Search Results 1-20 of 752

  • Reformation of the Electron Internal Transport Barrier with the Appearance of a Magnetic Island

    Kenmochi N. , Minami T. , Mizuuchi T. , Takahashi C. , Weir G. M. , Nishioka K. , Kobayashi S. , Nakamura Y. , Okada H. , Kado S. , Yamamoto S. , Ohshima S. , Konoshima S. , Ohtani Y. , Nagasaki K.

    … In this study, the foot point of the electron ITB (eITB) was observed to be reformed at the vicinity of a magnetic island when the island started to form. … In addition, the enhanced confinement region was observed to expand during the eITB formation according to the radial movement of the magnetic island toward the outer region. …

    Scientific Reports (10), 2020-01-08


  • Estimating Ripple Transport of Moderately-Confined Fast Tritons by D-D Fusion in JT-60SA Tokamak

    KURNIAWAN Anggi B. , TSUTSUI Hiroaki , TANI Keiji , SHINOHARA Kouji

    … <p>The 1 MeV fast triton transport is analyzed under the presence of magnetic ripple in JT-60SA operation scenario #3 which is expected to employ DD plasma. … Although the resonance energies were somewhat different, there is no significant difference between the resonance island size and diffusion coefficients obtained by the GC and FO schemes. …

    Plasma and Fusion Research 15(0), 2403057-2403057, 2020


  • Predictors for Incident Mild Parkinsonian Signs in Older Japanese

    Kishi Masafumi , Wada-isoe Kenji , Hanajima Ritsuko , Nakashima Kenji

    … t;<p><b>Methods </b>Participants aged 65 years or older, living in Ama-cho, a rural island town in western Japan, underwent a baseline assessment of motor function, cognitive function, depression score, the Pittsburgh Sleep Quality Index (PSQI), the Tanner questionnaire, and cerebral white matter lesions on brain magnetic resonance imaging from 2008 to 2010, and then underwent a follow-up neurological examination from …

    Yonago Acta Medica 63(1), 1-7, 2020

    IR  J-STAGE 

  • 3-D inversion of magnetic data based on the L1-L2 norm regularization

    Utsugi Mitsuru

    Magnetic inversion is one of the popular methods to obtain information about the subsurface structure. … As a result, several different models fit the observed magnetic data with the same accuracy. … To obtain a focused magnetic model, I introduce L1 norm regularization. … However, by using L1 norm regularization solely, an excessively concentrated model is obtained due to the nature of the L1 norm regularization and a lack of linear independence of the magnetic equations. …

    Earth, Planets and Space (71), 2019-07-03


  • Cytotoxic sesquiterpenoids from soft soral capnella imbricata  [in Japanese]

    Phan Chin Soon , Kamada Takashi , Ishii Takahiro , Hamada Toshiyuki , Vairappan Charles Santhanaraju

    … A new sesquiterpene, capgermacrene H (1) was isolated together with 7 other compounds, capgermacrenes A-G (2-8), from a population of soft coral Capnella imbricata collected from Mantanani Island, Sabah, Malaysia. … The structure of this metabolite was elucidated based on spectroscopic data such as nuclear magnetic resonance and high-resolution electrospray ionization mass spectrometry. …

    Natural Product Communications 14(6), 2019-06-25


  • Magnetic Island Formation in Coexisting System of Resonant Magnetic Perturbation and Perturbed Bootstrap Current

    Nishimura Seiya , Numata Ryusuke

    Journal of the Physical Society of Japan 88(6), 064501-1-8, 2019-06


  • Creating nano-patterns indicating different orientation for liquid crystal and functionalization of them  [in Japanese]

    Fukunaga Yu , Okumura Yasushi , Kikuchi Hirotsugu

    … <p>A sea-island pattern of gold particles layer domains on the polyimide-coated substrate surface was created by magnetron sputtering deposition through a mesh mask. … Magnetic field response of the nematic director of the liquid crystal filled in a cell prepared with a pair of the substrates with the sea-island pattern was observed with a polarization microscope. …

    Proceedings of Japanese Liquid Crystal Society Annual meeting 2019(0), PB11, 2019


  • Laparoscopic treatment of uterine myoma complicated by urinary retention: A case report  [in Japanese]

    Yamasaki Yui , Morita Hiroki , Kojima Nobue , Takeuchi Kyosuke

    … Pelvic magnetic resonance imaging revealed a myoma located in the upper portion of the posterior uterine wall with a longer diameter of 11.5 cm. …


    J-STAGE  Ichushi Web 

  • Effect of Resonant Magnetic Perturbation Field on Energetic Ion Behavior in the Large Helical Device

    OGAWA Kunihiro , OSAKABE Masaki , the LHD Experiment Group , BOZHENKOV Sergey A. , ÄKÄSLOMPOLO Simppa , ISOBE Mitsutaka , NUGA Hideo , SEKI Ryosuke , KAMIO Shuji , FUJIWARA Yutaka , NISHITANI Takeo

    … <p>A study of the resonant magnetic perturbation (RMP) effect on transit beam ion behavior is performed using the total neutron emission rate (<i>S</i><sub>n</sub>) measurement of the deuterium plasma in the Large Helical Device. …

    Plasma and Fusion Research 14(0), 1202159-1202159, 2019


  • Application of Terrestrial Close-Range Photogrammetry for Estimating Stem Volume of Tree Species in Subtropical Forest in Okinawa, Japan

    Tamaki Yuki , Konoshima Masashi

    … The two issues are the introduction of carbon certification program and the nomination of northern Okinawa Island as a World Natural Heritage site. … For examination of the accuracy of terrestrial photogrammetry, we compared the stem volume estimated from photogrammetry with the stem volume computed based on direct measurement using 3D magnetic motion tracker. …

    FORMATH 18(0), n/a, 2019


  • Initial magnetic susceptibility measurements of the Ryoke granitic rocks in Takeshima Island, Gamagori City, Aichi Prefecture, Japan  [in Japanese]

    Hoshi Hiroyuki , Morisato Maki

    愛知県蒲郡市竹島は,花崗岩質岩石(苦鉄質岩を含む)の露頭および転石に残された矢穴と刻印の存在から名古屋城石垣採石丁場の一つと考えられている。それを自然科学的手法により検証し名古屋城築城の実態解明に資する基礎データを得るために,筆者らは竹島を構成する花崗岩質岩石の帯磁率(初磁化率または初帯磁率)を測定した。竹島の帯磁率は最小値(0.05×10−3 SI)と最大値(56.3×10−3 SI)の差が3桁 …

    Nagoya Journal of Space and Earth Sciences 81(0), 15-20, 2019

    IR  J-STAGE 

  • Plasmoid at Magnetic Reconnection  [in Japanese]

    小野 靖 , 田辺 博士

    プラズマ・核融合学会誌 = Journal of plasma and fusion research 94(8), 410-413, 2018-08

  • Plasma Transport inside Magnetic Island  [in Japanese]

    稲垣 滋

    プラズマ・核融合学会誌 = Journal of plasma and fusion research 94(8), 406-409, 2018-08

  • Magnetic Islands Caused by Neoclassical Tearing Modes  [in Japanese]

    諫山 明彦

    プラズマ・核融合学会誌 = Journal of plasma and fusion research 94(8), 402-405, 2018-08

  • Formation and Healing of Magnetic Island  [in Japanese]

    鈴木 康浩

    プラズマ・核融合学会誌 = Journal of plasma and fusion research 94(8), 396-401, 2018-08

  • A new miniaturized magnetometer system for long-term distributed observation on the seafloor

    Ogawa Kazunori , Matsuno Tetsuo , Ichihara Hiroshi , Nakahigashi Kazuo , Seama Nobukazu

    … In situ magnetic field observation on the seafloor is an essential geophysical technique to investigate structures of the oceanic crust and the upper mantle, many of which are still frontier as to observational evidences. … This magnetometer system is capable of observing orthogonal three-axis magnetic fields continuously with sampling frequency of 5 Hz at maximum and an accuracy of ~ 0.1 nT. …

    Earth, Planets and Space (70), 111, 2018-07-03


  • Simulated Annealing for MHD Equilibria with Flow and/or Magnetic Island  [in Japanese]

    古川 勝

    プラズマ・核融合学会誌 = Journal of plasma and fusion research 94(7), 341-348, 2018-07

  • Structural characterization of the body frame and spicules of a glass sponge

    Arasuna Akane , Kigawa Masahito , Fujii Shunsuke , Endo Takatsugu , Takahashi Kenji , Okuno Masayuki , 荒砂 茜 , 髙橋 憲司 , 奥野 正幸

    … The nanostructure (atomic-scale structure) and water species in the body frame and spicules of the marine glass sponge, Euplectella aspergillum, collected from the sea floor around Cebu Island was characterized in detail by thermogravimetric differential thermal analysis, nuclear magnetic resonance spectroscopy, Raman and infrared spectroscopies, and X-ray diffraction method. …

    Minerals = Minerals 8(3), 88, 2018-02-27

    IR  DOI 

  • Triggering of Neoclassical Tearing Mode by Error Field Penetration

    NISHIMURA Seiya , NUMATA Ryusuke

    … In the case where the plasma flow and the electron diamagnetic drift completely cancel out each other, a vacuum island width necessary for triggering the born-locked NTM is much smaller than a seed island width necessary for triggering the original NTM. …

    Plasma and Fusion Research 13(0), 1203104-1203104, 2018


  • Calcification of the Ligamentum Flavum in the Cervical Spine―Our Experiences and a Review of the Literatures―  [in Japanese]

    Nishikawa Misao , Ikuno Hiromichi , Ohshige Hideyuki , Masamura Seiya , Inoue Takeshi , Kidosaki Yusuke , Nakanishi Yuta , Ohata Hiroki , Nagahama Atsufumi , Uda Hiroshi

    … Neuroradiological examinations were performed using computed tomography (CT) and magnetic resonance imaging (MRI). … MRI demonstrated a low intensity round lesion resembling an island in the ligamentum flavum. …

    Spinal Surgery 32(1), 46-55, 2018

    J-STAGE  Ichushi Web 

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