The wave propagation modeling in cylindrical human long dry bones with cavity is studied. The dynamic behavior of a dry long bones that has been modeled as a piezoelectric hollow cylinder of crystal class 6 is investigated. An analytic solutions for this mechanical wave propagation in a long dry bones have been obtained for the flexural vibrations. The frequency equation for poroelastic bones i...

Pipelines carrying fluids and slurries are quite common. The third-generation pipelines carrying spherical or cylindrical capsules (hollow containers) filled with minerals or other materials including hazardous liquids are rather a new concept. These pipelines need to be designed optimally for commercial viability. An optimal design of such a pipeline results in minimum pressure drop in the pip...

This experimental study investigates the advantage of using Mn–Zn Fe2O4/water ferrofluid subjected to effect a non-uniform magnetic field on thermal efficiency fabricated cylindrical solar collector with receiver in shape helical pipe. Using ASHRAE Standard, this has investigated influence nanoparticles volume fraction (0.0–1.0%), mass flow rate fluid (0.00415–0.033 kg/s), and produced by set p...

Electron Lenses built and installed in Tevatron have proven themselves as safe and very reliable instruments which can be effectively used in hadron collider operation for a number of applications, including compensation of beam-beam effects [1], DC beam removal from abort gaps [2], as a diagnostic tool. In this presentation we – following original proposal [3] – consider in more detail a possi...

Hollow cylindrical and truncated conical shells depict enhanced torsional shear resistance compared to beams plates are ubiquitously used in structures aeronautics, submarines, wind turbines, pressure vessels, transmission pylons. Upon extensive localised blast, these elements undergo local global deformation failure. The detrimental damage the shell depends on stand-off charge mass is proporti...

Air flow measurement at the outlets of air terminal devices installed in ventilation systems is very difficult. At anemostats, swirl diffusers, grilles, can swirl, contract, or expand sharply, change its direction, etc., which causes great errors. Therefore, it was necessary to develop a universal measuring device that would make possible measure rate with high accuracy. It should consist an co...