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Yoshinori Sakurai,Hiroki Tanaka,Takushi Takata,Nozomi Fujimoto,Minoru Suzuki,Shinichiro Masunaga,Yuko Kinashi,Natsuko Kondo,Masaru Narabayashi,Yosuke Nakagawa,Tsubasa Watanabe,Koji Ono,Akira Maruhashi 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.67 No.1
At the Kyoto University Research Reactor Institute (KURRI), a clinical study of boron neutron capture therapy (BNCT) using a neutron irradiation facility installed at the research nuclear reactor has been regularly performed since February 1990. As of November 2014, 510 clinical irradiations were carried out using the reactor-based system. The world’s first accelerator-based neutron irradiation system for BNCT clinical irradiation was completed at this institute in early 2009, and the clinical trial using this system was started in 2012. A shift of BCNT from special particle therapy to a general one is now in progress. To promote and support this shift, improvements to the irradiation system, as well as its preparation, and improvements in the physical engineering and the medical physics processes, such as dosimetry systems and quality assurance programs, must be considered. The recent advances in BNCT at KURRI are reported here with a focus on physical engineering and medical physics topics.
Effect of energy deposition on TiO2 nanosized powder synthesized by pulsed wire discharge
Yoshinori Tokoi,Tsuneo Suzuki,Tadachika Nakayama,Hisayuki Suematsu,Futao Kaneko,Koichi Niihara 한국물리학회 2009 Current Applied Physics Vol.9 No.3
Titanium dioxide (TiO2) nanosized powder was synthesized by pulsed wire discharge (PWD) using Ti wire in O2 gas. The pressure of O2 gas (P) and relative energy (K), which is defined as the ratio of the charged energy of the capacitor to the vaporization energy in the wire, were varied from 10 to 100 kPa and 4.3– 51.9, respectively. The density of the plasma/vapor (Dexp), determined by the maximum volume, was decreased with decreasing P and increasing K as observed by high-speed photography during PWD. Xray diffraction analysis confirmed that the rutile content (CR) was increased from 7 to 84 vol% with decreasing Dexp. The median diameter (D50), determined from scanning electron microscopy, was decreased from 36.5 to 10 nm with decreasing Dexp. Therefore, an increase in CR and decrease in D50 both accompany the decrease in Dexp. Titanium dioxide (TiO2) nanosized powder was synthesized by pulsed wire discharge (PWD) using Ti wire in O2 gas. The pressure of O2 gas (P) and relative energy (K), which is defined as the ratio of the charged energy of the capacitor to the vaporization energy in the wire, were varied from 10 to 100 kPa and 4.3– 51.9, respectively. The density of the plasma/vapor (Dexp), determined by the maximum volume, was decreased with decreasing P and increasing K as observed by high-speed photography during PWD. Xray diffraction analysis confirmed that the rutile content (CR) was increased from 7 to 84 vol% with decreasing Dexp. The median diameter (D50), determined from scanning electron microscopy, was decreased from 36.5 to 10 nm with decreasing Dexp. Therefore, an increase in CR and decrease in D50 both accompany the decrease in Dexp.
A Process Model for Deciding Elderly Care
(Tomomichi Suzuki),(Takayuki Imai),(Tadahiro Wakasugi),(Yoshinori Iizuka),(Yoshikazu Ojima),(Toru Yaezawa) 한국품질경영학회 2002 The Asian Journal on Quality Vol.3 No.1
Care to an older person is provided based on the care plan that was made by a care manager. Therefore, to improve the quality of elderly care, the quality of the care plan must first be improved. Care managers make care plans considering the physical and mental attributes of the elderly. But, as matters stand, these plans are based on the experience of care managers. Therefore, a framework that can support making appropriate care plans is called for. In order to make appropriate care plans, it is necessary to clarify the relation between the attributes of the elderly and the care that should be provided. In this paper, data from a large-scale investigation of the actual elderly care are analyzed and a process model for deciding the care is proposed. The model provides the necessary basis for what factors must be considered and how the care should be determined.
윤성원,Kenta Suzuki,Hideki Takagi,Hiroshi Hiroshima,Yoshinori Kinoshita,Katsuhiro Hayashi 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.8
High-aspect-ratio microstructures (HARMS) of polyimides have many applications, such as components of microelectromechanical systems and X-ray gratings. This study demonstrates the fabrication of HARMS with vertical and smooth sidewalls in a thick, soluble block-copolymer polyimide (SBCP) film by an UV-assisted thermal imprint process. A preheating condition was controlled as a parameter that dominated the imprint pattern fidelity. After investigating a proper prebaking condition, patterns with a width of 3.4 μm and a height of 35.1 μm with a high-aspect ratio of 10 were successfully structured in an SBCP film that has a thickness of approximately a hundred micrometers. The process has potential as a low-cost fine pattern fabrication process for polyimide-based polymers.
Overview of JCGGDB including New Released GlycoProtDB
Toshihide Shikanai,Hiroyuki Kaji,Yoshinori Suzuki,Noriaki Fujita,Masako Maeda,HonglingWen,Madoka Ishizaki,Hiromichi Sawaki,Hisashi Narimatsu. 한국당과학회 2012 한국당과학회 학술대회 Vol.2012 No.1
The JST/NBDC integrated database project has kicked off last year. JCGGDB was selected as a promotion program of DB integration, aiming to integrate all the glycan-related databases in Japan and build user- friendly search systems. As part of the project, the construction of ACGG-DB (an integrated database for the ACGG: Asian Communications for Glycobiology and Glycotechnology) is also planned in cooperation with Asian countries. As of now we have consolidated data from various Japanese institutes into JCGGDB and developed a cross-search function by keyword entry and integrated search functions by glycan stcurctures. These functions enabled users to easily access various glycan-related databases with a single search. Cheminformatics technologies using chemical structural formula for glycan has been also adopted to provide a search for glycan structures, glycan synthetic products by organic chemistry and recombinant enzymes, glycogene inhibitors, glycosides, and commercial glycans. This Summer, we have released AIST GlycoProtDB, which stores the data of experimentally-proven glycosylation sites on each mouse tissue. We are continuously accumulating experimental results of glycosylation sites, while collecting more information from scientific journals, toward the release of ACGG Glycoprotein Database in autumn. For the future, we will keep developing base technologies for DB integration and linking with databases related to glycoscience as well as other study areas. Some more bioinformatics tools are also being developed to support experimental study. Our aim is to create contents which could be easily and intuitively understood by every user.
Satellite On-board Technologies for Next Generation Mobile Satellite Communication Systems
Mitsugi, Jin,Nakasuga, Yoshinori,Imaizumi, Yutaka,Suzuki, Yoshinori,Ueba, Masazumi 통신위성우주산업연구회 2003 Joint Conference on Satellite Communications Vol.2003 No.-
Next generation mobile satellite communications systems involve various types of traffic, including telephone, satellite SCADA and mobile hot spot traffic. The traffic will be broadband up to 1Gbps. To achieve such systems in the S band at affordable cost, innovations in satellite on-board technology will be required along with the adaptive modulation application. This paper introduces the concept of next generation mobile satellite communication and outline the requirements for the on-board equipment. It also presents a multi-beam feeder with a beam-group concept and an adaptive filter as enabling technology for such systems. The multi-beam feeder technique can provide sufficient satellite antenna gain all over the coverage area while enabling power to be focused on the needed beams. The communication capacity can be significantly enhanced with a meticulous resources assignment, which entails a complicated spectrum layout on the feeder link. The on-board adaptive filter allows the feeder link to be packed while maintaining the enhanced capacity.