- 21. 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
- 22. 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
- 23. 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
- 24. 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
- 25. 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
- 26. 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
- 27. 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
- 28. Evaluation of ultrasonic cleaning process
- (Content №3 2021)
- ... The research is based on simulation of ultrasonic wave propagation in the heterogeneous environment and subsequent analysis of the signals by using software. Findings. Dependences are established to form ...
- Created on 23 June 2021
- 29. Mathematical model of the process of drying fine dispersed materials under the influence of alternating electric current
- (Content №3 2021)
- ... Abstract: Purpose. Establishing the dependences and determining rational parameters of the process of drying fine materials by direct influence of an electric current. Methodology. In the work, theoretical, ...
- Created on 23 June 2021
- 30. Rigidity effect of the mine geophone mounting on its frequency response
- (Content №3 2021)
- ... on the frequency response of the recorded seismoacoustic signals. Methodology. Operational calculus and frequency analysis are used. Findings. The dependences of the frequency characteristics of geophones ...
- Created on 23 June 2021
- 31. Evaluation of hydraulic power of drilling string with a cavitation hydrovibrator
- (Content №3 2021)
- ... of efficiency of converting stationary fluid flow into pulsating flow. Findings. The results are presented in the form of calculated and experimental dependences of pressure, volumetric flow rate, vibration ...
- Created on 23 June 2021
- 32. Mathematical model for forecasting the process of electric power generation by photoelectric stations
- (Content №1 2021)
- ... amount of electricity generated for a certain period of time. The dependences of the amount of generated electricity by photovoltaic stations are obtained in the form of a harmonious function with reference ...
- Created on 05 March 2021
- 33. Method for optimization of switching frequency in frequency converters
- (Content №1 2021)
- ... in frequency converters and autonomous voltage inverters, the load of which is an asynchronous electric motor. The methodology is based on determining the dependences of static and dynamic power losses ...
- Created on 05 March 2021
- 34. Dynamic loads in self-aligning gear transmissions of heavy loaded machines
- (Content №1 2021)
- ... The influence of geometric and dynamic parameters of the ball mill drive on dynamic loads in the open gear transmission is investigated. The gear alignment speed dependences on the tooth mesh misalignment ...
- Created on 05 March 2021
- 35. Influence of technological process parameters on qualitative characteristics of coal thermolysis products
- (Content №1 2021)
- ... quantitative yield was determined. Originality. Analytical data on coking products have been obtained and the dependences of their quantitative and physical parameters on different applications of thermolysis ...
- Created on 05 March 2021
- 36. Analytical studies on constrained particle settling velocity in a water suspension of fly ash from thermal power plants
- (Content №1 2021)
- ... 2021, (1): 032 - 038 https://doi.org/10.33271/nvngu/2021-1/032 Abstract: Purpose. To establish analytical dependences for calculating the characteristics of the ash suspension and the velocity of constrained ...
- Created on 05 March 2021
- 37. Determining conditions of using draglines in single-tier internal dump formation
- (Content №6 2020)
- ... Abstract: Purpose. The scientific and practical task of the study is to establish the dependences of the safe distance of dragline excavators on the height of a single-tier internal ...
- Created on 22 December 2020
- 38. Influence of particle geometry on the efficiency of operation of quasistatic and inertial disintegrators
- (Content №6 2020)
- ... dependences of the key efficiency parameters of the mentioned disintegrators on the geometrical parameters of particles of processed mining rocks are obtained by the methods of generalization and dimensionless ...
- Created on 22 December 2020
- 39. Research on technology of complex processing of phosphogypsum
- (Contens №5 2020)
- ... mode for 30 h leads to an increase in the content of phosphates in the aqueous phase by 2.6–2.8 times. Dependences of the process of extraction of phosphates from urban liquid waste sludge by phosphogypsum ...
- Created on 30 October 2020
- 40. Enhancing efficiency of air distribution by swirled-compact air jets in the mine using the heat utilizators
- (Contens №5 2020)
- ... which forms swirling-compact jets, and obtain the calculated dependences for the theoretical solution of air distribution in the mine, as well as to establish the interrelation of air parameters to ensure ...
- Created on 30 October 2020