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522 results on '"Kobayashi, Takuro"'

104. Recovery of biohydrogen in a single-chamber microbial electrohydrogenesis cell using liquid fraction of pressed municipal solid waste (LPW) as substrate

Author

Zhen, Guangyin, primary, Kobayashi, Takuro, additional, Lu, Xueqin, additional, Kumar, Gopalakrishnan, additional, Hu, Yong, additional, Bakonyi, Péter, additional, Rózsenberszki, Tamás, additional, Koók, László, additional, Nemestóthy, Nándor, additional, Bélafi-Bakó, Katalin, additional, and Xu, Kaiqin, additional

Published
2016
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105. Development of Autonomous Star Tracker NSTT (Next-Generation Star Tracker)

Author

Matsumoto, Shuichi, Kawai, Hiroshi, Iwata, Takanori, Sekiguchi, Takeshi, Kanzawa, Takuya, Higashino, Isamu, Noguchi, Kazuhide, Satoh, Koshi, Maeda, Mirei, Kondoh, Kazushi, Torikai, Yasunobu, Kamizono, Takashi, and Kobayashi, Takuro

Subjects
Autonomous, AOCS, Star Tracker, Star Sensor, Attitude determination, STT
Abstract

第58回宇宙科学技術連合講演会（2014年11月12日-14日. 長崎ブリックホール), 長崎市, 長崎県, "To realize advanced scientific satellites and earth observation satellites requiring more accurate pointing knowledge and higher angular-rate maneuver, we developed a precision autonomous star tracker for agile spacecraft, which is named as Autonomous Star Tracker NSTT (Next-Generation Star Tracker). NSTT realizes autonomous attitude determination without a priori information, keeps tracking stars under a satellite motion of up to 3 degrees/s, and provides high-accuracy attitude determination results. The formal qualification test of NSTT was completed in April 2014. Two flight models of NSTT have been manufactured and will be launched atop of the next X-ray observation satellite, ASTRO-H.This paper describes the technical challenges of NSTT and our solutions to them, summarizes the design and manufacture results of NSTT, and presents qualification test results of NSTT.", 資料番号: AC1500020000, レポート番号: JSASS-2014-4455

Published
2014

116. Combined pretreatment of electrolysis and ultra-sonication towards enhancing solubilization and methane production from mixed microalgae biomass.

Author

Sivagurunathan, Periyasamy, Kobayashi, Takuro, Kumar, Gopalakrishnan, Xu, Kaiqin, Kim, Sang-Hyoun, and Zhen, Guangyin

Subjects
*BIOMASS energy, *PROTEINS, *CARBOHYDRATES, *ELECTROLYSIS, *HYDROLYSIS
Abstract

This study investigated the effect of combination of pretreatment methods such as ultra-sonication and electrolysis for the minimum energy input to recover the maximal carbohydrate and solubilization (in terms of sCOD) from mixed microalgae biomass. The composition of the soluble chemical oxygen demand (COD), protein, carbohydrate revealed that the hydrolysis method had showed positive impact on the increasing quantity and thus enhanced methane yields. As a result, the combination of these 2 pretreatments showed the greatest yield of soluble protein and carbohydrate as 279 and 309 mg/L, which is the recovery of nearly 85 and 90% in terms of total content of them. BMP tests showed peak methane production yield of 257 mL/g VS added , for the hydrolysate of combined pretreatment as compared to the control experiment of 138 mL/g VS added. [ABSTRACT FROM AUTHOR]

Published
2017
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144. Simultaneous removal of 5-hydroxy methyl furfural (5-HMF) and hydrogen production from acid (H2SO4) pretreated red-algal hydrolysate via hybrid immobilized cells.

Author

Kumar, Gopalakrishnan, Sivagurunathan, Periyasamy, Kobayashi, Takuro, Xu, Kai Qin, and Kim, Sang-Hyoun

Abstract

This study dealt with a new approach for the removal of 5-hydroxy methyl furfural (5-HMF) from dilute acid pretreated red algal hydrolysate using hybrid immobilized cells along with the generation of H 2 as energy carrier. Under batch conditions, the peak 5-HMF removal of 1.6 g/L (100% removal) and hydrogen production rate of 1.48 L/L-d were obtained at 50% ( v / v ) algal hydrolysate content which is equivalent to 16.6 g sugar/L. Beyond the content, only the 5-HMF removal has been taken place, but the hydrogen production has been inhibited significantly. Further, an anaerobic sequencing batch operation performed using the optimal 50% AH concentration showed a stable hydrogen production rate and yield of 4.8 L/L-d and 2.40 mol/mol hexose utilized respectively. [ABSTRACT FROM AUTHOR]

Published
2015
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