Search results for "gène"
showing 10 items of 250 documents
Dissimilar joining of copper to stainless steel and TA6V to stainless steel by high power beams : understanding and modeling of physicochemical pheno…
2010
The present study is dedicated to the comprehension of the mechanism of materials mixing during dissimilar welding by high power beam sources. We have been interested in joining of two couples of metallic materials which present different metallurgical problems: •copper- stainless steel (miscibility gap, important difference in physical properties);•TA6V- stainless steel (oxidation on air, formation of intermetallic phases which made the joint brittle).For the first couple of materials, continuous laser Nd:YAG welding and electron beam welding have been applied. The experimental study of morphology evolution, composition, microstructure and mechanical properties has allowed establishing the…
Hypothalamic glucose sensing : mitochondrial dynamic involument in reactive oxygen species signaling
2011
Energetic homeostasis results in the balance between energy intake and expenditure. The hypothalamus plays an important role in the regulation of both energetic metabolism and food intake in sensing hormonal and metabolic signals. For instance, changes in hypothalamic glucose level modulate food intake and insulin secretion. We have previously found that 1) increased hypothalamic glucose level triggers production of mitochondrial reactive oxygen species (mROS) from the electron transport chain; 2) hypothalamic mROS production is involved in glucose homeostasis and food intake control. The molecular mechanisms involved in glucose-induced hypothalamic mROS production are still unknown. Mitoch…
Le comportement du soufre et les conditions d'oxydoréduction dans les basaltes hydratés de l'Etna inférés par des inclusions vitreuses et des verres …
2017
Sulfur is an important volatile component of magmas that presents different oxidation states, depending on the redox conditions and on the phase of occurrence: in silicate melts it is typically dissolved as S⁶⁺ and/or S²⁻ , in the gas phase it occurs principally as SO₂ (S⁴⁺ ) and H₂S (S²⁻). Mount Etna, in which magmatic redox conditions are poorly constrained, is used as a case study to investigate sulfur behavior in hydrous basaltic magmas during magma differentiation and degassing. This research integrates the study of natural olivine-hosted melt inclusions with an experimental study on S solubility in hydrous alkali basalts at magmatic conditions.Experimental results suggest the importan…
La sufixació apreciativa del català: creacions lèxiques i implicacions morfològiques
2015
Resum: La situació de la derivació apreciativa dins la morfologia és excepcional, perquè la informació limitada que contenen, en general, les gramàtiques i els diccionaris sobre els apreciatius així com l’ús habitual d’aquestes formes en contextos familiars i informals fan que la creativitat dels parlants no es vegi limitada per normatives i que, per tant, aflorin solucions imaginatives, que, tot i la variació existent, segueixen uns condicionaments gramaticals clars. L’objectiu d’aquest treball és aportar noves dades en aquest camp a partir de formes recollides en corpus tradicionals i per internet, amb una doble finalitat: d’una banda, aprofundir en les particularitats morfològiques de la…
The nuclear protein Sge1 of Fusarium oxysporum is required for parasitic growth
2009
Dimorphism or morphogenic conversion is exploited by several pathogenic fungi and is required for tissue invasion and/or survival in the host. We have identified a homolog of a master regulator of this morphological switch in the plant pathogenic fungus Fusarium oxysporum f. sp. lycopersici. This non-dimorphic fungus causes vascular wilt disease in tomato by penetrating the plant roots and colonizing the vascular tissue. Gene knock-out and complementation studies established that the gene for this putative regulator, SGE1 (SIX Gene Expression 1), is essential for pathogenicity. In addition, microscopic analysis using fluorescent proteins revealed that Sge1 is localized in the nucleus, is no…
Gènere i traducció en català. Bases arqueològiques per a un estat de la qüestió
2011
En els darrers vint-i-cinc anys l’interès pels estudis de traducció i la relació amb el gènere ha propiciat una recerca abundant i diversa. Aquest article mira d’oferir una visió panoràmica sobre la intersecció de la traducció i els estudis de gènere en el context de la llengua catalana, un punt de partida per a recerques futures. D’una banda, donem notícia dels principals treballs, panoràmics i específics, que se centren en la recuperació de traductores catalanes i els seus escrits. De l’altra, repassem les teories que han plantejat la intersecció gènere i traducció en català.
Gender and translation in Catalan: archaeological groundwork for assessing the state of affairs
2011
This article is the English version of “Gènere i traducció en català. Bases arqueològiques per a un estat de la qüestió” by Pilar Godayol. It was not published on the print version of MonTI for reasons of space. The online version of MonTI does not suffer from these limitations, and this is our way of promoting plurilingualism. In the last twenty-five years, interest in translation studies and its relation to gender has given rise to abundant and diverse research. This article seeks to offer a panoramic vision of the intersection between gender and translation in the Catalan language context, a point of departure for future research. On the one hand, we present the principal works, panorami…
Influència dels estereotips de gènere en les adolescents i els adolescents de La Safor, València: una aproximació a l'autopercepció i la construcció …
2018
A new actor involved in hypothalamic glucose detection : the Transient Receptor Potential Canonical (TRPC) channels
2015
Hyperglycemia is detected and integrated by the mediobasal hypothalamus (MBH) which, in turn, inhibits food intake and triggers insulin secretion. The MBH houses specialized glucose-sensitive (GS) neurons, which directly or indirectly modulate their electrical activity in response to changes in glucose level. In a first study, we hypothesized that indirect detection of glucose by MBH GS neurons involves the secretion of endozepine by astrocytes, a gliotransmitter known to inhibit food intake in response to hyperglycemia. The present work shows that endozepines selectively activate anorexigenic MBH pro-opiomelanotortine (POMC) neurons. In the second study, we show that the direct detection o…
Etude du rôle du monoxyde d’azote (NO) dans la réponse du transcriptome d’Arabidopsis thaliana aux oligogalacturonides, un éliciteur des réactions de…
2012
SPEIPM; International audience; Le monoxyde d’azote (NO) est capable de réguler chez les plantes de nombreux processus physiologiques dont les réponses des plantes aux pathogènes. Peu d’informations sont disponibles aujourd’hui sur les mécanismes expliquant le rôle du NO endogène dans ce contexte physiologique. Grâce à une étude transcriptomique, nous avons caractérisé chez Arabidopsis thaliana, des gènes cibles du NO produit en réponse à un éliciteur des réactions de défense, les oligogalacturonides (OG). L’analyse a permis d’identifier parmi ces gènes cibles, un nombre important de gènes impliqués dans les réponses aux stress biotiques tels que des facteurs de transcription ou des protéin…