Harmonic vibrations result from the torsional motion imparted on the crankshaft. These harmonics are a function of many factors including frequencies created by the actual combustion and the natural frequencies the metals make under the stresses of combustion and flexing.
A MND is a ND that incorporates revisions and/or mitigation measures in the proposed project that will avoid or mitigate impacts to a point where clearly no significant impacts on the environment would occur.
intermittent mandatory ventilation (IMV). see intermittent mandatory ventilation. intermittent positive-pressure breathing (IPPB). a form of respiratory therapy utilizing a ventilator for the treatment of patients with inadequate breathing.