Nitromethane has many applications, such as in racing, a gasoline fuel additive, and monopropellant. Despite large number of studies the small size molecule, combustion chemistry nitromethane is still not well understood. To improve models, pyrolysis (CH3NO2) was investigated experimentally shock tubes micro flow reactor with controlled temperature profile (MFR), under dilute conditions. Severa...

introduction: the aim of this study was to compare the antimicrobial effects of mtad, sodium hypochlorite (naocl) and their combination on endodontic micro-organisms. materials and methods: zone of inhibition (zi) and minimum inhibitory concentration (mic) were the techniques used. in zi technique blood agar plates were inoculated with organisms, paper discs were soaked with irrigants and maxim...

STATEMENT OF THE PROBLEM Nanosilver particles have the potential to serve as a bactericidal agent because of the inherent antimicrobial influences of silver ion. The literature confirmed that specific micro-organisms, especially streptococci, have an important role as an etiological factor for caries. PURPOSE The aim of this study was to evaluate the antimicrobial effect of conventional and n...

The measurement of millimetre and micro-scale features is performed by high-cost systems based on technologies with narrow working ranges to accurately control the position of the sensors. Photogrammetry would lower the costs of 3D inspection of micro-features and would be applicable to the inspection of non-removable micro parts of large objects too. Unfortunately, the behaviour of photogramme...

introduction: transhiatal esophagectomy is a widely accepted approach for palliative resection of subcarinal esophageal cancers. this study was designed to evaluate the necessity of routine thoracostomy tube insertion in this technique.  methods: this descriptive study was conducted on 123 consecutive patients with esophageal cancers undergoing transhiatal esophagectomy from march 2001 to febru...