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 20 of 35 for “"surface moisture"”.
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Microwave remote sensing of near-surface moisture and temperature profiles.
Thesis. 1976. Ph.D.--Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
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Influence of near surface moisture gradients in concrete on 'Autoclam' permeation measurements
In this thesis the effect of moisture in the surface layers of concrete on the permeation properties measured using the 'Autoclam' is investigated. A literature survey indicated two main ways of removing the influence of moisture on these tests - to assess the moisture condition of the concrete and …
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Effect of Surface Moisture Condition on Substrate-Repair Concrete Overlay Transition Zone
… newly formed substrate-repair concrete, such as surface roughness, overlay material, and substrate moisture condition. The work presented in this thesis is dedicated to understanding the effect of substrate moisture condition on the overlay transition zone (OTZ) of the substrate-repair concrete. …
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Coupled roles of hydraulic redistribution and sub-surface moisture transport in semiarid ecosystems
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2023-12-01
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An analysis of the surface moisture fluxes in the Argentinian Cordoba region using the 2018-2019 RELAMPAGO field campaign data
… and modeling of the water-energy balance. Near surface land-atmosphere interactions can be difficult to capture accurately using popular remote sensing techniques, and moreover, obtaining ground measurements is time, labor, and economically intensive. Issues with representing the fluxes is …
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Development of algorithms for asphalt pavement compaction monitoring utilizing ground penetrating radar
… this technique is to eliminate the effect of surface moisture, sprayed by the compactor during compaction, on GPR data. The increase of asphalt pavement density and surface moisture content can cause an increase in the amplitude of the reflection pulse in the GPR signals in time domain. To …
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Soil Moisture Estimation From Soil Spectral Characteristics in a Precision Farming Environment
… data were analyzed in conjunction with surface moisture data to determine the nature of the relationship between the two. For one of the fields, the strongest relationship between reflectance and surface moisture was between 550 and 620 nm. For the other, the strongest relationship was …
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Spatial and Seasonal Variations in Aridification Across Southwest North America
… global temperatures. Trends in the regional surface moisture balance (P−E) of SWNA vary between the arid southern subregion (mostly Northern Mexico) and the more temperate northern subregion (Southwest US), depending on the relative contributions of cold and warm season P and E. Interpreting …
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Drylines over the interior of subtropical southern Africa
Drylines are surface airmass boundaries separating regions of very dry air from regions of moist air. Due to changes in airflow that occur along the interface of these boundaries, they are known to act as zones of surface convergence which can trigger convection. For this reason drylines have been …
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The planning of a South African airborne synthetic aperture radar measuring campaign
… niche in remote sensing with applications in subsurface mapping, surface moisture mapping, vegetation mapping, rock type discrimination and Digital Elevation Modelling. Since these applications have considerable scientific and economic benefits, the Radar Remote Sensing Group at the University of …
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Practical application of the torrent permeability test method with the South African durability index approach
… was attributed to the pore-blocking effect of moisture on the Torrent test, emphasizing how surface moisture may affect the measured results even within permissible moisture levels. Nonetheless, the site correlation in the summer confirmed findings from previous studies. Given this study's …
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Carbonation of concrete bridge structures in three South African localities
… humidity in Durban locality make the near surface moisture content of exposed and sheltered elements very similar. Likewise, it is surmised that short rainfall duration and low relative humidity in Johannesburg locality result in essentially the same near surface moisture content of …
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Epoxy-Based, Rapid Setting Polymer Concretes for use in Military Airfield Repairs
… original PCC slab. Finally, the effect of the surface moisture content of PCC on the bonding strength and chloride ion penetration resistance when PCC is bonded to PC was tested by casting Commercial Product "B" against ordinary PCC under two different moisture conditions: surface saturated dry …
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Development of a Novel Fine Coal Cleaning and Dewatering Technology
… simultaneously removes both mineral matter and surface moisture from fine coal particles. The first stage of the process uses immiscible non-polar liquids, such as straight chain hydrocarbons, to selectively agglomerate fine coal particles in an aqueous medium. The agglomerates are then passed …
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Low Temperature Drying of Ultrafine Coal
… properties of water indicates residual surface moisture should spontaneously evaporate under these conditions. This is contingent on the large surface area of these fine particles being adequately exposed to an unsaturated stream of air. To demonstrate this process, three dispersion …
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Dry Deshaling of Thermal Coals in India
… over wet cleaning operations, including reduced surface moisture, enhanced heating value, elimination of processing water and waste slurries, and reduced transportation of large amounts of ash-forming minerals. To evaluate this potential, a pilot-scale air table deshaling unit was tested at three …
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Prediction of asphalt concrete pavement density from processing ground-penetrating radar compaction data
… air-coupled antennas. However, issues, including surface moisture effect due to water spray during compaction, vibration effect during continuous GPR survey, and signal processing complexity, may hinder AC density prediction accuracy. This study addressed the aforementioned issues and developed …
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A numerical simulation of tropical storm Chedza over south-eastern Africa
… in the northern Mozambique Channel, leading to surface moisture flux convergence in the regions of heavy rainfall. Furthermore, moisture from the southwest Indian Ocean was advected into the region during the heavy rainfall. It is suggested that multiple favourable factors which included strong …
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