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The paper presents the results of the studies of thermal properties of nanocrystalline superionic Na x Cu 1.75 S (x=0.1, 0.15, 0.2, 25) compositions, and preliminary results of Na 0.1 Cu 1.75 S using as energy stored cathode material in Na-ion half-cell with NaPF 6 electrolyte and Na anode. The compositions contain a few copper sulfide phases: monoclinic chalcocite Cu 2 S , orthorhombic anilite Cu 1.75 S , triclinic roxbyite Cu 1.74÷1.82 S , also the compositions can contain monoclinic Na 2 Cu 4 S 3 , orthorhombic Na 2 S , cubic Cu 2 O as inclusion phases. The sizes of powder particles lie in the range from 10 to 113 nm. Differential scanning calorimetry revealed in Na 0.1 Cu 1.75 S the endothermic thermal effects with critical temperatures near 123 • C, 42 • C and 442 • C, caused by structural transitions in copper sulfide. Fourth endothermic peak at 323 • C presumably belongs to Na 2 S phase. The minimum for the Fermi level at about 420 • C is found with using of the e.m.f. E of the electrochemical cell of the Cu/CuBr/Na 0.10 Cu 1.75 S/Pt , which corresponds to minimum for the carrier concentration. This conclusion correlates well with the observed conductivity minimum at about 410 • C. Electrode material Na 0.10 Cu 1.75 S achieved a significant specific energy density 146.5 mAh/g in half-cell assembled from the cathode active material, electrolyte (NaPF 6 in 0.5 mol PC) and Na anode.

The article presents the results of many years of research on the effect of foliar dressing with complex fertilizers and humate on photosynthetic activity and productivity of potato plants of Gala and Latona varieties. The following options have been studied: 1) without treatment (control); 2) dressing with Ekorost humate at a dose of 0.2-0.4 l/ha; 3) dressing with micronutrient Strada N at a dose of 3-5 l/ha; 4) dressing with micronutrient Strada R at a dose of 3-5 l/ha. The treatment was carried out twice during the growing season: when full shoots appeared and 14 days after the first one. Determination of the leaf area and calculation of the photosynthetic potential were carried out according to the VNIIKH method (1967) three times during the growing season in the following phases: budding, flowering, and the beginning of withering away of lower leaves. The crop was harvested by the method of continuous harvesting of the accounting area of the plots with weighing. The effectiveness of the studied agrotechnical methods has been proved. The best variant of the investigated ones is the use of Strada R. The plants of this variant formed a more powerful assimilation apparatus and had the highest photosynthetic potential, which ultimately affected the yield of tubers. The increase in the yield of two varieties of potatoes was 21.8-23.1 % in relation to the control. Gala variety turned out to be more responsive to the action of vegetative treatments in comparison with Latona variety.

Objective: The problem of creating effective labour productivity is relevant for public and private sector organisations due to market volatility and determines important in addition to the introduction of optimal tools in the working process, the creation of the favourable environment in the staff team and as a consequence of the prevention of emotional burnout among employees. Background: In conditions of social and economic instability in the CIS countries and competition in the labour market in a wide range of specialities, it leads to the increase of competencies and requirements for employees of the industry, and as a consequence increases their responsibility to the society. Method: A retrospective research method was applied to identify cause-and-effect relationships and patterns between all components of the phenomenon of emotional burnout in the labour process. Results: In the course of the research, a standardised Professional Burnout questionnaire was used. Also, criteria and a grading scale were identified, the results processed using statistical methods in the SPSS 17 data processing programme. Conclusion: On the basis of the results of the research conducted, practical recommendations were formulated, the implementation of which will help reduce the level of emotional burnout among employees of the organisation

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