The experimental studies reported by Hekimouglu recently  revealed that the tilt angle of picks on road-headers has an optimal value, which was roughly the half of rock breakout angle for corner cutting picks.
By eliminating the time tf in the system of two equations represented by these conditions, we can deduce a law expressed by a function of the type [v.sub.0](a), showing how the throwing angle varies according to the throw angle for the ball to penetrate into the basket.
Paired samples t-test comparison showed that the Collum angle for maxillary central incisor for patients with Class II division 2 malocclusion was significantly higher than Class II division 1, mean difference being 6.38 5.81.(Table 2)
In order to collect those protons which take off in a direction away from the MCP, a fourth deflecting grid set at 22 kV to 26 kV is inserted between the decay volume and the electron detector to bring about a 4[pi] collection solid angle for protons.