Guinea pig cochlear blood flow was measured before and after systemic normovolemic hemodilution with high molecular weight dextran. Absolute determinations of blood flow (in the cochlea, brain, kidney and lung) were accomplished by use of radioactive-labeled (85Sr or 141Ce) microspheres. Relative measurements of the cochlear blood flow changes were made simultaneously by the use of a laser Dopp...

Common carotid blood flow (CCBF) was measured in 11 anesthetised patients without extracranial arterial disease (nine acute subarachnoid haemorrhages and two cases of head injury). The range-gated Doppler flowmeter with an adjustable range-gated time system and a double transducer probe was used to determine diameter, blood velocity, and blood flow of the common carotid artery. Values were, res...

Using an accurately calibrated flowmeter in the descending thoracic aorta of the dog, a study was made of alterations in aortic flow patterns following intravenous and intra-arterial injections of vasoactive drugs. When injected distal to the flowmeter, vasopressors caused marked backflow while vasodilators raised the level of the lowest portion of the pulsatile flow curve. When injected into t...

In an internal combustion engine, performance, efficiency and emission formation depends on the of air-fuel mixture inside engine cylinder. The fluid flow dynamics plays important role for preparation to obtain better combustion, performance efficiency. This review article discuss rotating (swirl tumble) in premixed spark-ignition its effect turbulence generation flame propagation. Rotating can...