Publications

Export 95 results:
Sort by: [ Author  (Asc)] Title 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 
A
Alvarez, A., R. Estrada, F. Gueddari, MO Figuiredo, JP Veiga, and L. Vilaseca. "Characterisation of materials used in the aqueduct of Zaghouan-Carthage (Tunisia) along construction and restoration periods." Protection and Conservation of the Cultural Heritage of the Mediterranean Cities. Swets & Zeitlinger, Lisse (2002): 101-106. Abstract
n/a
B
Borges, C., C. Caetano, J. Costa Pessoa, MO Figueiredo, A. Lourenço, Malhoa M. Gomes, TP Silva, and JP Veiga. "Monitoring the removal of soluble salts from ancient tiles by ion chromatography." Journal of Chromatography A. 770 (1997): 195-201. Abstract
n/a
Borges, C., C. Caetano, JC Pessoa, MO Figueiredo, A. Lourenco, MM Gomes, TP Silva, and JP Veiga. "Monitoring the removal of soluble salts from ancient tiles by ion chromatography." Journal of Chromatography a. 770 (1997): 195-201. Abstract
n/a
C
Carvalho, F., A. Lopes, A. T. Curulli, TP Silva, M. M. A. Lima, G. Montesperelli, S. Ronca, G. Padeletti, and JP Veiga. "The Case Study of the Medieval Town Walls of Gubbio in Italy: First Results on the Characterization of Mortars and Binders." Heritage. 1.2 (2018): 468-478.
Carvalho, Fernanda, Pedro Sousa, Nuno Leal, Joaquim Simão, Elissavet Kavoulaki, Maria Margarida Lima, Teresa Pereira da Silva, Hugo Águas, Giuseppina Padeletti, and João Pedro Veiga. "Mortars from the Palace of Knossos in Crete, Greece: A Multi-Analytical Approach." Minerals. 12 (2022): 30. Abstract
n/a
Chaves, Rute Correia, João Pedro Veiga, and António Monge Soares. "Characterization of Chalcolithic Ceramics from the Lisbon Region, Portugal: An Archaeometric Study." Heritage. 5 (2022): 2422-2443. AbstractWebsite

The Chalcolithic period in the Lisbon region, Portugal, is usually divided into three phases chronologically: the Early Chalcolithic, characterized by cylindrical corrugated cups, Full Chalcolithic by so-called acacia-leaf decoration, and Late Chalcolithic by Bell Beaker pottery. The aim of this research is to determine if Chalcolithic ceramic raw materials and production techniques have remained the same over time and whether the pottery is locally produced. Regarding the Lisbon region, 149 ceramic samples from four Chalcolithic settlements (Vila Nova de São Pedro, Penedo do Lexim, Espargueira and Baútas) were evaluated concerning textural, chemical and mineralogical compositions. Textural analysis was performed using optical microscopy, chemical characterization was achieved using micro-energy dispersive X-ray fluorescence spectrometry and mineralogical characterization was undertaken using X-ray powder diffraction and petrographic microscopy as main techniques. Results suggest that production techniques may have remained similar throughout all the Chalcolithic period, with firing temperatures between 700 and 800 °C. Multivariate analysis of results from chemical and mineralogical analyses suggests that multiple sources of raw materials must have been used in the manufacture of the pottery collected at the four Chalcolithic settlements.

Ciocan, Anisoara, Florentino Potecasu, and Joao Pedro Veiga. "CHARACTERISTICS OF THE BLAST FURNACE DUST IN ACCORDANCE WITH THE CONDITIONS IMPOSED BY THE VALORISATION SOLUTION." METALURGIA INTERNATIONAL. 15 (2010): 85-90. Abstract
n/a
Ciocan, Anisoara, Florentino Potecasu, and Joao Pedro Veiga. "CHARACTERISTICS OF THE BLAST FURNACE DUST IN ACCORDANCE WITH THE CONDITIONS IMPOSED BY THE VALORISATION SOLUTION." Metalurgia International. 15 (2010): 85-90. Abstract
n/a
Ciocan, A., F. Potecasu, L. Ivancea, and JP Veiga. "DEVELOPMENT OF THE RAW MATERIAL BASE IN RESPECT TO THE TECHNOLOGICALLY AND CONCEPTUALLY ADVANCED STEELWORK." Metalurgia(Bucharest) (2010). Abstract
n/a
Coutinho, M. L., V. S. F. Muralha, J. Mirao, and JP Veiga. "Non-destructive characterization of oriental porcelain glazes and blue underglaze pigments using mu-EDXRF, mu-Raman and VP-SEM." Applied Physics a-Materials Science & Processing. 114 (2014): 695-703. 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.

Coutinho, Mathilda L., João Pedro Veiga, Maria Filomena Macedo, and Ana Zélia Miller. "Testing the Feasibility of Titanium Dioxide Sol-Gel Coatings on Portuguese Glazed Tiles to Prevent Biological Colonization." Coatings. 10 (2020): 1169. Abstract
n/a
Coutinho, M. L., JP Veiga, L. C. Alves, J. Mirão, L. Dias, A. M. Lima, V. S. Muralha, and MF Macedo. "Characterization of the glaze and in-glaze pigments of the nineteenth-century relief tiles from the Pena National Palace, Sintra, Portugal." Applied Physics A: Materials Science and Processing. 122.7 (2016): 1-10. Abstract

© 2016, Springer-Verlag Berlin Heidelberg.The glaze and in-glaze pigments of the historical nineteenth-century glazed tiles from the Pena National Palace (Sintra, Portugal) were characterized using a multi-analytical approach. Chemical composition and microstructural characterization were ascertained by µ-PIXE, µ-Raman, optical microscopy and VP-SEM–EDS. The manufacturing technique and colour palette in these tiles were found to be close to the ceramic pigments used in traditional majolica. The blue and purple colours derive from cobalt oxide and manganese oxide, respectively. A mixture of Pb–Sn–Sb yellow with cobalt oxide and iron oxide was used for green and dark yellow, respectively, while grey tonalities consist of a complex mixture of cobalt oxide, manganese oxide and Pb–Sn–Sb yellow in different proportions. Results obtained allowed the determination of the oxides and elements used in pigments as well as production techniques, resorting to traditional majolica manufacture, although the tiles were produced by the end of the nineteenth century.

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
D
Dias, MI, Ondina M. Figueiredo, Antónia M. Matos, A. Pais, Maria Isabel Prudêncio, Teresa Pereira Silva, Christopher Ian Burbidge, A. L. Rodrigues, and João Pedro Veiga. "Datação, autenticidade, materiais e pigmentos. Estudos laboratoriais sobre faiança portuguesa e porcelana chinesa produzida para o mercado português, séculos XVI a XVIII." IX Congresso Ibérico de Arqueometria (CIA). 2011. Abstract
n/a
E
Elisa, M., B. A. Sava, I. C. Vasiliu, R. C. C. Monteiro, JP Veiga, L. Ghervase, I. Feraru, and R. Iordanescu. "Optical and structural characterization of samarium and europium-doped phosphate glasses." Journal of Non-Crystalline Solids. 369 (2013): 55-60. Abstract
n/a
Elisa, M., B. A. Sava, I. C. Vasiliu, R. C. C. Monteiro, JP Veiga, L. Ghervase, I. Feraru, and R. Iordanescu. "Optical and structural characterization of samarium and europium-doped phosphate glasses." Journal of Non-Crystalline Solids. 369 (2013): 55-60. Abstract
n/a
F
Figueiredo, Ondina M., Teresa Pereira Silva, João Pedro Veiga, Isabel M. Prudêncio, Isabel M. Dias, Maria Antónia Matos, and Alexandre Manuel Pais. "Blue pigments in XVI-XVII century glazes: a comparative study between portuguese faiences and contemporary chinese porcelains manufactured for portuguese market." 18th International Materials Research Congress & 2nd Latin-American Symposium Physics & Chemistry Methods in Archeology, Art and Cultural Heritage Conservation, LASMAC-IMRS2009, August 16-20, 2009. 2009. Abstract
n/a
Figueiredo, Ondina M., João Pedro Veiga, Teresa Pereira Silva, and José António Paulo Mirão. "Lead in jarosite: an X-ray absorption spectroscopy approach." 37th International Symposium on Environmental Analytical Chemistry, ISEAC-37. 2012. Abstract
n/a
Figueiredo, Ondina M., Teresa Pereira Silva, João Pedro Veiga, Daniel PS Oliveira, and Maria João Batista. "Rhenium in waste material of the sulphur factory from the S. Domingos abandoned mine (Iberian Pyrite Belt, southern Portugal): an X-ray absorption spectroscopy approach." 9th International Symposium on Environmental Geochemistry, 9th ISEG. 2012. Abstract
n/a
Figueiredo, MO, TP Silva, JP Veiga, AMD Diogo, and L. Trindade. "Archaeology of Lisbon Old City: ceramic crucibles from pre-XVIIIth century metallurgical foundries." Applied Physics a-Materials Science & Processing. 79 (2004): 327-329. Abstract
n/a
Figueiredo, E., A. Lackinger, B. C. Rey, R. J. C. Silva, JP Veiga, and J. Mirão. "An Experimental Approach for Smelting Tin Ores From Northwestern Iberia." Materials and Manufacturing Processes. 32 (2017): 765-774.
Figueiredo, MO, T. Pereira da Silva, JP Veiga, C. Leal Gomes, and V. De Andrade. "The blue colouring of beryls from Licungo, Mozambique: an X-ray absorption spectroscopy study at the iron K-edge." Mineralogical Magazine. 72 (2008): 175-178. Abstract
n/a
Figueiredo, Elin, Alexandra Rodrigues, João Fonte, Emmanuelle Meunier, Filipa Dias, Alexandre Lima, José Alberto Gonçalves, Luís Gonçalves-Seco, Filipe Gonçalves, Manuel F. C. Pereira, Rui JC Silva, and João P. Veiga. "Tin and Bronze Production at the Outeiro de Baltar Hillfort (NW Iberia)." Minerals. 12 (2022). AbstractWebsite

Findings of Iron Age metallurgical activities related to tin metal and mining are very rare. In the present work, we present a detailed study of the Outeiro de Baltar hillfort, dated to the Late Iron Age/Early Roman period, located in a place where 20th century tin mining work took place. Elemental and microstructural analysis by portable, micro and wavelength dispersive X-ray fluorescence spectrometry (pXRF, micro-XRF and WDXRF) and scanning electron microscopy with energy dispersion spectrometer (SEM-EDS) showed that metallurgical debris found at the archaeological site is related to tin smelting and binary and ternary bronze productions. Analysis of the artefacts of diverse typologies found at the site showed that a variety of metals and alloys were in circulation and use. Samples of tin ores (cassiterite) from the region were analyzed for comparison with an archaeological tin slag from the site. The analytical results point to the production of tin metal using local cassiterite and the production of bronze by directly adding cassiterite into a smelting process. Furthermore, data of remote sensing (airborne Light Detection and Ranging (LiDAR) and historical aerial imagery) and Geographical Information System (GIS) mapping were combined with archival mining documentation and maps to retrieve a landscape context for the site. The study showed that the place of the Outeiro de Baltar hillfort (NW Iberia) was mined periodically over time.

Figueiredo, MO, JP Veiga, and J. P. Mirao. "Modelling the size of red-colouring copper nanoclusters in archaeological glass beads." Applied Physics a-Materials Science & Processing. 83 (2006): 499-502. Abstract
n/a