The word “prehistory”, in its general technical sense, can refer to a description of the dynamic states of an object, taking into account the states preceding the moment under consideration. This is ...

Please provide your email address to receive an email when new articles are posted on . The wear and wear debris from rotating-platform mobile-bearing knees and fixed-bearing knees were compared in ...

• 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. • ...