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Study of the influence of the rare earth elements (Ce3+ and Ce4+) concentration on the siloxanes coating applied on the copper surface
(2012-12-01)
This work studied the influence of the rare earth (Ce3+ and Ce4+) elements concentration in polysiloxane flints deposited on copper by dip-coating process, and evaluated their resistance in a 3.5 wt.% NaCl medium. Classical ...
Natural configurations for formation flying around triangular libration points for the elliptic and the bicircular problem in the Earth-Moon system
(2014-01-01)
The concept of Satellite Formation Flying (SFF) means to have two or more satellites in orbit such that their relative positions remain constant or obeying a certain dynamical configuration along the trajectory. This concept ...
The aster mission: Exploring for the first time a triple system asteroid
(2011-12-01)
2001 SN263 is a triple system asteroid. Although it was discovery in 2001, in 2008 astronomical observation carried out by Arecibo observatory revealed that it is actually a system with three bodies orbiting each other. ...
Some reflections on the future of the water quality of the corumbataí River basin, São Paulo state, Brazil
(2007-12-01)
The waters of Corumbataí River in the middle and eastern part of São Paulo State, Brazil, are extensively used for human consumption; their water quality has been modified mainly due to increasing pressure caused by ...
Temporal generalization of an artificial neural network for land use/land cover classification
(Spie-int Soc Optical Engineering, 2018-01-01)
This work evaluated the performance of an Artificial Neural Network (ANN) in the temporal generalization of the Land Use and Land Cover (LULC) classes in the surroundings of the Salto Grande reservoir, located in a highly ...