Atsushi Sakamoto

Identification and functional analysis of class 3 lipases associated with triacylglycerol metabolism in Nannochloropsis oceanica (Eustigmatophyceae)

Masako Iwai, Koichi Hori, Tomokazu Kurita, Kumiko Okazaki et autres

Microalgae accumulate triacylglycerols (TAGs) as storage lipids in response to nutrient limitation, yet the mechanisms governing TAG turnover remain incompletely understood. In the oleaginous microalga Nannochloropsis oceanica, functional studies of TAG degradation have focused on lipases containing patatin domains, whereas the roles …

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Knockout of an SPX -related gene for polyphosphate synthetase accelerates phosphate starvation responses in the oleaginous microalga Nannochloropsis oceanica

Kumiko Okazaki, Koichi Hori, Masako Iwai, Tomokazu Kurita et autres

SPX domain-containing proteins are important for phosphate (Pi) signaling and homeostasis in various eukaryotes. Genomic and transcriptomic analyses of the oleaginous microalga Nannochloropsis oceanica identified four genes encoding SPX family members with distinct domain architectures: SPX (NoSPX1), SPX-VTC (NoSPX2), SPX-EXS (NoSPX3), and …

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Surface Treatment of AlN Filler for Improvement of Reliability in Silicone Resin Composites

M. Takakusaki, Isao Masada, Yoshiyuki Iizuka, T. Hamasaka et autres

To release heat of integrated circuits and power devices, thermal interface material (TIM) is used as a heat conductor between a heat source and a heat sink. The increasing of the thermal conductivity of the fillers is necessary to increase the thermal …

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Achievements and status of the STRAD project for radioactive liquid waste management

Yoichi Arai, Sou Watanabe, Masaumi Nakahara, Tomomasa Funakoshi et autres

The Japan Atomic Energy Agency (JAEA) has been conducting a project named "Systematic Treatment of RAdioactive liquid waste for Decommissioning (STRAD) project" since 2018 for fundamental and practical studies for treating radioactive liquid wastes with complicated compositions.Fundamental studies have been conducted using …

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Real-time Perceptive Motion Control using Control Barrier Functions with Analytical Smoothing for Six-Wheeled-Telescopic-Legged Robot Tachyon 3

Noriaki Takasugi, Masaya Kinoshita, Yasuhisa Kamikawa, Ryoichi Tsuzaki et autres

To achieve safe legged locomotion, it is crucial to generate motion in real-time considering various constraints in robots and environments. In this study, we propose a lightweight real-time perceptive motion control system for the newly developed six-wheeled-telescopic-legged robot, Tachyon 3. In the …

Atmospheric nitrogen dioxide suppresses the activity of phytochrome interacting factor 4 to suppress hypocotyl elongation

Misa Takahashi, Atsushi Sakamoto, Hiromichi Morikawa

Abstract Main conclusion Ambient concentrations of atmospheric nitrogen dioxide (NO2) inhibit the binding of PIF4 to promoter regions of auxin pathway genes to suppress hypocotyl elongation in Arabidopsis. Abstract Ambient concentrations (10–50 ppb) of atmospheric nitrogen dioxide (NO2) positively regulate plant growth …

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Real-time Perceptive Motion Control using Control Barrier Functions with Analytical Smoothing for Six-Wheeled-Telescopic-Legged Robot Tachyon 3

Noriaki Takasugi, Masaya Kinoshita, Yasuhisa Kamikawa, Ryoichi Tsuzaki et autres

To achieve safe legged locomotion, it is important to generate motion in real-time considering various constraints in robots and environments. In this study, we propose a lightweight real-time perspective motion control system for the newly developed six-wheeled-telescopic-legged robot, Tachyon 3. In the …

Strengths of Concrete Containing Recycled Concrete Aggregate

Takuya Ikeda, S. Yamane, Atsushi Sakamoto

Concrete wastes have been recycled only for macadams, but they have not yet been utilized for aggregates of concrete. Therfore the authors conducted studies on the strengths of concrete containing recycled concrete aggregates in order to utilize these wastes. The concrete with …

Defectivity reduction in EUV resists through novel high-performance Point-Of-Use (POU) filters

Yiren Zhang, Toru Umeda, Hirokazu Sakakibara, Sheik Ansar Usman Ibrahim et autres

Filters for Extreme Ultra-Violet (EUV) lithography chemicals, like chemically amplified photoresist (CAR), are attractive because of their capabilities to remove aggregated species and reduce microbridges in high volume manufacturing. Unlike bulk filters used in high-flow circulation mode, point-of-use (POU) filter is used …

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High Thermal Conductive Composite Resin Filled with Spherical and Polyhedral Aluminum Nitrides

Takefumi Iida, Atsushi Sakamoto, Isao Masada, Saiko Fujii et autres

To release heat of integrated circuits and power devices, thermal interface material (TIM) is used as a heat conductor between a heat source and a heat sink. High thermal conductivity and electrical insulation property are required in TIM, according to the high …

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Orange protein, phytoene synthase regulator, has protein disulfide reductase activity

Yuto Oogo, Miho Takemura, Atsushi Sakamoto, Norihiko Misawa et autres

Orange protein (OR) is known to interact with phytoene synthase (PSY) that commits the first step in carotenoid biosynthesis, and functions as a major post-transcriptional regulator on PSY. We here tried to reveal enzymatic characteristics of OR, that is, protein disulfide reductase …

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Distribution and stoichiometry of Al, Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb in the Seas of Japan and Okhotsk

Yuzuru Nakaguchi, Atsushi Sakamoto, Takuya Asatani, Tomoharu Minami et autres

Trace metals play an important role in marine biogeochemistry. However, the detailed distribution of trace metals in the Seas of Japan and Okhotsk remain unknown. Herein, we report the full-depth and section distributions of the dissolved (d), total dissolvable (td), and labile …

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