نتایج جستجو برای: bifurcation ratio
تعداد نتایج: 521639 فیلتر نتایج به سال:
Occlusion of small side branch (SB) may result in significant adverse clinical events. We aim to characterize the predictors of small SB occlusion and incidence of periprocedural myocardial injury (PMI) in coronary bifurcation intervention.Nine hundred twenty-five consecutive patients with 949 bifurcation lesions (SB ≤ 2.0 mm) treated with percutaneous coronary intervention (PCI) were studied....
The branching angle and diameter ratio in epicardial coronary artery bifurcations are two important determinants of atherogenesis. Murray's cubed diameter law and bifurcation angle have been assumed to yield optimal flows through a bifurcation. In contrast, we have recently shown a 7/3 diameter law (HK diameter model), based on minimum energy hypothesis in an entire tree structure. Here, we der...
In this paper, we study the global dynamics of a density-dependent predator-prey system with ratio-dependent functional response. The main features and challenges are that origin model is degenerate equilibrium higher order there multiple positive equilibria. Firstly, local qualitative behavior around explicitly described. Then, based on other equilibria, analysis c...
Bifurcation analysis has many applications in different scientific fields, such as electronics, biology, ecology, and economics. In population deterministic methods of bifurcation are commonly used. contrast, stochastic techniques infrequently employed. Here we establish P-bifurcation behavior (i) a growth model with state-dependent birth rate constant death rate, (ii) logistic carrying capacit...
In this paper, we extend a Leslie–Gower-type predator–prey system with ratio-dependent Holling III functional response considering the cost of antipredator defence due to fear. We study impact fear effect on model, and find that many interesting dynamical properties model can occur when is present. Firstly, relationship between coefficient K positive equilibrium point introduced. Meanwhile, exi...
We consider the instability of the steady, axisymmetric thermocapillary convection in cylindrical liquid bridges. Finite-difference method is applied to compute the steady axisymmetric basic solutions, and to examine their linear instability to three-dimensional modal perturbations. The numerical results show that for liquid bridges of O(1) aspect ratio Γ (=length/radius) the first instability ...
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