A5065151803- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Multiple Sclerosis Research Studies
- High-Energy Particle Collisions Research
- Crystallization and Solubility Studies
- Rare-earth and actinide compounds
- Iron-based superconductors research
- X-ray Diffraction in Crystallography
- Peripheral Neuropathies and Disorders
- Astrophysics and Cosmic Phenomena
- Inorganic Chemistry and Materials
- Nuclear physics research studies
- Magnetic and transport properties of perovskites and related materials
- Dark Matter and Cosmic Phenomena
- Crystal Structures and Properties
- Magnetic Properties of Alloys
- Advanced Condensed Matter Physics
- Physics of Superconductivity and Magnetism
- Magnetic properties of thin films
- CNS Lymphoma Diagnosis and Treatment
- Solar and Space Plasma Dynamics
- Crystallography and molecular interactions
- Astronomy and Astrophysical Research
- Control and Stability of Dynamical Systems
- Heusler alloys: electronic and magnetic properties
Tohoku University
2014-2025
Kyoto University
2015-2024
Fukushima Medical University
2024
University of Toyama
2020-2023
Tohoku University Hospital
2023
National Institute of Advanced Industrial Science and Technology
2015-2019
Southern Tohoku General Hospital
2016-2018
Vaughn College of Aeronautics and Technology
2016
Osaka University
2009-2015
Nagoya University
2009-2012
We present a Raman study on the phase transitions of organic/inorganic hybrid perovskite materials, CH3NH3PbX3 (X = I, Br), which are used as solar cells with high power conversion efficiency. The temperature dependence bands Br) was measured in ranges 290 to 100 K for CH3NH3PbBr3 and 340 110 CH3NH3PbI3. Broad ν1 at ~326 cm−1 MAPbBr3 ~240 MAPbI3 were assigned MA–PbX3 cage vibrations. These exhibited anomalous dependence, attributable motional narrowing originating from fast changes between...
Abstract Aquaporin 4 (AQP4)-IgG-positive neuromyelitis optica spectrum disorder (AQP4-IgG+NMOSD) is an autoimmune astrocytopathic disease pathologically characterized by the massive destruction and regeneration of astrocytes with diverse types tissue injury or without complement deposition. However, it unknown whether this diversity derived from differences in pathological processes temporal changes. Furthermore, unlike for demyelinating lesions multiple sclerosis, there has been no staging...
The spectrum of MOG-IgG-associated disease (MOGAD) includes optic neuritis (ON), myelitis (MY), acute disseminated encephalomyelitis (ADEM), brainstem encephalitis, cerebral cortical encephalitis (CE) and AQP4-IgG-negative neuromyelitis optica disorder (NMOSD). In MOGAD, MOG-IgG are usually detected in sera (MOG-IgGSERUM), but there have been some seronegative MOGAD cases with CSF (MOG-IgGCSF), its diagnostic implications remains unclear. this cross-sectional study, we identified patients...
Myelin oligodendrocyte glycoprotein (MOG) antibody-associated disorder (MOGAD) is a newly identified autoimmune demyelinating that often associated with acute disseminated encephalomyelitis and usually occurs postinfection or postvaccination. Here we report case of MOGAD after mRNA severe respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination. A previously healthy 68-year-old woman presented to our department gradually worsening numbness on the right side her face, which began 14 days...
The differential cross sections of the Σ^{-}p→Λn reaction were measured accurately for Σ^{-} momentum (p_{Σ}) ranging from 470 to 650 MeV/c at J-PARC Hadron Experimental Facility. Precise angular information about was obtained first time by detecting approximately 100 events each step Δcosθ=0.1. show a slightly forward-peaking structure in regions. integrated -0.7≤cosθ≤1.0 as 22.5±0.68 [statistical error(stat.)] ±0.65 [systematic error(syst.)] mb and 15.8±0.83(stat)±0.52(syst)...
In myelin oligodendrocyte glycoprotein IgG-associated disease (MOGAD) and aquaporin-4 IgG+ neuromyelitis optica spectrum disorder (AQP4+NMOSD), the autoantibodies are mainly composed of IgG1, complement-dependent cytotoxicity is a primary pathomechanism in AQP4+NMOSD. We aimed to evaluate CSF complement activation MOGAD.
We have observed a “|$K^{-}pp$|”-like structure in the |$d(\pi ^{+ },K^{+ })$| reaction at 1.69 GeV|$/c$|. In this reaction, |$\Lambda (1405)$| hyperon resonance is expected to be produced as doorway form |$K^{-}pp$| through ^{\ast }p\rightarrow K^{-}pp$| process. However, most of would escape from deuteron without secondary reactions. Therefore, coincidence high-momentum (|$>$|250 MeV|$/c$|) proton(s) large emission angles (|$39^\circ \lt \theta _{\rm lab.} 122^\circ$|) was requested...
We have carried out an experiment to search for a neutron-rich hypernucleus, $^6_{\Lambda}$H, by the $^6$Li($\pi^-,K^+$) reaction at $p_{\pi^-}$ =1.2 GeV/$c$. The obtained missing mass spectrum with estimated energy resolution of 3.2 MeV (FWHM) showed no peak structure corresponding $^6_{\Lambda}$H hypernucleus neither below nor above $^4_{\Lambda}$H$+2n$ particle decay threshold. An upper limit production cross section bound was be 1.2 nb/sr 90% confidence level.
A high statistics $\mathrm{\ensuremath{\Sigma}}p$ scattering experiment is performed at the J-PARC Hadron Experimental Facility. Momentum-tagged ${\mathrm{\ensuremath{\Sigma}}}^{\ensuremath{-}}\mathrm{s}$ running in a liquid hydrogen target are accumulated by detecting ${\ensuremath{\pi}}^{\ensuremath{-}}p\ensuremath{\rightarrow}{K}^{+}{\mathrm{\ensuremath{\Sigma}}}^{\ensuremath{-}}$ reaction with intensity ${\ensuremath{\pi}}^{\ensuremath{-}}$ beam of 20 M/spill. The differential cross...
Co/Ni multilayers with a stack of Ta (2 nm)/[Co ( <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">t</i> <sub xmlns:xlink="http://www.w3.org/1999/xlink">Co</sub> )/Ni xmlns:xlink="http://www.w3.org/1999/xlink">Ni</sub> )] xmlns:xlink="http://www.w3.org/1999/xlink">N</i> /Ta (30 nm) were prepared by dc magnetron sputtering, and their magnetization dynamics measured time-resolved magneto-optical Kerr effect (TRMOKE). The total thickness the...
Gilbert damping constants α of Co/Pd multilayers with various layered structures were estimated by time resolved magneto-optical Kerr effect. The [Co( <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">t</i> <sub xmlns:xlink="http://www.w3.org/1999/xlink">Co</sub> )/Pd( xmlns:xlink="http://www.w3.org/1999/xlink">Pd</sub> )] xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> exhibiting a perpendicular magnetic anisotropy (PMA) prepared dc magnetron...
To clarify T-cell responses in myelin oligodendrocyte glycoprotein (MOG) antibody-associated disease (MOGAD), we cultured the peripheral blood mononuclear cells of 24 patients with MOGAD and 20 aquaporin-4 (AQP4) antibody-positive neuromyelitis optica spectrum disorders (NMOSD), those 17 healthy controls (HCs), presence fourteen MOG peptides covering full-length MOG, five AQP4 peptides, two basic protein or proteolipid peptides. Then, measured activation markers, such as cell surface CD69...
Abstract Square‐planar coordinate Ni 2+ ions in oxides are exclusively limited to a low‐spin state (S=0) owing extensive crystal field splitting. Layered oxychalcogenides A 2 II O Ag Se (A=Sr, Ba) with the S=1 NiO square lattice now reported. The structural analysis revealed that ion is under‐bonded by significant tensile strain from neighboring layers, leading reduction Ba exhibits G‐type spin order at 130 K, indicating fairly strong in‐plane interactions. high‐pressure synthesis employed...
Root resection of extracted human teeth was performed using the erbium:YAG (Er:YAG) and holmium:YAG (Ho:YAG) laser to investigate clinical application lasers on hard tissue. The CO2 mechanical drill were also used for comparison. After these technologies, morphological changes cut surface investigated by optical scanning electron microscope. Er:YAG irradiation produced smooth, clean resected surfaces without signs thermal damages. Complete obturation root canal maintained after irradiation....
A series of halogenated compounds, (E,E,E)-1,6-di(4-X-phenyl)hexa-1,3,5-trienes (1: X = F, 2: Cl, 3: Br, 4: I), were synthesized and their crystal structures fluorescence emission properties systematically investigated. Single-crystal X-ray analysis reveals that molecules are arranged via X/X halogen bonds and/or CH/X-type hydrogen to form a herringbone structure in 1 π-stacked 2–4. In the 2 3, which almost isomorphous, distance displacement for nearest stacking smaller than those 4....
For two adjacent buildings connected by a joint damper, an inverse problem is formulated based on the pole allocation method in control theory. The structural system simplified as two-degrees-of-freedom (2-DOF) lumped-mass damped shear model. unified governing equation, which expresses relationship between assigned target and parameters for earthquake-resistant building, seismically isolated or passively controlled extended to using damper. introduced equation automatically constrains...
The pentaquark $\Theta^+$ has been searched for via the $\pi^-p \to K^-X$ reaction with beam momenta of 1.92 and 2.01 GeV/$c$ at J-PARC. A missing mass resolution 2 MeV (FWHM) was achieved but no sharp peak structure observed. upper limits on production cross section averaged over scattering angle from 2$^{\circ}$ to 15$^{\circ}$ in laboratory frame were found be less than 0.28 $\mu$b/sr 90\% confidence level both 1.92- 2.01-GeV/$c$ data. systematic uncertainty controlled within 10\%....
Studies on magnetic oxyhydrides have been almost limited to perovskite-based lattices with corner-sharing octahedra a M–H–M (M: transition metal) angle of θ ∼ 180°. Using high-pressure method, we prepared BaCrO2H 6H-type hexagonal perovskite structure corner- and face-sharing octahedra, offering unique opportunity investigate interactions based 90° case. Neutron diffraction for revealed an antiferromagnetic (AFM) order at TN 375 K, which is higher than ∼240 K in BaCrO3–xFx. The relatively...
Conventional rodent neuromyelitis optica spectrum disorder (NMOSD) models using patient-derived immunoglobulin G (IgG) are potentially affected by the differences between human and aquaporin-4 (AQP4) extracellular domains (ECDs). We hypothesized that humanization of AQP4 ECDs would make model lesions closer to NMOSD pathology. Humanized-AQP4-expressing (hAQP4) rats were generated genome-editing technology, AQP4-specific monoclonal antibody (mAb) or six IgGs introduced intraperitoneally into...
A diamond spin chain system, one of the one-dimensional frustrated lattices, is known to exhibit novel properties, but experimental studies have been exclusively confined materials with a single component. Here, we report on synthesis, structure, and magnetic properties new compound Cu2FePO4F4(H2O)4 1 composed mixed-spins Cu2+ (S = 1/2 × 2) Fe3+ 5/2). Compound crystallizes in space group C2/c monoclinic crystal system 7.7546(4) Å, b 12.1290(6) c 9.9209(6) β 105.29(1)°, Z 4. DC magnetization,...
Abstract Myelin oligodendrocyte glycoprotein ( MOG ) is localized at the outermost layer of myelin sheath and accessible for autoantibodies. Although experimental autoimmune encephalitis induced with immunization has been studied 30 years, results previous reports on immunoglobulin G (IgG) detection enzyme‐linked immunosorbent assay Western blot are confusing. However, after development human ‐transfected cell‐based to detect conformational‐sensitive ‐IgG, unique groups patients have found...
Using a high-pressure synthesis method, we prepared the layered oxychalcogenide Ba2CoO2Ag2Te2 (space group: I4/mmm) with alternating stacks of CoO2 and Ag2Te2 layers, separated by Ba atoms. The plane is greatly extended (Co–O = 2.19 Å on average) due to tensile strain from adjacent causing displacement oxide anions. Layered cobaltates trans-CoO4X2 (X chalcogen, halogen) coordination feature large spin–orbit coupling, which linearly scaled tetrahedral factor dCo–X/dCo–O. However, applying...
X-ray absorption (XAS) and its magnetic circular dichroism (XMCD) were measured at the Ce ${M}_{4,5}$ edges of ferromagnetic CeRu${}_{2}$Ge${}_{2}$ paramagnetic CeRu${}_{2}$Si${}_{2}$: both compounds are considered to be located near boundary delocalization 4$f$ electrons. While XAS line shape varies clearly reflecting variation in delocalization, line-shape XMCD is hardly discernible under various conditions temperature field. The can explained as effects variations $4f$ occupation number...