Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Ken'ichi Osaka"'
Publikováno v:
Journal of Geography (Chigaku Zasshi). 132:183-196
Publikováno v:
Limnology and Oceanography: Methods. 20:1-14
Publikováno v:
Hydrological Processes. 36
Autor:
Ayano Medo, Kazuho Funakawa, Naoko Matsuo, Fujio Hyodo, Ken'ichi Osaka, Chikage Yoshimizu, Riyo Hirasawa, Keisuke Koba, Yugo Seko, Keitaro Fukushima, Yuji Onishi, Nanako O. Ogawa, Kei Kinoshita
Publikováno v:
RADIOISOTOPES. 70:291-299
Autor:
Masayuki Itoh, Ken'ichi Osaka, Kotaro Iizuka, Yoshiko Kosugi, Marryanna Lion, Satomi Shiodera
Publikováno v:
The Science of the total environment. 859(Pt 2)
Land conversion from natural forests to plantations (e.g., oil palm) in Southeast Asia is one of the most intensive land-use changes occurring worldwide. To clarify the effects of oil palm plantations on water quality, we conducted multipoint river a
Autor:
Masanori Akashi, Jun’ichiro Ide, Abigail P. Cid-Andres, Noboru Okuda, Takuya Ishida, Ichiro Tayasu, Takuya Hayashi, Ken'ichi Osaka, Adina Paytan, Tomoya Iwata
Publikováno v:
Limnology. 21:365-377
We compared the oxygen isotope ratio of dissolved phosphate $$\left( {\delta^{{{18}}} {\text{O}}_{{{\text{PO}}_{{4}} }} } \right)$$ in two rivers with different land-cover and geological features (Ado River and Yasu River) within Lake Biwa basin, cen
Publikováno v:
SC10201902060008
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Quantitative evaluation of denitrification by the dual isotope approach, which measures the stable isotope ratios of nitrogen (δ15N) and oxygen (δ18O) in nitrate, has been hampered by the wide rang...
Autor:
Abigail P. Cid-Andres, Noboru Okuda, Irisse Bianca Baldovino De Jesus, Chia-Ying Ko, Ellis Mika C. Triño, Satoshi Asano, Tohru Ikeya, Elfritzson Martin Peralta, Ichiro Tayasu, Jun’ichiro Ide, Tomoya Iwata, Ken'ichi Osaka, Adina Paytan, Osbert Leo A. Privaldos, Yoshitoshi Uehara, Takuya Ishida
Publikováno v:
Environmental sciencetechnology. 53(9)
Identifying nonpoint phosphorus (P) sources in a watershed is essential for addressing cultural eutrophication and for proposing best-management solutions. The oxygen isotope ratio of phosphate (δ1...
Publikováno v:
Journal of Geophysical Research: Biogeosciences. 121:2030-2048
To determine the availability of atmospheric NO3− deposition on forested ecosystems and to understand the interaction between the nitrogen cycle in a forest ecosystem and atmospheric nitrogen input/output, we quantitatively evaluated the atmospheri
Autor:
Jamsran Tsogtbaatar, Osamu Nagafuchi, Ken'ichi Osaka, Kanji Okano, Koyomi Nakazawa, Etsuji Hamabata, Javzan Choijil
Publikováno v:
Journal of Water and Health. 14:1009-1018
Thirty-nine groundwater samples were collected from wells near the Tavan Tolgoi and Oyu Tolgoi mines in Mongolia and at a relatively pristine site in northern Mongolia during August to September 2013, and analyzed for the concentrations of F−, NO3