Search results for "génie"
showing 10 items of 131 documents
Generation and characterization of T40/A5754 interfaces with lasers
2014
Laser-induced reactive wetting and brazing of T40 titanium with A5754 aluminum alloy with 1.5 mm thickness was carried out in lap-joint configuration, with or without the use of Al5Si filler wire. A 2.4 mm diameter laser spot was positioned on the aluminum side to provoke spreading and wetting of the lower titanium sheet, with relatively low scanning speeds (0.1 to 0.6 m/min). Process conditions did not play a very significant role on mechanical strengths, which were shown to reach 250-300 N/mm on a large range of laser power and scanning speeds. In all cases considered, the fracture during tensile testing occurred next to the TiAl3 interface, but in the aluminum fusion zone. In a second st…
Real time polarization imaging of weld pool surface
2015
The search for an efficient on-line monitoring system focused on the real-time analysis of arc welding quality is an active area of research. The topography and the superficial temperature field of the weld pool can provide important information which can be used to regulate the welding parameters for depositing consistent welds. One difficulty relies on accessing this information despite the bright dazzling welding arc. In the present work, Stokes polarimetry and associated shape-from-polarization methods are applied for the analysis of the weld pool through its 810 nm-wavelength infrared emissions. The obtained information can provide a better understanding of the process, such as the usa…
Effect of relative humidity on carvacrol release and permeation properties of chitosan based films and coating
2014
International audience; The influence of water vapour conditions on mass transport and barrier properties of chitosan based films and coatings were studied in relation to surface and structural properties. Water contact angles, material swelling, polymer degradation temperature, barrier properties (PO2, PCO2, WVP) and aroma diffusion coefficients were determined. The solvent nature and the presence of carvacrol influenced the surface and structural properties and then the barrier performance of activated chitosan films. Increasing RH from 0% to 100% led to a significant increase in material swelling. The plasticization effect of water was more pronounced at high humid environment, while at …
La mobilité géographique des ingénieurs dans les premières années de vie professionnelle
2012
En ligne sur : http://www.cereq.fr/index.php/content/download/4871/44628/file/Relief37.pdf; National audience; Cette communication s'interroge sur les conséquences de la création des pôles de compétitivité sur la mobilité et l'insertion des diplômés des écoles d'ingénieurs. Elle utilise les données de l'enquête Génération 2004 du Céreq pour montrer que la création des pôles de compétitivité a sensiblement réduit la mobilité des jeunes ingénieurs issus des territoires correspondant à ces pôles en début de vie active. Cela s'explique en partie par une augmentation de la rémunération des jeunes ingénieurs au sein des pôles.
L'emploi des ingénieurs agronomes et des travaux agricoles
1986
L'auteur présente tout d'abord de façon détaillée l'enseignement supérieur des Sciences de l'Agronomie. Après un bref historique, il rappelle les projets de réforme concernant les ENSA et les ENITA (rapports J. Mothes), puis examine les filières et les conditions d'accès aux Écoles d'Ingénieurs, ainsi que leurs effectifs, en situant ce type de formation dans le système des Grandes Écoles. L'auteur opère ensuite une synthèse des résultats obtenus à partir d'une enquête élaborée à l'initiative de la Direction Générale de l'Enseignement et de la Recherche (DGER) du Ministère de l'Agriculture et qui tente d'appréhender le devenir professionnel des ingénieurs qui sont issus des ENSA et des ENITA…
L'emploi des ingénieurs agronomes et des travaux agricoles : formation, insertion et mobilité professionnelle
1986
référence interne : 86005
La migration comme renversement des rapports de pouvoir linguistiques. Pertes et profits d'ingénieurs aéronautiques en mobilité internationale
2023
Context-aware intelligent video analysis for the management of smart buildings
2019
To date, computer vision systems are limited to extract digital data of what the cameras "see". However, the meaning of what they observe could be greatly enhanced by environment and human-skills knowledge.In this work, we propose a new approach to cross-fertilize computer vision with contextual information, based on semantic modelization defined by an expert.This approach extracts the knowledge from images and uses it to perform real-time reasoning according to the contextual information, events of interest and logic rules. The reasoning with image knowledge allows to overcome some problems of computer vision such as occlusion and missed detections and to offer services such as people guid…
Molecular cloning, gene structure and expression profile of two mouse peroxisomal 3-ketoacyl-CoA thiolase genes
2004
Abstract Background In rats, two peroxisomal 3-ketoacyl-CoA thiolase genes (A and B) have been cloned, whereas only one thiolase gene is found in humans. The aim of this study was thus to clone the different mouse thiolase genes in order to study both their tissue expression and their associated enzymatic activity. Results In this study, we cloned and characterized two mouse peroxisomal 3-ketoacyl-CoA thiolase genes (termed thiolase A and B). Both thiolase A and B genes contain 12 exons and 11 introns. Using RNA extracted from mouse liver, we cloned the two corresponding cDNAs. Thiolase A and B cDNAs possess an open reading frame of 1272 nucleotides encoding a protein of 424 amino acids. In…
Retro-nasal aroma release is correlated with variations in the in-mouth air cavity volume after empty deglutition.
2012
International audience; We hypothesized that interindividual differences in motor activities during chewing and/or swallowing were determining factors for the transfer of volatile aroma from the in-mouth air cavity (IMAC) toward the olfactory mucosa. In our first experiment, we looked for changes in IMAC volume after saliva deglutition in 12 healthy subjects. The mean IMAC volume was measured after empty deglutition using an acoustic pharyngometer device. Based on the time course of the IMAC volume after swallowing, we discerned two groups of subjects. The first group displayed a small, constant IMAC volume (2.26 mL ±0.62) that corresponded to a high tongue position. The second group displa…