85 results match your criteria: "Ufa University of Science and Technology[Affiliation]"

Implementation of machine learning (ML) techniques in materials science often requires large data sets. However, a proper choice of features and regression methods allows the construction of accurate ML models able to work with a relatively small data set. In this work, an extensive, although still limited, experimental data set of corrosion-related properties of Zn-based alloys used in biomedicine was created.

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This paper examines the quantitative structure-inhibitory activity relationship of 15-lipoxygenase (15-LOX) in sets of 100 homo- and heterocyclic compounds using GUSAR 2019 software. Statistically significant valid models were built to predict the IC50 parameter. A combination of MNA and QNA descriptors with three whole molecular descriptors (topological length, topological volume and lipophilicity) was used to develop 18 statistically significant, valid consensus QSAR models.

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Plant growth-promoting endophytic bacteria (PGPEB), producing auxins, are offered for a promising eco-friendly crop production. Precise bacterial strain selection is essential to ensure consistent and effective plant growth and resilience. Creating a model for the optimal dose-dependent interactions between PGPEB and hosts is necessary for understanding the mechanisms of high-precision selection of the inoculant composition to enhance bacterial preparations' efficacy.

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Article Synopsis
  • A study of 4,882 patients explored the long-term cardiovascular outcomes of COVID-19 in relation to sex and variant type (Alpha, Delta, Omicron), revealing specific trends over an 18-month follow-up.
  • Results showed that men had significantly higher cardiovascular mortality rates compared to women during the Delta wave, while no significant differences were observed during the Alpha and Omicron variants.
  • The study highlights discrepancies in cardiovascular outcomes and demographic factors between the different COVID-19 variants, indicating a need for more focused research on long-term effects based on sex and variant type.
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The general trend of increasing life expectancy will consistently drive the demand for orthopedic prostheses. In addition to the elderly, the younger population is also in urgent need of orthopedic devices, as bone fractures are a relatively common injury type; it is important to treat the patient quickly, painlessly, and eliminate further health complications. In the field of traumatology and orthopedics, metals and their alloys are currently the most commonly used materials.

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  • Copper sulfide is a versatile material with applications in solar cells, plasmonics, and energy storage devices, and this study focuses on its thermoelectric properties.
  • The research investigates nanocomposite copper sulfide comprised of monoclinic and tetragonal phases, revealing that synthesized particles average around 373 nm in size.
  • The findings show that LiCuS has impressive electronic conductivity and power factor, and achieves a high thermoelectric figure of merit (ZT = 1.76) at elevated temperatures, indicating its potential as an effective thermoelectric material.
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In this paper, the stabilization conditions, structure, and properties of possible vortex-like inhomogeneities, including k-skyrmions= 0, 1, 2, 3, 4, in a uniaxial multilayer disk with a columnar defect in the center are investigated based on micromagnetic modeling. Their stability diagrams depending on the Dzyaloshinskii-Moriya interaction, the magnitude of magnetic anisotropy and the defect parameters are determined. New types of vortex-like inhomogeneities that can arise in such samples are found.

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The arginine vasopressin receptor gene (AVPR1A) is one of the genes affecting mental processes. The aim of this study was to search for associations of microsatellite locus RS1, which is related to the AVPR1A expression level, with the level of hormones of the anterior pituitary gland and personality traits. The study sample included Yakut men aged 18-26 years (n = 121).

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Named entity recognition is a critical task in the electronic medical record management system for rehabilitation robots. Handwritten documents often contain spelling errors and illegible handwriting, and healthcare professionals frequently use different terminologies. These issues adversely affect the robot's judgment and precise operations.

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The chirality of biopolymers remains one of the mysteries of Life. For such objects, the phenomenon of supramolecular chirality (SMC) is vital. Enantiomers can be recognized by the adsorption on surfaces with SMC.

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Viral diseases of potatoes are among the main problems causing deterioration in the quality of tubers and loss of yield. The growth and development of potato plants largely depend on soil moisture. Prevention strategies require comprehensive protection against pathogens and abiotic stresses, including modeling the beneficial microbiome of agroecosystems combining microorganisms and immunostimulants.

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Nowadays, biodegradable metals and alloys, as well as their corrosion behavior, are of particular interest. The corrosion process of metals and alloys under various harsh conditions can be studied via the investigation of corrosion atom adsorption on metal surfaces. This can be performed using density functional theory-based simulations.

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The present work investigated the effects of different doses of biochar (2.5%, 5%, 10%), a by-product of the pyrolysis of woody biomass, on the growth of oat plants (Avena sativa L., cv "Danko") grown under different crude oil concentrations (0.

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Amyotrophic lateral sclerosis (ALS) is a sporadic disease in most of the cases; in 10-15% of cases genetic forms are recorded. A genetic form of ALS associated with the mutation in the gene (ALS19) has been reported in 2013. A protein encoded by the is probably involved in ubiquitous component of the pathogenesis of ALS.

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The bacterial infection and poor osseointegration of Ti implants could significantly compromise their applications in bone repair and replacement. Based on the carrier separation ability of the heterojunction and the redox reaction of pseudocapacitive metal oxides, we report an electrically responsive TiO-SnO-RuO coating with a multilayered heterostructure on a Ti implant. Owing to the band gap structure of the TiO-SnO-RuO coating, electron carriers are easily enriched at the coating surface, enabling a response to the endogenous electrical stimulation of the bone.

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The article examines the key aspects of the development of Russian healthcare through the prism of the implementation of the National Project «Healthcare»: improving the quality of life of Russians through the search for effective mechanisms; obtaining a social effect through the use of new state capabilities and existing potential. Currently, ensuring the availability of medical care for residents of remote areas, including through the development of preventive measures and the use of modern diagnostic tools, is of paramount importance for maintaining the population and ensuring the well-being of citizens. In conclusion, it is concluded that over the years of the implementation of regional health development projects, significant positive results have been achieved, which have allowed a positive impact on the effectiveness and quality of medical care, and improve the overall morbidity of the population.

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According to four field experiments, after the inoculation of L. cultivar Ufimskaya with the commercial strain 26D and the promising strain 10-4, it was found that inoculation with 10-4 improved seed productivity (SP) by 31-41% per plant, but only in dry years. In contrast, all 4 years of inoculation with 26D were ineffective or neutral.

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The last two decades have witnessed significant progress in the development of severe plastic deformation techniques to produce ultrafine-grained materials with new and superior properties. This review examines works and achievements related to the low-temperature superplasticity of ultrafine-grained aluminum alloys. The examples are provided of the possibility to observe low-temperature superplasticity in aluminum alloys at temperatures less than 0.

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The paper examines ferromagnetic films with strong uniaxial anisotropy of the 'easy plane' type, in which vortex-like inhomogeneities can arise in the presence of artificially created perforations. A universal approach has been developed that makes it possible to reduce the problem of calculating demagnetizing fields in a film of arbitrary thickness to the simplest case, when the film thickness is large. It has been shown that the influence of demagnetizing fields causes the magnetization vector to necessarily move out of the sample plane, and the spatial distribution of magnetization corresponding to this effect has been studied.

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New binuclear copper(II) [Cu(II)] tetraligand complexes (six examples) with sulfanylpyrazole ligands were synthesized. Electron spin resonance (ESR) studies have shown that in solution the complexes are transformed to the mononuclear one. Fungicidal properties against Candida albicans were found for the Cu complexes with benzyl and phenyl substituents.

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Carrier transport in bulk and two-dimensional Zn(V,Nb,Ta)N ternary nitrides.

Nanoscale

May 2024

The Laboratory of Metals and Alloys Under Extreme Impacts, Ufa University of Science and Technology, Ufa 450076, Russia.

Density functional theory-based simulations are applied to study the electronic structures, carrier masses, carrier mobility and carrier relaxation times in bulk and two-dimensional (2D) Zn(V,Nb,Ta)N ternary nitrides. Bulk Zn(V,Nb,Ta)N possess moderate band gap sizes of 2.17 eV, 3.

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The search for promising carrier blocking layer materials with high stability, including resistance to surface inhibition by environmental molecules that cause a drop in carrier mobility, is critical for the production of tandem solar cells. Based on density functional theory calculations, the reaction of atmospheric gases, including N, CO, NH, NO, and NO, with three promising Zn(V, Nb, Ta)N monolayers is discovered. The results suggest the chemical adsorption of NH and physical adsorption of NO and NO.

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Gene pool preservation across time and space In Mongolian-speaking Oirats.

Eur J Hum Genet

September 2024

Estonian Biocentre, Institute of Genomics, University of Tartu, Riia 23B, 51010, Tartu, Estonia.

The Oirats are a group of Mongolian-speaking peoples residing in Russia, China, and Mongolia, who speak Oirat dialects of the Mongolian language. Migrations of nomadic ethnopolitical formations of the Oirats across the Eurasian Steppe during the Late Middle Ages/early Modern times resulted in a wide geographic spread of Oirat ethnic groups from present-day northwestern China in East Asia to the Lower Volga region in Eastern Europe. In this study, we generate new genome-wide and mitochondrial DNA data for present-day Oirat-speaking populations from Kalmykia in Eastern Europe, Western Mongolia, and the Xinjiang region of China, as well as Issyk-Kul Sart-Kalmaks from Central Asia, and historically related ethnic groups from Altai, Tuva, and Northern Mongolia to study the genetic structure and history of the Oirats.

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Microstructure Evolution during High-Pressure Torsion in a 7xxx AlZnMgZr Alloy.

Materials (Basel)

January 2024

Department of Materials Physics, ELTE Eötvös Loránd University, Pázmány Péter Sétány 1/A, 1117 Budapest, Hungary.

A homogenized, supersaturated AlZnMgZr alloy was processed via severe plastic deformation (SPD) using a high-pressure torsion (HPT) technique for different revolutions at room temperature to obtain an ultrafine-grained (UFG) microstructure. The microstructure and mechanical properties of the UFG samples were then studied using transmission electron microscopy (TEM), differential scanning calorimetry (DSC), and tensile and hardness measurements. The main purpose was to study the effect of shear strain on the evolution of the microstructure of the investigated alloy.

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Titanium alloys have high specific strength and corrosion resistance, which have promising applications in industry. However, the machinability of titanium alloys is limited due to their crystal lattice and physical properties. Thus, in recent years, the superplastic forming of titanium alloys has been intensively developing, in particular, forming at low temperatures and/or high strain rates.

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