Now showing items 1-10 of 1258
Global sensitivity analysis in the development of first principle-based eutrophication models
In this work, we formulate a dynamic first principle-based eutrophication model for a reservoir and perform global sensitivity analysis to determine most influential parameters. Both first-order and total sensitivity indices ...
Water sustainability: A systems engineering approach to restoration of eutrophic Lakes
(Pergamon-Elsevier Science Ltd, 2011-08)
We address restoration of eutrophic lakes and reservoirs through the formulation of dynamic optimization problems subject to complex PDAE systems representing biogeochemical processes in the water bodies. The model includes ...
Middle term optimal control problem in eutrophic lakes through advanced mathematical programming approaches
In this work, we address lake biorestoration through the formulation of first principles models for water quality and advanced mathematical programming techniques. Dynamic mass balances have been formulated on main ...
Systems models to evaluate eutrophication in the Broa Reservoir, Sao Carlos, Brazil
(Elsevier Science BvAmsterdamHolanda, 2007)
Paleolimnologically inferred eutrophication of a shallow, tropical, urban reservoir in southeast Brazil
We studied the eutrophication history of a tropical shallow reservoir in the So Paulo metropolitan region, southeast Brazil. We analyzed grain size, geochemistry, diatom assemblages, and land-use records in a sediment core ...
Determination of biogeochemical parameters in eutrophication models with simultaneous dynamic optimization approaches
(Pergamon-Elsevier Science Ltd, 2009-10)
This work addresses a parameter estimation problem in an ecological water quality model through a simultaneous dynamic optimization approach. The model is based on first principles and has a large number of parameters, ...
Cyclopoid copepods as bioindicators of eutrophication in reservoirs: Do patterns hold for large spatial extents?
Some species of copepods are sensitive to water quality oscillations from natural or anthropogenic causes. Information on basic ecological attributes such as abundance can be helpful in the context of hydric resources ...
Zooplankton community and their relationship with water quality in São Paulo State reservoirsComunidade zooplanctônica e sua relação com a qualidade da água em reservatórios do Estado de São Paulo
Zooplanktonic communities are important components in trophic chain considering primary producers and other levels. In addition, some species are sensitive or tolerant to organic pollution. Here we test the hypothesis that ...
Differences in dietary pattern between obese and eutrophic children
Background: Excessive consumption of energy is a decisive factor of obesity, but a simple quantitative assessment of consumption between obese and eutrophic individuals not always explains the problem, raising questions ...