http://hdl.handle.net/10174/14473 Wed, 17 Jun 2026 13:08:08 GMT 2026-06-17T13:08:08Z http://hdl.handle.net/10174/42201 Title: Unveiling the maniz. cod. 99: A microscopic and spectroscopic investigation of its writing inks Authors: Nunes, Margarida; Corregidor, Victoria; Cerqueira Alves, Luís; J.C. SIlva, Bruno; Waerenborgh, João Carlos; G. Mitchell, Scott; Claro, Ana; Ferreira, Teresa Abstract: The Orthographia Pratica de Varias Letras is a unique 17th-century Portuguese codex, notable for its exceptional significance in the history of Latin calligraphy during the Modern period. Unfortunately, it faces complex conservation challenges due to the presence of iron gall ink (IGI). This work aimed to thoroughly characterise the inks and their impact on the manuscript using an integrated analytical approach. Extensive micro-XRF analysis revealed two distinct groups of IGIs based on their transition metal content. Zn-rich IGIs were found in half of the manuscript, suggesting the use of Zn-bearing green vitriol. In contrast, a more refined form of green vitriol was identified in the IGIs on the other half, suggesting that different types of vitriol were used. Variations in the binder-to-vitriol ratios were proposed, indicating distinct IGI formulations throughout the codex. The poor condition observed in some folios was primarily associated with greater ink coverage per surface area and lower binder content. FIB-SEM and PIXE analysis provided insights into the behaviour of Fe within the cellulose structure, including penetration and lateral migration. The IGI chromophore was further investigated by Mössbauer and XPS, which confirmed an Fe(III)-polyphenol mono-complex with a catecholate binding mode and Fe(III) in an octahedral arrangement. Thu, 11 Jun 2026 23:00:00 GMT http://hdl.handle.net/10174/42201 2026-06-11T23:00:00Z http://hdl.handle.net/10174/42177 Title: From the quarry to the H-BIM for telling the story of Romanesque church of São João de Calvos (Portugal) Authors: Sitzia, Fabio; Brandao, Filipe; Bernardes, Paulo; Pires, Vera; Figueireido, Bruno; Mirao, Josè; Blanco-Rotea, Rebeca; Ribeiro, Jorge Abstract: Romanesque churches are among the most significant elements of Portuguese heritage, due to their architectural and technical-constructive quality and the stonework. The regions of Minho and Douro have the highest concentration of examples. The use of Heritage Building Information Modelling (HBIM) tools now facilitates their protection, conservation, and promotion. This study presents the Romanesque church of S. João de Calvos (Guimarães, Portugal), which contains a wealth of architectural, historical, and technical-scientific information, recovered using different analysis tools applied to the study of its architecture and construction materials. A complete set of archaeological and physicochemical data on the materials was integrated into a Heritage Building Information Modelling model capable of managing geometric and non-geometric information. This is a pilot study for future initiatives, such as the “Route of the Romanesque” (Rota do Românico), incorporating the information into a municipal Heritage Building Information Modelling database for different purposes. Sun, 31 Aug 2025 23:00:00 GMT http://hdl.handle.net/10174/42177 2025-08-31T23:00:00Z http://hdl.handle.net/10174/42176 Title: Natural stones in construction: Global issues and practical strategies Authors: LIsci, Carla; Sitzia, Fabio; Mirao, Josè Abstract: Natural stones in construction: why does It matters? •Functionality, longevity,aesthetic, and economic value Global issues: ➢ Environmental exposure ➢ Poor material selection according to the destination use ➢ Reduction of thickness sand non-functional geometries ➢ Design & installation flaws Sat, 31 May 2025 23:00:00 GMT http://hdl.handle.net/10174/42176 2025-05-31T23:00:00Z http://hdl.handle.net/10174/42175 Title: Digitalization of quarrying process and environmental parameters Authors: Dessena, Antonio; Careddu, Nicola; Sitzia, Fabio; Pandolfi, Orlando; Pia, Luca; Santoro, Nicola Abstract: Marble quarries are important challenges for mining engineers and quarry workers The stone quarry is a complex and interconnected system. The main challenges concern the study of the deposit, the stability and monitoring of quarry faces, safety management, environmental management, production management, the analysis of the territorial context, and market research. Sat, 31 May 2025 23:00:00 GMT http://hdl.handle.net/10174/42175 2025-05-31T23:00:00Z