M Tanaka

National Institute for Fusion Science, Tokitsu-chō, Gifu, Japan

Are you M Tanaka?

Claim your profile

Publications (806)2059.53 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: The first fast-timing measurements from nuclides produced via the in-flight fission mechanism are reported. The lifetimes of the first 2+2+ states in 104,106Zr nuclei have been measured via β-delayed γ -ray timing of stopped radioactive isotope beams. An improved precision for the lifetime of the View the MathML source21+ state in 104Zr was obtained, View the MathML sourceτ(21+)=2.90−20+25 ns, as well as a first measurement of the View the MathML source21+ state in 106Zr, View the MathML sourceτ(21+)=2.60−15+20 ns, with corresponding reduced transition probabilities of View the MathML sourceB(E2;21+→0g.s.+)=0.39(2) e2b2 and 0.31(1) e2b20.31(1) e2b2, respectively. Comparisons of the extracted ground-state deformations, β2=0.39(1)β2=0.39(1) (104Zr) and β2=0.36(1)β2=0.36(1) (106Zr) with model calculations indicate a persistence of prolate deformation. The data show that 104Zr is the most deformed of the neutron-rich Zr isotopes measured so far.
    Physics Letters B 09/2016; DOI:10.1016/j.physletb.2015.09.043 · 6.13 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Muonic X-ray measurement by the use of cosmic muon has a potential to identify nuclear material in containers. We performed a feasibility study by using an iron target. Two plastic scintillators detected incoming cosmic-ray muons and a veto scintillator identified muons stopped in the target. Germanium detectors in coincidence with the scintillators measured muonic X-ray energies. We clearly observed muonic X-ray peaks in the photon spectrum, of which the energies were consistent with known muonic X-ray energies. By using the obtained spectrum, input parameters of the Monte-Carlo simulation were checked. The simulation for uranium target showed that this method is promising.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Using data collected with the Belle detector in the energy region of the $\Upsilon(10860)$ and $\Upsilon(11020)$ resonances we measure the $e^+e^- \to h_b(nP)\pi^+\pi^-$ $(n=1,2)$ cross sections. Their energy dependences show clear $\Upsilon(10860)$ and $\Upsilon(11020)$ peaks with a small or no non-resonant contribution. We study resonant structure of the $\Upsilon(11020) \to h_b(nP)\pi^+\pi^-$ transitions and find evidence that they proceed entirely via intermediate charged bottomonium-like states $Z_b(10610)$ and/or $Z_b(10650)$ (with current statistics we can not discriminate hypotheses of one or two intermediate states).
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: List of contributions from the CTA Consortium presented at the 34th International Cosmic Ray Conference, 30 July - 6 August 2015, The Hague, The Netherlands.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The near-infrared (NIR) spectral range (2-5 μm) contains a number of interesting features for the study of the interstellar medium. In particular, the aromatic and aliphatic components in carbonaceous dust can be investigated most efficiently with the NIR spectroscopy. We analyze NIR spectra of the diffuse Galactic emission taken with the Infrared Camera onboard AKARI and find that the aliphatic to aromatic emission band ratio decreases toward the ionized gas, which suggests processing of the band carriers in the ionized region.
    Proceedings of the International Astronomical Union 08/2015; 10(H16):703-704. DOI:10.1017/S1743921314012976
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: We present an extraction of azimuthal correlations between two pairs of charged pions detected in opposite jets from electron-positron annihilation. These correlations may arise from the dependence of the di-pion fragmentation on the polarization of the parent quark in the process $e^+e^- \rightarrow q \bar{q}$. Due to the correlation of the quark polarizations, the cross-section of di-pion pair production, in which the pion pairs are detected in opposite jets in a dijet event, exhibits a modulation in the azimuthal angles of the planes containing the hadron pairs with respect to the production plane. The measurement of this modulation allows access to combinations of fragmentation functions that are sensitive to the quark's transverse polarization and helicity. Within our uncertainties we do not observe a significant signal from the previously unmeasured helicity dependent fragmentation function $G_1^\perp$. This measurement uses a dataset of 938~fb$^{-1}$ collected by the Belle experiment at or near $\sqrt{s}\approx10.58$ GeV.
  • N Akata · H Kakiuchi · T Tamari · M Tanaka · T Kawano · H Miyake · T Uda · K Nishimura
    [Show abstract] [Hide abstract]
    ABSTRACT: Free water tritium (FWT) and organically bound tritium (OBT) concentrations in pine needles have been investigated to understand the regional background tritium concentration in Toki City. Samples were regularly collected from pine trees on the National Institute for Fusion Science campus (1998-2012) and the nearby Shiomi Park (SP; 2002-12). FWT and OBT concentrations of the former samples ranged from 0.33 to 0.92 and 0.41 to 1.10 Bq l(-1), respectively, while those of the latter samples ranged from 0.32 to 0.86 and 0.33 to 0.79 Bq l(-1), respectively. Results of both sampling sites were almost the same, and they have been gradually decreased year by year. Concentration level of tritium for Toki City was close to the average background level in Japan. The OBT/FWT ratios were almost 1.0. The apparent half-life of FWT in this period was estimated as almost 10 y, and that of OBT was estimated as almost 12 y; these values were almost the same as the physical half-life. © The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.
    Radiation Protection Dosimetry 05/2015; DOI:10.1093/rpd/ncv246 · 0.91 Impact Factor
  • M Tanaka · T Uda
    [Show abstract] [Hide abstract]
    ABSTRACT: Atmospheric tritium concentrations of HTO, HT and CH3T have been measured at Toki, Japan, for the environmental impact assessment of tritium for a fusion test facility. According to the data from 2004 to 2012, the concentrations of HT and HTO in water vapour tend to increase in spring. The seasonal variation in HT concentration at Toki was compared with the H2 concentration between 1990 and 2005 at Tae-ahn Peninsula, Republic of Korea, which is at approximately the same latitude as Toki. The monthly average of HT-specific activity varied from 1.24 × 10(5) to 1.76 × 10(5) TU. The peak of the monthly average H2 concentration did not match that of HT. This indicates that the mechanism of the production or the source of HT might be different from the production mechanism of H2. © The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.
    Radiation Protection Dosimetry 05/2015; DOI:10.1093/rpd/ncv241 · 0.91 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: We report the late-time evolution of Type IIb Supernova (SN IIb) 2013df. SN 2013df showed a dramatic change in its spectral features at ~1 year after the explosion. Early on it showed typical characteristics shared by SNe IIb/Ib/Ic dominated by metal emission lines, while later on it was dominated by broad and flat-topped Halpha and He I emissions. The late-time spectra are strikingly similar to SN IIb 1993J, which is the only previous example clearly showing the same transition. This late-time evolution is fully explained by a change in the energy input from the 56Co decay to the interaction between the SN ejecta and dense circumstellar matter (CSM). The mass loss rate is derived to be (~5.4 +- 3.2) x 10^{-5} Msun/yr (for the wind velocity of ~20 km/s, similar to SN 1993J but larger than SN IIb 2011dh by an order of magnitude. The striking similarity between SNe 2013df and 1993J in the (candidate) progenitors and the CSM environments, and the contrast in these natures to SN 2011dh, infer that there is a link between the natures of the progenitor and the mass loss: SNe IIb with a more extended progenitor have experienced a much stronger mass loss in the final centuries toward the explosion. It might indicate that SNe IIb from a more extended progenitor are the explosions during a strong binary interaction phase, while those from a less extended progenitor have a delay between the strong binary interaction and the explosion.
    The Astrophysical Journal 04/2015; 807(1). DOI:10.1088/0004-637X/807/1/35 · 5.99 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Simultaneous pancreas-kidney transplantation (SPK) is a definitive treatment for type 1 diabetics with end-stage renal disease (ESRD). Because of the shortage of deceased donors in Japan, the mortality rate during the waiting period is high. We evaluated mortality risk in patients with type 1 diabetes waiting for SPK, and the benefit of living-donor kidney transplantation (LDK) preceding pancreas transplantation, which may reduce mortality in patients awaiting SPK. This retrospective study included 71 patients with type 1 diabetes. Twenty-six patients underwent SPK, 15 underwent LDK, and 30 were waiting for SPK. Their cumulative patient and graft survival rates were retrospectively evaluated. Risk factors contributing to mortality in patients with type 1 diabetes awaiting SPK were evaluated with the use of a Cox proportional hazards model. The 5-year cumulative patient survival rates in the SPK and LDK groups were 100% and 93.3%, respectively (P = .19), and 5-year kidney graft survival rates were 95.7% and 100% (P = .46), respectively. The cumulative survival rate in patients awaiting SPK was 77.7% at 5 years after registration. Duration of dialysis was the only factor significantly associated with patient and graft survivals according to both univariate and multivariate analyses. Patient and graft survival rates were similar in the SPK and LDK groups, but the survival rate of patients awaiting SPK decreased over time. Duration of dialysis was an independent risk factor for patient and graft survival. LDK preceding pancreas transplantation may be an effective therapeutic option for patients with type 1 diabetes and ESRD. Copyright © 2015 Elsevier Inc. All rights reserved.
    Transplantation Proceedings 04/2015; 47(3):733-7. DOI:10.1016/j.transproceed.2014.12.048 · 0.98 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Renal transplantation has been established as a treatment for end-stage renal disease (ESRD) due to diabetic nephropathy. However, few studies have focused on the outcome after renal transplantation in patients with ESRD and type 2 diabetic nephropathy. To investigate the effect of renal transplantation on ESRD with type 2 diabetic nephropathy, we retrospectively analyzed patients who received renal transplantation at our facility. This study aimed to compare the outcome of renal transplantation for type 2 diabetic nephropathy with that for nondiabetic nephropathy. We studied 290 adult patients, including 65 with type 2 diabetic nephropathy (DM group) and 225 with nondiabetic nephropathy (NDM group), who underwent living-donor renal transplantation at our facility from February 2008 to March 2013. We compared the 2 groups retrospectively. In the DM and NDM groups, the 5-year patient survival rates were 96.6% and 98.7%, and the 5-year graft survival rates were 96.8% and 98.0%, respectively, with no significant differences between the groups. There were no significant differences in the rates of surgical complications, rejection, and infection. The cumulative incidence of postoperative cardiovascular events was higher in the DM group than in the NDM group (8.5% vs 0.49% at 5 years; P = .002). Patient and graft survival rates after renal transplantation for type 2 diabetic nephropathy are not inferior to those for recipients without diabetic nephropathy. Considering the poor prognosis of patients with diabetic nephropathy on dialysis, renal transplantation can provide significant benefits for these patients. Copyright © 2015 Elsevier Inc. All rights reserved.
    Transplantation Proceedings 03/2015; 47(3). DOI:10.1016/j.transproceed.2014.12.047 · 0.98 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The half-lives of 21+ states were measured for 102,104Zr and 106,108Mo to test a new implementation of a LaBr3(Ce) array at the RIBF, RIKEN, Japan. The nuclei of interest were produced through the fission of a 345 MeV/nucleon 238U beam and selected by the BigRIPS separator. Fission fragments were implanted into the WAS3ABi active stopper, surrounding which, 18 LaBr3(Ce) detectors provided fast γ-ray detection. Timing between the LaBr3(Ce) array and plastic scintillators allowed for the measurement of half-lives of low-lying states. The preliminary results, which agree with literature values, are presented along with experimental details.
    Acta Physica Polonica Series B 03/2015; 46(3):721. DOI:10.5506/APhysPolB.46.721 · 0.85 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Ultra-deep observations of ECDF-S with Chandra and XMM-Newton enable a search for extended X-ray emission down to an unprecedented flux of $2\times10^{-16}$ ergs s$^{-1}$ cm$^{-2}$. We present the search for the extended emission on spatial scales of 32$^{\prime\prime}$ in both Chandra and XMM data, covering 0.3 square degrees and model the extended emission on scales of arcminutes. We present a catalog of 46 spectroscopically identified groups, reaching a redshift of 1.6. We show that the statistical properties of ECDF-S, such as logN-logS and X-ray luminosity function are broadly consistent with LCDM, with the exception that dn/dz/d$\Omega$ test reveals that a redshift range of $0.2<z<0.5$ in ECDF-S is sparsely populated. The lack of nearby structure, however, makes studies of high-redshift groups particularly easier both in X-rays and lensing, due to a lower level of clustered foreground. We present one and two point statistics of the galaxy groups as well as weak-lensing analysis to show that the detected low-luminosity systems are indeed low-mass systems. We verify the applicability of the scaling relations between the X-ray luminosity and the total mass of the group, derived for the COSMOS survey to lower masses and higher redshifts probed by ECDF-S by means of stacked weak lensing and clustering analysis, constraining any possible departures to be within 30\% in mass. Abridged.
  • [Show abstract] [Hide abstract]
    ABSTRACT: We herein present a novel technique for laparoscopic en bloc excision involving anteriorly extended intersphincteric resection with partial resection of the posterior lobe of the prostate for large rectal gastrointestinal stromal tumors (GISTs). The sequence of neoadjuvant imatinib therapy and this less invasive surgery for marginally resectable rectal GISTs has the potential to obviate the need for urinary reconstruction and permanent stomas without jeopardizing the tumor margin status.
    Techniques in Coloproctology 12/2014; 19(4). DOI:10.1007/s10151-014-1261-6 · 2.04 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Excited states in the N=102 isotones ^{166}Gd and ^{164}Sm have been observed following isomeric decay for the first time at RIBF, RIKEN. The half-lives of the isomeric states have been measured to be 950(60) and 600(140) ns for ^{166}Gd and ^{164}Sm, respectively. Based on the decay patterns and potential energy surface calculations, including β_{6} deformation, a spin and parity of 6^{-} has been assigned to the isomeric states in both nuclei. Collective observables are discussed in light of the systematics of the region, giving insight into nuclear shape evolution. The decrease in the ground-band energies of ^{166}Gd and ^{164}Sm (N=102) compared to ^{164}Gd and ^{162}Sm (N=100), respectively, presents evidence for the predicted deformed shell closure at N=100.
    Physical Review Letters 12/2014; 113(26):262502. · 7.51 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Precise reaction cross sections (σR) for 24−38Mg on C targets at energies around 240 MeV/nucleon have been measured at the Radioactive Isotope Beam Factory at RIKEN. The σR for 36−38Mg have been measured for the first time. An enhancement of σR compared to the systematics for spherical stable nuclei has been observed, especially in the neutron-rich region, which reflects the deformation of those isotopes. In the vicinity of the drip line the σR for 37Mg is especially large. It is shown by analysis using a recently developed theoretical method that this prominent enhancement of σR for 37Mg should come from the p-orbital halo formation breaking the N = 28 shell gap.
    Physical Review C 12/2014; 89(6). DOI:10.1103/PhysRevC.90.061305 · 3.73 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: This review presents the recent progress in computational materials design, experimental realization, and control methods of spinodal nanodecomposition under three- and two-dimensional crystal-growth conditions in spintronic materials, such as magnetically doped semiconductors. The computational description of nanodecomposition, performed by combining first-principles calculations with kinetic Monte Carlo simulations, is discussed together with extensive electron microscopy, synchrotron radiation, scanning probe, and ion beam methods that have been employed to visualize binodal and spinodal nanodecomposition (chemical phase separation) as well as nanoprecipitation (crystallographic phase separation) in a range of semiconductor compounds with a concentration of transition metal (TM) impurities beyond the solubility limit. The role of growth conditions, co-doping by shallow impurities, kinetic barriers, and surface reactions in controlling the aggregation of magnetic cations is highlighted. According to theoretical simulations and experimental results the TM-rich regions appear either in the form of nanodots (the {\em dairiseki} phase) or nanocolumns (the {\em konbu} phase) buried in the host semiconductor. Particular attention is paid to Mn-doped group III arsenides and antimonides, TM-doped group III nitrides, Mn- and Fe-doped Ge, and Cr-doped group II chalcogenides, in which ferromagnetic features persisting up to above room temperature correlate with the presence of nanodecomposition and account for the application-relevant magneto-optical and magnetotransport properties of these compounds. Finally, it is pointed out that spinodal nanodecomposition can be viewed as a new class of bottom-up approach to nanofabrication.
  • Source
  • [Show abstract] [Hide abstract]
    ABSTRACT: The paper describes a time- and angle-resolved photoemission apparatus consisting of a hemispherical analyzer and a pulsed laser source. We demonstrate 1.48-eV pump and 5.92-eV probe measurements at the 10.5-meV and 240-fs resolutions by use of fairly monochromatic 170-fs pulses delivered from a regeneratively amplified Ti:sapphire laser system operating typically at 250 kHz. The apparatus is capable to resolve the optically filled superconducting peak in the unoccupied states of a cuprate superconductor, Bi2Sr2CaCu2O8 + δ. A dataset recorded on Bi(111) surface is also presented. Technical descriptions include the followings: A simple procedure to fine-tune the spatio-temporal overlap of the pump-and-probe beams and their diameters; achieving a long-term stability of the system that enables a normalization-free dataset acquisition; changing the repetition rate by utilizing acoustic optical modulator and frequency-division circuit.
    Review of Scientific Instruments 11/2014; 85(12). DOI:10.1063/1.4903788 · 1.61 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The CFHTLS presents a unique data set for weak lensing studies, having high quality imaging and deep multi-band photometry. We have initiated an XMM-CFHTLS project to provide X-ray observations of the brightest X-ray selected clusters within the wide CFHTLS area. Performance of these observations and the high quality of CFHTLS data, allows us to revisit the identification of X-ray sources, introducing automated reproducible algorithms, based on the multi-color red sequence finder. We have also introduced a new optical mass proxy. We provide the calibration of the red sequence observed in the CFHT filters and compare the results with the traditional single color red sequence and photoz. We test the identification algorithm on the subset of highly significant XMM clusters and identify 100% of the sample. We find that the integrated z-band luminosity of the red sequence galaxies correlates well with the X-ray luminosity with a surprisingly small scatter of 0.20 dex. We further use the multi-color red sequence to reduce spurious detections in the full XMM and RASS data sets, resulting in catalogs of 196 and 32 clusters, respectively. We made spectroscopic follow-up observations of some of these systems with HECTOSPEC and in combination with BOSS DR9 data. We also describe the modifications needed to the source detection algorithm in order to keep high purity of extended sources in the shallow X-ray data. We also present the scaling relation between X-ray luminosity and velocity dispersion.
    The Astrophysical Journal 11/2014; 799(1). DOI:10.1088/0004-637X/799/1/60 · 5.99 Impact Factor

Publication Stats

12k Citations
2,059.53 Total Impact Points


  • 1996–2015
    • National Institute for Fusion Science
      • Department of Helical Plasma Research
      Tokitsu-chō, Gifu, Japan
    • Kanazawa Medical University
      Kanazawa, Ishikawa, Japan
  • 1973–2015
    • Kyushu University
      • • Department of Surgery and Oncology
      • • Division of Surgery
      • • Medical Hospital
      • • Department of Urology
      • • Division of Internal Medicine
      Hukuoka, Fukuoka, Japan
  • 2014
    • Kyoto University
      Kioto, Kyōto, Japan
  • 2013–2014
    • University of Maryland, Baltimore County
      Baltimore, Maryland, United States
    • National Institutes Of Natural Sciences
      Edo, Tōkyō, Japan
    • Hiroshima University
      • Division of Physical Sciences
      Hirosima, Hiroshima, Japan
  • 2012–2014
    • National Astronomical Observatory of Japan
      Edo, Tōkyō, Japan
  • 1998–2014
    • Osaka University
      • • Department of Physics
      • • Institute of Laser Engineering
      • • Research Center for Nuclear Physics
      Suika, Ōsaka, Japan
    • St. Luke's International Hospital
      Edo, Tōkyō, Japan
  • 2006–2013
    • Japan Atomic Energy Agency
      • • Quantum Beam Science Directorate
      • • Advanced Photon Research Center
      Muramatsu, Niigata, Japan
    • NEC Corporation
      Edo, Tōkyō, Japan
    • Japan Synchrotron Radiation Research Institute (JASRI)
      Tatsuno, Hyōgo, Japan
  • 2005–2013
    • Osaka City University
      Ōsaka, Ōsaka, Japan
  • 1986–2013
    • The University of Tokyo
      • • Institute for the Physics and Mathematics of the Universe (IPMU)
      • • Department of Astronomy
      • • Faculty & Graduate School of Medicine
      • • Department of Electrical and Electronics Engineering
      • • Institute for Solid State Physics
      • • Institute of Industrial Science
      白山, Tōkyō, Japan
  • 1925–2012
    • European Southern Observatory
      Arching, Bavaria, Germany
  • 2011
    • Paris Diderot University
      Lutetia Parisorum, Île-de-France, France
  • 2010
    • Tokyo Institute of Technology
      • Graduate School of Interdisciplinary Science and Engineering
      Edo, Tōkyō, Japan
    • Pierre and Marie Curie University - Paris 6
      • Institut d'astrophysique de Paris
      Paris, Ile-de-France, France
    • Showa University
      • Department of Oral and Maxillofacial Surgery
      Shinagawa, Tōkyō, Japan
    • French National Centre for Scientific Research
      • Institut d'astrophysique spatiale (IAS)
      Lutetia Parisorum, Île-de-France, France
  • 2001–2010
    • Kobe Tokiwa University
      Kōbe, Hyōgo, Japan
      Edo, Tōkyō, Japan
  • 1995–2010
    • Hokkaido University
      • • Laboratory of Medicinal Chemistry
      • • Faculty of Pharmaceutical Sciences
      Sapporo, Hokkaidō, Japan
    • National Cancer Institute (USA)
      베서스다, Maryland, United States
  • 1982–2010
    • Tohoku University
      • • Research Center of Atmospheric and Oceanic Studies
      • • Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
      Sendai, Kagoshima-ken, Japan
  • 2009
    • California Institute of Technology
      • Spitzer Science Center
      Pasadena, California, United States
    • Laboratoire d’Informatique Fondamentale de Marseille
      Marsiglia, Provence-Alpes-Côte d'Azur, France
  • 1997–2009
    • Toshiba Corporation
      Edo, Tōkyō, Japan
  • 1994–2009
    • Nara Medical University
      • Department of Urology
      Kashihara, Nara, Japan
    • Dallas Zoo
      Dallas, Texas, United States
    • The University of Tokushima
      Tokusima, Tokushima, Japan
  • 2008
    • Ehime University
      • Department of Physics
      Matuyama, Ehime, Japan
  • 2007–2008
    • Kobe College
      Kōbe, Hyōgo, Japan
    • High Energy Accelerator Research Organization
      Tsukuba, Ibaraki, Japan
    • Center of Molecular Immunology
      La Habana, La Habana, Cuba
  • 2005–2008
    • National Institute of Advanced Industrial Science and Technology
      • Electronics and Photonics Research Institute
      Tsukuba, Ibaraki, Japan
  • 2004–2005
    • Waseda University
      • • Graduate School of Science and Engineering
      • • Department of Applied Chemistry
      Edo, Tōkyō, Japan
  • 2002
    • Kumamoto University
      Kumamoto, Kumamoto, Japan
    • Yokohama National University
      • Department of Mechanical Engineering and Material Science
      Yokohama, Kanagawa, Japan
  • 1993–2001
    • Tokyo Medical and Dental University
      • • Department of Pulmonary Medicine
      • • Department of Biochemical Genetics
      • • Department of Internal Medicine
      Edo, Tokyo, Japan
    • Juntendo University
      • Department of Neurology
      Tokyo, Tokyo-to, Japan
  • 1991–2000
    • Asahi General Hospital
      Asahi, Chiba, Japan
    • Japan Red Cross Fukuoka Hospital
      Hukuoka, Fukuoka, Japan
    • Tokyo Metropolitan Hiroo Hospital
      • Department of Pathology
      Edo, Tōkyō, Japan
  • 1992–1999
    • National Institute for Basic Biology
      Okazaki, Aichi, Japan
    • Yamaguchi University
      Yamaguti, Yamaguchi, Japan
  • 1991–1999
    • Nagoya University
      • • Department of Energy Engineering and Science
      • • Division of Biological Chemistry
      Nagoya-shi, Aichi-ken, Japan
  • 1991–1996
    • Kanazawa University
      • • Cancer Research Institute
      • • School of Medicine
      Kanazawa, Ishikawa, Japan
  • 1990–1995
    • Osaka Medical College
      • • Second Department of Internal Medicine
      • • First Department of Internal Medicine
      Takatuki, Ōsaka, Japan
    • Hirosaki University
      • School of Medicine
      Khirosaki, Aomori, Japan
  • 1983–1995
    • Niigata University
      • Division of Neuropathology
      Niahi-niigata, Niigata, Japan
  • 1990–1992
    • Shinshu University
      Shonai, Nagano, Japan
  • 1989–1990
    • Toyama Medical and Pharmaceutical University
      Тояма, Toyama, Japan