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The Three Mile Island accident was a partial nuclear meltdown of the Unit 2 reactor (TMI-2) of the Three Mile Island Nuclear Generating Station on the Susquehanna River in Londonderry Township, near Harrisburg, Pennsylvania. The reactor accident began at 4:00 a.m. on March 28, 1979, and released radioactive gases and radioactive iodine into the ...
Coast Guard log reports "Potential environmental threat is 700,000 gallons of diesel on board the Deepwater Horizon and estimated potential of 8,000 barrels per day of crude oil, if the well were to completely blowout. Most of the current pollution has been mitigated by the fire. There is some surface sheening extending up to 2 miles from the ...
A checksum of a message is a modular arithmetic sum of message code words of a fixed word length (e.g., byte values). The sum may be negated by means of a ones'-complement operation prior to transmission to detect unintentional all-zero messages.
Variations in healthcare provider training & experience [45] [52] and failure to acknowledge the prevalence and seriousness of medical errors also increase the risk. [53] [54] The so-called July effect occurs when new residents arrive at teaching hospitals, causing an increase in medication errors according to a study of data from 1979 to 2006.
Inquiries. Rogers Commission Report. On January 28, 1986, the Space Shuttle Challenger broke apart 73 seconds into its flight, killing all seven crew members aboard. The spacecraft disintegrated 46,000 feet (14 km) above the Atlantic Ocean, off the coast of Cape Canaveral, Florida, at 11:39 a.m. EST (16:39 UTC).
Washington Parish received significant damage due to wind damage and local flooding. The Parish is home to many pine forests in which many of the pine trees snapped or were completely uprooted. The eye of Katrina could be seen from the eastern part of the parish, in Bogalusa as Bogalusa was only fifteen miles away from the center of the eye ...
A station in Navarre recorded wind gusts of 121 mph (195 km/h), while tropical storm force winds occurred in the southern and western portion of the state. Dennis produced nine tornadoes in the state, along with heavy rainfall that reached 8.7 in (220 mm) at a station near Bristol .
Catastrophic cancellation. In numerical analysis, catastrophic cancellation[1][2] is the phenomenon that subtracting good approximations to two nearby numbers may yield a very bad approximation to the difference of the original numbers. For example, if there are two studs, one long and the other long, and they are measured with a ruler that is ...