PURPOSE To assess the repeatability and reproducibility of central corneal thickness (CCT) measurements obtained by combined scanning-slit/Placido-disc topography (Orbscan II; Bausch & Lomb, Rochester, NY) after laser in situ keratomileusis (LASIK) and to compare the results with another noncontact method, specular microscopy (SP-2000P; Topcon, Tokyo, Japan). METHODS To analyze intrasession r...

background: alcohol use disorders (auds) has been recently prioritized as a health problem in iran. the alcohol use disorders identification test (audit) is an easy-to-use diagnostic tool for excessive drinking. this study was designed to assess the validity and reliability of the persian version of audit questionnaire. methods: participants were 70 individuals with aud (study group) and 70 non...

background: the effect of poor psychosocial work conditions on health status has widely been discussed in occupational literature. job content questionnaire (jcq) is a widely accepted instrument for evaluation of psychosocial work conditions. objective: to determine the reliability and validity of persian version of jcq. methods: the questionnaire was translated into persian and back translated...

background: the effect of health status on productivity has widely been studied and discussed in literature. valid and reliable tools are needed to evaluate the levels of health and productivity and provide detailed information, before any intervention is implemented. world health organization health and work performance questionnaire (hpq) is a widely used instrument in estimating the workplac...

This paper presents an application of a linear model with correlated errors to the assessment of the precision of acoustic rhinometry in clinical medicine. The design of the reproducibility study involved 20 healthy subjects measured by five investigators with three replicate measurements of four variates taken from the right and left nasal cavities, altogether 2400 measurements. The parametric...

PURPOSE To evaluate repeatability and reproducibility of anterior corneal power measurements obtained with a new corneal topographer OphthaTOP (Hummel AG, Germany) and agreement with measurements by a rotating Scheimpflug camera (Pentacam HR, Oculus, Germany) and an automated keratometer (IOLMaster, Carl Zeiss Meditec, Germany). METHODS The right eyes of 79 healthy subjects were prospectively...

A new method was introduced for frothing characterization of flotation frothers. Method uses water recovery to develop a new frothability index named water recovery index (WRI). New index was determined for some commercial frothers and results were compared with dynamic frothability index (DFI). Results showed that water recovery index values follow the order of A-65 13016 s/mol > DF-250 6292.4...

Due to the importance of super-hydrophobic silica aerogel powder as a material in the field of energy saving, its wettability in the presence of various surfactants was investigated. One anionic and two non-ionic surfactants with different molecular structures were used as wetting and dispersing agents. Wetting properties of the aerogel powders were investigated by the contact angle measure...