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.
1 Riboflavin is a water-soluble B vitamin (vitamin B 2). 2  This means that riboflavin is not stored in the body. 3  You need to eat foods rich in riboflavin every day.4  Riboflavin helps your body cells use fat, protein and carbohydrates from foods to produce energy.nformation about Riboflavin. 1  Riboflavin is a water-soluble B vitamin (vitamin B 2). 2  Riboflavin helps your body cells use fat, protein and carbohydrates from foods to produce energy. 3  Riboflavin helps in the production of niacin (vitamin B 3) and pyridoxine (vitamin B 6).