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348 articles for “COA”
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Exploratory Analysis of the Statistical Characteristics of Nuclear Fuel Cost Trends
Abstract: Nuclear power reactors of the current fleet mainly use uranium as the fissile fuel material. The economics of nuclear fuels are mainly governed by the prices of uranium. This work is an analysis of monthly uranium price data available from public data sources, covering the time frame from January 1990 to April 2025. In the near term, from 2021 to 2024, monthly uranium spot prices have been between $ 35.28±6.64/lb …
Published in Research & Reviews : Journal of Statistics · Vol. 14, Issue 3, 2025 · pp. 39–49 Read article
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Evaluation of Compressive Strength of Concrete Using Fly Ash, Silica Fume, and Steel Slag as Cementitious and Aggregate Replacements
Abstract: This study comprehensively investigates the influence of supplementary cementitious materials and industrial by-products—specifically fly ash, silica fume, and steel slag—on the compressive strength of concrete. The primary objective is to evaluate the impact of both individual and combined replacements of cement and aggregate components on concrete performance. The research analyzes how varying proportions of these materials affect the strength characteristics of the concrete mixtures. Experimental results demonstrate that increasing the …
Published in Journal of Construction Engineering, Technology & Management · Vol. 15, Issue 3, 2025 · pp. 1–6 Read article
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Embracing Health, Safety, and a Greener Environment in the Construction of Offshore Structures
Abstract: Offshore infrastructure (oil and gas platforms, offshore wind farms, subsea cables, ports, and associated works) plays a vital role in energy, communications, and trade. However, construction activities offshore create complex safety, public health and environmental risks from worker injuries and exposure to hazardous substances, to marine pollution and ecosystem damage with downstream human health effects. This paper reviews the hazards, regulatory and management frameworks, lessons from major incidents, and practical …
Published in Journal of Offshore Structure and Technology · Vol. 12, Issue 3, 2025 · pp. 30–41 Read article
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Biodegradable and Natural Fiber-Reinforced Polymer Composites for Sustainable Biomedical Applications
Abstract: Liposomal drug delivery has evolved into a viable approach in modern pharmacology thanks to its enhanced bioavailability, reduced systemic toxicity, and targeted drug release. Conventional liposomes have limited stability, medicine leakage, and short circulation times among other problems. Overcoming these limits, the inclusion of nano-polymers into liposomal formulations has transformed medication delivery. Thorough research has been done on the potential of nano-polymers including chitosan, hyaluronic acid, polyethylene glycol (PEG), and …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 420–432 Read article
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Polyurethane: Chemistry, Production, Applications, and Future Prospects—An Overview
Abstract: Polyurethane (PU), a class of versatile polymers, has emerged as one of the most significant materials in modern industry owing to its remarkable mechanical strength, elasticity, durability, and resistance to abrasion, chemicals, and environmental degradation. Its wide range of tunable properties has made PU indispensable across multiple sectors, including fashion, automotive, manufacturing, biomedical, coatings, and construction. This review emphasizes the diverse applications of polyurethane and explores how its unique chemistry …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 12, Issue 3, 2025 · pp. 17–25 Read article
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Phase – Field Modeling of Brittle and Ductile Fracture Under Complex Loading Conditions
Abstract: Phase-field modeling has emerged as a powerful computational framework for predicting fracture behavior in engineering materials, offering a unified description of crack initiation, propagation, branching, and coalescence without the need for explicit crack tracking. This study presents an in-depth examination of phase-field modeling applied to both brittle and ductile fracture under complex loading conditions, including multiaxial stress states, cyclic loading, thermal gradients, and dynamic impact. The phase-field approach regularizes the …
Published in International Journal of Fracture Mechanics and Damage Science · Vol. 3, Issue 2, 2025 · pp. 13–18 Read article
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Modeling of MHD Hybrid Nanofluid Flow with Radiation and Chemical Reaction Effects for Advanced Composite and Energy Applications
Abstract: Hybrid nanofluids reinforced with polymer-based matrices and nanoparticles have emerged as promising working fluids for advanced composite processing and thermal management systems. Their superior thermo-physical properties enable efficient cooling and energy transport, making them suitable for applications in polymer extrusion, composite curing, thermal insulation coatings, solar energy devices, electronic packaging, and nuclear system cooling. In this study, we investigate the heat and mass transfer behavior of magnetohydrodynamic (MHD) hybrid nanofluid …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 648–660 Read article
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Sustainability and Mechanical Performance Evaluation of Cementitious Composites Reinforced with Waste Rubber Aggregates and Ground Granulated Blast Furnace Slag
Abstract: The development of environmentally responsible composite materials has gained global momentum with the shift toward circular and sustainable construction practices. In this work, the performance of cementitious composites that partially substitute natural fine and coarse aggregates with recycled rubber aggregates from end-of-life tires and Ground Granulated Blast Furnace Slag (GGBS) as an additional cementitious material is examined. A total of thirty composite mixes were formulated by varying GGBS (10–30%) and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1164–1180 Read article
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Characterization of Polyurethane at Multiple Scales for Erosion Mechanisms Under Sand Particle Impact
Abstract: Thin polyurethane layers have been widely used as erosion-resistant coatings on helicopter rotor blades such as UH-60 Black Hawk and Eurocopter SA 315. Published research has mainly focused on empirical studies that relate the mechanical properties such as rebound resilience and hardness of polyurethane to solid particle erosion resistance. However, polyurethane possesses phase mixing at multiple scales and thus sand particle erosion resistance depends also on the microstructure and the …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 13, Issue 1, 2026 · pp. 1–13 Read article
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Shadows of Uncertainty: When Pneumonia Isn’t Pneumonia
Abstract: Pneumonia is a common medical condition encountered in hospitalized patients and remains a cause of morbidity worldwide. Identifying and initiating appropriate treatment in febrile patients who present with respiratory symptoms and radiographic infiltrates, reduce hospital stay, minimize complications, and lower healthcare costs. However, the assumption that every pulmonary infiltrate or opacity seen on a radiological imaging represents an infectious process such as pneumonia can lead to misdiagnosis, unnecessary investigations, prolonged …
Published in International Journal of Pathogens · Vol. 3, Issue 1, 2026 · pp. 24–29 Read article
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“Review Article on Tridax Procurmbens Herbal Antibacterial Cream”
Abstract: Abstract Tridax procumbens (L.), also referred to as coat buttons or tridax daisy, is a common plant in the Asteraceae family that is well-known for its exceptional pharmacological and therapeutic properties. This plant has long been utilized as an anticoagulant, antifungal, insect repellent, wound healer, and hepatoprotective agent in Indian Ayurveda. With a focus on its medicinal and formulation features, the current study offers a thorough summary of its botanical …
Published in Recent Trends in Cosmetics · Vol. 3, Issue 1, 2026 · pp. 21–29 Read article
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Review and Analysis of Biodegradable Polymer Composites for Sustainable Hotel Packaging Applications
Abstract: Given the fast expansion in the hospitality and tourism industry, the decline in single use packaging materials has greatly amplified the quantity of plastic wastes, as well as the destruction of the environment. The present review is dedicated to the design and use of biodegradable polymer composites (BPCs) as the sustainable solution to the hotel packaging. The paper will be a synthesis of recent developments in the field of natural …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 348–365 Read article
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Optimizing Machinability in Wire EDM of AISI P20 Steel Employing Composite Material Wires with Hybrid Neural Network Approach
Abstract: AISI P20+Ni steel is extensively used for forging dies, plastic moulds, and automotive die components due to its excellent polishability, hardness, and homogeneity. This research utilizes Wire Electrical Discharge Machining (WEDM) to process pre-hardened AISI P20+Ni steel, focusing on minimizing both recast layer thickness (RLT) and kerf width (KW). The performance of wires made from composite materials, including zinc-coated brass wire (ZBW), cryogenically treated ZBW (CZBW), and ultrasonic vibration-assisted brass …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1120–1133 Read article
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Concurrent Acute Fatty LIVER of Pregnancy, Acute Hepatitis, And Viral Meningitis in An Advanced Maternal Age Pregnancy a Rare Triple Presentation
Abstract: Background: Acute fatty liver of pregnancy (AFLP) is a sometimes lethal, but very seldom, chronic hepatic disease during late pregnancy. The presence of AFLP with other severe diseases raises the level of diagnostic and therapeutic complexity to a higher level. Case Presentation: We present the case of a 45 years old multigravita and 26 weeks of gestation with a distinct triad of AFLP, acute viral hepatitis (cytomegalovirus [CMV] and herpes …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 15, Issue 1, 2026 · pp. 7–11 Read article
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Enhancing Border Security: Smart Surveillance System
Abstract: Advanced technology solutions are required to assure safety, prevent infiltration, and efficiently monitor activities in light of the growing risks to national security along international borders. The Enhancing Border Security System: Smart Surveillance System" project suggests a reliable, economical, and clever surveillance system designed for in-the-moment border monitoring. In order to provide a thorough security framework, this system combines contemporary sensors, motion detectors, infrared cameras, and wireless communication modules. Detecting …
Published in Journal of Microcontroller Engineering and Applications · Vol. 13, Issue 1, 2026 · pp. 11–19 Read article
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Design of Maritime Empennage Unmanned Aerial Vehicle (UAV): A Comprehensive Study
Abstract: This project presents a comprehensive study on the design and development of a maritime empennage unmanned aerial vehicle (UAV) tailored for operations in coastal and naval environments. The primary objective is to engineer an efficient, stable, and mission-adaptable UAV with an optimized empennage configuration that enhances aerodynamic performance and control in maritime conditions. The study involves a systematic design process encompassing mission requirement analysis, conceptual and preliminary design, aerodynamic modeling, …
Published in Journal of Aerospace Engineering & Technology · Vol. 16, Issue 1, 2026 Read article
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Fabrication of Polydimethylsiloxane Composites with Nickel Nanoparticles: Unification and Current–Voltage Relationship
Abstract: Polydimethylsiloxane (PDMS)–nickel nanoparticle (NiNPs) nanocomposite films were fabricated and systematically investigated to understand their electrical transport behavior through current–voltage (I–V) characterization. Nanocomposite films with varying Ni nanoparticle filler concentrations (14.88 wt%, 15.77 wt%, and 16.65 wt%) were prepared using a solution-mixing and spin-coating technique, followed by controlled thermal curing. The electrical properties of both pristine PDMS and PDMS– NiNPs nanocomposites were examined over a wide voltage range (up to 800 …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 16, Issue 1, 2026 · pp. 22–29 Read article
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Surfactant-Mediated Synthesis and Stabilization of Colloidal Nanoparticles in Aqueous Media: A Preliminary Study on Controlling Parameters
Abstract: Surfactants dissolved in water possess a distinctive tendency to accumulate at surfaces or interfaces, a process that involves the migration of surfactant molecules from the bulk liquid phase to the interfacial region. This adsorption tendency of surfactants is being exploited in stabilization of the Nanoparticles (NPs) synthesized through colloidal chemistry routes. In present research, preliminary studies on controlling parameters involving various surfactants has been carried out to standardized the chemical …
Published in Journal of Materials & Metallurgical Engineering · Vol. 16, Issue 1, 2026 · pp. 25–35 Read article
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Preparation and Characterization of Biopolymeric Film for Food Preservation and Packaging: A Review
Abstract: Petroleum-based polymers have been widely used for the production of various products for a long period due to their versatility and durability. However, the increasing demand of these petroleum-based plastic generates tremendous non-degradable plastic waste, leading to significant environmental concerns. Improper disposal practices lead to pollution, posing serious threats to the ecosystem and human health. In response to these challenges, biopolymers have emerged as a promising alternative source that have …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 17, Issue 1, 2026 · pp. 73–86 Read article
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Comparative Environmental and Economic Assessment of Wind Turbine Blade Materials
Abstract: Wind energy has proven to be one of the most stable and non-polluting renewable energy sources to mass power production. For energy production wind turbine is an essential part of the wind power plant. The choice of the blade material and coating applied on it has a strong impact on aerodynamic performance, mechanical strength, fatigue life, manufacturing possibility, and environmental effects throughout the operating life of the turbine. Hence, authors …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 91–99 Read article