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348 articles for “COA”
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Tropospheric Variation of Point Refractivity Gradient and Geo-climatic Factor over a Coastal Location in Tropical Nigeria
Abstract: Accurate assessment of refractivity gradient and Geo-climatic factor is crucial for maintaining reliable radio signal propagation in clear-air environments. These parameters are essential for determining the fade margin necessary to ensure a stable and effective wireless radio link, given the unstable nature of the atmosphere through which the signals travel. It is crucial to have accurate knowledge of these characteristics, particularly at microwave antenna heights of around 70 meters, in …
Published in Journal of Remote Sensing & GIS · Vol. 15, Issue 2, 2024 · pp. 28–42 Read article
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Exploring Effective Methods of Seafood Catching in Gujarat: A Review
Abstract: This review explores the effective methods of catching seafood in Gujarat, India, a region renowned for its rich coastal heritage and thriving fishing communities. Drawing on traditional techniques, community participation, innovation, and socioeconomic impact, the paper provides a comprehensive overview of the intricacies surrounding seafood catching in Gujarat. Traditional fishing methods, deeply rooted in cultural practices, coexist with modern technologies and sustainable initiatives, reflecting the adaptability and resilience of coastal …
Published in Research & Reviews : Journal of Ecology · Vol. 14, Issue 1, 2025 · pp. 1–5 Read article
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Fabrics and medical devices (catheters) coated with Zn doped CuO nanoparticles kills micro-oganisms and provide healthy environment
Abstract: These days, drug resistance by microorganisms is a major challenge in the field of medicinal chemistry. Most of the familiar antibiotics turnout to be of no impact in curbing the proliferation of microorganism (bacteria, virus and fungus). To address the issue of multi-drug resistance (MDR) and extremely drug resistance (EDR) in microorganisms that cause various health complications, like the dental decay, biofilm formation, foul smell, delayed wound healing, aggravation of …
Published in Journal of Catalyst & Catalysis · Vol. 12, Issue 1, 2025 · pp. 1–9 Read article
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Integrated Remote Sensing Indices for Assessing Pre-Monsoon Water Scarcity Vulnerability in a Semi-Arid Coastal Ecosystem: A Case Study of Barda Wildlife Sanctuary, Gujarat, India
Abstract: Freshwater availability fundamentally shapes the structure and function of dryland ecosystems, where evapotranspiration exceeds precipitation for most of the year. Protected areas in semiarid regions face intensifying hydrological stress from climate variability, growing wildlife populations, and resident human communities, yet systematic spatial assessments of water scarcity remain scarce for many critical habitats. The Barda Wildlife Sanctuary in coastal Gujarat, India, has recently become a secondary home for the endangered Asiatic …
Published in Journal of Remote Sensing & GIS · Vol. 17, Issue 2, 2026 Read article
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SYNTHESIS, CHARACTERIZATION AND BIOMEDICAL APPLICATIONS OF A SILVER NANOPARTICLE-COATED CHITOSAN–FUCOIDAN POLYMER NANOCOMPOSITE LOADED WITH PERSEA AMERICANA LEAF EXTRACT
Abstract: Consuming a natural composite of Persea americana (Avocado) leaf extract and a chitosan and fucoidan form a biodegradable biopolymer matrix–polymer nanocomposite with biomedical applications, this study explored a potential therapeutic method. GC-MS and UV spectroscopy were used to describe the aqueous leaf extract, which was verified by phytochemical screening to contain flavonoids, tannins, phenols, terpenoids, and alkaloids. The chitosan–fucoidan biodegradable polymer matrix served as a biocompatible stabilizing and encapsulating carrier …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 Read article
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Experimental Analysis of Cutting Forces Under Different Machining Parameters and Carbide Inserts During Turning of Hardened AISI 4340 Steel
Abstract: Turning of hardened materials with an advanced coated carbide insert has numerous advantages over the grinding process, e.g., reduced process cost, high material removal rate, and less environmental concern due to the elimination of the cutting fluid. Process parameters in conventional machining operations like cutting speed, feed, and depth of cut play the most crucial role behind the generation of heat which also leads to microstructural changes, improved tool life, …
Published in Journal of Polymer & Composites Read article
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Stress Level and Coping Strategies Among the Students Preparing for Common Entrance Test in Coaching Classes of a Selected City
Abstract: Stress is a natural response of your body to any type of demand, whether it is a positive or negative experience. When individuals experience stress due to external factors, their bodies release chemicals into the bloodstream, which can be beneficial if the stress is caused by physical danger. However, if the stress is a result of an emotional situation and there is no way to channel this additional energy and …
Published in International Journal of Emergency and Trauma Nursing and Practices · Vol. 1, Issue 1, 2023 · pp. 13–21 Read article
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Analysis of Physical Properties of Polyethylene Terephthalate Coated Aggregates used in Bituminous Concrete Mixes
Abstract: The main cause of climate change that the world has been facing for several years is burning of plastic waste in open air. To contribute to solution of this problem, an investigation was carried out with utilization of plastic waste in bituminous mixtures used in flexible pavement.With varied amounts of Polyethylene Terephthalate (0%, 6%, 6.5%, 7%, 7.5%, and 8%) of asphalt content, variousdesirable properties of aggregates required for bituminous mix …
Published in Journal of Polymer & Composites · Vol. 12, Issue 6, 2024 · pp. 206–213 Read article
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Impact of Fly Ash Pollution on Quality of Agricultural Soils Around Thermal Power Station
Abstract: The coal-fired Khaparkheda Thermal Power Station (KTPS) and its fly ash pond in Nagpur District, Maharashtra, India has been responsible for serious fly ash pollution incidents of agricultural soil. The present study was carried out on the quality of soil samples around the fly ash pond and KTPS. The physicochemical and chemical characteristics of soil samples were observed to be affected due to fly ash pollution. The fertility of soil …
Published in Research & Reviews : Journal of Ecology · Vol. 14, Issue 1, 2025 · pp. 6–17 Read article
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Environmental Analysis of Marine Sediment Properties From Diverse Ecological Zones Of Pondicherry, India: A Study Supporting SDG 15 For Coastal Ecosystem Conservation
Abstract: The Research regarding the ecosystem examines the impact of anthropogenic activities on soil conditions and water resources in the Vaigai reservoir catchment area, aligning with SDG 15's targets for sustainable terrestrial ecosystem management. The research investigates how industrialization, urbanization, and modern agricultural practices affect soil properties and water resource quality. Physical parameters (moisture content, specific gravity, plasticity) and chemical properties (pH, electrical conductivity) were analyzed, along with soil nutrient levels …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 15, Issue 2, 2025 Read article
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Exploring the Relationship Between Disseminated Intravascular Coagulation and Waterhouse–Friderichsen Syndrome
Abstract: Waterhouse–Friderichsen syndrome was first identified as a distinct clinical entity by Little in 1901. He described four cases from his own observations and, after examining existing literature, identified eight additional cases that he considered previously unclassified. One case in his report may have involved purpura resulting from a different cause. The knowledge of this unusual disorder developed slowly from several significant clinical observations and case reports during the first two …
Published in Research and Reviews: A Journal of Medicine · Vol. 16, Issue 2, 2026 · pp. 45–49 Read article
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Screening of Newer Phytoconstituents on Novel Enzymes for their Biological Activity
Abstract: Background: Hyperlipidemia and gout are prevalent metabolic disorders significantly impacting global health. The xanthine oxidase and HMG-CoA reductase pathways play pivotal roles in the pathophysiology of these conditions. This study explores the potential of natural phytoconstituents—daidzein, resveratrol, and genistein—as dual inhibitors for these enzymatic targets, offering insights into innovative therapeutic strategies. Aim: To evaluate the potential of natural phytoconstituents—daidzein, resveratrol, and genistein—as dual inhibitors of xanthine oxidase and HMG-CoA reductase …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 16, Issue 1, 2025 · pp. 81–86 Read article
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Electrochemical Evaluation of Corrosion Behavior in Industrial Alloys Under Acidic and Marine Conditions
Abstract: Corrosion represents a spontaneous physicochemical transformation in which metals revert to their more stable thermodynamic state, typically oxides, hydroxides, or sulfides, as a result of interaction with environmental elements. Rather than being a simple surface reaction, corrosion is a complex electrochemical phenomenon that significantly influences the durability, reliability, and performance of metallic structures across industrial, marine, and domestic sectors. The consequences extend beyond material degradation, contributing to substantial economic losses, …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 13, Issue 1, 2026 · pp. 24–36 Read article
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Innovative Porcelain Insulators: Prolonged Durability and Anti-Contamination Efficiency via Nano-TiO2 Photocatalyst Integration
Abstract: Porcelain has long been a critical material in high-voltage electrical insulation due to its exceptional mechanical, thermal, and dielectric properties. However, environmental contamination and material degradation over time pose significant challenges to its durability. This study investigates the integration of nano-sized titanium dioxide (TiO2) photocatalyst coatings on porcelain insulators to enhance their performance and prolong their operational lifespan. Local clay compositions were analyzed, and a comparative study of untreated and …
Published in International Journal of Crystalline Materials · Vol. 1, Issue 2, 2024 · pp. 18–23 Read article
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Corrosion and Corrosion Protection of Cast iron due to Bio-organism
Abstract: Cast iron is a high tensile strength metal. It is generally used for making tools, pipe fitting, electrical fitting equipment and rail track. It interacts with corrosive substances to develop electrochemical cell on their interface. Corrosive substances are acids, bases, salts, bio-wastes, particulates and pollutants. These substances produce hostile medium for materials. These harmful wastes discharge by industries, households, agricultural, urbanization, development of infrastructure, construction works, thermal power stations, hydropower, …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 16, Issue 2, 2025 · pp. 105–114 Read article
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A Concise Overview of Recent Developments and Uses in Nano-Silica and Nanoparticles Encased in Silica
Abstract: Nano-silica and silica-coated nanoparticles have gained significant attention lately due to their exceptional chemical and physical properties, including a high surface area-to-volume ratio, adjustable porosity, thermal and chemical stability, biocompatibility, and ease of surface modification. These characteristics make them versatile materials applicable in various scientific and industrial sectors. Their ability to control particle size, shape, and surface traits allows them to be effectively utilized in catalysis, drug delivery, biosensing, and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 696–704 Read article
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Optimal Dosage of Pumice in Lightweight Aggregate based Concrete
Abstract: Lightweight concrete (LWC) is a pioneering solution in the construction sector, characterized by its unique composition and versatile applications. Engineered with lightweight aggregates and additives, LWC achieves a significant reduction in dry density compared to conventional concrete, making it 23% to 87% lighter, with densities ranging from 300 to 1,840 kg/m³. This reduced weight makes LWC ideal for projects requiring load minimization, such as high-rise buildings and prefabricated elements. A …
Published in International Journal of Minerals · Vol. 1, Issue 1, 2024 · pp. 23–32 Read article
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Self-Healing Thin Films: Paving the Way for Smart, and Sustainable Corrosion Protection
Abstract: Corrosion is one of the serious problems that industries and infrastructures of every type face, ranked among such threats as huge economic losses and concerns to global safety. Recent developments in the area of self-healing thin films make them a really promising innovation for enhancing corrosion protection. This review considers the development, mechanisms, and applications of self-healing thin films. Detailed here are intrinsic and extrinsic self-healing strategies oriented toward chemical …
Published in International Journal of Crystalline Materials · Vol. 2, Issue 1, 2025 · pp. 22–45 Read article
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Enhancement of the Life of Helical Spring Systems
Abstract: Helical springs are essential mechanical factors considerably employed in automotive, aerospace, and artificial systems because of their capability to store and release energy, absorb shock, and sustain repeated weight cycles. The performance, responsibility, and durability of these springs play a vital part in ensuring the effectiveness and safety of the entire system in which they are integrated. Over time, numerous researchers have focused on strategies to enhance the service life …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 12–24 Read article
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Design and Development of an Automated Robotic Algorithm for Blasting, Painting, and Barnacle Cleaning of Offshore Structures
Abstract: Marine surface maintenance tasks such as barnacle removal, abrasive blasting, and protective painting are traditionally carried out using manual methods that are labor-intensive, hazardous, and prone to variability in quality. These challenges are particularly significant for offshore structures, where harsh environmental conditions and restricted accessibility increase operational risks and maintenance costs. This paper presents the design and evaluation of an autonomous robotic system for automated surface preparation and coating of …
Published in Journal of Offshore Structure and Technology · Vol. 13, Issue 1, 2026 · pp. 1–12 Read article