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.
This picture taken on December 5, 2015 shows promoters smoking electronic cigarettes during the Vape Fair in Kuala Lumpur. Why the U.S. Has Banned Vaping on Flights. The U.S. Department of Transportation has explicitly banned the use of electronic cigarettes, or vape pens, on commercial plane flights. The rule applies to all scheduled flights in, to, and from the U.S.