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This value depends on the diameter of the blood vessels, blood density, blood viscosity, and relevant parameters.
We demonstrate the effectiveness of the method in applications involving 2D vortex-induced vibrations (VIV) and in 3D flexible arteries with structural density close to blood density.
Since blood density was 1 g/ml, pulmonary blood weight of animals included in our experiments was probably around 100 g and thus explains the bias reported above.
Since the blood density is ρ b = 1.06 g/cm3, this yields the blood mass flow Φ b = ρ b Φ bV = 2 g/s. 2 g/s.
For the current study, blood density ρ b =1,060 kg/m3, the average blood velocity [23] v 0≈10 cm/s, blood vessel diameter [23] l≈3 mm, and dynamic viscosity of blood η≈3.5×10−3 kg/(m.s), the Reynolds number R e≈121, which is well within the laminar flow regime.
Due to the heart pulsing, the blood flow is pulsed, but we approximate it by a stationary flow ( {varPhi}_b={rho}_b{S}_s{overline{v}}_b ), where ρ b is the blood density, S s = π R 2 is the stent's cross section and ( {overline{v}}_b ) is the average blood velocity through the stent.
Similar(36)
And while the reader develops a measure of sympathy for Will, who seems to be teetering on the brink of a breakdown -- his mind "hovers on hummingbird wings," rarely pausing, rarely giving him a moment's peace -- he and his traveling companion, Hand, lack the flesh-and-blood density, the ferocious individuality of the real-life people in "Staggering Genius".
Mononuclear cells were isolated from peripheral blood by density centrifugation over a Ficoll-Paque solution (density 1.077 g/mL).
Indeed, at early gestation, bovine conceptuses after IVF and culture displayed placentas with decreased blood vessel density, while at late gestation, placentas had greater blood vessel density [ 15, 127 ].
The latter is unlikely, as there was no significant difference in the dermal blood vessel density between the three groups, and, indeed, in previous studies we have found no reduction in blood vessel density in individuals with diabetes (9).
Although differences in blood vessel density among the groups were not statistically significant, interestingly we did observe an overall trend of elevated blood vessel density with increased expression of α3.
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