Flow In Soils
Mostrando 13-24 de 69 artigos, teses e dissertações.
-
13. Efeito da velocidade de escoamento da solução e do comprimento da coluna de solo nos parâmetros de transporte de solutos em solos argiloso e arenoso / Effect of pore water velocity and the length of soil column on solute transportation parameters in clay and sandy soils
The effectiveness of the mathematical models developed to describe the solute transport in the soil depends on the reliability of the values of the transport parameters. Although the determination of these parameters use the same transport equation, some experimental conditions such as the column length and the pore water velocity does not have standards, ma
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2011
-
14. Scaling to generalize a single solution of Richards' equation for soil water redistribution
Using scaling methods, a single solution of Richards' equation (RE) will suffice for numerous specific cases of water flow in unsaturated soils. In this study, a new method is developed to scale RE for the soil water redistribution process. Two similarity conditions are required: similarity in the shape of the soil water content profiles as well as of the wa
Scientia Agricola. Publicado em: 2011-10
-
15. Potassium doses and frequency of application to alfalfa in tropical soil.
Providing an adequate supply of nutrients is important for alfalfa production and is essential to maintain high quality and profitable yields. Potassium fertilization is essential for alfalfa production (Rassini and Freitas, 1998) and is the most common nutrient input for this crop in the high weathered, low-fertile and acids soils of tropical regions. High-
INTERNATIONAL PLANT NUTRITION COLLOQUIUM. Publicado em: 2011
-
16. ANÃLISE TÃCNICO-ECONÃMICA DA RECUPERAÃÃO DE UM SOLO SÃDICO NO PERÃMETRO IRRIGADO CURU-PENTECOSTE-CE / Techno-economical analysis of the reclamation of a sodic soil in the Irrigated Perimeter Curu-Pentecoste-CE.
In the semi-arid part of Northeastern Brazil, the highest incidences of salinized areas are observed in land subjected to intense irrigated cultivation, in the âPerÃmetros Irrigadosâ (irrigated perimeters), particularly those where is used the surface method. The experiment was performed in the âNÃcleo Dâ (D Core) of the âPerÃmetro Irrigado Curu-Pent
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/04/2010
-
17. Demografia e variação genética de Puma concolor (Linnaeus, 1771) na região nordeste do estado de São Paulo
The northeast area of São Paulo state was originally covered by cerrado and semideciduous forest, but for the last two centuries, it has experienced distinct cycles of human exploitation of its fertile soils. Despite of intensive human activities, large habitat loss and fragmentation of the native vegetation cover, pumas (Puma concolor) still inhabit remnan
Publicado em: 2010
-
18. Utilização de líquens como bioindicadores de contaminação atmosférica por radionuclídeos naturais e metais em região impactada por TENORM / The use of lichens as bioindicators of atmospheric contamination by natural radionuclides and metals in a region impacted by TENORM
The main aim of this thesis is to study the possibility of using lichen as bioincicator of atmospheric pollution in regions contaminated by radionuclides, metals and rare earth elements. Two regions were chosen, one in Pirapora do Bom Jesus, where a tin and lead industry is located, and a second one in Cubatão, where a phosphate fertilizer industrial comple
Publicado em: 2010
-
19. O papel ecológico da neblina e a absorção foliar de água em três espécies lenhosas de Matas Nebulares, SP - Brasil / The ecological role of fog and foliar water uptake in three woody species from Southeastern Brazilian Cloud Forest
Fog deposition is an important water source in several terrestrial ecosystems. Fog water intercepted by the plants can run off to the soil or be absorbed by the leaves. However, very little is known about the ecological role of fog and the mechanisms and structures involved in foliar water uptake by woody species in tropical environments. In this context, we
Publicado em: 2010
-
20. Geotechnical site characterization and study of an erosion process caused by urban setting / Investigação geotécnica e estudo de um processo erosivo causado por ocupação urbana
This dissertation presents geotechnical site characterization results of an erosion process area, in Bauru city, inland of São Paulo State, Brazil. The objective is to characterize the local soil and define the major causing factors for the erosion process evolution, which initiated with deforestation, soil sealing and discharge of pluvial and sewer water.
Publicado em: 2009
-
21. NUMERICAL MODELLING OF INFILTRATION OF HYDROCARBONS IN UNSATURATED SOILS USING THE FINITE VOLUME METHOD / MODELAGEM NUMÉRICA DA INFILTRAÇÃO DE HIDROCARBONETOS EM SOLOS NÃO SATURADOS UTILIZANDO O MÉTODO DE VOLUMES FINITOS
A large proportion of the population depends on groundwater for consumption. Thus, leakage of gasoline tanks represents a significant risk to public health besides the risk of fire and explosion in the sewer lines, due to the flammable gases. These tanks are generally located in the unsaturad soil above the groundwater level. It is therefore important to eva
Publicado em: 2009
-
22. Fuzzy logic applied to the modeling of the transfer of water in soils / LÃgica fuzzy aplicada à modelagem da transferÃncia de Ãgua em solos
Modeling water movement in the unsaturated soil requires a great number of parameters and variables such as the initial soil-water content, the saturated soil-water content, and the saturated hydraulic conductivity, which can relatively easily be assessed. Other functions such as hydraulic conductivity and matric potential which are nonlinear functions of th
Publicado em: 2009
-
23. Monitoramento e modelagem de processos hidrogeomorfológicos : mecanismos de geração de escoamento e conectividade hidrológica
This dissertation discusses the runoff generation mechanisms and hydrological connectivity, based on monitoring and modeling of hydrogeomorphologic processes in the Saci Experimental Watershed (10 ha) completely covered with forest and located within the municipality of Rio Negrinho, Santa Catarina State, Brazil. An intensive monitoring system was implemente
Publicado em: 2009
-
24. ESTUDO DA LIQUEFAÇÃO ESTÁTICA EM REJEITOS E APLICAÇÃO DE METODOLOGIA DE ANÁLISE DE ESTABILIDADE
Liquefaction is a phenomenon that happens in saturated granular soils when undergoing loadings rapid enough to produce great pore pressure increase with the consequent reduction of the effective stress and the shear strength. In the mining context, the possibility of the liquefaction occurrence in the granular tailings, when saturated, is a relevant concern
Publicado em: 2009