131 research outputs found
Previsione delle traiettorie di blocchi mobilizzati da frane di crollo: applicazione e confronto di modelli
Vengono trattati aspetti relativi alla previsione delle traiettorie e distanze di propagazione di blocchi mobilizzati da frane di crollo. Particolare attenzione viene posta all'applicazione e al confronto di modelli previsionali
Wi-GIM system: a new wireless sensor network (WSN) for accurate ground instability monitoring
The evolution of active Lavina di Roncovetro landslides by multi-temporal high-resolution topographic data
Monitoring the Lavina di Roncovetro (RE, Italy) landslide by integrating traditional monitoring systems and multiple high-resolution topographic datasets
Application of an ultra-wide band sensor-free wireless network for ground monitoring
Ground displacement monitoring is one of the most important aspects of early warning systems and risk management strategies when addressing phenomena such as landslides or subsidence. Several types of instrumentation already exist, but those able to provide real-time warnings on multiple time series are typically
based on expensive technology, highlighting the need to develop a low-cost, easy to install system suitable for
emergency monitoring. Therefore, a wireless network based on ultra-wideband impulse radiofrequency technology has been realized. The novelty of this network consists of its ability to measure the distance between nodes using the same signals used for transmission without the need for an actual measurement sensor. The system was tested by monitoring a mudflow in Central Italy and revealed its suitability as an early warning tool. More research on the integration of future low-cost hardware and and eventual industrialization would provide further improvement to this promising technology.Published1-142V. Struttura e sistema di alimentazione dei vulcani4V. Processi pre-eruttiviJCR Journa
Salvinia auriculata: chemical profle and biological activity against Staphylococcus aureus isolated from bovine mastitis.
The aquatic plant Salvinia auriculata has been shown to possess promising properties for the treatment of Staphylococcus aureus bovine mastitis. The disease afects cattle health and compromises dairy cattle productivity, resulting in reduced milk production and higher mortality rates. The aim of this study was to evaluate the antimicrobial activity, antibioflm activity, and toxicity of S. auriculata root extracts using bovine mammary epithelial cells (MAC-T); determine the chemical composition of the most active extract; and develop an S. auriculata antiseptic solution for pre- and post-milking teat disinfection. Plants were collected during the four seasons of the year. The most active hexane extract was subjected to bioguided fractionation, which resulted in the isolation of six known compounds, stigmast-22-ene-3,6-dione, stigmasterol, friedelinol, ?-sitosterol, octadecyl alcohol, and octadecanoic acid. The antimicrobial and antibioflm activities of the most active extract and isolated compounds were determined against nine S. aureus strains isolated from cows with mastitis. The efcacy of the S. auriculata teat dip formulation was tested using an excised teat model (ex vivo), and promising results were obtained. The S. auriculata extract formulation proved to be as efective as commercial antimicrobials in reducing log counts in excised teats
Pharmacological activity of the hydroalcoholic extract from Hovenia dulcis thunberg fruit and the flavonoid dihydromyricetin during hypercholesterolemia induced in rats
Phytopreventive antihypercholesterolmic and antilipidemic perspectives of zedoary (Curcuma Zedoaria Roscoe.) herbal tea
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