This special protein makes its way to the surface of an infected personâs blood cells, where it becomes sticky and begins its damage. However, while RIFIN bonds strongly with type A blood cells, it only weakly links to type O. While simple, this explanation only became possible after the researchers had isolated the correct one of many existing variants of the protein.
The Sound of Music (film) The Sound of Music is a 1965 American musical drama film produced and directed by Robert Wise, and starring Julie Andrews and Christopher Plummer. The film is an adaptation of the 1959 Broadway musical The Sound of Music, composed by Richard Rodgers with lyrics by Oscar Hammerstein II.
The history of sound recording-which has progressed in waves, driven by the invention and commercial introduction of new technologies-can be roughly divided into four main periods: 1  the Acoustic era, 1877 to 1925. 2  the Electrical era, 1925 to 1945 (including sound on film). 3  the Magnetic era, 1945 to 1975.n the 1990s, digital audio systems were introduced and began to prevail. In many of them the sound recording is again recorded on a separate disk, as in Vitaphone; but digital processes can now achieve reliable and perfect synchronization.