The stainability of neural elements is determined during the various stages of tissue preparation which precede impregnation. The hypothesis (Romanes, 1950) that variations in the physiological state of the neurones at the time of fixation might influence the stain was examined. Feeding and anaesthesia did not influence the staining of gastric nerve fibres under the conditions of the experiment...

The most popular instrumentation used in the Electrical Engineering, presents edges that in the presence of an important electric field, act like as concentrating of electrostatic load and for they turn in the points with major probability of acting as way of an electrostatic discharge. The study from the electrostatic point of view of the behaviour of an edge, presents a singularity, since in ...

In this paper, we describe a technique for the computation of augmented surface patches from stereo images. The stereo vision data is represented as patchlets, which are planar surface elements that have a position, surface normal, size, and confidence measures on the position and normal direction. To estimate the patchlet parameters, we use probabilistic image alignment. Whereas the patchlet g...

A pseudospectral method for the analysis of diffractive optical elements is presented. This method is a fullvectorial direct solution of the time-domain Maxwell equations based on a spectral approximation of the spatial derivatives employed within a multidomain framework. The method exhibits little numerical dispersion, and only a few points per wavelength are needed to accurately resolve the p...

Boundary elements method is well-suited for computational acoustics. The main profit it brings is reduction in number of unknowns compared to FEM. However, application of BEM to sound scattering problems has shown, that this advantage is lost in case of high frequency waves. High frequencies require larger number of elements which contradicts the initial purpose of using BEM in solvers and may ...

An optimal-order multigrid method for solving second-order elliptic boundary value problems using PI nonconforming finite elements is developed.

In eukaryotic cells, the DNA material is densely packed inside the nucleus in the form of a DNA-protein complex structure called chromatin. Since the actual conformation of the chromatin fiber defines the possible regulatory interactions between genes and their regulatory elements, it is very important to understand the mechanisms governing folding of chromatin. In this paper, we show that supe...

In this paper, we use Petrov-Galerkin elements such as continuous and discontinuous Lagrange-type k-0 elements and Hermite-type 3-1 elements to find an approximate solution for linear Fredholm integro-differential equations on $[0,1]$. Also we show the efficiency of this method by some numerical examples