Environmental, climatic, and atmospheric factors threaten the integrity of stone monuments, causing different forms and degrees of deterioration (stone weathering), both in the internal structure of the building stones and on the surface. Due to the complexity of this process, the accurate definition of the origins, types, levels of weathering and their classification is needed, to prevent erroneous intervention in conservation practices. Different classifications have been proposed during the years, traditionally starting from visual examination and then applying more quantitative approaches, expecially based on NDT.
The paper Determining the weathering classification of stone cultural heritage via the analytic hierarchy process and fuzzy inference system, by Mehmet Ergün Hatır, published on the Journal of Cultural Heritage, Volume 44, 2020, Pages 120-134, https://doi.org/10.1016/j.culher.2020.02.011 makes a step forward, defining an integrated weathering classification (IWC) to identify the levels of weathering, by combining two different weathering classifications, produced with visual analysis and P-wave velocity data.
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The electric micro-generation is gaining an increasing interest in the last years both for off-grid systems and for energy harvesting applications. In particular, starting from our skills and expertise in the field of microcombustion, the interest is now moving towards the development of co-generative and energy recovery systems based on Peltier cells.
Alloy design method which consists of theoretical analysis and experimental examination has been /is applied to develop three class of alloy systems, i.e. new Pb-free solders, alloy catalysts and biomedical alloys by using nanoparticles (NPs).
The activity is focused on the interfacial properties of complex systems in presence of surfactants and solid micro-nanoparticles.