Results 21 to 30 of about 104,054 (264)

Relationship between modifiable atherosclerotic cardiovascular risk factors and coronary artery bifurcation lesion

open access: yesMedical Journal of Babylon, 2023
Background: Modifiable atherosclerotic cardiovascular disease risk factors are hypertension, diabetes mellitus, dyslipidemia, cigarette smoking, and obesity; the term coronary artery bifurcation is used when a coronary artery divides into two ...
Ameer Ahmad Abd AL-Ameer Aljubawii   +2 more
doaj   +1 more source

Behavior Analysis of a Class of Discrete-Time Dynamical System with Capture Rate

open access: yesMathematics, 2022
In this paper, we study the stability and bifurcation analysis of a class of discrete-time dynamical system with capture rate. The local stability of the system at equilibrium points are discussed.
Xiongxiong Du, Xiaoling Han, Ceyu Lei
doaj   +1 more source

Computational Analysis and Bifurcation of Regular and Chaotic Ca2+ Oscillations

open access: yesMathematics, 2021
This study investigated the stability and bifurcation of a nonlinear system model developed by Marhl et al. based on the total Ca2+ concentration among three different Ca2+ stores.
Xinxin Qie, Quanbao Ji
doaj   +1 more source

Bifurcation and criticality [PDF]

open access: yesJournal of Statistical Mechanics: Theory and Experiment, 2019
Abstract Equilibrium and nonequilibrium systems exhibit power-law singularities close to their critical and bifurcation points respectively. A recent study has shown that biochemical nonequilibrium models with positive feedback belong to the universality class of the mean-field Ising model.
Bose, Indrani, Ghosh, Sayantari
openaire   +3 more sources

Study on the Compatibility of Multi-Bifurcations by Simulations of Pattern Formation

open access: yesIEEE Access, 2019
Bifurcation is considered the main mathematical mechanism for the formation of spatial self-organizing patterns in many studies. When bifurcation was initially defined, only the transition of the system from stable state to unstable state or from uniform
Feifan Zhang   +4 more
doaj   +1 more source

Bifurcation phenomena in magnetically confined toroidal plasmas

open access: yesAdvances in Physics: X, 2020
Bifurcation phenomena observed in turbulence and transport, in topology of magnetic field and MHD, and the interplay between turbulence and MHD bifurcation in magnetically confined toroidal plasmas are reviewed.
K. Ida
doaj   +1 more source

Electron bifurcation [PDF]

open access: yesCurrent Opinion in Chemical Biology, 2016
Electron bifurcation is the recently recognized third mechanism of biological energy conservation. It simultaneously couples exergonic and endergonic oxidation-reduction reactions to circumvent thermodynamic barriers and minimize free energy loss.
John W, Peters   +4 more
openaire   +2 more sources

Bifurcations of a Ratio-Dependent Holling-Tanner System with Refuge and Constant Harvesting

open access: yesAbstract and Applied Analysis, 2013
The bifurcation properties of a predator prey system with refuge and constant harvesting are investigated. The number of the equilibria and the properties of the system will change due to refuge and harvesting, which leads to the occurrence of several ...
Xia Liu, Yepeng Xing
doaj   +1 more source

Bifurcation Configuration Is an Independent Risk Factor for Aneurysm Rupture Irrespective of Location

open access: yesFrontiers in Neurology, 2019
Background: Bifurcation and sidewall aneurysms have different rupture risks, but whether this difference comes from the location of the aneurysm is not clear.
Qinglin Liu   +11 more
doaj   +1 more source

A Bifurcation Theorem [PDF]

open access: yesProceedings of the American Mathematical Society, 1964
A description of the classical bifurcation problem will be found in Minorsky [1, Chapter V] and Andronov and Chaikin [2, Chapter 6]. Here the functions fi and f2 are required to be analytic and the proof depends on the series expansion guaranteed by the analyticity. In [3, Chapter IV, ?6], K. 0.
openaire   +1 more source

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