Search results for " Fire"
showing 10 items of 92 documents
Fire safety investigation for road tunnel ventilation systems – An overview
2014
Abstract In recent years, research activities about fire events in tunnel have received a significant impulse, especially after several accidents. The Computational Fluid Dynamic (CFD) has a fundamental role about. Researchers have spent resources on various topics involving numerical tools as the performance of a ventilation system, the influence of this on the air flow motion in the tunnel or the methods for fire schematization, fire-induced smoke characterization, turbulence models, etc. One of the main phenomena to consider for the safety when a fire occurs in a tunnel is the possibility of the fire-induced smoke to rise the tunnel (backlayering). A well-designed ventilation system shal…
Warehouse threats and loss prevention management in case of fire
2016
Abstract Warehouses play an important role when it comes to the reception, delivery and storage of various types of goods. Due to the complex scenarios that may occur, as well as the heterogeneous nature of goods, warehouses bear a higher risk of accidents. Regardless if we’re taking about removing hassle or standardizing operations we speak the same language: insuring efficiency and increased efficiency leads to smart cost maintenances. In the article hear by we will observe the behavior of different warehouse materials in the case of trigger fired. Starting from the results obtained during the low scale tests and completing the premises with the large scale experiment (warehouse scale), w…
Soil biogeochemistry and microbial community dynamics in Pinus pinaster Ait. forests subjected to increased fire frequency.
2022
Fire frequency might increase in many fire-dominated ecosystems of the world due to the combined effects of global warming, land-use change and increased human pressures. Understanding how changes in fire frequency can affect the main soil biogeochemical dynamics, as well as the microbial community, in the long term is utmost important. Here we determined the effect of changes in fire frequency and other fire history characteristics on soil C and N dynamics and the main microbial groups (using soil fatty acid profiles), in Pinus pinaster forests from central Spain. Stands were chosen to differ in the number of fires (1 to 3) occurred between 1976 and 2018, in the time elapsed since the last…
Development of a Model to Estimate the Risk of Emission of Greenhouse Gases from Forest Fires
2022
27 Pág.
Forest fires in the Portuguese northwest
2011
Fundação para a Ciência e a Tecnologia (FCT)
iOS tērzēšanas lietojumprogramma
2017
Kvalifikācijas darba mērķis ir izstrādāt lietojumprogrammu, kas darbotos uz mobīlajām ierīcēm ar iOS operetājsistēmu. Lietojumprogrammas uzdevums ir dot cilvēku grupai iespēju reģistrēties dotajā lietojumprogrammā un dot iespēju izveidot dažādas terzēšanas istabas, lai katrā varētu apspriest izvēlētas tēmas. Atsevišķas terzēšanas istabas dot iespēju sakartot visas tēmas apspriešanai dažādās vietās, lai lietotājiem nevajadzētu ilgi meklēt visu īzziņu sarakstā, kur tieši bija apspriestas noteiktās tēmas. Tāpēc dota lietojumprogramma ne tikai organizē apspriešanas tēmas, bet ari taupa lietotāju laiku.
Tunnel fire active protection: improving ventilation system
2019
Abstract The main aim of this work is to evaluate how the use of an active protection method, consisting in an improved forced longitudinal ventilation system, can determine a positive impact on heat extraction and people evacuation time in a tunnel fire scenario, by considering a case study which simulations are based on a real gallery.
Hollywood y la Guerra Civil española: análisis de sus tres únicas cintas de ficción coetáneas (1937-1938) = Hollywood and the Spanish Civil War: anal…
2017
<p>El presente artículo propone un análisis comparativo de las tres únicas películas realizadas por Hollywood sobre la Guerra Civil española mientras esta se desarrollaba: <em>The Last Train From Madrid</em> (James Hogan, 1937), <em>Love Under Fire</em> (George Marshall, 1937) y <em>Blockade</em> (William Dieterle, 1938). A la postre, se demostrará que, en contra de lo afirmado por buena parte de la historiografía, las tres –y no únicamente <em>Blockade</em>– efectúan una denuncia de la intervención de las potencias del Eje en la Guerra Civil española.</p><p>The purpose of this article is to provide a comparative analysis of …
Volcanic gas emissions and degassing dynamics at Ubinas and Sabancaya volcanoes; implications for the volatile budget of the central volcanic zone
2017
Abstract Emission of volcanic gas is thought to be the dominant process by which volatiles transit from the deep earth to the atmosphere. Volcanic gas emissions, remain poorly constrained, and volcanoes of Peru are entirely absent from the current global dataset. In Peru, Sabancaya and Ubinas volcanoes are by far the largest sources of volcanic gas. Here, we report the first measurements of the compositions and fluxes of volcanic gases emitted from these volcanoes. The measurements were acquired in November 2015. We determined an average SO 2 flux of 15.3 ± 2.3 kg s − 1 (1325-ton day − 1 ) at Sabancaya and of 11.4 ± 3.9 kg s − 1 (988-ton day − 1 ) at Ubinas using scanning ultraviolet spectr…
Naive Bayes classier-based fire detection using smartphone sensors
2014
Masteroppgave i Informasjons- og kommunikasjonsteknologi IKT590 Universitetet i Agder 2014 For many years, smoke detectors have been used as the most crucial _re detection sensors.Although smoke detectors do their job very well, they are not perfect and may causefalse or late alarms. This is because they only rely on one of the _re signs which is smoke.Fire has many other signs as well such as heat and light. It also a_ects its environmentalparameters such as temperature and humidity. But typically, buildings are not equippedwith sensors capable of sensing these changes. Recently, a few smartphone manufacturershave added temperature, humidity, and barometer sensors to their products which c…