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Transdutores ultra-sônicos piezoelétricos com difração limitada : simulação e construção
(Universidade Federal de São Carlos, 2006-08-18)
The importance of ultrasound limited-diffraction Bessel beams in medical
images, tissue characterization, and estimation of Doppler speed (blood flow) as
well as in many other areas of Physics has increased in the two ...
Processos de relaxação em sistemas quânticos e álgebra de operadores não-lineares
(Universidade Federal de São Carlos, 2006-02-24)
On this thesis some aspects of relaxation processes and decoherence processes using deformed
algebras of the harmonic oscillator, particularly the generalized deformed algebra (GDA algebra)
and Kerr algebra were studied.Two ...
Simulação por dinâmica molecular de óxidos alcalino-terrosos
(Universidade Federal de São Carlos, 2006-05-04)
The main subject of this work is to simulate structural and dynamical properties
of MeO type alkaline-earth oxides, where Me is an element of the family 2 (Me = Ca,
Sr and Ba). The use of the Molecular Dynamics method (MD) ...
Modelos magnéticos com frustração e diluição
(Universidade Federal de São Carlos, 2006-12-08)
In this work, we investigate the effect of dilution and frustration in the thermodynamic properties and the phase diagrams using the quasi-two-dimensional Heisenberg and Ising models. We use the Zubarev Green´s function ...
Origem dos momentos magnéticos localizados em ligas de cromo com metais de transição por oscilações de Friedel
(Universidade Federal de São Carlos, 2006-08-02)
The fundamental magnetic properties of chromium and its alloys Cr(1¡x)Nb(x) and Cr(1¡x)V(x), were investigated with the aim to achieve a better comprehension about the nature of the spin density waves. Was dened the edge ...