objectives: the main purpose of this study is to produce an instrument for handwriting evaluation and to execute it on mentally retarded (mr) students. methods: this was a descriptive, cross-sectional, and relationship study. 126 mr students (53 girls and 73 boys) ranging from 9 to 19 years old (13.23±2.17) from two exceptional children schools in shahr-e-rey participated in this study. a handw...

Background: The magnetic resonance imaging (MRI)-based radiotherapy planning method have been considered in recent years because of the advantages of MRI and the problems of planning with two images modality. The first step in MRI-based radiotherapy is to evaluate magnetic resonance (MR) images geometric distortion. Therefore, the present study aimed to evaluate system related geometric distort...

background: this study was undertaken to compare the outcome in patients with moderate to severe ischemic mitral regurgitation (imr) undergoing coronary artery bypass grafting (cabg) with either mitral valve repair or mitral valve replacement. methods: between march 2002 and february 2005, 49 consecutive patients (mean age: 62.84±8.42 years; mean euroscore: 10.03±3.12) with coronary artery dise...

The effect of intelligent semi-active thermal exchange-fuzzy controller in structural rehabilitation by attenuating seismic responses of structural systems is investigated. In the suggested control system, MR dampers and sensors are employed as a semi-active controller. Resultant control forces of MR damper are administrated by providing external voltage supply, during the earthquakes and high ...

In this research, the effect of shape parameters such as number of magnet wire turns, spools, thickness of the gap, and pole length in a Magneto-rheological (MR) fluid damper is analytically investigated and the optimization of these parameters is done with response surface method (RSM) which is combined Neuro-Fuzzy method and Particle Swarm Optimization (PSO) algorithm. Since the electro-magne...

In this paper, optimal design of hybrid low damping base isolation and magnetorheological (MR) damper has been studied. Optimal hybrid base isolation system has been designed to minimize the maximum base drift of low damping base isolation system where for solving the optimization problem, genetic algorithm (GA) has been used. In design procedure the maximum acceleration of the structure has ...

background coagulase-negative staphylococci (cons) are opportunistic pathogens. methicillin resistance is common in cons and may play an important role as reservoir of staphylococcal cassette chromosome mec (sccmec) for staphylococcus aureus. objectives the aim of this study was to determine molecular characteristics of nasal carriage of methicillin-resistant coagulase negative staphylococci am...

Background: Complications of national program vaccination have great importance, because widespread use of vaccines and expanded age range of vaccinees increases the percentage of side effects. Present study was performed for evaluating the complications of national measles and rubella vaccination in Hamedan province. Materials and methods: This cross-sectional descriptive study was done from...

in this study the catalytic dehydrogenation of ethylbenzene to styrene was investigated in a simulated tubular sodalite membrane reactor. the high quality microporous sodalite membrane was synthesized by direct hydrothermal method and characterized by single gas permeation measurements. the performance of the prepared membrane showed high potential for application in a dehydrogenation membrane ...