The Hartmann procedure involves resection of the rectosigmoid colon with creation of a colostomy. It was first described by Henri Albert Hartmann at the 30th Congress of the French Surgical Association in 1921.
Propionic acid (from the Greek words protos, meaning first, and pion, meaning fat; also known as propanoic acid) is a naturally occurring carboxylic acid with chemical formula C H 3 CH 2 C O OH.acteria of the genus Propionibacterium produce propionic acid as the end-product of their anaerobic metabolism. This class of bacteria is commonly found in the stomachs of ruminants and the sweat glands of humans, and their activity is partially responsible for the odor of both Swiss cheese and sweat.
Mechanism. Kojic acid is a compound that is commonly derived from various fungi. Kojic acid is often used as a skin lightening agent because of its effects on a protein known as tyrosinase.ojic acid is often administered as part of a topical gel that contains 1 to 4 percent kojic acid. One of the side effects of these formulations is that they can irritate the skin, causing an itching and painful rash known as contact dermatitis.