Undergarment Boudreaux showed the world that an American woman could establish and run a company, and she also caused a revolution in the underwear industry. In 1913, a New York socialite named Mary Phelps Jacob created the first modern brassiere by tying two handkerchiefs together with ribbon. Jacob's original intention was to cover the whalebone sticking out of her corset, which was visible through her sheer dress. Jacob began making brassieres for her family and friends, and news of the garment soon spread by word of mouth. By 1914, Jacob had a patent for her design and was marketing it throughout
Streeter–Phelps equation The study was based on data obtained from May 1914 to April 1915 by the United States Public Health Service under supervision of Surg. W.H. Frost. More complex versions of the Streeter-Phelps model were introduced during the 1960s, where computers made it possible to include further contributions to the oxygen development in streams. At the head of this development were O'Connor (1960) and Thomann (1963). O'Connor added the contributions from photosynthesis, respiration and sediment oxygen demand (SOD). Thomann expanded the Streeter-Phelps model to allow for multi segment systems. The simple Streeter-Phelps model is based on the assumptions that a single