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C. Oppo S. Bellandi N. Degli Innocenti A. M. Stortini G. Loglio E. Schiavuta R. Cini 《Marine Chemistry》1999,63(3-4)
The role of surfactant organic matter in marine aerosol production has been studied under conditions in which there is a large coverage of whitecaps on the sea surface. To improve the knowledge of matter exchange and pollutant recycling from the sea surface into the atmosphere, a spray drop adsorption model (SDAM) was developed and the validity of the proposed model verified by the following experimental results: (1) an increase of surfactant matter on the sea surface during rough sea conditions (‘surface wave concentration'); (2) an (hyperbolic-like) increase of the enrichment ratio (ER) of surfactant fluorescent organic matter (SFOM), made up predominantly by humic substances (HS), as the particle size decrease; (3) a similar behaviour for elements with pollutant properties, and which are known to interact with HS and other surfactant materials, considered pollution tracers. An additional laboratory experiment, based on the adsorption model conditions, gives enrichment ratio greater than unity for K and Ca. The first results on marine aerosols trapped in marine clouds (at 1000 m above sea level and at 100 km from the coast) seem to further support the proposed model and its ability to predict the transition from saline to almost entirely organic particles for the smaller fractions of marine aerosols. The possible contribution of these particles to the recycling and to the long range transport of pollutants via marine aerosols has been considered. 相似文献
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Serena Cattari Stefania Degli Abbati Daniele Ferretti Sergio Lagomarsino Daria Ottonelli Antonio Tralli 《Bulletin of Earthquake Engineering》2014,12(5):2333-2365
The medieval fortresses are a very common and distinctive type among the Emilian historical constructions and the earthquake of May 20 and 29, 2012 highlighted their high vulnerability. Starting from the analysis of the geometrical and constructive features, the interpretation of their seismic vulnerability has been based on an accurate damage assessment and supported by the numerical results of typical configurations. An abacus of recurring seismic damage mechanisms in fortresses has been proposed: it in particular concerns the towers and their interaction with the fortress perimeter walls. Moreover, the seismic response of the most important fortresses in the epicentral area has been described referring to their historical notes, the recent interventions and their influence on the seismic damage. 相似文献
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Degli Abbati Stefania Morandi Paolo Cattari Serena Spacone Enrico 《Bulletin of Earthquake Engineering》2022,20(4):2187-2217
Bulletin of Earthquake Engineering - This paper presents the comparison of the results of modal and nonlinear analyses carried out on a 2-story masonry building with rigid diaphragms, inspired by... 相似文献
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Manzini Carlo Filippo Ottonelli Daria Degli Abbati Stefania Marano Corrado Cordasco Emilia Angela 《Bulletin of Earthquake Engineering》2022,20(4):2045-2084
Bulletin of Earthquake Engineering - The paper presents the comparison of the results of non-linear static analyses performed with different software based on the equivalent frame (EF) modelling... 相似文献
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