We propose a new hybrid quasicontinuum model which captures both long and short-wave instabilities of crystal lattices and combines the advantages of weakly nonlocal (gradient) and strongly nonlocal continuum models. To illustrate the idea we consider a simple one-dimensional lattice exhibiting commensurate and incommensurate short-wave instabilities and compute stability limits for the homogen...

This special issue of the Schizophrenia Bulletin focuses on three brain areas hypothesized to play a role in the etiology of schizophrenia--the frontal lobes, the basal ganglia, and the temporal lobes. Contributors to the issue review evidence from brain-imaging, post-mortem, and psychopharmacological studies that support the involvement of each of these important brain areas in schizophrenia. ...

congenital lobar emphysema is a rare cause of respiratory distress during infancy which is cured by surgery. we are reporting three cases of congenital lobar emphysema with different presentations of the disease. chest x-ray was the basis of diagnosis but confirmatory lung computerized tomography was also used. the emphysematous lobe was left upper lobe in two infants and right upper and middle...

Preliminary results obtained by a code aimed to the analysis of three-dimensional (3D) instability of axisymmetric melt flows in Czochralski crucible are described. The CPU time and the computer memory necessary for the comprehensive 3D stability analysis by a second-order finite volume method are estimated. Basing on a certain experimental configuration, we give an example of the stability dia...