Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Carlos Pérez Bergmann"'
Autor:
Oscar Rubem K. Montedo, Pâmela C. Milak, Cristian A. Faller, Carlos Pérez Bergmann, Agenor De Noni Jr.
Publikováno v:
REM: International Engineering Journal, Vol 73, Iss 2, Pp 179-188 (2020)
Abstract This study aims to evaluate the influence of the 11.6Li2O-16.8ZrO2-68.2SiO2-3.4Al2O3 (mol%) glass-ceramic addition (LZSA, 7 to 21 vol%) on the erosive wear of alumina in comparison to values of pure alumina obtained from the literature. Thus
Externí odkaz:
https://doaj.org/article/7f0760d755d9462b84152b2d57020bfd
Autor:
Alan Paskieviski Machado, Sabrina Arcaro, Fabiano Raupp-Pereira, Carlos Pérez Bergmann, Oscar Rubem Klegues Montedo
Publikováno v:
Materials Research, Vol 24, Iss 5 (2021)
Abstract In Brazil, the production of each ton of steel generates approximately 621 kg of waste and direct co-products. One of the components that generates a high amount of waste is the refractory material used in the steel process. So, in this stud
Externí odkaz:
https://doaj.org/article/7b108c8b218e43f2bf879fff328f69de
Autor:
Júlia Daneluz, Juliana da Silva Favero, Venina dos Santos, Valeria Weiss-Angeli, Lucas Bonan Gomes, André Sampaio Mexias, Carlos Pérez Bergmann
Publikováno v:
Materials Research, Vol 23, Iss 2 (2020)
Abstract The clay minerals have characteristics and properties that allow their applicability in the cosmetic area, being incorporated into formulations as an active principle. Therefore, the aim of this work is characterizing and evaluating the infl
Externí odkaz:
https://doaj.org/article/fd9d68ab680a45ee969ef856441a5cee
Publikováno v:
Materials Research, Vol 23, Iss 2 (2020)
RESUMO Polyols as solvents are widely and successfully used in various methodologies to obtain zinc oxide nanostructures. One of the main reasons of using polyols is related to its capacity to prevent the agglomeration of ZnO nanoparticles during the
Externí odkaz:
https://doaj.org/article/d7183b1d92a241d28f04ad4b91f82166
Autor:
Claudir Gabriel Kaufmann Jr, Rúbia Young Sun Zampiva, Carlos Pérez Bergmann, Annelise Kopp Alves, Mortari Roberto Sergio, Pavlović Ana
Publikováno v:
FME Transactions, Vol 46, Iss 2, Pp 151-156 (2018)
Carbon nanotubes (CNTs) are studied because of their diverse applications in many fields, such as medicine, computing, physics, chemistry, and others. Therefore, it is crucial to develop techniques for producing a large volume of high-quality multi-w
Externí odkaz:
https://doaj.org/article/2a06ab9da7044fa48c939262de1914cf
Autor:
Rúbia Young Sun Zampiva, Claudir Gabriel Kaufmann Jr, Annelise Kopp Alves, Carlos Pérez Bergmann
Publikováno v:
FME Transactions, Vol 46, Iss 2, Pp 157-164 (2018)
Solution combustion synthesis (SCS) has been widely applied to produce oxide catalysts due to the possibility of producing highly pure and homogeneous nanostructured powders at low cost. The smaller the particles are and the higher the surface area i
Externí odkaz:
https://doaj.org/article/12fae222b2aa4d0f989cda939696e541
Publikováno v:
Materials Research, Vol 20, Iss 3, Pp 843-852 (2017)
Oil is a major pollutant of water resources, affects aquatic life, causing environmental degradation. Currently there is an increase in studies of membrane applied to separation of oil-water. Among these membranes, there are composite membranes, whic
Externí odkaz:
https://doaj.org/article/3daac0c48552489181c198548d265874
Publikováno v:
Materials Research, Vol 19, Iss 6, Pp 1372-1375 (2016)
Water pollution by organic compounds is one of the major challenges faced by industries that use dyeing processes. Thus, some methods were developed for degrading dyes in wastewaters, including heterogeneous photocatalysis by semiconductor oxides. Ho
Externí odkaz:
https://doaj.org/article/58dc17915c7d431d9928435abc2491b3
Autor:
Isadora Martini Garcia, Vicente Castelo Branco Leitune, Antonio Shigueaki Takimi, Carlos Pérez Bergmann, Susana Maria Werner Samuel, Mary Anne Melo, Fabrício Mezzomo Collares
Publikováno v:
Journal of Functional Biomaterials, Vol 11, Iss 1, p 7 (2020)
The insufficient radiopacity of dental adhesives applied under composite restorations makes the radiographic diagnosis of recurrent caries challenging. Consequently, the misdiagnosis may lead to unnecessary replacement of restorations. The aims of th
Externí odkaz:
https://doaj.org/article/6d8efdaf821c4cbfb49dfc761e6766f2
Autor:
Dionisio da Silva Biron, Patrícia Poletto, Jocelei Duarte, Mára Zeni, Carlos Pérez Bergmann, Venina dos Santos
Publikováno v:
Materials Research, Vol 18, Iss 4, Pp 748-755 (2015)
In this study, polymer/ceramic composite membranes were prepared and characterized. The polymer used was polyamide 66 (PA66) deposited by dip coating on the inner surface of α-alumina-based (Al2O3) microporous tube. A coating on the ceramic support
Externí odkaz:
https://doaj.org/article/2be3c6b9cddf424f90ea2db0f2f7de1b