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229 papers · 1 filter
The continuum and narrow line region of the NLS1 galaxy Mrk 766
A. Rodriguez-Ardila, M. Contini, S. M. Viegas
We present the first spectroscopic observations in the interval 0.8-4.0 microns, complemented with HST/UV and optical spectroscopy, of the narrow line Seyfert 1 galaxy Mrk766. The…
The complex channel networks of bone structure
Luciano da Fontoura Costa, Matheus Palhares Viana, Marcelo E. Beletti
Bone structure in mammals involves a complex network of channels (Havers and Volkmann channels) required to nourish the bone marrow cells. This work describes how three-dimensional…
Energy lowering of current-carrying single-particle states in open-shell atoms due to an exchange-correlation vector potential
E. Orestes, A. B. F. da Silva, K. Capelle
Current-density-functional theory is used to perturbatively calculate single-particle energies of open-shell atoms prepared in a current-carrying state. We focus on the highest occ…
Particle emission in hydrodynamics: a problem needing a solution
F. Grassi
A survey of various mechanisms for particle emission in hydrodynamics is presented. First, in the case of sudden freeze out, the problem of negative contributions in the Cooper-Fry…
The Interacting Gluon Model: a review
F. O. Durães, F. S. Navarra, G. Wilk
The Interacting Gluon Model (IGM) is a tool designed to study energy flow, especially stopping and leading particle spectra, in high energy hadronic collisions. In this model, vale…
Impurity and boundary effects in one and two-dimensional inhomogeneous Heisenberg antiferromagnets
P. E. G. Assis, Valter L. Libero, K. Capelle
We calculate the ground-state energy of one and two-dimensional spatially inhomogeneous antiferromagnetic Heisenberg models for spins 1/2, 1, 3/2 and 2. Our calculations become pos…