The article substantiates the possibility of using frequency drives in agricultural production, shows promising areas their application, positive qualities drives, which make it possible to confidently compete with gear that are widespread agriculture. It is indicated use a electric drive can reduce current and mechanical loads due soft start. Due additional control inputs converter, synchroniz...

Brazilian Journal of otorhinolaryngology 77 (6) novemBer/DecemBer 2011 http://www.bjorl.org.br / e-mail: [email protected] Chronic rhinosinusitis (CRS) is a common disease resulting from inflammation of the sinonasal mucosa. The underlying cause of the inflammation is multifactorial, with both genetic and environmental contributions. Guidelines published by the AAOHNS in 2007 and a Cochra...