Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Dimitrios Samios"'
Autor:
Juliana Silva Lemões, Claudia Fernanda Lemons e Silva, Sabrina Peres Farias Avila, Cândida Raquel Scherrer Montero, Sérgio Delmar dos Anjos e Silva, Dimitrios Samios, Maria do Carmo Ruaro Peralba
Publikováno v:
Electronic Journal of Biotechnology, Vol 31, Iss C, Pp 67-74 (2018)
Background: Pretreatment of lignocellulosic biomass is essential for using it as a raw material for chemical and biofuel production. This study evaluates the effects of variables in the chemical pretreatment of the Arundo biomass on the glucose and x
Externí odkaz:
https://doaj.org/article/02b4de8303db49ea8bfdb7d7748e1fc8
Publikováno v:
Química Nova, Vol 39, Iss 3, Pp 267-272 (2016)
In this work, Doehlert experimental design was used to optimize the Transesterification Double Step Process (TDSP) method of methyl soybean oil biodiesel production which starts with a basic catalysis followed by an acidic catalysis. The conversion v
Externí odkaz:
https://doaj.org/article/255dd1ed6ae34a3d8a2557ca8448301f
Publikováno v:
Química Nova, Vol 37, Iss 5, Pp 810-815 (2014)
In this study, hierarchical cluster analysis (HCA) and principal component analysis (PCA) were used to classify blends produced from diesel S500 and different kinds of biodiesel produced by the TDSP methodology. The different kinds of biodiesel studi
Externí odkaz:
https://doaj.org/article/272ebf7ca11e44e2ad40b927cb21fda7
Publikováno v:
Polímeros, Vol 23, Iss 1, Pp 1-6 (2013)
A dynamic mechanical analysis (DMTA) study was conducted on epoxy-amine networks crosslinked in the presence of low contents of hydroxypropyl cellulose (HPC). The epoxy resin chosen was diglycidylether of bisphenol-A (DGEBA) and the crosslinker was 4
Externí odkaz:
https://doaj.org/article/b4eb965a0c7540bb94e890036b8ca43e
Autor:
Quelen Bulow Reiznautt, Bruna Girelli, Vinícius Millan Santa Catharina, Dimitrios Samios, Irene Teresinha Santos Garcia
Publikováno v:
Química Nova, Vol 36, Iss 9, Pp 1447-1452 (2013)
On undergraduate courses, practical classes represent periods in which students can verify the concepts presented in theoretical classes. Conversely, the teaching internship in graduate programs allows these students to incorporate pedagogical practi
Externí odkaz:
https://doaj.org/article/76e9ac0e166d489c8ded2dea3055f1ee
Autor:
Diogo Müller de Oliveira, Diego Paulo Ongaratto, Luiz Antonio Mazzini Fontoura, Fabrício Fredo Naciuk, Vinícius Oliveira Batista dos Santos, Jéssica Danieli Kunz, Marcelo Volpatto Marques, Alexander Ossanes de Souza, Claudio Martin Pereira de Pereira, Dimitrios Samios
Publikováno v:
Química Nova, Vol 36, Iss 5, Pp 734-737 (2013)
Methanolic transesterification of oils and fats was carried out in a two steps procedure, under basic and acidic catalysis. Palm, soybean, canola, corn, rice, grapeseed, sunflower, peanut, pequi and olive oils, besides tallow and lard were used as fe
Externí odkaz:
https://doaj.org/article/ec3f0c68aa394035a62e13ba5c148a73
Publikováno v:
Polímeros, Vol 16, Iss 2, Pp 111-115 (2006)
The introduction of epoxy groups into the main chain of elastomers has emerged as a promising alternative, considering the monitoring of polymer-filler interaction leading to changes in the properties of vulcanizates. The epoxidation reaction (in sit
Externí odkaz:
https://doaj.org/article/24bfea7f6d2c485aa3a17ed6cbd2caa8
Publikováno v:
Polímeros, Vol 15, Iss 2, Pp 151-155 (2005)
New types of polyurethanes were prepared by reacting diisocyanates and formiated soy polyols with different OH functionalities. Thermal properties and degradation kinetics were investigated by TGA. All prepared PU's showed at least two-weight loss st
Externí odkaz:
https://doaj.org/article/f5be6161a6ca41b99197b290d43b8132
Publikováno v:
Polímeros, Vol 14, Iss 5, Pp 318-321 (2004)
A utilização de modificações químicas de polidienos comerciais tem sido estudada como um meio alternativo à síntese de novos polímeros, para otimização das propriedades finais destes materiais através da introdução de diferentes grupamen
Externí odkaz:
https://doaj.org/article/177e89f34ab74ec990dd3292f63b499c
Autor:
Ricardo M. de Martins, Carolina A. Silva, Cristiane Becker, Dimitrios Samios, Clara I. D. Bica, Marcelo Christoff
Publikováno v:
Polímeros, Vol 12, Iss 2, Pp 109-114 (2002)
Fluorescence probing, viscosity and light scattering measurements have been combined to study the aggregation of different anionic surfactants mainly in dilute solutions (0.5% w/v) of (hydroxypropyl)cellulose (HPC MW 173,000), in moderate ionic stren
Externí odkaz:
https://doaj.org/article/2eff465a754a4b78a7ec03b9d6624dc3