Výsledky vyhledávání - "Zappelli, Alexandre"

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Size dependent phase diagrams of Nickel-Carbon nanoparticles

Autor: Magnin, Yann, Zappelli, Alexandre, Amara, Hakim, Ducastelle, François, Bichara, Christophe

The carbon rich phase diagrams of nickel-carbon nanoparticles, relevant to catalysis and catalytic chemical vapor deposition synthesis of carbon nanotubes, are calculated for system sizes up to about 3 nanometers (807 Ni atoms). A tight binding model

Externí odkaz: http://arxiv.org/abs/1504.06193

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Importance of carbon solubility and wetting properties of nickel nanoparticles for single wall nanotube growth

Autor: Diarra, Mamadou, Zappelli, Alexandre, Amara, Hakim, Ducastelle, François, Bichara, Christophe

Optimized growth of Single Wall Carbon Nanotubes requires a full knowledge of the actual state of the catalyst nanoparticle and its interface with the tube. Using Tight Binding based atomistic computer simulations, we calculate carbon adsorption isot

Externí odkaz: http://arxiv.org/abs/1206.5431

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Techniques de carottages sur calcite souterraine. Enjeux et méthodes

Autor: Monvoisin, Gael, Dapoigny, Arnaud, Husson, Eglantine, Jaillet, Stéphane, Malet, Emmanuel, Zappelli, Alexandre, Régnier, Édouard, Garagnon, Julia

Publikováno v: Karstologia, Proceedings of the 18th UIS Congress, Mémoires
18th International Congress of Speleology
18th International Congress of Speleology, Jul 2022, Le Bourget du Lac, France

Several analytical techniques are available to study underground calcite samples (U/Th, U/Pb dating, chemical and isotopic analyses, morphoscopy...). This leads to an increase of the number of samples taken from the caves. However, the conservation o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::bb84fa1c30e68687b2ccd54f81e57f73
https://hal.science/hal-03932691

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Découverte et étude de remplissages karstiques allochtones d’âge miocène dans l’Obiou (Dévoluy, Alpes françaises) Implications géomorphologiques et paléogéographiques

Autor: Jagercikova, Marianna, Mocochain, Ludovic, Lebatard, A.-E., Bourles, D.L., Leanni, L., Sartégou, Amandine, Zappelli, Alexandre

Publikováno v: KARSTOLOGIA
KARSTOLOGIA, Fédération Française de Spéléologie et Association Française de Karstologie, 2021
Karstologia
Karstologia, 2021

International audience; At the mountainside of Obiou (2 789 m) located in the Dévoluy massif (Southwestern Alps) a fortunate discovery has revealed the presence of allochthonous crystalline pebbles excavated from marmot holes. Successive prospecting

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::9d03c080d08191f12b9da3037e79b427
https://hal.archives-ouvertes.fr/hal-03328463

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