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Takuya Manaka

Explore the profile of Takuya Manaka including associated specialties, affiliations and a list of published articles. Areas
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Articles 6
Citations 16
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Recent Articles
1.
Sakashita W, Manaka T, Tsuneoka R, Sakata T, Imamura N, Nagakura J, et al.
J Environ Radioact . 2025 Mar; 284:107653. PMID: 40037134
To accurately predict long-term Cs activity concentrations in stem wood, it is crucial to assess whether the Cs cycle in forests has reached quasi-equilibrium between trees and forest soil. A...
2.
Manaka T, Araki M, Ohashi S, Imamura N, Sakashita W, Ogo S, et al.
Sci Rep . 2023 Jun; 13(1):9144. PMID: 37277410
Radiocesium (Cs) released in the Fukushima Dai-ichi Nuclear Power Plant accident is still cycling in the forest ecosystem. We examined the mobility of Cs in the external parts-leaves/needles, branches, and...
3.
Manaka T, Komatsu M, Sakashita W, Imamura N, Hashimoto S, Hirai K, et al.
J Environ Radioact . 2022 Aug; 251-252:106967. PMID: 35930867
To elucidate interannual changes in the vertical distribution of Cs in forest ecosystems contaminated by the Fukushima Dai-ichi Nuclear Power Plant accident, we investigated Cs inventories in forest soils (both...
4.
Hashimoto S, Tanaka T, Komatsu M, Gonze M, Sakashita W, Kurikami H, et al.
J Environ Radioact . 2021 Sep; 238-239:106721. PMID: 34509097
Forests cover approximately 70% of the area contaminated by the Fukushima Daiichi Nuclear Power Plant accident in 2011. Following this severe contamination event, radiocaesium (Cs) is anticipated to circulate within...
5.
Imamura N, Watanabe M, Manaka T
Sci Total Environ . 2020 Oct; 755(Pt 2):142478. PMID: 33045609
Japanese cedar (Cryptomeria japonica) is the main timber species in Japan. The prediction of the temporal changes in the Cs concentration in the stemwood of Japanese cedar after the Fukushima...
6.
Manaka T, Ono K, Furusawa H, Ogo S, Miura S
J Environ Radioact . 2020 Jul; 220-221:106306. PMID: 32658642
To investigate how radiocesium (Cs) is retained in the O horizon via interactions with organic matter, we collected O horizon samples in Japanese cedar (Cryptomeria japonica) and konara oak (Quercus...
7.
Manaka T, Imamura N, Kaneko S, Miura S, Furusawa H, Kanasashi T
J Environ Radioact . 2019 Mar; 203:84-92. PMID: 30875530
We investigated the changes in Cs exchangeable fraction in the soils of contaminated forest ecosystems until 6 years after the Fukushima radioactive atmospheric deposits. For this investigation, we performed chemical...