22 research outputs found
Telecom to mid-infrared spanning supercontinuum generation in hydrogenated amorphous silicon waveguides using a Thulium doped fiber laser pump source
Enantioselective Synthesis of 5,7-Bicyclic Ring Systems from Axially Chiral Allenes Using a Rh(I)-Catalyzed Cyclocarbonylation Reaction
A transfer of chirality in an intramolecular
RhÂ(I)-catalyzed allenic PausonâKhand reaction (APKR) to access
tetrahydroazulenones, tetrahydrocyclopentaÂ[<i>c</i>]Âazepinones
and dihydrocyclopentaÂ[<i>c</i>]Âoxepinones enantioselectively
(22â99% ee) is described. The substitution pattern of the allene
affected the transfer of chiral information. Complete transfer of
chirality was obtained for all trisubstituted allenes, but loss of
chiral information was observed for disubstituted allenes. This work
constitutes the first demonstration of a transfer of chiral information
from an allene to the 5-position of a cyclopentenone using a cyclocarbonylation
reaction. The absolute configuration of the corresponding cyclocarbonylation
product was also established, something that is rarely done
Partnership between public and private organizations for fruit breeding ; a case study : INRA and NOVADI in France
Partnership between public and private organizations for fruit breeding ; a case study : INRA and NOVADI in France. MACFRU
An Allenic PausonâKhand Approach to 6,12-Guaianolides
Cyclocarbonylation of α-methylene butyrolactone-containing allene-ynes affords 6,12-guaianolide ring systems. Incorporation of the α-methylene butyrolactone early in a synthetic sequence is rare for reactivity reasons; however, this moiety proves to be beneficial to the allenic PausonâKhand reaction. The three double bonds and the ketone in the resulting 5â7â5 ring system bear significant differences in their reactivity and are ideally positioned for synthetic application to 6,12-guaianolides and analogs
Application of the Dubinin-Astakhov equation to evaluation of benzene and cyclohexane adsorption isotherms on steam-gasified humic acid chars from brown coal
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
Impact of a Multimodal Telemonitoring Intervention on CPAP Adherence in Symptomatic OSA and Low Cardiovascular Risk - A Randomized Controlled Trial
International audienc
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