Search Results 1-20 of 4618

  • Electron loss mechanisms in a miniature microwave discharge water neutralizer

    Yosuke Sato , Hiroyuki Koizumi , Masakatsu Nakano , Yoshinori Takao

    … However, the efficiency of 20% is still low (e.g., less than half of the xenon one) because many electrons are lost to the magnet surface. … This result is attributed to the large number of electron collisions in the water neutralizer owing to the high neutral gas pressure. …

    Physics of plasmas 27(6), 063505-1-063505-8, 2020-06

    IR 

  • Utilization Analysis of Bioethanol (Low Grade) and Oxygenated Additive to COV and Gas Emissions on SI Engine

    Abikusna Setia , Sugiarto Bambang , Yamin Iqbal

    … The addition of bioethanol will certainly change the fuel properties, the fuel will be more difficult to self-ignite so the pressure generated in the combustion chamber will be more consistent. … The coefficient of variation (COV) represents the ratio of the standard deviation to the mean of a set of data, in this study in-cylinder pressure data (IMEP) is used. …

    Evergreen 7(1), 43-50, 2020-03

    IR  DOI 

  • Direct production of hydrogen-rich gas and/or pure-hydrogen with high-pressure from alcohol/water/metal-powder mixture at low processing temperature

    Deguchi Seiichi , Kobayashi Noriyuki , Isu Norifumi , Ito Mitsunori

    ファイル公開:2022-01-24

    International Journal of Hydrogen Energy 45(4), 2513-2526, 2020-01-24

    IR 

  • CO diffusive emission in the co-seismic rupture zone of the Wenchuan <i>M<sub>S</sub></i> 8.0 earthquake

    Sun Yutao , Zhou Xiaocheng , Du Jianguo , Guo Zhengfu

    … Surface rupture zones are one of the main regions of gas degassing. … d<sup>−1</sup>, which indicated gas was still degassing after the Wenchuan <i>M<sub>S</sub></i> … Abiogenic CO in the WSRZ might origin from the low crust flow and chemical reactions of the C-H-O fluids in the active fault zone. …

    GEOCHEMICAL JOURNAL 54(3), 91-104, 2020

    J-STAGE 

  • Study on the flow and heat transport characteristics of concentric-tube two-phase thermosyphon

    HONGO Takuya , MIYACHI Yuki , KIMURA Rei , HORIE Hideki , TAKAMATSU Tomonao , IWAKI Chikako

    … Moreover, since its external form is a single tube by inserting a pipe through which the liquid flows into a pipe through which the gas flows, the reactor core can be made smaller. … We conducted an experimental study on the flow inside a thermosyphon made of transparent material, and evaluated the maximum heat transfer rate using a low boiling point refrigerant, HFE-7100. …

    Mechanical Engineering Journal 7(3), 19-00578-19-00578, 2020

    J-STAGE 

  • Influences of Gas Fuel Injection Pressure on Combustion Stability of Low Combustion-Driven Oscillation Center-Firing Gas Burner  [in Japanese]

    TSUMURA Toshikazu , UEDA Toshihisa , KAWAGUCHI Osamu

    … <p>Generally in industrial gas fired boilers, maximum supply pressure of gas fuel at the nozzle is set from 70 to 130 kPa(G), because undesirable behaviors such as combustion noise, oscillation or flame instability occur in boilers under operation at high supply pressure conditions. … However, if the pressure of gas fuel can be increased, many merits are acquired from a view point of industrial design. …

    Journal of the Combustion Society of Japan 62(200), 161-168, 2020

    J-STAGE 

  • EVALUATIONS OF THERMOSYPHON SOLAR THERMAL WATER HEATERS PART 1: LONG TERM FIELD TEST OF THREE OPEN CIRCUIT SOLAR WATER HEATERS  [in Japanese]

    YOSHINAGA Mika , SHIRODE Kosaku , KUWASAWA Yasuo

    … In the secondary distribution systems, there are S1-system in which solar hot water is sent to a bathtub and a shower only, S2-system in which users can select hot water from SWH or an auxiliary gas boiler by switching a valve depending on the solar water temperature, and S3-system in which the auxiliary gas boiler works automatically by the device named the connection unit. … Second, there is no additional electric consumption from controllers and a pressure device. …

    Journal of Environmental Engineering (Transactions of AIJ) 85(771), 341-350, 2020

    J-STAGE 

  • A Parametric Study of a Multi-Slot Air Knife for Coating Thickness Reduction

    Yahyaee soufiani Ali , Mcdermid Joseph Robert , Hrymak Andrew Nick , Goodwin Frank Erik

    … <p>This paper presents an investigation of the gas jet wiping process, which is used in the continuous galvanizing line to control the Zn-alloy coating thickness on steel substrates. … In this study, a novel configuration of a multi-slot air knife was used as the wiping actuator in a parametric study of the gas jet wiping process. …

    ISIJ International 60(5), 1040-1051, 2020

    J-STAGE 

  • Forefront of studies on mud volcanoes: Advances in studies on inland mud volcanoes in the last 8 years  [in Japanese]

    Tanaka Kazuhiro , Asano Keiji , Watanabe Masatoshi , Komatsubara Dai , Suzuki Koichi

    <p>日本および台湾の陸上泥火山は冠線および断層沿いに分布している.冠線沿いに分布する泥火山では,不透水性キャップロックの下位に形成される高塩濃度地下水により飽和したマッドチャンバーにおいて,脱ガスが起こり,発生した高いガス圧により流体が上方へ水圧破砕を繰り返しながら移動し,地表において弱線部より破壊的噴出を行う.その際,地表部に様々な規模の陥没地形を生成する.地表部にキャップロックが …

    The Journal of the Geological Society of Japan 126(1), 39-51, 2020

    J-STAGE 

  • Special Issue on MEMS for Robotics and Mechatronics

    Esashi Masayoshi , Tanaka Shuji , Aoyagi Seiji , Mineta Takashi , Suzumori Koichi , Dohi Tetsuji , Miki Norihisa

    … MEMS are also used in robotics and mechatronics since they can provide compact, low-cost functional components that play crucial roles in their respective systems. … We would like to elaborate on the history of MEMS technology, whose initial development started around 1970.</p><p>In 1960s, Dr. Isemi Igarashi of Toyota Central R&D Labs., Inc. in Japan developed a semiconductor pressure sensor of piezo-resistance type. …

    Journal of Robotics and Mechatronics 32(2), 279-280, 2020

    J-STAGE 

  • A case of gus gangrene  [in Japanese]

    Inoue Akira , Shiojima Hiroki , Kanao Kunio , Saito Yutaka , Takuma Kiyotsugu

    <p>【背景】ガス壊疽はガス産生菌による進行性の軟部組織感染症である。治療は早期かつ徹底的な外科手術が提唱されている。広範囲のガス壊疽では抗菌薬による治療に反応しないことが多く, 下肢切断が必要となることもある。【症例】50歳代男性。数カ月前より左下腿の腫脹を認め歩けなくなり, 救急要請した。大腿部から足趾まで腫張, 発赤, 一部壊疽を認め, CT検査でガス産生を伴っており, ガス壊疽 …

    KANTO Journal of Japanese Association for Acute Medicine 41(2), 290-293, 2020

    J-STAGE 

  • Development of Technology Generating Electric Energy Using Aluminum Based Waste (Technology of Hydrogen Generation from Paper-based Waste with Aluminum)  [in Japanese]

    Mizuki Nobuaki , Kawaguchi Kiyoshi

    … This system contributes the improvement of aluminum material flow and provides low-carbon solutions. … By introducing feedback mechanism, system pressure could be self-controlled, and system safety could be improved. … As the result that the gas analysis of generated hydrogen was conducted, it was found that impurities of hydrogen gas had almost no influence on the performance of fuel cell. …

    The Japanese Journal of the Institute of Industrial Applications Engineers 8(1), 84-92, 2020

    J-STAGE 

  • Flow Field and Combustion Field Control Using Pylons Installed Upstream of a Cavity in Supersonic Flow

    HIZAWA Tomohiro , YAMAGUCHI Tatsuya , MURATA Ko , YUGAMI Yasuto , HASEGAWA Mariko , KUDO Taku , HAYAKAWA Akihiro , KOBAYASHI Hideaki

    … A burned hydrogen/air gas mixture, rich in fuel, was injected in supersonic combustion experiments because self-ignition of fuel is difficult in a mainstream with low enthalpy. … Experimental data were collected using the shadowgraph method, direct photography of the flame, wall pressure measurement, and OH Planer Laser-induced Fluorescence (OH-PLIF) measurement. …

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 63(2), 50-61, 2020

    J-STAGE 

  • Dependence of Performance on Area Ratio in Pre-ionized Inert Gas Plasma MHD Generator  [in Japanese]

    Suzuki Hajime , Okuno Yoshihiro

    … <p>The effects of the generator shape and operating conditions on the power generating characteristics and the pre-ionization power in a seed-free pre-ionized inert gas plasma disk shaped MHD generator are examined by two-dimensional numerical simulation. …

    IEEJ Transactions on Power and Energy 140(3), 204-209, 2020

    J-STAGE 

  • Kinetics of CO Gas Dissolution into Stirred Liquid Fe at 1823 K and Its Impact on Nozzle Clogging during Continuous Casting

    Lee Joo-Hyeok , Kang Youn-Bae

    … <p>CO gas generated by a carbothermic reaction in Submerged Entry Nozzle (SEN) can reoxidize an Ultra Low C (ULC) steel during continuous casting. … When Ti presents in the ULC steel, the CO gas oxidizes the liquid steel and Fe<i><sub>t</sub></i>O–Al<sub>2</sub>O<sub>3</sub>–TiO<i><sub>x</sub></i> …

    ISIJ International 60(2), 258-266, 2020

    J-STAGE 

  • Real-Time Monitoring of Low Pressure Oxygen Molecules over Wide Temperature Range: Feasibility of Ultrathin Hybrid Films of Iridium(III) Complexes and Clay Nanosheets

    Sato Hisako , Takimoto Kazuyoshi , Kato Masaru , Nagaoka Shin-ichi , Tamura Kenji , Yamagishi Akihiko

    … The emission from the deposited films exhibited rapid reversible change of intensity in response to the introduction or evacuation of oxygen gas in the pressure range of 0.1–101.3 kPa and the temperature range from 253 K to 313 K. … The lifetime of the emission decay was measured as a function of oxygen pressure, confirming the occurrence of dynamic quenching of excited Ir(III) complexes by oxygen molecules.</p> …

    Bulletin of the Chemical Society of Japan 93(2), 194-199, 2020

    J-STAGE 

  • Proposal and Basic Characteristics Evaluation of Partial Closed Type Parafoil for Martian Exploration Probe  [in Japanese]

    Moriyoshi Takahiro , Maekawa Hiromu , Yamada Kazuhiko , Nishida Hiroyuki

    … However, a conventional parafoil which is ram air type might be not inflated by lower ram pressure at low density atmosphere environment. … To realize the planetary probe, we developed new-type parafoil which can be deployed by small gas injection. …

    JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 68(1), 47-55, 2020

    J-STAGE 

  • Improvement of Thermal Efficiency and Exhaust Emission in Diesel Engine by Applying Spray Internal EGR (Third Report):―The Combustion Characteristics Analysis of CO<sub>2</sub> Gas Dissolved Fuel using Two Color Method―  [in Japanese]

    Mukayama Tomoyuki , Nishigami Ryota , Asai Go , Kawabata Yuji , Kuribayashi Masaki , Yuzaki Keiichiro , Matsumura Eriko , Sedan Jiro

    本研究ではEGRガスを燃料に溶解させ気体析出効果により噴霧の微粒化を改善する手法の確立を目的とする.噴霧内のEGRガスが直接燃焼に寄与することでNOxの大幅な低減が期待できる.本報では画像二色法による火炎温度およびKL値解析を行ない,CO2ガス溶解燃料がNOxおよびすすの生成に与える影響を把握した.

    Transactions of Society of Automotive Engineers of Japan 51(1), 7-12, 2020

    J-STAGE 

  • Evaluation of Indicated Mean Effective Pressure Considering Centroid of Heat Release Rate of CI Engine  [in Japanese]

    Ichiyanagi Mitsuhisa , Shindo Ryota , Otsubo Koki , Suzuki Takashi

    著者らは,ディーゼル機関におけるオンボード用圧縮ポリトロープ指数予測モデルを開発してきた.予測に必要となる図示平均有効圧力(IMEP)は,0次元エンジン解析を用いて,熱発生率の重心から線図係数を求める経験式を導出し評価をした.経験式を用いたIMEPと実験結果の平均誤差は1.2%と評価された.

    Transactions of Society of Automotive Engineers of Japan 51(1), 53-59, 2020

    J-STAGE 

  • Current status and prospect of cryotherapy  [in Japanese]

    岩本 誠司 , 原田 雅史

    … Using high-pressure argon gas for freezing, the needle tip is brought to an extremely low temperature(-40℃)or lower, and the tumor cells are frozen and destroyed. …

    四国医学雑誌 = Shikoku acta medica 75(5・6), 125-130, 2019-12-25

    IR  Ichushi Web 

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