Trinitat Pradell
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The medieval stained glass in Catalonia: Girona cathedral Open
The production and distribution of stained glass in Mediterranean Europe during the Middle Ages remains inadequately understood. This article focuses on Catalonia, where local glass production is documented as early as the 13th century, bu…
Non-Destructive Ellipsometric Analysis of the Refractive Index of Historical Enamels Open
The refractive index is an important parameter for the restoration of historical cultural heritage and for non-destructive optical techniques. In this study, different mathematical models for lead glasses were assessed in order to analyze …
Determination of Boron Content in Surface Paintings From Historical Stained‐Glass Windows Open
Stained‐glass windows are often painted with grisailles and enamels. These glassy materials have a low melting temperature and are fixed to the base glass by firing processes. Lead and/or boron are commonly added to the painting material t…
The ‘Dame de Sabra’: New insights into the glaze technology of the Fatimids in Ifriqiya (10th century, Tunisia) Open
[EN] The analysis of Fatimid polychrome white-opaque glazed ware found at the archaeological sites of Bir Ftouha and Utica (Ifriqiya) revealed that, contrary prevailing belief, the glazes were successfully opacified with quartz rather than…
Changsha ware glaze color: Composition, nanostructure, and copper and iron speciation Open
The opacity/transparency, color, and production of designs in Changsha ware, a Tang dynasty Chinese stoneware renowned for its polychromy and pioneering high‐temperature red glaze, are studied by analyzing the composition, micro/nanostruct…
The role of sulphur in the early production of copper red stained glass Open
Little is known about the production of ruby red copper stained glasses from the Medieval and Renaissance periods apart from the fact that the colour is due to the presence of small metallic copper nanoparticles and that tin, the most comm…
Continuity and innovation in glazed tableware consumption in North Africa from the Fatimid to Zirid periods Open
Excavations in the former Roman port of Utica (North Tunisia) by the University of Oxford and the INP (Tunisie) have revealed an area of medieval Islamic houses in the area of the Roman forum. Stratified sequences of pottery have establish…
Technological changes in the glazed wares of northern Tunisia in the transition from Fatimid to Zirid rule Open
A representative selection of glazed ceramics recovered from medieval Islamic contexts excavated in the former Roman port of Utica (North Tunisia) has revealed new data about medieval glaze technologies in the central Mediterranean. Strati…
Manganese crystalline phases developed in high lead glazes during firing Open
A High Temperature Synchrotron Radiation X-Ray Powder Diffraction experiment was performed to determine the manganese compounds formed during the heating and cooling of 70 wt% PbO - 30 wt% SiO2 mixture or the equivalent glass plus 10 wt% o…
Jun ware glaze colours: An X-ray absorption spectroscopy study Open
Jun ware is stoneware created in the late Northern Song dynasty (12th century) with a blue glaze combining transparent-blue and whitish-opaque submillimetric areas. The glaze has a glass nanostructure with lime-rich droplets in a silica-ri…
From Glass to Glaze in al-Andalus: Local Invention and Technological Transfer Open
It has long been assumed that lead glazing technology preceded glassmaking in the Western world and that the technological transfer was from glazes to glass. Here, we present new evidence for the reverse, the indigenous innovation of glass…
Experimental study of historical processing of cobalt arsenide ore for colouring glazes (15-16th century Europe) Open
Cobalt was used since the early antiquity to tinge glass and glazes in blue. The presence of arsenic in blue decorated glazes since ~1500 onwards and absence beforehand, observed in Europe, might be related to the processing of the ore: ro…
The introduction of the glaze in al-Andalus: Technological waves and Oriental influences — ERRATUM Open
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The introduction of the glaze in al-Andalus: Technological waves and Oriental influences Open
This research develops a much-needed approach to the study of glazed ware production in al-Andalus (Muslim Spain and Portugal) during the early Middle Ages. The introduction of glaze to the Iberian Peninsula was a long and complex process …