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806 articles for “TEM”
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Study of Corrosion of Ferrous and Non-Ferrous Metals in Aqueous Medium
Abstract: Metals, like ferrous and non-ferrous, interact on their interface to develop corrosion cells. The aqueous medium produces a hostile environment due to the availability of dissolved oxygen, acids, bases, salts, bio-waste, and effluents. The solubility of acidic gases oxide of carbon, oxide of nitrogen, and oxide of sculpture create an acidic medium for metal. These unfriendly environments accelerate corrosion reactions and metals exhibit uniform, galvanic, pitting, crevice, stress, and lynching …
Published in International Journal of Metallurgy and Alloys · Vol. 11, Issue 1, 2025 · pp. 44–50 Read article
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Liquid-Liquid Extraction Strategies for the Isolation of Bioactive Heterocyclic Compounds
Abstract: Liquid-liquid extraction (LLE) is a widely employed technique for the isolation of bioactive heterocyclic compounds from natural products, fermentation broths, and synthetic mixtures. The efficiency of LLE depends on several factors, including solvent selection, pH manipulation, salting-out effects, and temperature control. Conventional solvent systems, such as water-organic solvent pairs, are commonly used, while advanced strategies, including ionic liquids (ILs), deep eutectic solvents (DESs), ultrasound-assisted extraction (UAE), and microwave-assisted extraction (MAE), …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 1, 2025 Read article
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Mathematical Computation, Ecological and Human Health Implications of Water Quality Index of Bodo Creek, Niger Delta, Nigeria
Abstract: Bodo Creek has huge importance to the people in the area and also constitute their source of fishing, boating, dredging, and transportation to Bonny Island among other neighbouring coastal communities in Rivers State. Water contamination is a significant issue, but it has also brought up important environmental and public health concerns. The weighted arithmetic water quality index approach was used in this work to determine the Water Quality Index (WQI) …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 1, 2025 Read article
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Sustainable Labware Solutions: A Study of Biodegradable Modified Polypropylene for Sterilization‑Resistance
Abstract: This study investigated the impact of incorporating a 1‑3% by weight of biodegradable additive into polypropylene (PP) using twin‑screw extrusion, followed by injection molding to prepare test specimens. The effects of the additive on the rheological, thermal, mechanical, and optical properties of PP were investigated, along with the impact of two common sterilization methods: autoclave (121°C, 15 min, 0.11 MPa) and electron beam (E-Beam, 50 kGy) irradiation. The results showed …
Published in International Journal of Composite Materials and Matrices · Vol. 11, Issue 1, 2025 Read article
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Improving Thermal Comfort and Reducing Peak Cooling Loads in High-Rise Buildings Through the Use of Phase Change Materials in Enhanced Building Envelopes
Abstract: A potential remedy for the problems of peak cooling loads and thermal discomfort in high-rise buildings is the use of phase change materials (PCMs) into building envelopes. This study explores the potential of PCMs to enhance energy efficiency and occupant comfort by reducing heat gain and moderating indoor temperature fluctuations. The paper investigates various PCM types, integration methods, and their impact on building performance through simulations and experimental analysis. The …
Published in International Journal of Sustainable Building Technology · Vol. 8, Issue 1, 2025 · pp. 29–37 Read article
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Role of Hybrid Ventilation Strategies in Energy Efficiency
Abstract: With the growing global demand for energy, significant concerns are also growing because of its environmental impacts. The process of production and consumption of energy itself has harmful effects on the environment. Buildings are one of the major contributors to energy consumption in the modern world. The Heating, Ventilation, and Air Conditioning (HVAC) system accounts for most of the building’s energy consumption and is important for providing a comfortable indoor …
Published in International Journal of Sustainable Building Technology · Vol. 8, Issue 1, 2025 · pp. 21–28 Read article
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Innovative Low-Carbon Construction Technologies for Energy-Efficient Housing and Sustainable Community Spaces
Abstract: This 10-acre biophilic group housing project in Gurgaon redefines the future of living by seamlessly integrating low-carbon construction technologies with energy-efficient design. It exemplifies how biophilic architecture and smart building automation systems can work together in a harmonious, yin-yang relationship – balancing nature with technology to create sustainable, comfortable, and forward-thinking homes. Biophilia, with its emphasis on integrating nature into urban spaces, forms the heart of the project. Diverse greenery, …
Published in International Journal of Sustainable Building Technology · Vol. 8, Issue 1, 2025 · pp. 8–20 Read article
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Hardware-Centric Analysis and Optimization of Perturb and Observe Techniques for Maximum Power Point Tracking in Solar Photovoltaic Systems
Abstract: Operating conditions like temperature and irradiance fluctuations can significantly reduce the power output of PV systems, presenting a key challenge. Additionally, contemporary MPPT methods demand high computational resources and face difficulties in maintaining optimal PV array output when weather conditions change quickly. The P&O technique, though widely used, falls short in accurate maximum power point tracking amid sudden shifts in solar insolation due to incorrect adjustments in the duty cycle. …
Published in International Journal of Electrical Power System and Technology · Vol. 11, Issue 1, 2025 Read article
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Excitation System, Proportional and Integral Controls of a Synchronous Generator for Reducing Adverse Impacts to Power System from Voltage Fluctuations
Abstract: The project analyzes the voltage fluctuations caused by any disturbance in a power system and minimizes the oscillations by controlling the excitement field using a feedback control loop. Adequate numbers of journal papers and literature materials were researched and reviewed to understand the principles of generator excitation and investigate various control systems which can be worked upon to keep the voltage output stabilized. It is known that Automatic Voltage Regulator …
Published in International Journal of Electrical Power System and Technology · Vol. 11, Issue 1, 2025 Read article
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Advancing Clean Energy: The Role of Biohydrogen Technology
Abstract: The process of gasification turns carbonaceous materials derived from biomass or fossil fuels into gases, with nitrogen (N2), carbon monoxide (CO), hydrogen (H2), and carbon dioxide (CO2) being the main fractions. By reacting carbonaceous materials (coal, petroleum, and biomass) with a regulated amount of oxygen and/or steam at high temperatures, a thermochemical process known as gasification produces carbon monoxide and hydrogen. Methanol and chemicals like urea and ammonia, which are …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 11, Issue 1, 2025 · pp. 46–54 Read article
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Transforming Carbon: The Science and Potential of Gasification
Abstract: Methanol and chemicals like urea and ammonia, which are the building blocks of many fertilizers, can be produced via the gasification process. Additionally, gasification can assist in the production of transportation fuels from biomass, coal, oil, and sands. Drying, pyrolysis, combustion, cracking, and reduction are the five distinct thermal processes that make up gasification. Drying removes moisture from the feedstock, while pyrolysis breaks down complex hydrocarbons into simpler molecules. Combustion …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 11, Issue 1, 2025 · pp. 24–35 Read article
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Nanofibers of Ultra-High Molecular Weight Polypropylene (UHMWPP) Composites: Processing, Properties and Applications
Abstract: The nanofibers of ultra-high molecular weight polypropylene (UHMWPP) composite made with polyethylene terephthalate (PET) by electrospinning process. The high-temperature setup developed by hardware modifications in electrospinning machine to perform such experiments. Bilayer composite mat of UHMWPP and PET nanofiber was fabricated by deposition of monolayer of UHMWPP over PET monolayer by electrospining process. The developed composite mat products were characterized by SEM, DSC and other physico-chemical methods. The composite mat …
Published in International Journal of Polymer Science and Engineering · Vol. 11, Issue 1, 2025 · pp. 35–48 Read article
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An Efficient Machine Learning System forPrediction of Water Quality with Explainable AI
Abstract: Abstract Water availability and quality have been issues globally, especially in developing nations. Unchecked urbanization and industrialization contaminate natural water supplies and aquifers, potentially introducing physical, chemical, and biological contaminants. Over 80% of illnesses are caused by drinking tainted water, according to a WHO assessment. As clean water sources become more at risk, water quality protection has become of human, environmental, and economic importance worldwide. These water sources, crucial for …
Published in International Journal of Water Resources Engineering · Vol. 11, Issue 1, 2025 · pp. 33–42 Read article
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Applications of Sesame Residues as Sorbents for Oil Removal from Produced Water
Abstract: Large amounts of produced water are produced in tandem with the production of crude oil. Both dissolved and dispersed oil are present in produced water, which can contaminate the environment and pose health risks to people. In this study, the oil component, cadmium, and lead ions were extracted from the generated water using sesame residues and agricultural wastes. The sesame residues were dried, size-reduced, and ground. Standard techniques were used …
Published in International Journal of Agrochemistry · Vol. 11, Issue 1, 2025 · pp. 5–16 Read article
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Influence of Surface Treatments on the Adhesion of Plant Fibers to Epoxy Resin
Abstract: Because of their primary benefits, moderate strength and stiffness, low cost, and the fact that they are a renewable, biodegradable, and environmentally safe material, natural fibers are seen to have potential use as reinforcing agents in polymer composite materials. Since they are inherently hydrophilic, moisture can easily build up on them, weakening or plasticizing the fibers’ adhesion to the surrounding matrix and affecting the performance of composite materials used in …
Published in International Journal of Agrochemistry · Vol. 11, Issue 1, 2025 · pp. 12–24 Read article
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Improving Prestressed Concrete Box Girders Using Polymer Composites: Experimental Findings and Analysis
Abstract: Prestressed concrete box girder bridges exhibit complex structural behavior due to various loading scenarios. Extensive studies, both experimental and numerical, have helped advance their use in engineering. The spatial stress in prestressed concrete box girder bridges, especially during construction and service phases, has been analyzed using shell cells, which provide more accurate tensile stress data than beam cells. The deck with the numerous hat section was evaluated in the current …
Published in International Journal of Polymer Science and Engineering · Vol. 10, Issue 2, 2024 · pp. 6–11 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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Role of User Experience in Designing Human Settlements for Composite Climate
Abstract: Integrated settlements designed in a composite climate, characterised by vast variations in temperature, humidity, and seasonal extremes require the need to consider both the environment and the people. As end-users, through User Experience (UX) practices, it is always possible to improve the liveability and sustainability of such settlements. In this research, a questionnaire that aims at gathering user insights on how to design human settlements for composite climates is applied …
Published in International Journal of Housing and Human Settlement Planning · Vol. 11, Issue 1, 2025 · pp. 28–36 Read article
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Optimizing Dyeing Processes for Nylon: A Study onUltrasonic and Natural Dye Application
Abstract: This study focuses on the application of natural dyes, specifically those derived from onion (Allium cepa) extracts, for dyeing nylon fabric, while assessing the impact of different mordants, including potassium dichromate, copper sulfate, and alum. The research explores the effectiveness of High Temperature High Pressure dyeing techniques to enhance dye uptake and color fastness. Natural dyes, traditionally viewed as less effective than synthetic counterparts, are being reevaluated for their eco-friendly …
Published in International Journal of Green Chemistry · Vol. 10, Issue 2, 2024 · pp. 9–15 Read article
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Sustainable Energy Solutions: Enhancing the Efficacy and Stability of Lead Iodide Perovskite Solar Cells
Abstract: Lead iodide perovskite solar cells have emerged as a transformative technology in the field of photovoltaics, demonstrating remarkable power conversion efficiencies that rival traditional silicon- based solar cells. However, conacerns regarding their long-term stability and environmental impact pose significant challenges for their widespread adoption. This study investigates the current advancements in lead iodide perovskite solar cells, emphasizing strategies to enhance both their efficiency and stability. We explore innovative approaches, such …
Published in International Journal of Green Chemistry · Vol. 10, Issue 2, 2024 · pp. 1–8 Read article