Procedure for cholecystokinin test: Dose of cholecystokinin is based on body weight and must be determined by physician; cholecystokinin is injected intravenously Before having this test Â» Conditions affecting use, especially: Sensitivity to the cholecystokinin preparation PregnancyâUse not recommended; may induce spontaneous abortion or premature labor {15} {24} Other medical problems, especially intestinal obstruction Preparation for this test
A Creative MuVo, a small solid-state MP3 player in a keydrive form-factor. An MP3 player or Digital Audio Player is an electronic device that can play digital audio files. It is a type of Portable Media Player. The term 'MP3 player' is a misnomer, as most players play more than the MP3 file format. Since the MP3 format is widely used, almost all players can play that format. In addition, there are many other digital audio formats.
The first digital tape recorder was demonstrated in Japan in 1967, with the first digitally mastered records appearing on the Denon label in 1972. The first commercially available digital audio recorder was the Sony PCM-1. Introduced in 1977, the PCM-1 converted an incoming analogue signal into a digital one, which was then recorded onto a standard video cassette in a VCR. Initially, digitally mastered records were still released on vinyl disks in the analogue format. In 1982, however, Sony and Philips released the first compact discs and players. On a CD, the digital information was embodied as millions of microscopic bits in the reflective aluminum coating of the disk.