Background and Aim: Because of complexity in root canals, irrigating solutions are needed in addition to mechanical instrumentation for thorough cleansing of the root canal system. This in-vitro study was designed to determine the inhibitory effect of arginine, protamine, and aqueous extracts of green tea and aloe vera against Enterococcus faecalis (E. faecalis), which causes endodontic failure...

background and objectives: klebsiella pneumoniae , one of the important causes of nosocomial infections, is the most common extended spectrum β-lactamases (esbls) producing organism. esbls are defined as the enzymes capable of hydrolyzing oxyimino-cephalosporins, monobactams and carbapenems. the aims of this study were to identify esbl-producing k. pneumoniae isolates and detect their antibioti...

introduction many studies have shown epidemiological links between strains isolated in tap water, and those isolated from patients. molecular methods linked to pcr are more reliable and faster for identification of             non- tuberculous mycobacteria(ntm). in this study molecular methods were used for identification and typing of ntm. materials and methods five hundred ml of 85 water samp...

Introduction: The use of e-learning and computer-aided methods is rapidly on the rise in medical and nursing education. Therefore, given the conflicting findings and lack of systematic clinical trials on comparison of the effects of e-learning and traditional methods in nursing education, this study aimed to assess the effects of offline e-Learning on cognitive learning (levels of knowledge, co...