Hiroshi Ohtani
Tohoku University
151 Papers
965 Citations
Hiroshi Ohtani is an academic researcher from Tohoku University. The author has contributed to research in topics: CALPHAD & Phase diagram. The author has an hindex of 36, co-authored 142 publications. Previous affiliations of Hiroshi Ohtani include Kyushu Institute of Technology & Royal Institute of Technology.
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Papers
•Journal Article
Copper-62-ATSM: A New Hypoxia Imaging Agent with High Membrane Permeability and Low Redox Potential
Yasuhisa Fujibayashi,Hideyuki Taniuchi,Yoshiharu Yonekura,Hiroshi Ohtani,Junji Konishi,Akira Yokoyama +5 more
TL;DR: Retention of 62Cu-ATSM was studied serially in perfused rat hearts under conditions of normoxia, hypoxia and reoxygenation, and retention was increased markedly under hypoxic conditions, with inversely correlated with accumulation of 201Tl, a relative myocardial blood flow marker.
498
Phase equilibria in the Fe-Co binary system
Ikuo Ohnuma,Hirotoshi Enoki,Osamu Ikeda,Ryosuke Kainuma,Hiroshi Ohtani,Bo Sundman,Kiyohito Ishida +6 more
TL;DR: In this article, the phase equilibria of the FeCo system between 400 and 800°C were determined by means of lattice parameter measurement using thin film specimens, and it was confirmed that the α+γ two-phase region extends below the temperature at which the α (A2)/α′ (B2) transus meets the α/α+γ boundary.
273
•Journal Article
Metabolic activity in the areas of new fill-in after thallium-201 reinjection: comparison with positron emission tomography using fluorine-18-deoxyglucose.
Nagara Tamaki,Hiroshi Ohtani,Keiji Yamashita,Yasuhiro Magata,Yoshiharu Yonekura,Ryuji Nohara,Hirofumi Kambara,Chuichi Kawai,Kazuo Hirata,Toshihiko Ban,Junji Konishi +10 more
TL;DR: Reinjection thallium imaging still underestimates the extent of tissue viability compared to PET imaging, but the segments showing new fill-in after reinjection are PET viable myocardium.
212
A binary database for III–V compound semiconductor systems
Ibrahim Ansara,Christian Chatillon,Hans Leo Lukas,Taiji Nishizawa,Hiroshi Ohtani,Kiyohito Ishida,Mats Hillert,Bo Sundman,B.B. Argent,A. Watson,Tim Chart,Timothy J. Anderson +11 more
TL;DR: A thermodynamic database for binary III-V semiconductor systems has been compiled based upon individual assessments which have been or will be published separately, but each assessment is based on the SGTE recommendation for the pure elements and uses the same solution model expression.
180
Thermodynamic study of phase equilibria in the Pb-Sn-Sb system
TL;DR: In this paper, a regular solution approximation based on a two-sublattice model was adopted to describe the Gibbs energy of formation of the individual phases in binary and ternary systems.
173