Over the next 150 years Londinium developed into a centre for trade and business, and also the administrative centre for the Roman-occupied areas in the rest of England. The new city included buildings like a basilica, an ampitheatre, temples to gods such as Mithas (a Persian deity), a forum and the Governorâs Palace.
AOV is simply an abreviation for Automatic Opening Vent. An AOV system is a control system designed to vent air or smoke for use in natural & smoke ventilation.
Aortic regurgitation (AR) is the diastolic flow of blood from the aorta into the left ventricle (LV). Regurgitation is due to incompetence of the aortic valve or any disturbance of the valvular apparatus (eg, leaflets, annulus of the aorta) resulting in the diastolic flow of blood into the left ventricular chamber. Abnormalities of the ascending aorta, in the absence of valve pathology, may also cause AR.