Results 81 to 90 of about 1,826,618 (330)

Excitable Delaunay triangulations

, 2011
In an excitable Delaunay triangulation every node takes three states (resting, excited and refractory) and updates its state in discrete time depending on a ratio of excited neighbours. All nodes update their states in parallel.
Andrew Adamatzky, Yi Lin
core   +1 more source

Nuclear Excitation by Electron Capture in Excited Ions

Physical Review Letters, 2022
A nuclear excitation following the capture of an electron in an empty orbital has been recently observed for the first time. So far, the evaluation of the cross section of the process has been carried out widely using the assumption that the ion is in its electronic ground state prior to the capture. We show that by lifting this restriction new capture
Simone Gargiulo, Ivan Madan, Fabrizio Carbone   +2 more
openaire   +3 more sources

Complex Dynamics of Propagating Waves in a Two-Dimensional Neural Field

Frontiers in Computational Neuroscience, 2019
Propagating waves with complex dynamics have been widely observed in neural population activity. To understand their formation mechanisms, we investigate a type of two-dimensional neural field model by systematically varying its recurrent excitatory and ...
Daniel Naoumenko, Pulin Gong, Pulin Gong
doaj   +1 more source

Planform Geometry and Excitation Effects of PVDF-Based Vibration Energy Harvesters

Energies, 2021
In the present paper, we report a systematic investigation of planform geometry and excitation level effects on the dynamics and power generation characteristics of polyvinylidene difluoride (PVDF)-based cantilevered vibration energy harvesters ...
Jie Wang, Mostafa R. A. Nabawy, Andrea Cioncolini, Alistair Revell, Samuel Weigert   +4 more
doaj   +1 more source

The nicotinamide hypothesis revisited—plant defense signaling integrating PARP, nicotinamide, nicotinic acid, epigenetics, and glutathione

FEBS Letters, EarlyView.
Nicotinamide (NIC) and nicotinic acid (NIA) are proposed as stress signaling compounds in plants. Oxidative stress may lead to single strand breaks (SSB) in DNA, which activate poly(ADP‐ribose) polymerase (PARP). NIC and NIA are then formed from NAD. NIC and NIA can promote epigenetic changes leading to the expression of defense genes specific for the ...
Torkel Berglund, Anna B. Ohlsson
wiley   +1 more source

Core excitation in Ozone localized to one of two symmetry-equivalent chemical bonds - molecular alignment through vibronic coupling

, 2004
Core excitation from terminal oxygen O$_T$ in O$_3$ is shown to be an excitation from a localized core orbital to a localized valence orbital. The valence orbital is localized to one of the two equivalent chemical bonds.
A. Naves de Brito, K. Wiesner, N. Kosugi, O. Björneholm, S. L. Sorensen, Stranges S., Wiesner K.   +6 more
core   +1 more source

Identifying the quantum correlations in light-harvesting complexes [PDF]

, 2010
One of the major efforts in the quantum biological program is to subject biological systems to standard tests or measures of quantumness. These tests and measures should elucidate if non-trivial quantum effects may be present in biological systems.
Bradler, Kamil, Uskov, Dmitry B., Vinjanampathy, Sai, Wilde, Mark M.   +3 more
core   +3 more sources

Model-Predicted Balance Between Neural Excitation and Inhibition Was Maintained Despite of Age-Related Decline in Sensory Evoked Local Field Potential in Rat Barrel Cortex

Frontiers in Systems Neuroscience, 2020
The balance between neural excitation and inhibition has been shown to be crucial for normal brain function. However, it is unclear whether this balance is maintained through healthy aging.
Sungmin Kang, Sungmin Kang, Yurie Hayashi, Michael Bruyns-Haylett, Evangelos Delivopoulos, Evangelos Delivopoulos, Ying Zheng, Ying Zheng   +7 more
doaj   +1 more source

Single cis‐elements in brassinosteroid‐induced upregulated genes are insufficient to recruit both redox states of the BIL1/BZR1 DNA‐binding domain

FEBS Letters, EarlyView.
Phytohormone brassinosteroid‐induced gene regulation by the transcription factor BIL1/BZR1 involves redox‐dependent DNA‐binding alternation and interaction with the transcription factor PIF4. The reduced BIL1/BZR1 dimer binds preferred cis‐elements, while oxidation alters its oligomerization state and disrupts DNA‐binding ability.
Shohei Nosaki, Masae Ohtsuka, Takeshi Nakano, Masaru Tanokura, Takuya Miyakawa   +4 more
wiley   +1 more source

Quantum state transfer through a spin chain in a multi-excitation subspace

, 2012
We investigate the quality of quantum state transfer through a uniformly coupled antiferromagnetic spin chain in a multi-excitation subspace. The fidelity of state transfer using multi-excitation channels is found to compare well with communication ...
A. Bayat, C. Allen Bishop, Rui-Song Ma, Yong-Jian Gu, Zhao-Ming Wang   +4 more
core   +1 more source