Publications

• Article dans une revue

Nonexistence of Levi flat hypersurfaces with positive normal bundle in compact Kähler manifolds of dimension ≥3

Séverine Biard, Andrei Iordan

Let [Formula: see text] be a compact connected Kähler manifold of dimension [Formula: see text] and [Formula: see text] a [Formula: see text] Levi flat hypersurface in [Formula: see text]. Then the normal bundle to the Levi foliation does not admit a Hermitian metric with positive curvature along…

International Journal of Mathematics, 2020, 31 (01), pp.2050004. ⟨10.1142/S0129167X20500044⟩. ⟨hal-02985883⟩

• Article dans une revue

Qualitative analysis of a curvature equation modeling MEMS with vertical loads

Chiara Corsato, Colette De Coster, Franco Obersnel, Pierpaolo Omari

We investigate existence, multiplicity and qualitative properties of the solutions of the Dirichlet problem for the singularly perturbed prescribed mean curvature equation - (1 - bu) div(\frac{\nabla u}{\sqrt{1 + |\nabla u|^2}}\Big) = frac{a}{(u-R)^2} +\frac{b}{\sqrt{1 + |\nabla u|^2}}, in \Omega,…

Nonlinear Analysis: Real World Applications, 2020, 55, pp.103123. ⟨10.1016/j.nonrwa.2020.103123⟩. ⟨hal-03721631⟩

• Article dans une revue

A combined finite volume - finite element scheme for a low-Mach system involving a Joule term

Caterina Calgaro, Claire Colin, Emmanuel Creusé

In this paper, we propose a combined finite volume-finite element scheme, for the resolution of a specific low-Mach model expressed in the velocity, pressure and temperature variables. The dynamic viscosity of the fluid is given by an explicit function of the temperature, leading to the presence of…

AIMS Mathematics, 2020, 5 (1), pp.311-331. ⟨10.3934/math.2020021⟩. ⟨hal-02398893⟩

• Article dans une revue

Synthesis, crystal structure and magnetic behavior of a new calcium magnesium and iron orthophosphate Ca2MgFe2(PO4)4

Ahmed Ould Saleck, Cyrille Albert-Mercier, Claudine Follet-Houttemane, Olivier Mentré, Abderrazzak Assani, M. Saadi, L. El Ammari

The structure of the new calcium magnesium iron orthophosphate, Ca2MgFe2(PO4)4 was determined from single crystal X-ray diffraction data. It crystallizes in the orthorhombic system, space group Pbca, with all atoms in general positions among which two sites are disordered. The crystal structure of…

Journal of Solid State Chemistry, 2020, 292, pp.121715. ⟨10.1016/j.jssc.2020.121715⟩. ⟨hal-03094584⟩

• Rapport

La vague dans la matrice, The Wave in the Matrix

Gaëtan Robillard, Caterina Calgaro, Emmanuel Creusé

La Vague dans la matrice examine la relation entre mathématiques et environnement, en particulier la façon dont les sciences du climat inscrivent de nouveaux signes dans le monde. Le travail se matérialise dans un réseau de surfaces en cuivre et de processeurs qui simulent un champ de vagues généré…

[Rapport de recherche] Université de Lille (2018-..). 2020, pp.2020:02. ⟨hal-03133380⟩

• Article dans une revue

Mechanical properties of thermally sprayed porous alumina coating by Vickers and Knoop indentation

Ghailen Ben Ghorbal, Arnaud Tricoteaux, Anthony Thuault, H. Ageorges, F. Roudet, D. Chicot

Depending on the thermal spraying conditions, coatings obtained can present different defects, like pores, cracks and/or unmelted particles, and different surface roughnesses, that can affect the determination of the hardness and elastic modulus. The present work investigates the mechanical…

Ceramics International, 2020, 46 (12), pp.19843-19851. ⟨10.1016/j.ceramint.2020.05.039⟩. ⟨hal-02937709⟩

• Article dans une revue

Uniform a priori estimates for elliptic problems with impedance boundary conditions

Théophile Chaumont-Frelet, Serge Nicaise, Jérôme Tomezyk

We derive stability estimates in H2 for elliptic problems with impedance boundary conditions that are uniform with respect to the impedance coefficient. Such estimates are of importance to establish sharp error estimates for finite element discretizations of contact impedance and high-frequency…

Communications on Pure and Applied Analysis, 2020, ⟨10.3934/cpaa.2020107⟩. ⟨hal-01887269⟩

• Pré-publication, Document de travail

Nudging electricity consumption within firms. Feedbacks from a field experiment

Christophe Charlier, Gilles Guerassimoff, Ankinée Kirakozian, Sandrine Selosse

2019. ⟨hal-02421815⟩

• Communication dans un congrès

Synthesis of doped β tricalcium phosphate powders to improve their thermal stability and densification by conventional and microwave sintering

Nicolas Somers, Florian Jean, Marie Lasgorceix, Hugo Curto, Anthony Thuault, Fabrice Petit, Anne Leriche

BCERS 2019, Dec 2019, Gent, Belgique, Belgium. ⟨hal-04391972⟩

• Article dans une revue

Nanotechnology to improve the performances of hydrodynamic surfaces

Ali Ahmed Alshehri, Philippe Champagne, Laurent Keirsbulck, El Hadj Dogheche

ure continues to inspire scientists to adapt solutions in order to satisfy human needs, mainly in the maritime domain with metallic surface corrosion and its mechanical friction. In this research, the source of innovation comes from the lotus leaf and its well-known super-hydrophobicity. In this…

Coatings, 2019, 9 (12), pp.808. ⟨10.3390/coatings9120808⟩. ⟨hal-03133311⟩