bluuebunny/crossref_metadata_2025 huggingface dataset:
Organochalcogen substituted dimesityl borane-imidazoles as fluorogenic fluoride and cyanide sensors in aqueous media
Authors: Parveen Sabeeha , Naaz Farha , Prasad Dasari L. V. K. , Anantharaman Ganapathi
Published: March 2023

Various sustainable fluorogenic anion sensors based on organochalcogens (–SPh, –SePh) substituted imidazole borane scaffolds, which particularly detect F− and CN− over other biologically relevant ions in competitive aqueous media are reported.
Sensitivity of Kβ mainline X-ray emission to structural dynamics in iron photosensitizer
Authors: Rogvall Johanna , Singh Roshan , Vacher Morgane , Lundberg Marcus
Published: March 2023

The sensitivity of metal K-edge X-ray emission spectroscopy to ultrafast structural dynamics is explained by a multiconfigurational wavefunction model. This provides a new path to interpret spectra of non-equilibrium structures in photochemistry.
High-throughput Raman spectroscopy allows ex vivo characterization of murine small intestinal intra-epithelial lymphocytes (IEL)
Authors: Guliev Rustam R. , Vogler Tina , Arend Natalie , Eiserloh Simone , Wiede Alexander , Kunert Timo , Dinkel Martin , Popp Jürgen , Schie Iwan W. , Hildner Kai , Neugebauer Ute
Published: March 2023

Intestinal inflammation-driving T cells within the epithelial layer of the small intestine can be identified and further characterized by Raman spectroscopy ex vivo.
Creation of single molecular conjugates of metal–organic cages and DNA
Authors: Nakajo Toshinobu , Kusaka Shinpei , Hiraoka Haruka , Nomura Kohei , Matsubara Noriaki , Baba Rintaro , Yoshida Yuki , Nakamoto Kosuke , Honma Masakazu , Iguchi Hiroaki , Uchihashi Takayuki , Abe Hiroshi , Matsuda Ryotaro
Published: March 2023

We report the development of an equimolar conjugate of a metal–organic cage (MOC) and DNA (MOC-DNA) for the first time. The unique functions derived from the conjugation are also reported.
Residual Li2O degrades PVdF during the preparation of NMC811 slurries for Li-ion batteries
Authors: Laurita Angelica , Zhu Liang , Cabelguen Pierre-Etienne , Auvergniot Jérémie , Guyomard Dominique , Moreau Philippe , Dupré Nicolas
Published: March 2023

MAS-NMR and XPS lead to new interpretation of LiF production in NMC811 slurries, stemming from the reaction of residual surface Li2O and PVdF.
Lab-on-a-DNA origami: nanoengineered single-molecule platforms
Authors: Kogikoski Sergio , Ameixa João , Mostafa Amr , Bald Ilko
Published: March 2023

DNA nanotechnology holds great promise for development of a lab-on-a-DNA origami. We summarize the latest trends based on DNA origami focusing on light-harvesting nanoantennas and platforms for single-molecule optical spectroscopy and/or atomic force microscopy (AFM).
Structural authentication of intermediates of mechanistic significance in palladium- and nickel-catalysed cross-couplings: case studies
Authors: Olding Angus , Ho Curtis C. , Maiti Debabrata , Bissember Alex C.
Published: March 2023

This Highlight examines key strategies that have enabled the structural authentication of important species that shed light on fundamental on-cycle intermediates in transition-metal-catalysed cross-couplings.
Design and bioanalytical applications of stochastic DNA walkers
Authors: Wang Guan A. , Kong Chuipeng , Li Feng
Published: March 2023

Synthetic DNA walkers that traverse stochastically on 2D and 3D tracks pave a promising way to design biosensors for diverse analytical applications.
Exploration and characterization of a novel cocrystal hydrate consisting of captopril, an amino acid-derived drug
Authors: Haku Ryotaro , Takatori Kazuhiko , Suzuki Naoto , Ono Makoto , Titapiwatanakun Varin , Fukami Toshiro
Published: March 2023

We found a novel cocrystal consisting of captopril, which is an amino acid-derived drug having a thiol group, and l-proline by using nano-spot-screening with LF-Raman. This cocrystal hydrate showed high hygroscopicity resulted from changes in intermolecular interactions.
In situ Raman study of the crystallization of glycine
Authors: Wang Jingjing , Alieva Adriana , Boyes Matthew , Pollard Andrew J. , Casiraghi Cinzia
Published: March 2023

In situ micro-Raman spectroscopy on an evaporating micro-droplet of glycine solution in water shows that a metastable state is first formed, where some of the molecules are more bent as compared to the α-glycine configuration.
Subtle hydrogen bond preference and dual Franck–Condon activity – the interesting pairing of 2-naphthol with anisole
Authors: Nejad Arman , Pérez Mellor Ariel F. , Lange Manuel , Alata Ivan , Zehnacker Anne , Suhm Martin A.
Published: March 2023

In contrast to standard DFT predictions, 2-naphthol is shown to dock on the oxygen of anisole, with excitation-dependent angular geometry.
Charge-controlled switchable CO2 capture and gas separation using BC3 nanosheets
Authors: Guo Yiqun , Kang Xuxin , Gao Shan , Duan Xiangmei
Published: March 2023

A switchable process for capturing and separating CO2 using charge-modulated sorbent materials.
Isotopic dependence of intramolecular and intermolecular vibrational couplings in cooperative hydrogen bond networks: singly hydrated phenyl-α-d-mannopyranoside as a case study
Authors: Camiruaga Ander , Goldsztejn Gildas , Çarçabal Pierre
Published: March 2023

Systematic substitution of water with heavy water and methanol in a singly hydrated mannoside reveals subtle spectral manifestations of vibrational couplings between modes interacting via non-covalent hydrogen bonding.
Synthesis and evaluation of four novel nitrogen-heterocyclic ruthenium polypyridyl complexes as photosensitizers for one and two-photon photodynamic therapy
Authors: Kou Junfeng , Shen Jinchao , Lin Mingwei , Xiong Kai , Wang Lili , Wei Fangmian , Zhang Junfeng
Published: March 2023

Four novel one-photon and two-photon absorbing PSs (photosensitizers) of nitrogen-heterocyclic ruthenium polypyridyl complexes were reported, and the photodynamic activities of these complexes were studied on 2D and 3D HeLa cancer models.
Mechanochemical synthesis of Li-rich (Li2Fe)SO cathode for Li-ion batteries
Authors: Mohamed M. A. A. , Saadallah H. A. A. , Gonzalez-Martinez I. G. , Hantusch M. , Valldor M. , Büchner B. , Hampel S. , Gräßler N.
Published: March 2023

Green and scalable mechanochemical synthesis of antiperovskite (Li2Fe)SO cathode.
A density functional theory study of Nix (x = 4–16) cluster impregnation effects in multi-metal (Ce, Ti) UiO-66 metal–organic frameworks
Authors: Pentyala Phanikumar , Biswas Prakash , Jha Prateek K.
Published: March 2023

We used periodic density functional theory calculations to analyse the structural and energetic properties of Ni clusters impregnated in Ce/Zr-UiO-66 and Ti/Zr-UiO-66 MOFs, to assess their potential use as catalysts for tri-reforming reaction.
Recent advances in carbon-based nanomaterials for the treatment of toxic inorganic pollutants in wastewater
Authors: Devi M. Keerthana , Yaashikaa P. R. , Kumar P. Senthil , Manikandan S. , Oviyapriya M. , Varshika V. , Rangasamy Gayathri
Published: March 2023

Wastewater contains inorganic pollutants, generated by industrial and domestic sources, such as heavy metals, antibiotics, and chemical pesticides, and these pollutants cause many environmental problems.
The electrochemical study of NixCe1−xO2−δ electrodes using natural gas as a fuel
Authors: Mohsin Munazza , Farhan Shumail , Ahmad Naveed , Raza Asif Hassan , Kayani Zohra Nazir , Jafri Syed Hassan Mujtaba , Raza Rizwan
Published: March 2023

Solid oxide fuel cells (SOFCs) enable the direct electrochemical conversion of hydrocarbon-based fuels, such as natural gas, to electricity with high efficiency.
TiO2 (P25) nanoparticle catalyzed C-alkylation and quinoline synthesis via the borrowing hydrogen method
Authors: Kala Krishnan , Gupta Sanjeev , Bhat Venugopal T. , Sasidharan Manickam , Selvam Parasuraman , Malini Thanikachallam Pushpa
Published: March 2023

TiO2 (P25) nanoparticle catalyzed C-alkylation and quinoline synthesis via the borrowing hydrogen method.
Fluorinated dendritic amphiphiles, their stomatosome aggregates and application in enzyme encapsulation
Authors: Guitton-Spassky Tiffany , Junge Florian , Singh Abhishek Kumar , Schade Boris , Achazi Katharina , Maglione Marta , Sigrist Stephan , Rashmi Rashmi , Haag Rainer
Published: March 2023

Perforated vesicles have been employed as novel reaction vessels in protein encapsulation, improving enzyme activity compared to closed vesicles through selective retention of cargo.
Dissociative reactions of [Au25(SR)18]− at copper oxide nanoparticles and formation of aggregated nanostructures
Authors: Roy Jayoti , Mondal Biswajit , Vishwakarma Gaurav , Nonappa  , Vasanthi Sridharan Nishanthi , Krishnamurthi Pattabiraman , Pradeep Thalappil
Published: March 2023

Here, we demonstrate the unusual reactivity of an atomically precise nanocluster, Au25(PET)18 with CuO nanoparticles, as an efficient way for atom exchange, leading to superstructures.
Comment on “Study of enantioselective metolachlor adsorption by activated carbons” by A. Gomis-Berenguer, I. Laidin, S. Rononcial and B. Cagnon, RSC Advances, 2020, 10, 40321
Authors: Colasurdo Diego D. , Carreras Javier G. , Laurella Sergio L.
Published: March 2023

The adsorption of metolachlor on activated carbons has been reported to be more effective for a pure enantiomer compared with the racemic. The process is claimed to be enantioselective. This explanation is questioned by theoretical calculations.
Flexible cellulose-based piezoelectric composite membrane involving PVDF and BaTiO3 synthesized with the assistance of TEMPO-oxidized cellulose nanofibrils
Authors: Li Meilin , Jiang Bei , Cao Shuoang , Song Xinyi , Zhang Yuanqiao , Huang Lijun , Yuan Quanping
Published: March 2023

Cellulose nanofibrils (CNF) with abundant oxygen-containing groups acts as even and nanoscale nucleation sites for the synthesis of BaTiO3 which was incorporated in CNF and PVDF to fabricate flexible composite piezoelectric membrane.
Phosphanyl-substituted tin half-sandwich complexes
Authors: Müller Carsten , Schu Justin , Morgenstern Bernd , Zimmer Michael , Schmidtmann Marc , Schäfer André
Published: March 2023

Phosphanyl-substituted tin(ii) half sandwich complexes are reported, which exhibit Lewis acidic tin atoms and Lewis basic phosphorous atoms and form head-to-tail dimers.
Catalytic utilization of converter gas – an industrial waste for the synthesis of pharmaceuticals
Authors: Runikhina Sofiya A. , Afanasyev Oleg I. , Kuchuk Ekaterina A. , Perekalin Dmitry S. , Jagadeesh Rajenahally V. , Beller Matthias , Chusov Denis
Published: March 2023

From waste to value. An efficient and convenient ruthenium-catalyzed reduction of aromatic nitro compounds using converter gas as a reducing agent to produce valuable pharmaceuticals has been developed.
Self-supporting nano-porous carbon nanosheet with organized sp2-C network for unprecedented catalytic performance in room-temperature H2S oxidization
Authors: Hu Feng , Chen Huan , Zhang Zhengliang , Niu Bo , Zhang Yayun , Long Donghui
Published: March 2023

We developed a facile strategy for synthesizing self-supporting nano-porous carbon nanosheet with organized sp2-C network for unprecedented catalytic performance in room-temperature H2S oxidization.
Rational strategy to enhance the thermal stability of solar cell performance using a photocrosslinkable conjugated polymer
Authors: Chau Hong Diem , Park Su Hong , Jung Sung Hoon , Park Jin Young , Kang Min Ji , Harit Amit Kumar , Woo Han Young , Cho Min Ju , Choi Dong Hoon
Published: March 2023

A photocrosslinkable donor, PM6-X30, has been designed by engineering the side chains of the PM6 backbone. A high PCE of 12.33% was achieved with significantly enhanced thermal stability.
Maintaining the configuration of a light-responsive metal–organic framework: LiYGeO4:Bi3+-incorporation-induced long-term bending through short-time light irradiation
Authors: Zhang Wen-Juan , Zheng Li , Qi Shi-Chao , Li Jia-Xin , Xue Ding-Ming , Liu Xiao-Qin , Sun Lin-Bing
Published: March 2023

After UV illumination at 254 nm for 10 min, the incorporated LiYGeO4:Bi3+ in the PCN-PLM can continuously provide light irradiation at 365 nm to regulate the CO2 adsorption capacity of PCN-250.
Motion parameters estimation of manoeuvring weak target with multiple motion stages based on range symmetry transform and short‐time fractional Fourier transform
Authors: Li Zijing , Zhang Qilei , Dong Zhen , Yu Lei
Published: March 2023

With the advancement of manoeuvrability and the increasement of coherent processing interval (CPI), the observed target might be of multiple motion stages. Therefore, most existing long‐time coherent integration (LTCI) algorithms based on the assumption of single‐motion stage is not proper any more. To address this problem, this letter proposes an effective motion parameters estimation algorithm, which is the key step of LTCI, for the manoeuvring weak target with multiple motion stages based on range symmetry transform and short‐time fractional Fourier transform (RST‐STFrFT). The effectiveness of the proposed algorithm is verified by signal‐level simulations.
Trinity‐Yolo: High‐precision logo detection in the real world
Authors: Mao KeJi , Jin RunHui , Chen KaiYan , Mao JiaFa , Dai GuangLin
Published: March 2023

Logo detection has a wide range of applications in the multimedia field, such as video advertising research, brand awareness monitoring and analysis, trademark infringement detection, autonomous driving and intelligent transportation. Compared with other types of images, logo images in the real world have greater diversity in appearance and more complex backgrounds. Therefore, identifying logos from images is a challenge. A strong baseline method Trinity‐Yolo, is proposed, which incorporates attention mechanism, stripe pooling and weighted boxes fusion (WBF) into the state‐of‐the‐art Yolov4 framework for large‐scale logo detection. The attention mechanism improves the feature extraction ability of the deep detection model, the stripe pooling expands the field of view of the model and the weighted boxes fusion enables the model to obtain excellent corrections when outputting the prediction boxes. Trinity‐Yolo can solve the problems of lack of training data, multi‐scale objects and inconsistent bounding‐box regression. On the dataset LogoDet‐3K, the average performance of Trinity‐Yolo is 3% higher than that of Yolov4. Compared with other deep detection models, the performance of Trinity‐Yolo is improved more. The experimental performance on other existing datasets verifies the effectiveness of this method.
Unveiling the chemical fingerprint of phosphorus-rich stars
Authors: Brauner Maren , Masseron Thomas , García-Hernández Domingo A. , Pignatari Marco , Womack Kate A. , Lugaro Maria , Hayes Christian R.
Published: March 2023

Context The origin of phosphorus, one of the essential elements for life on Earth, is currently unknown. Prevalent models of Galactic chemical evolution (GCE) systematically underestimate the amount of P compared to observations, especially at low metallicities. The recently discovered P-rich ([P/Fe] ≳ 1.2 dex) and metal-poor ([Fe/H] ≃ −1.0 dex) giants further challenge the GCE models, calling current theories on stellar nucleosynthesis into question.

Aims. Since the observed low-mass giants are not expected to produce their high P contents themselves, our primary goal is to find clues on their progenitor or polluter. By increasing the number of known P-rich stars, we aim to narrow down a statistically reliable chemical abundance pattern that defines these peculiar stars. In this way, we place more robust constraints on the nucleosynthetic mechanism that causes the unusually high P abundances. In the long term, identifying the progenitor of the P-rich stars may contribute to the search for the source of P in our Galaxy.

Methods. We performed a detailed chemical abundance analysis based on the high-resolution near-infrared (H band) spectra from the latest data release (DR17) of the APOGEE-2 survey. Employing the BACCHUS code, we measured the abundances of 13 elements in the inspected sample, which is mainly composed of a recent collection of Si-enhanced giants. We also analyzed the orbital motions and compared the abundance results to possible nucleosynthetic formation scenarios, and also to detailed GCE models. These models were produced with the OMEGA+ chemical evolution code, using four different massive star yield sets to investigate different scenarios for massive star evolution.

Results. We enlarged the sample of confirmed P-rich stars from 16 to a group of 78 giants, which represents the largest sample of P-rich stars to date. The sample includes the first detection of a P-rich star in a Galactic globular cluster. Significant enhancements in O, Al, Si, and Ce, as well as systematic correlations among the studied elements, unveil the unique chemical fingerprint of the P-rich stars. In contrast, the high [Mg/Fe] and [(C+N)/Fe] found in some of the P-rich stars with respect to P-normal stars is not confirmed over the full sample because of the current uncertainties. Strikingly, the strong overabundance in the α-element Si is accompanied by normal Ca and S abundances. This is at odds with current stellar nucleosynthesis models of massive stars. Our analysis of the orbital motion showed that the P-rich stars do not belong to a locally specific population in the Galaxy. In addition, we confirm that the majority of the sample stars are not part of binary systems.
The principles of ergodesign in products from composite materials
Authors: Terekhova N. , Spasskaya D. , Klenin A.
Published: March 2023

The article is devoted to the possibilities of applying the principles of ergodesign in products made of composite materials. Composites with such characteristics as high strength and high quality, in addition to the use of various technological techniques in their manufacture, require solving problems of effective user interaction, that is, ergonomics and aesthetics (design). The general task of ergonomics and design (ergodesign) includes user and visual testing (VT or VI) and shirography (speckle interferometry) with direct adjustment to the user. The article also discusses the main methods of quality control of industrial and technical products made of composite materials. The advantages and disadvantages of quality control methods, the recorded parameters of CM products and their application areas are considered.
Virtual calculations for analyzing the operation of air spring
Authors: Marenkov I. , Baurova N.
Published: March 2023

The 3D-model of an air spring for road vehicles is presented. A virtual calculation of the air spring has been carried out. Calculation results have been analyzed for adequacy by investigating grid deformation and checking pressure inside the rubber part of the air spring. The most dangerous places of the air spring are shown. Possibilities of LS-Dyna software package for engineering analysis are demonstrated. The influence of computer-aided design systems on modern engineering solutions is considered.
Modeling of aeroelastic composite plates vibrations based on asymptotic theory
Authors: Dimitrienko Yu. , Gubareva E. , Tumanov A.
Published: March 2023

The paper is devoted to solving the problem of aeroelastic deformation of multilayer thin composite plates. A theory of aeroelastic deformations of composite plates based on the application of the asymptotic averaging method and piston theory for modeling pressure on the body surface is proposed. The averaged equations of aeroelastic vibrations of composite plates are derived. An example of a numerical solution of the problem of one-dimensional bending vibrations of a composite plate based on the developed theory is given.
Filtration velocity under roller squeezing
Authors: Khurramov Sh. , Khalturaev F. , Kurbanova F.
Published: March 2023

Analytical dependencies are determined that describe the patterns of change in filtration rates in the squeezing area. It was established that the fluid filtration rate along the abscissa axis at the boundaries of the compression zone is zero, and inside the zone, it takes negative values. It was found that the fluid filtration rates along the ordinate axis are zero at the beginning of the compression zone; they increase to a maximum at a point lying on the line of centers, and in the zone of strain restoration, they depend on the angle that determines the position of the point where the fluid changes direction.
Evaluation of LDPC codes efficiency in channels with fading
Authors: Shinkevich Artem , Pokamestov Dmitriy , Kryukov Yakov , Shalin Georgiy , Brovkin Andrey , Rogozhnikov Eugeniy
Published: March 2023

The article discusses the operation of communication systems using a low-density parity check codes in channels with multipath propagation. This class of codes has found wide application in modern communication and broadcasting systems and is one of the most effective in now. Some theoretical and practical issues of combating the effects arising from multipath propagation are presented. The description of the developed simulation model, channel codec, equalizer, and transmission channel is given. The channel encoder in the model is designed in accordance with the specifications for the 5G New Radio (5G NR) communication standard. The multipath parameters in the transmission channel correspond to the TDL models for 5G NR, with the exception of the Doppler shift, which is not taken into account in the simulation. In addition, there is additive interference in the channel. The decoding algorithm used was also described in detail. As a result of the study, the dependences of the bit error probability on the signal-to-noise ratio were obtained for the code rates 1/2 and 1/8, as well as for the system without coding. Based on the results obtained, it is possible to judge the correcting ability of this class of codes.
Determination of the optimal size of the fuel element of the elliptical cross-section of a nuclear reactor
Authors: Kanareykin Aleksandr
Published: March 2023

The work is devoted to the process of heat exchange of a nuclear reactor. Attention was paid to improving the reliability of the fuel rods of the nuclear reactor. At the same time, two cases of the cross section of the rod shell were considered: cylindrical and elliptical. Based on the application of the differentiation method, it was shown that the level of thermal stresses arising during the transition from a circular cross-section to an elliptical one decreases. Which confirms the choice of the section of the reduced elements in the form of an ellipse. The optimal size of the section itself was also obtained. The obtained result is useful because by varying the geometric shape of the cross-section, it is possible to reduce the level of thermal stresses that occur, and, consequently, to increase the reliability and durability of nuclear rocket engine designs.
Applying lean manufacturing, corporate social responsibility and the Hungarian method for supply chain project management
Authors: Akhmatova Malika-Sofi , Deniskina Antonina , Akhmatova Dzhennet-Mari , Sergeeva Svetlana , Orlov Alexandr
Published: March 2023

Supply chain project management is a comprehensive process allowing managers to coordinate resources, functions and actions to achieve a specific goal within a set time frame, scope and budget. One of the problems in the context of improving the quality of the Supply Chain Project Management is the creation of a favorable social environment for employees who are a crucial part of the supply chain management (SCM) system. In this article, this issue is considered from the perspective of the assignment problem. First, this article proposes the Corporate Social Responsibility (CSR) as a platform for introducing Lean practices within the supply chain. It strongly contributes to filling the research gap in the field of the CSR and Lean philosophy coordination. The ultimate goal is to promote the culture of continuous improvements, human resources (HR) development and satisfaction of workers’ social needs for the sustainability of the Supply Chain Project Management. Second, the Hungarian method is implemented in the context of the coordination of CSR and Lean management for right decisions in assignment problem concerning the issues of supply chain employees’ engagement and development. The results reveal the possibility of achieving positive effects in creating an employee-friendly supply chain environment and unlocking untapped human potential while maintaining long-term benefits. The research findings would assist the scientific community and practitioners in applying proposed ways to enhance labor productivity and ensure the development of employee-friendly social environment.
Application of optimal solution concentration in mineral fertilizer suspension foliar feeding in winter wheat
Authors: Azimov Bakhrom
Published: March 2023

Taking into account plant biological properties, soil properties, soil-climatic conditions, and fertilizer properties, the development of the optimal rate, duration, and methods of application of suspensions made from mineral fertilizers, the optimization of the soil nutrient environment, the formation of the necessary chemical composition in the plant, and scientific research aimed at managing plant nutrition, special attention is paid. In Uzbekistan, scientific research aimed at evaluating the effective use of mineral fertilizers in increasing the yield of agricultural crops, including wheat, is being conducted, and certain results are being achieved. It is critical to develop an optimal system of using mineral fertilizers to ensure the cultivation of high-quality grain crops from autumn wheat varieties in the irrigated typical gray soils of the Tashkent province, as well as to determine the nutrient environment formed in the soil during specific periods of autumn wheat development phases and the amount and ratio of nutrients in the plant. Fertilizer is an effective and fast-acting factor that increases the quality of the crop. Therefore, it is important to develop the optimal norm for using a suspension of mineral fertilizers in foliar feeding, taking into account the characteristics of the soil and variety, to grow a high-quality grain crop from wheat, as well as to study the effect of these norms on the growth development, seedling thickness, grain yield, and quality of autumn wheat.
The influence of the food factor on the components of the antioxidant protection system in fish
Authors: Romanova Elena , Lyubomirova Vaselina , Romanov Vasily , Turaeva Elena
Published: March 2023

Functional feeding complexes that correct metabolic processes in animal bodies, increasing their productivity and preventing infectious diseases are a new direction in the development of modern feed production. Such feeds, thanks to a set of components, have a wide range of healing effects. We have developed a feed additive consisting of probiotics, adaptogens, vitamins and amino acids. The aim of the work was to study the effect of a new feed additive on the antioxidant system of fish. During the research, it was found that the content of glutathione (GSH) in male fish raised on the background of biologically active feed additive doubled, and in females by more than 30%, and the activity of glutathione-S-transferase also increased. Therefore, on the background of the use of new biologically active feed additive, the resistance of the fish body to free radical and peroxide processes increases.
Forming the urban planning traditions in the east of Europe: small towns of Volga Bulgaria
Authors: Nigamaev Albert , Kornilova Irina
Published: March 2023

The article is devoted to the problem of originating towns in the east of medieval Europe. The authors particularly focus on the attributes of the medieval feudal town in the Volga-Kama region. The unclear criteria for the socio-historical interpretation of Bulgar hillforts present significant problems not only to distinguish towns from the total number of fortified settlements, but also to draw a line between large, medium-sized and small towns. To identify small towns, it is necessary to rely not only on such well-known criteria as the area of a fortified settlement, the features of topography, the layout of defensive fortifications, but also to consider the specific features of the origin, the structure of the population and the functions of towns. The main problem lies at the methodological level as due to the informative lack of the available written sources, such a historical and cultural phenomenon as the Bulgar town is mainly studied by using archaeological methods. As a rule, most small towns appeared much earlier than the settlements of the surrounding rural population. Almost all of them were located along rivers and land trade routes, so their main functions were to control those vital economic and military routes. Moreover, the small towns in the Kama region had served as land centers since the Pre-Mongol period. In contrast to the medium-sized towns, most small towns have preserved their historical names. The data given in the article have taken account of the number of Pre-Mongol towns in Volga Bulgaria.
Directions of improvement of massive hydraulic retaining structures
Authors: Balzannikov Mikhail
Published: March 2023

The article deals with the issues of improving hydraulic retain-ing structures of the gravity (massive) type. In order to reduce the cost of building gravity (massive) dams and increase their efficiency, a constant search for new, more efficient design solutions is underway. The purpose of the research is to analyze the main directions of improving hydraulic re-taining structures of gravity type. The article suggests a more effective method for improving concrete gravity dams, based on the idealization of structural and technological solutions. Its peculiarity is that on the basis of the identified solutions of the traditional method, an effective design of a concrete dam and the technology of its construction are selected, and then promising, patentable solutions are developed, which in their properties approach the ideal structures. In accordance with the method, the structural and technological solutions of the gravity dam with the use of coarse-pored concrete were developed. The design is high-tech and allows cooling of the dam mass by filtering water through large pores of concrete.
Tools for automating the design of construction objects
Authors: Knyazeva Natalia , Orekhov Aleksey
Published: March 2023

The digitalization of the construction industry is affecting the designer's profession - today it is not enough for him or her to be proficient in information modeling systems; the increasing complexity of projects requires him or her to have knowledge in developing plug-ins and scripts. Even if an organization has programmers on staff, an ordinary architect or a designer must understand how to issue a technical specification for writing an appropriate module. However, in most cases, designers have to optimize routine operations and automate individual tasks in-house using visual programming or algorithmic modeling tools.
Organization of restoration and repair works
Authors: Zhadanovskiy B. , Sinenko S.
Published: March 2023

Housing stock and the objects of industrial production of our country are represented by constructions, which were erected in the XX century, XIX century and pre-revolutionary time. Among them there are constructions built with using of natural stone and brick. The service time of this constructions is several decades or hundreds of years. Considerable amount of this value are constructions of the first industrial generation and objects of cultural heritage under the state protection.Nowadays, because of untimely overhaul and restoration, it is very complicated to bring masonry cultural heritage objects in normal technical state, accounting the negative effect of natural climatic factors. Monitoring of technical state of this objects is quite important for timely carrying out the overhaul, restoration and reconstruction.This government-controlled task has actual significance. Preservation of this objects in good technical state is important in general for the Russian Federation. Domestic researchers developed effective method for the monitoring of technical state of masonry architecture structures. It takes to the account the main natural climatic factors as the influence of solar radiation, wind load, freezing and defrosting of building materials. This article describes a method which considers the restoration works on the example of brick building according to order of Moscow City department of non-residential premises is given to AK "Mosagropromstroy". The restoration works is made with preliminary deterioration assessment.
Digitalization of the transport and logistics industry of the region as an element of ensuring economic security
Authors: Karanina Elena , Kotandzhyan Asya
Published: March 2023

The article reveals the nature and mechanisms of the influence of the digital economy on the development of the transport and logistics industry of the region. The relevance of the study is undeniable, since recent years demonstrate the urgent need for technological innovative transformations in all areas of the region's economy, and the issue of ensuring the region's socio-economic security in the context of Industry 4.0 is also acute. The main purpose of this article is to indicate and argue the hypothesis of the direct impact of digitalization of the transport and logistics industry of the region on the state of indicators of its economic security. During the work, the tasks of identifying the most relevant and demanded digital technologies in the transport infrastructure for increasing the socio-economic development of the region, as well as their relationship with the main indicators of economic security of the region, were set. As the main conclusions on the work, one can note the justification of the objective need of the transport industry for new innovative developments. The economic effect that the introduction of digital technologies in the transport sector brings is obvious and tangible. Savings are realized by reducing unearmarked costs, increasing control and manageability of the system.
Block copolymers as dispersants for nanomaterial added to fuel
Authors: Makarova Anastasiya , Zueva Olga , Zvereva Elvira , Shaidullin Ainur , Yanushevskaya Yana , Turanov Alexander
Published: March 2023

Development and optimization of technologies using nanocomposite materials is one of important areas in modern industrial engineering. In transport industry and in fuel power engineering the use of nanoparticles can optimize fuel consumption, reduce pollutants, and increase aggregate productivity. A special role belongs to carbon nanomaterials, primarily to multi- and single-walled carbon nanotubes, since, beside the improvement of fuel characteristics, they can be completely utilized during combustion. Application of nanoparticles requires the preparing of stable suspensions suitable for various technological processes. In this work by the help of NMR spectroscopy the dispersing of nanomaterial by block copolymers was considered: by poloxamers (P184 and P407) in aqueous medium and by poloxamine (Diproxamine-157) and its mixture with liquid poloxamer P184 in oil medium. Good dispersibility of nanomaterial and stability of aqueous dispersions obtained with the help of poloxamers have been shown. Also, it has been established that pure liquid reverse-sequential poloxamines can be used to create oil-soluble dispersions of nanomaterial. Possible mechanisms to prevent reagglomeration by the help of poloxamines have been considered.
Improvement of tribological properties of bearings by laser processing of cast-iron shafts of heavy-duty diesel engines
Authors: Alisin Valery
Published: March 2023

The article discusses the tribological properties of plain bearing materials in heavy-duty diesel engines with a cast-iron crankshaft. The effectiveness of the influence of laser hardening of shaft necks on the tribological properties of main and connecting rod bearings in comparison with nitriding is substantiated. Simulation comparative tribological tests have been carried out on a laboratory friction machine on samples of materials of an insert made of bronze Br-30 and a shaft made of high-strength cast iron with nodular graphite under conditions of sliding friction with lubrication after laser treatment hardening and nitriding. The influence of hardening treatments of the shaft necks on the antifriction properties and wear resistance of friction couples materials is investigated. Particular attention is paid to the scuff resistance of friction couples. The assumption of a higher efficiency of laser hardening in comparison with nitriding based on the tribological properties of friction surfaces is substantiated. Based on the study, it is recommended to use laser hardening of the crankshaft necks to increase the service life of heavy-duty low-speed diesel engines.
Determination of the parameters of the curvilinear movement of vehicles
Authors: Petrov Nikolay , Abramov Alexander
Published: March 2023

Today, the creation of new vehicles is impossible without computer modeling. Modern vehicles have numerous electronic systems that increase its traffic safety, comfort, and route planning management. Reliable operation of all systems is achieved by using an accurate dynamic model of the vehicle to assess safety and the possibility of movement along specified trajectories. Creating an accurate dynamic vehicle model requires correct initial parameters. When modeling the curvilinear movement of motor vehicles, such parameters as the coefficients of resistance to lateral sliding of tires and the angles of sliding of axles, which are mainly determined on test benches in laboratory conditions, are important to obtain the adequacy of the object under study. However, quite often it is impossible to obtain reliable information from tire manufacturers or testing laboratories, which ultimately affects the adequacy of modeling the parameters of vehicle movement. A method is proposed for determining the design parameters of tires using primary information sensors, which are sensors of angular and linear velocities, linear accelerations, rotation angles of controlled wheels and an on-board information processing device. The advantages of this method are that it allows real-time measurement of the angles of the axles and the coefficients of resistance to the lateral withdrawal of the axles when the vehicle is moving at an arbitrary speed along a trajectory of variable curvature. This method can be used to create an accurate dynamic model in the study of the controllability and stability of the vehicle, as well as an integral part of the vehicle dynamics control system.
Route management modeling of high-speed trains on the train dispatcher section
Authors: Muhiddinov Obid , Boltayev Sunnatillo
Published: March 2023

This article gives a brief overview on fragmentation and how to prepare for a high-speed train. Currently, on the sections where high-speed trains run, the train dispatcher uses his experience and high skills to solve this problem by preparing train routes, is the method of calculating the tracking and crossing stations, preparing tracks for trains at stations. This process is modeled using the Petri Nets.
Formation of multinational personnel loyalty as an organization sustainable development factor
Authors: Vasin Sergey , Prokhorova Yulia , Kotova Anna
Published: March 2023

The object of the research is represented by foreign employees working in the Russian Federation as part of the multinational personnel of the organization. The aim of the work is to develop theoretical provisions and practical recommendations to increase the level of sustainability of multinational organization development on the basis of effective management of international staff loyalty and its optimal use. The work used complementary methods of questioning and expert survey, based on the assessment - Likert scale with subsequent comparison of the actual state of management processes with expert assessments, determining the sustainability of organizational development. The system of factors influencing the formation of multinational personnel loyalty in the organization was formed, focusing on the importance of mechanisms of adaptation and motivation of foreign workers. The method of predicting the performance of enterprises on the basis of calculation of the recommended level of use of adaptation and motivation processes which form the loyalty of multinational personnel in organizations is proposed. The method is based on the expression of traditionally qualitative indicators of human resource management in quantitative formats in order to determine the regression dependences of the sustainability of organizations’ performance on the initial processes of personnel management. The scientific novelty of the research results consists in substantiating the specifics of forming the loyalty of multinational personnel and developing practical recommendations aimed at enhancing the sustainable development of multinational organizations, taking into account the cross-cultural characteristics of human resources. The application of the author's methodology and algorithm in the practice of organizations with multinational staff allows to estimate the level of actual use of factors influencing the formation of multinational staff loyalty and their significance, as well as to develop a set of measures aimed at increasing the sustainability of organization development.
Transformation of approaches to audit in Russia
Authors: Batashova Anna , Popova Ellada , Chernetskaya Svetlana , Barsukova Svetlana , Tishchenko Irina
Published: March 2023

Analysis of audit evolution in the period from 2001 to date is performed; stages of audit development associated with changes in the concept of its advance are highlighted. Key revisions of the Law on Audit Activities and changes in the main issues of auditing are analyzed. As the key periods the following ones are allocated: validity period of Federal Law 119-FZ, term of validity of Federal Law 307-FZ, period of changes made by Federal Law 403-FZ, interval of modifications resulting from Federal Law 359-FZ. Analysis of transformation of approaches to audit is considered in the context of six parameters: subject of audit, requirements for audit organizations, mandatory audit criteria, tendering procedures, audit standards and control of audit organizations. Particular attention is paid to the changes in audit activities envisaged in the new concept of its development and in the current version of the Law on Audit Activities.
Implementing smart technology in engineering education
Authors: Streltsova Maria , Gladkova Lubov , Bulygina Julia
Published: March 2023

Engineering is an important field for the evolution of the world. Engineers build and create things that improve people’s lives. In addition, engineers use innovative technologies in their academic and professional work. Consequently, it is important to train future engineers to use intelligent technology. Engineering is a complex field that uses many innovative technologies. Such technologies as CAD/CAM, 3D printing, and virtual reality are becoming increasingly popular in the engineering community. Engineers are using these technologies to create new prototypes and inform the public about new ideas. By presenting these intelligent ideas to the world, engineers are helping to create better products and designs. In addition, engineering schools are using smart technology to educate their students. Instructors use CAD/CAS software in the classroom to demonstrate practical applications. This helps students understand what they are learning and apply it to real-world scenarios. In addition, engineering schools use gamification and case studies to engage students in the classroom. These strategies help teach students relevant concepts and apply them to real-world situations. It is easy to see how smart technology improves engineering education and implementation in the field. Current and future engineers use these tools in their daily work. These changes improve learning and teaching tactics for instructors. Ultimately, this leads to better designs and applications of technology in the real world. It is also interesting to note how the adoption of smart technology affects engineering degrees. Many engineering colleges are introducing technology tools into their curricula as a graduation requirement. This allows their programmes to properly prepare their students for the workplace. Students are required to take technology implementation exams before entering college courses. This ensures that all graduates are well-prepared to work as engineers. Engineering is an exciting field, with many advanced technologies, both educational and practical. Future engineers learn by introducing and implementing new smart technologies in their classrooms. In addition, renowned engineers use innovative strategies to improve existing technologies or create new blueprints for inventions. Engineering is an integral part of the world; thanks to clever technological solutions, everyone can become an engineer!
Trust as a basis for ensuring sustainable interaction of market agents
Authors: Bikmetov Evgeniy , Amirkhanova Liliya , Sizonenko Zarina , Ignatieva Oksana , Sizonenko Roman
Published: March 2023

The article undertakes an interdisciplinary theoretical analysis of the content and conditions of trust, which allows the cost-effective use of other resources. Ethical principles and regulators of the formation of trust, as well as an economic approach to assessing the measure of trust between agents of market relations, are substantiated. The category of trust has an economic content, since its absence in the relations of market agents leads to increased values of losses, and hence to a decrease in the effectiveness of the marketing management system. Agents of a market economy, depending on the current situation, need to be able to determine the measure of trust that they can provide to each other in the implementation of transactions. A toolkit for a quantitative assessment of a measure of confidence is proposed, the basis of which is the observance of ethical standards. However, with any measure of confidence, there will be losses due to the persistence of cases of immoral transactions. It is necessary to find its optimal measure according to the criterion of minimum losses from transactions. It is concluded that the current level of trust will lead to its further approval as a norm. Each situation has its own optimal measure of confidence. The article reveals the role of cultural and ethical regulators in the management of sustainable development. A business organization is considered as a target community, which is directly related to the categories of •values• and •value orientations•. In this context, culture and corporate ethics are presented to manage the sustainable behavior and economic interaction of people both in the internal environment of the organization and in the external marketing environment. The authors note the need to consider the fact that strict regulation of the methods of employees’ actions can lead to the destruction of a certain professional and ethical position. According to the results of the study, it was proved that in the process of managing an organization, it is necessary to take into account the characteristics of culture in organizational relations, since they make it possible to judge the effectiveness and efficiency of decisions made, taking into account socioeconomic and moral consequences.