نتایج جستجو برای: fire resistant

تعداد نتایج: 234522  

2010
Kara A. Teacoach James H. Rowland Alex C. Smith

Current regulations for fire suppression systems in underground coal mines to protect conveyor belt installations have been in place since the Coal Mine Health and Safety Act of 1969 was enacted. Over time, the coal conveyer equipment being used and ventilation conditions underground have changed significantly, particularly the width of the conveyor belts and the use of belt air at the face. Th...

Journal: :Mrs Bulletin 2021

Abstract There is major fire safety concern about failure propagation of thermal runaway in multicell lithium-ion batteries. This article overviews the passive fire-protection approach based on insulation by intumescent coating materials and blankets for viable resistance. The will expand (up to 100× heating) form a thick, porous char layer act as barrier insulate substrate. It also used seal a...

2010
JILL F. JOHNSTONE ELIOT J. B. MCINTIRE ERIC J. PEDERSEN GREGORY KING MICHAEL J. F. PISARIC

Changes in Earth’s environment are expected to stimulate changes in the composition and structure of ecosystems, but it is still unclear how the dynamics of these responses will play out over time. In long-lived forest systems, communities of established individuals may be resistant to respond to directional climate change, but may be highly sensitive to climate effects during the early life st...

Journal: :int. j. lignocellulosic products 2014
a. khozeini t. tabarsa m. mashkour

this study was conducted to investigate the effects of applying methods andamount of ammonium polyphosphate (0, 2 and 4 wt%) on fire retardancy andmechanical properties of wood flour/polypropylene composites. the resultsshowed that addition of fire retardant improved the mechanical properties such astensile and flexural strengths and fire retardancy of composites. but by increasingof fire retar...

2017
Susana Gómez-González Susana Paula Lohengrin A Cavieres Juli G Pausas

Fire is a selective agent shaping plant traits and community assembly in fire-prone ecosystems. However, in ecosystems with no fire history, it can be a cause of land degradation when it is suddenly introduced by humans, as plant species may not be able to respond to such novel disturbance. Unlike other Mediterranean-type ecosystems (MTE) of the world, natural fires have not been frequent durin...

2016
L. Gardner

The initial material cost of structural stainless steel is about four times that of structural carbon steel, due largely to the expense of the alloying elements and the relatively low volume of production. Given broadly similar structural performance, additional areas of benefit need to be identified and exploited in order to establish stainless steel as a viable alternative material for constr...

2015
Thomas D. Kost Cesare Gessler Melanie Jänsch Henryk Flachowsky Andrea Patocchi Giovanni A. L. Broggini Boris Alexander Vinatzer

The generation and selection of novel fire blight resistant apple genotypes would greatly improve the management of this devastating disease, caused by Erwinia amylovora. Such resistant genotypes are currently developed by conventional breeding, but novel breeding technologies including cisgenesis could be an alternative approach. A cisgenic apple line C44.4.146 was regenerated using the cisgen...

Journal: :Ecological applications : a publication of the Ecological Society of America 2009
Malcolm North Matthew Hurteau James Innes

Depending on management, forests can be an important sink or source of carbon that if released as CO2 could contribute to global warming. Many forests in the western United States are being treated to reduce fuels, yet the effects of these treatments on forest carbon are not well understood. We compared the immediate effects of fuels treatments on carbon stocks and releases in replicated plots ...

Forest fire in recent years has paid great attention to climate change and ecosystems. Remote sensing is a quick and inexpensive way to detect and monitor forest fires on a large scale. The purpose of this study was to identify forest and rangeland fire hazards using NOAA / AVHRR in Kayamaki Wildlife Refuge. For the purpose of this study, the history of the fire-burns occurred in MODIS products...

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