Polish Academy of Sciences

Realignment of ferroelectric nematic by photoinduced electric field

Liquid crystal displays (LCDs) use thin pixels of a paraelectric nematic, confined between two glass plates with transparent indium tin oxide (ITO) electrodes. A voltage applied to the electrodes realigns the molecules, changing optical appearance of the pixel. Here, we demonstra...

An Alternative Strategy for Albumin Binding in Therapeutics. Proof-of-Concept Synthesis of Metallacarborane−Insulin Conjugates

Abstract Commercialized designs of long-acting insulins often base their protracted mode of action on fatty acid acylation, which enables interaction between insulin and serum albumin. Building on that experience, we propose an alternative design where fatty acids are replaced wi...

Bioprinting-Enabled Customization of Biohybrid Actuators: Scaling Dimensions and Functional Complexity

Biohybrid actuators integrate living contractile cells with engineered materials, combining biological force generation with the structural and functional control offered by synthetic components. However, translating engineered muscle tissue into reproducible, high-performance bi...

Depressive Symptoms in Adults with Obesity and Their Associations with Sociodemographic, Health and Lifestyle Factors: A Secondary Analysis of a Cross-Sectional Study

Background/Objectives: Research indicates a bidirectional association between obesity and depression. The co-occurrence of both disorders has serious clinical implications. The aim of this study was to assess the prevalence of self-reported depressive symptoms (DS) in a group of...

Excavating a possible Christianisation mission: the medieval stronghold in Pyrzyce

Historical accounts of Otto of Bamberg’s twelfth-century Christianisation mission in Pyrzyce, Poland, have inspired archaeological excavations, which in turn influenced anthropological research into contemporary religious imagery. Archaeological investigations at Pyrzyce’s early...

Manganese-Enhanced Magnetic Resonance Imaging: From Translational Research to First-in-Human Trials in Oncology

Manganese-enhanced magnetic resonance imaging (MEMRI) is a functional imaging technique with several potential applications in various research fields. Manganese-enhanced magnetic resonance imaging uses paramagnetic manganese (II) ions (Mn 2+ ) as the contrast enhancer, as they a...

The microstructure and some properties of the novel biomedical ZrTiFe alloy subjected to high-pressure torsion deformation

Abstract Zr- and Ti-based alloys, due to their excellent mechanical, physical, and biological properties, are increasingly used as biomaterials. Although these alloys have been used in medical applications for over 60 years, several issues remain associated with their use in this...

Slice‐Wise Quality Assessment of High b Value Breast DWI via Deep Learning‐Based Artifact Detection

BACKGROUND: Diffusion-weighted imaging (DWI) can support lesion detection and characterization in breast MRI. Therefore, DWI is increasingly being incorporated into breast MRI protocols to address some of the shortcomings of routine clinical breast MRI. However, especially high b...

Quantum spectral authentication: entity authentication and key derivation from a hidden eigenstate of a public unitary challenge

Abstract We introduce Quantum Spectral Authentication (QSA), a symmetric-key entity-authentication and key-derivation protocol in which a remote endpoint proves it still holds a hidden planted state, an eigenstate of the challenge it can prepare, without revealing it. Each round...

Inflammation induced by endotoxin from Escherichia coli enables the central action of caffeine on GnRH/LH secretion in female sheep

Caffeine is considered to be the most utilized psychoactive stimulant worldwide. It easily crosses the blood-brain barrier and may antagonize adenosine receptors and activate ryanodine receptors in the brain. Administered peripherally, caffeine reduces inflammatory-associated cha...

Thioredoxin h1-targeted proteins in European beech (Fagus sylvatica L.): Insights into metabolic control, stress response, and seed longevity

Seed viability and longevity underpin forest regeneration under changing environmental conditions. European beech ( Fagus sylvatica L.) produces intermediate seeds that gradually lose viability during storage, largely through oxidative stress, which makes redox homeostasis centra...

Antioxidant responses and sodium accumulation in Juncus effusus and Schoenoplectus lacustris exposed to road salt: implications for freshwater remediation

Road salt pollution is an emerging threat to freshwater ecosystems, especially in temperate regions where sodium chloride (NaCl) is widely used for winter road maintenance. This study assessed the antioxidant response and sodium accumulation potential of two native plant species,...

Synthesis of colloidal silver-polyphenols nanocomplexes - physicochemical properties, DFT calculation, modeling of adsorption and antibacterial activity

Abstract The aim of the studies was the investigation of nanocomplexes based on a silver core and attached three polyphenolic compounds belonging to tannins i.e. tannic acid (AgNPs-TA), 3,6-bis- O -di- O -galloyl-1,2,4-tri- O -galloyl- β -D-glucose (AgNPs-RT) and 1,2,3,4,6-penta-...

MRI Characteristics of Myelin Oligodendrocyte Glycoprotein Antibody-Associated Disease

Importance Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) is a demyelinating disease distinct from multiple sclerosis (MS) and aquaporin-4 antibody-positive neuromyelitis optica spectrum disorder (AQP4+NMOSD). Magnetic resonance imaging (MRI) is central t...

User-defined specifications of a cable yarder for the Mediterranean mountains

Cable yarding is the common method for timber extraction on steep terrain, and yet its use in the Mediterranean mountains remains limited despite decades of promotion. Then the question arises whether one is promoting the right equipment to the right audience. To answer that ques...

Listening to Tsunami Waves Induced by Glacier Calving

Abstract Processes at the ice–ocean interface play a central role in regulating the stability of marine‐terminating glaciers and ice sheets and drive ocean freshening and mixing. Iceberg calving—a mechanical loss of ice—generates ocean waves and promotes water‐mass exchange in gl...

Alon–Tarsi for Hypergraphs

Given a hypergraph $H=(V, E)$, define for every edge $e\in E$ a linear expression with arguments corresponding to the vertices. Next, let the polynomial $p_H$ be the product of such linear expressions for all edges. Our main goal is to find a relationship between the Alon-Tarsi n...

Mast seeding mitigates the negative demographic effects of conspecific adults on rowan seedling survival.

BACKGROUND AND AIMS: Seedling mortality filters tree recruitment, yet we know little about whether the year in which a seedling is produced leaves a demographic signal after emergence. This gap is central for mast-seeding species, where seed crops vary widely among years and may...

Miseeda: between kingdoms, through epochs—reconstructing a history of the Mahas region (Sudan)

The Good Shepherd of Miseeda project investigates remains in a section of the Mahas region in northern Sudan. Centred on a church built around an ancient petroglyph, integrated archaeological survey and ethnographic research trace millennia of cultural interaction, continuity and...

A new balloon-borne system for measuring the vertical variability of aerosol optical properties using low-cost sensors

This study presents a newly developed balloon-borne AeroSonde system equipped with calibrated low-cost optical particulate matter sensors (SPS30) for vertically resolved aerosol optical measurements. Calibration of the sensors against reference instruments (Aurora 4000 nephelomet...