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.
There is a ban on all cell phone use for bus drivers, and on text messaging within the city of Phoenix. Arkansas. Texting while driving is banned in Arkansas. Arkansas also bans hand-held phones for drivers between the ages of 18 and 20, and all cell phone use for school bus drivers and drivers under 18.