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458 articles for “concentration”
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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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Thermo-Acoustic Investigation of Molecular Interactions in Aqueous Solutions of L-Histidine at Different Temperatures
Abstract: The present study investigates the acoustic and thermodynamic behavior of aqueous solutions of L-Histidine across a concentration range of 0.01 m to 0.1 m and temperatures varying from 293.15 K to 318.15 K in 5 K intervals. Ultrasonic velocity (μ), density (ρ), and viscosity (η) measurements wereconducted with high precision to understand the solution behavior under different thermal conditions.Temperature constancy during measurements was ensured using a refrigerated circulatory bath withwater …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 11, Issue 2, 2025 · pp. 9–17 Read article
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Synthesis and Antifungal Activity of Some Bis-1,4-(3-Mercapto-5-Oxymethyl-1,2,4-Triazole-5-yl) Benzene & Bis-1,4-(5-Amino-2-Oxymethyl-1,3,4-Thiadiazole-2-yl) Benzene
Abstract: Heterocyclic compounds are well known for their pharmacological application. Among all N-containing heterocyclic compounds, triazole emerges superior application. Triazole have two core structures 1,2,4-triazole and 1,2,3-triazoles. They both can give a broad range of substitutions with their structures, due to these characteristics, they have significant biological applications. They are also important in organocatalysis, agrochemicals, and material science. We aim to explore suitable molecular modifications in thiadiazole and triazole derivatives to …
Published in International Journal of Agrochemistry · Vol. 11, Issue 2, 2025 · pp. 9–15 Read article
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Evaluation of Groundwater Quality Parameters Through Physico-Chemical Analysis in the Puducherry Region
Abstract: Abstract The evaluation of the quality of drinking water in Puducherry state and its surrounding regions primarily concentrated on groundwater sources. Nine specimens were examined using standardized techniques, and their outcomes were contrasted with national standards. Nevertheless, on a worldwide scale, the quality of water is facing a growing danger from unwelcome alterations in its physical, chemical, and biological characteristics. Population growth, industrialization, fertilizer usage, and mining activities are major …
Published in International Journal of Water Resources Engineering · Vol. 11, Issue 1, 2025 · pp. 24–32 Read article
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Synthesis of Groundnut Shell Composites: Exploring Chemical Reactions for Particle Treatmentand Modification
Abstract: The utilization of groundnut shell particles as a sustainable and economical filler in composite materials has garnered significant interest in recent years. This manuscript presents an in-depth analysis of the chemical processes involved in synthesizing groundnut shell-based composites, with a focus on the treatment and modification of the particles to enhance their compatibility and functional properties. The study investigates various chemical reactions, including acid and alkali treatments, aimed at altering …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 10, Issue 2, 2025 · pp. 27–32 Read article
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Influence of Treatment on Soil Potassium: A Comparative Study Using Mango Leaf and Bitter Leaf
Abstract: This research investigates the influence of two organic amendments, Mango leaf and Bitter leaf, on the potassium content in swampy and clay soils. Potassium plays a crucial role in supporting microbial activity during bioremediation, making it an essential nutrient in hydrocarbon-contaminated environments. The study explores the temporal variation in potassium concentrations in soils treated with powdered Mango leaves, Bitter leaves, yeast, and NPK fertilizer over a period of 84 days. …
Published in International Journal of Environmental Chemistry · Vol. 11, Issue 1, 2025 · pp. 71–75 Read article
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Pollutant Emissions, Performance and Combustion Characteristics in Diesel Engines at High Altitudes: A Review
Abstract: At high altitudes, majority of the engines tend to have less power output since the increase in altitude which directly results in lack of oxygen content present in the atmosphere. This paper presented to come up with a systematic work carried out on the existing research efforts regarding the effects of altitude on engines, the changes or modifications that can be applied for the enrichment of oxygen, the design parameters, …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 11, Issue 1, 2025 · pp. 37–50 Read article
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Diluted Magnetic Semiconductor Nanoparticles: AI Enabled Ferromagnetic Resonance Imaging and Immunotherapy
Abstract: Dilute magnetic semiconductors are attractive areas of specialty in semiconductor technology, material engineering, and condensed matter system. The model employed to manipulate the Hamiltonian of the system is the Heisenberg Model. By considering a cloud of electron gas and employing equation of state, the fractions of demagnetization factors were determined. Besides, the thermodynamic relation between magnetization and temperature is determined by analyzing the Helmholtz free energy. In this research, some …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 11, Issue 1, 2025 · pp. 20–31 Read article
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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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Some Thermal Properties of Banana (Musa acuminata) Peels Bonded Waterlily (Nymphaea lotus Linn.) Briquettes
Abstract: The purpose of the study was to determine how the amount of binder affected the ignition time and rate of burning of fuel briquettes made from a blend of banana (Musa acuminata) and waterlily (Nymphaea lotus Linn.) peels at varying binder ratios (0, 20, 40, 60, and 80% by weight of each feedstock). Before the briquettes were expelled for additional research, the homogenous feedstock was compressed by a hydraulic press …
Published in International Journal of Renewable Energy and its Commercialization · 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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An Analysis of the Mechanical Properties of Polyethylene Composites Reinforced with Short Vetiver Fibers
Abstract: Synthetic fibers (such as carbon, glass, ceramic fibers, etc.) are a cause of environmental concern, so natural fibers (such as vetiver, calotropis gigantea, flax, hemp, jute, etc.) are extensively used. In this study, the compression molding process was used to improve low-density polyethylene (LDPE) matrix composites reinforced with vetiver fiber (VF). Experiments were conducted by varying VF length, VF content, and fiber treatment time. The composites' static mechanical characteristics, including …
Published in International Journal of Composite Materials and Matrices · Vol. 11, Issue 1, 2025 · pp. 1–13 Read article
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Surface Modification and Performance Evaluation of Biologically Degummed Lady's Finger Bast Fibers
Abstract: This research aims to investigate the physicomechanical characteristics of biologically degummed lady's finger bast fiber (LFF) and to walk through the entire process of turning LFF into a commercial cellulosic fiber that can be used globally in a variety of textile applications, including carpets, oil and liquid absorption, packaging, basic textile products, coarse ornamental textile products, geo-textiles, and reinforcements in polymer matrix composites. This article describes the application of different …
Published in International Journal of Polymer Science and Engineering · Vol. 11, Issue 1, 2025 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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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
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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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Evaluations of Treatment Performance of Tangerine and Cashew Leaves in TPH Removal from Contaminated Swampy and Clay Soils
Abstract: This study evaluates the effectiveness of two plant-based treatments, Tangerine (Citrus reticulata) and Cashew (Anacardium occidentale) leaves, in the bioremediation of Total Petroleum Hydrocarbons (TPH) from polluted swampy soil. The performance of these treatments was assessed over an 84-day period using 100g of each treatment. The results demonstrated significant degradation of TPH, with Tangerine leaf showing a slight edge over Cashew leaf in the remediation process of crude oil- contaminated …
Published in International Journal of Green Chemistry · Vol. 11, Issue 2, 2025 · pp. 29–34 Read article
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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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Nanomaterials via Green Synthesis: Insights into Biocompatibility and Biotechnological Applications
Abstract: This review critically examines recent advances in the green synthesis of nanomaterials (NMs) and their diverse biological applications, with a focus on antimicrobial, antioxidant, anticancer, and anti-inflammatory properties. The reviewed studies evaluated key characteristics of green-synthesized NMs, including their size, shape, and concentrations, as assessed in both in vitro and in vivo biological models. Compared to traditional chemical methods, green synthesis demonstrated superior efficacy, enhanced biocompatibility, and reduced toxicity. For …
Published in International Journal of Green Chemistry · Vol. 11, Issue 1, 2025 · pp. 1–16 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