Institution
St Petersburg University
Recent research
- Biology
Abstract High-quality genome assemblies are essential for robust research across biological and medical fields. Assembly errors can have far-reaching consequences for downstream analyses, including gene annotation and the inference of synteny. In contrast to the rapid growth of g...
- Materials & EnergyOpen access
Crystal Structure of 1,1-Dimethyl-3-(quinolin-2-yl)urea and 3-(Isoquinolin-1-yl)-1,1-dimethylurea
The crystal structures of two isomeric urea derivatives—1,1-dimethyl-3-(quinolin-2-yl)urea (1) and 3-(isoquinolin-1-yl)-1,1-dimethylurea (2)—have been investigated by single-crystal X-ray diffraction. These compounds differ in the relative position of the heterocyclic nitrogen at...
- Engineering & Technology
ABSTRACT High‐power fast‐charging lithium‐ion batteries (LIBs) are indispensable energy sources for electric vehicles and consumer electronics. LiCoO 2 (LCO) offers remarkable energy density and high voltage but suffers from structural degradation and irreversible O3/H1‐3 phase t...
- Engineering & TechnologyOpen access
Despite extensive research on iron-based metal matrix composites (Fe-based MMCs), an integrated assessment linking fabrication methods, reinforcement architectures, interface engineering, and strengthening mechanisms remains limited. This review summarizes recent advances in Fe-b...
- Materials & Energy
Abstract Amino acids play a fundamental role in biological processes and have various practical applications. Specifically, they have been considered as promising agents for the preparation of environmentally friendly deep eutectic solvents. To understand the physicochemical beha...
- Health & MedicineOpen access
Abstract Integrastatins and their biogenetic counterparts possess a rare heterotetracyclic framework containing an unprecedented [6/6/6/6]-tetracyclic skeleton and a central [3/3/1]-bicyclic ketal core with high pharmaceutical potential, particularly due to their potent anti-HIV-...
- AI & ComputingOpen access
On Operator Estimates in the Homogenization of Lévy-Type Operators with Periodic Coefficients
Abstract. The paper deals with homogenization of self-adjoint operators in [Formula: see text] of the form [Formula: see text], where [Formula: see text], and [Formula: see text] is a small parameter. It is assumed that the function [Formula: see text] is [Formula: see text]-peri...
- Materials & Energy
Abstract The evolution of magnetic properties in molybdenum chloride systems caused by structural motif changes was investigated by magnetic property measurements and DFT calculations. In ξ-MoCl5, characterized by the presence of molybdenum dimers, the formation of ferromagnetic...
- Climate & EnvironmentOpen access
The taxonomic composition and zoogeographic characteristics of the malacofauna of the upper Konda River basin, a major left tributary of the Irtysh River within the taiga zone of Western Siberia, were identified. A total of 27 species of freshwater mollusks were recorded, includi...
- Materials & Energy
Abstract Liquid organic hydrogen carriers (LOHCs) are an attractive option for long-term hydrogen storage. Among different concepts currently discussed, systems based on α,ω-alkanediols and their corresponding lactones stand out because hydrogen release is significantly less endo...
- Engineering & TechnologyOpen access
Contrasting Resilience Diagnostics in Route-Preserving Multimodal Transit Hypergraphs
Most multimodal transit studies use pairwise or multilayer graphs that discard route membership. We construct route-preserving bus–metro hypergraphs for 45 Chinese cities. A route-support rule makes node viability depend on the fraction of incident routes that remain viable. Tran...
- AI & Computing
Universal Boolean algebras, their ideals, and applications to semantic classes of models
We explore numbered Boolean algebras over classes Ξ of arithmetical and analytical hierarchies. We show the existence and uniqueness (up to computable isomorphism) of universal Boolean Ξ -algebras, determine the classes in which such algebras exist, and classify the universal alg...
- Physics & SpaceOpen access
Non-Hermitian trapping of Dirac exciton-polariton condensates in a perovskite metasurface
Massless Dirac particles avoid trapping because of their exceptional tunneling properties manifested in the so-called Klein paradox. This conclusion stems from the conservative treatment, but so far, it has not been extended to a non-Hermitian framework. Recently, driven-dissipat...
- Physics & SpaceOpen access
On Thermal Hall Effect in Boson Systems
We theoretically discuss the thermal Hall effect in boson systems keeping in mind possible applications to magnetically ordered insulators with skyrmion lattice ground state. The magnon spectrum of such systems may undergo a topological transition upon the variation of magnetic f...
- Engineering & TechnologyOpen access
<title>Abstract</title> The Central Asian Orogenic Belt possesses abundant mineral resources. As mining activities extend into high-altitude cold regions, the safety and stability of rock engineering projects, such as open-pit mine slopes, have become increasingly prominent. This...
- Society & EconomicsOpen access
With global climate action lagging behind and record-breaking heat waves occurring with increasing frequency, China’s role in achieving the temperature control targets of the Paris Agreement has become increasingly critical. As the world’s largest carbon emitter, the pace, trajec...
- Health & MedicineOpen access
Background: The role of dopamine in brain functions has been well established, and dopamine imbalances can cause problems in working memory and spatial learning. The dopamine transporter (DAT) plays a significant role in dopamine regulation. Rats with a knockout of the dopamine t...
- AI & ComputingOpen access
This paper develops an analytical framework for the joint design of central bank digital currency (CBDC) and its underlying ledger architecture. We treat a digital monetary system as a tuple M = (S, R, C, I)—supply state, rule set, circulation parameters, and incentive structure—...
- Materials & EnergyOpen access
The crystal structure and physicochemical properties of a new Ni/Zn codoped bismuth antimonite pyrochlore, synthesized by the solid-phase reaction method, were investigated. The most optimal outcomes of Rietveld refinement for Bi2.7Zn0.46Ni0.70Sb2O10+Δ were achieved for the model...
- BiologyOpen access
All taxa of plants have undergone several rounds of whole-genome duplication (WGD), accompanying interspecific and intergeneric crosses; subsequently, some part of one or both parent genomes in hybrid plants can be eliminated. The objective of this study was to evaluate the relat...