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Analyzing Human＇s Continuous Learning Processes with the Reflection Sub Task

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通讯和计算机（中英文版） 2015年第1期12卷 20-27页

作者： tomohiro yamaguchi Kouki Takemori Yuki Tamai Keiki Takadama National Institute of Technology Nara College Nara 639-1080 Japan The University of Electro-Communications Tokyo 182-8585 Japan

Development of the Operating Circuit for a LED Lamp Based on the Cockcroft-Walton Circuit

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Journal of Energy and Power Engineering 2012年第12期6卷 1957-1964页

作者： tomohiro yamaguchi Yuta Nakamura Cixin Wei Yoshio Watanabe Faculty of Engineering Kanagawa University Yokohama 221-8686 Japan

The operating circuits for LED （light emitting diode） lamp composed of diodes and DC capacitors only are proposed. The proposed circuit is based on a double-voltage rectifier circuit and a Cockcroft-Walton circuit. The circuit can operate LED without flicker, and is free from switching noise since high frequency switching circuit is not used. To replace an AC capacitor by a DC capacitor for the ballast, a diode is connected across the capacitor in parallel, and the operating voltage of LED unit is kept at the value greater than the peak voltage of the input power source. The circuit realizes high efficiency and high input power factor compared with the operating circuits on the market. Cockcroft-Walton-type circuit can operate many LED devices in series connection. Series connection is preferable for fabricating LED unit of a constant voltage characteristic. Moreover, fairly flat waveform of LED operating current is realized by Cockcrofl-Walton-type circuit, even though capacitor ballast is used.

关键词： LED lamp light emitting diode Cockcroft-Walton circuit double-voltage rectifier circuit DC capacitor DC convertor.

Hayabusa2’s superior solar conjunction mission operations: Planning and post-operation results

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Astrodynamics 2020年第4期4卷 265-288页

作者： Stefania Soldini Hiroshi Takeuchi Sho Taniguchi Shota Kikuchi Yuto Takei Go Ono Masaya Nakano Takafumi Ohnishi Takanao Saiki Yuichi Tsuda Fuyuto Terui Naoko OgawaYuya MimasuTadateru Takahashi Atsushi Fujii Satoru NakazawaKent Yoshikawa Yusuke Oki Chikako Hirose Hirotaka Sawada tomohiro yamaguchi Makoto Yoshikawa Department of Mechanical Materials and Aerospace EngineeringUniversity of LiverpoolLiverpool L693BXUK Institute of Space and Astronautical Science Japan Aerospace Exploration AgencySagamihara 252-5210Japan Fujitsu Limited Tokyo 105-7123Japan Mitsubishi Electric Corporation Tokyo 100-8310Japan

In late 2018,the asteroid Ryugu was in the Sun's shadow during the superior solar conjunction *** the Sun-Earth-Ryugu angle decreased to below 3°,the Hayabusa2 spacecraft experienced 21 days of planned blackout in the Earth-probe communication *** was the first time a spacecraft had experienced solar conjunction while hovering around a minor *** the safety of the spacecraft,a low energy transfer trajectory named Ayu was designed in the Hill reference frame to increase its altitude from 20 to 110 *** trajectory was planned with the newly developed optNEAR tool and validated with real time *** article shows the results of the conjunction operation,from planning to fight data.

关键词： superior solar conjunction Hayabusa2 Ryugu hovering satellite mission operations

Electric Field Enhancement of Nano Gap of Silver Prisms

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Chinese Physics Letters 2007年第10期24卷 2934-2937页

作者： KENZO yamaguchi tomohiro Inoue MASAMITSU Fujii MASANOBU Haraguchi TOSHIHIRO Okamoto MASUO Fukui SHU Seki SEIICHI Tagawa Department of Optical Science and Engineering Faculty and School of Engineering The University of Tokushima 2-1 Minamijosanjima-cho Tokushima-city Tokushima 770-8506 Japan Department of Electronics and Mechanics Toba National College of Maritime Technology 1-1 Ikegami-cho Toba-city Mie 517-8501 Japan Institute of Scientific and Industrial Research Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan

Using numerical calculation, we examine the effects of gap distance of a pair of nano gap silver prisms with rounded corners on the local light intensity enhancement. Two peaks due to localized surface plasmon （LSP） excitation are observed in a wavelength range from 900nm to 300nm. The results demonstrate that peaks at a longer and a shorter wavelength corresponded to dipole-like and quadrupole-like LSP resonances, respectively. It is found that a gap distance up to 20 nm provides larger light intensity enhancement than that of a single silver nano prism with rounded corners. Furthermore, nano gap silver prisms are fabricated by direct focused ion beam processing, and we measure the scattering light spectrum of a pair of nano prisms by a confocal optical system. However, the two LSP peaks are not observed in visible range because the sizes of the nano gap and prisms are too large.

关键词： SURFACE-PLASMON RESONANCE AG NANOPARTICLES NEAR-FIELD NANOANTENNAS SCATTERING

Characterization of Corrinoid Compounds in the Edible Cyanobacterium <i>Nostoc flagelliforme</i>the Hair Vegetable

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Food and Nutrition Sciences 2014年第4期5卷 334-340页

作者： Fei Teng tomohiro Bito Shigeo Takenaka Hiroyuki Takenaka Yuji yamaguchi Yukinori Yabuta Fumio Watanabe Department of Veterinary Science Graduate School of Life and Environmental Sciences Osaka Prefecture University Osaka Japan Division of Applied Bioresources Chemistry The United Graduate School of Agricultural Sciences Tottori University Tottori Japan MAC Gifu Research Institute MicroAlgae Corporation Gifu Japan.

Vitamin B12 contents in the edible cyanobacterium Nostoc flagelliforme, also known as hair vegetable, were assayed using a microbiological method. We detected high vitamin B12 contents in samples of naturally grown cells (109.2 ± 18.5 μg/100g dry weight) and cultured cells (120.2 ± 53.6 μg/100g dry weight). However, commercially available hair vegetable samples, which comprised fake substitutes and Nostoc, had variable contents (4.8 - 101.6 μg/100g dry weight) because concomitant fake items contain very low vitamin B12 contents. To evaluate whether natural and cultured N. flagelliforme samples contained vitamin B12 or pseudovitamin B12, corrinoid compounds were purified and identified as pseudovitamin B12 (approximately 72%) and vitamin B12 (approximately 28%) using silica gel 60 TLC bioautography and LC/MS. The results suggested that N. flagelliforme contains substantial amounts of pseudovitamin B12, which is inactive in humans.

关键词： Edible Cyanobacteria Hair Vegetable Nostoc flagelliforme Pseudovitamin B12 Vitamin B12

Serum Mac-2 binding protein is a novel biomarker for chronic pancreatitis

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World Journal of Gastroenterology 2016年第17期22卷 4403-4410页

作者： tomohiro Maekawa Yoshihiro Kamada Yusuke Ebisutani Makiko Ueda Tomoki Hata Koichi Kawamoto Shinji Takamatsu Kayo Mizutani Mayuka Shimomura Tomoaki Sobajima Hironobu Fujii Kotarosumitomo Nakayama Kimihiro Nishino Makoto Yamada Takashi Kumada Toshifumi Ito Hidetoshi Eguchi Hiroaki Nagano Eiji Miyoshi Department of Molecular Biochemistry and Clinical Investigation Osaka University Graduate School of Medicine Suita Osaka 565-0871 Japan Department of Surgery Osaka University Graduate School of Medicine Suita Suita Osaka 565-0871 Japan aMs New Otani Clinic Osaka Osaka 540-8570 Japan Department of Gastroenterology Ogaki Municipal Hospital Ogaki Gifu 503-8502 Japan Department of Gastroenterology and Hepatology Japan Community Health Care Organization Osaka Hospital Osaka Osaka 540-8570 Japan Department of Surgery Yamaguchi University Graduate School of Medicine Ube Yamaguchi 755-8505 Japan

AIM: To determine the efficacy of Mac-2 binding protein (Mac-2bp) for diagnosis of chronic ***: Fifty-nine healthy volunteers (HV), 162 patients with chronic pancreatitis (CP), and 94 patients with pancreatic ductal adenocarcinoma (PDAC) were enrolled in this study. We measured serum Mac-2bp using our developed enzyme-linked immunosorbent assay kit. Additional biochemical variables were measured using an automated analyzer (including aminotransferase, alanine aminotransferase, γ-glutamyltransferase, alkaline phosphatase, triglyceride, C-reactive protein, and amylase levels) or chemiluminescent enzyme immunoassay (carbohydrate antigen 19-9 and carcinoembryonic antigen). The ability of Mac-2bp to predict CP diagnosis accurately was assessed using receiver operating characteristic (ROC) ***: Serum Mac-2bp levels were significantly increased in CP patients compared to HV (P < 0.0001) and PDAC patients (P < 0.0001). Area under the ROC curve values of Mac-2bp for the discrimination of CP from HV and PDAC were 0.727 and 0.784, respectively. Multivariate analyses demonstrated that serum Mac-2bp levels were independent determinants for CP diagnosis from HV and PDAC patients. Immunohistological staining showed that Mac-2bp was expressed faintly in the pancreas tissues of both CP and PDAC patients. Serum aspartate aminotransferase, alanine aminotransferase, γ-glutamyltransferase, alkaline phosphatase, and triglyceride levels were significantly higher in patients with CP or PDAC. Serum Mac-2bp levels were highly correlated with protein levels of alanine aminotransferase, γ-glutamyltransferase, and C-reactive protein, but not amylase, suggesting that the damaged liver produces ***: Measurement of serum Mac-2bp may be a novel and useful biomarker for CP diagnosis as well as liver fibrosis in the general population.

关键词： Pancreatic ductal adenocarcinoma Chronic pancreatitis Biomarker Steatopancreatitis Mac-2 binding protein (LGALS3BP)