Search Results 1-20 of 2367

  • Population Densities of Pest Aphids and their Associated Natural Enemies on Faba Bean in Kafr EL–Sheikh, Egypt

    KHODEIR A. Ibrahim , KHATTAB A. Mohamed , RAKHA M. Osama , SHARABASH S. Amina , UENO Takatoshi , MOUSA M. Kareem

    … In the present study, we examined the population fluctuation and abundance of aphid species and their associated predators and parasitoids in faba bean fields during 2016/17 and 2017/18 seasons in Kafr EL–Shiekh, Egypt. … craccivora was detected throughout the growing season, the density is notably high in the early growth stage of faba bean. …

    九州大学大学院農学研究院紀要 65(1), 97-102, 2020-02

    IR 

  • METHOD FOR ADDING HIGH FREQUENCY COMPONENTS TO A VELOCITY FIELD OBTAINED FROM A MESOSCALE METEOROLOGICAL MODEL:-Application of spatial filtering and rescaling method-  [in Japanese]

    KAWAI Hidenori , TAMURA Tetsuro

    … <p> Turbulent structure derived from meteorological disturbance with low-frequency fluctuation affects different characteristics for the distribution of wind pressure and the peak value of concentration in comparison with the inflow condition using turbulent boundary layer (TBL) over smooth or rough surface in usual cases. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (767), 19-27, 2020-01

    J-STAGE  AIJ 

  • Temporal changes in benthic amphipod assemblages in the central part of the Ariake Sea during the five years following the dike closure in Isahaya Bay, Japan  [in Japanese]

    SUDO Hiroyuki , MATSUO Masatoshi , SATO Shin'ichi , AZUMA Mikio

    … In terms of total amphipod density, the order was as follows: group A>group B>group C. … These differences among groups A–C indicate that corophiid and photid species contribute significantly to the fluctuation of amphipod density and assemblages in the central part of the Ariake Sea. … In fact, an explosion of the amphipod density that occurred in June 2002 was attributed to rapid increases in the populations of <i>Crassicorophium</i> …

    Japanese Journal of Benthology 74(2), 100-108, 2020

    J-STAGE 

  • Evaluation of Intervention by an Antimicrobial Stewardship Team for Patients with Bacteremia  [in Japanese]

    Odawara Miki , Kodama Mayuko , Kubo Norihiko , Hiraki Yoichi , Yamashina Takuya , Irie Kenji , Yamashita Katsuya , Tsuruta Minako , Tsukada Hiroko , Tsuruyama Moeko , Kaneuchi Hiroshi , Hara Riho

    … There was no fluctuation in the consumption rate of carbapenem, TAZ/PIPC and other antibiotics, but there was a decreased annual consumption of antibiotics after AST intervention compared to before intervention. … For the carbapenems, antimicrobial use density (AUD) of meropenem (MEPM) was highest in both periods, at 20.1 and 20.4 before and after AST intervention, respectively, with no significant change after AST intervention. …

    YAKUGAKU ZASSHI 140(2), 319-328, 2020

    J-STAGE 

  • Effect of Coulomb Interaction and Disorder on Density of States in Conventional Superconductors

    Jujo Takanobu

    … The density of states of the disordered s-wave superconductor is calculated perturbatively. … Therefore, the correction to the density of states in the superconducting state exhibits an energy dependence different from that of the normal state. …

    2019-09-03

    IR 

  • Investigation of recombination front region in detached plasmas in a linear divertor plasma simulator

    吉川 正志 , N. Ohno , M. Seki , H. Ohshima , H. Tanaka , S. Kajita , Y. Hayashi , H. Natsume , H. Takano , I. Saeki , Masayuki YOSHIKAWA , H. van der Meiden

    … The 2D distribution of electron density, electron temperature, and plasma potential around the RFR, has been revealed for the first time. … The spatial distribution of the particle loss rate due to EIR estimated from electron temperature and electron density profiles indicated that the three-dimensional structure of the RFR adopts a cone structure. …

    Nuclear Materials and Energy (19), 458-462, 2019-05

    IR 

  • Relationship between Stress Response and Stress Tolerance Characteristics for Midwife Students

    高田 勝子

    … There are a few pieces of research that show the specific characteristic of stress reaction while there are many pieces of researches that related to the in-day fluctuation of stress and saliva cortisol. … Circadian variation of the individually different saliva cortisol density was judged by daily life of a target. …

    奈良学園大学紀要 = Bulletin of Nara Gakuen University 10, 63-73, 2019-03

    IR  Ichushi Web 

  • Ferroelectricity of stress-free and strained pure SrTiO_3 revealed by ab initio calculations with hybrid and density functionals

    Watanabe Yukio

    … The energy gain of stress-free FE, in comparison with the thermal and quantum fluctuation energy, indicates that a paraelectric phase emerges at room temperature by thermal fluctuations, but is near 0 K marginally close to the FE phase, which aligns with the experimental incipient FE. … For large compressive strain, e.g., 2%, the Perdew-Burke-Ernzerhof density functional for solids (PBEsol) yielded properties with P_S > …

    Physical Review B (99), 064107-1-064107-14, 2019-02-19

    IR 

  • STUDY ON INFLUENCE OF COMPUTATIONAL GRID RESOLUTION IN NUMERICAL SIMULATION OF UNSTEADY FLOW THAT TARGETS FLOW FIELD AROUND A ROOF:Fundamental study on prediction method of separation flow around building (Part 2)  [in Japanese]

    YAMADA Shinichi , YAMANAKA Toshio

    …  In numerical simulation of unsteady flow, since the spatial resolution of the velocity calculated at each time steps depends on the grid resolution, it is impossible to obtain the velocity fluctuation that smaller scale than the size of the calculational grid. …

    Journal of Environmental Engineering (Transactions of AIJ) (756), 179-186, 2019-02

    J-STAGE  AIJ 

  • The production of triton and reconstruction of 3ΛH with the Heavy Flavor Tracker in Au+Au collisions at STAR

    江角 晋一 , STAR Collaboration , ShinIchi ESUMI

    … The centrality dependence of the coalescence parameter B3 of triton and the collision energy dependence of the relative neutron density fluctuation are then calculated. … The results indicate that the B3 decreases from peripheral to central collisions and the neutron density fluctuation shows a non-monotonic collision energy dependence with a peak around collision energy of 20-30 GeV. …

    Nuclear physics. A (982), 811-814, 2019-02

    IR 

  • Fracture Analysis of Crosslinked Phenolic Resins byMolecular Dynamics Simulation with Reactive Force Field  [in Japanese]

    Yasuyuki Shudo , Atsushi Izumi , Katsumi Hagita , Mitsuhiro Shibayama

    <p>反応力場ReaxFF を用いた全原子分子動力学シミュレーションを行ない,引張変形下における架橋フェノール樹脂の破壊挙動解析を行った。平衡状態および線形弾性領域における材料物性は実験値および古典MD 結果を良好に再現した。大変形領域における応力-ひずみ特性および化学結合情報の変化を分析した結果,フェノール-メチレン間共有結合の選択的開裂が架橋構造の破壊の主要因であることが分かった。 …

    Journal of Networkpolymer,Japan 40(5), 229-237, 2019

    J-STAGE 

  • Multiscale analysis of material stability based on time series clustering method (K-Shape)  [in Japanese]

    Takagi Takuya , HASEBE Tadashi

    … Time-series data are analyzed, i.e., the incompatibility, dislocation density and the strain energy fluctuation, against two representative simulation results reported so far for FCC single crystal models yielding stable or unstable deformation modes, respectively. …

    The Proceedings of The Computational Mechanics Conference 2019.32(0), 132, 2019

    J-STAGE 

  • Experimental Investigation for Influence of Static Pressure and Steam Wetness on Pressure Fluctuation of Acoustic Resonance under Wet Steam Flow  [in Japanese]

    UCHIYAMA Yuta , MORITA Ryo

    … Moreover, the effect of the liquid phase in wet steam on the pressure fluctuation was considered to be small at a high pressure since the maximum amplitude under a high-quality wet steam increased with increasing density ratio. … In this study, we tried to investigate the combined effects of the steam wetness and static pressure on the pressure fluctuation. …

    The Proceedings of the Dynamics & Design Conference 2019(0), 628, 2019

    J-STAGE 

  • Performance of HAWT in Natural Wind by a Low-Cost Type Multi-fan ICT Control Wind Tunnel:(Effect of Integral Scale)  [in Japanese]

    TOSHIMITSU Kazuhiko , PORNTHISARN Parnravee , KIKUCHI Haruka , MATSUBARA Hiroyuki

    … <p>Recently, the wind turbine design is developing for higher performance through taking into consideration the effects of velocity fluctuation and turbulence of installation location wind. … The fluctuating velocity wind is successfully generated with mean velocity 7m/s, turbulent intensity 2% and turbulent integral scale 5, 10, 20m, which is based on Karman's power spectrum density function. …

    The Proceedings of Conference of Kyushu Branch 2019.72(0), E14, 2019

    J-STAGE 

  • EXPERIMENTAL STUDY ON FLOW INSTABILITY OF NATURAL CIRCULATION IN A VERTICAL RECTANGULAR MINI-CHANNEL UNDER ROLLING MOTION

    Yu Zhiting , Tan Sichao , Meng Haibo , Chen Chong , Zhou Yong

    … During the experiments, typical density wave oscillation (DWO) was observed in the static condition, and flow excursion also occurred when the heat flux reaches a relatively high value. … However, single-phase flow fluctuation, trough-type flow oscillation, coupled flow oscillation and density wave oscillation were found in the rolling condition. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 1732, 2019

    J-STAGE 

  • A STUDY ON THE CHARACTERISTICS OF ELBOW PIPE FLOW BASED ON PIV TECHNOLOGY

    Wang Shiming , Tai Yun , Yang Yongqiang , Li Longze , Qiu Jinrong , Yao Shiwei , Sun Yanfei , Yang Xingtuan

    … elbows in flow measurement of helium in HTGR, a simultaneous measurement method for measuring the average velocity and density of fluid by utilizing the 90° … In order to achieve this goal, the characteristics of elbow pipe flow must be deeply studied to reveal the mechanism of the pressure fluctuation in the elbow structure. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 1315, 2019

    J-STAGE 

  • NUMERICAL INVESTIGATION ON HEAT TRANSFER OF SUPERCRITICAL CARBON DIOXIDE IN ZIG-ZAG PCHE CHANNEL

    Hu Lian , Chen Deqi , Zeng Hao

    … The instantaneous turbulent flow result in the fluctuation and irregular distribution the temperature fields and heat transfer in the channel. … with high-density, low heat capacity and high thermal conductivity contacts with the wall to ensure a better heat transfer capability, which result in the large temperature gradient near wall. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 1397, 2019

    J-STAGE 

  • TRANSIENT RESPONSE CHARACTERISTICS IN MULTI-LOOP NATURAL CIRCULATION SYSTEM USING FREQUENCY RESPONSE TESTING METHOD

    Zahraddeen ABBATI , Zhao FULONG , Tan SICHAO , Chen JIARUI , Cheng KUN , He CHUAN , Shehu Adam IBRAHIM , Abd El Gawad K.

    … The natural circulation occurs due to buoyancy forces caused by density gradient. … However, presence of subcooled boiling will affect the density gradient in the closed loop which may lead to consequential effects. … At period of oscillation, T=2700, void fraction is seen to respond out of phase with the sinusoidal power fluctuation. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 1221, 2019

    J-STAGE 

  • Shear stress fluctuation measurements using an electrochemical method in pipe flow

    TONG Tong , TSUNEYOSHI Tatsuya , TSUJI Yoshiyuki

    … The relationship between the mass transfer and the momentum transfer, studied by Hanratty and Campbell (1983) and the Chilton–Colburn analogy (Chilton and Colburn, 1934), are compared to each other with respect to the mean wall shear stress and the wall shear stress fluctuation. … The wall shear stress fluctuations are compared via the probability density function and frequency spectrum. …

    Journal of Fluid Science and Technology 14(2), JFST0013-JFST0013, 2019

    J-STAGE 

  • Fundamental Principles and Characteristics of Electrochemical Capacitors  [in Japanese]

    NOHARA Shinji

    … Recently, they have received a great attention as electrical storage devices with high power density and long cycle life compared with secondary batteries, and have been extensively researched and developed. … Their contribution to leveling output fluctuation of renewable powers is also expected. …

    Vacuum and Surface Science 62(12), 698-702, 2019

    J-STAGE 

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