- 21. Optimization of technological parameters of airlift operation when drilling water wells
- (Content №3 2023)
- ... average effective values of the output parameters: the density of the water-air mixture, its upward flow rate, and the air flow rate at a given velocity of the upward flow of water as it approaches the ...
- Created on 27 June 2023
- 22. Prospective methods for determining water losses from irrigation systems to ensure food and water security of Ukraine
- (Content №2 2023)
- ... month can reach up to 100 m3 per 1 m of the length. As for the monetary equivalent, in terms of average water cost being 0.12 EUR/m3, water loss in one standard retention basin with the conventional dimensions ...
- Created on 28 April 2023
- 23. Criminological characterization of environmental crimes in the field of subsurface resources protection
- (Content №1 2023)
- ... of environmental crimes in the field of subsurface resources protection in Ukraine during 2002–2021, their total recorded number (9118 crimes), annual average (456 crimes) and share in the overall crime ...
- Created on 25 February 2023
- 24. Geometry variation of ballasted railway tracks due to weather conditions
- (Content №1 2023)
- ... these measurement on tramway tracks can help to understand the identify of railway tracks’ lifetime and can be used in mainlines, industrial and mining railway tracks. Findings. The change in the average ...
- Created on 25 February 2023
- 25. Modeling of drilling water supply wells with airlift reverse flush agent circulation
- (Content №1 2023)
- ... for determining the average effective density of the mixture in terms of the height of the well, as well as the air content in it. Based on the average effective values, a method is proposed for estimating ...
- Created on 25 February 2023
- 26. Lithium and gold content in salt domes and saline lands of Western and Southern Kazakhstan
- (Content №1 2023)
- ... higher than clarkee. Out of 25 samples of the Shalkar salt dome area, Au was found in 9 samples with grades from 1.36 to 6.02 g/t. The percentage of significant samples is 36 %. The average Au content ...
- Created on 25 February 2023
- 27. Identification of determinants of corruption in government: a mar-spline approach
- (Content №6 2022)
- ... influencing corruption in Ukraine are: tax burden, general government final consumption expenditure, average monthly wage in Governance and rule of law. Originality.The proposed approach makes it possible ...
- Created on 25 December 2022
- 28. Digital technologies and their impact on economic and social spheres in Ukraine
- (Content №6 2022)
- ... the average level of income per capita. This is also evidenced by the comparison of agricultural and industrial regions of Ukraine, which indicated a significant gap in the introduction of IT in the countryside ...
- Created on 25 December 2022
- 29. Improving transport logistics of extractive industry products in the context of capacity constraints on the railways
- (Content №6 2022)
- ... a multi-product (interchangeable cargoes) transport linear programming problem with capacity constraints in the network form. The average cost of freight transportation is established by the methods of ...
- Created on 25 December 2022
- 30. The depiction of cybercrime victims using data mining techniques
- (Content №5 2022)
- ... (14%), Great Britain (13%) and Denmark (11%) are among. In 2020, on average, every 10th resident of the European Union became a cyber victim when performing financial transactions. The results of an empirical ...
- Created on 30 October 2022
- 31. Efficiency assessment of water resources management and use by simplified indicators
- (Content №5 2022)
- ... (56%) was determined, according to which the ponds will retain only 25% of the total volume of water resources. For almost all studied elements of the sample, the value of the average depth is less than ...
- Created on 30 October 2022
- 32. Estimation and forecasting of carbon dioxide emissions from coal-fired thermal power plants in Ukraine
- (Content №5 2022)
- ... gross CO2 emissions for mixtures of coals of grades A and L, G and LFG at Ukrainian TPPs in 20172021 were calculated. For 2021, the average value of for coals of grades G and LFG was 94,128 g/GJ, and for ...
- Created on 30 October 2022
- 33. Experimental evaluation of fire hazard of lithium-ion battery during its mechanical damage
- (Content №5 2022)
- ... Experimental studies showed that the maximum temperature on the lithium-ion battery case reached 715 C. In turn, the average values showed a temperature of 665 . The average cooling time to a temperature ...
- Created on 30 October 2022
- 34. Substantiating the methods for calculating the split cylindrical drums of mine hoisting machines with increased rope capacity
- (Content №5 2022)
- ... A simplified averaged model is constructed for the nodes consisting of the shell, frontal, rib strengthening and brake discs (end nodes) based on the analysis of their operation, in particular, the stiffness ...
- Created on 30 October 2022
- 35. Forecasting the technical efficiency of mobile workover rigs
- (Content №5 2022)
- ... cheaper. Their indicators are formed as a weighted average based on the analysis of an array of statistical information. The obtained values were used to indirectly determine the specific discounted costs ...
- Created on 30 October 2022
- 36. Digitalization approach in education based on applying the network readiness index as the universal metric
- (Content №4 2022)
- ... namely to adopt abstract categories of top-level criteria and to average the values of hierarchical nesting. Originality. The approach originality consists in the weight coefficients input at any level ...
- Created on 29 August 2022
- 37. Sustainable development of the economy in the conditions of the energy crisis
- (Content №4 2022)
- ... SDG are identified. There is a significant level of correlation between the Mtoe indicator and groups of SDG indicators and the fact that indicator of relative fluctuations as for average Mtoe is an integral ...
- Created on 29 August 2022
- 38. Prediction of changes in the vegetation cover of Ukraine due to climate warming
- (Content №4 2022)
- ... regularity means the following structure of interrelation between the climatic indices: along with the growing average monthly temperatures of June-September and decreasing precipitation amounts from April ...
- Created on 29 August 2022
- 39. Ecological estimation of installing geothermal systems on territories of closed coal mines
- (Content №4 2022)
- ... mines of Donbas is performed. A comparative estimation of the potential for thermal energy production by coal combustion and using geothermal modules is performed based on the analysis of average characteristics ...
- Created on 29 August 2022
- 40. Nanostructures of coal beds in the Sherubaynurinsky section of the Karaganda basin
- (Content №4 2022)
- ... C96 (135 nm) is close to that for OC coal (146 nm). The average statistical structural unit of coal corresponds to higher fullerenes with the number of carbon atoms in the cluster >100, which is a unique ...
- Created on 29 August 2022