subject:(moisture)

1. Claflin, Amy Elizabeth. Rapid Determination of Moisture and Fat in Meats By Microwave And Nuclear Magnetic Resonance Analysis.

Degree: 2013, Texas Digital Library

URL: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66559

► Determination of moisture, fat, protein, and other components of meat is important for the evaluation of the quality of raw materials and finished products, the… (more)

▼ Determination of moisture, fat, protein, and other components of meat is important for the evaluation of the quality of raw materials and finished products, the assessment of process control, and for ensuring regulatory compliance of meat products. Standard methods of analysis may be time- or labor-intensive, expensive, potentially harmful to the user or environment, or may require advanced training for operation of analytical equipment, but technology has allowed the introduction of more rapid methods that require less time, labor, skill, and cost. Microwave drying and nuclear magnetic resonance technologies for the determination of moisture and fat in meat products, respectively, have been incorporated into the CEM Smart Trac 5 System??, an instrument designed for the rapid analysis of moisture and fat in various food products. The CEM Smart Trac 5 System??, approved as an AOAC Peer Verified Method, was used in a collaborative study for the rapid determination of moisture and fat in a variety of raw and processed meat products of beef, pork, chicken, and turkey origin. The objective of the study was to determine if the CEM Smart Trac 5 System?? could analyze moisture and fat in meat products with the same accuracy and precision as standard methods of analysis as specified by the Association of Official Analytical Chemists (AOAC). Meat products were obtained from various commercial sources, homogenized, and distributed to 10 collaborative laboratories. Each collaborative laboratory evaluated the fat and moisture content of each meat product samples provided using the CEM Smart Trac 5 System??. Two standard methods of analysis, Forced Air Drying Method (AOAC Official Method 950.46) and Soxhlet Extraction of Crude Fat (AOAC Official Method 960.39), were performed on each sample for comparison to the Smart Trac 5 System??. Ten replicates were analyzed by the reference methods to achieve an analytical variance of no more than + 2%. Data collected from the reference methods for moisture (AOAC 950.46) and fat (AOAC 960.39) were used for the calibration of each of the CEM Smart Trac 5 Systems?? and for comparison to the results produced by the Smart Trac 5 System?? in each of the collaborative laboratories. The results indicated that the CEM Smart Trac 5 System?? compares favorably with the AOAC methods for moisture and fat determination. The CEM Smart Trac 5 System?? would be suitable for the rapid determination of moisture and fat in a variety of commercially produced raw and processed meat and poultry products. Statistical analysis confirmed the within-laboratory repeatability qualities of AOAC methods and provided a baseline for comparing the between-laboratory reproducibility potential of the CEM Smart Trac 5 System??. For all samples evaluated, the within-laboratory (repeatability) results and between-laboratory (reproducibility) results for moisture were acceptable. With the exception of low-fat ham, diluted low-fat ham, low-fat pork, diluted low-fat pork, diluted low-fat chicken, low-fat… Advisors/Committee Members: Keeton, Jimmy T (advisor).

Subjects/Keywords: Moisture determination

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APA (6^th Edition):

Claflin, A. E. (2013). Rapid Determination of Moisture and Fat in Meats By Microwave And Nuclear Magnetic Resonance Analysis. (Thesis). Texas Digital Library. Retrieved from http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66559

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Claflin, Amy Elizabeth. “Rapid Determination of Moisture and Fat in Meats By Microwave And Nuclear Magnetic Resonance Analysis.” 2013. Thesis, Texas Digital Library. Accessed January 16, 2021. http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66559.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Claflin, Amy Elizabeth. “Rapid Determination of Moisture and Fat in Meats By Microwave And Nuclear Magnetic Resonance Analysis.” 2013. Web. 16 Jan 2021.

Vancouver:

Claflin AE. Rapid Determination of Moisture and Fat in Meats By Microwave And Nuclear Magnetic Resonance Analysis. [Internet] [Thesis]. Texas Digital Library; 2013. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66559.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Claflin AE. Rapid Determination of Moisture and Fat in Meats By Microwave And Nuclear Magnetic Resonance Analysis. [Thesis]. Texas Digital Library; 2013. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66559

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

2. Shakiba, Maryam. A Continuum Coupled Moisture-mechanical Constitutive Model for Asphalt Concrete.

Degree: 2013, Texas Digital Library

URL: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66856

► The presence and flow of moisture degrade engineering properties of asphalt concrete as part of thermodynamic, chemical, physical, and mechanical processes. This detrimental effect is… (more)

▼ The presence and flow of moisture degrade engineering properties of asphalt concrete as part of thermodynamic, chemical, physical, and mechanical processes. This detrimental effect is referred to as moisture damage. The aim of this dissertation is the development of physically based constitutive relationships along with a computational tool for the fundamental analysis of combined mechanical and moisture induced damage of asphalt concrete. Such a tool can greatly contribute to an improved material selection procedure and give insight into the various damage inducing mechanisms in asphalt concrete. In this dissertation, thermo-hygro-mechanical constitutive relationships are developed based on the principle of virtual power and laws of thermodynamics in order to simulate moisture-induced damage of asphalt concrete. An evolution function is proposed to consider the detrimental effect of moisture diffusion and presence inside the material. The effect of pore water pressure is incorporated using Biot???s coefficient. The Continuum Damage Mechanics (CDM) theory is extended to Continuum Moisture-Mechanical Damage Mechanics (CMMDM) to incorporate the moisture degradation effect and couple it to the mechanical response of asphalt concrete. The proposed moisture damage constitutive relationships are implemented in the Pavement Analysis using Nonlinear Damage Approach (PANDA) finite element (FE) package to model the moisture damage effect on the complex environmental-mechanical response of asphalt concrete. The developed constitutive relationship and framework are validated over different loading scenarios and a range of experimental measurements. The developed constitutive relationship and framework are applied to simulate pavement performance. The focus is on investigating the effects of various moisture conditioning periods on permanent deformation (rutting) and fatigue damage of asphalt pavements. The constitutive and computational models are used to develop a framework for the simulation of the effect of moisture on the microstructural response of asphalt concrete. This framework explicitly incorporates the material microstructural distribution and properties. The developed framework is used to perform two-dimensional (2D) and three-dimensional (3D) micromechanical simulations in order to study and investigate the capability of the proposed constitutive relationships to predict the microstructural response of asphalt concrete under combined effect of moisture diffusion and mechanical loading. Advisors/Committee Members: Little, Dallas (advisor).

Subjects/Keywords: Moisture Damage

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APA (6^th Edition):

Shakiba, M. (2013). A Continuum Coupled Moisture-mechanical Constitutive Model for Asphalt Concrete. (Thesis). Texas Digital Library. Retrieved from http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66856

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Shakiba, Maryam. “A Continuum Coupled Moisture-mechanical Constitutive Model for Asphalt Concrete.” 2013. Thesis, Texas Digital Library. Accessed January 16, 2021. http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66856.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Shakiba, Maryam. “A Continuum Coupled Moisture-mechanical Constitutive Model for Asphalt Concrete.” 2013. Web. 16 Jan 2021.

Vancouver:

Shakiba M. A Continuum Coupled Moisture-mechanical Constitutive Model for Asphalt Concrete. [Internet] [Thesis]. Texas Digital Library; 2013. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66856.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Shakiba M. A Continuum Coupled Moisture-mechanical Constitutive Model for Asphalt Concrete. [Thesis]. Texas Digital Library; 2013. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66856

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Central Connecticut State University

3. Warchol, Anna Z., 1980-. Soil Moisture Characteristic due to Density Changes : Measurements and Predictions applying the RETC Computer Program.

Degree: Department of Engineering Technology, 2015, Central Connecticut State University

URL: http://content.library.ccsu.edu/u?/ccsutheses,2219

►

A series of seven hanging column tests were conducted at Central Connecticut State University (CCSU) on a two soil samples collected from Southington, CT and… (more)

Subjects/Keywords: Soil moisture.

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APA (6^th Edition):

Warchol, Anna Z., 1. (2015). Soil Moisture Characteristic due to Density Changes : Measurements and Predictions applying the RETC Computer Program. (Thesis). Central Connecticut State University. Retrieved from http://content.library.ccsu.edu/u?/ccsutheses,2219

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Warchol, Anna Z., 1980-. “Soil Moisture Characteristic due to Density Changes : Measurements and Predictions applying the RETC Computer Program.” 2015. Thesis, Central Connecticut State University. Accessed January 16, 2021. http://content.library.ccsu.edu/u?/ccsutheses,2219.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Warchol, Anna Z., 1980-. “Soil Moisture Characteristic due to Density Changes : Measurements and Predictions applying the RETC Computer Program.” 2015. Web. 16 Jan 2021.

Vancouver:

Warchol, Anna Z. 1. Soil Moisture Characteristic due to Density Changes : Measurements and Predictions applying the RETC Computer Program. [Internet] [Thesis]. Central Connecticut State University; 2015. [cited 2021 Jan 16]. Available from: http://content.library.ccsu.edu/u?/ccsutheses,2219.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Warchol, Anna Z. 1. Soil Moisture Characteristic due to Density Changes : Measurements and Predictions applying the RETC Computer Program. [Thesis]. Central Connecticut State University; 2015. Available from: http://content.library.ccsu.edu/u?/ccsutheses,2219

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

4. Halley, Chelsea Jenna. Laboratory calibration of the CS655 soil moisture sensor.

Degree: MSin Energy and Earth Resources, Energy and Earth Resources, 2016, University of Texas – Austin

URL: http://hdl.handle.net/2152/65481

► Calibration of a frequency domain reflectometer (model CS655, Campbell Scientific, Inc. Logan, UT) is presented using five distinct soil types and three different calibration methods.… (more)

▼ Calibration of a frequency domain reflectometer (model CS655, Campbell Scientific, Inc. Logan, UT) is presented using five distinct soil types and three different calibration methods. Frequency domain reflectometers estimate soil water content (SWC) using electromagnetic properties of the surrounding media. Few, if any, sensors directly measure volumetric water content. Instead, a sensor’s output must be converted either by a universal or a user-specific calibration equation. These sensors are used for a variety of applications using a factory-supplied equation with an error of 0.03 m³m⁻³. Soil specific properties such as clay content and salinity can affect their performance in field situations. A site or soil specific calibration can provide more accurate measurements albeit at greater time and expense. For this research, three calibration methods on five central Texas soils were evaluated to determine soil-specific calibration equations. First, a standard calibration method was performed by packing soil cores with soil at progressively higher SWC, inserting the probe vertically, and taking repeated measurements. Next, an upward infiltration method was used to slowly introduce water at the bottom of the soil core performed on soil cores with vertically inserted probes. Lastly, a downward infiltration method was performed by introducing known amounts of water to the top of the soil core with a vertically inserted probe and allowing infiltration and redistribution between subsequent water additions. The data from all three methods were fitted to a third-order polynomial, based on the relationship between the dielectric permittivity and the SWC. Overall, the CS655 performance across all five soils improved from a root mean square error (RMSE) of 0.065 and 0.042 m³m⁻³ using standard and downward calibrations, respectively, to 0.026 and 0.024 m³m⁻³ using a site-wide calibration. Results further indicate that the soil-specific calibration curves provide better fits than the commonly-used Topp’s equation, and that the coefficients in the soil-specific curve differ significantly (p<0.05). The research presented here improves our understanding of the CS655 sensor, and the calibration curve needed to improve field-based measurements currently occurring across the Texas Soil Observation Network. Advisors/Committee Members: Young, Michael H. (advisor), Caldwell, Todd G. (advisor), Kreitler, Charles (committee member).

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Halley, C. J. (2016). Laboratory calibration of the CS655 soil moisture sensor. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/65481

Chicago Manual of Style (16^th Edition):

Halley, Chelsea Jenna. “Laboratory calibration of the CS655 soil moisture sensor.” 2016. Masters Thesis, University of Texas – Austin. Accessed January 16, 2021. http://hdl.handle.net/2152/65481.

MLA Handbook (7^th Edition):

Halley, Chelsea Jenna. “Laboratory calibration of the CS655 soil moisture sensor.” 2016. Web. 16 Jan 2021.

Vancouver:

Halley CJ. Laboratory calibration of the CS655 soil moisture sensor. [Internet] [Masters thesis]. University of Texas – Austin; 2016. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/2152/65481.

Council of Science Editors:

Halley CJ. Laboratory calibration of the CS655 soil moisture sensor. [Masters Thesis]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/65481

Oregon State University

5. Belart Lengerich, Maria Francisca. Forest Harvest Residue Moisture Management in the Pacific Northwest, USA.

Degree: PhD, Sustainable Forest Management, 2016, Oregon State University

URL: http://hdl.handle.net/1957/59544

► Moisture content management is a key requirement to improve forest harvest residue economics for bioenergy production. This dissertation aims to contribute towards better management through… (more)

▼ Moisture content management is a key requirement to improve forest harvest residue economics for bioenergy production. This dissertation aims to contribute towards better management through these three general objectives (1) Determine average moisture content of fresh forest harvest residues and its changes over the different seasons of the year, focusing on the three main commercial forest species growing in the Pacific Northwest, (2) Determine in-forest stored drying rates of this material for two harvest systems and the same species specified in objective (1) and (3) Determine the cost effectiveness of in-forest drying for two harvest systems and the advantages of drier material when its energy content is considered at a cogeneration facility. A repeated measures experimental design was conducted to determine average branch moisture content in live trees during each season of the year in four different locations in Oregon. At the same time, an innovative sampling protocol was employed to determine moisture content for in-forest stored of piled and scattered harvest residues for one year in four different Oregon sites. These data were used to calibrate finite element analysis (FEA) models to predict residue drying rates based on weather information such as temperature, relative humidity, precipitation and wind velocity. Finally, one of the FEA models was used to determine drying rates on real Douglas-fir units harvested with different harvest systems (a case study). These harvest units were employed to set a mixed integer linear program to optimally deliver harvest residues to a hypothetical cogeneration plant over 24 periods (months) and determine processing and transport costs. Major findings indicate that from all sites, the highest moisture recorded was 50% (wet basis) in ponderosa pine during the winter; the lowest was 43% in the summer for both the same ponderosa pine and Willamette Valley Douglas-fir. When compared by season, ponderosa pine had significantly higher moisture content in the winter than in other seasons (1.6 to 9.8% higher). Summer moisture content was also significantly lower than fall moisture content for ponderosa pine (5.4 to 2.5% lower). Willamette Valley Douglas-fir had significantly lower moisture content during summer than during other seasons (0.8 to 3.9% lower). FEA models were successfully developed to determine drying rates for four different climate regions in Oregon. These models were compared with data obtained in the field and statistical tests show model agreement with correlations between 0.56 and 0.92 (Kendall’s tau) on all sites. The harvest residue generated from the case study was sufficient to optimally deliver the necessary volume to supply 63% of a hypothetical 6 MW-hr cogeneration plant. Approximately 98% of the harvest residue generated with cable logging system was delivered to the plant compared with only 56% of the residue generated with a ground-based system. By considering the energy content of drier residues, the amount of ODMT needed to supply the plant… Advisors/Committee Members: Sessions, John (advisor), Madsen, Lisa (committee member).

Subjects/Keywords: Moisture content; Slash (Logging) – Moisture – Northwest, Pacific

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APA (6^th Edition):

Belart Lengerich, M. F. (2016). Forest Harvest Residue Moisture Management in the Pacific Northwest, USA. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/59544

Chicago Manual of Style (16^th Edition):

Belart Lengerich, Maria Francisca. “Forest Harvest Residue Moisture Management in the Pacific Northwest, USA.” 2016. Doctoral Dissertation, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/59544.

MLA Handbook (7^th Edition):

Belart Lengerich, Maria Francisca. “Forest Harvest Residue Moisture Management in the Pacific Northwest, USA.” 2016. Web. 16 Jan 2021.

Vancouver:

Belart Lengerich MF. Forest Harvest Residue Moisture Management in the Pacific Northwest, USA. [Internet] [Doctoral dissertation]. Oregon State University; 2016. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/59544.

Council of Science Editors:

Belart Lengerich MF. Forest Harvest Residue Moisture Management in the Pacific Northwest, USA. [Doctoral Dissertation]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/59544

Montana Tech

6. Johnson, Adam Collier. Controls on the Spatial-temporal distribution of soil moisture under snow dominated conditions in a naturally vegetated, sub-alpine mountain catchment.

Degree: MS, 2012, Montana Tech

URL: https://scholarworks.umt.edu/etd/1371

► Soil moisture processes in the top soil is a pivotal element in the terrestrial phase of the hydrologic cycle over a wide range of scales.… (more)

▼ Soil moisture processes in the top soil is a pivotal element in the terrestrial phase of the hydrologic cycle over a wide range of scales. At the plot scale, soil moisture exerts a strong control on runoff, evapotranspiration, and the transfer of water to deeper soil levels and aquifers. It affects the heat capacity of the soil and determines important ecological and geochemical processes such as the distribution of soil microbial communities, mineralization rates or soil respiration. The mechanisms that control soil moisture dynamics are controversial, varying for different regions and scales. Most understanding comes from research on water-limited systems that may not be applicable in snow-driven systems. This study presents a field investigation on the dynamics that control the distribution of soil moisture at the plot scale in a snow-dominated sub-alpine catchment. The research experimentally validates previous modeling studies and determines whether evapotranspiration (extractive, energy-driven controls) is the main generator of soil moisture heterogeneity vs. differential snowmelt (additive control). The field study site, located in the Bitterroot Mountains, Montana, is instrumented with soil moisture/temperature sensors, meteorological station, and sap flux system monitoring an Engelmann Spruce. Results show that the highest heterogeneity in moisture occurs at intermediate water contents resulting from the spring snowmelt driven wetting process while the lowest heterogeneity occurs at the early fall conclusion of the drying season. The presence of the tree canopy alters the spatial distribution of precipitation and snowmelt and results in a dampening of weather induced soil moisture variability under canopies in comparison to open areas. We show that spatial distribution of precipitation and snowmelt (additive processes) are a stronger control on the generation of heterogeneity in soil moisture than evapotranspiration (extractive processes) in a snow dominated environment.

Subjects/Keywords: soil moisture; soil moisture distribution; soil water

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APA (6^th Edition):

Johnson, A. C. (2012). Controls on the Spatial-temporal distribution of soil moisture under snow dominated conditions in a naturally vegetated, sub-alpine mountain catchment. (Masters Thesis). Montana Tech. Retrieved from https://scholarworks.umt.edu/etd/1371

Chicago Manual of Style (16^th Edition):

Johnson, Adam Collier. “Controls on the Spatial-temporal distribution of soil moisture under snow dominated conditions in a naturally vegetated, sub-alpine mountain catchment.” 2012. Masters Thesis, Montana Tech. Accessed January 16, 2021. https://scholarworks.umt.edu/etd/1371.

MLA Handbook (7^th Edition):

Johnson, Adam Collier. “Controls on the Spatial-temporal distribution of soil moisture under snow dominated conditions in a naturally vegetated, sub-alpine mountain catchment.” 2012. Web. 16 Jan 2021.

Vancouver:

Johnson AC. Controls on the Spatial-temporal distribution of soil moisture under snow dominated conditions in a naturally vegetated, sub-alpine mountain catchment. [Internet] [Masters thesis]. Montana Tech; 2012. [cited 2021 Jan 16]. Available from: https://scholarworks.umt.edu/etd/1371.

Council of Science Editors:

Johnson AC. Controls on the Spatial-temporal distribution of soil moisture under snow dominated conditions in a naturally vegetated, sub-alpine mountain catchment. [Masters Thesis]. Montana Tech; 2012. Available from: https://scholarworks.umt.edu/etd/1371

Oklahoma State University

7. Jayathunga Mudiyanselage, Lahiru. Effect of moisture level in plate thermometer insulation on the measurement of incident radiant heat flux.

Degree: Engineering Technology, 2020, Oklahoma State University

URL: http://hdl.handle.net/11244/325547

► The purpose of the current study was to elucidate the fluctuations of calculated heat fluxes based on two independent conditions of the insulation layers of… (more)

Subjects/Keywords: equilibrium moisture content (emc); moisture content; moisture in insulation; plate thermometer; wood moisture equivalent (wme)

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APA (6^th Edition):

Jayathunga Mudiyanselage, L. (2020). Effect of moisture level in plate thermometer insulation on the measurement of incident radiant heat flux. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/325547

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jayathunga Mudiyanselage, Lahiru. “Effect of moisture level in plate thermometer insulation on the measurement of incident radiant heat flux.” 2020. Thesis, Oklahoma State University. Accessed January 16, 2021. http://hdl.handle.net/11244/325547.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jayathunga Mudiyanselage, Lahiru. “Effect of moisture level in plate thermometer insulation on the measurement of incident radiant heat flux.” 2020. Web. 16 Jan 2021.

Vancouver:

Jayathunga Mudiyanselage L. Effect of moisture level in plate thermometer insulation on the measurement of incident radiant heat flux. [Internet] [Thesis]. Oklahoma State University; 2020. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/11244/325547.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jayathunga Mudiyanselage L. Effect of moisture level in plate thermometer insulation on the measurement of incident radiant heat flux. [Thesis]. Oklahoma State University; 2020. Available from: http://hdl.handle.net/11244/325547

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Massey University

8. Holmes, Wayne S. Lumber moisture measurement using a six-port reflectometer and waveguide aperture array : a thesis submitted in fulfilment of the requirements for the degree of Master of Engineering, Massey University .

Degree: 2013, Massey University

URL: http://hdl.handle.net/10179/4707

► This Thesis covers the development of a six-port and slotted waveguide based measurement system for the determination of the variation of moisture content (mc) of… (more)

Subjects/Keywords: Waveguide; Lumber moisture content; Timber moisture content; Wood moisture content; Reflectometer; Six-port reflectometer; Permittivity

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APA (6^th Edition):

Holmes, W. S. (2013). Lumber moisture measurement using a six-port reflectometer and waveguide aperture array : a thesis submitted in fulfilment of the requirements for the degree of Master of Engineering, Massey University . (Thesis). Massey University. Retrieved from http://hdl.handle.net/10179/4707

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Holmes, Wayne S. “Lumber moisture measurement using a six-port reflectometer and waveguide aperture array : a thesis submitted in fulfilment of the requirements for the degree of Master of Engineering, Massey University .” 2013. Thesis, Massey University. Accessed January 16, 2021. http://hdl.handle.net/10179/4707.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Holmes, Wayne S. “Lumber moisture measurement using a six-port reflectometer and waveguide aperture array : a thesis submitted in fulfilment of the requirements for the degree of Master of Engineering, Massey University .” 2013. Web. 16 Jan 2021.

Vancouver:

Holmes WS. Lumber moisture measurement using a six-port reflectometer and waveguide aperture array : a thesis submitted in fulfilment of the requirements for the degree of Master of Engineering, Massey University . [Internet] [Thesis]. Massey University; 2013. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10179/4707.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Holmes WS. Lumber moisture measurement using a six-port reflectometer and waveguide aperture array : a thesis submitted in fulfilment of the requirements for the degree of Master of Engineering, Massey University . [Thesis]. Massey University; 2013. Available from: http://hdl.handle.net/10179/4707

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

9. Jibury, Falih Khidir. Variations of moisture retention properties and bulk densities of soils between and within soil-mapping units in central Oregon.

Degree: MS, Soils, 1958, Oregon State University

URL: http://hdl.handle.net/1957/10026

► The objective of this study was to estimate the bulk densities and points on the moisture-tension curves and to determine their associated variances for some… (more)

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Jibury, F. K. (1958). Variations of moisture retention properties and bulk densities of soils between and within soil-mapping units in central Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/10026

Chicago Manual of Style (16^th Edition):

Jibury, Falih Khidir. “Variations of moisture retention properties and bulk densities of soils between and within soil-mapping units in central Oregon.” 1958. Masters Thesis, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/10026.

MLA Handbook (7^th Edition):

Jibury, Falih Khidir. “Variations of moisture retention properties and bulk densities of soils between and within soil-mapping units in central Oregon.” 1958. Web. 16 Jan 2021.

Vancouver:

Jibury FK. Variations of moisture retention properties and bulk densities of soils between and within soil-mapping units in central Oregon. [Internet] [Masters thesis]. Oregon State University; 1958. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/10026.

Council of Science Editors:

Jibury FK. Variations of moisture retention properties and bulk densities of soils between and within soil-mapping units in central Oregon. [Masters Thesis]. Oregon State University; 1958. Available from: http://hdl.handle.net/1957/10026

Oregon State University

10. Chen, Tsu-fang. The effect of soil moisture tension on the transpiration rate of a young sunflower when irrigated by a condensation method.

Degree: MS, Agricultural Engineering, 1958, Oregon State University

URL: http://hdl.handle.net/1957/20200

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Chen, T. (1958). The effect of soil moisture tension on the transpiration rate of a young sunflower when irrigated by a condensation method. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/20200

Chicago Manual of Style (16^th Edition):

Chen, Tsu-fang. “The effect of soil moisture tension on the transpiration rate of a young sunflower when irrigated by a condensation method.” 1958. Masters Thesis, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/20200.

MLA Handbook (7^th Edition):

Chen, Tsu-fang. “The effect of soil moisture tension on the transpiration rate of a young sunflower when irrigated by a condensation method.” 1958. Web. 16 Jan 2021.

Vancouver:

Chen T. The effect of soil moisture tension on the transpiration rate of a young sunflower when irrigated by a condensation method. [Internet] [Masters thesis]. Oregon State University; 1958. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/20200.

Council of Science Editors:

Chen T. The effect of soil moisture tension on the transpiration rate of a young sunflower when irrigated by a condensation method. [Masters Thesis]. Oregon State University; 1958. Available from: http://hdl.handle.net/1957/20200

Oregon State University

11. Guo, Ning. Hygro-mechanical response of clear softwood specimens to compression under cyclic climate.

Degree: MS, Wood Science, 2009, Oregon State University

URL: http://hdl.handle.net/1957/13072

► Hygro-mechanical effect is a general term applied to all phenomena that involves interaction between moisture content and mechanical characteristics of hygroscopic materials by analogy to… (more)

▼ Hygro-mechanical effect is a general term applied to all phenomena that involves interaction between moisture content and mechanical characteristics of hygroscopic materials by analogy to thermo-mechanical effects. The hygromechanical effects include (but are not limited to) free shrinkage/swelling, effect of moisture on elastic modulus, strength, creep, failure mechanisms, and mechano sorption. Of those, the particular focus of this project was the mechano-sorptive effect, which is observed as an additional deformation when wooden materials are exposed to combined mechanical loading and moisture content changes. The principle objective of this research program is to create a systematic database of clearly defined hygro-mechanical characteristics for commonly used wood species. Such database is needed for accurate modeling and prediction of long-term behavior of wood and wood-based materials in structures exposed to changing environment. The specimens in this program included four softwood species: Red spruce, Douglas fir, Western hemlock and Ponderosa pine. In this project, small longitudinal specimens were exposed to compression stress along the longitudinal axis (16-22% of the ultimate compressive stress) at room temperature (about 22±1° C) and varying moisture contents (MC). Cyclic changes of MC were executed in a small climate chamber by varying the relative humidity (RH) between 90% and lower RH (40%-50%). Free shrinkage and swelling was measured on unloaded reference specimens exposed to the same conditions. In a separate reference test series, specimens were subjected to sustained compressive load at a constant humidity of 65%, in order to determine the effect of visco-elastic deformation. Some specimens for this reference tests were wrapped in Parafilm in order to protect them from even small variations of the ambient humidity. All deformations were measured by comparing successive digital images of the specimens using digital image correlation (DIC) software. The mechano-sorptive deformation characteristics were calculated by subtracting the free swelling/shrinkage and visco-elastic deformation determined on the reference specimens and specimens tested in constant humidity, respectively, from the total deformation measured on the loaded specimens tested in cyclic climate. Apart from the mechano-sorptive characteristics, the output of the test protocol included: 1) free shrinkage/swelling coefficients for longitudinal and radial directions, determined on reference specimens; and 2) elastic modulus for compression in longitudinal direction and related Poisson ratios. Advisors/Committee Members: Muszynski, Lech (advisor), Kamke, Fred (committee member).

Subjects/Keywords: hygro-mechanical effect; Pinaceae – Moisture

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APA (6^th Edition):

Guo, N. (2009). Hygro-mechanical response of clear softwood specimens to compression under cyclic climate. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/13072

Chicago Manual of Style (16^th Edition):

Guo, Ning. “Hygro-mechanical response of clear softwood specimens to compression under cyclic climate.” 2009. Masters Thesis, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/13072.

MLA Handbook (7^th Edition):

Guo, Ning. “Hygro-mechanical response of clear softwood specimens to compression under cyclic climate.” 2009. Web. 16 Jan 2021.

Vancouver:

Guo N. Hygro-mechanical response of clear softwood specimens to compression under cyclic climate. [Internet] [Masters thesis]. Oregon State University; 2009. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/13072.

Council of Science Editors:

Guo N. Hygro-mechanical response of clear softwood specimens to compression under cyclic climate. [Masters Thesis]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/13072

Technical University of Lisbon

12. Pinto, Ana Rita Marques. Avaliação do processo de secagem no fabrico de malte: caso de estudo da Sociedade Central de Cervejas e Bebidas, SA.

Degree: 2013, Technical University of Lisbon

URL: https://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/5678

►

Mestrado em Engenharia Alimentar - Processamento de Alimentos - Instituto Superior de Agronomia

In beer production, barley grains are previously converted into malt. During malting,… (more)

Subjects/Keywords: barley; malt; malting; kilning; moisture

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APA (6^th Edition):

Pinto, A. R. M. (2013). Avaliação do processo de secagem no fabrico de malte: caso de estudo da Sociedade Central de Cervejas e Bebidas, SA. (Thesis). Technical University of Lisbon. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/5678

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pinto, Ana Rita Marques. “Avaliação do processo de secagem no fabrico de malte: caso de estudo da Sociedade Central de Cervejas e Bebidas, SA.” 2013. Thesis, Technical University of Lisbon. Accessed January 16, 2021. https://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/5678.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pinto, Ana Rita Marques. “Avaliação do processo de secagem no fabrico de malte: caso de estudo da Sociedade Central de Cervejas e Bebidas, SA.” 2013. Web. 16 Jan 2021.

Vancouver:

Pinto ARM. Avaliação do processo de secagem no fabrico de malte: caso de estudo da Sociedade Central de Cervejas e Bebidas, SA. [Internet] [Thesis]. Technical University of Lisbon; 2013. [cited 2021 Jan 16]. Available from: https://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/5678.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pinto ARM. Avaliação do processo de secagem no fabrico de malte: caso de estudo da Sociedade Central de Cervejas e Bebidas, SA. [Thesis]. Technical University of Lisbon; 2013. Available from: https://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/5678

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

13. Chinn, Clarence Edward. Techniques for evaluating certain physical properties of soil moisture.

Degree: PhD, Soils, 1956, Oregon State University

URL: http://hdl.handle.net/1957/51000

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Chinn, C. E. (1956). Techniques for evaluating certain physical properties of soil moisture. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/51000

Chicago Manual of Style (16^th Edition):

Chinn, Clarence Edward. “Techniques for evaluating certain physical properties of soil moisture.” 1956. Doctoral Dissertation, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/51000.

MLA Handbook (7^th Edition):

Chinn, Clarence Edward. “Techniques for evaluating certain physical properties of soil moisture.” 1956. Web. 16 Jan 2021.

Vancouver:

Chinn CE. Techniques for evaluating certain physical properties of soil moisture. [Internet] [Doctoral dissertation]. Oregon State University; 1956. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/51000.

Council of Science Editors:

Chinn CE. Techniques for evaluating certain physical properties of soil moisture. [Doctoral Dissertation]. Oregon State University; 1956. Available from: http://hdl.handle.net/1957/51000

Oregon State University

14. Abd El-Samie, Ahmed Gamal. Determination of irrigation frequencies and amounts by soil moisture sampling and gypsum electrical resistance blocks.

Degree: PhD, Soils, 1953, Oregon State University

URL: http://hdl.handle.net/1957/51365

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Abd El-Samie, A. G. (1953). Determination of irrigation frequencies and amounts by soil moisture sampling and gypsum electrical resistance blocks. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/51365

Chicago Manual of Style (16^th Edition):

Abd El-Samie, Ahmed Gamal. “Determination of irrigation frequencies and amounts by soil moisture sampling and gypsum electrical resistance blocks.” 1953. Doctoral Dissertation, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/51365.

MLA Handbook (7^th Edition):

Abd El-Samie, Ahmed Gamal. “Determination of irrigation frequencies and amounts by soil moisture sampling and gypsum electrical resistance blocks.” 1953. Web. 16 Jan 2021.

Vancouver:

Abd El-Samie AG. Determination of irrigation frequencies and amounts by soil moisture sampling and gypsum electrical resistance blocks. [Internet] [Doctoral dissertation]. Oregon State University; 1953. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/51365.

Council of Science Editors:

Abd El-Samie AG. Determination of irrigation frequencies and amounts by soil moisture sampling and gypsum electrical resistance blocks. [Doctoral Dissertation]. Oregon State University; 1953. Available from: http://hdl.handle.net/1957/51365

Oregon State University

15. Peebler, Francis Eugene. The effect of organic matter on "available soil water ".

Degree: MS, Soils, 1941, Oregon State University

URL: http://hdl.handle.net/1957/53655

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Peebler, F. E. (1941). The effect of organic matter on "available soil water ". (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/53655

Chicago Manual of Style (16^th Edition):

Peebler, Francis Eugene. “The effect of organic matter on "available soil water ".” 1941. Masters Thesis, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/53655.

MLA Handbook (7^th Edition):

Peebler, Francis Eugene. “The effect of organic matter on "available soil water ".” 1941. Web. 16 Jan 2021.

Vancouver:

Peebler FE. The effect of organic matter on "available soil water ". [Internet] [Masters thesis]. Oregon State University; 1941. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/53655.

Council of Science Editors:

Peebler FE. The effect of organic matter on "available soil water ". [Masters Thesis]. Oregon State University; 1941. Available from: http://hdl.handle.net/1957/53655

Oregon State University

16. Mirzaei, Babak. Durability Assessment of Wood Composites Using Fracture Mechanics.

Degree: PhD, Wood Science, 2016, Oregon State University

URL: http://hdl.handle.net/1957/58419

► The advent of synthetic adhesives has transformed the structural applications of wood. However, a persistent issue in adhesively-bonded wood products has been moisture durability. When… (more)

▼ The advent of synthetic adhesives has transformed the structural applications of wood. However, a persistent issue in adhesively-bonded wood products has been moisture durability. When designing wood based composites, moisture durability will depend on both the wood phase and the adhesive phase. A key question, therefore, is how does one rank adhesives for their ability to convey moisture durability in wood composites? Typical wood-based composite tests for moisture durability assessments do not consider the post-peak load regime of the material or are merely qualitative. This research explores the suitability of crack propagation fracture experiments to develop new methodologies for durability assessment of wood composites and adhesives. Fracture resistance curves (R curves) were measured for solid wood Douglas-fir and laminated veneer lumber (LVL) made with Douglas-fir veneer and a variety wood adhesives, namely, polyvinyl acetate, phenol formaldehyde, emulsion polymer isocyanate and phenol resorcinol formaldehyde. The LVL and solid wood R curves were similar for initiation of fracture, but the LVL toughness rose much higher than solid wood. Because a rising R curve is caused by fiber bridging effects, these differences show that the LVL adhesive has a large effect on the fiber bridging process. This resin effect was exploited to develop a test method for characterizing the ability of a resin to provide wood composites that are durable to moisture exposure. In characterizing toughness changes, it was important to focus on the magnitude and rate of the toughness increase attributed to fiber bridging. A new method was developed for ranking the role of adhesives in the durability of wood-based composites by observing changes in fracture toughness during crack propagation following cyclic exposure to moisture conditions. This new approach was compared to conventional mechanical performance test methods, such as observing strength and stiffness loss after exposure. Comparing changes in fracture toughness as a function of crack length after moisture cycling shows that fracture-mechanics based methods can distinguish different adhesive systems on the basis of their durability, while conventional test methods do not have similar capability. Using steady-state toughness alone, the most and least durable adhesives (phenol formaldehyde and polyvinyl acetate) could be distinguished, but the performance of two other adhesives (emulsion polymer isocyanate and phenol resorcinol formaldehyde) could not. Further analysis of experimental R curves based on kinetics of degradation was able to rank all adhesives confidently and therefore provided the preferred method. The likely cause for the inability of conventional tests to rank adhesives is that they are based on initiation of failure while the fracture tests show that comparisons that can rank adhesives require consideration of fracture properties after a significant amount of crack propagation has occurred. Additionally, a new method was proposed for determining… Advisors/Committee Members: Sinha, Arijit (advisor), Kamke, Fred (committee member).

Subjects/Keywords: Wood composite; Engineered wood – Moisture

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APA (6^th Edition):

Mirzaei, B. (2016). Durability Assessment of Wood Composites Using Fracture Mechanics. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/58419

Chicago Manual of Style (16^th Edition):

Mirzaei, Babak. “Durability Assessment of Wood Composites Using Fracture Mechanics.” 2016. Doctoral Dissertation, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/58419.

MLA Handbook (7^th Edition):

Mirzaei, Babak. “Durability Assessment of Wood Composites Using Fracture Mechanics.” 2016. Web. 16 Jan 2021.

Vancouver:

Mirzaei B. Durability Assessment of Wood Composites Using Fracture Mechanics. [Internet] [Doctoral dissertation]. Oregon State University; 2016. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/58419.

Council of Science Editors:

Mirzaei B. Durability Assessment of Wood Composites Using Fracture Mechanics. [Doctoral Dissertation]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/58419

Texas A&M University

17. Fiaz Ahmed Rafi Ahmed, . Interactions between Tropical Convection and the Environment: A View across Scales.

Degree: PhD, Atmospheric Sciences, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/174279

► The interaction between moist convection and the environment that engenders it is a problem that spans multiple scales. In this study, the problem is approached… (more)

▼ The interaction between moist convection and the environment that engenders it is a problem that spans multiple scales. In this study, the problem is approached using a suite of observational and modeling tools. The first approach was the development of an algorithm to estimate latent heating profiles from radar observations using a high-resolution version of the Weather Research and Forecasting Model (WRF). A lookup table was constructed from WRF output to statistically quantify the relationship between latent heating and three characteristics of radar-observed storms: size, mean height and mean intensity. A tight link between organization (characterized by the size of the system) and the intensity (as measured by latent heat release) was found. The algorithm was validated against field campaign observations and shows skill in replicating the short-term (less than daily) variability associated with tropical synoptic systems. The second approach was to analyze the relationship between convection and the environment via moisture modulation using the Tropical Rain Measuring Mission satellite and reanalysis data, with focus on the tropical precipitation-water vapor relationship (P-r curve) which is a power-law relationship, which at the convective time and space scales is characterized by a sharp increase in precipitation beyond a critical value of moisture (the pickup threshold). The convective and stratiform components of the P-r relationship were studied separately and it was found that the pickup in tropical precipitation mainly originates from a rapid pickup in the areal extent of stratiform precipitation. A survey of the P-r curve across the tropical world–both land and ocean–shows that the pickup threshold is much lower over tropical land than over the ocean and that convective precipitation picks up prior to stratiform precipitation. Finally, the implications of a precipitation-moisture relationship were explored for prominent forms of organized convection in the tropics, i.e, tropical waves and the Madden-Julian Oscillation. It was found that the different sources of column moisture (horizontal transport and convection) were influential in environments with different moisture levels. These relationships are also dependent on the time and space scale of analysis. Advisors/Committee Members: Schumacher, Courtney (advisor), Saravanan, R. (committee member), Nielsen-Gammon, John (committee member), Raymond, Anne (committee member).

Subjects/Keywords: tropical convection; precipitation; moisture

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APA (6^th Edition):

Fiaz Ahmed Rafi Ahmed, .. (2016). Interactions between Tropical Convection and the Environment: A View across Scales. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/174279

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

Fiaz Ahmed Rafi Ahmed, .. “Interactions between Tropical Convection and the Environment: A View across Scales.” 2016. Doctoral Dissertation, Texas A&M University. Accessed January 16, 2021. http://hdl.handle.net/1969.1/174279.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

Fiaz Ahmed Rafi Ahmed, .. “Interactions between Tropical Convection and the Environment: A View across Scales.” 2016. Web. 16 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

Fiaz Ahmed Rafi Ahmed, .. Interactions between Tropical Convection and the Environment: A View across Scales. [Internet] [Doctoral dissertation]. Texas A&M University; 2016. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1969.1/174279.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

Fiaz Ahmed Rafi Ahmed, .. Interactions between Tropical Convection and the Environment: A View across Scales. [Doctoral Dissertation]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/174279

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Texas A&M University

18. Das, Narendra Narayan. Modeling and application of soil moisture at varying spatial scales with parameter scaling.

Degree: PhD, Biological and Agricultural Engineering, 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2877

► The dissertation focuses on characterization of subpixel variability within a satellite-based remotely sensed coarse-scale soil moisture footprint. The underlying heterogeneity of coarse-scale soil moisture footprint… (more)

▼ The dissertation focuses on characterization of subpixel variability within a satellite-based remotely sensed coarse-scale soil moisture footprint. The underlying heterogeneity of coarse-scale soil moisture footprint is masked by the area-integrated properties within the sensor footprint. Therefore, the soil moisture values derived from these measurements are an area average. The variability in soil moisture within the footprint is introduced by inherent spatial variability present in rainfall, and geophysical parameters (vegetation, topography, and soil). The geophysical parameters/variables typically interact in a complex fashion to make soil moisture evolution and dependent processes highly variable, and also, introduce nonlinearity across spatio-temporal scales. To study the variability and scaling characteristics of soil moisture, a quasi-distributed Soil-Vegetation-Atmosphere-Transfer (SVAT) modeling framework is developed to simulate the hydrological dynamics, i.e., the fluxes and the state variables within the satellite-based soil moisture footprint. The modeling framework is successfully tested and implemented in different hydroclimatic regions during the research. New multiscale data assimilation and Markov Chain Monte Carlo (MCMC) techniques in conjunction with the SVAT modeling framework are developed to quantify subpixel variability and assess multiscale soil moisture fields within the coarse-scale satellite footprint. Reasonable results demonstrate the potential to use these techniques to validate multiscale soil moisture data from future satellite mission e.g., Soil Moisture Active Passive (SMAP) mission of NASA. The results also highlight the physical controls of geophysical parameters on the soil moisture fields for various hydroclimatic regions. New algorithm that uses SVAT modeling framework is also proposed and its application demonstrated, to derive the stochastic soil hydraulic properties (i.e., saturated hydraulic conductivity) and surface features (i.e., surface roughness and volume scattering) related to radar remote sensing of soil moisture. Advisors/Committee Members: Mohanty, Binayak P. (advisor), Hetland, Robert (committee member), Singh, Vijay P. (committee member), Yalchin, Efendiev (committee member).

Subjects/Keywords: soil moisture

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APA (6^th Edition):

Das, N. N. (2009). Modeling and application of soil moisture at varying spatial scales with parameter scaling. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2877

Chicago Manual of Style (16^th Edition):

Das, Narendra Narayan. “Modeling and application of soil moisture at varying spatial scales with parameter scaling.” 2009. Doctoral Dissertation, Texas A&M University. Accessed January 16, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2877.

MLA Handbook (7^th Edition):

Das, Narendra Narayan. “Modeling and application of soil moisture at varying spatial scales with parameter scaling.” 2009. Web. 16 Jan 2021.

Vancouver:

Das NN. Modeling and application of soil moisture at varying spatial scales with parameter scaling. [Internet] [Doctoral dissertation]. Texas A&M University; 2009. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2877.

Council of Science Editors:

Das NN. Modeling and application of soil moisture at varying spatial scales with parameter scaling. [Doctoral Dissertation]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2877

Texas A&M University

19. Rana, Samagra. Designing a Modeling Framework for Estimating Soil Moisture in Heterogeneous Landscape.

Degree: MS, Biological and Agricultural Engineering, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/157052

► Soil moisture is an important component in many hydrologic and land– atmosphere interactions. Proper characterization of soil moisture variability is vital for understanding hydrological, ecological… (more)

▼ Soil moisture is an important component in many hydrologic and land– atmosphere interactions. Proper characterization of soil moisture variability is vital for understanding hydrological, ecological and biogeochemical processes. At the Darcy scale, root zone soil moisture variability can effectively be estimated by employing an accurate process based model. In this study, we used different conceptual soil-water flow models (single porosity and dual porosity) to predict soil moisture variability across the Little Washita watershed, Oklahoma. The soil hydraulic parameters (SHPs) for the models were estimated through inverse modeling of multi-step outflow experimental data from soil cores, collected during the Southern Great Plains (SGP) 1997 hydrology experiment, from various parts of the watershed. Single porosity, bimodal and dual porosity models were used to calculate SHPs. With the application of various soil water flow model, non-equilibrium effects and preferential flow were briefly discussed. The validity of different models is presented based on the landscape position (location) characteristics (soil, topography, vegetation, organic matter content) of the soil cores. Using calculated SHPs from various parts of the watershed, soil moisture was predicted using forward modeling from March 1997 to November 1997. Different combinations of soil texture, topography, vegetation and organic content influenced the soil hydraulic properties and in soil moisture prediction. For most of the soil samples, dual porosity model was able to capture the micro and macro heterogeneities better than Durner’s and single porosity model. But factors such as landscape position, organic matter and vegetation significantly contributed in predicting soil moisture. Our soil moisture predictions were validated with remotely sensed soil moisture values. Based on our validation, a combination modeling scheme is suggested for soil water model selection for various parts of the watershed. Advisors/Committee Members: Mohanty, Binayak (advisor), Cahill, Anthony (committee member), Smith, Patricia (committee member).

Subjects/Keywords: soil moisture; hydrology; vadose zone

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APA (6^th Edition):

Rana, S. (2016). Designing a Modeling Framework for Estimating Soil Moisture in Heterogeneous Landscape. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/157052

Chicago Manual of Style (16^th Edition):

Rana, Samagra. “Designing a Modeling Framework for Estimating Soil Moisture in Heterogeneous Landscape.” 2016. Masters Thesis, Texas A&M University. Accessed January 16, 2021. http://hdl.handle.net/1969.1/157052.

MLA Handbook (7^th Edition):

Rana, Samagra. “Designing a Modeling Framework for Estimating Soil Moisture in Heterogeneous Landscape.” 2016. Web. 16 Jan 2021.

Vancouver:

Rana S. Designing a Modeling Framework for Estimating Soil Moisture in Heterogeneous Landscape. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1969.1/157052.

Council of Science Editors:

Rana S. Designing a Modeling Framework for Estimating Soil Moisture in Heterogeneous Landscape. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/157052

Texas A&M University

20. Yuan, Shanshui. Assessment of Multiple Approaches for Using Soil Moisture to Evaluate Drought in the U.S. Great Plains.

Degree: PhD, Geography, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/159050

► Drought is a natural phenomenon induced by precipitation deficiency and it impacts economy, environment and society. The drought monitoring tools include direct measurements, such as… (more)

▼ Drought is a natural phenomenon induced by precipitation deficiency and it impacts economy, environment and society. The drought monitoring tools include direct measurements, such as precipitation, soil moisture and streamflow and indirect estimations, like drought indices and model simulations. The newly developed North American Soil Moisture Database (NASMD) provides quality-controlled soil moisture observations over the entire U.S. to help assess the reliability of these drought monitoring tools. In this dissertation study, we focused on the assessment of drought indices and model simulated soil moisture using in situ data from NASMD. First, we focused on four soil moisture statistics: percentile, trend, variability and persistence in 0-10 cm and 0-100 cm soil layers. The result reveals that the crop moisture index well represent the soil moisture conditions in the top 100 cm soil layer based on higher correlation, more similar trend, variability and persistence. In the top 10 cm soil layer, no drought index is the most appropriate one for all the statistics. In general, drought indices considering potential evapotranspiration (PET) are more appropriate for representing soil moisture in 0-10 cm soil layer. Then we developed a more realistic Palmer Drought Severity Index (PDSI) using two-source PET model. Based on the comparison with original PDSI and Penman-Monteith based PDSI, we found the choice of PET method would impact the spatial and temporal patterns of drought and the drought severity during extreme drought events. Thirdly, we tested the reduced optimal interpolation (ROI) method to soil moisture in Oklahoma and compared it with two geo-statistical interpolation methods: the inversed distance weighting (IDW) method and Cokriging method. The ROI method is significantly more accurate than IDW and it also outperforms Cokriging. We demonstrate that ROI can recreate soil moisture at unsampled locations. Last, we assessed the accuracy of soil moisture in Earth system models (ESMs) by using in situ and satellite observations. The results show that models can reproduce the seasonal variability in soil moisture over CONUS but with overestimation in the western U.S. and underestimation in the eastern U.S. There are significant regional and inter-model variations in performance. Advisors/Committee Members: Quiring, Steven (advisor), Frauenfeld, Oliver (committee member), Guneralp, Inci (committee member), Singh, Vijay (committee member).

Subjects/Keywords: Soil moisture; drought; interpolation; CMIP5

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APA (6^th Edition):

Yuan, S. (2016). Assessment of Multiple Approaches for Using Soil Moisture to Evaluate Drought in the U.S. Great Plains. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/159050

Chicago Manual of Style (16^th Edition):

Yuan, Shanshui. “Assessment of Multiple Approaches for Using Soil Moisture to Evaluate Drought in the U.S. Great Plains.” 2016. Doctoral Dissertation, Texas A&M University. Accessed January 16, 2021. http://hdl.handle.net/1969.1/159050.

MLA Handbook (7^th Edition):

Yuan, Shanshui. “Assessment of Multiple Approaches for Using Soil Moisture to Evaluate Drought in the U.S. Great Plains.” 2016. Web. 16 Jan 2021.

Vancouver:

Yuan S. Assessment of Multiple Approaches for Using Soil Moisture to Evaluate Drought in the U.S. Great Plains. [Internet] [Doctoral dissertation]. Texas A&M University; 2016. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1969.1/159050.

Council of Science Editors:

Yuan S. Assessment of Multiple Approaches for Using Soil Moisture to Evaluate Drought in the U.S. Great Plains. [Doctoral Dissertation]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/159050

Texas A&M University

21. Caro Spinel, Silvia. A Coupled Micromechanical Model of Moisture-Induced Damage in Asphalt Mixtures: Formulation and Applications.

Degree: PhD, Civil Engineering, 2011, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7336

► The deleterious effect of moisture on the structural integrity of asphalt mixtures has been recognized as one of the main causes of early deterioration of… (more)

▼ The deleterious effect of moisture on the structural integrity of asphalt mixtures has been recognized as one of the main causes of early deterioration of asphalt pavements. This phenomenon, usually referred to as moisture damage, is defined as the progressive loss of structural integrity of the mixture that is primarily caused by the presence of moisture in liquid or vapor state. Moisture damage is associated with the development of different physical, mechanical, and chemical processes occurring within the microstructure of the mixture at different intensities and rates. Although there have been important advancements in identifying and characterizing this phenomenon, there is still a lack of understanding of the damage mechanisms occurring at the microscopic level. This situation has motivated the research work reported in this dissertation. The main objective of this dissertation is to formulate and apply a numerical micromechanical model of moisture-induced damage in asphalt mixtures. The model focuses on coupling the effects of moisture diffusion—one of the three main modes of moisture transport within asphalt mixtures—with the mechanical performance of the microstructure. Specifically, the model aims to account for the effect of moisture diffusion on the degradation of the viscoelastic bulk matrix of the mixture (i.e., cohesive degradation) and on the gradual deterioration of the adhesive bonds between the aggregates and the asphalt matrix (i.e., adhesive degradation). The micromechanical model was applied to study the role of some physical and mechanical properties of the constitutive phases of the mixtures on the susceptibility of the mixture to moisture damage. The results from this analysis suggest that the diffusion coefficients of the asphalt matrix and aggregates, as well as the bond strength of the aggregate-matrix interface, have the most influence on the moisture susceptibility of the mixtures. The micromechanical model was further used to investigate the influence of the void phase of asphalt mixtures on the generation of moisture-related deterioration processes. Two different probabilistic-based approaches were used to accomplish this objective. In the first approach, a volumetric distribution of air voids sizes measured using X-Ray Computed Tomography in a dense-graded asphalt mixture was used to generate probable void structures in a microstructure of an asphalt mixture. In the second approach, a stochastic modeling technique based on random field theory was used to generate probable air voids distributions of the mixture. In this second approach, the influence of the air voids was accounted for by making the physical and mechanical properties of the asphalt matrix dependent on probable voids distributions. Although both approaches take into consideration the characteristics of the air void phase on the mechanical response of the mixtures subjected to moist environments, the former explicitly introduces the air phase within the microstructure while the latter indirectly includes its effects… Advisors/Committee Members: Masad, Eyad (advisor), Chen, Hamn-Ching (committee member), Little, Dallas (committee member), Lytton, Robert (committee member), Muliana, Anastasia (committee member), Scarpas, Athanasios (committee member).

Subjects/Keywords: Moisture damage; asphalt mixtures; micromechanics

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APA (6^th Edition):

Caro Spinel, S. (2011). A Coupled Micromechanical Model of Moisture-Induced Damage in Asphalt Mixtures: Formulation and Applications. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7336

Chicago Manual of Style (16^th Edition):

Caro Spinel, Silvia. “A Coupled Micromechanical Model of Moisture-Induced Damage in Asphalt Mixtures: Formulation and Applications.” 2011. Doctoral Dissertation, Texas A&M University. Accessed January 16, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7336.

MLA Handbook (7^th Edition):

Caro Spinel, Silvia. “A Coupled Micromechanical Model of Moisture-Induced Damage in Asphalt Mixtures: Formulation and Applications.” 2011. Web. 16 Jan 2021.

Vancouver:

Caro Spinel S. A Coupled Micromechanical Model of Moisture-Induced Damage in Asphalt Mixtures: Formulation and Applications. [Internet] [Doctoral dissertation]. Texas A&M University; 2011. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7336.

Council of Science Editors:

Caro Spinel S. A Coupled Micromechanical Model of Moisture-Induced Damage in Asphalt Mixtures: Formulation and Applications. [Doctoral Dissertation]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7336

Addis Ababa University

22. ABEBE, KEBEDE. THE ROLE OF MOISTURE SCHEME IN REGIONAL CLIMATE MODELLING OF PRECIPITATION OVER THE HORN OF AFRICA .

Degree: 2012, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/1307

► This study aims to improve the capability of the latest Regional Climate Model version 4 (RegCM4) to simulate the precipitation over the Horn of Africa.… (more)

Subjects/Keywords: Regional Climate Model; moisture scheme

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APA (6^th Edition):

ABEBE, K. (2012). THE ROLE OF MOISTURE SCHEME IN REGIONAL CLIMATE MODELLING OF PRECIPITATION OVER THE HORN OF AFRICA . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/1307

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

ABEBE, KEBEDE. “THE ROLE OF MOISTURE SCHEME IN REGIONAL CLIMATE MODELLING OF PRECIPITATION OVER THE HORN OF AFRICA .” 2012. Thesis, Addis Ababa University. Accessed January 16, 2021. http://etd.aau.edu.et/dspace/handle/123456789/1307.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

ABEBE, KEBEDE. “THE ROLE OF MOISTURE SCHEME IN REGIONAL CLIMATE MODELLING OF PRECIPITATION OVER THE HORN OF AFRICA .” 2012. Web. 16 Jan 2021.

Vancouver:

ABEBE K. THE ROLE OF MOISTURE SCHEME IN REGIONAL CLIMATE MODELLING OF PRECIPITATION OVER THE HORN OF AFRICA . [Internet] [Thesis]. Addis Ababa University; 2012. [cited 2021 Jan 16]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/1307.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

ABEBE K. THE ROLE OF MOISTURE SCHEME IN REGIONAL CLIMATE MODELLING OF PRECIPITATION OVER THE HORN OF AFRICA . [Thesis]. Addis Ababa University; 2012. Available from: http://etd.aau.edu.et/dspace/handle/123456789/1307

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Nairobi

23. Kimani, Peter K. Determination of Moisture and Temperature Variation in Wet Grains Over Time and Space to Effect Desiccant Drying .

Degree: 2016, University of Nairobi

URL: http://hdl.handle.net/11295/97642

► The aim of this study was to establish the best position to place super absorbent polymer (SAP)in an experimental granary for effective and economical drying.… (more)

▼ The aim of this study was to establish the best position to place super absorbent polymer (SAP)in an experimental granary for effective and economical drying. To achieve the aim of the study moisture migration and temperature distribution in stored wet grain was determined over time. Also determined was the best position for placing SAP in the silo for use in a direct solar drying grain silo. Results from experiments conducted were used to evaluate performance of the SAP in grain drying. The study was carried out in the University of Nairobi, Department of Environmental and Biosystems Engineering, Upper Kabete Campus. An experimental silo was designed. From the design, three experimental silos were fabricated. The initial experiment was conducted to determine moisture migration within the silos without use of Super Absorbent Polymer (SAP). In a second experiment drying was conducted using sun and super absorbent polymer placed inside the silo. The silo was evaluated in fifteen different sections. The sections were: East (top, central and bottom), West (top, central and bottom), North (top, central and bottom) South (top, central and bottom) and Center (top, central and bottom). Thermometers were placed in each section and readings taken in the morning, midday and evening. Modeling was done using regression analysis (MS Excel 2010) based on the minimization of sum of squares by adjusting the model constants. The coefficient of determination (R2), were used to evaluate the goodness of fit of the mathematical model to the actual data. The model considered for this study was: second degree polynomial regression model. The results exhibited that drying occurred faster at the top compared to the center and bottom sections. This was due to the fact that the top section was open hence moisture easily escaped to the atmosphere aided by the high vapor pressure gradient between the grains at the top surface of the silo and the atmospheric air. Second degree polynomial regression model produced the highest values of R2 for experiment with SAP and the that without. ~ vi ~ Generally, it was established from the research that there is a significant difference in the moisture content with depth in the three layers investigated during the entire drying period. There was a high moisture depletion in the top layer while there was a high moisture concentration at the center and bottom section with the central section having the highest. This was a clear indication that the SAP ought to be placed in the center section and partly bottom section as these were the areas with high moisture concentration. From the two sets of experiments conducted it was revealed that the silo with SAP had a steeper and smoother negative gradient as compared to that without; whose curves showed a series of negative and positive gradients. This indicated that SAP was able to take up extra moisture that emigrated into the center and bottom section and those that were brought about by moisture diffusion. The research work…

Subjects/Keywords: Moisture and Temperature Variation

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APA (6^th Edition):

Kimani, P. K. (2016). Determination of Moisture and Temperature Variation in Wet Grains Over Time and Space to Effect Desiccant Drying . (Thesis). University of Nairobi. Retrieved from http://hdl.handle.net/11295/97642

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kimani, Peter K. “Determination of Moisture and Temperature Variation in Wet Grains Over Time and Space to Effect Desiccant Drying .” 2016. Thesis, University of Nairobi. Accessed January 16, 2021. http://hdl.handle.net/11295/97642.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kimani, Peter K. “Determination of Moisture and Temperature Variation in Wet Grains Over Time and Space to Effect Desiccant Drying .” 2016. Web. 16 Jan 2021.

Vancouver:

Kimani PK. Determination of Moisture and Temperature Variation in Wet Grains Over Time and Space to Effect Desiccant Drying . [Internet] [Thesis]. University of Nairobi; 2016. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/11295/97642.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kimani PK. Determination of Moisture and Temperature Variation in Wet Grains Over Time and Space to Effect Desiccant Drying . [Thesis]. University of Nairobi; 2016. Available from: http://hdl.handle.net/11295/97642

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Queensland University of Technology

24. Dalel, Muhammad Iqbal Darma. Non-invasive method for detecting changes in soil moisture using wireless sensor networks.

Degree: 2012, Queensland University of Technology

URL: https://eprints.qut.edu.au/51039/

► There are several popular soil moisture measurement methods today such as time domain reflectometry, electromagnetic (EM) wave, electrical and acoustic methods. Significant studies have been… (more)

▼ There are several popular soil moisture measurement methods today such as time domain reflectometry, electromagnetic (EM) wave, electrical and acoustic methods. Significant studies have been dedicated in developing method of measurements using those concepts, especially to achieve the characteristics of noninvasiveness. EM wave method provides an advantage because it is non-invasive to the soil and does not need to utilise probes to penetrate or bury in the soil. But some EM methods are also too complex, expensive, and not portable for the application of Wireless Sensor Networks; for example satellites or UAV (Unmanned Aerial Vehicle) based sensors. This research proposes a method in detecting changes in soil moisture using soil-reflected electromagnetic (SREM) wave from Wireless Sensor Networks (WSNs). Studies have shown that different levels of soil moisture will affects soil’s dielectric properties, such as relative permittivity and conductivity, and in turns change its reflection coefficients. The SREM wave method uses a transmitter adjacent to a WSNs node with purpose exclusively to transmit wireless signals that will be reflected by the soil. The strength from the reflected signal that is determined by the soil’s reflection coefficients is used to differentiate the level of soil moisture. The novel nature of this method comes from using WSNs communication signals to perform soil moisture estimation without the need of external sensors or invasive equipment. This innovative method is non-invasive, low cost and simple to set up. There are three locations at Brisbane, Australia chosen as the experiment’s location. The soil type in these locations contains 10–20% clay according to the Australian Soil Resource Information System. Six approximate levels of soil moisture (8, 10, 13, 15, 18 and 20%) are measured at each location; with each measurement consisting of 200 data. In total 3600 measurements are completed in this research, which is sufficient to achieve the research objective, assessing and proving the concept of SREM wave method. These results are compared with reference data from similar soil type to prove the concept. A fourth degree polynomial analysis is used to generate an equation to estimate soil moisture from received signal strength as recorded by using the SREM wave method.

Subjects/Keywords: soil moisture; wireless sensor networks

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APA (6^th Edition):

Dalel, M. I. D. (2012). Non-invasive method for detecting changes in soil moisture using wireless sensor networks. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/51039/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dalel, Muhammad Iqbal Darma. “Non-invasive method for detecting changes in soil moisture using wireless sensor networks.” 2012. Thesis, Queensland University of Technology. Accessed January 16, 2021. https://eprints.qut.edu.au/51039/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dalel, Muhammad Iqbal Darma. “Non-invasive method for detecting changes in soil moisture using wireless sensor networks.” 2012. Web. 16 Jan 2021.

Vancouver:

Dalel MID. Non-invasive method for detecting changes in soil moisture using wireless sensor networks. [Internet] [Thesis]. Queensland University of Technology; 2012. [cited 2021 Jan 16]. Available from: https://eprints.qut.edu.au/51039/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dalel MID. Non-invasive method for detecting changes in soil moisture using wireless sensor networks. [Thesis]. Queensland University of Technology; 2012. Available from: https://eprints.qut.edu.au/51039/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

25. Ross, Claude Gray. Influence of soil moisture on the movement of bromacil in soil: Bromacil in soil.

Degree: MS, Farm Crops, 1966, Oregon State University

URL: http://hdl.handle.net/1957/47279

► In previous research, bromacil gave good performance when it was applied in early fall with fairly dry soil conditions and before the fall germinating weeds… (more)

▼ In previous research, bromacil gave good performance when it was applied in early fall with fairly dry soil conditions and before the fall germinating weeds had started growth. On the other hand, if bromacil was applied in late November, December, or January on nearly saturated soil with weeds that had grown for one or two months, weed control was quite noticeably reduced. Field and greenhouse studies were conducted at Corvallis, Oregon, to determine the influence of soil moisture and time of herbicide application on bromacil movement and performance. In one field trial, two or six acre-inches of water were applied by sprinkler irrigation at intervals following herbicide treatment. Intervals used were one day, two, four, or eight weeks following herbicide application on dry soil. Field bioassay with rape, wheat, oats, annual bluegrass, sugar beets, and winter field peas indicated that the performance of bromacil applied to dry soil was not affected by differences in irrigation levels or by the time interval between application and irrigation. Bioassay of core segments taken from the top six inches of soil showed no difference due to treatment and indicated that bromacil was not leached below three inches regardless of irrigation treatment. Of the bromacil found in the top three inches, approximately half of it was in the 0-1 inch segment. Difficulty in duplicating fall conditions appeared to have a definite effect on results of field studies. Extensive loss of soil moisture due to evaporation was probably the main factor causing deviation from the desired conditions. Another field trial included 0-, 1.5-, 3-, and 6-inch sprinkler irrigation rates on an annual bluegrass stand which had been treated with either pre- or post-emergence applications of bromacil. Irrigations were applied immediately after the post-emergence treatment. Both pre- and post-emergence applications of bromacil gave good control of annual bluegrass regardless of subsequent post-emergence irrigation. However, total precipitation during the first month was only 0.25 inches and where there was no irrigation, bromacil did not give adequate control. Greenhouse leaching studies with soil columns did not give satisfactory results. Consistent patterns of leaching throughout replications could not be accomplished. When bromacil movement was determined by the use of soil columns and subirrigation with 1.5 inches of water, there was no difference in movement whether it was applied to water-saturated or dry soil. A preliminary experiment with a shorter subirrigation period, however, resulted in less movement of the bromacil applied to dry soil. Bromacil movement in soil by subirrigation is not the same as leaching downward. Water moving through soil from subirrigation occurs through all except the very large pores; whereas in downward leaching, water primarily moves by gravity through the large pores once the small pores are filled. Advisors/Committee Members: Appleby, Arnold P. (advisor), Chilcote, William W. (committee member).

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Ross, C. G. (1966). Influence of soil moisture on the movement of bromacil in soil: Bromacil in soil. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/47279

Chicago Manual of Style (16^th Edition):

Ross, Claude Gray. “Influence of soil moisture on the movement of bromacil in soil: Bromacil in soil.” 1966. Masters Thesis, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/47279.

MLA Handbook (7^th Edition):

Ross, Claude Gray. “Influence of soil moisture on the movement of bromacil in soil: Bromacil in soil.” 1966. Web. 16 Jan 2021.

Vancouver:

Ross CG. Influence of soil moisture on the movement of bromacil in soil: Bromacil in soil. [Internet] [Masters thesis]. Oregon State University; 1966. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/47279.

Council of Science Editors:

Ross CG. Influence of soil moisture on the movement of bromacil in soil: Bromacil in soil. [Masters Thesis]. Oregon State University; 1966. Available from: http://hdl.handle.net/1957/47279

Oregon State University

26. Stammers, William Norman. The steady state flow of water through unsaturated soil in the low capillary potential region.

Degree: PhD, Soils, 1965, Oregon State University

URL: http://hdl.handle.net/1957/48630

► Several investigators have recently called attention to the fact that the flux equation for water movement in unsaturated soils may not be an appropriate mathematical… (more)

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Stammers, W. N. (1965). The steady state flow of water through unsaturated soil in the low capillary potential region. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/48630

Chicago Manual of Style (16^th Edition):

Stammers, William Norman. “The steady state flow of water through unsaturated soil in the low capillary potential region.” 1965. Doctoral Dissertation, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/48630.

MLA Handbook (7^th Edition):

Stammers, William Norman. “The steady state flow of water through unsaturated soil in the low capillary potential region.” 1965. Web. 16 Jan 2021.

Vancouver:

Stammers WN. The steady state flow of water through unsaturated soil in the low capillary potential region. [Internet] [Doctoral dissertation]. Oregon State University; 1965. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/48630.

Council of Science Editors:

Stammers WN. The steady state flow of water through unsaturated soil in the low capillary potential region. [Doctoral Dissertation]. Oregon State University; 1965. Available from: http://hdl.handle.net/1957/48630

Oregon State University

27. Trent, Donald S. The control of moisture condensed from saturated air flowing through cooled porous media.

Degree: MS, Mechanical and Industrial Engineering, 1964, Oregon State University

URL: http://hdl.handle.net/1957/48726

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Trent, D. S. (1964). The control of moisture condensed from saturated air flowing through cooled porous media. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/48726

Chicago Manual of Style (16^th Edition):

Trent, Donald S. “The control of moisture condensed from saturated air flowing through cooled porous media.” 1964. Masters Thesis, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/48726.

MLA Handbook (7^th Edition):

Trent, Donald S. “The control of moisture condensed from saturated air flowing through cooled porous media.” 1964. Web. 16 Jan 2021.

Vancouver:

Trent DS. The control of moisture condensed from saturated air flowing through cooled porous media. [Internet] [Masters thesis]. Oregon State University; 1964. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/48726.

Council of Science Editors:

Trent DS. The control of moisture condensed from saturated air flowing through cooled porous media. [Masters Thesis]. Oregon State University; 1964. Available from: http://hdl.handle.net/1957/48726

Oregon State University

28. Shen, Chung-Yi. The distribution of moisture condensed from saturated air flowing through cooled porous media.

Degree: MS, Mechanical Engineering, 1963, Oregon State University

URL: http://hdl.handle.net/1957/50398

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Shen, C. (1963). The distribution of moisture condensed from saturated air flowing through cooled porous media. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/50398

Chicago Manual of Style (16^th Edition):

Shen, Chung-Yi. “The distribution of moisture condensed from saturated air flowing through cooled porous media.” 1963. Masters Thesis, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/50398.

MLA Handbook (7^th Edition):

Shen, Chung-Yi. “The distribution of moisture condensed from saturated air flowing through cooled porous media.” 1963. Web. 16 Jan 2021.

Vancouver:

Shen C. The distribution of moisture condensed from saturated air flowing through cooled porous media. [Internet] [Masters thesis]. Oregon State University; 1963. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/50398.

Council of Science Editors:

Shen C. The distribution of moisture condensed from saturated air flowing through cooled porous media. [Masters Thesis]. Oregon State University; 1963. Available from: http://hdl.handle.net/1957/50398

Oregon State University

29. Ashcroft, Gaylen L. Gaussian elimination technique for solving the diffusion equation for moisture movement in unsaturated soil.

Degree: PhD, Soils, 1962, Oregon State University

URL: http://hdl.handle.net/1957/48972

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Ashcroft, G. L. (1962). Gaussian elimination technique for solving the diffusion equation for moisture movement in unsaturated soil. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/48972

Chicago Manual of Style (16^th Edition):

Ashcroft, Gaylen L. “Gaussian elimination technique for solving the diffusion equation for moisture movement in unsaturated soil.” 1962. Doctoral Dissertation, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/48972.

MLA Handbook (7^th Edition):

Ashcroft, Gaylen L. “Gaussian elimination technique for solving the diffusion equation for moisture movement in unsaturated soil.” 1962. Web. 16 Jan 2021.

Vancouver:

Ashcroft GL. Gaussian elimination technique for solving the diffusion equation for moisture movement in unsaturated soil. [Internet] [Doctoral dissertation]. Oregon State University; 1962. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/48972.

Council of Science Editors:

Ashcroft GL. Gaussian elimination technique for solving the diffusion equation for moisture movement in unsaturated soil. [Doctoral Dissertation]. Oregon State University; 1962. Available from: http://hdl.handle.net/1957/48972

Oregon State University

30. Stevenson, David Stuart. Effects of soil moisture-tension on rubidium uptake by sunflowers.

Degree: PhD, Soils, 1963, Oregon State University

URL: http://hdl.handle.net/1957/49979

► There is considerable evidence that the growth and elongation of plant roots increases linearly or almost linearly with increasing water contents or decreasing moisture-tension of… (more)

▼ There is considerable evidence that the growth and elongation of plant roots increases linearly or almost linearly with increasing water contents or decreasing moisture-tension of soil. If this is true it is difficult to distinguish the effects of different water contents on absorption phenomena such as water or ion uptake from the effects of the water contents on the root growth itself. Any absorption process which directly correlates with the amount of root growth is subject to misinterpretation as to the ultimate effect of changing water contents on the particular process. One useful alternative is to measure the root growth precisely and account for, through covariance, the differences in root growth as a result of differences in water contents or moisture-tensions in the soil. Samples of soil at various water contents and containing rubidium ions, were placed around the stems of six-week old sunflower plants and adventitious roots allowed to grow into the soil samples. The period of adventitious root growth was six days. Root growth water lost from the soil samples and the rubidium taken up into the above-ground parts of the plants were measured. All experiments were conducted in a controlled-environment growth room. Root growth was found to be closely related to the initial water contents of the soil samples. The relationship was slightly curvilinear. Water taken up by the adventitious roots was found to be dependent upon the amount of root growth and therefore closely related to the initial water contents. In all cases where the adventitious root systems were exposed to soil that was drier than that containing the main root systems of the plants the amounts of water which moved into the plants appeared to be small, much of the water remained in the adventitious roots themselves. When the water content of the soil for the adventitious roots was at a higher water content than that containing the main root systems, considerably more water appeared to move into the plants through the adventitious root systems. Rubidium uptake was not consistently affected by the different water contents, nor was the uptake correlated with the amount of root growth. There was, however, at least as much rubidium accumulated in the plants in 28 hours, when the adventitious roots were wetter than the main root systems, as was accumulated in the plants in six days when the adventitious roots were drier than the main root systems. It appears that the transport of water from the roots to the plants may be an important factor in ion accumulation and it may be that the uptake of ions will not correlate with water conditions at the root surface unless and until rapid transport of water takes place. Since water uptake appears to be closely related to the amount of root growth, the effects of water contents on the absorption process itself must be interpreted with caution or the root growth measured and accounted for. It is not known if the same holds true for ion uptake. In these experiments the… Advisors/Committee Members: Boersma, Larry (advisor).

Subjects/Keywords: Soil moisture

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APA (6^th Edition):

Stevenson, D. S. (1963). Effects of soil moisture-tension on rubidium uptake by sunflowers. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/49979

Chicago Manual of Style (16^th Edition):

Stevenson, David Stuart. “Effects of soil moisture-tension on rubidium uptake by sunflowers.” 1963. Doctoral Dissertation, Oregon State University. Accessed January 16, 2021. http://hdl.handle.net/1957/49979.

MLA Handbook (7^th Edition):

Stevenson, David Stuart. “Effects of soil moisture-tension on rubidium uptake by sunflowers.” 1963. Web. 16 Jan 2021.

Vancouver:

Stevenson DS. Effects of soil moisture-tension on rubidium uptake by sunflowers. [Internet] [Doctoral dissertation]. Oregon State University; 1963. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1957/49979.

Council of Science Editors:

Stevenson DS. Effects of soil moisture-tension on rubidium uptake by sunflowers. [Doctoral Dissertation]. Oregon State University; 1963. Available from: http://hdl.handle.net/1957/49979

Open Access Theses and Dissertations