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.
Some airlines also restrict cell-phone use on the ground, which isn't covered by the FCC ban, and which the FAA leaves to the airlines' discretion. Sheehan says he believes air carriers have resisted allowing cell-phone use on the ground because it detracts from the revenue they get from the air phone..