bluuebunny/crossref_metadata_2025 huggingface dataset:
N-heterocyclic carbene-ligated metal complexes and clusters for photocatalytic CO2reduction
Authors: Jiang Yilin , Fei Honghan
Published: May 2023

N-heterocyclic carbenes are structurally versatile ligands, which have strong σ-donor properties to form covalent bonds with metal centers. This frontier article provides a review on active NHC-stabilized metal complexes and clusters for photocatalytic CO2reduction.
Synthesis, properties and application of o-carborane-based π-conjugated macrocycles
Authors: Qu Qi , Fu Meigui , Lin Caixia , Geng Yanhou , Li Yuanming , Yuan Yaofeng
Published: May 2023

Two o-carborane-based π-conjugated macrocycles were synthesized. Single-crystal structures revealed their micropore characteristics. These macrocycles exhibit aggregation-induced emission and selective identification.
Disulfides as versatile starting reagents: effective sulfonylation of alkenes with disulfides under electrochemical conditions
Authors: Mulina Olga M. , Doronin Mikhail M. , He Liang-Nian , Terent'ev Alexander O.
Published: May 2023

The unexpectedly effective use of disulfides as S-partners in electrochemical C–S coupling is demonstrated.
Uranium hydroxide/oxide deposits on uranyl reduction
Authors: Ouchi Kazuki , Matsumura Daiju , Tsuji Takuya , Kobayashi Tohru , Otobe Haruyoshi , Kitatsuji Yoshihiro
Published: May 2023

We clarified the chemical reaction of deposits following the electrolytic UVIO22+ to UVO2+ reduction.
Dynamics of ball chains and highly elastic fibres settling under gravity in a viscous fluid
Authors: Shashank H. J. , Melikhov Yevgen , Ekiel-Jeżewska Maria L.
Published: May 2023

Ball chains in experiments and highly elastic fibres in simulations deform in a similar way while settling under gravity in a very viscous fluid. New features of their short-time dynamics are outlined.
Nacre-inspired strong nanopapers of aramid nanofiber-integrated montmorillonite nanoplates, cellulose nanofibrils, and Ag nanowires for high-performance electrical heaters
Authors: Hu Fugang , Zeng Jinsong , Li Pengfei , Wang Tianguang , Li Jinpeng , Wang Bin , Chen Kefu
Published: May 2023

We developed a nacre-inspired ANF-based nanopaper and introduced AgNWs to provide it with electrical heating capability. The nanopaper exhibited exceptional δc (488.48 MPa) and electrical heating properties, suitable for high-end electronics.
Magnetically actuated hydrogel-based capsule microrobots for intravascular targeted drug delivery
Authors: Qiao Shishuai , Ouyang Hangkong , Zheng Xiaoguang , Qi Chongwen , Ma Li
Published: May 2023

A triaxial microfluidic chip and a magnetic drive system developed in this paper greatly reduce the complexity and cost of the system. The prepared capsule microrobots have excellent potential for drug delivery in similar vascular microchannels.
Regulated self-powered photoresponse properties and irradiance-adaptable behavior in ferroelectric SrTiO3/TiO2 heterojunction photodetectors
Authors: Gao Songyao , Xu Jianping , Shi Shaobo , Chen Jing , Xu Jianghua , Kong Lina , Zhang Xiaosong , Li Lan
Published: May 2023

SrTiO3/TiO2 core–shell nanorod arrays were synthesized using a simple two-step hydrothermal method, and a self-powered irradiation-adaptive photodetector controlled by a ferroelectric depolarization field was designed.
Key allosteric and active site residues of SARS-CoV-2 3CLpro are promising drug targets
Authors: Al Adem Kenana , Ferreira Juliana C. , Fadl Samar , Mustafa Morad , Rabeh Wael M.
Published: May 2023

The main protease of SARS-CoV-2, 3-chymotrypsin-like protease (3CLpro), is a prominent target for antiviral development due to its essential role in the viral life cycle. Research has largely focused on competitive inhibitors of 3CLpro that target the active site. However, allosteric sites distal to the peptide substrate-binding region are also potential targets for the design of reversible noncompetitive inhibitors. Computational analyses have examined the importance of key contacts at allosteric sites of 3CLpro, but these contacts have not been validated experimentally. In this work, four druggable pockets spanning the surface of SARS-CoV-2 3CLpro were predicted: pocket 1 is the active site, whereas pockets 2, 3 and 4 are located away from the active site at the interface of domains II and III. Site-directed alanine mutagenesis of selected residues with important structural interactions revealed that 7 of 13 active site residues (N28, R40, Y54, S147, Y161, D187 and Q192) and 7 of 12 allosteric site residues (T111, R131, N133, D197, N203, D289 and D295) are essential for maintaining catalytically active and thermodynamically stable 3CLpro. Alanine substitution at these key amino acid residues inactivated or reduced the activity of 3CLpro. In addition, the thermodynamic stability of 3CLpro decreased in the presence of some of these mutations. This work provides experimental validation of essential contacts in the active and allosteric sites of 3CLpro that could be targeted with competitive and noncompetitive inhibitors as new therapeutics against COVID-19.
Contribution of Working Memory and Inferencing to Narrative Discourse Comprehension and Production in Traumatic Brain Injury
Authors: Lê Karen , Coelho Carl , Feinn Richard
Published: May 2023

Purpose:

The goal of this study was to identify some potential key cognitive and communicative processes underlying narrative discourse ability following traumatic brain injury (TBI). Specifically, this study (a) investigated the contribution of working memory (WM) and inferencing to narrative discourse comprehension and production; (b) tested key assumptions posited by the Structure Building Framework (SBF), a discourse model; and (c) evaluated the potential for inferencing to contribute to discourse ability beyond a shared variance with WM.

Method:

Twenty-one individuals with TBI completed six tasks yielding seven measures: verbal and nonverbal WM updating (WMU-V and WMU-NV, respectively), predictive inferencing, the Discourse Comprehension Test (DCT), a picture story comprehension (PSC) task, and story retelling (story grammar and story completeness). Regression analyses were performed using WM and inferencing as predictors for narrative performance.

Results:

WM measures were significant predictors of DCT performance and approached significance as predictors of PSC. Inferencing approached significance as a unique predictor for the DCT and story completeness. WMU-V and WMU-NV were highly collinear, and neither WM measure predicted discourse outcomes over and above the other's contribution.

Conclusions:

WM was more strongly associated with comprehension processes, whereas inferencing may be associated with both comprehension and production outcomes. Findings were interpreted as supporting SBF assumptions of domain generality of cognitive processes and mechanisms involved in discourse while also challenging assumptions that the same cognitive substrates are marshaled for comprehension and production processes.

Supplemental Material:

https://doi.org/10.23641/asha.23148647
Calculation of a fiber–reinforced concrete specimen based on the orthotropic model
Authors: Tyukalov Yury
Published: May 2023

The calculation of fiber-reinforced concrete is performed by the finite element method using the stresses approximations. The solution is based on the additional energy functional. The nodes equilibrium equations are obtained using the possible displacements principle. To take into account the nonlinearity of concrete deformations, an orthotropic model is used in the plane case. The solution of the nonlinear problem is performed by the method of variable elasticity parameters. The paper gives a calculation result of a tension specimen.
Viscosity characteristics compositions based on PAA, PVS and NA-CMS
Authors: Amonov Muxtar , Shodiyeva Shoira , Ismatova Rano , Ganiev Bakhtiyor
Published: May 2023

The influence of the composition and method of preparation of gelatinized starch compositions on their relative viscosity is studied. The activation energy of the viscous flow of gelatinized starch and developed formulations was determined. The change in the viscosity of starch and developed polymer dressing compositions from time to time is studied.
An approach to assessing the level of competitiveness of a timber industry innovative enterprise based on the methodology of economic and mathematical modelling
Authors: Shanin Igor
Published: May 2023

The article proposes an approach to assess the level of competitiveness of timber industry enterprises, as an example, furniture enterprises that carry out innovative activities and produce innovative products are considered. The principles of economic and mathematical modelling form the basis for the assessment of the improved methodology. In the improved methodology, a group of weighting coefficients is proposed that make it possible to most accurately determine the level of competitiveness of an innovative enterprise according to the proposed economic and mathematical model, but taking into account the implementation of all stages in the algorithm developed by the author to increase the level of competitiveness of an innovative forestry enterprise. The general integral indicator of the level of competitiveness of the analysed enterprise is calculated. Based on the formed economic and mathematical model, an assessment of the level of competitiveness of an innovative furniture enterprise was carried out. It was determined that in the analysed enterprise it is necessary to pay attention to the factors of competitive and strategic positioning (0.61 in 2020) and trade and production efficiency (0.82 for the reporting period), the values of the coefficients of which are at the minimum level.
Implementation of a neural network in overhead crane control
Authors: Kozhubaev Yuriy , Ovchinnikova Elena , Krotova Svetlana , Murashov Yuriy , Nushtaev Nikita
Published: May 2023

This work is aimed at proecting an automated control system for an overhead crane based on a neural network, which will replace the operator, but it is possible to transfer this control back to the operator. The paper considers an approach to the development of the necessary software for the correct operation of the crane, the choice of equipment suitable for the task. The final part describes the program blocks necessary for operation, as well as locks.
Estimating the modelling of polymer materials’ optical density rate
Authors: Safayeva Dilafruz , Bulanov Ismailjan , Shin Illarion
Published: May 2023

Mathematical representation of reality is one of the variants of a model as a system, the study of which allows obtaining information about some other system. The mathematical model, in particular, is designed to predict the behavior of a real object. All natural and social sciences that use the mathematical apparatus, in fact, are engaged in mathematical modeling: they replace the object of study with its mathematical model and then study the latter. With the help of mathematical methods, as a rule, an ideal object or process is described, built at the stage of meaningful modeling. The connection of a mathematical model with reality is carried out with the help of a chain of empirical laws, hypotheses, idealizations and simplifications. A mathematical regression model has been developed that takes into account the influence of the speed of printing equipment and pressure on the optical density of the print when printing on non-absorbent surfaces using the gravure printing method.
System for recognising and monitoring the technical condition of construction machines
Authors: Minh Nguyen Trong , Zorin V.A
Published: May 2023

Assessing and predicting machine reliability and failure risks is an essential requirement of international standards for machine safety. The existing methods for determining reliability indicators and risk assessment are based on statistical information about failures and faults that occur during machine operation. Collecting, accumulation and processing of statistical data about failures of machines by traditional methods does not provide the necessary efficiency and reliability of the received information. In this connection forecasting of reliability, estimation, and risk management in production and operation of machines with necessary reliability is not a simple task. Modern diagnostic systems offer unlimited possibilities for the timely acquisition and transmission of information concerning the technical condition of machines, which can be used for the solution of problems. Depending on the structure and location of the transmission, storage and processing of the information, a distinction is made between stationary or remote diagnostics systems. With the modern development of communication and data transmission, remote systems are improved versions of stationary diagnostic systems. In the article the questions of formation of a recognition system and monitoring of a technical condition of building machines by means of the diagnostic information are considered. The main purpose of the development and implementation of the system is to ensure the reliability and safety of operation of construction machines. In order to solve this problem, it is necessary to recognize and promptly prevent the occurrence of failure, which requires the allocation of a special class of intermediate states, called pre-emergency. The results of the implementation of the recognition and monitoring system of construction machines with the help of diagnostic information are presented.
Liquid metal dealloying combined with polymer impregnation as novel promising technology for bioHEA-based implant manufacturing
Authors: Okulov A. V. , Iusupova O. S. , Kazantseva N. V.
Published: May 2023

The paper provides a short review of liquid metal dealloying (LMD) combined with subsequent polymer impregnation as promising technology to synthesize low modulus metal-polymer composites for biomedical applications. The introduction presents the key problems and relevance of the development and synthesis of such materials. The “Theoretical basis” chapter defines the LMD method and the main steps required to activate this process. The fundamental principles of thermodynamics, kinetics and morphology evolution of LMD process are presented here. Due to their favorable mechanical characteristics in the context of biomedical applications, the so-called biocompatible high-entropy alloys (bioHEAs) are proposed as promising candidates for LMD treatment combined with polymer impregnation and, accordingly, the synthesis of novel metal-polymer bioHEA materials.
On the question of the radius of elementary particles
Authors: Safonova Nina
Published: May 2023

This article belongs to the field of theoretical physics, specifically the study of elementary particles. We discuss the parameters of elementary particles, their interactions with gravitational potential and magnetic fields, stability with respect to their lifetimes, as well as interactions between particles with different parameters, including different masses. We clarify the concept of electric charge for particles. We use methods and formulas from classical physics that are accessible to a wide range of interested individuals.
Retrospective analysis of innovative activity of business entities in the conditions of transformation
Authors: Kurpayanidi Konstantin
Published: May 2023

Objective. To conduct a theoretical analysis of the categories “innovation” and “innovative activity”. To prove, from the standpoint of historical dialectics, that innovation is an endogenous source of economic growth. Methods. The study used a systematic approach, retrospective analysis, abstract-logical analysis, grouping, comparison, factor analysis. Results. In the current conditions of instability of the world economy, the issue of its further development, including from a technological point of view, is relevant. In historical retrospect, the emergence of technological innovations on the market had a positive impact on the process considered in the study. The recognition of innovation as an endogenous source of economic growth is due to the nature of the post-industrial economic structure, characterized by the decline in the role of traditional factors of production in the formation of competitive advantages of individual producers, as well as the formation of a qualitatively new type of progressive macroeconomic dynamics. In these conditions, the innovative activity of business entities becomes particularly relevant. The article considers various approaches of scientists and representatives of various economic schools to the definition of the concepts of “innovation” and “innovative activity”. Conclusion. Based on a retrospective analysis of a number of scientific papers devoted to innovation, it is concluded that in order to ensure the successful and dynamic development of an enterprise producing high-tech products, it is necessary first of all to widely apply various methods of innovation management, which should include simultaneous and coordinated use of technological, scientific, personnel, commercial and other policies that provide a systematic solution to the problems of innovative development.
Protection of the phonogram producer as a factor in sustainable development
Authors: Petkilev P.
Published: May 2023

The purpose of this paper is to define the essence of the phonogram producer in the context of sustainable development. The paper uses methods of analysis and the comparative legal method. It has been argued that the phonogram producer has the right to conclude a licensing agreement and not to transfer the physical medium containing the phonogram. However, the medium itself is analogous to the “tradicio” known in Roman law. Thus, it is justified that, under this approach, intellectual property in the form of phonograms would circulate faster and a higher volume of transactions may have a positive impact on economic growth, which is one of the goals of sustainable development.
Hydrometallurgical processing of pyrite concentrates from Yoshlik deposits
Authors: Umarova I.K. , Amindjanova S.I. , Salidjanova G.K. , Bekpulatov J.B. , Djumaeva Kh.Yu.
Published: May 2023

The work aimed to develop a rational technology for processing ore from the Yoshlik deposit, taking into account the solution of issues of the integrated use of mineral raw materials and environmental protection, and the development of a technological scheme. To enrich the ore of the Yoshlik deposit, a combined gravity-flotation technological scheme was recommended, followed by sorption cyanidation of the pyrite concentrate. According to the results of research on the results of sample the ore of the Yoshlik deposit, it was revealed that pyrite flotation is required to enrich the ore. Without pyrite flotation, gold recovery is low from 52 to 68%, with the use of pyrite flotation, the recovery increase is up to 24%. The specified purpose of the work follows the need to solve the following problems: compilation of a literature review on the current state of enrichment of copper ores; study of the material composition of ore samples from the Yoshlik deposit; experimental substantiation of the influence of various factors on the concentration of ore. In the ore sample of the Yoshlik deposit, gold is unevenly distributed by size classes, the precious metal is concentrated mainly in sludge classes.
Environmental impact consideration in the measures to improve the builders of different specialties working conditions
Authors: Sazonova Svetlana , Zolnikov Vladimir , Zolnikov Konstantin , Anikeev Evgeny , Evdokimova Svetlana , Groshev Artem , Grosheva Ekaterina
Published: May 2023

The paper considers working conditions characterized by the presence of harmful and dangerous factors of the natural and industrial environment, as well as the functional body state of builders performing various jobs. As the subject of scientific research, the levels of harmful and dangerous factors of the labor process in the warm and cold periods of the year and physiological indicators characterizing the dynamics of changes in the functional body state of builders working on open construction sites under the influence of the environment were chosen. The purpose of the research is to develop measures to create safe working conditions, as well as to improve the performance and maintain the health of builders. To achieve this goal, the following tasks were solved: the hygienic features of the working conditions of construction work were determined and the leading natural, industrial, harmful and dangerous production factors were identified; the quantitative and qualitative characteristics of harmful factors and the reasons for their formation were studied; professional characteristics of the work of builders with an assessment of the severity and intensity of the labor process were given; a set of measures aimed at optimizing working conditions and maintaining the health of builders was developed. The paper notes that the whole complex of harmful production factors affects the functional state and performance of builders of various professions.
Influence of resource-saving technologies, planting density, variety rootstocks on pear yield
Authors: Yunusov Rustam , Yuldoshov Laziz , Ikramova Makhbuba
Published: May 2023

The Bukhara region has continental climatic conditions and a tendency to salinity. Growth, development, productivity and its quality in newly created dwarf intensive pear orchards under drip irrigation have been studied. 3 varieties were studied - Williams, Abbot and Carmen and 6 planting patterns (4.0 x 1.0 m, 4.0 x 1.2 m, 4.0 x 1.4 m, 4.0 x 1.6 m, 4.0 x 1.8 m, 4.0 x 2.0 m), with medium-sized rootstocks on dwarf trees using water and resource-saving technologies. The correct methods of forming and pruning dwarf pear trees have been determined. The selection of tree crowns using optimal methods of protection against complex pests and diseases has also received scientific justification. Due to the correct distribution of light along the branches of trees, the aeration of pear orchards improves, which causes significant processes of growth, development and accumulation of fruit elements. As a result, it was found that the yield of 3-year-old young intensive pear orchards grafted on a medium-sized rootstock Quince C1 with drip irrigation, water consumption decreased by 2 times compared to traditional irrigation, and the yield increased to an average of 1.6 kg per tree
Issues of children's health ecology in Karaganda region (mid-1940s)
Authors: Kozina Valeria , Abdukarimova Zhanara , Baigozhina Gulnar , Saktaganova Zauresh , Mazhitova Zhanna , Kurbanova Dina
Published: May 2023

The article deals with the medical care of children during World War II through the system of hospital and non-hospital care in Karaganda region. The struggle against epidemiological diseases has become one of the primary tasks of the doctors. Prevention of such diseases as measles, diphtheria, dysentery, whooping cough, etc. was carried out by vaccination, revaccination, strengthening of infant nutrition and other measures. Gastrointestinal diseases were also among the causes of infant mortality. The fight against gastrointestinal diseases was also an urgent task of the health authorities during the war years. Nurseries were a necessary measure of assistance to working women during the war. The nurseries were under the jurisdiction of the People's Commissariat of Health. The authorities carefully monitored the health of Soviet children, and prevented the mass spread of infectious and gastrointestinal infections among children of Karaganda region.
Ecology of childhood health in Central Kazakhstan during the development of Virgin Lands
Authors: Shapagatova Diana , Baigozhina Gulnar , Abdukarimova Zhanara , Saktaganova Zauresh , Mazhitova Zhanna , Kurbanova Dina
Published: May 2023

The article presents the results of historical and medical research showing the issues related to fighting against intestinal infectious and pulmonary diseases among Kazakhstani children during the development of virgin and fallow lands in the mid-1950s. The analysis of documents shows that the situation with infectious and pulmonary diseases among children was complex and characterized by a significant prevalence especially in the first year of life. Authors concluded that extensive sanitary and anti-epidemic measures at the national level, child care institutions supervision and the method of the Pirquet tuberculosis reaction had led to drop in childhood morbidity and mortality in some areas of the region. At the same time the analysis showed that the mortality rate among children in the first year of life in the region was higher than in the country as a whole. These data required further scientific and practical research by health authorities in terms of the study and practical application of medical-organizational mechanisms and measures.
Development of the “black list” of the flora for the Chelyabinsk region of Russia
Authors: Merker Vera , Abramova Larisa , Golovanov Yaroslav
Published: May 2023

The results of the study of alien species of the Chelyabinsk region, which form invasions in different ecological and geographical conditions of the region, are presented. A preliminary “black list” of the flora of the region has been compiled, including 64 species of invasive alien plants. Using the recommendations for compiling regional “Black Books” or “Black List”, the species included in the specified list are ranked by us into four categories according to their invasive status. Information is based on indications of reliably known places of introduction and growth of alien species, sources and time of introduction, degree of naturalization and communities with their participation. The presented materials reflect the state of invasive processes in the region and can be used to prepare the “Black Book of the Southern Urals”.
Industrial ecosystem entities business success
Authors: Pletnev Dmitri , Babkin Alexandr , Levikova Tatyana , Popova Alyona , Tashenova Larissa
Published: May 2023

The sustainable development and success of industrial regions is largely determined by the efficiency of enterprises in the territory, united in ecosystems, often around the city-forming enterprise. The study of industrial ecosystems, their evolution and the interrelations of participants will make it possible to more effectively implement the goals of sustainable development in the territory, ensure a fair distribution of income, well-being and rational environmental management. The purpose of the article is to assess the relation between the development of entities of the industrial ecosystem on the example of the industrial ecosystem of the Magnitogorsk urban district in Russia. The study used data from Rosstat and the Federal Tax Service for 2007-21. The main results of the study are as follows: five groups were identified in the industrial ecosystem (the core of the ecosystem, companies affiliated with the core, customers of the core, suppliers of the core and other beneficiaries from the work of the core and the ecosystem as a whole, “fellow travellers”). The connection between the performance of the ecosystem core and other companies turned out to be statistically significant, especially strong for revenue growth rates. Among individual ecosystem groups, affiliates and core clients experienced the greatest influence of the core, while the connection of the results of the core with suppliers and fellow travellers was weaker. The connection, taking into account the time lag of one year, turned out to be weaker than the year-to-year connection. In general, the results confirm the hypothesis of a strong connection between the stability of the core and other participants in the industrial ecosystem.
Hydrophilic fillers for anione exchange membranes of alkaline water electrolyzers
Authors: Kuleshov V.N. , Kurochkin S.V. , Kuleshov N.V. , Gavriluk A.A. , Klimova M.A. , Smirnov S.E.
Published: May 2023

Alkaline water electrolysers are widespread in many industries, including systems with hydrogen cycle of energy storage. One of the problems of modern alkaline water electrolysers is insufficient purity of generated electrolysis gases relative to electrolysis systems with solid-polymer electrolyte. In this regard, work on modification of existing porous diaphragms is actively carried out. One new area of research is the impregnation of new hydrophilic fillers into the composition of existing diaphragms and the transition to ion-solvate membranes. In this work the synthesis of zirconium hydroxide hydrogel inside a porous diaphragm with the hydrophilic filler TiO2 was carried out. This synthesis makes it possible to obtain a membrane with anion-exchange properties. A possible mechanism of OH- hydroxyl ion transfer by immobilized K+ ion was also proposed. The obtained results demonstrated the resistance of the membrane to concentrated alkaline solutions.
Distribution dynamics of Rodlet cells in the gills under pathological alterations
Authors: Mautalieva Anel , Zharkova Irina , Gusseinova Jamilya , Kobegenova Saidina , Suvorova Maria , Bakieva Adel , Abdullayeva Bagila
Published: May 2023

The article describes the study of Rodlet cells in gills of 15 fish species of the Cyprinidae family, 1 fish species from the Siluridae family, 2 fish species from the Percidae family, and 1 fish species from the Esocidae family, all caught in Zhaiyk River, Republik of Kazakhstan. Rodlet cells at the present stage of researche are classified as the cells of nonspecific immune response in fish. Besides, they can be used as biomarkers to monitor the state of water reservoirs. Serious pathological changes in gills of the surveyed fish were revealed by histomorphological technique, indicating the pollution of water environment. An increased number of Rodlet cells was associated with morphological aterations in the gills. It was also noted that in the gills of all species Rodlet cells are at the different stages of differentiation. Data obtained support the issue of protective and adaptive functions of Rodlet cells under adverse environmental conditions.
Environmental management system as a factor of agriculture enterprises productivity
Authors: Ushakov Denis , Shatila Khodor
Published: May 2023

The environmental aspect is now a significant element in polluting companies' management choices. The laws defined by the establishment of standards and requirements to guarantee minimally contaminated environment are applicable to these companies. These standards have encouraged companies to implement environmental management systems. According to these concepts, our research aimed at assessing the improvement in productivity of companies working in the agrarian sector by adopting an environment management system. We evaluated productivity by defining and estimating the manufacturing function using a sample consisting of Thailand businesses, and then utilized the panel data to test its effect upon manufacturing companies' productivity by adopting the environmental management system. The installation of an EMS and productivity have been favorable and significantly correlated.
Additive “PREVAX” application for mastitis prevention and complex treatment in high-producing cows
Authors: Kruglova Yulia , Rogov Roman , Khmelenko Rudolf , Muradyan Zhora
Published: May 2023

This article presents the results of clinical trials of the supplement “PREVAX”. The results of the additive tolerability study «PREVAX» are presented in high-producing cows, the results of preventive and therapeutic use of the supplement “PREVAX” in high-producing cows with subclinical and clinical mastitis, and the effect of the supplement on milk parameters and milk production. The application of the additive “PREVAX” for the prevention of mastitis has a positive effect. The administration of the supplement orally through the watering system at a dose of 1 ml per 100 litres of water for 60 days was found to reduce the incidence of mastitis in cows by 70%. Administration of the additive “PREVAX” to cows with the clinical form of mastitis at a dose of 4 ml per 100 litres of water in the background of classical therapy with Mamikur at a dose of 10 ml intra-cisternally is well tolerated by the animals, gives a pronounced positive clinical effect and leads to normalisation of somatic cell count in milk on the sixth day of treatment. At the same time, treatment without the supplement “PREVAX” only led to a similar result after 12 days of treatment.
Determination of the quality of composite flour mixtures
Authors: Khamidova Feruza , Kholmirzaev Ilkhomjon
Published: May 2023

This article presents the results of the analysis of wheat and lentil grains grown in the conditions of Uzbekistan. The chemical composition, protein content and amino acid content of lentils were determined. It is clearly stated how the analysis is carried out, what methods and formulas are used. In this regard, the study of the physicochemical characteristics of local varieties of lentil grain seems to be relevant. In recent years, much attention has been paid in the republic to the expansion of wheat and lentil grain sown areas. Such types of leguminous crops are the main sources of obtaining flour. The composition of fodder meal prepared using local lentil grains was analyzed. At the same time, the influence of the technology for obtaining composite mixtures from wheat and lentil flour on the composition of the product was studied. The quality indicators and physico-chemical characteristics of the composite mixture were established when the output amount of composite flour was introduced and simultaneously with the introduction of new technology. Classification of compound flour prepared on the basis of local varieties of lentils. The chemical composition was studied separately for each variety and the effect of composite flour on quality indicators was analyzed.
Integration issues of human-being and environment
Authors: Aminov Khamza
Published: May 2023

Objectively speaking, people are a part of nature, and nature contributes to human economies via the use of natural resources. Mineral resources are being used inefficiently and may soon be in limited supply. The burden on the natural environment rises in tandem with the increase in global population. Moreover, the sorts of contaminants are diversifying. After all, humankind is developing. More and more novel compounds that are not the greatest for the biosphere are being developed. The food, petrochemical, and woodworking sectors significantly harm water resources. Environmental contamination is a century-old issue on a worldwide scale. In actuality, there aren't many fundamental causes for the environment's unviability. It has long been evident that people believe they have a right to address global issues while attempting to preserve nature, but this is not always the case. Such a solution to the existing worldwide issue would result in the extinction of all life. Because it thinks it is in control of the situation, humanity appears to ignore the “Hints” of nature. In the meantime, environmental equilibrium is becoming more and more disturbed by human technology.
Growth phases of autumn rapeseed effect of seedling thickness
Authors: Yuldasheva Zulfiya
Published: May 2023

Rapeseed is a highly valuable livestock feed as its seeds contain a higher percentage of oil and protein compared to other agricultural crops such as pea, wheat, and barley flour. Rapeseed seeds are rich in protein and oil, with percentages ranging from 21% to 33% and 42% to 48%, respectively. Rapeseed flour now has a protein content that is 1.9 to 4.0 times higher than that of wheat, barley, and pea flour. Rapeseed also produces 1 ton of seeds per hectare along with 0.41 to 0.44 tons of oil and roughly 0.2 tons of protein. With the introduction of contemporary cultivars that contain low amounts of erucic acid and glucosinolates in both the oil and seed tissues, the importance of rapeseed as a livestock feed has been further increased. Its seed yield is also high, with one hectare producing one ton of seeds, 0.41-0.44 tons of oil, and 0.2 tons of protein. In this research, scientific research experiments were carried out in the fields of experimental scientific research and educational experimental farm of Tashkent State Agrarian University during 2020-2021. The results showed that during the flowering phase, the development of the Yasna control variety slowed down and was delayed by 1-3 days compared to the Sarmat and Loris varieties. In the flowering phase, differences in varieties of rape began to be noticed.
Productivity of hybrid mulberry on salted soils
Authors: Daniyarov Umirzak , Rakhmonberdiev Vakhobjon
Published: May 2023

The demand for natural fibers such as silk, wool, and cotton is growing globally, especially for silk fabrics and raw materials from cocoons. In nations with well-established sericulture, efforts are concentrated on enhancing the quantity and quality of cocoon production by growing high-nutrition-value mulberry varieties through asexual reproduction. The study aimed to determine the productivity of the mulberry hybrids during double operation, which required two years of rearing. The silkworm hybrid Ipakchi 1 x Ipakchi 2 was used for the study, and the hygrothermal regime was observed during rearing. the viability of caterpillars varied between 84.8% to 94.43% depending on the feeding option. The use of Karshi-1 x Pionersky hybrid leaves for feeding resulted in the highest viability of 94.43%, compared to 91.08% in the control. However, the lowest viability of 84.8% was observed in the Katlam x Pionersky hybrid. The mass of live cocoons of all tested hybrids was similar, ranging from 2.04-2.21 g.
Viability and efficiency of Pantoea brenneri strains as phosphate solubilizing bacteria
Authors: Bulmakova Daria , Suleimanova Aliya
Published: May 2023

Phytate-degrading microorganisms with the ability to solubilize inorganic soil phosphates can serve as the basis of bio-fertilizer. Four lowcost liquid compositions were examined for viability of Pantoea brenneri strains 3.2 and 3.5.2 stored at room temperature and at 4°C for six months. By the end of the experiment, the highest cell survival rate for both P. brenneri strains 3.2 and 3.5.2 at 4°С and at 25°С was ensured by a LB broth supplemented with glycerol. Moreover, strains maintained the highest phosphate solubilizing index in this composition as well.
Border and internal regions: a comparative study of resilience in the crisis
Authors: Khmeleva Galina , Kostromin Klim , Kolmykova Tatiana , Bolgova Elena
Published: May 2023

Existing gaps in research, highlighting the varying resilience of economies to crises and shocks, limit the scope for designing policies for long- and short-term growth. There is a need for new researches in the context of a large-scale Russian-Ukrainian crisis. This article studies the reactions of the border and internal Russian regions to the largest shock in recent years, associated with a special military operation and large-scale sanctions. Representative publications declared that the Russian economy is resilient to sanctions. Our research reveals regional aspects of the short-term response of the Russian economy. Systematization of the main indicators of employment, standard of living, economy allowed to cover the main characteristics of socio-economic development of the region. Scientific novelty is achieved by new data on inter-group and intra-group differences of border and internal Russian regions. The practical significance of the study lies in the possibilities of applying the obtained results to work out policies that take into account the differences between border and internal regions.
Factors of soil formation and their evolution in the south of the Zerafshan valley
Authors: Nazarova S.M.
Published: May 2023

In article is stated main groundforming (the geomorphological-hydra geological land reclamation, climatic and anthropogen) factors, describes the evolution of soils in the lower part. In Zerafshan valley are chosen 3 geomorphological regions. Differ the raised contents a magnesium, high water table on irrigated territory in roast time and heavy expences them on evaporation. Economic activity of the person is reflected and on climate, and on hydralogical condition to surfaces of the land. As a result of reclamation measures, takyr-meadow, old-fallow meadow with bog-meadow and salt marshes, gray-brown soils were transformed into old-irrigated meadow alluvial soils. The increase in irrigated land was due to the development of new, previously unrevealed territories.
Emergence factors and characteristics of landscape science
Authors: Ergasheva Mavjuda , Toshov Khudoynazar
Published: May 2023

Followingarticle deals with the landscape science and its formation, stages of development, the role of landscape science as a fundamental science in the system of geographic sciences, as well as some of the problems that have arisen in connection with the branching of the science. For this purpose, researches conducted by leading scientists were analyzed and relevant conclusions were drawn.
Customer responses to advertising social media choices when choosing an airline: a case study of low-cost airlines in Thailand
Authors: Nisara Paethrangsi , Ploywarin Sangsomboon , Wanlapa Jandaboue
Published: May 2023

This study examines customer responses to advertising media choices when choosing an airline. The authors employed quantitative research that obtained the basic information about passengers' choices of airlines via an online Google form and in-person questionnaire distribution at the airports. As a result, this study's number of valid responses was 209, with a 50.20% age range between 18-30 years old. The results found that passengers tend to watch social media, use the web rather than offline media, and consume online application platforms on mobile applications, e.g., Facebook, YouTube Channel, Line application, and Instagram. Online advertising and social media are closely associated with consumer lifestyles. The most important social media that customers respond to when choosing an airline ticket is Facebook, followed by Instagram and Line application because it connects customers to the airline website conveniently and creates better interaction with customers. At the same time, Offline media is considered a minor virtual channel that affects customer response.
Strategic human resource management in aviation industry a new normal perspective after the COVID-19 crisis: a case study of Bangkok Airways
Authors: Charernnit Kanittha , Treruttanaset Pongsapak
Published: May 2023

This is quantitative research that study the strategic human resource management of the aviation industry in Thailand in the new normal culture era with objective to study the level of strategic human resource management factors of the Thai aviation industry in the new normal culture era.This is a quantitative research study. The data were collected by using a number of sample questionnaires, which is a ground staff employee of Bangkok Airways.The sample group of employeeswere assigned into 2 groups in order to assess the level of human resource management and the level of competitive advantage of Bangkok Airways. The first group is a group of 310 employees, and the second group is a supervisor and manager, totaling 275 people, a total of 585 people.The data analysis in this research were, Frequency, Percentage, Mean, Standard Deviation and T-test. 2 groups Pearson's Product-moment Correlation Coefficient Analysis and Multiple Regression Analysis.The results of this research shown that Bangkok Airways focusing on the importance of Human Resource Information System (HRIS) at the very most order,From the research result, the researcher recommend that the airline should adopt strategic human resource managementto create a competitive advantage in the aviation industry in Thailand in the new normal culture era in orderto develop the organization's competency in airline business accordingly.
Information technology strategy responses to Covid-19 pandemic: case study e-service in air transport
Authors: Waramontri Rojanard
Published: May 2023

The COVID-19 pandemic has affected the Airline Industry in many aspects. This has brought changes in many aspects of the lives both as service providers and service receivers in the air transport. Social distancing and other restrictions have significantly impacted the stakeholders in the airlines industry. In addition, several airlines faced more challenges after the reopening of the services and operations since adaptation of the new standards and procedures have set the limitations. Therefore, organizational planning and managing crisis are relevant. This research aimed to discuss relevant information in relations to e-service which could support the management levels to contribute to the crisis management strategic planning. The author adopted qualitative analysis by applying the in-depth interview. This research investigated how two airlines in Thailand had managed the disruptions and other disturbance caused by the COVID-19 pandemic. The respondents in the study were 8 managers working in two different airlines in Suvarnabhumi airport. This was conducted in April- May 2022 to study the relevant information in relations to the effectiveness of the strategy. The management in the Airline industry will benefit from this set of information and be able to help organizations in air transport to respond to current situations.
Closed biotechnological cycles for transport life support systems in deep space exploration
Authors: Kabashkin Igor , Glukhikh Sergey
Published: May 2023

The integration of closed biotechnological cycles in life support systems (LSS) of autonomous transport systems (ATS) is a critical solution for deep space and planetary exploration. Prolonged autonomous existence of integral ecosystems depends on the degree of cyclic use of substances and the coefficient of closure of the ecosystem's mass-exchange processes. In missions lasting over two years, it becomes more beneficial to reproduce necessary substances inside the system instead of relying on external supplies. This research aims to explore the integration of closed biotechnological cycles, with a focus on the biotechnological cycles of methane and carbon dioxide, in the LSS ATS to achieve a high coefficient of closed circulation of substances and nature-like features. Two methods of ATS crew waste processing are described, and the potential of using methane for additional oxygen generation and food protein biosynthesis in the closed-loop cycle of substances transformation is investigated. Additionally, the possibility of applying methane biooxidation technology to existing biotechnological processes of feed and food protein production using methanotrophic bacteria in terrestrial conditions is discussed as a potential method for producing food animal protein in LSS ATS.
Main aspects of advanced standardization for innovative transport equipment of the processing industry
Authors: Sokolov Sergey , Yashonkov Aleksander
Published: May 2023

The ISO 9001 standard contains requirements, the fulfillment of which can be objectively verified or evaluated. The article deals with the examples of the dominant parameter choice which determines the performance index used in the construction of innovative transport equipment for the processing industry. It is proposed to accept as the basic parameter the parameter that determines the quality indicator of the equipment as an object of standardization and does not depend on equipment technical perfection and manufacturing technology. As a result of the studies carried out by means of parametric modeling method according to the formalized conditions of the study, it was proved that, taking into account the specifics of the processing industry transport equipment, it is advisable to take power as the dominant parameter for the standard-size parameterization of processing industry innovative transport equipment.