St Petersburg University

Safety and Efficacy of Acute Normovolemic Hemodilution in Female Patients

Importance Female patients undergoing cardiac surgery have a higher transfusion burden, yet they remain underrepresented in randomized clinical trials. Although the ANH trial showed no significant reduction in the proportion of patients receiving allogeneic blood transfusions wit...

Unveiling giant Rashba splitting in graphene via in situ cryogenic copper adatom deposition and multimodal characterization

Enhancing spin–orbit interaction (SOI) in graphene is a critical step toward realizing graphene-based spintronic devices, yet it has remained experimentally challenging. In this work, we employ in situ cryogenic deposition of copper adatoms on graphene to overcome previous limita...

Fimbriarioides intermedia and F. lintoni (Cestoda: Hymenolepididae): molecular phylogeny, species status, and transmission in Arctic coastal ecosystems.

has a trans-Arctic distribution and is represented by the same population in all these regions. This is due to the high vagility of its definitive hosts, sea ducks, which make long-distance migrations along the coasts of the northern Palaearctic seas, and the almost circumpolar d...

Dynamic self-polarization of the nuclear spins in a GaAs quantum well

We demonstrate the self-polarization regime of nuclear spins, originally predicted in 1972 by Dyakonov and Perel and achieved here by lattice temperature reduction into the millikelvin range. We first identify a gallium arsenide-based quantum well structure as highly suited by de...

Homogenization of Non-symmetric Convolution Type Operators

The paper studies homogenization problem for a bounded in $$L_2(\mathbb {R}^d)$$ convolution type operator $${\mathbb {A}}_\varepsilon $$ , $$\varepsilon >0$$ , of the form $$\begin{aligned} ({\mathbb {A}}_\varepsilon u) ({\textbf{x}}) = \varepsilon ^{-d-2} \int _{\mathbb {R}^d}...

Structure of Carbon Pools in Surface and Subsurface Horizons of the Main Soil Types in the Russian Arctic

Arctic and subarctic soils store approximately half of the global soil organic carbon (SOC) pool, yet the structural stability and vulnerability of these carbon reservoirs remain poorly constrained. Most regional assessments treat the cryopedosphere as a homogeneous entity, overl...

mPEG-b-PCL-Based Nanoformulations of Aziridine-Functionalized 1,3,5-Triazine Derivative for Cancer Treatment

Developing nanoformulations of antitumor drugs represents a critical priority in addressing key challenges of free drug administration such as low therapeutic efficacy, poor bioavailability, and severe side effects, including high systemic toxicity. In this study, mPEG-b-PCL bloc...

Interfacing Two Topological Insulators, α -Bismuthene and β -Silicene, with a Rare-Earth Magnetic Monolayer

Abstract The integration of diverse electronic phenomena, such as magnetism and nontrivial topology, into a single low-dimensional system gives rise to unusual quantum effects. Here we combine two 2D topological insulators, α-bismuthene and β-silicene, with a Ho monolayer. Bismut...

Properties of resting state functional connectivity associated with integrated combined subscales of Dark Triad

Abstract The neurobiological properties of the human brain associated with separate negative personality traits such as narcissism, psychopathy, and Machiavellianism, known as a Dark Triad (DT), have been extensively studied. However, their combinatorial properties have remained...

Genome sequence and assembly of endophyte Pseudomonas lini Can06R isolated from the roots of Chenopodium album L.

ABSTRACT The genome of endophyte Pseudomonas lini strain Can06R isolated from surface-sterilized roots of Chenopodium album L. was sequenced using an Illumina NextSeq 1000 platform and assembled with SPAdes. The assembly is 6,302,676 bp in length, has a GC content of 58.8%, and c...

Post-Release Changes of the Goat’s Rue Rhizobia (Neorhizobium galegae bv. orientalis) Genomes in the Field: Prospects for Breeding the Symbiotically Effective Strains

Root nodule bacteria (rhizobia) fixing N2 in cooperation with legumes are broadly used for improving production of these plants inoculated with strains selected for high symbiotic activity. These bacteria are characterized by enormous evolutionary plasticity based on genomic rear...

From vulnerability to adaptation: Institutional, technological, and fiscal moderators of climate risk in renewable energy development

Understanding how climate risk shapes the trajectory of renewable energy transitions is critical for global sustainability. While existing literature has largely treated climate change as an exogenous shock that undermines renewable energy systems, this study re-examines that pre...

Mycobiota of the Rhizosphere of Vaccinium Shrubs in a Pine Forest in the Early Months after a Ground Fire

Abstract Ground fires are a frequent phenomenon in boreal forests. Scotch pine (Pinus sylvestris), as a major climax species, plays a key ecological role within these ecosystems. The soil and rhizosphere microbiome exerts a significant influence on the postfire recovery of pine f...

Non-adiabatic effects induced by strong light–matter coupling in cavity QED

We present a systematic study of the diagonal Born-Oppenheimer correction (DBOC) for atoms and molecules embedded in optical cavities and interacting with a quantized electromagnetic field. By explicitly evaluating the nuclear kinetic energy operator, we analyze cavity-induced mo...

Nanoparticle Behavior in the Body: Biochemical, Pharmacological and Cellular Aspects

The behavior of nanoparticles (NPs) in the body is a complex, multilevel process governed by a cascade of physicochemical and biological interactions. At the molecular level, these processes include protein adsorption and formation of the biomolecular corona, ion release, and sur...

Synthesis of Furan and Benzene Derivatives Containing Unsaturated Substituents with Electron-Withdrawing Groups, and Analysis of Their Antimicrobial Activity

Furan-2-yl substituted ethenes and conjugated butadienes containing two geminal electron-withdrawing groups, as well as phenylbutadienes with two electron acceptors, were synthesized from the corresponding aldehydes and various β-dicarbonyl compounds via aldol condensation. React...

Engineered Biographical Defects in Two-Dimensional Nonanediaminium Lead Iodide Perovskites: From Synthesis to Reversible Photodegradation

Abstract The choice of lead precursor (PbO versus PbI2), the Pb:diamine stoichiometric ratio, and the crystallization regime influence the defect landscape and optical stability of the layered hybrid perovskite (NonDA)PbI4. Diffuse reflectance spectroscopy, X-ray photoelectron sp...

Ciliated larvae turn spiny: novelties in the miniaturized miracidium of Bunocotyle progenetica (Digenea: Hemiuroidea)

Abstract Background Miracidia, the larvae of digeneans, infect a molluscan host. In many species they are ciliated swimmers that actively locate a snail. In several digenean lineages, however, the miracidia are miniaturized and enter molluscs passively, being swallowed. The contr...

Advanced statistical analysis of linear and nonlinear Regge trajectories for light non-strange mesons

Abstract A rigorous statistical analysis of Regge-type trajectories for light non-strange meson mass spectra is carried out, which explicitly accounts for experimental uncertainties. We test three scenarios: a linear model with distinct radial ( n ) and orbital ( l ) slopes (Mode...

Sustainable supply chain collaboration in emerging markets: core bibliometric analysis

Purpose The purpose of this study is to conduct a systematic examination of the fragmented and underexplored field of sustainable supply chain collaboration (SSCC) in emerging markets. The aim is to clarify conceptual ambiguities, map the theoretical underpinnings and propose an...