The reduction behavior of SnO2 powder has been investigated in the temperature range of 900-1200 K under ethanol flow. Scanning electron microscopy, x-ray diffraction, and mass measurement techniques were used to characterize ...

The present study was conducted to investigate the effectiveness of problem-based learning instruction versus a traditional approach on undergraduate students' understanding of electromagnetic field and magnetism concepts. ...

OBJECTIVE: Colistin is a cationic polypeptide antibiotic with a cyclic structure that belongs to the polymyxin group. It was banned from clinical use because of its significant renal side effects, such as nephrotoxicity. ...