surface-piercing propellers (spps) have been widely used in high speed craft due to some desirable features such as high efficiency, omission of resistance of equipment attached to the propeller and proper functioning of cavitation. unlike the submerged propellers, theoretical methods have no significant application on simulation of sppsbecause of problems related to modeling of these propeller...

Tight closure test ideals have been central to the classification of singularities in rings characteristic p &gt; 0 p&gt;0</mml:annot...

background and aim: aging is associated with reduced cognitive abilities including attention and memory. there is some evidence that shows randomized dichotic digits test (rddt) has enough difficulty to show the ear asymmetry in dichotic listening. this study aimed to compare the effect of free and focused attention on dichotic listening ability of young and elderly listeners. methods: the cros...

a new chemical compound is developed at petroleum university of technology to enhance therecovery of the free imbibition process and simultaneously hinder asphaltene precipitation. thecompound is tested on heavy oil samples from marun oil field, bangestan reservoir. the effects ofthe chemical compound on viscosity, hydrocarbon composition, and average molecular weight ofthe heavy oil are invest...