Zobrazeno 1 - 10 of 30 pro vyhledávání: '"Taku Koyanagi"'
3
Concentration factors for 137Cs in Japanese coastal fish (1984-1990)
Autor: Taku Koyanagi, Yutaka Tateda
Publikováno v: Journal of radiation research. 37(2)
Concentration factors (CFs; Bq kg-1 in wet fish muscle/Bq kg-1 in filtered seawater) for 137Cs were determined in Japanese coastal fish collected from 1984 to 1990. 137Cs/Cs (stable) atom ratios were also examined to clarify the distribution equilibr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66881d30f6a85bac7945f334d795f64c
https://pubmed.ncbi.nlm.nih.gov/8840718
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4
Concentration factors for Cs-137 in marine algae from Japanese coastal waters
Autor: Taku Koyanagi, Yutaka Tateda
Publikováno v: Journal of radiation research. 35(4)
Concentration factors (CF: Bq.kg-1 in wet algae/Bq.kg-1 in filtered seawater) for Cs-137 in Japanese coastal algae, were investigated during 1984-1990. Cs-137/Cs(stable) atom ratios were also examined to clarify the distribution equilibrium of Cs-137
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eec96f42af2e18554d5160fe1c6e4473
https://pubmed.ncbi.nlm.nih.gov/7752105
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5
Accumulation of iron-59 by black-fish Girella punctata from food organisms
Autor: Yutaka Tateda, Shigeki Hirano, Taku Koyanagi
Publikováno v: NIPPON SUISAN GAKKAISHI. 51:2067-2072
The retention and excretion by black-fish Girella punctata, of 59Fe taken up from seawater or food organisms were observed by tracer experiment. The highest concentration factor was shown by the seaweed, Enteromorpha sp. among the prey and predator o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4cba41575dd92cf215ce12282dcb6af9
https://doi.org/10.2331/suisan.51.2067
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7
High accumulation of elements in the kidney of the marine bivalve Cyclosunetta menstrualis
Autor: Masako Hara, Toshiaki Ishii, Taku Koyanagi, M. Ishikawa, Tsuguo Otake, Kunio Ikuta
Publikováno v: NIPPON SUISAN GAKKAISHI. 52:147-154
Distribution of eighteen elements in the soft part of the marine bivalve Cyclosunetta menstrualis was examined by means of inductively coupled plasma atomic emission spectroscopy, atomic absorption spectrophotometry, and electron probe X-ray microana
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0cfc326f26a7252a5f9d4211ce2ccaba
https://doi.org/10.2331/suisan.52.147
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9
Accumulation and excretion of Cobalt-60 taken up from seawater by marine fishes
Autor: Toshiaki Ishii, Taku Koyanagi, Motokazu Nakahara, Shigeki Hirano
Publikováno v: NIPPON SUISAN GAKKAISHI. 45:1423-1428
The accumulatio and excretion of 60Co taken up from seawater were observed using marine fishes to examine the radioactive pollution of marine organisms. Blood, internal medium was a good reserving pool of the nuclide in the fishes and it accumulated
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::98adeca2d2db2ce551c1bea4ed1bd225
https://doi.org/10.2331/suisan.45.1423
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10
Study on the chemical forms of radionuclides in seawater—I
Autor: Shigeki Hirano, Taku Koyanagi
Publikováno v: Journal of the Oceanographical Society of Japan. 34:269-275
The stability constants for sulfate, chloride and hydroxide ions with cerium (III) in the solution at ionic strength of 0.67 have been determined by cation exchange method, the values ofΒ1 andΒ2 for sulfate complexes of cerium being 40±13 and 453
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::50334ddf522b52400329b7549d537db7
https://doi.org/10.1007/bf02111174
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