Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Takayuki Kitazawa"'
Publikováno v:
China Foundry, Vol 8, Iss 1, Pp 96-100 (2011)
The thirteen mother alloys, C%+1/3Si% = 4.45%, differing in their Si, Ce, Sb and Sn contents, were prepared. Seventy grams of these alloys was remelted in a high purity alumina crucible at 1,450℃ under an Ar atmosphere, and then cooled at 30 K/min
Externí odkaz:
https://doaj.org/article/721ea85736de45ee96eda962c3a9b7f6
Publikováno v:
China Foundry, Vol 4, Iss 1, Pp 34-37 (2007)
The shrinkage and chilling tendency of spheroidal graphite (abbreviated SG) cast iron is much greater than that of the flake graphite cast iron in spite of its higher amount of C and Si contents. Why? The main reason should be the difference in their
Externí odkaz:
https://doaj.org/article/1e054fd33f2f4d09b782b420e94aec63
Autor:
Qinye Zhu, Hiroo Wada, Keisike Onuki, Takayuki Kitazawa, Ritsuko Furuya, Mariko Miyakawa, Setsuko Sato, Naohiro Yonemoto, Yuito Ueda, Hiroshi Nakano, David Gozal, Takeshi Tanigawa
Publikováno v:
Sleep medicine. 101
This study aimed to evaluate the validity and reliability of the Japanese version of the severity hierarchy score (J-SHS) in the screening of pediatric obstructive sleep apnea (OSA) among Japanese community children.A total of 922 children from eleme
Autor:
Qinye Zhu, Hiroo Wada, Keisike Onuki, Takayuki Kitazawa, Ritsuko Furuya, Mariko Miyakawa, Setsuko Sato, Naohiro Yonemoto, Yuito Ueda, Hiroshi Nakano, David Gozal, Takeshi Tanigawa
Publikováno v:
Sleep Medicine. 105:36
Publikováno v:
BIOMATERIALS. 29(4):407-417
The complement system is strongly activated by surfaces carrying nucleophilic groups, such as hydroxyl (OH) groups, and triggered by deposition of complement protein fragment, C3b. Surfaces carrying amino groups, the other representative nucleophilic
Publikováno v:
Tetrahedron Letters. 40:2161-2164
In the presence of a catalytic amount of a zirconium-bis(binaphthol)methane complex (5), Mannich-type reactions of aldimines with silyl enolates proceeded smoothly to afford the corresponding adducts in high yields with high enantiomeric excesses. (R
Publikováno v:
ChemInform. 30
In the presence of a catalytic amount of a zirconium-bis(binaphthol)methane complex (5), Mannich-type reactions of aldimines with silyl enolates proceeded smoothly to afford the corresponding adducts in high yields with high enantiomeric excesses. (R
Publikováno v:
ChemInform. 40
A new method for the synthesis of dihydropyridin-2-ones from various N-2-nitrobenzenesulfonyl (nosyl) imines and 1,3-diethoxy-1-trimethylsiloxy-l,3-butadiene (Brassard's diene) under weakly-basic conditions is described. This synthesis of dihydropyri
Publikováno v:
ChemInform. 39
Aza-Diels-Alder type reactions of various imines with 1-methoxy-3-trimethylsilyloxy-1,3-butadiene (Danishefsky's diene) derivatives catalyzed by Lewis bases such as lithium methoxide are described. The reaction proceeds via a stepwise pathway, i.e. f
Autor:
Takayuki Kitazawa, Teruaki Mukaiyama
Publikováno v:
ChemInform. 38
Alkoxy anion such as methoxide anion works effectively as Lewis base catalyst to activate silicon-carbon bond of 1-methoxy-3-trimethylsilyl-oxy-1,3-butadiens (Danishefsky's dienes) in the reaction between aldehydes and ketones. By using Lewis base as