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Affichage de 341 à 350 sur 1038

Article dans une revue

Existence and multiplicity for an elliptic problem with critical growth in the gradient and sign-changing coefficients

Colette De Coster, Antonio J. Fernández Sánchez

Let Ω ⊂ RN, N≥ 2 , be a smooth bounded domain. We consider the boundary value problem [Figure not available: see fulltext.]where cλ and h belong to Lq(Ω) for some q> N/ 2 , μ belongs to R\ { 0 } and we write cλ under the form cλ: = λc+- c- with c+≩ 0 , c-≥ 0 , c+c-≡ 0 and λ∈ R. Here cλ and h are...

Calculus of Variations and Partial Differential Equations, 2020, 59 (3), ⟨10.1007/s00526-020-01755-z⟩. ⟨hal-03337292⟩

Article dans une revue

Development of Ultrasonic Surface Acoustic Wave Humidity Sensors, Développement de Capteurs d’Humidité Ultrasonores à ondes Acoustiques de Surface

Saliou Ndao, Marc Duquennoy, Christian Courtois, Mohammadi Ouaftouh, Mohamed Rguiti, Nikolay Smagin, Frédéric Rivart, Maurice Gonon, Grégory Martic, Christine Pelegris, Frédéric Jenot

In a European project called CUBISM, humidity sensors based on IDT (Inter Digital Transducer) technology are developed for the generation and detection of surface acoustic waves (SAW). These sensors are designed to operate at high temperature (500°C) for monitoring the drying of refractory concrete..., Dans le cadre d’un projet européen nommé CUBISM, des capteurs d’humidité basés sur la technologie IDT (Inter Digital Transducer) pour la génération et la détection des ondes acoustiques de surface ou SAW (Surface Acoustic Wave) sont développés. Ces capteurs sont destinés à fonctionner à haute...

Instrumentation, Mesure, Métrologie, 2020, 19 (3), pp.205-210. ⟨10.18280/i2m.190305⟩. ⟨hal-03480302⟩

Article dans une revue

3D printed bioceramic for phage therapy against bone nosocomial infections

Franck Bouchart, Olivier Vidal, Jean-Marie Lacroix, Corentin Spriet, Shaan Chamary, Annie Brutel, Jean-Christophe Hornez

This study provides a new therapeutic response to postoperative joint and bone infections. Alone or in combination with antibiotics, phage therapy has many advantages, including accurate targeting of pathogenic bacteria. In addition, a decrease in harmful side effects can improve the healing...

Materials Science and Engineering: C, 2020, 111, 13 p. ⟨10.1016/j.msec.2020.110840⟩. ⟨hal-04279673⟩

Article dans une revue

Phase transformations and microstructural evolution in nanocrystalline Fe 71 B 23 Nb 6 alloy prepared by mechanical alloying

Mahmoud Chemingui, Chahida Mnasri, Christelle Nivot, Arnaud Tricoteaux, Yannick Lorgouilloux, Mohamed Dammak

Abstract A new nanocrystalline Fe 71 B 23 Nb 6 alloy powder was prepared by mechanical alloying. The phase transformation and morphological and microstructural properties of the as-prepared alloy were investigated by scanning electron microscopy, laser granulometry, and X-ray diffraction with...

International Journal of Materials Research, 2020, 111 (4), pp.307-315. ⟨10.1515/ijmr-2020-1110406⟩. ⟨hal-04279070⟩

Article dans une revue

Low voltage plasma jet with piezoelectric generator : preliminary evaluation of decontamination capabilities

Jordan Stekke, Claire Tendero, Pascal Tierce, Christian Courtois, Gaetan Rauwel, Juslan Lo, Philippe Guillot, François Pigache

This paper deals with the proof of concept and the preliminary evaluation of decontamination performances obtained with a plasma jet generated by a piezoelectric transformer. This low voltage supply solution (<10V) is investigated as a plasma jet device, compact and safe solution for the...

IEEE Transactions on Plasma Science, 2020, 48 (5), pp.1264-1270. ⟨10.1109/TPS.2020.2985406⟩. ⟨hal-02640823v2⟩

Article dans une revue

Influence of microwave sintering on electrical properties of BCTZ lead free piezoelectric ceramics

Kelly Orlik, Yannick Lorgouilloux, Pascal Marchet, Anthony Thuault, Mohamed Rguiti, Christian Courtois, Florian Jean

Barium titanate doped with calcium and zirconium (BCTZ) could be used at low temperature to replace lead based piezoelectric ceramics (PZT). The classical way to obtain BCTZ is the solid-state route coupled with conventional sintering, but this step is time-consuming. To reduce the duration of this...

Journal of the European Ceramic Society, 2020, 40 (4), pp.1212-1216. ⟨10.1016/j.jeurceramsoc.2019.12.010⟩. ⟨hal-02550924⟩

Article dans une revue

Ultra-fast laser surface texturing of β-tricalcium phosphate (β-TCP) ceramics for bone-tissue engineering applications

Albena Daskalova, Marie Lasgorceix, Irina Bliznakova, Liliya Angelova, Stéphane Hocquet, Anne Leriche, Anton Trifonov, Ivan Buchvarov

Abstract β-tricalcium phosphate (β-TCP) has provoked particular attention as graft for bone regeneration applications due to its excellent biocompatibility and biodegradability. In this work, we investigated the interaction of femtosecond laser radiation with β-TCP pellets by varying the output...

Journal of Physics: Conference Series, 2020, 1492 (1), 5 p. ⟨10.1088/1742-6596/1492/1/012059⟩. ⟨hal-03480357⟩

Chapitre d'ouvrage

Collision Times of Random Walks and Applications to the Brownian Web

David Coupier, Kumarjit Saha, Anish Sarkar, Viet Chi Tran

Convergence of directed forests, spanning on random subsets of lattices or on point processes, towards the Brownian web has made the subject of an abundant literature, a large part of which relies on a criterion proposed by Fontes, Isopi, Newman and Ravishankar (2004). One of their convergence...

Genealogies of Interacting Particle Systems, 38, WORLD SCIENTIFIC, pp.267-293, 2020, Lecture Notes Series, Institute for Mathematical Sciences, National University of Singapore, ⟨10.1142/9789811206092_0007⟩. ⟨hal-04288603⟩

Article dans une revue

Characterization and extensive study of cubic and quintic algebraic trigonometric planar PH curves, Caractérisation et étude approfondie des courbes planes algébriques-trigonométriques à hodographe pythagorien

Isabelle Cattiaux-Huillard, Laura Saini

This paper deals with Pythagorean hodograph curves of the spaces of algebraic trigonometric functions and trigonometric polynomials, span {1, t, {cos (kt) , sin (kt)}k=1^m and span {1, {cos (kt) , sin (kt)}k=1^m , respectively. First, we propose a general characterization of planar PH curves in...

Advances in Computational Mathematics, 2020, 46, ⟨10.1007/s10444-020-09772-4⟩. ⟨hal-04291439⟩

Article dans une revue

Sintering of BaTiO3 powder/sol composite thick films and their dielectric and piezoelectric properties

Jean-François Trelcat, Natanaël Basile, Maurice Gonon, Mohamed Rguiti, Christian Courtois, Anne Leriche

In this work, barium titanate thick films are produced at low-temperature using a modified sol–gel/ceramic powder technology named the composite route. In this process, a commercial BaTiO3 powder, doped or not by Li2O as sintering aid, is mixed with a stabilized titanium (IV) isopropoxide/barium...

Journal of Sol-Gel Science and Technology, 2020, 93 (3), pp.657-665. ⟨10.1007/s10971-019-05123-y⟩. ⟨hal-03479310⟩