- 1. Optimization mathematical model of a contact air cooler for a mine turbocompressor
- (Content №5 2023)
- ... depending on the initial conditions and operating modes of the turbocompressor. The adequacy of the theoretical studies was proved on a specially designed experimental setup. The obtained dependences make ...
- Created on 27 October 2023
- 2. Evaluation of coal mines’ rock mass gas permeability in the equivalent stress zone
- (Content №5 2023)
- ... of a methane-saturated coal mass during the mining of coal seams and the determination of technogenic gas deposit boundaries are justified. Dependences of the current and final gas permeability on the ...
- Created on 27 October 2023
- 3. Influence of drilling mud pulsations on well cleanout efficiency
- (Content №5 2023)
- ... studied, and graphical dependences of their influence on the decrease in the volume of rock particles in the annular space have been obtained. Originality. Based on the results of experimental studies, ...
- Created on 27 October 2023
- 4. Study on explosion in different cross-sectional shape charge cavity in tensile stress field
- (Content №3 2023)
- ... by tensile stresses and explosion action promotes opening of main cracks both parallel and perpendicular to cut direction. Dependences of propagation of main cracks caused by an explosion in model under ...
- Created on 27 June 2023
- 5. Increasing the energy efficiency of modes of distribution networks with photovoltaic stations
- (Content №1 2023)
- ... the characteristic regularities of changes in the spectrum and amplitudes of higher harmonic components depending on the level of inverter loading. Hyperbolic dependences of the change in the sinusoidal ...
- Created on 25 February 2023
- 6. Modeling of drilling water supply wells with airlift reverse flush agent circulation
- (Content №1 2023)
- ... parameters and their changes in the upward flow of the mixture is proposed. A model has been developed that allows analyzing the dependences of the air flow rate, the density of the mixture and the rate ...
- Created on 25 February 2023
- 7. Geomechanical substantiation of parameters for safe completion of mining the coal reserves adjacent to main workings
- (Content №1 2023)
- ... and maintain the conditions for their safe operation. Originality. New dependences of influence of the extraction sites on the main working network stability depending on the texture and mechanical properties ...
- Created on 25 February 2023
- 8. Substantiation of research results on energy efficiency of basalt crushing
- (Content №6 2022)
- ... in order to identify the results obtained and determine the dependences of technological parameters on the mechanical impact factors. Experimental studies are carried out on the example of basalts from ...
- Created on 25 December 2022
- 9. Energy efficient technologies for the mining industry
- (Content №6 2022)
- ... in the form of the main parameters that determine the efficiency of technological processes with hydro pulse exposure. The calculation dependences of values are presented of the cavitation parameter for ...
- Created on 25 December 2022
- 10. Forecasting the technical efficiency of mobile workover rigs
- (Content №5 2022)
- ... to indirectly assess its technical efficiency. Procedures for obtaining and processing input information, analytical dependences for establishing the components of the mathematical model and its solution ...
- Created on 30 October 2022
- 11. Classification of heating conditions in terms of smart control of indoor heating with the use of uncontrolled electric heaters
- (Content №4 2022)
- ... Abstract: Purpose. To reduce specific energy consumption for heating municipal and industrial buildings by introducing smart indoor temperature control taking into consideration individual dependences ...
- Created on 29 August 2022
- 12. The electrical power quality indicator – interference power factor
- (Content №4 2022)
- ... Using a combination of direct and sinusoidal (pulsating) current, the dependences of the invariance power factor on the ratio of direct and alternating components are obtained. Findings. Taking ...
- Created on 29 August 2022
- 13. Flat problem to determine the forces of destruction of pieces n disintegrators while being grabbed in thick layer
- (Content №3 2022)
- ... Abstract: Purpose. Research on analytical dependences of destructive stresses, acting on a piece of non-isometric shape at quasi-static deformation of a relatively thick layer of rock ...
- Created on 29 June 2022
- 14. Formation of the models of mining enterprise management
- (Content №3 2022)
- ... and technological subsystems were defined. Originality. While performing a particular solution of the discrete problem by Bellman method, dependences of minimizing the operations for enterprise management ...
- Created on 29 June 2022
- 15. Simulation of cargo delivery by road carrier: case study of the transportation company
- (Content №2 2022)
- ... The dependences of the number of orders received, executed, and rejected by the carrier, as well as the number of their own vehicles used by the enterprise are obtained. We also received the number of ...
- Created on 30 April 2022
- 16. Thermodynamics of the developing contact heating of a process liquid
- (Content №2 2022)
- ... a special heating plant. Basing on the averaged value of the parameters characterizing thermodynamic transformations, time periods of the process liquid heating were identified. Originality. Dependences ...
- Created on 30 April 2022
- 17. Variation coefficient of torsional vibrations of the connection nodes of vibrating machines
- (Content №6 2021)
- ... fundamental approaches of applied mechanics, machine dynamics and vibration reliability. Findings. The dependences of the eigenfrequencies of torsional vibrations of the body parts of the vibrating machine ...
- Created on 29 December 2021
- 18. Ways to reduce hydraulic losses in multistage centrifugal pumping equipment for mining and oil-producing industries
- (Content №6 2021)
- ... the distribution of hydraulic losses in the elements of a centrifugal blower with coaxial impellers is considered. Experimental dependences on the establishment of pressure flow and power characteristics ...
- Created on 29 December 2021
- 19. Forms of organization of production activity of enterprises in terms of probabilistic nature of demand
- (Content №4 2021)
- ... volumes are taken as the criterion of effect of a strategy of the manufacturer-consumer marketing interaction. Findings. Certain dependences have been obtained making it possible to calculate the maximum ...
- Created on 23 August 2021
- 20. Analytical and experimental assessment of screw centrifugal pump at improving its design
- (Content №4 2021)
- ... screw centrifugal pump. Originality. During the research, new empirical dependences were obtained that permit defining more precisely power and cavitation characteristics of low-flow high-speed ...
- Created on 23 August 2021