Nearly all tractor PTO arrangements used today consist of a rotating mechanical shaft with two or more universal joints. This arrangement continues to be an entanglement hazard. By driving the attachment with fluid power, this hazard could be eliminated. This project included the design, development, and testing of an experimental tractor based on a John Deere 4040. The entire power train was t...

We put in evidence the unexpected behavior of Leidenfrost droplets at the later stage of their evaporation. We predict and observe that, below a critical size Rl, the droplets spontaneously take off due to the breakdown of the lubrication regime. We establish the theoretical relation between the droplet radius and its elevation. We predict that the vapor layer thickness increases when the dropl...

PURPOSE The aim of this study was to analyse changes taking place within selected kinematic parameters of the swimming start, after completing a six-week plyometric training, assuming that the take-off power training improves its effectiveness. METHODS The experiment included nine male swimmers. In the pre-test the swimmers performed three starts focusing on the best performance. Next, a plyo...

Abstract Dental implants are fixtures that constitute for the replacements of root a missing natural tooth. implant therapy has been widely used restoration partially and fully edentulous patients. The literature emphasizes importance passively fitting prosthesis to prevent prosthodontic complications or even loss fixture integration. Failure achieve force tightening superstructure may result i...