17 documents found, page 1 of 2
Patinas on silverwork: Analytical approach for distinguishing intentionally and...
Landeiro, Daniela; Barreiros, Maria Alexandra; Manso, M.ABSTRACT: The patination of silverwork to modify surface color and finish became increasingly popular in 19th-century Europe, particularly among renowned artists such as René Lalique (1860-1945), Henri Vever (1854–1942), and Georges Fouquet (1862–1957). This decorative technique is typically achieved using sulfur-based solutions, resulting in blackish or bluish silver sulfide patinas¹. Patinated silver surfaces...
High-density Seismic Network for Monitoring Alentejo Region (Portugal) and Miti...
Manso, M.; Bezzeghoud, M.; Borges, J. F.; Caldeira, B.; Fontiela, J.; Ayadi, A.The seismic sensor network Alentejo (SSN-Alentejo) developed by the Earth Sciences Institute (Instituto de Ciências da Terra, University of Évora) brings the largest high-density seismic sensor network ever deployed in Portugal. This novel network aims to improve the characterization of seismic activity in the region, through a high-resolution mapping of seismic clusters and known faults. Over the next two year...
On-site Sensor Noise Evaluation and Detectability in Low Cost Accelerometers
Manso, M.; Bezzeghoud, M.Seismic networks help understanding the phenomena related with seismic events. These networks are employing low-cost accelerometers in order to achieve high-density deployments enabling accurate characterisation (high resolution) of strong earthquake motion and early warning capabilities. In order to assess the applicability of low-cost accelerometers in seismology, it is essential to evaluate their noise chara...
Monitoring the Earth: the Near-Future Developments in Seismology
Bezzeghoud, M.; Manso, M.Seismology deals with the study of the activity of physical forces responsible for the origin of earthquakes and the seismic waves generated within the Earth. All structures located from the center of the Earth to its surface are the subject of study in this discipline. Seismology therefore pursues the understanding of the Earth’s internal structure and the physical processes that cause earthquakes, resorting t...
On-site Sensor Noise Evaluation and Detectability in Low Cost Accelerometers
Manso, M.; Bezzeghoud, M.Seismic networks help understanding the phenomena related with seismic events. These networks are employing low-cost accelerometers in order to achieve high-density deployments enabling accurate characterisation (high resolution) of strong earthquake motion and early warning capabilities. In order to assess the applicability of low-cost accelerometers in seismology, it is essential to evaluate their noise chara...
A multi-analytical approach to gold in Ancient Egypt: studies on provenance and...
Tissot, Isabel; Troalen, L. G.; Manso, M.; Ponting, M.; Radtke, U.; Barreiros, M. Alexandra; Shaw, I.; Carvalho, M. L.; Guerra, M. F.Recent results from a three-year multi-disciplinary project on Ancient Egyptian gold jewellery revealed that items of jewellery from the Middle Kingdom to the New Kingdom were manufactured using a variety of alluvial gold alloys. These alloys cover a wide range of colours and the majority contain Platinum Group Elements inclusions. However, in all the gold foils analysed, these inclusions were found to be absen...
Alloy characterization of a 7th Century BC archeological bronze vase — Overcomi...
Manso, M.; Schiavon, N.; Queralt, I.; Arruda, Ana Margarida; Sampaio, J.M.; Brunetti, A.In this work we evaluate the composition of a bronze alloy using X-ray fluorescence spectrometry (XRF) and Monte Carlo (MC) simulations. For this purpose, a 7th Century BC archeological vase from the SW Iberian Peninsula, displaying a well formed corrosion patina was analyzed by means of a portable X-ray fluorescence spectrometer. Realistic MC simulations of the experimental setup were performed with the XRMC c...
The earrings of Pancas treasure: Analytical study by X-ray based techniques – A...
Tissot, Isabel; Tissot, M.; Manso, M.; Alves, L. C.; Barreiros, M. Alexandra; Marcelo, Teresa; Carvalho, M. L.; Corregidor, V.; Guerra, M. F.The development of new metallurgical technologies in the Iberian Peninsula during the Iron Age is well represented by the 10 gold earrings from the treasure of Pancas. This work presents a first approach to the analytical study of these earrings and contributes to the construction of a typological evolution of the Iberian earrings. The manufacture techniques and the alloys composition were studied with three co...
Micro-XRF for characterization of Moroccan glazed ceramics and Portuguese tiles
Guilherme, A.; Manso, M.; Pessanha, S.; Zegzouti, A.; Elaatmani, M.; Bendaoud, R.; Coroado, J.; Santos, J. M. F. dos; Carvalho, M. L.
The earrings of Pancas treasure: Analytical study by X-ray based techniques – A...
Tissot, Isabel; Tissot, M.; Manso, M.; Alves, L. C.; Barreiros, M. Alexandra; Marcelo, Teresa; Carvalho, M. L.; Corregidor, V.; Guerra, M. F.The development of new metallurgical technologies in the Iberian Peninsula during the Iron Age is well represented by the 10 gold earrings from the treasure of Pancas. This work presents a first approach to the analytical study of these earrings and contributes to the construction of a typological evolution of the Iberian earrings. The manufacture techniques and the alloys composition were studied with three co...