Results 41 to 50 of about 207,666 (291)
Upper bound on the biological effects of 50/60 Hz magnetic fields mediated by radical pairs
eLife, 2019 Prolonged exposure to weak (~1 μT) extremely-low-frequency (ELF, 50/60 Hz) magnetic fields has been associated with an increased risk of childhood leukaemia.
PJ Hore
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Spreading Electron Density Thin: Increasing the Chromophore Size in Polyaromatic Wires Decreases Interchromophoric Electronic Coupling [PDF]
, 2018 The development of novel polychromophoric materials using extended polycyclic aromatic hydrocarbons as a single large chromophore holds promise for long-range charge-transfer applications in photovoltaic devices and molecular electronics.
Hossain, Mohammad Mosharraf +4 more
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The radical pair mechanism and the avian chemical compass: Quantum coherence and entanglement [PDF]
International Journal of Quantum Chemistry, 2015 We review the spin radical pair mechanism which is a promising explanation of avian navigation. This mechanism is based on the dependence of product yields on (1) the hyperfine interaction involving electron spins and neighboring nuclear spins and (2) the intensity and orientation of the geomagnetic field.
Zhang, Yiteng +2 more
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Quantum dynamics of the avian compass
, 2014 The ability of migratory birds to orient relative to the Earth's magnetic field is believed to involve a coherent superposition of two spin states of a radical electron pair. However, the mechanism by which this coherence can be maintained in the face of
C. D. Treiber +7 more
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Activation of Cryptochrome 4 from Atlantic Herring
BiologyMarine fish migrate long distances up to hundreds or even thousands of kilometers for various reasons that include seasonal dependencies, feeding, or reproduction. The ability to perceive the geomagnetic field, called magnetoreception, is one of the many
Anders Frederiksen +3 more
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Monte-Carlo wavefunction approach for the spin dynamics of recombining radicals
New Journal of Physics, 2020 We adapt the Monte-Carlo wavefunction (MCWF) approach to treat the open-system spin dynamics of radical pairs subject to spin-selective recombination reactions.
Robert H Keens, Daniel R Kattnig
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Sensitive Chemical Compass Assisted by Quantum Criticality
, 2011 The radical-pair-based chemical reaction could be used by birds for the navigation via the geomagnetic direction. An inherent physical mechanism is that the quantum coherent transition from a singlet state to triplet states of the radical pair could ...
C. P. Sun +6 more
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Biomimetic Ketone Reduction by Disulfide Radical Anion
Molecules, 2021 The conversion of ribonucleosides to 2′-deoxyribonucleosides is catalyzed by ribonucleoside reductase enzymes in nature. One of the key steps in this complex radical mechanism is the reduction of the 3′-ketodeoxynucleotide by a pair of cysteine residues,
Sebastian Barata-Vallejo +5 more
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On the functional window of the avian compass
, 2017 The functional window is an experimentally observed property of the avian compass that refers to its selectivity around the geomagnetic field strength.
Ganguly, Swaroop +3 more
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Quantum Zeno Effect Explains Magnetic-Sensitive Radical-Ion-Pair Reactions
, 2009 Chemical reactions involving radical-ion pairs are ubiquitous in biology, since not only are they at the basis of the photosynthetic reaction chain, but are also assumed to underlie the biochemical magnetic compass used by avian species for navigation ...
C. Cohen-Tannoudji +4 more
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