239,907 results match your criteria: "Russian Federation; Ural Federal University Named After the First President of Russia[Affiliation]"

The results of an investigation of an impact of the structure of recently synthesized bis(trifluoromethylsulfonyl)imide mono- and dicationic ionic liquids on their properties and behavior as lubricants for slippery liquid infused superhydrophobic coatings are presented for a wide temperature range. In this study, a new approach based on monitoring the surface tension of a liquid sessile droplet on top of a coating was exploited for the analysis of the evolution of the coating properties in prolonged contact with the liquid. It was found that the continuous contact with water flow results in slippery property degradation according to two different scenarios.

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The Orange Carotenoid Protein (OCP) is a unique water-soluble photoactive protein that plays a critical role in regulating the balance between light harvesting and photoprotective responses in cyanobacteria. The challenge in understanding OCP´s photoactivation mechanism stems from the heterogeneity of the initial configurations of its embedded ketocarotenoid, which in the dark-adapted state can form up to two hydrogen bonds to critical amino acids in the protein's C-terminal domain, and the extremely low quantum yield of primary photoproduct formation. While a series of experiments involving point mutations within these contacts helped us to identify these challenges, they did not resolve them.

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Purpose: To assess differences in safety and efficacy between 24 and 18 Fr pneumatic balloon dilators for percutaneous nephrolithotripsy (PCNL) of renal stones between 10 and 20 mm.

Methods: Patients were randomized to dilatation with a 24 Fr (Group A) versus 18 Fr (Group B) Ultraxx pneumatic dilator (Cook Medical). In all procedures percutaneous puncture was performed under ultrasound guidance.

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Three new manganese compounds on 5-(pyridin-2-yl)-3-phenyl-1,2,4-triazole (L) basis (HL)[MnBr]·HO (1), (HL)[MnCl] (2) and [MnLCl]·HO (3) have been synthesized and characterized in terms of their structure, photoluminescence (PL), and electroluminescence (EL) properties. Compounds 1 and 2 exhibit bright green luminescence ( ≈ 550 nm) with high quantum yields of 75.1 and 71.

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The current understanding of humoral immune response in cancer patients suggests that tumors may be infiltrated with diffuse B cells of extra-tumoral origin or may develop organized lymphoid structures, where somatic hypermutation and antigen-driven selection occur locally. These processes are believed to be significantly influenced by the tumor microenvironment through secretory factors and biased cell-cell interactions. To explore the manifestation of this influence, we used deep unbiased immunoglobulin profiling and systematically characterized the relationships between B cells in circulation, draining lymph nodes (draining LNs), and tumors in 14 patients with three human cancers.

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Hypoplasia of the upper jaw to one degree or another inevitably occurs in patients with cleft lip and palate. The most difficult task is to fix skeletal deformity of the upper jaw, especially the discrepancy between its transversal dimensions due to the high risks of recurrence after treatment. One of the key stages of rehabilitation of this group of patients is orthodontics and surgical treatment aimed at eliminating functional and aesthetic problems of the dental system.

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The review considers methods of manufacturing photopolymerizable compositions for bone tissue repair, as well as polymers and photoinitiators used for this purpose. Their physical and biological properties are described. Examples of light-curing compositions used in biomedicine and tissue engineering are given.

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Objective: Systematic review of literature on the pre-clinical studies of dental implantation in different models by finding out data about primary stability.

Materials And Methods: PubMed, NCBI, Wiley Online Library, MBPI, Elibrary systems were used for search.

Results: Based on the literature review of the described animal species dogs have the most similar bone structure to humans but their usage is complicated by ethics and law reasons.

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Frey syndrome is a late complication after parotidectomy and represents an aberrant regeneration of the auricular nerve after its damage. The degree of manifestation can vary from minor hyperemia to the inability to eat in public places. As it turned out, the etiology of this syndrome is much broader than we might have assumed, as evidenced by the data of domestic and foreign literature.

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The Aim Of The Study: Was to determine the risk factors for pulp necrosis and external inflammatory resorption in children with permanent teeth trauma.

Materials And Methods: The study involved 68 pediatric patients aged 6 to 16 years (mean age 10.9±2.

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Objective: Evaluation of the effectiveness of vestibuloplasty according to microhemodynamics and oxygenation in the mucous membrane of the alveolar ridge.

Materials And Methods: To achieve this goal, a clinical and functional study was carried out in the mucous membrane of the alveolar ridge after vestibuloplasty in 80 patients (35 men and 45 women) aged from 18 to 65 years, average age 41.5±1.

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Objective: Study on the impact of medical wound dressing compositions on reference strains of microorganisms in vitro conditions.

Materials And Methods: The study compared the antimicrobial activity of three types of dressing materials (DM): iodoform gauze bandage, DM with furagin and sodium alginate, DM from hydrogel with dimexide and silver nitrates. Gauze bandage with chlorhexidine was used as a control.

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The Study Aims: To evaluate and compare the growth of gingiva around dental implants following the use of collagen matrices and connective tissue grafts (CTG).

Materials And Methods: The study included 80 study participants, who were divided into four groups based on the type of material used to enhance gingival thickness. Two groups utilized collagen matrices, Fibro-Gide and FibroMatrix as materials, while the other two groups utilized CTG obtained from the hard palate or tubercle area of the maxilla as controls.

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The Purpose: Of the study was to assess oral microbiocenosis changes in participants of microgravity modeling in a control group and using prophylaxis in the form of a probiotic supplement with 1.0·10 CFU of strain in one lozenge and a dairy product containing not less than 1·10 CFU of s strain in one gram.

Materials And Methods: The study included 15 participants aged 25-40 years from the "Dry Immersion-2018" experiment.

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Objective: To analyze the dynamics of the condition of the mucous membrane in patients with metabolic syndrome at the stage of preparation for dental prosthetics using dental implants.

Material And Methods: 255 patients (151 women and 104 men) aged from 35 to 65 years were examined. 3 groups were formed: 2 study groups and a comparison group.

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The Aim Of The Study: To study the expression of NOD receptors of immunotropic periodontal tissue cells in patients with aggressive periodontitis before and after complex treatment.

Materials And Methods: 15 patients aged 22 to 36 years with aggressive periodontitis were examined before and 21 days after the start of complex treatment. 15 patients with fibroids of the oral mucosa without signs of inflammation served as controls.

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The Aim Of The Study: Was to elaborate and assess biocompatible compositions based on oligocarbonate methacrylate filled with hydroxyapatite.

Materials And Methods: The manufacturing methods of the compositions are considered, and their polymerization ability, strength and elastic properties are evaluated.

Results: The highest values of hardness and elasticity were found in the composition containing 0.

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Colonial invertebrates consist of iterative semi-autonomous modules (usually termed zooids) whose lifespan is significantly shorter than that of the entire colony. Typically, module development begins with budding and ends with degeneration. Most studies on the developmental biology of colonial invertebrates have focused on blastogenesis, whereas the changes occurring throughout the entire zooidal life were examined only for a few tunicates.

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Movement disorders such as Parkinson's disease (PD) and cervical dystonia (CD) are associated with abnormal neuronal activity in the globus pallidus internus (GPi). Reduced firing rate and presence of spiking bursts are typical for CD, whereas PD is characterized by high frequency tonic activity. This research aims to identify the most important pallidal spiking parameters to classify these conditions.

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The grafting of a -(CH)PR moiety on an NHC ligand backbone in the Mn(I) complex [Cp(CO)Mn(IMes)] followed by double deprotonation opens a route to bidentate ligands with extreme electron-donating character. Such remarkable electronic properties can even allow intramolecular sp C-H functionalization in typically inert square-planar Rh(I) dicarbonyl complexes.

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The serotonergic raphe magnus (RMg) and dorsal raphe (DR) nuclei are crucial pain-regulating structures, which nociceptive activity is shown to be altered in gut pathology, but the underlying neuroplastic changes remain unclear. Considering the importance of 5-HT1A receptors in modulating both pain and raphe neuronal activity, in this study, we aimed to determine whether 5-HT1A-dependent visceral and somatic nociceptive processing within the RMg and DR is modified in postcolitis conditions. In anaesthetised male Wistar rats, healthy control and recovered from TNBS-induced colitis, the microelectrode recordings of RMg and DR neuron responses to noxious colorectal distension (CRD) or tail squeezing (TS) were performed prior and after intravenous administration of 5-HT1A agonist, buspirone.

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Machine learning recognition of hybrid lead halide perovskites and perovskite-related structures from X-ray diffraction patterns.

Nanoscale

January 2025

Laboratory of New Materials for Solar Energetics, Department of Materials Science, Lomonosov Moscow State University, 1 Lenin Hills, 119991, Moscow, Russia.

Identification of crystal structures is a crucial stage in the exploration of novel functional materials. This procedure is usually time-consuming and can be false-positive or false-negative. This necessitates a significant level of expert proficiency in the field of crystallography and, especially, requires deep experience in perovskite-related structures of hybrid perovskites.

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Acute stroke is the second leading cause of death and the third leading cause of disability in the world. Ischemic stroke (IS) the most common type of stroke. In acute cerebral ischemia, damage to the brain tissue is complex and includes blood-brain barrier (BBB) dysfunction, neuroinflammation, oxidative stress, activation of intracellular and extracellular signaling pathways, expression of neurotoxic agents, excitotoxicity, and apoptosis.

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Objective: To evaluate the features of primary and recurrent stroke in men aged 18-50 years with atherothrombotic, lacunar, and cardioembolic subtypes.

Material And Methods: A total of 125 men with primary and recurrent stroke were included in the study. The main vascular risk factors and lifestyle-related risk factors were assessed.

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