Corinne Sanchez
Centre national de la recherche scientifique
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Publication
Featured researches published by Corinne Sanchez.
Journal of Analytical Atomic Spectrometry | 2013
Florian Meirer; Yijin Liu; Emeline Pouyet; Barbara Fayard; Marine Cotte; Corinne Sanchez; Joy C. Andrews; Apurva Mehta; Philippe Sciau
Roman black gloss ceramics from two different locations and separated by 50–80 years were investigated by X-ray absorption near edge structure analysis in full field hard X-ray transmission microscopes. These spectro-microscopy measurements were complemented by Raman spectroscopy, and X-ray diffraction spot analyses to gain insights into possible differences in manufacturing technology. Our results indicate that the two vessels underwent significantly different firing protocols, suggesting that there was a surprisingly quick evolution of a complex technological process in response to changing needs and tastes of a burgeoning empire. Furthermore, our results show that the ability of the full field X-ray spectro-microscope to investigate large sample areas (from hundreds of µm2 to as much as 2 mm2) with high spatial resolution (of 300 nm down to 30 nm) together with its ability to correlate sample porosity (derived from tomography) with the distribution of chemical phases makes it an invaluable tool in the investigation of nanoscale processes in hierarchically heterogeneous chemical systems—from Roman ceramics to some of the most advanced technological products of today.
Journal of Structural Biology | 2012
Marie-France Giraud; Patrick Paumard; Corinne Sanchez; Daniel Brèthes; Jean Velours; Alain Dautant
The F(1)F(O)-ATP synthase is a rotary molecular nanomotor. F(1) is a chemical motor driven by ATP hydrolysis while F(O) is an electrical motor driven by the proton flow. The two stepping motors are mechanically coupled through a common rotary shaft. Up to now, the three available crystal structures of the F(1)c(10) sub-complex of the yeast F(1)F(O)-ATP synthase were isomorphous and then named yF(1)c(10)(I). In this crystal form, significant interactions of the c(10)-ring with the F(1)-head of neighboring molecules affected the overall conformation of the F(1)-c-ring complex. The symmetry axis of the F(1)-head and the inertia axis of the c-ring were tilted near the interface between the F(1)-central stalk and the c-ring rotor, resulting in an unbalanced machine. We have solved a new crystal form of the F(1)c(10) complex, named yF(1)c(10)(II), inhibited by adenylyl-imidodiphosphate (AMP-PNP) and dicyclohexylcarbodiimide (DCCD), at 6.5Å resolution in which the crystal packing has a weaker influence over the conformation of the F(1)-c-ring complex. yF(1)c(10)(II) provides a model of a more efficient generator. yF(1)c(10)(II) and bovine bF(1)c(8) structures share a common rotor architecture with the inertia center of the F(1)-stator close to the rotor axis.
Journal of Analytical Atomic Spectrometry | 2015
Yoanna Leon; Philippe Sciau; Michel Passelac; Corinne Sanchez; Robert Sablayrolles; P. Goudeau; Nobumichi Tamura
To understand how the terra sigillata technology was transferred from Italy to Gaul, a large corpus of samples from various worskshops was studied by using standard laboratory techniques (Raman spectroscopy, SEM, electron microprobe analysis and colorimetry). Based on these results, a few representative samples were selected and investigated by synchrotron radiation at ALS on the 12.3.2 microdiffraction beamline. The beamline is very adapted to the crystallographic study of thin layers and allows us to determine precisely the mineral composition of the sigillata slips. The set of findings revealed significant differences between the Italic and Gallic slips, which suggest a modification in the manufacturing process. The transfer of the sigillata technique to Gaul is associated with an increase of the firing temperatures due to the use of more refractory clay. This change has no significant influence on their esthetic appearance (brilliance and color) but modify their mechanical properties, resulting in a stronger resistance for the Gallic slips. The implication of these results in archeological context is discussed. In particular, we will try to propose assumptions on the reason for the change in the manufacturing process.
Bioorganic & Medicinal Chemistry Letters | 2012
Jean-Frédéric Sanchez; Brice Kauffmann; Axelle Grélard; Corinne Sanchez; Véronique Trézéguet; Ivan Huc; Guy J.-M. Lauquin
Atractyloside (ATR) was characterized in 1868 and until now structural studies on diterpenic moiety had been done through the characterization of ATR derivatives; while the glycosidic moiety seemed to be a β-D-glucopyranose a recent crystal structure of the mitochondrial ATP/ADP carrier in complex with CATR showed an α-D-glucopyranose. We decided to re-examine the ATR and CATR structures by crystallographic study of ATR.
Journal of Raman Spectroscopy | 2016
Tian Wang; Corinne Sanchez; Jesse Groenen; Philippe Sciau
Lattara | 2004
Michel Py; Andrès Adroher; Carmen Belarte; Michael Dietler; Marivi Gomis; Laura Paterno; Pascale Pinto; Stéphanie Raux; Corinne Sanchez; Arès Vidal
Quaternary International | 2018
Camille Faïsse; Vivien Mathé; Guillaume Bruniaux; Julie Labussière; Julien Cavero; Marie-Pierre Jézégou; David Lefevre; Corinne Sanchez
Actas del V Congreso Internacional de Arqueología Subacuática (IKUWA V), 2016, págs. 507-512 | 2016
Corinne Sanchez; Marie-Pierre Jézégou
Archive | 2011
Corinne Sanchez; Marie-Pierre Jézégou; Gaspard Pagès
Les structures portuaires de l'arc atlantique dans l'Antiquité, bilan et perspectives de recherche | 2008
Corinne Sanchez; Marie-Pierre Jézégou; Vivien Mathé; Marion Druez