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5 results for “energy fluctuation”
Thermal site energy fluctuations in photosystem I: New insights from MD/QM/MM calculations
<p>We calculated the site energies of all 96 chlorophylls in a fully atomistic, trimeric and membrane-embedded model of cyanobacterial photosystem I (<a href="https://www.rcsb.org/structure/1JB0">PDB Code: 1JB0</a>). The resulting data set accounts for </p> <ul> <li> <p>thermal fluctuations within the entire photosystem by sampling 40 conformational snapshots from molecular dynamics trajectories.</p> </li> <li> <p>the electrostatic effects of the natural environment on the chlorophyll excitation by means of QM/MM calculations.</p> </li> <li> <p>the multireference nature of chlorophyll excitations by using the high-level DFT/MRCI method in the QM region.</p> </li> </ul> <p>Analysis of the data set reveals thermal fluctuations which prevent the formation of a single prominent energy funnel in the antenna complex. We conclude that energy transfer pathways may form only transiently at physiological temperatures, as thermal fluctuations overcome energy barriers.</p> <p><strong>v1.1.0</strong></p> <p>Added more snapshots for reaction center chlorophylls, results from statistical analysis and excitonic couplings in the point dipole approximation.</p> <p><strong>v1.0.0</strong></p> <p>Site energies, site energy shifts and absorption spectra of each chlorophyll in each snapshot, computed with and without environmental point charges. Structures and newly derived or modified force field parameters are also provided.</p> <p>For a detailed overview of each file, please refer to the README.</p>
Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement
<p>Mechanical energy fluctuation of the segments in the lower limbs during walking has not been fully investigated. It was hypothesised that the segments of the lower limbs may work as a pendulum, i.e., the kinetic and potential energies exchanged out of phase. This study aimed to investigate energy changes and recovery during gait in hip replacement patients. The gait data for 12 participants with total hip replacement and 12 age-matched controls were compared. The kinetic, potential, and rotative energies for the whole lower limb and thigh, calf, and foot, were calculated. The effectiveness of a pendulum effect was analysed. Gait parameters, e.g., walking speeds, cadence, and stride length were calculated. The results showed that the thigh had significant effectiveness as a pendulum during gait with an energy recovery coefficient of approximately 40% while the calf and foot were less like a pendulum during gait. In comparison, energy recoveries of the lower limbs in the two groups were not significantly different. If the centre of the pelvis was considered as approximate to the centre of mass, however, the control group had a higher energy recovery than the total hip replacement group by roughly 10%. This study concluded that the mechanical energy recovery mechanism in the lower limbs during walking exists for two groups.</p>
Mechanical energy fluctuation in lower limbs during walking in participants with and without total hip replacement
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Data used in the publication "High Energy Emissions induced by air density fluctuations of discharges"
<p>This data was used to generate the Figures in the publication "High Energy Emissions induced by air density fluctuations of discharges".</p>
Data Repo for "Crossover of high-energy spin fluctuations from collective triplon excitations to incoherent gapped magnetic modes in the cuprate ladders of Sr14-xCaxCu24O41"
<p>Data set for the paper "Crossover of high-energy spin fluctuations from collective triplon excitations to incoherent gapped magnetic modes in the cuprate ladders of Sr14-xCaxCu24O41"</p> <p>Preprint Available at: https://arxiv.org/abs/2201.05027</p> <p> </p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.