نتایج جستجو برای: fire extinguishing system

تعداد نتایج: 2266608  

Journal: :Ecology 2014
Julian Resasco Nick M Haddad John L Orrock DeWayne Shoemaker Lars A Brudvig Ellen I Damschen Joshua J Tewksbury Douglas J Levey

Landscape corridors are commonly used to mitigate negative effects of habitat fragmentation, but concerns persist that they may facilitate the spread of invasive species. In a replicated landscape experiment of open habitat, we measured effects of corridors on the invasive fire ant, Solenopsis invicta, and native ants. Fire ants have two social forms: polygyne, which tend to disperse poorly but...

2011
Ivana TUREKOVÁ Karol BALOG

Extinguishing foams are commonly used for extinguishing the fire of flammable liquids, whereby their insulating, choking and quenching effects are exploited. The purpose of the paper is to consider and compare the foams currently used in fire departments, regarding mainly their high extinguishing effect (capability of faster aborted burning on the large surface at low foam consumption), but als...

Journal: :Ecology 2006
M A Krawchuk S G Cumming M D Flannigan R W Wein

Lightning fire is the dominant natural disturbance of the western mixedwood boreal forest of North America. We quantified the independent effects of weather and forest composition on lightning fire initiation (a detected and recorded fire start) patterns in Alberta, Canada, to demonstrate how these biotic and abiotic components contribute to ecosystem dynamics in the mixedwood boreal forest. We...

Journal: :علوم و تکنولوژی پلیمر 0
الهام فیض یوسف جهانی مسعود اسفنده سیدحسن جعفری

nanoclay/triphenyl phosphate hybrid system was employed to examine the fire retardancy and mechanical properties of pc/abs blends. each of the polymers and their blends are widely used in the automotive, electrical andelectronic industries. because most thermoplastics are easily combustible they need to be flame retarded to reduce the burning rate especially in the initial phase of a fire incid...

2015

HISTORIC[1] Halogenated compounds have been employed as fire extinguishing agents since the early 1900s, when handheld extinguishers containing carbon tetrachloride (CCl4) were first introduced. In the late 1920s, methyl bromide (CH3Br) was found to be more effective than carbon tetrachloride, and was widely used as a fire extinguishing agent by the British in the late 1930s for aircraft protec...

Journal: :Advances in Science, Technology and Engineering Systems Journal 2017

2009
Lei Zhang Gaofeng Wang Faouzi Derbel

Fire disaster is a great threat to lives and property. Automatic fire alarm system provides real-time surveillance, monitoring and automatic alarm. It sends early alarm when the fire occurs and helps to reduce the fire damage. Wireless sensor network has become the most important technology in environmental monitoring and home or factory automation in recent years. In this paper, an automatic f...

Journal: :international journal of environmental research 0

filling stations inside the urban environment are known as one of the existing and potential dangers in cities which according to their centralized fire load can be of high safety importance. tehran holds 101 active filling stations faced to extreme accidents and high explosion potentials. in this study, 59 out of 101 gas stations were investigated under the fire risk assessment implementation....

2002
Richard W. Bukowski

Fire protection strategies are designed and installed to perform specific functions. For example, a fire sprinkler system is expected to control or extinguish fires: To accomplish this, the system sprinklers must open, and the required amount of water to achieve control or extinguishment must be delivered to the fire location. A fire detection system is intended to provide sufficient early warn...

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