Zobrazeno 1 - 10
of 203
pro vyhledávání: '"Naohide Tomita"'
Autor:
Naoya Hatano, Masaya Higaki, Youhei Otsu, Tatsuya Otsu, Shinji Mikami, Mitsuhiro Matsumoto, Daisuke Kono, Atsushi Matsubara, Naohide Tomita
Publikováno v:
Biosurface and Biotribology (2019)
Destruction resistance such as start-up wear resistance characteristics of vitamin E (dl-α-tocopherol) blended ultra-high molecular weight polyethylene (UHMWPE) were evaluated using the destruction energy index (DEI). The DEI is used to evaluate wea
Externí odkaz:
https://doaj.org/article/ec8b9d62487949f2864a51aa06c1867f
Publikováno v:
Biosurface and Biotribology (2018)
The immune response to ultra-high molecular weight polyethylene wear debris is thought to be one of the major causes of osteolysis and aseptic loosening. An in-vitro method for the measurement of the response is necessary in order to priori estimate
Externí odkaz:
https://doaj.org/article/2dac373a4a60472ab63dce2aaf2cac9d
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 6, Iss 4, Pp 322-329 (2011)
Background. “Rise-to-Peak time” has been proposed as an index of the probe angle during ultrasound measurement. The aim of this study is to quantitatively evaluate the effectiveness of this index as a guide for ultrasound evaluation of articular
Externí odkaz:
https://doaj.org/article/4f0f3907939444f987189f37f8e4837f
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 5, Iss 5, Pp 615-624 (2010)
Background. Ultrasound evaluation of articular cartilage is not accurate if the ultrasound probe is not perpendicular to the cartilage surface. However a probe angle adjustment is difficult because of the manual procedure and the lack of angle index
Externí odkaz:
https://doaj.org/article/2de37a0515f74fcfb93b5379ea0901c8
Publikováno v:
Tribology Online, Vol 5, Iss 2, Pp 96-101 (2010)
The load-dependent frictional performance of vitamin E-blended ultrahigh molecular weight polyethylene (UHMWPE) in serum lubricant was examined. The UHMWPE specimens were slid against the surface of Co-28Cr-6Mo alloy by using a pin-on-disk friction t
Externí odkaz:
https://doaj.org/article/760fcb5763604cc5a90278d072a499c9
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 5, Iss 2, Pp 154-162 (2010)
The possibility of pressure-induced leaching of vitamin E from inside of vitamin E-blended ultrahigh molecular weight polyethylene (UHMWPE) was investigated. UHMWPE specimens were pressed against a base plate, and leached vitamin E was dissolved in e
Externí odkaz:
https://doaj.org/article/50910ef7c09f44449bc728ec99f739ba
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 5, Iss 2, Pp 175-184 (2010)
Background. Ultrasound measurement of osteoarthritis cartilage thickness is not sufficiently accurate if constant sound velocity is used. The aim of this study was to investigate the applicability of estimating the sound velocity using echo reflectan
Externí odkaz:
https://doaj.org/article/27aff2f5ad9c439f944f6cc95405f111
Autor:
Satoshi TERAMURA, Hideyuki SAKODA, Tomohiro TERAO, Kunihiko FUJIWARA, Kosuke KAWAI, Naohide TOMITA
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 4, Iss 4, Pp 589-596 (2009)
Accelerated ageing was conducted on UHMWPE with and without vitamin E (D, L-α tocopherol, VE). Wear performance was investigated using a knee simulator and wear debris was analysed. Aged UHMWPE with VE showed significantly lower wear volume than tha
Externí odkaz:
https://doaj.org/article/2bf01c80826a44a8a5c77a5acbead0d8
Autor:
Yasushi OKUBO, Shin-ichiro MORI, Koji YAMAMOTO, Daisuke HAMADA, Hiroyuki KOHNO, Kunihiko FUJIWARA, Masato HASHIMOTO, Ken IKEUCHI, Naohide TOMITA
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 4, Iss 2, Pp 166-173 (2009)
The mechanical interaction between ultrahigh molecular weight polyethylene (UHMWPE) and a Co-28Cr-6Mo alloy in water was examined in order to clarify the wear resistance mechanism of vitamin E-containing UHMWPE in knee prostheses. The sample UHMWPE w
Externí odkaz:
https://doaj.org/article/4b4f178784d6467e8b7dd48f780ffcad
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 4, Iss 2, Pp 174-181 (2009)
Cartilage tissue was regenerated using fibroin sponge seeded with chondrocyte aggregates. The aggregates were formed on the sponge by micro-folding culture, where chondrocytes were cultured on a substrate containing an array of pits of 100 μm diamet
Externí odkaz:
https://doaj.org/article/d787d919171341a899f5820789097ea6