bluuebunny/crossref_metadata_2025 huggingface dataset:
HIV-Tocky system to visualize proviral expression dynamics
Authors: Reda Omnia , Monde Kazuaki , Sugata Kenji , Rahman Akhinur , Sakhor Wajihah , Rajib Samiul Alam , Sithi Sharmin Nahar , Tan Benjy Jek Yang , Niimura Koki , Motozono Chihiro , Maeda Kenji , Ono Masahiro , Takeuchi Hiroaki , Satou Yorifumi
Published: March 2024

Determinants of HIV-1 latency establishment are yet to be elucidated. HIV reservoir comprises a rare fraction of infected cells that can survive host and virus-mediated killing. In vitro reporter models so far offered a feasible means to inspect this population, but with limited capabilities to dissect provirus silencing dynamics. Here, we describe a new HIV reporter model, HIV-Timer of cell kinetics and activity (HIV-Tocky) with dual fluorescence spontaneous shifting to reveal provirus silencing and reactivation dynamics. This unique feature allows, for the first time, identifying two latent populations: a directly latent, and a recently silenced subset, with the latter having integration features suggestive of stable latency. Our proposed model can help address the heterogeneous nature of HIV reservoirs and offers new possibilities for evaluating eradication strategies.
Recent developments in wearable breath sensors for healthcare monitoring
Authors: Kim Dohyung , Lee Jinwoo , Park Moo Kyun , Ko Seung Hwan
Published: March 2024

Within the breath lie numerous health indicators, encompassing respiratory patterns and biomarkers extending beyond respiratory conditions to cardiovascular health. Recently, the emergence of the SARS-CoV-2 pandemic has not only underscored the necessity of on-the-spot breath analysis but has also normalized the use of masks in everyday life. Simultaneously, the rapid evolution of wearable technology has given rise to innovative healthcare monitoring tools, with a specific emphasis on wearable breath sensors. This review explores current research trends in utilizing wearable breathing sensors to detect diverse respiratory biomarkers and monitor respiratory parameters, including airflow, temperature, and humidity. Additionally, it explores diverse applications, ranging from recognizing breathing patterns to swiftly detecting diseases. Integrating the Internet of Things and machine learning technologies into these applications highlights their potential to offer a personalized, accurate, and efficient healthcare solution.
Multiple length-scale control of Boc-protected diphenylalanine aggregates through solvent composition
Authors: Catalini Sara , Bagni Francesco , Cicchi Stefano , Di Donato Mariangela , Iagatti Alessandro , Lapini Andrea , Foggi Paolo , Petrillo Caterina , Di Michele Alessandro , Paolantoni Marco , Schirò Giorgio , Comez Lucia , Paciaroni Alessandro
Published: March 2024

Self-aggregation of Boc-protected diphenylalanine towards the formation of architectures with morphology and structure highly dependent on the acetonitrile-water percentage.
Visible light photocatalytic NOx removal with suppressed poisonous NO2 byproduct generation over simply synthesized triangular silver nanoparticles coupled with tin dioxide
Authors: Pham Viet Van , Nguyen Thang Quoc , Le Hai Viet , Cao Thi Minh
Published: March 2024

We used triangle-shaped Ag nanoparticles coupled with SnO2 for efficient photocatalytic NO removal. The modification with Ag TNPs significantly boosted the removal performance up to 3.4 times higher than pristine SnO2.
Oxygen-rich hierarchical porous carbon nanosheets derived from the KOH/KNO3 co-activation treatment of soybean straw for high-performance supercapacitors
Authors: Li Yunxuan , Kong Chuixiong , Du Zurong , Zhang Ju , Qin Xuan , Zhang Jiwei , Li Chulin , Jin Yang , Wang Shenggao
Published: March 2024

A novel KOH/KNO3 co-activation method was reported to simply prepare high-performance porous carbon electrodes for the fabrication of supercapacitors.
The role of lipids in genome integrity and pluripotency
Authors: Tian Qiyu , Chung Hoyoung , Wen Duancheng
Published: March 2024

Pluripotent stem cells (PSCs), comprising embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs), offer immense potential for regenerative medicine due to their ability to differentiate into all cell types of the adult body. A critical aspect of harnessing this potential is understanding their metabolic requirements during derivation, maintenance, and differentiation in vitro. Traditional culture methods using fetal bovine serum often lead to issues such as heterogeneous cell populations and diminished pluripotency. Although the chemically-defined 2i/LIF medium has provided solutions to some of these challenges, prolonged culturing of these cells, especially female ESCs, raises concerns related to genome integrity. This review discusses the pivotal role of lipids in genome stability and pluripotency of stem cells. Notably, the introduction of lipid-rich albumin, AlbuMAX, into the 2i/LIF culture medium offers a promising avenue for enhancing the genomic stability and pluripotency of cultured ESCs. We further explore the unique characteristics of lipid-induced pluripotent stem cells (LIP-ESCs), emphasizing their potential in regenerative medicine and pluripotency research.
Thermodynamic substantiation of ecological-physiological modeling
Authors: Lisitsyn V. , Kamalova N. , Evsikova N. , Matveev N.
Published: March 2024

The forest ecosystem is a classical example of an open system. Its behavior can only be described within the framework of nonequilibrium thermodynamics. The fundamental concept of thermodynamics is the entropy of a system. According to the second law of thermodynamics, the entropy of closed systems takes on the maximum possible value when it reaches an equilibrium state. But in open systems, one can speak of a change in entropy. In ecosystems, the entropies change is represented as the sum of two terms. One term expresses the change in entropy within the system, and the other one is responsible for the connection with the environment. In the work, based on the definition of entropy through the thermodynamic probability of the system (the static weight of the system), a relation was obtained to determine the statistical weight of the forest ecosystem. The statistical weight has determined through the maximum value of biomass achieved during the growth of the stand. As a result, a differential equation has obtained for finding the stand biomass. The analytical solution of the equation is the basis for constructing a basic model of the growth dynamics of a single-species stand. The model was verified for a complete (normal) pine stand of the first five quality classes (1b, 1a, 1, 2, 3). The evaluation of the modeling quality was carried out using the dimensionless Nash-Sutcliffe criterion and showed a very good description of forestry data by the proposed model.
Pine needles and soil as bioindicators of forest ecosystems in the anthropogenically disturbed areas of the Baikal region
Authors: Mikhailova T.A. , Shergina O.V. , Kalugina O.V. , Dmitrieva A.A.
Published: March 2024

Forest ecosystems of Baikal region were chosen a subject of comprehensive research conducted on the basis of the monitoring network created. Recommendations of the international manual ICP Forests, as well as the authors’ developments were used for the research. The study was focused on toxicological, physiological-biochemical, and biogeochemical indicators that adequately reflect the state and manifestation of the protective properties of the forest ecosystem main components (tree-stand and soil) under the influence of anthropogenic factors – air pollution, urbanization, and irrational forest management. The assessment of the vital state of tree-stands of Scots pine (indicator species) was carried out on the basis of representative indicators: pigments, the level of enzymatic and non-enzymatic components of antioxidant protection, the content and ratio of biogenic elements, changes in morphometric parameters. When studying soil in anthropogenically disturbed territories, an increase in soil density, a decrease in natural moisture, aeration, and humus content were found, alkalization of the upper horizons and accumulation of pollutants with a low migration rate in the upper horizons of the soil profile. Air pollution and high recreational load were shown to produce the greatest stressful impact on the forest ecosystems.
Trends in radial growth of Scott pine trees in geographical crops
Authors: Chernyshov M.P. , Mikhailova M.I.
Published: March 2024

The purpose of the research is to identify trends in the change in radial growth, the width and structure of annual rings in forest-steppe and steppe pine ecotypes in 59-61-year-old geographical cultures. To achieve the intended goal, according to the methodology adopted in forest inventory, 32 trial plots were laid, on which the diameter of trees at a height of 1.3 m with an accuracy of 0.1 cm and the height with a Blume-Leiss altimeter with an accuracy of 0.1 m were measured with a measuring fork. area (PP) from 3 trees of average diameter and height, radial wood cores were taken with a Haglof-60 age borer at a height of 1.3 m. After dating the growth rings of wood, their width was measured at the Lintab-6 complex, divided into early and late. The obtained data were statistically processed using the programs Statistica 8.2 and Excel-10. In the forest-steppe and steppe ecotypes, the trends of radial growth were determined and their features with age were revealed. So, up to 10 years it increases, then sharply decreases and after 20 years it stabilizes.
Prospects for use of the predatory mite Transeius herbarius 1960) (Mesostigmata: sam. Phytoseiidae, subfamily. Amblyseiinae)
Authors: Meshkov Yury I. , Glinushkin Alexey P. , Stepanova Eugenia V.
Published: March 2024

The predatory mite Transeius herbarius (Wainstein, 1960) isused as a specialized acariphage mainly on berry crops. In the openground, T. herbarius is one of the effective predators of strawberry(Tarsonemidae) and spider mites (Tetranychidae). The predator canpenetrate into the primordial, reproduces better in humid places, migrating2–3 meters per season. On strawberries effectively regulates the strawberrymites population and even uses proportionate female spider mites in thefood chain. The predator is amenable to breeding on loose substrate usingbarn mites of various species. High survival rate is found on industrialuterine plantings of garden strawberries in the open ground, with use ofcomplex of protective measures including insecticides. Due to the naturalsmall population of this predator in the fields, research and saturatingreleases in a normalized amount are required for optimal protection frompests.
Simulation modeling of forest plantation condition
Authors: Logachev Maxim , Beresneva Yana
Published: March 2024

The article substantiates the necessity of creating a simulation model of changes in the states of forest plantations. Such a model makes it possible to repeatedly conduct experiments on the object of study on changes in different parameters in order to predict the consequences and develop operational management scenarios to reduce the negative impact on its processes and objects. The use of structural analysis, synthesis and classification methods allowed us to identify the key objects of such an ecosystem and the processes that influence their germination, growth and death. The results obtained became the basis for the creation of a system dynamics model reflecting the nature of the behavior of the objects and processes under study. With the help of simulation modeling methods, a system of differential equations was created, which takes into account the quantitative instances of objects and the rate of their changes depending on external parameters. Based on this, a graphical model reflecting all aspects of the realization of such processes has been created.
Peculiarities forest industry enterprises operation according to the principles of sustainable development
Authors: Medvedev Sergey , Zyryanov Mikhail , Ivantsova Ekaterina
Published: March 2024

The article contains the results of scientific research of the peculiarities of the forest industry enterprises' work taking into account the transition to the principles of sustainable development. In the modern world, increased attention to sustainable development is one of the global trends. The purpose of the work was to develop the basic principles that should guide forest industry enterprises in their activities in the current situation and in the long term. The main methods of work are analysis, synthesis, modeling. As a result, the advantages of individual stakeholders in the transition of enterprises to sustainable development are summarized. The substantiation of certain features of forestry enterprises' work is given, taking into account the need to transition to the principles of sustainable development. The key problems that stand in the way of the active implementation of the concept of sustainable development are highlighted. Several key principles are proposed that should guide forest industry companies in planning their activities. The most important of them is the thesis of the necessity to develop a long-term development strategy, in accordance with which current activities and operational planning should be carried out. It is concluded that sustainable development will become more and more important for society, government and business; the transformation of the forest industry in this direction is inevitable, although the achievement of qualitative changes will take a long period of time.
Development of an effective technology for producing composite wood-plastic board materials for construction and furniture purposes
Authors: Kholmurodova Dilafruz , Pardaeva Sohiba , Kardzhavov Abdikhakim
Published: March 2024

This article presents the results of research in the development of an effective technology for obtaining composite wood-plastic board materials for construction and furniture purposes based on fillers from cotton stalks, which are agricultural waste, and polymer binders based on modified urea-formaldehyde and gossypol resins, epichlorohydrin, benzyl chloride, and polyvinyl chloride. The study revealed a correlation between the ultimate bending strength, tensile strength and water absorption with the parameters of pressing polymer-fillers of the mass. At the same time, to obtain composite wood-plastic board materials, it is recommended to use a urea-formaldehyde resin modified with reactive structuring additives as a binder. It has been established that the optimal technological mode for pressing the mass of polymer fillers and cotton stalks is: specific pressure 35 kg/m², pressing temperature 168-170°C, heating duration 7-10 minutes. Key words: technology, composition, modified urea-formaldehyde resin, cotton stem filler, wood-plastic board, specific pressure, pressing temperature, heating duration, water absorption, tensile strength.
A bibliometric review of vegetable oils and modified fats studied in scientific bases around the world
Authors: Rakhimov Dilshod , Fayzullayeva Nodira , Shomaksudova Kamola , Kenjayev Nuriddin , Hakimova Zulfiya , Rakhmanov Sherzod , Abduraximov Ahror
Published: March 2024

Vegetable oil and modified oils are one of the main products involved in the preparation of food products necessary for human existence. These products mainly use chocolate oil, animal fats, solid hydrogenated hard oil, normalized trans isomers of trans isomers, milk fat substitutes, margarines within the requirements for hardness, and modified oils. Modification oils have been studied in various articles by world of countries scientists in the period from 2013 to 2022. Sources for this article are from Scopus. Below, the effectiveness of this modification and vegetable oils and the number of pages in the articles affilished from 2013 to 2020, belonging to the universities of the world countries. Among the authors, mainly Franco, J.M., Negm, N.A., in terms of the number of citations and covered articles, ranked after Prociak, A. with 7 citations, they had 5 citations. We know that before the development of vegetable oils, it is necessary to grow some kind of oilseed, which is related to the earth and the sciences of Agricultural and Biological Sciences. Between 2013 and 2023, a total of 379 pages of information on vegetable oils and modified oils were created and studied in scientific literature and Internet resources. We can see that the word plant oil occurs 505 times in 70 places and the word chemistry occurs 478 times in 67 places. The researched pages of the article, Books and other documents and related information are not only based on the resource base, but regardless of where it is located, we can read that the quality of the resource, the relevant keywords in the in-depth article, the quality of the collections is not compromised. The number of published articles on vegetable oil and modified oils showed the importance of developing this industry for the agriculture of the world countries.
Varieties and hybrids of leek (Allium porrum) in the conditions of Uzbekistan
Authors: Sullieva Suluv , Zokirov Kurbonalijon , Khalikov Bakhodir , Nishonova Asal , Negmatova Surayyo
Published: March 2024

In the article, the results of the research carried out in theconditions of Uzbekistan for the purpose of comparing the varieties of leek"Elephant", "Bandit" and hybrids "Lincoln F1", "Chinuk F1" in terms ofvaluable economic characteristics are presented with a deep scientificanalysis. Planting was carried out by hand in 4x1 cm rows in 7x40x60 cmboxes in a greenhouse on March 15. Seedlings appeared after 10-12 days,on May 10 they were transplanted to open field. Planting in open field wascarried out in a scheme of 50x10 cm. Morpho-biometric indicators includedetermining the main quality indicators of seedlings before planting inopen field: plant weight, false stem diameter, plant height and number ofleaves. Plant height was measured from the bottom of the leaves to the tip.At the end of the research, the data analysis shows that among the studiedleek varieties and hybrids, the hybrid "Lincoln F1" was superior to othervarieties and hybrids in terms of all valuable economic characteristics, andwe will further research this hybrid. we separated for In the conditions ofUzbekistan, this hybrid recorded high indicators in terms of plant weight,false stem diameter, plant height, number of leaves.
The influence of spatial heterogeneity of the properties of agricultural fields on productivity
Authors: Zhuravleva Larisa
Published: March 2024

The use of differentiated technologies in crop production ensures high yields while minimizing environmental impacts and significant resource savings. To optimize technological impacts, it is necessary to know the distribution of soil properties and their changes in space and time. The purpose of the work is to assess the variability of soil characteristics and the impact on crop yields. The article presents studies of the variability of soil properties, the unevenness of soil moisture during the operation of wide-range sprinkler equipment and the influence of spatial heterogeneity of properties and the use of differentiated technologies on crop yields.
Spherical storage facilities as an energy-saving innovation in small business forms
Authors: Ivanov Pavel , Asmankin Evgeny , Ushakov Yuriy , Shakhov Vladimir , Neifeld Elena , Rotova Victoria
Published: March 2024

Ensuring food security is a priority for the development of Russian agriculture. In this regard, the increase in the number of refrigeration plants for storing agricultural and other products, which require a significant amount of electric energy to generate cold, necessitates the search and development of new energy-efficient sources of cold supply. The solution to this problem is possible due to the commissioning of fruit and vegetable storages of a buried type of spherical shape. The calculation of heat losses indicates a significant superiority of such fruit and vegetable storages over standard ones - with flat enclosing surfaces, and the use of cold charging of the carrier soil mass contributes to the regulation of the storage mode of products in the optimal range of temperature values, which ensures a long period of quality assurance.
Training complex for developing and evaluating skills for solving optimization and control problems in food production facilities
Authors: Polevshchikov Ivan , Kargin Vitaly , Mokrushin Sergey , Nazoykin Evgeny , Ukolov Maxim
Published: March 2024

The paper is devoted to the development of theory and practice of creating computer simulators for professional training of personnel in the food industry. The prototype of the Intellectual Training Complex (ITC) is developed for training engineering specialists in knowledge and skills in solving problems of optimization and control of production processes. The functioning of the ITC software is based on algorithms that allow modeling typical optimization and control problems in exercises, in particular, the processes of formation and evaluation of individual exercise variants are determined by the properties and structure of this type of problems. Implementation of the ITC prototype in the educational process of technological universities to train engineering specialists in the skills of solving optimization and control problems in the practical aspect allows simplifying the creation and evaluation of exercise courses, contributes to better formation of knowledge and skills of a specialist taking into account the specifics of the chosen training direction (in particular, as applied to the professional training of food production technologists, specialists in the automation of technological processes at food enterprises).
Theoretical analysis of research conducted on the assessment of short-time and long-lasting deformation of textile yarns
Authors: Bobojanov Husanhon , Abdulazizov Shokirjon , Ibragimov Axadjon , Sultonov Saminjon
Published: March 2024

This article presents an analysis of the studies on short-time and long-lasting deformation of textile yarns. The strength and deformation characteristics of the yarns are inextricably linked. In the textile industry, a lot of experiments have been conducted to study the properties of yarn strength. However, this article mainly contains information such as short-time and long-lasting deformation properties of yarns, deformation detection equipment, and their working principle, deformation properties of mixed fiber yarns, analysis of deformation properties of viscose and polyester fibers under the same load, deformation properties of polyester-wool-spandex blend yarns, regression modeling of deformation properties of yarns obtained from polyester-viscose-regenerated bamboo-cotton fiber blends, textile products studies and comments on recommending yarns with good deformation properties can be found.
Features of modeling in agricultural production with risks
Authors: Kuzubov Alexey , Maksimenko Aleksandr , Sapozhnikova Ekaterina , Malinina Olga
Published: March 2024

For the modern economy, the agricultural sector is an important link. In a market economy, agricultural management processes have become significantly more complex, as they develop under conditions of uncertainty. This leads to the need to take into account not only traditional factors of economic activity, but also supply and demand for agricultural products, weather conditions, which largely determine the economic efficiency of the agricultural sector. The uncertainty inherent in the agro-industrial complex is the main difficulty in scientific research into the structural and functional organization of this complex. Uncertainty is generated by many factors, the most important for agricultural production are weather and market conditions, scientific and technological progress. The need to take into account and manage weather risk arises from the objective requirements of a market economy, which requires enterprises to find ways to better adapt to external and internal conditions of operation and development of production. Agricultural production is constantly being reformed in market conditions. In this regard, there is a need to develop new methodological approaches to planning the safety and development of agricultural enterprises, associations and the agro-industrial complex as a whole. The study of these issues is possible through the use of economic-mathematical modeling and computers. The article discusses the concept of planning the use and development of agricultural enterprises under conditions of uncertainty. The concept is based on the development of organizational, economic and methodological approaches to the formation of the planning process, which provides agricultural enterprises with the prerequisites for better adaptation of production in conditions of weather risk, increasing the competitive level of enterprise sustainability.
Digital infrastructure for sustainable development of Russian agriculture
Authors: Korobeynikova Olga , Korobeynikov Dmitry , Dugina Tatiana , Shaldokhina Svetlana , Chekrygina Tatiana
Published: March 2024

The purpose of the article is to assess the implementation of sustainable development goals and consider the current state of the digital infrastructure for the sustainable development of Russian agriculture. The main directions of sustainable development in Russia include the development of agriculture and sustainable infrastructure. The dynamics of achieving 17 sustainable development goals established by the Russian Government are considered. A conclusion is made about the positive dynamics of achieving goals and the factors that influenced this dynamics are identified. The digital infrastructure for the sustainable development of Russian agriculture in the modern economy is discussed in the article through the use of digital technologies, as well as their accessibility to agricultural organizations. The insufficient provision of Russian agriculture with sustainable development infrastructure and insufficient use of digital technologies were noted. The low availability of high-speed Internet networks in rural areas is a significant limiting factor for the sustainable development of organizations in agriculture. The financial infrastructure for sustainable development is represented by commercial banks and non-bank credit organizations. Russian agriculture is primarily served by two largest banks: Russian Agricultural Bank and SberBank. They implement sustainable development programs; SberBank is a leader in promoting sustainable development and ESG programs.
The effect of senage as a low-concentrate type feeding racion in feeding cows and their productivity and fertility when using silage feeds
Authors: Jumadullaev Burkhan , Jabborov Shermat , Sobirkhonov Abrolkxon , Saidova Risolatkhon
Published: March 2024

The article presents the effect of senage made during the wax ripening period of the grain of the head of the triticale plant from intermediate crops, as well as their effect on the productivity and fertility of cows when using silage prepared during the wax ripening period of corn grain as a low-concentrate type feed. Keywords: feed unit, exchangeable energy, dry matter, milk productivity, protein, fat, kletchatka, carbohydrate, vitamin, hormone, impotence, sexual predisposition, service-cycle.
Genetic reasons for the migration of the local population bees in Uzbekistan
Authors: Juraeva Dildora , Turaev Omon
Published: March 2024

The article presents the genetic reasons for the emergence of a large number of sources in Uzbekistan, information on the increase of macro- and microelements in the body of migratory bees.
Assessing construction costs for agricultural facilities: organizational and technological strategies
Authors: Prykina Larisa , Belyantseva Oksana , Serebryakova Elena
Published: March 2024

The relevance of the study is caused by the complexity of calculations when determining the cost for construction of agricultural facilities due to the multi-parameter system, which includes volume, structure, areas and objects of investment. Ensuring the effectiveness of capital investments through the use and implementation of advanced and latest solutions, technologies and other conditions of the investor in relation to the level of technical equipment and quality of the facility will allow obtaining a competitive facility and a profitable result. As a result of the study, the theoretical foundations of managing the cost of an investment and construction project were studied, an analysis of management methods and practical recommendations for justifying the cost of an investment and construction project were carried out in order to develop recommendations for cost reduction. The methodological basis of the study is: system analysis, methods of expert assessment, comparisons, analogies, analysis of absolute and relative indicators and others. To solve the problems, a combination of general scientific methods such as scientific observation, comparison, measurement, abstraction, modeling, induction and deduction, historical method, abstractions and concretizations, alongside specific methods including economic-statistical, analytical-calculation, functional-cost, and expert approaches were used. The practical significance of the work carried out is the development of a method for assessing cost management of an investment and construction project. The developed method has all the prerequisites for successful application in the real activities of the organization under study.
Numerical simulation of the defect's behavior in building structure elements during ultrasonic diagnostics
Authors: Dolgov Vasilii , Beskopylny Nikita
Published: March 2024

One of the important scientific problems of modern construction is the detection of cracks in elements of building structures. Among a significant number of methods, ultrasound diagnostics is popular due to automation and speed of processing results. However, the accuracy of ultrasonic methods is in the range of 40%, which does not meet modern requirements. The article considers the problem of ultrasonic wave propagation in a brick and conducts a numerical analysis of the behavior of defects in the form of a crack. The results were obtained in the form of fields of displacements, deformations and stresses in the structure as a function of time. The results obtained make it possible to identify the characteristic features of the reaction of defects to dynamic impact and obtain numerical dependences of the response of the structure in comparison with samples without defects.
Dependence of changes in the nominal heat flow of tubular heating devices on their design features
Authors: Sargsyan Samvel , Agafonova Vera
Published: March 2024

The article is devoted to determining the nominal heat flow of a steel tubular heating device depending on the location of the pipes (vertical or horizontal), the number and diameter of pipes, as well as the value of the heat transfer coefficient. The main advantages and disadvantages of steel tubular heating devices are given. It has been determined that the mode of heat flow along the pipes in a tubular heating device changes from laminar to turbulent. As a result of the research, it was found that with a vertical arrangement of pipes in a heating device, when the coolant temperature in the pipes is 90-95°C, the height of the transition zone from laminar flow to turbulent flow varies in the range from 0.75 m to 1.25 m. If the tubular heating device is structurally made with horizontally located pipes, then the transition from the laminar flow regime to the turbulent regime is not observed. A dependence has been derived that allows one to determine the nominal heat flow of a steel tubular radiator depending on the height, number of sections, as well as the design features of the tubular heating device. A comparative analysis of changes in the nominal heat flow of a tubular heating device was carried out depending on the height, number of sections, design features, as well as the orientation of the pipes in the section. The nominal heat flux of a tubular radiator varies depending on the orientation of the pipes. It is shown that with a vertical arrangement of a tubular radiator, the value of the nominal heat flux exceeds the same value with a horizontal arrangement.
Development of an express risk assessment in tender participation for contracting construction organizations in civil and agro-industrial construction
Authors: Bovsunovskaya Maria , Polishchuk Maria
Published: March 2024

Participation in a tender is an integral part of the activities of contracting construction organizations. The difficulty lies in the fact that contractors have to make a decision on participation or non-participation in the tender quite quickly from the moment the customer posts information about the procurement. Incorrect decisions made by the contractor at this stage lead to lost profits, financial losses, ineffectiveness, loss of reputation and other unpleasant consequences. To level out this situation, the paper describes existing approaches to assessing the risks of participation in tender activities, which can protect the contractor from participating in unwanted procurement. In order to assess the feasibility of participating in a procurement, the authors propose the development of an algorithm for express risk assessment of a contractor's participation in a tender, which suggests, under limited time, to make a reasonable decision on the need to participate in a particular tender. This requires a qualitative and quantitative assessment of the contractor’s main risks, which are combined into two main groups: the risk of loosing the tender and the risk of future losses. The authors propose methods for assessing risks and classifying them as high, medium and low levels. The paper provides an example of practical testing of the proposed express assessment.
Synthesis and study of some physicochemical features of Co-Pt nanostructured system
Authors: Zakharov Nikita , Tikhonova Irina , Popova Anna , Pugachev Valery , Dodonov Vadim , Prosvirin Igor , Krasheninin Viktor , Zakharov Yuri
Published: March 2024

In the work by methods of XRD, TEM, SAED, XPS combined with mass-spectrometry of gaseous products, SAXS, and elemental analysis of samples the phase compositions and morphology of particles of nanostructured Co-Pt system synthesized by the method of reduction of hydrazine-hydrate aqueous solutions of precursors were studied (in the region rich in Pt for the first time). It was found that in the composition range up to ≈ 60 at. % Co. XRD-analysis of synthesized samples fixes as the only FCC phase of solid solution of Co in Pt, with the established upper limit of solubility %18±1 at. At the content of Co above the limit, along with it, the X-ray diffraction unregistered phases with the content of Co above the limit in solid solution are also formed. Their presence was confirmed by the SAXS method, and their metallic nature (not oxide-hydroxide) nature follows from the results of XRD, SAED. When FCC phase formed metal reduction process proceeded directly without cobalt hydroxides forming. According to results of XPS with the Ar-etching of samples there were internal platinum-rich sub-regions in Co-Pt nanoalloys.
Method for calculating the uncertainty of toxicity of combustion products
Authors: Mukhamedzhanova Olga , Kovaleva Sofya
Published: March 2024

To ensure the reliability and accuracy of tests (measurements),the testing laboratory must calculate the measurement uncertainty for eachtest method and reflect this characteristic in its test (measurement) reports.Calculation of test uncertainty is carried out using various methods. In thisarticle, the uncertainty calculation was carried out using the least squaresmethod, when the desired value of the output parameter is determined fromthe graph. For this purpose, a series of tests was carried out: the toxicity ofcombustion products was determined from the lethality of white laboratorymice and a graph of this dependence was plotted. The graph determines thetoxicity of combustion products at 50% lethality of white laboratory mice.Using the least squares method, confidence limits for the estimate of themeasured value were calculated and graphically shown in this graph. As aresult of calculations, the uncertainty of the toxicity of combustionproducts is about 25%; such a large scatter of data using this methodconsists of the error of the measuring equipment and the calibration of thisequipment, the test sample and its composition, as well as thecharacteristics of white laboratory mice and their behavior. These resultsfor calculating test uncertainty can be used for testing laboratories thatconduct fire safety tests of materials.
Analyzing quality of interaction between participants in the construction control system
Authors: Kuzmina Тatyana , Bolshakova Polina
Published: March 2024

The construction control system is complex and its functioningrequires coordinated and prompt interaction without the occurrence offailures and conflict situations. The paper identifies factors influencing theoperation of the system and specific processes, the approach to whichshould be reconsidered. The research methods used included the method ofexpert assessments, statistical data analysis, and the Varimax rotationmethod. As a result of the study, the 3 most significant factors influencingthe construction control system were identified, and the need to introduce aUnified Information Environment was substantiated. Reducing the level ofinfluence of factors will contribute to more successful functioning of theconstruction control system and the interaction of system participants with each other.
Methodology for assessing the effectiveness of design and technological solutions in ensuring the service life of power connections of structures
Authors: Deniskina Antonina , Kravchenko Georgy , Ageeva Elena , Linkov Nickolay
Published: March 2024

Abstract: A methodology for designing the load-bearing capacity of power parts of machines and structures operating under variable loading conditions is presented, which allows assessing the effectiveness of design and technological solutions based on the criteria of fatigue strength, durability and guaranteed service life. The technique is based on the force calculation of parts and assemblies, the formation of an equivalent block of variable loading, the calculation of the endurance limit in a statistical aspect and the determination of the fatigue life at a given level of reliability. The presented methodology is based on a specific example of calculating and assessing the durability of the elements of the fork connector of the fin and fuselage of a passenger aircraft.
Green loans and projects aimed at protecting the environment and increasing the sustainability of the economy
Authors: Niyazbekova Shakizada , Semenov Alexander , Syzdykova Elmira , Irisheva Aigul , Bikashev Danat , Varzin Vasiliy
Published: March 2024

The study examines the transition to a sustainable global economy, which requires countries to encourage and stimulate investments that bring environmental benefits. Due to the growing pressure on governments to reduce greenhouse gas emissions and reduce all types of pollution, so–called green finance has assumed an important role by providing governments. The study noted that green finance uses the power of markets to allow investors and businesses to make money, as well as save the planet. Green loans are loans that are provided to finance environmental projects aimed at improving the environmental situation and reducing the negative impact on the environment. Such projects may include the installation of equipment for the use of renewable energy sources, improvement of waste management systems or the introduction of technologies aimed at reducing emissions of harmful substances. Green loans can be businesses and often have lower interest rates compared to conventional loans.
Development of virtual hunting tourism as the basis for the conservation of pristine wildlife
Authors: Selivanov Victor , Rudenko Marina , Makoveichuk Yan , Makoveichuk Krystina , Nekhaychuk Dmitry , Dorofeeva Anna , Kryukova Anastasia , Mayorova Angela
Published: March 2024

Many people in today's society still enjoy hunting as a hobby to relax and disconnect from their busy daily lives. The Crimean Peninsula, located on the Black Sea coast, is not only famous for its history, natural landscapes and resorts, but is also one of the most popular places for hunting tourism. Magnificent natural conditions, a variety of wildlife and seasonal migrations make the peninsula an ideal place for hunting and adventure, surrounded by spectacular scenery. Crimean hunting tourism offers a unique opportunity not only to plunge into the world of hunting passions, but also to enjoy all the delights of the peninsula. The relevance of studying the development of a tourist and recreational hunting tourism project is due to the actively developing market for the provision of services in the field of hunting in our country. But the hunting resources of the Crimean forests are not limitless. The possibility of replacing real hunting tourism with virtual tourism with the help of modern IT technologies (VR, AR) is the goal of our research. Thanks to this approach, a potential hunter can feel like he is in a real wild environment, but at the same time know that his life is not in serious danger. In addition, the important task of preserving endangered animal species in the wild is being solved.
Religious tourism as a moral basis for preserving the ecology of the region
Authors: Ryndach Marina , Kazak Anatoliy , Sergeeva Yelena , Selivanov Victor , Gurevskikh Olga , Dolgushina Yulia , Kryukova Anastasia
Published: March 2024

The paper examines the possibilities of the active influence of religious tourism on the preservation of the ecology of tourist regions. Currently, religious tourism is becoming more popular, every year more and more people are looking for peace in religious (often historical) monasteries, away from noisy cities and all-inclusive hotels. This article substantiates the idea that religious tourism is not only an opportunity to study the history of the emergence and development of a people, but also to gain new emotions by learning such enduring concepts as morality, humility, goodness, decency, faith. Many temples and monasteries are located in unique regions: in the mountains, on steppe plains or in virgin forests. Such a variety of landscapes in which holy monasteries are located makes it possible to realize all the greatness and uniqueness of nature, to awaken a desire to preserve it in its original form. Staying in holy monasteries is another opportunity for those who want to understand the essence and uniqueness of the world around us. This paper is also devoted to a philosophical understanding of the problem of the influence of religion on human behavior and attitude towards nature. Religion instills in a person responsibility for his actions. It is the moral institution of society. One of the goals of religion is the need to achieve a respectful attitude towards life. The prospect of a gradual improvement in the global environmental situation is largely associated with the revival of spiritual values and religious and ethnic norms.
Diabète sucré et pancréatites
Authors: Mantelli Morgane
Published: March 2024

Le diabète sucré (DS) est l’une des maladies hormonales les plus fréquemment diagnostiquées. Les pancréatites, principalement les formes chroniques, sont souvent retrouvées chez les animaux diabétiques. Pour autant, il n’est pas toujours établi quelle affection est primitive. Les pancréatites peuvent compliquer la gestion du diabète sucré à la fois en réduisant la sécrétion d’insuline et en induisant une insulinorésistance périphérique. Une surveillance rapprochée de la glycémie est nécessaire chez ces animaux. En cas de pancréatite aiguë concomitante au diagnostic de diabète sucré, la rémission après résolution de la pancréatite est possible chez le chat. Une hospitalisation est parfois nécessaire en cas d’altération marquée de l’état général et de pancréatite aiguë. En revanche, une gestion au domicile est préférable pour les animaux stables atteints de pancréatite chronique. L’insulinothérapie n’est pas toujours modifiée par le diagnostic de pancréatite. Il est parfois nécessaire de choisir temporairement une insuline rapide chez les animaux dysorexiques et/ou hospitalisés.
Construction and exploration of the practical teaching system for course-based ideological and political education in undergraduate specialty of food quality and safety
Authors: Yuan Gaofeng
Published: March 2024

The practical teaching system for course-based ideological and political education in undergraduate specialty of food quality and safety in our university were constructed and explored. The training objectives and plans was optimized. The professional ideological and political practice teaching system with two dimensions and progressive levels of time and space was reformed. The integration of ideological and political elements and practical teaching content was explored. Our efforts have yielded positive results. In order to foster students’ professional ethics of love and dedication, and enhance the cultivation of professional innovative and applied talents, continuous and long-term exploration and practice are required.
Study on English Translation of Chinese Quantifiers from the Perspective of Cognitive Iconicity: A Pilot Study
Authors: Liu Ying , Lu Weizhong
Published: March 2024

Chinese quantifiers are heavily loaded with Chinese culture, making it challenging to translate them into idiomatic English. The majority of earlier studies only examined linguistically the English translations of Chinese quantifiers. The interpretation of linguistic information, however, is a developing and pivotal stage of cognition in the translation process. Under the umbrella of cognitive iconicity, the research of cognitive distance between linguistic forms is being conducted. Therefore, it makes sense to talk about cognitive iconicity while discussing the English translation of Chinese nominal quantifiers. Based on the definition as well as the function of Chinese quantifiers, this research summarized four translation methods from a viewpoint of individual nominal quantifiers, namely, the omission of iconicity, the retention of iconicity, the conversion of iconicity, and the addition of iconicity. And then it further discussed the selection process of English translation version of Chinese nominal quantifiers.
Practices and bidirectional advantages analysis of combined-class teaching of Chinese and international students
Authors: Sun Ning
Published: March 2024

Combined-class teaching of Chinese and international students is an innovate teaching mode which organizes Chinese and international students together to perform teaching activities. This paper studies the practices of combined-class teaching of Chinese and international students based on online and offline teaching method. It introduces the bidirectional demands, theoretical support, teaching design, implementation and advantages of combined-class teaching. Two different combined-teaching modes are detailed analyzed. It explores the characteristics as well as specifications. This paper also points out the problems in combined-class teaching practices, and proposes some solutions for further teaching reform at the aim of providing more possibilities for international students’ education as well as enriching the teaching strategies of online and offline teaching method.