abstract the present thesis studies different question sentences in persian and russian languages comparatively. sentence is a syntactic unit that matches a lot of dimensions together. sentence includes syntactic structure definite meaning & concept and different applied demotions. in applied, question and imperative sentences based on speakers aim. predicative sentences state a kind of info...

testing plays a vital role in any language teaching program. it allows teachers and stakeholders, including program administrators, parents, admissions officers and prospective employers to be assured that the learners are progressing according to an accepted standard (douglas, 2010). the problems currently facing language testers have both practical and theoretical implications but the first i...

Background and Objective: Working in sitting posture, specially using a poorly designed chair is one of the critical risk factors in developing low back pain. Low back pain is one of the most common musculoskeletal disorders (MSDs) and has been reported to occur in 50-90% of all adults with recurrent rate of up to 90%. The objective of this study was to design and develop ergonomic chair for Ir...

Introduction: Mismatch of anthropometric dimensions and classroom furniture such as table, chair and bench can cause musculoskeletal disorder, back pain, neck pain and Fatigue. The purpose of this study is to summarize the results of existing studies on the relationship between students’ anthropometric dimensions and furniture in Iranian schools. Materials and Methods: For finding documenta...

Introduction: Musculoskeletal disorders are one of the prevalent factors that lead to absenteeism at work. The purpose of this study was to evaluate the physical posture and methods to improve workstations in the petrochemical industry. Methods: This interventional study was carried out at the Petrochemical Company and according to the type of work and posture evaluation using two methods QEC a...

  Background and aim: Many people have to sit down during daily activities. The process of sitting down especially for a long time in comparison of standing up cause many back pains. Special chairs with special backs and sits are designed for offices, industries and institutes because of back pain of sitting down for a long time and increasing the performance of employees. The target of this re...

Background: Problems and complications caused by inappropriate tables and chairs dimensions in changing the shape of children's body are important issues nowadays. The aim of this study was to evaluate anthropometric dimensions of the changes in elementary school students of Mazandaran province between 1992 and 2014. Methods: in two cross-sectional studies carried out between 1992 and 2014, an...