YOSHIDA Naohiro

J-GLOBAL         Last updated: Nov 8, 2018 at 13:21
 
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Name
YOSHIDA Naohiro
Affiliation
Tokyo Institute of Technology
Section
School of Materials and Chemical Technology
Job title
Professor
Degree
Doctor of Science(Tokyo Institute of Technology)
Other affiliation
Tokyo Institute of Technology
Research funding number
60174942

Research Areas

 
 

Academic & Professional Experience

 
1983
   
 
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1984
   
 
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1993
   
 
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1994
   
 
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1998
   
 
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Education

 
 
 - 
1983
Graduate School, Division of Science and Engineering, Tokyo Institute of Technology
 

Committee Memberships

 
2006
 - 
2008
Member of the Science Council of Japan (2006-2008)
 
2004
 - 
2007
Program officer at Japan Society for the Promotion of Science (JSPS) (2004-2007)
 
2004
 - 
2008
Editor of Geophysical Research Letters (2004-2008)
 
2004
   
 
American Geophysical Union  Editor of GRL
 
2001
   
 
European Geosciences Union  Editor of Atmospheric Chemistry and Physics
 

Awards & Honors

 
2009
Geochemical Society of Japan Award, Geochemical Society of Japan
 
2005
12th Nissan Science Award
 

Published Papers

 
T. O. Sato, K. Kuribayashi, N. Yoshida, Y. Kasai
DIURNAL VARIATION IN OZONE ISOTOPE      Jun 2017   [Refereed]
Annie Bourbonnais, Robert T. Letscher, Hermann W. Bange, Vincent {É}chevin, Jennifer Larkum, Joachim Mohn, Naohiro Yoshida, Mark A. Altabet
N2 O Production and Consumption off Peru      Apr 2017   [Refereed]
Sakae Toyoda, Naohiro Yoshida, Shinji Morimoto, Shuji Aoki, Takakiyo Nakazawa, Satoshi Sugawara, Shigeyuki Ishidoya, Mitsuo Uematsu, Yoichi Inai, Fumio Hasebe, Chusaku Ikeda, Hideyuki Honda, Kentaro Ishijima
Atmospheric Chemistry and Physics Discussions   1   Apr 2017   [Refereed]
Sakiko Ishino, Shohei Hattori, Joel Savarino, Bruno Jourdain, Susanne Preunkert, Michel Legrand, Nicolas Caillon, Albane Barbero, Kota Kuribayashi, Naohiro Yoshida
Atmospheric Chemistry and Physics   17(5) 3713   Mar 2017   [Refereed]
Sakiko Ishino, Shohei Hattori, Joel Savarino, Bruno Jourdain, Susanne Preunkert, Michel Legrand, Nicolas Caillon, Albane Barbero, Kota Kuribayashi, Naohiro Yoshida
Atmospheric Chemistry and Physics Discussions   1   Oct 2016   [Refereed]
Ghosh Prosenjit, Vasiliev Mikhail V, Ghosh Parthasarathi, Sarkar Soumen, Ghosh Sampa, Yamada Keita, Ueno Yuichiro, Yoshida Naohiro, Poulsen Christopher J.
Scientific Reports   6    2016   [Refereed]
Kamezaki Kazuki, Hattori Shohei, Ogawa Takahiro, Toyoda Sakae, Kato Hiromi, Katayama Yoko, Yoshida Naohiro
Environmental Science & Technology   50(7) 3537-3544   2016   [Refereed]
Ali Muhammad, Rathnayake Rathnayake M. L. D, Zhang Lei, Ishii Satoshi, Kindaichi Tomonori, Satoh Hisashi, Toyoda Sakae, Yoshida Naohiro, Okabe Satoshi
Water Research   102 147-157   2016   [Refereed]
Mohn Joachim, Gutjahr Wilhelm, Toyoda Sakae, Harris Eliza, Ibraim Erkan, Geilmann Heike, Schleppi Patrick, Kuhn Thomas, Lehmann Moritz F, Decock Charlotte, Werner Roland A, Yoshida Naohiro, Brand Willi A.
Rapid Communications in Mass Spectrometry   30(23) 2487-2496   2016   [Refereed]
Gilbert Alexis, Yamada Keita, Suda Konomi, Ueno Yuichiro, Yoshida Naohiro
Geochimica Et Cosmochimica Acta   177 205-216   2016   [Refereed]
Yamada Keita, Ohishi Kazuki, Gilbert Alexis, Akasaka Mai, Yoshida Naohiro, Yoshimura Ryoko
Analytical and Bioanalytical Chemistry   408(6) 1597-1607   2016   [Refereed]
Tumendelger Azzaya, Toyoda Sakae, Yoshida Naohiro, Shiomi Hiroshi, Kouno Rina
Geochemical Journal   50(2) 105-121   2016   [Refereed]
Maeda Koki, Toyoda Sakae, Yano Midori, Hattori Shohei, Fukasawa Makoto, Nakajima Keiichi, Yoshida Naohiro
Biogeosciences   13(4) 1341-1349   2016   [Refereed]
Yoshikawa Chisato, Abe Hitomi, Aita Maki N, Breider Florian, Kuzunuki Keichi, Toyoda Sakae, Ogawa Nanako O, Suga Hisami, Ohkouchi Naohiko, Danielache Sebastian O, Wakita Masahide, Honda Makio C, Yoshida Naohiro
Journal of Oceanography   72(3) 491-508   2016   [Refereed]
Wenk Christine B, Frame Caitlin H, Koba Keisuke, Casciotti Karen L, Veronesi Mauro, Niemann Helge, Schubert Carsten J, Yoshida Naohiro, Toyoda Sakae, Makabe Akiko, Zopfi Jakob, Lehmann Moritz F.
Limnology and Oceanography   61(5) 1735-1749   2016   [Refereed]
Toyoda Sakae, Yoshida Naohiro
Atmospheric Measurement Techniques   9(5) 2093-2101   2016   [Refereed]
Hattori Shohei, Savarino Joel, Kamezaki Kazuki, Ishino Sakiko, Dyckmans Jens, Fujinawa Tamaki, Caillon Nicolas, Barbero Albane, Mukotaka Arata, Toyoda Sakae, Well Reinhard, Yoshida Naohiro
Rapid Communications in Mass Spectrometry   30(24) 2635-2644   2016   [Refereed]
Sato Hisatoshi, Tahata Miyuki, Sawaki Yusuke, Maruyama Shigenori, Yoshida Naohiro, Shu Degan, Han Jian, Li Yong, Komiya Tsuyoshi
Geoscience Frontiers   7(4) 663-671   2016   [Refereed]
Tahata Miyuki, Sawaki Yusuke, Ueno Yuichiro, Nishizawa Manabu, Yoshida Naohiro, Ebisuzaki Toshikazu, Komiya Tsuyoshi, Maruyama Shigenori
Geoscience Frontiers   6(1) 121-136   2015   [Refereed]
Tahata Miyuki, Sawaki Yusuke, Ueno Yuichiro, Nishizawa Manabu, Yoshida Naohiro, Ebisuzaki Toshikazu, Komiya Tsuyoshi, Maruyama Shigenori
Geoscience Frontiers   6(1) 121-136   2015   [Refereed]
Tahata Miyuki, Sawaki Yusuke, Yoshiya Kazumi, Nishizawa Manabu, Komiya Tsuyoshi, Hirata Takafumi, Yoshida Naohiro, Maruyama Shigenori, Windley Brian F.
Precambrian Research   263 19-42   2015   [Refereed]
Zou Yun, Hirono Yuhei, Yanai Yosuke, Hattori Shohei, Toyoda Sakae, Yoshida Naohiro
Rapid Communications in Mass Spectrometry   29(9) 891-900   2015   [Refereed]
Diomande Didier G, Martineau Estelle, Gilbert Alexis, Nun Pierrick, Murata Ariaki, Yamada Keita, Watanabe Naoharu, Tea Illa, Robins Richard J, Yoshida Naohiro, Remaud Gerald S.
Analytical Chemistry   87(13) 6600-6606   2015   [Refereed]
Endo Yoshiaki, Danielache Sebastian O, Ueno Yuichiro, Hattori Shohei, Johnson Matthew S, Yoshida Naohiro, Kjaergaard Henrik G.
Journal of Geophysical Research-Atmospheres   120(6) 2546-2557   2015   [Refereed]
Breider Florian, Yoshikawa Chisato, Abe Hitomi, Toyoda Sakae, Yoshida Naohiro
Global Biogeochemical Cycles   29(7) 1014-1027   2015   [Refereed]
Yoshikawa Chisato, Makabe Akiko, Shiozaki Takuhei, Toyoda Sakae, Yoshida Osamu, Furuya Ken, Yoshida Naohiro
Geochemistry Geophysics Geosystems   16(5) 1439-1448   2015   [Refereed]
Maeda Koki, Spor Ayme, Edel-Hermann Veronique, Heraud Cecile, Breuil Marie-Christine, Bizouard Florian, Toyoda Sakae, Yoshida Naohiro, Steinberg Christian, Philippot Laurent
Scientific Reports   5    2015   [Refereed]
Nunoura Takuro, Takaki Yoshihiro, Hirai Miho, Shimamura Shigeru, Makabe Akiko, Koide Osamu, Kikuchi Tohru, Miyazaki Junichi, Koba Keisuke, Yoshida Naohiro, Sunamura Michinari, Takai Ken
Proceedings of the National Academy of Sciences of the United States of America   112(11) E1230-E1236   2015   [Refereed]
Hattori Shohei, Toyoda Akari, Toyoda Sakae, Ishino Sakiko, Ueno Yuichiro, Yoshida Naohiro
Analytical Chemistry   87(1) 477-484   2015   [Refereed]
Ueno Yuichiro, Danielache Sebastian, Yoshida Naohiro
Origins of Life and Evolution of Biospheres   45(3) 371-374   2015   [Refereed]
Nimmanwudipong Tarin, Gilbert Alexis, Yamada Keita, Yoshida Naohiro
Rapid Communications in Mass Spectrometry   29(24) 2337-2340   2015   [Refereed]
Sato T. O, Sagawa H, Yoshida N, Kasai Y.
Atmospheric Measurement Techniques   7(4) 941-958   2014   [Refereed]
Ishikawa Tomoko, Ueno Yuichiro, Shu Degan, Li Yong, Han Jian, Guo Junfeng, Yoshida Naohiro, Maruyama Shigenori, Komiya Tsuyoshi
Gondwana Research   25(3) 1045-1056   2014   [Refereed]
Suda Konomi, Ueno Yuichiro, Yoshizaki Motoko, Nakamura Hitomi, Kurokawa Ken, Nishiyama Eri, Yoshino Koji, Hongoh Yuichi, Kawachi Kenichi, Omori Soichi, Yamada Keita, Yoshida Naohiro, Maruyama Shigenori
Earth and Planetary Science Letters   401 376-377   2014   [Refereed]
Suda Konomi, Ueno Yuichiro, Yoshizaki Motoko, Nakamura Hitomi, Kurokawa Ken, Nishiyama Eri, Yoshino Koji, Hongoh Yuichi, Kawachi Kenichi, Omori Soichi, Yamada Keita, Yoshida Naohiro, Maruyama Shigenori
Earth and Planetary Science Letters   386 112-125   2014   [Refereed]
Yamada Kentaro, Ueno Yuichiro, Yamada Keita, Komiya Tsuyoshi, Han Jian, Shu Degan, Yoshida Naohiro, Maruyama Shigenori
Gondwana Research   25(3) 1108-1119   2014   [Refereed]
Yoshikawa Chisato, Hayashi Elena, Yamada Keita, Yoshida Osamu, Toyoda Sakae, Yoshida Naohiro
Chemical Geology   382 24-31   2014   [Refereed]
Yamazaki T, Hozuki T, Arai K, Toyoda S, Koba K, Fujiwara T, Yoshida N.
Biogeosciences   11(10) 2679-2689   2014   [Refereed]
Yano Midori, Toyoda Sakae, Tokida Takeshi, Hayashi Kentaro, Hasegawa Toshihiro, Makabe Akiko, Koba Keisuke, Yoshida Naohiro
Soil Biology & Biochemistry   70 66-78   2014   [Refereed]
Zou Yun, Hirono Yuhei, Yanai Yosuke, Hattori Shohei, Toyoda Sakae, Yoshida Naohiro
Soil Biology & Biochemistry   77 276-291   2014   [Refereed]
Tumendelger Azzaya, Toyoda Sakae, Yoshida Naohiro
Rapid Communications in Mass Spectrometry   28(17) 1883-1892   2014   [Refereed]
Mohn Joachim, Wolf Benjamin, Toyoda Sakae, Lin Cheng-Ting, Liang Mao-Chang, Brueggemann Nicolas, Wissel Holger, Steiker Amy E, Dyckmans Jens, Szwec Lars, Ostrom Nathaniel E, Casciotti Karen L, Forbes Matthew, Giesemann Anette, Well Reinhard, Doucett Richard R, Yarnes Chris T, Ridley Anna R, Kaiser Jan, Yoshida Naohiro
Rapid Communications in Mass Spectrometry   28(18) 1995-2007   2014   [Refereed]
Kawagucci Shinsuke, Kobayashi Mariko, Hattori Shohei, Yamada Keita, Ueno Yuichiro, Takai Ken, Yoshida Naohiro
Geochimica Et Cosmochimica Acta   142 601-614   2014   [Refereed]
Yamada Keita, Kikuchi Makiko, Gilbert Alexis, Yoshida Naohiro, Wasano Nariaki, Hattori Ryota, Hirano Satoshi
Rapid Communications in Mass Spectrometry   28(16) 1821-1828   2014   [Refereed]
Yamada Keita, Gilbert Alexis, Yoshida Naohiro
Bunseki Kagaku   63(3) 195-203   2014   [Refereed]
Yamada Keita, Gilbert Alexis, Yoshida Naohiro
Bunseki Kagaku   63(3) 195-203   2014   [Refereed]
Haraguchi Hiroyuki, Yamada Keita, Miyashita Rumiko, Aida Kazuhiko, Ohnishi Masao, Gilbert Alexis, Yoshida Naohiro
Journal of Oleo Science   63(12) 1283-1291   2014   [Refereed]
Bayle Kevin, Gilbert Alexis, Julien Maxime, Yamada Keita, Silvestre Virginie, Robins Richard J, Akoka Serge, Yoshida Naohiro, Remaud Gerald S.
Analytica Chimica Acta   846 1-7   2014   [Refereed]
Saitoh Masafumi, Isozaki Yukio, Yao Jianxin, Ji Zhansheng, Ueno Yuichiro, Yoshida Naohiro
Global and Planetary Change   105 180-192   2013   [Refereed]
Kato Tomomichi, Yamada Keita, Tang Yanhong, Yoshida Naohiro, Wada Eitaro
Atmospheric Environment   77 338-347   2013   [Refereed]
Rathnayake R. M. L. D, Song Y, Tumendelger A, Oshiki M, Ishii S, Satoh H, Toyoda S, Yoshida N, Okabe S.
Water Research   47(19) 7078-7086   2013   [Refereed]
Chaintreau Alain, Fieber Wolfgang, Sommer Horst, Gilbert Alexis, Yamada Keita, Yoshida Naohiro, Pagelot Alain, Moskau Detlef, Moreno Aitor, Schleucher Juergen, Reniero Fabiano, Holland Margaret, Guillou Claude, Silvestre Virginie, Akoka Serge, Remaud Gerald S.
Analytica Chimica Acta   788 108-113   2013   [Refereed]
Hattori Shohei, Schmidt Johan A, Johnson Matthew S, Danielache Sebastian O, Yamada Akinori, Ueno Yuichiro, Yoshida Naohiro
Proceedings of the National Academy of Sciences of the United States of America   110(44) 17656-17661   2013   [Refereed]
Murata Ariaki, Engelhardt Ulrich H, Fleischmann Peter, Yamada Keita, Yoshida Naohiro, Juchelka Dieter, Hilkert Andreas, Ohnishi Toshiyuki, Watanabe Naoharu, Winterhalter Peter
Journal of Agricultural and Food Chemistry   61(47) 11321-11325   2013   [Refereed]
Yoshida Naohiro, Vasilev Mikhail, Ghosh Prosenjit, Abe Osamu, Yamada Keita, Morimoto Maki
Rapid Communications in Mass Spectrometry   27(1) 207-215   2013   [Refereed]
Mukotaka Arata, Toyoda Sakae, Yoshida Naohiro, Well Reinhard
Rapid Communications in Mass Spectrometry   27(21) 2391-2398   2013   [Refereed]
Schmidt J. A, Johnson M. S, Hattori S, Yoshida N, Nanbu S, Schinke R.
Atmospheric Chemistry and Physics   13(3) 1511-1520   2013   [Refereed]
Nishizawa Manabu, Koba Keisuke, Makabe Akiko, Yoshida Naohiro, Kaneko Masanori, Hirao Shingo, Ishibashi Jun-ichiro, Yamanaka Toshiro, Shibuya Takazo, Kikuchi Tohru, Hirai Miho, Miyazaki Junichi, Nunoura Takuro, Takai Ken
Geochimica Et Cosmochimica Acta   113 152-173   2013   [Refereed]
Maeda Koki, Hanajima Dai, Morioka Riki, Toyoda Sakae, Yoshida Naohiro, Osada Takashi
Soil Science and Plant Nutrition   59(1) 96-106   2013   [Refereed]
Saitoh Masafumi, Isozaki Yukio, Ueno Yuichiro, Yoshida Naohiro, Yao Jianxin, Ji Zhansheng
Journal of Asian Earth Sciences   67-68 51-62   2013   [Refereed]
Kato Tomomichi, Toyoda Sakae, Yoshida Naohiro, Tang Yanhong, Wada Eitaro
Rapid Communications in Mass Spectrometry   27(13) 1517-1526   2013   [Refereed]
Ishikawa Tomoko, Ueno Yuichiro, Shu Degan, Li Yong, Han Jian, Guo Junfeng, Yoshida Naohiro, Komiya Tsuyoshi
Precambrian Research   225 190-208   2013   [Refereed]
Kawagucci Shinsuke, Ueno Yuichiro, Takai Ken, Toki Tomohiro, Ito Michihiro, Inoue Kazuhiro, Makabe Akiko, Yoshida Naohiro, Muramatsu Yasuyuki, Takahata Naoto, Sano Yuji, Narita Taku, Teranishi Genta, Obata Hajime, Nakagawa Satoshi, Nunoura Takuro, Gamo Toshitaka
Chemical Geology   339 213-225   2013   [Refereed]
Gilbert Alexis, Yamada Keita, Yoshida Naohiro
Organic Geochemistry   62 56-61   2013   [Refereed]
Fujii Ayako, Toyoda Sakae, Yoshida Osamu, Watanabe Shuichi, Sasaki Ken'ichi, Yoshida Naohiro
Journal of Oceanography   69(2) 147-157   2013   [Refereed]
Priyadarshi Antra, Hill-Falkenthal Jason, Thiemens Mark H, Yoshida Naohiro, Toyoda Sakae, Yamada Keita, Mukotaka Arata, Fujii Ayako, Uematsu Mitsuo, Hatakeyama Shiro, Noguchi Izumi, Nojiri Yukihiro, Tanimoto Hiroshi
Journal of Geophysical Research-Atmospheres   118(2) 1020-1027   2013   [Refereed]
Maeda Koki, Toyoda Sakae, Hanajima Dai, Yoshida Naohiro
Journal of Hazardous Materials   248 329-336   2013   [Refereed]
Shibuya Takazo, Tahata Miyuki, Ueno Yuichiro, Komiya Tsuyoshi, Takai Ken, Yoshida Naohiro, Maruyama Shigenori, Russell Michael J.
Precambrian Research   236 59-64   2013   [Refereed]
Toyoda Sake, Kuroki Natsuko, Yoshida Naohiro, Ishijima Kentaro, Tohjima Yasunori, Machida Toshinobu
Journal of Geophysical Research-Atmospheres   118(8) 3369-3381   2013   [Refereed]
Tahata Miyuki, Ueno Yuichiro, Ishikawa Tomoko, Sawaki Yusuke, Murakami Kazuki, Han Jian, Shu Degan, Li Yong, Guo Junfeng, Yoshida Naohiro, Komiya Tsuyoshi
Gondwana Research   23(1) 333-353   2013   [Refereed]
Gilbert Alexis, Yamada Keita, Yoshida Naohiro
Analytical Chemistry   85(14) 6566-6570   2013   [Refereed]
Yoshida N, Kanda J.
Science   336(6085) 1115-1116   2012   [Refereed]
Yoshida N, Kanda J.
Science   336(6085) 1115-1116   2012   [Refereed]
Koba K, Fang Y. T, Mo J. M, Zhang W, Lu X. K, Liu L, Zhang T, Takebayashi Y, Toyoda S, Yoshida N, Suzuki K, Yoh M, Senoo K.
Journal of Geophysical Research-Biogeosciences   117    2012   [Refereed]
Koba K, Fang Y. T, Mo J. M, Zhang W, Lu X. K, Liu L, Zhang T, Takebayashi Y, Toyoda S, Yoshida N, Suzuki K, Yoh M, Senoo K.
Journal of Geophysical Research-Biogeosciences   117    2012   [Refereed]
Tsuji Kiyoshi, Teshima Hiroaki, Sasada Hiroyuki, Yoshida Naohiro
Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy   98 43-46   2012   [Refereed]
Ohte Nobuhito, Tayasu Ichiro, Kohzu Ayato, Yoshimizu Chikage, Osaka Ken'ichi, Makabe Akiko, Koba Keisuke, Yoshida Naohiro, Nagata Toshi
Water Resources Research   48    2012   [Refereed]
Mohn J, Tuzson B, Manninen A, Yoshida N, Toyoda S, Brand W. A, Emmenegger L.
Atmospheric Measurement Techniques   5(7) 1601-1609   2012   [Refereed]
Nakagawa M, Ueno Y, Hattori S, Umemura M, Yagi A, Takai K, Koba K, Sasaki Y, Makabe A, Yoshida N.
Limnology and Oceanography   57(4) 974-988   2012   [Refereed]
Nakagawa M, Ueno Y, Hattori S, Umemura M, Yagi A, Takai K, Koba K, Sasaki Y, Makabe A, Yoshida N.
Limnology and Oceanography   57(4) 974-988   2012   [Refereed]
Ebihara Mitsuru, Yoshida Naohiro, Takahashi Yoshio
Geochemical Journal   46(4) 267-270   2012   [Refereed]
Schmidt J. A, Johnson M. S, Jung Y, Danielache S. O, Hattori S, Yoshida N.
Chemical Physics Letters   531 64-69   2012   [Refereed]
Schmidt J. A, Johnson M. S, Jung Y, Danielache S. O, Hattori S, Yoshida N.
Chemical Physics Letters   531 64-69   2012   [Refereed]
Danielache Sebastian O, Hattori Shohei, Johnson Matthew S, Ueno Yuichiro, Nanbu Shinkoh, Yoshida Naohiro
Journal of Geophysical Research-Atmospheres   117    2012   [Refereed]
Yoshida N, Takahashi Y.
Elements   8(3) 201-206   2012   [Refereed]
Yoshida N, Takahashi Y.
Elements   8(3) 201-206   2012   [Refereed]
Hattori S, Schmidt J. A, Mahler D. W, Danielache S. O, Johnson M. S, Yoshida N.
Journal of Physical Chemistry A   116(14) 3521-3526   2012   [Refereed]
Hattori S, Schmidt J. A, Mahler D. W, Danielache S. O, Johnson M. S, Yoshida N.
Journal of Physical Chemistry A   116(14) 3521-3526   2012   [Refereed]
Suzuki Yaeko, Chikaraishi Yoshito, Yamada Keita, Yoshida Naohiro
Bunseki Kagaku   61(9) 805-810   2012   [Refereed]
Yoshiya K, Nishizawa M, Sawaki Y, Ueno Y, Komiya T, Yamada K, Yoshida N, Hirata T, Wada H, Maruyama S.
Precambrian Research   212 169-193   2012   [Refereed]
Yoshiya K, Nishizawa M, Sawaki Y, Ueno Y, Komiya T, Yamada K, Yoshida N, Hirata T, Wada H, Maruyama S.
Precambrian Research   212 169-193   2012   [Refereed]
Hattori S, Nashimoto H, Kimura H, Koba K, Yamada K, Shimizu M, Watanabe H, Yoh M, Yoshida N.
Geochemical Journal   46(3) 193-200   2012   [Refereed]
Hattori S, Nashimoto H, Kimura H, Koba K, Yamada K, Shimizu M, Watanabe H, Yoh M, Yoshida N.
Geochemical Journal   46(3) 193-200   2012   [Refereed]
Uemura Ryu, Yonezawa Nao, Yoshimura Kei, Asami Ryuji, Kadena Hisashi, Yamada Keita, Yoshida Naohiro
Journal of Hydrology   475 314-322   2012   [Refereed]
Wu C, Yamada K, Sumikawa O, Matsunaga A, Gilbert A, Yoshida N.
Rapid Communications in Mass Spectrometry   26(8) 978-982   2012   [Refereed]
Wu C, Yamada K, Sumikawa O, Matsunaga A, Gilbert A, Yoshida N.
Rapid Communications in Mass Spectrometry   26(8) 978-982   2012   [Refereed]
Shibuya T, Tahata M, Kitajima K, Ueno Y, Komiya T, Yamamoto S, Igisu M, Terabayashi M, Sawaki Y, Takai K, Yoshida N, Maruyama S.
Earth and Planetary Science Letters   321 64-73   2012   [Refereed]
Shibuya T, Tahata M, Kitajima K, Ueno Y, Komiya T, Yamamoto S, Igisu M, Terabayashi M, Sawaki Y, Takai K, Yoshida N, Maruyama S.
Earth and Planetary Science Letters   321 64-73   2012   [Refereed]
Gilbert Alexis, Hattori Ryota, Silvestre Virginie, Wasano Nariaki, Akoka Serge, Hirano Satoshi, Yamada Keita, Yoshida Naohiro, Remaud Gerald S.
Talanta   99 1035-1039   2012   [Refereed]

Misc

 
Maxime Julien, Alexis Gilbert, Alexis Gilbert, Keita Yamada, Richard J. Robins, Patrick Höhener, Naohiro Yoshida, Naohiro Yoshida, Gérald S. Remaud
Talanta   176 367-373   Jan 2018
© 2017 Elsevier B.V. The enrichment factor (ε) is a common way to express Isotope Effects (IEs) associated with a phenomenon. Many studies determine ε using a Rayleigh-plot, which needs multiple data points. More recent articles describe an altern...
Tomomichi Kato, Tomomichi Kato, Keita Yamada, Yanhong Tang, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Eitaro Wada
Isotopes in Environmental and Health Studies   53 597-609   Nov 2017
© 2017 Informa UK Limited, trading as Taylor & Francis Group. On the Qinghai–Tibetan Plateau, isotopic signatures in soil–atmosphere CH 4 fluxes were investigated in nine grasslands and three wetlands. In the grasslands, the fractionation factor...
Nguyen Cong Thuan, Nguyen Cong Thuan, Keisuke Koba, Keisuke Koba, Midori Yano, Midori Yano, Akiko Makabe, Co Thi Kinh, Akihiko Terada, Sakae Toyoda, Naohiro Yoshida, Naohiro Yoshida, Yotaro Tanaka, Masanori Katsuyama, Muneoki Yoh
Limnology   1-12   Jun 2017
© 2017 The Japanese Society of Limnology Rivers are important sources of N 2 O emissions into the atmosphere. Nevertheless, N 2 O production processes in rivers are not well identified. We measured concentrations and isotopic ratios of N 2 O, NH 4...
Konomi Suda, Alexis Gilbert, Keita Yamada, Naohiro Yoshida, Naohiro Yoshida, Yuichiro Ueno, Yuichiro Ueno, Yuichiro Ueno
Geochimica et Cosmochimica Acta   206 201-215   Jun 2017
© 2017 Elsevier Ltd It has been proposed that serpentinite–hosted hydrothermal/hot spring systems played a significant role in the origin and early evolution of life on early Earth because abiogenic synthesis of organic compounds may accompany ser...
K. Kuribayashi, K. Kuribayashi, N. Yoshida, H. Jin, Y. J. Orsolini, Y. Kasai, Y. Kasai
Journal of Quantitative Spectroscopy and Radiative Transfer   192 42-52   May 2017
© 2017 Elsevier Ltd Spectrum width and intensity of ozone (O 3 ) observed in the MLT region behaves quite differently than in the stratosphere for submillimeter-wave limb emission spectroscopic observation. For example, O 3 spectra in the stratosp...
Sakae Toyoda, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Keisuke Koba
Mass Spectrometry Reviews   36 135-160   Mar 2017
© 2015 Wiley Periodicals, Inc. Natural abundance ratios of isotopocules, molecules that have the same chemical constitution and configuration, but that only differ in isotope substitution, retain a record of a compound's origin and reactions. A me...
Masafumi Saitoh, Yuichiro Ueno, Yuichiro Ueno, Fumihiro Matsu'ura, Tetsuya Kawamura, Yukio Isozaki, Jianxin Yao, Zhansheng Ji, Naohiro Yoshida, Naohiro Yoshida
Journal of Asian Earth Sciences   135 70-79   Mar 2017
© 2016 Elsevier Ltd A recent study on quadruple sulfur isotopes ( 32 S, 33 S, 34 S, and 36 S) of sedimentary pyrite suggested that the end-Guadalupian extinction was caused by shoaling of the sulfidic deep-water. This scenario is based on the assu...
Shohei Hattori, Joel Savarino, Joel Savarino, Kazuki Kamezaki, Sakiko Ishino, Jens Dyckmans, Tamaki Fujinawa, Nicolas Caillon, Nicolas Caillon, Albane Barbero, Albane Barbero, Arata Mukotaka, Sakae Toyoda, Reinhard Well, Naohiro Yoshida, Naohiro Yoshida
Rapid Communications in Mass Spectrometry   31 396   Feb 2017
Copyright © 2017 John Wiley & Sons, Ltd. Rapid Commun. Mass Spectrom. 2016, 30, 2635–2644. DOI: 10.1002/rcm.7747 The Acknowledgements section in this paper has been updated to read: Acknowledgements Y. Sone and M. Ohori of Thermo Fisher Scientif...
Masahide Ishizuka, Masao Mikami, Taichu Y. Tanaka, Yasuhito Igarashi, Kazuyuki Kita, Yutaka Yamada, Naohiro Yoshida, Sakae Toyoda, Yukihiko Satou, Takeshi Kinase, Kazuhiko Ninomiya, Atsushi Shinohara
Journal of Environmental Radioactivity   166 436-448   Jan 2017
© 2016 Elsevier Ltd A size-resolved, one-dimensional resuspension scheme for soil particles from the ground surface is proposed to evaluate the concentration of radioactivity in the atmosphere due to the secondary emission of radioactive material....
Masanori Kaneko, Yoshinori Takano, Nanako O. Ogawa, Yuki Sato, Naohiro Yoshida, Naohiko Ohkouchi
Geochemical Journal   50 453-460   Jan 2016
© 2016 by The Geochemical Society of Japan. Coenzyme F430 is the hydrocorphinoid nickel complex which acts as active site in methyl-coenzyme M reductase (MCR). The MCR-F430 complex catalyzes the last step of methanogenesis: Reduction of methyl-coe...
Florian Breider, Chisato Yoshikawa, Hitomi Abe, Sakae Toyoda, Naohiro Yoshida, Naohiro Yoshida
Global Biogeochemical Cycles   29 1014-1027   Jul 2015
©2015. American Geophysical Union. All Rights Reserved. Nitrous oxide (N < inf > 2 < /inf > O) is an atmospheric trace gas playing an important role in both radiative forcing and stratospheric ozone depletion. The oceans are the second most import...
Chisato Yoshikawa, Akiko Makabe, Takuhei Shiozaki, Sakae Toyoda, Osamu Yoshida, Ken Furuya, Naohiro Yoshida, Naohiro Yoshida
Geochemistry, Geophysics, Geosystems   16 1439-1448   May 2015
© 2015. The Authors. Nitrogen isotopic ratios of nitrate (δ 15 N- NO3-) were analyzed above 1000 m water depth along 17°S in the subtropical South Pacific during the revisit WOCE P21 cruise in 2009. The δ 15 N- NO3- and N∗ values were as high as 1...
Toshiro Yamanaka, Hiromi Nagashiov, Ryu Nishio, Kazuna Kondo, Takuroh Noguchi, Takuroh Noguchi, Kei Okamura, Takuro Nunoura, Takuro Nunoura, Hiroko Makita, Kentaro Nakamura, Kentaro Nakamura, Hiromi Watanabe, Kazuhiro Inoue, Tomohiro Toki, Kouichiro Iguchi, Urumu Tsunogai, Urumu Tsunogai, Ryoichi Nakada, Ryoichi Nakada, Shogo Ohshima, Shin Toyoda, Jun Kawai, Naohiro Yoshida, Akira Ijiri, Michinari Sunamura
Subseafloor Biosphere Linked to Hydrothermal Systems: TAIGA Concept   497-504   Jan 2015
© The Author(s) 2015. Tarama Knoll is located about 60 km north of Tarama Island, Sakishima Islands, southwestern Japan. The knoll has an almost conical shape, with foot and summit depths of 2,000 and 1,490 m (total relief ¼ 510 m) from the sea su...
Masafumi Saitoh, Masafumi Saitoh, Yuichiro Ueno, Yuichiro Ueno, Yukio Isozaki, Manabu Nishizawa, Katsumi Shozugawa, Tetsuya Kawamura, Jianxin Yao, Zhansheng Ji, Ken Takai, Ken Takai, Ken Takai, Naohiro Yoshida, Naohiro Yoshida, Motoyuki Matsuo
Global and Planetary Change   123 110-120   Dec 2014
© 2014 Elsevier B.V. The total nitrogen and pyrite sulfur isotopic compositions of the Guadalupian-Lopingian (Middle-Upper Permian) shelf carbonates are analyzed at Chaotian in northern Sichuan, South China, to clarify the environmental changes in...
N. Zhang, K. Yamada, N. Suzuki, N. Yoshida, N. Yoshida
Biogeosciences   11 5335-5348   Oct 2014
© Author(s) 2014. CC Attribution 3.0 License. The carbon isotopic composition (δ 13 C) of land snail shell carbonate derives from three potential sources: diet, atmospheric CO 2 , and ingested carbonate (limestone). However, their relative contrib...
Hiroyuki Haraguchi, Hiroyuki Haraguchi, Keita Yamada, Rumiko Miyashita, Kazuhiko Aida, Masao Ohnishi, Alexis Gilbert, Naohiro Yoshida, Naohiro Yoshida
Journal of Oleo Science   63 1283-1291   Jan 2014
© 2014 by Japan Oil Chemists’ Society. The ceramide (Cer) content of skin and glucosylceramide (GlcCer) intake affect skin moisture conditions, but their mutual relation in skin remains unclear. For clarification of that mutual relation, carbon st...
Satoshi Ishii, Yanjun Song, Lashitha Rathnayake, Azzaya Tumendelger, Hisashi Satoh, Sakae Toyoda, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Satoshi Okabe
Environmental Microbiology   16 3168-3180   Jan 2014
© 2014 Society for Applied Microbiology and John Wiley & Sons Ltd. Summary: The identification of the key nitrous oxide (N 2 O) production pathways is important to establish a strategy to mitigate N 2 O emission. In this study, we combined real-...
Yun Zou, Yuhei Hirono, Yosuke Yanai, Shohei Hattori, Sakae Toyoda, Naohiro Yoshida, Naohiro Yoshida
Soil Biology and Biochemistry   77 276-291   Jan 2014
Nitrous oxide (N 2 O) is a greenhouse gas that is destroying the stratospheric ozone to an increasing degree. Because of nitrogenous fertilizer application, agricultural soil is an important contributor of global N 2 O. In Japan, tea fields are am...
Chisato Yoshikawa, Victoria J. Coles, Raleigh R. Hood, Douglas G. Capone, Naohiro Yoshida
Journal of Geophysical Research: Oceans   118 2520-2534   Jan 2013
We represented mechanistically the process of nitrogen (N) fixation and associa ted N* anomalies in the Atlantic Ocean using a three-dimensional coupled physical/biogeochemical model. Available direct measurements of N fixation rates in the Atlant...
Sebastian O. Danielache, Chisato Yoshikawa, Antra Priyadarshi, Toshihiko Takemura, Yuichiro Ueno, Mark H. Thiemens, Naohiro Yoshida
Geochemical Journal   46 335-339   Dec 2012
We present a numerical study carried out with the SPRINTARS model modified to account for the radioactive decay of 35 S compounds emitted from the Fukushima Daiichi nuclear power plant station after the hydrogen and vapor blast. The transport dyn...
Nobuhito Ohte, Ichiro Tayasu, Ayato Kohzu, Chikage Yoshimizu, Kenichi Osaka, Akiko Makabe, Keisuke Koba, Naohiro Yoshida, Toshi Nagata
Water Resources Research   46 W07505, 16 PP   Jul 2010
©2010 by the American Geophysical Union. To clarify the pathways and origins of dissolved nitrate (NO - 3 ) in rivers flowing into Lake Biwa, Japan, three types of coordinated surveys of concentrations and isotope compositions of NO - 3 were condu...
Keisuke Koba, Yunting Fang, Yunting Fang, Yunting Fang, Jiangming Mo, Wei Zhang, Xiankai Lu, Lei Liu, Tao Zhang, Yu Takebayashi, Sakae Toyoda, Naohiro Yoshida, Naohiro Yoshida, Keisuke Suzuki, Muneoki Yoh, Keishi Senoo
Journal of Geophysical Research: Biogeosciences   117    Jun 2012
The < sup > 15 < /sup > N-enrichment of plants and soils is believed to indicate characteristics of the open nitrogen (N) cycle in terrestrial ecosystems because N lost from an ecosystem is presumably < sup > 15 < /sup > N-depleted through isoto...
Y. Sasaki, K. Koba, M. Yamamoto, A. Makabe, Y. Ueno, M. Nakagawa, S. Toyoda, N. Yoshida, M. Yoh
Journal of Geophysical Research: Biogeosciences   116    Dec 2011
The biogeochemistry of nitrous oxide (N < inf > 2 < /inf > O) was investigated in Lake Kizaki, Japan, where accumulation of N < inf > 2 < /inf > O in the water column has been observed. The N < inf > 2 < /inf > O concentration profile showed weak ...
J. Mohn, C. Guggenheim, B. Tuzson, M. K. Vollmer, S. Toyoda, N. Yoshida, L. Emmenegger
Atmospheric Measurement Techniques   3 609窶骭€618-618   Dec 2010
Important information about the biogeochemical cycle of nitrous oxide (N 2 O) can be obtained by measuring its three main isotopic species, 14 N 15 N 16 O, 15 N 14 N 16 O, and 14 N 14 N 16 O, and the respective site-specific relative iso...
Keita Yamada, Ryota Hattori, Yuji Ito, Hiroki Shibata, Naohiro Yoshida, Naohiro Yoshida
Isotopes in Environmental and Health Studies   46(3) 392-399   Sep 2010
Isotopic signatures of atmospheric methanol and acetaldehyde have the potential to improve our ability to quantitatively assess their importance in atmospheric chemistry. However, isotopic measurements of atmospheric methanol and acetaldehyde and ...
Kiyoshi Tsuji, Kiyoshi Tsuji, Hiroaki Teshima, Hiroaki Teshima, Hiroyuki Sasada, Hiroyuki Sasada, Naohiro Yoshida, Naohiro Yoshida
Sensors   10 6612-6622   Jul 2010
We have developed an efficient and compact 3.4 μm difference-frequency-generation spectrometer using a 1.55 μm distributed feedback (DFB) laser diode, a 1.06 μm DFB laser diode, and a ridge-waveguide periodically poled lithium niobate. It is conti...
Ryota Hattori, Keita Yamada, Hiroki Shibata, Satoshi Hirano, Osamu Tajima, Naohiro Yoshida, Naohiro Yoshida
Journal of Agricultural and Food Chemistry   58(12) 7115-7118   Jun 2010
Acetic acid is the main ingredient of vinegar, and the worth of vinegar often depends on the fermentation of raw materials. In this study, we have developed a simple and rapid method for discriminating the fermentation of the raw materials of vine...
Osamu Abe, Atsushi Watanabe, V. V.S.S. Sarma, V. V.S.S. Sarma, Yohei Matsui, Hiroya Yamano, Naohiro Yoshida, Toshiro Saino, Toshiro Saino
Journal of Oceanography   66(3) 363-372   Jun 2010
We estimated gas exchange rates in Kabira Reef at Ishigaki Island, southwest Japan, using a mass balance calculation with dual "biological" tracers: dissolved inorganic carbon (DIC) and dissolved oxygen (DO). The nighttime results allowed us to ob...
Y. Tobari, K. Koba, K. Koba, K. Fukushima, K. Fukushima, N. Tokuchi, N. Ohte, N. Ohte, R. Tateno, R. Tateno, S. Toyoda, T. Yoshioka, T. Yoshioka, N. Yoshida, N. Yoshida
Rapid Communications in Mass Spectrometry   24(9) 1281-1286   May 2010
Evaluation of the openness of the nitrogen (N) cycle in forest ecosystems is important in efforts to improve forest management because the N supply often limits primary production. The use of the oxygen isotope ratio (δ 18 O) of nitrate is a promi...
Yusuke Sawaki, Takahiro Kawai, Takazo Shibuya, Miyuki Tahata, Soichi Omori, Soichi Omori, Tsuyoshi Komiya, Tsuyoshi Komiya, Naohiro Yoshida, Naohiro Yoshida, Takafumi Hirata, Takafumi Hirata, Takeshi Ohno, Takeshi Ohno, Brian F. Windley, Shigenori Maruyama, Shigenori Maruyama
Precambrian Research   179 150-164   May 2010
The Neoproterozoic-Cambrian Dalradian Supergroup of Scotland contains three glaciogenic sedimentary units, the Port Askaig Formation, the Stralinchy-Reelan Formation, and the Loch na Cille Boulder Bed, in ascending order. Although the idea, that r...
Hiroyuki Kimura, Hiroaki Nashimoto, Mikio Shimizu, Shohei Hattori, Keita Yamada, Keisuke Koba, Naohiro Yoshida, Kenji Kato
ISME Journal   4 531-541   Apr 2010
To identify the methanogenic pathways present in a deep aquifer associated with an accretionary prism in Southwest Japan, a series of geochemical and microbiological studies of natural gas and groundwater derived from a deep aquifer were performed...
Koki Maeda, Koki Maeda, Sakae Toyoda, Ryosuke Shimojima, Takashi Osada, Dai Hanajima, Riki Morioka, Naohiro Yoshida
Applied and Environmental Microbiology   76(5) 1555-1562   Mar 2010
A molecular analysis of betaproteobacterial ammonia oxidizers and a N 2 O isotopomer analysis were conducted to study the sources of N 2 O emissions during the cow manure composting process. Much NO 2 - ·N and NO 3 - ·N and the Nitrosomonas eur...
Hiroyuki Kimura, Kousuke Mori, Hiroaki Nashimoto, Shohei Hattori, Keita Yamada, Keisuke Koba, Naohiro Yoshida, Kenji Kato
Environmental Microbiology   12(2) 480-489   Feb 2010
Microbial biomass production has been measured to investigate the contribution of planktonic bacteria to fluxations in dissolved organic matter in marine and freshwater environments, but little is known about biomass production of thermophiles inh...
Nobuhito Ohte, Ichiro Tayasu, Ayato Kohzu, Chikage Yoshimizu, Ken'Ichi Osaka, Akiko Makabe, Keisuke Koba, Naohiro Yoshida, Toshi Nagata
Water Resources Research   46 W07505, 16 PP   2010
Keita Yamada, Keita Yamada, Ryota Hattori, Yuji Ito, Hiroki Shibata, Hiroki Shibata, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Geophysical Research Letters   36(18) L18807   Sep 2009
We present carbon isotopic signatures of methanol and acetaldehyde emitted from biomass burning sources using laboratory experiments. The respective SC of methanol and acetaldehyde emitted from burning experiments of five plant materials (three C ...
Yuichiro Ueno, Yuichiro Ueno, Matthew S. Johnson, Sebastian O. Danielache, Sebastian O. Danielache, Sebastian O. Danielache, Carsten Eskebjerg, Antra Pandey, Antra Pandey, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Proceedings of the National Academy of Sciences of the United States of America   106(35) 14784-14789   Sep 2009
Distributions of sulfur isotopes in geological samples would provide a record of atmospheric composition if the mechanism producing the isotope effects could be described quantitatively. We determined the UV absorption spectra of 32 SO 2 , 33 SO...
Osamu Abe, Seizen Agata, Maki Morimoto, Manabu Abe, Kei Yoshimura, Tetsuya Hiyama, Naohiro Yoshida
Isotopes in Environmental and Health Studies   45(3) 247-258   Sep 2009
We produced continuous records of sea surface salinity and isotopic composition from 1998 to 2004 at Ishigaki Island, southwest Japan, and found clear seasonal variations in salinity and oxygen isotopic composition and increasing trends of them af...
Sebastian O. Danielache, Sebastian O. Danielache, Shinkoh Nanbu, Carsten Eskebjerg, Matthew S. Johnson, Naohiro Yoshida, Naohiro Yoshida
Journal of Chemical Physics   131(2) 024307   Jul 2009
Ultraviolet absorption cross sections of the main and substituted carbonyl sulfide isotopologues were calculated using wavepacket dynamics. The calculated absorption cross section of O 16 C 12 S 32 is in very good agreement with the accepted exper...
Sakae Toyoda, Hiroyuki Iwai, Keisuke Koba, Keisuke Koba, Naohiro Yoshida, Naohiro Yoshida
Rapid Communications in Mass Spectrometry   23(6) 809-821   Jun 2009
River water has been suggested as a potential source of nitrous oxide (N 2 O), which is a greenhouse gas that is accumulating rapidly in the troposphere and which is a precursor to stratospheric NO x that depletes ozone. Previous studies on fresh...
K. Koba, K. Koba, K. Koba, K. Osaka, K. Osaka, Y. Tobari, Y. Tobari, S. Toyoda, S. Toyoda, N. Ohte, N. Ohte, M. Katsuyama, M. Katsuyama, N. Suzuki, N. Suzuki, N. Suzuki, M. Itoh, M. Itoh, H. Yamagishi, H. Yamagishi, H. Yamagishi, M. Kawasaki, M. Kawasaki, S. J. Kim, S. J. Kim, N. Yoshida, N. Yoshida, N. Yoshida, N. Yoshida, T. Nakajima
Geochimica et Cosmochimica Acta   73(11) 3115-3133   Jun 2009
The biological and physical controls on microbial processes that produce and consume N 2 O in soils are highly complex. Isotopomer ratios of N 2 O, with abundance of 14 N 15 N 16 O, 15 N 14 N 16 O, and 14 N 14 N 18 O relative to 14 N 14 N 16 O...
Ryota Hattori, Keita Yamada, Keita Yamada, Kaori Hasegawa, Yumi Ishikawa, Yuji Ito, Yuji Sakamoto, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Rapid Communications in Mass Spectrometry   22(21) 3410-3414   Nov 2008
The isotope ratios of ethanol, an important constituent or ingredient of some foods and various beverages and fuels, provide information about biological and geographical origin and quality. We have developed an improved method for measuring the i...
Ryu Uemura, Ryu Uemura, Yohei Matsui, Yohei Matsui, Kei Yoshimura, Hideaki Motoyama, Naohiro Yoshida
Journal of Geophysical Research Atmospheres   113(D19) D19114   Oct 2008
Stable isotopes of water are important climatic tracers used to understand atmospheric moisture cycling and to reconstruct paleoclimate. The combined use of hydrogen and oxygen isotopes in water provides an additional parameter, deuterium excess (...
Sebastian O. Danielache, Sebastian O. Danielache, Carsten Eskebjerg, Matthew S. Johnson, Yuichiro Ueno, Yuichiro Ueno, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Journal of Geophysical Research Atmospheres   113(D17) D17314   Sep 2008
We report measurements of the ultraviolet absorption cross sections of < sup > 32 < /sup > SO < inf > 2 < /inf > , < sup > 33 < /sup > SO < inf > 2 < /inf > , and < sup > 34 < /sup > SO < inf > 2 < /inf > , recorded from 30,300 to 52,500 cm < s...
Tomoko Ishikawa, Yuichiro Ueno, Yuichiro Ueno, Tsuyoshi Komiya, Tsuyoshi Komiya, Yusuke Sawaki, Jian Han, Degan Shu, Yong Li, Shigenori Maruyama, Shigenori Maruyama, Naohiro Yoshida, Naohiro Yoshida
Gondwana Research   14 193-208   Aug 2008
Carbon isotope chemostratigraphy has been used for worldwide correlation of Precambrian/Cambrian (Pc/C) boundary sections, and has elucidated significant change of the carbon cycle during the rapid diversification of skeletal metazoa (i.e. the Cam...
Sakae Toyoda, Sei Ichiro Yamamoto, Shinji Arai, Hideki Nara, Hideki Nara, Naohiro Yoshida, Naohiro Yoshida, Kiriko Kashiwakura, Ken Ichi Akiyama
Rapid Communications in Mass Spectrometry   22(5) 603-612   Mar 2008
Fossil fuel combustion is the second largest anthropogenic source of nitrous oxide (N 2 O) after agriculture. The estimated global N 2 O flux from combustion sources, as well as from other sources, still has a large uncertainty. Herein, we charac...
Sebastian O. Danielache, Matthew S. Johnson, Shinkoh Nanbu, Mette M.L. Grage, Chris McLinden, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Chemical Physics Letters   450(4-6) 214-220   Jan 2008
The fractionation of sulfur isotopes in the gas-phase reaction of OCS with OH was calculated by ab initio methods. The first reaction step occurs through a carbon bonded OH-OCS transition state. The activation barrier is 18.4 kJ mol -1 (CCSD(T)/a...
Shiro Kohshima, Nozomu Takeuchi, Jun Uetake, Takayuki Shiraiwa, Ryu Uemura, Naohiro Yoshida, Sumito Matoba, Maria Angelica Godoi
Global and Planetary Change   59 236-244   Oct 2007
Snow algae in a 45.97-m-long ice core from the Tyndall Glacier (50°59′05″S, 73°31′12″W, 1756 m a.s.l.) in the Southern Patagonian Icefield were examined for potential use in ice core dating and estimation of the net accumulation rate. The core was...
J. Charpentier, J. Charpentier, L. Farias, N. Yoshida, N. Yoshida, N. Boontanon, N. Boontanon, P. Raimbault
Biogeosciences   4 1673窶骭€1702-741   Sep 2007
The mechanisms of microbial nitrous oxide (N 2 O) production in the ocean have been the subject of many discussions in recent years. New isotopomeric tools can further refine our knowledge of N 2 O sources in natural environments. This study compa...
Hiroaki Yamagishi, Hiroaki Yamagishi, Hiroaki Yamagishi, Hiroaki Yamagishi, Marian B. Westley, Marian B. Westley, Brian N. Popp, Sakae Toyoda, Sakae Toyoda, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Shuichi Watanabe, Shuichi Watanabe, Shuichi Watanabe, Keisuke Koba, Keisuke Koba, Keisuke Koba, Yasuhiro Yamanaka, Yasuhiro Yamanaka
Journal of Geophysical Research: Biogeosciences   112    Jun 2007
Nitrous oxide (N 2 O) is an important atmospheric greenhouse gas and is involved in stratospheric ozone depletion. Analysis of the isotopomer ratios of N 2 O (i.e., the intramolecular distribution of 15 N within the linear NNO molecule and the co...
F. Parrenin, G. Dreyfus, G. Durand, G. Durand, S. Fujita, O. Gagliardini, F. Gillet, J. Jouze, K. Kawamura, N. Lhomme, V. Masson-Delmotte, C. Ritz, J. Schwander, H. Shoji, R. Uemura, O. Watanabe, N. Yoshida
Climate of the Past   3 243窶骭€259-259   Jun 2007
One-dimensional (1-D) ice flow models are used to construct the age scales at the Dome C and Dome Fuji drilling sites (East Antarctica). The poorly constrained glaciological parameters at each site are recovered by fitting independent age markers ...
Ryu Uemura, Ryu Uemura, Yohei Matsui, Yohei Matsui, Hideaki Motoyama, Naohiro Yoshida, Naohiro Yoshida
Rapid Communications in Mass Spectrometry   21(11) 1783-1790   Jun 2007
We describe a modified version of the equilibration method and a correction algorithm for isotope ratio measurements of small quantities of water samples. The δD and the δ 18 O of the same water sample can both be analyzed using an automated equil...
Keita Yamada, Keita Yamada, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Giovanni Calderone, Claude Guillou
Rapid Communications in Mass Spectrometry   21(8) 1431-1437   May 2007
Three stable isotope ratios, D/H, 13 C/ 12 C and 18 O/ 16 O, are measurable in ethanol, an important organic compound that is used as a material for food and beverages, fuel and chemical feedstock, and as a substance related to metabolism. We de...
Kenji Anzai, Kenji Anzai, Hiroyuki Sasada, Hiroyuki Sasada, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   46(4A) 1717-1721   Apr 2007
To determine the isotopomer abundance ratio of 13 CH 4 to 12 CH 4 by infrared absorption spectroscopy, we selected the v 3 P(6) A 1 transition of 13 CH 4 at 2947.6970cm -1 and the V 2 + V 4 R(6) F 1 transition of 12 CH 4 at 2947.4246...
Hideki Nara, Hideki Nara, Sakae Toyoda, Sakae Toyoda, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Journal of Atmospheric Chemistry   56(3) 293-314   Apr 2007
Stable carbon isotopic composition of ethane and propane over the western North Pacific and eastern Indian Ocean between 31°N and 26°S was investigated from February through March 2004. The isotopic composition of ethane ranged from -28 to -18‰ an...
Masao Sorai, Masao Sorai, Masao Sorai, Naohiro Yoshida, Naohiro Yoshida, Masamichi Ishikawa
Journal of Geophysical Research: Biogeosciences   112(G01006) pp.   Mar 2007
We modeled the biogeochemical nitrogen cycle with specific emphasis on N 2 O behavior to describe the global N 2 O cycle system quantitatively. Here all the major nitrogen cycle processes are included plus the processes directly related to N 2 O. ...
V. V.S.S. Sarma, V. V.S.S. Sarma, O. Abe, N. Yoshida, N. Yoshida, T. Saino, T. Saino
Rapid Communications in Mass Spectrometry   20(23) 3503-3508   Dec 2006
A continuous shipboard sampling system was developed for the determination of the isotopic composition of the triple oxygen isotopes and oxygen to argon (O 2 /Ar) ratios in dissolved air. In this system, dissolved air is separated by a hollow fibe...
Keita Yamada, Keita Yamada, Yoko Ozaki, Fumiko Nakagawa, Shigeto Sudo, Haruo Tsuruta, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Journal of Geophysical Research Atmospheres   111(D16) D16306-D16306   Aug 2006
The hydrogen and carbon isotope ratios of CH < inf > 4 < /inf > emitted from one bonfire and two laboratory combustions of agricultural residues were determined in this study as -196 to -262‰ for δD and -19.9 to -35.1‰ for δ < sup > 13 < /sup > C...
Marian B. Westley, Hiroaki Yamagishi, Hiroaki Yamagishi, Brian N. Popp, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Deep-Sea Research Part II: Topical Studies in Oceanography   53 1802-1816   Aug 2006
The low-oxygen regions of the world's oceans have been shown to be major sources of nitrous oxide, a trace gas in the atmosphere that contributes to both greenhouse warming and the destruction of stratospheric ozone. Nitrous oxide can be produced ...
Kenji Anzai, Xiaoming Gao, Xiaoming Gao, Hiroyuki Sasada, Naohiro Yoshida
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   45(4A) 2771-2775   Apr 2006
We have developed a sub-Doppler-resolution spectrometer tunable in the 3.4 μm region on the basis of difference frequency generation and an enhancement cavity cell. The spectrometer has allowed us to record the Lamb dips of the V 3 fundamental ba...
K. Tsuji, K. Tsuji, K. Tsuji, S. Fujikawa, K. Yamada, K. Yamada, K. Yamada, N. Yoshida, N. Yoshida, N. Yoshida, N. Yoshida, N. Yoshida, K. Yamamoto, T. Kikugawa
Sensors and Actuators, B: Chemical   114(1) 326-333   Mar 2006
We measure the 13 CH 4 / 12 CH 4 ratio of methane diluted with air or nitrogen to investigate the applicability of our laser spectrometer to real environmental samples. We developed a 1.66 μm diode laser absorption spectrometer and demonstrat...
Yuichiro Ueno, Yuichiro Ueno, Yuichiro Ueno, Keita Yamada, Keita Yamada, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Shigenori Maruyama, Shigenori Maruyama, Yukio Isozaki
Nature   440(7083) 516-519   Mar 2006
Methanogenic microbes may be one of the most primitive organisms 1 , although it is uncertain when methanogens first appeared on Earth. During the Archaean era (before 2.5 Gyr ago), methanogens may have been important in regulating climate, becau...
Hideki Nara, Hideki Nara, Fumiko Nakagawa, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Rapid Communications in Mass Spectrometry   20(2) 241-247   Jan 2006
A two-dimensional gas chromatography/combustion/isotope ratio mass spectrometry (2D-GC/C/ IRMS) system was developed for stable carbon isotopic measurements of C 2 -C 5 non-methane hydrocarbons (NMHCs) in biomass burning smoke. The 2D-GC/C/IRMS s...
Keiko Ishida-Fujii, Shingo Goto, Ryu Uemura, Ryu Uemura, Keita Yamada, Keita Yamada, Michikatsu Sato, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Bioscience, Biotechnology and Biochemistry   69(11) 2193-2199   Dec 2005
The isotope ratios of carbon, hydrogen, and oxygen of rectified alcohols were determined to distinguish their botanical and geographical origins by continuous flow-isotope ratio mass spectrometry (CF-IRMS). The 13 C/ 12 C and 18 O/ 16 O ratios ...
Mitsuteru Ogawa, Mitsuteru Ogawa, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Chemosphere   61(6) 877-887   Nov 2005
The intramolecular distribution of stable isotopes in nitrous oxide that is emitted during coal combustion was analyzed using an isotopic ratio mass spectrometer equipped with a modified ion collector system (IRMS). The coal was combusted in a tes...
Sakae Toyoda, Sakae Toyoda, Hidenori Mutobe, Hiroaki Yamagishi, Hiroaki Yamagishi, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Yasunori Tanji
Soil Biology and Biochemistry   37(8) 1535-1545   Aug 2005
Isotopomer ratios of N 2 O, which include intramolecular 15 N-site preference in addition to conventional isotope ratios for N and O in NNO (we designate N α and N β for the center and end N atom, respectively, in the asymmetric molecule), refl...
Mitsuteru Ogawa, Mitsuteru Ogawa, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Atmospheric Environment   39(19) 3421-3429   Jun 2005
The intramolecular distribution of stable isotopes in nitrous oxide from biomass burning plumes was measured for analysis of nitrous oxide behavior. Biomass burning experiments carried out for collecting the burning plumes used a grate-type test f...
Gao Xiaomlng, Gao Xiaomlng, Hiroyuki Sasada, Kenji Anzai, Naohiro Yoshida
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   44(3) 1452-1456   Mar 2005
We have recorded the transmission spectrum of an optical cavity absorption cell filled with methane gas using a tunable continuous-wave light source in the mid-infrared region, To determine the absorption strength of the gas, we have measured the ...
Hiroaki Yamagishi, Hiroaki Yamagishi, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Sakae Toyoda, Sakae Toyoda, Brian N. Popp, Marian B. Westley, Shuichi Watanabe, Shuichi Watanabe
Geophysical Research Letters   32 L04603, DOI 10.1029/2004GL0214-4   Feb 2005
We analyzed N 2 O isotopomer ratios (distribution of isotopes within N 2 O molecules) in the eastern tropical North Pacific. The N 2 O isotopomer ratios indicate the contribution of denitrification in the oxygen minimum zone (OMZ, ∼600 m in depth)...
Naoyuki Kurita, Naoyuki Kurita, Naoyuki Kurita, Atsuko Sugimoto, Yoshiyuki Fujii, Tatsuya Fukazawa, Vladimir N. Makarov, Okitsugu Watanabe, Kimpei Ichiyanagi, Kimpei Ichiyanagi, Atusi Numaguti, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Journal of Geophysical Research Atmospheres   110    Jan 2005
The spatial isotopic distribution of the snowpack over Siberia, where winter temperatures are as cold as those of the polar regions, was observed by the Trans-Siberian Snow Survey (TSSS) and Trans-Verkhoyansk Snow Survey Expedition (TVSSE) in Marc...
Fumiko Nakagawa, Urumu Tsunogai, Daisuke D. Komatsu, Keita Yamada, Keita Yamada, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Jun Moriizumi, Koichiro Nagamine, Koichiro Nagamine, Takao Iida, Yukimasa Ikebe
Organic Geochemistry   36(5) 727-738   Jan 2005
The stable carbon and hydrogen isotopic compositions (δ 13 C and δD, respectively) of methane (CH 4 ) in automobile exhaust were determined in order to quantify by mass balance the contribution from this source to atmospheric CH 4 in an urban area...
Keita Yamada, Keita Yamada, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Fumiko Nakagawa, Gen Inoue
Organic Geochemistry   36(5) 717-726   Jan 2005
We measured the stable carbon and hydrogen isotope ratios of atmospheric methane (CH 4 ) from western Siberia to obtain information about local CH 4 sources. Isotopic mass balance calculations yielded stable hydrogen and carbon isotope values for ...
Sakae Toyoda, Sakae Toyoda, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Handbook of Stable Isotope Analytical Techniques   390-399   Dec 2004
© 2004 Elsevier B.V. All rights reserved. Site-specific nitrogen isotope analysis for N 2 0 is made by mass fragmentation analysis on a conventional isotope-ratio mass spectrometer for a sample size at the micromolar level. The precision of the an...
Mitsuteru Ogawa, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Journal of Geophysical Research D: Atmospheres   109(D19) D19301, doi 10.1029/2004JD0046   Oct 2004
Kinetic isotope effects in nitrous oxide thermal decomposition and reduction reactions were investigated in flowing N 2 O/He and N 2 O/He/H 2 systems. The intramolecular distribution of stable isotopes, isotopomer, was measured and evaluated usin...
Hanns Ludwig Schmidt, Hanns Ludwig Schmidt, Roland A. Werner, Naohiro Yoshida, Reinhard Well
Rapid Communications in Mass Spectrometry   18(18) 2036-2040   Sep 2004
Literature data on the isotopic composition of nitrous oxide indicate a general predominance of the α- 15 N-isotopomer and a parallel 18 O-enrichment in N 2 O from nitrification and denitrification, respectively. As the kinetic isotope effects on...
R. Uemura, N. Yoshida, N. Yoshida, N. Kurita, M. Nakawo, O. Watanabe
Geophysical Research Letters   31    Jul 2004
An extended deuterium excess (d or d-excess) record covering the last three glacial-interglacial cycles (ca. 340,000 years) was obtained from the Dome Fuji ice core, Antarctica. In order to interpret the Antarctic d record as a climatic history of...
Fumiko Nakagawa, Fumiko Nakagawa, Urumu Tsunogai, Toshitaka Gamo, Naohiro Yoshida, Naohiro Yoshida
Journal of Geophysical Research C: Oceans   109 C06016, doi:10.1029/2001JC0011   Jun 2004
Included in this report are the results of the first isotopic studies of seawater-dissolved carbon monoxide (CO). Large variations in both carbon and oxygen isotopic compositions (δ 13 C: -44.7 ∼ -21.1‰PDB, and δ 18 O: +8.7 ∼ +32.9‰SMOW) were obse...
Sakae Toyoda, Sakae Toyoda, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Taichiro Urabe, Yusuke Nakayama, Takeshi Suzuki, Kazuhide Tsuji, Kazuhiko Shibuya, Shuji Aoki, Takakiyo Nakazawa, Shigeyuki Ishidoya, Kentaro Ishijima, Satoshi Sugawara, Toshinobu Machida, Gen Hashida, Shinji Morimoto, Hideyuki Honda
Journal of Geophysical Research D: Atmospheres   109    Apr 2004
Temporal and latitudinal variations of vertical profiles of N 2 O isotopomers were observed in the stratosphere over Japan (39°N, 142°E), Sweden (68°N, 20°E), and Antarctica (69°N, 40°E) during the period between 1990 and 2001. Samples were collec...
Naoyuki Kurita, Naohiro Yoshida, Naohiro Yoshida, Gen Inoue, Eleonora A. Chayanova
Journal of Geophysical Research D: Atmospheres   109 D03102, doi:10.1029/2003JD0034   Feb 2004
The spatial and temporal variation in the stable isotopic composition of precipitation collected at 13 monitoring stations across Russia between 1996 and 2000 was determined. The results show that eastward moisture transport over the continent gen...
R. Bol, S. Toyoda, S. Toyoda, S. Yamulki, J. M.B. Hawkins, L. M. Cardenas, N. Yoshida, N. Yoshida
Rapid Communications in Mass Spectrometry   17(22) 2550-2556   Nov 2003
The N 2 O and N 2 fluxes emitted from a temperate UK grassland soil after fertiliser application (equivalent to 25 and 75 kg N ha -1 ) were simultaneously measured, using a new automated soil incubation system, which replaces soil atmosphere (N 2...
Naoyuki Kurita, Naoyuki Kurita, Naoyuki Kurita, Atusi Numaguti, Atusi Numaguti, Atsuko Sugimoto, Kimpei Ichiyanagi, Naohiro Yoshida, Naohiro Yoshida
Journal of Geophysical Research D: Atmospheres   108 doi:10.1029/2001JD001359   Jun 2003
The response of the isotopic ratio of summer precipitation in eastern Siberia to precipitation sources is estimated by examination of stable isotope ratios in the summer precipitation and by atmospheric data analysis, based on water balance consid...
K. Uehara, K. Uehara, K. Yamamoto, K. Yamamoto, T. Kikugawa, T. Kikugawa, S. Toyoda, K. Tsuji, N. Yoshida, N. Yoshida
Sensors and Actuators, B: Chemical   90(1-3) 250-255   Apr 2003
High-precision measurement of the isotope abundance ratio 14 N 15 N 16 O/ 15 N 14 N 16 O/ 14 N 14 N 18 O/ 14 N 14 N 16 O (∼0.37/0.37/0.2/100) in nitrous oxide by a laser-spectroscopic method is demonstrated. The abundance ratio is determined fr...
O. Watanabe, J. Jouzel, S. Johnsen, S. Johnsen, F. Parrenin, F. Parrenin, H. Shoji, N. Yoshida, N. Yoshida
Nature   422(6931) 509-512   Apr 2003
Recent ice core studies have raised the disturbing possibility that glacial-interglacial climate changes may be non-uniform across Antarctica. These findings have been confined to records from the Ross Sea sector of the continent, but significant ...
Osamu Abe, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Rapid Communications in Mass Spectrometry   17(5) 395-400   Mar 2003
A method to determine both 17 O/ 16 O and 18 O/ 16 O ratios for molecular oxygen with high precision by direct introduction into the mass spectrometer without gas separation is presented. Because both 17 O/ 16 O and 18 O/ 16 O in mixed gases h...
Funiko Nakagawa, Funiko Nakagawa, Urumu Tsunogai, Urumu Tsunogai, Naohiro Yoshida, Donald D. Adams
Land and Marine Hydrogeology   141-150   Jan 2003
This chapter discusses the stable isotopic compositions of bacterial light hydrocarbons in marginal marine sediments. While methane is the most abundant hydrocarbon in marginal marine sediments, other light hydrocarbons accompany methane in detect...
Keita Yamada, Keita Yamada, Yoko Ozaki, Fumiko Nakagawa, Fumiko Nakagawa, Fumiko Nakagawa, Misato Tanaka, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Atmospheric Environment   37 1975-1982   Jan 2003
Measurement of the hydrogen isotope ratio (D/H ratio) in atmospheric methane by isotope ratio mass spectrometry has been less developed so far, compared to that of the carbon isotope ratio ( 13 C/ 12 C ratio). This is because of the requirement fo...
Takayuki Shiraiwa, Shiro Kohshima, Ryu Uemura, Naohiro Yoshida, Sumito Matoba, Jun Uetake, Maria Angelica Godoi
Annals of Glaciology   35 84-90   Dec 2002
A 45.97 m long ice core was recovered in the accumulation area of Glaciar Tyndall (50°59′05″ S, 73°31′12″ W; 1756 m a.s.l.), Campo de Hielo Patagónico Sur (southern Patagonia icefield), during December 1999. The firn core was subjected to visual s...
Takahito Yoshioka, Takahito Yoshioka, Shingo Ueda, Shingo Ueda, Toshihiro Miyajima, Toshihiro Miyajima, Eitaro Wada, Eitaro Wada, Naohiro Yoshida, Naohiro Yoshida, Atsuko Sugimoto, Pisoot Vijarnsorn, Suporn Boonprakub
Limnology   3(1) 51-59   Dec 2002
Todd Sowers, Amy Rodebaugh, Naohiro Yoshida, Sakne Toyoda
Global Biogeochemical Cycles   16 76-1   Dec 2002
A historical record of changes in the N 2 O isotope composition is important for a better understanding of the biogeochemical cycles involving atmospheric N 2 O. Here we combine measurements of trapped gases in the Greenland Ice Sheet Project II (...
Brian N. Popp, Marian B. Westley, Sakae Toyoda, Sakae Toyoda, Tatsuya Miwa, Tatsuya Miwa, John E. Dore, Naohiro Yoshida, Naohiro Yoshida, Terri M. Rust, Francis J. Sansone, Mary E. Russ, Nathaniel E. Ostrom, Peggy H. Ostrom
Global Biogeochemical Cycles   16 12-1   Dec 2002
Although the oceans are a significant source of the greenhouse gas nitrous oxide (N 2 O) to the atmosphere, the magnitude and characteristics of this source are poorly constrained. We present here stable isotope and isotopomer (intramolecular dist...
Fumiko Nakagawa, Naohiro Yoshida, Atsuko Sugimoto, Eitaro Wada, Takahito Yoshioka, Shingo Ueda, Pisoot Vijarnsorn
Biogeochemistry   61 1-19   Oct 2002
Stable isotopes (δ 13 C, δD) and radiocarbon were measured in methane bubbles emitted from rice paddies and swamps in southern Thailand. Methane emitted from the Thai rice paddies was enriched in 13 C (mean δ 13 C; -51.5 ± 7.1‰ and -56.5 ± 4.6‰ fo...
Fumiko Nakagawa, Naohiro Yoshida, Yukihiro Nojiri, Vladimir N. Makarov
Global Biogeochemical Cycles   16 14-1   Sep 2002
The radiocarbon ( 14 C) and stable isotopic ( 13 C and D) compositions of methane and carbon dioxide from alasses (typical landforms in permafrost terrain, consisting of lakes and wetlands) were measured around Yakutsk, eastern Siberia, where few ...
U. Tsunogai, U. Tsunogai, U. Tsunogai, N. Yoshida, N. Yoshida, N. Yoshida, T. Gamo
Marine Geology   187(1/2) 145-160   Jul 2002
During the Kaiko-Tokai project, we took a total of 15 near-surface sediment push cores from inside and outside seafloor clam colonies and bacterial mats in the Nankai Trough. In this study, we present the chemical and isotopic composition of pore ...
Keita Yamada, Keita Yamada, Misato Tanaka, Fumiko Nakagawa, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida
Rapid Communications in Mass Spectrometry   16(11) 1059-1064   Jun 2002
Molecular and intramolecular carbon isotope measurements of acetic acid present in natural environments have been performed by off-line procedures. The off-line method is complicated and time-consuming and requires micromolar to millimolar amounts...
Maki Morimoto, Osamu Abe, Hajime Kayanne, Naoyuki Kurita, Eiji Matsumoto, Naohiro Yoshida
Geophysical Research Letters   29 35-1   Jun 2002
Seasonal sea surface salinity (SSS) records can be of great value in reconstructing El Niño/Southern Oscillation (ENSO) variability in the equatorial Western and Central Pacific, a region where ENSO-related evaporation and precipitation (E-P) chan...
Hiroshi A. Takahashi, Eiichi Konohira, Tetsuya Hiyama, Masayo Minami, Toshio Nakamura, Naohiro Yoshida
Tellus, Series B: Chemical and Physical Meteorology   54B(2) 97-109   Apr 2002
Diurnal variation in the atmospheric CO 2 concentration and the carbon isotopic composition (Δ 14 C and δ 13 C) was measured in a forest in an urban area on 9 February 1999. The carbon isotope approach used in the present study differentiated bet...
Sakae Toyoda, Naohiro Yoshida, Tatsuya Miwa, Yohei Matsui, Hiroaki Yamagishi, Urumu Tsunogai, Yukihiro Nojiri, Nobuo Tsurushima
Geophysical Research Letters   29 7-1   Feb 2002
We measured the intramolecular distribution of 15 N as well as conventional nitrogen and oxygen isotope ratios in oceanic nitrous oxide (N 2 O) in the western North Pacific for the first time. In contrast to a nearly homogeneous vertical distribu...
Takuya Saito, Urumu Tsunogai, Kimitaka Kawamura, Takeshi Nakatsuka, Naohiro Yoshida, Naohiro Yoshida
Journal of Geophysical Research Atmospheres   107(D4) 2-1-2-9   Jan 2002
Light hydrocarbons collected over the Western North Pacific in canisters during an oceanographic cruise in May 1999 were analyzed for the mixing ratios and the stable carbon isotopic compositions (δ < sup > 13 < /sup > C). Their mixing ratios decr...
S. Yamulki, S. Toyoda, S. Toyoda, N. Yoshida, N. Yoshida, E. Veldkamp, B. Grant, R. Bol
Rapid Communications in Mass Spectrometry   15(15) 1263-1269   Aug 2001
There is an urgent need to provide an accurate, up-to-date estimate of N 2 O fluxes in order that national policies can be developed to reduce emissions of N 2 O from soils. There are only limited data on temporal and diurnal patterns of N 2 O flu...
Sakaè Toyoda, Sakaè Toyoda, Sakaè Toyoda, Naohiro Yoshida, Naohiro Yoshida, Naohiro Yoshida, Taichiro Urabe, Taichiro Urabe, Shuji Aoki, Shuji Aoki, Takakiyo Nakazawa, Takakiyo Nakazawa, Satoshi Sugawara, Satoshi Sugawara, Hideyuki Honda, Hideyuki Honda
Journal of Geophysical Research Atmospheres   106 7515-7522   Apr 2001
The vertical distribution of isotopomers of N < inf > 2 < /inf > O ( < sup > 14 < /sup > N < sup > 15 < /sup > N < sup > 16 < /sup > O, < sup > 15 < /sup > N < sup > 14 < /sup > N < sup > 16 < /sup > O, and < sup > 14 < /sup > N < sup > 14 < /su...
K. Uehara, K. Yamamoto, K. Yamamoto, T. Kikugawa, N. Yoshida
Sensors and Actuators, B: Chemical   74 173-178   Apr 2001
We demonstrate a new method of absorption spectroscopy for precise isotopic composition measurements of environmental molecules such as 13 CH 4 / 12 CH 4 (∼1/100) and 15 N 14 N 16 O/ 14 N 15 N 16 O/ 14 N 14 N 16 O (∼0.4/0.4/100). We combined w...

Books etc

 
Hydrogen and Oxygen Isotopes in Hydrology
Yoshida, N. Ed., UNESCO   2002   
Site-specific nitrogen isotope analysis in N_2_O by mass spectrometry
Elsevier   2004   
Stable isotopic compositions of bacterial light hydrocarbons in marginal marine sediments
In: Land and marine hydrogeology (eds. M. Taniguchi, K. Wang, T. Gamo), Elsevier Science   2003   
Proceedings of the 1st International Symposium on Isotopomers
Yoshida, N. Ed., Proceedings of the 1st International Symposium on Isotopomers   2002   
Chapter 13. Methods of sampling, measurement and data processing for hydrogen and oxygen isotopic composition in rainwater
Yoshida, N. Ed., Hydrogen and Oxygen Isotopes in Hydrology, HyARC, Nagoya U. and UNESCO   2002   

Conference Activities & Talks

 
Isotopomer studies to trace water and material cycles featuring some extreme environments
Institute of Low Temperature Science International Symposium   2009   
Isotopic fractionation of atmospheric OCS reactions
2009   
Doubly substituted isotopomer analysis for carbonate leotemperature and latitudinal reconstruction of Indian plate during Phanerozoic period
2009   
Investigation of methane emission during sewage water treatment in Japan through carbon isotope ratio
2009   
Nitrogen dynamics in a sub-tropical forest in south China
4th International Symposium on Isotopomers   2008   

Works

 
Isotope and isotopomer studies on the emission of greenhouse gases from Adriatic Sea
2000 - 2000
Geochemical Study of CH┣D24┫D2 on and over Siberia
1994 - 1994
Hydrological Survey of Tropical Wetlands in the Southern Thailand
1990 - 1990
Isotope Studies of CH┣D24┫D2 and N┣D22┫D2O in the Tropical Wetlands in the Southern Thailand
1993 - 1993
Geochemical Study on CH┣D24┫D2 in Siberia
1993 - 1993

Research Grants & Projects

 
Isotopomer material cycle analysis
Material cycle analysis with isotopomers and bioelement stable isotopes.
Isotope Geochemistry of Cycles of Greenhouse Gases
Geochemical cycle analysis of global warming gases with their light element stable isotope ratios.
Isotope Geochemistry of Environmental Change
Global environmental change analysis with light element stable isotope ratios

Patents

 
吉田 尚弘, 木村 宏一, 小泉 英明, 加藤 義昭, 坂入 実
吉田 尚弘, 木村 宏一, 小泉 英明, 加藤 義昭, 坂入 実