Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Dmitri Goljandin"'
Publikováno v:
Proceedings of the Estonian Academy of Sciences, Vol 73, Iss 1, Pp 43-49 (2024)
Waste printed circuit boards (WPCBs) â a common type of eÂwaste consisting of electronic components with a significant amount of rare and precious metals as well as glass fiber composites. The development of WPCB retreatment technology through me
Externí odkaz:
https://doaj.org/article/bed878852b80490ca7eaee5dde083cc9
Publikováno v:
Advanced Industrial and Engineering Polymer Research, Vol 6, Iss 3, Pp 226-238 (2023)
The sustainable processing of recycled products requires veritable testing during quality control for commercial application. In this research work, mechanical (ASTM D3039), compression (ASTM D5467) and impact (ASTM A370) are utilized to observe the
Externí odkaz:
https://doaj.org/article/5b49b05daf584b15979fe6952ce2478a
Autor:
Jaymin Vrajlal Sanchaniya, Inga Lasenko, Vishnu Vijayan, Hilary Smogor, Valters Gobins, Alaa Kobeissi, Dmitri Goljandin
Publikováno v:
Polymers, Vol 16, Iss 7, p 992 (2024)
This study addresses the challenge of enhancing the transverse mechanical properties of oriented polyacrylonitrile (PAN) nanofibers, which are known for their excellent longitudinal tensile strength, without significantly compromising their inherent
Externí odkaz:
https://doaj.org/article/d74a70914eb849bc887573446df4d2fc
Publikováno v:
Polymers, Vol 16, Iss 6, p 852 (2024)
This study focuses on the mechanical properties of electrospun nanofibrous mats, highlighting the importance of the characteristics of single nanofibers in determining the overall mechanical behavior of the mats. Recognizing the significant impacts o
Externí odkaz:
https://doaj.org/article/be9b0c3bb8c445aa8ad2335e79256c42
Autor:
Ervins Blumbergs, Andrei Shishkin, Karlis Markus, Vera Serga, Dmitri Goljandin, Artur Klauson, Vitalijs Abramovskis, Janis Baronins, Aleksej Zarkov, Vladimir Pankratov
Publikováno v:
Metals, Vol 14, Iss 1, p 95 (2024)
Printed circuit boards (PCBs) make up 3 to 5% of all electronic waste. The metal content of spent PCBs can reach 40%. They usually contain valuable metals, such as Ag, Au, and Pd, as well as other metals such as Cu, Sn, Pb, Cd, Cr, Zn, Ni, and Mn. Ho
Externí odkaz:
https://doaj.org/article/8e20a363b74b400ba44780def950019d
Autor:
Abrar Hussain, Vitali Podgursky, Dmitri Goljandin, Maksim Antonov, Fjodor Sergejev, Illia Krasnou
Publikováno v:
Polymers, Vol 15, Iss 16, p 3410 (2023)
The circularity of polymer waste is an emerging field of research in Europe. In the present research, the thermal, surface, mechanical, and tribological properties of polypropylene (PP)-based composite produced by injection molding were studied. The
Externí odkaz:
https://doaj.org/article/6566b9d890f04ed7a60bdcd4dfd7d5e8
Publikováno v:
Proceedings of the Estonian Academy of Sciences, Vol 70, Iss 4, Pp 508-515 (2021)
Good cementing properties, fast setting and strong thermal performance make calcium aluminate a valuable raw material for use in the production of different types of new refractory materials, e.g., heat conductive/storage materials. The main aim of t
Externí odkaz:
https://doaj.org/article/1fb63e2ff5e547dfab075030b5205900
Publikováno v:
Proceedings of the Estonian Academy of Sciences, Vol 70, Iss 3, Pp 215-220 (2021)
Circular economy is still a theoretical field. In this research, alumina ceramic material was used to measure the coefficient of friction (COF) of cotton fabric with the objective of supporting the circular economy of textile industries. A scanning e
Externí odkaz:
https://doaj.org/article/869bb376ebbb43e8aecfb6bf55283f7e
Publikováno v:
Proceedings of the Estonian Academy of Sciences, Vol 70, Iss 2, Pp 163-171 (2021)
Rough, damaged, and distorted post-consumer natural and synthetic polymers cause wear and damage to textile machinery parts, presenting a major obstacle to the quality of recycled products. In this research, TiAlN coatings were used to measure the co
Externí odkaz:
https://doaj.org/article/4911d21ca52641c69e10fa80eb1d8c83
Autor:
Ervins Blumbergs, Vera Serga, Andrei Shishkin, Dmitri Goljandin, Andrej Shishko, Vjaceslavs Zemcenkovs, Karlis Markus, Janis Baronins, Vladimir Pankratov
Publikováno v:
Metals, Vol 12, Iss 9, p 1468 (2022)
Various metals and semiconductors containing printed circuit boards (PCBs) are abundant in any electronic device equipped with controlling and computing features. These devices inevitably constitute e-waste after the end of service life. The typical
Externí odkaz:
https://doaj.org/article/d509da4b86d9474e9d44a924b66806f8