Total absorption in asymmetric hyperbolic media.

Finite-thickness slabs of hyperbolic media with tilted optical axes exhibit asymmetry properties for waves propagating upward and downward with respect to slab interfaces. Under certain conditions, asymmetric hyperbolic media acquire extreme permittivity parameters and the difference between upward and downward propagating waves becomes very large. Furthermore, both waves can be perfectly matched with the free space; such a feature makes possible the development of optically ultra thin perfect absorbers.

[Changes in the contractility of the myocardium in its various conditions in patients with congenital heart defects after surgery].

Intracardiac central hemodynamic parameters were studied and myocardial functional states were assessed in 46 patients with congenital heart disease, 20 of them had stenosed pulmonary artery; 26, presented with secondary atrial septal defect complicated with bacterial endocarditis. The mechanisms responsible for myocardial adaptation after defect correction are discussed. Attention is given to inadequacy of the performance of the heterometric mechanism of regulation due to altered elasticoviscous properties of the cardiac muscle.