Повышение износостойкости резьбового соединения стальных насоснокомпрессорных труб при нанесении минерального покрытия

Кислов С. В.; Кислов В. Г.; Балаш П. В.; Сказочкин А. В.; Г. Г. Бондаренко; А. Н. Тихонов

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Повышение износостойкости резьбового соединения стальных насоснокомпрессорных труб при нанесении минерального покрытия

Нефтегазовое дело. 2015. № 4. С. 231–254.

Кислов С. В., Кислов В. Г., Балаш П. В., Сказочкин А. В., Bondarenko G., Tikhonov А.

Research target: Construction Mechanics and Mechanical Engineering Effective Natural Resource Management

Priority areas: engineering science

Language: Russian

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Keywords: threaded joint wear resistance mineral coating резьбовое соединение износостойкость минеральное покрытие

Perovskite nanoparticles Cs4PbBr6 and CsPbBr3: synthesis, analysis and peculiar optical properties

Гущина В. А., / Series chemrxiv-2023-vpzhz-v2 "ChemRxiv". 2023.

All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are being intensively studied due to their unique properties and wide range of applications; however, however, the nature of their optical properties is not yet fully understood due to the difficulty of synthesis of singlephase nanoparticles. In this article we describe the features of the synthesis of single-phase particles ...

Added: May 14, 2026

Persistent illegal sturgeon fishing in the Caspian Sea

Ermolin I., Suvorkov P., Conservation Biology 2026 No. e70300 P. 1–10

Illegal, unreported, and unregulated (IUU) fishing driven by artisanal small-scale fisheries is a critical threat to global biodiversity and is exemplified by the commercial extinction of Caspian sturgeons (Acipenser and Huso). A key knowledge gap persists regarding the scale and behavioral dynamics of these operations.We tested the hypothesis that persistent high-volume sturgeon poaching is sustained ...

Added: April 25, 2026

LSTM-модель потребления тепловой энергии в многоэтажном жилом здании

Ершов И. А., Системная инженерия и инфокоммуникации 2025 № 4 С. 11–14

The heat consumption of residential buildings is a stochastic series. It is necessary for the design of thermal energy regulators the creation of a neural network model. In the paper, the model is carried out based on Long Short-Term Memory (LSTM). The high accuracy of reproducing the series was achieved by training the model on ...

Added: April 22, 2026

Ising models on the hydrogen peroxide and other lattices

Qin X., Deng Y., Shchur L. et al., / Series arXiv "math". 2026. No. 2603.02962.

We perform a Monte Carlo analysis of the Ising model on many three-dimensional lattices. By means of finite-size scaling we obtain the critical points and determine the scaling dimensions. As expected, the critical exponents agree with the three-dimensional Ising universality class for all models. The irrelevant field, as revealed by the correction-to-scaling amplitudes, appears to ...

Added: April 20, 2026

Algorithmic overlaps as thermodynamic variables: from local to cluster Monte Carlo dynamics in critical phenomena

Pilé I., Deng Y., Shchur L., / Series arXiv "math". 2026. No. 2604.10254.

We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Svendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for two models in different universality classes: the Ising model and the Potts model with three components. The overlap of two ...

Added: April 20, 2026

The partitioning of mobile fractions of chemical elements in the mineral loamy soils during natural regeneration after plowing in Western Russia

Enchilik P. R., G.V.Klink, Semenkov I. N., Science of the Total Environment 2025 Vol. 998 Article 180219

Natural regeneration of forest soils affected by agricultural practices is a common phenomenon in many regions worldwide, particularly in boreal ecosystems. Affecting soil quality, the partitioning of extractable fractions of heavy metals and metalloids (HMMs) is not studied during natural regeneration. The following stages of natural regeneration after plowing have been identified in the Smolenskoye ...

Added: April 19, 2026

Прогнозирование долговечности элементов шасси беспилотных транспортно-технологических средств с учётом влияния жесткостных параметров несущей системы

Левенков Я. Ю., Чичекин И. В., Вдовин Д. С. et al., Труды НАМИ 2025 № 1 (300) С. 17–30

Введение (постановка задачи и актуальность). В настоящее время широкое распространение получило использование автономных мобильных беспилотных транспортно-технологических средств (БТТС) при выполнении работ в зонах с вредными и опасными факторами. Также данные машины могут быть использованы для выполнения поисково-спасательных работ, доставки грузов в труднодоступные районы и иных подобных задач. Поэтому к таким БТТС предъявляются повышенные требования к ...

Added: April 16, 2026

The role of resource scarcity in shaping the green energy mix in the largest rare-earth metal trading nations

Barut A., Proskuryakova L. N., Yakutkina V. et al., Renewable Energy 2026 Vol. 267 Article 125736

The global demand for rare earth metals (REM) has exceeded the global supply, exacerbating the deficit of these resources for wind turbines, solar panels, electric vehicles, and nuclear reactors. The largest REM exporting and importing countries have the power to influence energy transition in their own countries and around the world. This study analyzes the ...

Added: April 8, 2026

Experimental Geophysical Detection of Spatial and Temporal Variability of Urban Soil Properties

S. S. Bricheva, P. M. Shilov, Yurchenko A. P. et al., Eurasian Soil Science 2025 Vol. 58 Article 74

The high variability of properties in urban soils and the abundance of anthropogenic inclusions that interfere with the propagation of electromagnetic fields are the reasons why they are seldom studied by geophysics. At the same time, geophysics is an efficient and fast way to diagnose soil structure and dynamics without affecting the functioning of the ...

Added: March 26, 2026

Усилия в связях якорной системы раскрепления плавучего объекта при воздействии на него волн цунами

Беляев Н. Д., Лебедев В. В., Нуднер И. С. et al., Гидротехническое строительство 2025 № 11 С. 50–58

This paper presents a description of the experimental methodology and the results of experiments on the physical modeling of the interaction of long tsunami-type waves with an anchored structure. The forces in the mooring system connections under wave action are assessed. The obtained results are analyzed. Conclusions are drawn regarding the nature of the force ...

Added: March 25, 2026

Study of Tool Actuation Frecuency on the Basis of Bimetallic Microactuator

Карцев А. И., Physics of Metals and Metallography 2025 Vol. 125 No. 14 P. 1935–1939

The problem of the maximum oscillation frequency of composite bimetallic microactuators excited by thermal pulses has been theoretically investigated. Both traditional bimetallic composites made of metals and alloys with different coefficients of thermal expansion and composites in which one of the layers is made of a mechanically pre-stressed shape memory alloy (SMA) and the other ...

Added: March 16, 2026

Идентификация модели материала по данным испытаний на растяжение плоских образцов с учётом неоднородности деформации

Mikolaenko V., Конюшенко М. Н., Стулков Л. Д., Механическое оборудование металлургических заводов 2025 № 2(25) С. 23–30

Uniaxial tensile testing of flat specimens under superplastic conditions is widely used to determine the deformation behavior of materials. However, the standard interpretation of the results relies on the hypothesis of an ideal uniaxial stress state and often fails to account for the influence of specimen geometry and material flow from the gripping zones to ...

Added: March 5, 2026

Программные инструментальные средства для разработки мероприятий по снижению брака серийного производства

Yasnitsky L., Голдобин М. А., Мезенцев А. С., Прикладная математика и вопросы управления 2025 № 2 С. 99–116

Представлен обзор современных методов и основанных на них программных инструментах, применяемых для математического моделирования серийных производственных процессов с целью снижения брака и повышения качества производимых изделий. Перечисляются группы работ, нацеленных на обнаружение и классификацию дефектов, работ, в которых решаются задачи прогнозирования образования дефектов и определения значимости параметров, работ направленных на поиск оптимального сочетания технологических параметров изготовления изделий, ...

Added: February 15, 2026

Vulnerable sides of cities aiming for carbon neutrality: contribution of wastewater treatment plants and landfill sludge disposal to greenhouse gas emissions

Dregulo A., Environmental Science and Pollution Research 2026 Vol. 33 No. 8 P. 3252–3265

The present study focuses on greenhouse gas emissions from wastewater treatment and sewage sludge disposal at landfill. Traces of ammonium, dihydrosulfide, phenol, formaldehyde, various hydrocarbons, and mercaptans have been identified. The dynamics of these gases are especially intense during the purification process from grids to aerotanks. Methane concentrations fluctuated more than sixfold in the wastewater ...

Added: February 10, 2026

Invariants of Sochava’s Geosystem as a Basis for Landscape Mapping

A. S. Baybar, M. Yu. Puzachenko, R. B. Sandlersky, Geography and Natural Resources 2025 Vol. 46 No. S1 P. S15–S22

This article presents a methodology for landscape mapping based on the integration of long-term series of multispectral data and morphometric characteristics of the relief for various hierarchical levels. Using the example of the Central Forest Reserve and its adjacent territory, where both indigenous and anthropogenically modified geosystems are combined, it is shown that the identification ...

Added: January 14, 2026

On the possibility of minimizing wear of the “wheel-rail” system using ultrafine mineral powders in combination with electric spark hardening

Skazochkin A. V., Bondarenko G., Kislov S. V. et al., Письма о материалах 2025 Vol. 15 No. 4 P. 277–283

The article presents the results of comparative studies of wear resistance of railway wheel samples with surface modification by ultrafine mineral powders and without modification. The tested samples are made of standard railway wheels made of CT2sp steel (ordinary quality carbon steel — an analogue of Q215 steel (China), A192 steel (USA), and RSt34–2 steel ...

Added: December 9, 2025

Determining the boundary of dynamical chaos in the generalized Chirikov map via machine learning

Чернышов Д. П., Satanin A., Shchur L., / Series arXiv "math". 2025.

We investigate the boundary separating regular and chaotic dynamics in the generalized Chirikov map, an extension of the standard map with phase-shifted secondary kicks. Lyapunov maps were computed across the parameter space (K,K(α, τ)) and used to train a convolutional neural network (ResNet18) for binary classification of dynamical regimes. The model reproduces the known critical ...

Added: November 21, 2025

On the impact of using alumina nanoparticles and initial aging on the microstructure and mechanical properties of the AA1050/AA2024 nanostructure composite, created by accumulative roll bonding (ARB) method

Roghani H., Borhani E., Jafarian H. R. et al., Wear 2023 Vol. 526-527 Article 204895

In this research, AA1050/AA2024 layered composites were created through six cycles of the ARB process. In this direction, the effect of using the reinforcing nanoparticles and the initial aging process on the mechanical properties and microstructure were researched. Two sheets of AA1050 and one sheet of AA2024 alternatively were used to create the composite. Also, ...

Added: February 18, 2025

Microstructure and Wear Behavior of Al0.25CoCrFeNiSi0.6 High-Entropy Alloy Coating Deposited on Stainless Steel by Detonation Spraying

Samoilova O., Shaburova N., Samodurova M. et al., Journal of Thermal Spray Technology 2023 Vol. 32 No. 5 P. 1220–1229

In this work, the morphology, microstructure, and phase composition of Al0.25CoCrFeNiSi0.6 high-entropy alloy coating (HEAC) deposited on stainless steel by detonation spraying (DS) are investigated. The Al0.25CoCrFeNiSi0.6 HEA ingot was first prepared by induction melting and then crushed and ground to ≤ 100 µm using a planetary ball milling apparatus. Detonation spraying was carried out on a computerized ...

Added: February 18, 2025

Upgrading the strength-ductility trade-off and wear resistance of Al0.25CoCrFeNiCu and Al0.45CoCrFeNiSi0.45 high-entropy alloys through severe cold rolling process

Naseri M., Ahmad Ostovari Moghaddam, Shaburova N. et al., Materials Today Communications 2024 Vol. 38 Article 108036

In the present work, Al0.25CoCrFeNiCu and Al0.45CoCrFeNiSi0.45 high entropy alloys (HEAs) were fabricated by induction melting and then subjected to severe cold rolling (SCR) to induce an ultrafine lamellar microstructure. By using electron back scattered diffraction (EBSD) analysis, the microstructural features of the SCR processed HEAs were determined to be deformation bands, severely pancaked grains, and a refined lamellar microstructure. The ...

Added: January 23, 2025

Doping dependence of low-energy charge collective excitations in high-Tc cuprates

Kagan M., Silkin V. M., Efremov D. V., / Series arXiv "math". 2024. No. 2411.12836.

In this study, we analyze the dielectric function of high-Tc cuprates as a function of doping level, taking into account the full energy band dispersion within the CuO2 monolayer. In addition to the conventional two-dimensional (2D) gapless plasmon mode, our findings reveal the existence of three anomalous branches within the plasmon spectrum. Two of these branches ...

Added: November 27, 2024

Influence of anisotropy on the study of critical behavior of spin models by machine learning methods

Sukhoverkhova D., Shchur L., / Series arXiv "math". 2024. No. 2410.14523.

In this paper, we applied a deep neural network to study the issue of knowledge transferability between statistical mechanics models. The following computer experiment was conducted. A convolutional neural network was trained to solve the problem of binary classification of snapshots of the Ising model's spin configuration on a two-dimensional lattice. During testing, snapshots of ...

Added: October 21, 2024

Comparison of the microcanonical population annealing algorithm with the Wang-Landau algorithm

Mozolenko V., Fadeeva Marina, Shchur L., / Series arXiv "math". 2024. No. 2405.10865.

The development of new algorithms for simulations in physics is as important as the development of new analytical methods. In this paper we present a comparison of the recently developed microcanonical population annealing (MCPA) algorithm with the rather mature Wang-Landau algorithm. The comparison is performed on two cases of the Potts model exhibiting a first ...

Added: May 20, 2024

Majorana modes and Fano resonances in Aharonov- Bohm ring with topologically nontrivial superconducting bridge

Kagan M., Аксёнов С. В., / Series Research Square "Research Suqare". 2024. No. 1.

We study different resonances (first of all of the Fano type) in the interference device formed by the Aharonov-Bohm ring with superconducting (SC) wire in the topologically nontrivial state playing a role of a bridge between top and bottom arms. We analyze Majorana modes on the ends of the SC wire and show that the collapse of the ...

Added: April 10, 2024