Publications

Export 3 results:
Sort by: Author [ Title (Asc)] Type Year
A B C D E F G H [I] J K L M N O P Q R S T U V W X Y Z   [Show ALL]
I
Figueiredo, Ondina M., Teresa Pereira Silva, and João Pedro Veiga. "Inferring the formal oxidation state of 3d metal ions from K-edge XANES spectra: how far can we go for cobalt in ancient chinese porcelain glazes?" 2nd International Workshop Physical and Chemical Analytical echniques in Cultural Heritage. 2012. Abstract
n/a
Coutinho, Mathilda Larsson, João Pedro Veiga, Andreia Ruivo, Teresa Pena, Eduardo Salas Colera, Augusta Lima, Elin Figueiredo, Marine Cotte, Margarida Lima, and others. "An insight on the firing condition of Chinese blue-and-white porcelain through XANES." Journal of Analytical Atomic Spectrometry (2022). Abstract
n/a
Coutinho, M. L., A. Z. Miller, M. A. Rogerio-Candelera, J. Mirão, L. Cerqueira Alves, JP Veiga, H. Águas, S. Pereira, A. Lyubchyk, and MF Macedo. "An integrated approach for assessing the bioreceptivity of glazed tiles to phototrophic microorganisms." Biofouling. 32.3 (2016): 243-259. Abstract

© 2016 Taylor {&} Francis.A laboratory-based methodology was designed to assess the bioreceptivity of glazed tiles. The experimental set-up consisted of multiple steps: manufacturing of pristine and artificially aged glazed tiles, enrichment of phototrophic microorganisms, inoculation of phototrophs on glazed tiles, incubation under optimal conditions and quantification of biomass. In addition, tile intrinsic properties were assessed to determine which material properties contributed to tile bioreceptivity. Biofilm growth and biomass were appraised by digital image analysis, colorimetry and chlorophyll a analysis. SEM, micro-Raman and micro-particle induced X-ray emission analyses were carried out to investigate the biodeteriorating potential of phototrophic microorganisms on the glazed tiles. This practical and multidisciplinary approach showed that the accelerated colonization conditions allowed different types of tile bioreceptivity to be distinguished and to be related to precise characteristics of the material. Aged tiles showed higher bioreceptivity than pristine tiles due to their higher capillarity and permeability. Moreover, biophysical deterioration caused by chasmoendolithic growth was observed on colonized tile surfaces.