nowadays energy has significant role in socio economic development of counties; any decision on energy sector may affect the broad area in societies. system approach in energy modeling as an efficient method is known by many researchers in management and planning in a country particularly in energy sector. also system dynamics is one of the efficient methods, for reason unique ability at solvin...

osteoarthritis is the most common joint disease.the main pathologic manifestation of disease is local destruction of cartilage in diarthrodial joint. new bone formation in marginal surface of the joint is a sign progressive disease. many systemic and local factors are introduced in initiate and progression of osteoarthritis include: age, sex, weight, race, genetic background, bone densitometry,...

in this study it has been tried, to compare results and convergence rate of sensitivity analysis and conjugate gradient algorithms to reduce fuel consumption and increasing engine performance by optimizing the timing of opening and closing valves in xu7/l3 engine. in this study, considering the strength and accuracy of simulation gt-power software in researches on the internal combustion engine...

background many people are concerned with the problems and side effects caused by increased levels of fast food (ff) consumption, especially among adolescents. several studies have assessed the problems of ff consumption particularly weight gain and obesity. however, few address the methods, strategies, and policies needed to reduce this issue. objectives this study aims to explore parent and s...

Paper represents a potent but underexplored keyword for Victorian studies today. Not only is it the unacknowledged techno-material priori of itself, its histories also offer material connections that link literary texts, bureaucracy, and consumer culture to global ecologies resource extraction.