Search results for "Liaison"

Contribution à l'étude des liaisons optiques atmosphériques : propagation, disponibilité et fiabilité.

2005

In this work we study the fog attenuation in the visible and infrared spectral band related to Free Space Optics (FSO). Based on the Mie scattering theory, fog extinction coefficients for different particle size distributions as a function of wavelength were derived. A simple analytical model allowing the prediction of atmospheric transmission for the 0.69 - 1.55 µm spectral band was developed. This model is valid for advection and convection fog and for visibility range between 50 to 1000 m. This model, implemented into software developed at FT R&D, allows the prediction of the Quality of Service of FSO links. Finally, we performed an experimental study to compare the fog effect on two FSO…

Propriétés et performances de phosphines ferrocéniques dans le couplage C-O, C-S et C-N : nouvelles méthodologies de synthèse au palladium

2012

Multidentate ligands usually show great activities in low loading organometallic catalysis in palladium. Among these ligands, the use of ferrocenyl polyphosphane ligands give interesting results. Robust palladium-ferrocenyl triphosphane catalytic systems have permitted to obtain biarylamines and aryl-heteroaryl ethers in the presence of low catalytic loadings. DFT studies on catalytic cycle during formation of aryl-heteroaryl ethers were carried out. The presence of third phosphino group stabilizes a transition state which enhances the rate of the reductive elimination. Triarylamines were obtained with ferrocenyl diphosphane in the presence of 2 mol% of palladium loading. Moderate to excell…

The BEYWATCH FP 7th European Scientific Project: dissemination and standardization activities, liaison with other projects

2012

The outcome of the BEYWATCH project has been spread in various ways, including different publication channels such as scientific journals and conferences, exhibitions, standardisation efforts and liaison with other relevant scientific projects. An overview of the dissemination activities is given in section 2, they include details about the Internet presence and the project presentations in workshops and conferences. Besides, some effort has been put into contribution to standardization. Contributions to standardization is found in section 3. Further, the project has set up liaisons to other European research projects. For each such activity, topics and forms of cooperation are described in…

Thermodynamic analysis of binding between drugs and glycosaminoglycans by isothermal titration calorimetry and fluorescence spectroscopy

2007

The thermodynamics of the interaction of positively charged drug molecules with negatively charged glycosaminoglycans (GAGs) is investigated by isothermal titration calorimetry (ITC) and fluorescence spectroscopy. The drugs considered are propranolol hydrochloride, tacrine, and aminacrine, and the polymers used as model GAGs are dextran sulfate, chondroitin sulfate, and hyaluronic acid. The ITC results show that the interaction between drugs and GAGs is via direct binding and that GAGs bind to drugs at one set of sites. Large negative values of heat capacity change (DeltaC(p)) are observed upon binding of GAGs to drugs. Such negative DeltaC(p) is not expected for purely electrostatic intera…

Assembly and encapsulation of coordination tectons driven by hydrogen-bondingand space-filling

2001

[FR] Le composé ¿Fe(LI)3¿2¿Fe(H2O)6¿(ClO4)6 (2), LI = 1,10-phénanthroline-5,6-dione, a été synthétisé et caractérisé. La structure cristalline 2 est définie par un assemblage bidimensionnel non covalent, peu commun, constitué par des tectons chiraux ¿Fe(LI)3¿2+, assemblés par des cations ¿Fe(H2O)6¿2+ encapsulés dans des cages. Ces cages sont formées par 12 liaisons hydrogène établies entre les molécules d¿eau coordinées et les groupes dione appartenant à six molecules chirales ¿Fe(LI)3¿2+ ¿, ¿ alternées.

Ikuiset naamiaiset : tulkinnallisia haasteita Choderlos de Laclos'n kirjeromaanissa Les Liaisons dangereuses

2006

Union recognition in Britain's offshore oil and gas industry: implications of the Employment Relations Act 1999

2004

The Employment Relations Act 1999 (ERA) has provided trade unions in the UK with new opportunities for achieving recognition. After a long history of anti-unionism in the offshore oil and gas industry, employers have voluntarily ceded recognition to Trades Union Congress (TUC)-affiliated trade unions. The legitimacy of this recognition process has been contested by the non-TUC Offshore Industry Liaison Committee (OILC), an offshore workers’ union, seeking to act as a recognised bargaining agent. The ERA may be promoting ‘business friendly’ agreements at the expense of claims to recognition of other bargaining agents and of democratic employee choice.

“Les Liaisons dangereuses de Laclos et la transposition cinématographique de Frears”

2014

Study of the different polymorphs of alumina and transitional phases appearing in the first oxidation stage of aluminium : simulation at the atomic s…

2014

The goal of this work is to develop a new SMTB-Q potential in order to study the early stages of the oxidation of aluminium by molecular dynamics (MD).Our potential is able to model different alumina polymorphs as well as transitions from the amorphous state to a crystalline phase. Our approach couples a covalent term with the charge. It uses Rapp_ and Goddard scheme for the electrostatic part and the model of alternating network developed by C. Noguera for the covalent part.The SMTB-Q potential was validated with a Monte Carlo approach. This study shows that the potential SMTB-Q gives satisfactory results for the Al-O bonding in different atomic configurations. The bonding results from the…

Factitious disorders and pathological self-harm in a hospital population: an interdisciplinary challenge.

2002

Factitious disorder, Munchausen's Syndrome, and deliberate self-harm have recently been conceptualized as different facets of self-destructive behavior. A descriptive typological classification has been presented by Willenberg et al., but has not yet been tested with a clinical sample. The instrument distinguishes between direct self-harm (e.g., self-inflicted wounds), self-induced disease (e.g., factitious fever), and indirect self-harm delegated to medical staff (e.g., repeated operations occasioned by feigned symptoms). All patients referred to the psychosomatic-psychotherapeutic liaison-consultation service or to the outpatients' department within 14 months (n = 995) and all patients di…