heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...

the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...

due to extraordinary large amount of information and daily sharp increasing claimant for ui benefits and because of serious constraint of financial barriers, the importance of handling fraud detection in order to discover, control and predict fraudulent claims is inevitable. we use the most appropriate data mining methodology, methods, techniques and tools to extract knowledge or insights from ...

Researchers have found that a user’s perception of the campus environment is related to quality life and academic accomplishment. In this study, we have analyzed the perceptions of more than 600 users at the Ferdowsi University of Mashhad to evaluate the level of green space use and to understand user preferences from aesthetics and safety aspects. The results show that for most of the responde...

abstract objectives gradual increase length and complexity of utterance (gilcu) therapy method is a form of operant conditioning. this type of treatment is very precise and controlled that is done in 54 steps in 3 speech situations consisted of monologue, reading and conversation. this study aimed to examine the effects of gilcu treatment method on reduction of speech dysfluency of school-age...

Increase in urban population and, the growth and spread of physical and social dimensions of cities has a significant impact on urban life, so that nowadays the concept of cities without regarding green spaces and its various forms is unthinkable. Hence the main objective of this research is to improve the quality of green space in the city of Miyaneh. This Research In terms of the target is an...