Výsledky vyhledávání - "M. Karayanni"

Evaluation of the Wettability and the Petrophysical Properties in Carbonate Reservoirs by Advanced NMR and MRI Techniques

Autor: Vassilios C. Kelessidis, M. Karayanni, Michael Fardis, Zoya Heidari, Artur Posenato Garcia, Grigorios Matenoglou, Thomas G. Maris

Publikováno v: Day 2 Tue, November 08, 2016.

Carbonate rocks are among the dominant oil reservoir formations. Due to their heterogeneity, their petrophysical properties are difficult to be evaluated. Magnetic Resonance, applied as low-field Nuclear Magnetic Resonance (NMR) or Magnetic Resonance

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::151a0ccd4973853b0e00e98868b143b6
https://doi.org/10.2118/183531-ms

Zobrazit plný text záznamu

A 1H NMR Study on Acidized and Non-acidized Carbonate Rock Cores to Explore Correlations Between Pore Geometry and Fluid-Solid Interactions

Autor: M. Fardis, D. Hill, M. Karayanni, K. Dong, A. Anastasiou, L. Lagkaditi, Vassilios C. Kelessidis, G. Papavassiliou

Publikováno v: Proceedings.

Carbonate reservoirs are heterogeneous systems at multiple length-scales, a characteristic that influences strongly their petrophysical properties and oil recovery procedures [1]. Wettability for example, capillary pressure as a function of water sat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d67936b858969df11632dd793715e4e1
https://doi.org/10.3997/2214-4609.201412010

Zobrazit plný text záznamu

11B NMR Study of Pure and Lightly Carbon-Doped MgB2 Superconductors

Autor: Taishi Takenobu, M. Pissas, Kosmas Prassides, M. Karayanni, Konstantinos Papagelis, Yoshihiro Iwasa, G. Papavassiliou, M. Fardis

Publikováno v: Journal of Superconductivity. 18:521-528

We report a $^{11}$B NMR line shape and spin-lattice relaxation rate ($1/(T_1T)$) study of pure and lightly carbon doped MgB$_{2-x}$C$_{x}$ for $x=0$, 0.02, and 0.04, in the vortex state and in magnetic field of 23.5 kOe. We show that while pure MgB$

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1eceb545c0c46c54ca8149a3e1d6e69c
https://doi.org/10.1007/s10948-005-0035-9

Zobrazit plný text záznamu

Spin-polarized oxygen hole states in cation-deficient La 1 − x Ca x MnO 3 + δ

Autor: G Papavassiliou, M Pissas, M Belesi, M Fardis, M Karayanni, J. P Ansermet, D Carlier, C Dimitropoulos, J Dolinsek

Publikováno v: Europhysics Letters (EPL). 68:453-459

When holes are doped into a Mott-Hubbard type insulator, like lightly doped manganites of the La(1-x)CaxMnO3 family, the cooperative Jahn-Teller distortions and the appearance of orbital ordering require an arrangement of Mn(3+)/Mn(4+) for the establ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8787bc6a393d6ccb4ef8b63538842ac6
https://doi.org/10.1209/epl/i2004-10233-3

Zobrazit plný text záznamu

Akademický článek

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

Protonic conductivity in KH2PO4 family studied by NMR

Autor: G Papavassiliou, J. Dolinšek, M Karayanni

Publikováno v: Solid State Ionics. 125:159-162

Protonic conductivity in the KH 2 PO 4 family of hydrogen-bonded insulators has been studied via the proton NMR lineshape and the decay of the NMR transverse nuclear spin magnetization of 87 Rb nuclei in a spatially inhomogeneous electric field gradi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::06b6b0f9526b11327288580b3ad75b8d
https://doi.org/10.1016/s0167-2738(99)00170-8

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání