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.
The letters DC mean that this doctor is a doctor of chiropractic, or chiropractor. These letters differentiate him/her from a doctor of medicine (MD) or doctor of dentistry â¦ (DDS) or doctor of osteopathy (DO), or doctor of podiatry (DPM), or doctor of phiosophy (PhD), etc.