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Wind Power Forecasting using an Artificial Neural Network for ASPCS

Energy and Power Engineering 2013年第4期5卷 414-417页

作者： Kazuma Hanada Takataro Hamajima Makoto Tsuda Daisuke Miyagi takakazu shintomi Tomoaki Takao Yasuhiro Makida Masataka Kajiwara Advanced Research Institute for the Sciences and Humanities Nihon University Tokyo Japan Department of Electrical and Electronics Systems Hachinohe Institute of Technology Aomori Japan Department of Electrical Engineering Tohoku University Miyagi Japan Department of Engineering and Applied Sciences Sophia University Tokyo Japan High Energy Accelerator Research Organization Ibaraki Japan Iwatani Corporation Tokyo Japan

In order to use effectively renewable energy sources, we propose a new system, called Advanced Superconducting Power Conditioning System (ASPCS) that is composed of Superconducting Magnetic Energy Storage (SMES), Fuel Cell-Electrolyzer (FC-EL), hydrogen storage and DC/DC and DC/AC converters in connection with a liquid hydrogen station for fuel cell vehicles. The ASPCS compensates the fluctuating electric power of renewable energy sources such as wind and photovoltaic power generations by means of the SMES having characteristics of quick response and large Input-Output power, and hydrogen energy with FC-EL having characteristics of moderate response and large storage capacity. The moderate fluctuated power of the renewable energy is compensated by a trend forecasting method with the Artificial Neural Network. In case of excess of the power generation by the renewable energy to demand it is converted to hydrogen with EL. In contrast, shortage of the electric power is made up with FC. The faster fluctuation power that cannot be compensated by the forecasting method is effectively compensated by SMES. In the ASPCS, the SMES coil with an MgB2 conductor is operated at 20 K by using liquid hydrogen supplied from a liquid hydrogen tank of the fuel cell vehicle station. The necessary storage capacity of SMES is estimated as 50 MJ to 100 MJ depending on the forecasting time for compensating fluctuation power of the rated wind power generation of 5.0 MW. As a safety case, a thermosiphon cooling system is used to cool indirectly the MgB2 SMES coil by thermal conduction. In this paper, a trend forecasting result of output power of a wind power generation and the estimated storage capacity of SMES are reported.

关键词： Renewable Energy Artificial Neural Network Forecasting SMES Liquid Hydrogen Fuel Cell and Electrolyzer

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SYNTHESIS AND CHARACTERIZATION OF SOLUBLE POLYPHENYLENE COMPOSED OF p-PHENYLENE AND m-PHENYLENE UNITS

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Chinese Journal of Polymer Science 2002年第4期20卷 333-337页

作者： takakazu Yamamoto Chemical Resources Laboratory Tokyo Institute of Technology Tokyo Japan

NiCl2(bpy) catalyzed polycondensation between p-dibromobenzene and m-dibromobenzene has been carried out under various conditions. The polycondensation endows the copolymer with an M-n of 2300 (by GPC, polystyrene standards) and good solubility in organic solvents. The fluorescence spectra of the copolymer measured with tetrahydrofuran solution shows an emission maximum (lambda(max)) at 372.8 nm, whereas for the film the maximum shifts to 436.6 nm.

关键词： polyphenylene copolycondensation conjugated polymer

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Tuning Ice Nucleation by Mussel-Adhesive Inspired Polyelectrolytes:The Role of Hydrogen Bonding

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CCS Chemistry 2022年第9期4卷 2980-2990页

作者： Jing Chen Yongkang Wang Benjamin Leibauer takakazu Seki Konrad Meister Yuki Nagata Mischa Bonn Department of Chemistry School of ScienceTianjin University of Science&TechnologyTianjin 300457 Max Planck Institute for Polymer Research Mainz 55128 School of Mechanical Engineering Southeast UniversityNanjing 211189 School of Arts&Sciences University of Alaska SoutheastJuneauAlaska 99801

Heterogeneous ice nucleation(HIN)on foreign surfaces plays a crucial role across a wide range of environmental and biological processes,and control of HIN is highly *** surfaces to control HIN poses interesting scientific challenges and holds great potential for technological ***,we combine the ice nucleation tuning capability of polyelectrolytes withmussel-inspired adhesives to obtain robust surface functionalization with HIN control.

关键词： ice nucleation polyelectrolyte catechol sum-frequency generation hydrogen bonding

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A comparative study on p-doping behavior of polythiophenes with CH_3SO_3H

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Science China Chemistry 2007年第1期50卷 18-22页

作者： IMIT Mokhtar YAMAMOTO takakazu IMIN Patigul School of Chemistry and Chemical Engineering Xinjiang University Chemical Resources Laboratory Tokyo Institute of Technology4259 NagatsutaMidori-kuYokohama 226-8503Japan

Four kinds of polythiophenes have been doped with CH3SO3H in CHCl3 under air,oxygen,and nitrogen. In the doping of two types of poly(3-hexylthiophene)s,P3HexTh(Zn/Ni)and P3HexTh(Fe)with different contents of a head-to-tail unit,the p-doping occurs at a similar *** reaction between poly(3-dodecylthiophene),P3DodTh,and the acid takes place more rapidly.P3OBuTh with a butoxy substituent undergoes more facile p-doping and receives photochemical reaction with CHCl3,and this reaction obeys a pseudo-first-order rate law with a rate constant kobs of 1.42×10-5s-1at room tempera- ture.

关键词： polythiophenes p-doping methanesulfonic acid

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Influence of surfactant concentration on counter-ion induced solubility of poly(pyridine-2,5-diyl)

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2005年第5期6卷 365-368页

Protonating the pyridine rings of poly(pyridine-2,5-diyl) with dodecybenzenesulfonic acid and camphorsulphonic acid produces polymer materials which can be dissolved in chloroform (in contrast to the unprotonated polymer, which can only be dissolved in strong acids such as formic acid) and allows mixing the protonated polymers with other chloroform soluble conju- gated polymers for use in electronic devices. The protonating behavior of poly(pyridine-2,5-diyl) with two kinds of surfactants is different in some levels. Dodecybenzenesulfonic acid has higher protonating ability than camphorsulphonic acid.

关键词：表面活性剂浓度溶解性聚嘧啶电特性聚杂环化合物

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Decreased postprandial gallbladder emptying in patients with black pigment stones

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World Journal of Gastroenterology 2008年第18期14卷 2825-2831页

作者： takakazu Sugo Kenichi Hakamada Shunji Narumi Mutsuo Sasaki Department of Gastroenterological Surgery Hirosaki University Graduate School of Medicine 5 Zaifu-cho Hirosaki 036-8562 Japan

AIM: To analyze gallbladder contractility in patients with black pigment stones (BPSs) and to compare this with patients with cholesterol stones (CSs) and healthy volunteers. METHODS: The pattern of bile evacuation from the gallbladder was quantified by computer cholescintigraphy in 28 normal subjects, 22 patients with CSs and 14 with BPSs. The parameters of gallbladder contractility included ejection period (EP), ejection fraction (EF) and ejection rate (ER). RESULTS: A significantly shorter EP was observed in patients with BPSs in comparison to those with CSs (t = 2.4, P < 0.05). EF in BPS patients significantly decreased in comparison to that in CS and normal subjects (t = 6.4, P < 0.0001; t = 2.1, P < 0.05). EF in CS patients also significantly decreased in comparison to that in normal subjects (t = -3.0, P < 0.005). Consequently, ER in patients with BPSs and CSs was significantly smaller than that in normal subjects (t = 3.1, P < 0.005; t = -3.5, P < 0.001). Moreover, in cases where postprandial reflux of a radioisotope into the common hepatic duct from the gallbladder was observed, EF and ER of either CS or BPS patients showed a significant reduction. CONCLUSION: Bile evacuation from the gallbladder is reduced in patients with BPSs, in comparison to those with CSs and to healthy volunteers. Bile stagnation due to impaired gallbladder kinetics seems to be one of the predisposing factors for the development of BPSs.

关键词：黑色素胆囊排空胆管造影排空速度

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Photochemical reactions of poly(3-butoxythiophene-2,5-diyl) with chloroform

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2005年第8期6卷 722-724页

作者：木合塔尔.依米提 YAMAMOTO takakazu 帕提古丽.依明 School of Chemistry and Chemical Engineering Xinjiang UniversityUrumqi 830046 China Chemical Resources Laboratory Tokyo Institute of Technology Yokohama 226-8503 Japan Chemical Resources Laboratory Tokyo Institute of TechnologyYokohama 226-8503 Japan School of Chemistry and Chemical Engineering Xinjiang UniversityUrumqi 830046 China

Photochemical reactions of poly(3-butoxythiophene-2,5-diyl) with chloroform under irradiation with light were studied. The reactions were separately carried out under air, oxygen, and nitrogen. The obtained results showed that this reaction belongs to the pseudo-first-order reaction with a rate constant kobs of 1.4×10?5 s?1 at room temperature. The presence or absence of air, oxygen, and nitrogen did not have obvious effects on the reaction rate under irradiation with light.

关键词：光化学反应聚乙烯动力学氯仿空间温度

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Improvement of a Joystick Controller for Electric Wheelchair User

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Modern Mechanical Engineering 2015年第4期5卷 132-138页

作者： Masatomo Shibata Chao Zhang takakazu Ishimatsu Motohiro Tanaka Joel Palomino Nagasaki University Graduate School of Engineering Nagasaki University Nagasaki Japan Department of Transportation Mechanics Kurume Institute of Technology Kurume Japan Pontificia Universidad Catolica del Peru Lima Peru

The electric wheelchair is an effective machine for people with lower limb disability. The user controls the wheelchair by a joystick that helps the user to navigate the wheelchair along the desired path. Suppose the user on the wheelchair wants to operate the computer for his jobs or enjoyment, it is preferable for the user to be able to operate the computer without transferring from the wheelchair to a computer desk. Of course, some computer input devices are available for wheelchairs. One reasonable idea is to use the familiar joystick on the wheelchair as a computer input device. In this paper a joystick controller is proposed, which enables the user on the wheelchair to operate the computer settled on a nearby table. The proposed joystick controller can be achieved by mounting the sensor unit on the joystick without any modification of the conventional wheelchair controller. The principle of the sensing unit is to measure the inclination angle and the direction of the joystick with an acceleration and gyro sensor. Then the sensing unit sends the control data to the computer via an infrared or wireless signal. This proposal is based on a request done by the wheelchair users.

关键词： Wheelchair Joystick Communication Computer Interface

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Pillow-Type Computer Input Device for Serious Spinal Cord Injury

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Modern Mechanical Engineering 2015年第3期5卷 61-68页

作者： Jiangli Yu takakazu Ishimatsu Chao Zhang Lawn Murray Motohiro Tanaka Nagasaki University Graduate School of Engineering Nagasaki University Nagasaki City Japan Nagasaki University Graduate School of Biomedical Sciences Nagasaki University Nagasaki City Japan Department of Transportation Mechanics Kurume Institute of Technology Kurume City Japan

A pillow type computer input device is proposed. The interface is designed to move computer cursor as the user expect by using his or her head movement. A supporting and care devices around the bed often becomes barriers for the care and assist task for the patient. The proposed pillow type interface is designed not to disturb the care and assist tasks. The head movement of the user is estimated by the four pressure sensors under the pillow. In order to improve the user-friendliness of the interface, the pillow is mounted on the sliding mechanism. Due to these pressure sensors, rotating head movement around the neck and nodding movement of the head can be measured quantitatively. Considering the head movement, the computer cursor is moved by using the original algorithm.

关键词： Interface Head Movement Injury Pressure Sensor

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An Environmental Control System for ALS Patient Using Finger Movement

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Modern Mechanical Engineering 2015年第4期5卷 122-131页

作者： Chao Zhang Masatomo Shibata Keisuke Takashima Jiangli Yu takakazu Ishimatsu Joel Palomino Nagasaki University Graduate School of Engineering Nagasaki University Nagasaki Japan Pontificia Universidad Catolica del Peru

ALS is a degenerative disease which affects the patients muscular activity in feet and hands, leading to a bed ridden status. The loss of independency affects their will to live, for this reason an environmental control system to handle the home appliances and make telephone calls is proposed. The system uses a tablet as a visual human interface so that the patient can select the desired appliance by selecting the corresponding item on the tablet screen. Based on the remaining patient’s abilities an input device that detects slight finger movement is proposed. In this paper three types of input devices are considered and their performance is evaluated by four ALS patients. Their comments about the usage of the devices are discussed in this work. Finally the environmental control was implemented on an ALS patient home and their impressions were satisfactory for the patients, relatives and care-givers.

关键词： Environmental Control ALS patient Input Device Touch Sensor Pressure Sensor

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