Search results for "Plage"
showing 10 items of 30 documents
Ligands hybrides : synthèse et chimie de coordination
2011
This manuscript deals with the synthesis of hybrids ligands and their coordination ability. The first part is dedicated to Cp-imidazole, Cp-imidazolium and Cp-phosphine ligands. Several synthetic routes have been developed to reach these mixed ligands and their coordination chemistry has been studied with titanium. In a second part, a method developed in our laboratory to synthesize phosphine-olefines was applied to obtain a phosphino-diene bearing three potential coordination sites. We have studied the coordination modes of this hybrid ligand using various transition metals and some of the formed complexes were tested in catalysis. In the third part is described the coordination chemistry …
Réseaux métalliques pour le couplage dans des guides en dioxyde de titane
2016
National audience; Nous montrons la fabrication de réseaux métalliques enterrés entre deux couches de dioxyde de titane. En utilisant un supercontinuum, nous démontrons expérimentalement une efficacité de couplage supérieure à -8 dB pour une bande passante à 3 dB supérieure à 80 nm.
Potientalities of a hydroclimatic modelling chain at the basin scale of Burgundy.
2014
Qualité aromatique de la framboise (Rubus idaeus L.) II. Interprétation de l'indice d'arôme
1982
International audience; La mesure de l'indice d'Arôme, basée sur l'intensité de la coloration bleue qui se développe dans les distillats de framboises aromatiques traités par la vanilline en solution sulfurique concentrée, est interprétée en identifiant les principaux composés participant à cette réaction colorée. Six composés : géraniol, linalol, nérol, α-terpinéol, α- et β-ionones, ont été séparés, révélés et inolés par chromatographie sur couche mince de gel de silice (CCM) et identifiés par couplage chromatographie en phase gazeuse (CPG) et spectrométrie de masse (SM). Ces composés représentent près de 80% de la valeur de l'Indice d'Arôme d'un distillat d'une variété aromatique : Mallin…
Contribution to the study of interaction between residual stress and oxygen diffusion in a deformable and reactive solid
2011
The aim of this PhD work is to highlight the interactions between the mechanical stress and the chemical composition within diffusion of matter process for a reactive solid. The chronological evolution of our work goes from a parametric numerical study to an experimental study and reveals the role of mechanical stresses on the oxygen diffusion process.Different origins of mechanical stress were first numerically analysed from the point of view of their impacts on the process of oxygen diffusion into a metal (Zr) or a ceramic (UO2) subjected to an oxidizing environment. This approach allowed us: to identify a surface treatment (shot-peening) able to generate a residual specific stress field,…
When professionals force managers to adopt a decoupling strategy
2015
Top managers in organizations usually adopt a “decoupling” strategy to regulate relations with the professionals whom they employ. The concept of decoupling worked out by Meyer and Rowan (1977) can be used to analyze senior management’s decision to avoid confrontations with professionals by accepting, more or less outright, differences between the institution’s norms and the practices of professionals. Operating in this way is no longer obvious, since managers increasingly interfere in the “business” of professionals. The latter still have resources for countering top management’s strategy of “conformity” with the requirements of institutional representatives ; but they have to put up a fig…
Rachats d’actions annoncés versus rachats réalisés:une analyse du découplage sur le marché français - Announced share repurchase versus repurchase sh…
2011
(VF)Notre analyse originale porte sur la pertinence des explications des rachats d’actions en confrontant les motivations des rachats annoncés au faible taux de rachats effectifs mesuré sur le marché français. Nous mobilisons les principales explications théoriques des rachats d’actions et nous proposons une étude empirique de plusieurs centaines de programmes de rachats afin de justifier l’intention volontaire des dirigeants de ne pas engager des rachats importants en dépit de ceux annoncés provoquant ainsi un découplage. Nous montrons que certaines entreprises ont une probabilité plus élevée de provoquer ce découplage en rachetant plus faiblement leurs propres actions. Ce sont les entrepr…
“Things that matter most must never be at the mercy of things that matter least” : En kvantitativ studie av psykiske helseplager blant ungdom i Norge…
2018
Masteroppgave psykisk helsearbeid ME504 - Universitetet i Agder 2018 This master thesis has been developed in collaboration between Bente Melbøe Hokland and Majbritt Legind Hersel. Throughout our education we have often discussed a common wonder about youths; why someone is doing well in life while others do not. The master thesis gave us the opportunity to conduct a quantitative survey where we through Ungdata have investigated how many young people who indicate to struggle with depressive ailments and how this is distributed among the sexes. The figures are from 2015. After mapping the scope, the purpose is to investigate which factors may be associated with the experience of depression a…
Spectroscopie des hexafluorures à nombre impair d'électrons
1995
From a theoretical point of view, a tensorial formalism adapted to the study of molecules or octahedral ions with a half-integer angular momentum has been developed for the first time. We have used here the method of projective representations, more consistent than that of double groups. A complete set of coupling coefficients and formulas, as well as the corresponding computing programs have been elaborated. This has firstly allowed to write a simple model describing the vibronic structure of colored hexafluorides. Then, somme applications of this formalism to the study of rovibronic couplings of XY6 molecules in a fourfold degenerate electronic state have been considered, especially conce…
Samhandling om tjenester til personer med utviklingshemming og samtidig psykiske lidelser/ plager: Hvilke erfaringer har deres foreldre?
2016
Masteroppgave psykisk helsearbeid - Universitetet i Agder 2016 National as well as international research shows that people with mental retardation are more prone to develop mental ailments and behavioral problems then the general population. Still, little subject material illuminates the collaboration of services provided to this group of people. The purpose of this study is to explore how the parents of people with mental retardation and simultaneous mental illnesses/ ailments perceive the collaboration of services provided to their offspring: What are their experiences on collaboration between the different service providers? How do they view collaboration between themselves/ their offsp…