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Your search keyword '"Takafumi Toyoda"' showing total 5 results
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5 results on '"Takafumi Toyoda"'

1. Study on the baryon interaction by Ξ hypernuclear spectroscopy with the (K −, K +) reaction

Author

Takeshi Harada, Tomoyuki Hasegawa, Takeshi O. Yamamoto, Zviadi Tsamalaidze, Shinji Kinbara, Jae-Yong Lee, Shin Hyung Kim, Toshiyuki Gogami, Takafumi Toyoda, Hitoshi Sugimura, E. Umezaki, Hiroyuki Fujioka, Susumu Sato, Petr Evtoukhovitch, Hirokazu Tamura, Koji Miwa, Manabu Moritsu, Hitoshi Takahashi, W. S. Jung, T. Nanamura, Erina Hirose, Jung Keun Ahn, Seigo Kato, Kenichi Imai, K. N. Suzuki, Yudai Ichikawa, Y. Nakada, Megumi Naruki, Kenji Hosomi, Mifuyu Ukai, Kanae Aoki, Kohei Takenaka, Tomofumi Nagae, Tomonori Takahashi, Kotaro Shirotori, Manami Fujita, Atsushi Sakaguchi, S. H. Hayakawa, Manami Nakagawa, Shoichi Hasegawa, Ryotaro Honda, Kiyoshi Tanida, S. Marcello, Hiroyuki Ekawa, Shunsuke Kanatsuki, Tsubasa Ohashi, Yuya Akazawa, Kazuki Katayama, Toshiyuki Takahashi, Elena Botta, Hiroyuki Sako, T. J. Moon, and Alessandro Feliciello

Subjects
Physics, Baryon, Nuclear physics, History, Spectroscopy, Computer Science Applications, Education
Published
2020

2. Adhesive behavior of a calcium carbonate particle to solid walls having different hydrophilic characteristics

Author

Yutaka Shibata, Hiroshi Suzuki, Ruri Hidema, Yoshiyuki Komoda, and Takafumi Toyoda

Subjects
Fluid Flow and Transfer Processes, Materials science, Fouling, Mechanical Engineering, chemistry.chemical_element, 02 engineering and technology, Adhesion, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Copper, Crystal, chemistry.chemical_compound, Calcium carbonate, 020401 chemical engineering, Chemical engineering, chemistry, Particle, Adhesive, 0204 chemical engineering, 0210 nano-technology, Diffractometer
Abstract

In order to investigate a fouling mechanism, adhesion behavior of a calcium carbonate particle onto various walls having different hydrophilic/hydrophobic characteristics have been studied. First, adhesion force was measured by atomic force microscope, which decreases with hydrophilicity of walls. Second, fouling phenomena on each plate was measured over time. In the case of the hydrophobic surface, bare copper plate, adhesive calcium carbonate crystal was increased, and the amounts reached the constant values. On the other hand, in the case of the hydrophilic surface, glass plate and hydrophilic coated copper, calcium carbonate crystal was adhered for several hours, then the crystal was removed from the plates. Crystal types of calcium carbonate on each plate were also analyzed by a X-ray diffractometer. The crystal type was varied due to the hydrophilic/hydrophobic characteristics of the plates. From the results, it was expected that the hydrophilic treatments to wall surfaces in heat exchanger might be useful to control fouling phenomena.

Published
2016

4. Fabrication Process of Silica Hard-shell Microcapsule (HSMC) Containing Phase-change Materials

Author

Takafumi Toyoda, Yoshiyuki Komoda, Hiroshi Suzuki, Ruri Hidema, and Reishi Narisada

Subjects
Trimethylolethane, Phase change, chemistry.chemical_compound, Fabrication, Chemical engineering, chemistry, Scientific method, Shell (structure), General Chemistry, Hydrate
Abstract

A fabrication process via the double-emulsion method is proposed for silica hard-shell microcapsules (HSMCs) that contain trimethylolethane (TME) hydrate. The TME-encapsulating silica-HSMCs are pro...

Published
2014

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