主题词：Hydrogels: synthesis, properties, applications; Synthesis and biological activity; Geochemistry and Geologic Mapping; Nanomaterials for catalytic reactions; Synthesis and Characterization of Heterocyclic Compounds; Polymer Surface Interaction Studies; Extraction and Separation Processes; Geological Modeling and Analysis; Metal complexes synthesis and properties; Catalysis and Hydrodesulfurization Studies; Nanocomposite Films for Food Packaging; Advanced Cellulose Research Studies; Advanced Drug Delivery Systems; Magnetic Properties and Synthesis of Ferrites; Photochemistry and Electron Transfer Studies; Luminescence and Fluorescent Materials; Catalysis and Oxidation Reactions; Polymer Synthesis and Characterization; Nanoparticle-Based Drug Delivery; Carbon Nanotubes in Composites; Catalytic Processes in Materials Science; Membrane Separation Technologies; Corrosion Behavior and Inhibition; Conducting polymers and applications; biodegradable polymer synthesis and properties