Publicaciones

• Article dans une revue

Stability results of some first order viscous hyperbolic systems

Serge Nicaise

In this paper, we first introduce an abstract viscous hyperbolic problem for which we prove exponential decay under appropriated assumptions. We then give some illustrative examples, like the linearized viscous Saint-Venant system. In order to achieve the optimal decay rate, we also perform a...

ESAIM: Control, Optimisation and Calculus of Variations, 2019, 25, pp.33. ⟨10.1051/cocv/2018020⟩. ⟨hal-02952637⟩

• Pré-publication, Document de travail

Cohomologie feuilletée du flot affine de Reeb sur la variété de Hopf Sn×S1

Aziz El Kacimi Alaoui

We determine explicitly the foliated cohomology H∗F(M) of the affine Reeb flow F on the Hopf manifold Sn×S1. The vector space H1F(M) contains exactly the obstructions to solve the cohomological equation X⋅f=g where f and g are C∞-functions and X is any non singular vector field defining the...

2019. ⟨hal-03149488⟩

• Communication dans un congrès

Effect of CuBi<inf>2</inf>O<inf>4</inf> additive on dielectric, ferroelectric, and piezoelectric properties of BCTZ lead free ceramics sintered at low temperature

Naima Zidi, Ahcene Chaouchi, Mohamed Rguiti, Christian Courtois, Yannick Lorgouilloux

The influence of CuBi2O4 addition on sintering temperature, structural, dielectric and piezoelectric properties of (Ba, Ca)(Ti, Zr)O3 BCTZ ceramics prepared by the direct solid-state reaction were investigated. The X ray diffraction (XRD) data showed a single phase perovskite structure with...

• Article dans une revue

The Helmholtz decomposition in weighted L^p spaces in cones

Serge Nicaise

In this paper we prove the Helmholtz decomposition in conical domains of $R^3$ in weighted $L^p_\beta$ spaces under a spectral condition on $\beta, p$. The basic bricks are the transformation of the original problem into a problem set in cylindrical domains and the combination of a priori bounds...

Bulletin of the Belgian Mathematical Society - Simon Stevin, 2018, 25 (5), ⟨10.36045/bbms/1547780431⟩. ⟨hal-01541298⟩

• Article dans une revue

Femtosecond laser impact on calcium phosphate bioceramics assessed by micro-Raman spectroscopy and osteoblastic behaviour

Marie Lasgorceix, Liliana Grenho, Maria Helena Fernandes, Cédric Ott, Laurent Boilet, Anne Leriche, Fernando Monteiro, Francis Cambier, Stéphane Hocquet

The present work is an investigation of the biological response to the presence of grooves 3 μm deep, 15 μm wide and spaced by 100 μm, produced with femtosecond laser on β-tricalcium phosphate (β-TCP). The heat affected zone generated by the laser irradiation was investigated. Micro-Raman...

Journal of the European Ceramic Society, 2018, 38 (16), pp.5545-5553. ⟨10.1016/j.jeurceramsoc.2018.07.048⟩. ⟨hal-03080557⟩

• Thèse

Synthèse et caractérisation physico-chimique de nouveaux phosphates de magnésium : (A¹₂ ou B²)Mg₂M³(PO₄)₃ (A = Na, Ag ; B = Ca, Pb, Sr, Ba ; M = Fe, In), Synthesis and physicochemical characterization of new magnesium phosphates : (A¹₂ ou B²)Mg₂M³(PO₄)₃ (A = Na, Ag ; B = Ca, Pb, Sr, Ba ; M = Fe, In)

Ahmed Ould Saleck

Ce travail de thèse s’inscrit dans le cadre de la contribution au programme de valorisation des matériaux phosphatés et plus particulièrement, les phosphates de type alluaudite ou α-CrPO₄. Ces composés se distinguent par leurs propriétés physico-chimiques aussi variées qu’importantes et sont très..., This study is a part of contribution to the investigation program aiming to elaborate and to characterize new phosphate-based materials, particularly, with the alluaudite and/or α- CrPO₄ type structure. These compounds are characterized by their wide physico-chemical properties that they can...

Matière Condensée [cond-mat]. Université de Valenciennes et du Hainaut-Cambrésis; Université Mohammed V (Rabat), 2018. Français. ⟨NNT : 2018VALE0045⟩. ⟨tel-03366381⟩

• Communication dans un congrès

Elaboration de monolithes de silice mésoporeuse à porosités hiérarchisées à l’aide de porogènes polymériques

Rıdvan Yildiz, Yannick Lorgouilloux, Jérémy Dhainaut, Jean-Philippe Dacquin, Sébastien Royer, Christian Courtois

Matériaux 2018, Nov 2018, Strasbourg, France. ⟨hal-03515347⟩

• Communication dans un congrès

Élaboration de revêtements nano-structurés par chimie-douce et assistée par micro-ondes pour applications auto-nettoyantes et anti-bactériennes

Elodie Niemiec, Philippe Champagne, Arnaud Tricoteaux, Philippe Moreau, Anthony Thuault, Denis Lesueur, Christian Courtois

MATERIAUX 2018, Nov 2018, Strasbourg, France. ⟨hal-03439476⟩

• Pré-publication, Document de travail

The time-harmonic Maxwell equations with impedance boundary conditions in convex polyhedral domains

Serge Nicaise, Jérôme Tomezyk

In this paper, we first develop a variational formulation of the time-harmonic Maxwell equations with impedance boundary conditions in polyhedral domains similar to the one for domains with smooth boundary proposed in [12, §4.5.d]. It turns out that the variational space is embedded in H 1 as soon...

2018. ⟨hal-01647811v2⟩

• Article dans une revue

Crosslinking chemistry of poly(vinylmethyl-<i>co</i>-methyl)silazanes toward low-temperature formable preceramic polymers as precursors of functional aluminium-modified Si–C–N ceramics

Diane Fonblanc, David Lopez-Ferber, Mélanie Wynn, Abhijeet Lale, Anne Soleilhavoup, Anne Leriche, Yuji Iwamoto, Fabrice Rossignol, Christel Gervais, Samuel Bernard

Crosslinking chemistry of a liquid poly(vinylmethyl-co-methyl)silazane with an alane hydride-based complex according to Si : Al ratios varying from 5 to 2.5 has been investigated in detail through the characterization of the as-obtained polymers using solid-state NMR, FT-IR and elemental analyses....