نتایج جستجو برای: fire resistant

تعداد نتایج: 234522  

Journal: :جنگل و فرآورده های چوب 0
فرخ پورشکوری اله ده دانشجوی دکتری جنگل‏داری، دانشکدۀ منابع طبیعی دانشگاه تهران، کرج، ایران علی اصغر درویش صفت استاد دانشکدۀ منابع طبیعی دانشگاه تهران، کرج، ایران فرهاد صمدزادگان استاد دانشکدۀ فنی دانشگاه تهران، تهران، ایران پدرام عطارد دانشیار دانشکدۀ منابع طبیعی دانشگاه تهران، کرج، ایران

moderate resolution imaging spectroradiometer (modis) have been widely used for active fire detection in the world as the specific channels used for the fire detection have made the modis images applicable. the main objective was to explore the capability of modis images for active fire detection in the zagross forests using the modis contextual algorithm. the study was performed in the marivan...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2012
William J Bond Guy F Midgley

Savannahs are a mixture of trees and grasses often occurring as alternate states to closed forests. Savannah fires are frequent where grass productivity is high in the wet season. Fires help maintain grassy vegetation where the climate is suitable for woodlands or forests. Saplings in savannahs are particularly vulnerable to topkill of above-ground biomass. Larger trees are more fire-resistant ...

ژورنال: سلامت کار ایران 2018

Background and aims: Providing the adequate flow and water pressure in the firefighting network of the power plants requires the proper design and analysis of the firefighting system. This study aimed to model and hydraulic analysis the fire network in a combined cycle power plant to determine the network efficiency in the extinguishing of the possible fire. Methods: In the present study, the ...

Journal: :Journal of Structural and Construction Engineering (Transactions of AIJ) 2007

Journal: :جغرافیا و مخاطرات محیطی 0
حسن فرامرزی سید محسن حسینی مهدی غلامعلی فرد

1. introduction extensive fires in the forests are examples of natural crises (hosseinali, 2005) and forest fire events are increasing in the conditions of changing climate and global warming; (azizi and yousefi, 2005). this phenomenon is considered one of the most destructive factors for forest ecosystems, causing irreparable damages (marozas et al, 2007). some of these damages include land us...

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