Results 21 to 30 of about 766,114 (261)
Dark state population determines magnetic sensitivity in radical pair magnetoreception model [PDF]
Scientific Reports, 2016 AbstractWhat is the real role of the quantum coherence and entanglement in the radical pair (RP) compass and what determines the singlet yield have not been fully understood. In this paper, we find that the dark states of the two-electron Zeeman energy operator (TEZE) play an important role in the RP compass.
Bao-Ming Xu, Jian Zou
openaire +3 more sources
Avian ultraviolet/violet cones identified as probable magnetoreceptors. [PDF]
PLoS ONE, 2011 BACKGROUND: The Radical-Pair-Model postulates that the reception of magnetic compass directions in birds is based on spin-chemical reactions in specialized photopigments in the eye, with cryptochromes discussed as candidate molecules.
Christine Niessner +7 more
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Entangled radicals may explain lithium effects on hyperactivity
Scientific Reports, 2021 It is known that bipolar disorder and its lithium treatment involve the modulation of oxidative stress. Moreover, it has been observed that lithium’s effects are isotope-dependent.
Hadi Zadeh-Haghighi, Christoph Simon
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Introduction to a special issue of Magnetic Resonance in honour of Robert Kaptein at the occasion of his 80th birthday [PDF]
Magnetic Resonance, 2021 This publication, in honour of Robert Kaptein's 80th birthday, contains contributions from colleagues, many of whom have worked with him, and others who admire his work and have been stimulated by his research.
R. Boelens +3 more
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Scientific Reports, 2021 Many animals display sensitivity to external magnetic field, but it is only in the simplest organisms that the sensing mechanism is understood. Here we report on behavioural experiments where American cockroaches (Periplaneta americana) were subjected to
Kai Sheng Lee +2 more
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Radical pairs can explain magnetic field and lithium effects on the circadian clock
Scientific Reports, 2022 Drosophila’s circadian clock can be perturbed by magnetic fields, as well as by lithium administration. Cryptochromes are critical for the circadian clock. Further, the radical pairs in cryptochrome also can explain magnetoreception in animals.
Hadi Zadeh-Haghighi, Christoph Simon
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The sensitivity of a radical pair compass magnetoreceptor can be significantly amplified by radical scavengers [PDF]
Scientific Reports, 2017 Birds have a remarkable ability to obtain navigational information from the Earth’s magnetic field. The primary detection mechanism of this compass sense is uncertain but appears to involve the quantum spin dynamics of radical pairs formed transiently in
D. Kattnig, D. Kattnig, P. Hore
semanticscholar +1 more source
Quantum Reports, 2021 The flavoprotein CRYPTOCHROME (CRY) is now generally believed to be a magnetosensor, providing geomagnetic information via a quantum effect on a light-initiated radical pair reaction.
Adam Bradlaugh +3 more
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Amplification of weak magnetic field effects on oscillating reactions
Scientific Reports, 2021 We explore the possibility that chemical feedback and autocatalysis in oscillating chemical reactions could amplify weak magnetic field effects on the rate constant of one of the constituent reactions, assumed to proceed via a radical pair mechanism ...
Thomas C. Player +3 more
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Journal of Physical Chemistry Letters, 2020 A visual magnetic sense in migratory birds has been hypothesized to rely on a radical pair reaction in the protein cryptochrome. In this model, magnetic sensitivity originates from coherent spin dynamics, as the radicals couple to magnetic nuclei via ...
N. Babcock, D. Kattnig
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