Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Sebastian Iwaszenko"'
Publikováno v:
Applied Sciences, Vol 14, Iss 12, p 5209 (2024)
Rock bursts are dynamic phenomena in underground openings, causing damage to support and infrastructure, and are one of the main natural hazards in underground coal mines. The prediction of rock bursts is important for improving safety in mine openin
Externí odkaz:
https://doaj.org/article/18cc2387841f41eaae7857570fb83bbf
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 14, Iss 3, Pp 703-713 (2022)
The risk of rockbursts is one of the main threats in hard coal mines. Compared to other underground mines, the number of factors contributing to the rockburst at underground coal mines is much greater. Factors such as the coal seam tendency to rockbu
Externí odkaz:
https://doaj.org/article/6bf14ab61849450dbc526e835ca1c4bc
Publikováno v:
Sensors, Vol 23, Iss 14, p 6488 (2023)
Pellet fuels are nowadays commonly used as a heat source for food preparation. Unfortunately, they may contain intrusions which might be harmful for humans and the environment. The intrusions can be identified precisely using immersed microscopy anal
Externí odkaz:
https://doaj.org/article/2960c6010c894c6cb5750fe169274b2c
Autor:
Sebastian Iwaszenko, Adam Smoliński
Publikováno v:
Journal of King Saud University: Engineering Sciences, Vol 33, Iss 2, Pp 95-103 (2021)
Determination of the grains size is one of the most common activities in the mineral processing industry. Application of machine vision to support the process has been the field of research for several years. Many trials start with detection of grain
Externí odkaz:
https://doaj.org/article/bf3391a59109445fba363b9b4f2ccbf7
Publikováno v:
Image Analysis and Stereology, Vol 39, Iss 2, Pp 73-90 (2020)
The segmentation of rock grains on images depicting bulk rock materials is considered. The rocks’ material images are transformed by selected texture operators, to obtain a set of features describing them. The first order features, second-order fea
Externí odkaz:
https://doaj.org/article/ba116094b9da4e57b1f8a25525750f42
Autor:
Sebastian Iwaszenko, Leokadia Róg
Publikováno v:
Minerals, Vol 11, Iss 11, p 1265 (2021)
The study of the petrographic structure of medium- and high-rank coals is important from both a cognitive and a utilitarian point of view. The petrographic constituents and their individual characteristics and features are responsible for the propert
Externí odkaz:
https://doaj.org/article/90b906fa103447dfba663b97fbb55ce8
Publikováno v:
Energies, Vol 14, Iss 21, p 6928 (2021)
Rockburst is a dynamic rock mass failure occurring during underground mining under unfavorable stress conditions. The rockburst phenomenon concerns openings in different rocks and is generally correlated with high stress in the rock mass. As a result
Externí odkaz:
https://doaj.org/article/24be8949220a4260a5754a93c2894ec7
Publikováno v:
Sensors, Vol 21, Iss 9, p 3070 (2021)
Modern dentistry commonly uses a variety of imaging methods to support diagnosis and treatment. Among them, cone beam computed tomography (CBCT) is particularly useful in presenting head structures, such as the temporomandibular joint (TMJ). The dete
Externí odkaz:
https://doaj.org/article/cd719095ca5440f6b358c2c5a8676ce1
Autor:
Sebastian Iwaszenko, Józef Kabiesz
Publikováno v:
Journal of Sustainable Mining, Vol 16, Iss 4, Pp 171-178 (2017)
Underground coal mining usually requires the development of a set of underground corridors (workings). The workings fulfill many different functions. They are used for transportation, ventilation, dewatering and even escape pathways. The proposition
Externí odkaz:
https://doaj.org/article/42e44e201ed94315bde9908049b85fe6
Publikováno v:
Materials, Vol 14, Iss 2, p 253 (2021)
The aim of the paper is to present the results of research on the carbonation process kinetics of coal combustion ashes originating from fluidized bed boilers used in power plants. Based on the thermogravimetric analysis (TGA), the hypothesis that ca
Externí odkaz:
https://doaj.org/article/a57a1a0c948e4533be6ad1552bb73143