Centre National de la Recherche Scientifique

The Characteristic Group of Lie LCP Manifolds

Abstract The (reduced) characteristic group of a locally conformally product manifold is obtained by restricting the action of its fundamental group to the non-flat factor of the universal cover, and taking the connected component of the identity in the closure of this restrictio...

A single-cell atlas of large B cell lymphomas reveals distinct malignant archetypes predictive of clinical outcomes

Large B cell lymphomas (LBCLs) exhibit significant heterogeneity which leads to disparate treatment response, with up to 40% of patients developing refractory disease or relapsing within the first two years. To understand the cellular and molecular basis of this heterogeneity, we...

Watermarking large language models in Europe: interpreting the AI act in light of technology

Abstract To foster trustworthy Artificial Intelligence (AI) within the European Union, the AI Act requires providers to mark and detect the outputs of their general-purpose models. The Article 50 and Recital 133 call for marking methods that are "sufficiently reliable, interopera...

Multiscale Symmetry Breaking Enables Tunable Magnetic Anisotropy and Damping in Co 2 FeAl Thin Films

ABSTRACT The ability to simultaneously engineer magnetic stability and spin dissipation remains difficult to realize in scalable metallic thin films. Here, we show that multiscale symmetry breaking provides a route to achieve this control in polycrystalline Co 2 FeAl films withou...

Engineering Ultra‐Low Fe or Ni Loading in Polymer Derived SiCN(O) Fibre Mats: Exploring the Performance towards Alkaline OER

ABSTRACT In this study, Fe or Ni‐anchored silicon carbo(xy)nitride (SiCN(O)) fibre mats were synthesized via the polymer‐derived ceramics (PDC) approach to investigate their electrocatalytic performance toward alkaline OER. The resulting fibrous‐supported pre‐catalysts formed por...

Evidence for the impact of fire activity on daily variations of IASI mid-tropospheric CO 2 anomalies at 8–11 km over South America: a pyroconvective fingerprint

Biomass burning is a major, highly variable source of atmospheric CO 2 , but its impact on the free troposphere remains difficult to quantify because of uncertainties in injection heights and transport. In the tropics, intense fires can trigger pyroconvective plumes that loft com...

Interpretable machine learning for automatic rock mass classification in TBM tunneling: a case study of Beishan URL

Abstract Accurate rock mass classification is essential for safe tunnel boring machine (TBM) excavation, yet raw TBM monitoring data are often affected by shutdowns, machine adjustments, and transient disturbances, weakening their correlation with geological conditions. This stud...

Hoeffding adaptive splitting trees for data stream classification with concept drift and ensemble learning

Abstract Ensembles of decision trees are well-established methods for data stream classification. In ensemble learning, Hoeffding Trees are widely adopted as base learners, performing periodic split attempts according to the Hoeffding bound. Recent studies, however, indicate that...

Long-Time Behavior of an Anisotropic Rigid Body Interacting with a Poiseuille Flow in an Unbounded 2-Dimensional Channel

Abstract. We study the long-time behavior of an elliptic rigid body which is allowed to vertically translate and rotate in a 2-dimensional unbounded channel under the action of a Poiseuille flow at large distances. The motion of the fluid is modeled by the incompressible Navier–S...

Exploring the spatial distribution of biomolecules in Pseudomonas aeruginosa biofilms formed on PDMS and lung explants by mass spectrometry imaging

Bacterial biofilms constitute a form of collective organization that enhances bacterial tolerance to both antibiotics and immune defences. Among bacteria, Pseudomonas aeruginosa (P. aeruginosa) is a major opportunistic pathogen, with marked biofilm-forming capacity, highly implic...

Migration and tuberculosis transmission in Hamburg, Germany: insights from 25 years of molecular epidemiology

Abstract Background Tuberculosis (TB) epidemiology in low-incidence settings is increasingly influenced by the importation of Mycobacterium tuberculosis complex (Mtbc) strains from high-incidence regions. Globally, more virulent “generalist” lineages such as Lineage 2 (L2) and Li...

Psychometric Properties of the French Version of the Physical Literacy Self-Description (PLSD) Questionnaire Among Children

This study sought to document the psychometric properties of scores on the French Version of the Physical Literacy Self-Description questionnaire. A sample of 191 French-speaking Canadian and French children, aged 5–12 years, participated in this study. Results from an explorator...

Parallel regulation of tissue morphogenesis and cell fate specification by RAR:RXR signalling during pancreas formation

During embryogenesis, morphologically diverse epithelial organs bud from different regions of the embryonic gut. The unique features of each nascent organ result from distinct cell fate specification and morphogenetic events elicited by organ-inducing cues. Retinoic acid is a pow...

Mechanochemical Hydrazone Synthesis From Isoniazid and Isophthalaldehyde: Kinetics and Process Optimization of a Competitive‐Consecutive Reaction

ABSTRACT Mechanochemistry has emerged a greener and more efficient alternative to solution‐based methods for hydrazone synthesis. However, prior studies have predominantly focused on final yields, reaction times, and biological activities, while giving limited attention to reacti...

Settlement and Landscape Transformations in the Khaybar Oasis From Late Antiquity to the Late Islamic Period

ABSTRACT Archaeological survey and targeted soundings by the Khaybar Longue Durée Archaeological Project ( Khaybar LDAP ) have provided the opportunity to reconstruct a first overview of settlement dynamics, land use and socioeconomic organisation from the late pre‐Islamic period...

Effects of radiative heat transfer on premixed spherically expanding NH3-air flames

This article numerically investigates the effects of radiation on the laminar burning velocity (LBV) extrapolated from microgravity spherical expanding NH 3 /air premixed flames, with equivalence ratios and pressures ranging from 0.7 to 1.3 and 1 to 50 atm, respectively. The simu...

Unravelling the impact of nitrogen deprivation on the morphology and nanomechanical properties of Parachlorella kessleri

Abstract Nitrogen deprivation is commonly applied to enhance lipid accumulation in microalgae for third-generation biofuel production. However, its influence on cell wall morphology and nanomechanical properties, which critically affect downstream processing, remains poorly explo...

Large-scale climate drivers of extreme compound events in the Amazon from interannual to long-term timescales (1982–2024)

Abstract Over recent decades Amazonia has experienced a marked intensification of floods and droughts. The record-breaking 2023–2024 drought, characterized by exceptional heat and dryness, motivates a closer analysis of compound extremes and their large-scale drivers. This study...

A new approach to measuring liquid metal density at high pressure and high temperature using aerodynamic levitation

Accurate knowledge of liquid metal density and its temperature dependence is essential for understanding phase transformations, thermophysical behavior, and the safe design of high-temperature engineering systems. While numerous techniques have been developed to measure the densi...

Bridging the gap between genomic, phenotypic, and modeling data in picophytoplankton–virus interactions

Abstract We present a comprehensive synthesis of recent developments in methodological approaches to combine experimental and genomic studies of picophytoplankton–virus interactions. This synthesis will not only enhance our understanding of these relationships but also stimulate...