نتایج جستجو برای: north peat c2
تعداد نتایج: 183007 فیلتر نتایج به سال:
One source of energy, the importance of which has been realized with the advance of increasing fuel prices, is peat, a renewing resource of nature typical for some areas in northern Europe. Because of the comparatively difficult processing properties of peat and the quite short history of efficient development on this area the technology of peat burning plants now needs a systematic programme o...
The majority of the catchment (area 0.95 km2) is corered by a thin deposit of blanket peat. Peats, over 5 m deep in places, occur in small valley depressions. Two transects across the depressions were selected for a radiocarbon and palaeoecological study into peatland initiation and development (Jones, 1987). As in the Loch Dungeon study, analysis of pollen from peat profiles enables a picture ...
Abstract The aim of this research is to predict foundation settlement resting on peat soil layer using a numerical analysis software Plaxis 2D ver. 2020. study area located at Kafr Saad Domiat province extreme north east Nile Delta, Egypt. Peat known be the worst materials because its compressibility and low bearing capacity. studied building was five stories founded rigid raft. depth 1.5 m net...
aim : the aim of the present study was to determine the species and genotypes of cryptosporidium spp. among children with diarrhea by pcr- rflp using the trap-c2 gene. background : cryptosporidium is a globally distributed protozoan parasite and one of the most common causes of infection and diarrhea in humans. patients and methods : four hundred and sixty nine stool samples were collected from...
A pseudo-second order rate equation describing the kinetics of sorption of divalent metal ions on to sphagnum moss peat at various initial metal ion concentrations and peat doses has been developed. The sorption kinetics were followed based on the concentrations of metal sorbed at various time intervals. Results show that chemical sorption processes might be rate-limiting for the sorption of di...
Controls on the fate of ~277 Pg of soil organic carbon (C) stored in permafrost peatland soils remain poorly understood despite the potential for a significant positive feedback to climate change. Our objective was to quantify the temperature, moisture, organic matter, and microbial controls on soil organic carbon (SOC) losses following permafrost thaw in peat soils across Alaska. We compared t...
During the 1997/98 El Niño-induced drought peatland fires in Indonesia may have released 13-40% of the mean annual global carbon emissions from fossil fuels. One major unknown in current peatland emission estimations is how much peat is combusted by fire. Using a light detection and ranging data set acquired in Central Kalimantan, Borneo, in 2007, one year after the severe peatland fires of 200...
Four different compression/impression floras are preserved in only 4.32 m of the geologic section in the Early Permian Shanxi Formation of the Wuda District of Inner Mongolia, northwestern China. These floras represent four different plant communities and landscapes that followed each other in time. The oldest flora was rooted in sandy clay and initiated peat accumulation that lead to the forma...
1. The coastal peat swamp forests of Sarawak, Malaysian Borneo, are undergoing rapid conversion, predominantly into oil palm plantations. This wetland ecosystem is assumed to have experienced insignificant disturbance in the past, persisting under a single ecologically-stable regime. However, there is limited knowledge of the past disturbance regime, long-term functioning and fundamentally the ...
Hydroponics culture have many advantages such as increased yield, health and uniform product, conservation of water and land , better protect , control of environmental pollution and reduce of workers for cultivation. So in recently years, usage of organic and inorganic substrates obtained more important for greenhouse owners and researchers. The aim of this study was Effects of culture substra...
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