The wear and wear debris from rotating-platform mobile-bearing knees and fixed-bearing knees were compared in knee joint-simulator studies. The wear rate of the fixed-bearing knees was found to ...

• Magnetic bearings support rotating shafts in five axes without solid or fluid lubricants. • Advances in electronics allow previously bulky controllers to mount on or near rotating machinery. • ...

Please provide your email address to receive an email when new articles are posted on . The nonposterior-stabilized mobile-bearing knee and the posterior-stabilized fixed-bearing design have been ...

One of the most demanding applications of real-time control is the active magnetic bearing (AMB). Suspending a shaft rotating faster than 10,000 RPMs in a magnetic field with a gap of .015 ...

In some applications, allowable load seriously influences selection. Major variables affecting load capacity are ball size and number and internal geometry of the bearing. Static: Primary ...

Hydropower is among the most mature and reliable renewable energy technologies, but its dependability rests on thousands of ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...