Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Mohamed-Ramzi Ammar"'
Autor:
O. A. Maslova, Cristiano Fantini, Mohamed-Ramzi Ammar, Svetlana A. Barannikova, Marcos A. Pimenta
Publikováno v:
Journal of Raman spectroscopy. 2021. Vol. 52, № 3. P. 670-677
The Raman spectra of graphene-based matter exhibit a set of defect/disorder-induced bands. The D band, which exhibits a strong dispersion up to similar to 50 cm(-1)/eV, comes from transverse optical phonons around K or K ' in the first Brillouin zone
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f37af5381dda01dcfe4750ee9c7af07b
https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000897141
https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000897141
Autor:
Uroš Cvelbar, Johannes Berndt, Janez Zavašnik, Thomas Strunskus, Mohamed-Ramzi Ammar, Thierry Sauvage, Neelakandan M. Santhosh, Wolfgang E. S. Unger, Eva Kovacevic
Publikováno v:
Carbon
Thermally stable carbon nitride nanostructures have potential applications in surface coatings and automotive fields. In this work, hydrogenated nitrogen-rich carbon nitride nanoparticles have been synthesised via low-pressure low-power plasma vapour
Publikováno v:
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON PHYSICAL MESOMECHANICS. MATERIALS WITH MULTILEVEL HIERARCHICAL STRUCTURE AND INTELLIGENT MANUFACTURING TECHNOLOGY.
Mechanical polishing of graphite-like sp2 carbon structures is known to lead to the unpredictable increase in the defect-conducted (D) band (∼1350 cm−1) in their Raman spectra, whereas the G band (∼1580 cm−1) interpreted as an intrinsic chara
Autor:
Eva Kovacevic, Johannes Berndt, Enric Bertran-Serra, Roger Amade, Shahzad Hussain, Cedric Pattyn, A. Dias, Mohamed-Ramzi Ammar, Chantal Boulmer-Leborgne
Publikováno v:
Electrochimica Acta
Electrochimica Acta, Elsevier, 2018, 268, pp.218-225. ⟨10.1016/j.electacta.2018.02.112⟩
Electrochimica Acta, Elsevier, 2018, 268, pp.218-225. ⟨10.1016/j.electacta.2018.02.112⟩
Radio frequency plasma-enhanced chemical vapor deposition (RF-PECVD) was employed to synthesize vertically aligned carbon nanotubes (VACNTs) using Ni catalyst on TiN/SiO2/Si substrate. Subsequently, CNTs were covered by a thin film of polyaniline (PA
Autor:
Mohamed-Ramzi Ammar, N. Bérerd, N. Toulhoat, Philippe Sainsot, Nathalie Moncoffre, Damien Deldicque, Y. Pipon, N. Galy, Patrick Simon
Publikováno v:
J.Nucl.Mater.
J.Nucl.Mater., 2018, 502, pp.20-29. ⟨10.1016/j.jnucmat.2018.01.058⟩
Journal of Nuclear Materials
Journal of Nuclear Materials, 2018, 502, pp.20-29. ⟨10.1016/j.jnucmat.2018.01.058⟩
J.Nucl.Mater., 2018, 502, pp.20-29. ⟨10.1016/j.jnucmat.2018.01.058⟩
Journal of Nuclear Materials
Journal of Nuclear Materials, 2018, 502, pp.20-29. ⟨10.1016/j.jnucmat.2018.01.058⟩
International audience; Graphite has been widely used as neutron moderator, reflector or fuel matrix in different types of reactors such as gas cooled nuclear reactors (UNGG, Magnox, AGR), RBMK reactors or high temperature gas cooled reactors. Their
Autor:
N. Toulhoat, N. Bérerd, Nathalie Moncoffre, N. Galy, Patrick Simon, Damien Deldicque, Mohamed-Ramzi Ammar, Philippe Sainsot, Y. Pipon
Publikováno v:
CAST General Assembly Meeting
CAST General Assembly Meeting, Oct 2016, Bucarest, Romania
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2017, 409, pp.235-240. ⟨10.1016/j.nimb.2017.05.056⟩
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2017, 409, pp.235-240. ⟨10.1016/j.nimb.2017.05.056⟩
CAST General Assembly Meeting, Oct 2016, Bucarest, Romania
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2017, 409, pp.235-240. ⟨10.1016/j.nimb.2017.05.056⟩
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2017, 409, pp.235-240. ⟨10.1016/j.nimb.2017.05.056⟩
International audience; Due to its excellent moderator and reflector qualities, graphite was used in CO2-cooled nuclear reactors such as UNGG (Uranium Naturel-Graphite-Gaz). Neutron irradiation of graphite resulted in the production of 14C which is a
Autor:
Guillaume Guimbretière, Lionel Desgranges, Mohamed-Ramzi Ammar, O. A. Maslova, Patrick Simon, Aurélien Canizares, C. Jégou
Publikováno v:
Materials Characterization
Materials Characterization, Elsevier, 2017, 129, pp.260-269. ⟨10.1016/j.matchar.2017.05.015⟩
Materials characterization. 2017. Vol. 129. P. 260-269
Materials Characterization, 2017, 129, pp.260-269. ⟨10.1016/j.matchar.2017.05.015⟩
Materials Characterization, Elsevier, 2017, 129, pp.260-269. ⟨10.1016/j.matchar.2017.05.015⟩
Materials characterization. 2017. Vol. 129. P. 260-269
Materials Characterization, 2017, 129, pp.260-269. ⟨10.1016/j.matchar.2017.05.015⟩
A ceramic sample of uranium dioxide is probed by Raman imaging followed by a combined Lorentzian fitting – Principal Component Analysis process. This allows to evidence structural or chemical inhomogeneities of the material, which affect Raman line
Autor:
N. Raimboux, Mohamed-Ramzi Ammar, Patrick Simon, Jacques Poirier, Nicolas Bost, Aurélien Canizares, P. Melin
Publikováno v:
Vibrational Spectroscopy
Vibrational Spectroscopy, Elsevier, 2016, 87, pp.157-163. ⟨10.1016/j.vibspec.2016.10.003⟩
Vibrational Spectroscopy, Elsevier, 2016, 87, pp.157-163. ⟨10.1016/j.vibspec.2016.10.003⟩
The catalytic decomposition of carbon monoxide from a mixture of CO and H 2 in the presence of iron or iron oxides has been the subject of many studies since the end of 1950s. The Boudouard reaction (2CO → CO 2 + C) produces solid carbon deposition
Autor:
Cécile Genevois, Jacques Poirier, S. Brassamin, Aurélien Canizares, Joris Kadok, Auriane Etienne, Nicolas Bost, Mohamed-Ramzi Ammar, Antoine Coulon
Publikováno v:
Journal of the European Ceramic Society
Journal of the European Ceramic Society, Elsevier, 2019, ⟨10.1016/j.jeurceramsoc.2019.03.008⟩
Journal of the European Ceramic Society, 2019, ⟨10.1016/j.jeurceramsoc.2019.03.008⟩
Journal of the European Ceramic Society, Elsevier, 2019, ⟨10.1016/j.jeurceramsoc.2019.03.008⟩
Journal of the European Ceramic Society, 2019, ⟨10.1016/j.jeurceramsoc.2019.03.008⟩
The formation of sp2 carbon by the Boudouard reaction significantly damages the refractory ceramics. Sulphur is an efficient way to prevent the carbon deposition catalysed by Fe3C, in the presence of H2. Thermogravimetric analysis was carried out on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77b6e8f223459e0e1746b12dbc2e85c4
https://hal.archives-ouvertes.fr/hal-02106692/document
https://hal.archives-ouvertes.fr/hal-02106692/document
Autor:
I. N. Leontyev, Cécile Genevois, Svetlana A. Barannikova, Lionel Desgranges, O. A. Maslova, Aurélien Canizares, Mohamed-Ramzi Ammar, E. de Bilbao, Patrick Simon, X. Iltis
Publikováno v:
Materials Characterization
Materials Characterization, Elsevier, 2019, 147, pp.280-285
Materials Characterization, Elsevier, 2019, 147, pp.280-285. ⟨10.1016/j.matchar.2018.11.006⟩
Materials Characterization, 2019, 147, pp.280-285. ⟨10.1016/j.matchar.2018.11.006⟩
Materials characterization. 2019. Vol. 147. P. 280-285
Materials Characterization, Elsevier, 2019, 147, pp.280-285
Materials Characterization, Elsevier, 2019, 147, pp.280-285. ⟨10.1016/j.matchar.2018.11.006⟩
Materials Characterization, 2019, 147, pp.280-285. ⟨10.1016/j.matchar.2018.11.006⟩
Materials characterization. 2019. Vol. 147. P. 280-285
A surface state analysis of an UO2 ceramic is performed by combining Raman imaging and electron back-scattering diffraction. Special attention is paid to the behavior of the T2g band intensity versus the crystalline orientation. In order to clarify t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64694e5c758fce27f92a50370f1f4ef6
https://hal.archives-ouvertes.fr/hal-01945928
https://hal.archives-ouvertes.fr/hal-01945928