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.
Safety and Security Rules for Batteries. What's allowed what is not allowed when it comes to batteries on aircraft changes over time. Most smaller batteries used in consumer electronics, such as laptops, cell phones, handheld games, and other personal electronic devices, are allowed as both as checked and carry-on luggage items.