If you need to use the. guidelines to cite sources, there are two formats you can use. The author-date format is often used in the physical, natural, and social sciences, while the note-bibliography format is more common in the humanities (literature, history, and the arts).
The BBCOR one-piece bats are made of composite or metal and they are one solid piece from the barrel to the handle. The two-piece bats have separate barrels and handles. The two-piece bats usually have different materials, with a composite handle and a metal or composite barrel.
Starting in January, 2011, any and all aluminum baseballs that are used in NCAA baseball will have to carry a seal of BBCOR approval. BBCOR stands for âBatted Ball Coefficient of Restitutionâ and it focuses on how much of a trampoline effect the barrel of a bat has on a ball. Bat manufacturers will have to, in effect âdeadenâ the trampoline bounce that pitched balls experience when a batter makes contact.