About 1 hour after shutdown, the decay heat will be about 1.5% of the previous core power. After a day, the decay heat falls to 0.4%, and after a week it will be only 0.2%.
Riboflavin, also known as vitamin B2, is a vitamin found in food and used as a dietary supplement. As a supplement it is used to prevent and treat riboflavin deficiency and prevent migraines. It may be given by mouth or injection. It is nearly always well tolerated.
B; B complex; B vitamin; B-complex vitamin; vitamin B; vitamin B complex (originally thought to be a single vitamin but now separated into several B vitamins). Meronyms (substance of riboflavin): flavin (a ketone that forms the nucleus of certain natural yellow pigments like riboflavin).