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  1. Article

    Open Access

    Direct evidence of electronic ferroelectricity in YbFe2O4 using neutron diffraction and nonlinear spectroscopy

    We report the first observation of room temperature spontaneous electric polarization in an electronic ferroelectric material, a YbFe2O4 single crystal. The observation was based on second harmonic generation (SH...

    K. Fujiwara, Y. Fukada, Y. Okuda, R. Seimiya, N. Ikeda, K. Yokoyama… in Scientific Reports (2021)

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  2. Article

    Open Access

    Observation of momentum-resolved charge fluctuations proximate to the charge-order phase using resonant inelastic x-ray scattering

    In strongly correlated electron systems, enhanced fluctuations in the proximity of the ordered states of electronic degrees of freedom often induce anomalous electronic properties such as unconventional superc...

    M. Yoshida, K. Ishii, M. Naka, S. Ishihara, I. Jarrige, K. Ikeuchi… in Scientific Reports (2016)

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  3. No Access

    Article

    Electrophoretic deposition—mechanisms, myths and materials

    Explanations of the deposition process during electrophoretic deposition (EPD) are presented and their boundary conditions discussed. It is suggested increasing resistance during EPD is due to the deposit and ...

    Y. Fukada, N. Nagarajan, W. Mekky, Y. Bao, H.-S. Kim… in Journal of Materials Science (2004)

  4. No Access

    Article

    Synthesis of graphite using laser decomposition of SiC

    The surface of polycrystalline silicon carbide with and without binder was modified by one pulse of 5 ms irradiation using an Nd:YAG laser in argon, carbon dioxide and air atmospheres. At the irradiated area o...

    Y. Ohkawara, T. Shinada, Y. Fukada, S. Ohshio, H. Saitoh… in Journal of Materials Science (2003)

  5. No Access

    Article

    Colocalization of pinopsin with two types of G-protein α-subunits in the chicken pineal gland

    Pinopsin is a photoreceptive molecule present in the outer segments of chicken pinealocytes. In this paper, the localization of α-subunits of G-proteins, rod transducin (Gt1) and Gq/11, was examined by immuno...

    A. Matsushita, T. Yoshikawa, T. Okano, T. Kasahara, Y. Fukada in Cell and Tissue Research (2000)

  6. No Access

    Article

    Effective high-dose chemotherapy followed by autologous peripheral blood stem cell transplantation in a patient with the aggressive form of cytophagic histiocytic panniculitis

    A 20-year-old Japanese man developed generalized, subcutaneous, painless nodules, fever, abnormal liver function, serosal effusions, hepatosplenomegaly, lymphadenopathy and anemia. Skin biopsies revealed lobul...

    K Koizumi, K Sawada, M Nishio, E Katagiri, J Fukae, Y Fukada… in Bone Marrow Transplantation (1997)

  7. No Access

    Article

    Localization of iodopsin and rod-opsin immunoreactivity in the retina and pineal complex of the river lamprey, Lampetra japonica

    The aim of this study has been to examine whether iodopsin immunoreaction exists in the photoreceptor cells of the retina of the river lamprey, Lampetra japonica, and whether this immunoreaction also appears in t...

    S. Tamotsu, T. Oishi, K. Nakao, Y. Fukada, Y. Shichida… in Cell and Tissue Research (1994)

  8. No Access

    Article

    Search for strange-quark matter in galactic cosmic rays

    A method for detecting strange-quark matter is discussed. In order to confirm the existence of strange-quark matter in the cosmic radiation, a new instrument under construction for a balloon experiment is pres...

    M. Aglietta, C. Castagnoli, A. Castellina, W. Fulgione, L. Periale… in Il Nuovo Cimento C (1991)

  9. No Access

    Article

    Immunohistochemical localization of iodopsin in the retina of the chicken and Japanese quail

    Localization of iodopsin in the retina of the chicken and Japanese quail was investigated immunohistochemically with the use of monoclonal antibodies (R1-R4) highly specific for R-photopsin (protein moiety of ...

    T. Oishi, A. Kawata, T. Hayashi, Y. Fukada, Y. Shichida… in Cell and Tissue Research (1990)

  10. No Access

    Article

    Activation of phosphodiesterase by rhodopsin and its analogues

    Activation of guanosine 3′,5′-cyclic monophosphate (cGMP) phosphodiesterase (EC 3.1.4.35.) in frog rod outer segment membrane by rhodopsin and its analogues was investigated. The Schiff-base linkage between op...

    T. Yoshizawa, Y. Fukada in Biophysics of structure and mechanism (1983)

  11. No Access

    Chapter

    Real Time Region Analysis for Image Data

    An important and difficult problem in image processing is to segment an image into several different kinds of regions. Unless we isolate regions, we cannot perform further processing for pattern recognition, s...

    Y. Fukada in Real-Time Parallel Computing (1981)

  12. No Access

    Article

    Size of the hard X-ray source in the Crab Nebula

    The size of the hard X-ray source in the Crab Nebula was observed with scintillation counters on board two balloons at a lunar occulatation on 24 January, 1975. The Gaussian width of the source is 34″ (+17″, −...

    Y. Fukada, S. Hayakawa, I. Kasahara, F. Makino, Y. Tanaka… in Astrophysics and Space Science (1976)

  13. No Access

    Article

    An impulsive solar X-ray burst in the energy range 90–400 keV

    A hard solar X-ray burst in the energy range 90–400 keV was observed at about 0528:30 UT on 13 April 1974. This event is peculiar in the sense that the X-ray flux is considerably high whereas the corresponding...

    Y. Fukada, S. Hayakawa, I. Kasahara, F. Makino, I. Suzuki, Y. Tanaka… in Solar Physics (1975)

  14. No Access

    Article

    Lunar occultation of the hard X-ray source in the Crab Nebula

    HARD X rays from the Crab Nebula were observed at a lunar occultation on 24 January 1975 with two sets of scintillation counters on board two balloons launched from Hyderabad (17°20′N, 78°27′E). The result obt...

    Y. FUKADA, S. HAYAKAWA, I. KASAHARA, F. MAKINO, Y. TANAKA, H. AKIYAMA… in Nature (1975)

  15. No Access

    Article

    Energy spectrum of diffuse component of cosmic soft γ rays

    IN this paper we present new measurements on the diffuse component of cosmic soft gamma rays in the energy range 0.1–4 MeV obtained with a balloon-borne telescope. These measurements show that the energy spect...

    Y. FUKADA, S. HAYAKAWA, I. KASAHARA, F. MAKINO, Y. TANAKA, B. V. SREEKANTAN in Nature (1975)

  16. No Access

    Article

    Rocket observation of energy spectrum of diffuse hard X-rays

    The energy spectrum of diffuse hard X-rays measured in the range 10–40 keV shows a rather sharp change of slope. The logarithmic derivative of the spectrum changes around 20–30 keV by the increment significant...

    Y. Fukada, S. Hayakawa, M. Ikeda, I. Kasahara, F. Makino… in Astrophysics and Space Science (1975)

  17. No Access

    Chapter

    Directionally Selective Units in the Cat’s Lateral Geniculate Nucleus

    Optic nerve fibres of the cat generally have receptive fields of either on-centre or off-centre type. They have been further classified into Type-I fibres which only respond transiently to an increase or a dec...

    Y. Fukada, H. Saito in The Visual System (1972)