[Effect of radiation on the structure of model and natural biomembranes using differential scanning calorimetry].

A novel method of DSC studies of biomembranes has been proposed, making it possible to investigate the influence of ionizing radiations upon the structure of water dispersions of phospholipids and phospholipid-based systems of natural origin, e.g., rat liver homogenates and erythrocyte ghosts.

[Age-related characteristics of thymidine metabolism in healthy subjects and in patients with stomach ulcer and cancer].

Biosynthesis of pyrimidine nucleotides was intensified in proliferating tissues. Age-dependent alterations in activities of thymidine kinase and thymidine phosphorylase were found in healthy persons of 17-70 years old. Distinct increase in activity of thymidine kinase was observed in patients with gastric ulcer but the activity was decreased with ageing.

TIR-1 carbon dioxide laser system for fusion.

During recent years pulsed CO(2) lasers for fusion research have been under construction in the I. V. Kurchatov Institute of Atomic Energy and the D.

[Formation of some enzymic systems in the human fetal brain during development].

The data of studies in the monoaminoxidase, nuclease and transaminase activity in fractions of mitochondria and nuclei of the human fetus brain in the process of the fetus development evidence for the changes in the activity depending on the morphological and functional maturation of the organ during the antenatal ontogenesis. The monoaminoxidase activity increases by the time of birth. By the 40th week of development the activity of glutamic-aspartic transaminase increases as well.