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Hirschberger, M.*; Nakajima, Taro*; Kriener, M.*; Kurumaji, Takashi*; Spitz, L.*; Gao, S.*; Kikkawa, Akiko*; Yamasaki, Yuichi*; Sagayama, Hajime*; Nakao, Hironori*; et al.
Physical Review B, 101(22), p.220401_1 - 220401_6, 2020/06
Times Cited Count:35 Percentile:92.08(Materials Science, Multidisciplinary)Sasaki, Hirokazu*; Nishikubo, Hideo*; Nishida, Shinsuke*; Yamazaki, Satoshi*; Nakasaki, Ryusuke*; Isomatsu, Takemi*; Minato, Ryuichiro*; Kinugawa, Kohei*; Imamura, Akihiro*; Otomo, Shinya*; et al.
Furukawa Denko Jiho, (138), p.2 - 10, 2019/02
no abstracts in English
Kubota, Masato; Yamada, Hiroyuki*; Nakao, Hironori*; Okamoto, Jun*; Yamasaki, Yuichi*; Sawa, Akihito*; Murakami, Yoichi*
Japanese Journal of Applied Physics, 53(5S1), p.05FH07_1 - 05FH07_5, 2014/05
Times Cited Count:2 Percentile:8.89(Physics, Applied)Okamoto, Jun*; Nakao, Hironori*; Yamasaki, Yuichi*; Wadachi, Hiroki*; Tanaka, Arata*; Kubota, Masato; Horigane, Kazumasa*; Murakami, Yoichi*; Yamada, Kazuyoshi*
Journal of the Physical Society of Japan, 83(4), p.044705_1 - 044705_6, 2014/04
Times Cited Count:8 Percentile:55.49(Physics, Multidisciplinary)Yokoyama, Sumi; Yamasaki, Keizo*; Oki, Yuichi*; Osada, Naoyuki*
Hoken Butsuri, 43(4), p.333 - 340, 2008/12
To assess internal exposure due to inhalation of radioactive aerosols and gases generated in high-energy accelerator facilities, physicochemical properties such as particle size of aerosols and chemical form of gases are important information. We measured the particle size distribution and concentration of aerosols coexisting with radionuclide formed by high-energy radiation emission in the target room of LINAC and estimated the long term variation of particle size and concentration of radioactive aerosols in high-energy acceleration facilities.
Yamasaki, Chisato*; Murakami, Katsuhiko*; Fujii, Yasuyuki*; Sato, Yoshiharu*; Harada, Erimi*; Takeda, Junichi*; Taniya, Takayuki*; Sakate, Ryuichi*; Kikugawa, Shingo*; Shimada, Makoto*; et al.
Nucleic Acids Research, 36(Database), p.D793 - D799, 2008/01
Times Cited Count:51 Percentile:71.37(Biochemistry & Molecular Biology)Here we report the new features and improvements in our latest release of the H-Invitational Database, a comprehensive annotation resource for human genes and transcripts. H-InvDB, originally developed as an integrated database of the human transcriptome based on extensive annotation of large sets of fulllength cDNA (FLcDNA) clones, now provides annotation for 120 558 human mRNAs extracted from the International Nucleotide Sequence Databases (INSD), in addition to 54 978 human FLcDNAs, in the latest release H-InvDB. We mapped those human transcripts onto the human genome sequences (NCBI build 36.1) and determined 34 699 human gene clusters, which could define 34 057 protein-coding and 642 non-protein-coding loci; 858 transcribed loci overlapped with predicted pseudogenes.
Yamasaki, Keizo*; Oki, Yuichi*; Osada, Naoyuki*; Yokoyama, Sumi; Yamada, Yuji*; Tokonami, Shinji*; Fukutsu, Kumiko*; Iida, Takao*; Rahman, N. M.*; Shimo, Michikuni*
no journal, ,
no abstracts in English
Osada, Naoyuki*; Oki, Yuichi*; Yamasaki, Keizo*; Yokoyama, Sumi
no journal, ,
no abstracts in English
Yamasaki, Keizo*; Oki, Yuichi*; Osada, Naoyuki*; Iida, Takao*; Shimo, Michikuni*; Yamada, Yuji*; Tokonami, Shinji*; Fukutsu, Kumiko*; Yokoyama, Sumi
no journal, ,
The physicochemical properties of radioactive aerosols are important factors to assess internal dose at high energy accelerator facilities. In Kyoto University Research Reactor Institute, a generation of radioactive aerosols in ADSR (Accelerator-Driven Subcritical Reactor) facilities was studied as part of the research project of ADSR. The generation of radioactive aerosols in high intensity irradiation fields of ADSR was simulated by irradiation of the target room air at LINAC. We measured the particle size of radioactive aerosols in the target room during the acceleration period. Natural radon aerosols in the target room grew to the larger size because of an attachment of radon daughters to non-radioactive aerosols. The particle size of the produced radioactive aerosols was also larger with time. This would mean that a formation mechanism of the radioactive aerosols produced at high energy accelerator facilities is the same as radon one.
Kubota, Masato; Yamada, Hiroyuki*; Okamoto, Jun*; Yamasaki, Yuichi*; Nakao, Hironori*; Murakami, Yoichi*; Sawa, Akihito*
no journal, ,
no abstracts in English
Kubota, Masato; Yamada, Hiroyuki*; Okamoto, Jun*; Yamasaki, Yuichi*; Nakao, Hironori*; Murakami, Yoichi*; Sawa, Akihito*
no journal, ,
no abstracts in English
Kubota, Masato; Sudayama, Takaaki*; Yamasaki, Yuichi*; Okamoto, Jun*; Nakao, Hironori*; Murakami, Yoichi*; Yamada, Hiroyuki*; Sawa, Akihito*
no journal, ,
no abstracts in English
Kubota, Masato; Takeda, Masayasu; Okamoto, Jun*; Yamasaki, Yuichi*; Nakao, Hironori*; Murakami, Yoichi*; Sawa, Akihito*
no journal, ,
no abstracts in English
Tanaka, Kazuya; Kurihara, Yuichi*; Tomita, Jumpei; Maamoun, I.; Yamasaki, Shinya*; Tokunaga, Kohei; Fukuyama, Kenjin*; Kozai, Naofumi
no journal, ,
We collected surface sediment and water samples at a U mill tailings pond in the Ningyo-toge center. Radioactivity concentrations of Ra in sediments were 12,000 - 29,000 Bq/kg while those in water ranged from 60 to 580 mBq/L. As a result, apparent distribution coefficients of Ra between ferric sediment and water were estimated to be 3.1 10 - 3.8 10 mL/g, which were higher than reported ones for ferrihydrite and goethite. This suggests that another host on which Ra is strongly fixed would be present in sediment if we assume equilibrium between sediment and water. It is possible that Mn(IV) oxide as a minor component contributed to an increase in the apparent distribution coefficients. Another possibility is upward flow of pore water containing Ra or diffusion of Ra released from lower sediment layers. Either scenario provides additional input of Ra to surface sediment. In this case, surface sediment and water did not reach equilibrium with each other, but Ra concentrations in surface sediments were governed by dynamics through input of Ra from porewater as well as groundwater in sediment-water interaction.
Tanaka, Kazuya; Kurihara, Yuichi*; Tomita, Jumpei; Yamasaki, Shinya*; Tokunaga, Kohei; Kozai, Naofumi
no journal, ,
no abstracts in English