Search results for " fire"
showing 10 items of 92 documents
Impact of Land Cover Change Induced by a Fire Event on the Surface Energy Fluxes Derived from Remote Sensing
2015
Forest fires affect the natural cycle of the vegetation, and the structure and functioning of ecosystems. As a consequence of defoliation and vegetation mortality, surface energy flux patterns can suffer variations. Remote sensing techniques together with surface energy balance modeling offer the opportunity to explore these changes. In this paper we focus on a Mediterranean forest ecosystem. A fire event occurred in 2001 in Almodovar del Pinar (Spain) affecting a pine and shrub area. A two-source energy balance approach was applied to a set of Landsat 5-TM and Landsat 7-EMT+ images to estimate the surface fluxes in the area. Three post-fire periods were analyzed, six, seven, nine, and 11 y…
The Role of Fire in Achieving the Sustainable Development Goals of the United Nations
2019
The Sustainable Development Goals (SDGs) of the United Nations do not mention Fire as a key factor in achieving an environmentally-friendly human society. This paper reviews the key aspects of the impact of fire that make it necessary to update the SDGs. Upon reviewing the scientific literature, it was found that fire has been part of the Earth System for the last 400 million years, and that it is part of biogeochemical cycles. From a geological perspective, fire shaped the current Earth System. Humans have used fire in the last million years as hunter-gatherers, and the last Pleistocene period evolved with the presence of fire. Since the Neolithic revolution, humankind spread the use of fi…
Discovery and validation of small-molecule heat-shock protein 90 inhibitors through multimodality molecular imaging in living subjects.
2012
Up-regulation of the folding machinery of the heat-shock protein 90 (Hsp90) chaperone protein is crucial for cancer progression. The two Hsp90 isoforms (α and β) play different roles in response to chemotherapy. To identify isoform-selective inhibitors of Hsp90(α/β)/cochaperone p23 interactions, we developed a dual-luciferase (Renilla and Firefly) reporter system for high-throughput screening (HTS) and monitoring the efficacy of Hsp90 inhibitors in cell culture and live mice. HTS of a 30,176 small-molecule chemical library in cell culture identified a compound, N -(5-methylisoxazol-3-yl)-2-[4-(thiophen-2-yl)-6-(trifluoromethyl)pyrimidin-2-ylthio]acetamide (CP9), that binds to Hsp90(α/β) an…
Soil and organic carbon redistribution in a recently burned Mediterranean hillslope affected by water erosion processes
2022
Forest fires cause many changes in the physical, chemical and biological soil properties such as aggregation and soil organic carbon contents (SOC) as well as on soil hydrology and erosion processes. Most studies on post-fire soil erosion in Mediterranean environments have been plot-based and research at hillslope or broader scale is scarce. Understanding SOC nature, distribution and modifications, as produced by forest fires and erosion, has become crucial to model and define the role of soil erosion as source or sink of C, and to sustainably manage ecosystem services related to the soil resource. This research provides data about the loss and redistribution of soil and SOC in a Mediterran…
Introduzione
2019
1. Preambolo La bombola del gas sembra vuota, le manopole della cucina sono, in aggiunta e in definitiva cessazione di ogni speranza di avere fuoco, ossidate e inutilizzabili. I ragazzi mi guardano preoccupati, attoniti: la festa campestre, tanto agognata, pare essere irrimediabilmente perduta. Ma siamo al Mulino, l’antica residenza rurale dove ho trascorso lunghe estati con unici compagni di giochi mio fratello, ramarri e lucertole, grilli e cicale, scursuna e granchi di fiume. E al Mulino i...
Spatio-temporal Vegetation Recuperation after a Grassland Fire in Lithuania
2013
The aim of this work is to study the spatio-temporal effects of a grassland fire in Lithuania. Immediately after the fire, a experimental plot was designed in a east-faced slope. Vegetation cover and height were measured 10, 17, 31 and 46 days after the fire (vegetation cover was only measured until 31 days after the fire because in the last measurement campaign the plot was completely covered). The results showed that vegetation recovered very fast. Ten days after the fire vegetation cover and height distribution were heterogeneous, decreasing with the time due to vegetation spread. Vegetation recovered was specially observed between 17 and 31 days after the fire due vegetation recuperatio…
Mulching practices for reducing soil water erosion: A review
2016
Abstract Among the soil conservation practices that are used, mulching has been successfully applied to reduce soil and water losses in different contexts, such as agricultural lands, fire-affected areas, rangelands and anthropic sites. In these contexts, soil erosion by water is a serious problem, especially in semi-arid and semi-humid areas of the world. Although the beneficial effects of mulching are known, further research is needed to quantify them, especially in areas where soil erosion by water represents a severe threat. In the literature, there are still some uncertainties about how to maximize the effectiveness of mulching to reduce the soil and water loss rates. Given the serious…
Magmatic gas percolation through the old lava dome of El Misti volcano
2017
International audience; The proximity of the major city of Arequipa to El Misti has focused attention on the hazards posed by the active volcano. Since its last major eruption in the fifteenth century, El Misti has experienced a series of modest phreatic eruptions and fluctuating fumarolic activity. Here, we present the first measurements of the compositions of gas emitted from the lava dome in the summit crater. The gas composition is found to be fairly dry with a H2O/SO2 molar ratio of 32 ± 3, a CO2/SO2 molar ratio of 2.7 ± 0.2, a H2S/SO2 molar ratio of 0.23 ± 0.02 and a H2/SO2 molar ratio of 0.012 ± 0.002. This magmatic gas signature with minimal evidence of hydrothermal or wall rock int…
Twin Peaks: Fire Walk With Me (1992) and David Lynch's Aesthetics of Frustration
2010
This article focuses on Twin Peaks: Fire Walk With Me (David Lynch,1992), the prequel to the TV series produced by Mark Frost and David Lynch (1990-1991), which represents a turning point in Lynch's filmography. The author argues that the film's aesthetics frustrate viewer expectations, and especially the fan of the TV series, by addressing the issue of the film's relation to the TV series. Special attention is payed to the aesthetics of time passing and to the accumulation of unusual signs in the first part of the film, with reference to Deleuze and Michel Guiomar, and the way they lead the spectator, fan or neophyte, to expect something Fantastic to happen. The article then addresses the …
Zdzisław Filingier
2017
Pułkownik Zdzisław Filingier to postać wybitnie zasłużona dla pożarnictwa zarówno na Opolszczyźnie, jak i w całej Polsce. Pułkownik Filingier urodził się 2 stycznia 1922 roku w Warszawie. Jego rodzina mieszkała w Międzylesiu. Tam Zdzisław Filingier spędził dzieciństwo i wczesne lata młodzieńcze. W latach 1935–1939 uczęszczał do gimnazjum w Warszawie, gdzie należał do harcerstwa. W czasie pierwszych miesięcy okupacji skończył tajną podchorążówkę Armii Krajowej oraz brał udział w wielu akcjach sabotażowych. Wstąpił do oddziału 25. pułku piechoty Armii Krajowej Ziemi Piotrkowskiej, działającego na Kielecczyźnie i w Górach Świętokrzyskich. Pod pseudonimem partyzanckim „Roszak” został dowódcą pl…