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.
The US Transportation Security Administration revealed on Sunday that enhanced security procedures on flights coming to the US now include not allowing uncharged cell phones and other devices onto planes. There is no official list of which airports are affected.