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Keiichi Ohta
Observed names:
K. Ohta,
KEIICHI OHTA,
Keiichi OHTA
Institution:
University of Shiga Prefecture
Observed institutions:
Yamagata University,
Shizuoka University,
University of Shiga Prefecture,
University of Shizuoka,
University of California, Los Angeles,
National Taiwan University,
Shiga University,
Nagoya University
show all 8
OpenAlex ID:
A5108368097
Determination of Hydroxyl Radical Photoproduction Rates in Natural Waters
2004
·
Kazuhiko Takeda
, Hiroshi Takedoi
, et al.
·
Analytical Sciences
·
151
Biomarker signature in tropical wetland: lignin phenol vegetation index (LPVI) and its implications for reconstructing the paleoenvironment
2004
·
Shafi M Tareq
, Noriyuki Tanaka
, et al.
·
The Science of The Total Environment
·
127
The role of climate variability in the inter-annual variation of terrestrial net primary production (NPP)
2004
·
M.A.A. Mohamed
, I.S. Babiker
, et al.
·
The Science of The Total Environment
·
107
Lignin biomarker and isotopic records of paleovegetation and climate changes from Lake Erhai, southwest China, since 18.5kaBP
2010
·
Shafi M. Tareq
, Hiroyuki Kitagawa
, et al.
·
Quaternary International
·
63
Hydrocarbon and elemental carbon signatures in a tropical wetland: Biogeochemical evidence of forest fire and vegetation changes
2005
·
Shafi M. Tareq
, Eiichiro Tanoue
, et al.
·
Chemosphere
·
47
Characteristics and role of groundwater dissolved organic matter on arsenic mobilization and poisoning in Bangladesh
2013
·
Shafi M. Tareq
, Masahiro Maruo
, et al.
·
Physics and Chemistry of the Earth Parts A/B/C
·
42
Unified capillary chromatography
1988
·
D. Ishii
, T. Niwa
, et al.
·
Journal of High Resolution Chromatography
·
33
Diurnal and seasonal variations in isoprene emission from live oak.
1986
·
Keiichi Ohta
·
GEOCHEMICAL JOURNAL
·
33
PDF
Justicidin A and B, the fish-killing components of var.
1965
·
Katsura Munakata
, Shingo Marumo
, et al.
·
Tetrahedron Letters
·
33
Diurnal Variations of Carbon Monoxide Concentration in the Equatorial Pacific Upwelling Region
1997
·
Keiichi Ohta
·
Journal of Oceanography
·
32
Sources of sulfate in winter aerosols over the Sea of Japan, as inferred from selenium composition
2003
·
Masako Kagawa
, Yutaka Ishizaka
, et al.
·
Atmospheric Environment
·
30
Halogenated sesquiterpenes from the marine red alga Marginisporum aberrans
1977
·
Keiichi Ohta
, Makiko Takagi
·
Phytochemistry
·
27
Justicidin C and D, the 1-methoxy-2,3-naphthalide lignans, isolated from L.
1970
·
Keiichi Ohta
, Katsura Munakata
·
Tetrahedron Letters
·
26
Pyrolysis of wood specimens with and without minerals: implications to lignin diagenesis
1992
·
K. Ohta
, M. I. Venkatesan
·
Energy & Fuels
·
25
Emission of hexenol from higher plants.
1984
·
Keiichi Ohta
·
GEOCHEMICAL JOURNAL
·
24
PDF
Trends and factors governing polycyclic aromatic hydrocarbon levels in Tokyo Bay sediments
1983
·
Keiichi Ohta
, Nobuhiko Handa
, et al.
·
Geochimica et Cosmochimica Acta
·
23
Antimicrobial compounds of the marine red alga Marginisporum aberrans
1977
·
Keiichi Ohta
, Makiko Takagi
·
Phytochemistry
·
23
The synthesis of justicidin B and related compounds
1967
·
Katsura Munakata
, Shingo Marumo
, et al.
·
Tetrahedron Letters
·
21
Isolation and characterization of low molecular weight carbohydrates dissolved in seawater
1985
·
Hiroshi Sakugawa
, Nobuhiko Handa
, et al.
·
Marine Chemistry
·
19
Temperature programming elution in capillary supercritical fluid chromatography
1988
·
T. Takeuchi
, K. Ohta
, et al.
·
Chromatographia
·
18
Concentrations and source variations of n-alkanes in a 21 m ice core and snow samples at Belukha glacier, Russian Altai mountains
2006
·
Takayuki Miyake
, Fumio Nakazawa
, et al.
·
Annals of Glaciology
·
17
PDF
Phyllospadine,a new flavonoidal alkaloid from the sea-grass Phyllosphadix iwatensis.
1980
·
Makiko TAKAGI
, Saburo FUNAHASHI
, et al.
·
Agricultural and Biological Chemistry
·
17
PDF
Diagenetic trends of lignin phenols in Mahakam Delta coals: correlation between laboratory thermal maturation and natural samples
1993
·
M.I. Venkatesan
, K. Ohta
, et al.
·
Organic Geochemistry
·
16
Antimicrobial compounds in the marine red alga Beckerella subcostatum.
1977
·
Keiichi OHTA
·
Agricultural and Biological Chemistry
·
12
PDF
Photochemical Degradation of Dissolved Organic Carbon to Carbon Monoxide in Coastal Seawater
2000
·
Keiichi Ohta
, Yayoi Inomata
, et al.
·
Ocean sciences research
·
9
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Works count:
57
Citation count:
1,069
H-index:
19
I10-index:
24
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