- 1. Determination of technological parameters for hydromechanical amber extraction in the Polissia region of Ukraine
- (Content №3 2024)
- ... to be Q = 72 m³/hour. The optimal pipeline diameter was selected as D = 0.3 m, and the optimal slurry velocity was determined to be v0 = 2.75 m/s. The methodology for determining the technological parameters ...
- Created on 28 June 2024
- 2. Optimal parameters of blasting destruction in the Ben Azouz quarry based on study of strength limestone rock
- (Content №3 2024)
- ... the compressive strength of the rock (UCS, Uniaxial Compression Strength) based on simple regression is the model containing P-Velocity as an independent variable with a coefficient of determination R2 ...
- Created on 28 June 2024
- 3. Determining the parameters of the functioning for a nonlinear ballistic system in a real external environment
- (Content №2 2024)
- ... influence of the projection of the velocity function on the ordinate axis in relation to the component on the abscissa axis is introduced. The problem is reduced to the solution of a related system of ...
- Created on 01 May 2024
- 4. Influence of relaxation on filtering microflows under harmonic action on the layer
- (Content №2 2024)
- ... Universytetu. 2024, (2): 025 - 031 https://doi.org/10.33271/nvngu/2024-2/025 Abstract: Purpose. Investigation of the velocity fields of non-equilibrium fluid filtration in a layer under harmonic action ...
- Created on 01 May 2024
- 5. Three-dimensional density model of the mantle beneath the Ukrainian shield
- (Content №2 2024)
- ... using a basic set of one-dimensional seismic tomographic velocity models calculated for 21 mantle domains in the depth range from 50 to 2,600 km. The process of converting the P-wave velocity model into ...
- Created on 01 May 2024
- 6. Method of controlling the volume of combustion products at different boiler loads
- (Content №1 2024)
- ... excess. The mechanism of such an effect due to the increase in the quantity and velocity of flue gases is suggested. A parameter determining the volume of flue gases produced per unit calorific value of ...
- Created on 29 February 2024
- 7. Efficiency and seismic safety of constructing underground structures in complex rock masses
- (Content №6 2023)
- ... Geometry and Water on Velocity of Detonation of Heavy ANFO Explosive. International Symposium on Earth Science and Technology, (pp. 102-107). Fukuoka, Japan: Kyushu University. Retrieved from https://www.researchgate.net/publication/369658191. ...
- Created on 23 December 2023
- 8. Data analysis solutions to improve blasting efficiency in mining
- (Content №6 2023)
- ... reinforcement model. Mining Technology, 117(4), 161-167. https://doi.org/10.1179/174328609X417260. 2. Barton, N. (2007). Rock Quality, Seismic Velocity, Attenuation and Anisotropy. Taylor & Francis ...
- Created on 23 December 2023
- 9. Theoretical model of random freight flow distribution in the conveyor transport line of the coal mine
- (Content №6 2023)
- ... calculated objectively on the basis of the reliable output data of random freight flow in the conveyor transport line, taking into account the velocity of minerals transportation, including a perfect theoretical ...
- Created on 23 December 2023
- 10. Liquefaction of industrial zone against earthquake loading using laboratory and field measurements
- (Content №5 2023)
- ... for shear wave velocity in different types of soil were collected and studied, where the majority of these correlations necessitated the use of standard penetration tests in the field. Indeed, two boreholes ...
- Created on 27 October 2023
- 11. 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
- 12. Patterns of air mixture movement in the operating area for the annular ejector of pneumatic transportation system
- (Content №2 2023)
- ... mixture flows mixing in the transport pipeline. In the work, the velocity distribution is also examined for dispersed phase and air phase of air mixture during its loading and accelerating in the transport ...
- Created on 28 April 2023
- 13. Modeling of drilling water supply wells with airlift reverse flush agent circulation
- (Content №1 2023)
- ... in the upstream. The effective values of the airflow rate, the density of the water-air mixture and the velocity of its upward flow are established. A method for estimating the effective values of technological ...
- Created on 25 February 2023
- 14. Determining the parameters of stratification cavity in rock mass to extract mine methane
- (Content №6 2022)
- ... to mining area; and stope advance velocity as well as its length. Practical value. Based upon the method by Professor O.V.Savostyanov, an algorithm has been proposed to define possible mine methane accumulations ...
- Created on 25 December 2022
- 15. Seismic geotraverse "Granit" (Ukrainian part). Reanimation
- (Content №4 2022)
- ... velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine). Tectonophysics, 371(1-4), 81-110. https://doi.org/10.1016/S0040-1951(03)00211-7. 4. Stovba, S.N., Tolkunov, ...
- Created on 29 August 2022
- 16. Complex measurement of parameters of iron ore magnetic separation based on ultrasonic methods
- (Content №3 2022)
- ... of attenuation, absorption and scattering are introduced. Findings. The dependence of the phase velocity of asymmetric Lamb waves on the wall thickness of the magnetic separator was obtained. As a result ...
- Created on 29 June 2022
- 17. Numerical studies on thermochemical processing of peat in a fixed layer
- (Content №1 2022)
- ... are formed. Originality. It is shown that when the velocity of peat particles decreases, a slag bed is formed between the zone of maximum heat release and the grate, which consists of cooled ash particles, ...
- Created on 25 February 2022
- 18. Co-firing of gas coal dust fine particles and synthetic peat gas. Part 1. Simulation of processes of steam-air gasification of peat in a fixed bed and combustion of dust and gas mix in a stream
- (Content №6 2021)
- ... (6): 057 - 065 https://doi.org/10.33271/nvngu/2021-6/057 Abstract: Purpose. To build a model of solid fuel gasification in a fixed bed taking into account the velocity of particles, ...
- Created on 29 December 2021
- 19. Signal processing application for vibration generated by blasting in tunnels
- (Content №5 2021)
- ... of blasting vibrations by a filtering method should reduce the peak velocity of the particles by separating the signals and eliminating the interference in the initial signal. Keywords: blasting, vibration ...
- Created on 29 October 2021
- 20. Investigation of the effect of several parameters on the applicability of magnetic separation method
- (Content №4 2021)
- ... separator, centrifugal force, flux density, angular velocity References. 1. Haddad, J. (2020). Experimental Study of the Effect of Ball Diameter, Rotating Mass and Input Grain Size of Silica Sand on the ...
- Created on 23 August 2021