Studies on air infiltration rates in Australia have been few. One study measured 'natural' infiltration rates in unoccupied houses in Melbourne and found that background infiltration rates were 0.33 air exchanges per hour (ACH) (Biggs et. al.1987).ata. Studies on air infiltration rates in Australia have been few. One study measured 'natural' infiltration rates in unoccupied houses in Melbourne and found that background infiltration rates were 0.33 air exchanges per hour (ACH) (Biggs et. al. 1987).
Doctor of Osteopathic Medicine (D.O. or DO) is a professional doctoral degree for physicians and surgeons offered by medical schools in the United States.
Â· just now. Report Abuse. D.O. means 'Doctor of Osteopathy' which is a medical degree similar to 'M.D.' Most people don't know what a DO is, but they can do everything an MD can ie: perform surgery, prescribe medicine. Source(s): I'm a D.O. Wally Â· 9 years ago. Thumbs up.