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Journal Articles

Enhancement of element production by incomplete fusion reaction with weakly bound deuteron

Wang, H.*; Otsu, Hideaki*; Chiga, Nobuyuki*; Kawase, Shoichiro*; Takeuchi, Satoshi*; Sumikama, Toshiyuki*; Koyama, Shumpei*; Sakurai, Hiroyoshi*; Watanabe, Yukinobu*; Nakayama, Shinsuke; et al.

Communications Physics (Internet), 2(1), p.78_1 - 78_6, 2019/07

 Times Cited Count:7 Percentile:63.57(Physics, Multidisciplinary)

Searching for effective pathways for the production of proton- and neutron-rich isotopes through an optimal combination of reaction mechanism and energy is one of the main driving forces behind experimental and theoretical nuclear reaction studies as well as for practical applications in nuclear transmutation of radioactive waste. We report on a study on incomplete fusion induced by deuteron, which contains one proton and one neutron with a weak binding energy and is easily broken up. This reaction study was achieved by measuring directly the cross sections for both proton and deuteron for $$^{107}$$Pd at 50 MeV/u via inverse kinematics technique. The results provide direct experimental evidence for the onset of a cross-section enhancement at high energy, indicating the potential of incomplete fusion induced by loosely-bound nuclei for creating proton-rich isotopes and nuclear transmutation of radioactive waste.

Journal Articles

Occurrence and potential activity of denitrifiers and methanogens in groundwater at 140 m depth in Pliocene diatomaceous mudstone of northern Japan

Katsuyama, Chie*; Nashimoto, Hiroaki*; Nagaosa, Kazuyo*; Ishibashi, Tomotaka*; Furuta, Kazuki*; Kinoshita, Takeshi*; Yoshikawa, Hideki; Aoki, Kazuhiro; Asano, Takahiro*; Sasaki, Yoshito; et al.

FEMS Microbiology Ecology, 86(3), p.532 - 543, 2013/12

 Times Cited Count:11 Percentile:33.13(Microbiology)

Anaerobic microbial activity has a major influence on the subsurface environment, and should be considered in subsurface activities including the construction of radioactive waste repositories. We investigated denitrification and methanogenesis in anoxic groundwater from 140 m depth in two boreholes, where the redox potential fluctuated. The average maximum potential denitrification rates, measured under anaerobic conditions in the two boreholes using an $$^{15}$$N tracer. Methanogenesis candidates were detected by 16S rRNA gene analysis. Although the stable isotope signatures suggested that some of the dissolved methane was of biogenic origin, no potential for methane production was evident during the incubations. The groundwater at 140 m depth did not contain oxygen, had an Eh ranging from -144 to 6.8 mV, and was found to be a potential field for denitrification.

Journal Articles

The H-Invitational Database (H-InvDB); A Comprehensive annotation resource for human genes and transcripts

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:73.43(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.

Journal Articles

Radiation grafting of styrene into crosslinked PTEE films and subsequent sulfonation for fuel cell applications

Yamaki, Tetsuya; Asano, Masaharu; Maekawa, Yasunari; Morita, Yosuke; Suwa, Takeshi; Chen, J.*; Tsubokawa, Norio*; Kobayashi, Kazuhiro*; Kubota, Hitoshi*; Yoshida, Masaru

Radiation Physics and Chemistry, 67(3-4), p.403 - 407, 2003/08

 Times Cited Count:76 Percentile:97.3(Chemistry, Physical)

no abstracts in English

Journal Articles

Styrene grafted and sulfonated proton conducting membranes based on radiation-crosslinked polytetrafluoroethylene and their fuel cell applications

Yamaki, Tetsuya; Asano, Masaharu; Morita, Yosuke*; Suwa, Takeshi*; Yoshida, Masaru

Proceedings of 9th International Conference on Radiation Curing (RadTech Asia '03) (CD-ROM), 4 Pages, 2003/00

Proton exchange membranes were prepared by the radiation-induced grafting of styrene into crosslinked polytetrafluoroethylene (PTFE) films and subsequent sulfonation. The degree of grafting was controlled in the range of 7-75% by the crosslinking density of the PTFE matrix as well as the grafting conditions. The films at the grafting yield of $$geq$$ 30% were found to give the ion exchange membranes with a homogeneous distribution of sulfonic acid groups. The resulting membranes showed a large ion exchange capacity reaching 2.9 meq g$$^{-1}$$, which exceeded the performance of commercially-available perfluorosulfonic acid films such as Nafion. This will encourage the use of our ion exchange membranes in polymer electrolyte fuel cells.

Journal Articles

Development of polymer electrolyte membrane for fuel cell by radiation induced graft polymerization

Suwa, Takeshi; Morita, Yosuke

Hoshasen To Sangyo, (93), p.22 - 28, 2002/03

no abstracts in English

Journal Articles

Polymer electrolyte membrane for fuel cell produced by radiation

Suwa, Takeshi

Porima Daijesuto, 54(3), p.17 - 26, 2002/03

no abstracts in English

Journal Articles

Thermal stability and EL efficiency of polymer thin film prepared from TPD acrlate

Tamada, Masao; Koshikawa, Hiroshi; Suwa, Takeshi; Yoshioka, Terufumi*; Usui, Hiroaki*; Sato, H.*

Polymer, 41(15), p.5661 - 5667, 2000/07

 Times Cited Count:16 Percentile:51.26(Polymer Science)

no abstracts in English

Journal Articles

Volume phase transition induced by temperature sensitive DL-amino acid methyl ester side chain based copolymer gels

Hiroki, Akihiro*; *; Yoshida, Masaru; Suwa, Takeshi; Asano, Masaharu; Katakai, Ryoichi*

Designed Monomers and Polymers, 3(3), p.381 - 387, 2000/00

 Times Cited Count:3 Percentile:15.84(Polymer Science)

no abstracts in English

Journal Articles

UV polymerization of triphenylaminemethylacrylate thin film on ITO substrate

Tamada, Masao; Koshikawa, Hiroshi; Hosoi, Fumio; Suwa, Takeshi; Usui, H.*; *; Sato, H.*

Polymer, 40(1), p.3061 - 3067, 1999/00

no abstracts in English

Journal Articles

Crosslinking of polyvinylcarbazole with electron beam irradiation

Tamada, Masao; Koshikawa, Hiroshi; Hosoi, Fumio; Suwa, Takeshi

Radiation Physics and Chemistry, 54(4), p.409 - 411, 1999/00

 Times Cited Count:2 Percentile:21.63(Chemistry, Physical)

no abstracts in English

Journal Articles

Thermo- and pH-responsive gels for application in colon delivery systems

Yoshida, Masaru; Asano, Masaharu; Suwa, Takeshi; Katakai, Ryoichi*

Radiation Physics and Chemistry, 55(5-6), p.677 - 680, 1999/00

 Times Cited Count:24 Percentile:84.77(Chemistry, Physical)

no abstracts in English

Journal Articles

FTIR reflection absorption spectroscopy for organic thin film on ITO substrate

Tamada, Masao; Koshikawa, Hiroshi; Hosoi, Fumio; Suwa, Takeshi

Thin Solid Films, 315(1-2), p.40 - 43, 1998/00

 Times Cited Count:12 Percentile:56.32(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Creation of thermo-responsive ion-track membranes

Yoshida, Masaru; Asano, Masaharu; Suwa, Takeshi; N.Reber*; R.Spohr*; Katakai, Ryoichi*

Advanced Materials, (9), p.757 - 758, 1997/09

 Times Cited Count:27 Percentile:98.16(Chemistry, Multidisciplinary)

no abstracts in English

Journal Articles

Simultaneously occurring process of radiation-induced polymerization, crosslinking, and degradation of N-isopropylacrylamide

Yoshida, Masaru; *; Asano, Masaharu; Suwa, Takeshi; Kubota, Hitoshi*; Katakai, Ryoichi*

J. Polym. Sci., Part A, 35, p.3075 - 3077, 1997/00

no abstracts in English

Journal Articles

Fabrication of oriented thin film of copper-phthalocyanine with physical vapor deposition in inert-gas atmosphere

Tamada, Masao; ; Hosoi, Fumio; Suwa, Takeshi

BEAMS 1996: Dai-7-Kai Ryushisen No Sentanteki Oyo Gijutsu Ni Kansuru Shimpojiumu, 0, p.157 - 160, 1996/00

no abstracts in English

Journal Articles

Chemical decontamination process with sulfuric acid-cerium(IV) for decommissioning; Decontamination of dismantled components

Suwa, Takeshi; *; *; Tachikawa, Enzo

Proc. of 1991 JAIF Int. Conf. on Water Chemistry in Nuclear Power Plants: Water Chemistry,91, p.737 - 742, 1991/00

no abstracts in English

Journal Articles

Development of chemical decontamination process with sulfuric acid-cerium(IV) for decommissioning; Demmonstration test at JPDR recirculation system

Suwa, Takeshi; *; ; ; ; Hoshi, Michio; Sagawa, Chiaki; Yonezawa, Chushiro; ; ; et al.

Nihon Genshiryoku Gakkai-Shi, 30(11), p.1020 - 1029, 1988/11

 Times Cited Count:0 Percentile:1.69(Nuclear Science & Technology)

no abstracts in English

25 (Records 1-20 displayed on this page)