Перегляд Періодичні видання НТУ "Дніпровська політехніка" по назві
Зараз показуються 243-262 з 3446
-
Modeling of the power section of downhole screw motors
(National Mining University, 2017-09-30)Purpose. Downhole screw motors (DSMs) are commonly used for drilling wells of various applications. The problem is to ensure reliable operation of DSM, particularly its power section “rotor – stator”. To evaluate its ... -
Modeling the drainage facilities operation at the prospective construction site on the Dnipro floodland
(National Mining University, 2017-06-30)Purpose. To carry out predictive assessment of the hydrodynamic regime at the prospective construction site on the Dnipro floodland in order to choose an expedient drainage system and substantiate the drainage parameters ... -
Modeling the formation of high metal concentration zones in man-made deposits
(National Mining University, 2018-06-30)Purpose. To study conditions of forming the zones of high metal concentration in metal-containing man-made deposits. To assess the likelihood of metal concentration in the placer core. Methods. Analysis of the conditions ... -
Modeling the process of mineral rocks cutting with a tool made of polycrystallinе superhard materials
(National Mining University, 2017-09-30)Purpose. To analyze the process of rocks cutting by a tool made of polycrystallinе superhard materials (PSM). Methods. Mathematical modeling of rock destruction process. Findings. A model of deformation and fracturing ... -
Modelling of deep wells thermal modes
(National Mining University, 2019-03-30)Purpose. Investigation of various heat-exchange conditions influence of the tower liquid on the deep wells thermal conditions. Methods. Methods of heat-exchange processes mathematical modeling are used. On the basis of ... -
Modelling the influence of gaseous products of explosive detonation on the processes of crack treatment while rock blasting
(Dnipro University of Technology, 2021-09-30)Purpose is mathematical modeling of fracturing as well as influence of gaseous products of explosive detonation on the changes in rock strength. Methods. Mathematical model, using foundations of Griffith theory, has been ... -
Models and methods to make decisions while mining production scheduling
(National Mining University, 2019-12-30)Purpose is to develop a new approach to the design of mining operations basing upon models and methods of decision making. Methods. The paper has applied a complex approach involving approaches of decision-making theory. ... -
Modified algorithm of automatic temperature control in an electric resistance furnace for metal heat treatment
(Видавництво НТУ "ДП", 2022)The purpose is to improve the quality of heat treatment of metal in electric resistance furnaces by improving automatic temperature control in the furnace. The main quality criteria of the automatic control system is the ... -
Moving parameter research of the inclined mobile surface used for material separation
(2013)Приведено аналітичні вирази для параметрів руху деки вібраційного пневматичного се-паратора, що можуть бути використаними при дослідженні пересування частинок по по-верхні деки. -
Multi-purpose sorbent production by coal ash recycling
(National Mining University, 2016-03-30)Purpose. The main purpose of the work is to increase adsorption capacity of the carbon-containing sorbent. Methods. Adsorption and filtration processes were studied with the aid of chemical and physical methods, plotting ... -
Neural simulation-based analysis of the well wall stability while productive seam penetrating
(Dnipro University of Technology, 2021-12-30)Purpose is the development of mathematical models to evaluate deformation of parameters of the rock mass-well geological and engineering system within the anisotropic media. Methods. Both mathematical and neural modeling ... -
New data on halloysite of Ukraine
(Видавництво НТУ "ДП", 2021)A rare chromium-containing variety of halloysite has been identified in the weathering crust of the Derenyukhinskiy gabbro-peridotite massif. Its remarkable features are blue colour, Cr2O3 content in the amount of up to ... -
New technology for mineral deposits prediction to identify prospective areas in the Zhezkazgan ore region
(Dnipro University of Technology, 2021-06-30)Purpose. Exploration and predicting the prospective areas in the Zhezkazgan ore region to set up detailed prospecting and evaluation works using new integrated technologies of prediction constructions in the mineral ... -
New theory for the rock mass destruction by blasting
(Dnipro University of Technology, 2021-06-30)Purpose. To develop a new theory for the rocks destruction by blasting using a description of the formation processes of zones with various mass state around the charging cavity. Methods. The new theory for the rock mass ... -
Nickel discretization and quality review in Gllavica mine, Kosovo
(Dnipro University of Technology, 2021-03-31)Purpose. Professional approach to mineral deposit evaluation and estimation of Ni is done by modeling the ore body presenting the interest zone to be exploited. Methods. With the intensive development of professional ... -
Non-destructive testing of rock bolt fastening as an element of monitoring the state of mine workings
(National Mining University, 2019-03-30)Purpose. To substantiate the informative parameter, to develop the method and equipment for non-destructive testing (NDT) of rock bolt fastening, as an element of geomechanical monitoring of the mine workings state. Methods. ... -
Nonlinear criteria and the influence of the average principal stress on rocks destruction
(National Mining University, 2018-12-30)Purpose. Consider possible series methods of Mohr-Coulomb nonlinear criterion that takes into account stresses in the plane of fracture. Investigate the influence of the average principal stress on rocks destruction when ... -
Northeastern part of the Bilanivske ferruginousquartzite quarry: Risks of mining allotment
(Dnipro University of Technology, 2021-09-30)Purpose. Substantiation of the managerial decisions to minimize the risks of mining the Bilanivske ferruginous quartzite quarry on its northeastern margin. Methods. The legislative, methodological, cartographic and ... -
Nuclear-and-fuel power industry of Ukraine: production, science, education
(National Mining University, 2017-12-30)Purpose. To define relevant problems and propose ways for development of production, scientific and educational spheres associated with nuclear-and-fuel power industry of Ukraine. Methods. The current state of uranium and ...