Particle size 7 nonhuman 7 particle size 7 chemistry 6 Article 5 Scanning electron microscopy 5 controlled study 5 Fourier transform infrared spectroscopy 4 Nanoparticles 4 Particle Size 4 Particle swarm optimization (PSO) 4 male 4 nanoparticle 4 Charcoal 3 Coal bottom ash 3 Compressive strength 3 Costs 3 Drug Carriers 3 Particle size analysis 3 Particle swarm optimization 3 Sustainable development 3 animal experiment 3 animal model 3 article 3 drug carrier 3 human 3 in vitro study 3 in vivo study 3 infrared spectroscopy 3 metabolism 3