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Affichage de 2661 à 2670 sur 16109

Article dans une revue

Synthesis of Cyano-Benzylidene Xanthene Synthons Using a Diprotic Brønsted Acid Catalyst, and Their Application as Efficient Inhibitors of Aluminum Corrosion in Alkaline Solutions

Mohammed Amin, Gaber Mersal, Morad El-Hendawy, Abdallah Shaltout, Ali Badawi, Johan Boman, Adil Gobouri, Murat Saracoglu, Fatma Kandemirli, Rabah Boukherroub, Jacek Ryl, Mohamed Khalifa

Novel cyano-benzylidene xanthene derivatives were synthesized using one-pot and condensation reactions. A diprotic Brønsted acid (i.e., oxalic acid) was used as an effective catalyst for the promotion of the synthesis process of the new starting xanthene–aldehyde compound. Different xanthene…

Molecules, 2022, Chemistry of Corrosion Inhibitors, 27 (17), pp.5733. ⟨10.3390/molecules27175733⟩. ⟨hal-03778946⟩

Article dans une revue

State of the Art of Chemosensors in a Biomedical Context

Erich Kny, Ciril Reiner-Rozman, Jakub Dostalek, Achim-Walter Hassel, Christa Nöhammer, Florian Pfaffeneder-Mantai, Sabine Szunerits, Viktoria Weber, Wolfgang Knoll, Christoph Kleber

Healthcare is undergoing large transformations, and it is imperative to leverage new technologies to support the advent of personalized medicine and disease prevention. It is now well accepted that the levels of certain biological molecules found in blood and other bodily fluids, as well as in…

Chemosensors, 2022, 10 (6), pp.199. ⟨10.3390/chemosensors10060199⟩. ⟨hal-03681612⟩

Article dans une revue

Thermodynamics of Extra-Toughness and Hidden-Length in Polymeric Materials with Sacrificial Bonds

Romain Jorge Do Marco, Stefano Giordano

Sacrificial bonds have been observed in several biological materials and structures and can increase their toughness, i.e., their resistance to fracture. They provide a reversible mechanism for dissipating mechanical energy before the possible system rupture. From a structural point of view,…

Applied Mechanics, 2022, 3 (3), pp.935-955. ⟨10.3390/applmech3030053⟩. ⟨hal-03776029⟩

Article dans une revue

Ultrasonic investigation of the effect of compressive strains on 3D periodic bi-material structures

Lynda Chehami, Jingfei Liu, Pascal Pomarède, Paul Lohmuller, Boris Pittrowski, Fodil Meraghni, Nico Declercq

Due to the specific elastic properties such as high stiffness to mass ratio, regular microstructure materials are widely used in the industry. The need for nondestructive evaluation is ubiquitous to ensure material quality. As an effective nondestructive testing method, ultrasound has great…

Acta Acustica, 2022, 6, pp.26. ⟨10.1051/aacus/2022023⟩. ⟨hal-03748457⟩

Article dans une revue

Investigation of the Eigen Frequency of a Cantilever Microbeam Immersed in a Fluid Under the Piezoelectric Effect

Victory Elias, Flavie Braud, Philippe Champagne, Georges Nassar

In this paper, a new model of piezoelectric cantilever is developed, it can be heavily used in a micro electromechanical system (MEMS). This new prototype eliminates several risks caused by the previous means already used and increases the sensation in terms of rheology. Our approach is based on…

Sensors & Transducers., 2021, 254 (7), pp.31-37. ⟨hal-03564209⟩

Article dans une revue

Dendritic Organic Electrochemical Transistors Grown by Electropolymerization for 3D Neuromorphic Engineering

K. Janzakova, M. Ghazal, A. Kumar, Yannick Coffinier, Sébastien Pecqueur, F. Alibart

One of the major limitations of standard top-down technologies used in today's neuromorphic engineering is their inability to map the 3D nature of biological brains. Here, it is shown how bipolar electropolymerization can be used to engineer 3D networks of PEDOT:PSS dendritic fibers. By…

Advanced Science, 2021, 8 (24), pp.2102973. ⟨10.1002/advs.202102973⟩. ⟨hal-03542157⟩

Communication dans un congrès

Performance Projection of GaN HEMT: Bias and Temperature Dependent Study of 3 rd -Order Intermodulation Distortion

Mohammad Alim, I. Jahan, Mayahsa Ali, Christophe Gaquière

The third-order intermodulation distortion in AlGaN/GaN high electron mobility transistors fabricated on SiC substrate for power amplifier applications is reported in this study as a function of bias and temperature. The nonlinearity of active devices in terms of frequency and input power was…

2021 3rd International Conference on Sustainable Technologies for Industry 4.0 (STI), Dec 2021, Dhaka, Bangladesh. pp.1-4, ⟨10.1109/STI53101.2021.9732585⟩. ⟨hal-03663718⟩

Pré-publication, Document de travail

Condensation and Growth of Amorphous Aluminosilicate Nanoparticles by Aggregation Process

Romain Dupuis, Seung Ho Hahn, Adri C. T. van Duin, Roland Pellenq, Arnaud Poulesquen

The precipitation of zeolite nanoparticles involves the initial formation of metastable precursors such as amorphous entities that crystalize through non-classical pathways. Here, using reactive force field based simulations, we reveal how aluminosilicate oligomers grow concomitantly to the…

2021. ⟨hal-03484661⟩

Rapport

Imputabilité à la présence d’un champ d’éoliennes de troubles rapportés dans deux élevages bovins

Yves Millemann, Cyrille Balland, Fabrice Giraudet, Lionel Grisot, Jean-François Labbé, James Roudet, Stéphane Tirlemont, Damien Voyer, Gilles Meyer, Catherine Belloc, Stéphane Bertagnoli, Alain Boissy, Henri-Jean Boulouis, Eric Collin, Jean-Claude Desfontis, Maria-Eleni Filippitzi, David Fretin, Emmanuelle Gilot-Fromont, Etienne Giraud, Nadia Haddad, Viviane Henaux, Elsa Jourdain, Sophie Le Bouquin Le Neveu, Sophie Le Poder, Elodie Monchatre-Leroy, Monique L’hostis, François Meurens, Pierre Mormede, Hervé Morvan, Carine Paraud, Ariane Payne, Carole Peroz, Claire Ponsart, Claude Saegerman, Gaëlle Simon, Jean-Pierre Vaillancourt, Anne Pereira de Vasconcelos, Thomas Claudepierre, Brigitte Debuire, Jean-François Doré, Thierry Douki, Jack Falcón, Emmanuel Flahaut, François Gaudaire, Irina Guseva-Canu, Martine Hours, Chaker Larabi, Joël Lelong, Frédérique Moati, Catherine Mouneyrac, Fabien Ndagijimana, Anne-Lise Paradis, Marie-Pierre Rols, Valérie Simonneaux, Alain Soyez, Esko Toppila, Alicia Torriglia, Françoise Viénot, Catherine Yardin, Valentina Andreeva, Serge Boarini, Anne Bourdieu, Jean-Marie Burkhardt, Philippe Chaumet-Riffaud, Pierre Degauque, Didier Dulon, Guillaume Dutilleux, Nicolas Feltin, Luc Fontana, Pierre-Marie Girard, Pascal Guenel, Thierry Letertre, Jean-Luc Morel, Catherine Collignon, Florence Étoré, Anthony Cadene

Selon la saisine, des troubles dans deux élevages bovins ont été rapportés comme concomitants à la construction en 2012 du parc éolien des Quatre Seigneurs, constitué de huit éoliennes situées sur quatre communes de Loire-Atlantique, à respectivement 800 et 1 300 mètres des deux élevages bovins…

[0] Saisine n° 2019-SA-0096, Anses. 2021, 219 p. ⟨anses-03792942⟩

Thèse

Functional metasurfaces controlled by Liquid crystals, Métasurfaces fonctionelles contrôlées par cristaux liquides

Racha Chamseddine

The main goal of this thesis was to dynamically control the reflectivity of a metasurface using LC technologies. The metasurfaces, tunable by voltage-controlled LC orientation, operate in a reflect-array mode and exhibit a high contrast ratio between quasi total absorption and low reflection,…, Le but principal de cette thèse a été de contrôler dynamiquement la réflectivité d’une métasurface par cristaux liquides. Les métasurfaces, dont les propriétés électromagnétiques sont contrôlées électriquement par l’orientation des molécules LC, fonctionnent en réflexion et présentent un très fort…

Micro and nanotechnologies/Microelectronics. Université de Lille, 2021. English. ⟨NNT : 2021LILUN030⟩. ⟨tel-03766339⟩