Search Results 1-20 of 132

  • Back Trajectory Analysis of Pathline for Strong Wind within Pedestrian Space based on LES Database  [in Japanese]

    Okaze Tsubasa , Kikumoto Hideki , Ikegaya Naoki

    <p>近年、計算機能力の向上によって、LESは、風洞実験に替わるアセスメントツールとして活用されることが期待されている。従来のRANSモデルに基づく風環境影響評価では、平均場風速にガストファクターを乗じ、最大瞬間風速を推定していたが、LESにより、直接、その予測が可能である。本研究では、単体角柱周辺流れのLESを実施し、建物風上の風速変動と建物周辺の歩行者空間の相関を分析するとともに、 …

    Summaries to Technical Papers of Annual Meeting, Japan Association for Wind Engineering 2019(0), 175-176, 2019

    J-STAGE 

  • Study of Silencer for Bulkhead Aperture:(Transmission Loss of Silencer Using Thin Plate Having Back Air Space)  [in Japanese]

    CHINDA Mizuki , SAKAMOTO Shuichi , ABE Shota

    The Proceedings of Conference of Hokuriku-Shinetsu Branch 2018.55(0), H021, 2018

    J-STAGE 

  • Study on acoustic absorption effect by the vibration of thin plate having back air space:(The contribution of clearance and vibrating plate to sound absorbing characteristics)  [in Japanese]

    FUJISAWA Kouhei , SAKAMOTO Shuichi , WATANABE Shunsuke , KOMINAMI Ryota

    The Proceedings of Conference of Hokuriku-Shinetsu Branch 2018.55(0), H022, 2018

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  • Killian-Jamieson Diverticulum Which Was Determined as a Thyroid Tumor  [in Japanese]

    Sasaki Masaru , Nakaba Hiroyuki , Tamagawa Hiroshi , Kikkawa Hiroyuki , Taniguchi Eiji , Oguchi Yoshiro , Arima Ryoichi

    … Killian-Jamieson憩室(以下,K-J憩室と略記)と診断し,有症状であったため憩室切除術を施行した.術中経鼻胃管より送気すると憩室はより大きく膨隆し,容易に把握することが可能となった.憩室はKillian-Jamieson spaceから発生していることが確認でき,基部にて憩室を切除した.消化管憩室の中でもまれではあるが,嚥下障害などの症状を伴う甲状腺腫瘍を疑われた際には,K-J憩室の存在も念頭に置く必要がある.</p> …

    The Japanese Journal of Gastroenterological Surgery 51(7), 471-478, 2018

    J-STAGE  Ichushi Web 

  • Development of an Analytical Method for the Detection of NO<sub>z</sub> and Its Application to the Atmospheric Analysis at a Mountain Site  [in Japanese]

    WADA Ryuichi , MATSUMOTO Jun , YONEMURA Seiichiro , MATSUMI Yutaka , KAJINO Mizuo , HATAKEYAMA Shiro , SADANAGA Yasuhiro , KATO Shungo , KATSUMI Naoya , OKOCHI Hiroshi , IWAMOTO Yoko , MIURA Kazuhiko , KOBAYASHI Hiroshi , KAMOGAWA Masashi

    <p>レーザー分光計測装置と化学発光分析装置を組み合わせ,NO<sub>x</sub>の酸化物質であるNO<sub>z</sub>を計測する分析手法を開発した.本研究では,化学干渉がなく,NO<sub>2</sub>固有の吸収波長を用いることで濃度を正確に計測可能なレーザー分光法を用いてNO<sub>2 …

    BUNSEKI KAGAKU 67(6), 333-340, 2018

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  • THE TOBACCO CURING BARN FOR YELLOW SPECIES WITH A CENTRAL FOCUS ON THE SETO INLAND SEA AREA  [in Japanese]

    KAMATOKO Miyako , MIYAMOTO Mitsuhiro

    … The first curing barn was a building with a space of 3 Ken × … Air warmed by the Kamado is circulated inside the iron pipe that was installed over the dirt floor of the barn to dry the leaves with its radiant heat. …

    Journal of Architecture and Planning (Transactions of AIJ) (741), 2815-2825, 2017-11

    J-STAGE  AIJ 

  • Study on sound absorption effect by vibration of the thin plate with back air space:(Characteristics variation by various boundary condition)  [in Japanese]

    WATANABE Taku , SAKAMOTO Shuichi , WATANABE Shunsuke

    The Proceedings of Conference of Hokuriku-Shinetsu Branch 2017.54(0), L022, 2017

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  • A FUNDAMENTAL INVESTIGATION ON ACOUSTIC PROPERTIES OF POROUS MORTAR BOARDS  [in Japanese]

    YAMAGUCHI Makoto , MORISHIMA Shintaro , TOMIKU Reiji , OKAMOTO Noriko

    <p>ポーラスモルタル(POM)の音響材料としての用途開発に資するため、POM板の吸音特性に及ぼすPOM層の総厚および背後空気層の有無の影響について検討するとともに、乾式二重床を模擬した木造床の中空部にPOM板を敷設し、それら木造床の床衝撃音遮断性能について実験的検討を行った。その結果として、①POM板の吸音特性は、POM層の総厚を増すことなく背後空気層により制御可能であること、②軽量 …

    Cement Science and Concrete Technology 71(1), 704-710, 2017

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  • Back Pressure Effect on Three-Way Catalyst Light-Off

    H. Baron Jan , K. Cheng Wai

    … <p>The effect of back pressure on the light-off of a modern spark ignition engine 3-way catalyst has been assessed by measuring the hydrocarbon (HC) conversion efficiency in a hot flow bench and in the cold-idle period in an engine. … In the flow bench experiment, small amount of propane/air mixture is used as a surrogate for the hydrocarbon mixture. … The efficiency is independent of pressure, space velocity, and the equivalence ratio of the hydrocarbon mixture for λ 1. …

    The Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines 2017.9(0), B301, 2017

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  • Development of an Air Duct Damper to Prevent Backflow Odor from the Ventilation Shaft in Buildings

    Hwang Taeyon , Go Beomseok

    … Nowadays, backflow odor, along with floor noise, has been recognized as an environmental right dispute element between the units within a multi-unit dwelling in Korea because it causes not only foul odors flowing back into the unit vent pipe to flow indoors and cause a problem of degraded air quality but also annoyance by foul odors and steam in balconies and bathrooms. … Therefore, this study relates to the performance improvement of bathroom air duct facilities in multi-unit dwellings. …

    Journal of Asian Architecture and Building Engineering 16(3), 641-646, 2017

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  • Effect of Air Jets on Acoustic Absorption Characteristics of Perforated Plate with Cavity  [in Japanese]

    OSATO Yutaro , HAMAKAWA Hiromitsu , MIYAZAKI Masanori , NISHIDA Eiichi , KURIHARA Eru , HAYASHI Hidechito

    … <p>The present paper focuses on the effect of air jets on acoustic absorption characteristics of perforated plate with cavity. … We discussed the influences of flow rate, background back space, plate thickness, opening ratio of small holes, and hole diameter of perforated plate on acoustic absorption characteristics theoretically. …

    The Proceedings of the Symposium on Environmental Engineering 2016.26(0), 119, 2016

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  • Numerical Study of Ignition Limit on Electric Wire with Excess Current Supply under Microgravity  [in Japanese]

    SHIMIZU Kohei , HASHIMOTO Nozomu , KIKUCHI Masao , FUJITA Osamu

    … After all of the insulation was thermally decomposed and gasified, air which was removed near the wire surface by fuel gas diffused back towards wire surface. … On the other hand, such inflow of air removes fuel gas from near the surface. … Thus it was mentioned a possibility that amount of insulation, which controlled air diffusing, could decide limiting current values. …

    The Proceedings of Mechanical Engineering Congress, Japan 2016(0), G0600504, 2016

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  • A RESEARCH ON CREATING A GOOD ENVIRONMENT OF ONE-YEAR-OLD CHILDREN'S ROOM IN JAPANESE CHILD DAYCARE CENTRES:A special focus on indoor temperature and air environment of two child daycare centres in KANTO area  [in Japanese]

    FUJII Risa , SADAYUKI Mariko

    … The purpose of this research is to examine and analyze the current situations of indoor environment of children's daycare centres such as temperature, air environment and space compositions of one-year-old children's rooms.<br> In order to know the environment, we conducted a survey by measurement observation and questionnaire in two daycare centres in major cities in Japan. …

    Journal of Architecture and Planning (Transactions of AIJ) 81(729), 2383-2391, 2016

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  • 537 Damped Acoustic Analysis for Auto motive Cabin with Various Porous Media  [in Japanese]

    IKEZAKI Syuuhei , KUROSAWA Yoshio , YAMAGUCHI Takao

    … We have created a test piece that simulates a car around the upper back. … Urethane foam and felt to model the internal air in the complex density and complex bulk modulus, we sought the mode loss coefficient from decay contribution of each sound-absorbing element for mode attenuation of space. …

    Dynamics and Design Conference : D & D 2015, "537-1"-"537-8", 2015-08-25

  • Ozone Deodorization:-Fight Against Odour, Wastewater-  [in Japanese]

    Nakajima Mitsuharu

    オゾンは強力な殺菌,脱臭作用をもっており「オゾンを有効に安全に安心して使用して頂く為の方法」の最も経済的で有効な活用例を紹介する。<br>オゾン脱臭方法には,乾式オゾン法と湿式オゾン法がある。<br>オゾンによる脱臭法の利点としては,<br>1)オゾンはオゾン発生装置があれば後は空気と電気から必要な量を必要な時に供給出来る。<br>2)使用後のオゾン …

    JAPAN TAPPI JOURNAL 69(12), 1304-1308, 2015

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  • Study of sound-absorbing materials using layered narrow clearances between two surfaces (Theoretical analysis and experiments of <i>Sensu</i> (folding fan) shaped test samples)

    SAKAMOTO Shuichi , HIGUCHI Katsuya , KOSEKI Shota

    … In cases with an appropriate back air space, sound absorption peak frequencies decreased relative to cases without a back air space, and sound absorption characteristics were superior across a wide frequency range. …

    Journal of Advanced Mechanical Design, Systems, and Manufacturing 9(5), JAMDSM0062-JAMDSM0062, 2015

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  • Direct simulation of aerodynamic sound about a diagonally arranged two-dimensional fin array by the finite-difference lattice Boltzmann method  [in Japanese]

    KUNISHIMA Yuichi , TSUTAHARA Michihisa , HASHIZUME Yoshimitsu , KUMANO Takahiro , MAEDA Yuki

    … We set 2-dimensional computational model which neglected spanwise effect of the fins, and performed direct simulation of aerodynamic sound for two types of fins whose difference is the width of the back section with the finite-difference lattice Boltzmann method. … When the resonance occurred, the frequency of Kármán vortex shedding from the trailing edges of the fins agreed with the natural frequency of air columns which correspond the space between neighbouring fins. …

    Transactions of the JSME (in Japanese) 81(825), 14-00467-14-00467, 2015

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  • Study on Energy Conservation by the Space at the back of Compressor Unit of Air Conditioner  [in Japanese]

    大類 正洋 , 北原 博幸

    <p>エアコン室外機の背面間隔が狭いと,通風抵抗の増加により熱交換器の通風量が低下し,凝縮温度の上昇を招き,消費電力の増加・高圧カットによるエアコン停止・運転能力の低下が懸念される。背面間隔を広くとることができれば室外機の通風抵抗を減じ,エアコンの消費電力を抑えることができ,ピークカットにも貢献できる。本稿では,ルームエアコンの冷暖房運転時に背面間隔を変えることによる省エネ性を実験およ …

    Techinical Papers of Annual Meeting the Society of Heating,Air-conditioning and Sanitary Engineers of Japan 2014.3(0), 241-244, 2014

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  • A Case of Emphysema which Spread through the Mediastinum from an Anorectal Injury Caused by a Personal Watercraft Accident  [in Japanese]

    Shinozaki Yukari , Sumi Kenji , Yamaji Kotarou , Tanaka Toshiya , Sato Seiji

    … 胸腹部CTで肛門から直腸周囲と縦隔にまで広がるairを認め,落水した際のウォータージェット推進装置から噴き出した水による直腸裂傷,後腹膜気腫,縦隔気腫と診断した。 …

    Nihon Fukubu Kyukyu Igakkai Zasshi (Journal of Abdominal Emergency Medicine) 34(6), 1159-1162, 2014

    J-STAGE  Ichushi Web 

  • 5-1-4-436 Development of Power Assist Suit : Improvement of Waist Unit and Leg Unit  [in Japanese]

    YAMAMOTO Keijirou , ISHII Mineo , YOKOUCHI Ryota , HYODO Kazuhito , TAKAHASHI Katsumi , MATSUO Takashi

    … A stand alone type wearable power assist suit we developed gives nurses the extra muscles they need to lift their patients and avoid back injuries. … The suit consists of shoulders, arms, back, waist, hip and legs units to be fitted on the nurse's body. … The arms, waist and legs have newly developed rotary actuators consisting of air bags driven directly by micro air pumps supplied by portable batteries. …

    Dynamics and Design Conference : D & D 2013, "436-1"-"436-8", 2013-08-25

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