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.
Using cell phones aloft on commercial and private aircraft is banned not by the FAA but by the Federal Communications Commission, which regulates telephone use. In prohibiting airborne use in 1991, the FCC was mainly concerned about cell phones' potential to interfere with ground-to-ground cellular transmission.