A5102000502- Radioactive Decay and Measurement Techniques
- Radioactivity and Radon Measurements
- Radiation Detection and Scintillator Technologies
- Scientific Measurement and Uncertainty Evaluation
- Medical Imaging Techniques and Applications
- Nuclear Physics and Applications
- Superconducting and THz Device Technology
- Radiation Therapy and Dosimetry
- Bacteriophages and microbial interactions
- Radioactive contamination and transfer
- Particle Detector Development and Performance
- Probiotics and Fermented Foods
- Advanced Radiotherapy Techniques
- Radiation Dose and Imaging
- Atomic and Subatomic Physics Research
- Space exploration and regulation
- Advanced X-ray and CT Imaging
- Radio Frequency Integrated Circuit Design
- Carbohydrate Chemistry and Synthesis
- Cellular Mechanics and Interactions
- Environmental, Ecological, and Cultural Studies
- Astrophysics and Cosmic Phenomena
- Semiconductor materials and devices
- Advanced Semiconductor Detectors and Materials
- History and Developments in Astronomy
National Institute of Advanced Industrial Science and Technology
2015-2024
Tokyo Metropolitan University
2021
The University of Tokyo
1993-2021
Kyushu Institute of Technology
2021
Australian Nuclear Science and Technology Organisation
2017
Inha University
2014
Osaka University
2014
Shizuoka University
2014
National Institute for Materials Science
2014
Kyoto University
2012
This investigation was undertaken to clarify ultrastructure of Cheddar cheese texture and morphological changes in lactic acid bacteria firmly embedded cheese. Fine structures ripened for 5 months, sliced into ultra-thin sections were observed with an electron microscope. Cheese often found crowded around larger fat globules limited regions Shapes living cells short rod-like. Cell walls, cross-wall several organelles distinctly cells. Intact recognized be clearly differentiated from dead by...
Detailed uncertainty reporting is imperative for proficiency tests and comparison exercises because uncertainties need to be comparable trusted by all the participants. Even though participants do their best follow Guide Expression of Uncertainty in Measurement, ambiguities divergences about evaluation remain. Consequently, analyze situation, CCRI (II) Uncertainties Working Group proposed a exercise (CCRI(II)-S7) relatively simple primary activity measurement: standardization 60Co source...
Neutron source emission rates are determined by absolute or relative measurement. The measurement is performed comparing between a sample and calibrated reference of the same type. In this calibration, energy spectra sources should be identical, since normally there exists dependence in response neutron detectors. We propose method calibration rate different types spectra. present method, located at center graphite pile thermal flux special position monitored compared. gold foil activation...
In September 2011, the third comparison of activity measurements 99m Tc using Transfer Instrument International Reference System (SIRTI) took place at National Metrology Institute Japan (NMIJ). An ampoule containing about 38 kBq traceable to NMIJ primary standard was measured in SIRTI for more than three half-lives. No 99 Mo impurity had been identified solution. The comparison, identifier BIPM.RI(II)K4.Tc-99m, is linked BIPM.RI(II)-K1.Tc-99m and degrees equivalence with key reference value...
In order to read out current signals from large-scale arrays of transition edge sensors (TES), microwave SQUID multiplexers (MW-MUX) have been developed by several groups. Reduction crosstalk induced in the multiplexer is important maintain energy resolution or noise equivalent power detector arrays. present study, between channels MW-MUX with five different designs experimentally evaluated. The resonance frequency separation ten times as large resonator bandwidth. Without flux-ramp...
Wernher von Braun, who pursued the art of rocket building for forty years, also practiced organization throughout his career. In 1932, when German army began sponsoring work, he had just a single mechanic as assistant.1 Thirty years later was director Marshall Space Flight Center in Huntsville, Alabama, with staff seven thousand and tens thousands more employed by its contracting firms. The then largest field center National Aeronautics Administration (NASA), still expanding to meet...
Purpose: Point-like <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">22</sup> Na radioactive sources have been widely used for checking radiation detectors that measure annihilation photons and evaluating PET scanners. We developed new types of point-like are expected to be more symmetric than conventional source in the angular distribution emitted photons. The purpose this study is use Monte Carlo simulation investigate basic characteristics...
The quality factors and noise performances of superconducting resonators play an important role in microwave SQUID multiplexer (MW-MUX). Since we develop for transition edge sensor arrays, the operation temperature is around 100 mK where effects two level system (TLS) can be significant. In this paper, have investigated electrode-material or wafer dependence performance MW-MUX by characterizing four types resonators. Although resonance frequency power Qu show clear difference among...
A 320-keV spectrometer based on an 8-pixel transition edge sensor (TES) has been developed. It involves a unique 7-μm thick membrane consisting of silicon dioxide (SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ), nitride (Si xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> N xmlns:xlink="http://www.w3.org/1999/xlink">y</sub> and SiO . This supports 0.8-mm Sn absorber with suitable stopping power for photon energy E=320 keV is...
Plasma-assisted epitaxy has been successfully applied to grow device-quality GaAs and GaSb layers on semi-insulating at relatively low substrate temperatures. Nondoped deposited in argon hydrogen plasma showed p- n-type conduction, respectively. The mobility As-grown nondoped n-layers a temperature of 550°C is 3200 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> /V . s. both p-type conduction. Hole concentration Hall an undoped layer...