Browsing by Author "Pozo Antonio, José Santiago"
Now showing items 1-11 of 11
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A computer vision system for identification of granite-forming minerals based on RGB data and artificial neural networks
Ramil, Alberto; López, Ana; Pozo Antonio, José Santiago; Rivas Brea, Teresa (Elsevier, 2017-12-19)[Abstract]: Granitic stones are widely used in the field of Cultural Heritage in the north-western Iberian Peninsula. In some activities regarding conservation, such as the laser cleaning, it is of great interest the ... -
Aplicación de un láser Nd:YAG para retirar grafiti de la caliza Lioz: influencia de los parámetros láser (longitud de onda, fluencia y número de pulsos) y la composición del grafiti
Pozo Antonio, José Santiago; Antonio Fontán, Nuria (Universidade da Coruña, Servizo de Publicacións, 2021-12-31)[Resumen] En los últimos años la ablación láser como herramienta de limpieza de roca del patrimonio ha experimentado grandes avances debido a la falta de contacto mecánico entre el cabeza y la roca, a la ausencia de residuos, ... -
Development of processing strategies for 3D controlled laser ablation: Application to the cleaning of stonework surfaces
López, Ana; Lamas, Javier; Pozo Antonio, José Santiago; Rivas Brea, Teresa; Ramil, Alberto (Elsevier, 2020-03)[Abstract] Laser cleaning is an environmentally friendly method based on laser ablation processes to remove impurities or contaminants from a surface layer of a material. The configuration of a laser station in the case ... -
Dual Combination of Cleaning Methods (Scalpel, Biocide, Laser) To Enhance Lichen Removal From Granite
Pozo Antonio, José Santiago; Rivas Brea, Teresa; López de Silanes, María Eugenia; Ramil, Alberto; López, Ana (Elsevier, 2022-03)[Abstract] Three cleaning methods, namely i) a commercial biocide applied by brush with the subsequent extraction of organic remains by a rod, ii) a scalpel or iii) a Nd:YVO4 laser at 355 nm, single application as well as ... -
Enhancement of graffiti removal from heritage stone by combining laser ablation and application of a solvent mixture
Ricci, Chiara; Gambino, Francesca; Nervo, Marco; Piccirillo, Anna; Scarcella, Arianna; Zenucchini, Francesca; Ramil, Alberto; Pozo Antonio, José Santiago (Elsevier, 2020-11)[Abstract] In this study, it was evaluated the combined cleaning treatment based on laser ablation followed by the application of chemical products for removing alkyd graffiti paint from two different types of stone. Three ... -
Femtosecond Laser Texturing as a Tool to Increase the Hydrophobicity of Ornamental Stone: The Influence of Lithology and Texture
López, Ana; Pozo Antonio, José Santiago; Moreno, Alicia; Rivas Brea, Teresa; Pereira, Lola; Ramil, Alberto (Elsevier, 2022-07)[Abstract] In the field of stone conservation, a very common direct intervention seeks to increase the water repellence of objects. By limiting the interaction between the solid and the water, the possibility of alteration ... -
Influence of the weathering rate on the response of granite to nanosecond UV laser irradiation
Rivas Brea, Teresa; Pozo Antonio, José Santiago; Ramil, Alberto; López, Ana (Elsevier, 2019-12-13)[Abstract]: Laser ablation is an accepted cleaning technology for cultural heritage stonework. Optimized laser ablation may,however, have different side effects depending on the mineralogical composition of the stone. In ... -
La investigación gallega en la aplicación de la tecnología láser para la limpieza de patrimonio cultural material: estrategias del pasado y del futuro
Pozo Antonio, José Santiago; Rivas Brea, Teresa; Ramil, Alberto; López, Ana (Universidade da Coruña, Servizo de Publicacións, 2023-12-22)[Abstract] The cleaning of cultural heritage elements is essential to ensure the durability and transmission of our cultural and artistic legacy. In Galicia, the importance of our stone-built heritage reflects the skill ... -
Laser versus scalpel cleaning of crustose lichens on granite
Rivas Brea, Teresa; Pozo Antonio, José Santiago; Ramil, Alberto; López, Ana (Elsevier, 2018-02-28)[Abstract]: This paper addresses the evaluation of the cleaning of crustose lichens developing on granite. The evaluation was performed considering the effectiveness of the cleanings and harmfulness exerted on the granite. ... -
Ultrafast Laser Surface Texturing: A Sustainable Tool to Modify Wettability Properties of Marble
López, Ana; Ramil, Alberto; Pozo Antonio, José Santiago; Rivas Brea, Teresa; Pereira, Lola (MDPI, 2019-07-28)[Abstract] Conservation strategies to reduce the degradation of stone caused by the action of water are focusing on increasing the hydrophobicity of the surface by imitating existing solutions in nature (lotus leafs and ... -
Using Hyperspectral Imaging to Quantify Phototrophic Biofilms on Granite
Ramil, Alberto; Vázquez-Nion, Daniel; Pozo Antonio, José Santiago; Sanmartín, Patricia; Prieto Lamas, Beatriz (International Society for Environmental Information Sciences, 2020-03)[Abstract]: This paper reports a non-invasive method for in situ biofilm quantification based on the use of hyperspectral imaging to analyze a chromatically and texturally heterogeneous substrate as granite colonized by ...
