thermal barrier coatings (tbcs) are used to provide thermal insulation to the hot section components of gas turbines in order to enhance the operating temperature and turbine efficiency. hot corrosion and thermal shocks are the main destructive factors in tbcs which comes as a result of oxygen and molten salt diffusion into the coating. in this thesis atmospheric plasma spraying was used to dep...

the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...

 Background and Objective: Sleep deprivation affects physiological and psychological functioning and probably increases the body's energy demand. It seems that sleep deprivation can have a negative effect on athletes' performance and affect the body's hormones secretion. This study investigated the effect of 24-hour sleep deprivation on endurance performance and hormonal responses to ...

Introduction: The aim of the present study was to investigate the effect of voluntary training period after the induction of experimental autoimmune encephalomyelitis (EAE) on some myelin-producing proteins in C57BL/6 female mice. Methods: In this experimental study first 28 mice, which were 6-8 weeks old, were purchased and were randomly divided into three groups. Exercise activity (n=12), he...

Introduction: Exercise and environmental stressors cause alteration in different components of the immune and hormonal systems. Therefore, the purpose of this study was to explore the changes of serum cortisol and salivary IgA of athletes after a single bout of exercise cold, warm and natural environments. Methods: Ten young male athletes who ran on a treadmill for 1 hour at %60 VO2max in envir...

Background &aim:During intense exercise reactive species produce oxygen that results in cell damage. It seems that the use of antioxidant supplements reduces the oxidative stress caused by such exercises. Therefore the purpose of this study was to investigate the effect of short-term colostrum supplementation on serum malondialdehyde levels and total antioxidant capacity induced by acute resist...

abstract the present study investigated the effects of task types and involvement load hypothesis on incidental learning of 10 target words (tws) in junior high schools (jhss) in givi, ardabil. the tasks deployed in this study were two input-based tasks (reading plus dictionary use with an involvement index of 3, and reading plus gap-fill task with an involvement index of 2), and one output-ba...

Background & Aims: Obesity during childhood and adolescence in addition to acute symptoms plays a central role in a major component of the metabolic syndrome, the multiplex risk factor for type 2 diabetes and cardiovascular diseases. It has been established that cardiovascular risk factors in childhood and adolescence may predict risk of affection on cardiovascular disease in adults and exercis...