Results 41 to 50 of about 338,751 (320)
The filamentation of the laser beam as a labyrinth instability
, 2015 At incident powers much higher than the threshold for filamentation a pulse from a high-power laser generates in the transversal plane a complex structure. It consists of randomly meandering stripes defining connected regions where the field intensity is
Spineanu, Florin, Vlad, Madalina
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Dissecting the dynamics of signaling events in the BMP, WNT, and NODAL cascade during self-organized fate patterning in human gastruloids. [PDF]
, 2019 During gastrulation, the pluripotent epiblast self-organizes into the 3 germ layers-endoderm, mesoderm and ectoderm, which eventually form the entire embryo.
Chhabra, Sapna +4 more
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FEBS Letters, EarlyView.Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi +5 more
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Amplification without instability: applying fluid dynamical insights in chemistry and biology
New Journal of Physics, 2013 While amplification of small perturbations often arises from instability, transient amplification is possible locally even in asymptotically stable systems.
Jonathan H McCoy
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Materials Today Bio, 2022 Immune checkpoint blockade has been proven to have great therapeutic potential and has revolutionized the treatment of tumors. However, various limitations remain, including the low response rate of exhausted T cells and mutual regulation of multiple ...
Zhimin Han +7 more
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Instability mechanisms of repelling peak solutions in a multi-variable activator–inhibitor system
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2022 We study the linear stability properties of spatially localized single- and multi-peak states generated in a subcritical Turing bifurcation in the Meinhardt model of branching. In one spatial dimension, these states are organized in a foliated snaking structure owing to peak–peak repulsion but are shown to be all linearly unstable, with the number of ...
Edgar Knobloch, Arik Yochelis
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Reciprocal control of viral infection and phosphoinositide dynamics
FEBS Letters, EarlyView.Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
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Ожирение и метаболизм, 2011 The aim of the study was to assess the effect of metformin plus lifestyle modification on procoagulant and proinflammatory state associated with metabolic syndrome in postmenopausal women. Materials and methods: The 12-month prospective, open, randomized
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A stability index for travelling waves in activator-inhibitor systems
Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 2019 AbstractWe consider the stability of nonlinear travelling waves in a class of activator-inhibitor systems. The eigenvalue equation arising from linearizing about the wave is seen to preserve the manifold of Lagrangian planes for a nonstandard symplectic form. This allows us to define a Maslov index for the wave corresponding to the spatial evolution of
Cornwell, Paul +1 more
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Analyzing critical propagation in a reaction-diffusion-advection model using unstable slow waves
, 2014 The effect of advection on the critical minimal speed of traveling waves is studied. Previous theoretical studies estimated the effect on the velocity of stable fast waves and predicted the existence of a critical advection strength below which ...
Dahlem, Markus A. +2 more
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