in this work, the time series modeling was used to predict the tazareh coal mine risks. for this purpose, initially, a monthly analysis of the risk constituents including frequency index and incidence severity index was performed. next, a monthly time series diagram related to each one of these indices was for a nine year period of time from 2005 to 2013. after extrusion of the trend, seasonali...

purpose: to report the rate of vitreous loss during phacoemulsification and its contributing risk factors in patients operated on at labbafinejad medical center.  methods: this prospective comparative descriptive study included patients with cataract undergoing phacoemulsification by ophthalmology residents or cornea fellows from november 2006 to november 2007. all patients underwent a complete...

purpose : to describe the survival characteristics and prognostic factors of patients with retinoblastoma in a referral center in iran methods : from medical records, we retrospectively analyzed the data of 139 consecutive children diagnosed in our hospital between 1991 and 2001 as having retinoblastoma. information on gender, laterality, age at diagnosis, presenting signs, tumor staging, treat...

selecting an effective project plan is a significant area in the project management. the present paper introduces a technique to identify the project plan efficient frontier for assessing the alternative project plans and selecting the best plan. the efficient frontier includes two criteria: the project cost and the project time. besides, the paper presents a scheme to incorporate directed acyc...

background: primary gastric lymphoma (pgl) is an uncommon malignancy with various histological subtypes and treatment outcomes. the aim of this study was to investigate the potential prognostic factors and clinicopathological characteristics of iranian patients with pgl. methods: the clinicopathological characteristics of 60 patients with pgl were retrospectively reviewed from 2001 to 2012. the...

Introdouction: Although highly desirable outcomes and longterm survival of dental implant treatments are well documented, implant failures still occur due to various reasons. Several risk factors may impair implant survival including implant dimensions (length, diameter, and implant design), procedures, local bone density at the implant site, and patient-related risk factors such as age, smokin...