16 research outputs found
Two-dimensional resistivity structure of the fault associated with the 2000 Western Tottori earthquake
Surface deformations associated with the October 2004 Mid-Niigata earthquake: Description and discussion
Characteristics of the surface ruptures associated with the 2016 Kumamoto earthquake sequence, central Kyushu, Japan
Detection of Patency of Internal Mammary Artery Grafts to the Left Anterior Descending Artery by Transthoracic Doppler Echocardiography
Doppler echocardiographic features of coronary arteriovenous fistula. Complementary roles of cross sectional echocardiography and the Doppler technique.
Effects of multiple stenoses and post-stenotic dilatation on non-Newtonian blood flow in a small arteries
Fully-developed one-dimensional Casson flow through a single vessel of varying radius is proposed as a model of low Reynolds number blood flow in small stenosed coronary arteries. A formula for the resistance-to-flow ratio is derived, and results for yield stresses of τ0=0, 0.005 and 0.01 Nm-2, viscosities of μ=3.45×10−3, 4.00×10−3 and 4.55×10−3 Pa·s and fluxes of 2.73×10−6, ×10−5 and ×10−4 m3s−1 are determined for a segment of 0.45 mm radius and 45 mm length, with 15 mm abnormalities at each end where the radius varies by up to ±0.225 mm. When τ0=0.005 Nm-2, μ=4×10−3 Pa·s and Q=1, the numerical values of the resistance-to-flow ratio vary from[`(l)] = 0.525=0525, when the maximum radii of the two abnormal segments are both 0.675 mm, to[`(l)] = 3.06=306, when the minimum radii are both 0.225 mm. The resistance-to-flow ratio moves closer to unity as yield stress increases or as blood viscosity or flux decreases, and the magnitude of these alterations is greatest for yield stress and least for flux.B. Pincombe, J. Mazumdar and I. Hamilton-Crai