Deezer was to give unlimited access to music lovers through streaming technology. The site in its original incarnation was charged with copyright infringement by French agency SACEM, and after being shut down in April 2007 was relaunched as Deezer in August 2007, having reached an agreement with SACEM to pay copyright holders with revenue from advertising on the site and by giving users the ability to download songs streamed on Deezer from iTunes, with Deezer receiving a commission from each purchase. At the time of its launch in 2007, Deezer had not yet negotiated agreements with major music labels and therefore
Tidal volume Tidal volume Tidal volume (symbol V or TV) is the lung volume representing the normal volume of air displaced between normal inhalation and exhalation when extra effort is not applied. In a healthy, young human adult, tidal volume is approximately 500 mL per inspiration or 7 mL/kg of body mass. Tidal volume plays a significant role during mechanical ventilation to ensure adequate ventilation without causing trauma to the lungs. Tidal volume is measured in milliliters and ventilation volumes are estimated based on a patient's ideal body mass. Measurement of tidal volume can be affected (usually overestimated) by leaks in the