Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Junnosuke Okajima"'
Autor:
Terumi Yurimoto, Fumiko Seki, Akihiro Yamada, Junnosuke Okajima, Tomoyuki Yambe, Yoshiaki Takewa, Michiko Kamioka, Takashi Inoue, Yusuke Inoue, Erika Sasaki
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-12 (2024)
Abstract Olfactory dysfunction is associated with aging and the earliest stages of neurodegenerative diseases, such as Alzheimer’s and Parkinson’s diseases; it is thought to be an early biomarker of cognitive decline. In marmosets, a small non-hu
Externí odkaz:
https://doaj.org/article/882d6f8bbc8a402eabc28db1f4f0cd7f
Autor:
Terumi Yurimoto, Fumiko Seki, Akihiro Yamada, Junnosuke Okajima, Tomoyuki Yambe, Yoshiaki Takewa, Michiko Kamioka, Takashi Inoue, Yusuke Inoue, Erika Sasaki
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-2 (2024)
Externí odkaz:
https://doaj.org/article/db0be52453a243eda3df3b6f00ead077
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-10 (2023)
Abstract To understand the generation process of airborne droplets during exhalation, this study investigates the mechanism of bimodal characteristics of the size distribution of droplets generated in a condensed spray flow. The phase change process
Externí odkaz:
https://doaj.org/article/6e9b14081c43499ba7096b76fec134e1
Autor:
Daisuke TSUNEOKA, Junnosuke OKAJIMA
Publikováno v:
Journal of Fluid Science and Technology, Vol 18, Iss 3, Pp JFST0029-JFST0029 (2023)
In this study, the liquid film thickness of slug flow in a microchannel was numerically investigated. Particularly, we focused on a flow regime with high Reynolds and capillary numbers; these dimensionless number were independently modified to invest
Externí odkaz:
https://doaj.org/article/787d1584341a44a99c6bac8c7e2200bc
Publikováno v:
Journal of Fluid Science and Technology, Vol 17, Iss 3, Pp JFST0009-JFST0009 (2022)
We aimed to derive a phase diagram in the parameter space of wall temperature Tw and Weber number We for the spreading behaviors of water drops impacting a heated sapphire plate. Focusing on hydrodynamic instabilities, we performed drop impact experi
Externí odkaz:
https://doaj.org/article/96507b5002db42c49b7bb2deeda681eb
Publikováno v:
Journal of Fluid Science and Technology, Vol 17, Iss 3, Pp JFST0008-JFST0008 (2022)
Cavitation is a phenomenon that degrades the performance of fluid machinery, whereas the thermodynamic self-suppression effect of cavitation is prominent in pumps transporting cryogenic fluids because the effect suppresses cavity development. The the
Externí odkaz:
https://doaj.org/article/85908e7fdfb549ab8bdc62289f38ba72
Publikováno v:
Journal of Fluid Science and Technology, Vol 17, Iss 2, Pp JFST0005-JFST0005 (2022)
The generated cavitation on the NACA16-012 hydrofoil suddenly disappears at a specific angle of attack, even at a low cavitation number, where cavitation normally develops. This was named the cavitation disappearance phenomenon by the authors. It has
Externí odkaz:
https://doaj.org/article/a4280017b0c9445e871322594968769f
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 87, Iss 899, Pp 21-00102-21-00102 (2021)
The thermodynamic suppression effect of cavitation occurs in cryogenic fluid, hot water, and Freon, which suppresses cavity development. In this study, the purposes are to clarify the characteristics of the thermodynamic suppression effect in hot wat
Externí odkaz:
https://doaj.org/article/73bfc8ea12834d6c843b5708719db4c1
Publikováno v:
Journal of Thermal Science and Technology, Vol 15, Iss 1, Pp JTST0006-JTST0006 (2020)
In this study, we experimentally evaluated heat transfer performance using a configuration of layered parallel microchannels, with a focus on the effect of refrigerant mass flow rate on heat transfer performance. HFC-245fa was used as a refrigerant o
Externí odkaz:
https://doaj.org/article/518e32018ec849ce8b8054b664c966eb
Autor:
Junnosuke OKAJIMA, Takahiro OKABE, Naoto MIYAMOTO, Tatsuo MORIMOTO, Kazuhiko TSUNODA, Nozomu HATAKEYAMA
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 15, Iss 1, Pp 19-00507-19-00507 (2020)
To evaluate the frictional heating effect during ski gliding by temperature measurement, a temperature measurement system was developed and evaluated numerically and experimentally. The portable temperature measurement system with high temperature re
Externí odkaz:
https://doaj.org/article/e36f0b6f5f7a4a84a481c12d08ef9e3d