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Eri Itoh, Koji Tominaga, Michael Schultz and Vu N. Duong
Free route airspace allows airspace users to freely plan a route in en-route airspaces within certain restrictions. It is anticipated to offer the benefit of fuel saving and operational flexibility. Regarding its efficient implementation into the ASEAN a...
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Koichiro Hirose, Koji Fukudome, Hiroya Mamori and Makoto Yamamoto
Ice crystal icing occurs in jet engine compressors, which can severely degrade jet engine performance. In this study, we developed an ice crystal trajectory simulation, considering the state changes of ice crystals with a forced convection model, indicat...
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Natsuki Tsushima, Ryo Higuchi and Koji Yamamoto
By deliberately designing microscopic internal mechanisms, architected materials can achieve a variety of material properties without changing constituent materials. Integration of the architected materials into a structure as substructures has a good po...
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Yoshinori Matsuda, Koji Kakutani and Hideyoshi Toyoda
This study developed an unattended electric weeder (UEW) to control floor weeds in an orchard greenhouse. The UEW was a motor-driven dolly equipped with a spark exposer. The spark exposer was constructed by applying an alternating voltage (10 kV) to a co...
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Takahiko Miyazaki, Koji Enoki and Joon Ahn
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Hassan Hadi Mehdi Al Rubaiy, Ammar Altemimi, Ali Khudair Jaber Al Rikabi, Naoufal Lakhssassi and Anubhav Pratap-Singh
The present study proposes microwave-assisted extraction as a sustainable technique for the biosynthesis of bioactive compounds from rice fermented with Aspergillus flavus (koji). First, fermentation conditions (i.e., pH from 3?12, five temperatures from...
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Koji Fukudome, Yuki Tomita, Sho Uranai, Hiroya Mamori and Makoto Yamamoto
Heating devices on airfoil surfaces are widely used as an anti-icing technology. This study investigated the aerodynamic performance with a static heating surface based on the modified extended Messinger model. The predicted ice shape was validated throu...
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Hideki Kumagai, Kazuto Kobayashi, Sachiko Yoshida, Koji Yokoyama, Norio Hirota and Takanori Yamagata
Scanning acoustic microscopy reveals information on histology and acoustic impedance through tissues. The objective of the present study was to investigate whether acoustic impedance values in the liver over time reflect the progression of steatohepatiti...
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Kazuki Nakamura, Koji Hori and Shoichi Hirose
Cryptographic hash functions play an essential role in various aspects of cryptography, such as message authentication codes, pseudorandom number generation, digital signatures, and so on. Thus, the security of their hardware implementations is an import...
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Koji Enoki
In the present study, experiments were performed to examine the characteristics of the two-phase frictional pressure drop of an R410A refrigerant flowing vertically upward and downward for the development of a high-performance heat exchanger using small ...
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