... Claudio Faccenna, Andrea Di Giulio, Giorgio Spada, Laurent Jolivet, Pierre Valla, Carole Petit, Jean-Mathieu Nocquet, Andrea Walpersdorf, ...
Tópico(s): Landslides and related hazards
1905 - University of Chicago Press | The Journal of Geology
Hussam Al Daas, Laura Grigori, Pierre Jolivet, Pierre-Henri Tournier,
Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 7 June 2019Accepted: 22 February 2021Published online: 25 May 2021Keywordsdomain decomposition, multilevel, elliptic problems, subspace correctionAMS Subject Headings65F08, 65F10, 65N55Publication DataISSN (print): 1064-8275ISSN (online): 1095-7197Publisher: Society for Industrial and Applied MathematicsCODEN: sjoce3
Tópico(s): Advanced Mathematical Modeling in Engineering
2021 - Society for Industrial and Applied Mathematics | SIAM Journal on Scientific Computing
Niall Bootland, Victorita Dolean, Pierre Jolivet, Pierre-Henri Tournier,
Solving time-harmonic wave propagation problems in the frequency domain and within heterogeneous media brings many mathematical and computational challenges, especially in the high frequency regime. We will focus here on computational challenges and try to identify the best algorithm and numerical strategy for a few well-known benchmark cases arising in applications. The aim is to cover, through numerical experimentation and consideration of the best implementation strategies, the main two-level ...
Tópico(s): Electromagnetic Scattering and Analysis
2021 - Elsevier BV | Computers & Mathematics with Applications
E. Tronc, Philippe Belleville, Jean Pierre Jolivet, Jacques Livage,
... by iron(II) adsorptionElisabeth Tronc, Philippe Belleville, Jean Pierre Jolivet, and Jacques LivageCite this: Langmuir 1992, 8, 1, ...
Tópico(s): Iron oxide chemistry and applications
1992 - American Chemical Society | Langmuir
Pietro Sternai, Christian Sue, Laurent Husson, Enrico Serpelloni, T. W. Becker, Sean D. Willett, Claudio Faccenna, Andrea Di Giulio, Giorgio Spada, Laurent Jolivet, Pierre Valla, Carole Petit, Jean‐Mathieu Nocquet, Andréa Walpersdorf, Sébastien Castelltort,
Recent measurements of surface vertical displacements of the European Alps show a correlation between vertical velocities and topographic features, with widespread uplift at rates of up to ~2–2.5 mm/a in the North-Western and Central Alps, and ~1 mm/a across a continuous region from the Eastern to the South-Western Alps. Such a rock uplift rate pattern is at odds with the horizontal velocity field, characterized by shortening and crustal thickening in the Eastern Alps and very limited deformation ...
Tópico(s): Geology and Paleoclimatology Research
2019 - Elsevier BV | Earth-Science Reviews
Produção Nacional
Revisado por pares
Camille Rossignol, Erwan Hallot, Sylvie Bourquin, Marc Poujol, Marc Jolivet, Pierre Pellenard, Céline Ducassou, Thierry Nalpas, Gloria Heilbronn, Jianxin Yu, Marie‐Pierre Dabard,
Volcaniclastic rocks are commonly used to date sedimentary series since absolute ages are routinely obtained from several geochronological methods. In this work, we present five selected geochronological studies (U-Pb on zircon) on late Paleozoic to Mesozoic volcaniclastic series from Asia, with the aim of discussing if absolute ages obtained on volcaniclastic rocks can be used directly to date sedimentation. For all these volcaniclastic series, volcanism and sedimentation are reputedly coeval and ...
Tópico(s): Geochemistry and Elemental Analysis
2018 - Elsevier BV | Sedimentary Geology
Gemma V. Bosch, Antonio Teixell, Marc Jolivet, Pierre Labaume, Daniel F. Stöckli, Mireia Domènech, Patrick Monié,
We present new apatite (U–Th)/He (AHe), apatite fission track (AFT) and zircon (U–Th)/He (ZHe) data to unravel the timing of exhumation and thrusting in the western Axial Zone of the Pyrenees and the adjacent North Pyrenean Zone (Chaînons Béarnais). In the north, ZHe data yield cooling signals between 26 and 50 Ma in the Chaînons Béarnais, which are consistent with the onset of thrust-related cooling in the neighboring Mauléon Basin modeled by previous authors. Non-reset Triassic ages are found in the ...
Tópico(s): earthquake and tectonic studies
2016 - Elsevier BV | Comptes Rendus Géoscience
E. Vargas Catalán, Elsa Huby, Pontus Forsberg, Aïssa Jolivet, Pierre Baudoz, Brunella Carlomagno, Christian Delacroix, Serge Habraken, Dimitri Mawet, Jean Surdej, Olivier Absil, Mikael Karlsson,
Context. The Annular Groove Phase Mask (AGPM) is one possible implementation of the vector vortex coronagraph, where the helical phase ramp is produced by a concentric subwavelength grating. For several years, we have been manufacturing AGPMs by etching gratings into synthetic diamond substrates using inductively coupled plasma etching. Aims. We aim to design, fabricate, optimize, and evaluate new L-band AGPMs that reach the highest possible coronagraphic performance, for applications in current ...
Tópico(s): Near-Field Optical Microscopy
2016 - EDP Sciences | Astronomy and Astrophysics
Jennifer Dumont, David Cohen, Joëlle Gérard, Yves Jolivet, Pierre Dizengremel, Didier Le Thiec,
Abstract Ozone induces stomatal sluggishness, which impacts photosynthesis and transpiration. Stomatal responses to variation of environmental parameters are slowed and reduced by ozone and may be linked to difference of ozone sensitivity. Here we determine the ozone effects on stomatal conductance of each leaf surface. Potential causes of this sluggish movement, such as ultrastructural or ionic fluxes modification, were studied independently on both leaf surfaces of three Euramerican poplar genotypes ...
Tópico(s): Light effects on plants
2014 - Wiley | Plant Cell & Environment
V. Jolivet, Pierre Bourdon, Baya Bennaï, Laurent Lombard, Didier Goular, Emilie Pourtal, G. Canat, Yves Jaouën, B. Moreau, Olivier Vasseur,
We report experimental results and theoretical analysis of coherent beam combining with active phase control fiber beam shaping. An original optical configuration for target-in-the-loop single-mode fiber amplifier coherent combining through turbulence is presented, with a lambda/15 residual phase error. The experimental results and theoretical analysis demonstrate that detection subsystem aperture reduction is paramount to lower sensitivity to backward turbulence when using a detector in the laser ...
Tópico(s): Optical Wireless Communication Technologies
2009 - IEEE Photonics Society | IEEE Journal of Selected Topics in Quantum Electronics
Jenny Renaut, Sacha Bohler, J. F. Hausman, Lucien Hoffmann, Kjell Sergeant, Nagib Ahsan, Yves Jolivet, Pierre Dizengremel,
Abstract Tropospheric ozone is the main atmospheric pollutant that causes damages to trees. The estimation of the threshold for ozone risk assessment depends on the evaluation of the means that this pollutant impacts the plant and, especially, the foliar organs. The available results show that, before any visible symptom appears, carbon assimilation and the underlying metabolic processes are decreased under chronic ozone exposure. By contrast, the catabolic pathways are enhanced, and contribute ...
Tópico(s): Air Quality and Health Impacts
2008 - Wiley | Mass Spectrometry Reviews
Marc Jolivet, Pierre Labaume, P. Monié, Maurice Brunel, Nicolas Arnaud, Marion Campani,
In this work we combined apatite fission track and biotite/K‐feldspar 40 Ar/ 39 Ar ages with tectonic data in the west central part of the Axial Zone of the Pyrenees. We discuss the exhumation ages and rates of the Néouvielle, Bordère‐Louron, and Bielsa Variscan granites and their relationships with the timing and sequence of south vergent basement thrusting within the Pyrenean orogenic prism. The 40 Ar/ 39 Ar ages on K‐feldspars from the Néouvielle massif (sample NV7) seem to indicate tectonic movements ...
Tópico(s): earthquake and tectonic studies
2007 - Wiley | Tectonics
Siegfried Lallemant, C. Truffert, Laurent Jolivet, Pierre Henry, Nicolas Chamot‐Rooke, B. de Voogd,
Tópico(s): High-pressure geophysics and materials
1994 - Elsevier BV | Tectonophysics
Hao Li, Tsuguo Kondoh, Pierre Jolivet, Kozo FURUTA, Takayuki Yamada, Benliang Zhu, Heng Zhang, Kazuhiro IZUI, Shinji Nishiwaki,
Abstract Passive heat sinks cooled by natural convection are reliable, compact, and low‐noise. They are widely used in telecommunication devices, LEDs, and so forth. This work builds upon the recent advancements in fluid topology optimization (TO) to present a case study of two‐ and three‐dimensional optimum design and thermal modeling for the natural convection problems using a reaction–diffusion equation (RDE)‐based level‐set method. To this end, first, a high‐fidelity thermal‐fluid model is constructed ...
Tópico(s): Metaheuristic Optimization Algorithms Research
2022 - Wiley | International Journal for Numerical Methods in Engineering
Pierre Jolivet, José E. Román, Stefano Zampini,
Contemporary applications in computational science and engineering often require the solution of linear systems which may be of different sizes, shapes, and structures. The goal of this paper is to explain how two libraries, PETSc and HPDDM, have been interfaced in order to offer end-users robust overlapping Schwarz preconditioners and advanced Krylov methods featuring recycling and the ability to deal with multiple right-hand sides. The flexibility of the implementation is showcased and explained ...
Tópico(s): Advanced NMR Techniques and Applications
2021 - Elsevier BV | Computers & Mathematics with Applications
Hao Li, Tsuguo Kondoh, Pierre Jolivet, Kozo FURUTA, Takayuki Yamada, Benliang Zhu, Kazuhiro IZUI, Shinji Nishiwaki,
We propose a new framework for the two- and three-dimensional topology optimization (TO) of the weakly-coupled fluid–structure system. The proposed design methodology uses a reaction–diffusion equation (RDE) for updating the level-set function based on the topological sensitivity. From the numerical point of view, two key ingredients are highlighted: (i) the body-fitted adaptive mesh strategy allows the disjoint reunion of a global mesh that contains several (fluid/solid) subdomains, whose interfaces ...
Tópico(s): Advanced Mathematical Modeling in Engineering
2021 - Elsevier BV | Applied Mathematical Modelling
Florian Feppon, Grégoire Allaire, Charles Dapogny, Pierre Jolivet,
We present a topology optimization approach for the design of fluid-to-fluid heat exchangers which rests on an explicit meshed discretization of the phases at stake, at every iteration of the optimization process. The considered physical situations involve a weak coupling between the Navier–Stokes equations for the velocity and the pressure in the fluid, and the convection–diffusion equation for the temperature field. The proposed framework combines several recent techniques from the field of shape ...
Tópico(s): Building Energy and Comfort Optimization
2021 - Elsevier BV | Computer Methods in Applied Mechanics and Engineering
Hao Li, Takayuki Yamada, Pierre Jolivet, Kozo FURUTA, Tsuguo Kondoh, Kazuhiro IZUI, Shinji Nishiwaki,
We propose a parallel distributed and open-source framework for full-scale 3D structural topology optimization (TO). This can be achieved by properly combining parallel computing and mesh adaption techniques by adopting a reaction–diffusion equation (RDE) based level-set method. Mesh adaptivity which discretizes and optimizes an implicitly defined surface (level-set interface) can allow us to reach an optimal solution with high-resolution and clear boundaries. Our framework can be easily extended to ...
Tópico(s): Advanced Numerical Analysis Techniques
2021 - Elsevier BV | Finite Elements in Analysis and Design
Florian Feppon, Grégoire Allaire, Charles Dapogny, Pierre Jolivet,
An efficient framework is described for the shape and topology optimization of realistic three-dimensional, weakly-coupled fluid-thermal-mechanical systems. At the theoretical level, the proposed methodology relies on the boundary variation of Hadamard for describing the sensitivity of functions with respect to the domain. From the numerical point of view, three key ingredients are used: (i) a level set based mesh evolution method allowing to describe large deformations of the shape while maintaining ...
Tópico(s): Advanced Mathematical Modeling in Engineering
2020 - Elsevier BV | Journal of Computational Physics
M.A. Badri, Pierre Jolivet, Benoı̂t Rousseau, Yann Favennec,
Two Krylov subspace methods, the GMRES and the BiCGSTAB, are analyzed for solving the linear systems arising from the mixed finite element discretization of the discrete ordinates radiative transfer equation. To increase their convergence rate and stability, the Jacobi and block Jacobi methods are used as preconditioners for both Krylov subspace methods. Numerical experiments, designed to test the effectiveness of the (preconditioned) GMRES and the BiCGSTAB, are performed on various radiative transfer ...
Tópico(s): Matrix Theory and Algorithms
2018 - Elsevier BV | Computers & Mathematics with Applications
M.A. Badri, Pierre Jolivet, B. Rousseau, Steven Le Corre, Hugues Digonnet, Yann Favennec,
The discrete ordinate method coupled with the finite element method is often used for the spatio-angular discretization of the radiative transfer equation. In this paper we attempt to improve upon such a discretization technique. Instead of using standard finite elements, we reformulate the radiative transfer equation using vectorial finite elements. In comparison to standard finite elements, this reformulation yields faster timings for the linear system assemblies, as well as for the solution phase ...
Tópico(s): Gas Dynamics and Kinetic Theory
2018 - Elsevier BV | Journal of Quantitative Spectroscopy and Radiative Transfer
Ryadh Haferssas, Pierre Jolivet, F. Nataf,
Optimized Schwarz methods (OSMs) are very popular methods which were introduced by P. L. Lions in [On the Schwarz alternating method III: A variant for nonoverlapping subdomains, in 3rd International Symposium on Domain Decomposition Methods for Partial Differential Equations (Houston, TX, 1989), T. F. Chan, R. Glowinski, J. Périaux, and O. Widlund, eds., SIAM, Philadelphia, 1990, pp. 202--223] for elliptic problems and by B. Després in [C. R. Acad. Sci. Paris Ser. I Math., 311 (1990), pp. 313--316] ...
Tópico(s): Matrix Theory and Algorithms
2017 - Society for Industrial and Applied Mathematics | SIAM Journal on Scientific Computing
Tamar Saison, Nicolas Chemin, Corinne Chanéac, Olivier Durupthy, Laurence Mariey, Françoise Maugé, Vlasta Brezová, Jean‐Pierre Jolivet,
Bismuth vanadate has attractive photocatalytic properties under visible light. The influence of structure and morphology of BiVO4 nanomaterials on its photocatalytic properties in the UV and the visible domain was investigated. The selection of different sets of synthetic parameters in aqueous solution—pH or the use of organic additives—allowed the formation of tetragonal zircon, tetragonal scheelite, and monoclinic scheelite structure and different morphologies of that last phase. First, the tetragonal ...
Tópico(s): Gas Sensing Nanomaterials and Sensors
2015 - American Chemical Society | The Journal of Physical Chemistry C
Pierre Jolivet, Michael T. Schmitt,
Certainly, Carabidae, Curculionidae and Chrysomelidae are the beetle families that are most studied and the most inspiring for scientific papers. Those three families are also among the most numerous and present the most colorful beetles. Publications go from simple articles in the past to sophisticated papers using cladistics, molecular biology and statistics, in pure research or, for leaf-beetles or weevils, in agriculture. Thousands of papers are published each year on Chrysomelidae. Probably ...
Tópico(s): Lepidoptera: Biology and Taxonomy
2015 - Pensoft Publishers | ZooKeys
Ryadh Haferssas, Pierre Jolivet, Frédéric Nataf,
Optimized Schwarz methods (OSM) are very popular methods that were introduced in [11] for elliptic problems and in [3] for propagative wave phenomena. We build here a coarse space for which the convergence rate of the two-level method is guaranteed regardless of the regularity of the coefficients. We do this by introducing a symmetrized variant of the ORAS (Optimized Restricted Additive Schwarz) algorithm [17] and by identifying the problematic modes using two different generalized eigenvalue problems ...
Tópico(s): Electromagnetic Scattering and Analysis
2015 - Elsevier BV | Comptes Rendus Mathématique
B. Letouvet, C. Arvieux, Hélène Leroy, Jean‐Louis Polard, J.-M. Chapplain, Harold Common, Claude Ecoffey, D. Huten, Anne Jolivet‐Gougeon, Pierre Tattevin,
Prosthetic joint infections (PJI) may be cured in selected patients with debridement and prosthesis retention. We aimed to identify predictors of failure to better target patients most likely to benefit from this conservative strategy.Observational study of patients presenting with PJI initially treated at our hospital with debridement between 2008 and 2011, with>6 months of post-treatment follow-up.Sixty consecutive patients presenting with PJI (hip, n=34; knee, n=26) fulfilled the inclusion criteria. ...
Tópico(s): Infective Endocarditis Diagnosis and Management
2015 - Elsevier BV | Médecine et Maladies Infectieuses
Damien Do Couto, Charles Gumiaux, Romain Augier, Noëmie Lebret, Nicolas Folcher, Gwénaël Jouannic, Laurent Jolivet, Jean‐Pierre Suc, Christian Gorini,
The formation of sedimentary basins in the Alboran domain is associated with the exhumation of metamorphic core complexes over a circa 15 Ma period through a transition from regional late-orogenic extension to compression.An integrated study coupling field analysis and gravity data acquisition was performed in the Sorbas basin in the southeastern Betic Cordillera.Detailed field observations revealed for the first time that extensional tectonics occurred before shortening in this basin.Two extensional ...
Tópico(s): Geological formations and processes
2014 - Wiley | Tectonics
Tamar Saison, Pierre Gras, Nicolas Chemin, Corinne Chanéac, Olivier Durupthy, Vlasta Brezová, Christophe Colbeau‐Justin, Jean‐Pierre Jolivet,
Bismuth tungstate has attractive photocatalytic properties under visible light. A better understanding of the origin of that good activity should allow its control and its optimization. An improved photocatalytic activity to different pollutants was obtained using bismuth-based oxide obtained by microwave-assisted synthesis combined with the addition of sodium dodecylsulfate as a size tailoring agent. It is shown using electron paramagnetic resonance that bismuth tungstate is able to generate hydroxyl ...
Tópico(s): Perovskite Materials and Applications
2013 - American Chemical Society | The Journal of Physical Chemistry C
Pierre Jolivet, Victorita Dolean, Frédéric Hecht, F. Nataf, Christophe Prud'Homme, Nicole Spillane,
- In this document, we present a parallel implementation in freefem++ of scalable two-level domain decomposition methods. Numerical studies with highly heterogeneous problems are then performed on large clusters in order to assert the performance of our code.
Tópico(s): Electromagnetic Simulation and Numerical Methods
2012 - De Gruyter | Journal of Numerical Mathematics
Alejandra López‐Juárez, Sylvie Remaud, Zahra Hassani, Pascale Jolivet, Jacqueline Pierre Simons, Thomas Sontag, Kazuaki Yoshikawa, Jack Price, Ghislaine Morvan-Dubois, Barbara A. Demeneix,
The subventricular zone (SVZ) neural stem cell niche contains mixed populations of stem cells, transit-amplifying cells, and migrating neuroblasts. Deciphering how endogenous signals, such as hormones, affect the balance between these cell types is essential for understanding the physiology of niche plasticity and homeostasis. We show that Thyroid Hormone (T3) and its receptor, TRα1, are directly involved in maintaining this balance. TRα1 is expressed in amplifying and migrating cells. In vivo gain- ...
Tópico(s): FOXO transcription factor regulation
2012 - Elsevier BV | Cell stem cell