Cytomegalovirus (CMV) is a prevalent pathogen, with 40 to 100 percent of the general population showing prior exposure by serology.1 Up to 20 percent of children in the United States will have contracted CMV before puberty.
The concept of the Sousaphone was created by the American composer and bandmaster John Philip Sousa, putting it in a category with the Wagner tubaâa horn conceptualized by German composer Richard Wagnerâand the Saxophone, one of the numerous inventions of Belgian instrument maker Adolphe Sax.
That is, not until the Italian physicist Alessandro Volta came along. In 1800, Volta created the first modern day battery when he built what came to be known as his voltaic pile. The pile was made of up of zinc and copper plates with vinegar-or brine-dampened pieces of leather or pasteboard placed in between each plate. year after Volta first introduced his voltaic pile he presented his invention to the French National Institute, in which Napoleon Bonaparte was in attendance. In honor of Volta's invention, his name is used as the unit of electromotive measurement known as a volt.