Results 91 to 100 of about 3,181,240 (276)

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

open access: yesFEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai   +9 more
wiley   +1 more source

Active cluster crystals

open access: yesNew Journal of Physics, 2017
We study the appearance and properties of cluster crystals (solids in which the unit cell is occupied by a cluster of particles) in a two-dimensional system of self-propelled active Brownian particles with repulsive interactions.
Jean-Baptiste Delfau   +2 more
doaj   +1 more source

An Integrated Cytoskeletal Model of Neurite Outgrowth

open access: yesFrontiers in Cellular Neuroscience, 2018
Neurite outgrowth underlies the wiring of the nervous system during development and regeneration. Despite a significant body of research, the underlying cytoskeletal mechanics of growth and guidance are not fully understood, and the relative ...
Kyle E. Miller   +4 more
doaj   +1 more source

Dynamics of self-propelled particles passing a bottleneck

open access: yesNew Journal of Physics, 2020
We study the passage of active and passive granular particles through a bottleneck under gravitational bias. The grains are pharmaceutical capsules with spherocylindrical shapes on a vibrating table. The vibrating ground plate is slightly tilted in order
Mahdieh Mohammadi   +5 more
doaj   +1 more source

Linking neutrino oscillations to the nucleosynthesis of elements

open access: yes, 2015
Neutrino interactions with matter play an important role in determining the nucleosynthesis outcome in explosive astrophysical environments such as core-collapse supernovae or mergers of compact objects.
Martinez-Pinedo, Gabriel   +2 more
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Vortex formation and dynamics of defects in active nematic shells

open access: yesNew Journal of Physics, 2017
We present a hydrodynamic model for a thin spherical shell of active nematic liquid crystal with an arbitrary configuration of defects. The active flows generated by defects in the director lead to the formation of stable vortices, analogous to those ...
Diana Khoromskaia, Gareth P Alexander
doaj   +1 more source

Stochastic Stirling Engine Operating in Contact with Active Baths

open access: yesEntropy, 2017
A Stirling engine made of a colloidal particle in contact with a nonequilibrium bath is considered and analyzed with the tools of stochastic energetics. We model the bath by non Gaussian persistent noise acting on the colloidal particle. Depending on the
Ruben Zakine   +3 more
doaj   +1 more source

Defect order in active nematics on a curved surface

open access: yesNew Journal of Physics, 2020
We investigate the effects of extrinsic curvature on the turbulent behavior of a 2D active nematic confined to the surface of a cylinder. The surface of a cylinder has no intrinsic curvature and only extrinsic curvature.
D J G Pearce
doaj   +1 more source

Synthetic Chemotaxis and Collective Behavior in Active Matter

open access: yes, 2018
Conspectus: The ability to navigate in chemical gradients, called chemotaxis, is crucial for the survival of microorganisms. It allows them to find food and to escape from toxins.
Benno Liebchen   +3 more
core   +1 more source

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