Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Keiichiro Ohnishi"'
Autor:
Michiru Yamashita, Mitsuyasu Yatsuzuka, Keiichiro Ohnishi, Mitsumasa Sakao, Kohei Sawachika, Keiichi Asami, Tomoya Kuroshima, Yoshihiro Oka
Publikováno v:
Vacuum. 167:530-535
A silver nanocolloidal solution was prepared by a cavitation bubble plasma with a pair of silver rod electrodes in a sodium hydroxide water solution with the initial pH = 11.0. The cavitation bubble plasma was generated by the bipolar high voltage pu
Autor:
Mitsuyasu Yatsuzuka, Katsuhiko Yonezawa, Keiichi Asami, Yoshimi Nishimura, Tatsuya Nakamura, Keiichiro Ohnishi, Tomohiro Hashimoto, Mitsuhiro Suyama, Yoshihiro Oka
Publikováno v:
Vacuum. 136:209-213
High-speed and homogeneous water-dispersion of carbon nano tubes (CNTs) with superior characteristics is a key technology for industrial applications. Liquid-phase plasma is one of good method to disperse CNTs in aqueous solution. However, the treatm
Autor:
Yuka Matsumoto, Keiichiro Ohnishi, Yoshitsugu Sakaki, Yoshiyuki Morikawa, Rikisaku Suemitsu, Masayuki Horiuchi
Publikováno v:
Bioscience, biotechnology, and biochemistry. 57(2)
Publikováno v:
Bioscience, biotechnology, and biochemistry. 56(6)
Autor:
Keiichiro Ohnishi, Masayuki Horiuchi, Kenji Tounai, Noriyasu Iwase, Yoshikazu Nakajima, Yasumasa Yamada, Masakazu Yamashita
Publikováno v:
Bioscience, Biotechnology, and Biochemistry. 67:1580-1583
Novel zinniol-related compound 3, named porritoxin sulfonic acid, with an isoindoline skeleton was isolated from the culture liquid of Alternaria porri. The structure was determined to be 2-(2"-sulfoethyl)-4-methoxy-5-methyl-6-(3'-methyl-2'-butenylox
Publikováno v:
Journal of Chromatography A. 539:211-214
Tentoxin is an interesting non-specific toxin produced by some Alternaria species, known as pathogenic organisms. The high-performance liquid chromatographic determination of tentoxin by using a YMCA-312 column, a reversed type of octadecylsilica, wi
Publikováno v:
Journal of Chromatography A. 503:282-287
Autor:
Takashi Maoka, Harukuni Tokuda, Masayuki Horiuchi, Keiichiro Ohnishi, Hoyoku Nishino, Masakazu Yamashita
Publikováno v:
Natural product research. 20(2)
To search for possible cancer chemopreventive agents from natural sources, we performed primary screening of metabolites of Alternaria porri by examining their possible inhibitory effects on Epstein-Barr virus early antigen (EBV-EA) activation induce
Publikováno v:
Phytochemistry. 38:495-497
The structures of two metabolites, isolated from the culture liquid of Alternaria porri , have been identified as zinnimidine and 5-(3′,3′-dimethylallyloxy)-7-methoxy-6-methylphthalide. The latter is the first reported isolation as a naturally oc
Publikováno v:
Phytochemistry. 35:603-605
The culture liquid of Alternaria porri afforded a novel benzoxazoeine derivative, porritoxin, whose structure was determined by spectroscopic methods. It inhibited seedling growth in lettuce at a concentration of 10 ppm.