The investigation of thermal diffusivity for myocardium in conditions of bypass circulation
Journal Title: Вісник Житомирського державного технологічного університету. Серія: Технічні науки - Year 2018, Vol 81, Issue 1
Abstract
The method for determining the thermal diffusivity of the myocardium in the process of hypothermia and cardiac hyperthermia is based on noninvasive temperature control, which makes it possible to determine in each part of the myocardium the inhomogeneity of the temperature distribution under conditions of bypass circulation is proposed. The values of the minima and maxima of the temperature field on the surface of the myocardium, which determine the extreme temperature difference on the surface of the myocardium to evaluate the inhomogeneity of the temperature distribution on the heart surface, are calculated. The analysis of the distribution of the temperature field on the heart surface and in the depth of the myocardial layer, which shows significant changes in the value of the thermal diffusivity of the myocardium under conditions of cooling and warming of the heart, is performed. The article provides the data on the thermal diffusivity of the myocardium have been obtained, which provide additional information on the nature of the processes and phenomena in the heart tissues that occur when it is cooled and heated.
Authors and Affiliations
V. V. Shlykov
Keywords
Related Articles
- EP ID EP305699
- DOI -
- Views 105
- Downloads 0
Research of processes of eutrophication of Teteriv river reservoir based on neural networks mass
Methods of process control of eutrophication in water are based on water sampling, handling them in the laboratory and calculation of indexes of pond ecosystem. However, these methods have some significant drawbacks asso...
Investigation of dynamic influence of rolling stock for the track structure
Are presented the results of experimental studies to evaluate the dynamic impact of rolling stock wheels with defects in the track structure. Was accomplished of evaluation the impact of movement speeds in the range of 1...
Grinding gears by CBN wheels
The analysis of the results of comparing different methods of grinding conducted in the research showed that the method of polishing with two platelets is the least productive since it is intended for grinding high-preci...
Operational efficiency of the lighting system of bus salons
In recent years the problem of safety of people is studied primarily in aspects of natural and man-made disasters, fire, health and safety in the workplace. A problem connected with the way of life of the people, in part...
High quality CdZnTe epitaxial films: growth and properties
High-quality CdZnTe films of different compositions were obtained by liquid phase epitaxy. Growth occurred at low temperatures (500–530º C) from the tellurium solution. The growth kinetic of epitaxial films is analyzed....