Rear Wheel Steer Bikes: Unconventional stable bicycle

The design of the ordinary bicycle has barely changed since the end of the 19th century. Until then it evolved to a well ridable machine with no need for further drastic modifications. However, around 2011 it was shown that, just like an ordinary bicycle, strange appearing designs could also be stable. One of these designs was a bicycle that...

Needle deflection in tissue

Introduction: One of the factors that contribute to the total needle-targeting error in medical procedures is needle deflection, which can lead to e.g. hemorrhage, prolonged intervention time and decreased treatment efficiency. This deflection can be defined as the deviation of the needle from its suspected straight insertion path. In this study...

The design of a new protocol to acccurately estimate the passive and active components of the muscle system

For this research a new protocol was developed which acquires rich enough data in terms of position, velocity and accelerations such that all the pasive and active parameters of the agonist and antagonist muscle of the wrist in the newest and for this study expended and adapted neuromuscular model can be accurately estimated. Concluded was that...

Increased physical activity severely induces osteoarthritic changes in knee joints with papain induced sulfate-glycosaminoglycan depleted cartilage

Introduction Articular cartilage needs sulfated-glycosaminoglycans (sGAGs) to withstand high pressures while mechanically loaded. Chondrocyte sGAG synthesis is regulated by exposure to compressive forces. Moderate physical exercise is known to improve cartilage sGAG content and might protect against osteoarthritis (OA). This study investigated...