The utilization of solar radiation to obtain high-temperature heat can be realized by multiplying it on the illuminated surface with solar concentrating technologies. High-temperature heat with significant energy potential can be used for many technological purposes, e.g. the production of heat, cold or electricity. The following paper presents the results of the experimental study, on the operation of the parabolic linear absorber in the parabolic concentrator solar system. The parabolic mirror with an aperture of 1 m and a focal length of 0.25 m focuses the simulated radiation onto a tubular absorber with a diameter of 33.7 mm, which is placed in a vacuum tube. The length of the absorber is 1 m. The installation is illuminated by the solar simulator, which allows to carry out tests under constant and repeatable conditions. The simulator consists of 18 metal halide lamps, with a nominal power of 575 W each with a dimming possibility of up to 60%. The paper presents preliminary results of heat absorption by the analysed absorber, temperature increment, collected heat flux, and the pressure drop crucial for the optimization of the absorber geometry.

To study the principle of loss and heat at the end region of large 4-poles nuclear power turbine generator, 3D transient electromagnetic field and 3D steady temperature field finite element (FE) models of the end region are established respectively. Considering the factors such as rotor motion, core non-linearity and time-varying of electromagnetic field, the anisotropic heat conductivity and different heat dissipation conditions of stator end region, a 50 Hz, 1150 MW, 4-poles nuclear power turbine generator is investigated. The loss and heat at the generator end region are calculated respectively at no-load and rated-load, and the calculation results are compared with the test data. The result shows that the calculation model is accurate and the generator design is suitable. The method is valuable for the research of loss and heat at the end region of large 4-poles nuclear power turbine generator and the improvement of the generator’s operation stability. The method has been applied successfully for the design of the larger nuclear power turbine generators.

Kvitka‑Osnovyanenko was the first prose writer of the new Ukrainian literature, the conventional starting point for which is dated as 1798, when Ivan Kotlyarevsky’s Aeneid was published. In 1833‑1834, Hryhoriy Kvitka‑Osnovyanenko began to publish his stories and short novels in Ukrainian. They served as a starting point for all subsequent prose in the Ukrainian language. A structural analysis of Kvitka’s prose has shown that his method of text construction still had much in common with folk tales: texts are constructed on the basis of elemental repetitions or binary oppositions. However, the author has already started to make important semantic shifts, introducing types of characters and collisions alien to folklore text per se. Thus the effect of deautomatization of the folklore perception is reached. The meaning of some texts, which were previously considered “humorous”, in the light of what has been said, acquires a meta‑narrative meaning: A Soldier’s Portrait and The Konotop Witch, have episodes that expose their main compositional technique (‘priyom’) and demonstrate the author’s conscious play with the narrative patterns of folklore.