Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Kazuhiko Shimada"'
Autor:
Tatsuo Nozaki, Kosuke T. Goto, Yutaro Takaya, Kazuhiko Shimada, Akira Owada, Gen Shimoda, Jun-Ichi Kimura, Qing Chang, Tetsuji Onoue, Shiki Machida, Teruaki Ishii, Kenji Shimizu, Naoto Hirano, Kazuhide Mimura, Moei Yano, Junichiro Ohta, Yasuhiro Kato
Publikováno v:
Journal of Asian Earth Sciences: X, Vol 11, Iss , Pp 100176- (2024)
The area offshore of Minamitorishima Island, Northwestern Pacific Ocean, contains large amounts of seafloor mineral resources such as ferromanganese (Fe–Mn) nodules, Fe–Mn crusts, and rare-earth element and yttrium (REY)-rich muds. In this study,
Externí odkaz:
https://doaj.org/article/18712854c178422fb34b250827d902cb
Publikováno v:
Earth, Planets and Space, Vol 74, Iss 1, Pp 1-13 (2022)
Abstract The Hayabusa2 spacecraft succeeded in sampling and returning materials from the C-type, near-Earth asteroid (162173) Ryugu. As part of the Hayabusa2 Initial Analyses, chemical and isotopic compositions of volatile species were measured. The
Externí odkaz:
https://doaj.org/article/57cd795c4c284f79882eac33644ac97d
Autor:
Shuichi Ogawa, Yusuke Atsuki, Kazuhiko Shimada, Mitsuhiro Motoyama, Tatsuya Suzuki, Hiroyuki Fujiwara
Publikováno v:
Reproductive Medicine and Biology, Vol 20, Iss 4, Pp 460-466 (2021)
Abstract Purpose To determine the contributing factor in infertility treatment with laparoscopic ovarian drilling (LOD) to the decrease in serum anti‐Müllerian hormone (AMH) levels in patients with polycystic ovarian syndrome using an ultrasonical
Externí odkaz:
https://doaj.org/article/aeb591c1e9b14ff4ae116ad062742fe6
Publikováno v:
Earth, Planets and Space, Vol 70, Iss 1, Pp 1-14 (2018)
Abstract Seafloor hydrothermal systems in the back-arc region of the Okinawa Trough have been viewed as a modern analogue to the Kuroko-type volcanogenic massive sulfide deposits. Detection of magnetic signatures is widely utilized and assumed to fac
Externí odkaz:
https://doaj.org/article/5fedb7a708fb409cb86f3202dbda6d68
Autor:
Shigeshi Fuchida, Jun-ichiro Ishibashi, Kazuhiko Shimada, Tatsuo Nozaki, Hidenori Kumagai, Masanobu Kawachi, Yoshitaka Matsushita, Hiroshi Koshikawa
Publikováno v:
Geochemical Transactions, Vol 19, Iss 1, Pp 1-15 (2018)
Abstract We observed the initial release rate of metals from four fresh (i.e., without long time exposure to the atmosphere) hydrothermal sulfide cores into artificial seawater. The sulfide samples were collected by seafloor drilling from the Okinawa
Externí odkaz:
https://doaj.org/article/9b8d2efa4ecb4d648511801931c367a0
Autor:
Naoko Okibe, Kaito Hayashi, Keishi Oyama, Kazuhiko Shimada, Yuji Aoki, Takahiro Suwa, Tsuyoshi Hirajima
Publikováno v:
Minerals, Vol 12, Iss 4, p 449 (2022)
Bioleaching of arsenic (As)-rich, so-called “dirty” concentrates can produce additional Cu value from the flotation waste while simultaneously releasing toxic As. This study bioleached three such concentrates of varying pyrite/enargite ratios ([P
Externí odkaz:
https://doaj.org/article/1e772d24cae94e219667563b025237e5
Autor:
Kazumitsu Yamasaki, Kaoru Yoshida, Miki Yoshiike, Kazuhiko Shimada, Hiroyuki Nishiyama, Satoru Takamizawa, Kaoru Yanagida, Teruaki Iwamoto
Publikováno v:
Basic and Clinical Andrology, Vol 27, Iss 1, Pp 1-8 (2017)
Résumé Contexte Les séménogélines (SEMG) sont des composantes principales des sécrétions des vésicules séminales humaines. En raison de la présence sur SEMG d’un inhibiteur de la mobilité des spermatozoïdes, une corrélation significati
Externí odkaz:
https://doaj.org/article/8c69d0d3baab497fa895ee7963b798c6
Dust is one of primary sources of new elements to oceanic water, but understanding of their dissolution behavior is still elusive1. Here we report evidence showing that diatoms are actively associated with the dissolution of silicate minerals. The cu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85a89f870aa1056e8e967b525ff893c8
https://doi.org/10.21203/rs.3.rs-2673880/v1
https://doi.org/10.21203/rs.3.rs-2673880/v1
The Hayabusa2 spacecraft succeeded in sampling and returning asteroidal materials from the C-type near-Earth asteroid (162173) Ryugu. As part of the Hayabusa2 Initial Analyses, chemical compositions and isotopic ratios of volatile species were measur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45fc2bfc8804029b6863a2cce35ae42f
https://doi.org/10.21203/rs.3.rs-1825877/v1
https://doi.org/10.21203/rs.3.rs-1825877/v1
Autor:
Hirajima, Naoko Okibe, Kaito Hayashi, Keishi Oyama, Kazuhiko Shimada, Yuji Aoki, Takahiro Suwa, Tsuyoshi
Publikováno v:
Minerals; Volume 12; Issue 4; Pages: 449
Bioleaching of arsenic (As)-rich, so-called “dirty” concentrates can produce additional Cu value from the flotation waste while simultaneously releasing toxic As. This study bioleached three such concentrates of varying pyrite/enargite ratios ([P