Development of probiotic feed based on homogenised potato pulp

This paper presents a study aimed at developing a probiotic feed preparation based on a secondary product of the food industry - homogenised potato mass (HPM). The possibility of using HPC as a substrate for cultivation of probiotic bacteria Bacillus subtilis and Lactobacillus plantarum was studied. It was experimentally shown that GCM provides effective growth and multiplication of these bacteria, and lyophilisation allows to preserve their viability for a long time. The obtained preparation demonstrated pronounced antibiotic activity against a number of pathogenic microorganisms. This allows us to conclude that HCM is a promising raw material for the production of cost-effective and efficient probiotic preparations, which contributes to the development of sustainable animal husbandry and reduces dependence on antibiotics. The results confirm the possibility of efficient utilisation of secondary raw materials for the production of probiotics and indicate the importance of further research in this area

Fidelity and criticality in the nonreciprocal Aubry-André-Harper model

We study the critical behaviors of the ground and first-excited states in the one-dimensional nonreciprocal Aubry-André-Harper (AAH) model using both the self-normal and biorthogonal fidelity susceptibilities. We demonstrate that fidelity susceptibility serves as a probe for the phase transition in the nonreciprocal AAH model. For ground states, characterized by real eigenenergies across the entire regime, both fidelity susceptibilities near the critical points scale as N2, akin to the Hermitian AAH model. However, for the first-excited states, the fidelity susceptibilities exhibit distinct scaling laws, contingent upon whether the lattice consists of even or odd sites. For even lattices, both the self-normal and biorthogonal fidelity susceptibilities near the critical points continue to scale as N2. In contrast, for odd lattices, the biorthogonal fidelity susceptibilities diverge, while the self-normal fidelity susceptibilities exhibit linear behavior, indicating a novel scaling law

Precision marketing method and strategy of e-commerce platform based on clustering algorithm

In the ever-changing community e-commerce, it is crucial to comprehend the complex connection between quality of a community e-commerce platform and the behavior of consumers in order to maintain growth and competitiveness. This study empirically examines the influence of community e-commerce platforms’ quality, including system quality, information quality, and service quality, on consumers' intention to repurchase, with a specific focus on daily necessities. Stimulus-Organism-Response (SOR) paradigm is adopted to examine how the perception of hedonic and utilitarian values influence the connection between platform quality and repurchase intentions. The results of an online survey conducted with 181 users of community e-commerce platforms demonstrate significant impact of system quality and service quality on repurchase intention. This study particularly emphasizes the key role of the clustering algorithm in precision marketing. Clustering algorithm helps to organize and collect user behavior models and related information, and segment consumer groups, thus laying a solid foundation for precision marketing. During the process of users segmentation, it explores the similarities and differences of different groups, combines market and product development strategies, and targets the selection and integrattion of user markets. This improves the accuracy of market strategies, ensures the full implementation of consumer-ccentric service concept, fully meets the needs of different consumer groups, tracks the status of target customers in real-time, and carries out marketing work.This enhancement is predominantly mediated by perceived hedonic and utilitarian values, highlighting their crucial importance in the process of consumer decision-making. The study also reveals that the impact of information quality on repurchase intentions is limited, and its indirect effect through perceived utilitarian value is also minimal. This sheds light on the complex relationship between platform quality and consumer perceptions. This study enriches the existing literature by providing a detailed understanding of the factors that influence customer loyalty in the digital market. It also provides strategic advice to community ecommerce platforms that seek to increase consumer engagement and enhance their competitive position by implementing qualitative improvements in systems, services, and information distribution

Nanotechnology-Driven Water Purification Systems for Sustainable Irrigation in Arid Regions

Since nanotechnology has emerged as one of the most developed technologies in terms of water purification in arid regions and owing to the increasing demand of sustainable irrigation solutions, it has become increasingly important. In this study, the development and optimization of nanotechnology driven water purification systems with operation in arid environments is studied. The focus of this research is the development of nanomaterials-based enhancement of Thin-Film Composite (TFC) membranes in order to obtain superior filtration efficiency, augment flux rates and reduce fouling. Furthermore, Membrane Bioreactor (MBR) systems are integrated into the system to enhance overall water quality by combining biological treatment with advanced filtration, leading to cost reduction of operations. Total Organic Carbon (TOC) sensors give real time monitoring and provide crucial data for the management of water quality and to ensure good performance of the system. Support Vector Regression (SVR) and Principal Component Analysis (PCA) increase the accuracy of predictive capabilities and optimizes the operations. These technologies are integrated and represent a major step in achieving water scarcity challenges for irrigation in water stressed areas with integrated approach. It was shown that the optimized TFC membranes achieved a flux rate of 25.5 L/m2•h, a specific permeability of 19.2 L/m2 bar•h and decrease in membrane fouling rate to 0.011 mg/cm2h. A transmembrane pressure drop of 0.24 bar was found to be the average. Although SVR and PCA have been used to analyze system data, after applying data analysis with SVR and PCA, system efficiency is improved by 18%, and the performance predictions made are accurate enough for system management and operational adjustment. Techniques used in Typical IFH MBR studies and terms: Thin Film Composite (TFC), Membrane Bioreactor (MBR) systems, Total Organic Carbon (TOC), Support Vector Regression (SVR) and Principal Component Analysis (PCA)

Studying the Potential of Biochar as a Soil Amendment to Improve Crop Productivity

In modern agriculture, enhancing soil health and crop productivity is essential to meet rising food demands. Various soil amendments, such as manure, chemical fertilizers, compost, and lime, are traditionally used to improve soil properties and boost crop yields. However, the effectiveness and sustainability of these amendments vary, highlighting the need for a comprehensive assessment to identify the most effective solution. This study investigates the potential of biochar as a soil amendment, comparing it with manure, chemical fertilizers, compost, and lime. The research aims to identify a soil treatment that not only improves crop yields but also enhances soil health and promotes long-term sustainability. The methodology involves a comparative analysis of these amendments, evaluating their impact on crop productivity, soil pH levels, water retention capacity, and nutrient content. Data was collected from experimental plots treated with each amendment. The results indicate that biochar significantly outperforms the other treatments across all measured parameters. Plots treated with biochar exhibited higher crop yields, improved soil pH balance, enhanced water retention, and increased nutrient content. These findings suggest that biochar is a superior soil amendment, offering both immediate and long-term benefits for soil health and agricultural productivity .In conclusion, the study demonstrates that biochar is the most effective soil amendment among those tested, making it a promising solution for sustainable farming. The results provide a strong foundation for further research and practical applications of biochar in diverse agricultural settings

Novel UHF RFID tag structure based on polycarbonate material, for renewable energy applications

In the renewable energy sector, the management of protective equipment (PPE and collective safety systems) is a crucial priority to reduce workplace risks and ensure the safety of operations. This article presents the design and optimization of a novel UHF RFID tag operating at 868 MHz, featuring an original structure inspired by a wind turbine shape. This tag is specifically designed to be integrated into industrial safety helmets made of polycarbonate, a material characterized by a dielectric constant εr = 2.9 and a loss tangent tanδ = 0.01. The tag aims to enhance equipment tracking and traceability. The antenna is adapted to an Alien H4 UHF RFID chip, which has an internal impedance of Z = 23.37 - j203.3 Ω at the chosen frequency, ensuring optimal power transfer. Simulation results demonstrate that the tag offers high readability and efficiency while respecting the mechanical and dielectric properties of polycarbonate. This study highlights the potential of innovative UHF RFID tag designs for tracking safety equipment in industrial environments, offering a robust solution to improve workplace safety and operational efficiency

Study and analysis of corrosion in sewage collectors

The article discusses the sewage systems of the city of Kattakurgan, which have such shortcomings as the complete absence of wastewater treatment, while the discharge of untreated wastewater increases sanitary and environmental risks for surrounding areas, leading to air pollution and groundwater contamination. The lack of quality control of wastewater discharged from industrial enterprises into urban networks leads to blockages and, in some cases, the destruction of gravity collectors. It also examines the types of destruction of the concrete surface of sewage pipelines and ways to eliminate them. To increase the durability of the reinforced concrete lining, a wide range of technologies, materials (various mastics, paints, facing, lining materials, etc.) and methods can be applied. Gas dilution in collectors can be achieved through natural ventilation or by creating forced ventilation using fans or gradients

Differences in attachment of oysters on different plastic farming gear

Plastic has become an indispensable material in modern industry and daily life due to its excellent physical and chemical properties, such as corrosion resistance, lightweight, durability, and low cost. Plastic farming gear is widely used in aquaculture. Oysters will adhere to farming gear. In this study, plastic farming gear with oyster attachment was collected in Shandong coastal area: black floating ball, colored transparent floating ball and foam floating ball. Compare the number and tightness of oyster attachment on three types of farming gear, and analyze the reasons for the differences in attachment from three aspects: surface roughness, polymer type, and aquaculture scenarios. The results showed that the black floats had the largest number of oysters attached to them and the longest oyster shells. This may be because the black float had a rough surface and a hard texture, and was mainly used in oyster farming areas. However, colored transparent floating balls and foam floating balls were light, easy to float with the waves, and could not provide stable attachment conditions for oysters. This study provides useful information on the interaction between plastic farming gear and bivalves

State and development of farms in Uzbekistan as a basis for food security

The work is devoted to the study of directions of effective development and functioning of farms in the conditions of modern economy, with emphasis on the role of innovations in this process. The study was carried out on the basis of analysing the experience of farming activity of agro-enterprises of the Republic of Uzbekistan. Also the analysis of normative-legal acts and statistical data in the field of agro-industrial complex of the Republic of Uzbekistan with the use of methods of comparative and logical analysis was carried out. Introduction of innovative technologies is a key condition for sustainable development of farms, increasing their productivity and competitiveness. Factors hindering the introduction of innovations are analysed and ways of their solution are proposed. Special attention is paid to the experience of Uzbekistan, where the agricultural sector plays an important role in the economy. In particular, examples of introduction of drip irrigation, precision farming, modern technologies in livestock breeding and greenhouse farms are considered. The results of the study highlight the importance of creating a favourable innovation environment, as well as strengthening state support and incentives for scientific research

Mirages en natation

La natation est un sport de course au même titre que la course à pied, l’aviron ou encore le cyclisme. L’objectif peut paraitre simple : couvrir une distance donnée le plus rapidement possible. Cependant, elle se distingue par ses phases de départs et de virages. En effet, dans les courses avec départ arrêté, les coureurs, rameurs, cyclistes accélèrent pour atteindre une vitesse maximale et luttent ensuite pour s’y maintenir, malgré la fatigue. En natation, dans les disciplines de crawl, de papillon et de brasse, les nageurs s’élancent d’un plot et plongent dans l’eau à une vitesse près de trois fois supérieure à leur vitesse de nage. Plus quantitativement, un nageur atteint typiquement 5 m/s à la sortie du plot, entre dans l’eau à 6 m/s, mais ne nage « qu’à » 2,2-2,3 m/s pour les meilleurs ! Au virage, il pousse au mur et peut atteindre près de 3,5 m/s. Il faut profiter le plus longtemps possible de ces fortes vitesses. Pour ça, les nageurs ont le droit de parcourir jusqu’à 15 mètres sous l’eau. Pourquoi nager sous l’eau et rallonger le chemin à parcourir ? À l’aide de caméras et d’intelligence artificielle, nous étudions ces phases clefs et caractérisons la trajectoire des nageurs. Un modèle physique, prenant en compte les résistances à l’avancement, ainsi que les différents modes de propulsion (ondulation et nage) est proposé