- 1. Methods for determining the efficiency of the grinding process
- (Contens №5 2020)
- ... allows distinguishing passing and counter processing which depend on a mutual direction of vectors of speed of cutting and circular giving. The relationship between the projection of the relative velocity ...
- Created on 30 October 2020
- 2. Enhancing efficiency of air distribution by swirled-compact air jets in the mine using the heat utilizators
- (Contens №5 2020)
- ... by a swirling-compact jet are received, which allow determining the velocity of air movement in compressed conditions of the mine in an alternating mode. Based on the numerical modeling and comparison ...
- Created on 30 October 2020
- 3. The character of disruption of the rocks surface during rapid cooling
- (Contens №5 2020)
- ... and Rock Engineering, (48), 2213-2223. https://doi.org/10.1007/s00603-015-0712-3. 5. Sun, Q., Zhang, W., & Su, T. (2016). Variation of Wave Velocity and Porosity of Sandstone after High Temperature ...
- Created on 30 October 2020
- 4. Testing of the complex for gravitational washing of sand
- (Contens №5 2020)
- ... 14. Semenenko, Ye., Kril, S., Nykyforova, N., Tatarko, L., & Medvedieva, O. (2019). Calculation of pressure loss and critical velocity for slurry flows with additive agents in vertical polyethylene ...
- Created on 30 October 2020
- 5. Rationale of use of guanidine surfactants for fire extinguishing in natural ecosystems
- (Contens №4 2020)
- ... in a stream with a high jet velocity were carried out using a water fire extinguisher VVSH-9 (produced by Makiivka Plant “Fakel” JSC). Findings. It has been established that the addition of small ...
- Created on 30 August 2020
- 6. Effect of the chirp on interactions of pure-chirped solitons
- (Contens №2 2020)
- ... Methodology. To assess the influence of the chirp on solitons interaction, our study is focused on fundamental solitons modelled by the famous Nonlinear Schrodinger Equation (NLSE) and simulated using Fast Fourier Transform. Firstly, we discuss the influence of the chirp by setting different values of group velocity dispersion (GVD) of one fundamental soliton. Secondly, we introduce the chirp on two fundamental solitons close enough to create Kerr-induced non-linearity and in the absence of GVD we study its impact on their interaction. Finally, we apply the chirp for two fundamental solitons with different phases, amplitudes and order of solitons to compare its impact on interactions in all cases possible. ...
- Created on 10 May 2020
- 7. Evaluation of blast wave parameters within the near-explosion zone in the process of rock breaking with borehole charges
- (Contens №2 2020)
- ... Methodology. The experiments involved a method to measure dynamic compressibility of bituminous coals based on the determination of both velocity of blast waves and mass velocity of particles beyond the front. A reflection method is used to construct isentropes of the explosive detonation products and their impact adiabat. ...
- Created on 10 May 2020
- 8. Thermodynamic aspect of rock destruction
- (Content №1 2020)
- ... a series of experimental studies on the density and velocity of propagation of longitudinal and transverse acoustic waves in sandstone samples under different loading conditions. Findings. According ...
- Created on 10 March 2020
- 9. Mathematical model of heat processes in terms of gas-saturated rock breaking by means of shearers and tunneling machines
- (Content №1 2020)
- ... working organ, are fire- and explosion hazardous within the velocity range of more than 0.5 m/s. Originality. Analytic expressions have been obtained to calculate the energy transferred by a ...
- Created on 10 March 2020
- 10. Results of testing and modelling the “drilling rig with hydraulic vibrator ‒ rock” system
- (Content №1 2020)
- ... Arvani, F. (2014). Influence of High Velocity Jet on Drilling Performance of PDC Bit under Pressurized Condition. American Rock Mechanics Association, 1-6. Retrieved from https://www.onepetro.org/conference-paper/ARMA-2014-7465. ...
- Created on 10 March 2020
- 11. Control of the belt speed at unbalanced loading of the conveyor
- (Contens №6 2019)
- ... defines the value of material delay in the transport system depending on the velocity defect law for conveyor belt movement. Transition period time is determined during which the output material flow is ...
- Created on 23 December 2019
- 12. Energy-saving control for traction frequency-regulated asynchronous engine of an electric vehicle
- (Contens №6 2019)
- ... power and energy losses was carried out, the electromechanical and energy processes of this FRAE for the proposed energy-saving and known (linear and parabolic) velocity trajectories were investigated. ...
- Created on 23 December 2019
- 13. Leveling of pressure flow of radial ventilator in mine ventilation system
- (Contens №6 2019)
- ... European Journal of Enterprise Technologies, 2(8), 30-38. https://doi.org/10.15587/1729-4061.2017.96774. 14. Korsun, A. S., Pisarevsky, M. I., Fedoseev, V. N., & Kreps, M. V. (2017). Velocity ...
- Created on 23 December 2019
- 14. Energy effectiveness of the differential of a device for speed change through the sun gear
- (Contens №6 2019)
- ... the performance efficiency are obtained; using the MS Excel software package, the graphical dependencies of energy efficiency on the gear ratio, the angular velocity of the sun gear and the number of stages ...
- Created on 23 December 2019
- 15. Substantiating parameters of zeolite-smectite puff-stone washout and migration within an extraction chamber
- (Contens №6 2019)
- ... minor jet velocity variation from the determined parameters results in a cut or in a fall of the washout chamber. References. 1. Nadutyi, V. P., & Kostyrya, S. V. (2018). Research results ...
- Created on 23 December 2019
- 16. Energy-saving tachograms of acceleration (deceleration) of a frequency-regulated asynchronous engine
- (Electrical Complexes and Systems)
- ... and traction loads for the proposed energy-saving and known (linear and parabolic) velocity trajectories. Electromechanical and energy transitional processes in the range of super-nominal speeds for acceleration ...
- Created on 19 August 2019
- 17. Mass flow control in a jet mill based on acoustic monitoring
- (Solid State Physics, Mineral Processing)
- ... Group, 99-108. 7. Santob, N., Portnikov, D., Mani, N., & Kalman, T.H. (2018). Experimental study on the particle velocity development profile and acceleration length in horizontal dilute ...
- Created on 19 August 2019
- 18. Developing a mathematical model of linkage parameters of air flow in a filter box
- (Environmental Safety, Labour Protection)
- ... Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. Abstract: Purpose. Using the mathematical model, to study the air velocity flow in a filter box of a respirator taking into account its inluence on ...
- Created on 16 June 2019
- 19. Optimization of general losses of the energy of the frequency-regulated pumping aggregate for start-braking regimes
- (Electrical Complexes and Systems)
- ... of the dependences of the total energy losses of a given aggregate on the duration of its acceleration and deceleration time for different velocity trajectories is established. A quasi-optimal trajectory ...
- Created on 16 June 2019
- 20. Conceptual basis of thermo-controllability in railway braking tribo pairs
- (Geotechnical and mining mechanical engineering, machine building)
- ... contacts. Manufacturing Technology, 17(2), pp. 179‒186. 3. Yevtushenko, A. A. and Grzes, P., 2015. 3D FE model of frictional heating and wear with a mutual influence of the sliding velocity and temperature ...
- Created on 24 April 2019