1,721,201 research outputs found
Valutazione policentrica di attività e tollerabilità del nuovo antimicotico:ciclopiroxolamina
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Structural health monitoring of a road tunnel intersecting a large and active landslide
Full text linkDealing with engineering structures that are not easily replaceable requires frequent assessment of the damage state of the construction in order to estimate its durability and reliability. The procedures that allow damage to be detected and identified are broadly defined as Structural Health Monitoring (SHM). In this work, a SHM network has been deployed in a road tunnel that intersects a massive landslide, whose movements are causing the formation of cracks along the tunnel lining. The monitoring system measures in real time the displacements across major cracks and the rotation of the tunnel segments; data are gathered and made easily accessible through a web-based platform. The mechanisms by which the tunnel deforms under the landslide-induced stress have been defined through the analysis of three years of monitoring data. The factors triggering an increase in deformation rates and causing damage to the structure have also been investigated. This evidence will support the design of mitigation works to extend the life-span of the tunnel
Web-Based Platforms for Landslide Risk Mitigation: The State of the Art
Full text linkWeb-based platforms (WBPs) are online spaces where the user can interrogate and analyze data series gathered in quasi-real time from monitoring network/s. These online tools are increasingly used by government agencies, local authorities, contractors, and researchers for visualization, management, control, and analysis of monitoring data. In the risk mitigation framework, WBPs must incorporate specific tools and functions to be integral to non-structural mitigation activities. This is particularly important for the mitigation of landslide-related hazards, that sometimes are challenging to address with structural solutions. The state-of-the-art paper considers the evolution of WBPs for risk mitigation from a pioneering research topic of a decade ago to the current applications that are sometimes comprised within commercial packages. First, we describe what nowadays represents the WBP requirements regarding usability and data visualization for proper data communication. Next, tools for data management and solution regarding interoperability and data analysis are discussed. Lastly, considerations on data filtering in the context of alert and alarm triggering are presented. To be a reasonable alternative to structural mitigation works, non-structural solutions such as monitoring for alarm triggering or early warning must be dependable and stable. We have synthesized the fundamental requirements of monitoring networks devoted to risk mitigation with the expression "5 Rs": robustness, redundancy, reliability, resilience, and responsiveness
Ruthenium and osmium complexes for the transfer hydrogenation, hydrogenation and dehydrogenation network
No full textData fusion for dissemination: Web applications for the visualization of monitoring data
No full textA monitoring system with an integrated web platform that has been installed to control the deformations of a road tunnel that intersects a block slide is presented. The system has been implemented in order to be redundant, scalable and providing the possibility to integrate different types of sensors. In fact, due to the importance of the monitored infrastructure the system needed to be extremely robust and reliable. The web platform has been designed focusing on the usability that is the ease of use and learnability. In fact, when monitoring a landslide or a structure, displacements are one of the main measured quantities. However, collected data are usually difficult to communicate with the classic displacements vs time graphs to local authorities and to the public. An automatically generated heat maps is available on the platform and the fact that the most active areas are identified with a reddish color while lesser movements are indicated in yellow uses a well-known communication code that helps understanding the dynamic of the process in a more intuitive way. On the other hand the possibility to have a single image available on the web to every person involved in the project helps the dissemination of results and confrontation creating an accessible common ground in the emergency phase
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