Zobrazeno 1 - 10
of 40
pro vyhledávání: '"OPREA, RĂZVAN"'
Publikováno v:
Lucrările conferinţei de cercetare în construcţii, economia construcţiilor, urbanism şi amenajarea teritoriului / Paper proceedings of the research conference on constructions, economy of constructions, architecture, urbanism and territorial development. :7-22
Externí odkaz:
https://www.ceeol.com/search/chapter-detail?id=611531
Publikováno v:
Urbanism. Arhitectură. Construcţii / Urbanism Architecture Constructions. 8(4):341-354
Externí odkaz:
https://www.ceeol.com/search/article-detail?id=603171
Autor:
Oprea, Răzvan1, Cuculici, Roxana1, Săndulache, Iulian1, Popa, Vasile1, Constantinescu, Horia1
Publikováno v:
Proceedings of the International Multidisciplinary Scientific GeoConference SGEM. 2020, p627-634. 8p.
Autor:
OPREA, Răzvan1 constantin.oprea@geo.unibuc.ro
Publikováno v:
Annals of the University of Bucharest. Geography Series / Analale Universitatii Bucuresti. Seria Geografie. 2022, Vol. 71, p167-169. 3p.
Publikováno v:
MATEC Web of Conferences, Vol 178, p 05004 (2018)
It is a well-known fact that the raising of the pantograph is followed by an electric arch. The reasons for this phenomenon are the oscillations of the pantograph and the oscillations of the contact line. Initially, these oscillations are not coupled
Externí odkaz:
https://doaj.org/article/822e93d1576440d98d3ff7ecb0582209
Publikováno v:
MATEC Web of Conferences, Vol 112, p 07023 (2017)
A distinctive feature of the application proposed in this work is the occurrence of simultaneous contact patches on a single wheel, i.e., the multi-point contact case. A difficulty in the study of this phenomenon is that the contact areas depend on t
Externí odkaz:
https://doaj.org/article/c47150e8946447caba896219da35b17c
Autor:
OPREA, MONICA1 oprea_monadria@yahoo.com, OPREA, RĂZVAN2 opreaconstrazvan@yahoo.com
Publikováno v:
Annals of the University of Bucharest. Geography Series / Analale Universitatii Bucuresti. Seria Geografie. 2017, p127-141. 15p.
Autor:
POPA, Vasile1 popavasile2005@yahoo.com, OPREA, Răzvan C.1 opreaconstrazvan@yahoo.com, COCOŞ, Octavian1
Publikováno v:
Annals of the University of Oradea, Geography Series / Analele Universitatii din Oradea, Seria Geografie. Jun2014, Vol. 24 Issue 1, p5-13. 9p.
Publikováno v:
Annals of the University of Bucharest. Geography Series / Analale Universitatii Bucuresti. Seria Geografie; 2020, p193-205, 13p
Publikováno v:
Annals of the University of Bucharest. Geography Series / Analale Universitatii Bucuresti. Seria Geografie. 2012, p17-24. 8p.