- 1. Mathematical modeling and analysis of heat transfer in structures with foreign elements
- (Content №1 2026)
- ... conduction, asymmetric unit functions were used. As a result, the thermal conductivity coefficient for a structure with a foreign semi-through cylindrical element is represented as a unified whole. This ...
- Created on 27 February 2026
- 2. Land management and land quality assessment tools for effective land resources management in the context of sustainable development
- (Content №5 2025)
- ... of Pedotransfer Functions for Predicting Saturated Hydraulic Conductivity of Soils in Ukraine. Visnyk of V. N. Karazin Kharkiv National University, Series “Geology. Geography. Ecology”, 52, 68-78. https://doi.org/10.26565/2410-7360-2020-52-05 ...
- Created on 25 October 2025
- 3. Mathematical simulation of brushless high-speed permanent magnet motor
- (Content №4 2025)
- ... high-speed applications. IEEE Transactions on Applied Superconductivity, 26, 1-1. https://doi.org/10.1109/TASC.2016.2514342 6. Parivar, H. (2022). An overview of high-speed permanent magnet synchronous ...
- Created on 26 August 2025
- 4. Modern geoelectric surveys along the Mali Heivtsi ‒ Tiachiv profile of the Transcarpathian Trough
- (Content №2 2025)
- ... variations of 1,800 s indicates the influence of the submeridional regional magnetovariation Carpathian anomaly and deep electrical conductivity anomalies. The joint analysis of the magnetotelluric sounding ...
- Created on 26 April 2025
- 5. Analysis of natural and man-made factors of landslide development in the Carpathian region using GIS
- (Content №5 2024)
- ... Neural Networks (ANNs), and Multiple Linear Regression (MLR) for Electrical Conductivity Prediction in Aquifers in the Gallikos River Basin, Northern Greece. Hydrology, 8(3), 127. https://doi.org/10.3390/hydrology8030127. ...
- Created on 29 October 2024
- 6. Mathematical model for heat transfer during underground coal gasification process
- (Content №5 2024)
- ... duration and on the medium density, thermal conductivity coefficients, specific heat capacity of gas and coal, specific calorific value and temperature of coal combustion, initial coal temperature and ...
- Created on 29 October 2024
- 7. The research of industrial production dynamics based on the tools of chaos theory
- (Content №2 2024)
- ... Brovarets’, O. O., & Chovnyuk, Yu. V. (2020). The use of fractal analysis methods in the study of electrical conductivity of soils and the yield of agricultural crops. Silʹsʹkohospodarsʹki mashyny, ...
- Created on 01 May 2024
- 8. Influence of relaxation on filtering microflows under harmonic action on the layer
- (Content №2 2024)
- ... depending on the frequency of the harmonic action, the ratio of the piezoconductivity coefficients of the layer, and the relaxation time. Profiles of the dependences of the size of the influence zone on ...
- Created on 01 May 2024
- 9. Modeling pH changes and electrical conductivity in surface water as a result of mining activities
- (Content №1 2024)
- ... Universytetu. 2024, (1): 122 - 129 https://doi.org/10.33271/nvngu/2024-1/122 Abstract: Purpose. To develop comprehensive models for predicting the pH and electrical conductivity of surface water in Maiganga ...
- Created on 29 February 2024
- 10. Mathematical models for determining and analyzing thermal regimes in mining industry mechanism structures
- (Content №6 2023)
- ... conductivity is described as a whole using asymmetric unit functions. This makes it possible to solve a differential equation with singular coefficients in both linear and nonlinear boundary value problems ...
- Created on 23 December 2023
- 11. Long-term thermal productivity of polystyrene concrete in a new composite wall in a fixed formwork
- (Content №3 2023)
- ... (2001). State Standard B V.2.7-105-2000 Construction materials and products. Method for determining thermal conductivity and thermal resistance under stationary thermal regime. Kyiv. Retrieved from https://ukrsmeta.ua/wp-content/uploads/files/DSTU/33.DOC. ...
- Created on 27 June 2023
- 12. Heavy metals removal using natural zeolite adsorption from Tigris river water at Samarra city (Iraq)
- (Content №6 2022)
- ... present study showed that the conductivity and turbidity of water decreased from 1596 to 727 c/cm, from 343 to 22 naphthalene unit (NTU), respectively, and turbidity decreased from 633 to 491 ml/L. The ...
- Created on 25 December 2022
- 13. Nanostructures of coal beds in the Sherubaynurinsky section of the Karaganda basin
- (Content №4 2022)
- ... layer, the physicochemical properties of nanomaterials occur: a change in the crystalline (supramolecular) structure of coal; a change in its electronic structure and its electrical conductivity; change ...
- Created on 29 August 2022
- 14. Numerical studies on thermochemical processing of peat in a fixed layer
- (Content №1 2022)
- ... of the dispersed phase and the rate of heterogeneous and homogeneous chemical reactions by changing the proportion of O2 or H2O air enrichment. Keywords: fixed bed, coal, peat, thermal conductivity, steam ...
- Created on 25 February 2022
- 15. Co-firing of gas coal dust fine particles and synthetic peat gas. Part 1. Simulation of processes of steam-air gasification of peat in a fixed bed and combustion of dust and gas mix in a stream
- (Content №6 2021)
- ... was numerically investigated. The composition of the generator gas at the reactor outlet was determined. Keywords: fixed bed, coal, peat, thermal conductivity, steam-air gasification, conductive ...
- Created on 29 December 2021
- 16. Improvement of oil field development using enhanced oil recovery methods
- (Content №6 2021)
- ... intervals. Increased sweep efficiency and pressure at the wellhead at the beginning and at the end of the conformance control indicate a decrease in the conductivity of high-permeability formation intervals. ...
- Created on 29 December 2021
- 17. The optimal method for assessing gas reserves based on the calculation of gas hydrodynamic parameters
- (Content №2 2021)
- ... Zhao, Y.L., Escobar, F.H., Hernandez, C.M., & Zhang,C.P. (2016). Performance analysis of a vertical well with a finite-conductivity fracture in gas composite reservoirs. Journal of Engineering and ...
- Created on 29 April 2021
- 18. Modern development of the market of ceramic construction products of Ukraine in the context of the European integration process
- (Contens №3 2020)
- ... They have also proved that: 1) due to the use of large-format ceramic blocks, it is possible to obtain a warm wall with low thermal conductivity of 0.16–0.20 W/K, which in turn allows increasing the heat ...
- Created on 02 July 2020
- 19. Simulation of heat transfer process in a multilateral cylindrical shell taking into account the internal heat sources
- (Contens №3 2020)
- ... of solving boundary value problems of the theory of thermal conductivity was applied, which includes the application of the method of reduction, the concept of quasi derivatives, the method of separation ...
- Created on 02 July 2020
- 20. Innovative technique for evaluating electric power distortion in cable transmission line
- (Content №1 2020)
- ... the electrical energy transmission process. Methodology. PI-section equivalent circuit of the cable line is used. Insulation conductivity is assumed to be infinitely small. Using the results ...
- Created on 10 March 2020