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Radical Cation Diels-Alder Reactions of Non-Conjugated Alkenes as Dienophiles by Electrocatalysis

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Chinese Journal of Chemistry 2019年第6期37卷 561-564页

作者： Atsushi Ozaki Yusuke yamaguchi Yohei Okada Kazuhiro Chiba Department of Applied Biological Science Tokyo University of Agriculture and Technology3-5-8 Saiwai-choFuchuTokyo 183-8509Japan Department of Chemical Engineering Tokyo University of Agriculture and Technology2-24-16 Naka-choKoganeiTokyo 184-8588Japan

Radical cation Diels-Alder reactions provide a powerful method for the construction of six-membered ring systems between both electron-rich dienes and dienophiles. However, the most recent examples of this class have been limited to β-methylstyrenes as dienophiles;the use of non-conjugated alkenes remains challenging. The present study describes the serendipitous development of novel radical cation Diels-Alder reactions by electrocatalysis that use non-conjugated alkenes as dienophiles. The key to successful transformation involves highly substituted cyclohexenyl radical cations that are stable enough to be reduced by intermolecular single electron transfer.

关键词： radical cation Diels-Alder reaction non-conjugated alkene electrochemistry single electron transfer

Excision of a large abdominal wall lipoma improved bowel passage in a Proteus syndrome patient

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World Journal of Gastroenterology 2009年第26期15卷 3312-3314页

作者： Yoshifumi Nakayama Shinichi Kusuda Naoki Nagata Koji yamaguchi Department of Surgery 1 School of MedicineUniversity of Occupational and Environmental Health Department of Surgery Moji Medical Center Department of Surgery Kitakyushu General Hospital

Proteus syndrome is an extremely rare congenital disorder that produces multifocal overgrowth of tissue. This report presents a surgical case of a large lipoma in the abdominal wall of a patient with Proteus syndrome. She was diagnosed with Proteus syndrome based on certain diagnostic criteria. The neoplasm increased in size gradually, producing hemihypertrophy of her left lower extremity and trunk, and spread to her retroperitoneum and her left abdominal wall. She experienced gradually progressive constipation, nausea, vomiting, and abdominal pain. Computed tomography （CT） of the abdomen demonstrated a large mass in the subcutaneous adipose tissue of the left lower abdominal wall which measured 12 cm×8 cm×6 cm in diameter and encased the left colon. This mass in the abdominal wall was excised. The weight of the excised mass was 1550 g. The histopathological diagnosis of this mass was lipoma. After surgery, the encasement of the left colon was improved, and the patient was able to move her bowels twice per day. The excision of the large lipoma in the abdominal wall contributed to the improved bowel passage in this patient with Proteus syndrome.

关键词： Proteus syndrome Lipoma Bowel obstruction Abdominal wall Bowel passage

DISCOVERY OF β-LACTAM ANTIBIOTICS WITH NOVEL NUCLEI

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中国抗生素杂志 1984年第1期9卷 67-82页

作者： akira Imada Biology Laboratories Central Research Division Japan Ltd Juso Osaka 532 Takeda Chemical Industries Yodogawa-ku

The discovery of penicillin in1929,and cephalosporin in 1956 leadto the development of new semisynthetic β-lactam antibiotics by the acylation of 6-aminopenicillanic acid and 7aminocephalosporanic acid. Success withthese antibiotics, which were of greatclinical value, stimulated the pharmaceutical industry to search for new β-lactam antibiotics,and a variety of newmethodologies were established andapplied to their *** a result,many β-lactam antibiotics with novelnuclei were discovered from microbialsources, mainly from actinomycetes and

关键词： LACTAM ANTIBIOTICS WITH NOVEL NUCLEI DISCOVERY OF OCH

Effects of Asian dust events on atmospheric bacterial communities at different distances downwind of the source region

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Journal of Environmental Sciences 2018年第10期30卷 133-139页

作者： Jonguk Park Pin-Fang Li Tomoaki Ichijo Masao Nasu Nobuyasu yamaguchi Graduate School of Pharmaceutical Sciences Osaka University1-6 Yamada-okaSuitaOsaka 565-0871Japan National Institutes of Biomedical Innovation Health and Nutrition7-6-8 Asagi Saito Ibaraki Osaka 567-0085 Japan College of Resources and Environmental Sciences China Agricultural University Beijing100193 China Faculty of Pharmacy Osaka Ohtani University3-11-1 Nishikiori-kita Tondabayashi Osaka 584-8540 Japan Osaka Institute of Public Health 1-3-69 Nakamichi Higashinari Osaka 537-0025 Japan

Aeolian dust particles arising from arid and semiarid zones are known to carry microbes by air currents. The effect of wind-borne bacteria on atmospheric bacterial population at various downwind distances from the dust source regions must be clarified, but has not yet been reported. This study monitored the bacterial abundance and community composition in outdoor aerosol samples in Beijing, China, which is close to the Asian dust source regions, and compared them with the results obtained in a distant region（Osaka, Japan）.The Asian dust collected in Beijing contained（4 ± 3） × 10^4 bacterial cells/m^3, approximately 4 times higher than in Osaka. On 15 April 2015, Beijing experienced severe Asian dust events with a 1000-fold increase in bacterial abundance, relative to non-Asian dust days. Dominant bacterial phyla and classes in Asian dust collected in Beijing were Actinobacteria, Bacilli and Acidobacteria, and the bacterial community composition varied more widely than in *** bacterial community compositions differed between the Beijing and Osaka dusts, even for the same Asian dust events. These results indicated that aerosol bacterial communities nearer the dust source are more affected by eolian dust than their distant counterparts.

关键词： Aeolian dust Amplicon sequencing Asian dust Bacterial community Bioaerosols

Recent Progress on Fiber-Based Optical Components

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光学学报 2003年第S1期23卷 233-234页

作者： akira Wada Optics and Electronics Laboratory Fujikura Ltd. 1440 Mutsuzaki Sakura Chiba 285-8550 Japan

The trends of fiber-based optical component technologies are reviewed focusing on fused-taper couplers and fiber Bragg gratings for high bit-rate DWDM transmission systems.

关键词： been in as with of FBG Recent Progress on Fiber-Based Optical Components have on

Nature of complex number and complex-valued neural networks

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Frontiers of Electrical and Electronic Engineering in China 2011年第1期6卷 171-180页

作者： akira HIROSE Department of Electrical Engineering and Information Systems The University of Tokyo7-3-1 HongoBunkyo-kuTokyo 113-8656Japan

We discuss the nature of complex number and its effect on complex-valued neural networks(CVNNs).After we review some examples of CVNN applications,we look back at the mathematical history to elucidate the features of complex number,in particular to confirm the importance of the phaseand-amplitude viewpoint for designing and constructing CVNNs to enhance the *** viewpoint is essential in general to deal with waves such as electromagnetic wave and ***,we point out that,although we represent a complex number as an ordered pair of real numbers for example,we can reduce ineffective degree of freedom in learning or self-organization in CVNNs to achieve better generalization *** merit is significantly useful not only for waverelated signal processing but also for general processing with frequency-domain treatment through Fourier transform.

关键词： electromagnetic wave lightwave coherence adaptive processing in sensing and imaging learning logic neural hardware

Key Technologies for Optical Packet Switching

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光学学报 2003年第S1期23卷 671-672页

作者： akira Okada NTT Photonics Laboratories NTT Corporation 3-1 Morinosato Wakamiya Atsugi-Shi Kanagawa 243-0198 Japan.

The paper describes our recent progress on key technologies and components for realizing optical packet switching, including an out-of-band optical label switching technique, an optical packet synchronizer and a burst... 详细信息

关键词： for it Key Technologies for Optical Packet Switching been that have of mode from line WDM in CDR

Cross-Language Information Extraction and Auto Evaluation for OOV Term Translations

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China Communications 2016年第12期13卷 277-296页

作者： Jian Qu Le Minh Nguyen akira Shimazu School of Information Technology Shinawatra University School of Information Science JAIST

OOV term translation plays an important role in natural language processing. Although many researchers in the past have endeavored to solve the OOV term translation problems, but none existing methods offer definition or context information of OOV terms. Furthermore, non-existing methods focus on cross-language definition retrieval for OOV terms. Never the less, it has always been so difficult to evaluate the correctness of an OOV term translation without domain specific knowledge and correct references. Our English definition ranking method differentiate the types of OOV terms, and applies different methods for translation extraction. Our English definition ranking method also extracts multilingual context information and monolingual definitions of OOV terms. In addition, we propose a novel cross-language definition retrieval system for OOV terms. Never the less, we propose an auto re-evaluation method to evaluate the correctness of OOV translations and definitions. Our methods achieve high performances against existing methods.

关键词： Term translation multilingual information retrieval definition extraction cross-lingual definition extraction auto re-evaluation

Eleven-year Experience with Radial Keratotomy

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眼科学报 1994年第1期10卷 6-12页

作者： akira Momose Institute of Clinical Ophthalmology Japan

1 900 consecutive eyes that underwent radial keratotomy by the senior author were evaluated retrospectively. 3 months after surgery, minimum reduction in mean spherical equivalent of 0. 67D was achieved with 1 incision and maximum 7. 250 with 24 incisions. Unconnected visual acuity of 20/40 or better was obtained in 99. 4% of eyes with low myopia, 64. 2% with moderate myopia and 32. 4% with high myopia. For anisometropia, bilateral RK reduced refractive error from -12. 12D to -5. 22D in more myopic eyes...

关键词： radial keratotomy uncorrected visual acuity myopia anisometropia