Determination of aqueous inclusion complexation constants and stoichiometry of alkyl(methyl)-methylimidazolium-based ionic liquid cations and neutral cyclodextrins by affinity capillary electrophoresis

Affinity CE (ACE) method was developed to characterize the complex formation between seven alkyl(methyl)methylimidazolium-based ionic liquid (IL) cations and eight neutral cyclodextrins (CD). The effective mobility data of the IL cations were processed according to classical nonlinear and linear treatments to obtain the complex stoichiometry and formation constant K. The majority of systems followed a 1:1 complexation stoichiometry model but in four cases a 1:2 stoichiometry was better satisfied. The K values obtained for each IL were compared to elucidate the main influences of IL and CD nature. The availability of these data should lend support to various application areas, including the screening and tailoring of new interactions in the solution for CE

Nonaqueous capillary electrophoretic behavior of 2-aryl propionic acids in the presence of an achiral ionic liquid - A chemometric approach

Ionic liquids (ILs) appear really attractive as electrolyte additives in nonaqueous capillary electrophoresis (NACE). These salts may offer new possibilities of interactions to modulate analyte effective mobilities. The presence of 1-n-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (BMIM NTf2) in acetonitrile/alcohol background electrolytes (BGEs) was investigated in this work. The aim of this study was to elucidate the influence of the IL concentration on the electrophoretic behavior of four arylpropionic acids and to identify the interactions between the analytes and the 1L cation. The influence on mobility of the IL concentration, the nature and the proportion of the organic solvents, and the concentration of the ionic components of the BGE was first studied by a univariate approach. A four-factor D-optimal experimental design was then applied to provide a deeper insight into analyte interaction with IL cation present both free in BGE and adsorbed onto the capillary wall. (c) 2006 Elsevier B.V. All rights reserved

Life insurance in a contingent claim framework : pricing and regulatory implications

This paper was presented at the 20th Seminar of the European Group of Risk and Insurance Economists in RotterdamSIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : DO 2335 (9) / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Commissioning of the DESIR High-Resolution Separator at CENBG

International audienceDESIR is the low-energy part of the SPIRAL2 ISOL facility under construction at GANIL. The high-resolution mass separator (HRS) included in DESIR is a 180 degree symmetric online separator with two 90 degree magnetic dipole sections arranged with electrostatic quadrupoles, sextupoles and a multipole on the mid plane. The HRS is now completely mounted at CENBG and under commissioning for the next 2 to 3 years before its transfer at the entrance of the DESIR facility. The objective is to test, characterise and correct all HRS elements contributing to the higher order aberration by performing experimental measurements and comparing them with the results from different simulation tools. The recently mounted pepperpot-type emittance-meter will allow us to observe the emittance figures and dynamically tune the multipole to improve the optical parameters of the HRS. We will present the first results concerning the hexapolar correction with the multipole, the associated emittance measurements and the resolution currently achieved

Agricultural landscapes and the Loire River influence the genetic structure of the marbled newt in Western France

Amphibians are particularly sensitive to landscape fragmentation. Potential barriers between breeding sites can negatively infuence the dispersal of individuals and increase genetic structure between populations. In this study, we genotyped 10 microsatellites for 334 marbled newts (Triturus marmoratus) at 11 diferent locations in Western France. Samples were collected in diferent regions with contrasting agricultural landscapes (low and high proportion of arable land in the north and south, respectively). We found a strong genetic structure between the northern and southern sampling sites. Isolation by distance was recorded after 62km, but within the northern region, little or no genetic structure was detected over large distances (up to 114km). Genetic structure at shorter distance (43km) was found between sites situated in landscapes with larger amounts of arable lands. A signifcant positive relationship was found between the pairwise genetic distance (Fst) between sites and the amount of arable land together with the distance between sites. Our results suggest that the Loire River might act as a corridor for the marbled newt, while arable land might act as a barrier. Finally, although a large city is located between sampling sites, no efect was detected on population structure

Agricultural landscapes and the Loire River influence the genetic structure of the marbled newt in Western France

This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.Amphibians are particularly sensitive to landscape fragmentation. Potential barriers between breeding sites can negatively infuence the dispersal of individuals and increase genetic structure between populations. In this study, we genotyped 10 microsatellites for 334 marbled newts (Triturus marmoratus) at 11 diferent locations in Western France. Samples were collected in diferent regions with contrasting agricultural landscapes (low and high proportion of arable land in the north and south, respectively). We found a strong genetic structure between the northern and southern sampling sites. Isolation by distance was recorded after 62km, but within the northern region, little or no genetic structure was detected over large distances (up to 114km). Genetic structure at shorter distance (43km) was found between sites situated in landscapes with larger amounts of arable lands. A signifcant positive relationship was found between the pairwise genetic distance (Fst) between sites and the amount of arable land together with the distance between sites. Our results suggest that the Loire River might act as a corridor for the marbled newt, while arable land might act as a barrier. Finally, although a large city is located between sampling sites, no efect was detected on population structure.publishedVersio

Reprise de la discussion sur les évènements de la veille aux Jacobins, lors de la séance du 20 brumaire an III (10 novembre 1794)

Legendre (de Paris) Louis, Camboulas Simon, Clauzel Jean-Baptiste, Le Tourneur Etienne-Francois-Louis-Honnoré, Thierriet Claude, Duhem Pierre-Joseph, Lesage-Senault Gaspard-Jean-Joseph, Prieur (de la Marne), Billaud-varenne Jacques nicolas, Pérès de Lagesse Emmanuel, Baudin Pierre charles louis, Du Roy Jean-Michel, Goupilleau (de Fontenay) Jean-François. Reprise de la discussion sur les évènements de la veille aux Jacobins, lors de la séance du 20 brumaire an III (10 novembre 1794). In: Archives Parlementaires de 1787 à 1860 - Première série (1787-1799) Tome CI - Du 19 au 30 brumaire an III (9 au 20 novembre 1794) Paris : CNRS éditions, 2005. pp. 80-83

Reprise de la discussion sur les évènements de la veille aux Jacobins, lors de la séance du 20 brumaire an III (10 novembre 1794)

Legendre (de Paris) Louis, Camboulas Simon, Clauzel Jean-Baptiste, Le Tourneur Etienne-Francois-Louis-Honnoré, Thierriet Claude, Duhem Pierre-Joseph, Lesage-Senault Gaspard-Jean-Joseph, Prieur (de la Marne), Billaud-varenne Jacques nicolas, Pérès de Lagesse Emmanuel, Baudin Pierre charles louis, Du Roy Jean-Michel, Goupilleau (de Fontenay) Jean-François. Reprise de la discussion sur les évènements de la veille aux Jacobins, lors de la séance du 20 brumaire an III (10 novembre 1794). In: Archives Parlementaires de 1787 à 1860 - Première série (1787-1799) Tome CI - Du 19 au 30 brumaire an III (9 au 20 novembre 1794) Paris : CNRS éditions, 2005. pp. 80-83