Search results for "event"

XX Colloquio AISCOM

2015

In questi ultimi decenni la ricerca scientifica ha fornito numerose innovazioni applicabili nel campo della conservazione e del restauro dei beni culturali e, come presentato nel congresso internazionale Molecular Biology and Cultural Heritage (Seville-2003, ES), le biotecnologie possono fornire numerosi protocolli applicativi. In particolare, le indagini molecolari implementano e completano la rivelazione e identificazione delle specie microbiche presenti sia sulla superficie dei manufatti sia nell’aerosol dogli ambienti in cui sono conservati/esposti. Alcune specie batteriche e fungine, sono in grado di rilasciare sui manufatti e nell’ambiente circostante, i prodotti delle loro attività m…

Bioaerosol

2022

Cultural heritage constitutive materials can provide excellent substrates for microbial colonisation, highly influenced by thermo-hygrometric parameters. In cultural heritage-related environments, a detrimental microbial load may be present both on artworks surface and in the aerosol. Confined environments (museums, archives, deposits, caves, hypogea) are characterised by peculiarstructures and different thermo-hygrometric conditions, influencing the development of a wide range of microbial species, able to induce artefact biodeterioration and to release biological particles in the aerosol (spores, cellular debrides, toxins, allergens) potentially dangerous for the human health (visitors/us…

Bioarosol

2022

Cultural heritage constitutive materials can provide excellent substrates for microbial colonisation, highly influenced by thermo-hygrometric parameters. In cultural heritage-related environments, a detrimental microbial load may be present both on artworks surface and in the aerosol. Confined environments (museums, archives, deposits, caves, hypogea) are characterised by peculiar structures and different thermo-hygrometric conditions, influencing the development of a wide range of microbial species, able to induce artefact biodeterioration and to release biological particles in the aerosol (spores, cellular debrides, toxins, allergens) potentially dangerous for the human health (visitors/u…

BIOAEROSOL IN INDOOR ENVIRONMENTS FOR CONSERVATION OF CULTURAL HERITAGE: POTENTIAL RISKS FOR HISTORICAL-ARTISTIC MANIFACTS ANO HUMAN HEALTH

2014

An integrated approach was applied for the characterization of the biological airborne particulate in four Sicilian sites with peculiar structure, thermo-hygrometric and lighting parameters. We focalized the attention on: ,) Crypt in the Cathedral Treasury Museum (Palermo), an underground environment (lithic and stone artifact), daily visited by tourist and characterized by a reduced indoor-outdoor exchange; it) the Saints Cave in Licodia Eubea (Catania), a semi-confined environment (fresco), strongly influenced by the surrounding countryside and by a continuous airflow; iit) the Diocesan Historic Archive in Palermo, (documentary funds, IX-XXsec.), characterized by low air change rate and r…

Analysis of microbial colonization

2012

CONTENT OF THE BOOK The book takes into consideration archaeological artefacts made out of the most common materials, like stones (both natural and artificial), mosaics, ceramics, glass, metals, wood and textiles. But all these important materials are accompanied by less diffuse artefacts and materials, like clay tablets, goldsmith artefacts, icons, leather and skin objects, bones and ivory, coral and mother of pearl. Each type of artefact and/or material is treated from at least four different points of view: - Composition and processing technology - Alteration and degradation causes and mechanisms - Procedures for conservative intervention - Case study and/or examples of conservative inte…

AN ANALYSIS OF SURFACE ACTIVITY OF BEACH RESIDENT INVERTEBRATE COMMUNITY DURING STORM EVENTS

2022

Increasing storminess is among the expected effects of climate change; systems such as sandy beaches –and especially those on islands- are particularly exposed to these events. Data related to behavioural reactions of resident beach fauna to storms could hence provide useful insights for the study of beaches’ resilience. A study was carried out on two beach units on the NE coast of Crete island (Greece), seasonally subjected to violent storms. Daily surface activity of resident fauna was analysed through temporal replicates (four different moon phases) during the months of March and April 2016. Pitfalls were placed along transects perpendicular to the shoreline and emptied every three hours…

Study of the effects of climate extremes on functioning of intertidal assemblages to design an early warning sensor network

2020

Correlation between extinction pattern and δ13C fluctuations across the Triassic Jurassic boundary in shallow water settings: a proxy for the present…

2018

With the aim to assess the possible influence of the carbon variations on the benthic communities across the Triassic Jurassic boundary we have carried out sedimentological, biostratigraphic and stable isotope studies on an about 220 m thick peritidal section cropping out in Northwestern Sicily. The subtidal facies of the lower and middle part of this succession show the common occurrence of large and thick megalodontids and a benthic foraminiferal assemblage with Triasina hantkeni and Aulotuortids that supports a Rhaetian age. In the lower part of the succession, a significative biotic perturbation is evidenced by a sudden reduction of the size, shell thickness and abundance of the large m…

The geo-hydrologic event in the Peloritan – Ionian area of 2009: debris-flow susceptibility assessment by means of forward logistic regression

2012

On the 1st of October 2009, the area centred on the village of Giampilieri (Messina), on the Ionian side of the Peloritan belt, suffered thousands of landslides activated in the time lapse of about five hours, which caused 36 victims, more than 100 injured and more than 0.5M€ of damage to structures. This unprecedented phenomenon was triggered by an exceptional meteorological event, recorded at the foothills with 250mm of rain in just 8 hours; this amount of rainfall was cumulated to two previous events (16/IX: 75mm; 23/IX: 190mm) for a total amount of more than 500mm in less than two weeks. Due to the peculiar triggering conditions a huge number of debris flows involved the shallow weather…

Procesos hidrotermales con enriquecimiento en REE en las carbonatitas de Fuerteventura: evidencias en minerales accesorios

2021

Carbonatitic dykes that crop out in the central western part of Fuerteventura Basal Complex (Ajuy, Punta de la Nao), were affected by the Miocene intrusive event responsible for contact metamorphism and partial melting of part of the alkaline-carbonatitic complex. Textural characteristics, monazite enriched in LREE (La, Ce, Nd) formation processes in microfractures that affect zircon crystals, show carbonatite interactions with hydrothermal fluids and partial REE remobilization. Pyrochlore is the main mineral carrier of rare earth elements (sum REE=216694 ppm), with high LREE (LaN=185816 and CeN=165209) with respect to HREE (YbN=2589 and LuN=1814) with a rather steep pattern (La/Yb)N=72 in …