Rozprawy doktorskie na temat „Soil properties”
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TOUFIGH, MOHAMMAD MOHSEN. "BEHAVIOR OF UNSATURATED SOIL AND ITS INFLUENCE ON SOIL - SOIL INTERACTION AT AN INTERFACE". Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184224.
Pełny tekst źródłaFranks, Carol Dawn. "Temperature, moisture and albedo properties of Arizona soils". Thesis, The University of Arizona, 1985. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1985_263_sip1_w.pdf&type=application/pdf.
Pełny tekst źródłaMenefee, Dorothy. "Anthropogenic influences on soil microbial properties". Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/32657.
Pełny tekst źródłaDepartment of Agronomy
Ganga M. Hettiarachchi
Human activities have the potential to alter soil biochemical properties in a number of different ways. This thesis will focus on how agricultural practices (tillage and cropping system), climate change, and urban soil pollution (primarily lead and arsenic) affect soil biochemical properties. Two incubation studies were conducted to determine how human activities influence soil biochemical properties. The first study focused on how altered temperature and moisture regimes affected soil properties from four different agroecosystems. Four different soils were incubated under two different soil preparation methods (sieved <4mm and <0.25 mm), three different temperature treatments (12, 24, and 36°C), and two different moisture treatments (field capacity and 80% of field capacity) for 180 days. Destructive samples were taken at 7, 30, 60, 120, and 180 days and the soil microbial community was analyzed using phospholipid fatty acid analysis (PLFA). The second study investigated how soil amendment treatments (Mushroom Compost and Composted Biosolids) of an industrially contaminated site affected the biochemical properties of that soil. Surface soil samples collected 435 days after compost addition from urban garden test plots located adjacent to a former rail yard in Monon, Indiana. Soils were incubated for 30 days to stimulate microbial activity. Following incubation, the soil was analyzed for PLFA, soil enzymes, and available metal fractions. In the first study the greatest differences were found between the <4mm and the <0.25 mm size fractions – which highlights the effect of soil aggregation and structure on microbial populations. After aggregation effects, temperature treatment had the next largest effect on microbial populations, with the greatest biomass in the middle (24°C) treatment. The second study assessed different soil amendments on soil microbial properties and metal availability. Composted biosolids reduced metal availability and increased microbial enzyme activity and biomass.
Young, Fred J. "Spatial variability of soil properties within a loess-covered, upland landscape /". free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9823319.
Pełny tekst źródłaWhitacre, Shane D. "Soil Controls on Arsenic Bioaccessibility: Arsenic Fractions and Soil Properties". The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1244036619.
Pełny tekst źródłaYoung, Iain McEwing. "Soil strength and hard-setting behaviour of some structurally unstable British soils". Thesis, University of Aberdeen, 1987. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU010498.
Pełny tekst źródłaGALAGODA, HERATH MAHINDA. "NONLINEAR ANALYSIS OF POROUS SOIL MEDIA AND APPLICATION (PORE PRESSURE, TIME INTEGRATION, FINITE ELEMENTS)". Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183913.
Pełny tekst źródłaPengthamkeerati, Patthra. "Soil physical and microbiological properties affected by soil compaction, organic amendments and cropping in a claypan soil /". free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p3164537.
Pełny tekst źródłaStinghen, Geovanne Silva. "Assessment of nitrogen efficiency in maize due to soil compaction and changes in soil physical properties /". free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1422967.
Pełny tekst źródłaWhitacre, Shane Dever. "Soil controls on arsenic bioaccessibility arsenic fractions and soil properties /". Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1244036619.
Pełny tekst źródłaMasiyandima, Mutsa Cecelia. "The effect of tine geometry on soil physical properties". Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23284.
Pełny tekst źródłaA field experiment was carried out on a clay soil to determine the effect of the geometry of bladed tillage implements on some soil physical properties after tillage. The soil properties evaluated were bulk density, mean clod size distribution and total pore space after tillage and the extent of loosening achieved.
Implement parameters considered were blade width, rake angle and depth of operation of the implement. Two blade widths of 75 and 150 mm were evaluated in combination with three rake angles of 30, 60 and 90 degrees. Each tillage implement was drawn through the soil at four operating depths of 100, 150, 200 and 250 mm.
Larger rake angles were observed to result in larger mean aggregate sizes and greater bulk density reductions when compared to smaller rake angles. Greater reduction in bulk density was observed with the wider of the two blade widths evaluated. Mean clod size after tillage was also observed to be large for the wider of the two widths evaluated. Irrespective of width and rake angle, greater operating depths resulted in larger mean clod sizes and greater reductions in bulk density as compared to shallower operating depths. Fractal analysis showed the extent of fragmentation to be greater at shallower operating depths, hence the small mean clod sizes obtained.
Nagaraj, H. B. "Prediction Of Engineering Properties Of Fine-Grained Soils From Their Index Properties". Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/209.
Pełny tekst źródłaNagaraj, H. B. "Prediction Of Engineering Properties Of Fine-Grained Soils From Their Index Properties". Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/209.
Pełny tekst źródłaThomas, Pamela J. "Quantifying Properties and Variability of Expansive Soils in Selected Map Units". Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/30441.
Pełny tekst źródłaPh. D.
Veronesi, Fabio. "3D advance mapping of soil properties". Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/7848.
Pełny tekst źródłaPapritz, Anreas Jürg Papritz Andreas Jürg. "Estimating temporal change of soil properties /". [S.l.] : [s.n.], 1993. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10233.
Pełny tekst źródłaGardner, Trevor Noel. "The acoustic properties of gassy soil". Thesis, University of Oxford, 1988. http://ora.ox.ac.uk/objects/uuid:1fe2a2d0-a2e3-4f8d-bb37-3db2e1505939.
Pełny tekst źródłaLuginbuhl, Katharine. "Soil stabilization properties of flexible intruders". Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74450.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (p. 18).
In many locations, soil is held in place by the roots of plants. When these plants are removed or die, the soil loses its cohesive strength and erodes away. We seek to create artificial soil stabilizers that use the same physical principles as the plant roots. To investigate how flexible materials can stabilize soil, we use photoelastic particles to analyze the forces within a system when a flexible intruder is introduced to the system. We report on the increase in system forces as an effect of the flexible intruder and compare it to experiments with plant roots. Since soil is a granular material, using this method to increase the forces within patches of soil may help prevent erosion or landslides.
by Katharine Luginbuhl.
S.B.
Dorsey, Jay Dunton. "Farming system effects on soil properties /". The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487863429092017.
Pełny tekst źródłaNiemiec, Jonathan. "Investigation of soil-geosynthetic interface properties". Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3929.
Pełny tekst źródłaTitle from document title page. Document formatted into pages; contains xvi, 222 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 218-222).
Esposito, Nicole C. "Soil Nutrient Availability Properties of Biochar". DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1096.
Pełny tekst źródłaMiller, Kendall Mar 1958. "INTERPRETIVE SCHEME FOR MODELING THE SPATIAL VARIATION OF SOIL PROPERTIES IN 3-D (AUTOCORRELATION, STOCHASTIC, PROBABILITY)". Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/276981.
Pełny tekst źródłaFisha, Phuti Cedric. "Characterisation of selected soil properties using remote sensing techniques". Thesis, University of Limpopo, 2019. http://hdl.handle.net/10386/2861.
Pełny tekst źródłaMany conventional laboratory methods are used to characterise spatial and temporal variation of soil properties in order to understand soil quality for different purposes. Currently there is a high demand for accurate soil information by land users. Therefore there is a need to develop a rapid, inexpensive, non-destructive and accurate technique that could compensate or replace conventional laboratory methodologies. Remote sensing has the potential to serve as an alternative approach to characterise soil properties due to its advantages over conventional laboratory methods such as it is rapid, non-destructive and it has low cost. The objectives of this study were to: (i) evaluate the ability of proximal soil sensing to characterise soil properties namely organic matter, soil moisture content, macronutrients, soil texture, cation exchange capacity (CEC), and pH. (ii) Identify bands of relevance from proximal soil sensing (300-2400 nm) that can provide acceptable reflectance variation for different levels of selected soil properties. (iii) Evaluate the performance of models developed from multispectral space-borne image in characterising selected soil properties. In this study spectroradiometer (proximal sensor) and worldview 2 satellite images (space-borne) were the two remote sensing techniques used to collect information about soil at Syferkuil experimental farm of the University of Limpopo. Visible and near infrared spectral data of 98 soil samples were collected at the study site using Analytical spectral device (ASD) field spectroradiometer. Spectral reflectance from spectroradiometer and those extracted from worldview 2 satellite image were used to develop prediction models of selected soil properties using Partial least square regression (PLSR). Bands of relevance were also identified from PLSR models developed from spectral data acquired by spectroradiometer. The results showed that estimation accuracy of PLSR models developed using spectral data from proximal soil sensing were excellent (Category A) for clay, sand, soil organic matter (SOM), and soil moisture content, while good prediction accuracy (Category B) was observed for other soil properties such as silt, ammonium, nitrate, active acidity (pHw), calcium, magnesium, phosphorus, potassium, sulphur, CEC, and reserve acidity (pHKCl). Then, relevant bands which contributed greatly in the prediction of these soil attributes were selected from the electromagnetic spectrum, the range was from 451 nm to 2400 nm. These bands fall within visible, shortwave infrared and near-infrared x regions of electromagnetic spectrum. In addition all selected soil properties were approximately quantitatively estimated using spectral data from satellite image. Based on the results obtained it can be concluded that proximal soil sensing has the ability to predict selected soil properties with various accuracies and it can be used as an alternative technique to characterise soil properties of South African soils. Soil predicting models developed from proximal soil sensing data also showed that there are bands of relevance within spectral range of 451 nm to 2400 nm. However more work is required for space-borne sensing before it can be used as one of the soil characterisation methods since its prediction accuracy was low as compared to that of hyperspectral proximal soil sensing. Keywords: Space-borne sensing; proximal soil sensing; soil characterisation.
Jiang, Pingping. "Variability of soil hydraulic properties and estimation of plant-available water on claypan-soil landscapes". Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4783.
Pełny tekst źródłaThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on September 25, 2007) Vita. Includes bibliographical references.
Paolucci, Alessandro. "Soil development of an anthropogenic filling with affects to soil properties". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/12648/.
Pełny tekst źródłaAl-Hussaini, Abdulrahman. "The utility of complex soil reflectance image properties for soil mapping". Thesis, Manchester Metropolitan University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299213.
Pełny tekst źródłaSchnürer, Ylva. "Influence of soil properties and organic pesticides om soil microbial metabolism /". Umeå : Dept. of Forest Ecology, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/2006118.pdf.
Pełny tekst źródłaKreba, Sleem. "LAND USE IMPACT ON SOIL GAS AND SOIL WATER TRANSPORT PROPERTIES". UKnowledge, 2013. http://uknowledge.uky.edu/pss_etds/31.
Pełny tekst źródłaBones, Emma Jean. "Predicting critical shear stress and soil erodibility classes using soil properties". Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52198.
Pełny tekst źródłaWijesundara, Sunetra M. "Relationships of soil test phosphorus with soil properties and phosphorus forms". Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-06062008-151136/.
Pełny tekst źródłaCollins, Steve Alan. "Development and implementation of a hypoelastic constitutive theory to model the behavior of sand". Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/21282.
Pełny tekst źródłaSouthworth, Roger Kevin 1961. "SPATIAL VARIATION MODELING OF REGULARLY SPACED SOIL PROPERTY DATA IN ONE DIMENSION (TIME SERIES ANALYSIS)". Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/276870.
Pełny tekst źródłaBiscaro, André Scatena Arriaga Francisco J. "Management and landscape variability effects on selected coastal plain soil physical properties". Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Agronomy_and_Soils/Thesis/Biscaro_Andre_51.pdf.
Pełny tekst źródłaMaribeng, Lebea. "The influence of parent material (granite and schist) on physical and chemical properties of soils on the Syferkuil Experimental Farm". Thesis, University of Limpopo (Turfloop Campus), 2007. http://hdl.handle.net/10386/606.
Pełny tekst źródłaThe influence of parent material on physical and chemical properties of soil was studied on granite and schist derived soils on the Syferkuil Experimental Farm, situated in the Mankweng area of the Limpopo Province of South Africa. A total of 49 samples of virgin soils were collected, where granite soils constituted 26 samples and schist soils 23. The study design that was used is cross-sectional. The samples were analysed for physical and chemical properties. The physical properties of granite and schist soils were determined as percentages coarse sand, percentages medium sand, percentages fine sand, percentages very fine sand, percentages silt and percentages clay, whilst the chemical properties were determined as concentrations (cmol (+) kg-1) of Na, Mg, Ca, K ,ESP, CEC and P (mg kg-1), as well as pH. Statistical analysis of the results was performed by application of the Unpaired Student’s T Test, with the level of significance at p<0.05. The results showed that soils derived from granite had significantly higher coarse and medium sand fractions than schist soils; whereas schist soils were significantly higher in fine sand, very fine sand, silt and clay. The concentrations of Na, Ca, ESP and P, as well as CEC and pH in schist derived soils were higher than in granite derived soils although the differences were insignificant. However, significant differences occurred in K and Mg concentrations where schist derived soils had higher concentrations than granite derived soils. However, the concentrations of nutrient elements were found to be insufficient for proper production in agriculture. The sodium concentration was found to be low enough to not lead to sodic soil conditions. It was concluded that both granite and schist soils can be used for agriculture but require careful management because both soils indicated poor nutritional status.
Tucker, Alison. "The effects of cyclic freeze-thaw on the properties of high water content clays /". Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63372.
Pełny tekst źródłaHolland, Jonathan Eddison. "Changes in soil physical properties under raised bed cropping /". Connect to thesis, 2006. http://eprints.unimelb.edu.au/archive/00002537.
Pełny tekst źródłaZelasko, 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/.
Pełny tekst źródłaSisman, Fatma Nurten. "Estimation Of Dynamic Soil Properties And Soil Amplification Ratios With Alternative Techniques". Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615501/index.pdf.
Pełny tekst źródłas surface is dependent on local soil conditions. It is well known that the soft sediments on top of hard bedrock can greatly amplify the ground motion and cause severe structural damage. When the fundamental period of the soil is close to the fundamental period of a structure, structural damage increases significantly. Estimation of the fundamental periods, amplification factors and types of soils is critical in terms of reduction of loss and casualties. For the reasons stated, estimation of dynamic behavior of soils has become one of the major topics of earthquake engineering. Studies for determining dynamic properties of soils depend fundamentally on the estimation of the S-wave velocity profiles, amplification factors and ground response. In this study first, the Multi-Mode Spatial Autocorrelation (MMSPAC) method is used to estimate the S-wave velocity profiles at the sites of interest. This method is different than the other ones in the sense that it works for the higher modes as well as the fundamental mode. In the second part, Horizontal to Vertical Spectral Ratio (HVSR) method will be used on both microtremor and ground motion data. Finally, the amplification factors from alternative methods are compared with each other. Consistent results are obtained in terms of both fundamental frequencies and amplification factors.
Meredith, Kelly Robyn. "The Influence of Soil Reconstruction Methods on Mineral Sands Mine Soil Properties". Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31006.
Pełny tekst źródłaMaster of Science
Clarke, Francis J. "Effects of Biofuel Crops on Soil Physical and Hydrological Properties on a Miamian Soil in Central Ohio". The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu158592486603924.
Pełny tekst źródłaNciizah, Adornis Dakarai. "Cattle manure, scalping and soil wetness effects on some physical properties of a hardsetting soil and associated early maize growth". Thesis, University of Fort Hare, 2011. http://hdl.handle.net/10353/349.
Pełny tekst źródłaGhassemi, Ali. "Nonparametric geostatistical estimation of soil physical properties". Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63904.
Pełny tekst źródłaAl-Gosaibi, A. M. "Bioengineering properties of soil stabilisers and mulches". Thesis, University of Liverpool, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354534.
Pełny tekst źródłaMinasny, Budiman. "Efficient Methods for Predicting Soil Hydraulic Properties". Thesis, The University of Sydney, 2000. http://hdl.handle.net/2123/853.
Pełny tekst źródłaMinasny, Budiman. "Efficient Methods for Predicting Soil Hydraulic Properties". University of Sydney. Land, Water & Crop Sciences, 2000. http://hdl.handle.net/2123/853.
Pełny tekst źródłaNaujock, Lisa. "DEVELOPMENT OF HYDRAULIC AND SOIL PROPERTIES FOR SOIL AMENDMENTS AND NATIVE SOILS FOR RETENTION PONDS IN MARION COUNTY, FLORIDA". Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2880.
Pełny tekst źródłaM.S.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Civil Engineering MS
YATES, SCOTT RAYMOND. "GEOSTATISTICAL METHODS FOR ESTIMATING SOIL PROPERTIES (KRIGING, COKRIGING, DISJUNCTIVE)". Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/187990.
Pełny tekst źródłaPaterson, Stacey. "Soil Spatial Scaling: Modelling variability of soil properties across scales using legacy data". Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/19895.
Pełny tekst źródłaDexter, Anthony Roger. "Soil mechanical properties and the behaviour of roots in structured soil : published works". Title page, contents and introduction only, 1988. http://web4.library.adelaide.edu.au/theses/09SD/09sdd526.pdf.
Pełny tekst źródłaWalworth, James. "Soil Sampling and Analysis". College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2006. http://hdl.handle.net/10150/144813.
Pełny tekst źródłaSoil testing is comprised of four steps: Collection of a representative soil sample, laboratory analyses of the soil sample, interpretation of analytical results, and management recommendations based on interpreted analytical results.