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Dissertations / Theses on the topic 'Percolating water'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Sukop, Michael C. "POROSITY, PERCOLATION THRESHOLDS, AND WATER RETENTION BEHAVIOR OF RANDOM FRACTAL POROUS MEDIA." UKnowledge, 2001. http://uknowledge.uky.edu/gradschool_diss/459.

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Fractals are a relatively recent development in mathematics that show promise as a foundation for models of complex systems like natural porous media. One important issue that has not been thoroughly explored is the affect of different algorithms commonly used to generate random fractal porous media on their properties and processes within them. The heterogeneous method can lead to large, uncontrolled variations in porosity. It is proposed that use of the homogeneous algorithm might lead to more reproducible applications. Computer codes that will make it easier for researchers to experiment wi

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2

Serem, Vincent Kipyego Arap. "Effects of tillage and corn residues on nitrate-nitrogen and water movement through soil." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29130.

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Laboratory soil columns, 0.3 m diameter $ times$ 0.7 m long, and two computer simulation models, LEACHM-N and NTRM, were used to investigate nitrate-nitrogen ($ rm NO sb{3 sp{-}}$-N) leaching in a sandy loam soil. The following treatments were studied: no-till (NT), reduced tillage (RT), and conventional tillage (CT) practices, with residue (R) and without residue (NR). Nitrogen fertilizer was applied at a rate of 180 kg/ha in granular form (experiment I), and in solution form a year later (experiment II). In both experiments, water was applied 5 times over 3 to 4 weeks duration, with each app

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3

Colombier, Mathieu [Verfasser], and Donald Bruce [Akademischer Betreuer] Dingwell. "The role of percolation threshold and water-magma interaction on volcanic eruptive style / Mathieu Colombier ; Betreuer: Donald Bruce Dingwell." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2018. http://d-nb.info/116353434X/34.

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4

Tingdal, Love, and Nils Ceder. "The behaviour of melt water within a glacial system." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-324566.

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A glacier contains of many different layers of different properties. Each layer is formed during a calendar year similar to tree rings and their layers. A glacier has two different zones, the first one referred to as accumulation zone, where the addition of snow exceeds the loss of snow. The second, the ablation zone, is the zone where the loss of snow exceeds the addition of snow. These two zones are divided by the equilibrium line, where the addition of snow equals the loss of snow. Lenses of ice, caused by the summer melt, usually divide the horizontal layers within the glacier from one ano

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5

Paul, Craig M. "Microbial and Chemical Affects on Leachate from Calcareous Soils Treated with Wastewater Effluent." BYU ScholarsArchive, 2005. https://scholarsarchive.byu.edu/etd/462.

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Increasing human populations are placing greater strain on water resources, prompting the use of treated wastewater effluent for irrigation in some areas, including the desert regions of the Western United States. To determine the potential effects of using secondary effluent for irrigation, we applied wastewater effluent and irrigation waters to natural and artificially constructed calcareous soils in greenhouse and field lysimeters, and in soil columns. The leachate from one field lysimeter contained increased fecal coliform counts than the effluent. Leachate coliform counts were decreased o

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6

Larbi, Bouthaina. "Caractérisation du transport diffusif dans les matériaux cimentaires : influence de la microstructure dans les mortiers." Phd thesis, Université Paris-Est, 2013. http://tel.archives-ouvertes.fr/tel-00966392.

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La diffusion des ions et des radionucléides au sein des matériaux cimentaires est l'un des facteurs les plus importants qui déterminent la durabilité et les propriétés de confinement de ces matériaux. Cette étude s'inscrit, en particulier, dans le domaine de confinement des déchets radioactifs de faible et moyenne activité. Elle consiste à mettre en évidence l'influence de la microstructure des mortiers, notamment la présence des granulats, sur la diffusion de l'eau tritiée au sein de ces matériaux. La démarche consiste, dans un premier temps, à sélectionner des formulations de mortiers à base

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7

Martysevich, Volha. "Seepage rates in closed basins." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002706.

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8

Baptiste, Virginie. "Stabilité et érosion du manteau lithosphérique subcontinental : Relations entre déformation, hydratation et percolation de fluides et magmas sous le craton du Kaapvaal et le Rift Est-Africain." Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20139/document.

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Les travaux réalisés durant cette thèse apportent de nouvelles contraintes sur les relations entre déformation, hydratation et percolation de fluides et/ou de magmas dans le manteau subcontinental sous un craton et sous un rift, et leurs implications sur son comportement rhéologique. Il repose sur l'analyse des microstructures, des OPRs et des teneurs en hydrogène de xénolites mantelliques du craton du Kaapvaal, et sur deux séries de xénolites provenant de différentes localités le long du rift Est-Africain (Divergence Nord Tanzanienne et SE de l'Ethiopie). Les microstructures granulaires à gro

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9

Boissier, Jean-Michel. "Etude des flux de matière organique transportée par les eaux de percolation de trois sols forestiers, à la suite de fortes précipitations orageuses simulées." Grenoble 1, 1992. http://www.theses.fr/1992GRE10112.

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Les milieux terrestres representent une source potentielle de matiere organique pour les ecosystemes aquatiques, notamment au cours de fortes precipitations orageuses. Dans ce travail, nous avons cherche a quantifier une partie des transferts entre les ecosystemes terrestres et les milieux aquatiques, en utilisant des descripteurs globaux tels que les differentes formes du carbone organique, l'activite enzymatique, les denombrements bacteriens, ainsi que des mesures physico-chimiques simples. Ces descripteurs ont ete mesures a la fois sur trois sols forestiers de montagne (deux sols bruns et u

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10

Marano, Roberto Paulo. "Manejos da irrigação e da adubação na cultura de arroz (Oryza sativa L.) visando incrementar a eficiência do uso da água e do nitrogênio." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/11/11143/tde-10062014-104527/.

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O arroz é uma das principais culturas irrigadas no mundo e com as maiores quantidades de água aplicada. No estado de Santa Fe, Argentina, o arroz é a principal cultura irrigada, com eficiências de irrigação muito baixas (25 a 40%). O método tradicional de inundação contínua (Ic) não aproveita as precipitações pluviais, que representam entre 30 a 40% da evapotranspiração real (ETr). Foram desenvolvidos experimentos em diferentes agro-ecossistemas em San Javier (Santa Fe), objetivando avaliar o arroz com aspersão (AS), inundação intermitente (In) e Ic, visando aumentar as eficiências de irrigaçã

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11

Shah, Jayesh R. "A probabilistic model of virus transport through packed beds." Ohio : Ohio University, 1989. http://www.ohiolink.edu/etd/view.cgi?ohiou1182516000.

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12

Marchese, Luciana. "Sorção/dessorção e lixiviação do herbicida ametrina em solos canavieiros tratados com lodo de esgoto." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/64/64135/tde-03092007-154220/.

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Vários estudos têm mostrado os benefícios da aplicação agronômica de lodo de esgoto sobre as propriedades físicas e químicas do solo. No entanto, poucos são aqueles que avaliam o impacto desta prática sobre o comportamento de pesticidas em solos tropicais. O principal objetivo deste estudo foi avaliar o efeito da adição de diferentes fontes de lodo (Ribeirão Preto, Franca e Jundiaí) na sorção / dessorção e lixiviação do herbicida ametrina em solos canavieiros do estado de São Paulo (Neossolo Quartzarênico Órtico Típico (RQ), Latossolo Vermelho Distrófico Típico (LVd), Argissolo Vermelho Eutrof

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13

Lechtenfeld, Markus. "Auswertung der rheologischen und optischen Untersuchungen während der Gelierung des Systems Gelatine / Wasser mit Hilfe der Perkolationstheorie - Evaluation of rheological and optical investigations during the gelation of the system gelatin/water using the percolation theory." Gerhard-Mercator-Universitaet Duisburg, 2001. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-08022001-100118/.

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In the thesis the gelation of the system gelatin / water was investigated by use of rheological and optical methods. The rheological properties were taken to describe the gelation in terms of the percolation theory. In order to determine the gel point and the critical exponents a potential law found by Stauffer and de Gennes that describes the development of the storage and loss modulus was used to express normalized percolation approches. This normalized percolation ansatzes delivers a single very exact gelation time and the information which range should be taken for the evaluation. Combinin

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14

Carrick, Sam. "The dynamic interplay of mechanisms governing infiltration into structured and layered soil columns." Lincoln University, 2009. http://hdl.handle.net/10182/1328.

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Worldwide there is considerable concern over the effects of human activities on the quantity and quality of freshwater. Measurement of infiltration behaviour will be important for improving freshwater management. This study identifies that New Zealand has a sporadic history of measuring soil water movement attributes on a limited number of soil types, although the current practical demand should be large for management of irrigation, dairy farm effluent disposal, as well as municipal / domestic waste- and storm-water disposal. Previous research has demonstrated that infiltration behaviour is g

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15

NASCIMENTO, Tarcízio. "Dinâmica da água no solo em função da vazão do gotejador em irrigação intermitente." Universidade Federal de Campina Grande, 2009. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/956.

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Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-06-13T12:44:06Z No. of bitstreams: 1 TARCÍZIO NASCIMENTO - TESE PPGEA 2009..pdf: 10510162 bytes, checksum: 327d8ac96a0edae285a8bd59ae917da5 (MD5)<br>Made available in DSpace on 2018-06-13T12:44:06Z (GMT). No. of bitstreams: 1 TARCÍZIO NASCIMENTO - TESE PPGEA 2009..pdf: 10510162 bytes, checksum: 327d8ac96a0edae285a8bd59ae917da5 (MD5) Previous issue date: 2009-08<br>CNPq<br>Este trabalho foi conduzido no campo experimental de Bebedouro, pertencente à Empresa Brasileira de Pesquisa Agropecuária (Embrapa Semiárido) com o ob

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16

Jada, Amane. "Etude de la structure et de la dynamique de microemulsions eau dans huile." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13101.

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Etude des microemulsions qui sont des solutions transparentes constituees de fines gouttelettes d'eau dispersees dans une phase continue riche en huile. Determination par declin de fluorescence, diffusion de lumiere et conductivite electrique de l'influence de la nature de l'huile, de la temperature et de la structure du tensioactif sur la taille des gouttelettes et les processus d'echange de matiere entre gouttelettes

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17

Gaffron, Anne. "Grundwasseranreicherung unter den geologischen, hydrochemischen und geografischen Bedingungen des Distrito Federal, Brasilien." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-157650.

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The Distrito Federal in Western Central Brazil is characterized by a high share of urban population and a predicted growth of population. The corresponding increasing water consumption is associated with a falling groundwater table. The existing wastewater treatment plants could reach their capacity limits due to further increasing amounts of urban wastewater in conjunction with heavy precipitation events. During these events, untreated wastewater can become a contamination source for protected resources such as soil and water. This problem can be solved by soil aquifer recharge. This is a uni

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18

Netto, André Maciel. "Transfert d'eau et de solutés dans un sol agricole hétérogène : analyse de différents types de mesures, de la variabilité spatiale et modélisation monodimensionnelle." Phd thesis, Université Joseph Fourier (Grenoble), 1998. http://tel.archives-ouvertes.fr/tel-00801928.

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L'objectif de cette étude était de caractériser les transferts d 'eau et de solutés dans un sol hétérogène pour prédire le devenir de polluants dans le sol et vers l'aquifère sous-jacente. Une série d'essais a été conduite sur le site observatoire de La Côte Saint-André. Les variabilités spatio-temporelles des variables hydriques et des concentrations de différentes molécules ( isotope de l'eau, anions, pesticide, nitrate) ont été mesurées selon différentes méthodes: suivi stationnel (sonde à neutrons, tensiomètres, cellules de prélèvements), percolation à travers un Iysimètre, prélèvements de

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19

Schellenberg, John James. "Percolation theory for switchless wafer-scale arrays." 1990. http://hdl.handle.net/1993/24150.

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20

FENG, KAO I., and 高逸峰. "Evaluation of Percolation Water Quality at a River Side Waste Disposal Site." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/96962413374505569421.

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碩士<br>國立中央大學<br>土木工程研究所<br>88<br>Because Taiwan''s habitable land is scarce, finding a land for solid waste disposal is very difficult. For a period decades, river side have been used as disposal sites of solid waste, thus causing large amounts of solid waste resides in riverbeds and might adversely affect the environment. This research focuses on side the percolation water quality from disposal sites within the river side. To establish a predicting model for policy makers to determine whether dump sites should be relocated or simply stabilized on site. Lu Chou site is taken as a case study.

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21

Mohammed, Fareed H. A. N. "Water and solute transport : modeling and application to water conservation in layered soil." Thesis, 1992. http://hdl.handle.net/1957/36742.

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Sandy soils are among the least productive soils because of their inability to store adequate water for plant growth. Their high percolation rate not only allows water to move quickly beyond the root zone, but also washes nutrients below the reach of plant roots. High evaporation occurs from the soil surface. Many acres of these soils around the world are left out of crop production. This study is a contribution to bring these soils into production by increasing their ability to hold more water in the root zone. Several promising methods of enhancing these soils were simulated, surface mulch,

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22

Mulski, Michael John. "Water vapor uptake in a heterogeneous matrix a model based on percolation theory /." 1989. http://catalog.hathitrust.org/api/volumes/oclc/22302473.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1989.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 70-72).

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23

Gaffron, Anne. "Grundwasseranreicherung unter den geologischen, hydrochemischen und geografischen Bedingungen des Distrito Federal, Brasilien." Doctoral thesis, 2014. https://tud.qucosa.de/id/qucosa%3A28452.

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The Distrito Federal in Western Central Brazil is characterized by a high share of urban population and a predicted growth of population. The corresponding increasing water consumption is associated with a falling groundwater table. The existing wastewater treatment plants could reach their capacity limits due to further increasing amounts of urban wastewater in conjunction with heavy precipitation events. During these events, untreated wastewater can become a contamination source for protected resources such as soil and water. This problem can be solved by soil aquifer recharge. This is a uni

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24

Hanson, Brian L. "The Spatial Relationship Between Septic System Failure and Environmental Factors in Washington Township, Marion County, Indiana." Thesis, 2019. http://hdl.handle.net/1805/19510.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>Underground septic systems thrive or fail based on the relationship with their local environment. This paper explores ways environmental variables such as soil type, tree roots, degree of slope, and impervious surfaces affect on-site wastewater treatment systems. It also discusses the effects each of these variables may have on a septic system, and the resulting impact a compromised system may have on the surrounding environment. This research focuses on an approximately 20 square mile area of central Washington Township in Marion Co

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