background: for planning in health,preventing and representing valuable dentistry services, we need to identify and evaluate the information on the status of individuals' dental hygiene and health. in this examination, evaluating dental health which is one of hygienic main and key problems has been conducted according to world's standards in correction center of tehran province in 200...

conclusions according to the results, it seems that more planning and implementation of projects is required to strengthen the axes of the joint commission regarding accreditation of hospitals and attraction of medical tourists to these centers, especially foreign tourists. researchers are recommended to pay special attention to the university of medical sciences of two provinces for the establ...

Objective: Quantitative analysis of the quality of nuchal translucency (NT) measurements. Methods: This is a retrospective single-center study. NT was measured according to the Fetal Medicine Foundation (FMF) criteria by 20 trained obstetricians (October 2003-November 2009). The performance of NT measurements was analyzed with regard to several quality control standards. Accuracy according to e...

background: the effective size of the end grain of horizontal roughing filters (hrfs) is larger than 2 mm. this study aimed to examine the efficiency of hrfs in removing nitrate, phosphate, and chemical oxygen demand (cod) from effluent of a wastewater stabilization pond. methods: this experimental study was conducted in 2013. the pilot project was transferred to the karaj wastewater treatment ...

Venting devices are commonly used to try to reduce the damage caused by any dust explosion that may occur in silo systems. In North America and Europe the sizing of these vent areas is governed by standards NFPA 68 and EN 14491 respectively, both of which have recently come into force. The aim of the present work was to compare these standards in terms of the cost of protecting against dust exp...