Statistical Mechanics Characterization of Neuronal Mosaics

The spatial distribution of neuronal cells is an important requirement for achieving proper neuronal function in several parts of the nervous system of most animals. For instance, specific distribution of photoreceptors and related neuronal cells, particularly the ganglion cells, in mammal's retina is required in order to properly sample the projected scene. This work presents how two concepts from the areas of statistical mechanics and complex systems, namely the \emph{lacunarity} and the \emph{multiscale entropy} (i.e. the entropy calculated over progressively diffused representations of the cell mosaic), have allowed effective characterization of the spatial distribution of retinal cells.Comment: 3 pages, 1 figure, The following article has been submitted to Applied Physics Letters. If it is published, it will be found online at http://apl.aip.org

Efeito de banhos terapêuticos com formalina sobre indicadores de estresse em tambaqui.

O objetivo deste trabalho foi avaliar o efeito de concentrações terapêuticas de formalina na homeostase de tambaqui (Colossoma macropomum Cuvier 1818) por meio de índices fisiológicos

Densidade de estocagem de juvenis de tambaqui durante a recria em tanques-rede.

O objetivo deste trabalho foi determinar a densidade de estocagem mais adequada para a fase de recria de juvenis de tambaqui (Colossoma macropomum) em tanque-rede

First-order transitions and triple point on a random p-spin interaction model

The effects of competing quadrupolar- and spin-glass orderings are investigated on a spin-1 Ising model with infinite-range random $p$-spin interactions. The model is studied through the replica approach and a phase diagram is obtained in the limit $p\to\infty$. The phase diagram, obtained within replica-symmetry breaking, exhibits a very unusual feature in magnetic models: three first-order transition lines meeting at a commom triple point, where all phases of the model coexist.Comment: 9 pages, 2 ps figures include

Respostas fisiológicas de tambaqui a banhos terapêuticos com mebendazol.

O objetivo deste trabalho foi avaliar as respostas fisiológicas de juvenis de tambaqui a banhos terapêuticos com mebendazol