نتایج جستجو برای: 85 topsoil samples 0
تعداد نتایج: 1035557 فیلتر نتایج به سال:
Abstract Cocoa ( Theobroma cacao ) seedlings are very sensitive to water stress during the nursery stage and early field establishment. Sawdust, carbonated rice husk, compost in following ratios (i) 60: 40: 0 – M1, (ii) 30: 10 M2, (iii) 20: 20 M3, (iv) 10: 30 M4, (v) 0: 40 M5, (vi) topsoil M6 as control were used investigate effect of growing media, stress, re-watering on growth, dry matter pro...
Windblown transport and deposition of dust is widely recognized as an important physical and chemical concern to climate, human health and ecosystems. Sistan is a region located in southeast Iran with extensive wind erosion, severe desertification and intense dust storms, which cause adverse effects in regional air quality and human health. To mitigate the impact of these phenomena, it is vital...
بررسی ارزش غذایی تاغ و عمل آوری آن با سود و آهک در مراحل مختلف رشدبا استفاده از روش کیسه های نایلونی
abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage ...
Previous research on the relationship between edaphic factors and species diversity patterns has mostly focused topsoil 0 30 cm, with less attention paid to deeper layers where many plant root systems are concentrated. Since considering might help unravel maintenance mechanisms of diversity, in present study we explored vegetation β-diversity a comprehensive set soil chemical attributes at diff...
The emergence of resistance to antiretroviral drugs is a major obstacle to the successful treatment of human immunodeficiency virus type 1 (HIV-1)-infected patients. In this work, we correlate clinical and virological trends such as viral load (VL) and CD4 counts to genotypic and phenotypic antiretroviral (ARV) resistance profiles of HIV-1 isolates from the B and non-B subtypes found in vertica...
The distribution of antimony (Sb) in topsoil and moss (Dicranum angustum) in disturbed and undisturbed areas, as well as coal and gangue, in Ny-Ålesund, Arctic was examined. Results show that the weathering of coal bed could not contribute to the increase of Sb concentrations in topsoil and moss in the study area. The distribution of Sb is partially associated with traffic and historical mining...
Despite a multitude of studies, overall erosion rates as well as the contribution of different erosion processes on Chinese Loess Plateau (CLP) remain uncertain, which hampers a correct assessment of the impact of soil erosion on carbon and nutrient cycling as well as on crop productivity. In this paper we used a novel approach, based on field evidence, to reassess erosion rates on the CLP befo...
Heavy metals in urban soils continue to attract attention because of their potential long-term effects on human health. During a previous investigation of urban soils in Galway City, Ireland, a pollution hotspot of Pb, Cu, Zn and As was identified in the sports ground of South Park in the Claddagh. The sports ground was formerly a rubbish dumping site for both municipal and industrial wastes. I...
Fly agaric (Amanita muscaria) was investigated using a 1H NMR-based metabolomics approach. The caps and stems were studied separately, revealing different metabolic compositions. Additionally, multivariate data analyses of the fungal basidiomata and the type of soil were performed. Compared to the stems, A. muscaria caps exhibited higher concentrations of isoleucine, leucine, valine, alanine, a...
From the geoecological point of view, a special place in geological section Kirchhoff Hill is occupied by highly radioactive bodies – dictyonema oil shales. As result glacial tectonic dislocations and due to numerous local elevations depressions relief, shales can come into direct contact with soil over relatively large areas here. Based on results route survey gamma field soils zone anomalousl...
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