hazardous chemicals may enter the body by inhalation, ingestion, injection or dermal absorption. these exposure routes constitute the overall exposure burden on the body. most occupational exposure studies have focused on measurement of the concentration of air-borne contaminants and other possible routes of exposure are often overlooked. several studies have already highlighted the importance ...

background and purpose:  student assessment is an important issue in medical education. it is necessary to use objective, valid and reliable assessment methods that are appropriate to the learning objectives and domain.the objectives of this study were 1- development of the dops test (direct observation procedural skills) and identification of its validity, reliability and acceptability. 2- eva...

introduction: although logbook is a useful tool in learning and assessment of the student, its use in the education of undergraduate dentistry students is not well-established. the present study was conducted to assess the effect of logbook as a study guide and an effective method for assessment of the students in the fixed prosthesis course. methods: this quasi-experimental study was performed...

OBJECTIVE To propose a standard for the conduct of visually directed transrectal high-intensity focused ultrasound (HIFU) and to offer a formal description of the changes observed on B-mode ultrasonography (US) during this procedure. We describe our early experience of using two different treatment methods; algorithm-based HIFU and visually directed HIFU for the treatment of organ-confined pros...