Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"I-soil"”.
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The impact of harvesting and site preparation on nutrient dynamics, soil erosion and stream water quality in the Virginia Piedmont
… and 4) shear, rake-pile, disc. A combination of soil solution, streamwater and soil sampling and a series of soil incubations, both laboratory and <i>in situ</i> monitored changes in the treatment areas following site preparation. Available nitrogen reserves decreased substantially in the shear, …
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Atmospheric circulation and sea surface temperature anomalies during the dry summers of 2001/02, 2002/03 and 2003/04 in Southern Africa
… leads to depletion of storage of I. soil moisture that results in dry land crop failure and dying-off grazing and other vegetations, II. of ground water, which results in drying up of springs, streams and boreholes and Ill. of water in man-made reservoirs, which results in stress to …
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Multipass effects of wheel and track type vehicles on soil compaction
… moisture level, and their interactions on soil compaction. During the study two procedures commonly used for soil bulk density determination were also compared. Treatments at the following levels were applied: i) Soil moisture: Two levels ii) Vehicle type: wheel and track type iii) Traffic …
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Carbon dioxide emissions from selected soils in Zambia : effects of nitrogenous fertilizer and agricultural lime.
Soils can serve as sources or sinks of atmospheric carbon dioxide (CO2) depending on how they are managed. As atmospheric CO2 concentrations continue to rise there is need to find ways of reducing CO2 emissions from soils. This study was conducted to assess the effects of applying agricultural lime …
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Phosphate Reactivity in Long-Term Manure Amended Soils in the Ridge and Valley of Virginia
… released in overland flow is related to P form, soil solution P concentration and the release rate of P from soil. Models relating soil test P (STP) to water soluble P (WSP) and the degree of P saturation (DPS) to STP are used in Virginia to estimate P loss potential. Typically the reservoir of …
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Phosphorus Management: An Analysis of the Virginia Phosphorus Index
… runoff, and/or leaching coupled with high soil test P and/or high rate of fertilizer P application. A management tool is needed to identify those fields that have a high transport and source potential to deliver P to surface water. The Virginia P-Index is a mass-based tool that estimates …
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Numerical simulations of site response and seismic settlements at Kashiwazaki-Kariwa Nuclear Power Plant, Japan
… fire. This study focuses on three-dimensional, soil-porewater pressure coupled numerical modeling of multi-directional shear and volumetric response of Service Hall free-field site and Arahama Site on which the reactor and turbine buildings, as well as the transformer house are located using a …
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Numerical modeling and simulation of seismic settlements on dense sands
Embargo set by: Seth Robbins for item 114004 Lift date: 2022-03-02T22:39:04Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system
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Inhibition of Canopy Tree Seedlings by Thickets of <I>Rhododendron maximum</I> L. (Ericaceae) in an Eastern Deciduous Forest
… μmol m⁻² s⁻¹ in sites without <I>R. maximum</I>. Soil moisture content, measured using Time Domain Reflectometry was approximately 6% lower in forest sites with <I>R. maximum</I> compared to sites without <I>R. maximum</I> throughout the growing season. Most nutrient concentrations (e.g.,, C, N …
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Soil degradation: Its aspects and modelling
… region, Sudan. In order to investigate the soil degradation aspects in the study area, its causal, rate per time and mapping; the remote sensing and GIS technologies were used beside the routine soil survey and laboratory analyses. Quantitative information on soils degradation and vegetation …
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Analysis of Aquifer and Operational Conditions for Successful Soil Aquifer Treatment of Treated Wastewater via Synthesis of Published Full-Scale and Laboratory-Scale Studies
<p>Soil aquifer treatment (SAT) of treated wastewater performance was evaluated across published full-scale and lab-scale studies developing insights on the aquifer and operational factors that affect SAT efficacy. The goal of this study was to develop a basis for predicting the contaminant removal …