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DNA of golden hamster synaptonemal complex (SC) was cloned and partially sequenced. Computer analysis was performed to compare the SC DNA sequences for different families of eukaryotic genomic DNA. SC DNA is homologous to LINE family and in contrast to genomic DNA is enriched with alternative (GT/CA)n sequences and palindromes. By its ability to form… (More)
—We derive the telegraphy equation according to Weber's electrodynamics for signal propagating along a very long bidimensional wire in the shape of a rectangular strip of zero thickness. We also derive this equation for a twin lead composed by two of these parallel very long bidimensional wires facing each other. We compare this result with classical… (More)
In this work we analyze the case of resistive conductor plates carrying constant currents, utilizing surface charge distributions. We obtain the electric potential in the plates and in the space surrounding them. We obtain a non-vanishing electric field outside the conductors. We compare the theoretical results with experimental data present in the… (More)
In this work we treat a resistive toroidal conductor carrying a steady azimuthal current. We calculate the electric potential everywhere in space. We also present the electric field inside and outside the toroid and the surface charge distribution along the conductor. We compare our theoretical result with Jefimenko's experiment.
We treat the problem of two resistive plates carrying a steady current in the same direction. We consider a linear battery orthogonal to the direction of the current in the middle of the plates. We study the behavior of the surface charges close to the battery. We calculate the potential and electric field in the space outside the plates. We also consider… (More)
1. Abstract The Discrete Material Optimization (DMO)  is a technique employed in structural optimization problems , dealing with the choice of discrete candidate materials over a certain structural domain. It is based on the use of material interpolations, functions of design variables, which can be seen as weighted sums of these candidates. Its goal is… (More)
1. Abstract The aim of this work is to perform hierarchical optimization  in laminated composite structures, considering simultaneously macroscopic and microscopic levels in the design of the structure and its material. In the macroscopic level, the optimization algorithm cares with orientations and fiber volume fractions of unidirectionally reinforced… (More)