Перегляд Періодичні видання НТУ "Дніпровська політехніка" по назві
Зараз показуються 121-140 з 3446
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Empirical definition of the shearing angle and chip-edge contact length when cutting
(Видавництво НТУ "ДП", 2020)Simplification of shearing angle determination during chip formation and improving the determination of chip-edge contact length with the corresponding derivation of new calculation empirical formulas. -
Energy consumption analysis for natural aggregate processing and its results (Atabey, Isparta, Turkey)
(National Mining University, 2018-09-30)Purpose. This study was conducted to determine the amount of energy and water consumption in the production of aggregates for a certain period of time and also calculated the parameters that effect energy consumption in ... -
Energy indicators of the rescue units members
(National Mining University, 2016-09-30)Purpose. To determine energy consumption by rescuers depending on the type and conditions of rescue and emergency response operations. Methods. Analytical and experimental methods have been implemented both for the study ... -
Energy-saving intensification of gas-condensate field production in the east of Ukraine using foaming reagents
(National Mining University, 2019-06-30)Purpose. Development of recommendations on the use of foaming surfactants (FSs) in the overall task of increasing energy and resource conservation of wells at the final stages of the development of gas condensate fields ... -
Engineering characteristics of Egyptian limestone
(National Mining University, 2019-06-30)Purpose. Study of physical properties such as porosity, density and mechanical properties such as compressive strength and tensile strength of Egyptian limestone based on experimental investigations. Methods. In this paper ... -
Ensuring the specified position of multisupport rotating units when dressing mineral resources
(National Mining University, 2019-12-30)Purpose. The solution of the problem for determining a specified vertical displacement of supports in a rotating unit, taking into account the yielding in the crosscut of the supporting node, as well as the peculiarities ... -
Estimation of corrosion resistance of curing mixtures based on coal-bearing rocks from Western Donbass
(National Mining University, 2016-09-30)Purpose. Substantiation of possible use of coal-bearing rocks as a replacement for a part of the filler in the preparation of shotcrete for lining of mine workings in the conditions of mineralized mine water. Methods. The ... -
Estimation of parameters of gas storage operation in inhomogeneous aquifers
(Видавництво НТУ "ДП", 2022)The purpose of the article is development and testing of a mathematical model of gas storage in a layered aquifer with a low permeability interlayer for a case of plane-parallel and axial-symmetric filtration. Methodology. ... -
Estimation of the wear rate associated with ball mill of Mahd Ad Dahab Gold Mine, Saudi Arabia (KSA)
(National Mining University, 2018-09-30)Purpose. This study aims to estimate the wear of the middle chrome grinding balls in both dry and wet grinding media. The selected ball mill for this study is located at Mahd Ad Dahab Gold Mine, Saudi Arabia. Methods. The ... -
Evaluation of exploiting barite, the critical raw material in Slovakia, and benefits of its mining
(Dnipro University of Technology, 2021-06-30)Purpose. There are several deposits of critical raw materials in the Slovak Republic, but currently only one is mined. This is a barite deposit in Spiš, which shows an ever-lower volume of exploited raw material year-on-year. ... -
Evaluation of open pit slope stability using various slope angles and element types
(National Mining University, 2018-06-30)Purpose. The objective of this study is to demonstrate a method to select the optimal slope angle related to three principal factors: safety, productivity and mining costs. Also, it aims to investigate the accuracy of ... -
Evaluation of some ceramic properties of Gadabiu clay deposit (Kwali Area Council, Abuja, Nigeria)
(National Mining University, 2019-03-30)Purpose. To evaluate some ceramic properties of Gadabiu clay deposit, Kwali Area Council, Abuja Nigeria. Methods. Soil samples from the study area were subjected to various physical and mechanical tests such as; X-ray ... -
Evaluation of some renewable energy technologies
(National Mining University, 2017-12-30)Purpose. The study aims to outline and compare various renewable energy alternatives in view of the global warming crisis and depletion of fossil fuels which cause emissions of carbon dioxide. Carbon dioxide is a major ... -
Evaluation of volumetric strain quantities and types of volumetric strain curves under failure-deformation process of hard brittle rocks
(National Mining University, 2018-12-30)Purpose. The aim of this work is to show whether or not a relationship exist among the different volumetric strain quantities and to assess also whether the volumetric quantities are related to the different types of ... -
Evolution of cracks in selvedge of the coal bed during its stationary working
(National Mining University, 2017-06-30)Purpose. To study rupturing of the coal/rock seam selvedge by natural gas-filled cracks as phenomena that prepare and initiate sudden outbursts of coal, rock, and gas during the steady movement of the face. Methods. The ... -
Experience of metal deposits combined development for South African enterprises
(National Mining University, 2017-06-30)Purpose. To solve technological and ecological problems of South Africa and other countries using the experience of Russian, Kazakh and Ukrainian miners in mining metals by the combination of traditional and new technologies. ... -
Experimental characteristics for deformation properties of backfill mass
(National Mining University, 2020-09-30)Purpose. Determining the deformation properties of backfill mass used to preserve the continuity of the coal-rock stratum enclosing mine workings. Methods. To achieve the purpose set, laboratory studies have been performed ... -
Experimental determination of angle values of the rocks full displacement when undermining them by breakage headings
(National Mining University, 2017-12-30)Purpose. Experimental determination of angle changes of full displacement of rocks by removing the breakage face from the face entry in different mining and geological conditions. Methods. On the basis of experimental ... -
Experimental research into the effect of some operation factors and rock properties on the rate of penetration
(National Mining University, 2020-03-30)Purpose. The purpose of this research is to investigate the effect of weight on bit (WOB), rotary speed (RPM), and some rock properties on the rate of penetration (ROP). Methods. Four types of rock were collected from ...