- 21. Some features of drilling technology with PDC bits
- (Contens №3 2020)
- ... Subhash Kamal, & Turnad Lenggo Ginta (2014). Improving Rate of Penetration for PDC Drill Bit Using Reverse Engineering. Applied Mechanics and Materials, (607), 153-160. https://doi.org/10.4028/www.scientific.net/AMM.607.153. ...
- Created on 02 July 2020
- 22. Results of testing and modelling the “drilling rig with hydraulic vibrator ‒ rock” system
- (Content №1 2020)
- ... from https://www.onepetro.org/conference-paper/ARMA-2016-451. 8. Babapour, S., & Butt, S. D. (2014). Investigation of Enhancing Drill cuttings Cleaning and Penetration Rate Using Cavitating Pressure ...
- Created on 10 March 2020
- 23. Efficiency of preparation of mountain mass at careers of building materials
- (Geotechnical and mining mechanical engineering, machine building)
- ... the charge at breaking of strong ores under underground conditions. Development, use and ecological safety of modern granular and emulsion explosives, рр. 39‒41. 2. Osenniy, V. Ya., 2016. The penetration ...
- Created on 27 August 2018
- 24. Electrical charges as catalysts of chemical reactions on a solid surface
- (Solid State Physics, Mineral Processing)
- ... pp. 221–225. 15. Sobolev, V. V., Baskevich, A. S., Shiman, L. N. and Usherenko, S. M., 2016. Mechanism of thick metal walls penetration by high-speed microparticles. Naukovyi Visnyk Natsionalnoho ...
- Created on 27 August 2018
- 25. Water balance control within rock mass using the capacity of water-bearing formations
- (Mining)
- ... relaxation of hydrodynamic repression in time and space have been evaluated. Geomechanical processes within the nearfield area have been taken into consideration by means of simulation selection of penetration ...
- Created on 06 September 2017
- 26. Research on the influence of miners’ energy expenditure on coal mining efficiency
- (Economy and management)
- ... Huang, Chun-Wan Chen, Yu-Mei Kuo, Chane-Yu Lai, Roy McKay and Chih-Chieh Chen, 2013. Factors affecting filter penetration and quality factor of particulate respirators. Aerosol and Air Quality Research, ...
- Created on 24 July 2017
- 27. Mechanism of thick metal walls penetration by high-speed microparticles
- (Solid-State Physics, Mineral Processing)
- ... Technical University, Minsk, Belarus, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. Abstract: Purpose. Analysis and estimation of physical parameters which create conditions for microparticles penetration into ...
- Created on 19 January 2017
- 28. Determination of insulating properties of half-masks of respirators in terms of pressure difference
- (Environmental safety, labour protection)
- ... Originality. The dependence of the coefficient of test-aerosol penetration upon the value of airflow resistance of the filter and the location of the air inflow gap has been determined. Various dynamics ...
- Created on 23 June 2016
- 29. Automation research performance impact of drilling equipment construction pace openings
- (Mining)
- ... general, the dependence of the rate of penetration on the performance quotient of an explosive, charge ratio are characterized by linear functions. The dependence of placement options of periphery holes ...
- Created on 05 November 2015
- 30. Study of influence of explosion on deep layers construction intensity by means of object-oriented programming
- (Geotechnical and mining mechanical engineering, machine building)
- ... the driving speed under different conditions: driving speed drops by 1.1–1.24 times, while the more intense reduction in speed with increasing penetration rate f can be explained by the reduced performance ...
- Created on 29 March 2015
- 31. Geophysical criteria for seismic liquefaction of tailings anthropogenic soils of ore-dressing and processing enterprises of Ukraine
- (Geology)
- ... based on the penetration properties, and it will considerably increase the reliability of the prediction of the possibility of liquefaction of technogenic soils in case of seismic effects of different ...
- Created on 29 March 2015
- 32. Probabilistic estimate of PDC drill bit wear rate
- (Geotechnical and mining mechanical engineering, machine building)
- Authors: T.O. Pryhorovska, Ivano-Frankivsk National Technical University of Oil and Gas, Assistant Lecturer of Engineering and Computer Graphics Department, Ivano-Frankivsk, Ukraine S.S. Chaplinskyy, ...
- Created on 13 November 2014
- 33. Filled aluminosiloxane polymer-based coatings thermal stability and heat resistance improvement
- (Solid-state physics, mineral processing)
- ... from the change of corrosion penetration under the certain conditions. Corrosion resistance was evaluated from the change of roughness parameters and the area damaged coating. Thermal stability was determined ...
- Created on 11 May 2014
- 34. Comparative study of respirator protective efficiency in laboratory and in production environment
- (Environmental safety, labour protection)
- ... in the field studies on the dust respirator protective efficiency improvement. Methodology. Laboratory estimation of the penetration coefficient of the dust filtering respirators has been carried out ...
- Created on 21 March 2014
- 35. The study of the filtering respirator breathing resistance under cyclic current of air
- (Environmental safety, labour protection)
- ... of air taking into account the volume and frequency of person’s breathing, and the filter layer parameters, the coefficient of penetration and porosity of the filter layer. We have proved that the growth ...
- Created on 24 December 2013
- 36. Geo-ecological analysis of geological environment of oil-contaminated areas of the railway objects
- (Environmental safety, labour protection)
- ... changes in the landscape contribute to the penetration of oil into the soil and groundwater. The main contributors to pollution are the companies specialized on collection, storage, transit, and processing ...
- Created on 24 December 2013
- 37. Analytical evaluation of the degree of rock massif cooling in deep mine by means of borehole preceding the face of the development heading
- (Environmental safety, labour protection)
- Authors: V.A. Boyko, O.A. Boyko The mathematical model of cooling action for rock massif on the way of penetration of development working as a way of deep mine excavation ...
- Created on 05 January 2013
- 38. Determination of losses from the high-frequency current pulsations of power active compensators
- (Power supply technologies)
- ... of depth of penetration of hertzian wave. ...
- Created on 26 December 2012
- 39. Assessment of influence of blasting factors on pace of shaft
- (Mining)
- ... of the coefficient of efficiency of explosive, blast hole fill factor and structure of the rocks on the rate of penetration was made. Research has been done on the example of construction with the help ...
- Created on 25 December 2012
- 40. Effect of viscosity of fine-grained concrete on mixture's losses during a spraying
- (Mine and underground building)
- ... rebound, as well as the penetration depth of particles in dependence on water-cement ratio is determined. ...
- Created on 24 December 2012