Results 21 to 30 of about 196,073 (265)
Discrete multi-physics: A mesh-free model of blood flow in flexible biological valve including solid aggregate formation. [PDF]
PLoS ONE, 2017 We propose a mesh-free and discrete (particle-based) multi-physics approach for modelling the hydrodynamics in flexible biological valves. In the first part of this study, the method is successfully validated against both traditional modelling techniques
Mostapha Ariane +6 more
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Little information loss with red-green color deficient vision in natural environments
iScience, 2023 Summary: Inherited color vision deficiency affects red-green discrimination in about one in twelve men from European populations. Its effects have been studied mainly in primitive foraging but also in detecting blushing and breaking camouflage. Yet there
David H. Foster, Sérgio M.C. Nascimento
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Size matters for nonlinear (protein) wave patterns
New Journal of Physics, 2018 Pattern formation and selection are fundamental, omnipresent principles in nature—from small cells up to geological scales. In E. coli bacteria, for example, self-organized pole-to-pole oscillations of Min proteins—resembling a short standing wave—ensure
Fabian Bergmann +2 more
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Physics of Shock and Physiological Effects on Biological Systems
Proceedings, 2023 Shock vibrations from handheld tools have long since been suspected to cause an increased risk of hand-arm vibration syndrome. This paper gives an introduction to its physical origin and transformation of the hand. Also, the pathophysiological effects on
Hans Lindell +2 more
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Chiral active matter: microscopic ‘torque dipoles’ have more than one hydrodynamic description
New Journal of Physics, 2019 Many biological systems, such as bacterial suspensions and actomyosin networks, form polar liquid crystals. These systems are ‘active’ or far-from-equilibrium, due to local forcing of the solvent by the constituent particles.
Tomer Markovich +2 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT The medical burdens of sickle cell disease (SCD) and transfusion‐dependent β‐thalassemia (TDT) are chronic and cumulative, even in children. Yet the effects expand beyond medications and healthcare visits due to their impacts on school attendance, academic performance, and peer engagement.
Mary Ann Etling +2 more
wiley +1 more source
Stress granule formation via ATP depletion-triggered phase separation
New Journal of Physics, 2018 Stress granules (SG) are droplets of proteins and RNA that form in the cell cytoplasm during stress conditions. We consider minimal models of stress granule formation based on the mechanism of phase separation regulated by ATP-driven chemical reactions ...
Jean David Wurtz, Chiu Fan Lee
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Heavy menstrual bleeding (HMB) is a common condition among adolescents and young adults (AYAs) and is the leading cause of iron deficiency anemia (IDA) in this population. Growing evidence suggests that social determinants of health (SDOH) influence menstrual bleeding patterns, access to care, and treatment. However, no studies have
Maria Carter‐Febres +6 more
wiley +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS 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
Physical phase field model for phagocytosis
New Journal of PhysicsWe propose and study a simple, physical model for phagocytosis, i.e. the active, actin-mediated uptake of micron-sized particles by biological cells.
Benjamin Winkler +3 more
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