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Study of massif stress-strain state while mining the series of flat strata
(National Mining University, 2017-03-30)Purpose. To determine the effect of rock overworking and underworking on massif stress-strain state while extracting the series of flat coal seams. Methods. Mining, geological and technical conditions; current approaches ... -
Study of Methods and Development of Technological Scheme for Heat Removal from Rock Waste Dump
(Trans Tech Publications, 2017-11)The aim of this paper is to study the methods and develop technological scheme for thermal energy removal from coal mine rock waste dumps. The prospects of renewable energy sources development in Ukraine are analyzed. A ... -
Study of numerical simulation method modelling gas injection into fractured reservoirs
(National Mining University, 2019-06-30)Purpose. Fractures are the main flow channels in fractured reservoirs. The rapid flow characteristics of gas are outstanding in fractures. It is a major technical problem in the current oilfield development to calculate ... -
Study of protective properties of half-masks respirators used by miners
(National Mining University, 2016-12-30)Purpose. To define coefficient of protection of filtering respirators with elastomeric half-masks PR-7 in conditions of coal mines. Methods. Antidust respirators applied at mining enterprises of Ukraine were tested for ... -
Study of rock displacement with the help of equivalent materials using room-and-pillar mining method
(London : Taylor & Francis Group, 2012)Field study made with the help of equivalent materials to determine minimum dimension of interchamber and barrier pillars and limiting chamber span was carried out. Modeling was made for gypsum quarry. -
Study of the characteristics of mineral suspensions for the development of equipment for the separation of finely dispersed rock mass
(Журфонд, 2020)Calculation of hydraulic devices and apparatuses for extracting valuable components from mineral suspensions is based on determining the speed of the constrained motion of particles. For calculation of the speed, it is ... -
STUDY OF THE FORMATION MECHANISM OF GAS HYDRATES OF METHANE IN THE PRESENCE OF SURFACE-ACTIVE SUBSTANCES
(2017)Досліджено вплив поверхнево-активних речовин на механізм утворення газових гідратів метану. Визначено значення критичної концентрації міцелоутворення (ККМ) розчинів дібутілфенола, обробленого окисом етилену (ДБ), а також ... -
STUDY OF THE FORMATION OF MULTICOMPONENT TITANIUM COATINGS ON STEELS UNDER NON-STATIONARY TEMPERATURE CONDITIOS
(2018)Study of the formation of multicomponent titanium coatings on steels under non-stationary temperature conditios. -
Study of the plasma flow interaction with the borehole surface in the process of its thermal reaming
(National Mining University, 2018-09-30)Purpose. Study of the plasma flow interaction with the borehole surface in the process of its thermal reaming for determination of transient temperature distribution along the borehole surface and the average coefficient ... -
Study of the process of coal transfer by means of auger effector within the aggregate of boiling bed
(National Mining University, 2017-12-30)Purpose. The development and analysis of operation of a boiling bed aggregate with auger effector to feed and transfer coal inside a working chamber in the process of its thermal destruction. Methods. Method of graph ... -
Study of the quality of information transmission in LTE networks
(2023)The main directions of the evolution of mobile communication systems are to improve the quality of multimedia services, reduce subscriber costs and reduce operating costs. Currently, the most popular technology that ... -
Study of the Stability of Dominant Species of Vegetation in the Conditions of Coal Mine Dumps
(Видавництво НТУ "ДП", 2018) -
Study of Thermal Processing of Carbon-Containing Material in a Fluidized Bed
(Видавництво НГУ, 2017) -
Study on low-grade galena-barite ore beneficiation in Khuzdar, Balochistan, Pakistan
(National Mining University, 2019-03-30)Purpose. Galena and barite are the principal minerals of lead and barium respectively. Both minerals are used extensively in industries because of their distinct properties. In complex poly metallic ores, it is always ... -
Study on the start-up of not salient-pole of synchronous engine
(НГУ, 2013)The start of synchronous electric machines (SEM) intended for the mechanisms with large inertia moment must be carried out from the reduced voltage, with this aim start devices of different kinds and structures including ... -
STUDY SKILLS AS A WAY TO INDEPENDENT LANGUAGE LEARNING
(Common Europe: Ukraine and Poland under Conditions of Globalization and European Integration, Wydawnictwo Wyzszej Szkoly Bankowej, Poznan – Wroclaw, 2012) -
Studying a correlation between characteristics of rock and their conditions
(National Mining University, 2020-09-30)Purpose is to determine dependences of velocities of elastic waves in isotropic rocks and anisotropic waves with orthotropic and transverse-isotropic symmetry upon pressure and depth to develop evaluation criteria and ... -
Studying a crack initiation in terms of elastic oscillations in stress strain rock mass
(National Mining University, 2016-06-30)Purpose. Deriving the criterion of a crack (joint) initiating under simultaneous effect of the rock stress state and elastic oscillations generated by an external source is the research purpose. Determining the quantitative ... -
STUDYING REGULARITIES OF AIR MOVEMENT THROUGH A FILTERING HALF-MASK
(2018)Objective is to study the available approaches to calculate pressure difference of filtering respirators, to determine theoretical dependences of its change in terms of different filtering rate according to ...