Search Results 1-20 of 1007

  • STUDY ON STRENGTH REDUCTION OF CONCRETE IN REINFORCED CONCRETE APARTMENT BUILDINGS BY FIRE-DAMAGED  [in Japanese]

    HARUHATA Masakazu , ARAI Makoto , IKEDA Kenichi

    … in terms of value.</p><p> In this study, the core is drilled from the heating surface of concrete after single-sided heating using a gas furnace, in order to grasp the strength reduction and damage depth of the damaged part concrete in the ceiling slab of RC apartment house, The relationship between the maximum temperature of the concrete heating surface and the compressive strength was determined.</p><p> In addition, the small size core was used to capture the change in strength between the …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (769), 439-447, 2020-03

    J-STAGE  AIJ 

  • Body cooling effects of immersion of the forearms in high-concentration artificial carbonic acid water at 25°C

    Tanaka Yuuki , Nagano Hisaho , Taimura Akihiro

    … BACKGROUND: This study examined the effects of immersion in stirred, high-concentration, artificial carbonic acid water on body cooling. … CONCLUSIONS: Our study suggests that immersion of the forearms in slowly stirred CO2 water at 25 °C reduces core temperature elevated by heat stress or exercise more effectively than does tap water at the same temperature. …

    Journal of physiological anthropology (39), 2, 2020-02-04

    IR 

  • A conceptual design study of pool-type sodium-cooled fast reactor with enhanced anti-seismic capability

    KUBO Shigenobu , WATANABE Osamu , HIGURASHI Koichi , CHIKAZAWA Yoshitaka , OHSHIMA Hiroyuki , UCHITA Masato , MIYAGAWA Takayuki , ETO Masao , SUZUNO Tetsuji , MATOBA Ichiyo , ENDO Junji

    … The design adopted enhanced RV support structure, enhanced conical-shaped core support structure, a thickened knuckle part of the RV, and a flat plenum separator with ribs. … Moreover, the configuration of the decay heat removal system has been investigated considering sufficient utilization of natural circulation capability of sodium coolant, heat removal capacity of each cooling system, conformance with design requirements, and recommendations of SDC and SDG such as diversity and redundancy of components.</p> …

    Mechanical Engineering Journal 7(3), 19-00489-19-00489, 2020

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  • Effect of finned structure on critical heat flux (CHF) in downward-face pool boiling

    WANG Kai , ERKAN Nejdet , OKAMOTO Koji

    … <p>Critical heat flux (CHF) plays an important role as the upper limit of heat dissipation process during the in-vessel reactor external reactor vessel cooling (IVR-ERVC). … IVR-ERVC is regarded as a very effective way to release the decay heat after the core melt. …

    Mechanical Engineering Journal 7(3), 19-00500-19-00500, 2020

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  • Phase Composition and Properties Distribution of Residual Iron in a Dissected Blast Furnace Hearth

    Zhang Lei , Zhang Jianliang , Jiao Kexin , Wang Cui

    … And then core drilling method was used to obtain a horizontal sample of residual iron, which was located 1610 mm below the centerline of taphole and had a length of 1840 mm. … And distribution of properties along the core sample from inside to cold side like density, degree of graphitization and thermal diffusion also have a big change. … These results are considered to be related to the function of cooling system.</p> …

    ISIJ International, 2020

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  • Effectiveness of a field-type liquid cooling vest for reducing heat strain while wearing protective clothing

    TOKIZAWA Ken , SON Su-Young , OKA Tatsuo , YASUDA Akinori

    … <p>This study examined the effectiveness of a field-type liquid cooling vest (LCV) worn underneath an impermeable protective suit on heat strain during walking. …

    Industrial Health 58(1), 63-71, 2020

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  • Simulation of thermal stress and fatigue life prediction of high speed steel work roll during hot rolling considering the initial residual stress

    Hu Kejun , Zhu Fuxian , Chen Jufang , Noda Nao-Aki , Han Wenqin , Sano Yoshikazu

    … Compressive residual stress at the shell is conductive to improving the thermal fatigue life of a work roll, while tensile stress in the core could cause thermal breakage. … In hot rolling, thermal stress occurs under the heating-cooling cycles over the roll surface due to the contact with the hot strip and water spray cooling. …

    Metals 9(9), 966-1-966-19, 2019-09-02

    IR 

  • Development of Non-annealing Casting Technology by Water Cooling Core in Large Cylinder Blocks  [in Japanese]

    荻野 知也 , 三村 保行 , 石川 知哉

    鋳造工学 = Journal of Japan Foundry Engineering Society 91(3), 155-159, 2019-03

  • Development of Controlled-Release DDS Carrier Applicated Temperature-Responsive Polymer  [in Japanese]

    KOBAYASHI Kodai , MORITA Yasuyuki , WAKIMOTO Takuma , KIMURA Yasuhiro , TOKU Yuhki , JU Yang

    … However, so far the reported controllable drug release DDSs require external stimulation such as light and cooling as triggers for drug release, which cannot reach the deep part inside the human body. … By modifying it to the surface of magnetic mesoporous silica, it is possible to realize the control of drug release of the DDS carrier triggered by the core heat generation induced by an alternating magnetic field, thereby realizing the control of drug release in the deep part inside the human body. …

    The Proceedings of the Materials and Mechanics Conference 2019(0), GS25, 2019

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  • Surgical treatment of giant ascending aortic aneurysm in a patient with a history of multiple cardiac surgeries  [in Japanese]

    HANADA Tomoki , KANETSUKI Kazuma , KAMIHIRA Satoshi , YAMAUCHI Masanobu

    … A resternotomy was performed via a femoro-femoral cardiopulmonary bypass with core cooling after the bilateral carotid arteries were accessed. …

    Medical Journal of Shimane Prefectural Central Hospital 43(0), 47-50, 2019

    J-STAGE  Ichushi Web 

  • Technology Development for Nuclear Safety Enhancement  [in Japanese]

    Goto Keita

    Journal of the Atomic Energy Society of Japan 61(4), 309-310, 2019

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  • Blackout in Hokkaido and Risk reduction by utilizing the safety improved NPPs  [in Japanese]

    NARABAYASHI Tadashi

    … <p>In Fukushima accident on 2011, after the loss of both the emergency core cooling system and IC core cooling, primary containment vessel (PCV) pressure increased. …

    The Proceedings of Mechanical Engineering Congress, Japan 2019(0), C08201, 2019

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  • Effect of cooling strategy on physiological and perspective response of elite woman sailing athlete during exercise in warm environment: a case study  [in Japanese]

    Nakamura Daisuke , Hasegawa Hiroshi , Nakamura Mariko , Hagiwara Masahiro , Takahashi Hideyuki

    … This case study aimed to investigate a method of effective body cooling between races in a female windsurfer in the Japanese National Team. … A resting period of approximately 20 minutes was set between the 1st and 2nd races and the cooling intervention was performed for 10 minutes under the following 3 conditions: (1) neck cooling with ice pack and forearm and hands water immersion up to the elbow in water (10℃). …

    Journal of High Performance Sport 4(0), 145-153, 2019

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  • Experimental Study on Characteristics of a Three-Phase Natural Circulation with TiO<sub>2</sub>, Water and Air  [in Japanese]

    FUJIOKA Kasumi , USUI Takumi , MOROOKA Shinichi

    … <p>The development of the molten core cooling system without the electric power based on a lesson of Fukushima daiichi nuclear power plant accident is carried out over the world. … Many researchers reported that the nano-fluid had the capability of critical heat flux enhancement and the nano-fluid could be applied to cool the molten core in combination with natural circulation flow. …

    JAPANESE JOURNAL OF MULTIPHASE FLOW 33(4), 397-404, 2019

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  • Cooling water circulation unit mountable on a wheelchair to assist body temperature regulation in persons with cervical spinal cord injury  [in Japanese]

    KITAGAWA Kennya , SUZURIKAWA Jun , AMAIKE Kakeru , Takashima Atsushi , Higuchi Yukiharu , TESHIMA Yoshinori , INOUE Takenobu , OGATA Toru

    … In a laboratory setting, neck cooling successfully suppressed the increase of core temperature in the subjects with cervical SCI during arm cranking. … However, the effect of neck cooling in a real outer environment has not been demonstrated. … In this study, we designed and prototyped a cooling water circulation unit that is mountable on a wheelchair. …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 2A2-A13, 2019

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  • Development of Large Frame Gas Turbine for Combined Cycle  [in Japanese]

    Atsumi Hidekatsu , Hashimoto Shinya , Hada Satoshi , Yuri Masanori , Kataoka Masahito

    … In addition, to further improve the efficiency of the gas turbine combined cycle power generation (GTCC) and enhance the operability, we replaced the steam-cooled system for the cooling of the combustor and developed a new enhanced air-cooled system. …

    The Proceedings of the National Symposium on Power and Energy Systems 2019.24(0), D121, 2019

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  • Study on Decay Heat Removal in Sodium-cooled Fast Reactors:-In-vessel Cooling Characteristics by Direct Heat Exchanger-  [in Japanese]

    EZURE Toshiki , ONOJIMA Takamitsu , KAMEYAMA Yuri , TANAKA Masaaki

    … In this study, a steady state sodium experiment was carried out using PLANDTL-2 facility to grasp the core cooling behavior only relying on the natural circulation inside the vessel using dipped-type DHX and to provide validation data for evaluation method based on numerical approaches. … As the result, temperature distributions in the core were quantitatively grasped under a situation where cold coolant from DHX penetrated the core. …

    The Proceedings of the National Symposium on Power and Energy Systems 2019.24(0), B112, 2019

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  • Block Metal-Fuel Fast Reactor  [in Japanese]

    TERAI Yuzo

    … This reactor that was proposed since 2018 has Block Metal-Fuel (U-Pu-10%Zr) as Fuel-Core which involves no metallic structure. … There is improving point, that is cooling temp. … Change to inlet 480℃, outlet 720℃ to put down void swelling, and get enough cooling effect. …

    The Proceedings of the National Symposium on Power and Energy Systems 2019.24(0), B113, 2019

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  • Comparison between Risk reduction of Nuclear Power Plant by increase Safety Measures and Increase of Natural Disaster by Global Warming  [in Japanese]

    NARABAYASHI Tadashi

    … In Fukushima accident on 2011, after the loss of both the emergency core cooling system and IC core cooling, primary containment vessel (PCV) pressure increased. …

    The Proceedings of the National Symposium on Power and Energy Systems 2019.24(0), B124, 2019

    J-STAGE 

  • EXPERIMENTAL INVESTIGATION ON INFLUENCE FACTORS OF NANOFLUIDS ON SATURATED POOL BOILING CHF FOR DOWNWARD FACING SURFACE

    Wang Chenglong , Deng Kuanghan , Su G.H. , Li Jianping , Tian Wenxi

    … After the severe accident inside a nuclear reactor, the IVR (In-vessel retention) management strategy is an effective way to keep the integrity of pressure vessel and reduce risk of radioactive leakage by holding the damaged core materials through External Reactor Vessel Cooling (ERVC). …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 2194, 2019

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