National Academy of Sciences of Ukraine

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...

A research-based values formation model for gender equality in security sector education

Background Professional education in the security sector faces a persistent challenge: formal acceptance of gender equality as a policy requirement rarely translates into genuine values internalization guiding behavior. Instruction-based approaches tend to produce knowledge, and...

The Evolution of Low-ionization Electron Densities in Galaxies across Cosmic Epochs

Abstract We investigate the low-ionization electron density in the interstellar medium (ISM) of galaxies across 0 < z < 8, derived with the [O ii ] λλ 3727, 3730 and [S ii ] λλ 6718, 6733 doublets, using both deep JWST/NIRCam/grism and NIRSpec/MSA spectroscopy. Along with ancilla...

Intelligent adaptive energy management framework for hybrid solar-grid EV fast-charging stations with energy storage and time-based demand response optimization

The rapid expansion of electric vehicle (EVs) is significantly increasing pressure on the conventional electrical grid and introducing new challenges in load management, peak demand, and grid stability. Conventional grid systems, dependent on fossil fuel-based generation, contrib...

Extremal Hysteretic Energy Dissipation in a Dry-Friction Vibration Isolator with a Longitudinally Slit Cylindrical Shell and Deformable Filler

Vibration isolators based on a slit cylindrical shell with an elastic filler are proposed for the needs of the mining, oil and gas, and construction industries; in these devices, energy dissipation is provided by the effects of distributed positional dry friction between the cont...

Experimental studies of heat transfer regimes with boiling crisis in a vertical channel at high heat fluxes

The results of experimental studies of heat transfer during water boiling in a vertical heated tube with a diameter of 0.013 m and a length of 2.6 m are presented. The studies were conducted in the following ranges of variation: pressure from 4 MPa to 16 MPa, mass velocity from 1...

Microwave properties of PVC-based composite films with yttrium iron garnet and carbon fillers

Thin poly(vinyl chloride)-based composite films containing 20 wt.% Y3Fe5O12 and 10 wt.% carbon filler exhibit a pronounced filler-dependent electromagnetic response in the Ka-band. Activated carbon, MWCNTs, graphene nanoplatelets, carbon nanoparticles, and carbon black were chara...

Conserved β-tubulin as a target of ivermectin in plant-parasitic nematodes: molecular modelling and experimental protection of potato

Ivermectin (IVM), a widely used antiparasitic drug, primarily targets glutamate-gated chloride channels; however, it has also been shown to interact with β-tubulin, suggesting an additional mechanism of action. Our study aimed to evaluate the conservation of β-tubulin among plant...

Autumn edible mushrooms’ euphoria in Dzūkija, SE Lithuania: lessons to learn for an ethnobiology of situated and resilient forest practices

Dzūkija is the most heavily forested region of Lithuania, and foragers and ethnographers alike describe it as the country’s epicentre of mushroom enthusiasm. We interviewed 34 foragers there in October 2025 (20 women, 14 men; mean age 56 years) to ask why gathering fungi in this...

An EV-Assisted Dual T-Type Inverter SAPF with Model Predictive Control for Advanced Power Quality Enhancement

In order to improve power quality in low-voltage distribution networks with nonlinear, distorted, and unbalanced loads, this research suggests an innovative design for Shunt Active Power Filters (SAPFs). Compared to conventional single-inverter SAPF structures, the improved metho...

Fast post-ploughing recovery of traditionally managed semi-natural mountain grasslands in the Romanian Carpathians

Mountain hay meadows are among the most species-rich grassland habitats in Europe, yet many have been historically ploughed and later re-established under traditional management. We examined the legacy effects of past ploughing on plant diversity, vegetation composition, and soil...

Exponential growth and stabilization of Ebola cases in the DRC in 2026

Abstract WHO has declared the Ebola outbreak in 2026 an extraordinary event, which requires a coordinated international response. This epidemic has become the second-largest one after the Ebola outbreak in West Africa in 2013-2016. As of August 16, 2026, the accumulated number of...

Nature of the Localized V 3 d Electrons in Mo- and W-Doped BiVO4 Revealed by Soft X-ray Photoemission and Absorption Spectroscopy

Abstract We have investigated the effects of Mo and W doping on BiVO4 by means of X-ray photoemission spectroscopy (XPS) and X-ray absorption spectroscopy (XAS). The V 2p XPS spectra indicate that the substitution of W6+ and Mo6+ for V5+ induces the formation of V4+ species. In a...

Pushing the boundaries of virtual screening scale of combinatorial spaces with the V-SYNTHES approach

Computational screening of giga-scale chemical spaces opens a cost-effective path to high-quality hit identification, providing entry points for drug discovery. As these on-demand spaces grow and successful applications multiply, rigorous blind benchmarks like CACHE Challenges pr...

Heterologous transfection of an endornavirus alters the phenotype of Trichophyton rubrum in vitro and in vivo

Mycoviruses are widely distributed across fungal taxa, yet their impact on the phenotype and pathogenicity of dermatophytes remains poorly understood. In this study, we investigated the presence of mycoviruses in clinical isolates of Trichophyton sp. and characterized the phenoty...

AGN Reference Fields: finding charts and comparison-star sequences for optical AGN monitoring

AGN Reference Fields is a citable reference dataset for differential optical photometry of active galactic nuclei. Version 1.0 contains finding-chart information and local comparison-star sequences for Mrk 42, IC 5287, and Mrk 845, based on IAC80/CAMELOT2 observations. The archiv...

PERSPECTIVE: Cryopreservation of cell-populated bioengineered constructs - a roadmap for challenges, strategies, and translation

The advancement of cell-populated bioengineered constructs (BECs) has created an ever-increasing demand for effective cryopreservation strategies that guarantee long-term storage without compromising structural integrity or biological function. By allowing constructs to be stored...

Optimization of Stropharia rugosoannulata extracts using artificial intelligence and response surface methodology and comparative evaluation of their biological activities

Stropharia rugosoannulata Farl. ex Murrill is an edible mushroom species recognized for its nutritional value and potential functional properties. In this study, extraction conditions were optimized to maximize the biological potential of its extracts. Ultrasonically assisted ext...

Piecewise Linear Regularization of Wagner’s Outflow–Pressure Relationship to Deal with Low Nodal Outflows

Abstract This technical note presents a technique for the regularization of Wagner’s outflow−pressure relationship, which is an alternative to the regularization used in EPANET 2.2. The proposed technique is based on approximating the zero vicinity of Wagner’s relationship by a p...