First observations of the dust grain crystal formation in the plasma generated by the slowing-down proton beam have been described. The crystal being formed has a simple cubical lattice with the mean ...distances between particles for different gases (He, Ne, Ar, Kr, Xe) from 90 to 140 μm. For a calculation of parameters of plasma the model of kinetic processes was developed. Results of our simulation showed that the anisotropic dust particles interaction can be the main physical reason of the appearance of the crystal like structure.
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The statistics of arising of freak waves on a surface of an ideal heavy fluid is studied. The freak waves arise during the evolution of statistically homogeneous initial conditions with a Gaussian ...probability. Simple equation describing evolution of “almost” 1-D water waves is derived using important property of vanishing four-wave interaction.
Chronic ischemic mitral regurgitation is a frequent and severe complication after myocardial infarction. Its pathophysiological mechanisms explain the left ventricle remodeling, induce the papillary ...muscles displacement and change the angle of inclination of the valve leaflets. The presence of ischemic mitral insufficiency is independently associated with mortality and morbidity after myocardial infarction. In the recent years, at the National M. M. Amosov Institute of Cardiovascular Surgery, 42 patients underwent surgical combined interventions on the mitral valve and the left ventricle. All the patients underwent left ventricle plasty. The most frequent complication in the postoperative period was acute cardiovascular failure, which occurred in 25 (59.5 %) cases: 6 (42.9 %) cases after mitral defects plasty and 19 (67.8 %) patients after the valve replacement. The second most frequent complication was respiratory failure of II-III degree. In this patient cohort, respiratory failure in the postoperative period occurred in 5 (11.9 %) patients. Postoperative mortality after combined resection of the left ventricular aneurysm and surgical repair of ischemic mitral insufficiency was 9.5 % (4 cases). The difference in mortality after mitral valve plasty (14.3 %) and valve replacement (7.1 %) was statistically insignificant. Left ventricular aneurysm combined with ischemic mitral insufficiency contributes to the severity of the patients’ condition. Prognostic mortality (EuroSCORE) in this category of patients is 33.5 ± 5.4 %. Choosing the method for mitral insufficiency surgical repair does not affect postoperative mortality. Mortality is due to the initial severity in this group of patients.
We present a modification of the continuous-time hybridization-expansion quantum Monte Carlo method, which allows one to take into account spin rotational symmetry. At present, studies of real ...compounds by means of dynamical mean-field theory employ an approximate form of the Coulomb interaction which breaks the rotational symmetry, leading, in particular, to considerable overestimation of the Curie-Weiss temperature. The obtained temperature dependence of magnetic susceptibility and Curie-Weiss temperature for the three-band model are in good agreement with the exact solution. Owing to its computational efficiency, the presented method is suitable for investigation of magnetic properties of real compounds with strong electronic correlations.
Today synergetics is an interdisciplinary trend, exploring general patterns in various phenomena. Philosophical comprehension of old age as the final path of human development includes, first of all, ...the attitude of a person to the process of aging and to his/her own finiteness. The body is no longer able to fulfill all the functions and to meet the social requirements of mobility and general health due to the physiological changes, and the soul is “in the teeth of death” facing the necessity of addressing the existential problem of the meaning of life.
Hoy la sinérgica es una tendencia interdisciplinaria, que explora patrones generales en varios fenómenos. La comprensión filosófica de la vejez como el camino final del desarrollo humano incluye, en primer lugar, la actitud de una persona hacia el proceso de envejecimiento y hacia su propia finitud. El cuerpo ya no puede cumplir con todas las funciones y cumplir con los requisitos sociales de movilidad y salud general debido a los cambios fisiológicos, y el alma está "en los dientes de la muerte" ante la necesidad de abordar el problema existencial del significado de vida.
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