M. Fujioka

ORCID: 0000-0002-5829-6591
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Research Areas
  • Iron-based superconductors research
  • Nuclear Physics and Applications
  • Nuclear physics research studies
  • Particle accelerators and beam dynamics
  • Rare-earth and actinide compounds
  • Corporate Taxation and Avoidance
  • Atomic and Molecular Physics
  • Physics of Superconductivity and Magnetism
  • Amino Acid Enzymes and Metabolism
  • X-ray Spectroscopy and Fluorescence Analysis
  • Atomic and Subatomic Physics Research
  • Biochemical and Molecular Research
  • X-ray Diffraction in Crystallography
  • Mass Spectrometry Techniques and Applications
  • Plasma Diagnostics and Applications
  • Nuclear reactor physics and engineering
  • Neutrino Physics Research
  • Crystallization and Solubility Studies
  • Enzyme Structure and Function
  • Advanced Chemical Physics Studies
  • Superconducting Materials and Applications
  • Solid-state spectroscopy and crystallography
  • Magnetic properties of thin films
  • Particle Accelerators and Free-Electron Lasers
  • Quantum, superfluid, helium dynamics

National Institute of Advanced Industrial Science and Technology
2016-2025

Hokkaido University
2016-2025

Royal Incorporation of Architects in Scotland
2017-2018

Nippon Steel (Japan)
2004-2017

National Institute for Materials Science
2012-2016

University of Tsukuba
2016

Ehime University
2016

The University of Tokyo
1988-2016

Aoyama Gakuin University
2016

Hokkaido University of Science
2015

We have successfully synthesized the new BiS2-based superconductor NdOBiS2 by F doping. This compound is composed of superconducting BiS2 layers and blocking NdO layers, which indicates that layer analogous to CuO2 in cuprates or Fe–As Fe-based superconductors. can obtain NdO1-xFxBiS2 with bulk superconductivity a solid-state reaction. Therefore, should be suitable material for elucidating mechanism layer.

10.7566/jpsj.82.033708 article EN Journal of the Physical Society of Japan 2013-03-02

Abstract A basic protein having chemotactic activity for neutrophils is secreted by the rat kidney epithelioid cell line NRK-52E in response to interleukin-1 beta (Watanabe, K., Kinoshita, S., and Nakagawa, H. (1989) Biochem. Biophys. Res. Commun. 161, 1093-1099). The protein, which referred as cytokine-induced neutrophil chemoattractant (CINC), has been shown be a dimer of identical subunits; complete amino acid sequence subunit established. Sequence determination achieved automated Edman...

10.1016/s0021-9258(19)47149-4 article EN cc-by Journal of Biological Chemistry 1989-11-01

Novel BiS2-based superconductors LaO1-xFxBiS2 prepared by the high pressure synthesis technique were systematically studied. It was found that annealing strongly lattice as compared to samples conventional solid state reaction at ambient pressure. Bulk superconductivity observed within a wide F-concentration range of x = 0.2 ~ 0.7. On basis those results, we have established phase diagram LaO1-xFxBiS2.

10.1209/0295-5075/101/17004 article EN EPL (Europhysics Letters) 2013-01-01

The suppression of the Jahn–Teller distortion elevates oxygen evolution reaction activity for Mn<sub>3−x</sub>Co<sub>x</sub>O<sub>4</sub> (0 ≤ <italic>x</italic> &lt; 1).

10.1039/c5ra22873e article EN RSC Advances 2015-12-22

The phase diagram of SmFeAsO1−xFx in terms x is exhibited this study. Specimens from = 0 to 0.3 were prepared by low-temperature sintering with slow cooling. suppresses the formation amorphous FeAs, which inevitably produced as an impurity when using high-temperature sintering. Moreover, cooling effective obtaining a high fluorine concentration. compositional change feedstock composition quite small after synthesis. We can reproducibly observe record superconducting transition for iron-based...

10.1088/0953-2048/26/8/085023 article EN Superconductor Science and Technology 2013-07-11

Four basic neutrophil chemotactic factors (chemokines) have been purified from conditioned medium of granulation tissue obtained carrageenin-induced inflammation in the rat. On basis their N-terminal amino acid sequences, one chemokines was identical with rat GRO/cytokine-induced chemoattractant (CINC) which we reported previously, and another macrophage inflammatory protein-2 (MIP-2). Two other were novel chemoattractants related to MIP-2. The are referred as GRO/CINC-2 alpha CINC-2 beta,...

10.1042/bj3010545 article EN Biochemical Journal 1994-07-15

S-Adenosylhomocysteine hydrolase (EC 3.3.1.1)from rat liver was purified to homogeneity.The enzyme had a molecular weight of 188,000 and composed 4 subunits with 47,000.The isoelectric pH the at 5.7.The K, values for S-adenosyl-L-homocysteine, adenosine, DL-homocysteine were 15.2 p ~, 1.06 pM, 155 respectively, 7.2 25°C.The showed fluorescence an emission maximum 350 n m when excited 280 nm."he protein partially quenched on addition adenosine.The quenching as function adenosine concentration...

10.1016/s0021-9258(19)69853-4 article EN cc-by Journal of Biological Chemistry 1981-02-01

Glycine N-methyltransferase (EC 2.1.1.20)has been purified to homogeneity from rat liver.The enzyme has a molecular weight of 132,000 by sedimentation equilibrium method.This value is in good agreement with 130,000 obtained Sephadex G-150 chromatography.The the denatured as determined polyacrylamide gel electrophoresis presence sodium dodecyl sulfate 31,500.The numbers peptides tryptic digestion and cyanogen bromide cleavage are one-fourth those expected contents lysine plus arginine...

10.1016/s0021-9258(18)34798-7 article EN cc-by Journal of Biological Chemistry 1982-04-01

Due to the spontaneous transport of small-sized cations and redox reactions under open circuit conditions, currently reported coloring electrochromic devices (ECDs) may self-bleach easily. The resulting ECDs exhibit poor open-circuit memory, which limits their applications in static display advertisement. By constructing energy barriers effectively control cation transport, reaction could be suppressed, thereby inhibiting self-bleaching ECDs. In this study, phosphate glass is used as an...

10.1021/acsami.3c18626 article EN ACS Applied Materials & Interfaces 2024-04-04

Protonic ceramic fuel cells (PCFCs) should exhibit high performance at intermediate temperatures in the range of 400–600 °C. To reduce operating temperature, more active air electrodes (positrodes) are needed. In present work, BaCo0.4Fe0.4Mg0.1Y0.1O3-δ (BCFMY) is investigated as a positrode material for application PCFCs well solid oxide (SOFCs). For SOFCs, polarization resistance ascribed to oxygen reduction reaction proportional pO2−1/4 (pO2: partial pressure), suggesting that...

10.1038/s42004-025-01468-4 article EN cc-by-nc-nd Communications Chemistry 2025-03-08

10.1016/0168-583x(92)95935-k article EN Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms 1992-08-01

We show the observation of coexistence bulk superconductivity and magnetic ordering in CeO1−xFxBiS2 (x = 0–1.0) prepared by annealing under high pressure. In system, both two types ferromagnetic-like with transition temperatures 4.5 7.5 K are induced upon systematic F substitution. This fact suggests that carriers generated substitution O supplied to not only BiS2 superconducting layers but also CeO blocking layers. Furthermore, highest temperature is observed when increases, which implies...

10.7566/jpsj.84.024709 article EN Journal of the Physical Society of Japan 2015-01-13

Single crystals of La(O,F)BiSSe were grown by using a CsCl flux method. crystal X-ray structural analysis reveals that the structure is isostructural to BiS2- or BiSe2-based compounds crystallizing with space group P4/nmm (lattice parameters = 4.1110(2) Å, c 13.6010(7) Å). However, S atoms are selectively occupied at apical site Bi-SSe pyramids in superconducting layer. The single show transition around 4.2 K magnetic susceptibility and resistivity measurements. anisotropic parameter...

10.1063/1.4915302 article EN Applied Physics Letters 2015-03-16

Abstract We identified a new homozygous missense mutation His373-->Leu in the CYP17 gene of two sisters with 17 alpha-hydroxylase deficiency an elevated plasma aldosterone concentration by sequencing their genomic DNAs amplified polymerase chain reaction. Using reaction-based site-directed mutagenesis, we prepared DNA that encoded Leu373 mutant protein. COS-1 cells transfected DNA, despite having RNA hybridizable to P450c17 cDNA, did not show and 17,20-lyase activities. Also, were devoid 11...

10.1016/s0021-9258(19)74462-7 article EN cc-by Journal of Biological Chemistry 1993-12-01

Rat liver cDNA libraries constructed in lambda gt11 were screened for reactivity with polyclonal antibodies to native S-adenosyl-L-homocysteine (AdoHcy) hydrolase (adenosylhomocysteinase; EC 3.3.1.1). Five clones isolated and sequenced. The amino acid sequence, deduced from the contained sequence of eight peptides obtained by tryptic cyanogen bromide fragmentation rat AdoHcy hydrolase. Identification amino- carboxyl-terminal showed that complete was obtained. A "fingerprint" found is...

10.1073/pnas.84.3.719 article EN public-domain Proceedings of the National Academy of Sciences 1987-02-01

We demonstrate the fabrication of superconducting SmFeAsO1-xFx (Sm-1111) wires by using ex-situ powder-in-tube technique. Sm-1111 powder and a binder composed SmF3, samarium arsenide, iron arsenide were used to synthesize core. Although F content is reduced in process fabrication, compensates sufficiently supplementing content, thereby preventing decrease transition temperature shrinkage volume fraction. Thus, wire with binder, transport critical current density reaches highest value ~4...

10.1143/apex.4.063102 article EN other-oa Applied Physics Express 2011-05-31
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