Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Wander Luiz Vasconcelos"'
Autor:
Jean Philippe Santos Gherardi de Alencar, Bruno Amaral Pereira, José Adilson de Castro, Valdirene Gonzaga de Resende, Wander Luiz Vasconcelos
Publikováno v:
REM: International Engineering Journal, Vol 74, Iss 4, Pp 451-461 (2021)
Abstract The Direct Reduction (DR) process has been growing worldwide, and there are strong context suggestions that it will grow even more. One of these factors is the environmental pressure that occurs worldwide, and there are already projects to m
Externí odkaz:
https://doaj.org/article/d23ef4cec4df4c3eac85e42bccaac075
Publikováno v:
Materials Research, Vol 24, Iss 5 (2021)
Abstract Despite the high potential of the freeze-casting technique for production of porous inorganic substrates, there is a lack of studies on tubular geometries and their mechanical behavior under different pressure scenarios. In this work, the me
Externí odkaz:
https://doaj.org/article/62694c31f0cb4077aebc0c6d3d7fbc7f
Publikováno v:
Materials Research, Vol 22, Iss 5 (2019)
The synthesis of mesoporous materials in macroscopic scale, as for example, the monoliths, has been of great interest in view of the wide range of applications that this material holds. Thus, this work consists of the production of silica monoliths f
Externí odkaz:
https://doaj.org/article/ab6b39b57a7d42458a86ddc9a0aac043
Autor:
Daniel Dornellas Athayde, Ana Clara Amado Dolabella, Bruno Cunha Dias, Bruno Maciel Sousa, Débora Guimarães da Silva, Daniela Cordeiro Leite Vasconcelos, Wander Luiz Vasconcelos
Publikováno v:
Materials Research, Vol 22, Iss 2 (2019)
Development of new ceramic membranes has recently grown due to its superior thermal and mechanical stability. An interesting approach to manufacture asymmetric membranes is the production of aligned pore structure by the freeze-casting method. The la
Externí odkaz:
https://doaj.org/article/3e9fd5736c5946ea9a0df1429461ad4f
Publikováno v:
Materials Research, Vol 22, Iss 2 (2019)
Abstract The use of geopolymer has been studied as a potential substitute for Portland cement due to lower CO2 emission and improvements on structural properties. Some of the major raw materials used in the manufacture of the geopolymer are: steel sl
Externí odkaz:
https://doaj.org/article/4a340845b9144914a1f5b3a5131930a6
Autor:
Jéssica de Oliveira Notório Ribeiro, Daniela Cordeiro Leite Vasconcelos, Wander Luiz Vasconcelos
Publikováno v:
Materials Research, Vol 22, Iss 1 (2018)
In the present report, Al-SBA mesoporous materials were investigated for use as water adsorbents. Different precursors for aluminum were investigated: aluminum sulfate and nitrate, boehmite, and aluminum tri-sec-butoxide. Furthermore, three different
Externí odkaz:
https://doaj.org/article/37675ae77d3b41c380f96e49ea2e7c0a
Autor:
Gabriela Oliveira de Magalhães, Jéssica de Oliveira Notório Ribeiro, Daniela Cordeiro Leite Vasconcelos, Wander Luiz Vasconcelos
Publikováno v:
Materials Research, Vol 21, Iss 6 (2018)
Mesoporous silica materials have been widely investigated for their great potential as competitive adsorbents and catalysts in different areas, due to their ordered and uniform porous structures and high surface area. In order to increase the availab
Externí odkaz:
https://doaj.org/article/5f4aff82654449f8892e5a643f5fb1dd
Autor:
Gabriel Henrique Horta de Oliveira, Paulo Cesar Corrêa, Fábio Lúcio Santos, Wander Luiz Vasconcelos o Santos, Carlito Calil Júnior, Fernanda Machado Baptestini, Guillermo Asdrúbal Vargas-Elías
Publikováno v:
Semina: Ciências Agrárias, Vol 35, Iss 4, Pp 1813-1828 (2014)
Flowability is an important characteristic of handling process for efficiency and reliability purpose of post-harvest operations, which are governed by the physical properties of the product. Physical properties determination is an important factor f
Externí odkaz:
https://doaj.org/article/5f6848a1edfe422883924db900447960
Autor:
Túlio Hallak Panzera, Kurt Strecker, Luiddimar Geraldo de Oliveira, Wander Luiz Vasconcelos, Marco Antônio Schiavon
Publikováno v:
Materials Research, Vol 13, Iss 4, Pp 535-540 (2010)
Mineral rock wastes are being widely investigated due to possible damage to the environment when discarded indiscriminately in the nature, but also because of their great potential as ceramic raw materials. This work aims to study the effect of steat
Externí odkaz:
https://doaj.org/article/d866aee5efab45b79269a24800397bfa
Publikováno v:
Materials Research, Vol 12, Iss 3, Pp 315-320 (2009)
The infrared bands of amethyst and prasiolite samples from different origins were correlated to the trace elements contents. Amethysts have an iron content greater than 20 ppm and a low content of sodium and potassium. Prasiolites have an aluminum co
Externí odkaz:
https://doaj.org/article/65b455cab0b6425080a3f1d845df4ab1