Starting today, we are making Timeline more widely available as we measure speed and other types of performance. The Timeline profile design allows users and their friends much easier access to their historical content, such as status updates or wall posts they made years ago.
Facebook may have used New Zealand as a test bed before , as we received reports of an iteration of the Questions product appearing there before other countries. Because the island country is less interconnected with the rest of the world, it can be easier to keep tests there a secret.
In other cases, Facebook tests products in the US first where early adopters are plentiful and market penetration, social graph density, and smartphone use is high. Users can opt to publish their Timeline and replace their old profile with it during the review period, but the Timeline will automatically publish after 7 days.
With the rollout will come a bonanza for developers of apps that leverage the Open Graph API that can publish content to the Timeline. Methods for growing viruses in the laboratory led to rapid discoveries and innovations, including the creation of vaccines for polio. Researchers targeted other common childhood diseases such as measles, mumps, and rubella, and vaccines for these diseases reduced the disease burden greatly.
Innovative techniques now drive vaccine research, with recombinant DNA technology and new delivery techniques leading scientists in new directions. Disease targets have expanded, and some vaccine research is beginning to focus on non-infectious conditions such as addiction and allergies. More than the science behind vaccines, these timelines cover cultural aspects of vaccination as well, from the early harassment of smallpox variolators see the intimidation of a prominent minister described in the Boston Smallpox Epidemic entry to the establishment of vaccination mandates, to the effect of war and social unrest on vaccine-preventable diseases.
Edward Jenner, Louis Pasteur, and Maurice Hilleman, pioneers in vaccine development receive particular attention as well. This timeline category holds nearly all of the entries for the subject-specific timelines. A few of the entries have been left out in order to provide a broad overview. Caught: Measles Virus. Thomas Peebles collected blood from sick students at a private school outside of Boston in an attempt to isolate the measles virus.
Eventually he succeeded, and the collected virus would be isolated and used to create a series of vaccines.
0コメント