Results 21 to 30 of about 1,385,865 (356)

Symmetry-Breaking Motility [PDF]

open access: yesPhysical Review Letters, 2005
Locomotion of bacteria by actin polymerization, and in vitro motion of spherical beads coated with a protein catalyzing polymerization, are examples of active motility. Starting from a simple model of forces locally normal to the surface of a bead, we construct a phenomenological equation for its motion.
Allen S. Lee   +3 more
openaire   +4 more sources

Semaphorin Breaks Symmetry [PDF]

open access: yesNeuron, 2011
Axon-dendrite polarity is likely instructed by extrinsic cues in the developing nervous system, though the mechanisms governing this process remain to be fully elucidated. In this issue of Neuron, Shelly et al. show that the axon guidance cue Semaphorin 3A can promote dendrite growth by inhibiting axon specification.
Audrey S. Howell, Kang Shen
openaire   +3 more sources

Selection rules for breaking selection rules

open access: yesNew Journal of Physics, 2021
Floquet systems often exhibit dynamical symmetries (DS) that govern the time-dependent dynamics and result in selection rules. When a DS is broken, selection rule deviations are expected.
Matan Even Tzur   +3 more
doaj   +1 more source

Visualizing the Breaking of Symmetry [PDF]

open access: yesDevelopmental Cell, 2006
Axon specification is a hallmark of neuron polarization. Although several models have been proposed, few studies have provided clues about polarization events in real time. Using time-lapse imaging, a recent study described visualizing symmetry-breaking events during this process.
Bing Ye, Yuh Nung Jan
openaire   +3 more sources

Breaking symmetry in myxobacteria [PDF]

open access: yesCurrent Biology, 2004
O.A.I. was supported by a Howard Hughes predoctoral fellowship. G.O. was supported by National Science Foundation grant DMS-9972826 and National Institutes of Health grant GM59875-02. D.K. was supported by National Institutes of Health Grant GM23441.
Oleg A. Igoshin   +2 more
openaire   +3 more sources

Aromatic-bridged and meso-meso-linked BF2-smaragdyrin dimers exhibit fast decays in polar solvents by symmetry-breaking charge transfer

open access: yesCommunications Chemistry, 2023
Symmetry breaking charge separations have been found to be important for charge transfer in bacteriochlorophyll pairs in photosynthetic reaction centers, but engineering symmetry breaking charge separations in artificial dimers of related chromophores is
Lingbo Wen   +8 more
doaj   +1 more source

Hsp90: Breaking the Symmetry [PDF]

open access: yesMolecular Cell, 2015
Hsp90 chaperones receive much attention due to their role in cancer and other pathological conditions, and a tremendous effort of many laboratories has contributed in the past decades to considerable progress in the understanding of their functions. Hsp90 chaperones exist as dimers and, with the help of cochaperones, promote the folding of numerous ...
Laura Le Breton, Matthias P. Mayer
openaire   +3 more sources

Applications of Symmetry Breaking in Plasmonics

open access: yesSymmetry, 2020
Plasmonics is one of the most used domains for applications to optical devices, biological and chemical sensing, and non-linear optics, for instance. Indeed, plasmonics enables confining the electromagnetic field at the nanoscale.
G. Barbillon, A. Ivanov, A. Sarychev
semanticscholar   +1 more source

Breaking of topological symmetry [PDF]

open access: yesPhysics Letters B, 1993
12 ...
José M. F. Labastida, M. Alvarez
openaire   +4 more sources

Symmetry Breaking in Tournaments [PDF]

open access: yesElectronic Notes in Discrete Mathematics, 2011
We provide upper bounds for the determining number and the metric dimension of tournaments. A set of vertices $S \subseteq V(T)$ is a determining set for a tournament $T$ if every nontrivial automorphism of $T$ moves at least one vertex of $S$, while $S$ is a resolving set for $T$ if every two distinct vertices in $T$ have different distances to some ...
openaire   +4 more sources

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