Study of Morpho-Functional Characteristics of the Cardiovascular System According to Electrocardiography, Phonocardiography, Echocardiography in Masters Athletics.

Background: Many authors have noted the lack of knowledge on the causal relationship between the degree of physical activity, the dynamics, and outcomes of diseases, as well as the influence of sports history on the rehabilitation potential of former athletes.

Purpose: Assessment of the functional state of the cardiovascular system according to the indicators of electrocardiography, polycardiography, echocardiography and the level of physical performance in masters athletes.

Patients And Methods: The study included a main group consisting of 100 athletes, who had undergone electrocardiography, poly-electrocardiography, ultrasound echocardiography, heart rate and blood pressure measurement to determine their level of physical performance.

Conversion of Secondary C3-C4 Aliphatic Alcohols on Carbon Nanotubes Consolidated by Spark Plasma Sintering.

We analyze how the changes in the dimension of carbon nanomaterial (CNM) affect their catalytic conversion of secondary aliphatic alcohols. Carbon nanotubes (CNTs) consolidated by spark plasma sintering (SPS) were inactive in the conversion of secondary C-C aliphatic alcohols because of the «healing» of defects in carbon structure during SPS. Gas-phase treatment of consolidated CNTs with HNO vapors led to their surface oxidation without destruction of the bulk structure of pellets.

[Trends in variability of the central blood circulation in healthy individuals in response to massage of the collar cervical region].

Dynamics of slow wave variability of heart rate and left ventricular ejection fraction was studied in the course of 10-day course of collar region massage and that of zone related by reflex with circulation. It was found that such massage can produce changes in regulation of the above indices.

[Radionuclide sensitivity of a plastic scintillator].

To determine experimentally the radionuclide sensitivity of the scintillation detector is not always possible. The reasons for the selection of the methodology of computing relative radionuclide sensitivity for a through-well scintillator is the purpose of the study. The design data are supported by the experimental results using standard radioactive solutions, the correlation between the design and experimental data being within the error +/- 5%.