57 Works

Dataset and script to: Morphometric variance, evolutionary constraints and their change through time in Late Devonian Palmatolepis conodonts

Sabrina Renaud, Catherine Girard & Anne-Béatrice Dufour
Phenotypic variation is the raw material of evolution. Standing variation can facilitate response to selection along “lines of least evolutionary resistance”, but selection itself might alter the structure of the variance. Shape was quantified using 2D geometric morphometrics in Palmatolepis conodonts through the Late Devonian period. Patterns of variance were characterized along the record by the variance-covariance matrix (P-matrix) and its first axis (Pmax). The Late Frasnian was marked by environmental oscillations culminating with the...

Cassini RPWS Jupiter Encounter Calibrated Dataset

Philippe Zarka, Baptiste Cecconi, Fabiola Magalhaes, Corentin Louis & Laurent Lamy
This dataset contains calibrated Cassini-RPWS-HFR Jupiter fly-by data from 6 months of Jupiter encounter: 2000-275 (Oct 1st) 00:00 to 2001-090 (Mar 31st) 24:00. The spectral range covers 3.5 kHz to 16 MHz.

Determining the beaming of Io decametric emissions, a remote diagnostic to probe the Io-Jupiter interaction. Supplementary material: NenuFAR Data

Laurent Lamy, Serge Yerin, Philippe Zarka, Baptiste Cecconi, Julien N. Girard & Jean-Mathias Griessmeier

Préprints : guide pratique (Les)

Traduit et adapté de l'anglais, ce guide explique l’emploi des préprints, ou prépublications, à destination d’auteurs académiques et scientifiques comme du grand public.

Triangular Regulation of Cucurbit[8]uril 1:1 Complexes

Sébastien Combes, Khoa Truong Tran, MEHMET MENAF AYHAN, Hakim Karoui, Antal Rockenbauer, Alain Tonetto, Valérie Monnier, Laurence Charles, Roselyne Rosas, Stéphane Viel, Didier Siri, Paul Tordo, Sylvain Clair, Ruibing Wang, David Bardelang & Olivier Ouari
Triangular shapes have inspired scientists over time and are common in nature, such as the flower petals of oxalis triangularis, the triangular faces of tetrahedrite crystals, and the icosahedron faces of virus capsids. Supramolecular chemistry has enabled the construction of triangular assemblies, many of which possess functional features. Among these structures, cucurbiturils have been used to build supramolecular triangles, and we recently reported paramagnetic cucurbit[8]uril (CB[8]) triangles, but the reasons for their formation remain unclear....

Inclusion Complex of Fluorescent 4-Hydroxycoumarin Derivatives with Native β-Cyclodextrin:  Enhanced Stabilization Induced by the Appended Substituent

Régine Dondon & Suzanne Fery-Forgues
This work studies the interaction of substituted coumarins with β-cyclodextrin (β-CD). The role of the substituent in the 3 position was investigated. The guest molecules were two original 4-hydroxycoumarin derivatives, bearing an ethyl furoate (1) or a benzodioxanyl (2) substituent in the 3 position. Comparison was made with a nonsubstituted analogue (3). It must be noted that molecules 1 and 2 potentially offer very different complexation sites. Formation of the inclusion complex was checked by...

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  • 2021

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  • French National Centre for Scientific Research
  • University of Paris-Saclay
  • Laboratory of Space Studies and Instrumentation in Astrophysics
  • University of Orléans
  • Paris Observatory
  • Sorbonne University
  • Versailles Saint-Quentin-en-Yvelines University
  • Laboratoire d’Astrophysique de Marseille
  • PSL Research University
  • University of Lyon System