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432 articles for “metal”
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POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) AND HEAVY METALS IN SELECTED DRIED SEA FOODS FROM PORTHARCOURT CITY NIGERIA
Abstract: Polycyclic aromatic hydrocarbons (PAHS) and heavy metals constitute environmental recalcitrant pollutants which are toxic and carcinogenic. The levels of PAHs and heavy metals (As, Hg, V, Zn, Pb, and Cr) in dried sea foods: prawn (Panaeus monodon), water snail (Bithynia tentaculata), periwinkle (Littorina littorea), conch (Lobatus gallus) and Oyester (Ostrea edulis) were determined. PAHs were determined using GC/FID and the heavy metals were determined using AAS. Total PAHs ranged from …
Published in International Journal of Analytical and Applied Chemistry · Vol. 6, Issue 1, 2020 · pp. 24–34 Read article
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Development of Predictive Model on Corrosion of Metals in Swampy Soil Environment
Abstract: The research carried out to examine the usefulness of corrosion in metals in swampy soil. It also reveals the weight loss and corrosion rate in a metal. The following physicochemical parameters which include BOD, COD, pH and microbial activities were modelled. The extent of metal corrosion in swampy soil is dependent on many different and often interrelated factors, trying to predict what may happen to a specific object after wrecking …
Published in International Journal of Environmental Chemistry · Vol. 6, Issue 1, 2020 · pp. 15–29 Read article
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TRACE METALS IN SURFACE WATER AND SEDIMENTS OF LOWER NEW CALABAR RIVER, RIVERS STATE, NIGERIA
Abstract: The concentration of trace metals in surface water and sediments of lower New Calabar River was investigated. The results obtained showed that the trace metals Pb, Cd, Fe, Zn, Co and Cu occurred in both surface water and sediments. There was high distribution of the trace metals according to the sample locations attributed to both anthropogenic and natural resources. The concentration of trace metals in surface water followed the trend …
Published in International Journal of Environmental Chemistry · Vol. 6, Issue 2, 2020 · pp. 39–52 Read article
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Nanostructured Metal Oxides as Promising Electrode Materials for Microbial Fuel Cells
Abstract: Microbial fuel cells (MFCs) are emerging as a promising technology for generating sustainable energy from organic waste materials. One of the key challenges in developing efficient MFCs is the selection of suitable electrode materials. In recent years, nanostructured metal oxides have gainedconsiderable attention as electrode materials for MFCs due to their unique structural and electrochemical properties. This review highlights the recent progress in the development and application of various types …
Published in International Journal of Applied Nanotechnology · Vol. 8, Issue 2, 2022 · pp. 23–30 Read article
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The Role of Metallurgy in Advanced Manufacturing and Engineering
Abstract: This field encompasses the study of the properties, behaviors, and processing of metals and their alloys, influencing the development and optimization of materials for a wide range of applications. In advanced manufacturing, metallurgical innovations are crucial for improving material performance, enhancing production efficiency, and driving sustainability. It examines how metallurgical advancements contribute to the production of lightweight, high-strength, and corrosion-resistant materials, which are essential for aerospace, automotive, biomedical, and energy …
Published in International Journal of Metallurgy and Alloys · Vol. 9, Issue 2, 2023 · pp. 12–17 Read article
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Experimental Investigations for Reduction of Defects In MIG Welding Process
Abstract: An experimental analysis has been tested to understand the roll of process parameter of MIG welding on under frame assembly components. Three important process parameter like a current, voltage and rate of gas flow MIG Welding process were used to reduce the welding defects in under frame assembly components. Taguchi method approach has been adopted to identify the process parameter level to have reduced welding defects in under frame assembly …
Published in International Journal of Mechanics and Design · Vol. 8, Issue 2, 2022 · pp. 35–45 Read article
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Microstructural and Hardness Study of A390/20wt.% SiC Functionally Graded Metal Matrix Composite
Abstract: Functionally graded materials are the upcoming new class of advanced materials, which exhibit gradual change in the microstructure and the composition in a definite direction, and hence variation in functional performance within a part. Functionally graded metal matrix composites (FGMMC) are FGM with metal and ceramic constituents. Aluminum-Silicon alloys are well-known for their unique combination of desirable characteristics, which includes excellent castability and less density combined with good mechanical properties. …
Published in International Journal of Manufacturing and Materials Processing · Vol. 6, Issue 2, 2020 · pp. 52–58 Read article
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Impact, Flexural, and Hardness Properties of AISI 1018 Mild Steel Butt Joint Welded using Gas Metal Arc Welding (GMAW) under Various Welding Parameters
Abstract: AbstractThe effects of welding parameters such as welding current, voltage, and travel speed on the impact, flexural, and hardness properties of AISI 1018 mild steel using Gas Metal Arc Welding (GMAW) were investigated. In this research, specimen sizes of 500 mm x 10 mm x 10 mm and 5.5 mm x 10 mm x 10 mm were fabricated according to ASTM standards. In addition, a v-groove had been prepared at …
Published in International Journal of Manufacturing and Materials Processing · Vol. 8, Issue 1, 2022 · pp. 6–13 Read article
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An Overview on Metal Processing using Machine Learning
Abstract: Metalworking, which is an important part of modern industry, includes a wide range of steps, such as shaping and casting the metal, machining it, and riveting it. The industry has always relied on trial and error and other empirical methods, but machine learning (ML) is now causing a big change. It is expected that this change will lead to higher production, better product quality, and better use of resources. The …
Published in International Journal of Manufacturing and Materials Processing · Vol. 12, Issue 1, 2026 · pp. 43–53 Read article
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Assessing the Impact of Heavy Metal Contamination on Okra: A Study of Zinc and Cadmium Bioaccumulation
Abstract: Recently, concerns have been raised regarding environmental contamination by heavy metals, which pose significant risks to agriculture and human health. Industrial and domestic waste discharge into the environment contributes to the accumulation of toxic metals such as cadmium (Cd) and zinc (Zn) in soil and water. These metals, when absorbed by plants, lead to physiological, morphological, and biochemical disruptions, including chlorosis, necrosis, and reduced crop yield. Furthermore, excessive metal concentrations …
Published in International Journal of Analytical and Applied Chemistry · Vol. 11, Issue 2, 2025 · pp. 22–29 Read article
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Analysis of Surface Finish of Different Metallic Materials
Abstract: This study investigates surface processing techniques aimed at achieving a surface roughness (Ra) value of < 2.5 for various materials including gray iron, steel, pure copper, aluminum, and brass. Surface roughness plays a crucial role in determining the functional and aesthetic properties of machined components. The attainment of a specific Ra value demands precise control over machining parameters and selection of appropriate finishing processes. For steel, machining operation grinding followed …
Published in International Journal of Mechanics and Design · Vol. 10, Issue 1, 2024 · pp. 1–12 Read article
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Synthesis, characterization of Schiff base and its pH metrically studies of transition metal complexes of N'-(3, 4-dihydroxybenzylidene) isonicotinohydrazide.
Abstract: Schiff reaction is one of the versatile reaction widely used in organic synthesis focused on the discovery & development of isoniazide Schiff base derivative N’(3,4-Dihydroxy benzylidene isonicotinohydrazide) have been reported in presence of 0.01g molecular iodine catalyst stirring give fast product & good yield. The synthesized compound is characterized by FTIR & H-NMR analysis. For the development of coordination chemistry Schiff base & metal ion having played most important role, …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 6, Issue 2, 2020 · pp. 39–47 Read article
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Recent advances in utilization of wide band gap metal oxides for photocatalysis of organic waste
Abstract: Water cleaning has become a major challenge in the current scenario with huge amounts of industrial wastes being accumulated in the water bodies over the years. Traditional chemical, physical and biological processes for treating wastewater containing textile dye have disadvantages such as high cost, high energy requirement and generates secondary pollution during treatment process. The progressive oxidation processes technology has been appealing growing attention for the decomposition of organic dyes. …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 3, Issue 2, 2017 · pp. 1–9 Read article
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An Evaluation of Cracks Repairing Techniques in Metals
Abstract: Cracks are surface that develop in a material. Dissemination energy derived from mechanical, thermal, chemical, and metallurgical effects, or a grouping of these may affect crack beginning and growth. Numerous types of cracks exist in metals and can be characterized as grinding, solidification, cooling, crater, machining tears, plating, centerline, pickling, heat treatment, fatigue, creep, stress corrosion and hydrogen cracks. Cracks can grow and lead to complete fracture of the component …
Published in International Journal of Composite Materials and Matrices · Vol. 3, Issue 1, 2017 · pp. 9–15 Read article
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Study of Heavy Metal ion adsorption from Synthetic Wastewater with the help of biomass and analysis of Mathematical Model
Abstract: The biofilm matrix is a mixture of secreted polymers, metabolites and nutrients ingested, lysis solution products, and even particle debris. This matrix, which is polyanionic by nature, is essential for the activated carbon of metal cations. In this study, the heavy metal adsorption mechanism in biofilms is modelled in one spatial dimension. The numerical method is a free-boundary value issue for nonlinear parabolic and quadratic partial differential equations. Parabolic equations …
Published in International Journal of Polymer Science and Engineering · Vol. 8, Issue 1, 2022 · pp. 45–56 Read article
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A Review of Recent Developments in Solid State-Based Metal Additive Manufacturing: Friction Stir Additive Technique
Abstract: In the age of machines, the whole industry needs light-weight and high strength for lighter devices, machines, etc. The core aerospace industry needs lighter materials for satellites and rockets. Friction Stir Additive Technology (FSAT)represents an innovative approach aimed at leveraging the principles of layered build (AM) layer by layer using solid state (FSW) friction stir welding technology. These represent a particular class of friction-based additive technology (FAT) and can easily …
Published in International Journal of Manufacturing and Materials Processing · Vol. 8, Issue 2, 2022 · pp. 17–25 Read article
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Advanced Magnesium-Based Metallic GlassComposites for Biomedical Implant Applications: AMachine-Learning-Informed Approach
Abstract: Magnesium-based bulk metallic glasses (Mg-BMGs) combine strength, low density, and tunable degradability. Their amorphous matrix has a small plastic process zone. This zone is only about 4 μm wide. A small process zone keeps most glasses brittle. Adding a second phase is the best fix. This chapter extends Mg-BMGs to true composites. We call these Mg-based bulk metallic glass composites, or Mg- BMGCs. The chapter covers matrix engineering and interfacial …
Published in International Journal of Composite Materials and Matrices · Vol. 12, Issue 2, 2026 · pp. 48–65 Read article
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How Heavy Metal Minerals Affect the Quality of Soil and Groundwater
Abstract: Heavy metal minerals polluting soil and groundwater is becoming a major environmental issue because these components are not biodegradable and last a long time. This study examines the degree to which heavy metals, including lead (Pb), cadmium (Cd), arsenic (As), mercury (Hg), and chromium (Cr), affect the chemical and physical characteristics of soil and groundwater in regions impacted by industrial, agricultural, and mining operations. Soil and water samples were obtained …
Published in International Journal of Environmental Chemistry · Vol. 11, Issue 2, 2025 · pp. 9–20 Read article
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EFFECTIVE USE OF ADSORPTION TECHNIQUE FOR REMOVAL OF HEAVY METALS FROM WATER A Review
Abstract: Abstract- Presence heavy metals are not acceptable in water so, this study presents removal of heavy metals from water with the use of different adsorbents, particularly agricultural waste materials. This is to develop effective and economical water treatment solutions. The hazardous effects of presence of heavy metal in water causes great risks to source of water and health issues to human. In regions like Bhandara and Ambazari Lake in Nagpur, …
Published in International Journal of Water Resources Engineering · Vol. 11, Issue 2, 2025 · pp. 7–13 Read article
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Cognitive Metallurgy: A Study on Microstructure and Energy Efficiency in High-Temperature Alloying via Sensor Fusion and Deep Reinforcement Learning
Abstract: Background Traditional high-temperature metallurgical processes, such as continuous casting and specialty alloy synthesis, are characterized by high energy consumption, stochastic variability, and reliance on post-process defect inspection. The inability to precisely monitor, model, and predict the real-time thermal, chemical, and mechanical state of molten metal and cooling substrates results in significant material waste and inconsistent microstructural integrity. Methodology This study introduces a novel framework for Cognitive Metallurgy utilizing an integrated …
Published in International Journal of Metallurgy and Alloys · Vol. 11, Issue 2, 2025 · pp. 27–36 Read article