نتایج جستجو برای: flammability testing

تعداد نتایج: 338280  

2010
Robert H. MacArthur ALAN HASTINGS KYLE E. HARMS MICHAEL LAVINE SUBHASH R. LELE JAMES S. HODGES MICHAEL W. MILLER DAVID O. CONOVER ROBERT R. WARNER ANDREW H. BAIRD TIMOTHY R. MCCLANAHAN

Pyrogenic plants dominate many fire-prone ecosystems. Their prevalence suggests some advantage to their enhanced flammability, but researchers have had difficulty tying pyrogenicity to individual-level advantages. Based on our review, we propose that enhanced flammability in fire-prone ecosystems should protect the belowground organs and nearby propagules of certain individual plants during fir...

2010
PAUL R. GAGNON HEATHER A. PASSMORE WILLIAM J. PLATT JONATHAN A. MYERS C. E. TIMOTHY PAINE KYLE E. HARMS

Pyrogenic plants dominate many fire-prone ecosystems. Their prevalence suggests some advantage to their enhanced flammability, but researchers have had difficulty tying pyrogenicity to individual-level advantages. Based on our review, we propose that enhanced flammability in fire-prone ecosystems should protect the belowground organs and nearby propagules of certain individual plants during fir...

2016
Kimberley J. Simpson Brad S. Ripley Pascal‐Antoine Christin Claire M. Belcher Caroline E. R. Lehmann Gavin H. Thomas Colin P. Osborne Hans Cornelissen

Tropical grasses fuel the majority of fires on Earth. In fire-prone landscapes, enhanced flammability may be adaptive for grasses via the maintenance of an open canopy and an increase in spatiotemporal opportunities for recruitment and regeneration. In addition, by burning intensely but briefly, high flammability may protect resprouting buds from lethal temperatures. Despite these potential ben...

2013
Thibaut Frejaville Thomas Curt Christopher Carcaillet

Relationships between the flammability properties of a given plant and its chances of survival after a fire still remain unknown. We hypothesize that the bark flammability of a tree reduces the potential for tree survival following surface fires, and that if tree resistance to fire is provided by a thick insulating bark, the latter must be few flammable. We test, on subalpine tree species, the ...

2014
Ryuichi Nagaosa Vikrant Aute Reinhard Radermacher Ryuichi NAGAOSA Vikrant C. AUTE Reinhard RADERMACHER

This study proposes a procedure for a risk analysis for leakages of flammable refrigerants into a poorly ventilated three-dimensional space. It also presents several test cases of risk analyses on flammability and ignitions to a leaked refrigerant. Concentration of a leaked flammable refrigerant at a leakage window, Cin, is determined by mass balance, providing information on the capacity of an...

Journal: :Journal of hazardous materials 2005
S Y Liao D M Jiang Z H Huang Q Cheng J Gao Y Hu

The growing implementation of exhaust gas recirculation (EGR) in reducing NO(x) emissions of engine is of paramount motivation to perform a fundamental research on the flammability characteristics of fuel-air-diluent mixtures. In this work, the influences of EGR on the flammability region of natural gas-air-diluent flames were experimentally studied in a constant volume bomb. An assumption of c...

Journal: :The New phytologist 2012
Juli G Pausas Giorgio A Alessio Bruno Moreira Guadalupe Corcobado

Wildfires have been occurring in terrestrial ecosystems since the early evolution of plants (Bowman et al., 2009; Pausas & Keeley, 2009; Bond & Scott, 2010) and have shaped many species and ecosystems worldwide (Keeley et al., 2011). Plant flammability is an important driver of fire in terrestrial ecosystems and thus has a fundamental role in ecosystem dynamics and species evolution (Belcher et...

Journal: :The New phytologist 2012
Juli G Pausas Bruno Moreira

Studies examining plant flammability descriptors as fire-adaptive traits (e.g., Schwilk, 2003; Scarff & Westoby, 2006; Cowan & Ackerly, 2010; Saura-Mas et al., 2010; Pausas et al., 2012) are normally formulated within the framework of inclusive fitness theory. In such framework, flammabilityenhancing traits are considered to favour individuals if the elevated flammability confers fitness benefi...

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