Search - Науковий вісник НГУ

1. Recycling of barite ore tailings into porcelain: microstructure and dielectric properties: (Content №6 2023); ... samples, encompassing dilatometric properties, apparent density, and porosity, are determined. Findings. Dielectric characterization, conducted within the frequency range of 102–105 Hz, demonstrates ...; Created on 23 December 2023
2. 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
3. Predicting zones of increased water inflows in local folded structures: (Content №4 2023); ... and sandstones) and average values of open porosity, fracture porosity and absolute permeability were calculated. The obtained data indicate the formation of a fractured zone with improved filtration and ...; Created on 28 August 2023
4. Geological structure and oil-and-gas occurrence of Prorva group of the Southern deposits of the Caspian Depression in terms of geophysical information: (Content №3 2023); ... studying permeability and porosity of the reservoir rocks as well as fluids saturating them. Practical value. The obtained data have become the basis to assess the remaining carbohydrate reserves, ...; Created on 27 June 2023
5. Taxonomy on the production processes and characterization of powder metallurgy used in additive manufacturing process: (Content №6 2022); ... 6. Li, R., Liu, J., Shi, Y., Du, M., & Xie, Z. (2010). 316L stainless steel with gradient porosity fabricated by selective laser melting. Journal of Materials Engineering and Performance, 19(5), 666-671. ...; Created on 25 December 2022
6. Nanostructures of coal beds in the Sherubaynurinsky section of the Karaganda basin: (Content №4 2022); ... coal dust. We have considered only a part of the nanostructure issues: porosity and gas content, explosiveness and moisture content of coal seams, and have shown that all physical phenomena in a thin layer ...; Created on 29 August 2022
7. On the mechanism of ionization of atoms at compression of a substance by front of the converging shock wave: (Content №3 2022); ... Fortov, V.Ye., Frolova, A.A., Khishchenko,K.V., Charakhchyan, A.A., & Shurshalov, L.V. (2010). On the mechanism of pressure increase with increasing porosity of media shock-compressible in conical ...; Created on 29 June 2022
8. Productivity of seedlings of Scots pine on alluvial sands of natural and man-made origin: (Content №3 2021); ... current requirements of ISO, and their physical and water properties using volumetric cylinders, followed by the calculation of their density, porosity, as well as the coefficients of water content and ...; Created on 23 June 2021
9. Electric arc spraying of cermet coatings of steel 65G-Tic system: (Content №2 2021); ... was investigated. The porosity, microhardness of the phases in the coating and its bond strength were determined. Originality. For the first time, composite cermet electric arc coatings of the steel 65G-TiC ...; Created on 29 April 2021
10. The character of disruption of the rocks surface during rapid cooling: (Contens №5 2020); ... and Rock Engineering, (48), 2213-2223. https://doi.org/10.1007/s00603-015-0712-3. 5. Sun, Q., Zhang, W., & Su, T. (2016). Variation of Wave Velocity and Porosity of Sandstone after High Temperature ...; Created on 30 October 2020
11. Development of new composite cement based on waste rocks from Djebel Onk phosphate deposit (Tebessa-Algeria): (Contens №2 2020); ... 5. Deboucha, N., Leklou, N., Khelidj, A., Pertue, A., & Oudjit, M. N. (2017). The effect of blast furnace steel on the porosity of the mortar. In 35th university meetings of civil engineering of the university association of civil engineering. Nantes (FRANCE), May 22–24, 2017. Retrieved from https: org/rugc17.sciencesconf.org/. ...; Created on 10 May 2020
12. The influence of the moisture on the physical and mechanical properties of the sandstone (Separate Unit “Kapitalna” coal mine”, Donbas): (Contens №2 2020); ... References. 1. Mikhailov, N., & Popov, S. (2015). Experimental and theoretical study of influence of mechanochemical effects on porosity, permeability, elastic and strength properties of reservoir rocks. Georesources. Geoenergetics. Geopolitics, 1-26. ...; Created on 10 May 2020
13. Optimization of water-physical properties of sandy soils of natural-technogenic origin: (Content №1 2020); ... porosity, as well as absolute and relative humidity of sandy soils and their mixtures with different content of loam and humus mass of zonal soils were determined by conventional methods in soil science. ...; Created on 10 March 2020
14. Formation of water-physical properties of soil in recultivated areas: (Environmental safety, labour protection); ... balanced parameters of physical structure of the soil. The residual effects of its physical abuse appear to change the density compilation, porosity and, consequently, the quantitative characteristics ...; Created on 02 April 2016
15. Some features of the development and application of nitrogen-compressor stations in mines: (Environmental safety, labour protection); ... simulation of methane from coal in view of the unloading wave and disclosure porosity changing voltages. Rock pressure problems”, Sb. nauchnykh trudov DonNTU, Donetsk, no.3, pp. 30. 4. Патент №34114 ...; Created on 30 October 2015
16. INFLUENCE OF HETEROGENEOUS CRYSTALLIZATION CONDITIONS OF ALUMINUM ALLOY ON ITS PLASTIC PROPERTIES: (Solid-state physics, mineral processing); ... of the metal with TiCN ultradisperse powders on its mechanical properties and formation of porosity in shaped casting of SC51A (AK5M) alloy solidified in the chill mold during implementation of the corresponding ...; Created on 30 October 2015
17. Geotechnology features of high quality martite ore from deep mines of Kryvyi Rih basin: (Mining); ... (mean3.68 ⋅103kg/m3), porosityranges from 20 to 38% (mean 30%) and uniaxial tensile strength of compression varies from 0.8 up to 10 MPa (mean 4.6 MPa). We have developed the classification of geotechnical ...; Created on 29 March 2015
18. Sand production prediction in pressure depleted reservoirs: (Mining); ... the porosity of the formation. These two factors synergistically exert influences on the critical drawdown pressure of sand production. Based on the generalized Hoek’s law, the theoretical formula representing ...; Created on 29 March 2015
19. Study of the imperfectly elastic rock deformation behavior: (Geotechnical and mining mechanical engineering, machine building); ... of experimental data of velocity of longitudinal and transverse acoustic waves. Methodology. We have involved a series of experimental studies of density, porosity, and determination of the velocity ...; Created on 14 January 2015
20. Estimation of gas saturation in nearfield reservoir bed by geop hysical data: (Geology); ... of the Petroleum Geology Department, Kyiv, Ukraine Abstract: Purpose. To create a method of porosity determination for gas-saturated clastic rocks that consider the influence of the radial ...; Created on 13 November 2014

Start
Prev
1
2
Next
End

Науковий вісник НГУ

Archive

Most read

NEW ON THE SITE

Visitors

Guest Book

Registration data

Contacts