- 1. Pipe production cost management model based on graph theory
- (Content №5 2024)
- ... expense factor. The initial state of the hypergraph is specified by means of its initial marking, which corresponds to the set cipher of the batch of pipes and its weight. Further execution of the marked ...
- Created on 29 October 2024
- 2. Prediction of rock fragmentation in the Boukhadra’s mine conditions
- (Content №5 2024)
- ... corresponds to the size distribution of fragments of the blasted rock, is one of the most important indices for estimating the effectiveness of blasting works where the size of the fragments of the blasted ...
- Created on 29 October 2024
- 3. Modeling of drilling tool vibration in the process of drilling blast wells
- (Content №5 2024)
- ... is formed over the entire range of its revolutions, the frequency of high-amplitude vibration of the bit is determined, which corresponds to a certain peak order of revolutions, and at this frequency the ...
- Created on 29 October 2024
- 4. Evaluation of the institutional development of innovative activities to ensure the economy of the state
- (Content №3 2024)
- ... environment, which corresponds to the theoretical basis of the Cobb-Douglas-Tinbergen production function for the economy of Ukraine. Originality. For the first time, the mathematical apparatus of the ...
- Created on 28 June 2024
- 5. Influence of relaxation on filtering microflows under harmonic action on the layer
- (Content №2 2024)
- ... to a more significant damping of disturbances. In the parametric space of excitation frequency – relaxation time, there is a locus of points that corresponds to the maximum size of influence zone of disturbances. ...
- Created on 01 May 2024
- 6. Modeling pH changes and electrical conductivity in surface water as a result of mining activities
- (Content №1 2024)
- ... forest ponds as a landscape element affecting the biodiversity of freshwater snails. The Science of Nature, (104), 1-12. https://doi.org/10.1007/s00114-017-1495-z. 29. Zaynab, M., Al-Yahyai, R., Ameen, ...
- Created on 29 February 2024
- 7. Enhancement of sorption of the azoic dye (Azucryl Red) by natural and calcined hyper-aluminous kaolins
- (Content №1 2024)
- ... described the adsorption kinetics for all kaolins with the chemisorption process. The adsorption isotherm of the results obtained corresponds better to the Langmuir model. The maximum quantity retained ...
- Created on 29 February 2024
- 8. Research on an eco-safe filtration plant for wastewater treatment made of natural raw materials
- (Content №5 2023)
- ... modeling of hydrodynamics of mixing treated wastewater in bioponds to predict removal of residual concentrations from the filter. Methodology. A complex of modern methods of theoretical and experimental ...
- Created on 27 October 2023
- 9. Evaluation of coal mines’ rock mass gas permeability in the equivalent stress zone
- (Content №5 2023)
- ... coincides with the bearing pressure maximum in front of the longwall face. This area corresponds to the rock mass with minimal porosity and minimal filtration, which allows considering it as an envelope ...
- Created on 27 October 2023
- 10. Tectonics and gravity field structure of Central Kazakhstan
- (Content №4 2023)
- ... transformant, it was found that a wide range of changes in the values of the gravitational field corresponds to areas with minimal temperature values, whereas in areas with increased temperature values, ...
- Created on 28 August 2023
- 11. Reverse flotation process in double stage on the Algerian phosphate ore treatment
- (Content №1 2023)
- ... reagent since the P2O5 recovery content corresponds to 29.27 and 31.25 % for C1 and C2, respectively. Compared to the oleic acid and pine oil reagent, the recoveries of P2O5 were 28.85 and 30.55 % for ...
- Created on 25 February 2023
- 12. Technology of an open pit refinement under limit stability of sides
- (Content №6 2022)
- ... the safety factor corresponds to the required value according to the design standards. Practical value. An increase in the slope of the pit walls in the completion zone can be achieved using the developed ...
- Created on 25 December 2022
- 13. Monitoring as a component of the course “Life safety and labor protection”
- (Content №5 2022)
- ... educational activity, but also about the educational activity itself: whether the form of action corresponds to this stage. Properly delivered control of students educational activities allows the teacher ...
- Created on 30 October 2022
- 14. Efficiency assessment of water resources management and use by simplified indicators
- (Content №5 2022)
- ... Abstract: Purpose. Development of simplified indicators for assessment of the effectiveness of local water flow management and use in reservoirs and ponds. Methodology. The methods of integral assessment ...
- Created on 30 October 2022
- 15. Nanostructures of coal beds in the Sherubaynurinsky section of the Karaganda basin
- (Content №4 2022)
- ... C96 (135 nm) is close to that for OC coal (146 nm). The average statistical structural unit of coal corresponds to higher fullerenes with the number of carbon atoms in the cluster >100, which is a unique ...
- Created on 29 August 2022
- 16. Study of fragmentation impact of small riverbeds by artificial waters on the quality of water resources
- (Content №3 2022)
- ... ponds and less fragmentation of the river basin exceed the standards by 25 times. Originality. It is determined that among the main factors of anthropogenic impact on the state of aquatic ecosystems is ...
- Created on 29 June 2022
- 17. On the possible role of magmatism in the atasu type strathiform mineralization (Central Kazakhstan)
- (Content №2 2022)
- ... 373 4 million years, which corresponds to the middle of the Frasnian stage. The presence of three Atasu type ferromanganese deposits in the amagmatogenic Aidagarly graben-syncline also confirms this hypothesis. ...
- Created on 30 April 2022
- 18. Selective non-catalytic reduction of nitrogen oxides in the production of iron ore pellets
- (Content №1 2022)
- ... Methodology. The research results have been obtained using CFD-modeling in the ANSYS Fluent software package. To model this process, a computational domain is constructed, which corresponds in size to ...
- Created on 25 February 2022
- 19. Simulation of industrial solar photovoltaic station with transformerless converter system
- (Content №5 2021)
- ... a whole. An algorithm is proposed and an MPP tracker with volt-ampere characteristics of the photovoltaic module, which corresponds to the maximum power extraction, is synthesized on the basis of the algorithm. ...
- Created on 29 October 2021
- 20. Analysis of stress in the conveyor belt (Maxwell–element model)
- (Content №4 2021)
- ... - 081 https://doi.org/10.33271/nvngu/2021-4/074 Abstract: Purpose. For a conveyor belt, the material of which corresponds to the Maxwell-element model, to analyze the causes of the occurrence of longitudinal ...
- Created on 23 August 2021