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 19 of 19 for “"moisture sensors"”.
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Water Conservation Practices for Irrigation of Turfgrass Lawns
… objectives: 1) evaluate the use of rain and soil moisture sensors in a humid transition zone environment; 2) evaluate the effects of chronic drought stress between drought-resistant and drought-sensitive varieties of tall fescue (Festuca arundinacea Schreb.; TF) and Kentucky bluegrass (Poa …
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Aedre, An Automated Watering System
… saturation level detection through use of moisture sensors, and water distribution through solenoid valves connected to drip lines.
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Hydrologic Response to Conifer Removal and Upslope Harvest in an Encroached Montane Meadow
… implemented by the Collins Pine Company. Soil moisture sensors at one foot below the ground and water table depth sensors at four feet below ground were installed in Marian Meadow and a control meadow in September 2013, with additional soil moisture sensors at three-foot depth installed August …
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Moisture Monitoring of a CLT Structure in a Southern Climate
<p>Understanding of moisture behavior in cross laminated timber (CLT) is critical to the widespread use of CLT in construction in the United States. Currently, very little data exists on the long-term impact of moisture on CLT. The objective of this research is to collect data regarding the …
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Real-time control of soil moisture for efficient irrigation
… a predetermined rate, duration, and minimum soil moisture. Due to the ease of installation of soil moisture sensors, this technology has been installed around the world. There have been few studies on altering the controller used with this existing infrastructure. This thesis articulates a model …
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Designing Plasmonic Materials And Optical Metasurfaces For Light Manipulation And Optical Sensing
… areas: optical filters, lenses, holography, sensors, photodetectors, photovoltaics, photocatalysts, medical devices, and many more, because of their excellent abilities in bending, absorbing, enhancing and blocking light. However, the practical use of metamaterials is challenged by the lack …
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Accuracy of Heat-Pulse Sensors for Determining Moisture of Capillary Mat Material Used to Support Plant Growth
… Technologies (Orbitec, Madison, WI) Thermal and Moisture Acquisition System (TMAS) sensors were investigated for use in the WONDER space flight experiment. WONDER is studying the effect of multiple wetness level regimes and two different nutrient delivery systems (NDS) on plants grown in the …
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Use Patterns and Influencing Factors of Irrigation Best Management Practices in the Lower Mississippi River Basin
… advanced irrigation scheduling practices (soil moisture sensors, ET or atmometers, computerized scheduling, and Woodruff charts). We find that most of the sample producers use between one and four individual IBMPs from two or more groups. Explanatory variables consist of producer characteristics …
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EVALUATION OF BEDROCK DEPTH AND SOIL INFILTRATION ALONG PENNYPACK CREEK USING ELECTRICAL RESISTIVITY TOMOGRAPHY AND MOISTURE LOGGERS
… improved. The goal of this study was to use soil moisture loggers and electrical resistivity tomography (ERT) along the Pennypack Creek (Philadelphia, PA) to evaluate soil infiltration and bedrock depth in urban areas to ultimately access their impact on critical zone modeling. ERT was also used …
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Accuracy of hay moisture sensing systems for round alfalfa bales
Moisture measurement is critical when baling alfalfa into round bales for feed. If alfalfa is too wet or too dry, it can greatly diminish the alfalfa crop’s feed quality and cause economic loss to producers. Therefore, monitoring of alfalfa moisture content while baling is critical for producers to …
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An experimental investigation of leakage flow paths in soil surrounding leaks in water distribution systems
… leak flow as a preliminary study. The volumetric moisture content were measured using EC-5 moisture sensors at different locations in the tank to analyse the movement of leakage water and iPERLS smart water meters were used to measure the flow of water through the walls of the trench. The results …
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Improving Soil Moisture Assessment of Turfgrass Systems Utilizing Field Radiometry
… using time-domain reflectometer (TDR) soil moisture sensors can decrease water usage. Still, TDR measurements are time-consuming and only cover small scales, leading to many locations being unsampled. Remotely sensed data such as the normalized difference vegetation index (NDVI) offer the …
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The Water Table and Soil Moisture Response Following the Removal of Conifers from an Encroached Meadow
… meadow (Marian Meadow) has an effect on soil moisture and groundwater depth such that meadow hydrologic conditions are promoted. This goal will be accomplished by the following objectives: 1) develop a water budget incorporating groundwater depth, soil moisture, and climate measurements to …
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Validation of FWD Testing Results at the Virginia Smart Road: Theoretically and by Instrument Responses
… strain gages, thermocouples, frost probes and moisture sensors. To validate the backcalculated moduli theoretically and through instrument response, this research was conducted with following objectives: 1) to determine the resilient moduli of the unbound granular materials on the Virginia …
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Mechanistic-Empirical Pavement Design Procedure For Geosynthetically Stabilized Flexible Pavements
… with strain gages, pressure cells, piezoelectric sensors, thermocouples, and moisture sensors. Section performances based on the instrumentation response to control and normal vehicular loading indicated that geosynthetic stabilization provided significant improvement in pavement performance. …
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The Water Table, Soil Moisture and Evapotranspiration Conditions Following the Removal of Conifers from Two Encroached Meadows
… on depth to the groundwater table (WTD) and soil moisture content (SMC), and to investigate the accuracy and potential usefulness of evapotranspiration (ET) calculation methodologies for montane meadows. This goal will be accomplished by the subsequent objectives: 1) perform an analysis of WTD and …
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Data-driven modeling of hydroclimatic trends and soil moisture: multi-scale data integration and decision support
… system is tested with a physically-based soil moisture model calibrated at several locations throughout the continental United States. The soil moisture model is calibrated at a given site and then applied with the same parameters at other sites within and outside the same hydroclimatic class. …
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Producer Preferences for Alternative Irrigation Practices in the Arkansas Delta
<p>We use a bivariate sample selection model to address peer network effects on participation in and/or intensity of use of land being irrigated by alternative irrigation practices in the state of Arkansas. As groundwater in the state becomes more limited, the use of scientific scheduling, …