Stress in financial markets influences economic agents’ behavior by creating uncertainty and changing the expectations. Critical financial stress can lead to financial crisis. Financial crises are among the events always present in the world economy. Iran is not an exception. This paper aims to study the impact of financial stresses on Iran’s per capita GDP. By using ARDL (Auto Regressive Distr...

Friction stir welding is an innovative joining process being developed for use in aerospace manufacturing. Like most welding processes there exist problems with post-weld residual stresses and subsequent geometrical distortion. The residual stress-state of a welded component can be modified using suitably applied mechanical tensioning and thus distortion can be reduced or eliminated. In the pre...

In this research, a novel method to decrease micro-residual stresses of fibrous composites by adding carbon nanotubes (CNTs) is proposed in detail. The negative coefficient of thermal expansion and the high young’s modulus of CNTs can be utilized to counterbalance the process induced residual stresses in composites. To this end, first, the effects of adding CNTs to the matrix of fibrous composi...

in research on the history of medicine, less attention is paid to the subject of historical geography . considering the importance of this subject in the history of science, this paper discusses one of the most important science centers in the world. this outstanding medical research center was located in gorganch city, chorasmia area, in the eastern part of the islamic. chorasmia medical schoo...

ketab-ol-ein, which was written by ahmad farahidi, is one of the oldest dictionaries that exist today. in the preliminary discussion we mentioned that, although historical sources show that the work of ibn abbas looks like a dictionary, it is becoming accepted that ketab-ol-ein is the first dictionary. the article starts with explanations about the life and work of khalilibn ahmad. we have also...

background: current development of surgery is due to medical practitioners and surgeons practices and experiments throughout the history. albucasis, the muslim spanish physician in 10 century ad was one of the pioneers in surgery that had major influence by his innovations in surgical techniques, treatment approaches and invention of instruments. he introduced a type of surgical knife named mok...

Drying represents one of the oldest unit operations employed in industrial processes. Drying is viewed as a process of simultaneous heat and mass transfer. Porous Clay-like material undergoes stresses due to non-uniform distribution of temperature and moisture induced by heat and mass transfer respectively. The aim of this work is to simulate the stresses induced by heat and mass transfer durin...