7,923 results match your criteria: "Belarus; Belarusian State University[Affiliation]"

Rapid humification of cotton stalk catalyzed by coal fly ash and its excellent cadmium passivation performance.

Environ Sci Pollut Res Int

August 2024

School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, People's Republic of China.

Due to industrialization, soil heavy metal pollution is a growing concern, with humic substances (HS) playing a pivotal role in soil passivation. To address the long duration of the compost humification problem, coal fly ash (CFA) in situ catalyzes the rapid pyrolysis of the cotton stalk (CS) to produce HS to address Cd passivation. Results indicate that the highest yield of humic acid (HA) (8.

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Impact of microplastics on microbial community structure in the Qiantang river: A potential source of NO emissions.

Environ Pollut

October 2024

Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou, 310015, China. Electronic address:

Article Synopsis
  • This study examined how microplastics (MPs) are distributed and how they affect bacterial communities in the Qiantang River.
  • It found that the diversity of bacteria on MPs was lower than in natural water but higher than on natural substrates, and certain bacterial groups dominated the biofilm on MPs.
  • The presence of MPs was shown to disrupt the denitrification process and promote nitrous oxide (NO) emissions, particularly with polyethylene terephthalate (PET), indicating that MPs can influence microbial activity and environmental nitrogen cycles.
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Article Synopsis
  • Long COVID is associated with serious health complications, including severe lung issues and kidney injury, affecting a significant portion of patients.
  • Dental stem cells (DSCs) have potential in regenerative medicine and may help treat tissues affected by COVID-19 due to their unique properties and regenerative capabilities.
  • Research is focusing on the beneficial effects of DSC-derived extracellular vesicles (DSC-EVs) in managing COVID-related tissue damage, indicating a promising area for future therapies.
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The large inner surface of porous silicon (pSi) not only provides unique opportunities for introducing various foreign materials into the open pores, but is also responsible for a lot of processes during the pSi cathode polarization. PSi surface and contact effects are considered in the article. The space charge layer induced by both the surface states and the double electrical layer in the solution is shown to have a decisive influence on the electrical conductivity of the silicon skeleton in the pSi layer.

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We studied the effects of visceral obesity induced by a high-calorie diet and health-improving variants of its correction on morphological characteristics of the muscle tissue in male Wistar rats. At stage I, the rats received standard (StD) or high-calorie diet (HCD) for 8 weeks. At stage II, the animals were divided into the following subgroups: no correction (StD and HCD), switching from HCD to StD (HCD/StD) and/or connection of physical activity in the form of treadmill running (StD+running, HCD+running, and HCD/StD+running) for the next 8 weeks.

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Background: Resistance training is often a part of the routine training regimen for competitive swimmers. However, due to the variety of resistance training methodology, the results can be inconsistent and sometimes unsatisfactory. Clear recommendations are still lacking at present.

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Using the method of electron paramagnetic resonance spectroscopy, we showed that NO production decreases by 60% (p<0.05) in the region located rostral to the spinal cord injury 7 days after combined injury to the brain and spinal cord. At the same time, NO production did not change in the site of spinal cord injury and caudal to the injury.

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The spread of multidrug-resistant mycobacterium strains requires the development of new approaches to combat diseases caused by these pathogens. For that, photodynamic inactivation (PDI) is a promising approach. In this study, a tricarbocyanine (TCC) is used for the first time as a near-infrared (740 nm) activatable PDI photosensitizer to kill mycobacteria with deep light penetration.

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Several risk factors contribute to the development of Alzheimer's disease (AD), including genetics, metabolic health, cardiovascular history, and diet. It has been observed that women appear to face a higher risk of developing AD. Among the various hypotheses surrounding the gender disparity in AD, one pertains to the potential neuroprotective properties of estrogen.

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The optimization of material interfaces is crucial for the performance and longevity of optoelectronic devices. This study focuses on 1,3,5-tris(1-phenyl-1-benzimidazol-2-yl)benzene (TPBi), a key component in perovskite devices known for its efficient charge transfer capabilities. We investigate the TPBi-(PEA)PbI heterostructure interfaces to enhance device durability by optimizing interfacial properties.

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Correction to: An Alternative Photothrombotic Model of Transient Ischemic Attack.

Transl Stroke Res

August 2024

Laboratory of Molecular Neuroscience, Academy of Biology and Biotechnology, Southern Federal University, 194/1, Stachki Ave, Rostov‑On‑Don, 344090, Russia.

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The work aims to analyze the associations of polymorphic variants of the PRL and BLG genes with resistance and susceptibility to mastitis in Holstein cows. The experimental study consisted of the selection of biomaterial samples from 250 heads of Holstein cows aged 3 years divided into two groups (healthy and with a confirmed diagnosis of mastitis). The determination of animal genotypes was carried out using polymerase chain reaction and restriction fragment length polymorphism.

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Photothermal switch by gallic acid-calcium grafts synthesized by coordination chemistry for sequential treatment of bone tumor and regeneration.

Biomaterials

January 2025

Center for Orthopedic Science and Translational Medicine, Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China; Shanghai Trauma Emergency Center, Orthopedic Intelligent Minimally Invasive Diagnosis & Treatment Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China. Electronic address:

The residual bone tumor and defects which is caused by surgical therapy of bone tumor is a major and important problem in clinicals. And the sequential treatment for irradiating residual tumor and repairing bone defects has wildly prospects. In this study, we developed a general modification strategy by gallic acid (GA)-assisted coordination chemistry to prepare black calcium-based materials, which combines the sequential photothermal therapy of bone tumor and bone defects.

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Background: The role of the climate regarding atopic dermatitis (AD) in infants is still unclear. This study aimed to determine the relationship between meteorological conditions and the incidence of early AD.

Methods: The study was conducted using a retrospective design.

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Co-observation of germline pathogenic variants in breast cancer predisposition genes: Results from analysis of the BRIDGES sequencing dataset.

Am J Hum Genet

September 2024

Population Health Program, QIMR Berghofer Medical Research Institute, Brisbane, QLD 4006, Australia; Faculty of Medicine, The University of Queensland, Brisbane, QLD 4072, Australia. Electronic address:

Article Synopsis
  • * Analysis of data from over 55,000 breast cancer patients showed that co-observation of variants in BRCA1, BRCA2, and PALB2 with other breast cancer genes occurred less frequently than expected, suggesting a potential correlation with pathogenicity.
  • * The findings indicate that identifying a variant of uncertain significance alongside a known pathogenic variant supports evidence against the variant's pathogenicity, which could improve variant classification in clinical settings and for other genetic conditions.
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Type 2 diabetes mellitus (T2DM) is accompanied by halogenative stress resulting from the excessive activation of neutrophils and neutrophilic myeloperoxidase (MPO) generating highly reactive hypochlorous acid (HOCl). HOCl in blood plasma modifies serum albumin (Cl-HSA). We studied the formation of neutrophil extracellular traps (NETs) in the whole blood and by isolated neutrophils under the action of Cl-HSA.

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Importance: Millions of people take vitamin K antagonists (VKAs). Some people who need urgent surgical procedures require rapid VKA reversal to prevent excessive intraoperative bleeding.

Objective: To evaluate the hemostatic noninferiority of an investigational 4-factor prothrombin complex concentrate (4F-PCC) to a control 4F-PCC for rapid VKA reversal before urgent surgery.

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Article Synopsis
  • * This study explores reactions between salicylic aldehydes and a specific monoterpene derivative, resulting in various chiral polycyclic products, with some being novel ring structures.
  • * The results indicate that the type of acid catalyst used and the reaction conditions significantly influence the product outcomes, and the study includes detailed mechanistic insights supported by experimental and computational methods.
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Background And Aim: With the emergence of severe acute respiratory syndrome-related coronavirus (SARS-CoV-2), antiviral drug development has gained increased significance due to the high incidence and potentially severe complications of the resulting coronavirus infection. Heterocycle compounds, acting as antimetabolites of DNA and RNA monomers, rank among the most effective antiviral drugs. These compounds' antiviral effects on various SARS-CoV-2 isolates, as found in existing data collections, form the basis for further research.

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We report a case of a man in his 70s who developed haemoptysis 3 days after commencing sildenafil. Before postulating a potential connection between sildenafil use and haemoptysis, it is important to rule out potential other causative factors and comorbidities. The patient suffers from multiple medical conditions and takes various medications.

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An Alternative Photothrombotic Model of Transient Ischemic Attack.

Transl Stroke Res

July 2024

Laboratory of Molecular Neuroscience, Academy of Biology and Biotechnology, Southern Federal University, 194/1 Stachki Ave, Rostov-On-Don, 344090, Russia.

Animal models mimicking human transient ischemic attack (TIA) and cerebral microinfarcts are essential tools for studying their pathogenetic mechanisms and finding methods of their treatment. Despite its advantages, the model of single arteriole photothrombosis requires complex experimental equipment and highly invasive surgery, which may affect the results of further studies. Hence, to achieve high translational potential, we focused on developing a TIA model based on photothrombosis of arterioles to combine good reproducibility and low invasiveness.

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Steroidal 21-imidazolium salt derivatives: Synthesis and anticancer activity.

Steroids

October 2024

Laboratory of Organic Synthesis, Institute of Chemistry, Moldova State University, Academiei Str., 3, MD-2028 Chișinău, Moldova. Electronic address:

Nitrogen-containing steroids are known as prostate cancer therapeutics. In this work, a series of pregnane derivatives bearing an imidazolium moiety were synthesized using Δ-20-ketones as starting material. An improved approach for the construction of the 20-keto-21-heterocycle-substituted fragment involved the rearrangement of 16,17-epoxides with HCl, followed by reaction of the formed α-chloroketone with 1-substituted imidazoles.

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Self-Healing and Recyclable Polyurethane/Nanocellulose Elastomer Based on the Diels-Alder Reaction.

Polymers (Basel)

July 2024

International Joint Institute of Advanced Coating Technology, Taizhou University, Taizhou 318000, China.

Article Synopsis
  • The research focuses on developing self-healing and recyclable polyurethane elastomers amid the fossil fuel energy crisis, using a unique cross-linking agent with furan groups based on Diels-Alder chemistry.
  • Cellulose nanofibers (CNFs) were incorporated to enhance the mechanical properties of the elastomer, yielding composites with better strength based on tensile testing.
  • The reversible nature of the covalent bonds in the elastomer allows for recycling at high temperatures and offers repair capabilities for damaged coatings, highlighting its potential use in metal protection applications.
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Alkaloid-based urea derivatives were produced with high yield through the reaction of anabasine and cytisine with isoxazolylphenylcarbamates in boiling benzene. Their antitumor activity, in combination with the commonly used five anticancer drugs, namely cyclophosphane, fluorouracil, etoposide, cisplatin, ribomustine with different mechanisms of action, was investigated. Based on the quantum chemical calculations data and molecular docking, hypotheses have been put forward to explain their mutual influence when affecting C6 rat glioma model cells.

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Monitoring the processes inside crystalline materials under their operating conditions is of great interest in optoelectronics and scientific instrumentation. Early defect detection ensures the proper functioning of multiple crystal-based devices. In this study, a combination of acoustic emission (AE) sensing and cross-polarization imaging is proposed for the fast characterization of the crystal's structure.

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