a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...

introduction: diabetes mellitus is an growing national and international public health concern. the number of people affected by diabetes in world by 2030 will be 69% in developing countries. regular physical activity plays a key role in the management of type 2 diabetes melitus, particularly glycemic control. it has been recommended that peoples with type 2 diabetes participate in moderate-int...

Introduction: Low back pain is a common problem among nurses. the purpose of this study was to assess effectiveness of physical health educational program on the quality of life of nursing staff with chronic low back pain working in hospitals in yazd.   Methood: This semi experimental study was carried over 119  employees with chronic low back pain working in hospitals in yazd in both interv...

Background and Objective: Resiliency and age are two important variables that play a role in patient compliance with disease. Therefore, the aim of this study was to investigate the role of resiliency and age to adjustment in patients with signs and symptoms of chronic pain.  Materials and Methods: In a descriptive and correlational study, 154 patients (64 males and 90 females) with c...

Objectives: Musculoskeletal pain is common in elderly people with prevalence range from 10% to 71%. Musculoskeletal pain is found to be a strong risk factor for disability in elderly woman. The purpose of this study is to examine the prevalence of physical impairment of elderly people. Methods & Materials: A physiotherapist has evaluated elderly persons files in four physiotherapy centers d...

Until the mid-twentieth century, it was thought that complaint of pain has physical or psychological origins. From this time onwards, a large number of researches analyzed the correctness of pain concept and gradually changed the concept of pain. Today, according to theoretical and research resources, regardless of its type, duration and severity, pain is conceptualized as a bio-psychosocial ph...