1,724,820 research outputs found
Synthesis and characterization of advanced materials for Li-ion batteries :\ud 1. Si/RGO nanocomposite anodes.\ud 2. V2O5 gel cathodes.
No full textLithium-ion batteries represent the state-of-the-art of electrochemical energy storage. However, with the advance of microelectronic technology for portable devices and the progressive introduction into the automotive market of Electrical Vehicles (EVs.), a breakthrough in Li-ion materials is needed to overcome known issues related to cost, higher energy densities, safety and cycle life. Moreover, steps forward are also needed from a sustainability point of view, in order to reduce both costs and environmental impact during battery manufacturing.\ud
On the anode side, research in next-generation materials, capable of replacing the industry-standard graphite, are now underway. In this PhD thesis, a novel high capacity Silicon/Reduced Graphene Oxide (Si/RGO) nanocomposite has been synthesized, thoroughly characterized and evaluated under an electrochemical point of view. The electrode preparation has been optimized using an alternative binder and eco-friendly solvent like ethanol. The composite shows a good stability and capacity retention over prolonged cycling.\ud
On the cathode side, next-generation materials should have higher capacities in order to increase the energy density of the future batteries. In this PhD thesis, Vanadium Pentoxide (V2O5) - has been studied both in its amorphous (aerogel) and crystalline form as next generation Li-ion cathode materials. Also in this case materials were prepared, characterized and electrochemically tested. A green and eco-friendly approach during electrode processing was used also in this case.\ud
The data resulting from this PhD thesis were subject of the following publications and proceedings of congresses:\ud
- F. Maroni, R. Raccichini, A. Birrozzi, G. Carbonari, R. Tossici, F. Croce, R. Marassi, F. Nobili Graphene/silicon nanocomposite anode with enhanced electrochemical stability for lithium-ion battery applications, J. Power Sources, 2014; Vol. 269; 873 – 882. doi:10.1016/j.jpowsour.2014.07.064\ud
- A. Moretti, F. Maroni, F. Nobili, S. Passerini, V2O5 electrodes with extended cycling ability and improved rate performance using polyacrylic acid as binder, J. Power Sources, 2014, In Press. doi : 10.1016/j.jpowsour.2014.09.150\ud
- A. Moretti, F. Maroni, I. Osada, F. Nobili, S. Passerini, V2O5 aerogel as a versatile cathode material for lithium and sodium batteries, ChemElectroChem, 2014, In Press.\ud
- F. Nobili, F. Maroni, R. Raccichini, R. Tossici, R. Marassi, A Silicon/Graphene Composite Anode for High-Efficiency Lithium Batteries, 17th International Meeting on Lithium Batteries, June 10/14 2014, Cernobbio (CO) Italy, Abstract #361.\ud
- F. Nobili, F. Maroni, R. Raccichini, R. Tossici, R. Marassi, Graphene/Silicon nanocomposite anode with enhanced electrochemical stability for Li-ion battery applications, Green Lion European Project Workshop, October 28-29 2014, Ulm, Germany Abstract #20.\ud
- Si/RGO nanocomposite development was carried out within the ENEA project “Ricerca di materiali anodici per batterie litio ione operanti in elettroliti organici convenzionali di più elevata energia rispetto a quelle sul mercato” and reported in the following documents:\ud
- R. Marassi, F. Nobili, R. Tossici, M. Marinaro, A. Birrozzi, R. Raccichini, RdS 2012\ud
- A. Birrozzi, F. Maroni, G. Carbonari, R. Tossici, F. Nobili, R. Marassi, RdS 201
Archaeological Investigations between Cayenne Island and the Maroni River
No full textArchaeological Investigations between Cayenne Island and the Maroni River (PhD Dissertation Leiden University)
Abstract:
Stratigraphic archaeological research in French Guiana is barely 50 years old and has been conducted primarily in the coastal zone, stretching approximately between 5 and 50 kilometres from the Atlantic coast to the Precambrian Shield. This bias, mainly caused by means of modern infrastructure, has sketched an archaeological record concerning pre-Columbian French Guiana focussing on the Late Ceramic Age (AD 900-1500) of Cayenne Island as well as the western Holocene coastal plains. The present study contains the results of six archaeological investigations, conducted from a compliance archaeological perspective, in order to enhance our knowledge of the afore-mentioned coastal area. It not only presents us with fresh archaeological data on the (Late) Archaic and Early Ceramic Age, a hiatus that is now partially fill up, but also sheds new light on the Late Ceramic Age of this specific region concerning funerary rites, ceramic series and subsistence
Giancarlo maroni, Gabriele d'Annunzio e gli artisti per il Vittoriale: un breve itinerario all'interno della "Santa Fabbrica"
No full textContributo nel catalogo della mostra "L’architetto del lago. Giancarlo Maroni e il Garda" presso il Museo Civico di Riva del Garda (TN
Liturgusa maroni Svenson 2014
No full textLiturgusa maroni Svenson, 2014 Liturgusa maroni Svenson, 2014: 137. MATÉRIEL EXAMINÉ. — Mitaraka, 1 ♀, II-III.2015, récoltée de nuit sur un tronc. DISTRIBUTION. — Espèce connue seulement de Guyane.Published as part of Roy R., 2019, Les mantes (Dictyoptera, Mantodea) du massif du Mitaraka (Guyane), in Touroult J. (ed.), " Our Planet Reviewed " 2015 large-scale biotic survey in Mitaraka, French Guiana., pp. 59-70 in Zoosystema 41 (5) on page 61, DOI: 10.5252/zoosystema2019v41a5, http://zenodo.org/record/258049
L’école sur le Maroni
No full textLes Premiers Temps peuvent tuer les gens.C’est pourquoi on ne devrait jamais en parler aux jeunes. (Price, 1994) Introduction Le long du Maroni, les enfants vont à l’école. Pas tous, certes, mais beaucoup : pour l’année scolaire 2004-2005, de Maïman – la première commune dotée d’une école après Saint-Laurent-du-Maroni – à Pilima, 260 kilomètres d’eau et de rapides plus loin, 3 386 élèves sont accueillis par 193 enseignants dans 19 écoles primaires, soit 160 classes maternelles et élémentaires..
Les pirogues du Maroni
Full text linkSur le Maroni, fleuve frontière entre la Guyane française et le Surinam, les pirogues amarrées le long des berges se comptent par centaines. Elles représentent le seul moyen de transport pour les milliers de personnes vivant sur les rives du Maroni. Les différentes formes de pirogues sont révélatrices de la diversité géographique du Maroni et de la diversité culturelle des populations. Les Amérindiens du littoral naviguent uniquement dans l’estuaire du fleuve. Ils construisent des pirogues larges, hautes et terminées à la poupe par une haute étrave qui fend les vagues. Ces pirogues sont construites à partir d’une coque monoxyle expansée et rehaussée d’un ou de deux bordages. En chauffant la grume évidée, le bois acquiert une certaine plasticité qui permet d’écarter les flancs et d’obtenir une coque très large à partir d’un arbre de faible diamètre. Les Bushinenge, populations d’origine africaine qui ont déserté les grandes plantations de la Guyane hollandaise dès le début du XVIIe siècle et se sont installées sur les deux rives du Maroni, ont développé des formes de pirogues adaptées au passage des sauts. Leurs pirogues, construites également en expansant la coque au feu, sont étroites et longues et possèdent des extrémités curvilignes qui dépassent largement au–dessus du bordage. Les longues pirogues à moteur comme les canots–pagaies sont ornés de motifs d’entrelacs appelés tembé ; et de décors d’inspiration contemporaine. L’inventaire des pirogues du Maroni a mis en évidence la richesse et la vitalité du patrimoine nautique de cette région au début du XXIe siècle, tant au niveau des formes des embarcations que des décors et des pratiques de navigation.On the Maroni river, natural border between French Guyana and the Surinam, canoes tied to the river banks can be counted by the hundreds. They are the only mean of transportation for thousands of people living along the Maroni river. The various shapes of the canoes caracterize the geographical and the cultural diversity of the populations of the Maroni. Costal Amerindians sail only on rivers estuaries. They build wide and high canoes ending on the stern with a high prow that penetrates the waves. Those canoes are constructed with a single hull and raised with one or two side boards. When heated, emptied wooden trunk, acquired a certain amount of elasticity, this enables the trunk to have its sides spread, in order to end up with a wide hull from a small diameter tree. The Maroons, originated in Africa and run away from the colonial plantations of Dutch Guyana as early as the XVII century, settled on both bank of the Maroni and developed the canoe’s shape that allows them to pass the rapids. There canoes are built using the widening technique of the hull with fire, they are narrow and long and equipped with curved ending that raise high above the side. The long motor canoes such as the “paddle canoes”, are decorated with interwoven design called “tembé” as well as decoration from contemporary inspiration. The inventory of the Maroni river canoes showed a rich and vibrant nautical patrimony at the beginning of the XXI century, in terms of shapes decorations and usages
Crique Cœur Maroni (Guyane française)
No full textNowacki Philippe, Puaux Olivier. Crique Cœur Maroni (Guyane française) . In: Journal de la Société des Américanistes. Tome 77, 1991. pp. 173-176
Las modalidades de la adopción: el Ordenamiento Jurídico Español y el Derecho Comparado
No full textMaroni, Audrey; director de proyecto: Jarillo Gómez, Juan Luis2020-2021Grado en DerechoFacultad de Estudios Sociales y Lenguas Aplicada
Version d'auteur : "Le Camp de la Transportation de Saint-Laurent-du-Maroni : Cases de transportés, hamacs et bats-flancs"
No full textVersion d’auteur, document de travail. Il s’agit d’un rapport rédigé pour le SIAP de Saint-Laurent du Maroni en 2014. Les photographies ont été faites par les soins de l’auteur aux ANOM
The Great Goddess at Maroni-Vournes
No full textLe culte de la Grande Déesse ou Aphrodite de Chypre est présent partout dans l’île comme le prouvent plus de 200 sites de sanctuaires. Ils étaient consacrés à Kypris et/ ou sa contrepartie masculine, dit Apollon chypriote, et se trouvaient aussi bien dans les zones urbaines des royaumes et leur environnement immédiat, que dans les régions rurales des territoires frontaliers. L’un de ces sites est Maroni-Vournes (fouilles G. Cadogan dans les années 1980), dans une zone rurale côtière à la limite orientale du territoire d’Amathonte (ca 25 km à l’ouest de Maroni). Cet article s’efforce de montrer les aspects variés du culte de la Grande Déesse dans ce sanctuaire rural, où elle partageait avec un parèdre divin masculin le culte rendu par la population locale.Ulbrich Anja. The Great Goddess at Maroni-Vournes. In: Cahiers du Centre d'Etudes Chypriotes. Volume 45, 2015. Hommage à Jacqueline Karageorghis. pp. 201-209
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