Inkjet coplanar square monopole on flexible substrate for 60-GHz applications
In this letter, the design, fabrication, and measurement of a 60-GHz printed antenna with inkjet technology over a flexible substrate is presented. The antenna is a coplanar square monopole with omnidirectional radiation characteristics. We especially measured a 68% total efficiency and a maximum realized gain of 1.8 dBi. This study demonstrates the inkjet technology being a competitive solution for efficient radiating elements at millimeter- wave frequencies.
(IEEE Antennas and Wireless Propagation Letters. vol. 13, n° 1536-1225, pp. 435-438, 27/10/2026)
EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, ST-CROLLES, IEMN, UVHC, CNRS, UPHF, LEAT-CNRS-UMR7248, UNS, CNRS, UniCA, IUF, M.E.N.E.S.R.
A 1D stabilized finite element model for non-hydrostatic wave breaking and run-up
(. vol. 77, 27/10/2026)
BACCHUS, Inria, UB, CNRS, IMB, UB, Bordeaux INP, CNRS, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS
Réduction des micropolluants par les traitements complémentaires : fossé construit sur sol imperméable, filtres garnis de matériaux adsorbants (ARMISTIQ – Action B)
Le projet ARMISTIQ (« Amélioration de la réduction des micropolluants dans les stations de traitement des eaux usées domestiques ») a pour objectif d’évaluer et d’améliorer la connaissance et la maîtrise de technologies de traitements secondaire et complémentaire des substances prioritaires et émergentes présentes dans les eaux usées et les boues urbaines. L’action B porte sur deux procédés complémentaires susceptibles d’éliminer des micropolluants contenus dans les rejets de stations de traitement des eaux usées des communes rurales. Il s’agissait d’une part, d’étudier les rendements d’élimination de micropolluants par un fossé de 80 mètres de long construit sur sol imperméable (installation grandeur réelle), et d’autre part, d’étudier les rendements d’élimination de micropolluants par trois matériaux rapportés, adsorbants en grain (charbon actif, zéolite ou argile expansée), étudiés à l’échelle du laboratoire et à l’échelle de pilotes semi-industriels. Des protocoles d’analyses chimiques, fiables et robustes, ont été appliqués pour déterminer les concentrations de 16 métaux, 19 médicaments, 19 hydrocarbures aromatiques polycycliques (HAP), 6 alkylphénols (AKP) et 6 pesticides, choisis en raison de leurs différentes propriétés physicochimiques et leur persistance aux traitements secondaires. Le fossé de 80 mètres de long construit sur sol imperméable a montré une efficacité très limitée vis-à-vis de la réduction des micropolluants étudiés (rendements inférieurs à 30% pour les micropolluants réfractaires au traitement secondaire). Néanmoins, des rendements d’élimination compris entre 30 et 70% ont été mesurés pour quelques substances qui s’expliquent soit par adsorption sur l’argile du sol pour quelques métaux (cobalt, zinc, cadmium) soit par photodégradation pour quelques micropolluants organiques (paracétamol, ibuprofène). Des rendements d’élimination proches de 100% pendant plus de 330 jours ont été mesurés pour le filtre à charbon actif fonctionnant avec un temps de séjour hydraulique (HRT) de 1,5 heure. Seul le nonylphénol et quelques métaux ont eu des rendements moindres (50 à 80%). Un kilogramme de charbon actif a adsorbé les micropolluants contenus dans au moins 8 m3 d’eau usée traitée. Des rendements d’élimination supérieurs à 70% pour la moitié des substances pharmaceutiques et phytosanitaires étudiées ont été mesurés pour les filtres garnis de matériaux adsorbants en grain (argile expansée ou zéolite), alternatifs au charbon actif, avec un HRT de 24 heures. Les rendements d’élimination obtenus pour les autres substances sont bien moindres qu’avec le charbon actif, mais restent supérieurs à ceux mesurés avec des filtres à graviers ou à apatite. Un kilogramme d’argile ou de zéolite a adsorbé les micropolluants contenus dans environ 0,3 m3 d’eau usée traitée, et les filtres ont saturé au bout de quelques mois. Avec un HRT plus court (4 heures), la saturation est intervenue au bout d’une vingtaine de jours seulement. Les perspectives de ce travail concernent l’évaluation d’autres procédés complémentaires, comprenant une succession de bassins de faibles profondeurs d’eau libre, ainsi que des procédés construits sur sol perméable.
(pp. 64, 27/10/2026)
UR MALY, IRSTEA, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS
Bioaccumulation of perfluoroalkyl compounds in midge (Chironomus riparius) larvae exposed to sediment
Midge larvae (Chironomus riparius) were exposed to sediments from a deposition sampled at a site along the Rhône River (France) downstream of an industrial site releasing various perfluorinated chemicals. This sediment is characterized by high concentrations of perfluoroundecanoic acid (PFUnA) and perfluorotridecanoic acid (PFTrDA) and a low perfluorooctane sulfonate (PFOS) concentration. Concentrations of 23 perfluoroalkyl compounds, including C4eC14 carboxylate acids, C4eC10 sulfonates, and seven precursors, were analyzed in overlying and pore water, sediment, and larvae. Midge larvae accumulated carboxylate acids (C11eC14), PFOS, and two precursors (perfluorooctane sulfonamide: FOSA and 6:2 fluorotelomer sulfonic acid, 6:2 FTSA). These substances accumulated mainly during the fourth instar larvae exponential growth phase. Accumulation of 6:2 FTSA, PFUnA, and PFOS occured via trophic and tegumentary routes. Other compounds mainly accumulated from food. Kinetics followed a partition model, from which uptake and elimination constants were derived.
(Environmental Pollution. vol. 189, n° 0269-7491, pp. p. 27 - p. 34, 27/10/2026)
UR MALY, IRSTEA, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, ECCC
Fluid Seepage in Relation to Seabed Deformation on the Central Nile Deep-Sea Fan, Part 1: Evidence from Sidescan Sonar Data,
The central Nile Deep-Sea Fan contains a broad area of seabed destabilisation in association with fluid seepage: slope-parallel sediment undulations are associated with multibeam high-backscatter patches (HBPs) related to authigenic carbonates. During the 2011 APINIL campaign, a deep-towed sidescan and profiling system (SAR) was used to acquire high-resolution data along three transects across water depths of 1,700-2,650 m. Three seabed domains are distinguished, all developed within stratified sediments overlying mass-transport deposits (MTDs). Upslope of the undulations (<1,950 m), sidescan HBPs record focused fluid seepage via seabed cracks. In the western area of undulations, sidescan HBPs are distinct from intermediate-backscatter patches (IBPs) that extend up to 850 m parallel to the undulations, mainly along their downslope flanks; some contain sub-circular HBPs up to 300 m wide, three associated with smaller (<10 m) hydroacoustic gas flares. Focused fluid seeps are inferred to have shifted over time to form elongate carbonate pavements, preferentially along the footwalls of faults beneath the undulations that provide pathways for fluid flow. In contrast, in the eastern area of undulations, sidescan imagery reveal only slope-transverse furrows formed by turbulent flows, interpreted to indicate that fossil carbonates sampled during submersible operations have been exhumed by erosion.
(Advances in Natural and Technological Hazards Research. vol. 37, pp. 129-139, 27/10/2026)
GEOAZUR 7329, INSU - CNRS, UniCA, CNRS, IRD [Occitanie], IRD, UniCA, OGS, IFREMER, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS
Single and mixture effects of pesticides and a degradation product on fluvial biofilms
The Morcille River located in the Beaujolais vineyard area (Eastern France) is subjected to strong vine-growing pressure leading to the contamination by a range of herbicides and fungicides of the surrounding freshwater environment. Particularly high concentrations of norflurazon, desmethyl norflurazon and tebuconazole were recorded in spring 2010 at the downstream site of the river. Despite their occurrence in rivers, scarce toxicity data are available for these products, in particular in the case of desmethyl norflurazon (main norflurazon degradation product). Furthermore, the toxicity data are generally available only for single compounds and are issued from single species toxicity tests, leading to a lack of ecological relevance. Consequently, this study was undertaken to evaluate the toxic effects of norflurazon, desmethyl norflurazon and tebuconazole singly and in a ternary mixture on fluvial biofilm. Toxicity tests were performed in microplates for 48 h. Photosynthetic endpointsweremeasured using pulse amplitude-modulated fluorometry; diatom densities and taxonomic composition were determined. After 48 h of exposure, significant effects on optimal quantumyield (Fv/Fm) for desmethyl norflurazon and mixturewere observed.
(Environmental Monitoring and Assessment. vol. 186, n° 0167-6369, pp. 3931-3939, 27/10/2026)
UR EABX, IRSTEA, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS
Morphodynamic characterisation of the human-impacted Bight of Benin sand barrier coast, West Africa
(Journal of Coastal Research. vol. SI 70, n° 0749-0208, pp. 079-083, 27/10/2026)
CEREGE, IRD, INRA, AMU, CdF (institution), INSU - CNRS, CNRS, ECOLA, LEGOS, IRD, UT3, Comue de Toulouse, INSU - CNRS, CNES, CNRS, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, OLVAC, LEGOS, IRD, UT3, Comue de Toulouse, INSU - CNRS, CNES, CNRS
Beach cusp dynamics on a reflective beach
Beach cusps are common feature of steep reflective and intermediate beaches. However very few observations reported double coupled cusp systems. Here we present a data set of observations of a beach exhibiting two sets of beach cusps. Data were collected at Grand Popo Beach (Benin, West Africa) in February 2013. Daily topographic survey along a 380m long stretch of shore allowed observing the dynamic of the two set of beach cusps. At the beginning of the field survey, we clearly observe two sets of cusps : the upper beach cusps system is relatively asymetric with a typical wavelength of about 45 m while the lower beach cusps system is relatively symmetric with a typical wave length slightly shorter (about 35 m). After two days, we measured the total destruction of the lower set of beach cusps while the upper set of beach cusps was only partially des tructed. Data suggest that destruction of the lowerbeach cusp system may be related to persistent accretions conditions and/or calm conditions but probably also to the transition from wave- driven circulation dominated by weak alongshore currents with flash and swash rips, to a second period characterized by dominant longshore current further increasing in speed, and rare swash rips. On the other hand the disappearance of the western upper beach cusp might be related to an accretion pattern and to the merging of two individual features. Our observations, consistent with previous works, suggest that beach cusps certainly arise as a result of some combination of erosion and accretion.
(Journal of Coastal Research. vol. SI 70, n° 0749-0208, pp. 669-674, 27/10/2026)
EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, ECOLA, LEGOS, IRD, UT3, Comue de Toulouse, INSU - CNRS, CNES, CNRS, LEGOS, IRD, UT3, Comue de Toulouse, INSU - CNRS, CNES, CNRS, UAC
Video Monitoring and Field Measurements of a Rapidly Evolving Coastal System: the River Mouth and Sand Spit of the Mataquito River in Chile
The understanding of morphological processes controlling the evolution of sand spit reformation after a tsunami impact is a challenging and interesting topic, especially in highly energetic and micro tidal environments. A field campaign performed during December 2012 at the Mataquito River mouth in Chile, allowed us to simultaneously monitor topo-bathymetry evolution, wave climate, tidal range, swash zone dynamics and upper beach face evolution over a portion of its sand spit. A video system was set up for a continuous and long-term monitoring of the evolution of the river mouth and sand spit. Primarily, in this work we focus on the application of a video-derived shoreline detection method to assess shoreline evolution and beach cusps migration at hourly scales. We test the method performance on short-term episodic migration of beach cusps recorded during the campaign. Beach face variations at a daily scale were observed, which can be attributed to the migration of beach cusps in the alongshore direction, and linked to wave forcing and alongshore sediment transport.
(Journal of Coastal Research. vol. SI 70, n° 0749-0208, pp. 639-644, 27/10/2026)
EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, ECOLA, LEGOS, IRD, UT3, Comue de Toulouse, INSU - CNRS, CNES, CNRS
Removal Of Non-Conventional Contaminants From Wastewaters
Removal Of Non-Conventional Contaminants From Wastewaters
(pp. 20, 27/10/2026)
UR MALY, IRSTEA, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS