allergic rhinitis (ar) is one of the most common allergic disorders of child¬hood. in order to determine the frequency of ar among school-age children, a cross-sectional study was performed. one thousand, nine hundred and thirty-two children (931 boys and 1001 girls), aged 7-18 years, from 30 systematic randomly selected schools of tehran, the capital of iran, were investigated in this study. s...

using the lennard-jones (12-6) potential, a new equation of state is obtained that can predict properties of both gases and liquids relatively well. this equation of state is given as (z-a)v2=(a/v2)-b, where z is the compressibility factor, a and b are constants, and a is an adjustable parameter that depends on the temperature, volume and the nature of the fluid, and its expressions depends upo...

background: breast cancer is the most common cause of cancer in women. this tumor is hormone dependent tumor and oncologists use estrogen receptor (er), progesterone receptor (pr) and her2 for treatment of this malignancy. androgens like testosterone and their receptors (ar) have a role in the pathophysiology of breast cancer but their clinical values are not clear. method: ar expression was ev...

background: the presence of even a very small quantity of dye in water bodies is undesirable and affects the water bodies. dye removal from industrial waste water is significant; hence in this study, a material that is an economical waste product was employed to test its acid dye removing capacity from aqueous solution. methods: in this study, batch mode experiments were performed in the sorpti...