Results 41 to 50 of about 1,074,318 (296)

Redox Signaling through DNA [PDF]

open access: yes, 2016
Biological electron transfer reactions between metal cofactors are critical to many essential processes within the cell. Duplex DNA is, moreover, capable of mediating the transport of charge through its π-stacked nitrogenous bases.
Barton, Jacqueline K.   +2 more
core   +1 more source

Enhanced reaction kinetics in biological cells

open access: yes, 2008
The cell cytoskeleton is a striking example of "active" medium driven out-of-equilibrium by ATP hydrolysis. Such activity has been shown recently to have a spectacular impact on the mechanical and rheological properties of the cellular medium, as well as
A Ajdari   +33 more
core   +1 more source

Modelling cytoskeletal traffic: an interplay between passive diffusion and active transport [PDF]

open access: yes, 2012
We introduce the totally asymmetric exclusion process with Langmuir kinetics (TASEP-LK) on a network as a microscopic model for active motor protein transport on the cytoskeleton, immersed in the diffusive cytoplasm.
Kern, N., Neri, I., Parmeggiani, A.
core   +3 more sources

Non-Markovian Persistent Random Walk Model for Intracellular Transport

open access: yesFractal and Fractional, 2023
Transport of vesicles and organelles inside cells consists of constant-speed bidirectional movement along cytoskeletal filaments interspersed by periods of idling. This transport shows many features of anomalous diffusion. In this paper, we develop a non-
Nickolay Korabel   +3 more
doaj   +1 more source

Bigraphical models for protein and membrane interactions [PDF]

open access: yes, 2009
We present a bigraphical framework suited for modeling biological systems both at protein level and at membrane level. We characterize formally bigraphs corresponding to biologically meaningful systems, and bigraphic rewriting rules representing ...
Davide Grohmann   +3 more
core   +5 more sources

The Process of Thermodialysis and Some of its Possible Consequences in Biology

open access: yesCHIMIA, 1976
The flow of thermal energy in liquids is associated with the development of ponderomotive forces. In non-isothermal ionic or molecular solutions a drift of the disperse phase is thus produced (thermal diffusion).
F.S. Gaeta, D.G. Mita
doaj   +1 more source

Active Materials: Biological Benchmarks and Transport Limitations

open access: yes, 2022
Abstract Recent works in cellular and molecular biophysics suggest that activity can drive dramatic changes to the properties of living materials and their fluctuations. Experimental investigations of active materials pose some challenges.
openaire   +2 more sources

A Drone-Based Bioaerosol Sampling System to Monitor Ice Nucleation Particles in the Lower Atmosphere

open access: yesRemote Sensing, 2020
Terrestrial ecosystems can influence atmospheric processes by contributing a huge variety of biological aerosols (bioaerosols) to the environment. Several types of biological particles, such as pollen grains, fungal spores, and bacteria cells, trigger ...
Paul Bieber   +6 more
doaj   +1 more source

Diffusion of self-propelled particles in complex media

open access: yes, 2018
The diffusion of active microscopic organisms in complex environments plays an important role in a wide range of biological phenomena from cell colony growth to single organism transport.
Alexander-Katz, Alfredo   +2 more
core   +1 more source

Review: Interactions of Active Colloids with Passive Tracers

open access: yesCondensed Matter, 2019
Collective phenomena existing universally in both biological systems and artificial active matter are increasingly attracting interest. The interactions can be grouped into active-active and active-passive ones, where the reports on the purely active ...
Linlin Wang, Juliane Simmchen
doaj   +1 more source

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