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The dissolved uranium concentration and 234U/238U activity ratio in groundwaters from spas of southeastern Brazil
(2017-01-01)
This paper describes the natural radioactivity due to 238U and 234U in 75 water sources from spas located in 14 municipalities in São Paulo and Minas Gerais states, Brazil. These waters are extensively utilized for drinking ...
Amazon River dissolved load: temporal dynamics and annual budget from the Andes to the ocean
(Springer Verlag, 2016-06)
The aim of the present study is to estimate the export fluxes of major dissolved species at the scale of the Amazon basin, to identify the main parameters controlling their spatial distribution and to identify the role of ...
Pacific white shrimp, red drum, and tilapia integrated in a biofloc system: Use of tilapia as a consumer of total suspended solids
(2021-01-01)
The objective of this study was to evaluate tilapia, Oreochromis niloticus, for the biological control of suspended solids in an integrated biofloc technology (BFT) system rearing red drum, Sciaenops ocellatus, and Pacific ...
Sistema Automático para Cultivos Hidropónicos Domésticos, a través de la Medición de Iones Inorgánicos.
(Ciencia Digital Editorial, 2019)
Assessment of water quality using principal component analysis: a case study of the Marrecas stream basin in Brazil
(2020-01-01)
Monitoring water quality is a fundamental process to ensure proper anthropogenic usage and environmental protection of this resource. This study collected monthly measurements of 9 parameters (pH, Temperature, BOD, Total ...
Temporal variability and annual budget of inorganic dissolved matter in Andean Pacific Rivers located along a climate gradient from northern Ecuador to southern Peru
(Elsevier, 2018)
In Ecuador and Peru, geochemical information from Pacific coastal rivers is limited and scarce. Here, we present an unedited database of major element concentrations from five HYBAM observatory stations monitored monthly ...
Temporal and Spatial Variability of Limnological Characteristics in Areas under the Influence of Tilapia Cages in the Chavantes Reservoir, Paranapanema River, Brazil
(Wiley-Blackwell, 2013-12-01)
The influence of tilapia cages on limnological characteristics of the Chavantes Reservoir, Paranapanema River, Brazil, was investigated in March and June 2007. Principal components analysis was used to compare the transparency; ...