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8 results on '"Baudoin, S."'

3. BerILL: The ultimate humidity chamber for neutron scattering

Author

Gonthier, J., Barrett, M.A., Aguettaz, O., Baudoin, S., Bourgeat-Lami, E., Demé, B., Grimm, N., Haus, T., Kiefer, K., Lelièvre-Berna, E., Perkins, A., and Wallacher, D.

Abstract

We present the design and the performances of a precision humidity chamber for neutron diffraction which is the result of a very fruitful collaboration between the Helmholtz-Zentrum Berlin and the Institut Laue-Langevin. The sample temperature can be set between 10 and 85°C. The relative humidity is controlled from 10 to 99.9%±0.01% by controlling the temperatures of the sample and a water bath at the millidegree Celsius scale. Sample exchanges are extremely easy and the operation only requires entering two parameters: sample temperature and relative humidity. The performances are confirmed by neutron diffraction measurements performed on DMPC and DOPC.

Published
2019

4. Mission archéologique franco-ouzbèque de Bactriane septentrionale : Rapport 11 (2003)

Author

Leriche, Pierre, Pidaev, Sakirdzan Rasulevic, Abdullaev, Kazim, Appert, S., Baudoin, S., Facquez, Dorothée, Gavison, Sarah, Houal, Jean-Baptiste, Leriche, Anne, Lopez Prat, M., Moustafakoulov, Samareddine, Mouradova, D. H., Person, T., Reynard, S., Rohmer, Jérôme, Scherrer-Schaub, Cristina, Archéologies d'Orient et d'Occident et Sciences des textes (AOROC), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Institut d'Archéologie de l'Académie des Sciences d'Ouzbékistan, Académie des Sciences, Institut de France-Institut de France, Laboratoire des Matériaux Céramiques et Procédés Associés - EA 2443 (LMCPA), Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-INSA Institut National des Sciences Appliquées Hauts-de-France (INSA Hauts-De-France), Archéologies et Sciences de l'Antiquité (ArScAn), Université Paris 1 Panthéon-Sorbonne (UP1)-Université Paris Nanterre (UPN)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS-PSL), Académie des Sciences [Paris], Université de Valenciennes et du Hainaut-Cambrésis (UVHC), and Université Paris 1 Panthéon-Sorbonne (UP1)-Université Paris 8 Vincennes-Saint-Denis (UP8)-Université Paris Nanterre (UPN)-Ministère de la Culture et de la Communication (MCC)-Institut national de recherches archéologiques préventives (Inrap)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Tchingiz Tepe, [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, bouddhisme, fortification, temple (en), sépulture, kiln (en), Bactriane, céramique hellénistique, burial (en), temple, Buddhism (en), lion (en), fortification (en), lion, Termez (en), citadelle, Bactria (en), four, Islamic World (en), protome (en), ép islamique, Termez, Tchingiz Tepe (en), Payon Kourgane, protomé, citadel (en)
Abstract

Rapport de mission illustré (cartes, plans, photographies).; This report describes the excavations at Termez, in the citadel (Hellenistic ware, burial in the Islamic World) ; at Tchingiz Tepe (fortification, temple, kiln, lion's protome). It deals with the Bactrian buddhism.; Ce rapport décrit les fouilles de Termez, dans la citadelle (céramique hellénistique, sépultures de l'époque islamique) ; à Tchingiz Tepe (fortifications, temple, four, protomé de lion) et à Payon Kourgane. Il traite aussi du bouddhisme en Bactriane.

Published
2003

6. Gas Adsorption in Zeolite and Thin Zeolite Layers: Molecular Simulation, Experiment, and Adsorption Potential Theory.

Author

Kellouai W, Judeinstein P, Plazanet M, Baudoin S, Drobek M, Julbe A, and Coasne B

Abstract

Molecular simulations and experiments are used to investigate methane adsorption in bulk and thin layers of MFI zeolite (silicalite-1). After comparing the theoretical adsorption data obtained using Grand Canonical Monte Carlo simulations for bulk MFI at various temperatures against experiments, zeolite layers with different crystalline orientations and levels of surface flexibility are considered. The data obtained for such prototypical systems allow us to rationalize both the qualitative and quantitative impact of external surface in nanoporous solids. In particular, due to strong confinement in zeolite pores, methane is found to adsorb at low pressures in the core of the zeolite while external surface adsorption occurs at pressures where the internal porosity of zeolite is saturated. Using Polanyi's adsorption potential theory, which is derived here from Hill's general scheme for adsorption, we provide a simple thermodynamic formalism to predict consistently adsorption both in the internal porosity and at the external surface of nanoporous solids. While this seminal theory has been already applied for gases in nanoporous solids, its extension to describe both surface and volume adsorption is important to provide a general rational framework for fluid adsorption in finely divided materials. We also discuss the applicability of this formalism for gas adsorption data under supercritical conditions.

Published
2022
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7. Solid phases of spatially nanoconfined oxygen: a neutron scattering study.

Author

Kojda D, Wallacher D, Baudoin S, Hansen T, Huber P, and Hofmann T

Abstract

We present a comprehensive neutron scattering study on solid oxygen spatially confined in 12 nm wide alumina nanochannels. Elastic scattering experiments reveal a structural phase sequence known from bulk oxygen. With decreasing temperature cubic γ-, orthorhombic β- and monoclinic α-phases are unambiguously identified in confinement. Weak antiferromagnetic ordering is observed in the confined monoclinic α-phase. Rocking scans reveal that oxygen nanocrystals inside the tubular channels do not form an isotropic powder. Rather, they exhibit preferred orientations depending on thermal history and the very mechanisms, which guide the structural transitions.

Published
2014
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