Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Oigawa, Hiroyuki; Nishihara, Kenji; Sasa, Toshinobu; Tsujimoto, Kazufumi; Sugawara, Takanori; Iwanaga, Kohei; Kikuchi, Kenji; Kurata, Yuji; Takei, Hayanori; Saito, Shigeru; et al.
Proceedings of 5th International Workshop on the Utilisation and Reliability of High Power Proton Accelerators (HPPA-5), p.387 - 399, 2008/04
JAEA has been promoting the research and development on accelerator-driven subcritical system (ADS) as a dedicated system for the transmutation of long-lived radioactive nuclides. The ADS proposed by JAEA is a lead-bismuth eutectic cooled, tank-type subcritical reactor with the thermal power of 800 MWth driven by a 30 MW superconducting linac. As for the design study of the future ADS, reduction of the maximum temperature of fuel claddings and verification of the feasibility of the beam window are under way. As for the Transmutation Experimental Facility (TEF) of the J-PARC project, design study including experimental device to deal with minor actinide fuels is being conducted. To facilitate the research and development on ADS, a common road map is necessary to be shared by international communities. The TEF program can play an important role in such an international context as an experimental platform to conduct basic and flexible experiments.
Oigawa, Hiroyuki; Nishihara, Kenji; Tsujimoto, Kazufumi; Takei, Hayanori; Kikuchi, Kenji; Kurata, Yuji; Saito, Shigeru; Mizumoto, Motoharu; Sasa, Toshinobu; Sugawara, Takanori; et al.
Proceedings of 9th OECD/NEA Information Exchange Meeting on Actinide and Fission Product Partitioning and Transmutation, p.371 - 382, 2007/00
JAEA has been conducting the R&D on accelerator-driven subcritical system (ADS) as a dedicated system for the transmutation of long-lived radioactive nuclides. The ADS can co-exist with FBR symbiotically and complementarily to enhance the reliability and the safety of the commercial FBR cycle. The R&D activities in JAEA include neutronics, thermal-hydraulic and structural design, transient analysis in case of beam trips, development of spallation target using Pb-Bi, research on the materials, and cost estimation. In addition, the high-intensity proton accelerator project J-PARC is under construction. One of the main experimental facilities of the J-PARC is the Transmutation Experimental Facility (TEF), which is assigned as Phase-II of the project.
Okabe, Toshihiro*; Ono, Hiroyuki*; Hatayama, Ichiro*; Waguri, Atsushi*; Sawada, Yuzuru*; Tsugawa, Hidehito*; Ichida, Tadao*; Nakane, Akio*; Sano, Teruo*; Tanaka, Kazuaki*; et al.
no journal, ,
Hiroki, Akihiro; Iwanaga, Shigeru; Tamada, Masao; Okabe, Toshihiro*; Ono, Hiroyuki*; Hatayama, Ichiro*; Waguri, Atsushi*; Sawada, Yuzuru*; Nakane, Akio*; Sano, Teruo*
no journal, ,
Aomori Hiba oil is oil of the natural thing origin extracted from the sawdust generated during lumbering of Aomori Hiba that is the tree in Aomori prefecture by the steam distillation. The extracted Aomori Hiba oil has excellent antibacterial and insecticidal effects. To heighten the added value of the Aomori Hiba oil, the water-soluble nano-hiba oil with about 10 nm of particle size was developed by applying emulsification technology to the oil. The emulsified Aomori Hiba oils showed no signs of phase separation and remained intact even six months after its preparation. Since the nano-hiba oil can be sprayed quickly, antibacterial examinations were carried out to explore potential applications in preventions of hospital infection and damages caused by blight and insect in agricultural environments. Furthermore, a novel antibacterial material composed of nano-hiba oil and water-absorption biodegradable gel was investigated. Hydroxypropyl cellulose (HPC) hydrogels as support materials for the nano-hiba oil were prepared by irradiating to paste-like aqueous solutions of HPC. Degree of swelling of the HPC hydrogels was influenced by compositions in nano-hiba oils. Subsequently, absorbability in nano-hiba oil as well as the antibacterial effects was evaluated. The HPC hydrogels swollen in the nano-hiba oil mixing silica showed excellent antibacterial effect up to three weeks. Therefore, it was suggested that the hydrogels containing nano-hiba oil are suitable as antibacterial materials.
Hiroki, Akihiro; Nagasawa, Naotsugu; Iwanaga, Shigeru; Yoshii, Fumio; Taguchi, Mitsumasa; Tamada, Masao
no journal, ,
no abstracts in English