主题词：Phytochemicals and Antioxidant Activities; Essential Oils and Antimicrobial Activity; Corrosion Behavior and Inhibition; Heavy metals in environment; Radioactive element chemistry and processing; Free Radicals and Antioxidants; Toxic Organic Pollutants Impact; Computational Drug Discovery Methods; Phytochemistry and Biological Activities; Water Quality and Pollution Assessment; Protein Interaction Studies and Fluorescence Analysis; Heavy Metals in Plants; Psidium guajava Extracts and Applications; Adsorption and biosorption for pollutant removal; Science Education and Pedagogy; Nanoparticles: synthesis and applications; Analytical chemistry methods development; Theoretical and Computational Physics; Fermentation and Sensory Analysis; Heavy Metal Exposure and Toxicity; Analytical Chemistry and Chromatography; Trace Elements in Health; Radioactivity and Radon Measurements; Fungal Biology and Applications; Municipal Solid Waste Management