Haemophilus influenza Klebsiella pneumonia ANTIBACTERIAL ACTIVITY Ames test Antimicrobial properties Article EPIDEMIOLOGY ESCHERICHIA-COLI Haemophilus influenzae Klebsiella pneumoniae MODIFIED HYDROTHERMAL NANOTITANIA NANOCOMPOSITE Nanoparticles extract SILVER NANOPARTICLES THERAPY X ray diffraction antibacterial activity antiinfective agent antimicrobial activity antimicrobial properties bacteremia bacterial growth controlled study dilution dimethyl sulfoxide meningitis mortality nanoparticles extract nanotitania extract scanning electron microscopy