A5081626471- Particle Accelerators and Free-Electron Lasers
- Laser-Plasma Interactions and Diagnostics
- Advanced X-ray Imaging Techniques
- Particle accelerators and beam dynamics
- Laser-Matter Interactions and Applications
- Gyrotron and Vacuum Electronics Research
- Interconnection Networks and Systems
- Laser-induced spectroscopy and plasma
- Superconducting Materials and Applications
- Hand Gesture Recognition Systems
- Embedded Systems Design Techniques
- Evolutionary Algorithms and Applications
- Laser Design and Applications
- Human Pose and Action Recognition
- Integrated Circuits and Semiconductor Failure Analysis
- Manufacturing Process and Optimization
- Advancements in Photolithography Techniques
- Railway Systems and Energy Efficiency
- Photonic and Optical Devices
- Parallel Computing and Optimization Techniques
- Metaheuristic Optimization Algorithms Research
- VLSI and Analog Circuit Testing
- Crystallization and Solubility Studies
- Pulsed Power Technology Applications
- VLSI and FPGA Design Techniques
SPring-8
2013-2025
National Institutes for Quantum Science and Technology
2022-2025
Japan Synchrotron Radiation Research Institute
2015-2025
Shimada Municipal Hospital
2021-2025
The University of Tokyo
2002-2023
Gifu University
1999-2023
Juntendo University
2016-2023
Teikyo University
2023
Nihon University
2018-2023
Nagoya University
2012-2022
Low-frequency microwave brightness temperature is strongly affected by near-surface soil moisture; therefore, it can be assimilated into a land surface model to improve modeling of moisture and the energy budget. This study presents new variational system used assimilate AMSR-E vertical polarization 6.9 GHz 18.7 GHz. The consists (LSM) calculate fluxes moisture, radiative transfer (RTM) estimate temperature, an optimization scheme search for optimal values minimizing difference between...
We have demonstrated nonlinear cross-phase modulation in electro-optic crystals using intense, single-cycle terahertz (THz) radiation. Individual THz pulses, generated by coherent transition radiation emitted subpicosecond electron bunches, peak energies of up to 100 microJ per pulse. The time-dependent electric field the intense pulses induces through Pockels effect, leading spectral shifting, broadening, and copropagating laser pulses. observed THz-induced agrees well with a phase-shift model.
The 13th harmonic of a Ti:sapphire (Ti:S) laser in the plateau region was injected as seeding source to 250-MeV free-electron-laser (FEL) amplifier. When amplification conditions were fulfilled, strong enhancement radiation intensity by factor 650 observed. random and uncontrollable spikes, which appeared spectra Self-Amplified Spontaneous Emission (SASE) based FEL without source, found be suppressed drastically form narrow-band, single peak profile at 61.2 nm. properties seeded well...
Background: Lupus erythematosus (LE) is a multi-organ-system disease, the characteristics of which are reflected in 1982 American Rheumatism Association (ARA) criteria for systemic lupus (SLE). From dermatological point view, only presence LE-specific histopathology necessary and sufficient diagnosis LE. The association between type skin lesion severity extracutaneous manifestations LE has not yet been investigated systematically. Objective: aim this study was to evaluate, according lesions,...
Taxol (1) is a clinically used antineoplastic diterpenoid. The tetracyclic ring system comprises 6/8/6-membered carbocycle (ABC-ring) and fused oxetane (D-ring) embedded with bridgehead double bond decorated multiple oxygen functionalities. Here, we report convergent total synthesis of this exceedingly complex natural product. C-ring fragment was designed to possess bromocyclohexenone an extra tetrahydrofuran control the reactivity selectivity, as well minimize functional group manipulations...
NanoTerasu, a new 3 GeV synchrotron light source in Japan, began user operation April 2024. It provides high-brilliance soft to tender x-rays and covers wide spectral range from ultraviolet x-rays. Its compact storage ring with circumference of 349 m is based on four-bend achromat lattice provide two straight sections each cell for insertion devices natural horizontal emittance 1.14 nm rad, which small enough users. The NanoTerasu accelerator incorporates several innovative technologies,...
Spatial and energy distributions of energetic electrons produced by an ultrashort, intense laser pulse with a short focal length optical system (Ti:sapphire, 12 TW, 50 fs, $\ensuremath{\lambda}=790\mathrm{nm},$ $f/3.5)$ in He gas jet are measured. They shown to depend strongly on the contrast ratio shape prepulse. The wave breaking plasma waves at front shock formed proper prepulse is found make narrow-cone $(0.1\ensuremath{\pi}\mathrm{mm}$ mrad) electron injection. These further accelerated...
In this Letter we report the first experimental characterization of superradiance in a single-pass high-gain free-electron laser (FEL) seeded by 150 femtosecond (FWHM) Ti:sapphire laser. The nonlinear energy gain after an exponential regime was observed. We also measured evolution longitudinal phase space both and superradiant regimes. output FEL pulse duration to be as short 81 fs, roughly 50% reduction compared input seed temporal distribution radiation predicted numerical simulation...
This paper proposes a novel concept for network communication media, called "connectedness oriented communication". While traditional technologies focus on how to precisely transmit the contents of messages, communication" is intended support and augment social relationships among people by fostering sense connectedness them. aims at achieving this exchanging status presence information these people. In paper, model design methodologies are presented. addition, example systems that we have...
Click to increase image sizeClick decrease size AcknowledgmentsThis article is presented on behalf of all SPring-8 members working for SPring-8-II. The figures were provided by Koichi Soutome.Additional informationFundingThe design and development works are supported RIKEN center (RSC), RIKEN. 3 GeV light source in this have been conducted under the NanoTerasu project cohosted QST PhoSIC.
To investigate the prevalence of anti-alphafodrin antibody in patients with Sjogren syndrome (SS), lupus erythematosus (LE), or both and association this other clinical manifestations.A study screening diagnostic tests. Mean follow-up was 152 months (range, 4-572 months).A university hospital associated a research laboratory Tokyo, Japan.Nine primary SS, 15 SS secondary to LE, 44 LE alone.Frequencies findings, including anti-alpha-fodrin antibody.Anti-alpha-fodrin more commonly detected...
This paper proposes a simple PWM scheme which alleviates the neutral point voltage fluctuation problem of three level inverter applications. The new employs modified version well known multi-level sinusoidal pulse width modulation (SPWM) scheme. modification shows great potential reducing and retained better shape at output. method avoids requirement high capacity DC link capacitors, are unavoidable in most present three-level industrial Moreover is less complex than other available clamping...
Sixteen patients with histologically confirmed lupus erythematosus profundus were followed for a decade (on average). At the initial examination, two of 16 (12%) fulfilled 1982 American Rheumatism Association (ARA) criteria systemic (SLE). During period observation, SLE developed in another patients, both whom malar rash. The remaining 12 (75%) never met SLE. Four (25%) had no extracutaneous manifestation. In conclusion, most have relatively mild disease course, although few develop...
Abstract The semi-empirical method, in which small-event records are used as Green's functions to synthesize strong ground motions from a large earthquake, has become one of the most practical methods for generating input motion earthquake-resistant design structures. stability synthesized was examined applicability engineering purposes. accelerograms 1980 Izu-Hanto-Toho-Oki, Japan, earthquake with magnitude 6.7 were simulated by using 17 foreshocks and aftershocks magnitudes 3.4 4.9....
Abstract The stereoselective epoxidation of styrene was catalyzed by H 2 O ‐dependent cytochrome P450 SPα in the presence carboxylic acids as decoy molecules. stereoselectivity oxide could be altered nature In particular, chirality at α‐positions molecules induced a clear difference product: ( R )‐ibuprofen enhanced formation S )‐styrene oxide, whereas preferentially afforded oxide. crystal structure an )‐ibuprofen‐bound (resolution 1.9 Å) revealed that carboxylate group served acid–base...
The paper presents a real time gesture recognition method for interactive systems which can perform an interaction like human communication. This recognizes user's using the eigenspace constructed from multi-input image sequences. Since this represents approximate 3D information of gesture, complicated gestures may have self-occlusion and confusion in single input sequence be recognized correctly. Moreover, is suitable obtaining degree such as speed magnitude. Using method, authors realize...
The effects of hydrogen have been studied on low carbon steel (JIS S10C), which contains limited amount pearlite. Fatigue life and its strain rate dependence examined. possible mechanism effect those properties has discussed. absorbed was 0.5–1.5 mass-ppm, according to the thermal desorption analysis (TDA). Main part is dissolved in matrix; rest trapped by This small severely reduces fatigue life, even S10C that considered be less susceptible embrittlement. more absorbed, is. Hydrogen...
We report an unexpectedly large flux loss observed in permanent magnets one of the undulators operated SACLA, x-ray free electron laser facility Japan. Characterizations individual extracted from relevant undulator have revealed that was caused by a homogeneous magnetization reversal extending over wide area, but not demagnetization damaged radiation. show estimated flux-loss rate is much higher than what reported previous papers, and its distribution more localized to upstream side. Results...