Foods That Contain Vitamin B3. The vitamin B3 we get from food includes preformed niacin and the amino acid tryptophan, which can be converted to niacin in the body.Food composition tables, however, list only preformed niacin.oods That Contain Vitamin B3. The vitamin B3 we get from food includes preformed niacin and the amino acid tryptophan, which can be converted to niacin in the body.
On base percentage plus slugging percentage (OPS) is a relatively new measurement of a hitterâs performance in baseball. It essentially measures the playerâs ability to hit the ball, and also to get safely to base. Thus many look to OPS as a valuable tool for assessing the offensive skill of a player.
Black Ops is a first-person shooter, retaining the same gameplay mechanics as previous Call of Duty titles. The player assumes the role of a foot soldier who can wield various firearms (only two of which can be carried at once), throw grenades and other explosives, and use other equipment as weapons.