Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Sorin Mihai Radu"'
Publikováno v:
Applied Sciences, Vol 14, Iss 16, p 7385 (2024)
Corrosion is a major problem in the mining industry, significantly affecting the durability and reliability of mining equipment. In order to better evaluate and understand these effects, in the first part of this study, the analysis by the finite ele
Externí odkaz:
https://doaj.org/article/5e31cd00600a49939e77ac0afcabcb5a
Autor:
Andrei Andras, Florin Dumitru Popescu, Sorin Mihai Radu, Dragos Pasculescu, Ildiko Brinas, Mirela Ancuta Radu, Daniela (Furdui) Peagu
Publikováno v:
Applied Sciences, Vol 14, Iss 10, p 4026 (2024)
Electrical contacts are important circuit components with diverse industrial applications, and their failure can lead to multiple unwanted effects. Hence, the behavior of electrical contacts is a widely studied topic in the scientific literature base
Externí odkaz:
https://doaj.org/article/ea192a0069fd4830be2692852a07638d
Autor:
Florin Dumitru Popescu, Sorin Mihai Radu, Andrei Andras, Ildiko Brinas, Mihaela-Olga Marita, Mirela Ancuta Radu, Constantin Laurentiu Brinas
Publikováno v:
Applied Sciences, Vol 14, Iss 1, p 268 (2023)
Anthropogenic activities related to mining generate both progress and a vast amount of waste that is responsible for environmental degradation. The Jiu Valley is one of the areas of Romania where mining has affected large areas of land, used to build
Externí odkaz:
https://doaj.org/article/c6f59289626c48bfaaaa07caa183c38f
Autor:
Iuliana Harbuz, Daniel Dumitru Banciu, Rodica David, Cristina Cercel, Octavian Cotîrță, Bogdan Marius Ciurea, Sorin Mihai Radu, Stela Dinescu, Sorin Ion Jinga, Adela Banciu
Publikováno v:
International Journal of Molecular Sciences, Vol 24, Iss 19, p 14722 (2023)
Cellular asymmetry is an important element of efficiency in the compartmentalization of intracellular chemical reactions that ensure efficient tissue function. Improving the current 3D printing methods by using cellular asymmetry is essential in prod
Externí odkaz:
https://doaj.org/article/29e740389fab4a8cb22120a39f7f2855
Publikováno v:
Sustainable Extraction and Processing of Raw Materials Journal, Vol 3, Iss 3, Pp 36-38 (2022)
ABSTRACT. Until recently, the European Union’s energy policy was against coal for pollution reasons, but with the start of the military war between Russia and Ukraine, coal has become one of the energy resources to reconsider. The lack or depletion
Externí odkaz:
https://doaj.org/article/c4ea03406f7f476abd23be4d91371c0f
Publikováno v:
Bulletin of "Carol I" National Defense University, Vol 11, Iss 2 (2022)
Energy security and implicitly the regional energy architecture composed of critical energy infrastructures (power substations and overhead lines at 400 kV), can undergo various mutations and transformations caused by a possible syncope in the extrac
Externí odkaz:
https://doaj.org/article/fe312f7c74834f148a736bfbb8aa9894
Publikováno v:
Romanian Journal of Petroleum & Gas Technology, Vol 1, Iss 2, Pp 67-72 (2020)
Corrosion is a chemical, biochemical or electrochemical process of degradation on the surface of metals in contact with aggressive agents. Drill pipes are constantly in contact with the drilling fluid which has a corrosive action on its components.
Externí odkaz:
https://doaj.org/article/d758323ff0394f9da356921a4d99e884
Autor:
Sorin Mihai Radu, Florin Dumitru Popescu, Andrei Andraș, Zoltán Virág, Ildiko Brînaș, Manuel-Ionuț Draica
Publikováno v:
Materials, Vol 15, Iss 19, p 6558 (2022)
In this study, the fatigue usage factors for Findley and Matake stress-based criteria were determined in the case of an MK5×2 mine hoist drum brake system subjected to cyclic maneuver braking. The study was conducted for this type of brake system, b
Externí odkaz:
https://doaj.org/article/c82aa68139b247f5abe6b614f7bc9649
Autor:
Florin Dumitru Popescu, Sorin Mihai Radu, Andrei Andraș, Ildiko Brînaș, Daniela Ioana Budilică, Valentin Popescu
Publikováno v:
Materials, Vol 15, Iss 9, p 3363 (2022)
This paper studies both the thermal and mechanical behavior of brake system models in the case of the emergency braking of a mine hoist model. Using a step-by-step approach inspired by studies conducted on small brake systems with high rotation speed
Externí odkaz:
https://doaj.org/article/7ac0b59619654a10a0499ea932fc870e
Autor:
Andrei Andraș, Sorin Mihai Radu, Ildiko Brînaș, Florin Dumitru Popescu, Daniela Ioana Budilică, Eva Biro Korozsi
Publikováno v:
Materials, Vol 14, Iss 24, p 7897 (2021)
Breakdown of stackers and excavators in opencast mines is possible because of operating, manufacturing and structural causes, and it produces high financial losses. These can be prevented by using various measures, including analyses and strength tes
Externí odkaz:
https://doaj.org/article/a9c13056c86c4d9f9aedab750aa2fed4