1 Department of Neurology, Neurosciences Research Center, Alzahra Hospital, Isfahan University of Medical Sciences, Isfahan, Iran 2 Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran 3 Neurosciences Research Center, Alzahra Hospital, Student Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran 4 School of Medicine, Shahrekord...

Corrosion of reinforced concrete is one of the major problems in the construction industry causing premature deterioration of concrete structures well before their service life. This has placed incredible financial burden on many projects and also placed safety of users at risk. A research work was carried out to evaluate the effect of water cement ratio on corrosion of steel in reinforced conc...

A persistent question in industrial economics is the underpinning of the link between market concentration and price. How much of the link can be attributed to market power and how much to market efficiency? This paper develops a theoretical model to address that question. Applied to the US portland cement industry, the model indicates that both impacts matter. In relative terms, however, the m...