Search

Your search keyword '"Tada, Masahiro"' showing total 138 results
Start Over Author "Tada, Masahiro" Search Limiters Available in Library Collection
138 results on '"Tada, Masahiro"'

12. A Deep Learning System to Diagnose COVID-19 Pneumonia Using Masked Lung CT Images to Avoid AI-generated COVID-19 Diagnoses that Include Data outside the Lungs

Author

Nagaoka, Takashi, primary, Kozuka, Takenori, additional, Yamada, Takahiro, additional, Habe, Hitoshi, additional, Nemoto, Mitsutaka, additional, Tada, Masahiro, additional, Abe, Koji, additional, Handa, Hisashi, additional, Yoshida, Hisashi, additional, Ishii, Kazunari, additional, and Kimura, Yuichi, additional

Published
2022
Full Text
View/download PDF

25. Dihydrobenzofuran synthesis by an anodic [3 + 2] cycloaddition of phenols and unactivated alkenes

Author

Chiba, Kazuhiro, Fukuda, Miho, Kim, Shokaku, Kitano, Yoshikazu, and Tada, Masahiro

Subjects
Dibenzofurans -- Research, Ring formation (Chemistry) -- Research, Organic compounds -- Synthesis, Biological sciences, Chemistry
Abstract

A method of synthesizing dihydrobenzofurans is described involving the cycloaddition of electrogenerated phenoxonium cations with unactivated alkenes. The aliphatic alkenes act as the nucleophile and the overoxidation of products is avoided.

Published
1999

27. Novel Antioxidants Isolated from Perilla frutescens Britton var. crispa (Thunb.)

Author

Chiba Kazuhiro, Tada Masahiro, Matsumoto Risa, and Yamaguchi Harutaka

Subjects
food.ingredient, Antioxidant, Stereochemistry, medicine.medical_treatment, Applied Microbiology and Biotechnology, Biochemistry, Analytical Chemistry, law.invention, chemistry.chemical_compound, food, law, medicine, Methyl caffeate, Caffeic acid, Food science, Molecular Biology, Essential oil, Perilla frutescens, biology, Food additive, Rosmarinic acid, Organic Chemistry, General Medicine, Perillaldehyde, biology.organism_classification, chemistry, Biotechnology
Abstract

Two novel antioxidants (vinyl caffeate and trans-p-menth-8-en-7-yl caffeate) and seven known antioxidants (3,4-dihydroxybenzaldehyde, methyl 3,4-dihydroxy-benzoate, methyl caffeate, 3',4',5,7-tetra-hydroxy-flavone, caffeic acid, 6,7-dihydroxycoumarin, and rosmarinic acid) were isolated from Perilla frutescens Britton var. crispa (Thunb.). The redox potentials of the novel isolated antioxidative compounds were comparable to those of known antioxidants. trans-p-menth-8-en-7-yl caffeate was effective to prevent the oxidative degradation of perillaldehyde in the essential oil of P. frutescens.

Published
2016

38. Effects of different PPIs, genetic difference in CYP2C19 status and antibiotic susceptibility patterns on the cure rate of H. pylori infection by one-week triple therapy: Results of a radomized trial in Japan

Author

Kawabata, Hideaki, primary, Hayakumo, Takanobu, additional, Nakajima, Masatugu, additional, Tada, Masahiro, additional, Mizuno, Shigeto, additional, Kimoto, Kunihilfo, additional, Kobayashi, Masao, additional, Habu, Yasuki, additional, Kiyota, Keisuke, additional, Inokuchi, Hideto, additional, and Kawai, Keiichi, additional

Published
2001
Full Text
View/download PDF

47. Effect of Ionic Radius and Resultant Two-Dimensionality of Phonons on Thermal Conductivity in MCoO (M = Li, Na, K) by Perturbed Molecular Dynamics.

Author

Tada, Masahiro, Yoshiya, Masato, and Yasuda, Hideyuki

Subjects
PHONONS, THERMAL conductivity, MOLECULAR dynamics, ALKALI metals, NUMERICAL analysis, IONS
Abstract

Phonon thermal conductivity calculations for LiCoO, NaCoO, and KCoO ( x = 1, 0.5) have been carried out by perturbed molecular dynamics to clarify the dependence of thermal conductivity on alkali-metal vacancy concentration in these materials. While thermal conductivity decreased for all compounds upon introduction of alkali-metal vacancies, the magnitude of the decrease is strongly dependent on the size of the alkali-metal ion. Further numerical analyses using fictitious physical parameters reveal that, with increasing ionic radius, the two-dimensionality of the phonons in the CoO layers, which are responsible for overall thermal conductivity, is enhanced, resulting in lower thermal conductivity in vacancy-free compounds as well as ineffectiveness of alkali-metal vacancies in lowering thermal conductivity. In contrast, for systems with smaller alkali-metal ionic radius, even though higher thermal conductivity is predicted when no vacancies are present, vacancies are quite effective in significantly lowering thermal conductivity by modifying phonon states in the CoO layers, more so than in systems with larger alkali-metal vacancies. [ABSTRACT FROM AUTHOR]

Published
2010
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results