Dynamic response of multispan viscoelastic thin beams subjected to a moving mass is studied by an efficient numerical method in some detail. To this end, the unknown parameters of the problem are discretized in spatial domain using generalized moving least square method (GMLSM) and then, discrete equations of motion based on Lagrange’s equation are obtained. Maximum deflection and bending momen...

BACKGROUND Studies in Afghanistan have shown substantial mental health problems in adults. We did a survey of young people (11-16 years old) in the country to assess mental health, traumatic experiences, and social functioning. METHODS In 2006, we interviewed 1011 children, 1011 caregivers, and 358 teachers, who were randomly sampled in 25 government-operated schools within three purposively ...

We consider the problem of walking a robot in an unknown polygon called “street”, starting from a point s to reach a target t . The robot is assumed to have minimal sensing capability in a way that cannot infer any geometric properties of the environment, such as its coordinates, angles or distances; but it is equipped with a sensor that can only detect the discontinuities in the depth informat...

In order to carry out experimental investigations on radial inflow gas turbine, a special test laboratory was designed and constructed at Sharif University of Technology. This laboratory is introduced in the present paper and experimental procedures are elaborated on. Then, some test results are presented and discussed. The trends of performance characterisitics match our expectation and show g...

In order to carry out experimental investigations on radial inflow gas turbine, a special test laboratory was designed and constructed at Sharif University of Technology. This laboratory is introduced in the present paper and experimental procedures are elaborated on. Then, some test results are presented and discussed. The trends of performance characterisitics match our expectation and show g...

Recent progress in advanced manufacturing enables fabrication of macro-scale hollow metallic lattices with unit cells in the millimeter range and sub-unit cell features at the submicron scale. If designed to minimize mass, these metallic microlattices can be manufactured with densities lower than 1 mg/cm3, making them the lightest metallic materials ever demonstrated. Measuring the compressive ...

Femoral artery; Nitinol stent; Material properties; Mechanical performance; Finite element analysis. Abstract The Finite element method was used for evaluation of the effects of material properties on the mechanical performance of the new geometry designed for the Z-shaped open-cell femoral artery selfexpanding stent, made of Nitinol wire, by application of crushing force. The behavior of the s...

adult SLE patients was noted between the presence or levels of antibodies to hsp90 and the presence or levels of rheumatoid factor. It is thus clear that the disease-specific occurrence of autoantibodies to hsp90 in adult SLE patients [1] and MRL/lpr mice [2] cannot be accounted for by the presence of RF. In our studies, we did not examine in detail the immune response to human hsp65. It would ...