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Dissertations / Theses on the topic 'Soil and water microorganism'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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1

Schmitz, Bradley William. "Reduction of Enteric Pathogens and Indicator Microorganisms in the Environment and Treatment Processes." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/612535.

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The reduction of pathogenic microorganisms is essential to minimize human health risks associated with the reuse, reclamation, and recycling of wastewater and the land application of biosolids (sewage sludge). The most advanced treatment technologies, as well as, the most representative methods and indicator organisms are necessary to ensure public safety. The goal of this dissertation is to assess advanced Bardenpho wastewater treatment technologies in regards to virus removal, suggest the most appropriate viral indicators of human fecal contamination and/or treatment process controls, and de
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2

Sherchan, Samendra Prasad. "Monitoring Microbial Water Quality via Online Sensors." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/293470.

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To protect public health, detection and treatment technologies have been improved to monitor and inactivate pathogens in drinking water. The goal of this dissertation is to evaluate and utilize multiple online sensors and advanced oxidation processes to document both the detection as well as destruction of microbial contaminants in real-time. Reviews of rapid detection technologies for real-time monitoring of pathogens in drinking water and advanced technologies to inactivate pathogens in water are shown in Appendices A and B. The study in Appendix C evaluated the efficacy of real-time sensor
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3

Lopez, Gerardo Urquijo. "Transfer of Microorganisms from Fomites to Hands and Risk Assessment of Contaminated and Disinfected Surfaces." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/272839.

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It is now widely accepted that surface contamination plays an important role in the transmission of both respiratory and gastrointestinal infections in the domestic environment and community setting. The efficiency of transfer of a pathogen to the hand from a fomite is important in modeling transmission in microbial risk assessment models. The objective of this study was to use published literature to assess the role of fomites and hands in disease transmission, and to conduct fomite-to-finger transfer studies from various porous and nonporous fomites under different relative humidity conditi
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4

Ntloko, Athini. "Evaluation of incidence of Mycobacterium tuberculosis complex associated with soil, hayfeed and water in three Agricultural facilities in Amathole District Municipality in the Eastern Cape Province, South Africa." Thesis, University of Fort Hare, 2015. http://hdl.handle.net/10353/756.

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Mycobacterium bovis and other species of Mycobacterium tuberculosis complex (MTBC) can result to a zoonotic infection known as Bovine tuberculosis (bTB). MTBC has members that may contaminate an extensive range of hosts, including wildlife. Diverse wild species are known to cause disease in domestic livestock and are acknowledged as TB reservoirs. It has been a main study worldwide to deliberate on bTB risk factors as a result some studies focused on particular parts of risk factors such as wildlife and herd management. The objectives of this study were to design questionnaires from commercial
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5

Bachmann, R. T. "Growth studies of an autochthonous drinking water microorganism : Aquabacterium commune." Thesis, University of Sheffield, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486754.

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Results from the optimisation of the DPASV technique showed that a drop size of 4 appeared to give the best overall performance in terms of precision in multi-elemental (Zn, Cd, Pb, Cu) trace analysis. A deposition time of 60 s was sufficient to accurately determine the concentration of Zn, Cd, Pb and Cu between 1-200 ppb. It is suggested to use ultrapure 0.1M KNO3 instead of 3M KCI as electrolyte in the reference electrode to minimise sample contamination. 1/10 KM samples for multi-elemental analysis by ICP-MS should be diluted by a factor of 10 to ensure that the total dissolved solids conce
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6

McCaffery, Kevin A. "Isolation and Characterization of a Microorganism from Groundwater that Reduces Arsenate." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/McCafferyKA2002.pdf.

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7

Ankumah, Ramble O. "Enhanced degradation in soil of the herbicide EPTC and determination of its degradative pathway by an isolated soil microorganism /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu148759630735724.

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8

Buchanan, Margaret MacNeill. "Soil Water Flow and Irrigated Soil Water Balance in Response to Powder River Basin Coalbed Methane Product Water." Thesis, Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/buchanan/BuchananM0505.pdf.

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A repacked soil columns experiment and a series of computer soil water balance simulations were conducted to examine potential impacts of coalbed methane (CBM) water from Montana's Powder River Basin (PRB) on soil water flow and water balance in PRB soils. CBM water is often high in sodium, which may separate soil clay particles, particularly after soil exposure to low-salinity rainfall or snowmelt, and when soils contain expansible smectite clay minerals. Aggregates in soils exposed to sodic water may swell and slake, and clays and other fine particles may disperse, clogging soil pores and sl
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9

Barrett, Gary Edward. "Infiltration in water repellent soil." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28618.

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Observations made at Goat Meadows - a small sub-alpine basin located near Pemberton, British Columbia -demonstrated that a layer which is either water repellent or has only a limited affinity for water is present at most vegetated sites. The layer is typically a few centimetres in thickness, and is usually located at or near the top of the profile: it was present only in the zone of accumulation of organic matter. The spatial distribution of the layer did not appear to be related to the distribution of any particular species of plant. Sampling of sub-alpine sites in the Cascade, Selkirk, and P
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10

BRUNO, ANTONIA. "Drinking water microbiota: from the source to the tap." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2016. http://hdl.handle.net/10281/101854.

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Drinking water quality is a public health concern worldwide. Growing evidences depict drinking water as a complex matrix, in which a wide diversity of microorganisms interacts in a dynamic network. Dealing with environmental samples, the “great plate count anomaly” must be taken into account: only a minimal portion of bacteria can grow on cultured media. Molecular techniques can give a deeper knowledge, going beyond the limit of culture-dependent methods, even if the living/death distinction is a traditional limitation. We collected water samples during an extended monitoring campaign of dri
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11

Zhang, Guanghui, and 張廣輝. "Soil-water characteristics of sandy soil and soil cement with and without vegetation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/208025.

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The use of soil cement as a growth medium was examined in this study. During the monitoring, green soil cement revealed diverse ecological values. The survival rates of plants in each soil conditions were higher than 80%,which was very promising. Furthermore, the survival rates dropped when the soil density reached95%, which means soil density might influence the survival rate of plant. Plant growth rates in sandy soil were higher than that in soil cement. In particular, low soil density facilitated plant growth in sandy soil, whereas density effect was not clear to plant growth performance in
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12

Bobart, Hawkins Jane Madge. "Amino acids as diagnostics of soil and soil water quality." Thesis, University of Plymouth, 2004. http://hdl.handle.net/10026.1/2425.

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Information on the contribution of amino acids to dissolved organic nitrogen and carbon exported from grassland soil is scarce. Evidence from the literature for other environments, suggests that determination of amino acid patterns of distribution may be a useful method for improved understanding of the interaction of microbial synthesis and degradation of organic N in conjunction with soil physical states. A sample pre-concentration technique and an HPLC methodology were developed that enabled the determination of dissolved free (DFAA) and combined (DCAA) amino acids in natural waters at pico
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13

Carminati, Andrea. "Unsaturated water flow through soil aggregates /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17011.

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14

Ekanayake, Jagath C. "Soil water movement through swelling soils." Lincoln University, 1990. http://hdl.handle.net/10182/1761.

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The present work is a contribution to description and understanding of the distribution and movement of water in swelling soils. In order to investigate the moisture distribution in swelling soils a detailed knowledge of volume change properties, flow characteristics and total potential of water in the soil is essential. Therefore, a possible volume change mechanism is first described by dividing the swelling soils into four categories and volume change of a swelling soil is measured under different overburden pressures. The measured and calculated (from volume change data) overburden potentia
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15

Ng, Man-chung, and 吳敏聰. "Water infiltration in unsaturated soil slope." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B46599642.

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16

Qureshi, Suhail Ahmad. "Soil water balance of intercropped corn under water table management." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23289.

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A one year water table management field study was conducted on a Soulanges sandy loam soil in Soulanges county, Quebec. Two controlled water table levels, i.e. 0.5 m and 0.75 m from the soil surface, as well as free outlet conventional drainage treatments were established in monocropped corn (Zea mays L.) and corn intercropped with ryegrass (Lolium multiflorum Lam) plots.<br>Cropping system showed no significant effects on evapotranspiration, and on soil moisture distribution. It was observed that the 0.5 m and 0.75 m controlled water tables (CWT) provided the same soil moisture trends in both
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17

Dalton, James A. "Contribution of upward soil water flux to crop water requirements." Thesis, University of Southampton, 2006. https://eprints.soton.ac.uk/344938/.

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18

Chang, Chao-Ting. "Soil water availability regulates soil respiration temperature dependence in Mediterranean forests." Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/406082.

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The variations of ecosystem and soil respiration are mainly driven by temperature and precipitation, but the importance of temperature and precipitation could vary across temporal and spatial. At diurnal to annual temporal scales, ecosystem and soil respiration generally increase with average annual temperature, but very low or very high soil moisture has been shown to diminish the temperature response of respiration. Therefore, in water-limited ecosystem, such as the Mediterranean region where the seasonal pattern is characterized with significant summer drought, precipitation patterns are li
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19

Mortl, Amanda E. "Monitoring soil moisture and soil water salinity in the Loxahatchee floodplain." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0015734.

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20

Kreba, Sleem. "LAND USE IMPACT ON SOIL GAS AND SOIL WATER TRANSPORT PROPERTIES." UKnowledge, 2013. http://uknowledge.uky.edu/pss_etds/31.

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The consequences of land use choices on soil water and gas transport properties are significant for gas and water flux in agricultural environments. Spatial and temporal patterns and associations of soil water and soil gas characteristics and processes in different land uses are not well understood. The objectives of this study were to 1) characterize soil structure under crop and grass systems, 2) quantify spatial patterns and associations of soil physical characteristics in crop and grass systems, and 3) quantify spatial and temporal patterns and associations of CO2 and N2O fluxes. The resea
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21

Feeney, Deborah Siobhan. "The influence of fungi upon soil structure and soil water relations." Thesis, Abertay University, 2004. https://rke.abertay.ac.uk/en/studentTheses/2a92d2fc-b3c5-456f-8b9a-e406bd78ee84.

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The investigation of soil structural stability and soil water processes was assessed through the application of laboratory investigations and a field based analysis. The impact of an arbuscular mycorrhizal (AM) fungal exudate glomalin (a glycoprotein), proposed to be hydrophobic was assessed for a correlation with low levels of soil hydrophobicity through measures of subcritical water repellency. Initially no correlation was reported but a further temporal investigation that involved a soil inoculum detected a significant positive effect; the results indicated that a certain concentration of p
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22

Hayat, Faisal [Verfasser], and Andrea [Akademischer Betreuer] Carminati. "Impact of heterogeneous soil water distribution on soil and plant water relations / Faisal Hayat ; Betreuer: Andrea Carminati." Bayreuth : Universität Bayreuth, 2021. http://d-nb.info/1227444591/34.

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23

Fontes, Adan Fimbres 1953. "Soil Albedo in Relation to Soil Color, Moisture and Roughness." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/191203.

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Land surface albedo is the ratio of reflected to incident solar radiation. It is a function of several surface parameters including soil color, moisture, roughness and vegetation cover. A better understanding of albedo and how it changes in relation to variations in these parameters is important in order to help improve our ability to model the effects of land surface modifications on climate. The objectives of this study were 1) To determine empirical relationships between smooth bare soil albedo and soil color, 2) To develop statistical relationships between albedo and ground-based thematic
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24

Al-Ali, Mahmoud. "Soil water conservation and water balance model for micro-catchment water harvesting system." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/10941.

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A simple water balance model was applied to a micro-catchment water harvesting system for a semi-arid area in the North-Eastern part of Jordan. Two Negarim micro-catchment water harvesting systems were built at Al-Khanasri research station. A Randomized complete block design (RCBD) in factorial combination was used with six treatments and three replicates. Each plot was divided into two parts; a runoff area, and a run-on area. Two different treatments were used for the catchment area, these were: compacted (T1) and Natural treatments (T2). Three treatments were used for the run-on area, these
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25

Godow, Bratt Tora, Mathilda Stigenberg, Andreas Elenborg, Sarah Ågren, and Andreas Medhage. "To monitor the microbial biodiversity in soil within Uppsala." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-444210.

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This is an exploration of the potential for a citizen science project, with the goal to get the general public involved in microbial soil biodiversity around Uppsala, Sweden. Biodiversity serves an important role in how an ecosystem performs and functions. A large part of Earth's biodiversity exists below ground in soil, where microorganisms interact with plants. It would be beneficial to analyse the abundance and spread of some microorganisms in order to gain a better understanding of soil biodiversity. We suggest that one species family to study could be Phytophthora. Phytophthora is a genus
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26

Osburn, Ernest Daniel. "Effects of land management and climate change on soil microbial communities in Appalachian forest ecosystems." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/102867.

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In terrestrial ecosystems, microorganisms are the dominant drivers of virtually all ecosystem processes, particularly cycling of carbon (C), nitrogen (N), and phosphorus (P). These microbial functions are critical for promoting ecosystem services that support human well-being, such as provisioning of clean drinking water, nitrogen retention, and carbon storage. In forests of the Appalachian region of the eastern US, these ecosystem services are threatened by multiple anthropogenic influences, including present and past land use activities (e.g., logging, conversion to agriculture) and climate
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27

Osburn, Ernest D. "Effects of land management and climate change on soil microbial communities in Appalachian forest ecosystems." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/102867.

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In terrestrial ecosystems, microorganisms are the dominant drivers of virtually all ecosystem processes, particularly cycling of carbon (C), nitrogen (N), and phosphorus (P). These microbial functions are critical for promoting ecosystem services that support human well-being, such as provisioning of clean drinking water, nitrogen retention, and carbon storage. In forests of the Appalachian region of the eastern US, these ecosystem services are threatened by multiple anthropogenic influences, including present and past land use activities (e.g., logging, conversion to agriculture) and climate
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28

Khandker, Md Humayun Kabir. "Crop growth and water-use from saline water tables." Thesis, University of Newcastle Upon Tyne, 1994. http://hdl.handle.net/10443/580.

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How much water can a crop abstract from below a saline water table and how does the salinity affect yield? These questions are important because shallow groundwater may represent a substantial resource in flat, low-lying areas, but may also represent a threat to sustainability where salinity is high. A series of experiments in a glasshouse aimed to elucidate irrigation management practice under salinity conditions and to develop a root uptake model under both osmotic and matric stresses. The extraction of soil water and groundwater by lettuce and perennial ryegrass crops were measured in three
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29

Coltman, Kenna Maria. "Water table management effects on water quality: a soil column study." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1195165287.

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30

Coltman, Kenna Marie. "Water table management effects on water quality : a soil column study /." Connect to resource, 1992. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1195165287.

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31

Zelasko, Amanda Jean. "Soil reduction rates under water saturated conditions in relation to soil properties." NCSU, 2007. http://www.lib.ncsu.edu/theses/available/etd-07172007-154810/.

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The success of wetland restoration projects depends in part on the length of time that a soil is in a reduced redox state. The length of time that a soil is reduced depends on how quickly reduction occurs following saturation with water. The relationship between reduction rate and various soil chemical and mineralogical properties is poorly understood, but such properties might be manipulated to improve the success of wetland restoration projects. The goals of this research were to determine soil properties that predict the rate at which soils undergo reduction when saturated, and to determine
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32

Klopp, Hans Walter. "Soil Salinity and Sodicity Impacts on Soil Shrinkage, Water Movement and Retention." Thesis, North Dakota State University, 2015. https://hdl.handle.net/10365/27879.

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Saline, sodic, and saline-sodic ground waters are problematic throughout the Northern Great Plains and Red River Valley. High sodium adsorption ratio (SAR) and low electrical conductivity (EC) of soil solution and irrigation waters are known to create issues with saturated soil hydrologic conductivity. Our objective was determine the impact of saline, sodic and saline-sodic solutions on soil shrinkage and soil hydrologic properties. Soil shrinkage, water retention, and hydraulic conductivity were determined on a variety of soil textures following saturation with salt solutions of variable EC a
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33

Mampana, Reedah Makgwadi. "Cropping system effects on soil water, soil temperature and dryland maize productivity." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/43165.

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Improved soil water conservation has become an important subject in semi-arid areas due to low and erratic rainfall which is often combined with higher temperatures to provide unsuitable conditions for successful crop productivity. Dryland agriculture remains vulnerable to yield losses in these areas. This calls for implementation of conservation agricultural practices that would improve dryland maize productivity. An on-station field trial was started in 2007 at Zeekoegat experimental farm (24 kilometers north of Pretoria), to establish the effect of different conservation agriculture practic
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34

Eriksson, Mikael. "Biodegradation of hydrocarbons in soil and water /." Stockholm : Tekniska högsk, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3072.

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35

Abou, Nahra Joumana. "Modeling phosphorus transport in soil and water." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102946.

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The main objective of this project was to investigate and model phosphorus (P) transport in soil column studies. A model named HYDRUS-NICA was developed, by coupling a hydrological and transport model (HYDRUS-1D model) with an aqueous chemical model (non-ideal competitive adsorption - NICA), to improve the predictions of P transport in soil and water. The HYDRUS-NICA model was developed by replacing the non-linear empirical (Freundlich and Langmuir) equations of the HYDRUS-1D model with the NICA model equations. The numerical accuracy of the HYDRUS-NICA model was then evaluated by comparing th
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36

Husman, S. H., M. J. Ottman, K. L. Johnson, and R. J. Wegener. "Durum Response to Soil Water Depletion Levels." College of Agriculture, University of Arizona (Tucson, AZ), 1999. http://hdl.handle.net/10150/205173.

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Research has not been conducted in Arizona to determine when to irrigate wheat based on soil water depletion levels. The purpose of this work is to establish the optimum irrigation timing based on depletion of plant available water in the soil. A field experiment was conducted at the Maricopa Agricultural Center testing irrigation of wheat at 35, 50, 65, and 80% depletion of plant available water in the soil for two durum varieties, Kronos and Westbred 881. Grain yields averaged over the two varieties were 6479, 5099, 4283, and 4145 lbs/acre for the 35, 50, 65, and 80% depletion levels, respec
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37

Keller, Thomas. "Soil compaction and soil tillage - studies in agricultural soil mechanics /." Uppsala : Dept. of Soil Sciences, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/a489.pdf.

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38

Speirs, Simon Douglas. "Characterising soil structural stability and form of sodic soil used for cotton production." Thesis, The University of Sydney, 2006. http://hdl.handle.net/2123/5817.

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In eastern Australia, Vertosols are widely utilised for the production of irrigated cotton (Gossypium hirsutum) due to their inherent fertility and large water–holding capacity. However, irrigated agriculture in eastern Australia is faced with a decline in the availability of good quality irrigation water sources i.e. waters with low electrolyte concentrations and small Na+ contributions. Consequently, alternative water resources that contain larger contributions of Na+ are becoming increasingly relevant as potential irrigation sources. It is known that the application of Na+ rich waters as ir
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Speirs, Simon Douglas. "Characterising soil structural stability and form of sodic soil used for cotton production." Faculty of Agriculture, Food and Natural Resources, 2006. http://hdl.handle.net/2123/5817.

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Doctor of Philosophy(PhD)<br>In eastern Australia, Vertosols are widely utilised for the production of irrigated cotton (Gossypium hirsutum) due to their inherent fertility and large water–holding capacity. However, irrigated agriculture in eastern Australia is faced with a decline in the availability of good quality irrigation water sources i.e. waters with low electrolyte concentrations and small Na+ contributions. Consequently, alternative water resources that contain larger contributions of Na+ are becoming increasingly relevant as potential irrigation sources. It is known that the applica
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40

Al-Yahyai, Rashid. "Soil water depletion, growth, physiology, and yield of carambola trees in Krome soil." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0007920.

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41

Haigh, R. A. "Water balance and water quality studies in an underdrained clay soil catchment." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371543.

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42

Pourfathali, Kasmaei Leila. "Long Term Environmental Modelling of Soil-Water-Plant Exposed to Saline Water." Thesis, KTH, Mark- och vattenteknik (flyttat 20130630), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-99344.

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The impact of long term management strategies of irrigation with saline water in semi-arid region of Gordonia, South Africa is the highest interest to optimize water consumption, soil conservation, and crop yield for sustainable water allocations to human food production and ecosystem without irreversible damages to soil and water body. An integrated ecosystem assimilation, in shape of soil-water storage model based on physical approach for 30-year simulation run defined in form of digital ecosystem modelling with help of CoupModel tool to assemble together the most important underlying proces
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43

Mutter, Ghazi Maleh. "Water erosion of calcareous soils in South-East England." Thesis, Imperial College London, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318679.

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44

Maral, Nuh. "Soil And Water Analysis Techniques For Agricultural Production." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611829/index.pdf.

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ABSTRACT SOIL AND WATER ANALYSIS TECHNIQUES FOR AGRICULTURAL PRODUCTION Maral, Nuh M. Sc., Department of Chemistry Supervisor: Prof. Dr. G. inci G&ouml<br>kmen May 2010, 108 pages In Turkey, usage of increasing amounts of fertilizers and pesticides by some unconscious farmers cause soil pollution and soil infertility for the crop production. Usage of water in excessive amounts and/or in poor quality for irrigation creates problems during the plant production. So in this study, soil and water samples were analyzed by using simple and reliable techniques for the soil and water quality
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45

Sankey, Joel Brown. "Modeling Soil Water Content for Precision Range Management." Thesis, Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/sankey/SankeyjJ1205.pdf.

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I developed site-specific empirical models to predict spring soil water content for two Montana ranches. The models used publicly available Landsat TM 5, USGS DEM, and soil survey-derived data as predictor variables. The goal of the project was to test whether ranchers could collect a limited size soil water content data set, build sitespecific regression models based on the data set, and construct soil water content maps based on the models. The response variable for models consisted of 100 and 82 average soil profile mass water content samples for each ranch, respectively. Half the samples w
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46

Heitman, Joshua L. "Measurement of coupled soil heat and water processes." [Ames, Iowa : Iowa State University], 2007.

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47

Hector, D. J. "Capture of soil water by crop root systems." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378493.

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48

Ashraf, Muhammad. "Dynamics of soil water under non-isothermal conditions." Thesis, University of Newcastle Upon Tyne, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336299.

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49

Kamat, Madhusudan Sunil. "Soil moisture change due to variable water table." Thesis, Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54922.

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The thesis numerically models and investigates the effect of a variable water table on the soil moisture content. The modelling is done using COMSOL and Richards' equation. The temporal variation plots can be used to find the capillarity of the soil and its impact on other phenomenon such as vapor intrusion and infiltration.
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50

Parks, Olivia Waverly. "Effect of water temperature on cohesive soil erosion." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/49663.

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In light of increased stream temperatures due to urbanization and climate change, the<br />effect of water temperature on cohesive soil erosion should be explored. The objectives of this study are to: determine the effect of water temperature on the erosion rates of clay; determine how erosion rates vary with clay mineralogy; and, explore the relationship between zeta potential and erosion rate. Samples of kaolinite- and montmorillonite-sand mixtures, and vermiculite-dominated soil were placed in the wall of a recirculating flume channel using a vertical sample orientation. Erosion rate was me
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