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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
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
Wrona, Paweł, Zenon Różański, Grzegorz Pach, Adam P. Niewiadomski, and João Pedro Veiga. "Historical Outline of Iron Mining and Production in the Area of Present-Day Poland." Minerals. 11 (2021): 1136. Abstract
del Sanjuán Sánchez, Ursula Pilar, Juan Herrera Herbert, Joao Pedro Veiga, Alicia López Mederos, Maria Muñiz Fernandez, Alicia Calvo Paz, Carlos Carrión Isaacs, Lu{\'ıs Vela Bárez, and Guillermo Pérez de Gracia D{\'ıaz. "MINEHERITAGE: An innovative education project linking European mining history with the modern European society development." (2021). Abstract
Silva, Teresa P., João X. Matos, Daniel de Oliveira, Igor Morais, Pedro Gonçalves, Lu{\'ıs Albardeiro, Fernanda Carvalho, Ugur D. Menda, and João P. Veiga. "Orange Pickeringite from the Algares 30-Level Adit, Aljustrel Mine, Iberian Pyrite Belt, Portugal." Minerals. 11 (2021): 1115. Abstract
Silva, Teresa P., João X. Matos, Daniel de Oliveira, João P. Veiga, Igor Morais, Pedro Gonçalves, and Lu{\'ıs Albardeiro. "Mineral Inventory of the Algares 30-Level Adit, Aljustrel Mine, Iberian Pyrite Belt, Portugal." Minerals. 10 (2020): 853. Abstract
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
Silva, TP, D. P. S. Oliveira, JP Veiga, P. Ávila, C. Candeias, E. Salas-Colera, and R. Caldeira. "Mineralogy and chemistry of incrustations resulting from the 2014–2015 eruption of Fogo volcano, Cape Verde." Bulletin of Volcanology. 81.4 (2019): 23 (17 pp).
Figueiredo, E., J. Fonte, A. Lima, JP Veiga, R. J. C. Silva, and J. Mirão. "Ancient tin production: Slags from the Iron Age Carvalhelhos hillfort (NW Iberian Peninsula)." Journal of Archaeological Science. 93 (2018): 1-16.
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.
Monteiro, R. C. C., A. A. S. Lopes, M. M. R. A. Lima, and J. P. B. Veiga. "Thermal characteristics and crystallization behavior of zinc borosilicate glasses containing Nb2O5." Journal of Non-Crystalline Solids. 491 (2018): 124-132.
Kullberg, A. T. G., A. A. S. Lopes, J. P. B. Veiga, and R. C. C. Monteiro. "Crystal growth in zinc borosilicate glasses." Journal of Crystal Growth. 457 (2017): 239-243. AbstractWebsite

Glass samples with a molar composition (64+x)ZnO-(16-x)B2O3-20SiO2, where x=0 or 1, were successfully synthesized using a melt-quenching technique. Based on differential thermal analysis data, the produced glass samples were submitted to controlled heat-treatments at selected temperatures (610, 615 and 620{\{}$\backslash$textdegree{\}}C) during various times ranging from 8 to 30h. The crystallization of willemite (Zn2SiO4) within the glass matrix was confirmed by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). Under specific heat-treatment conditions, transparent nanocomposite glass-ceramics were obtained, as confirmed by UV-vis spectroscopy. The influence of temperature, holding time and glass composition on crystal growth was investigated. The mean crystallite size was determined by image analysis on SEM micrographs. The results indicated an increase on the crystallite size and density with time and temperature. The change of crystallite size with time for the heat-treatments at 615 and 620{\{}$\backslash$textdegree{\}}C depended on the glass composition. Under fixed heat-treatment conditions, the crystallite density was comparatively higher for the glass composition with higher ZnO content. {\{}©{\}} 2016.

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.
Silva, TP, D. P. S. Oliveira, M. J. Batista, JP Veiga, F. Noronha, and J. X. Matos. "Rhenium ocurrence in Portugal: an overview considering the valorisation of mineral resources." Rhenium, Properties, Uses and Occurrences. Ed. Eric James. New York: Nova Science Publishers Inc. New York, 2017. 85-116.
Lackinger, Aaron, Cristina Fernández Fernández, Beatriz Comendador Rey, Elin Figueiredo, João P. Veiga, and Rui JC Silva. "Sacar el estaño de las piedras: un procedimiento artesanal para la obtención la obtención de estaño en la Galicia Meridional." Presente y futuro de los paisajes mineros del pasado: Estudios sobre miner{\'ıa, metalurgia y poblamiento. Editorial Universidad de Granada, 2017. 259-267. Abstract
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.

Kullberg, A. T. G., A. A. S. Lopes, J. P. B. Veiga, M. M. R. A. Lima, and R. C. C. Monteiro. "Formation and crystallization of zinc borosilicate glasses: Influence of the ZnO/B2O3." Journal of Non-Crystalline Solids. 441 (2016): 79-85. Abstract

© 2016 Elsevier B.V. All rights reserved.Different glasses based on the ZnO-B2O3-SiO2 system, with a ZnO content ≥ 60 mol{%} and a fixed SiO2 content (20 mol{%}), were synthesised using a melt-quenching method. Glass samples with zinc oxide concentrations as high as 65 mol{%} were prepared successfully without deteriorating the glass-forming ability. The glass samples were submitted to controlled heat-treatments, and the effect of the ZnO/B2O3 molar ratio on the formation of crystalline phases within the glass matrix was investigated by means of differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). DTA results indicated that the glass transition and the onset crystallization temperatures of the studied glasses tended to increase with the increment on the ZnO/B2O3 ratio. XRD data showed that the zinc binary crystalline phases, willemite (Zn2SiO4), a zinc orthosilicate, and zinc borate (Zn3B2O6) could be present in the crystallized glasses, depending on the heat-treatment conditions. The formation of willemite was promoted by an increasing ZnO/B2O3 ratio. Microstructural observations performed by SEM indicated that under controlled experimental parameters (glass composition, heat-treatment temperature and time) the precipitation of nanocrystals within the glass matrix can be achieved, resulting in transparent and translucent willemite glass-ceramics.

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.

Figueiredo, Elin, Beatriz Comendador Rey, João Fonte, Emmanuelle Meunier, Aaron Lackinger, Rui JC Silva, João Pedro Veiga, Carlo Bottaini, José Mirão, and Alexandre Lima. "Estanho antigo no Noroeste Peninsular: uma abordagem multidisciplinar e transfronteiriça para o estabelecimento de uma visão integrada." XI Congresso Ibérico de Arqueometria. 2015. Abstract
Silva, Teresa Pereira, João Pedro Veiga, Daniel PS Oliveira, Maria João Batista, Diogo Rosa, and Ondina M. Figueiredo. "A utilização da radiação de sincrotrão no estudo de materiais geológicos; breve abordagem sobre experiências recentes de um grupo de utilizadores." Geonovas (2015). Abstract
Figueiredo, Ondina M., Teresa Pereira Silva, João Pedro Veiga, Maria João Batista, and Daniel PS Oliveira. "X-ray absorption near-edge spectroscopy (XANES) applied to the speciation of tungsten in Panasqueira mine debris." 4th ENURS and ESRF-Day Meeting of Synchrotron Radiation Users from Portugal. 2015. Abstract
Figueiredo, Maria-Ondina, Teresa P. Silva, Joao P. Veiga, Maria-Joao Batista, Eduardo Salas-Colera, and Daniel P. de Oliveira. "Selenium Speciation in Waste Materials From an Exhausted Iberian Pyrite Belt Mine." Journal of Materials Science Research. 3.4 (2014): p22. Abstract


Sa, Sofia, Manoj B. Gawande, Alexandre Velhinho, Joao Pedro Veiga, Nenad Bundaleski, Joao Trigueiro, Alexander Tolstogouzov, Orlando M. N. D. Teodoro, Radek Zboril, Rajender S. Varma, and Paula S. Branco. "Magnetically recyclable magnetite-palladium (Nanocat-Fe-Pd) nanocatalyst for the Buchwald-Hartwig reaction." Green Chemistry. 16 (2014): 3494-3500. AbstractWebsite
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
Figueiredo, Ondina M., Teresa Pereira Silva, Daniel PS Oliveira, João Pedro Veiga, Eduardo Salas-Colera, and Maria João Batista. "Towards a sustainable recovery of valuable metals from mining residues: a XANES approach to tungsten speciation in debris from the Panasqueira mine." Current Synchrotron-based Research in Portugal 2014 (2014). Abstract