S. Noguchi
A5102900335- Rare-earth and actinide compounds
- Physics of Superconductivity and Magnetism
- Particle physics theoretical and experimental studies
- Magnetic and transport properties of perovskites and related materials
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Iron-based superconductors research
- Organic and Molecular Conductors Research
- Advanced Condensed Matter Physics
- Magnetism in coordination complexes
- Magnetic Properties of Alloys
- Superconducting Materials and Applications
- Perovskite Materials and Applications
- Solid-state spectroscopy and crystallography
- High-pressure geophysics and materials
- Superconductivity in MgB2 and Alloys
- Hepatitis C virus research
- Inorganic Chemistry and Materials
- Magnetic Properties and Applications
- Magnetic properties of thin films
- Semiconductor materials and interfaces
- Theoretical and Computational Physics
- Liver Disease Diagnosis and Treatment
- Surface and Thin Film Phenomena
- Particle Accelerators and Free-Electron Lasers
Tokyo Metropolitan University
2005-2023
Osaka Metropolitan University
2023
Yokohama National University
2022
Osaka Prefecture University
2006-2020
Nara Institute of Science and Technology
2012-2013
Nara Women's University
1990-2009
Centre National de la Recherche Scientifique
2008
Japan Science and Technology Agency
2003-2008
Laboratoire de Chimie de Coordination
2008
Tokyo Institute of Technology
2007
The cross section for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}\ensuremath{\psi}(2S)$ between threshold and $\sqrt{s}=5.5\text{ }\text{ }\mathrm{GeV}$ is measured using $673\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data on off the $\ensuremath{\Upsilon}(4S)$ resonance collected with Belle detector at KEKB. Two resonant structures are observed in...
We report a measurement of the exclusive e+ e- -->Lambda+_(c)Lambda-_(c) cross section as function center-of-mass energy near Lambda+_(c)Lambda-_(c) threshold. A clear peak with significance 8.2sigma is observed in invariant mass distribution just above With an assumption resonance origin for peak, and width M=[4634 (+8)_(-7)(stat)(+5)_(-8)(syst)] MeV/c(2) Gamma_(tot)=[92 (+40)_(-24)(stat)(+10)_(-21)(syst)] MeV are determined. The analysis based on study events initial-state-radiation...
We report a high-statistics measurement of the branching fraction for tau^- --> pi^- pi^0 nu_tau and invariant mass spectrum produced system using 72.2 fb^-1 data recorded with Belle detector at KEKB asymmetric-energy e^+ e^- collider. The obtained is (25.24 +/- 0.01 0.39)%, where first error statistical second systematic. unfolded used to determine resonance parameters rho(770), rho'(1450), rho"(1700) mesons. also use this estimate hadronic (2pi) contribution anomalous magnetic moment muon...
The state excited from the ground singlet of ${\mathrm{Co}}^{3+}$ in ${\mathrm{LaCoO}}_{3}$ was investigated by submillimeter-wave electron spin resonance (ESR) measurements. Clear ESR signals with zero-field splitting were observed above 20 K for first time. activation energy is estimated to be $\ensuremath{\Delta}\ensuremath{\approx}140\mathrm{K},$ temperature dependence signal intensity and resonance-width. frequency angular successfully analyzed an effective spin-Hamiltonian uniaxial...
A new aluminum nitride (AIN) substrate, which has high thermal conductivity of 160 W/mK at room temperture, been developed using the hot press sintering technique. The AIN substrate following excellent characteristics. 1) is eight times as that AI <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> O xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> temperature and almost equal to 99.5 percent BeO 150°C. 2) expansion coefficient smaller...
The phase diagram in the superconducting Bi 1.68 Pb v Sr x Ca Cu z O w ( =0.28, 0.32) system was investigated by means of X-ray diffraction and electrical resistivity for samples calcined air. results revealed that classified into four regions, a single 110 K-phase region, two types two-phase regions (110 K phase+Ca 2 CuO 3 phase+80 phase) three-phase region +80 phase). with T c about 106–108 exists fairly wide composition range, especially 0.32 1.75 y system, 1.75≦ ≦1.85 2.65≦ ≦2.85. This...
SUMMARY. The mortality rate from liver disease in H town of the Fukuoka prefecture Japan is significantly higher men than women. To clarify gender‐related difference, we evaluated subjects with hepatitis B virus (HBV) and C (HCV) infection S area this town. A total 824 adults participated study, 332 492 incidence positivity for surface antigen (HBsAg) serum did not differ between (1.9%) Japanese blood donors (1.5%); however, antibody to (HCVAb) (31.8%) greatly exceeded that (1.3%). HCVAb...
Electronic-specific-heat measurements have been made, in the liquid-helium temperature range, $\ensuremath{\alpha}$-phase fcc solid solutions of following systems based on Cu or Ag: Cu-Ni, Cu-Zn, Cu-Ga, Cu-Ge, Ag-Ga, Ag-Ge, and Ag-In. An initial increase electronic-specific-heat coefficient $\ensuremath{\gamma}$ has observed all alloying, electron-concentration derivatives density states at Fermi level, as indicated by value...
The reaction $\stackrel{-}{p}+\mathrm{Ta}\ensuremath{\rightarrow}{V}^{0}+X$ (${V}^{0}=\ensuremath{\Lambda}, \stackrel{-}{\ensuremath{\Lambda}}, or {K}_{s}^{0}$) at 4 GeV/c has been studied by comparing with the results in $\stackrel{-}{p}p$ interaction. Strong enhancement of $\ensuremath{\Lambda}$ production was observed, while $\stackrel{-}{\ensuremath{\Lambda}}$ is suppressed. $\frac{\stackrel{-}{\ensuremath{\Lambda}}}{\ensuremath{\Lambda}}$ ratio obtained as (2.0...
Sixty-two charm events have been observed in an exposure of the SLAC Hybrid Facility toa backward sacttered laser beam. Based on 22 neutral and 21 charged decays we measured charmed-meson lifetimes to be τD0=(6.8+2.3−1.8)×10−13 sec, τD±=(7.4+2.3−2.0)×10−13 sec their ratio τD±τD0=1.1+0.6−0.3. The inclusive cross section at a photon energy 20 GeV has 56+24−23 nb. Evidence is presented for non-D¯D component production, consistent with (35±20)% Λ+c production some D*± production. We found no...
The process e+e−→K+K−J/ψ is observed for the first time via initial-state radiation. cross section of center-of-mass energies between threshold and 6.0 GeV measured using 673 fb−1 data collected with Belle detector on off Υ(4S) resonance. No significant signal Y(4260)→K+K−J/ψ observed, we determine B(Y(4260)→K+K−J/ψ)Γ(Y(4260)→e+e−)<1.2 eV/c2 at a 90% confidence level. We also find evidence e+e−→K0SK0SJ/ψ in same sample.Received 17 September...
We report on the magnetic field $(H)$, hydrostatic pressure $(P)$, and doping dependence of order ferromagnetic (FM) to paramagnetic (PM) phase transition in ${\text{Sm}}_{0.52}{\text{Sr}}_{0.48}{\text{MnO}}_{3}$ single crystal. It has been shown that $({H}_{\text{cr}}\ensuremath{\approx}4\text{ }\text{T},\text{ }{T}_{\text{cr}}\ensuremath{\approx}160\text{ }\text{K})$ is a critical point below which FM PM first nature accompanied by sharp drop resistivity magnetization with thermal...
Sox is a family of SRY ‐related testis‐determining genes. We have isolated two different mRNA isoforms the frog Sox9 gene from adult testis cDNAs. One form ( α) encodes 482 amino acid protein containing HMG box, whereas other β), which completely lacks truncated 265 α. α 82% similar to mouse, 86% chicken, and 77% trout at level. expression was up‐regulated in embryos after stage 16, seen both developing testes ovaries. The size transcripts determined be 7.8 knt by Northern blot analysis. In...
Magnetic anisotropy of layered superconducting oxide Bi 2 Sr CaCu O 8+δ single crystal was investigated by torque measurements at 77 K. A hysteresis loop with a sharp cusp found for the magnetic fields below about 6 kOe close to ab -plane. It can be satisfactorily explained assuming that component diamagnetic moment perpendicular -plane is induced applied external field. In fact, field and angular dependence ruled well relation H cos θ= c P , where critical which flux-pinning decreases...
The 2:1 charge-transfer (CT) salts (12·FeBr4 and 12·GaBr4) of ethylenedithiotetrathiafulvalenoquinone-1,3-dithiolemethide (1) with FeBr4- GaBr4- counteranions were obtained as needle crystals, whose structures are almost the same each other. 1 molecules form a one dimensionally stacked column alternation their molecular axis direction, while aligned in parallel 1-stacked columns direction distorted-tetrahedral geometry maintained. room-temperature electrical conductivities measured on single...
We have used the Fermilab 30-in. bubble-chamber hybrid spectrometer to study multiparticle production in interactions of 200-GeV/c protons and π+ K+ mesons with nuclei gold, silver, magnesium. find that multiplicities produced particles negative increase linearly number projectile collisions, no beam or target dependence. The secondary collisions nucleus increases significantly less rapidly than has been reported by a streamer chamber experiment. properties suggest they arise from...
The 2:1 salt of a new donor molecule, EDT-DSDTFVSDS with FeBr4- ion, (EDT-DSDTFVSDS)2.FeBr4 showed an essentially metallic behavior despite small upturn in the electrical resistance below ca. 30 K (electrical conductivities at 290 and 4.2 are 200 170 S cm-1, respectively). Fe(III) d spins ions this were subject to antiferromagnetic ordering 3.3 by virtue strong pi-d interaction (Jpid) which is comparable that molecular conductor, lambda-(BETS)2.FeCl4, very weak d-d (Jdd). This was evidenced...
The crystal of a (ethylenedioxytetrathiafulvalenoquinone-1,3-diselenolemethide, 1)2·FeBr4·(1,2-dichloroethane, DCE)1/2 salt obtained by electrochemical oxidation 1 in DCE containing supporting electrolyte, NBu4·FeBr4, exhibits metallic conductivity down to 0.45 K. negative magnetoresistance the electrical resistance (ρ∥) conducting ab-plane suggests stronger interactions between d spins FeBr4- ions and π electrons than those FeCl4- corresponding 1,3-dithiolemethide donor molecule. order...
Using the previous Belle measurement of inclusive photon energy in B→Xsγ decays, we determine first and second moments this spectrum for minimum energies B meson rest frame ranging from 1.8 to 2.3 GeV. Combining these measurements with recent data on lepton hadronic mass B→Xcℓν perform fits theoretical expressions derived 1S kinetic schemes extract magnitude Cabibbo-Kobayashi-Maskawa matrix element Vcb, b-quark mass, other nonperturbative parameters. In scheme analysis find...
We have succeeded in growing a high-quality single crystal of UCu 2 Si with the tetragonal structure by Sn-flux method and measured electrical resistivity, magnetic susceptibility, magnetization specific heat. is found to order antiferromagnetically below T N =106 K, follows successive ferromagnetic ordering at C =100 K. The properties are highly anisotropic, reflecting structure. An easy-axis be [001] direction ( c -axis) both antiferromagnetic phases, while [100] corresponds hard-axis...