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522 results on '"Kobayashi, Takuro"'

5. Negative thermal magnetoresistivity as a signature of chiral anomaly in Weyl superconductors

Author

Kobayashi, Takuro, Matsushita, Taiki, Mizushima, Takeshi, Tsuruta, Atsushi, and Fujimoto, Satoshi

Subjects
Condensed Matter - Superconductivity
Abstract

We propose that chiral anomaly of Weyl superconductors gives rise to negative thermal magnetoresistivity induced by emergent magnetic fields, which are generated by vortex textures of order parameters or lattice strain. We establish this scenario by combining the argument based on Berry curvatures, and the quasi-classical theory of the Eilenberger equation with quantum corrections arising from inhomogeneous structures. It is found that the chiral anomaly contribution of the thermal conductivity exhibits characteristic temperature dependence, which can be a smoking-gun signature of this effect., Comment: 10 pages, 3 figures, the version accepted for publication in Physical Review Letters

Published
2018
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10. A successful start-up of an anaerobic membrane bioreactor (AnMBR) coupled mainstream partial nitritation-anammox (PN/A) system: A pilot-scale study on in-situ NOB elimination, AnAOB growth kinetics, and mainstream treatment performance

Author

Wu, Jiang, Kong, Zhe, Luo, Zibin, Qin, Yu, Rong, Chao, Wang, Tianjie, Hanaoka, Taira, Sakemi, Shinichi, Ito, Masami, Kobayashi, Shigeki, Kobayashi, Masumi, Xu, Kai-Qin, Kobayashi, Takuro, Kubota, Kengo, and Li, Yu-You

Published
2021
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40. Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment, Sewage Sludge Digestion and Biogas Upgrading: A Review.

Author

Li, Yemei, Ren, Yuanyuan, Ji, Jiayuan, Li, Yu-You, and Kobayashi, Takuro

Abstract

Anaerobic membrane bioreactors (AnMBRs) are formed through the combination of anaerobic digestion and membrane technology. The upgraded technology separates SRT from HRT in the anaerobic digester, shortening the treatment period, reducing the digester's volume and improving effluent quality. Furthermore, AnMBRs have a strong tolerance for the existing forms of objects and can handle liquids, high-solid materials and gases. Up to now, AnMBRs have been utilized in the treatment of various types of industrial and municipal wastewater, organic solid waste and also biogas upgrading, and they have achieved excellent performance. However, there are few studies which have discussed their multiple utilization, especially following the flow of wastewater treatment. This study summarizes the application of AnMBRs in their diverse roles in the municipal wastewater treatment process. The discussion revolves around energy generation and the fouling issue of AnMBRs in the treatment of municipal wastewater, the digestion of sewage sludge generated in conventional municipal wastewater treatment and the upgrading of biogas after anaerobic digestion. In addition to controlling operating parameters, strategies used to improve the treatment effectiveness are also introduced. Lastly, online methods for preventing membrane fouling, which is the main operational obstacle to AnMBRs' wider spread, are also discussed. This review aims to provide a fresh perspective on how AnMBRs are utilized in waste treatment. [ABSTRACT FROM AUTHOR]

Published
2023
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47. A Review on Start-Up Phase Optimization of Kitchen Waste Anaerobic Digestion.

Author

Yan, Yi-Juan, Li, Xiang, Lu, Chen-Shun, Kobayashi, Takuro, Zhen, Guang-Yin, and Hu, Yong

Subjects
NEW business enterprises, BIOGAS production, ANAEROBIC reactors, EVIDENCE gaps, TEMPERATURE control, BIOGAS
Abstract

Kitchen waste has been confirmed as an appropriate substrate for anaerobic digestion, although means of alleviating the difficulties and time-consuming nature of the start-up phase need to be further explored. Based on the mechanism of anaerobic digestion, we discuss the factors influencing the anaerobic start-up phase of kitchen waste. By controlling the temperature, pH, organic loading rate, inoculation ratio and other parameters, the high activity of methane-producing archaea and other bacteria can be intensified, thereby increasing the biogas yield. Furthermore, we introduce the methods of substrate pretreatment, operating condition optimization and conductive material addition. Finally, we put forward future perspectives and research gaps related to accelerating the start-up phase of anaerobic bioreactors utilized for kitchen waste biodegradation. [ABSTRACT FROM AUTHOR]

Published
2023
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