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806 articles for “TEM”
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A LOOK AT ANALOGUE SIGNALS
Abstract: Analogue signals are what classic communication and signal processing systems are built on. These signals are necessary for showing things that happen in the real world, such sound, light, and temperature. They change all the time. In electronics and communication, signals are necessary for sending information from one place to another. There are two main types of signals: analogue and digital. Analogue signals use continuous and smoothly changing waveforms to …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 11, Issue 2, 2025 · pp. 17–27 Read article
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Predicting User Engagement on Social Media: A Comparative Study of Machine Learning-based Modeling Approaches
Abstract: Abstract Even while mobile social apps are becoming more and more important in people's daily lives, little is known about the elements that motivate users to interact with these apps. The goal of this work is to analyze and define the transition patterns of individual users' in-app actions as a temporally changing action graph. According to our investigation, action graphs are a useful tool for characterizing user behaviour patterns and …
Published in International Journal of Computer Aided Manufacturing · Vol. 11, Issue 2, 2025 · pp. 41–62 Read article
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Study of Corrosion and Corrosion Protection of Rebar Steel in Saline water
Abstract: Corrosion is major problem with metals. When they come in contact of surrounding corrosive medium to construct a corrosion cell on their interface, metals undergo in corrosion reactions. Such environments metals can be exhibited uniform, galvanic, pitting, stress, crevice, embrittlement, intergranular corrosion etc. The corrosion of phenomenon of rebar steel studied in saline water. It creates corrosive medium for rebar steel due to availability of chloride ions. Rebar steel is …
Published in International Journal of Metallurgy and Alloys · Vol. 11, Issue 2, 2025 · pp. 1–11 Read article
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Thermoelectric Energy Recovery from Exhaust Systems: Design, Simulation, and Performance Analysis of a Waste-Heat Recovery Prototype
Abstract: In today’s context, energy plays a vital role in environmental development. Unfortunately, most energy strategies that yield immediate benefits often contribute to long-term environmental degradation. The law of conservation of energy states that “Energy cannot be created or destroyed; it can only change from one form to another.” This idea emphasizes the fact that no technological improvement can continue eternally without having negative effects. Every living thing on the world …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 11, Issue 2, 2025 · pp. 1–21 Read article
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Investigation of Thermo-Acoustic Properties of Ethanol-Cyclohexane Binary Mixture
Abstract: The density, viscosity, and speed of sound for ethanol-cyclohexane binary mixtures were determined across mole fractions ranging from 0.1 to 0.9 using an Anton Paar DSA 5000 M within the temperature span of 288.15–318.15 K. From these experimental measurements, several thermodynamic and acoustic properties, such as isentropic compressibility, relative association, free volume, relaxation time, Gibbs free energy of activation, internal pressure, and solubility parameter, were derived. These parameters serve as …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 11, Issue 2, 2025 · pp. 1–14 Read article
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Mathematical Modeling of Mass Transfer of Heavy Metals from the Diffusion of Condemned Oil in Soil Environment
Abstract: The diffusion and reaction kinetics of heavy metals in soil are critical factors influencing pollutant migration and environmental remediation strategies. Understanding the diffusion and reaction kinetics of heavy metals in soils is crucial for assessing environmental contamination and designing effective remediation strategies. This study investigated the diffusion behavior of heavy metals in soil media under varying thermal and physical conditions, employing a first- order reaction model based on Fick’s second …
Published in International Journal of Analytical and Applied Chemistry · Vol. 11, Issue 2, 2025 Read article
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Synthesis of mixed metal oxides CuO-SnO, composite nano material for the study ofefficiency of textile fabrics as UV-absorbers
Abstract: In the present study we report the synthesis and characterization of nanosized copper oxide,tin oxide and composite of copper and tin oxide and their application on cotton fabrics forUV shielding. The CuO-SnO nanocomposite material prepared under different temperature90 0 - 150 °C by using water and 1,2-ethanediol as a solvent. Copper oxide, tin oxide andcomposite of copper and tin oxide nanoparticles were then applied to cotton sample to impartsunscreen activity …
Published in International Journal of Composite and Constituent Materials · Vol. 11, Issue 2, 2025 · pp. 1–5 Read article
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Microstructure and Mechanical Behavior of Microalloyed Forging Steels
Abstract: The microalloyed (MA) forging steels have been developed over the past several decades and they are gradually employed in the high-performance applications in many structural, automotive, and numerous engineering applications. The principle of microalloying contents in the Fe–C alloy system, thereby preferably combined with different mechanical, heat treatment, and microalloying solubility control the precipitation behaviors that lead to enormous opportunities to develop a new generation of high strength low alloy …
Published in International Journal of Metallurgy and Alloys · Vol. 11, Issue 2, 2025 · pp. 1–14 Read article
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Reactor-Made Polypropylene for 3D Printing: A Low-Crystallinity Approach
Abstract: 3D printing is technology that enables the complex structure, which is difficult in conventional technique. However, relatively slow manufacturing process and using of limited polymeric material leads to attention of scientist towards newer cost-effective material and technology. In this study, we overcome this issue by synthesizing reactor-made polypropylene (mPP) using Dimethylsilylene-(cyclopentadienyl) (fluorenyl)-zirconium-dichloride metallocene catalyst. The polymerization process was systematically optimized by varying Al/Zr molar ratios, catalyst concentrations, and temperatures to …
Published in International Journal of Polymer Science and Engineering · Vol. 11, Issue 2, 2025 · pp. 1–17 Read article
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Methods for Obtaining Ozone-Resistant Rubber Based on Elastomers
Abstract: Technical Rubber products are one of the main products with the widest range of uses today. To expand the scope of RTM use, it is necessary to increase its varieties. The most demanded rubber products are rubber products with high mechanical strength in contact with ozone. In this work, several polymer mixtures were used to obtain ozone-resistant rubber products. For this purpose, ethylene propylene terpolymer, polyvinyl chloride, and butadiene-nitrile rubber …
Published in International Journal of Polymer Science and Engineering · Vol. 11, Issue 2, 2025 · pp. 1–5 Read article
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A Comparative Environmental Analysis of Traditional and Concrete Construction Methods in Urban India: Statistical Insights into Carbon Footprints, Resource Consumption, and Waste Generation
Abstract: Significant effects on the environment and climate change have resulted from India’s shift from traditional building techniques to the growth of concrete jungles. Traditional structures used passive cooling, cross-ventilation, and the thoughtful use of courtyards and open spaces. They were made from natural materials that were sourced locally, such as clay, wood, stone, and thatch. Because they were made to use as little energy as possible, encourage natural temperature regulation, …
Published in International Journal of Housing and Human Settlement Planning · Vol. 11, Issue 2, 2025 · pp. 1–8 Read article
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Advances in Heat Management for High-Efficiency Gas Turbines: Technologies and Applications
Abstract: Abstract Heat management plays a crucial role in enhancing the efficiency and performance of high-efficiency gas turbines. As the demand for cleaner and more energy-efficient power generation increases, optimizing heat management in gas turbines becomes essential. This article explores the latest advancements in heat management technologies for gas turbines, with a focus on their application to improve thermal efficiency, and operational reliability, and reduce emissions. Key techniques, such as advanced …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 10, Issue 2, 2024 · pp. 6–10 Read article
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IoT-Powered Weather Monitoring and Irrigation Automation: Transforming Modern Farming Practices
Abstract: It is proposing an IoT-based weather monitoring system. This will monitor, in real-time, the critical environmental parameters aid for farming. Soil moisture, temperature, humidity, and rainfall will be measured parameters that help optimize agricultural practices and perfect the use of water. The IoT technology will, therefore, include a microcontroller such as NodeMCU that tracks soil moisture levels and automates irrigation. If the soil moisture falls below 50%, then the programming …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 11, Issue 1, 2025 Read article
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Green Synthesis of Silver Nanoparticles from Trapa bispinosa Fruit Extract: Characterization and Promising Antimicrobial Activity Against Multidrug-Resistant Pathogens
Abstract: Silver nanoparticles (Ag NPs) are widely recognized for their applications in medicine, electronics, and environmental remediation. This study presents a new green synthesis method for Ag NPs using Trapa bispinosa fruit extract as a natural reducing agent and stabilizing agent. Characterization of the synthesized Ag NPs through X-ray diffraction (XRD) confirmed a crystalline structure consistent with the face-centered cubic (fcc) arrangement, with peaks at (111), (200), (220), (311), and (222), …
Published in International Journal of Applied Nanotechnology · Vol. 11, Issue 1, 2025 · pp. 38–46 Read article
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Supercritical Fluid Extraction: Mechanisms, Applications, and Recent Developments
Abstract: Supercritical Fluid Extraction (SFE) is an advanced and versatile separation technique that harnesses the unique properties of supercritical fluids (SCFs) to extract a wide variety of compounds from both solid and liquid matrices. Supercritical fluids, which are substances at a temperature and pressure above their critical points, possess both liquid-like density and gas-like viscosity, making them highly effective solvents for extraction processes. This review delves into the underlying mechanisms of …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 1, 2025 Read article
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Analysis of Heat Mitigation Potential of Coir Mat and Perlite Layers vs Green Roof Systems
Abstract: This study explores the heat mitigation potential of coir mats and green facades applied to roofs. Being situated near the equator, buildings are subjected to intense solar radiation due to the sun’s proximity and minimal declination angle. Consequently, roofs transfer a substantial amount of heat into indoor spaces, making effective thermal regulation strategies essential. Roof insulation emerges as a key method for managing indoor temperatures, with sustainable, locally sourced, climate-friendly, …
Published in International Journal of Sustainable Building Technology · Vol. 8, Issue 1, 2025 · pp. 1–7 Read article
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Thermodynamic Analysis of Evacuated Tube Solar Collector based Water Heating System: Experimental Approach
Abstract: Energy from the sun is the most profuse and least extracted source of energy ever used in the history of usable resources. Current work aims to harness solar energy for heating water and put it into use by maximizing its effect through evacuated tube solar collector (ETSC). In this work, the effect of low mass flow rates on thermodynamic performance (energy efficiency, exergy efficiency and rate of irreversibility) of an …
Published in International Journal of Electrical Power System and Technology · Vol. 11, Issue 1, 2025 Read article
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Lead (II) Ion Biosorption from Aqueous Solution ontoHexadecyltriammonium Bromide (HDTMA-Br) Modified Dry Water Hyacinth
Abstract: Heavy metal release into the environment by industrial activities has become a persistent problem,with these contaminants continually increasing in concentration. Heavy metals not only circulatethrough ecosystems but also accumulate in organisms over time, which elevates their toxic effectsalong the food chain. This research was conducted to explore the efficiency of biosorption inremoving lead (II) ions from aqueous solutions using water hyacinth powder modified withhexadecyltriammonium bromide (HDTMA-Br), a cationic surfactant. The …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 10, Issue 2, 2025 Read article
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Awareness level of family caregivers regarding post-operative home care of their children suffering with congenital heart diseases
Abstract: Background -The worldwide incidence of congenital heart diseases is 8-10/1000 live births. Congenital heart diseases refer to structural abnormalities in the heart present at birth. These defects can disrupt the normal flow of blood within the heart. While some conditions may require little to no intervention, others necessitate prompt treatment when identified. Family caregivers often wish to play an active role in the post-operative care of children with congenital heart …
Published in International Journal of Pediatric Nursing · Vol. 11, Issue 1, 2025 · pp. 1–7 Read article
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Perovskite Oxides: A Multifunctional Material Class for Solar-to-Fuel Energy Conversion
Abstract: Harnessing concentrated solar energy for thermochemical water and carbon dioxide splitting presents a promising pathway to produce liquid hydrocarbon fuels as a sustainable alternative to fossil fuels. This process relies on advanced redox materials to facilitate efficient chemical reactions within thermochemical cycles. Traditionally, research has focused on binary oxides, particularly ceria, due to its redox capabilities. However, ceria’s high reduction temperature and limited tunability via extrinsic doping hinder its optimization …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 11, Issue 1, 2025 · pp. 36–45 Read article