Types of abstracts. There are two types of abstracts: descriptive and informative. They have different aims, so as a consequence they have different components and styles. There is also a third type called critical, but it is rarely used.
Samsung Galaxy Note 7 smartphone has been banned from all aircraft in the United States. The US Transportation Department and other agencies have banned passengers from carrying on the devices or putting them inside checked baggage during flights.
Cell phone bans for novice drivers: 30 states and D.C. ban cell phone use by novices. Cell phone bans for school bus drivers: 19 states and D.C. ban the use of cell phones by school bus drivers. Ban on texting while driving: 35 states, D.C., and Guam ban texting while driving for all drivers.