bluuebunny/crossref_metadata_2025 huggingface dataset:
Multi-omics determination of metabolome diversity in natural coral populations in the Pacific Ocean
Authors: Reddy Maggie M. , Goossens Corentine , Zhou Yuxiang , Chaib Slimane , Raviglione Delphine , Nicolè Florence , Hume Benjamin C. C. , Forcioli Didier , Agostini Sylvain , Boissin Emilie , Boss Emmanuel , Bowler Chris , de Vargas Colomban , Douville Eric , Flores Michel , Furla Paola , Galand Pierre E. , Gilson Eric , Lombard Fabien , Pesant Stéphane , Reynaud Stéphanie , Sullivan Matthew B. , Sunagawa Shinichi , Troublé Romain , Thurber Rebecca Vega , Wincker Patrick , Zoccola Didier , Voolstra Christian R. , Allemand Denis , Planes Serge , Thomas Olivier P. , Banaigs Bernard
Published: August 2023

Coral reefs are considered one of the most emblematic ecosystems in our oceans, but their existence is increasingly threatened by climate change. In this study, natural populations of two reef-building coral genera, Pocillopora spp. and Porites spp., and one hydrocoral Millepora cf. platyphylla from two different marine provinces in the Pacific Ocean were investigated using a multi-omics approach as part of the Tara Pacific expedition. Here, we propose a standardised method consisting of a biphasic extraction method followed by metabolomics analysis using mass spectrometry for the lipidome and 1H nuclear magnetic resonance for hydrophilic metabolites. Our study assessed a broad range of the metabolome and is the first to identify and add 24 compounds by NMR and over 200 lipids by MS analyses for corals. Metabolic profiles were distinct among genera but not within genotypes of the cnidarian corals. Although endosymbiotic dinoflagellates of the family Symbiodiniaceae are known to play a central role in the metabolomic signature of the coral holobiont, they did not account for all differences. This suggests that a combined effect by different members of the coral holobiont and an interaction with the environment might be at play. Our study provides foundational knowledge on the coral holobiont metabolome.
Processing load, and not stimulus evidence, determines the duration of unconscious visual feature integration
Authors: Vogelsang Lukas , Drissi-Daoudi Leila , Herzog Michael H.
Published: August 2023

Integration across space and time is essential for the analysis of motion, low contrast, and many more stimuli. A crucial question is what determines the duration of integration. Based on classical models of decision-making, one might expect that integration terminates as soon as sufficient evidence about a stimulus is accumulated and a threshold is crossed. However, there is very little research on this question as most experimental paradigms cannot monitor processing following stimulus presentation. In particular, it is difficult to determine when processing terminates. Here, using the sequential metacontrast paradigm (SQM), in which information is mandatorily integrated along motion trajectories, we show that the processing load determines the extent of integration but that evidence accumulation does not. Further, the extent of integration is determined by absolute time instead of the number of elements presented. These results have important implications for understanding the time course and mechanisms of temporal integration.
Understanding molecular and electrochemical charge transfer: theory and computations
Authors: Nazmutdinov Renat R. , Shermokhamedov Shokirbek A. , Zinkicheva Tamara T. , Ulstrup Jens , Xiao Xinxin
Published: August 2023

We overview theory and computations of electron, proton, and proton-coupled electron transfer processes in chemistry and electrochemistry. We combine the theoretical views with evolving single-molecule electrochemistry.
A general method for endowing hydrophobic nanoparticles with water dispersion abilities
Authors: Wang Han , Fu Zi , Ji Xiuru , Lu Min , Deng Lianfu , Liu Zhuang , Yin Bo , Ni Dalong
Published: August 2023

We have developed a generally applicable method involving using dimercaptosuccinic acid (DMSA) for endowing hydrophobic inorganic nanoparticles with water dispersion abilities.
Optimization of a concentrated growth factor/mesoporous bioactive glass composite scaffold and its application in rabbit mandible defect regeneration
Authors: Ma Mengran , Shen Wenjing , Li Beibei , Sun Mengwen , Lin Dan , Meng Lingqiang
Published: August 2023

A CGF/FG/MBG composite scaffold and fibrin gelation of gpCGF on bone repairing scaffolds were prospected as an efficient way for clinical translation, which might provide new insight into the research of other maxillofacial defects.
Gold nanocluster-based fluorescent sensors forin vitroandin vivoratiometric imaging of biomolecules
Authors: Santhoshkumar S. , Madhu Manivannan , Tseng Wei-Bin , Tseng Wei-Lung
Published: August 2023

Gold nanoclusters (AuNCs) are promising nanomaterials for ratiometric fluorescent probes due to their tunable fluorescence wavelengths dependent on size and structure, as well as their biocompatibility and resistance to photobleaching.
Semi-supervised generative approach to chemical disorder: application to point-defect formation in uranium–plutonium mixed oxides
Authors: Karcz Maciej J. , Messina Luca , Kawasaki Eiji , Rajaonson Serenah , Bathellier Didier , Nastar Maylise , Schuler Thomas , Bourasseau Emeric
Published: August 2023

Semi-supervised generative machine-learning approach for the efficient computation of local-atomic dependent properties in chemically disordered (U, Pu)O2. Application to the formation energy and equilibrium concentration of point-defects.
Correlation between the structural features and intrinsic activity trend of Fe surfaces for ammonia synthesis
Authors: Chen Jianfu , Chen Ye , Wang Haifeng , Hu P.
Published: August 2023

The Haber–Bosch process, which was developed more than a century ago, remains the primary method for nitrogen fixation on a large scale and Fe is typically the main catalyst used in the process.
Improved NH3-SCR activity by the cooperation of FeVO4 and CeO2 nanosheet catalysts: structure and mechanism
Authors: Liu Yuqiu , Huang Biyi , Zhang Jianyi , Chen Yanting , Chen Jinsheng , Wang Jinxiu
Published: August 2023

The cooperation of FeVO4 and CeO2 nanosheets significantly improves NH3-SCR activity via the nanosheet structure with lattice defects and Fe–V–Ce interaction.
Recent progress in trivalent europium (Eu3+)-based inorganic phosphors for solid-state lighting: an overview
Authors: Singh Kasturi , Pradhan Priyadarshini , Priya Savita , Mund Sibani , Vaidyanathan Sivakumar
Published: August 2023

Narrow band red-emitting phosphors are significant constituents but still a bottleneck for next-generation smart displays and high-performance lighting (solid-state lighting based white light-emitting diodes (WLEDs)) technology.
Improvement of water adsorption performance of UiO-66 by post-synthetic modification
Authors: Fu Guodong , Wu Ping , Zhang Shiping , Wang Li , Xu Min , Huai Xiulan
Published: August 2023

The methods of defect modulation and post-synthetic ligand exchange (PSE) were combined to improve the water adsorption performance of UiO-66.
Recent progress in the stabilization of low band-gap black-phase iodide perovskite solar cells
Authors: Mittal Mona , Garg Rahul , Jana Atanu
Published: August 2023

This perspective presents a summary of diverse approaches used to stabilize the black phase of iodide perovskites, along with their practical implementation in photovoltaic devices.
Synthesis, characterisation and antibacterial activity of novel Ga(iii) polypyridyl catecholate complexes
Authors: More O'Ferrall Lewis , Piatek Magdalena , Twamley Brendan , Kavanagh Kevin , O'Connor Christine , Griffith Darren M.
Published: August 2023

Ga(iii) polypyridyl catecholate complexes exhibit antibacterial activity against Gram-negative bacteria and lead complex offers protection to G. mellonella larvae infected with P. aeruginosa.
Vanadium-catalysed regioselective hydroboration of epoxides for synthesis of secondary alcohols
Authors: Zhang Guoqi , Zeng Haisu , Tang Quan , Ates Selin , Zheng Shengping , Neary Michelle C.
Published: August 2023

A facile epoxide ring-opening hydroboration reaction catalysed by an active vanadium complex supported by a redox-active terpyridine ligand is reported for the synthesis of secondary alcohols under mild conditions.
The pitfalls of using stainless steel (SS) coin cells in aqueous zinc battery research
Authors: Wu Gang , Yang Yang , Zhu Ruijie , Yang Wuhai , Yang Huijun , Zhou Haoshen
Published: August 2023

Caution is essential when using SS coin cells in aqueous battery research due to the negative impact. We show that the commonly used SS coin cell provokes a severe hydrogen evolution reaction causing disruptive interference in Zn plating/stripping processes, which can be mitigated with a Ti spacer.
pH-responsive copper-doped ZIF-8 MOF nanoparticles for enhancing the delivery and translocation of pesticides in wheat plants
Authors: Xu Chunli , Cao Lidong , Liu Tingting , Chen Huiping , Li Yuanbo
Published: August 2023

Copper-doped ZIF-8 nanoparticles loaded with fludioxonil enhanced pesticide translocation in plants compared with use of free fludioxonil, providing insight into the use of stimuli-responsive metal-doped MOF nanocarriers as pesticide-delivery systems in sustainable agriculture.
Operando monitoring of gas bubble evolution in water electrolysis by single high-frequency impedance
Authors: Dastafkan Kamran , Wang Shuhao , Song Shuang , Meyer Quentin , Zhang Qiang , Shen Yansong , Zhao Chuan
Published: August 2023

A single frequency impedance method is introduced, based on an optimum high frequency of minimum phase and faradaic processes, to monitor gas bubble evolution during water electrolysis in operando.
Organosilane based magnetic silica nanoparticles for the detection of Al(iii) ions and construction of a molecular logic gate
Authors: Singh Gurjaspreet , Devi Anita , Saini Anamika , Diksha  , Thakur Yamini , Singh Riddima , Singh Jandeep , Kalra Pooja , Mohan Brij
Published: August 2023

The work describes organosilane magnetic silica nanoparticles, functioning as a fluorescent sensor: ‘ON’ for Al(iii) and ‘OFF’ for 4-NP. These nanoparticles also serve as an IMPLICATION logic gate by responding to added Al(iii) and 4-NP.
Electrostatically driven unidirectional molecular flux for high performance alkaline flow batteries
Authors: Nayak Bhojkumar , Mondal Ritwik , Ottakam Thotiyl Musthafa
Published: August 2023

Activation of electrostatic forces introduces a directional molecular transport parallel to diffusional transport, amplifying the performance metrics of alkaline quinone flow batteries.
Hemiacetal-based dynamic systems: a new mechanistic insight
Authors: Coufal Radek , Tošner Zdeněk , Drahoňovský Dušan , Vohlídal Jiří
Published: August 2023

The formation of hemiacetals from pyrazine trifluoromethylketone as a model receptor and four simple alcohols was studied by using quantum chemical calculations and NMR spectroscopy.
Recent advances in three-component radical acylative difunctionalization of unsaturated carbon–carbon bonds
Authors: Sun Jiaqiong , Wang Lihong , Zheng Guangfan , Zhang Qian
Published: August 2023

This review highlights the recent advances in radical acylated difunctionalization of unsaturated carbon–carbon bonds and focuses on the mechanistic insights of these transformations.
Recent advances in dynamic modeling and control studies of biomass gasification for production of hydrogen rich syngas
Authors: Hussain Maham , Ali Omer , Raza Nadeem , Zabiri Haslinda , Ahmed Ashfaq , Ali Imtiaz
Published: August 2023

Modeling strategies via Aspen Plus® for biomass gasification were assessed. Dynamic modeling can be essential in aiding control studies of biomass gasification process using Aspen Dynamics. Model predictive control is a widely recognized optimal controller for biomass gasification.
Predicting rejection of emerging contaminants through RO membrane filtration based on ANN-QSAR modeling approach: trends in molecular descriptors and structures towards rejections
Authors: Mousavi Setare Loh , Sajjadi S. Maryam
Published: August 2023

QSAR-ANN modelling was applied on ECs to predict the rejection of ECs by RO membrane and conduct explanatory study based the importance of selected descriptors.
Site-selective and metal-free C–H phosphonation of arenes via photoactivation of thianthrenium salts
Authors: Gallego-Gamo Albert , Reyes-Mesa David , Guinart-Guillem Axel , Pleixats Roser , Gimbert-Suriñach Carolina , Vallribera Adelina , Granados Albert
Published: August 2023

Aryl phosphonates are accessed by visible-light irradiation of new EDA complex between thianthrenium salts as electron-acceptors and phosphites as electron-donor molecules.
Flexible composite phase change materials with enhanced thermal conductivity and mechanical performance for thermal management
Authors: Li Shuang-Zhu , Zhou Yi-Cun , Wang Lu-Ning , Wang Shuai-Peng , Bai Lu , Feng Chang-Ping , Bao Rui-Ying , Yang Jie , Yang Ming-Bo , Yang Wei
Published: August 2023

Dual-supporting flexible composite PCMs with a uniform heat transfer network constructed by a proposed localized dispersion strategy realized an impressive performance balance, showing great potential in the field of thermal management.
Near-infrared light-activated ROS generation using semiconducting polymer nanocatalysts for photodynamic–chemodynamic therapy
Authors: Deng Yingyi , Ding Mengbin , Zhu Liyun , Zhang Yijing , Wang Fengshuo , Zhao Lingzhou , Li Jingchao
Published: August 2023

Semiconducting polymer nanocatalysts with near-infrared light-activated ROS generation are developed for photodynamic–chemodynamic therapy of cancer.
A biodegradable injectable fluorescent polyurethane-oxidized dextran hydrogel for non-invasive monitoring
Authors: Wang Xiao , Ou Yangcen , Wang Xiaofei , Yuan Lei , He Nan , Li Zhen , Luo Feng , Li Jiehua , Tan Hong
Published: August 2023

An injectable fluorescent hydrogel was successfully prepared by fluorescent polyurethane emulsion cross-linked with oxidized dextran for non-invasive monitoring.
Tunable emission in the visible range from a single organic fluorophore through time-controlled morphological evolution
Authors: Bhatta Ram Prasad , Kachwal Vishal , Climent Clàudia , Joshi Mayank , Alemany Pere , Choudhury A. Roy , Laskar Inamur Rahaman
Published: August 2023

This research article presents a novel method for achieving tunable colours (blue to red) from a single organic fluorophore. Emission tuning is associated with different self-assembled structures and aggregates size controlled by reaction time.
A self-healing and wearable hydrogel sensor with a dynamic physical cross-linking structure can detect strain stimulus in a wide temperature range
Authors: Zhang Xiaomin , Pang Juan
Published: August 2023

The conductive, anti-freezing and anti-drying hydrogels are synthesized by one pot polymerization. The hydrogel shows good mechanical properties and adhesion behavior.
Triplet conformation in chromophore-fused cyclooctatetraene dyes
Authors: Paul Sunandita , Kitakado Hidetsugu , Suga Kensuke , Kotani Ryota , Dey Nilanjan , Venkatramani Ravindra , Matito Eduard , Saito Shohei , Dasgupta Jyotishman
Published: August 2023

Cyclooctatetraene (COT) is predicted to have a planar aromatic triplet state. Using femtosecond-to-microsecond transient absorption spectroscopy, we show that acene chromophore-fused COT dyes also have a planar COT ring in their triplet states, although they are not aromatic.
Lane‐changing control with balancing lane flow at freeway merge bottlenecks in a connected vehicle environment: Application of a PID controller
Authors: Kim Yongju , Ka Dongju , Lee Chungwon
Published: August 2023

A merging section on a freeway is a typical bottleneck where congestion easily occurs due to interference caused by vehicles entering the mainline from the ramp. To achieve higher speeds and/or yield to merging vehicles, drivers on the mainline often change lanes while continuously examining the circumstances ahead that are within their sight. This individual lane‐changing behaviour is somewhat myopic and could cause an imbalance in lane use, resulting in earlier onset of congestion and a more severe capacity drop than with balanced lane use. This study proposes a feedback‐based lane‐changing control strategy that balances lane flow at merge bottlenecks to mitigate capacity drop under a connected vehicle environment. The proposed Proportional‐Integral‐Derivative feedback controller examines the traffic state of the inner lanes and systematically governs the number of lane‐changing vehicles to prevent possible excessive disturbance. The proposed strategy is evaluated using microscopic simulation. For the hypothetical network, the strategy reduces the imbalance in lane flows and improves discharge flow rate as well as travel time. For the real‐world network, the strategy can also effectively relieve congestion in a possible scenario of connected automated vehicle adoption. These results indicate that the proposed strategy can improve flow efficiency for high‐volume traffic.
The age, kinematics, and metallicity of nearby Sun-like stars and the history of the Milky Way disc
Authors: Gondoin P.
Published: August 2023

Contact. Investigating how the Milky Way formed and has evolved is an important topic in astrophysics that requires the determination of precise ages for large samples of stars over long periods.

Aims. The present study addresses the formation history of nearby Sun-like stars using the emission reversal in the cores of their Ca II H&K Fraunhofer lines as an age indicator.

Methods. I used an empirical age–activity relationship derived from stellar rotation period measurements in intermediate-age open clusters to infer the age distribution of a representative sample of nearby 0.85−1.0 M⊙ stars with −0.2 ≤ [Fe/H] ≤ +0.2. The evolution of the dispersion of their velocity components and of the mean iron abundance as a function of age is estimated.

Results. The inferred age distribution shows a steep rise in star formation in the solar neighbourhood between 7 and 6 Gyr ago, with a maximum formation rate ∼5 Gyr ago. This rate then decays until ∼2 Gyr and rises again in the recent past. The dispersion of the radial and vertical velocity components of the sample stars is the largest at the time of maximum star formation. Their mean iron abundance first decays from a super-solar value ([Fe/H] ∼ +0.05) ∼ 6 Gyr ago to a sub-solar value ([Fe/H] ≤ −0.05) ∼ 4 Gyr ago and rises again in the recent past.

Conclusions. This timeline is consistent with a scenario where the steep rise in the age distribution of nearby Sun-like stars around 7−6 Gyr is related to an external perturbation induced by a first close pericentric passage of the Sgr galaxy ∼6.5 Gyr ago. The Sgr galaxy would have been significantly stripped from its gas in this first encounter, thus explaining the weaker star formation during a more recent encounter ∼2 Gyr ago. The gas infall from the satellite galaxy onto the MilkyWay disc would have diluted its metallicity over an extended period of time after the first encounter. The turbulence induced in this initial encounter may be partly responsible for the increased dispersion of velocity components of the stars born around the age of maximum star formation. A continuous metal enrichment of the disc would have progressively compensated the decaying infall of low-metallicity gas leading to an increase in the mean stellar metallicity in the last 4 Gyr.
Impact of pandemic on supply chain development
Authors: Kuzubov Alexey , Maksimenko Aleksandr , Eremenko Igor
Published: August 2023

This article reveals the main aspects of the logistics situation development in the conditions of the COVID-19 pandemic, in particular, it highlights the main elements of the logistics companies functioning ensuring a competitive position in the market. The priority role of statistical data collection in logistics and verification of its development monitoring with high growth and expanded coverage of forecast indicators without taking into account the pandemic statistics is emphasized. At the same time, the main aspects of supply chain recovery, taking into account the pandemic, were identified and highlighted in such interrelations as identified signs, stocks, realistic consumption by efficient users, optimization of production and computing capacities, identification and use of logistics capacities, cash management and net working capital.
Using redundancy methods to build a maintenance and repair system in Burundi
Authors: Bigirimana Juvenal , Pavlov Alexey
Published: August 2023

The purpose of this paper is to ensure the maintenance and Repair system’s functioning in Burundi using redundancy methods, which include the organization of warehouse stocks of repair kits (units, repair kits) formed on the basis of the received results from studies on the damageability of structural elements of buses in Burundi. This approach will simultaneously ensure that all maintenance and repair requests are met when first needed, reduce vehicle downtime while waiting for repairs, and thus increase the efficiency of using ground transport and technological means. For the practical implementation of the task, a methodology for the strategy’s optimization for managing the stocks of circulating units in the conditions of Burundi on the basis of an analysis of various sources of literature and a method for size’s calculation of the circulating fund of units, spare parts and materials using modern mathematical models were developed. Costs of its creation, maintenance and replenishment in the context of Burundi were also estimated. As a result, it was shown after calculations that in the example of the OTRACO vehicle transport company it is possible to reduce the probability of bus downtime due to gearbox failure to 5%. The proposed method of redundancy with repair kits, especially in the conditions of Burundi, has an invaluable property; when it is implemented, the technical condition of buses, even despite the long service life, has a clear tendency to be improved.
Transport features of logistics
Authors: Juraeva G. , Mirzaev N. , Hamroev R. , Rustamov M.
Published: August 2023

One of the most essential core services affecting logistic service providers has been documented as globalization expansion. The efficiency of moving products is determined by the transportation method. The advancement of techniques and organizational norms enhances freight movement, delivery speed, service quality, procedure prices, facility usage, and energy conservation. Transportation plays an important role in logistics management. In light of the current situation, a strong system requires an intelligible logistics border as well as appropriate transport implements and strategies to connect the fabrication procedures. The goal of this study is to identify the critical elements that influence the logistics and transportation sectors as a result of globalization processes in the global economy. In this articlewe intend to solve the problems of effective management of the market of transport and logistics services have been studied in a number of countries around the world, especially in countries where market relations are being formed.
Estimation of parameters for endogenous hotspot emergence during coal cargo transportation by bulk carriers
Authors: Skripnik Igor , Savelev Dmitry , Kaverzneva Tatyana , Balabanov Valery
Published: August 2023

The article briefly describes the fire and explosion properties of coal raw materials (hard coal of different grades). The relevance of the problem is shown on the example of incidents occurring during transportation of coal raw materials by different modes of transport. The issues of bulk coal transportation are considered in more detail. The paper aims at determining kinetic parameters of low-temperature oxidation processes leading to self-heating and/or spontaneous combustion of coal, and at determining optimal forms of combustion. On the basis of the data obtained, it is suggested to use bulk cargo holds with strictly defined geometric characteristics. The methodological approach of Prof. J.S. Kiselev and the method of synchronous thermal analysis were chosen as the main method of research. The method proposed by J.S. Kiselev is based on the application of a dry-air thermostat. It permits the study of dependence of the occurrence of spontaneous combustion processes in the coal mass on the thermal-physical parameters and the ambient parameters by obtaining the curves of the heating and cooling rates. The method of synchronous thermal analysis applied by the authors made it possible to prove the need for more careful control of fine coal fractions. Thus, the authors have established the dependence of the rate of oxidative thermochemical processes of pyrolysis on the fractional composition of the sample by applying a highly scientific method. As a result of experimental studies, the authors have calculated the main kinetic parameters of autoignition, namely, activation energy and preexponential multiplier. They suggested geometric characteristics of the shape of the coal accumulation and the bulkhead hold that would minimise the probability of spontaneous combustion within coal accumulation.
Robust estimation of state vector coordinates in the controlled helicopter motion problem
Authors: Panteleev Andrei , Khvoshnyanskaya Elizaveta
Published: August 2023

The problem of finding H∞ – a observer of the state vector of a linear continuous non-stationary dynamical system with a semi-infinite time of functioning is considered. It is assumed that a mathematical model of a closed-loop linear continuous deterministic dynamical system with an optimal linear regulator, found as a result of minimization of the quadratic quality criterion, is known. For solving the state observer synthesis problem the reduction of the problem to a min-max optimal control problem is used. In this problem, the minimum of the quality criterion is sought by the observer’s gain matrix, and the maximum – by the external influence, measurement noise, and initial conditions. To solve this problem, the extension principle is applied and sufficient optimality conditions are obtained that requires the choice of auxiliary functions of the Krotov–Bellman type. As a result of the implementation of the procedure for choosing an auxiliary function and using the rules of matrix differentiation, relations for the synthesis of the observer and formulas for finding the best matrix of observer gains, as well as the laws for choosing the worst external influences and noise, were obtained. We find a solution to the problem of state vector coordinates estimation in the presence of limited external influences and disturbances in a linear model of the measuring system. As an example, the equations of motion of the Raptor-type helicopter are used.
Design of a container grabbing and lifting mechanism for equipping a robotic wheeled chassis
Authors: Filippov Rostislav , Semichev Stepan
Published: August 2023

This article presents the results of designing a mechanism for grabbing, lifting and holding a container with which it is supposed to equip a robotic wheeled chassis with an apple harvesting module in an industrial garden. The technical solutions used in agricultural engineering for lifting and holding operations of various types of loads weighing from 300 kg were analyzed, their design and technical features were considered. As a result of the analysis, based on the criteria of compactness and metal consumption, the most preferred variant of the lifting mechanism was selected - a parallelogram lifting mechanism driven by electric cylinders. In order to fulfill the conditions of structural strength of the mechanism for gripping and lifting the container, a strength calculation of the structure was carried out, and also the necessary characteristics of the electric cylinder for the mechanism for lifting the container and the paws for the mechanism for lifting the paws were determined. The main load in the structure is carried by the upper horizontal guides, vertical racks and lower grips. As a result of the analysis, zones of maximum stress and strain concentration were established. The loading of the lower gripper parts occurs with a force directed vertically downward with a force of 1750 H. The highest voltage was about 169 MPa, which ensures sufficient strength of the part with a margin of 3 times, the maximum movements of the guides are 1.6 mm.
Impact of digital marketing on the aviation industry
Authors: Keke Mehmet Emin
Published: August 2023

It is very important for businesses to follow technological developments closely. They also need to develop themselves in the field of digitalization. In this way, they will be able to protect themselves in an intense competitive environment. Aviation is a very dynamic industry. This business uses the latest technologies, but the technology used is constantly changing. Therefore, states and entrepreneurs need to invest heavily in aviation. The aviation sector is of great importance in terms of the policies and strategies of states. Regardless of profit or loss, the aviation industry is given special importance. Digitalization is seen as a very important factor in terms of economy in the globalizing world. With the digital age, new employment areas are created. Since digitalization has become universal, all countries of the world are trying to keep up with this situation more or less. With digitalization, the workload of employees is reduced. Firms fulfill the demands of their customers more easily and increase the satisfaction of their customers. On the other hand, thanks to digital marketing, more consumers are reached than traditional marketing. The aviation industry arouses curiosity in consumers with its digital marketing strategies. In this study, the aviation industry and its digitalization, digital marketing, the effects of digital marketing strategies on the aviation industry were examined.
Integrated microelectronic pulse shaper for automation and telemechanic systems in railway transport
Authors: Azizov Asadulla , Ametova Elnora , Shakirova Feruza
Published: August 2023

The significance of the production of the integrated microelectronic pulse shaper, which is used in railway automation and telemechanics systems, plays an important role in ensuring the safety of train traffic, and can completely replace track and pendulum transmitters, and the electrical circuits of the device are presented based on research and the principles of using microelectronic devices in the production process. It has been experimentally proven that the integrated microelectronic pulse shaper works without interfering with each other in the production of parallel codes. Values calculated on the basis of the Bayesian method of diagnosing the reliable operation of the device are presented. These values were verified in the experiment by connecting the device to the actual operating system at a real station.
Mathematical support and software systems for spare parts management of grain harvesting machinery
Authors: Nikitchenko Sergei , Seregin Aleksandr , Ignatieva Olesya , Husainov Vladimir
Published: August 2023

Agricultural production is characterized by the seasonality of technological operations, the ability to carry out which in a strictly set time depends on many factors of the external environment and the reliability of agricultural machinery. The harvest of grain and other crops by combines occupies a special place among field works. Operative carrying out of these works without down time of the grain-harvesting techniques provides the minimum losses of the agricultural production. It is possible to minimize downtime of harvesters due to technical reasons if the enterprise has at its warehouse a seasonal reserve of spare parts that are in great demand during harvesting works. The methods of reserve calculation should consider not only the reliability of some harvester parts, but the cost damage of harvester downtime and extra costs of spare parts purchase and storage. With such a large number of external factors, traditional methods are difficult to calculate. With the development of computer technology, the methods of evolutionary calculations have been widely used, in particular, genetic algorithms that allow creating self-adjusting models capable of analysing the examined indicators for the past years, reacting to the changes of current external conditions, and making short-term forecasts of the values of optimised variables. The purpose of this research was to develop a genetic algorithm and software that will enable us to meet the seasonal demand for spare parts from combine harvesters. The software allowed us to identify 66 of the most in-demand items out of 2800 warehouse items that should be reserved for the season of harvesting crops. The efficiency of the proposed solutions is proved by the reduction of the downtime of combines due to technical reasons by 37% and the increase of their shift productivity by 11.4%; at the same time, the combine reliability index, the operational readiness factor, increases by 4.38%.
An initial study of quality assurance techniques for automated water level control systems
Authors: Kartbayev Amandyk
Published: August 2023

This study aims to formulate requirements for models and programs of cyber-physical systems through an investigation of existing approaches to dynamic verification of control programs. Building on this research, we propose a formal model for dynamic verification of process-oriented control programs in cyber-physical systems. Additionally, our goal is to develop a software package based on the proposed methods and models. The research focuses on hyperprocesses, which involve multiple interacting processes with executable states. The complexity of the models being created and the prevalence of routine operations present challenges in applying formal methods to their verification. Neglecting the verification of process-oriented software poses significant risks in system development. Therefore, addressing this challenge involves research and development of dynamic software verification methods that combine testing and simulation techniques.
Review article: enhancing the power of artificial intelligence in mechanical design
Authors: Magomedov Islam , Belashova Elena , Bersanov Magomed-Deni
Published: August 2023

Artificial intelligence-powered tools are emerging lately due to the improvement of computational power and advancements in other fields. This technological progress has led to the emergence of many tools that are able to perform tasks, and even outperform humans, leading to the automation of many processes. However, this also comes with certain limitations. This work will explore generative design and its primarily application in mechanical engineering. The study will present how generative design is reshaping mechanical engineering by optimizing structures and discussing the limitations of this technique.
Investigation of wind effects on the design of a mobile radar antenna panel
Authors: Solomatin D. A. , Shumskaia S.A.
Published: August 2023

This paper presents the static calculation of the mobile radar station antenna fabric design, taking into account the action of its own weight of the load-bearing structure products combined with the load from the limit wind flow. Part of the load-bearing elements are made of the advanced orthotropic material alumoglass plastic, which will allow to significantly gain in weight while maintaining the necessary rigidity and strength. On the basis of aerodynamic calculation, the cases of maximum loading of antenna fabric have been chosen. The possibility of using products made by SLM technology in especially stressed and critical products has been considered.
Analysis of damage to 35 kv cable lines in the Districts of Tashkent
Authors: Yaxyayeva Shoxida , Pirmatov Nurali , Egamov Akmal , Berdiyorov Ulmas , Isakov Farxod
Published: August 2023

The article analyzes the damage to the cable line 35 kV in the regions of Tashkent. According to the analysis results, electrical damages in the districts of Tashkent city were detected more often in Shaikhantakhur, Yunsabad, Yashnabad and Almazar districts than in other districts. Electrical damage was mainly in the sleeve -51%, in the cable – 43% and in the funnel – 6%. Moisture, corrosion, mechanical wear, manufacturing defects and other factors are the main causes of this damage.
Building a 3D model of hydraulic structures using BIM technology
Authors: Kasimov J.A. , Kamilov A.I. , Mustafoyeva D.A. , Nasritdinova U.A.
Published: August 2023

In the article, the role of graphic programs in the engineering sciences in the educational system, especially in technical higher education institutions, through them, we can see that the issues related to Build Art technologies, which are the demand of today, can be easily and conveniently solved. The ability to analyze the spatial properties and tasks of subjects is an important component of the graphic preparation of students. In the field of graphic education, development of students’ spatial imagination, imaginative analysis of spatial images have been adding a significant share to the creation of content.
Development of design principles for modular hydraulic turbines for small and micro HPP’s
Authors: Liamasov Alexander , Yuriev Dmitriy , Kuftina Anna , Denisov Konstantin
Published: August 2023

The article discusses the fundamentals of developing a methodology for designing modular hydro units for small and micro hydropower plants (HPPs), as well as the advantages of such hydro units. A methodology for forming and restricting the normal nomenclature of hydro turbines based on probabilistic analysis of a range of energy parameters most commonly encountered in Russia is proposed. Unlike traditional hydro turbines, a modular execution of the main units of the modular hydro turbine is proposed, which will allow for serial production. Based on calculations and data analysis, optimal fields of applicability for the designed hydro turbines have been constructed. Structural analysis of modular hydro units has been conducted.
Improvement of the scientific bases of creating means of automation of documentation of devices of railway automation and telemechanics
Authors: Baratov Dilshod , Astanaliev Elmurod
Published: August 2023

The scientific principles of improvement of automation information for appliances of automation and telemechanics system consisting of integration of technology of conducting, use of the uniform standard format and reference information, succession of databases of technical documentation information is created. As a result, the possibility of optimal selection and functional completeness of software for monitoring operational and technological processes was created. The principles and methods of building electronic document management systems using the decomposition of the documentation process to a set of elements and their relationships are developed. The system of organization, control and use of technical documents in the field of automation and telemechanics, systematized through the characteristics of the created scenarios and technical documents of device control and their information, is considered.
Improvement of service technology on railway branch roads
Authors: Qobulov Jamshid , Barotov Jamshid , Shermatov Elbek , Fayzullaev Gaybullo
Published: August 2023

The article highlights the issues of effective use of shunting locomotives by introducing shunting winches on branch lines of railway transport, as well as improving the technology of effective service for freight forwarders. For this, the article envisages achieving it by optimizing the sequence of execution of several technological processes. Including: the time it takes for one wagon to be occupied for entering and exiting the branch tracks, the number of wagons entering and exiting the branch tracks during the time interval in question, as well as revising the locomotive occupancy times depending on the wagon, freeing the shunting locomotive from additional inefficient work issues of more efficient use of shunting locomotives by introducing shunting winches are scientifically based.
Binomial distribution of railway superstructure elements
Authors: Korolev Vadim
Published: August 2023

Statistical methods of control of point components and quality of point products are an integral part of modern point production, and their application is closely connected with solving tasks of increasing labour productivity and general enterprise culture, saving materials, and reducing defects. The paper presents a derivation of basic formulas for a binomial distribution of elements of the railway track superstructure. Calculation of theoretical distribution is made. The interrelation between probability theory, statistics, and quality control of point products is considered.
Influence of hydrogeological and hydrological factors on stability of railways in areas of permafrost distribution (example of Far East Road, Russia)
Authors: Melnikov Andrey , Rochev Viktor
Published: August 2023

In 2019, the Institute of Permafrost of the Siberian Branch of the Russian Academy of Sciences and the Northwest Institute of Eco-Environment and Natural Resources of the Chinese Academy of Sciences concluded the agreements on joint research work. They decided to study the evolution of frozen soils at the base of roads and the territory adjacent to them, as well as to justify a set of measures to stabilize the permafrost situation. The works provide the study of the reaction of permafrost along the routes of railway lines in Russia and China. In Russia, the parties are examining in detail individual sections of the Far Eastern and Trans-Baikal railways. We present the results of surveys on one of these sections: a segment of the track dedicated to the Tynda station of the Far Eastern Railway. The object of research is very indicative from the point of the need to assess the dynamics of geocryological conditions in the strip of long-term operated linear structures. Here, the deformations of the roadbed have been manifested almost since the end of its construction (1974). Despite the implementation of several technical solutions in the form of cooling structures aimed at maintaining the soil temperature at the base of the structure in a frozen state, at present, the road is still subject to deformations. According to the current research results, it was revealed that the main reason for their occurrence is the flooding of the territory due to both natural and anthropogenic factors.
Using BIM for building maintenance management in Iraq
Authors: Al-behadili Karrar Abbas , Ali Yusuf Mohamed , Asser Elsheikh
Published: August 2023

Owners are responsible for performing necessary maintenance on their buildings, and they should do so whenever possible to maintain capital and ensure people’s safety while using the buildings. Lack of information and data prevents construction managers from effectively managing building assets and making decisions during the operation and maintenance phases. In Iraq, a large portion of the data used from building managers is still on paper. Construction managers face challenges due to a lack of information and data when making decisions about building assets during the operation and maintenance phases. It is clear today that the construction industry is witnessing significant growth in a numerous of areas, particularly as the sector’s demand for labor and materials grows. Building information modeling (BIM), which has grown to be closely related to all aspects of the project at various stages from planning through construction to project closing, is one of the most essential aspects of rapid development. This article presents the use of Building Information Modeling (BIM) for construction facility management. One of the purposes is helping to reduce maintenance costs and extend the life of project components. The study’s aim is to determine the impact of integrating building information modeling with maintenance management 6D/BIM by presenting a methodology utilizing BIM-FM workflow and the creation of a user-friendly comprehensive system which include information about the facility and components as well as maintenance, in addition to identify the barriers to using 6D/BIM in construction industry.
Technological methods of improvement and influence on the rotor rotation speed on efficiency of barley hushing machine
Authors: Baltabaev Ulugbek , Jonimqulov Mirtemir , Abdullayeva Feruza , Kuriyozov Zarif
Published: August 2023

The article provides the results of a study of the impact of different parameters and the process of peeling barley in the production offeed. Theoretical studies and analysis of the structures of the peelers and the proposed horizontal peeler have suggested that the rational rotation rate of the rotor during barley peeling will be between 1500 and 1800 rpm. After the studies, a number of factors were tested which influenced and increased the efficiency of barley peeling, which determined the effect of rotor rotation frequency, processing duration, the amount of product pass through processing during, the peeler. Based on the research, the technological parameters of the peeler have been developed andimproved.
The natural vibrations of shell structures taking into account dissipative properties and structural heterogeneity
Authors: Khudainazarov Sherzod , Mavlanov Tulkin , Umarova Feruza , Sabirjanov Talibjan
Published: August 2023

The paper considers the natural oscillations of shell structures. In general, these structures are a set of deformable elements with different rheological properties. An algorithm for solving the viscoelastic dynamic problems has been developed for the complex axisymmetric structures. The physical properties of the viscoelastic structural elements are described by linear Boltzmann-Voltaire relations with integral difference cores. The three-parameter core of Rzhanitsyn-Koltunov was used as the relaxation core. In general, the problem is reduced to solving the systems of first-order ordinary differential equations in the complex variables. A frequency equation is obtained, for the solution where the Muller method is applied. The calculated values of the natural frequencies of oscillations with a given degree of accuracy are given.
Models for implementing blogs from the perspective of sustainable media development
Authors: Gaibaryan Olga , Shirina Elena , Myasischev Georg
Published: August 2023

The information leap in demand for online products during the global pandemic has formed an aggregate, integrated part of the world’s media system on the scale of the Internet’s unified information space. Their sustainable development is a necessary element of media development in general. This study shows the upwardly steady tendencies of blogosphere development as a relatively new mass media trend. The article deals with the typology of blogs and reveals the regularities of their integration into the culture of modern mass media and Internet users. Blogs are an aggregate of various elements: artistic, graphic and illustrative; they have different forms of presentation and perform specific functions. As a body of information they complement each other. The system of elements is arbitrary and inconstant, but it is the way they are organized on a given site that determines the features that are striking immediately upon reading the blog materials. Each element performs a well-defined function, “working” towards the goal, the intended totality, as shown in the article.
The role of business English in modern logistics
Authors: Mustaeva G. , Ataeva G.
Published: August 2023

The article considers the issue of the English language as a universal means of communication for specialists. T he author provides data on the leading position of the English language and its role for business. To update the value of English for logistics, the article reveals answers to the following questions: what is the approximate number of basic scientific terms in logistics, how they are distributed in the areas of logistics, what terms are most used, what sciences logistics is associated with, how many terms logistics uses from related sciences. The study was carried out using the linguo-statistical method of the English dictionary of logistics and authentic texts. The author concludes that English proficiency in logistics is the key to successful business.