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Un partenariat, une collaboration, une prestation ou des renseignements ?

Tendances du mois


Un aperçu de la recherche en Normandie

  • How often do cataclysms shout in chorus? In a sweeping hunt across LIGO/Virgo/IceCube data, J.G. Rollins and the team at Laboratoire de physique corpusculaire de Caen LPCC chased cosmic events that would sing both in gravitational waves and in high‑energy neutrinos. They found no joint "duets" this time—but set the sharpest limits yet on how loudly such sources could hum in neutrinos, even down to sub‑threshold signals, trimming theories that required stupendous neutrino energies (10^52–10^54 erg).
  • The gravitational‑wave background—think of it as the Universe’s permanent static—also got a fresh reality check. The LPCC group within the LIGO‑Virgo‑KAGRA collaboration pushed the upper limit on an isotropic background to about 2.0×10⁻⁹ at 25 Hz for merger‑like spectra, tightening the net around the expected sea of faraway binary black holes and neutron stars.
  • Where on the sky should we look next? With a directional radiometer, J.R. Gair and colleagues at LPCC built all‑sky maps for both narrowband and broadband persistent signals. No smoking gun appeared, but the work sets the most stringent strain limits yet for point sources, extended regions and even spherical‑harmonic decompositions—turning the sky into a laboratory for long‑lived gravitational murmurs.
  • And what about lone neutron stars in hidden binaries? F. Garufi and the LPCC team combed O4a data for continuous waves from unknown, slowly wobbling stars in 7–15‑day orbits at 100–350 Hz. While none surfaced, the search carved out unprecedented constraints on such systems—vital waypoints as detectors grow more sensitive and the catalog of spinning beacons inevitably expands.

  • Precision oncology starts with better tests. In newly diagnosed ovarian cancer, Dominique Vaur and colleagues at Cancer and Brain Genomics (CBG) & GPMCND, IRIB validated GIScar, an academic homologous recombination deficiency (HRD) test that matched MyChoice while delivering fewer inconclusive results. Critically, GIScar predicted who benefits from olaparib maintenance—an actionable compass for treatment planning.
  • From organoids to operating rooms: Florence Giffard and the CBG & GPMCND, IRIB & ANTICIPE team automated scoring of RAD51 foci in patient‑derived tumor organoids—a functional readout of DNA repair capacity. Their imaging‑pipeline brings standardization to HRD phenotyping, helping clinicians match the right PARP inhibitor to the right tumor—fast.
  • When X‑rays aren’t enough, bring the carbon ions. Jean‑Louis Lefaix and partners at CIMAP & IRMA engineered 3D human chondrosarcoma models that preserve realistic micro‑environments and then bombarded them with heavy ions. Compared with X‑rays, carbon‑ion hits left DNA damage signals glowing for days—evidence of potent, enduring biological impact that explains the clinical promise of hadrontherapy.
  • Could hard‑to‑treat tumors be coaxed into radiosensitivity? François Chevalier and colleagues at CIMAP & IRMA showed PARP inhibitors can radio‑sensitize chondrosarcoma cells—even against high‑LET beams. Clonogenic survival plunged and cell‑death programs surged, pointing to a double‑edged strategy: break the DNA cleanly with ions, then block the repair crews.

  • Predictions aren’t just numbers; they’re shapes. Felipe Angelim at LITIS UR introduced Partition Trees, a non‑parametric way to learn full conditional probability densities over mixed (continuous + categorical) outcomes—so models can say not just “what,” but “how likely and in what form,” making probabilistic trees far more insightful for science and industry.
  • Testing causal AI used to be a shot in the dark. Alessandro Leite and a multi‑lab team at LITIS launched CausalProfiler, the first transparent benchmark generator with coverage guarantees across observation, intervention and counterfactual queries. It lets us fairly compare causal learners under varied, realistic conditions—in science’s favorite lighting: bright and reproducible.
  • From Asia ’97 to Covid ’20—can a neural net spot the next currency crunch? Virginie Gautier and colleagues at CREM trained convolutional neural networks on macro‑financial time series for 60 countries and detected 24 of 27 crises, outpacing LSTMs and classic models. CNNs, it turns out, aren’t just good with pixels—they’re sharp with patterns that precede economic storms.
  • Roads are open worlds. Corentin Bunel and the LITIS team tackled open‑set object detection for autonomous driving, where unknown classes routinely appear. Their work pairs new protocols with detectors that flag unfamiliar objects instead of guessing—an honesty upgrade that could make autonomy both safer and easier to trust.

  • Treelines aren’t just moving up; they’re reshaping. In the French Pyrenees, Matthieu Vignal and partners at IDEES & IRIHS mapped 626 treeline ecotones and showed that elevation shifts, pattern changes and infilling respond to different drivers at different scales—local topography for fine‑grain densification, regional land‑use and biogeography for broad shifts. One size does not fit a mountain.
  • The chemistry of blue carbon starts in the cracks. Using sub‑millimeter 2D gels, Gwenaël Abril and the BOREA team revealed razor‑sharp pH and alkalinity gradients in mangrove porewaters from Pará to Rio. These micro‑landscapes—influenced by rainfall, bioturbation and hydrodynamics—govern how much CO₂ stays locked versus escapes, refining budgets for Earth’s coastal lungs.
  • French diets got a little greener… and one metric got red. Helene Charreire and collaborators at IDEES & IRIHS tracked 8,905 adults over 8 years: greenhouse gases fell ~12% and water use ~1%—but ecological infrastructure use (a biodiversity proxy) shrank 9%. Four dietary paths emerged; those shifting plant‑ward trimmed impacts most, while meat‑leaning paths nudged pressures up. Sustainability lives in daily choices—and in the fine print.

  • Make zeolites last by weaving them right. Simona Moldovan and a Franco‑Chinese team at GPM, IRMA & LCS interlaced Al‑rich and Si‑rich nanodomains inside single crystals, aligning surface and bulk compositions. In methanol‑to‑hydrocarbons, lifetimes nearly doubled versus conventional crystals—proof that where you put the aluminum matters as much as how much you add.
  • Shorter pathways, faster products. With urea‑seeded growth, Junwei Wu and colleagues at CIMAP, IRMA & LCS made ZSM‑5 nanoplates with ultra‑short b‑axes that speed molecular diffusion. In MTO, they delivered a ~30% higher propylene/ethylene ratio and roughly doubled catalyst life—nanogeometry as a lever for selectivity and stability.
  • Electricity from living soils. In lemongrass plant‑microbial fuel cells, N’Gissa Attah and the GPM group mapped performance versus electrode design and spacing. A 7.5‑cm inter‑electrode gap hit 127 mW/m² and kept trickling power at night—an inexpensive blueprint for greener sensors and trickle‑power in off‑grid fields.

  • The smell of warm bread—and the logic of ancient production. In his habilitation, Nicolas Monteix at GRHis & IRIHS re‑assembled the workflow of Roman bakeries at Pompeii, from grain stores to kneading, ovens and delivery. By marrying archaeological digs with ethnographic “operational chains,” he shows how tools, gestures, energy and built space knit an industry—and a city—together.
  • Six millennia on a city block. At the École d’État‑Major in Compiègne, Aurélie Mayer and the team at CRAHAM uncovered a time‑stacked puzzle: Neolithic tools, protohistoric pits, high‑medieval craft huts, grain stores and, later, Carmelite gardens and 19th‑century barracks. Layer by layer, they trace how diets, trades and defenses moved, before plans on parchment became stones in the ground.
    • Les termes à retenir
    Ce nuage de mots-clés représente un échantillon des termes, les plus récents et les plus fréquents au global, associés aux publications normandes, reflétant les thématiques et tendances du moment.
    Ce nuage de mots-clés représente un échantillon des termes, les plus récents et les plus fréquents au global, associés aux publications normandes, reflétant les thématiques et tendances du moment.