Two forms of vitamin A are available in the human diet: preformed vitamin A (retinol and its esterified form, retinyl ester) and provitamin A carotenoids [ 1-5 ]. Preformed vitamin A is found in foods from animal sources, including dairy products, fish, and meat (especially liver).By far the most important provitamin A carotenoid is beta-carotene; other provitamin A carotenoids are alpha-carotene and beta-cryptoxanthin.reformed vitamin A is found in foods from animal sources, including dairy products, fish, and meat (especially liver). By far the most important provitamin A carotenoid is beta-carotene; other provitamin A carotenoids are alpha-carotene and beta-cryptoxanthin.
Dakinâs solution is an antiseptic solution developed during World War I to treat infected wounds. It is a viable solution that is being used even today and itâs a perfect homemade antiseptic for preppers and survivalists. Dakinâs solution is an antiseptic solution containing sodium hypochlorite (common household bleach) and water. Dakinâs solution is not the only antiseptic available, and on the market you can find stronger germicidal solutions, like the ones containing carbolic acid (phenol) or iodine.
geckskin is a new super adhesivebased on the mechanicsof gecko feet named one of the top five science breakthroughs of 2012 by cnn money geckskin is so powerful that an index card sized piece can hold 700 pounds on a smooth surface such as glass yet can be easily released and leaves no residue