Перегляд Періодичні видання НТУ "Дніпровська політехніка" по назві
Зараз показуються 224-243 з 3493
-
Mathematical modelling of thermal stresses within the borehole walls in terms of plasma action
(Dnipro University of Technology, 2021-06-30)Purpose is the development of a mathematical model to study and describe thermal processes within the borehole wall in terms of plasma-based rock breaking. Methods. The following has been applied: theoretical analysis ... -
Mathematical substantiation of mine locomotive braking efficiency under pulsiting braking torque
(2023)A comparative analysis of a mine locomotive braking by a disc brake, which creates a constant and pulsating sinusoidal braking torque with a different number of sinusoid periods per revolution of the wheel pair, is carried ... -
Mechanism conversion process and timeliness of N2-ECBM
(National Mining University, 2018-12-30)Purpose. Based on the technology by which methane drainage is strengthened under gas injection, to examine the process of gas injection and the mechanism of action. Methods. Physical simulation experiment method, using ... -
Mechanism of explosive cavity fillinf by structure-forming material
(2012)Vertical cavity formation near the free surface with its simultaneous filling by structure-forming material is considered. Possibilities and features using oscillatory occurrences near an explosion site to control the ... -
Mechanism of magnetic field effect on hydrocarbon systems
(National Mining University, 2016-09-30)Purpose. The aim is to analyze the problem of preventing the asphalt-resin-paraffin deposits (ARPD) in the oil industry equipment and to justify application of paraffin control methods; to review modern approaches to ... -
Metallographic analysis of potential areas of destruction initiation of the zone of thermal impact of low-carbon steels after laser welding
(Видавництво НТУ "ДП", 2021)The work investigates the detection of dangerous areas of the zones of thermal impact on the basis of the research of welding joint structure formation after laser welding of low-carbon steels 09Mn2Si, 10CrNiCu, 10Mn2VNb. ... -
Methane Hydrates – Australian perspective
(National Mining University, 2016-12-30)Purpose. To analyze Australian methane hydrate resources, exploration, and production, its current state and future potential. Methods. Analysis of data published in different sources concerned with geological surveys and ... -
Method for calculation of drilling-and-blasting operations parameters for emulsion explosives
(National Mining University, 2019-09-30)Purpose. Development of a new method for calculation of drilling-and-blasting operations parameters during underground mining with application of emulsion explosives taking into account their energy characteristics as well ... -
Method of simulating rock mass stability in laboratory conditions using equivalent materials
(National Mining University, 2016-09-30)Purpose. To determine the qualitative composition of the equivalent material of a laboratory model representing Kryvyi Rih iron-ore basin ground, as well as to develop a method to determine its quantitative composition for ... -
Methods for intensification of borehole uranium mining at the fields with low filtration characteristics of ores
(Dnipro University of Technology, 2021-09-30)Purpose. Improving the efficiency of borehole uranium mining and the selection of special decolmating solutions to improve the filtration characteristics of the seam due to effective destruction, as well as by preventing ... -
Methods of granulation of molten slag and use of granulated slag water
(Видавництво НГУ, 2019)Relevance of the topic. One of the most important processes in a blast furnace, determined its operation, is slag formation. Metallurgical slag is the most valuable coproduct material. More than 50% of the volume of ... -
Microsoft paint imaging system – a photogrammetric approach to fragmentation measurement in rock and aggregate production
(National Mining University, 2020-09-30)Purpose. To evaluate the fragment sizes of blasted material using Microsoft paint imaging system. It focuses on digital imaging fragmentation analysis of rocks and aggregates using the Microsoft paint, putting into ... -
Mineral raw material disintegration mechanisms in ball mills and distribution of grinding energy between sequential stages
(National Mining University, 2020-06-30)Purpose. To study the mechanism of mineral raw material particles destruction, the rational distribution of grinding energy between successive grinding stages in ball mills, and the development of engineering methods for ... -
Mineral resources and national economic security: current features
(National Mining University, 2019-03-30)Purpose is to estimate current mineral and raw material complex and its effect on national economic security basing upon determination and analysis of the integrated index. Methods. Eleven countries of the world with the ... -
Mineralogical characterization and evaluation of chromite ore in Grevena and Kozani Vourinos massif, Western Macedonia, Greece
(Dnipro University of Technology, 2021-03-31)Purpose. Chromite samples from Aetoraches mine area in the southern part of the Vourinos complex in Western Macedonia, Greece were examined from mineralogical-geochemical perspective. Methods. Χ-ray Diffraction (XRD) ... -
Mining under the early metal in the context of Kartamysh ore occurrence of Ukrainian Donbas
(Dnipro University of Technology, 2021-09-30)Purpose is to identify process engineering of mining under the Late Bronze age (18th-13th centuries BCE) in the context of copper deposits in the Eastern Ukraine. Among other things, it concerns analysis of manufacturing ... -
Mitigating the adverse environmental impact resulting from closing down of mining enterprises
(National Mining University, 2018-09-30)Purpose is to mitigate the adverse environmental impact in the context of both territory and water resources while closing down of mining enterprises. Methods. Experiments and laboratory studies were carried out to determine ... -
Mitigation of the environmental risks resulting from diesel vehicle operation at the mining industry enterprises
(National Mining University, 2020-06-30)Purpose is to predict potentially hazardous effects of diesel vehicles of mining enterprises on the environment and to minimize the environmental risks caused by these impacts by modifying motor fuels with special ... -
Modeling hydrodynamics of the flushing fluid intermittent flow in the hydraulic system of the diamond bit
(National Mining University, 2017-06-30)Purpose. To study the effect produced by the intermittent flushing on hydrodynamic processes in the hydraulic system of a diamond bit. Methods. Mathematical modeling methods and CFD experiment. Findings. A mathematical ...