M. Yoshida
A5018428621- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Superconducting Materials and Applications
- Dark Matter and Cosmic Phenomena
- Photochromic and Fluorescence Chemistry
- Optical Network Technologies
- Concrete Corrosion and Durability
- Synthesis and properties of polymers
- Wood Treatment and Properties
- Non-Destructive Testing Techniques
- Crystallography and molecular interactions
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Laser Technologies
- Particle Detector Development and Performance
- Plant Surface Properties and Treatments
- Sugarcane Cultivation and Processing
- Dyeing and Modifying Textile Fibers
- Plant-based Medicinal Research
- Cardiac Arrhythmias and Treatments
- Quantum Chromodynamics and Particle Interactions
Osaka University
2004-2023
Kaneka (United States)
2023
YKK (Japan)
2023
Nagoya City University
2019-2022
Central Research Institute
2014
High Energy Accelerator Research Organization
2003-2013
Shimane University
2011-2013
Tohoku University
2007-2012
Duke University
2008
Toyo University
2006-2008
We present an analysis of atmospheric neutrino data from a 33.0 kton yr (535-day) exposure the Super-Kamiokande detector. The exhibit zenith angle dependent deficit muon neutrinos which is inconsistent with expectations based on calculations flux. Experimental biases and uncertainties in prediction fluxes cross sections are unable to explain our observation. consistent, however, two-flavor...
The first results of the solar neutrino flux measurement from Super-Kamiokande are presented. shown here obtained data taken between 31 May 1996, and 23 June 1997. Using our recoil electrons with energies above 6.5 MeV, we infer total ${}^{8}\mathrm{B}$ neutrinos to be $2.42\ifmmode\pm\else\textpm\fi{}0.06(\mathrm{stat}{)}_{\ensuremath{-}0.07}^{+0.10}(\mathrm{syst})\ifmmode\times\else\texttimes\fi{}{10}^{6}\mathrm{cm}{}^{\ensuremath{-}2}{\mathrm{s}}^{\ensuremath{-}1}$. This result is...
We report the result of a search for neutrino oscillations using precise measurements recoil electron energy spectrum and zenith angle variations solar flux from 1258 days neutrino-electron scattering data in Super-Kamiokande. The absence significant variation distortion places strong constraints on mixing mass difference flux-independent way. Using Super-Kamiokande measurement addition, two allowed regions at large are found.Received 19 March...
A measurement of the energy spectrum recoil electrons from solar neutrino scattering in Super-Kamiokande detector is presented. The results shown here were obtained 504 days data taken between 31 May 1996 and 25 March 1998. shape measured compared with expectation for ${}^{8}\mathrm{B}$ neutrinos. comparison takes into account both kinematic related effects process. spectral observation gives a ${\ensuremath{\chi}}^{2}$ 25.3 15 degrees freedom, corresponding to $4.6%$ confidence level.
Evidence of massive neutrinos in the ${\ensuremath{\pi}}^{+}\ensuremath{\rightarrow}{e}^{+}\ensuremath{\nu}$ decay spectrum was sought with background ${\ensuremath{\pi}}^{+}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}\ensuremath{\rightarrow}{e}^{+}$ chain highly suppressed. Upper limits (90% C.L.) on neutrino mixing matrix element $|{U}_{ei}{|}^{2}$ mass region $60--129\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ were set at level ${10}^{\ensuremath{-}8}$.
The east-west anisotropy, caused by the deflection of primary cosmic rays in Earth's magnetic field, is observed for first time flux atmospheric neutrinos. Using a 45 kt yr exposure Super-Kamiokande detector, 552 $e$-like and 633 $\ensuremath{\mu}$-like horizontally going events are selected momentum range between 400 $3000\mathrm{MeV}/c$. azimuthal distributions agree with expectation from neutrino calculations, verifying that neutrinos GeV energy reasonably well modeled calculations...
A search for the dinucleon decay $pp\ensuremath{\rightarrow}{K}^{+}{K}^{+}$ has been performed using $91.6\text{ }\text{ }\mathrm{kton}\ifmmode\cdot\else\textperiodcentered\fi{}\text{yr}$ data from Super-Kamiokande-I. This provides a sensitive probe of $R$-parity-violating parameter ${{\ensuremath{\lambda}}_{112}}^{\ensuremath{'}\ensuremath{'}}$. boosted decision tree analysis found no signal candidates in data. The expected background was $0.28\ifmmode\pm\else\textpm\fi{}0.19$ atmospheric...
We report the development of a proton identification method for Super-Kamiokande (SK) detector. This new tool is applied to search events with single track, high purity neutral current sample interest sterile neutrino searches. After selection using neural network, we observe 38 in combined SK-I and SK-II data corresponding 22 85.1 days exposure, an estimated signal-to-background ratio 1.6 1. Proton was also direct charged-current quasielastic (CCQE) events, obtaining precision fully...
Through laboratory experiments of oil-in-water emulsification, we show that can construct a high-shear-rate mixer (precession mixer) by using the precession cylindrical container without any mixing blades. For mixing, with larger diameter and its faster spin are preferable so wall velocity becomes large enough. Then, emulsification is most efficient when set Poincaré number Po=Ωp/Ωs, which ratio rotation speeds, about 0.2–0.3. When Po smaller than these values, shear rates in get much lower,...
A 1 Gsymbol/s, 64 QAM coherent signal was successfully transmitted over 150 k m using heterodyne detection with a frequency-stabilized fiber laser and an optical phase-locked-loop technique. The spectral efficiency reached as high 3 bit/s/Hz.
Processed aconite root (PA), the tuberous of Aconitum carmichaelii prepared by autoclaving, is a crude drug used in Japanese traditional Kampo medicine and Chinese for symptoms kidney deficiency, that related to muscle atrophy modern medicine. The objective present study evaluate effectiveness PA on find its active ingredients using dexamethasone-induced ring finger protein-1 (MuRF1) mRNA expression murine myoblast C2C12 cells. Dexamethasone-induced MuRF1 was significantly suppressed...
Readout electronics for the scintillation bar tracking detector (SciBar) in K2K neutrino oscillation experiment has been developed. SciBar 14 336 scintillator bars total. The deposited energy and timing of particles from interactions are measured by 64-channel multianode photo-multiplier tubes (MAPMTs). Compact custom-designed to record MAPMT signals were developed, consisting front-end circuit boards attached each back-end modules sitting a VME crate. board multiplexes pulse-height...
We demonstrate a 400-Gbit/s frequency-division-multiplexed and polarization- multiplexed OFDM transmission over 400 km (5×80 SSMF) with 256 QAM subcarrier modulation using an optical PLL. A record spectral efficiency of 14 bit/s/Hz was successfully achieved.
金属材料の弾性的性質や強度の把握を目的として開発された試験機の中に, スイス製のエコーチップ硬さ試験機がある. 本試験機の特徴としては, 対象とする供試体が小さくて済むことや, 試験時間が短時間であること, 小型で軽量であることから携帯性に優れていること, などが挙げられる. よって, 本試験機を実際の岩盤構造物や複雑な形状をした石造文化遺産に対して用いれば, 計測方向に関係なく迅速な作業が現場で可能になるものと期待される.本試験機を用いた岩質材料の物性評価手法を新たに開発するために, 本論文ではとくに, (1) 試験条件が与える影響調査 (岩石の寸法・形状や表面粗度などに関する検討), (2) 新鮮な岩石を用いた基本特性調査 (物理・力学特性との相関などに関する検討) の2項目に関して実施した結果を報告する.
ABSTRACT A reddish‐brown fluoroalkyl end‐capped 2‐acrylamido‐2‐methylpropanesulfonic acid (AMPS) oligomer/acetone composite was prepared by heating the white oligomer powder with acetone at 80 °C for 3 h. The color not observed in corresponding non‐fluorinated AMPS composite, which under similar conditions. coloring probably caused formation of polyaldol condensation products fluorinated oligomeric gel network cores. colored R F ‐(AMPS) n ‐R /acetone powders were stable and did exhibit any...
We perform a search for neutrinos coincident with GRB 080319B, the brightest observed to date, in +/- 1,000 s window. No statistically significant coincidences were and we thereby obtain an upper limit on fluence of neutrino-induced muons from this source. From apply reasonable assumptions derive neutrino GRB.
Abstract The activation energies for the racemization of optically active diaryl selenoxides were estimated by use 77Se NMR spectra diastereomeric selenoxides.
Summary The tangential strain on the inner bark of Cryptomeria japonica saplings grown in a growth chamber was continuously measured using gauges. Compression wood formation induced by artificial inclination. diurnal changes during light/dark cycles differed from those observed field. total increased daily, increasing incrementally dark periods and decreasing light, as In chamber, however, steep increases rapid decreases were found immediately following lights-off lights-on. inclined...