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...

nitrogen oxides and carbon monoxide gases together with dust are known as the major pollutants arising during the blasting operations using the ammonium nitrate-fuel oil (anfo) explosive at the sungun surface mine, located in the northwest of iran. the pollutants were monitored during some blasting operations at the mine. it was concluded that the gases and dust clouds initially went up to the ...

sarcheshmeh copper mine, with the final reserves of 828 million tons of sulfur ore and average grade of 0.74%, is known to be the largest open pit of iran and most probably the second largest copper mine in the world. this mine is located in the seismotectonic zone of central-iran, and 23 km away from the 150 km long rafsanjan active fault.in this study the vulnerability of the west wall of the...

Background and objective In 2014, a 6-week-long fire at the Hazelwood coal mine exposed residents in adjacent town of Morwell to high concentrations fine particulate matter with an aerodynamic diameter < 2.5 μm (PM2.5). The long-term health consequences are being evaluated as part Health Study. Methods Approximately 3.5–4 years after fire, adults from (n = 346) comparison Sale 173) participated...

In order to improve the real-time and accuracy of mine fire identification, based on summary existing monitoring methods, a early warning model patrol robot multi-sensor image recognition is proposed. The video obtained by using high-definition camera inspection robot, flame suspected area combining frame difference background after filtering. improved three scale analytic hierarchy process use...