.waset.org/abstracts/search?q=Kajiro%20Watanabe"> Kajiro Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Yosuke%20Kurihara"> Yosuke Kurihara </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Near-infrared spectroscopy (NIRS) has been widely used as a non-invasive method to measure brain activity, but it is corrupted by baseline drift noise. Here we present a method to measure regional cerebral blood flow as a derivative of NIRS output. We investigate whether, when listening to languages, blood flow can reasonably localize and represent regional brain activity or not. The prefrontal blood flow distribution pattern when advanced second-language listeners listened to a second language (L2) was most similar to that when listening to their first language (L1) among the patterns of mean and standard deviation. In experiments with 25 healthy subjects, the maximum blood flow was localized to the left BA46 of advanced listeners. The blood flow presented is robust to baseline drift and stably localizes regional brain activity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=NIRS" title="NIRS">NIRS</a>, <a href="https://publications.waset.org/abstracts/search?q=oxy-hemoglobin" title=" oxy-hemoglobin"> oxy-hemoglobin</a>, <a href="https://publications.waset.org/abstracts/search?q=baseline%20drift" title=" baseline drift"> baseline drift</a>, <a href="https://publications.waset.org/abstracts/search?q=blood%20flow" title=" blood flow"> blood flow</a>, <a href="https://publications.waset.org/abstracts/search?q=working%20memory" title=" working memory"> working memory</a>, <a href="https://publications.waset.org/abstracts/search?q=BA46" title=" BA46"> BA46</a>, <a href="https://publications.waset.org/abstracts/search?q=first%20language" title=" first language"> first language</a>, <a href="https://publications.waset.org/abstracts/search?q=second%20language" title=" second language"> second language</a> </p> <a href="https://publications.waset.org/abstracts/22459/a-novel-nris-index-to-evaluate-brain-activity-in-prefrontal-regions-while-listening-to-first-and-second-languages-for-long-time-periods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22459.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">558</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">31</span> Evaluation Using a Bidirectional Microphone as a Pressure Pulse Wave Meter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shunsuke%20Fujiwara">Shunsuke Fujiwara</a>, <a href="https://publications.waset.org/abstracts/search?q=Takashi%20Kaburagi"> Takashi Kaburagi</a>, <a href="https://publications.waset.org/abstracts/search?q=Kazuyuki%20Kobayashi"> Kazuyuki Kobayashi</a>, <a href="https://publications.waset.org/abstracts/search?q=Kajiro%20Watanabe"> Kajiro Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Yosuke%20Kurihara"> Yosuke Kurihara</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper describes a novel sensor device, a pressure pulse wave meter, which uses a bidirectional condenser microphone. The microphone work as a microphone as well as a sensor with high gain over a wide frequency range; they are also highly reliable and economical. Currently aging is becoming a serious social issue in Japan causing increased medical expenses in the country. Hence, it is important for elderly citizens to check health condition at home, and to care the health conditions through daily monitoring. Given this circumstances, we developed a novel pressure pulse wave meter based on a bidirectional condenser microphone. This novel pressure pulse wave meter device is used as a measuring instrument of health conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bidirectional%20microphone" title="bidirectional microphone">bidirectional microphone</a>, <a href="https://publications.waset.org/abstracts/search?q=pressure%20pulse%20wave%20meter" title=" pressure pulse wave meter"> pressure pulse wave meter</a>, <a href="https://publications.waset.org/abstracts/search?q=health%20condition" title=" health condition"> health condition</a>, <a href="https://publications.waset.org/abstracts/search?q=novel%20sensor%20device" title=" novel sensor device"> novel sensor device</a> </p> <a href="https://publications.waset.org/abstracts/28575/evaluation-using-a-bidirectional-microphone-as-a-pressure-pulse-wave-meter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28575.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">552</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">30</span> Switched Uses of a Bidirectional Microphone as a Microphone and Sensors with High Gain and Wide Frequency Range</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Toru%20Shionoya">Toru Shionoya</a>, <a href="https://publications.waset.org/abstracts/search?q=Yosuke%20Kurihara"> Yosuke Kurihara</a>, <a href="https://publications.waset.org/abstracts/search?q=Takashi%20Kaburagi"> Takashi Kaburagi</a>, <a href="https://publications.waset.org/abstracts/search?q=Kajiro%20Watanabe"> Kajiro Watanabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Mass-produced bidirectional microphones have attractive characteristics. They work as a microphone as well as a sensor with high gain over a wide frequency range; they are also highly reliable and economical. We present novel multiple functional uses of the microphones. A mathematical model for explaining the high-pass-filtering characteristics of bidirectional microphones was presented. Based on the model, the characteristics of the microphone were investigated, and a novel use for the microphone as a sensor with a wide frequency range was presented. In this study, applications for using the microphone as a security sensor and a human biosensor were introduced. The mathematical model was validated through experiments, and the feasibility of the abovementioned applications for security monitoring and the biosignal monitoring were examined through experiments. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bidirectional%20microphone" title="bidirectional microphone">bidirectional microphone</a>, <a href="https://publications.waset.org/abstracts/search?q=low-frequency" title=" low-frequency"> low-frequency</a>, <a href="https://publications.waset.org/abstracts/search?q=mathematical%20model" title=" mathematical model"> mathematical model</a>, <a href="https://publications.waset.org/abstracts/search?q=frequency%20response" title=" frequency response"> frequency response</a> </p> <a href="https://publications.waset.org/abstracts/17138/switched-uses-of-a-bidirectional-microphone-as-a-microphone-and-sensors-with-high-gain-and-wide-frequency-range" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17138.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">544</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">29</span> Development of Scratching Monitoring System Based on Mathematical Model of Unconstrained Bed Sensing Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Takuya%20Sumi">Takuya Sumi</a>, <a href="https://publications.waset.org/abstracts/search?q=Syoko%20Nukaya"> Syoko Nukaya</a>, <a href="https://publications.waset.org/abstracts/search?q=Takashi%20Kaburagi"> Takashi Kaburagi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroshi%20Tanaka"> Hiroshi Tanaka</a>, <a href="https://publications.waset.org/abstracts/search?q=Kajiro%20Watanabe"> Kajiro Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Yosuke%20Kurihara"> Yosuke Kurihara</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We propose an unconstrained measurement system for scratching motion based on mathematical model of unconstrained bed sensing method which could measure the bed vibrations due to the motion of the person on the bed. In this paper, we construct mathematical model of the unconstrained bed monitoring system, and we apply the unconstrained bed sensing method to the system for detecting scratching motion. The proposed sensors are placed under the three bed feet. When the person is lying on the bed, the output signals from the sensors are proportional to the magnitude of the vibration due to the scratching motion. Hence, we could detect the subject’s scratching motion from the output signals from ceramic sensors. We evaluated two scratching motions using the proposed system in the validity experiment as follows: First experiment is the subject’s scratching the right side cheek with his right hand, and; second experiment is the subject’s scratching the shin with another foot. As the results of the experiment, we recognized the scratching signals that enable the determination when the scratching occurred. Furthermore, the difference among the amplitudes of the output signals enabled us to estimate where the subject scratched. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=unconstrained%20bed%20sensing%20method" title="unconstrained bed sensing method">unconstrained bed sensing method</a>, <a href="https://publications.waset.org/abstracts/search?q=scratching" title=" scratching"> scratching</a>, <a href="https://publications.waset.org/abstracts/search?q=body%20movement" title=" body movement"> body movement</a>, <a href="https://publications.waset.org/abstracts/search?q=itchy" title=" itchy"> itchy</a>, <a href="https://publications.waset.org/abstracts/search?q=piezoceramics" title=" piezoceramics"> piezoceramics</a> </p> <a href="https://publications.waset.org/abstracts/1382/development-of-scratching-monitoring-system-based-on-mathematical-model-of-unconstrained-bed-sensing-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1382.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">410</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28</span> Analysis of Brain Activities due to Differences in Running Shoe Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kei%20Okubo">Kei Okubo</a>, <a href="https://publications.waset.org/abstracts/search?q=Yosuke%20Kurihara"> Yosuke Kurihara</a>, <a href="https://publications.waset.org/abstracts/search?q=Takashi%20Kaburagi"> Takashi Kaburagi</a>, <a href="https://publications.waset.org/abstracts/search?q=Kajiro%20Watanabe"> Kajiro Watanabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Many of the ever-growing elderly population require exercise, such as running, for health management. One important element of a runner’s training is the choice of shoes for exercise; shoes are important because they provide the interface between the feet and road. When we purchase shoes, we may instinctively choose a pair after trying on many different pairs of shoes. Selecting the shoes instinctively may work, but it does not guarantee a suitable fit for running activities. Therefore, if we could select suitable shoes for each runner from the viewpoint of brain activities, it would be helpful for validating shoe selection. In this paper, we describe how brain activities show different characteristics during particular task, corresponding to different properties of shoes. Using five subjects, we performed a verification experiment, applying weight, softness, and flexibility as shoe properties. In order to affect the shoe property’s differences to the brain, subjects run for ten min. Before and after running, subjects conducted a paced auditory serial addition task (PASAT) as the particular task; and the subjects’ brain activities during the PASAT are evaluated based on oxyhemoglobin and deoxyhemoglobin relative concentration changes, measured by near-infrared spectroscopy (NIRS). When the brain works actively, oxihemoglobin and deoxyhemoglobin concentration drastically changes; therefore, we calculate the maximum values of concentration changes. In order to normalize relative concentration changes after running, the maximum value are divided by before running maximum value as evaluation parameters. The classification of the groups of shoes is expressed on a self-organizing map (SOM). As a result, deoxyhemoglobin can make clusters for two of the three types of shoes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=brain%20activities" title="brain activities">brain activities</a>, <a href="https://publications.waset.org/abstracts/search?q=NIRS" title=" NIRS"> NIRS</a>, <a href="https://publications.waset.org/abstracts/search?q=PASAT" title=" PASAT"> PASAT</a>, <a href="https://publications.waset.org/abstracts/search?q=running%20shoes" title=" running shoes"> running shoes</a> </p> <a href="https://publications.waset.org/abstracts/16935/analysis-of-brain-activities-due-to-differences-in-running-shoe-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16935.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">27</span> Acoustic Finite Element Analysis of a Slit Model with Consideration of Air Viscosity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Sasajima">M. Sasajima</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Watanabe"> M. Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Yamaguchi%20Y.%20Kurosawa"> T. Yamaguchi Y. Kurosawa</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Koike"> Y. Koike</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In very narrow pathways, the speed of sound propagation and the phase of sound waves change due to the air viscosity. We have developed a new Finite Element Method (FEM) that includes the effects of air viscosity for modeling a narrow sound pathway. This method is developed as an extension of the existing FEM for porous sound-absorbing materials. The numerical calculation results for several three-dimensional slit models using the proposed FEM are validated against existing calculation methods. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=simulation" title="simulation">simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=FEM" title=" FEM"> FEM</a>, <a href="https://publications.waset.org/abstracts/search?q=air%20viscosity" title=" air viscosity"> air viscosity</a>, <a href="https://publications.waset.org/abstracts/search?q=slit" title=" slit"> slit</a> </p> <a href="https://publications.waset.org/abstracts/2501/acoustic-finite-element-analysis-of-a-slit-model-with-consideration-of-air-viscosity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2501.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">369</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">26</span> FEM Analysis of an Occluded Ear Simulator with Narrow Slit Pathway</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Manabu%20Sasajima">Manabu Sasajima</a>, <a href="https://publications.waset.org/abstracts/search?q=Takao%20Yamaguchi"> Takao Yamaguchi</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoshio%20Koike"> Yoshio Koike</a>, <a href="https://publications.waset.org/abstracts/search?q=Mitsuharu%20Watanabe"> Mitsuharu Watanabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper discusses the propagation of sound waves in air, specifically in narrow rectangular pathways of an occluded-ear simulator for acoustic measurements. In narrow pathways, both the speed of sound and the phase of the sound waves are affected by the damping of the air viscosity. Herein, we propose a new finite-element method (FEM) that considers the effects of the air viscosity. The method was developed as an extension of existing FEMs for porous, sound-absorbing materials. The results of a numerical calculation for a three-dimensional ear-simulator model using the proposed FEM were validated by comparing with theoretical lumped-parameter modeling analysis and standard values. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ear%20simulator" title="ear simulator">ear simulator</a>, <a href="https://publications.waset.org/abstracts/search?q=FEM" title=" FEM"> FEM</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=viscosity" title=" viscosity"> viscosity</a> </p> <a href="https://publications.waset.org/abstracts/30896/fem-analysis-of-an-occluded-ear-simulator-with-narrow-slit-pathway" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30896.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">443</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">25</span> Combustion Analysis of Suspended Sodium Droplet </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20Watanabe">T. Watanabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Combustion analysis of suspended sodium droplet is performed by solving numerically the Navier-Stokes equations and the energy conservation equations. The combustion model consists of the pre-ignition and post-ignition models. The reaction rate for the pre-ignition model is based on the chemical kinetics, while that for the post-ignition model is based on the mass transfer rate of oxygen. The calculated droplet temperature is shown to be in good agreement with the existing experimental data. The temperature field in and around the droplet is obtained as well as the droplet shape variation, and the present numerical model is confirmed to be effective for the combustion analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=analysis" title="analysis">analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=combustion" title=" combustion"> combustion</a>, <a href="https://publications.waset.org/abstracts/search?q=droplet" title=" droplet"> droplet</a>, <a href="https://publications.waset.org/abstracts/search?q=sodium" title=" sodium"> sodium</a> </p> <a href="https://publications.waset.org/abstracts/81861/combustion-analysis-of-suspended-sodium-droplet" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/81861.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">211</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">24</span> Effects of ECCS on the Cold-Leg Fluid Temperature during SGTR Accidents</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tadashi%20Watanabe">Tadashi Watanabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The LSTF experiment simulating the SGTR accident at the Mihama Unit-2 reactor is analyzed using the RELAP5/MOD3.3 code. In the accident and thus in the experiment, the ECC water was injected not only into the cold legs but into the upper plenum. Overall transients during the experiment such as pressures and fluid temperatures are simulated well by the code. The cold-leg fluid temperatures are shown to decrease if the upper plenum injection system is connected to the cold leg. It is found that the cold-leg fluid temperatures also decrease if the upper-plenum injection is not used and the cold-leg injection alone is actuated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=SGTR" title="SGTR">SGTR</a>, <a href="https://publications.waset.org/abstracts/search?q=LSTF" title=" LSTF"> LSTF</a>, <a href="https://publications.waset.org/abstracts/search?q=RELAP5" title=" RELAP5"> RELAP5</a>, <a href="https://publications.waset.org/abstracts/search?q=ECCS" title=" ECCS"> ECCS</a> </p> <a href="https://publications.waset.org/abstracts/30723/effects-of-eccs-on-the-cold-leg-fluid-temperature-during-sgtr-accidents" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30723.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">666</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">23</span> Waste Management in a Hot Laboratory of Japan Atomic Energy Agency – 2: Condensation and Solidification Experiments on Liquid Waste</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sou%20Watanabe">Sou Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiromichi%20Ogi"> Hiromichi Ogi</a>, <a href="https://publications.waset.org/abstracts/search?q=Atsuhiro%20Shibata"> Atsuhiro Shibata</a>, <a href="https://publications.waset.org/abstracts/search?q=Kazunori%20Nomura"> Kazunori Nomura</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As a part of STRAD project conducted by JAEA, condensation of radioactive liquid waste containing various chemical compounds using reverse osmosis (RO) membrane filter was examined for efficient and safety treatment of the liquid wastes accumulated inside hot laboratories. NH<sub>4</sub><sup>+</sup> ion in the feed solution was successfully concentrated, and NH<sub>4</sub><sup>+</sup> ion involved in the effluents became lower than target value; 100 ppm. Solidification of simulated aqueous and organic liquid wastes was also tested. Those liquids were successfully solidified by adding cement or coagulants. Nevertheless, optimization in materials for confinement of chemicals is required for long time storage of the final solidified wastes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=condensation" title="condensation">condensation</a>, <a href="https://publications.waset.org/abstracts/search?q=radioactive%20liquid%20waste" title=" radioactive liquid waste"> radioactive liquid waste</a>, <a href="https://publications.waset.org/abstracts/search?q=solidification" title=" solidification"> solidification</a>, <a href="https://publications.waset.org/abstracts/search?q=STRAD%20project" title=" STRAD project"> STRAD project</a> </p> <a href="https://publications.waset.org/abstracts/104557/waste-management-in-a-hot-laboratory-of-japan-atomic-energy-agency-2-condensation-and-solidification-experiments-on-liquid-waste" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104557.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">158</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">22</span> Comparison of Two-Phase Critical Flow Models for Estimation of Leak Flow Rate through Cracks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tadashi%20Watanabe">Tadashi Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Jinya%20Katsuyama"> Jinya Katsuyama</a>, <a href="https://publications.waset.org/abstracts/search?q=Akihiro%20Mano"> Akihiro Mano</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The estimation of leak flow rates through narrow cracks in structures is of importance for nuclear reactor safety, since the leak flow could be detected before occurrence of loss-of-coolant accidents. The two-phase critical leak flow rates are calculated using the system analysis code, and two representative non-homogeneous critical flow models, Henry-Fauske model and Ransom-Trapp model, are compared. The pressure decrease and vapor generation in the crack, and the leak flow rates are found to be larger for the Henry-Fauske model. It is shown that the leak flow rates are not affected by the structural temperature, but affected largely by the roughness of crack surface. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=crack" title="crack">crack</a>, <a href="https://publications.waset.org/abstracts/search?q=critical%20flow" title=" critical flow"> critical flow</a>, <a href="https://publications.waset.org/abstracts/search?q=leak" title=" leak"> leak</a>, <a href="https://publications.waset.org/abstracts/search?q=roughness" title=" roughness"> roughness</a> </p> <a href="https://publications.waset.org/abstracts/114282/comparison-of-two-phase-critical-flow-models-for-estimation-of-leak-flow-rate-through-cracks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/114282.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">180</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">21</span> Effect of the Hardness of Spacer Agent on Structural Properties of Metallic Scaffolds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20%20Khodaei">Mohammad Khodaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Mahmood%20%20Meratien"> Mahmood Meratien</a>, <a href="https://publications.waset.org/abstracts/search?q=Alireza%20Valanezhad"> Alireza Valanezhad</a>, <a href="https://publications.waset.org/abstracts/search?q=Serdar%20Pazarlioglu"> Serdar Pazarlioglu</a>, <a href="https://publications.waset.org/abstracts/search?q=Serdar%20Salman"> Serdar Salman</a>, <a href="https://publications.waset.org/abstracts/search?q=Ikuya%20Watanabe"> Ikuya Watanabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Pore size and morphology plays a crucial role on mechanical properties of porous scaffolds. In this research, titanium scaffold was prepared using space holder technique. Sodium chloride and ammonium bicarbonate were utilized as spacer agent separately. The effect of the hardness of spacer on the cell morphology was investigated using scanning electron microscopy (SEM) and optical stereo microscopy. Image analyzing software was used to interpret the microscopic images quantitatively. It was shown that sodium chloride, due to its higher hardness, maintain its morphology during cold compaction, and cause better replication in porous scaffolds. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Spacer" title="Spacer">Spacer</a>, <a href="https://publications.waset.org/abstracts/search?q=Titanium%20Scaffold" title=" Titanium Scaffold"> Titanium Scaffold</a>, <a href="https://publications.waset.org/abstracts/search?q=Pore%20Morphology" title=" Pore Morphology"> Pore Morphology</a>, <a href="https://publications.waset.org/abstracts/search?q=Space%20Holder%20Technique" title=" Space Holder Technique"> Space Holder Technique</a> </p> <a href="https://publications.waset.org/abstracts/66028/effect-of-the-hardness-of-spacer-agent-on-structural-properties-of-metallic-scaffolds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/66028.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">289</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">20</span> Radiation Dosimetry Using Sintered Pellets of Yellow Beryl (Heliodor) Crystals</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lucas%20S%C3%A1tiro%20Do%20Carmo">Lucas Sátiro Do Carmo</a>, <a href="https://publications.waset.org/abstracts/search?q=Betzabel%20Noemi%20Silva%20Carrera"> Betzabel Noemi Silva Carrera</a>, <a href="https://publications.waset.org/abstracts/search?q=Shigueo%20Watanabe"> Shigueo Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20F.%20D.%20Chubaci"> J. F. D. Chubaci</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Beryl is a silicate with chemical formula Be₃Al₂(SiO₃)₆ commonly found in Brazil. It has a few colored variations used as jewelry, like Aquamarine (blueish), Emerald (green) and Heliodor (yellow). The color of each variation depends on the dopant that is naturally present in the crystal lattice. In this work, Heliodor pellets of 5 mm diameter and 1 mm thickness have been produced and investigated using thermoluminescence (TL) to evaluate its potential for use as gamma ray’s dosimeter. The results show that the pellets exhibited a prominent TL peak at 205 °C that grows linearly with dose when irradiated from 1 Gy to 1000 Gy. A comparison has been made between powdered and sintered dosimeters. The results show that sintered pellets have higher sensitivity than powder dosimeter. The TL response of this mineral is satisfactory for radiation dosimetry applications in the studied dose range. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dosimetry" title="dosimetry">dosimetry</a>, <a href="https://publications.waset.org/abstracts/search?q=beryl" title=" beryl"> beryl</a>, <a href="https://publications.waset.org/abstracts/search?q=gamma%20rays" title=" gamma rays"> gamma rays</a>, <a href="https://publications.waset.org/abstracts/search?q=sintered%20pellets" title=" sintered pellets"> sintered pellets</a>, <a href="https://publications.waset.org/abstracts/search?q=new%20material" title=" new material"> new material</a> </p> <a href="https://publications.waset.org/abstracts/157397/radiation-dosimetry-using-sintered-pellets-of-yellow-beryl-heliodor-crystals" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157397.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">96</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">19</span> A Quantification Method of Attractiveness of Stations and an Estimation Method of Number of Passengers Taking into Consideration the Attractiveness of the Station</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Naoya%20Ozaki">Naoya Ozaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Takuya%20Watanabe"> Takuya Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Ryosuke%20Matsumoto"> Ryosuke Matsumoto</a>, <a href="https://publications.waset.org/abstracts/search?q=Noriko%20Fukasawa"> Noriko Fukasawa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the metropolitan areas in Japan, in many stations, shopping areas are set up, and escalators and elevators are installed to make the stations be barrier-free. Further, many areas around the stations are being redeveloped. Railway business operators want to know how much effect these circumstances have on attractiveness of the station or number of passengers using the station. So, we performed a questionnaire survey of the station users in the metropolitan areas for finding factors to affect the attractiveness of stations. Then, based on the analysis of the survey, we developed a method to quantitatively evaluate attractiveness of the stations. We also developed an estimation method for number of passengers based on combination of attractiveness of the station quantitatively evaluated and the residential and labor population around the station. Then, we derived precise linear regression models estimating the attractiveness of the station and number of passengers of the station. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=attractiveness%20of%20the%20station" title="attractiveness of the station">attractiveness of the station</a>, <a href="https://publications.waset.org/abstracts/search?q=estimation%20method" title=" estimation method"> estimation method</a>, <a href="https://publications.waset.org/abstracts/search?q=number%20of%20passengers%20of%20the%20station" title=" number of passengers of the station"> number of passengers of the station</a>, <a href="https://publications.waset.org/abstracts/search?q=redevelopment%20around%20the%20station" title=" redevelopment around the station"> redevelopment around the station</a>, <a href="https://publications.waset.org/abstracts/search?q=renovation%20of%20the%20station" title=" renovation of the station"> renovation of the station</a> </p> <a href="https://publications.waset.org/abstracts/56406/a-quantification-method-of-attractiveness-of-stations-and-an-estimation-method-of-number-of-passengers-taking-into-consideration-the-attractiveness-of-the-station" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56406.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">287</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">18</span> Analysis of Vapor-Phase Diffusion of Benzene from Contaminated Soil</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Asma%20A.%20Parlin">Asma A. Parlin</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Nakamura"> K. Nakamura</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Watanabe"> N. Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Komai"> T. Komai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Understanding the effective diffusion of benzene vapor in the soil-atmosphere interface is important as an intrusion of benzene into the atmosphere from the soil is largely driven by diffusion. To analyze the vertical one dimensional effective diffusion of benzene vapor in porous medium with high water content, diffusion experiments were conducted in soil columns using Andosol soil and Toyoura silica sand with different water content; for soil water content was from 0 to 30 wt.% and for sand it was from 0.06 to 10 wt.%. In soil, a linear relation was found between water content and effective diffusion coefficient while the effective diffusion coefficient didn’t change in the sand with increasing water. A numerical transport model following unsteady-state approaches based on Fick’s second law was used to match the required time for a steady state of the gas phase concentration profile of benzene to the experimentally measured concentration profile gas phase in the column. The result highlighted that both the water content and porosity might increase vertical diffusion of benzene vapor in soil. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=benzene%20vapor-phase" title="benzene vapor-phase">benzene vapor-phase</a>, <a href="https://publications.waset.org/abstracts/search?q=effective%20diffusion" title=" effective diffusion"> effective diffusion</a>, <a href="https://publications.waset.org/abstracts/search?q=subsurface%20soil%20medium" title=" subsurface soil medium"> subsurface soil medium</a>, <a href="https://publications.waset.org/abstracts/search?q=unsteady%20state" title=" unsteady state"> unsteady state</a> </p> <a href="https://publications.waset.org/abstracts/111757/analysis-of-vapor-phase-diffusion-of-benzene-from-contaminated-soil" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/111757.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">143</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">17</span> Nonlinear Impact Responses for a Damped Frame Supported by Nonlinear Springs with Hysteresis Using Fast FEA</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20Yamaguchi">T. Yamaguchi</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Watanabe"> M. Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Sasajima"> M. Sasajima</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Yuan"> C. Yuan</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Maruyama"> S. Maruyama</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20B.%20Ibrahim"> T. B. Ibrahim</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Tomita"> H. Tomita</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper deals with nonlinear vibration analysis using finite element method for frame structures consisting of elastic and viscoelastic damping layers supported by multiple nonlinear concentrated springs with hysteresis damping. The frame is supported by four nonlinear concentrated springs near the four corners. The restoring forces of the springs have cubic non-linearity and linear component of the nonlinear springs has complex quantity to represent linear hysteresis damping. The damping layer of the frame structures has complex modulus of elasticity. Further, the discretized equations in physical coordinate are transformed into the nonlinear ordinary coupled differential equations using normal coordinate corresponding to linear natural modes. Comparing shares of strain energy of the elastic frame, the damping layer and the springs, we evaluate the influences of the damping couplings on the linear and nonlinear impact responses. We also investigate influences of damping changed by stiffness of the elastic frame on the nonlinear coupling in the damped impact responses. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dynamic%20response" title="dynamic response">dynamic response</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20impact%20response" title=" nonlinear impact response"> nonlinear impact response</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20analysis" title=" finite element analysis"> finite element analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20analysis" title=" numerical analysis"> numerical analysis</a> </p> <a href="https://publications.waset.org/abstracts/15947/nonlinear-impact-responses-for-a-damped-frame-supported-by-nonlinear-springs-with-hysteresis-using-fast-fea" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15947.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">434</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">16</span> UV Enhanced Hydrophilicity of the Anodized Films Formed at Low Current Density and Low Voltage</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Phanawan%20Whangdee">Phanawan Whangdee</a>, <a href="https://publications.waset.org/abstracts/search?q=Tomoaki%20Watanabe"> Tomoaki Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Viritpon%20Srimaneepong"> Viritpon Srimaneepong</a>, <a href="https://publications.waset.org/abstracts/search?q=Dujreutai%20Pongkao%20Kashima"> Dujreutai Pongkao Kashima</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The anodized films formed at high current density or high voltage have been widely prepared for dental implant because it can improve the hydrophilicity to the film. Our attempt is exploring whether low current density and low voltage could enhance the good hydrophilicity to the anodized films or not. Furthermore, UV irradiation would be one of the key factor to enhance their hydrophilicity. The anodized films were performed at low current density of 2 mA/cm2 in 1M H3PO4, 1 mA/cm2 in 1M MCPM and low voltage of 6 V in either 1M H3PO4 or 1M MCPM. All samples were treated with UV for various times up to 24 h. After UV irradiation, the contact angle decreased, the chemical species changed. The Ti 2p and O 1s peaks increased, while the C 1s peak decreased which might be due to removal of hydrocarbon. The functional groups of the films shown as the change of OH groups appeared at wave number 3700 cm-1 and 2900-3000 cm-1, however, the peak of H2O at 1630 cm-1disappeared. It is indicated that UV irradiation might change the stretching modes of OH groups coordinated to surface Ti4+ cation but UV did not affect to the changes in surface morphologies. The surface energies increased after UV irradiation resulting in improving of the hydrophilicity. The anodized films formed at low current density or low voltage after UV irradiation showed a low contact angle as well as the film formed at high current density or high voltage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hydrophilicity" title="hydrophilicity">hydrophilicity</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20current%20density" title=" low current density"> low current density</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20voltage" title=" low voltage"> low voltage</a>, <a href="https://publications.waset.org/abstracts/search?q=UV%20irradiation" title=" UV irradiation"> UV irradiation</a> </p> <a href="https://publications.waset.org/abstracts/22858/uv-enhanced-hydrophilicity-of-the-anodized-films-formed-at-low-current-density-and-low-voltage" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22858.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">499</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">15</span> Textile Firms Response to the Restriction of Nonylphenol and Its Ethoxylates: Looking from the Perspectives of Attitude and the Perceptions of Technical and Organizational Adaptabilities, Risks, Benefits, and Barriers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hien%20T.%20T.%20Ho">Hien T. T. Ho</a>, <a href="https://publications.waset.org/abstracts/search?q=Tsunemi%20Watanabe"> Tsunemi Watanabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The regulatory and market pressures on the restriction of nonylphenol and its ethoxylates in textile articles have confronted the textile manufacturers, particularly those in developing countries. This study aimed to examine the tentative behavior of the textile manufacturers in Vietnam from the perspectives of attitude and the perceptions of technical and organizational adaptabilities, risks, benefits, and barriers. Personal interviews were conducted with five technical specialists from four textile firms and one chemical supplier. The environmental regulatory and market situations regarding the chemical use in Vietnam were also described. The findings revealed two main opposing trends of chemical substitution depending on the market orientation of firms that governed the patterns of risk and benefit perception. The indirect influence of perceived adaptabilities on firm tentative behavior through perceived risks was elucidated, which initiated a conceptual model of firm’s behavior combining the organizational-based and the rational-based relationships. The intermediary role of non-governmental textile and garment industrial/ trade associations is highlighted to strengthen private firm’s informative capacity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=firm%20behavior" title="firm behavior">firm behavior</a>, <a href="https://publications.waset.org/abstracts/search?q=institutional%20analysis" title=" institutional analysis"> institutional analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=organizational%20adaptation" title=" organizational adaptation"> organizational adaptation</a>, <a href="https://publications.waset.org/abstracts/search?q=technical%20adaptation" title=" technical adaptation"> technical adaptation</a> </p> <a href="https://publications.waset.org/abstracts/92025/textile-firms-response-to-the-restriction-of-nonylphenol-and-its-ethoxylates-looking-from-the-perspectives-of-attitude-and-the-perceptions-of-technical-and-organizational-adaptabilities-risks-benefits-and-barriers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92025.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">164</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">14</span> Waste Management in a Hot Laboratory of Japan Atomic Energy Agency – 3: Volume Reduction and Stabilization of Solid Waste</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Masaumi%20Nakahara">Masaumi Nakahara</a>, <a href="https://publications.waset.org/abstracts/search?q=Sou%20Watanabe"> Sou Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiromichi%20Ogi"> Hiromichi Ogi</a>, <a href="https://publications.waset.org/abstracts/search?q=Atsuhiro%20Shibata"> Atsuhiro Shibata</a>, <a href="https://publications.waset.org/abstracts/search?q=Kazunori%20Nomura"> Kazunori Nomura</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the Japan Atomic Energy Agency, three types of experimental research, advanced reactor fuel reprocessing, radioactive waste disposal, and nuclear fuel cycle technology, have been carried out at the Chemical Processing Facility. The facility has generated high level radioactive liquid and solid wastes in hot cells. The high level radioactive solid waste is divided into three main categories, a flammable waste, a non-flammable waste, and a solid reagent waste. A plastic product is categorized into the flammable waste and molten with a heating mantle. The non-flammable waste is cut with a band saw machine for reducing the volume. Among the solid reagent waste, a used adsorbent after the experiments is heated, and an extractant is decomposed for its stabilization. All high level radioactive solid wastes in the hot cells are packed in a high level radioactive solid waste can. The high level radioactive solid waste can is transported to the 2nd High Active Solid Waste Storage in the Tokai Reprocessing Plant in the Japan Atomic Energy Agency. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=high%20level%20radioactive%20solid%20waste" title="high level radioactive solid waste">high level radioactive solid waste</a>, <a href="https://publications.waset.org/abstracts/search?q=advanced%20reactor%20fuel%20reprocessing" title=" advanced reactor fuel reprocessing"> advanced reactor fuel reprocessing</a>, <a href="https://publications.waset.org/abstracts/search?q=radioactive%20waste%20disposal" title=" radioactive waste disposal"> radioactive waste disposal</a>, <a href="https://publications.waset.org/abstracts/search?q=nuclear%20fuel%20cycle%20technology" title=" nuclear fuel cycle technology"> nuclear fuel cycle technology</a> </p> <a href="https://publications.waset.org/abstracts/104543/waste-management-in-a-hot-laboratory-of-japan-atomic-energy-agency-3-volume-reduction-and-stabilization-of-solid-waste" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104543.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">158</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">13</span> The Mirage of Progress? a Longitudinal Study of Japanese Students’ L2 Oral Grammar</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Robert%20Long">Robert Long</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroaki%20Watanabe"> Hiroaki Watanabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This longitudinal study examines the grammatical errors of Japanese university students’ dialogues with a native speaker over an academic year. The L2 interactions of 15 Japanese speakers were taken from the JUSFC2018 corpus (April/May 2018) and the JUSFC2019 corpus (January/February). The corpora were based on a self-introduction monologue and a three-question dialogue; however, this study examines the grammatical accuracy found in the dialogues. Research questions focused on a possible significant difference in grammatical accuracy from the first interview session in 2018 and the second one the following year, specifically regarding errors in clauses per 100 words, global errors and local errors, and with specific errors related to parts of speech. The investigation also focused on which forms showed the least improvement or had worsened? Descriptive statistics showed that error-free clauses/errors per 100 words decreased slightly while clauses with errors/100 words increased by one clause. Global errors showed a significant decline, while local errors increased from 97 to 158 errors. For errors related to parts of speech, a t-test confirmed there was a significant difference between the two speech corpora with more error frequency occurring in the 2019 corpus. This data highlights the difficulty in having students self-edit themselves. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=clause%20analysis" title="clause analysis">clause analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=global%20vs.%20local%20errors" title=" global vs. local errors"> global vs. local errors</a>, <a href="https://publications.waset.org/abstracts/search?q=grammatical%20accuracy" title=" grammatical accuracy"> grammatical accuracy</a>, <a href="https://publications.waset.org/abstracts/search?q=L2%20output" title=" L2 output"> L2 output</a>, <a href="https://publications.waset.org/abstracts/search?q=longitudinal%20study" title=" longitudinal study"> longitudinal study</a> </p> <a href="https://publications.waset.org/abstracts/122448/the-mirage-of-progress-a-longitudinal-study-of-japanese-students-l2-oral-grammar" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/122448.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">132</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">12</span> Total and Leachable Concentration of Trace Elements in Soil towards Human Health Risk, Related with Coal Mine in Jorong, South Kalimantan, Indonesia </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arie%20Pujiwati">Arie Pujiwati</a>, <a href="https://publications.waset.org/abstracts/search?q=Kengo%20Nakamura"> Kengo Nakamura</a>, <a href="https://publications.waset.org/abstracts/search?q=Noriaki%20Watanabe"> Noriaki Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Takeshi%20Komai"> Takeshi Komai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Coal mining is well known to cause considerable environmental impacts, including trace element contamination of soil. This study aimed to assess the trace element (As, Cd, Co, Cu, Ni, Pb, Sb, and Zn) contamination of soil in the vicinity of coal mining activities, using the case study of Asam-asam River basin, South Kalimantan, Indonesia, and to assess the human health risk, incorporating total and bioavailable (water-leachable and acid-leachable) concentrations. The results show the enrichment of As and Co in soil, surpassing the background soil value. Contamination was evaluated based on the index of geo-accumulation, <em>I<sub>geo</sub></em> and the pollution index, <em>PI</em>. <em>I<sub>geo</sub></em> values showed that the soil was generally uncontaminated (<em>I<sub>geo</sub></em> ≤ 0), except for elevated As and Co. Mean <em>PI</em> for Ni and Cu indicated slight contamination. Regarding the assessment of health risks, the Hazard Index, <em>HI</em> showed adverse risks (<em>HI</em> > 1) for Ni, Co, and As. Further, Ni and As were found to pose unacceptable carcinogenic risk (<em>risk</em> > 1.10<sup>-5</sup>). Farming, settlement, and plantation were found to present greater risk than coal mines. These results show that coal mining activity in the study area contaminates the soils by particular elements and may pose potential human health risk in its surrounding area. This study is important for setting appropriate countermeasure actions and improving basic coal mining management in Indonesia. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coal%20mine" title="coal mine">coal mine</a>, <a href="https://publications.waset.org/abstracts/search?q=risk" title=" risk"> risk</a>, <a href="https://publications.waset.org/abstracts/search?q=trace%20elements" title=" trace elements"> trace elements</a>, <a href="https://publications.waset.org/abstracts/search?q=soil" title=" soil"> soil</a> </p> <a href="https://publications.waset.org/abstracts/72852/total-and-leachable-concentration-of-trace-elements-in-soil-towards-human-health-risk-related-with-coal-mine-in-jorong-south-kalimantan-indonesia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72852.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">260</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">11</span> Pilot Trial of Evidence-Based Integrative Group Therapy to Improve Executive Functioning among Adults: Implications for Community Mental Health and Training Clinics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=B.%20Parchem">B. Parchem</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Watanabe"> M. Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Modrakovic"> D. Modrakovic</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Mathew"> L. Mathew</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Franklin"> A. Franklin</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Cao"> M. Cao</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20E.%20Broudy"> R. E. Broudy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objective: Executive functioning (EF) deficits underlie several mental health diagnoses including ADHD, anxiety, and depression. Community mental health clinics face extensive waitlists for services with many referrals involving EF deficits. A pilot trial of a four-week group therapy was developed using key components from Cognitive-Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), and mindfulness with an aim to improve EF skills and offer low-fee services. Method: Eight adults (M = 34.5) waiting for services at a community clinic were enrolled in a four-week group therapy at an in-house training clinic for doctoral trainees. Baseline EF, pre-/post-intervention ADHD and distress symptoms, group satisfaction, and curriculum helpfulness were assessed. Results: Downward trends in ADHD and distress symptoms pre/post-intervention were not significant. Favorable responses on group satisfaction and helpfulness suggest clinical utility. Conclusion: Preliminary pilot data from a brief group therapy to improve EF may be an efficacious, acceptable, and feasible intervention for adults waiting for services at community mental health and training clinics where there are high demands and limits to services and staffs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=executive%20functioning" title="executive functioning">executive functioning</a>, <a href="https://publications.waset.org/abstracts/search?q=cognitive-behavioral%20therapy" title=" cognitive-behavioral therapy"> cognitive-behavioral therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=dialectical%20behavior%20therapy" title=" dialectical behavior therapy"> dialectical behavior therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=mindfulness" title=" mindfulness"> mindfulness</a>, <a href="https://publications.waset.org/abstracts/search?q=adult%20group%20therapy" title=" adult group therapy"> adult group therapy</a> </p> <a href="https://publications.waset.org/abstracts/122227/pilot-trial-of-evidence-based-integrative-group-therapy-to-improve-executive-functioning-among-adults-implications-for-community-mental-health-and-training-clinics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/122227.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">163</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">10</span> Development of Nondestructive Imaging Analysis Method Using Muonic X-Ray with a Double-Sided Silicon Strip Detector</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=I-Huan%20Chiu">I-Huan Chiu</a>, <a href="https://publications.waset.org/abstracts/search?q=Kazuhiko%20Ninomiya"> Kazuhiko Ninomiya</a>, <a href="https://publications.waset.org/abstracts/search?q=Shin%E2%80%99ichiro%20Takeda"> Shin’ichiro Takeda</a>, <a href="https://publications.waset.org/abstracts/search?q=Meito%20Kajino"> Meito Kajino</a>, <a href="https://publications.waset.org/abstracts/search?q=Miho%20Katsuragawa"> Miho Katsuragawa</a>, <a href="https://publications.waset.org/abstracts/search?q=Shunsaku%20Nagasawa"> Shunsaku Nagasawa</a>, <a href="https://publications.waset.org/abstracts/search?q=Atsushi%20Shinohara"> Atsushi Shinohara</a>, <a href="https://publications.waset.org/abstracts/search?q=Tadayuki%20Takahashi"> Tadayuki Takahashi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ryota%20Tomaru"> Ryota Tomaru</a>, <a href="https://publications.waset.org/abstracts/search?q=Shin%20Watanabe"> Shin Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Goro%20Yabu"> Goro Yabu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years, a nondestructive elemental analysis method based on muonic X-ray measurements has been developed and applied for various samples. Muonic X-rays are emitted after the formation of a muonic atom, which occurs when a negatively charged muon is captured in a muon atomic orbit around the nucleus. Because muonic X-rays have higher energy than electronic X-rays due to the muon mass, they can be measured without being absorbed by a material. Thus, estimating the two-dimensional (2D) elemental distribution of a sample became possible using an X-ray imaging detector. In this work, we report a non-destructive imaging experiment using muonic X-rays at Japan Proton Accelerator Research Complex. The irradiated target consisted of polypropylene material, and a double-sided silicon strip detector, which was developed as an imaging detector for astronomical observation, was employed. A peak corresponding to muonic X-rays from the carbon atoms in the target was clearly observed in the energy spectrum at an energy of 14 keV, and 2D visualizations were successfully reconstructed to reveal the projection image from the target. This result demonstrates the potential of the non-destructive elemental imaging method that is based on muonic X-ray measurement. To obtain a higher position resolution for imaging a smaller target, a new detector system will be developed to improve the statistical analysis in further research. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DSSD" title="DSSD">DSSD</a>, <a href="https://publications.waset.org/abstracts/search?q=muon" title=" muon"> muon</a>, <a href="https://publications.waset.org/abstracts/search?q=muonic%20X-ray" title=" muonic X-ray"> muonic X-ray</a>, <a href="https://publications.waset.org/abstracts/search?q=imaging" title=" imaging"> imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=non-destructive%20analysis" title=" non-destructive analysis"> non-destructive analysis</a> </p> <a href="https://publications.waset.org/abstracts/137568/development-of-nondestructive-imaging-analysis-method-using-muonic-x-ray-with-a-double-sided-silicon-strip-detector" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/137568.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">205</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">9</span> Bi-Liquid Free Surface Flow Simulation of Liquid Atomization for Bi-Propellant Thrusters</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Junya%20Kouwa">Junya Kouwa</a>, <a href="https://publications.waset.org/abstracts/search?q=Shinsuke%20Matsuno"> Shinsuke Matsuno</a>, <a href="https://publications.waset.org/abstracts/search?q=Chihiro%20Inoue"> Chihiro Inoue</a>, <a href="https://publications.waset.org/abstracts/search?q=Takehiro%20Himeno"> Takehiro Himeno</a>, <a href="https://publications.waset.org/abstracts/search?q=Toshinori%20Watanabe"> Toshinori Watanabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Bi-propellant thrusters use impinging jet atomization to atomize liquid fuel and oxidizer. Atomized propellants are mixed and combusted due to auto-ignitions. Therefore, it is important for a prediction of thruster’s performance to simulate the primary atomization phenomenon; especially, the local mixture ratio can be used as indicator of thrust performance, so it is useful to evaluate it from numerical simulations. In this research, we propose a numerical method for considering bi-liquid and the mixture and install it to CIP-LSM which is a two-phase flow simulation solver with level-set and MARS method as an interfacial tracking method and can predict local mixture ratio distribution downstream from an impingement point. A new parameter, beta, which is defined as the volume fraction of one liquid in the mixed liquid within a cell is introduced and the solver calculates the advection of beta, inflow and outflow flux of beta to a cell. By validating this solver, we conducted a simple experiment and the same simulation by using the solver. From the result, the solver can predict the penetrating length of a liquid jet correctly and it is confirmed that the solver can simulate the mixing of liquids. Then we apply this solver to the numerical simulation of impinging jet atomization. From the result, the inclination angle of fan after the impingement in the bi-liquid condition reasonably agrees with the theoretical value. Also, it is seen that the mixture of liquids can be simulated in this result. Furthermore, simulation results clarify that the injecting condition affects the atomization process and local mixture ratio distribution downstream drastically. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bi-propellant%20thrusters" title="bi-propellant thrusters">bi-propellant thrusters</a>, <a href="https://publications.waset.org/abstracts/search?q=CIP-LSM" title=" CIP-LSM"> CIP-LSM</a>, <a href="https://publications.waset.org/abstracts/search?q=free-surface%20flow%20simulation" title=" free-surface flow simulation"> free-surface flow simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=impinging%20jet%20atomization" title=" impinging jet atomization"> impinging jet atomization</a> </p> <a href="https://publications.waset.org/abstracts/43135/bi-liquid-free-surface-flow-simulation-of-liquid-atomization-for-bi-propellant-thrusters" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43135.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">279</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">8</span> Effect of Nanostructure on Hydrogen Embrittlement Resistance of the Severely Deformed 316LN Austenitic Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Frank%20Jaksoni%20Mweta">Frank Jaksoni Mweta</a>, <a href="https://publications.waset.org/abstracts/search?q=Nozomu%20Adachi"> Nozomu Adachi</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoshikazu%20Todaka"> Yoshikazu Todaka</a>, <a href="https://publications.waset.org/abstracts/search?q=Hirokazu%20Sato"> Hirokazu Sato</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuta%20Sato"> Yuta Sato</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiromi%20Miura"> Hiromi Miura</a>, <a href="https://publications.waset.org/abstracts/search?q=Masakazu%20Kobayashi"> Masakazu Kobayashi</a>, <a href="https://publications.waset.org/abstracts/search?q=Chihiro%20Watanabe"> Chihiro Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoshiteru%20Aoyagi"> Yoshiteru Aoyagi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Advances in the consumption of hydrogen fuel increase demands of high strength steel pipes and storage tanks. However, high strength steels are highly sensitive to hydrogen embrittlement. Because the introduction of hydrogen into steel during the fabrication process or from the environment is unavoidable, it is essential to improve hydrogen embrittlement resistance of high strength steels through microstructural control. In the present study, the heterogeneous nanostructure with a tensile strength of about 1.8 GPa and the homogeneous nanostructure with a tensile strength of about 2.0 GPa of 316LN steels were generated after 92% heavy cold rolling and high-pressure torsion straining, respectively. The heterogeneous nanostructure is composed of twin domains, shear bands, and lamellar grains. The homogeneous nanostructure is composed of uniformly distributed ultrafine nanograins. The influence of heterogeneous and homogenous nanostructures on the hydrogen embrittlement resistance was investigated. The specimen for each nanostructure was electrochemically charged with hydrogen for 3, 6, 12, and 24 hours, respectively. Under the same hydrogen charging time, both nanostructures show almost the same concentration of the diffusible hydrogen based on the thermal desorption analysis. The tensile properties of the homogenous nanostructure were severely affected by the diffusible hydrogen. However, the diffusible hydrogen shows less impact on the tensile properties of the heterogeneous nanostructure. The difference in embrittlement behavior between the heterogeneous and homogeneous nanostructures was elucidated based on the mechanism of the cracks' growth observed in the tensile fractography. The hydrogen embrittlement was suppressed in the heterogeneous nanostructure because the twin domain became an obstacle for crack growth. The homogeneous nanostructure was not consisting an obstacle such as a twin domain; thus, the crack growth resistance was low in this nanostructure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=diffusible%20hydrogen" title="diffusible hydrogen">diffusible hydrogen</a>, <a href="https://publications.waset.org/abstracts/search?q=heterogeneous%20nanostructure" title=" heterogeneous nanostructure"> heterogeneous nanostructure</a>, <a href="https://publications.waset.org/abstracts/search?q=homogeneous%20nanostructure" title=" homogeneous nanostructure"> homogeneous nanostructure</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20embrittlement" title=" hydrogen embrittlement"> hydrogen embrittlement</a> </p> <a href="https://publications.waset.org/abstracts/131052/effect-of-nanostructure-on-hydrogen-embrittlement-resistance-of-the-severely-deformed-316ln-austenitic-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131052.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">123</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">7</span> Designing Mobile Application to Motivate Young People to Visit Cultural Heritage Sites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yuko%20Hiramatsu">Yuko Hiramatsu</a>, <a href="https://publications.waset.org/abstracts/search?q=Fumihiro%20Sato"> Fumihiro Sato</a>, <a href="https://publications.waset.org/abstracts/search?q=Atsushi%20Ito"> Atsushi Ito</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroyuki%20Hatano"> Hiroyuki Hatano</a>, <a href="https://publications.waset.org/abstracts/search?q=Mie%20Sato"> Mie Sato</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu%20Watanabe"> Yu Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Akira%20Sasaki"> Akira Sasaki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a mobile phone application developed for sightseeing in Nikko, one of the cultural world heritages in Japan, using the BLE (Bluetooth Low Energy) beacon. Based on our pre-research, we decided to design our application for young people who walk around the area actively, but know little about the tradition and culture of Nikko. One solution is to construct many information boards to explain; however, it is difficult to construct new guide plates in cultural world heritage sites. The smartphone is a good solution to send such information to such visitors. This application was designed using a combination of the smartphone and beacons, set in the area, so that when a tourist passes near a beacon, the application displays information about the area including a map, historical or cultural information about the temples and shrines, and local shops nearby as well as a bus timetable. It is useful for foreigners, too. In addition, we developed quizzes relating to the culture and tradition of Nikko to provide information based on the Zeigarnik effect, a psychological effect. According to the results of our trials, tourists positively evaluated the basic information and young people who used the quiz function were able to learn the historical and cultural points. This application helped young visitors at Nikko to understand the cultural elements of the site. In addition, this application has a function to send notifications. This function is designed to provide information about the local community such as shops, local transportation companies and information office. The application hopes to also encourage people living in the area, and such cooperation from the local people will make this application vivid and inspire young visitors to feel that the cultural heritage site is still alive today. This is a gateway for young people to learn about a traditional place and understand the gravity of preserving such areas. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=BLE%20beacon" title="BLE beacon">BLE beacon</a>, <a href="https://publications.waset.org/abstracts/search?q=smartphone%20application" title=" smartphone application"> smartphone application</a>, <a href="https://publications.waset.org/abstracts/search?q=Zeigarnik%20effect" title=" Zeigarnik effect"> Zeigarnik effect</a>, <a href="https://publications.waset.org/abstracts/search?q=world%20heritage%20site" title=" world heritage site"> world heritage site</a>, <a href="https://publications.waset.org/abstracts/search?q=school%20trip" title=" school trip"> school trip</a> </p> <a href="https://publications.waset.org/abstracts/55685/designing-mobile-application-to-motivate-young-people-to-visit-cultural-heritage-sites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55685.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">324</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6</span> Clinical Applications of Amide Proton Transfer Magnetic Resonance Imaging: Detection of Brain Tumor Proliferative Activity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fumihiro%20Ima">Fumihiro Ima</a>, <a href="https://publications.waset.org/abstracts/search?q=Shinichi%20Watanabe"> Shinichi Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Shingo%20Maeda"> Shingo Maeda</a>, <a href="https://publications.waset.org/abstracts/search?q=Haruna%20Imai"> Haruna Imai</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroki%20Niimi"> Hiroki Niimi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is important to know growth rate of brain tumors before surgery because it influences treatment planning including not only surgical resection strategy but also adjuvant therapy after surgery. Amide proton transfer (APT) imaging is an emerging molecular magnetic resonance imaging (MRI) technique based on chemical exchange saturation transfer without administration of contrast medium. The underlying assumption in APT imaging of tumors is that there is a close relationship between the proliferative activity of the tumor and mobile protein synthesis. We aimed to evaluate the diagnostic performance of APT imaging of pre-and post-treatment brain tumors. Ten patients with brain tumor underwent conventional and APT-weighted sequences on a 3.0 Tesla MRI before clinical intervention. The maximum and the minimum APT-weighted signals (APTWmax and APTWmin) in each solid tumor region were obtained and compared before and after clinical intervention. All surgical specimens were examined for histopathological diagnosis. Eight of ten patients underwent adjuvant therapy after surgery. Histopathological diagnosis was glioma in 7 patients (WHO grade 2 in 2 patients, WHO grade 3 in 3 patients and WHO grade 4 in 2 patients), meningioma WHO grade1 in 2 patients and primary lymphoma of the brain in 1 patient. High-grade gliomas showed significantly higher APTW-signals than that in low-grade gliomas. APTWmax in one huge parasagittal meningioma infiltrating into the skull bone was higher than that in glioma WHO grade 4. On the other hand, APTWmax in another convexity meningioma was the same as that in glioma WHO grade 3. Diagnosis of primary lymphoma of the brain was possible with APT imaging before pathological confirmation. APTW-signals in residual tumors decreased dramatically within one year after adjuvant therapy in all patients. APT imaging demonstrated excellent diagnostic performance for the planning of surgery and adjuvant therapy of brain tumors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amides" title="amides">amides</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20resonance%20imaging" title=" magnetic resonance imaging"> magnetic resonance imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=brain%20tumors" title=" brain tumors"> brain tumors</a>, <a href="https://publications.waset.org/abstracts/search?q=cell%20proliferation" title=" cell proliferation"> cell proliferation</a> </p> <a href="https://publications.waset.org/abstracts/157244/clinical-applications-of-amide-proton-transfer-magnetic-resonance-imaging-detection-of-brain-tumor-proliferative-activity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157244.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">139</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">5</span> Clinical Applications of Amide Proton Transfer Magnetic Resonance Imaging: Detection of Brain Tumor Proliferative Activity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fumihiro%20Imai">Fumihiro Imai</a>, <a href="https://publications.waset.org/abstracts/search?q=Shinichi%20Watanabe"> Shinichi Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Shingo%20Maeda"> Shingo Maeda</a>, <a href="https://publications.waset.org/abstracts/search?q=Haruna%20Imai"> Haruna Imai</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroki%20Niimi"> Hiroki Niimi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is important to know the growth rate of brain tumors before surgery because it influences treatment planning, including not only surgical resection strategy but also adjuvant therapy after surgery. Amide proton transfer (APT) imaging is an emerging molecular magnetic resonance imaging (MRI) technique based on chemical exchange saturation transfer without the administration of a contrast medium. The underlying assumption in APT imaging of tumors is that there is a close relationship between the proliferative activity of the tumor and mobile protein synthesis. We aimed to evaluate the diagnostic performance of APT imaging of pre-and post-treatment brain tumors. Ten patients with brain tumor underwent conventional and APT-weighted sequences on a 3.0 Tesla MRI before clinical intervention. The maximum and the minimum APT-weighted signals (APTWmax and APTWmin) in each solid tumor region were obtained and compared before and after a clinical intervention. All surgical specimens were examined for histopathological diagnosis. Eight of ten patients underwent adjuvant therapy after surgery. Histopathological diagnosis was glioma in 7 patients (WHO grade 2 in 2 patients, WHO grade 3 in 3 patients, and WHO grade 4 in 2 patients), meningioma WHO grade 1 in 2 patients, and primary lymphoma of the brain in 1 patient. High-grade gliomas showed significantly higher APTW signals than that low-grade gliomas. APTWmax in one huge parasagittal meningioma infiltrating into the skull bone was higher than that in glioma WHO grade 4. On the other hand, APTWmax in another convexity meningioma was the same as that in glioma WHO grade 3. Diagnosis of primary lymphoma of the brain was possible with APT imaging before pathological confirmation. APTW signals in residual tumors decreased dramatically within one year after adjuvant therapy in all patients. APT imaging demonstrated excellent diagnostic performance for the planning of surgery and adjuvant therapy of brain tumors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amides" title="amides">amides</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20resonance%20imaging" title=" magnetic resonance imaging"> magnetic resonance imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=brain%20tumors" title=" brain tumors"> brain tumors</a>, <a href="https://publications.waset.org/abstracts/search?q=cell%20proliferation" title=" cell proliferation"> cell proliferation</a> </p> <a href="https://publications.waset.org/abstracts/164452/clinical-applications-of-amide-proton-transfer-magnetic-resonance-imaging-detection-of-brain-tumor-proliferative-activity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164452.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">86</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">4</span> Assessing the Effect of Urban Growth on Land Surface Temperature: A Case Study of Conakry Guinea</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arafan%20Traore">Arafan Traore</a>, <a href="https://publications.waset.org/abstracts/search?q=Teiji%20Watanabe"> Teiji Watanabe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Conakry, the capital city of the Republic of Guinea, has experienced a rapid urban expansion and population increased in the last two decades, which has resulted in remarkable local weather and climate change, raise energy demand and pollution and treating social, economic and environmental development. In this study, the spatiotemporal variation of the land surface temperature (LST) is retrieved to characterize the effect of urban growth on the thermal environment and quantify its relationship with biophysical indices, a normalized difference vegetation index (NDVI) and a normalized difference built up Index (NDBI). Landsat data TM and OLI/TIRS acquired respectively in 1986, 2000 and 2016 were used for LST retrieval and Land use/cover change analysis. A quantitative analysis based on the integration of a remote sensing and a geography information system (GIS) has revealed an important increased in the LST pattern in the average from 25.21°C in 1986 to 27.06°C in 2000 and 29.34°C in 2016, which was quite eminent with an average gain in surface temperature of 4.13°C over 30 years study period. Additionally, an analysis using a Pearson correlation (r) between (LST) and the biophysical indices, normalized difference vegetation index (NDVI) and a normalized difference built-up Index (NDBI) has revealed a negative relationship between LST and NDVI and a strong positive relationship between LST and NDBI. Which implies that an increase in the NDVI value can reduce the LST intensity; conversely increase in NDBI value may strengthen LST intensity in the study area. Although Landsat data were found efficient in assessing the thermal environment in Conakry, however, the method needs to be refined with in situ measurements of LST in the future studies. The results of this study may assist urban planners, scientists and policies makers concerned about climate variability to make decisions that will enhance sustainable environmental practices in Conakry. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Conakry" title="Conakry">Conakry</a>, <a href="https://publications.waset.org/abstracts/search?q=land%20surface%20temperature" title=" land surface temperature"> land surface temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20heat%20island" title=" urban heat island"> urban heat island</a>, <a href="https://publications.waset.org/abstracts/search?q=geography%20information%20system" title=" geography information system"> geography information system</a>, <a href="https://publications.waset.org/abstracts/search?q=remote%20sensing" title=" remote sensing"> remote sensing</a>, <a href="https://publications.waset.org/abstracts/search?q=land%20use%2Fcover%20change" title=" land use/cover change"> land use/cover change</a> </p> <a href="https://publications.waset.org/abstracts/72248/assessing-the-effect-of-urban-growth-on-land-surface-temperature-a-case-study-of-conakry-guinea" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72248.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">246</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">3</span> Waste Management in a Hot Laboratory of Japan Atomic Energy Agency – 1: Overview and Activities in Chemical Processing Facility</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kazunori%20Nomura">Kazunori Nomura</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiromichi%20Ogi"> Hiromichi Ogi</a>, <a href="https://publications.waset.org/abstracts/search?q=Masaumi%20Nakahara"> Masaumi Nakahara</a>, <a href="https://publications.waset.org/abstracts/search?q=Sou%20Watanabe"> Sou Watanabe</a>, <a href="https://publications.waset.org/abstracts/search?q=Atsuhiro%20Shibata"> Atsuhiro Shibata </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Chemical Processing Facility of Japan Atomic Energy Agency is a basic research field for advanced back-end technology developments with using actual high-level radioactive materials such as irradiated fuels from the fast reactor, high-level liquid waste from reprocessing plant. In the nature of a research facility, various kinds of chemical reagents have been offered for fundamental tests. Most of them were treated properly and stored in the liquid waste vessel equipped in the facility, but some were not treated and remained at the experimental space as a kind of legacy waste. It is required to treat the waste in safety. On the other hand, we formulated the Medium- and Long-Term Management Plan of Japan Atomic Energy Agency Facilities. This comprehensive plan considers Chemical Processing Facility as one of the facilities to be decommissioned. Even if the plan is executed, treatment of the “legacy” waste beforehand must be a necessary step for decommissioning operation. Under this circumstance, we launched a collaborative research project called the STRAD project, which stands for Systematic Treatment of Radioactive liquid waste for Decommissioning, in order to develop the treatment processes for wastes of the nuclear research facility. In this project, decomposition methods of chemicals causing a troublesome phenomenon such as corrosion and explosion have been developed and there is a prospect of their decomposition in the facility by simple method. And solidification of aqueous or organic liquid wastes after the decomposition has been studied by adding cement or coagulants. Furthermore, we treated experimental tools of various materials with making an effort to stabilize and to compact them before the package into the waste container. It is expected to decrease the number of transportation of the solid waste and widen the operation space. Some achievements of these studies will be shown in this paper. The project is expected to contribute beneficial waste management outcome that can be shared world widely. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chemical%20processing%20facility" title="chemical processing facility">chemical processing facility</a>, <a href="https://publications.waset.org/abstracts/search?q=medium-%20and%20long-term%20management%20plan%20of%20JAEA%20facilities" title=" medium- and long-term management plan of JAEA facilities"> medium- and long-term management plan of JAEA facilities</a>, <a href="https://publications.waset.org/abstracts/search?q=STRAD%20project" title=" STRAD project"> STRAD project</a>, <a href="https://publications.waset.org/abstracts/search?q=treatment%20of%20radioactive%20waste" title=" treatment of radioactive waste"> treatment of radioactive waste</a> </p> <a href="https://publications.waset.org/abstracts/104402/waste-management-in-a-hot-laboratory-of-japan-atomic-energy-agency-1-overview-and-activities-in-chemical-processing-facility" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104402.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">142</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=Kajiro%20Watanabe&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Kajiro%20Watanabe&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 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