Isotopic composition of dissolved inorganic carbon in subsurface sediments of gas hydrate-bearing mud volcanoes, Lake Baikal: implications for methane and carbonate origin

Autor: Hirotsugu Minami, Lieven Naudts, Yutaka Nunokawa, Oleg Khlystov, G. V. Kalmychkov, Hitoshi Shoji, Alexey Krylov, Masato Kida, Jeffrey Poort, T. V. Pogodaeva, Tamara I. Zemskaya, Akihiro Hachikubo

Publikováno v: Geo-Marine Letters
Geo-Marine Letters, Springer Verlag, 2010, 30, pp.427-437. ⟨10.1007/s00367-010-0190-2⟩
Geo-Marine Letters, 2010, 30, pp.427-437. ⟨10.1007/s00367-010-0190-2⟩

International audience; We report on the isotopic composition of dissolved inorganic carbon (DIC) in pore-water samples recovered by gravity coring from near-bottom sediments at gas hydrate-bearing mud volcanoes/gas flares (Malenky, Peschanka, Pescha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f64c9aa16a7103a8092be03d8e234ad8
https://doi.org/10.1007/s00367-010-0190-2

Isotopic Composition and Crystallographic Properties of Gas Hydrate in the Sea of Okhotsk

Autor: Hirotsugu Minami, Hitoshi Shoji, Anatoly Obzhirov, Hirotoshi Sakagami, Yutaka Nunokawa, Akihiro Hachikubo, Tatiana Matveeva, Young K. Jin

Publikováno v: Chigaku Zasshi (Jounal of Geography). 118:207-221

New hydrate-bearing seepage structures off Sakhalin in the Sea of Okhotsk were investigated from 2003 to 2006 within the framework of the CHAOS project. We obtained samples of natural gas hydrate and measured the molecular and isotopic compositions o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::de1cab8c6f47d0a50917866d73d32b7e
https://doi.org/10.5026/jgeography.118.207

ChemInform Abstract: A Remarkably Efficient Initiation by 9-BBN in the Radical Addition Reactions of Alkanethiols to Alk-1-enes

Autor: Akira Arase, Yutaka Nunokawa, Masayuki Hoshi, Yuzuru Masuda

Publikováno v: ChemInform. 23

A catalytic amount of 9-borabicyclo[3.3.1]nonane (9-BBN) initiates radical addition reactions of alkanethiols to alkenes under very mild conditions to provide the corresponding dialkyl sulphides almost quantitatively.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25af30a6412dc0e29994b31540d39f79
https://doi.org/10.1002/chin.199215122

Molecular and isotopic characteristics of gas hydrate-bound hydrocarbons in southern and central Lake Baikal

Autor: Hitoshi Shoji, Hirotoshi Sakagami, Satoshi Yamashita, Nobuo Takahashi, Masato Kida, Takao Ebinuma, Akihiro Hachikubo, Hirotsugu Minami, Gennadiy Kalmychkov, Jeffrey Poort, Shinya Nishio, Yutaka Nunokawa, Alexey Krylov, Oleg Khlystov

Publikováno v: Geo-Marine Letters
Geo-Marine Letters, Springer Verlag, 2010, 30, pp.321-329. ⟨10.1007/s00367-010-0203-1⟩
Geo-Marine Letters, 2010, 30, pp.321-329. ⟨10.1007/s00367-010-0203-1⟩

We investigated the molecular composition (methane, ethane, and propane) and stable isotope composition (methane and ethane) of hydrate-bound gas in sediments of Lake Baikal. Hydrate-bearing sediment cores were retrieved from eight gas seep sites, lo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c3abafee4ca1c6928e18075ef1c9f32
https://hal.archives-ouvertes.fr/hal-00661603

Lithium triethylborohydride-promoted hydroboration of alkenes with dialkoxyboranes

Autor: Akira Arase, Yuzuru Masuda, Yutaka Nunokawa, Masayuki Hoshi

Publikováno v: Journal of the Chemical Society, Chemical Communications. :51

In the presence of a catalytic amount of lithium triethylborohydride (LiBEt3H) the hydroboration of alkenes with dialkoxyboranes is promoted markedly to provide the hydroboration products almost quantitavely under mild reaction conditions.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eb3bc1d554ba5562eb3375b0db9772bf
https://doi.org/10.1039/c39920000051