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397 articles for “Stability”
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Assessing trends in Speciation of First-Row Transition Metals in Children's Playgrounds of Owerri, Nigeria
Abstract: Chemical species of metals affect toxicity but trends of these metals species in soils are less studied. This study examined the trends and variability of species of metals in soils from playgrounds within Owerri. Eighty-one composite soil samples from nine playgrounds were collected in dry and rainy season to reflect spatio-seasonal variability. Samples were characterized by standard methods in triplicates and then extracted sequentially. Concentrations of metal species were determined …
Published in International Journal of Green Chemistry · Vol. 11, Issue 1, 2025 · pp. 28–45 Read article
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Kinetic Modifications in Polymers under Cryogenic Stress: A Thermochemical Study
Abstract: This study explores the kinetic modifications in polymers subjected to cryogenic stress, focusing on the thermochemical behavior and structural changes that occur at low temperatures. Polymers, when exposed to cryogenic conditions, exhibit distinct molecular rearrangements, influencing their mechanical properties and thermal stability. The investigation involves characterizing these polymers using advanced spectroscopic and thermal analysis techniques to identify alterations in crystallinity, molecular weight distribution, and glass transition temperature. By examining the …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 10, Issue 2, 2024 Read article
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Thermal Dynamics and Kinetic Modelling of Cryogenic Fuels in Aerospace and IndustrialApplications
Abstract: Cryogenic fuels are critical for high-speed aerospace and industrial applications, where efficient handling, storage, and usage are paramount for performance and safety. This study explores the thermal dynamics and kinetic modeling of cryogenic fuels, focusing on liquid handling systems and propellant technologies. Utilizing computational fluid dynamics (CFD) analysis, the research evaluates the behavior of cryogenic liquids within insulated vessels under extreme temperature conditions, identifying key parameters that influence thermal stability …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 10, Issue 2, 2024 Read article
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Evaluation of the Potential of Fused Silica Material: The Relationship of Temperature, Frequency, and Polarization
Abstract: Fused silica, a high-purity form of silicon dioxide, is widely recognized for its exceptional thermal stability, optical transparency, and low dielectric loss. This study evaluates the potential of fused silica as a material in advanced optical, electronic, and photonic applications by exploring its properties in relation to temperature, frequency, and polarization. Through a comprehensive analysis, we examine the temperature-dependent changes in its thermal and optical properties, including thermal expansion, refractive …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 10, Issue 2, 2024 Read article
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A Comparative Study of Ceramic Foam Filtration Methods in Metal Casting
Abstract: Ceramic foam filtration has emerged as a revolutionary technology in the metal casting industry, significantly enhancing the quality of cast products by effectively removing inclusions and impurities from molten metal. This study provides a comprehensive examination of the mechanisms underlying ceramic foam filtration, focusing on the interactions between the molten metal and the ceramic filter material. Various types of ceramic foams, including alumina, zirconia, and silicon carbide, are analyzed for …
Published in International Journal of Analytical and Applied Chemistry · Vol. 10, Issue 2, 2024 · pp. 21–27 Read article
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Trending Aspects of Green Synthesis of Silver Nanoparticles and Their Biomedical Applications: A Review
Abstract: For the past few decades, researchers have been fascinated by nanotechnology and nanoparticles due to their unique physico-chemical characteristics, such as increased surface area, reduced size, and improved reactivity, making them useful for various industrial, scientific, and medicinal applications. Silver nanoparticles are widely used, particularly in the biomedical sciences, since they are less toxic than other metal nanoparticles, meaning that they do not harm healthy human or host cells. They …
Published in International Journal of Green Chemistry · Vol. 11, Issue 1, 2025 · pp. 1–27 Read article
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Dry Season Impact on Water Quality of Nworie River, Owerri, Nigeria
Abstract: This study assessed the physicochemical properties and heavy metal contamination of Nworie River during the dry season. Fifteen composite water samples were collected from strategic points along the river. In-situ measurements of pH, temperature, and electrical conductivity were undertaken, while laboratory analyses determined heavy metal concentrations. Pollution Load Index and Contamination Factor were employed to evaluate the overall water quality and contamination levels. Results indicated moderate to high levels of …
Published in International Journal of Analytical and Applied Chemistry · Vol. 11, Issue 1, 2025 · pp. 40–49 Read article
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Performance Analysis of High-Volume Fly Ash and Recycled Aggregate in M50 Concrete: Workability and Compressive Strength
Abstract: Abstract This study evaluates the impact of recycled aggregate (RA) and high-volume fly ash (HVFA) on the workability and compressive strength of M50 grade concrete. Slump tests were conducted for various water-cement ratios, using a mix ratio of 1:0.69:2.29 and a high-range water reducer. The compressive strength of concrete mixtures incorporating varying percentages of RA and FA was measured at 7, 28, and 90 days. Results indicate that replacing natural …
Published in International Journal of Concrete Technology · Vol. 10, Issue 2, 2024 · pp. 25–32 Read article
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Understanding and Controlling Metal Pad Roll Instability in High-Capacity Liquid Metal Battery Systems
Abstract: The present study delves into the roll instability of metal pads within cylindrical liquid metal battery cells, focusing on the characteristics, control, and modeling of the instability within an energetic materials context. Explicit formulas are derived that offer theoretical benchmarks for magnetohydrodynamic solvers OpenFOAM and SFEMaNS, revealing an excellent alignment with experimental observations on gravity wave damping rates in multilayered liquid metal battery systems. Instability thresholds are analyzed for metal …
Published in International Journal of Energetic Materials · Vol. 10, Issue 2, 2024 · pp. 12–16 Read article
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Impact of External Contextual Factors on Construction Project Performance
Abstract: The construction industry is inherently complex, influenced by a myriad of external contextualized factors that impact project performance. Based on a thorough analysis provided in the paper, this abstract offers a thorough summary of these factors. The study categorizes external contextualized factors into four main dimensions: cost, time, scope, and dominant area of influence. Factors, such as “Availability of workforce/material/equipment,” “Land Acquisition,” “Government Policy Changes,” and “Legal disputes between Project …
Published in International Journal of Town Planning and Management · Vol. 10, Issue 2, 2024 · pp. 28–47 Read article
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One-Step Fabrication of Superomniphobic Pvdf-HFPSiO2Membrane for Long-Term CO2 Absorption inMembrane Gas Absorption System
Abstract: Membrane pore wetting is one of the major challenges for membrane gas absorption, especially when low surface tension liquid absorbents such as amine absorbents are utilized. To minimize diffusion resistance across the membrane, maintaining a non-wetted operating mode in membrane gas absorption is crucial. In this study, a superomniphobic polyvinylidene fluoride-cohexafluoropropylene membrane was fabricated by adding silica nanoparticles (SiO2) in an ethanol coagulation bath through non-solvent-induced phase separation. The surface …
Published in International Journal of Composite Materials and Matrices · Vol. 10, Issue 2, 2024 · pp. 35–44 Read article
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Advances in Copolymer Synthesis and Their Industrial Applications
Abstract: Copolymers, composed of two or more distinct monomers, have seen tremendous growth due to their adaptability in creating materials with enhanced properties for diverse applications. Recent advances in synthesis techniques, such as controlled radical polymerization (CRP), ring-opening polymerization (ROP), and living polymerization have enabled precise control over copolymer architectures, offering tailored properties, such as improved thermal stability, flexibility, and biodegradability. These advancements have had a transformative impact across various industrial …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 10, Issue 2, 2024 · pp. 51–56 Read article
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Strengthening of Foundation for Pavement
Abstract: Abstract The bearing capacity of soil is a critical factor in construction engineering, particularly for designing and constructing pavement foundations. It directly depends on the load intensity the soil can support. For Class AA loading conditions, a minimum bearing capacity of 20 t/m² is required. However, the presence of frequent rain and flash floods often reduces the soil's effectiveness due to water saturation. Saturated soil experiences a 50% decrease in …
Published in International Journal of Construction Engineering and Planning · Vol. 10, Issue 2, 2024 · pp. 9–14 Read article
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Velocity and Concentration Distribution of Turbidity Currents
Abstract: AbstractThis study conducts a comprehensive analysis of the velocity and concentration characteristics withinturbidity currents, focusing on detailed evaluations of the hydrodynamic and sediment transportproperties. The investigation includes separate calculations for the velocity and concentrationdistributions within the near-boundary and jet regions, allowing for an in-depth comparison betweenthese distinct flow areas. By computing dimensionless profiles of both velocity and concentration, thestudy offers a visual representation of flow behaviors and sediment patterns, which …
Published in International Journal of Water Resources Engineering · Vol. 10, Issue 2, 2024 · pp. 15–22 Read article
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Optimized Fault Current Prediction for DFIG-Based Wind Turbines Using Type-I Fuzzy Logic Controller
Abstract: The increasing integration of Doubly-Fed Induction Generator (DFIG)-based wind turbines into modern power grids requires robust fault detection and prediction mechanisms to ensure stable and reliable operation. However, accurately predicting fault currents in such systems is challenging due to the nonlinear dynamics involved. This study presents an optimized fault current prediction framework using a Type-I Fuzzy Logic Controller (FLC) to address these challenges. The proposed approach effectively models the uncertainties …
Published in International Journal of Analog Integrated Circuits · Vol. 10, Issue 2, 2024 · pp. 41–50 Read article
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Role of Industries in Technical Education in India: Past, Present, and Future
Abstract: Engineering education in India is passing through trying times. Over the last century, Industries bloomed and stabilized only to slow down due to globalisation and rise of China as the global manufacturing hub. Technical education in India had a humble beginning but over the last two decades has seen mushrooming of institutions with a commercial intent and the very purpose is defeated in majority of the cases. In the quest …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 10, Issue 2, 2024 · pp. 17–21 Read article
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The Study of Magnetic Properties and Applications of II–VI Diluted Magnetic Semiconductor, Zn1–xMnxO Nanoparticles
Abstract: Ferromagnetism in II-VI diluted magnetic semiconductor, Zn1-xMnxO is studied. The magnetic behavior of this Diluted Magnetic Semiconductor (DMS) is determined by using the Heisenberg and the Green’s formalism. Heisenberg’s Model describes the Hamiltonian of the system in terms of spin density and excitons. In the same way, Green’s theorem is used for calculating magnetic quantities. These theorems are employed to estimate the origin of ferromagnetism in Zn1-xMnxO nanostructures. For spin- …
Published in International Journal of Applied Nanotechnology · Vol. 10, Issue 2, 2024 · pp. 47–55 Read article
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Recent Trends and Innovations in Energy Efficiency: The Role of AI and Advanced Technologies in Revolutionizing the Energy Sector
Abstract: This comprehensive review delves into the recent trends and innovations shaping the landscape of energy efficiency. From the widespread adoption of energy-efficient appliances to the integration of advanced energy management systems, significant strides have been made in reducing energy sconsumption and mitigating environmental impact. The paper explores the pivotal role of energy storage solutions in enabling a more sustainable energy future, highlighting the advancements in battery technology, grid-scale storage, and …
Published in International Journal of Energetic Materials · Vol. 10, Issue 1, 2024 · pp. 8–16 Read article
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Polymer-based Nanocomposite Material for Packaging Highly Perishable Dairy Foods: A Review
Abstract: The dairy industry plays a crucial role in global diets, with India as the leading milk producer and dairy exporter. The Indian dairy market is expected to grow significantly by 2030, underscoring the need to maintain high standards of food quality and safety. Dairy products like milk, cheese, and butter are prone to deterioration due to their complex composition and exposure to environmental factors, which require efficient packaging solutions. Effective …
Published in International Journal of Composite and Constituent Materials · Vol. 10, Issue 1, 2024 · pp. 40–45 Read article
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A Review Paper on Novel Lipid Nanoparticles for Enhanced Bioavailability of Bioactive Compounds in Breast Cancer Cell Lines
Abstract: Most bioactive compounds from natural products are heavily relied on drug development due to their biological, chemical and pharmacological properties. Some compounds exhibiting anticancer properties have also been reported. However, they present a challenge in achieving the effective absorption and delivery in the body. This is due to minimal bioavailability, fluctuation of plasma drug concentration, low tolerance, first-pass effect which leads to less desired efficacy. Therefore, this calls for an …
Published in International Journal of Composite and Constituent Materials · Vol. 10, Issue 1, 2024 · pp. 1–9 Read article