* Assisted by the National Science Foundation. Dresselhaus, Kip, and Kittel, Phys. Rev., 98, 368 (1955). 2 Kroemer, H., Phys. Rev., 109, 1856 (1958); also private communication. 3 Similar considerations have been carried out independently by Dr. Peter Kaus of the University of Southern California. Dr. S. Rodriguez of the University of Washington has successfully extended our argument to motion ...

In a prospective study of 185 players attached to 10 British rugby clubs, 151 injuries were recorded among 98 of them (53%) during a single season. Forwards sustained significantly more injuries than backs. The standard of rugby, players' body weights, degree of fitness, and presence of joint hypermobility did not affect the risk of injury. The leg was the most common site of injury. Head and n...

We suggest a simple composite model that induces the large flavor mixing of neutrino in the supersymmetric theory. This model has only one hypercolor in addition to the standard gauge group, which makes composite states of preons. In this model, 10 and 1 representations in SU(5) grand unified theory are composite states and produce the mass hierarchy. This explains why the large mixing is reali...