Buscar
Mostrando ítems 1-10 de 1009
Utilización de columnas verticales de filtración de manta y arena como pre-tratamiento de un sistema de filtración lenta
(2012-07-09)
Slow sand filtration is an efficient water treatment technique used for treating surface water with relatively low levels of contamination. Despite the slow sand filtration at pathogen, algae and cyanobacteria removal ...
Hierarchical hybrid fuzzy strategy for column flotation control
(PERGAMON-ELSEVIER SCIENCE LTD, 2010)
Column flotation is widely used in the concentration of low grade ores. Often column flotation concentrate is the final product of a very complex circuit, and therefore control of the metallurgical performance has direct ...
Reproductive biology of Macrobrachium amazonicum (Heller, 1862) populations with distinct phenotypes in Neotropical reservoirs during the 'El Niño' event
(2019-01-01)
Here, we investigated the reproductive biology (frequency and distribution patterns of ovigerous females, fecundity, reproductive output and egg size and volume) of Macrobrachium amazonicum in four populations living in ...
Factors influencing nitrogen processing in lakes: an experimental approach
(Wiley Blackwell Publishing, Inc, 2014-04)
To help improve our understanding of the nitrogen cycle in lakes, particularly in the context of climate change, we analysed total nitrogen (TN) and nitrate (NO-3 -N) data from six mesocosm experiments (in Denmark, U.K., ...
Heat and dissolved oxygen exchanges between the sediment and water column in a shallow salty lagoon
(American Geophysical Union, 2014)
Dissolved oxygen (DO) and heat exchanges across the water-sediment interface (WSI) of a
shallow lagoon are controlled by processes occurring on both sides of the WSI, particularly volumetric
source and sink on the sediment ...
Spatiotemporal distribution of organotin compounds in the coastal water of the Bahía Blanca estuary (Argentina)
(Springer Heidelberg, 2019-01-19)
Several areas within the Bahía Blanca estuary (BBE), with different maritime traffic intensity, were studied in order to confirm the presence and assess the distribution of tributyltin (TBT), dibutyltin (DBT), and monobutyltin ...
Desenvolvimento de um flotador por ar dissolvido em coluna de estágios para tratamento de águas oleosas.
(Universidade Católica de Pernambuco, 2018-02-27)
A dissolved air flotation column - FAD, commonly uses principles of operation based on the operation of a gas-liquid fluidized bed. In the present research, a column scale FAD column was developed, consisting of stages, ...
Control of absorption columns in the bioethanol process: Influence of measurement uncertainties
(Pergamon-elsevier Science LtdOxfordInglaterra, 2010)
Determination of picloram in waters by sequential injection chromatography with UV detection
(Sociedade Brasileira de Química, 2010)
This paper describes a sequential injection chromatography procedure for determination of picloram in waters exploring the low backpressure of a 2.5 cm long monolithic C18 column. Separation of the analyte from the matrix ...