Texas Journal of Engineering and Technology
Texas Journal of Engineering and Technology provides the opportunity to the authors to publish their original research articles in field of Engineering and Technological Advancements. Frequency of Publication: Monthly Acceptance Notification: 45 Days ISSN (Online): 2770-4491 doi Prefix: 10.62480
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Environmental Risk Management Based On Management System Requirements
This article presents scientific and practical recommendations for identifying aspects, assessing their significance levels, and reducing negative impacts by creating an environmental risk management organization standard in the production processes of plastic and rubber components for the automotive industry. During the study, an environmental profile for plastic, rubber, and dyeing workshops was formed based on the requirements of the international ISO 14001 standard
Khamrakulova Zarnigorkhon Farkhodjon kizi
Copyright (c) 2026 https://creativecommons.org/licenses/by-nc/4.0
Types of anti-detonation devices and the mechanism of their effect on automobile gasoline
Today, a cycle with external mixture formation (gas-diesel cycle) has been developed in which diesel engines are combined with natural gas. Almost all gasoline engines have switched to direct injection into the engine's combustion chamber. Gasoline engines today use not only gasoline, but also natural compressed or compressed petroleum gases, alcohols and alcohol-gasoline mixtures
Development of Fuel Consumption Correction Factors for GTL Synthetic Diesel Fuel in Diesel Vehicles under Field Operating Conditions
This paper proposes a compact operational method for adapting fuel-consumption norms when gas-to-liquid (GTL) synthetic diesel fuel is used in existing diesel vehicles. Field tests were conducted on an ISUZU NQR71PL vehicle operated on petroleum diesel and GTL fuel under comparable conditions. The test indicators included maximum speed, acceleration time to 60 km/h, and fuel consumption at 40-90 km/h. The maximum speed remained practically unchanged (104.17 and 105.50 km/h), while acceleration time increased from 15.91 to 16.86 s. GTL volumetric consumption exceeded diesel consumption by 4.56-6.10%, mainly because of the lower density and lower energy content per litre of GTL fuel. Speed-dependent correction factors of 1.046-1.061 were obtained, and an average value of 1.055 is recommended for preliminary fleet accounting. The results confirm that GTL fuel can be used without major vehicle modification, but separate consumption norms are required
Hybrid Attention-Based Deep Learning for Threat Traffic Recognition in IoT Networks Using the ToN_IoT Dataset
Internet of Things networks generate high-volume, temporally structured traffic whose attack signatures span both within-flow feature patterns and cross-flow temporal dynamics. Single-paradigm classifiers cannot fully exploit this dual structure. This paper proposes HACIDS (Hybrid Attention-based CNN Intrusion Detection System), combining two-stage convolutional feature extraction, Bidirectional LSTM temporal modelling, and Multi-Head Self-Attention (MHA) for eleven-class IoT threat detection on the ToN_IoT dataset. HACIDS achieves 94.78% accuracy and macro F1 of 0.924, modest but consistent improvements over all evaluated baselines, with the most meaningful gains on rare attack categories. Results are from a single held-out split; standard deviation across repeated runs is not reported, which is acknowledged as a limitation. Performance may be partially optimistic due to sliding window overlap; traintest separation was performed before window construction. An ablation study confirms each component contributes incrementally; attention weight analysis provides indicative feature associations per attack class.
Privacy-Preserving Collaborative Defence: Federated Learning for Intrusion Detection on the ToN_IoT Dataset
The rapid proliferation of Internet of Things (IoT) devices across smart homes, industrial automation, and healthcare networks has expanded the cyber-attack surface while generating distributed, privacy-sensitive network telemetry that centralised intrusion detection systems cannot collect without creating regulatory and operational risks. Centralised IDS architectures are less suitable for the distributed, heterogeneous IoT deployment reality and may conflict with data sovereignty frameworks such as the General Data Protection Regulation (GDPR). This paper proposes and evaluates a Privacy-Preserving Collaborative Intrusion Detection System (PP-CIDS) using Federated Learning (FL) on the ToN_IoT benchmark. A lightweight multi-layer perceptron (MLP) is trained through FedAvg aggregation across ten simulated edge clients and compared against centrally-trained Random Forest (RF) and DNN reference baselines. Asynchronous FL with FedProx regularisation is evaluated against synchronous FL for convergence efficiency and communication overhead. The impact of Non-IID data heterogeneity is quantified using Dirichlet concentration parameter α ∈ {0.5, 0.1}. All results are reported as mean ± standard deviation across five independent runs. Under IID conditions the federated MLP achieves 89.12% ± 0.63% accuracy, within 3.1 pp of the centralised DNN reference (92.2%), without transmitting raw traffic data. Asynchronous FL with FedProx under severe Non-IID heterogeneity (α = 0.1) achieves 84.21% ± 0.84%, demonstrating that privacy-enhancing federated IoT IDS is viable even under significant data heterogeneity, while acknowledging that FL alone does not guarantee full regulatory compliance
Correlation and regression model of medical clinic quality indicators through ISO 9001:2015 and ISO 7101:2023 standards
In this article, quality indicators were studied based on international standards ISO 9001:2015 and ISO 7101:2023, and an empirical-statistical analysis was conducted based on the identified quality indicators. The identified model was tested for adequacy based on Student’s and Fisher’s criteria. The identified regression equation was confirmed by statistical analysis (Fisher F-criterion p < 0.001) and high determination coefficients (R2 > 0.94). The models were constructed based on Student’s t-test, and the statistical significance of all regression coefficients was determined. The results of the empirical-statistical analysis show that the application of the requirements of the ISO 9001:2015 and ISO 7101:2023 standards have a direct impact on the determining changes in the quality of medical laboratory services. The identified quality indicators and mathematical models can be applied in other medical laboratories.
indicator, standard, ISO 9001:2015, F-criterion, model.
Improving The Service Life of Road Concrete Under The Effect of Mineral and Chemical Additives
In the Republic of Uzbekistan, the construction of modern toll roads and highways represents a key infrastructure component that ensures the efficient functioning of transport networks globally. While asphalt and concrete materials traditionally used in road construction have proven somewhat effective, they face challenges related to long-term strength, durability, and environmental impact. This study analyzes composite materials that are fundamentally transforming road and highway construction practices and highlights their potential to overcome existing issues. It evaluates the operational efficiency of complex modified materials in road construction, emphasizing how mineral and chemical additives enhance concrete and pavement strength, resistance to deformation, cold, and aggressive environments. The findings indicate that employing these materials can extend infrastructure service life, reduce maintenance costs, and support environmental sustainability.
Seismic Strength Assessment of An Oil Product Storage Tank Under Full Product Filling Conditions
This study presents technical solutions aimed at reducing the seismic vulnerability of existing storage tanks. Scientific and engineering proposals are developed to enhance the seismic resistance of the tank, and structural strengthening measures are formulated based on numerical analyses performed using the LIRA-SOFT 10.12 software package. Based on the obtained results, effective engineering solutions are proposed to mitigate seismic impacts and improve the overall structural safety and reliability of the tank.(This article was prepared within the framework of the project of the Ministry of Higher Education, Science and Innovation of the Republic of Uzbekistan on the topic of determining the level of seismic resistance of reservoirs in the oil and oil and gas industry and developing measures to reduce seismic risk, scheduled for implementation in 2024-2025)
Assessment Of The Safety Of Ultrasonic Equipment Using The Fmea Method
In this article, we conducted research on the safety of ultrasound equipment using the FMEA method. The work performed in this study was carried out in accordance with the requirements of the international standard “IEC 60601-2-37:2024 Particular requirements for the basic safety and essential performance of ultrasound medical diagnostic and monitoring equipment” and “ISO 14971:2019 (E) Medical devices - Application of risk management for medical devices”. The study was conducted at the “YYY” diagnostic center in Andijan. The study is based on the results obtained from 150 patients over a three-month observation period. During the study, the initial average RPN level was 175.8, and due to corrective measures, it was reduced by 44.7, or 74%. The work in the study is part of the results of my scientific research on the topic “Improvement of the quality assurance system for ultrasound examinations in medicine based on international standard requirements”
The Pedagogical Significance of the Ideas of Labor Education and Career Choice in the Heritage of Eastern Scholars
This article analyzes the pedagogical significance of ideas related to labor education and career choice in the spiritual heritage of Eastern scholars. The study examines the views of Abu Nasr Forobiy, Abu Rayhon Beruniy, Abu Ali ibn Sino, and Alisher Navoiy, highlighting their perspectives on labor, professional skills, and personal development. The article reveals the role of labor as a means of achieving personal maturity, its importance in social development, and its close connection with moral education. It also substantiates that labor education contributes to the formation of essential personal qualities in students, such as responsibility, discipline, patience, and independence. The research findings indicate that the ideas of Eastern thinkers serve as an important methodological basis for guiding students toward professional orientation. It is emphasized that the integration of these ideas into the educational process can enhance students’ conscious career choice, as well as develop their diligence and independent thinking skills
Bibliometric Analysis Of Overall Equipment Effectiveness (OEE)
Overall equipment effectiveness (OEE) is a key performance indicator used to measure equipment productivity(Overall equipment effectiveness 2008). The purpose of this study is to review and analyze the scientific papers written on OEE(Tang Ho Hwa, Yeo Chiew Tiam, and Ding See Kong 2020). 1377 documents were obtained in the general search; after eliminating duplicates and applying certain inclusion and exclusion criteria, 1308 papers were used for this review. This study provides three main conclusions: During the period 2000-2022, academic interest in this topic has increased and the keywords are maintenance and production, related to the six major losses, lean manufacturing and optimization; a list of authors who have conducted scientific work on the basis of OEE is compiled; and the top 10 countries that conducted scientific work based on OEE are presented based on geographical analysis. VOS viewer software was used to investigate the bibliometric research method and bibliographic display maps(Vinodh 2022; Wudhikarn 2012; Yeo, Chang, and Liu 2021). There are three phases to the bibliometric research process, they are search criteria and source identification, software and data extraction, and then data analysis and interpretation. To our knowledge, several bibliometric comparative reviews on OEE and maintenance have been published. This study serves as a continuation of the above related studies.
Advantages And Disadvantages Of Using Virtual Laboratory Work In Physics
In this paper we have considered the problem of implementation of virtual physics labs in higher education institutions, as well as their advantages and disadvantages compared to traditional laboratory practical’s. The importance of supplementing real experiments with virtual ones is highlighted. It is shown that the virtual laboratory is one of the innovations having a significant impact on the modern education system. The virtual laboratory provides practical training with all the existing limitations, such as the tools and materials of practical equipment at universities
Stability Conditions In Black Hole Problems
This paper presents a systematic theoretical review of stability conditions in black hole spacetimes. Four interconnected aspects are examined: linear perturbation theory and its effective potential structures, quasinormal mode analysis including spectral instability, nonlinear stability and its rigorous mathematical proofs, and thermodynamic stability covering heat capacity and phase transitions in anti-de Sitter spacetime. The observational connection to gravitational-wave ringdown signals is discussed as empirical validation of the perturbative stability framework. Key open problems are identified alongside prospects offered by next-generation gravitational-wave detectors.
The influence of rare earth elements on the optical properties of silicon epitaxial films
The results of growing erbium-doped silicon epitaxial layers using two different growth modes are presented: conventional molecular beam epitaxy (MBE) and solid-phase epitaxy (SPE). It is shown that an erbium-doped silicon layer deposited by PFE on a cold substrate and subsequently annealed exhibits more intense photoluminescence at a wavelength of 1.54 µm than layers grown by MBE
Criteria for Food Product Quality and Safety, Analysis of Factors Affecting the Effectiveness of a Food Safety Management System (FSMS)
ISO 22000:2018 specifies requirements for a Food Safety Management System (FSMS) for organizations in the food chain and integrates Codex and HACCP principles. This paper aims to systematize quality and safety criteria for food products using clear indicators and limit values, assess drivers that influence FSMS performance, and propose a composite FSMS Performance Index (FSMS-PI) based on key performance indicators (KPIs). The methodology was built on the Codex CXC 1-1969 (Rev. 2020) GHP/HACCP approach, ISO/TS 22002-1:2009 prerequisite programme (PRP) requirements, and limit values from relevant product standards. As illustrative objects, a criteria registry was developed for wheat flour and refined vegetable oil. For wheat flour, moisture content ≤15.5% (m/m) was selected as a core quality indicator. For refined vegetable oils, acid value ≤0.6 mg KOH/g, peroxide value (PV) ≤10 meq O₂/kg, and limits for Cu ≤0.1 mg/kg and Fe ≤1.5 mg/kg were set as baseline indicators
Classification of Micro Hydropower Plants by Output Voltage Stabilization Methods
Micro hydropower plants play a significant role in decentralized power generation, especially in remote and rural areas. One of the main technical challenges in micro hydropower systems is maintaining stable output voltage under varying load and water flow conditions. This paper presents a systematic classification of micro hydropower plants based on methods used for output voltage stabilization. The advantages, limitations, and application areas of each stabilization approach are analyzed. The proposed classification provides a useful framework for selecting appropriate voltage control strategies in the design and operation of micro hydropower systems
Development of the Structure and Operating Algorithm of a Micro Hydropower Plant with a Battery-Based Ballast Load
Micro hydropower plants (micro-HPPs) play a significant role in providing reliable and sustainable electricity to remote and rural areas. However, one of the main challenges in micro-HPP operation is maintaining stable voltage and frequency under variable load conditions. Traditional ballast load controllers dissipate excess energy as heat, leading to efficiency losses. This paper proposes an improved structural configuration and operating algorithm for a micro hydropower plant with a batterybased ballast load. The proposed system combines an electronic load controller with a battery energy storage system to absorb surplus power, enhance energy utilization, and stabilize operating parameters. The developed control algorithm ensures frequency regulation, optimal battery charging and discharging, and reliable operation of the asynchronous generator. Simulation-based analysis demonstrates that the proposed approach significantly improves overall system efficiency, power quality, and operational flexibility
Treatment Of Maize Seeds Using An Ultraviolet Irradiation Device
The article presents the results of studies on the technological parameters of an electrotechnological device used for pre-sowing ultraviolet treatment of maize seeds, as well as the optimal processing parameters for electrical stimulation and their relationship with crop yield indicators.
Development Of Technological Schemes For Transporting Rock Mass And Management Of The Working Area Of A Deep Quarry
The operating conditions of modern industrial vehicles are determined by the increasing depth of mining operations. This trend results in the predominant use of vehicles (over 60%) as assembly units, concentrating vehicle traffic in the working area of deep quarries with their limited space of the Muruntau deep quarry is characterized by a high concentration of traffic, heterogeneity of the transported rock mass, and instability of key parameters. During a shift, 10-15 working faces and 5-10 transfer points are in operation, forming over 100 routes with an average length of 3.73 km
Copyright (c) 2025 Ravshanova M. H. https://creativecommons.org/licenses/by-nc/4.0
The operating conditions of modern industrial vehicles are determined by the increasing depth of mining operations. This trend results in the predominant use of vehicles (over 60%) as assembly units, concentrating vehicle traffic in the working area of deep quarries with their limited space of the Muruntau deep quarry is characterized by a high concentration of traffic, heterogeneity of the transported rock mass, and instability of key parameters. During a shift, 10-15 working faces and 5-10 transfer points are in operation, forming over 100 routes with an average length of 3.73 km. The maximum freight traffic intensity on individual routes reaches over 35,000 m³ of rock mass per shift. The share of face roads along the traffic routes is 15-30%. Up to 80% of the roads have a service life of up to one year. The complexity of operating conditions is exacerbated by the high concentration of mining equipment and minimal excavation space.
Silk Kurt To The Process Of Seed Revival Effect Of Electrotechnological Method
In this article Data on the study of the effect of artificial air ionization on the process of reviving mulberry silkworm eggs in the spring of 2025. The results of scientific and practical research on determining the optimal air ion concentration are also presented.
Optimization Of The Duration And Power Parameters Of Ultraviolet Radiation Treatment Of Sunflower Seeds
This study investigated the optimal parameters of ultraviolet (UV) radiation treatment on sunflower (Helianthus annuus L.) seeds. Experiments were conducted on two varieties, Dilbar and Jahongir, to evaluate the effects of radiation intensity (30–90 W), distance (5–15 cm), and exposure time (10–20 minutes) on seed germination as well as seedling root and shoot length using a multi-factor experimental design. Second-order regression equations were developed, and corresponding 3D graphs were constructed. The results identified the optimal conditions for maximum efficiency: total lamp power of 60 W, distance of 10 cm, and exposure time of 15 minutes. The statistical adequacy of the models was confirmed using the Cochran, Student’s t, and Fisher criteria.
Concrete And Reinforced Concrete Technology
This article examines modern technologies for the production, preparation, and quality control of concrete and reinforced concrete. The features of raw materials, technological stages of production of concrete mixtures, reinforcement, molding, and hardening of reinforced concrete structures are presented. Innovative methods for increasing the strength, durability, and crack resistance of structures through the use of chemical additives, modifying fillers, and composite reinforcement are analyzed.
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A new technology for cleaning primary silk fibers from plant impurities in the preparation of raw materials for liquid paper
In the development of the rational technology of purification of prevodchik Uzbek-English ternary Los, it is necessary first of all to take into account the properties of interaction of foreign particles with fibers. The main mass of foreign mixtures of fibrous mass in the primary Los corresponds to fragments of branches or stems on the stalk and dry particles of mulberry tree. With silk fibers, the ilakish strength of the stem branches fluctuates between 1.56 and 2.76 sN teks intervals and mainly depends on the material of the STEM and the hem-budurdig of the surface. The friction coefficient on the surface of plant particles of silk thread is much higher than on the metal surface (except for the straw handle), and the roughness of these Horn surfaces will be higher
Fire-Resistant Building Materials And Their Safety Standards
This article examines in detail the types of fire-resistant building materials, their physical and chemical properties, their behavior at high temperatures, as well as international and national fire safety standards. The role of concrete, brick, mineral and basalt wool, fire-retardant coatings, intumescent paints, and flame retardants in ensuring the fire resistance of buildings is analyzed. Particular attention is paid to the use of fire-resistant materials in Uzbekistan and their development prospects
Methodology and Results of Studying the Electrophysical Properties of Plants
This article discusses methods for studying the electrophysical properties of plants, the importance of bioelectric parameters in determining their physiological state, and experimental results. As a result of the research, it was proven that changes in the capacitance and resistance of plant cell membranes are an important indicator in determining their response to external factors.
Study of the Influence of Electro-Impulse Technology Parameters on Microorganisms in Wastewater
This paper examines the physical processes accompanying the occurrence of an electric discharge in an aqueous medium, which is a key element of electrohydraulic technologies. Special attention is given to the mechanisms of discharge initiation, the influence of medium parameters (pressure and conductivity), and the characteristics of high-voltage pulses. The study aims to determine the optimal conditions for effective discharge formation and the generation of shock waves used in technological processes of material destruction, treatment, and purification. Experimental data are presented, and the prospects for applying the obtained results in engineering practice are discussed
Environmental Concerns In Oil Waste Processing
This paper analyzes the impact of oil and petroleum products on the ecosystem, addresses issues of soil pollution by petroleum products, and examines emergency situations involving the release or threat of release of hazardous chemical substances (HCS) due to explosions that cause the destruction of process networks and engineering structures. Furthermore, it presents challenges aimed at minimizing negative consequences and the rational use of natural resources in modern conditions
Analysis Of The Possibility Of Increasing The Efficiency Of The Ozone Electrosynthesis Process
The article provides information about the existing methods of ozone electrosynthesis and identifies their drawbacks. Based on the analysis of processes in the power supply circuit of ozone generators with sinusoidal and pulse voltage of high duty cycle, the possibility of reducing losses and increasing efficiency, increasing the yield of ozone, is substantiated. The distribution of the electric field intensity over the elements of a cylindrical ozone generator was analyzed when it was powered by a sinusoidal and periodic pulse voltage with a duty cycle of more than 5. It was found that it is possible to generate ozone without pre-cooling and drying the air, or cooling the dielectric barrier with running water