Results 31 to 40 of about 104,054 (264)
Clinical and morphological evaluation of coronary bifurcation lesions
Türk Kardiyoloji Derneği Arşivi, 2013 Objectives: We aimed to investigate the anatomical and morphological characterization of coronary bifurcation lesions. Study design: The study population consisted of 542 stable patients who underwent coronary angiography.
Mustafa Kurt +6 more
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Global bifurcation of positive solutions for a class of superlinear elliptic systems
Electronic Journal of Qualitative Theory of Differential Equations, 2023 We are concerned with the global bifurcation of positive solutions for semilinear elliptic systems of the form \begin{equation*} \begin{cases} -\Delta u=\lambda f(u,v) &\text{in}~\Omega,\\ -\Delta v=\lambda g(u,v) &\text{in}~\Omega,\\
Ruyun Ma, Yan Zhu, Yali Zhang
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Hopf-zero bifurcation of Oregonator oscillator with delay
Advances in Difference Equations, 2018 In this paper, we study the Hopf-zero bifurcation of Oregonator oscillator with delay. The interaction coefficient and time delay are taken as two bifurcation parameters. Firstly, we get the normal form by performing a center manifold reduction and using
Yuting Cai, Liqin Liu, Chunrui Zhang
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Research in Cardiovascular Medicine, 2022 Dual-lumen catheter (DLC)-facilitated reverse wire technique is considered a method of last resort for inserting a guidewire into a markedly angulated side branch.
Issei Ota +7 more
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Bifurcation of Nonlinear Equations: II. Dynamic Bifurcation [PDF]
Methods and Applications of Analysis, 2004 [Part 1 appeared ibid., 155--178 (1994; Zbl 1095.47027), see the preceding review.] The authors study dynamic bifurcation when the eigenvalue of the linearized problem has algebraic multiplicity one or two. As in the first part of the work for steady state bifurcations, their key idea is to analyze precisely the effect of the higher-order nondegenerate
Ma, Tian, Wang, Shouhong
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Dynamics of A Discrete-Time Ecogenetic Predator-Prey Model
Communication in Biomathematical Sciences, 2023 This article considers a discrete-time model of two genetically distinguished predator population and one prey population. The existence and nature of the boundary and positive fixed points are examined.
Debasis Mukherjee
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Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research
FEBS Letters, EarlyView.What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley +1 more source
Endovascular repair of aortoiliac aneurysmal disease with the helical iliac bifurcation device and the bifurcated-bifurcated iliac bifurcation device [PDF]
Journal of Vascular Surgery, 2013 Iliac branch device (IBD) treatment of common and internal iliac artery (CIA and IIA) aneurysms has been controversial in the context of available embolization techniques or off-label adjunctive procedures. Two devices exist, a straight IBD (S-IBD) and a helical IBD (H-IBD).
Wong, Shen +5 more
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Recent insights into the molecular mechanism of ubiquinol oxidation by cytochrome bc1
FEBS Open Bio, EarlyView.The review reflects on the mechanism of the catalytic reaction in cytochrome bc1: the electron bifurcation that involves the separation of two electrons derived from the quinol oxidation to opposite sides of the enzyme across the membrane. This review summarizes the long‐standing effort to understand the mechanism of quinol oxidation catalyzed by ...
Anna Wójcik‐Augustyn +2 more
wiley +1 more source
Possibility of Atherosclerosis in an Arterial Bifurcation Model
BioImpacts, 2011 Introduction: Arterial bifurcations are susceptible locations for formation of atherosclerotic plaques. In the present study, steady blood flow is investigated in a bifurcation model with a non-planar branch.
Omid Arjmandi-Tash +2 more
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