Institut Polytechnique de Bordeaux

Accurately Probing [Fe(CN)6] Defects in Prussian Blue Analogues

Abstract Prussian blue analogues AxM[Fe(CN)6]1–y·zH2O (A = Na, K, M = Fe, Mn) possess a rich crystal chemistry that allows their use as insertion materials for batteries, water treatment, and smart windows, among others, applications. Despite being simple in appearance, their syn...

Non-linear mechanical field reconstruction coupling recurrent neural networks with physics-informed graph neural networks

Reconstructing local stress fields in heterogeneous microstructures under non-linear, history-dependent loading remains a major computational bottleneck in multi-scale simulations. We propose a coupled LSTM-GNN framework that links the temporal and spatial aspects of local stress...

Multiscale Method for Estimating the Thermal Properties of Sandwich Materials Using Infrared Thermography

Characterizing the thermal properties of sandwich materials remains complex because it demands a method that can independently analyze both the thin and thick layers within the same sample. We propose combining flash and step thermography methods with analytical modeling based on...

Evaluation of Oral Health in Early Stages of Chronic Kidney Disease

Background/Objectives: Oral health may be affected by chronic kidney disease (CKD) through mechanisms including uremic toxin accumulation, immune dysregulation, and treatment-related factors, although these relationships remain poorly understood. This study aimed to describe oral...

Quantum Graph Theory by Example

Quantum graphs have been introduced by Duan, Severini, and Winter to describe the zero-error behaviour of quantum channels. Since then, quantum graph theory has become a field of study in its own right. A substantial source of difficulty in working with quantum graphs compared to...

Intra- and inter-specific variability in benthic foraminifera modulates surface sediment reworking

Abstract Bioturbation is a key ecological process that regulates benthic ecosystem functioning, including organic matter remineralization and nutrient regeneration. Despite growing evidence that meiofauna, and benthic foraminifera in particular, contribute to sediment bioturbatio...

Vocal encoding of heritable sociability prevails over emotions in sheep bleats

Vocalizations of animals are good indicators of their emotions. Temperament is known to influence the regulation and expression of emotions. However, how animal temperament affects their vocalizations and particularly their vocal expressions of emotions remains largely unexplored...

Faster Hamiltonian Monte Carlo by learning leapfrog scale: an offline randomized solution

Abstract We introduce a Hamiltonian Monte Carlo (HMC) methodology based on an offline empirical calibration of randomized leapfrog parameters. The approach, referred to as eHMC, where e stands for empirical, leverages importance sampling to construct an empirical distribution on...

Synergism Between Krameria lappacea (Dombey) Burdet & B.B.Simpson Extracts and Gentamicin Against Gram-Positive Bacteria

Background: Combination therapy is increasingly explored as an alternative approach to manage bacterial infections and limit the emergence of antibiotic resistance. Building on traditional medicinal knowledge, this study aimed to investigate the potential synergistic antibacteria...

On Hyperbolic Approximations for a Class of Dispersive and Diffusive-Dispersive Equations

Abstract We introduce novel approximate systems for dispersive and diffusive-dispersive equations with nonlinear fluxes. For purely dispersive equations, we construct a first-order, strictly hyperbolic approximation. Local well-posedness of smooth solutions is achieved by constru...

3D thermal modeling of Lascaux Cave: Dynamics of air circulation and implications for its microclimate

Understanding the thermal dynamics of painted caves, such as the Lascaux Cave, is essential for predicting and preventing deterioration of walls and artworks, particularly through processes such as condensation. As a first step, heat conduction within the surrounding rock mass wa...

Generalizable and equitable automated ischaemic stroke lesion segmentation with vision transformers

Abstract Background Ischaemic stroke, a leading cause of death and disability, relies on neuroimaging for characterising the anatomical pattern of injury. Diffusion-weighted MRI (DWI) provides the most anatomically specific signal in acute ischaemic stroke but poses substantial c...

Tuning the Activation Barrier for Oxygen Exchange on Mixed Conducting Oxide with Fine Control of Transition Metal Impurities

Abstract The energy barrier for oxygen exchange at the surface of mixed conducting oxides is a multifactor term that remains difficult to predict with existing models. Here, we describe an experimental approach to fine-tune this barrier on Pr0.1Ce0.9O2-δ used as a model mixed con...

Bryozoan‐Rich Carbonate Units of the Erfoud Area ( SE Morocco) Record Latest Katian to Early Hirnantian Interglacial Intervals

ABSTRACT Carbonate intervals form distinctive units distributed throughout the Upper Ordovician stratal record of the clastic‐dominated Mediterranean Province of the Gondwana platform. In southern Morocco (eastern Anti‐Atlas), bryozoan‐rich deposits comprise the mixed carbonate‐s...

Microstructural Evolution of Single-Grain-like TiO2 Microspheres Prepared Through Spray Drying and Multi-Step Sintering

The preparation of TiO2 microspheres by spray drying followed by controlled sintering was investigated. Starting from commercial rutile TiO2 nanoparticles dispersed in water, spherical microspheres with broad size distributions were produced by adjusting key spray-drying paramete...

Antibacterial Cyclic Oligo(disulfide)s with Tunable Hydrophilicity Dictate Membrane Interactions and Distinct Metabolic Interference

Abstract To combat drug-resistant bacteria, antimicrobial agents with tunable and multi-modal mechanisms are urgently needed. While membrane-disrupting polymers have been widely explored, precisely regulating their membrane interactions and downstream metabolic effects remains ch...

Kissing Number of Codes: A Survey

The kissing number of a code is the average number of pairs of codewords at minimum distance from each other. It has fundamental applications in determining code performance. Besides, a recent interest has arisen from the field of side-channel analysis of algorithms handling sens...

NucGen3D: A synthetic framework for large-scale 3D nuclear segmentation with open-source training data and models

A bstract Robust nuclear segmentation in 3D microscopy images is a critical yet unresolved challenge in quantitative cell biology, hindered by the scarcity and variability of annotated volumetric datasets. Because such data are difficult to obtain, most state-of-the-art approache...

Polyproline: A Synthetic Polypeptide With Unique Properties

Polyproline is a unique polypeptide defined by its unusual conformational rigidity and physicochemical behavior. Addressing long-standing challenges in its synthesis and characterization, this mini-review highlights recent advances in the ring-opening polymerization of proline N-...

Titanium‐Catalyzed Defluorination of Poly(Vinyl Fluoride) and Poly(Vinylidene Fluoride) Under Friedel–Crafts Conditions

ABSTRACT The defluorination of poly(vinyl fluoride) (PVF) and poly(vinylidene fluoride) (PVDF) fluoropolymers catalyzed by titanium species in the presence of triethylsilane (Et 3 SiH) and aromatic solvents is reported. Commercially available Ti complexes (e.g., [Cp 2 TiCl 2 ] (...