Zobrazeno 1 - 10
of 193
pro vyhledávání: '"Sidnei Paciornik"'
Publikováno v:
Advances in Bamboo Science, Vol 9, Iss , Pp 100100- (2024)
This study investigates the influence of elastic properties and nodes on the flexural behaviour of bamboo culms by comparing different characterization techniques and theoretical approaches. The most representative parts of the bamboo culm were selec
Externí odkaz:
https://doaj.org/article/5b7a7c2ef982497abcbd740ad5414661
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-13 (2023)
Abstract Foam has been shown to have great potential to significantly improve sweep efficiency during gas injection in oil recovery, remediation of contaminated sites, gas storage, and acidification processes. The gas mobility reduction largely depen
Externí odkaz:
https://doaj.org/article/1a468e39a60346d0be465f43b8cc5fbd
Autor:
Lorenleyn De la Hoz Alford, Camila Gomes Peçanha de Souza, Sidnei Paciornik, José Roberto M. d’Almeida, Brenno Santos Leite, Harold C. Avila, Fabien Léonard, Giovanni Bruno
Publikováno v:
Materials, Vol 16, Iss 5, p 2118 (2023)
Two biopolyol-based foams derived from banana leaves (BL) or stems (BS) were produced, and their compression mechanical behavior and 3D microstructure were characterized. Traditional compression and in situ tests were performed during 3D image acquis
Externí odkaz:
https://doaj.org/article/d716c017c18d43bb85af18de3af32223
Autor:
Thalita Dias Pinheiro Caldas, Karen Soares Augusto, Julio César Álvarez Iglesias, Sidnei Paciornik, Alei Leite Alcântara Domingues
Publikováno v:
REM: International Engineering Journal, Vol 73, Iss 3, Pp 345-352 (2020)
Abstract The pelletizing process agglomerates ore fines previously considered as tailings and makes its application possible in the form of pellets. During the process, the pellets are subjected to various compressive forces and temperature changes,
Externí odkaz:
https://doaj.org/article/4e6b292dd51c4173b7c0072645b2c898
Publikováno v:
REM: International Engineering Journal, Vol 73, Iss 2, Pp 197-203 (2020)
Abstract The discrimination between pores and cracks is an important step in the microstructural analysis of iron ore pellets. While the porosity is fundamental during the reduction process in blast furnaces, cracks are strongly detrimental to the me
Externí odkaz:
https://doaj.org/article/c6d68955f3084b4abd315002ba8eefcc
Publikováno v:
Materials Research, Vol 22, Iss suppl 1 (2019)
TiO2 nanorods present good performance as catalysts in the sorption behavior of magnesium hydride. In the present study, the morphology of TiO2 nanorods produced from titanate nanotubes heat-treated at 550 °C (NR550), 650 °C (NR650) and 750 °C (NR
Externí odkaz:
https://doaj.org/article/b9124ba85a3e4e17b084b4480cedcae2
Autor:
Julio César Álvarez Iglesias, Karen Soares Augusto, Otávio da Fonseca Martins Gomes, Alei Leite Alcântara Domingues, Maria Beatriz Vieira, Catia Casagrande, Sidnei Paciornik
Publikováno v:
Journal of Materials Research and Technology, Vol 7, Iss 3, Pp 376-380 (2018)
This paper presents an automatic system for mineralogical and textural characterization of iron ores based on digital microscopy and image analysis. It employs a motorized and computer-controlled reflected light microscope in a correlative approach t
Externí odkaz:
https://doaj.org/article/4b3bdfd4bb534151b7716bc8adfad7f1
Autor:
Karen Soares Augusto, Sidnei Paciornik
Publikováno v:
Materials Research, Vol 21, Iss 2 (2018)
This work proposes a three-dimensional methodology to characterize porosity in iron ore pellets by X-ray Microtomography (microCT). An image analysis routine was developed to discriminate and quantify open/closed porosity. The results were compared t
Externí odkaz:
https://doaj.org/article/816b0d263c4f4a5d81b520cc3edfc98d
Autor:
Natália Araújo Silva Prado, Reinaldo de Souza Ferreira, Marcos Henrique de Pinho Maurício, Sidnei Paciornik, Mauro Sayão de Miranda
Publikováno v:
International Journal of Dentistry, Vol 2016 (2016)
The present study evaluated the influence of the cement film thickness on the push-out bond strength of glass fiber posts in the cervical, medium, and apical thirds of root canal spaces. Thirty roots were randomly divided into three groups, according
Externí odkaz:
https://doaj.org/article/39777d7c8b424dd7a9349a2d9f0d0d8f
Publikováno v:
Materials Research, Vol 10, Iss 2, Pp 153-159 (2007)
Digital image analysis was used to fully characterize the microstructure of human dentin. With the automatic routine implemented, field and region parameters related to human dentin characterization were obtained in significant statistical quantities
Externí odkaz:
https://doaj.org/article/0971b47c618640c29f2f5b1f0ec5c6dc