computer simulations tagged posts

Computer-designed customized regenerative heart valve. Credit: Image adapted from figure in publication

Cardiovascular tissue engineering aims to treat heart disease with prostheses that grow and regenerate. Now, researchers have successfully implanted regenerative heart valves, designed with the aid of computer simulations, into sheep for the first time. Tissue engineering, which involves growing replacement parts in the laboratory, forms a key part of this research. The parts can be used to replace defective cells and tissues in the body and restore their normal functioning. The bioengineered replacements have significant advantages over the artificial implants currently in use: They do not cause immune reactions in the patient’s body, and they can grow and regenerate themselves.

An inte...

The upper and lower series of pictures each show a simulation of a neutron star merger. In the scenario shown in the upper panels the star collapses after the merger and forms a black hole, whereas the scenario displayed in the lower row leads to an at least temporarily stable star. Credit: Andreas Bauswein, HITS

Scientists have managed to narrow down the size of neutron stars with the aid of computer simulations. The calculations based on data from the LIGO and Virgo observatories suggest that the neutron star radius must be at least 10.7 km. When a very massive star dies, its core contracts. In a supernova explosion, the star’s outer layers are expelled, leaving behind an ultra-compact neutron star...