Search results for "tiles"

THE NATURE AND SOURCE OF MAJOR MAGMATIC VOLATILES: OPEN-VENT DEGASSING VOLCANOES IN THE CENTRAL AMERICAN VOLCANIC ARC

Major volatiles play an important role in subduction zone magmatism, from magma generation in the mantle, to crustal ascent and evolution, until its dramatic expression during a volcanic eruption. In the attempt to add a piece of information on source and behavior of major volatiles in arc volcanism, I here report on the geochemistry of H2O, CO2, S and Cl in two volcanic systems in NW Nicaragua (Central America), San Cristóbal and Telica. The observational approach is based upon combination of some of the most recent techniques in volcanic gas monitoring and petrology. I here explore quiescent and eruptive degassing processes by combining both volcanic gas and melt inclusion approaches. Fie…

Two interconnected functional systems in the amygdala of amniote vertebrates.

2008

The amygdala shows ventropallial and lateropallial derivatives that can be compared among vertebrates according to their topological position, either superficial (cortical amygdala) or deep (basolateral amygdala and amygdalo-hippocampal area), connections and histochemical features. On the other hand, the subpallial amygdala, also called extended amygdala, is composed of medial and central divisions. In mammals, both divisions consist of an intra-amygdaloid portion and a part of the bed nucleus of the stria terminalis. In non-mammals, the intratelencephalic trajectory of the stria terminalis is short and both poles of the extended amygdala are close together. Like its mammalian counterpart,…

The pallial amygdala of amniote vertebrates: evolution of the concept, evolution of the structure

2002

Embryological studies indicate that the amygdala includes pallial structures, namely the cortical amygdala (olfactory and vomeronasal) and the basolateral complex deep to it. In squamate reptiles, the cortical amygdala includes secondary olfactory (the ventral anterior amygdala) and vomeronasal centres (the nucleus sphericus). In birds, the situation is far less clear, due to the relative underdevelopment of the chemosensory systems. The basolateral amygdala of squamate reptiles includes two ventropallial structures: the posterior dorsal ventricular ridge and the lateral amygdala. Like their mammalian counterparts, these centres give rise to glutamatergic projections to the striatal (centro…

Orígenes de las movilizaciones #primaveravalenciana : un análisis de los actores sociales más influyentes en Twitter

2018

Los públicos de Twitter se han convertido en un objeto de investigación social claramente consolidado. El objetivo del trabajo es contribuir a esta corriente de investigación con el análisis de las condiciones sociales que favorecieron la expansión de la etiqueta #primaveravalenciana. Para ello, nos centraremos en la etapa inicial de la etiqueta, estableciendo una tipología de participantes, identificando a los actores más influyentes y realizando un análisis de contenido de los micro-mensajes que fomentaron la expansión viral de la etiqueta en los días posteriores. Frente a las teorías que tienden a minimizar las distinciones sociales en las interacciones de las redes sociales, el análisis…

Contribution à l'estimation non paramétrique des quantiles géométriques et à l'analyse des données fonctionnelles

2008

In this dissertation we study the nonparametric geometric quantile estimation, conditional geometric quantiles estimation and functional data analysis. First, we are interested to the definition of geometric quantiles. Different simulations show that Transformation-Retransformation technique should be used to estimate geometric quantiles when the distribution is not spheric. A real study shows that, data are better modelized by geometric quantiles than by marginal one's, especially when variables that make up the random vector are correlated. Then we estimate geometric quantiles when data are obtained by survey sampling techniques. First, we propose an unbaised estimator, then using lineari…

First archaeobotanical mentions of hemp leaved nettle ( Urtica cannabina ), in association with hemp ( Cannabis sativa ), on two sites in Champagne

2021

La culture du chanvre (Cannabis sativa) semble maintenant bien renseignée à partir du Xe siècle de notre ère en France septentrionale (Boulen et Zech-Matterne 2012), et l’utilisation des orties pour leurs fibres, généralement l’ortie dioïque (Urtica dioica), est également avérée. Toutefois, l’ortie à feuille de chanvre (Urtica cannabina) n’avait encore jamais été mentionnée parmi les études bioarchéologiques (pollen et macrorestes). Cette espèce a cependant été découverte pour la première fois à l’occasion d’une étude palynologique dans un contexte daté du XIVe siècle du site de Bezannes « le Village » (51), fouillé en 2013 (Gucker et al., en cours). Une fouille très récente à Troyes « Plan…

Relationship between the non-volatile composition and the in-mouth quality in red wines

2014

Póster presentado en la Third Edition of International Conference Series on Wine Active Compounds (WAC2014), celebrada en Borgoña (Francia) del 26 al 28 de marzo de 2014.

Appearance and use of Roman roofing materials in the region of the Aedui and Lingones

2014

Römische Konstruktionstechniken und Baustoffe können als Anzeichen für Romanisierung gewertet werden. Sie legenZeugnis von den veränderten Verhaltensweisen ab, wie die Haeduer und die Lingonen mit den natürlichen Ressourcenumgingen, um diese Materialien zu produzieren. Es können deutliche Unterschiede zwischen diesen beiden gallischenStämmen hinsichtlich des Einsatzes von Ziegel- und Steindächern beobachtet werden. Die Haeduer verwenden meistensZiegel für ihre Dächer, selbst wenn die lokal verfügbaren natürlichen Ressourcen eine Produktion dieses Baustoffesnicht erlauben. Im Gegensatz dazu kommen bei den Lingonen Ziegel nur dann zum Einsatz, wenn die entsprechendenRessourcen vorhanden …

Die Textil- und Pflanzenreste aus zwei keltischen Hügelgräbern von Heinzerath und Horath (Kr. Bernkastel-Wittlich) im Hunsrück

2017

International audience; This paper presents results of detailed observation on two early Celtic swords obtained by microscopical analysis of textiles and fossilized plant remains consevered by metal oxides.

Note preliminari sul rinvenimento di un'area artigianale da Contrada Amone e sulla produzione ceramica nel bacino idrografico del fiume Nocella

2019

Questo articolo esamina le evidenza archeologiche di età romana nella Piana di Partinico, un'area ad Est del Golfo di Castellammare ricca di insediamenti rurali e ville tra cui quella famosa di Sirignano. L'area di contrada Amone, già nota per la presenza di un impianto termale e la scoperta di lacerti di mosaici policromi, si arricchisce adesso di una nuova area artigianale. La scoperta di alcuni scarti di tegole ha fornito l'opportunità per riflettere sulla possibile origine delle tegole bollate ONASOY, di cui si accetta tradizionalmente la provenienza dalla baia di San Cataldo. Viene dunque presentato un esame preliminare degli impasti ceramici provenienti da contrada Amone e baia San Ca…