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Hollow magnetite microspheres have been synthesized by a simple process through a template-free hydrothermal approach. Hollow microspheres were surface modified by coating with a silica nanolayer. Pristine and modified hollow microparticles were characterized by field-emission electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray(More)
Monodisperse hollow magnetite microspheres were successfully synthesized by an one-step process through a template free hydrothermal approach employing simultaneously a mixture of FeCl 3 ·6H 2 O and ferrocene as precursor and a propylene glycol-isopropanol mixture as solvent. The morphologies and properties of the magnetite microspheres were characterized(More)
BACKGROUND Flumazenil is a competitive benzodiazepine receptor antagonist, reverts the sedation effects of benzodiazepines and its effect on electroencephalographic (EEG) patterns is controversial. The purpose of this study was to describe flumazenil's effect on EEG patterns of patients undergoing conscious sedation. METHODS Ten voluntary patients, aged(More)
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