Zobrazeno 1 - 10
of 264
pro vyhledávání: '"Hiroaki HASEGAWA"'
Autor:
Kazuya Seo, Hiroyuki Okuizumi, Yasufumi Konishi, Takuto Kobayashi, Hiroaki Hasegawa, Shigeru Obayashi
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-11 (2023)
Abstract The rules governing the dimensions of the Javelin were substantially changed in 1986. It was considered that this new design guaranteed there was zero pitching moment at 0° angle of attack and that the pitching moment decreased (became nega
Externí odkaz:
https://doaj.org/article/aaa47e2c362b4a62bebdf9b766a61037
Autor:
Yuki SHIGENAGA, Hiroaki HASEGAWA
Publikováno v:
Journal of Fluid Science and Technology, Vol 18, Iss 1, Pp JFST0019-JFST0019 (2023)
A typical plant that is distributed by wind is the dandelion, which possesses a complex hairy pappus that aids in flying. A pappus or group of bristly filaments found in plumed seeds is believed to have a role in drag enhancement. The pappus prolongs
Externí odkaz:
https://doaj.org/article/335c9a595fe94554be16ac638b979fbf
Publikováno v:
BMC Oral Health, Vol 21, Iss 1, Pp 1-5 (2021)
Abstract Background A better understanding of the risk factors for postoperative nausea and vomiting (PONV) could improve patient outcomes. This study aimed to analyze the risk factors for PONV and its onset after third molar impaction surgery, and t
Externí odkaz:
https://doaj.org/article/cebf177f58464ad1b73136d6f9a03e20
Publikováno v:
Diagnostics, Vol 13, Iss 7, p 1240 (2023)
Quarter-detector computed tomography (QDCT) is an ultra-high-spatial-resolution imaging technique. This study aimed to verify the validity of trabecular structure evaluation using a QDCT scanner in the diagnosis of osteoporosis. We used a cancellous
Externí odkaz:
https://doaj.org/article/00d373f09fc646bb94ffddb15dfcff48
Publikováno v:
Proceedings, Vol 49, Iss 1, p 104 (2020)
The purpose of this study is to investigate the difference in aerodynamic properties between the feather shuttlecock and the synthetic shuttlecock. In particular, we focus on the aerodynamic stability of the two types of shuttlecock during impulsive
Externí odkaz:
https://doaj.org/article/0fe3d67833994dd3a218f7ea881b2265
Autor:
Takuto Kobayashi, Kazuya Seo, Shoya Kaneda, Kasumi Sasaki, Kento Shinji, Shogo Oyama, Hiroyuki Okuizumi, Yasufumi Konishi, Hiroaki Hasegawa, Shigeru Obayashi
Publikováno v:
Proceedings, Vol 49, Iss 1, p 144 (2020)
Using the world’s largest magnetic suspension and balance system (MSBS) and a low-turbulence wind tunnel, we successfully measured the aerodynamic forces acting on a non-spinning women’s javelin. It was found that the drag and the lift increased
Externí odkaz:
https://doaj.org/article/10a4bf19ef9a438ab39625d157568188
Publikováno v:
Proceedings, Vol 49, Iss 1, p 109 (2020)
The purpose of this study was to investigate the effect of the air permeability of ski jumping suit fabric on aerodynamic characteristics. In the study, four types of fabric with different air permeabilities were installed onto a fabric-clothed ellip
Externí odkaz:
https://doaj.org/article/47245455c84442cf85519db89b296e53
Publikováno v:
Tribology Online, Vol 10, Iss 5, Pp 390-396 (2015)
Paper-based friction materials used for wet clutches in automatic transmissions require various tribological functions such as a high and stable friction coefficient, good μ-V (friction coefficient-sliding velocity) characteristics, heat resistance,
Externí odkaz:
https://doaj.org/article/2a63889b7a10452394f36fa07b598da7
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 83, Iss 856, Pp 17-00165-17-00165 (2017)
Badminton is one of the most popular sports in the world and is famous as the sport having the fastest initial velocity of a batted ball among all ball games. Initial velocity immediately after smashing may reach up to 408 km/h (113 m/s) at maximum.
Externí odkaz:
https://doaj.org/article/2617d02c075c4f4ab77bb5abf30e09db
Autor:
Hiroaki Hasegawa, Masanori Sato
Publikováno v:
Diagnostics, Vol 9, Iss 1, p 27 (2019)
In regenerative medicine, evaluation of bone mineral density using a microfocus X-ray generator could eventually be used to determine the degree of bone tissue regeneration. To evaluate bone mineral density against regenerated bone material, two low-
Externí odkaz:
https://doaj.org/article/4c64b47632da47a0a7fa7af94902e4b8