Refine your search:     
Report No.
 - 
Search Results: Records 1-13 displayed on this page of 13
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Advanced gel electrophoresis techniques reveal heterogeneity of humic acids based on molecular weight distributions of kinetically inert Cu$$^{2+}$$-humate complexes

Marumo, Kazuki*; Matsumoto, Atsumasa*; Nakano, Sumika*; Shibukawa, Masami*; Saito, Takumi*; Haraga, Tomoko; Saito, Shingo*

Environmental Science & Technology, 53(24), p.14507 - 14515, 2019/12

 Times Cited Count:0 Percentile:0(Engineering, Environmental)

Humic acids (HA) are responsible for the fate of metal ions in the environment. We developed a polyacrylamide gel electrophoresis (PAGE) technique to investigate the MW distributions of metal ion (copper ion). Combining contaminant-metal-free and high-resolution PAGE systems for HA provided accurate MW distributions for the metal ions. Coupling this system with UV-Vis spectrometry and the excitation-emission matrix (EEM) spectrometry-parallel factor analysis (PARAFAC) method revealed new insights into metal-HA complex. Interestingly, the MW distributions of the three metal ions were entirely different, indicating that the presence of specific binding environments in HA for the metal ions depending its MW. The MW distributions of five fluorescent components were associated with the metal ion distributions. Our PAGE-based methodology suggests that metal binding sites and fluorescent components in HA exhibit heterogeneity in terms of metal binding affinity and MW.

Journal Articles

Temporal changes in radiocesium deposition on the Fukushima floodplain

Nakanishi, Takahiro; Sato, Seiji; Matsumoto, Takumi*

Radiation Protection Dosimetry, 184(3-4), p.311 - 314, 2019/10

 Times Cited Count:2 Percentile:42.44(Environmental Sciences)

There has been significant concern about an increase of exposure dose in living sphere due to the accumulation of radiocesium discharged from contaminated mountainous forest in Fukushima. In this study, we investigated the history of radiocesium deposition on some floodplains in Fukushima. Radiocesium concentrations of river suspended particles and air dose rates at floodplains were also observed continuously. In many situations, annual sediment accumulation at floodplains was only several kg m$$^{-2}$$ and its radiocesium concentration was gradually decreasing in line with that of suspended particle. Simultaneously, air dose rates on floodplains were decreasing with time. In 2015 with heavy flood discharge, several hundred kg m$$^{-2}$$ of sediment accumulation and sharply decrease of air dose rate was observed at rivers without reservoir. Conversely, radiocesium accumulation at floodplain was significant reduced due to deposition on upstream reservoir.

Journal Articles

Observation of direct electron heating by the fast waves in the low-hybrid range of frequencies in the JFT-2M tokamak

Yamamoto, Takumi; Uesugi, Yoshihiko; Kawashima, Hisato; Hoshino, Katsumichi; ; Kasai, Satoshi; Kawakami, Tomohide; Kondoh, Takashi; Maeda, Hikosuke; Matsuda, Toshiaki; et al.

Physical Review Letters, 63(11), p.1148 - 1151, 1989/09

 Times Cited Count:17 Percentile:75.33(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

A New mode of improved confinement in discharges with stationary density in JEF-2M

Mori, Masahiro; Suzuki, Norio; Uesugi, Yoshihiko; Ogawa, Toshihide; Ogawa, Hiroaki; Otsuka, Hideo; Odajima, Kazuo; Kasai, Satoshi; Kawakami, Tomohide; Kawashima, Hisato; et al.

Nuclear Fusion, 28(10), p.1892 - 1897, 1988/10

 Times Cited Count:22 Percentile:73.49(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Transition from the L-mode to the H-mode by electron cyclotron heating of a tokamak edge plasma

Hoshino, Katsumichi; Yamamoto, Takumi; Suzuki, Norio; Kawashima, Hisato; Kasai, Satoshi; Kawakami, Tomohide; Maeda, Hikosuke; Matoba, Toru; Matsuda, Toshiaki; Matsumoto, Hiroshi; et al.

Nuclear Fusion, 28(2), p.301 - 306, 1988/00

 Times Cited Count:22 Percentile:73.49(Physics, Fluids & Plasmas)

no abstracts in English

JAEA Reports

Magnetic fluctuations in L-mode and H-mode on the JFT-2M tokamak

Mori, Masahiro; Miura, Yukitoshi; Suzuki, Norio; Uesugi, Yoshihiko; Tamai, Hiroshi; Ogawa, Toshihide; Ogawa, Hiroaki; Otsuka, Hideo; Odajima, Kazuo; Kasai, Satoshi; et al.

JAERI-M 87-117, 13 Pages, 1987/08

JAERI-M-87-117.pdf:0.56MB

no abstracts in English

JAEA Reports

Observation of H-mode by electron cyclotron heating of JFT-2M tokamak preheated by a neutral beam

Hoshino, Katsumichi; Yamamoto, Takumi; Suzuki, Norio; Kawashima, Hisato; Kasai, Satoshi; Kawakami, Tomohide; Maeda, Hikosuke; Matoba, Toru; Matsuda, Toshiaki; Matsumoto, Hiroshi; et al.

JAERI-M 87-096, 10 Pages, 1987/07

JAERI-M-87-096.pdf:0.39MB

no abstracts in English

Journal Articles

Regime of improved confinement in neutral-beam-heated limiter discharges of a tokamak

Sengoku, Seio; ; Hasegawa, Mitsuru; Hoshino, Katsumichi; Kasai, Satoshi; Kawakami, Tomohide; Kawashima, Hisato; Matoba, Toru; Matsuda, Toshiaki; Matsumoto, Hiroshi; et al.

Physical Review Letters, 59(4), p.450 - 453, 1987/00

 Times Cited Count:48 Percentile:88(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Behaviour of the peripheral electron temperature at the H-transition observed on the JFF-2M tokamaku

Hoshino, Katsumichi; Odajima, Kazuo; Yamamoto, Takumi; Suzuki, Norio; Kawashima, Hisato; Yamauchi, Toshihiko; Uesugi, Yoshihiko; Kasai, Satoshi; Kawakami, Tomohide; Maeda, Hikosuke; et al.

Physics Letters A, 124(4-5), p.299 - 302, 1987/00

 Times Cited Count:7 Percentile:55.11(Physics, Multidisciplinary)

no abstracts in English

Oral presentation

Single crystal growth and characterization of strongly correlated plutonium compounds

Haga, Yoshinori; Yamamoto, Etsuji; Tateiwa, Naoyuki; Matsuda, Tatsuma; Matsumoto, Yuji; Nakajima, Kunihisa; Sato, Takumi; Arai, Yasuo; Onuki, Yoshichika; Homma, Yoshiya*; et al.

no journal, , 

no abstracts in English

Oral presentation

Trend of $$^{137}$$Cs concentration in river water following the Fukushima nuclear accident in FY 2015-2017

Nakanishi, Takahiro; Katayose, Yuji*; Osotsuka, Koji*; Haginoya, Takumi*; Matsumoto, Takumi*

no journal, , 

A large amount of radiocesium emitted from the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident was deposited in terrestrial areas. It is therefore important to determine the quantity of radiocesium transported from these areas by hydrological processes to predict the future contamination status and propose effective countermeasures to reduce exposure. In this paper, we report the trend of the radiocesium concentration in 2 rivers nearby FDNPP and discuss the environmental factors on behavior of radiocesium.

Oral presentation

Concentrations and emission source estimation of unreported harmful elements in combined sewer water during the dry and wet periods in Kooriyama, Fukushima

Ozaki, Hirokazu*; Yoshimura, Kazuya; Katayose, Yuji*; Matsumoto, Takumi*; Asaoka, Yoshihiro*; Hayashi, Seiji*

no journal, , 

no abstracts in English

Oral presentation

Concentrations of heavy metals in combined sewer water drained from urban area in Koriyama, Fukushima

Ozaki, Hirokazu*; Hayashi, Seiji*; Yoshimura, Kazuya; Katayose, Yuji*; Matsumoto, Takumi*; Asaoka, Yoshihiro*

no journal, , 

no abstracts in English

13 (Records 1-13 displayed on this page)
  • 1