Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Humberto Naoyuki Yoshimura"'
Autor:
Carla Castiglia Gonzaga, Paulo Francisco Cesar, Cristina Yuri Okada, Catia Fredericci, Flávio Beneduce Neto, Humberto Naoyuki Yoshimura
Publikováno v:
Materials Research, Vol 11, Iss 3, Pp 301-306 (2008)
The objective of this work was to evaluate biaxial-flexural-strength (σf), Vickers hardness (HV), fracture toughness (K Ic), Young's modulus (E), Poisson's ratio (ν) and porosity (P) of two commercial glass-ceramics, Empress (E1) and Empress 2 (E2)
Externí odkaz:
https://doaj.org/article/1922a35acc6e4d019b753970657daf46
Autor:
Humberto Naoyuki Yoshimura, André Luiz Molisani, Nilson Eiji Narita, Paulo Francisco Cesar, Hélio Goldenstein
Publikováno v:
Materials Research, Vol 10, Iss 2, Pp 127-133 (2007)
Aluminum nitride is a relatively new engineering ceramic and its mechanical properties have not been extensively studied. In this work, the effects of porosity (~0 to 38%) on sonic velocities, Poisson's ratio, and elastic moduli of partially sintered
Externí odkaz:
https://doaj.org/article/f0cd8c8386ba4ca8b105be5d446396f1
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
AlN compacts with different CaO–Y2O3–C mixtures were sintered between 1100 and 1850 °C to understand the effects of the in situ formed reducing atmosphere on the densification behavior and evolution of the second-phases. AlN with Y2O3 densified
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::822f550e959a6e170fc94ec2aea3b483
https://doi.org/10.1016/j.ceramint.2021.11.211
https://doi.org/10.1016/j.ceramint.2021.11.211
Autor:
Strazzi-Sahyon, Henrico Badaoui, Chimanski, Afonso, Humberto Naoyuki Yoshimura, Henrique, Paulo, Yoshimura, Humberto Naoyuki, Dos Santos, Paulo Henrique
Publikováno v:
International Journal of Prosthodontics; Nov/Dec2019, Vol. 32 Issue 6, p533-540, 8p, 2 Black and White Photographs, 8 Charts
Publikováno v:
2021 20th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (iTherm).
A significant number of studies pertaining to the use of Al 2 O 3 -water and CuO-water as nanofluids are available in the literature. Almost all CuO-water nanofluid studies emphasize the thermal performance enhancement due to the CuO nanoparticles. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46a1becee64c3a1f79dd1013909fdcb3
https://doi.org/10.1109/itherm51669.2021.9503208
https://doi.org/10.1109/itherm51669.2021.9503208
Publikováno v:
Ceramics International. 43:16972-16979
AlN with 0.5–8 wt% CaO was pressureless sintered between 1100 °C and 1800 °C. The results of density, second-phases, microstructure, and weight loss were used to identify the possible mechanisms that may cause a significant delay on the densifica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17d6864e79f1e1973af4ae42fb70ea34
https://doi.org/10.1016/j.ceramint.2017.09.104
https://doi.org/10.1016/j.ceramint.2017.09.104
Publikováno v:
Ceramics International. 43:13970-13977
Glass-infiltrated ceramic biocomposites have shown high strength and toughness, which results in long lifetime, but their translucency is relatively low, limiting the aesthetic quality of dental restorations. This study evaluated the effects of glass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f389f72fee5f0d7cbaa368cb1d09ef24
https://doi.org/10.1016/j.ceramint.2017.07.129
https://doi.org/10.1016/j.ceramint.2017.07.129
Autor:
Humberto Naoyuki Yoshimura, Luis Antonio Ccopa Ybarra, Gilberto José Pereira, Afonso Chimanski, Izabel Fernanda Machado
Publikováno v:
Materials Science Forum. 899:487-492
Cobalt is widely used to produce WC-Co hard metals, but this binder has problems of shortage and unstable price. In this work, cobalt was replaced by an iron aluminide intermetallic binder. WC-10%(Fe3Al-3%B) composite was prepared by vibration millin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b68c7bb6a909b8f80aed4d3f4b59e59
https://doi.org/10.4028/www.scientific.net/msf.899.487
https://doi.org/10.4028/www.scientific.net/msf.899.487
Autor:
Paulo Henrique dos Santos, Henrico Badaoui Strazzi-Sahyon, Afonso Chimanski, Humberto Naoyuki Yoshimura
Publikováno v:
Web of Science
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Made available in DSpace on 2020-12-10T19:39:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-11-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Purpose: To investigate the need for photoactivation of the adhesive system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51117a2d145e4330ab2a8197e78cd923
Autor:
Alvaro Della Bona, Paulo Francisco Cesar, Jason A. Griggs, K.A. Fukushima, Márcia Borba, M.D. Araujo, Humberto Naoyuki Yoshimura
Publikováno v:
Dental Materials. 32:1536-1542
To evaluate the effect of two aging methods (mechanical cycling and autoclave) on the mechanical behavior of veneer and framework ceramic specimens with different configurations (monolithic, two and three-layers).Three ceramics used as framework for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1a3bc26f7eaf331eb1ab3afffb1a243
https://doi.org/10.1016/j.dental.2016.09.005
https://doi.org/10.1016/j.dental.2016.09.005