1. Petroleum refinery process in which large heavy oil molecules are broken down into smaller ones. If conducted only with the application of heat, it is called thermal cracking. If a catalyst is also used, it is called catalytic cracking. If hydrogen is used in addition to heat and catalysts, it is called hydrocracking. 2. Deciphering of a code or encrypted data.
Vitamin D3 is the form of vitamin D called cholecalciferol. Cholecalciferol is the most widely known of the vitamin D series and is a fat soluble vitamin that is stored to some degree in the body. It is used as a dietary supplement and for the treatment and prevention of vitamin D deficiency.
Vitamin D (ergocalciferol-D2, cholecalciferol-D3, alfacalcidol) is a fat-soluble vitamin that helps your body absorb calcium and phosphorus.Having the right amount of vitamin D, calcium, and phosphorus is important for building and keeping strong bones.unscreen, protective clothing, limited exposure to sunlight, dark skin, and age may prevent getting enough vitamin D from the sun. Vitamin D with calcium is used to treat or prevent bone loss (osteoporosis).