Heat capacity of α-AlH(3) and α-AlD(3) at temperatures up to 1000 K.

The densest α modification of AlH(3) and AlD(3) is thermodynamically stable at high hydrogen pressures. At ambient pressure, α-AlH(3) and α-AlD(3) rapidly and irreversibly decompose to Al and H(2) or D(2) gas when heated to about 420 and 520 K, respectively. In the present paper, the heat capacities at constant volume (C(V)) and at constant pressure (C(P)) are calculated for α-AlH(3) and α-AlD(3) at a pressure of 1 atm and temperatures 0-1000 K using the phonon densities of states determined earlier by inelastic neutron scattering at helium temperatures (Kolesnikov et al 2007 Phys.

[Echocardiographic assessment of cardiac pump function using afterloading characteristics].

Seventy five patients and twenty healthy individuals were investigated by using cardiac ultrasound technique, followed by mathematical simulation of changes in left ventricular pressure during contraction. The findings show that the afterload characteristics based on a wealth of evidence for cardiac and left ventricular performance, unlike the conventional central hemodynamic parameters and cardiac phasic indices, enable the occult circulatory disorders to be revealed and the cardiac compliance with the arterial system to be assessed.

[Bicomponent analysis of the contractile capacity of the heart in ischemic lesions of the myocardium (experimento-clinical study)].

A study was made of cardiac pumping capacity in animals with local myocardial ischemia (9 experiments on cats), in 25 healthy persons and 21 patients suffering from coronary heart disease with stage I-IIA circulatory insufficiency using afterload characteristics (ALC). The latter reflected correlation between left ventricular pressure and aortic blood flow in constant blood filling and in a given inotropic heart condition. For combined assessment of ALC one should know its two parameters: power (maximum pressure in the zero blood flow) and rate (maximum blood flow rate in zero antipressure).