Explanipedia

High charge and pulse duration tunable electron gun system for pulsed X-ray source Open

Daisuke Satoh, H. Kato, Takeshi Fujiwara, Masahito Tanaka, Ryoichi Suzuki · 2025

CFD Analysis of Takeoff from a Water Surface for an Insect-Scale Aerial/Aquatic Robot Open

N. Hashimoto, Ryoichi Suzuki, Koki KIKUCHI · 2024

To develop an insect-scale aerial/aquatic robot, we analyzed takeoff mechanisms to counteract surface tension, such as paddling, slapping, and clap-and-fling. Because a diving beetle, Eretes griseus , takes off directly from the water surf…

Development of a porous silica cavity for laser excitation of confined positronium Open

Kenji Shu, Kyohei Yamada, Kaori Hashidate, Akira Ishida, T. Namba , et al. · 2023

Laser cooling of positronium (Ps) is an important technique to advance the frontier of science by, for instance, realizing the first Bose-Einstein condensation of antimatters. It was proposed that performing laser cooling on Ps trapped in …

A Case Report of Myositis Ossificans Circumscripta in a Dog Whose Lameness Disappeared Following Surgical Resection Open

Ryoichi Suzuki, Masakazu Shimada, Kunihiro MORIMOTO, Nobuo KANNO, Shuji Suzuki , et al. · 2023

A 3-year and 4-month-old spayed female Doberman Pinscher was referred because of progression of the lameness of right hindlimb. Orthopedic examination revealed decreased range of motion of the hip joint and significant skeletal muscle atro…

Development and evaluation of a drowning prevention device at bathrooms Open

Ryo Chigusa, Ryoichi Suzuki · 2021

The number of deaths caused by drowning in bathtubs has been increased because of medical symptoms such as stroke of seizures in Japan. The objective of this research is to design and develop a new drowning prevention device for using at b…

Development and evaluation of a communication robot for elderly people with dementia during toileting Open

Ryusei ENOMOTO, Motonari UMEKI, Yoshiaki KITANO, Kayo Terada, T Takahashi , et al. · 2021

The purpose of this study is to develop and evaluate a communication robot that which controls behaviors of elderly people with dementia in care homes. The proposed robot has functions to detect standing up motion of elderly people and to …

Newly constructed compact accelerator-based neutron facility at AIST Open

K. Kino, Takeshi Fujiwara, M. Furusaka, Noriyosu Hayashizaki, H. Kato , et al. · 2020

We have constructed a compact accelerator-based neutron facility at the National Institute of Advanced Industrial Science and Technology (AIST) in Japan aiming at development of structural materials of transportation vehicles for weight re…

A runner modernization in a Deriaz turbine hydropower station Open

H Kikuta, Ryoichi Suzuki, Shogo Nakamura, D Anciger · 2019

This paper introduces our experience of a Deriaz turbine modernization project. N hydropower station in Japan, with the 50MW Deriaz turbine (turbine mode only), had been operated for approximately 50 years. Not only for the purpose of the …

Development of “D-shuttle” Personal Radiation Dosimeter Open

Ryoichi Suzuki, Hiroyuki Ohguchi · 2018

東日本大震災による東京電力福島第一原子力発電所での事故に対応して，一般の住民が生活の中での放射線量を計測するための放射線線量計“D-シャトル”を開発した。この線量計は，小型軽量で，各個人が携帯して必要に応じて表示器で記録を見ることができ，1年以上動作し，ユーザーの電池交換が不要である。本稿では，“D-シャトル”線量計の開発の経緯と機能について紹介するとともに，リアルタイムモニタリングへの応用についても紹介する。

Study on positronium Bose–Einstein condensation Open

Akira Ishida, Kenji Shu, Tomoyuki Murayoshi, Xing Fan, T. Namba , et al. · 2018

Realization of the Bose–Einstein condensation (BEC) of positronium is a long-standing challenge of positron physics. Since the positron is the antimatter of the electron, the positronium is the antimatter of itself, and its gravity interac…

Study on positronium Bose–Einstein condensation Open

Akira Ishida, Kenji Shu, Tomoyuki Murayoshi, Xing Fan, T. Namba , et al. · 2018

Realization of the Bose–Einstein condensation (BEC) of positronium is a long-standing challenge of positron physics. Since the positron is the antimatter of the electron, the positronium is the antimatter of itself, and its gravity interac…

Development of Mobil-Robot system for inspecting Corrosion Under Insulation Open

Itaru Miura, Ryoichi Suzuki, H. Kato, Toru Aoki, Akifumi Koike , et al. · 2018

As for much industry plants, 40 years passed after construction. The rationalization of the inspection for corrosion under insulation(CUI) of the piping is necessary now. There is much piping in the high place, and a large amount of expens…

Detection of re-emission positrons on metal surfaces during slow positron measurements Open

A. Kinomura, Ryoichi Suzuki, Hiroshi Ogawa, Nagayasu Oshima, Brian E. O’Rourke , et al. · 2017

Detection methods for re-emitted positrons from Ni samples were investigated for in-situ positron annihilation lifetime spectroscopy during ion beam irradiation. A conventional mesh electrode and a ring electrode were examined to detect re…

Study on Bose-Einstein condensation of positronium Open

Kenji Shu, Tomoyuki Murayoshi, Xing Fan, Akira Ishida, T. Yamazaki , et al. · 2017

A new method to realize Bose-Einstein condensation (BEC) of positronium (Ps) is proposed and a Monte-Carlo simulation was performed to evaluate the cooling efficiency of Ps atoms. Ps-BEC was found to be possible by a method including laser…

Hole size distributions in cardo-based polymer membranes deduced from the lifetimes of ortho-positronium Open

Yoshinori Kobayashi, A. Kinomura, S. Kazama, Kazuya Inoué, T. Toyama , et al. · 2016

To clarify the free volume size distributions of the cardo-based polymer membranes, where ortho-positronium (o-Ps) undergoes pick-off annihilation, the o-Ps lifetime distributions were analyzed by the LT9 programme. It was found that the c…

Solid-State Reaction and Vacancy-Type Defects in Bilayer Fe/Hf Studied by the Slow Positron Beam Open

Kazunobu Yamada, Tomoaki Sasaki, Takahiro Nagata, I. Kanazawa, Ryoichi Suzuki , et al. · 2015

The positron annihilation lifetimes and the Doppler broadening by slow positron beam are measured in thin Fe films with thickness 500 nm, a thin Hf film with thickness 100 nm, and the bilayer Fe (50 nm)/Hf (50 nm) on quartz glass substrate…

108 Development of Robotic system for inspecting Corrosion Under Insulation : Development of Low Noise Neutron Moisture Meter Robot and Compact X-ray System Robot Open

Itaru Miura, Ryoichi Suzuki, Hidetoshi KATO, Toru Aoki, Akifumi Koike , et al. · 2015

As for much industry plants, 40 years passed after construction. The rationalization of the inspection for corrosion under insulation(CUI) of the piping is necessary now. There is much piping in the high place, and a large amount of expens…

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