bluuebunny/crossref_metadata_2025 huggingface dataset:
Research of the stability of low-calorie mayonnaises and development of their formulation
Authors: Majidova Nargiza , Bozorov Dilmurod , Rakhmonov Kakhramon , Akramova Parvina
Published: July 2024

New formulation of mayonnaise using biologically active additives and surface-active substances have been studied. The stability features of new formulation of mayonnaise at different fat contents have been analyzed. The organoleptic indicators and physical-chemical characteristics of low-calorie mayonnaises with new types of food additives and thickeners have been established by offering optimal technological modes that ensure high quality and long-term preservation of low-calorie mayonnaises. The research results have been recommended for industrial application. When developing mayonnaise recipes with different fat phase contents and a reduced amount of egg powder, it was necessary to preserve, in addition to stability, the taste of the product. The use of milk concentrate as an emulsion thickener instead of egg powder leads to a fivefold increase in the limit of plastic strength of mayonnaise at 65% fat phase content. Dairy concentrates can be recommended for targeted regulation of the structural and rheological properties of low-calorie mayonnaises in a wide temperature range.
The effectiveness of a feed additive with galloisite in rat mycotoxicosis
Authors: Tarasova Evgenya , Matrosova Lilia , Kashevarov Gleb , Tanaseva Svetlana , Ermolaeva Olga , Sofronova Anastasia , Mishina Nailya , Valiullin Lenar , Mukhammadiev Rishat , Semenov Eduard
Published: July 2024

The paper presents the results of assessing the effectiveness of a complex feed additive based on halloysite for experimental T-2, afla- and zearalenone toxicosis of white rats in terms of survival, changes in clinical condition, enzyme status of blood serum and spleen ultrastructure. The results presented in the article confirmed the danger of the combined effects of mycotoxins on the body of white rats. The presence of mycotoxins in the feed led to the death of 30.0% of rats with a change in the clinical condition of the surviving animals, a significant increase in the serum levels of aminotransferases, alkaline phosphatase, lactate dehydrogenase, creatine kinase and gamma-glutamyltransferase, as well as changes in the ultrastructure of the spleen. A normalizing effect of a food additive based on halloysite on the studied parameters in experimental combined mycotoxicosis was noted, which was manifested by 100% survival of rats, less pronounced changes in the enzyme status and a protective effect on the ultrastructure of the spleen. This makes it promising for further comprehensive research on productive animal species with the prospect of implementation in animal husbandry as an effective means of preventing combined mycotoxicoses.
Marmalade with the use of plant materials for diabetic nutrition
Authors: Mikhailova Svetlana , Mikhailov Egor
Published: July 2024

In the Russian Federation, as well as in other countries of the world, the prevalence of diabetes continues to increase. Currently, the number of patients is more than 5 million people. The leading direction in the field of nutrition is the creation of a product range that help improve human health when consumed as part of the diet. Research related to the creation of products containing sweeteners is relevant. This development is aimed at expanding the range of diabetic products, namely the creation of a confectionery product (jelly marmalade) replacing sugar with a plant product - yacon powder, which contains fructooligosaccharides. The research made it possible to create a product with good organoleptic characteristics. According to physical and chemical indicators, the resulting sample meets the requirements of regulatory documentation. The use of yacon powder and pomegranate juice in the product formulation improved the biological value of the marmalade. The resulting confectionery product is highly important for increasing the range of diabetic products.
Aberdeen Angus beef quality and profitability in dependence of the genotypes
Authors: Konovalova Elena , Romanenkova Olga , Evstafeva Liliia , Safonova Stanislava , Selionova Marina , Gladyr Elena
Published: July 2024

The study of the influence of some candidate genes on beef cattle productivity has been conducted. The Aberdeen Angus bulls (n=9) of Russian population have been genotyped on leptin, calpain 1 and calpastatin gene polymorphisms by earlier developed own test systems based on PCRRFLP and RT-PCR methods. The data of live weight, carcass weight and yield, content in the carcass of premium cuts, meat pulp, fat and trimming and broth bones have been registered. In addition, the profits of the sale of bulls` beef has been counted. The correlation analyses has shown the higher live weight and more content in the carcasses of premium cuts and meat pulp in beef obtained from animals of CC-Arg4Cys LEP, GG-CAPN1_316, TTCAPN1_ 4751, GG-CAST_282 and GG-CAST_2959 genotypes. The cost of the sale of these animals` beef was also higher due more content of the most expensive cuts in their carcasses. We have concluded that the studied gene polymorphisms could be perspective genetic markers on meat productivity provided the conduction of the investigation of largescale correlation analysis of the allele variants with the phenotype appearances with the further study of the gene expression, confirming their significant influence on the beef production and quality.
Methods of increasing the physical and mechanical strength of the working surface of rolling rolls
Authors: Chernyshev Alexey , Razumkina Natalia , Tatarnikov Nikolay , Parshin Alexander , Shatov Igor
Published: July 2024

The article discusses the problem of rapid wear of the work rolls of a twenty-high rolling mill for plastic deformation of nitinol. The purpose of this study is a comparative analysis of hardening methods and the feasibility of their use to increase the hardness of a roller tool. As a result, a method of ion implantation of work rolls with boron and nitrogen was identified that is preferable for implementation and deeper experimental study.
Thermal radiator sensor
Authors: Urinov Khudoyor , Jumanov Khakberdi , Mirzokulov Khotam , Xidirov Abduvali , Amonov Adham , Sharipov Mirzo , Urinov Jamshid
Published: July 2024

This study addresses the challenges of simplifying the design for measuring the thermomagnetic properties of thin magnetic films and developing a novel thermal radiation sensor. The proposed sensor features a vanadium dioxide (VO2) film element that converts heat flow into a thermoelectric current. A reflective screen, electrically isolated from the film, covers part of its surface. The film includes electrical contacts with current leads. This innovative design enables the measurement of thermomagnetic properties and offers a new approach for thermal radiation sensing.
MPI task mapping for multi-cluster HPC systems
Authors: Paznikov A.A. , Kurnosov M.G.
Published: July 2024

Leveraging graph partitioning techniques is a fundamental framework. This research paper presents an innovative method accompanied by heuristic algorithms designed for the mapping of parallel MPI-programs for hierarchical HPC systems. The proposed approach aims to enhance performance by distributing highly interactive processes to processor cores interconnected through high-speed communication channels. Notably, our method takes into meticulous account all hierarchical layers within the communication network of the HPC systems. Additionally, we offer empirical insights derived from the mapping of MPI programs extracted from the SPEC MPI and NAS Parallel Benchmarks collections into a geographically distributed multi-cluster HPC system.
Methology of experimental research of voltage quality in electrical circuit
Authors: Boynazarov Gayrat , Tovbaev Akram , Usarov Uktam
Published: July 2024

This study investigates the causes of electricity quality deterioration and proposes measures to mitigate it. The analysis focuses on the technical conditions for connecting consumers to the electricity network and the necessary conditions for electricity supply. It is recognized that, in addition to quality indicators, auxiliary parameters describing energy quality in terms of current and voltage must be measured. The study presents a graphical approach to analyzing measurement results, comparing load control graphs with energy quality indicator graphs over a 30-minute time interval. The results consider not only compliance with regulatory requirements but also the fulfillment of obligations to ensure electricity quality.
ESG financing instruments in the context of sustainable development of regional infrastructure
Authors: Chernykh Daria , Ezangina Irina , Khryseva Anna , Kozhukhova Margarita , Vorotilova Olga
Published: July 2024

The work proves the importance of the ESG approach in implementing the goals and objectives of the sustainable development strategy of a modern bank, which is an integral element of its overall strategy. Attention is paid to the basic tools and principles of responsible financing in the practice of Russian credit institutions. It has been proven that, following their own model of corporate social responsibility, banks participate in the development of infrastructure, industries and areas of activity at the regional level, helping to increase the investment attractiveness of territories and their spatial development.
Research of the rotation frequency of the working parts of an auger cleaner
Authors: Rakhmonov Khayriddin , Matyakubova Jumagul
Published: July 2024

The paper presents the results of a study of the working parts of a screw intended for transportation, drying, and cleaning of raw cotton at high productivity. The problem of the dynamics of a machine unit with a mechanism of camshafts in distribution devices of raw cotton during their storage has been solved and an analytical form of the law of changes in the technological load on the camshafts has been obtained, taking into account the results of experimental studies. An oscillogram of the camshaft at idle speed was experimentally obtained. Using the calibration of the measuring channel and the calibration coefficient was determined from the calibration graph, also used the fast Fourier transform method and converted the resulting amplitude value into current units of “ampere”, changes in the power of the electric motor of the shaft, cam, and screw for idle speed were obtained in the form of a graph and the value was determined torque of the electric motor equal to Me=0.91 N·m.
Information modeling of agricultural water supply and sanitation facilities
Authors: Alekseev Stanislav , Alekseeva Tatyana
Published: July 2024

This study examines the features of developing an information model for water supply and sanitation facilities serving agricultural production. An analysis of the requirements for attribute data of the information model elements was conducted, and the characteristics of forming these data were studied. Based on the findings, recommendations for information modeling of agricultural water supply and sanitation facilities are proposed. The implementation of the research results will accelerate the transition to a life cycle management system for such facilities. This is expected to contribute to an increase in the quality of water supply and sanitation services in agricultural production, which will have a positive impact on its overall development. The key aspects addressed in this study include: identifying the requirements for attribute data in the information model; analyzing the characteristics of forming the attribute data; proposing recommendations for effective information modeling of agricultural water supply and sanitation facilities and outlining the benefits of implementing a life cycle management system for these facilities. By addressing these critical elements, the study aims to support the digital transformation of agricultural water infrastructure and enhance the efficiency and sustainability of water supply and sanitation services in the agricultural sector.
On the issue of charging traction batteries for mainline road transport
Authors: Nesterenko Grigory , Nesterenko Irina , Khudiakova Vera , Orekhovskaya Alexandra , Zyryanov Vladimir , Zagidullin Ramil , Andronov Alexandr
Published: July 2024

The preservation of the environment is a very urgent task today. In this regard, work is underway in many countries of the world on the design and production of electric vehicles. However, the operation of such vehicles is inextricably linked with the creation of an infrastructure for charging traction batteries. In urban conditions, the construction of infrastructure does not require the creation of special conditions. To ensure long-distance transportation, the use of electric vehicles is hampered by the lack of supply of electric power, and, consequently, the infrastructure for charging traction batteries. The solution to this problem may be the installation of an electric power generation unit on a vehicle directly during movement. This installation must ensure the necessary level of environmental friendliness during operation. These installations can run on hydrogen or natural gas. In this paper, the possibility of using a hydrogen fuel cell power plant to recharge traction batteries in transport is considered.
Environmental risks in the application of hydraulic fracturing technology in the oil industry
Authors: Ignatova Marina , Chunikhina Anna , Kuzmina Violetta , Levshakova Sofia
Published: July 2024

Various environmental risks associated with promising hydraulic fracturing technology for carbon extraction have been studied. A comparative analysis of the use of hydraulic fracturing technology in the USA, EU countries and Russia has been carried out, and it is shown that in Europe and in the USA this technology is prohibited, not without the help of environmental activists. In Russia, some oil producing enterprises implementing similar technology when drilling wells in the Khanty- Mansiysk and Yamalo-Nenets Autonomous Districts are also implementing a modernized technology called multi-stage hydraulic fracturing. This technology makes it possible to increase efficiency in hard-to-recover oil reservoirs. The methods of hydraulic fracturing technology optimization are proposed in order to increase its efficiency and reduce environmental risks when using this technology.
Production of yoghurts by incorporating stevia powder as a functional ingredient
Authors: Maksumova Dilrabo , Tairova Kamola , Shosalimova Shaxzoda , Akramova Rano , Rifky Mohamed
Published: July 2024

The functional ingredients in yoghurt are a trending topic and they are easily degradable increasing the usage in food and agriculture industry. The yogurt is combined with the volatile components of stevia powder while adhering to the conventional method. This yoghurt's effectiveness was determined by analyzing its chemical composition, microbiological makeup, and sensory assessment when stevia powder was added. The results implied that sample 1 showed that a liquid mass had formed, which did not give the result we expected. Sample 2 was found to be a homogeneous, thick, viscous mass, and sample 3 was found exactly what we expected: a homogeneous mass with the same viscosity. The taste and smell became specific and white. As a result, T3 was approved and subjected to additional testing for the presence of mold and live bacteria in yoghurt. The results of these tests showed that the bioactive ingredient contained in the yoghurt was reducing the microbial counts.
Green technologies of AIC waste recycling
Authors: Dzhancharov Turmushbek , Fedotova Ayuna , Larionova Irina , Ershova Irina , Tsitsige
Published: July 2024

Modern economic models based on constant production of goods and products based on primary resources have led to the problem of accumulation of unnecessary fractions, waste, and reduction of natural resources. The environment is under anthropogenic pressure and is subject to biodiversity decline due to anthropogenic processes. The time has come for a paradigm shift in the worldview of man's place in the environment and his attitude to its use. The accumulated stocks of production and consumption waste should be rationally applied as secondary resources in other industries. To this end, the paper presents new technological solutions within the concept of cyclic economy for the processing of waste from the AIC sphere.
Efficiency of new growth regulators in growing daikon
Authors: Bocharova Maria , Dyikanova Marina , Vorobyev Michael
Published: July 2024

The paper presents the results of research on the effectiveness of using new plant growth regulators (PGRs) of carbamates and oxamates series on daikon when treating seed material. The effect of growth regulators on seed quality, growth, and yield of daikon (Raphanus sativus L. subsp. acanthiformis Stanken.) of Sasha variety was studied. The research was conducted in laboratory-field conditions from 2022 to 2023 at the Educational Scientific and Production Center for Horticulture and Vegetable Growing named after V.I. Edelstein. In both laboratory and field experiments, the seed material was treated once, followed by plant development using classical technology. All treatments applied had a stimulating effect on seed germination and showed statistically significant differences compared to the control variant. Treatment of seed material with growth regulators of the carbamate series had a significant effect on the size of the assimilation apparatus. The maximum root crop weight was recorded in the variant with the Kartolin-2 preparation, with a difference compared to the control variant of 15%. The obtained data over two years on average showed an increase in yield by 9% and 12% in variants treated with Oxamate and Kartolin-2 preparations.
Receipt of new catalysts used in the synthesis of acetaldehyde by separating the catalyst CCP into component parts
Authors: Ruzikulova Nigina , Vapoev Khusnitdin , Turdieva Odina , Kodirov Sardor
Published: July 2024

New catalysts have been developed and studied for the synthesis of acetaldehyde and acetone in combination with acetylene hydration. The composition of the feedstock CCP catalyst used in the acetaldehyde synthesis was analyzed and identified. Based on the analysis results, active cadmium oxide was separated from the CCP catalyst composition, and new BCC-1, BCC-2, BCC-3, BCC-4, BCC-5, BCC-6, BCC-7, BCC-8, BCC-9 catalysts were prepared. These catalysts were tested, and during the acetaldehyde synthesis process, the BCC-7 catalyst yielded a high efficiency (65.7%). Optimal conditions were determined for the synthesis of acetaldehyde and acetone. Bentonite mineral was used as a core in the preparation of this catalyst. There are different brands of bentonite mineral, and Bentonite (PBG) brand mineral was used for BCC-7 catalyst. The high content of aluminum oxide in this mineral increases the strength of the catalyst.
Development and properties study of a composition of polypropylene with polyethylene terephthalate
Authors: Mukhiddinov Bakhodir , Tilavova Lola , Sharipov San’at , Akhtamov Dilshod
Published: July 2024

The article presents the results of a study on the technological and thermal properties of compositions based on waste polyethylene terephthalate (PET) and polypropylene (PP), such as melt flow rate, melting point, heat resistance according to the Vicat softening temperature, strength, elongation at break, and modulus of elasticity under tension. The melt flow rate was measured under standard conditions. Unfortunately, the study found that the addition of PET waste to PP compositions resulted in a slight reduction in the melt flow index value. One of the important parameters for the practical application of polymer materials is their heat resistance. We evaluated the thermal stability properties of the PP and PET blends using the Vick method. Additionally, we calculated the melting temperatures, decomposition temperatures, molecular packing coefficients, and Hildebrand solubility parameters of the polymers and their blends using an incremental method. The thermal characteristics of a polyethylene terephthalate composition with both primary and secondary polypropylene were studied using the derivatographic method. The results of the analysis of dynamic thermogravimetric curves, thermogravimetric derivatives, and differential scanning calorimetry data for a PET composition with both PP types are presented.
Integrated utilization of secondary wood resources: A case study of sawmill waste
Authors: Zyryanov Mikhail , Medvedev Sergey
Published: July 2024

This paper assesses the relevance of the problem of waste generation and use at sawmills. An analysis of the process of formation of wood waste in the form of sawdust was carried out depending on the equipment and technology used at the enterprise. The feasibility of adding sawdust to wood concrete blocks, which are widely used in the construction of both residential and non-residential buildings and structures, is substantiated. As a result, the purpose of this research was to scientifically substantiate the effectiveness of the production of wood concrete blocks with the addition of sawdust waste in the form of sawdust. During the work, methods of statistical and analytical analysis were used. The results of laboratory studies of the production of wood concrete blocks with the addition of sawdust from softwood and hardwood are presented. The results of laboratory studies were processed, regression dependencies were developed and graphical dependencies were constructed. The results of this research can be widely used in the timber industry, as well as in the production of building materials.
Justification of the choice of wall material for low-rise construction
Authors: Dolmatov Sergey , Soboleva Anastasia , Voinash Sergey , Sokolova Viktoriia , Orekhovskaya Alexandra , Balabanova Yuliya , Gaiduk Albina
Published: July 2024

The study analyzed the thermal performance of enclosing structures made of: polystyrene concrete, heat block, arbolite blocks, foam concrete and aerated concrete. The calculation of heat losses was carried out using finite element methods, in the software package “Elcut”. The results of the study showed that the enclosing structure in the form of a wall consisting of aerated concrete blocks will be most effective in terms of heat conservation. In order to identify the most affordable and economical material for the construction of a house with an estimated area of 100 m2, an enlarged calculation was carried out, including determining the cost of building material necessary for the construction of an enclosing structure. According to the calculation results, the most expensive technologies turned out to be construction options from aerated concrete blocks and a heat block. The house made of wood-mineral composites (arbolite) turned out to be the most inexpensive. The materials of the work can be used by developers in the selection and justification of materials for wall structures of low-rise construction.
Investigation of the installation for the preparation of mixtures in the vane pump mode
Authors: Solonshickov Pavel , Tolstoukhova Irina , Shevchenko Artem
Published: July 2024

The article covers a review and analysis of centrifugal (vane) pumps produced and manufactured in our country and abroad. Among the variety of requirements for the design of pumps, the fundamental ones were identified, which directly affect the course of the technological process as a whole. Based on the analysis and review, a method for determining the design parameters of the pump has been developed and described. In this case, the described technique can be used when developing mixers using a centrifugal (blade) wheel. Using the described methodology, an impeller was developed and the technological process of its operation was described. In the course of theoretical calculations, a regression equation was obtained to determine the pressure at different speeds of the impeller shaft, taking into account the corresponding resistances, depending on the feed. Experimental and theoretical studies have confirmed the design of the developed wheel for a mixing plant based on a vane pump. At the same time, the nominal values of indicators such as flow, pressure, efficiency and useful power were obtained for various operating options of the installation. Thus, the installation showed its operating efficiency as for a conventional pump, which can move liquid and mixtures.
Investigation of the methods of starting and braking in the “Frequency converter asynchronous motor” system
Authors: Eshmurodov Ziyodullo , Abdullaev Shukhrat
Published: July 2024

Various start-up methods depending on the power of the asynchronous motors, the nature of the load: direct, autotransformer startup, star-to-Triangle sharpening of the spark plugs, launches using reactor, thyristor modifiers are taxied. The start-up current generates oscillation in the supply network, lowering the electrical energy quality, which negatively affects the electrical consumers being supplied from that network, especially at launch moment sensing values, frequent start-ups and reverses. The asynchronous motor with a short-circuited rotor has proven itself well as a driving link of various mechanisms due to its simple design, high reliability, and ease of maintenance. One of the disadvantages of BP is the high consumption of reactive power, especially at the moments of reducing the mechanical load on the shaft, which is typical for many actuators under the conditions of the technological process.
Pressure calculation in a roller pair
Authors: Annaev Nuriddin , Nazarov Odil , Tashpulatov Sarvar
Published: July 2024

As a result of studies on force interaction in a roller pair, a calculation formula was obtained for the specific pressure in a roller pair, for the case when the material being processed is elastically viscous and the rollers are drive. Analysis of the calculation formula showed that the specific pressure in the roller pair depends on the geometric parameters of the material being processed and the roller coating, the viscosity coefficient of the material being processed, and the strain rates of contacting bodies. A formula was obtained to determine the value of the strain coefficient of the processed material under recovery, providing conditions for conjugating strains in the compression and recovery zones.
Promising collection samples of hops as a basis for breeding work
Authors: Ivanova Inga , Dementiev Dmitriy , Osipova Julia
Published: July 2024

Colleagues from the Chuvash Research Institute of Agricultural Sciences have selected varieties from the existing hop collection with stable yield and quality indicators over the years. The varieties were evaluated by yield, alpha acid content, and phenological characteristics, and the coefficient of adaptability and variability to the natural and climatic conditions of Chuvashia was determined for three years 2021-2023. Based on the Selyaninov hydrothermal coefficient and yield over the past 3 years, the coefficient of correlation of yield with weather conditions for the selected varieties was calculated.
The bioclimatic potential of the Crimea
Authors: Ergina Elena , Smirnov Virtor , Novizky Maxsim , Novizkya Anna , Snegur Aleksandr
Published: July 2024

The assessment of the bioclimatic potential of the Crimean Peninsula according to the Shashko method is given. The main indicators in this technique are the sum of temperatures above 10 °C and humidity deficiency. It was found that there are high indicators of bioclimatic potential on the territory of the peninsula, but certain patterns are observed due to the geographical location of the territory. It is noted that the urgent tasks of the agrotechnological industry of the Republic of Crimea today are the reorientation of crop production industries to the production of other crops, taking into account the bioclimatic potential of the territory and the state of soil resources.
Selection of reference genes for quantitative gene expression analyses in pedunculate oak (Quercus robur L.) using real-time quantitative PCR
Authors: Zybinskaya Polina A. , Tretyakova Anna V.
Published: July 2024

Drought and desertification are global issues leading to numerous negative consequences, such as reducing the arable land area, decreasing soil fertility, and crop yield. An effective method to fight against degradation and desertification of agricultural lands is agroforestry, thus there is a need to obtain drought-resistant tree species for use in agroforestry on arid lands. One of the key species used for creating forest strips is pedunculate oak (Quercus robur L.). Understanding the molecular mechanisms of adaptation to drought conditions is necessary to obtain resistant tree species. Real-time quantitative PCR method allows studying gene expression changes under various stress factors, but accurate results require careful selection of reference genes. The aim of this study is to select reference genes for quantitative gene expression analysis of Q. robur using RT-qPCR. Modeling of soil drought in the laboratory conditions was conducted to evaluate the stability of housekeeping genes expression in Q. robur. The RT-qPCR data were analyzed using the RefFinder web tool. Results from various algorithms showed that ACT7 had the most stable expression, while EF1α had the least stable expression. ACT7 is recommended as the reference gene for gene expression studies of Q. robur under drought conditions.
Investigation of the biodegradation of polyvinyl chloride using modified rice starch
Authors: Istamov Hayot , Mukhiddinov Bakhodir , Toshtemirov Furqat , Tilavova Lola
Published: July 2024

A This article examines the effect of modified rice starch on the biodegradation of polyvinyl chloride (PVC), with an emphasis on changes in the physico-chemical and mechanical properties of the polymer. In light of the global growth in the production and consumption of PVC, which leads to an increase in the volume of its waste, the development of effective disposal methods is becoming a critical task. The study shows that the addition of rice starch to PVC significantly accelerates its biodegradation under the influence of soil microorganisms. The research methods included analysis of biodegradation in various types of soil, thermogravimetric, IR analysis, SEM analysis, as well as assessment of the physical and mechanical characteristics of samples before and after biodegradation. The results confirm the hypothesis that modification of PVC with rice starch not only contributes to faster biodegradation of the material, but also makes changes in its structure and properties, which opens up new prospects for the development of environmentally friendly polymer materials. These studies can be used to develop new approaches to the disposal and recycling of PVC, reducing its negative impact on the environment.
Comparative study of yield of winter wheat varieties
Authors: Tursunov Sotvoldi , Turakulov Dilmurod , Xojiyev Rustam , Sayfullayeva Nazokat , Bayramov Mansur
Published: July 2024

In the conditions of our country, it is an urgent task to provide the population with domestically grown wheat. In order to solve this problem, it is necessary to choose high-yielding wheat varieties with good grain quality, resistant to diseases and pests, suitable for the soil and climatic conditions of our country. is of great importance. In the article, this article was formed based on the data obtained from the experimental results of the comparative study of the growth, development and productivity of winter wheat varieties Chillaki, Kroshka and Tanya, and the appropriate conclusion was drawn. In addition, the duration of the development phases of winter wheat varieties was studied.
Study of a degenerate non-elliptic equation to model plasma heating
Authors: Ciarlet Patrick , Kachanovska Maryna , Peillon Étienne
Published: July 2024

In this manuscript, we study solutions to resonant Maxwell’s equations in heterogeneous plasmas. We concentrate on the phenomenon of upper-hybrid heating, which occurs in a localized region where electromagnetic waves transfer energy to the particles. In the 2D case, it can be modelled mathematically by the partial differential equation − div(α∇u) − w2u = 0, where the coefficient α is a smooth, sign-changing, real-valued function. Since the locus of the sign change is located within the plasma, the equation is non-elliptic, and degenerate. On the other hand, using the limiting absorption principle, one can build a family of elliptic equations that approximate the degenerate equation. Then, a natural question is to relate the solution of the degenerate equation, if it exists, to the family of solutions of the elliptic equations. For that, we assume that the family of solutions converges to a limit, which can be split into a regular part and a singular part, and that this limiting absorption solution is governed by the non-elliptic equation introduced above. One of the difficulties lies in the definition of appropriate norms and function spaces in order to be able to study the non-elliptic equation and its solutions. As a starting point, we revisit a prior work [Nicolopoulos et al., IMA J. Appl. Math. 85 (2020) 132–159] on this topic by Nicolopoulos et al., who proposed a variational formulation for the plasma heating problem. We improve the results they obtained, in particular by establishing existence and uniqueness of the solution, by making a different choice of function spaces. Also, we propose a series of numerical tests, comparing the numerical results of Nicolopoulos et al. to those obtained with our numerical method, for which we observe better convergence.
Prevalence and risk factors of Toxoplasma gondii infection in dairy cattle from the Western Region of Thailand
Authors: Wannapong Napasaporn , Lertwatcharasarakul Preeda , Rukkwamsuk Theera
Published: July 2024

In total, 901 dairy cow sera and data were collected from 51 farms in Nakhon Pathom, Ratchaburi and Kanchanaburi provinces (Western Region of Thailand). Serum samples were processed via the multispecies ELISA method to detect IgG antibodies against Toxoplasma gondii infection. The results demonstrated that the calculated true prevalence was 1.48% (95% CI, 0.64–2.75%) for the individual-level and 29.41% (95% CI, 18.71–43%) for the farm-level. The univariate risk factor analysis showed that the number of total owned cats, the presence of stray cats, and the frequency of cleaning per day were significant factors (p < 0.2). These three factors were subjected to logistic regression analysis, and the results revealed that the frequency of cleaning farms per day was a potential risk factor for T. gondii-seropositive farms (OR = 2.745, 95% CI, 1.15–8.69, p = 0.02). The frequency of cleaning might increase the T. gondii oocyst distribution within the barn area, thus increasing the possibility of infection. Our findings show that T. gondii continues to circulate in the dairy cow population in the western part of Thailand. The presence of cats on farms was not found to be associated with T. gondii infection, but the high frequency of cleaning the floor was, and contributed to the potential risk of infection.
Pricing and green quality decisions in two-stage green supply chain for substitutable green products: A game-theoretic approach
Authors: Gupta Shivendra Kumar , Mishra Vinod Kumar
Published: July 2024

Growing businesses are concerned with doing well both environmentally and economically. Pointing out this view, this paper explores the game theoretical approach (Stackelberg and Bertrand) for a two-echelon green supply chain where the duopolistic manufacturers produce two substitutable green products and sell their products through a common retailer. The demands for both green products are functions of the selling prices and green levels (GLs). The effects of power structures on optimal price and green level decisions and associated equilibrium decisions are examined in three scenarios. Firstly, trilateral competition manufacturer-led Stackelberg (MS); secondly, retailer-led Stackelberg (RS); and thirdly, vertical collaboration, and compares the optimal decisions analytically. Our investigations show that, in addition to increasing the product’s greening level, vertical collaboration creates a win–win situation for collaboration members, whereas the manufacturer outside the collaboration experiences a decline in profits. Additionally, we find that the overall profit from vertical collaboration is greater than the sum of the individual profits corresponding to two participants in the trilateral competition models (MS and RS). Further, a selection criterion is developed for retailer to select the most suitable manufacturer for vertical collaboration. Finally, a numerical example and a sensitivity analysis are performed to determine the impact of parameters.
Die Effektivität manueller Therapie beim Supinationstrauma
Authors: Etteldorf Mathias
Published: July 2024

Das Supinationstrauma ist eine der häufigsten Sportverletzungen weltweit. Die
Betroffenen klagen oft über persistierende Beschwerden mehrere Jahre nach dem
ersten Supinationstrauma. Bewegungsmangel sowie eine verminderte
gesundheitsbezogene Lebensqualität können die Folge sein. Manuelle Therapie ist
eine effektive Interventionsform bei muskuloskelettalen Erkrankungen und hat
möglicherweise eine positive Wirkung bei Patient*innen mit
Supinationstrauma.

Eine systematische Literaturübersichtsarbeit und Meta-Analyse wurden
durchgeführt. Mittels einer systematischen Literatursuche auf PubMed, Embase,
OVID, PEDro sowie Google Scholar wurden 14 RCTs in die qualitative Auswertung
eingeschlossen und anhand der PEDro-Skala und des Risk-of-Bias-Tools der
Cochrane Collaboration (RoB 2.0) bewertet. Danach wurden die Ergebnisparameter
„Bewegungsausmaß der Dorsalextension“, „Schmerz“ und „Funktion“ extrahiert und
miteinander verglichen.

Die 14 eingeschlossenen Studien verfügten über eine gute methodologische Qualität
und hatten ein geringes Bias-Risiko. Zwölf Studien wurden in die quantitative
Auswertung eingeschlossen. Für das Bewegungsausmaß der Dorsalextension ergab
sich ein gepoolter Effekt (g) von 1,08 (KI=0,20; 1,96), für den Schmerz ein
statistisch nicht-signifikanter Effekt (g) von 1,00 (KI=− 2,01; 0,01) und für
die Funktion ein statistisch nicht-signifikanter Effekt (g) von 0,36 (KI=− 0,32;
1,03).

Manuelle Therapie hat eine positive Wirkung auf das Bewegungsausmaß der
Dorsalextension. Keine Aussage kann über deren Wirkung auf die Funktion und
Schmerzen bei Patient*innen mit Supinationstrauma getroffen werden. Es gibt
Hinweise dafür, dass manuelle Therapie eine langfristige Wirkung auf das
Bewegungsausmaß der Dorsalextension bei Patient*innen mit Supinationstrauma
haben könnte.
Digitale Gesundheitskompetenz bei chronischen, nicht-spezifischen
Rückenschmerzen
Authors: Palisi Anna
Published: July 2024

Das Internet bietet zahlreiche Möglichkeiten, sich über Gesundheitsthemen zu
informieren. Nutzer*innen müssen einordnen, wie seriös die gefundenen
Informationen sind. Dies setzt eine digitale Gesundheitskompetenz (dGK) voraus,
die Fähigkeit, online wichtige Informationen zu finden, zu verstehen, zu
beurteilen und auf die eigene Situation anzuwenden. Die dGK der deutschen
Bevölkerung ist niedrig. Risikofaktoren für eine geringe dGK sind u. a. eine
niedrige Bildung, höheres Alter oder chronische Erkrankungen.

In dieser Untersuchung wurde anhand eines Fragebogens erfasst, wie hoch die dGK
von Personen mit chronischen, nicht-spezifischen Rückenschmerzen ist und ob es
einen Zusammenhang mit dem konkreten Vorgehen bei Online-Recherchen gibt.
Außerdem wurde erfasst, ob Betroffene qualitativ hochwertige Webseiten nutzen,
Qualitätsindikatoren von Gesundheitsinformationen (GI) kennen und ob dies die
Einschätzung der eigenen dGK beeinflusst.

Nach einer Online-Befragung konnten die Daten von 60 Personen ausgewertet werden.
Die mittlere dGK befindet sich auf einem problematischen Niveau. Es gab kein
konkretes Verhalten während der Online-Recherche, das signifikant mit einer
höheren bzw. niedrigeren dGK einherging. Auch die Nutzung hochwertiger Webseiten
war kein Unterscheidungskriterium, ebenso wenig wie die Kenntnis von
Qualitätsindikatoren von GI. Die Förderung der dGK von Personen mit chronischen,
nicht-spezifischen Rückenschmerzen ist dringend nötig.
Herpes Zoster bei entzündlich-rheumatischen Erkrankungen
Authors: Dartsch Ruth Charlotte , Al-Azem Nadine , Hasseli-Fräbel Rebecca
Published: July 2024

Der Herpes Zoster ist eine häufige Viruserkrankung, die meist nach einer jahrzehntelangen Latenz durch eine Reaktivierung einer Varizella-Zoster-Primärinfektion auftritt. Besonders betroffen sind ältere Personen sowie solche mit geschwächtem Immunsystem. Während der akuten Phase zeigen sich dermatombezogene Schmerzen sowie ein papulovesikuläres Exanthem. Die am häufigsten auftretende Komplikation ist die sehr schmerzhafte Post-Zoster-Neuralgie, die über Monate bis zu Jahren anhalten kann. Zur Prävention steht ein Totimpfstoff zur Verfügung, der von der Ständigen Impfkommission (STIKO) als Indikationsimpfung für Personen mit einem entsprechenden Risikoprofil ab dem 50. Lebensjahr sowie als Standardimpfung ab dem 60. Lebensjahr empfohlen wird.
Technik der Koloninterposition zum Ösophagusersatz beim Ösophaguskarzinom
Authors: Hoeppner Jens
Published: July 2024

Heutzutage wird nur verhältnismäßig selten und in ausgewählten Situationen anstelle des Magens ein Koloninterponat als Rekonstruktionsorgan für den Ersatz der Speiseröhre gewählt. Das Kolon ist ein bewährtes und zuverlässiges Organ für den tubulären Ersatz der Speiseröhre, wenn der Magen nicht für die Rekonstruktion der Speisepassage zur Verfügung steht. Die Koloninterposition ist eine insgesamt komplexe und komplikationsbehaftete Operation. Sie erfordert eine spezifische Indikationsstellung und eine gründliche präoperative Vorbereitung. Technisch stellt die Koloninterposition hohe Anforderungen insbesondere an die Auswahl und Präparation der vaskulären Versorgung des Rekonstruktionsorgans. Auch die Rekonstruktionsroute und Hochführung des Interponats zum Ösophagus und die Notwendigkeit der Anlage von 3 oder 4 gastrointestinalen Anastomosen stellen deutlich höhere Anforderungen als die Rekonstruktion mittels Magenschlauch. Insgesamt können trotz der deutlichen operationsbedingten Morbidität zumeist ein gutes funktionelles Ergebnis und eine gute Lebensqualität erreicht werden. Die in der eigenen Praxis erprobte Operationstechnik wird ausführlich beschrieben. Weiterhin wird auf Basis der vorhandenen Literatur eine Übersicht über die Ergebnisse insbesondere in Hinblick auf chirurgische Komplikationen und die Lebensqualität nach Koloninterposition gegeben.
Endoskopische Diagnostik und Therapie von malignen epithelialen Läsionen und ihren Vorläufern im Ösophagus
Authors: Wannhoff Andreas , Caca Karel
Published: July 2024

Die Endoskopie ist der Goldstandard für die Diagnose bösartiger Tumore des Ösophagus und ihrer Vorläuferläsionen. Darüber hinaus ist die endoskopische Behandlung dieser Vorläuferläsionen und des frühen Ösophaguskarzinoms gut untersucht und fest etabliert. Dazu gehören dysplastische Läsionen im Zusammenhang mit dem Barrett-Ösophagus und frühe Adenokarzinome sowie frühe Plattenepithelkarzinome des Ösophagus. Die Rolle der Endoskopie bei der Diagnose und Behandlung dieser Läsionen wird zusammenfassend dargestellt.
Food-based domestic violence and anemia among women in sexual unions in Nigeria: the effect of urbanization
Authors: Ajoseh Seun Mauton , Sifat Ridwan Islam , Whesu John Tasheyon
Published: July 2024

In 2019, 1.74 billion people worldwide had anemia. In Nigeria, women of reproductive age are the most affected. Domestic violence affects the anemia prevalence, but few studies have examined the influence of urbanization on women in heterosexual unions (currently married, and cohabiting between). Using the social determinants of health framework, we argue that food-based violence and anemia vary among women residing in rural and urban areas. We used the Chi-square test and logistic regression to analyze the 2018 Nigeria Demographic and Health Survey records (n = 10,499). The study showed that anemia occurs more among women in rural (66%) than in urban (34%) areas. In rural areas, anemia was 29% higher among women who approved food-based domestic violence (OR: 1.29, CI 1.15–1.57) than those who did not. In urban areas, food-based domestic violence was not significantly associated with anemia. This study emphasizes the urgent need for culturally sensitive maternal health interventions aimed at re-orienting individuals and families on violence in rural areas.
Perturbation theory in the complete degenerate active space (CDAS-PT2)
Authors: Glebov Ilya O. , Poddubnyy Vladimir V. , Khokhlov Daniil
Published: July 2024

Methods based on the multireference perturbation theory (MRPT) with the one-electron zeroth-order Hamiltonian are widely used for the description of excited states, for example, due to their relatively low computational cost. However, current methods have a common drawback—use of a model space with low size. In this article, we propose the MRPT method with the model space extended to the complete active space. The one-electron zeroth-order Hamiltonian suitable for this extension is formulated. The proposed method was applied to common models, such as LiF, ethylene, and trans-butadiene. It was shown to have accuracy superior to XMCQDPT2 in most cases, especially in the case of the small active space.
Selective adsorption of high ionization potential value organic pollutants in wastewater
Authors: Liang Lihong , Cao Jiazhen , Zhang Yayun , Liu Xinyue , Li Jun , Yang Bo , Lv Weiyang , Yang Qiang , Xing Mingyang
Published: July 2024

It is imperative to devise effective removal strategies for high ionization potential (IP) organic pollutants in wastewater as their reduced electron-donating capacity challenges the efficiency of advanced oxidation systems in degradation. Against this backdrop, leveraging the metal-based carbon material structure meticulously, we employed metal-pyridine-N (M-N-C, M=Fe, Co, and Ni) as the electron transfer bridge. This distinctive design facilitated the ordered transfer of electrons from the adsorbent surface to the surface of high IP value pollutants, acting as a “supplement” to compensate for their deficient electron-donating capability, thereby culminating in the selective adsorption of these pollutants. Furthermore, this adsorbent also demonstrated effective removal of trace emerging contaminants (2 mg/L), displayed robust resistance to various salts, exhibited reusability, and maintained stability. These findings carry substantial implications for future carbon-based material design, offering a pathway toward exceptional adsorption performance in treating water pollution.
Same-sex marriage, gay marriage, or equal marriage?
Authors: Paterson Laura L. , McGlashan Mark
Published: July 2024

Changes to marriage legislation across the globe have received
much academic and public attention. However, the labels used to categorise
different marital configurations are somewhat under researched. In this paper we
analyse the premodification of marriage in a corpus of UK
newspaper articles (2000–2018) to establish which labels are most commonly used
in reference to same-sex marriage. These are gay marriage, same-sex
marriage, homosexual marriage, and equal marriage.
Drawing on the notion of category construction, we emphasise the fact that these
labels are not neutral synonyms, as each encodes a particular understanding
of same-sex marriage. Some labels even linguistically exclude certain groups,
such as those who are bisexual or transgender. We use the tools of corpus-based
discourse analysis to consider the nuanced differences between the category
labels and consider whether the limitations of the labels are ever directly
challenged.