Now showing items 86001-86010 of 86013
Study of perturbation integrals applied to the dynamics of spacecrafts around Galilean moons
Several scientific missions have been proposed for a deeper exploration of planetary systems. These missions require a lot of specialized techniques in order to reach a better understanding of the dynamics involved in their ...
Use of composite SiO2 (62-68)-MgO + CaO (29-39) in ceramic protection mass injection machines in the iron notch and liquid slag hole in blast furnaces
The article describes the use of protection ceramic composed of SiO2 (62-68)-MgO+CaO (29-39) in the frontal region of machines that inject refractory mass to stop pig iron running and liquid slag in blast furnaces. The new ...
Effect of iron and vanadium on the phase transition of titanium dioxide obtained by polymeric precursor method
The titanium dioxide phase formation is dependent on the synthesis method, temperature of calcination and modifiers insertion. By using chemical methods, such as Polymeric Precursor Method, the organic impurities or extrinsic ...
Infiltrated spinel-based ceramic (MgAl2O4) for dental application
This work developed a ceramic material for dental application, spinel-base (MgAl2O4), a ceramic material with recognized translucency. Spinel powders were uniaxially pressed at 100 MPa and pre-sintered in order to obtain ...
MgAl2O4-ZrO2(Y2O3) ceramic composite: Sintering and characterization
Spinel is a ceramic material of excellent translucence when sintered in high densification, however, its low sinterability and toughness difficulty limit its use as an interesting material for dental applications. The use ...
Graphite dispersions as a basis for development of high thermal conductivity fluids
Both conductivity and thermal resistivity measurements of commercial graphite dispersions in non-aqueous polar fluids and non-polar fluids were carried out. Fluids exhibiting different densities as: mineral oil, ethylene ...
Energy balance in the watershed of Ipê, Northwestern São Paulo State, Brazil
The region of Ilha Solteira, in the Northwestern of São Paulo State, has been undergoing significant changes in agricultural land use and cover since 2006, as pasture fields have been replaced by sugarcane crop. This drastic ...
Diagnostic Support for Alzheimers Disease through Feature-Based Brain MRI Retrieval and Unsupervised Distance Learning
Initial stages of Alzheimer's disease are easily confused with the normal aging process. Additionally, the methodology involved in the diagnosis by radiologists can be subjective and difficult to document. In this scenario, ...
Dublin core and CIDOC CRM harmonization
Transmission lines model with different basic structures applied to transient electromagnetic simulations
Models based on lumped elements are simple ones to represent systems composed by distributed parameters when models with lumped elements use a lot of these elements. However, such mentioned models usually present numerical ...