Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 108 for “"fire suppression"”.
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Autonomous Fire Suppression Using Feedback Control for Robotic Firefighting
… are being considered as a support tool is in firefighting operations to reduce the number of firefighter injuries and deaths. One such application is to increase firefighting performance through localized fire suppression. This research focused on developing an autonomous suppression system …
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The use of flying-squads in the operation of municipal fire suppression activities
… with the use of "Flying squads" in municipal fire departments. Specifically, the research effort involves development of a mathematical model and solution procedure for the optimum use of flying squads as manpower transport vehicles. The exact problem considered in this thesis is that of …
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Feasibility and design of blast mitigation systems for naval applications using water mist fire suppression systems
… mist systems to replace the legacy HALON- 1301 fire suppression systems warrants further study into other applications of the water mist systems. Preliminary research and investigation indicates that fine mists (20-25 pm droplet size) may reduce peak overpressures of a shock wave traveling …
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Synthesis and Characterization of Wholly Aromatic, Water-Soluble Polyimides and Poly(amic acid)s Towards Fire Suppression Foams
… One recent interest concerns the innovation of fire suppression foams. Aqueous film-forming foams (AFFFs) are regularly sought when engaging liquid fuel (gasoline, jet fuel) fires. AFFFs utilize perfluorinated compounds (PFCs) like perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid …
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The Effects of Climate Change and Long-term Fire Suppression on Ephemeral Pond Communities in the Southeastern United States
… has destroyed or isolated many wetlands and fire suppression has altered vegetation in others. My goals were to identify how wetland hydroperiods have changed through time and to examine the effects of long-term fire suppression on aquatic communities, including Reticulated Flatwoods …
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The Historic Fire Return Interval and the Ecological Effects of Fire Suppression on Montane Longleaf Pine Dominated Ecosystems in Northwestern Georgia.
… These declines were primarily caused by federal fire suppression policies implemented in the 1920’s, in combination with resource harvesting and land use conversion. In an absence of fire, tree species composition of frequently burned xeric ecosystems progressively becomes more mesic and …
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Forest Densification Over 85 Years in a Sierra Nevada Mixed-Conifer Forest Decreases Conifer Regeneration and Limits Survival
… densification in response to a century of fire suppression in Sierra Nevada mixed conifer forests has decreased conifer regeneration and survival. Increases in overstory biomass and decreases in canopy heterogeneity, along with decreases in shrub cover in the understory, has created …
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Change in piñon-juniper woodland cover since Euro-American settlement: expansion versus contraction associated with soil properties
… vegetation type of the U.S. Southwest. Fire suppression and grazing are often cited as the main drivers of these historic changes and have led to extensive tree-reduction treatments across the region. However, much of the scientific literature on piñon-juniper expansion dates back only …
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Direct and large-eddy simulation of interactions between reacting flows and evaporating droplets
… of industrial and domestic applications such as fire suppression systems and humidified gas turbines. Experimental measurements are usually limited to global quantities or local quantities at limited spatial locations, which provide little detailed information for fundamental understanding of …
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Hydration Delivery Systems for Wildland Firefighters
… both physical and cognitive function. Wildland firefighters (WLFF) experience long arduous work shifts under extreme environmental conditions. Previous studies by our lab have demonstrated that maintenance of euhydration during fire suppression can be difficult. Purpose: The purpose of this …
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Hydration Delivery Systems for Wildland Firefighters
… both physical and cognitive function. Wildland firefighters (WLFF) experience long arduous work shifts under extreme environmental conditions. Previous studies by our lab have demonstrated that maintenance of euhydration during fire suppression can be difficult. Purpose: The purpose of this …
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Prediction of water droplet behaviour during fire extinguishment
Sprinklers have been used in fire suppression for about 100 years. Even though their design has changed from simple perforated pipes to sophisticated automatic systems of mist and sprinkler nozzles, still they play the same role - they dramatically reduce death and injuries due to fire, as well as …
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Reduced Kinetic Mechanisms For Premixedhydrogen-air-cf3br Flames
… bromotrifluoromethane, had been widely used as fire-extinguishing agent for many years before its production and consumption were severely regulated by the Montreal Protocol due to its hazardous depletion effect to the stratospheric ozone layer. It is therefore imperative to find an effective …
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Genotypic and Phenotypic Variation of the Florida Scrub Lizard (Sceloporus Woodi)
… historically maintained through frequent wildfires. The ONF is fragmented from clearcut logging, fire suppression, and by major roadways. I examined five microsatellite loci to estimate genetic differentiation across the forest and near a major roadway (Florida State Route 40). The results …
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The development of automatic fire protection methods for computing and telecommunications areas
… disruption, as downtime resulting from a fire condition could lead to huge financial losses. Minimising negative impact on an organization and the need for a sound basis in the decision making process are the fundamental reasons why companies implement fire risk management for their …
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Disturbance impacts on non-native plant colonization in black spruce forests of interior Alaska
… dominant forest type in interior Alaska, and wildfire is the dominant disturbance in these forests. Furthermore, disturbances in the form of management for fire suppression are common in forests close to urban areas. I surveyed recently burned, managed, and undisturbed black spruce forests for …
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Negative Effects Of ComMycorrhizal Networks And Roots On Upland Oak Seedlings In Open-Canopy Woodlands And Closed-Canopy Forests
After extensive logging and fire suppression many oak dominated woodlands or forests are in danger of being replaced by a mix of non-pyrogenic and shade tolerant tree species that benefit from fire suppression. Successful advanced regeneration by oaks in forests and woodlands depends both on the …
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Holocene Fire History Reconstruction of a Mid-Evaluation Mixed-Conifer Forest in the Eastern Cascades, Washington
Fire histories of mid-elevation mixed-conifer forests (MEMC) are uncommon, particularly in the eastern Cascades of Washington. As a result, fire regimes and the effects of 20th century fire suppression in these forests are not well understood. In the summer of 2014 a 7.80 meter-long sediment core …
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Integrated Modeling of Long-Term Vegetation and Hydrologic Dynamics in Rocky Mountain Watersheds
… SLIMM was used to evaluate natural and fire-suppressed forest management alternatives over a 300-year period. Compared to natural development, fire suppression created larger stand sizes, greater levels of aggregation, and increased the likelihood of process propagation across the …
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