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Dive into the research topics where Roberlucia A. Candeia is active.

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Featured researches published by Roberlucia A. Candeia.


Materials Letters | 2004

Synthesis and characterization of spinel pigment CaFe2O4 obtained by the polymeric precursor method

Roberlucia A. Candeia; M. I. B. Bernardi; E. Longo; I. M. G. Santos; A. G. Souza

The CaFe2O4 composition was studied, in order to analyze its physical and chemical behavior, verifying its stability under industrial conditions, when applied as pigments. The characterization was accomplished using thermal analysis, X-ray diffraction (XRD), nitrogen adsorption, scanning electronic microscopy (SEM) and diffuse reflectance. It observed successions exothermics reactions, adequate in events of thermal decomposition of the organic material, reach your stability in 700 jC. The material became completely crystalline at 800 jC. Between 700 and 1100 jC, the color was stabilized, showing an absorption band in the region of 650 to 750 nm, characteristic of the red color. D 2003 Elsevier B.V. All rights reserved.


Renewable & Sustainable Energy Reviews | 2007

Thermoanalytical characterization of castor oil biodiesel

Marta M. Conceição; Roberlucia A. Candeia; Fernando Carvalho Silva; Aline F. Bezerra; Valter J. Fernandes; A. G. Souza


Energy & Fuels | 2005

Rheological Behavior of Castor Oil Biodiesel

Marta M. Conceição; Roberlucia A. Candeia; Hermesson J. Dantas; L. E. B. Soledade; and Valter J. Fernandes; A. G. Souza


Materials Research Bulletin | 2006

MgFe2O4 pigment obtained at low temperature

Roberlucia A. Candeia; Marcos Antonio feitosa de Souza; M.I.B. Bernardi; S.C. Maestrelli; I. M. G. Santos; A. G. Souza; E. Longo


Ceramics International | 2007

Monoferrite BaFe2O4 applied as ceramic pigment

Roberlucia A. Candeia; Marcos Antonio feitosa de Souza; Maria Inês Basso Bernardi; S.C. Maestrelli; I. M. G. Santos; A. G. Souza; E. Longo


Journal of Thermal Analysis and Calorimetry | 2007

Thermal and rheological behavior of diesel and methanol biodiesel blends

Roberlucia A. Candeia; J. C. O. Freitas; Marcos Antonio feitosa de Souza; Marta M. Conceição; Ieda M. G. Santos; L. E. B. Soledade; A. G. Souza


Journal of Thermal Analysis and Calorimetry | 2011

Influence of the storage on the thermo-oxidative stability of methyl and ethyl esters by PDSC

Roberlucia A. Candeia; F. S. M. Sinfrônio; T. C. Bicudo; N. Queiroz; A. K. D. Barros Filho; L. E. B. Soledade; I. M. G. Santos; A. L. Souza; A. G. Souza


Journal of Thermal Analysis and Calorimetry | 2007

Effect of the modifier ion on the properties of MgFe2O4 and ZnFe2O4 pigments

Camila S. Xavier; Roberlucia A. Candeia; M. I. B. Bernardi; S. J. G. Lima; Elson Longo; C. A. Paskocimas; L. E. B. Soledade; A. G. Souza; Ieda M. G. Santos


Journal of Thermal Analysis and Calorimetry | 2011

Evaluation of the thermal stability of biodiesel blends of castor oil and passion fruit

Rosiane Maria da Costa Farias; Marta M. Conceição; Roberlucia A. Candeia; M. C. D. Silva; V. J. Fernandes; A. G. Souza


Journal of Thermal Analysis and Calorimetry | 2005

Thermal and structural characterization OF Sr1-xCoxTiO3 obtained by polymeric precursor method

Marcos Antonio feitosa de Souza; Roberlucia A. Candeia; S. J. G. Lima; Maria R. Cassia-Santos; Ieda M. G. Santos; E. Longo; A. G. Souza

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A. G. Souza

Federal University of Paraíba

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L. E. B. Soledade

Federal University of Paraíba

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I. M. G. Santos

Federal University of Paraíba

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Ieda M. G. Santos

Federal University of Paraíba

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E. Longo

Federal University of São Carlos

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Marta M. Conceição

Federal University of Rio Grande do Norte

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S. J. G. Lima

Federal University of Paraíba

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Camila S. Xavier

Federal University of Paraíba

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