Results 111 to 120 of about 6,114,153 (354)
Advanced Science, EarlyView.A combined optical coherence tomography angiography and fluorescence imaging approach assesses tumor angiogenesis and drug effects in a novel zebrafish cancer model. By analyzing 3D vasculature data, the two imaging methods complement each other to quantify blood flow, vessel structure, and drug efficacy.
Marco Andreana +10 more
wiley +1 more source
A non-autonomous bifurcation theory for deterministic scalar differential equations
, 2008 In the extension of the concepts of saddle-node, transcritical and pitchfork bifurcations to the non-autonomous case, one considers the change in the number and attraction properties of the minimal sets for the skew-product flow determined by the initial
C. Núñez, R. Obaya
semanticscholar +1 more source
Advanced Science, EarlyView.This study integrates dual‐reporter genetics, imaging flow cytometry, and single‐cell sequencing to characterize rare bihormonal cells in mouse and human pancreatic islets. Gcg⁺Ins⁺ cells resemble α‐cells rather than transitional states. Cross‐species gene network analysis refines islet cell taxonomy and reveals human‐specific δ‐cell subtypes ...
Xin‐Xin Yu +10 more
wiley +1 more source
Computational algebra for bifurcation theory
Journal of Symbolic Computation, 2005 AbstractWe provide algorithmic methods for the solution of the classification problem of bifurcations by vanishing and non-vanishing derivatives. These methods come from a generalization of standard bases for modules in local rings. We introduce the necessary theory of bifurcations, provide the algorithmic tools, and show the effectiveness of these ...
Karin Gatermann, Serkan Hosten
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Advanced Science, EarlyView.Vascular smooth muscle cells (VSMCs)‐specific deficiency of PP2Acα exacerbates aortic aneurysm and dissection (AAD) by promoting phenotypic switching through AKT1‐mediated phosphorylation and stabilization of Kruppel‐like factor 4 (KLF4). Reduced PP2Acα enhances KLF4 ubiquitination resistance, suppressing VSMC contractile genes and accelerating aortic ...
Wei‐Peng Hu +7 more
wiley +1 more source
Open Mathematics, 2018 This paper investigates the dynamic behavior analysis on the prey-predator model with ratio-dependent Monod-Haldane response function under the homogeneous Dirichlet boundary conditions, which is used to simulate a class of biological system.
Feng Xiaozhou, Song Yi, An Xiaomin
doaj +1 more source
A new method for obtaining eigenvalues of variational inequalities based on bifurcation theory [PDF]
, 1979 Milan Kučera
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Applied bifurcation theory [PDF]
Nature, 1980 Bifurcation Theory and Applications in Scientific Disciplines. Edited by O. Gurel and O.E. Rossler. Pp.708. (New York Academy of Sciences: New York, 1979.) $85.
openaire +2 more sources
Bifurcation theory applied to aircraft motions [PDF]
Bifurcation theory is used to analyze the nonlinear dynamic stability characteristics of single-degree-of-freedom motions of an aircraft or a flap about a trim position.
Hui, W. H., Tobak, M.
core +1 more source
On the existence of steady periodic capillary-gravity stratified water waves [PDF]
, 2013 We prove the existence of small steady periodic capillary-gravity water waves for general stratified flows, where we allow for stagnation points in the flow.
Henry, David, Matioc, Bogdan-Vasile
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