著者
Miyaura Norio Yamada Kinji Suzuki Akira
出版者
Pergamon Press
雑誌
Tetrahedron Letters (ISSN:00404039)
巻号頁・発行日
vol.20, no.36, pp.3437-3440, 1979
被引用文献数
1797

The representative (E)-1-alkenyldisiamylboranes and (E)-1-alkenyl-1,3,2-benzodioxaboroles readily obtainable Image hydroboration of 1-alkynes react with 1-alkenyl halides or 1-alkynyl halides in the presence of a catalytic amount of tetrakis(triphenylphosphine)palladium and base to give corresponding conjugated (E)-dienes or (E)-enynes with high regio- and stereospecificity in good yields, respectively.
著者
Omori Saori Mabe Katsuhiro Hatanaka Kanako Ono Masayoshi Matsumoto Mio Takahashi Masakazu Yoshida Takeshi Ono Shoko Shimizu Yuichi Sugai Nozomi Suzuki Akira Katsuki Shinichi Fujii Takahiro Kato Mototsugu Asaka Masahiro Sakamoto Naoya
出版者
Elsevier
雑誌
Pathology, Research and Practice (ISSN:03440338)
巻号頁・発行日
vol.210, no.7, pp.440-443, 2014-07
被引用文献数
14

It remains unclear whether or not human intestinal spirochetosis (HIS) has any associated symptoms or lesions. In this study, we assessed the prevalence of HIS in sessile serrated adenomas/polyps (SSA/Ps) and their possible association. Following identification of early cecal cancer with SSA/P accompanied by a colonization of HIS, we went on to conduct a retrospective case-control study using endoscopically resected SSA/P specimens to examine the frequency of HIS infection in SSA/Ps. Nineteen SSA/P cases and 172 controls were obtained. The rate of HIS infection was significantly higher at 52.6% (10/19) in the SSA/P cases compared to the controls at 8.1% (14/172). Our SSA/P series were associated with a remarkably higher rate of HIS than controls or than previously reported. This is the first report to provide evidence for potential association between HIS and SSA/Ps. (C) 2014 Elsevier GmbH. All rights reserved.
著者
Sato Yosuke Inoue Shutaro Suzuki Akira Nabeshima Katsusuke Sakai Ko
出版者
Elsevier Ltd.
雑誌
Journal of symbolic computation (ISSN:07477171)
巻号頁・発行日
vol.46, no.5, pp.622-632, 2011-05
被引用文献数
12 16

In recent years, Boolean Gröbner bases have attracted the attention of many researchers, mainly in connection with cryptography. Several sophisticated methods have been developed for the computation of Boolean Gröbner bases. However, most of them only deal with Boolean polynomial rings over the simplest coefficient Boolean ring View the MathML source. Boolean Gröbner bases for arbitrary coefficient Boolean rings were first introduced by two of the authors almost two decades ago. While the work is not well-known among computer algebra researchers, recent active work on Boolean Gröbner bases inspired us to return to their development. In this paper, we introduce our work on Boolean Gröbner bases with arbitrary coefficient Boolean rings.