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Dissertations / Theses on the topic 'Soil profile'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Chung, Sun-Ok. "On-the-go soil strength profile sensor /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p3137684.

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2

Malvajerdi, Ahmad Sharifi. "Development of a soil compaction profile sensor." Thesis, Cranfield University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414666.

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3

Hancock, Steven J. "Geostatistics in soil profile interpretation for irrigated Riverland properties /." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09SB/09sbh235.pdf.

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4

Udukumburage, Rajitha Shehan. "Investigation of climatic-induced ground responses in expansive soils." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/198195/1/Rajitha%20Shehan_Udukumburage_Thesis.pdf.

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This thesis presents a practical approach for geotechnical practitioners to investigate the climatic-induced ground responses in expansive soils. The method is based on a novel long-term operable instrumented soil column (ISC). This research investigated the applicability of the current displacement models to the Australian context. As a result, the structural damages and maintenance costs due to cracking of light-weight structures founded on such soils can be minimised, and more importantly, the hazards to human lives can be prevented by improved decisions.

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5

Sanchez, Pedro Andrade. "Design, development, and field evaluation of a soil compaction profile sensor /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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6

Nussberger, Mathis. "Soil moisture determination with TDR: single-rod probes and profile reconstruction algorithms /." Zürich, 2005. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=15965.

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7

Jessett, Clifford Alan. "Investigation of the liquefaction of a soil profile using in situ tests." Thesis, City University London, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316399.

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8

Zou, Ze-Yuan. "Determination of flow and transport properties in a deep unsaturated soil profile." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/284526.

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Three goals of this research were: (1) to study the movement of a non-reactive tracer (bromide) and of water through non-aggregated fine sand, with low clay (1.2%) and organic matter content (<1%); 2) to develop an inverse method for estimating the hydraulic properties of unsaturated soil from intermediate- and field-scale infiltration data; and (3) to develop a transient in-situ method for calibrating the neutron probe. All three goals of this research are crucial for understanding and determining water and solute transport at the intermediate to field scale. The field research was conducted

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9

HAMED, LAMY MAMDOH MOHAMED. "NITROGEN BALANCE IN SOIL PROFILE AS AFFECTED BY DIFFERENT SOIL TYPE, SOIL WATER REGIMES, NITROGEN RATE AND APPLICATION METHODS USING 15N TRACER TECHNIQUE." Doctoral thesis, Università degli Studi di Milano, 2014. http://hdl.handle.net/2434/232140.

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The interaction effect of “Soil type, Soil water regime, Nitrogen fertilizer application Rates and Timing” on Nitrogen balancein soil were studied; in terms of nitrogen gained by plant portions, remained in soil, and losses through different ways under wheat (Triticum aestivum L. Giza 168), in order to identify the most proper and effective combinations of above-studied variables that provides a satisfactory grain wheat yield and minimizes the use of chemical nitrogen fertilizers, to save the surrounding environment and to achieve good water saving. Two fields of experiments were carried out

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10

Timmenga, Hubert J. "The transport of mineral and organic matter into the soil profile by Lumbricus rubellus Hoffmeister." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27551.

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The biology and ecology of the earthworm Lumbricus rubellus Hoffmeister, 1843, and its effects on the turn-over of organic matter and soil are not well known. To gather this information, the ingestion and egestion rates were measured using a litterbag technique and the transport of organic matter was quantified with a newly developed method, using soil columns to which ¹⁴C labelled plant material was added. The feeding habits of the worm were positively influenced by temperature in wet soils (> -15m of water) and were negatively influenced in dry soil (< -15 m of water). The total egestion ra

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11

Henderson, Rachel A. "Partitioning Soil CO2 Efflux through Vertical Profiles of Manipulated Forests in MOFEP." University of Toledo / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1177701393.

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12

Berg, Karin. "Simulations of groundwater levels and soil water content : Development of a conceptual hydrological model with a continous soil profile." Thesis, Linköping University, Department of Thematic Studies, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1910.

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<p>Transport of chemical substances through a catchment depend to a large extent on the water content of the soil through which they are transported. When the groundwater level rise and fall, redox conditions change in the soil and the transport of substances is affected. </p><p>The aim of this study is to develop a hydrological model which is able to simulate soil water content at different depths and groundwater level in a soil profile. A new type of conceptual model is developed, which uses a continous represenation of the soil and soil water from the soil surface down to the bedrock. The m

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13

McCartney, Matthew Peter. "The hydrology of a headwater catchment containing a dambo." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265632.

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14

Tifafi, Marwa. "Different soil study tools to better understand the dynamics of carbon in soils at different spatial scales, from a single soil profile to the global scale." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLV021/document.

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Les sols sont la principale composantede l’écosystème terrestre et le plus grand réservoir de carbone organique sur Terre, étant très réactifs aux perturbations humaines et aux changements climatiques. Malgré leur importance dans les réservoirs de carbone, la dynamique du carbone des sols est une source importante d'incertitudes pour les prévisions climatiques futures. Le but de la thèse était d'explorer différents aspects d’études du carbone des sols (mesures expérimentales, modélisation et évaluation de bases de données) à différentes échelles spatiales (de l'échelle d'un profil à l'échelle

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15

Tifafi, Marwa. "Different soil study tools to better understand the dynamics of carbon in soils at different spatial scales, from a single soil profile to the global scale." Electronic Thesis or Diss., Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLV021.

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Les sols sont la principale composantede l’écosystème terrestre et le plus grand réservoir de carbone organique sur Terre, étant très réactifs aux perturbations humaines et aux changements climatiques. Malgré leur importance dans les réservoirs de carbone, la dynamique du carbone des sols est une source importante d'incertitudes pour les prévisions climatiques futures. Le but de la thèse était d'explorer différents aspects d’études du carbone des sols (mesures expérimentales, modélisation et évaluation de bases de données) à différentes échelles spatiales (de l'échelle d'un profil à l'échelle

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16

Bourgault, du Coudray Philip L. "The leaching of chloride from a de-watered, non-irrigated, saline soil profile." Thesis, Bourgault du Coudray, Philip L. (1996) The leaching of chloride from a de-watered, non-irrigated, saline soil profile. PhD thesis, Murdoch University, 1996. https://researchrepository.murdoch.edu.au/id/eprint/52471/.

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Extensive areas of non-irrigated agricultural land in Western Australia have become saline. Rehabilitation requires the immobilisation of salt at the catchment scale as well as the removal of excess salt from within the rooting zone. The latter issue requires the determination of the physical and temporal factors affecting the leaching of excess salt by rainfall. The leaching of chloride from a saline de-watered soil profile near Kellerberrin, in the West Australian Wheatbelt, was investigated. The project involved three distinct phases that allowed a full analysis of the actual and potenti

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17

Yassin, Adel Taha. "The Vertical Distribution of Salts in a Soil Profile During the Drainage Process." DigitalCommons@USU, 1986. https://digitalcommons.usu.edu/etd/4642.

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The purpose of this study was to develop a model to predict water extraction patterns and therefore salt distribution patterns in a one dimensional homogeneous soil profile for a specified root distribution . Water extraction was simulated as a function of the total potential and the root density at any level of the profile. Salt redistribution caused by irrigation was simulated by assuming a partial and proportional displacement of the water in each soil layer. A computer program was written for the model in Fortran language and implemented on the Vax. To evaluate the performance of the model

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18

Gothoskar, C. S. "The influence of particle size on sand-pack properties and drying profile." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1533.

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Thesis (M.S.)--West Virginia University, 2000.<br>Title from document title page. Document formatted into pages; contains xi, 65 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 63-65).

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19

LATTIN, ESTHER E. "PROFILE AND NITROGEN DYNAMICS OF MICROBIAL COMMUNITIES IN AGRICULTURAL INTERCROPPING SHRUB-CROP SYSTEMS OF SENEGAL." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu151214658405052.

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20

Elmi, Abdirashid A. "Denitrification and nitrous oxide dynamics in the soil profile under two corn production systems." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38482.

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Concerns for environmental quality stimulate the development of various management strategies that mitigate nutrient losses to the environment.<br>Field experiments were conducted at St. Emmanuel, Quebec, from 1998 to 2000 to investigate the combined effects of water table management and N fertilizer application rates on corn yield, concentrations of NO3- -N in the soil profile and tile subsurface drainage water, denitrification and N2O production rates, and N2O:N2O+N 2 production ratios in the soil profile. There were two water table treatments: free drainage (FD) with open drains at a 1.0 m

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21

顔盈曦 and Ying-hei Yuen. "Urban soil pollution by heavy metals in public greenspaces in Hong Kong: profile and particle-fractiondistribution." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31228094.

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22

Björklind, Malin. "Soil profile analysis by vibration theory and the natural frequency : Applied on a case project." Thesis, Luleå tekniska universitet, Geoteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-67151.

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To explore soil conditions at sites of infrastructure projects a number of geotechnical soundings are performed at appropriate intervals. Results are, in the nature of their set up, limited to the specific points at which the sounding is performed. To safely assume the area between bore holes a new method is applied and tried at the case railroad project Stenkumla – Dunsjö. By applying vibration theory in conjunction with the studied soils’ geodynamic properties the natural frequency for the soil can be calculated. The properties of the natural frequency also makes it possible to detect in vib

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23

McHugh, Maureen. "Moisture regimes, redoz/podzolic characteristics and profile morphology of stagnopodzols, stagnohumic gley soils and their reclaimed counterparts on Exmoor." Thesis, University of Exeter, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253518.

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24

Roshani, Pedram. "The Effect of Temperature on the SWCC and Estimation of the SWCC from Moisture Profile under a Controlled Thermal Gradient." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31072.

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In many situations, the upper layers of soil above the ground water table are in a state of unsaturated condition. Although unsaturated soils are found throughout the world, they are predominant in arid or semi-arid regions. In these areas, the soil water characteristic curve (SWCC) which relates the water content to the matric suction could be used as key tool to implement the mechanics of unsaturated soils into the designs of geotechnical structures such as dams, embankments, pavements, canals, and foundations. Several experimental techniques are available for determining the SWCC in a labo

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25

Naudžiūnaitė, Aistė. "Sunkiųjų metalų migracija skirtingų tipų dirvožemių profiliuoe." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20090615_114718-15613.

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Darbo objektas – dviejų skirtingų dirvožemių profiliai. Darbo tikslas – ištirti sunkiųjų metalų migracijos ypatumus atskiruose dirvožemių profilių horizontuose. Darbo metodai - morfologinių dirvožemių profilių savybių tyrimas, dirvožemių profilių horizontų agrocheminių savybių (pH, organinės medžiagos kiekio, granuliometrinės sudėties) tyrimas pagal standartizuotas metodikas, sunkiųjų metalų (Zn, Cr, Pb, Cu) bendrųjų koncentracijų ir judriųjų jonų (CH3COONH4) profilių horizontų dirvožemiuose tyrimas atominės absorbcijos spektrometrijos metodu. Rezultatai – I dirvožemis buvo giliau glėjiškas p

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26

Masada, Teruhisa. "Structural performance of profile-wall plastic pipes under relatively shallow soil cover and subjected to large surface load." Ohio : Ohio University, 1996. http://www.ohiolink.edu/etd/view.cgi?ohiou1174611925.

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27

Warren, Samantha. "A geostatistical study of soil profile data from an irrigated vineyard in the Hundred of Markaranka, Riverland, South Australia /." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09SB/09sbw293.pdf.

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28

Winchester, Jason. "A geostatistical study of soil profile data from the Riverland, S.A., and the application to vineyard development and upgrading /." Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09SB/09sbw759.pdf.

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29

Lu, Ye. "Reconstruction, characterization, modeling and visualization of inherent and induced digital sand microstructures." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37176.

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Strain localization, the phenomenon of large shear deformation within thin zones of intensive shearing, commonly occurs both in-situ and in the laboratory tests on soils specimens. The intriguing mechanism of strain localization and how it will affect the general behavior of soil specimens have been investigated by many researchers. Some of the efforts have focused on finding the links between material properties (void space, fabric tensor) and mechanical behavior (stress, strain, volumetric strain). In the last ten years, several extensive studies have been conducted at Georgia Tech to invest

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30

Gregorauskienė, Virgilija. "Cheminių elementų kiekių kaitos dėsningumai Lietuvos dirvožemio profilyje." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20121227_090556-03063.

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Disertaciniame darbe analizuojama Lietuvos dirvožemio cheminės sudėties vertikali kaita, paremta akredituotose laboratorijose nustatytais Lietuvos teritorijoje gautais duomenimis, analizuotais taikant standartizuotus matematinius–statistinius metodus. Tai leido objektyviai pagrįsti vertikalaus cheminių elementų pasiskirstymo dirvožemyje bendrus dėsningumus ir išryškinti Lietuvos dirvožemio vertikalios geocheminės sudėties specifiką tarptautiniame kontekste. Dirvožemio granuliometrinės sudėties ir išskirtų frakcijų cheminės sudėties analizė išryškino sąsajas tarp dirvožemio granuliometrinės ir

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31

Tanner, Christopher R. "Vertical Profile of Heavy Metal Concentrations in Soil From an Agricultural Field With and Without Applied Sewage Sludge in Bowling Green, Wood County, Ohio." Bowling Green State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1151014530.

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32

Oh, Saekyung. "Analysis of a corrugated metal box type culvert." Ohio : Ohio University, 1989. http://www.ohiolink.edu/etd/view.cgi?ohiou1182447590.

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33

Tanner, Christopher R. "Vertical profile of heavy metal concertrations in soil from an agricultural field with and without applied sewage sludge in Bowling Green, Wood County, Ohio." Connect to this title online, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1151014530.

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34

Souza, Leonardo Camillo Grosso de. "Produtividade do milho após dessecação antecipada da pastagem degradada com e sem aplicação de cama de aviário." Universidade do Oeste Paulista, 2018. http://bdtd.unoeste.br:8080/jspui/handle/jspui/1124.

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Submitted by Michele Mologni (mologni@unoeste.br) on 2019-01-24T16:56:25Z No. of bitstreams: 1 Leonardo Camillo Grosso de Souza.pdf: 620949 bytes, checksum: 9b5db07b2086b97ee45f36346e5bf5b4 (MD5)<br>Made available in DSpace on 2019-01-24T16:56:25Z (GMT). No. of bitstreams: 1 Leonardo Camillo Grosso de Souza.pdf: 620949 bytes, checksum: 9b5db07b2086b97ee45f36346e5bf5b4 (MD5) Previous issue date: 2018-10-10<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The objective of this work was to evaluate the effects and consequences of the desiccation periods of the Urochloa

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35

Keatley, David J. "Three-Dimensional Nonlinear Analysis of Deeply-Buried Corrugated Annular HDPE Pipe with Changes in Its Profile-Wall." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1237230121.

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36

Benitez, Maria Soledad. "Applied T-RFLP Analyses for the Identification and Characterization of Microbial Populations Associated With Damping-Off Incidence in a Transitional Organic Cropping System." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1218471106.

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37

BRANT, FABIO DE ALBUQUERQUE C. "PHYSICAL, CHEMICAL, MINERALOGICAL AND MECHANICAL PROPERTIES OF A BASALTIC RESIDUAL SOIL PROFILE FROM A CUT IN THE NORTH-SOUTH RAILWAY IN THE STATE OF TOCANTINS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=6679@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE APOIO A NÚCLEOS DE EXCELÊNCIA<br>Embora uma vasta área do Brasil esteja localizada em regiões que a formação de basalto se faz presente, são raros os estudos em perfis contendo solo e / ou rochas de caráter básico objetivando correlacionar características químicas e mineralógicas com características geotécnicas. A área do presente estudo localiza-se em um corte em solo na Ferrovia Norte-Sul, no Município de Arguianópolis-TO, em que durante sua execução ocorreram diversos escorregamentos. O maciço de solo do co

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38

Even, Matthew James. "How does groundwater subsidy of vegetation change as a function of landscape position and soil profile characteristics at the Ciha Fen (Johnson County, IA, USA)?" Thesis, University of Iowa, 2014. https://ir.uiowa.edu/etd/4624.

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39

Rodrigues, Rafaela Ana Rech. "Estágio de intemperismo de perfil laterítico em área subtropical com substrato basáltico - superfície aplainada VI (SW PR)." Universidade Estadual do Oeste do Parana, 2011. http://tede.unioeste.br:8080/tede/handle/tede/127.

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Made available in DSpace on 2017-05-12T14:42:48Z (GMT). No. of bitstreams: 1 Rafaela_Ana_Rech_Rodrigues.pdf: 3839276 bytes, checksum: 0e4c44f90332130f089ffc46bdc0853a (MD5) Previous issue date: 2011-08-03<br>Planation surfaces mean the last stage in the reliefs evolution. In order to understand how was the evolution process and formation of the surfaces it becomes necessary to looking for information about the process soil formation related to the climate regime and the bedrock. The Southwest region of Parana and Northwest of Santa Catarina are characterized by a succession of remains of inc

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40

Givaudan, Nicolas. "Adaptation strategies of soil biodiversity (earthworms) to pesticides : mechanisms in play and ecosystemic cost assessment." Thesis, Rennes 1, 2014. http://www.theses.fr/2014REN1S083/document.

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Ce travail de thèse a cherché à déterminer si la contamination résiduelle à long terme des sols agricoles par les pesticides induit le développement de mécanismes d’adaptation aux pesticides chez les vers de terre. Il a aussi visé à identifier les coûts potentiels de l’adaptation de l’échelle de l’individu à celle de la population, et les conséquences pour l’écosystème sol. Une contamination résiduelle du sol par les pesticides est mesurée et comparée dans trois champs cultivés en agriculture conventionnelle (classés en fonction de l’historique cultural comme « haut », « moyen » et « bas » niv

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41

Navarro-Ainza, Jose A. Cristobal. "Fertilizer Nitrogen Recovery and N15 and Bromide Distribution in the Soil Profile as Affected by the Time of Application on an Irrigated Upland Cotton (Gossypium hirsutum L.)." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/194172.

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The first project involved the evaluation of different times of application on the fertilizer nitrogen recovery (FNR) in the soil-plant system in an irrigated upland cotton system, during two seasons. This was accomplished by using the isotopic dilution technique applying the 15N to microplots. No differences were observed in the total plant FNR, seed and stover, soil and the total FNR among the different 15N application times; however, despite no differences were observed in the plant the FNR value ranged from 30-38%, while the seed exhibited the highest FNR with an average over 50% of the 15

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42

Oliveira, Verena Benício de. "Infiltração da água em amostras de solo indeformadas e remodeladas em colunas utilizando modelos determinísticos." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-14032019-150501/.

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Define-se infiltração da água no solo como a entrada da água através da superfície do solo. O processo de infiltração separa, assim, quanto da precipitação pluvial, por exemplo, flui sobre a superfície do solo e quanto flui abaixo da superfície do solo, esta última tanto vertical como horizontalmente. Diversos fatores interferem neste processo, podendo-se destacar aqueles relacionados ao tipo de solo e declividade do terreno e às características do solo e da cobertura vegetal, bem como aquelas relacionadas à precipitação. São conhecidas diversas equações de infiltração, propostas para expressa

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43

BOTTARDI, CARLO. "Exploring lower atmosphere and topsoil with gamma-ray spectroscopy." Doctoral thesis, Università degli studi di Ferrara, 2020. http://hdl.handle.net/11392/2488154.

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Radioactivity is a natural phenomenon that can be found everywhere and that can origin from the far-away Universe, from the atmosphere, from Earth and even from our body. It consists in the stabilization of nucleus through the emission of particles and energy. Gammas photons have higher penetration power respect to the other common radiations, characteristics that makes them ideal to perform proximal and remote sensing and investigating cosmic, atmospheric and terrestrial sources of radioactivity. Using this peculiarity of gamma spectroscopy during my PhD I studied cosmic rays and 222Rn in low

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44

Rühlmann, Jörg, and Swen Meyer. "Der Geophilus Bodenprofilscanner." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-230027.

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45

Rizzo, Rodnei. "Técnicas espectroscópicas e atributos do terreno no mapeamento digital de solos." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-02052011-091133/.

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O conhecimento dos atributos do solo e de sua variabilidade espacial são essenciais para a aplicação de um manejo racional, promovendo altas produtividades e baixo impacto ambiental. Dentre as informações mais utilizadas para o planejamento e tomadas de decisão na atividade agrícola, observa-se o mapa pedológico. Este indica de maneira simplificada uma série de atributos, tais como a textura, as condições químicas e a morfologia. Em contrapartida, estes mapas são escassos, desatualizados ou mesmo apresentam-se em escala inadequada, resultando em um entrave no desenvolvimento agrícola sustentáv

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46

Jones, Edward. "Proximal sensing in soil profiles." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/18722.

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Objective and quantitative soil information is crucial for pedological investigations and to inform diverse decision making processes. New techniques are required so that soil information can be ascertained in a timely manner to support sampling at finer spatial and temporal resolutions. Currently, no single technique can provide information on all of the properties of interest. This research investigated the conjoint use of visible near-infrared diffuse reflectance spectroscopy (VisNIR) and portable X-ray fluorescence spectroscopy (pXRF) for the in situ investigation of soil properties, profi

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Eaton, Frank Edward. "Generation of predetermined soil profiles in a soil bin." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/290268.

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The soil preparation in soil bins must be capable of generating a number of soil density profiles varying from uniform to heavily compacted layers lying below more friable soil. A subsurface rotating rod firmed the soil beneath the rod and repeated passes produced desired profiles. Retrofitting the existing instrumentation with virtual instrumentation methods resulted in measurements that were more precise and improved repeatability. A Wheatstone bridge force transducer measured Cone Index pressure as a function of soil penetration depth. Soil surface elevation and implement depths were locate

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Yenier, Emrah. "Limitations On Point-source Stochastic Simulations In Terms Of Ground-motion Models." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610308/index.pdf.

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In this study, the limitations of point-source stochastic simulations are investigated in terms of fundamental geophysical parameters. Within this context, a total of 6000 synthetic ground motions are generated for various magnitude (5.0 &amp<br>#8804<br>Mw &amp<br>#8804<br>7.5), source-to-site distance (less than 100 km), faulting style (shallow dipping and strike-slip) and site class (soft, stiff and rock) bins. The simulations are performed in two main stages: (1) the acceleration time series at outcropping very hard rock sites are simulated based on the stochastic method proposed by Boore

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Portela, Cristina de Fátima Alves. "Infraestruturas hidráulicas. Escavação de valas, equipamentos e análise económica." Master's thesis, Universidade de Évora, 2013. http://hdl.handle.net/10174/14541.

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Nas obras de infraestruturas hidráulicas sistemas de abastecimento de água, sistemas de drenagem de águas residuais e pluviais e sistemas de rega - os processos de escavação das valas são fundamentais para a garantia do bom assentamento e desempenho das tubagens. O dimensionamento do equipamento para a escavação de valas baseia-se no estudo geotécnico do terreno apresentado em projeto de modo a garantir a boa execução da obra. Neste trabalho é apresentada e comparada a análise económica de duas formas de execução das valas: escavação de valas executadas pelo perfil-tipo do projeto, recorrendo

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Melhorado, Maria Florbela Silvestre. "Controle da erosão e da infiltração em solo mediterrâneo com aplicação de poliacrilamida aniónica na água de rega." Master's thesis, Universidade de Évora, 1998. http://hdl.handle.net/10174/13142.

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A erosão e a baixa infiltração são problemas comuns nos solos Mediterrâneos do sul de Portugal. Estes solos são frequentemente solos argiluviados caracterizados por um horizonte superficial de pequena espessura e fraca estrutura e um horizonte B "textural" de acumulação de argila, e consequentemente, de baixa permeabilidade. O controle da erosão e a possibilidade de aumentar a infiltração nestes solos são particularmente importantes para a sustentabilidade dos sistemas agrícolas aí implantados, especialmente os de regadio, uma vez que para além de importantes degradações que se verificam na es

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