Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Marius Chirita"'
Autor:
Adrian Ieta, Marius Chirita
Publikováno v:
Propulsion and Power Research, Vol 12, Iss 1, Pp 44-58 (2023)
Rotary ionic engines (RIEs) with multi-coaxial contra-rotating propellers (12.6 cm diameter) and their axial thrust are investigated in laboratory conditions, in air at atmospheric pressure, for the first time. The goal is to evaluate more advantageo
Externí odkaz:
https://doaj.org/article/76e1841c58074e1486967b4cd8fafc52
Autor:
Marius Chirita, Adrian Ieta
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022)
Abstract Significant attention has recently been given to applications of ionic wind to atmospheric propulsion. Rotational ionic engines (RIE) have also demonstrated to have potential for in-atmosphere propulsion in negative polarity. However, such d
Externí odkaz:
https://doaj.org/article/e86dafafe54649708eed246434f73c77
Publikováno v:
Magnetochemistry, Vol 9, Iss 1, p 5 (2022)
Single-crystalline magnetite (Fe3O4) particles having a size beyond the nanometric range (1 µm to 50 µm) and showing high (close to the bulk value) saturation-specific magnetization (σs = 92 emu/g), were obtained by the hydrothermal decomposition
Externí odkaz:
https://doaj.org/article/26574fa8513a42f9af31589e3d295bcd
Autor:
Claudia Geanina Farcas, Ioana Macasoi, Iulia Pinzaru, Marius Chirita, Marius Constantin Chirita Mihaila, Cristina Dehelean, Stefana Avram, Felicia Loghin, Liviu Mocanu, Virgil Rotaru, Adrian Ieta, Aurel Ercuta, Dorina Coricovac
Publikováno v:
Frontiers in Pharmacology, Vol 11 (2020)
A new class of magnetite (Fe3O4) particles, coined as “Single Crystalline Micrometric Iron Oxide Particles” (SCMIOPs), were obtained by hydrothermal synthesis. Both the single Fe3O4 phase content and the particle sizes range, from 1 µm to 30 µm
Externí odkaz:
https://doaj.org/article/e590d6e7ee9e4cfeaa0aaf0597e38636
Autor:
Marius Chirita, Adrian Ieta
Publikováno v:
Journal of Propulsion and Power. 38:893-900
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5d1cc0c562f07c65482a1b1a33ca3a8
https://doi.org/10.2514/1.b38521
https://doi.org/10.2514/1.b38521
Autor:
Ioan Grozescu, Marius Chirita, Mihaela Luminita Kiss, Cecilia Savii, Adrian Ieta, Radu Banica
Publikováno v:
Materials Letters. 158:214-217
Layered and ordered nanostructured hematite rhombohedrons of submillimetric size were obtained by heating submillimeter single crystalline ferrous carbonate (FeCO 3 ), at 600 °C in air. The topotactic transformation and the increase of density led t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46a4bfed2c946176de64160a645001bb
https://doi.org/10.1016/j.matlet.2015.06.020
https://doi.org/10.1016/j.matlet.2015.06.020
Publikováno v:
Particulate Science and Technology. 34:571-579
Here, we focus on the obtaining of mesocrystalline submillimeter-sized (150/50 µm) rhombohedral hematite (α-Fe2O3) by thermal treatment in air of single crystalline submillimeter-sized (150/50 µm) rhombohedrons of ferrous carbonate (FeCO3). Mass s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddb39a34ab97bca2fd1d54eaf454ece5
https://doi.org/10.1080/02726351.2015.1090508
https://doi.org/10.1080/02726351.2015.1090508
Publikováno v:
AIP Conference Proceedings.
The ensembles of mesocrystalline α-Fe2O3/Ag nanosheets were obtained in two steps. First we obtained mesocrystalline α-Fe2O3 rhombohedrons with submillimeter dimensions through thermal treatment of rhombohedral ferrous carbonate single crystals, in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::120dc5df73011da20ac19e6f1f732112
https://doi.org/10.1063/1.4972370
https://doi.org/10.1063/1.4972370
Autor:
Adrian Ieta, Marius Chirita
Publikováno v:
Journal of Electrostatics. 100:103352
A new rotary ionic engine with possible applications to in-atmosphere propulsion was produced. We designed EHD propeller-counter-electrode systems in which the propeller spins and flies. Much more EHD thrust can be generated in negative polarity befo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffb7f1a16055831e42e3ecb778b1cea7
https://doi.org/10.1016/j.elstat.2019.05.004
https://doi.org/10.1016/j.elstat.2019.05.004
Autor:
Aurel Ercuta, Marius Chirita
Publikováno v:
Journal of Crystal Growth. 380:182-186
Porous crystals of magnetite and vacancy-ordered maghemite, rhombohedron-shaped, reaching 150 μm in size, and having remarkably large specific surface area (88.55 m2/g for magnetite, 40.14 m2/g for maghemite) were obtained via topotactical conversio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f9ae25158db5d3899acfde2bf2ca4e9
https://doi.org/10.1016/j.jcrysgro.2013.06.003
https://doi.org/10.1016/j.jcrysgro.2013.06.003