نتایج جستجو برای: dry and semi
تعداد نتایج: 16857664 فیلتر نتایج به سال:
Sustainable cementitious composite panels are gaining interest as efforts to reduce environmental burdens increase. This study investigated the possibilities and reinforcement effects of developing from coconut husk derived materials (CM) reed straw (RS) particles in presence Ordinary Portland cement (OPC). Five with 1200 kg/m 3 densities 400 × 8 mm dimensions were produced. The proportion lign...
in this study the response of 9 rapeseed genotypes were evaluated at the seedling stage using different irrigation levels (50, 70 and 100% fc). a factorial experiment based on rcbd was conducted in the research greenhouses of urmia university with four replications during summer of 2013. some physiological traits such as relative water content, stomatal conductance, transpiration, photosynthesi...
Abstract There is a growing interest in developing cement bonded lignocellulosic fiber (LF) composites with enhanced mechanical performances. This study assessed the possibility of composite panels 12 mm thickness and around 1200 kg/m 3 nominal densities from ordinary Portland cements (OPC) mixed LFs seven different woody plants found Hungary. Once were sieved fine (0–0.6 mm) medium (0.6–0.8 le...
crop productivity, water use efficiency (wue), and microbial biomass c and n in rainfed dry area are influenced by tillage, rotation, and crop residue management. field experiments were conducted during 2005-08 to study the effect of tillage, crop rotation, and crop residue retention on oat fodder yield, water use efficiency, and microbial biomass c (mbc) and n (mbn) under semi-arid conditions ...
a major part of the rangelands of iran are located in arid and semi-arid regions. in this climate, rainfall fluctuation is an important factor which affects vegetation and forage production. in dry years that rainfall decreases, surface vegetation and forage production is damaged. this study was conducted on semi-steppic rangelands of ardebil over nine years (1999-2007), to study of vegetation ...
In the wet-dry tropics, animal species face the major challenges of acquiring food, water or shelter during an extended dry season. Although large and conspicuous animals such as ungulates and waterfowl migrate to wetter areas during this time, little is known of how smaller and more cryptic animal species with less mobility meet these challenges. We fenced off the entire entrance of a gorge in...
To reduce the energy consumption and cost of drying sewage sludge (SS) to ensure stability during combustion, pyrolysis co-combustion characteristics semi-dry SS after dehydration flocculant bituminous coal (BC) were studied in this work. The results show that decrease moisture content accelerates release volatile substances, increase heating rate can also enhance water matters. Furthermore, BC...
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