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background: studies report inappropriate snack and junk food consumption patterns in children and young adults in iran. the current survey was aimed to explore fast food consumption behaviors in high-school students based on the theory of planned behavior. materials and methods: a cross-sectional study was done among 500 high-school students. samples were selected based on cluster sampling meth...

efflux time measurements are carried out for gravity draining of a liquid from a large cylindrical tank (where the flow is essentially laminar) through single exit pipe in the absence and presence of cetyl pyridinium chloride (cpc) surfactant solutions. the variables considered are initial height of liquid in the tank, dia. of tank, length of the exit pipe and concentration of surfactant. the d...

upstream blankets, drains and cutoff walls are considered as effective measures to reduce seepage, uplift pressure and exit gradient under the foundation of hydraulic structures. to investigate the effectiveness of these measures, individually or in accordance with others, a large number of experiments were carried out on a laboratory model. to extend the investigation for unlimited arrangement...