Gas tubing -- Soundproofing : Duct acoustics : fundamentals and applications to mufflers and silencers / Erkan Dokumaci, Dokuz Eylül University
2021
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Health facilities -- Soundproofing -- Standards : Sound & vibration 2.0 : design guidelines for health care facilities (2010) / David Sykes, Gregory C. Tocci, William J. Cavanaugh, editors
The sounds heard over the cardiac region produced by the functioning of the heart. There are four distinct sounds: the first occurs at the beginning of SYSTOLE and is heard as a "lubb" sound; the second is produced by the closing of the AORTIC VALVE and PULMONARY VALVE and is heard as a "dupp" sound; the third is produced by vibrations of the ventricular walls when suddenly distended by the rush of blood from the HEART ATRIA; and the fourth is produced by atrial contraction and ventricular filling
Carotid artery -- Sounds : Nursing Assessment. Part 2, The Cardiovascular System. Objective Data. Auscultation of the Carotid arteries and the heart / [produced by Medcom, Inc.]
