Across the firewall: Foreign media's role in shaping Chinese social media narratives on the Russo-Ukrainian War.

There is a widespread perception that China's digital censorship distances its people from the global internet, and the Chinese Communist Party, through state-controlled media, is the main gatekeeper of information about foreign affairs. Our analysis of narratives about the Russo-Ukrainian War circulating on the Chinese social media platform Weibo challenges this view. Comparing narratives on Weibo with 8.

The 1831 CE mystery eruption identified as Zavaritskii caldera, Simushir Island (Kurils).

Polar ice cores and historical records evidence a large-magnitude volcanic eruption in 1831 CE. This event was estimated to have injected ~13 Tg of sulfur (S) into the stratosphere which produced various atmospheric optical phenomena and led to Northern Hemisphere climate cooling of ~1 °C. The source of this volcanic event remains enigmatic, though one hypothesis has linked it to a modest phreatomagmatic eruption of Ferdinandea in the Strait of Sicily, which may have emitted additional S through magma-crust interactions with evaporite rocks.

Multiomics dissection of human RAG deficiency reveals distinctive patterns of immune dysregulation but a common inflammatory signature.

Human recombination-activating gene (RAG) deficiency can manifest with distinct clinical and immunological phenotypes. By applying a multiomics approach to a large group of -mutated patients, we aimed at characterizing the immunopathology associated with each phenotype. Although defective T and B cell development is common to all phenotypes, patients with hypomorphic variants can generate T and B cells with signatures of immune dysregulation and produce autoantibodies to a broad range of self-antigens, including type I interferons.

Application of active biomonitoring technique for the assessment of air pollution by potentially toxic elements in urban areas in the Kemerovo Region, Russia.

In Kemerovo Region (Kuzbass, Southwest Siberia), there is the largest coal basin in Russia and one of the largest in the world. Active moss biomonitoring was applied to assess the impact of potentially toxic elements on air pollution in five urban areas of the region. In each of the chosen urban regions, the moss bags were exposed in November and December of 2022 at locations with varying degrees of anthropogenic pressure.

Nanoscale Titanium Oxide Memristive Structures for Neuromorphic Applications: Atomic Force Anodization Techniques, Modeling, Chemical Composition, and Resistive Switching Properties.

This paper presents the results of a study on the formation of nanostructures of electrochemical titanium oxide for neuromorphic applications. Three anodization synthesis techniques were considered to allow the formation of structures with different sizes and productivity: nanodot, lateral, and imprint. The mathematical model allowed us to calculate the processes of oxygen ion transfer to the reaction zone; the growth of the nanostructure due to the oxidation of the titanium film; and the formation of TiO, TiO, and TiO oxides in the volume of the growing nanostructure and the redistribution of oxygen vacancies and conduction channel.

Detonation Nanodiamond Soot-A Structurally Tailorable Hybrid Graphite/Nanodiamond Carbon-Based Material.

The results of a comprehensive investigation into the structure and properties of nanodiamond soot (NDS), obtained from the detonation of various explosive precursors (trinitrotoluene, a trinitrotoluene/hexogen mixture, and tetryl), are presented. The colloidal behavior of the NDS particles in different liquid media was studied. The results of the scanning electron microscopy, dynamic light scattering, zeta potential measurements, and laser diffraction analysis suggested a similarity in the morphology of the NDS particle aggregates and agglomerates.

Simulation of Arc Discharge in an Argon/Methane Mixture, Taking into Account the Evaporation of Anode Material in Problems Related to the Synthesis of Functional Nanostructures.

In this work, within the framework of a self-consistent model of arc discharge, a simulation of plasma parameters in a mixture of argon and methane was carried out, taking into account the evaporation of the electrode material in the case of a refractory and non-refractory cathode. It is shown that in the case of a refractory tungsten cathode, almost the same methane conversion rate is observed, leading to similar values in the density of the main methane conversion products (C, C, H) at different values of the discharge current density. However, with an increase in the current density, the evaporation rate of copper atoms from the anode increases, and a jump in the - characteristic is observed, caused by a change in the plasma-forming ion.

Size Dependence of the Band Gap of Core-Shell Tantalum and Tantalum Oxide (V) Nanoclusters.

Monodisperse films of spherical tantalum oxide (V) nanoclusters and spherical tantalum nanoclusters with a tantalum oxide shell with diameters of 1.4-8 nm were obtained by magnetron sputtering. The size of the deposited nanoclusters was controlled using a quadrupole mass filter.

Tungsten Diselenide Nanoparticles Produced via Femtosecond Ablation for SERS and Theranostics Applications.

Due to their high refractive index, record optical anisotropy and a set of excitonic transitions in visible range at a room temperature, transition metal dichalcogenides have gained much attention. Here, we adapted a femtosecond laser ablation for the synthesis of WSe nanoparticles (NPs) with diameters from 5 to 150 nm, which conserve the crystalline structure of the original bulk crystal. This method was chosen due to its inherently substrate-additive-free nature and a high output level.

Chromosomal Abnormalities in Miscarriages and Maternal Age: New Insights from the Study of 7118 Cases.

Chromosomal abnormalities of the embryo are the most common cause of first-trimester pregnancy loss. In this single-center study, we assessed the frequency and the spectrum of chromosomal abnormalities in miscarriages for each year of maternal age from 23 to 44. Cytogenetic data were obtained by conventional karyotyping of 7118 miscarriages in women with naturally conceived pregnancies.

Negative linear compressibility of molecular and ionic-molecular crystals.

The compressibility of crystalline tetrabromophthalic anhydride (TBPA) and 1-ethyl-3-methylimidazolium nitrate (EMN) was studied based on density functional theory including dispersion interactions at pressures below 1 GPa. It is found for the first time that EMN demonstrates negative linear compressibility (NLC) up to ∼0.15 GPa, whereas TBPA shows significant NLC at pressures higher than ∼0.

Green Light Activated Dual-Action Pt(IV) Prodrug With Enhanced PDT activity.

Light induced release of cisplatin from Pt(IV) prodrugs is a promising tool for precise spatiotemporal control over the antiproliferative activity of Pt-based chemotherapeutic drugs. A combination of light-controlled chemotherapy (PACT) and photodynamic therapy (PDT) in one molecule has the potential to overcome crucial drawbacks of both Pt-based chemotherapy and PDT via a synergetic effect. Herein we report green-light-activated Pt(IV) prodrug GreenPt with BODIPY-based photosentitizer in the axial position with an incredible high light response and singlet oxygen generation ability.

Mitochondrial Fragmentation as a Key Driver of Neurodegenerative Disease.

Mitochondrial form and function are intricately linked through dynamic processes of fusion and fission, and disruptions in these processes are key drivers of neurodegenerative diseases, like Alzheimer's. The inability of mitochondria to transition between their dynamic forms is a critical factor in the development of pathological states. In this paper, we focus on the importance of different types of mitochondrial phenotypes in nervous tissue, discussing how mitochondria in Alzheimer's disease are "stuck" in certain patterns and how this pattern maintains itself.

Destabilization of Glycosyl Cation by an Electron-Withdrawing Substituent at C-5 Makes Sialylation Reaction More α-Stereoselective.

Comparison of the reactivity of sialyl chlorides and bromides based on -acetylneuraminic acid (Neu5Ac) and its deaminated analogue (KDN) in reactions with MeOH and -PrOH without a promoter revealed that the acetoxy group at C-5 in a molecule of a sialic acid glycosyl donor can destabilize the corresponding glycosyl cation making the S1-like reaction pathway unfavorable. A change to the S2-like reaction pathway ensures preferential formation of the α-glycoside.

The association between underlying conditions, risk factors, risk markers, and post-COVID conditions ≥6 months after COVID-19: A systematic review.

Introduction: While various demographic factors and underlying medical conditions are associated with the development of post-COVID conditions within a month after SARS-CoV-2 infection, less is known about factors associated with post-COVID symptoms that persist for 6 months or more. The aim of this review was to determine the association between underlying conditions, other risk factors, health behaviors, and the presence of symptoms ≥6 months after COVID-19.

Methods: Studies reporting on post-COVID symptoms were searched in databases, including Medline, EMBASE, Global Health, PsycInfo, Scopus, CINAHL, Proquest, and WHO COVID-19 literature, from the beginning of the pandemic until November 2022.

The Novel Allele HLA-C*12:02:55 Identified by HLA-Typing of a Bone Marrow Donor.

The new HLA-C*12:02:55 allele showed one synonymous nucleotide difference compared to the HLA-С*12:02:02:01 allele in codon 134.

Novel Synonymous HLA-B*35:01:80 Allele Identified by Next-Generation Sequencing.

The new HLA-B*35:01:80 allele showed one synonymous nucleotide difference compared to the HLA-B*35:01:01:01 allele in codon 137.

Six Novel HLA Class I Alleles Detected in Inhabitants From the Russia.

Six novel HLA class I alleles were detected during the HLA typing process.

Characterisation of Eight Novel HLA-A Alleles From Bone Marrow Volunteers.

Identification of eight novel HLA-A alleles by next-generation sequencing.

HELMINTH EGGS FROM PACHYCROCUTA BREVIROSTRIS (CARNIVORA, HYAENIDAE) COPROLITES FROM TAURIDA CAVE (EARLY PLEISTOCENE, CRIMEA).

Twenty-seven Pachycrocuta brevirostris coprolites from Taurida Cave (Early Pleistocene) were studied. Eggs of parasitic worms were found in 6 of them (22.2%).

Assessing neonatal nurses: transitioning preterm infants to oral feeding - a multicenter cross-sectional study.

Background: In Egypt, approximately 10% of preterm deliveries occur between 32 and fewer than 37 weeks, leading to high neonatal intensive care unit (NICU) admissions. Preterm infants often face oral feeding difficulties due to immature development, which can lead to extended hospital stays and increased health risks.

Aim: To assess neonatal nurses' performance in terms of the transition to oral feeding in preterm infants, focusing on knowledge, practices, and attitudes.

A retrospective study on ruthenium-106 and strontium-90 eye-plaques treatment for retinoblastoma: 16-years clinical experience.

Purpose: To retrospectively evaluate the efficacy of plaque brachytherapy for the treatment of retinoblastoma.

Methods: We retrospectively reviewed the clinical records of 163 patients (186 eyes, 333 tumors) treated with brachytherapy (Ru or Sr plaques) for intraocular retinoblastoma between November 2007 and August 2023.

Results: Complete tumor control was achieved in 273 tumors (82%).

A comprehensive analysis of the impact of arsenic, fluoride, and nitrate-nitrite dynamics on groundwater quality and its health implications.

Groundwater contamination is a growing global concern. The objective of the present study is to assess the groundwater quality of Khairpur district, Sindh, Pakistan-a region which is emblematic of broad environmental and public health challenges prevalent in South Asian countries. The study also aims to comprehend the impact of arsenic (As), fluoride (F), and nitrate (NO) dynamics and its health implications.

Singlet oxygen presenting a higher detoxification potential on enrofloxacin than sulfate and hydroxyl radicals.

With the aid of radical and non-radical reactive species (RS), advanced oxidation processes can efficiently degrade emerging organic contaminants including antibiotics but may generate toxic transformation products (TPs). However, the detoxification capacity of popular RS has not been well elucidated. This study compared the detoxification of enrofloxacin (ENR) with three RS-dominated systems: O, SO+OH, OH.

Copper and zinc isotope fractionation during phototrophic biofilm growth.

Copper (Cu) and zinc (Zn) are two trace metals that exhibit both limiting and toxic effects on aquatic microorganisms. However, in contrast to good knowledge of these metal interactions with individual microbial cultures, the biofilm, complex natural consortium of microorganisms, remains poorly understood with respect to its control on Cu and Zn in the aquatic environments. Towards constraining the magnitude and mechanisms of Cu and Zn isotope fractionation in the presence of phototrophic biofilms composed of different proportion of diatoms, green algae and cyanobacteria, we studied long-term growth in a rotating annular bioreactor and quantified the uptake of metals and their isotope fractionation at environmentally-relevant Cu and Zn concentrations.