For any trajectory of a particle in a crystal a time-reversed trajectory is possible. The starting point of a trajectory becomes the final one, and vice versa. This leads to the idea of reversibility of the dechanneling processes [1]. In the depth of a crystal, besides the particles leaving the channeling mode (dechanneling or feeding out), there may be particles entering the channeling mode (r...

The pin-in-the-slot joint is a common element in machines, and the dynamics of joints with clearances an actively investigated topic. Important applications such can be found Geneva mechanisms, robotized gear selectors, centrifugal vibration absorbers (CPVA) other important mechanical devices. paper will review main analytical steps required to obtain equations characterizing different force co...

Vacuum-assist venous drainage (VAVD) can increase venous blood return during cardiopulmonary bypass (CPB) procedures. However, the negative pressure created in the closed cardiotomy reservoir can be transmitted to the oxygenator if a nonocclusive or centrifugal arterial pump is used, resulting in bubble transgression (BT) from the gas to blood compartment of the oxygenator. We analyzed the vacu...

PLLA fibrous tissue scaffolds with controlled fiber nanoscale surface roughness are fabricated with a novel centrifugal jet spinning process. The centrifugal jet spinning technique is a highly efficient synthesis method for micron- to nano-sized fibers with a production rate up to 0.5 g min(-1). During the centrifugal jet spinning process, a polymer solution jet is stretched by the centrifugal ...