There are a multitude of methods for producing magnetic nanoparticles with a given magnetic behavior (paramagnetic, ferromagnetic, etc.) and a given magnetic category (soft, semi-hard, hard). But for the same composition of precursors and a given process, there is still no simple and effective way to modulate the magnetic category. Based on coprecipitation of precursors and a hydrothermal and/or solvothermal synthesis, this innovative production process allows to easily choose the magnetic category (soft, semi-hard, hard) of the nanocomposites while using the same composition of precursors.
Nouvel échangeur de chaleur basé sur un matériau à faible coût, facile à installer et à entretenir. Il repose sur une structure polymère flexible et laissé libre dans un fluide externe en mouvement.
The invention presents a direct growth method of ZnO nanowires on civil engineering elements intended for photocatalysis for water and/or air depollution. Due to their high surface-to-volume ratio, ZnO nanowires showed excellent efficiency in the decomposition of tested dyes (AR14, MB, and MO) into less harmful products such as CO₂ , H₂O, NO³⁻, or SO₄²⁻ via a photocatalytic-induced mineralization process.
The civil engineering element coated with ZnO nanowires on its rough surface produced with this method can be integrated for instance in the development of the 5th-generation (5G) road, public garden, or in new buildings/houses. Smartly designed with new and possibly bio-based materials, 5th generation plans to make smarter roads in the near future will integrate numerous technologies including an environment depollution function. The photocatalysis process is a promising emerging solution for this aim, as it is a cheap and fast solution to degrade toxic organic compounds into harmless products. With the present invention, the photocatalysis process can be incorporated into our everyday life. Thus, incorporating metal oxide semiconductors (photocatalysts) onto civil engineering materials is a smart way to achieve this goal, as they are known to perform photocatalysis under ultraviolet lighting, or even under visible lighting with doped photocatalysts.
Ce logiciel détecte les éléments du graphique (barres, axes, ticks, labels, légendes, titres, tranches, symboles, bordures) à partir d’images, et rend le contenu interrogeable via un assistant vocal et/ou textuel. Il est compatible avec les lecteurs d’écran standards.
Electricity cost is one of the main expenses in water electrolysis, so improving conversion efficiency in electrolysers is crucial. Our innovative Anion Exchange Membrane (AEM) water electrolysis cathode catalyst rivals the efficiency of Carbon-Platinum (Pt/C) at a much lower cost. It combines nickel with a small amount of a Platinum Group Metal (PGM) through a unique one-step synthesis. In a three-electrode setup at 20°C and 0.1 mol/L KOH with a 10 mA/cm² current density, pure Ni stands at -280 mV overpotential, while our catalyst shows -110 mV, close to Pt/C 60%’s -105 mV, thus enhancing both affordability and performance in hydrogen production. At 1 mol/L KOH, our catalyst’s overpotential even drops to -65 mV, versus -50 mV for Pt/C 60%.
The development of bi-functional smart window, which combine reversible battery-type electrochemical energy storage and electrochromic properties, is an significant step forward to tackle the energetic footprint of buildings. These innovative aqueous based devices can reversibly switch from a transparent discharged state to a colored (even fully opaque) charged state. When integrated in “green” buildings, they efficently regulate light and heat transfer, thus
reducing the energy consumption and recycling stored energy. The selling point of our approach lies in leveraging Reversible Zinc Electrodeposition (RZE) on a transparent conductive oxide anode, with the possibility of combining various electrochromic materials at the cathode.
Les affections neurologiques du mouvement perturbent l’exécution des mouvements alternatifs qui sont la base de la plupart des gestes quotidiens. Parmi ces affections, la maladie de Parkinson affecte surtout les mouvements de grande amplitude (hypométrie). La réalisation de ces mouvements fait partie de l’examen clinique standard, cependant de façon non quantifiée compte tenu notamment de l’absence d’outil permettant de mesurer de manière simple et rapide les différents paramètres cinématiques de ces mouvements alternatifs rapides. On cherchera, en comparant un échantillon de sujets sains et un échantillon de sujets parkinsoniens modérés, les paramètres cinématiques du mouvement (amplitude, vitesse, accélération, fluidité) les plus discriminants par rapport au mouvement normal.
Biological treatments play a crucial role in removing organic and nitrogen compounds from wastewater with high cost-effectiveness. However, these technologies face limitations when dealing with industrial wasterwater containing biorecalcitrant organic compounds. This innovative anodic oxidation reactor tackles the issue by oxidizing the biorecalcitrant compounds, non selectively and transforming them into more biodegradable forms, to achieve a synergistic effect with a post-biological treatment. This combination of treatments aims at reaching high removal yields, for a wide range of industrial wastewaters with optimized energy consumption.
Des vésicules extracellulaires thérapeutiques, issues de cellules HEK293T exprimant le facteur de transcription NFAT3, sont utilisées dans le traitement avancé du cancer du sein triple négatif métastatique et du cancer du pancréas.
Although the standard ASTM D559 has been defined to evaluate the impact of water ingress and egress on a given soil, the current ASTM approach does not consider the soil saturation level, the temperature implemented does not represent the real situation, and the consideration of Relative Humidity (RH) and physicochemical interaction between soil and water is ignored. In this context, the proposed automated simulator brings a novel approach to monitoring the water ingression and egression phenomena continuously by considering the soil saturation level. The temperature and RH which impact such phenomena are incorporated to represent the field condition. The physicochemical interaction between each specimen and water can be analyzed simultaneously. Thus, the proposed device can evaluate the impact of the wetting and drying cycles on compacted soil in an environment that closely represents the field situation.
The development of efficient water filtration systems is an important challenge for environmental engineering. Activated carbon is widely used for the adsorption of organic pollutants, such as pesticides, pharmaceutical by-products and volatile organic compounds. However, it is only a separation step and the regeneration processes of the adsorption material currently present some important drawbacks. A new electrochemical process for in-situ regeneration of activated carbon has been developed. Both adsorption and regeneration steps are performed in the same reactor. The objective of electrochemical regeneration is to recover the adsorption capacity of the adsorption material and to degrade organic pollutants. The technology was initially developed using activated carbon fibers, a breakthrough material allowing faster adsorption of organic pollutants. The technology is also applied for the regeneration of conventional activated carbon grains.
Le transfert inconscient contraint par l'espace-temps est une tâche cryptographique qui étend la portée du transfert inconscient en garantissant la sécurité à travers la physique quantique et les contraintes de signalisation relativistes.
Current methods for monitoring the health status of power semiconductor components, in real time, in operating electronic equipment, are very complex and therefore expensive to implement. Thanks to the discovery of a new unique temperature-independent aging indicator it has now become very simple and economical to diagnose the state of health of these components. The result is a drastic reduction in the cost of maintenance that opens the way to new fields of application previously unthinkable.
Reducing the environmental footprint of building materials is a major challenge in the construction industry. This innovative process makes it possible to reinforce a wide range of excavated soils by making them suitable for raw earth construction. Compressed earth blocks possessing enhanced mechanical properties and water resistance are fabricated with addition of biopolymers. These clay materials, 100% geo-based and bio-based, are an ideal solution for building the city of tomorrow.
About 25% of primary human breast cancers are due to the deregulated expression of ErbB2/HER2. HER2-targeted therapies have improved patient survival, but both de novo and acquired resistance remain a challenge, as only 25% of treated patients respond to the current therapies. Equivocal HER2 status also remains an issue as it affects subsequent clinical management. Following the analysis of the expression level of more than 800 miRNA in several human breast cancer cells and patient biopsies with various HER2+ status, the team has identified novel miRNA biomarkers for the diagnosis and prognosis of HER2+ cancers. This allows for further stratification of patients and offers new therapeutic strategies based on the modulation of some of these miRNA. The team has the expertise and know-how required to measure miRNA and HER2 expression levels in biological samples as well as to assess HER2 activation status, downstream signaling and functional effects on cell proliferation and survival in breast cancer.
Traitement utilisant l'anti-miARN pour traiter les cancers du sein HER2+ permet de mieux cibler les patients et d'offrir un traitement personnalisé en modulant miR-200b ou miR-429.
Nanomedicine and biotherapeutics are progressively replacing traditional small drug therapeutics. Lipidic nanoparticles for covid vaccines is one of the most recent and succesful example. The field success is strongly related to analytical techniques such as SEC chromatography and size analysis. AF4 flow separation is an attractive alternative to SEC to separate a wider range of nanoparticles. Yet, the experimental complexity and resources it requires limit its current capacities. Thanks to our expertise in thermoplastic, we can miniaturize it, intensifying its performances and overcoming its current limitations.
Utilisation de molécules libérant du monoxyde de carbone (CO-RMS) comme nouvelle approche thérapeutique pour traiter les problèmes métaboliques associés au vieillissement.
Les revêtements autonettoyants ou réflectifs (textiles, peintures, verres, bétons…) à base de TiO2 sont déjà connus mais le problème majeur reste la taille nanométrique des particules d’oxyde de titane jugée dangereuse pour les êtres vivants. Dans les procédés existants, ces nanocristaux d’oxyde de titane, une fois synthétisés ou achetés, sont importés à l’intérieur ou sur la surface des revêtements. Le risque de dissémination dans l’environnement est donc réel puisque ces particules peuvent se décrocher aisément, de par le lien très faible entre revêtement et matériaux. Notre innovation permet quant à elle d’éviter cette problématique en rendant le lien entre support et TiO2 très fort en développant directement les cristaux à l’intérieur ou sur la surface d’un support sans risque de se décrocher et se disséminer dans l’environnement.
Red blood cell (RBC) allo-immunization is the immune response of an individual to foreign RBC antigens not present on the surface of their own cells. An efficient detection of alloantibodies is of major interest to manage transfusions in regularly transfused patients, or for the pregnancy follow-up in the context of haemolytic disease of the foetus and new-born (HDFN). However, The Rh blood group system is one of the most polymorphic and immunogenic system, defined by least 54 Rh antigens, some of which being very rare in the population. To date, available commercial test cell reagents, composed of red cell panels expressing different Rh phenotypes, are able to encompass only few of these Rh specificities. Researchers have developed a cell-free system for the production of RH proteins, allowing to obtain large quantities of these proteins in their native state. The method, validated on RhD and RhD-RhAG antigens, relies on the use of in-house assembled nanodiscs, able to incorporate membrane proteins, preserving not only the solubility but also the conformation of newly synthetized membrane proteins. This is to date the first method allowing to generate in vitro Rh antigens with a correct conformation and, thus, ready to be tested by several antibodies, thereby representing a new approach for diagnostic in hematology laboratories investigations.
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