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2,353 results for “channel”
Model data for "Flow Separation and Increased Drag Coefficient in Estuarine Channels with Curvature"
<p>These are the model data we generated using ROMS and analyzed for the journal article "Increased Drag Coefficient in Estuarine Channels with Curvature". Files include 8 sinuous channel models and 2 straight channels. sinuous_channel_1.nc and straight_channel_1.nc are the pair of models analyzed in section 3. sinuous_channel_1_avg.nc and straight_channel_1_avg.nc are the one-hour average result. sinuous_channel_2_avg.nc and straight_channel_2_avg.nc are the pair of deep channel models. sinuous_channel_3_avg.nc and others are the other different sinuous channel models.</p>
Number of channels involved following a break in the EU DEMO HCPB and WCLL BB FW
<p>Excel file reporting the number of involved FW channels following a break in the FW for the EU DEMO HCPB and WCLL Breeding Blanket concepts. The file also reports the resulting flow area.</p> <p>Different break sizes are assumed: 0.01 m², 0.1 m² (small breaks), 1 m², 2 m², 5 m² (large breaks).</p> <p>Two direction of break propagation are considered: poloidal first, then toroidal (approach 1); toroidal first, then poloidal (approach 2)</p>
Underlying data for "Global alignment and assessment of TRP channel transmembrane domain structures to explore functional mechanisms"
<p><strong>Output Files from Structural Alignment of TRP Channels</strong><br> The archive contains the key output files resulting from the structural alignment of members of the TRP channel family described in "Global alignment and assessment of TRP channel transmembrane domain structures to explore functional mechanisms", Huffer et al., (2020), eLife.</p> <p><strong>Contents of trp_struct_align_outputs.tar.gz</strong><br> <em>Aligned_structures</em><br> For each alignment where the transmembrane (TM) domain of the mobile structure was aligned to the TM domain of the stationary/reference structure (6co7):<br> 1) mobile_stationary_full_align.pdb: aligned based on Fr-TM-Align output matrix, contains all residues<br> 2) mobile_stationary_tmem_align.pdb: aligned based on Fr-TM-Align output matrix, contains only TM residues used for alignment<br> 3) mobile_stationary_hole.pdb: aligned based on Fr-TM-Align output matrix, contains HOLE profile of mobile structure</p> <p><em>Alignments</em><br> Multiple sequence alignments constructed using the TM domain of each structure as the stationary/reference structure, with all other structures aligned pairwise.<br> 1) stationary_full.ali: Full multiple sequence alignment containing all TM residues from all stationary and mobile structures.<br> 2) stationary_nogap.ali: Multiple sequence alignment containing all TM residues from the stationary structure. Any gaps in the stationary structure removed, which removes any residue in any mobile structure that does not align to the stationary/reference structure.</p> <p><em>Fr-TM-Align_outputs</em><br> - frtmalign_output.csv: contains all information from Fr-TM-Align output files for each pairwise alignment of TM domains, including PDB IDs of mobile and stationary structures, lengths of mobile and stationary structures, length of pairwise alignment sequence, RMSD of alignment, TM-score of alignment, and sequence identity of alignment.<br> - aligned_length.csv, RMSD.csv, sequence_identity.csv, and TM_score.csv: csv files containing the specified values for all pairwise alignments of TM domains, with the mobile structure in rows and stationary structure in columns</p> <p><strong>Reproducibility</strong><br> Code to reproduce this alignment and analysis is available on GitHub at: <a href="https://github.com/kehuffer/TRP_Structural_Alignment">https://github.com/kehuffer/TRP_Structural_Alignment</a></p>
Long-term nitrogen addition alters the community and energy channel but not diversity of soil nematodes in a subtropical forest
Summary <ol> <li>Research has indicated that increases in nitrogen (N) deposition can greatly affect ecosystem processes and functions. There is limited information about the effects of long-term N addition on soil nematodes and their functional composition, although nematodes are the most abundant multicellular animals on Earth.</li> <li>We conducted a field experiment in 2004 with four levels of N addition (0, 60, 120, and 240 kg N ha<sup>-1 </sup>yr<sup>-1</sup>) in a subtropical <i>Cunninghamia lanceolata</i> forest. Soil samples with three depths (0-20, 20-40 and 40-60 cm) were collected and the community structure, diversity and trophic groups of soil nematodes were determined in 2014.</li> <li>N addition significantly increased the abundance of bacterial- and fungal-feeding nematodes, but decreased the abundance of plant-feeding nematodes at the 0-20 cm soil layer. Accordingly, the plant parasite index and enrichment index decreased but the basal index and channel index increased, which weaken the importance of the plant-based energy channel, but enhance the importance of the fungal-based energy channel. N addition had no effects on the diversity of soil nematodes in three soil depths. Structural equation modeling analysis indicated that N loading directly changed plant-feeding (total <i>r<sup>2</sup></i>=0.42) nematodes, or indirectly affected bacterial- (<i>r<sup>2</sup></i>=0.43), fungal- (<i>r<sup>2</sup></i>=0.31) and plant-feeding nematodes via change soil nutrients, soil water content and pH.</li> <li>These findings suggest that N addition can change the community structure and energy channels soil nematodes, which would affect soil processes and food web functions in forest soils under future environmental change scenarios.</li> </ol>
Data from: Nonlinearities between inhibition and T-type calcium channel activity bidirectionally regulate thalamic oscillations
<p>Absence seizures result from 3-5 Hz generalized thalamocortical oscillations that depend on highly regulated inhibitory neurotransmission in the thalamus. Efficient reuptake of the inhibitory neurotransmitter GABA is essential, and reuptake failure worsens seizures. Here, we show that blocking GABA transporters (GATs) in acute brain slices containing key parts of the thalamocortical seizure network modulates epileptiform activity. As expected, we found that blocking either GAT1 or GAT3 prolonged oscillations. However, blocking both GATs unexpectedly suppressed oscillations. Integrating experimental observations into single-neuron and network-level computational models shows how a non-linear dependence of T-type calcium channel opening on GABA<sub>B</sub> receptor activity regulates network oscillations. Receptor activity that is either too brief or too protracted fails to sufficiently open T-type channels necessary for sustaining oscillations. Only within a narrow range does prolonging GABA<sub>B</sub> receptor activity promote channel opening and intensify oscillations. These results have implications for therapeutics that modulate GABA transporters.</p>
High Resolution Fundus Image Database for Monomodal Single-Channel Image Registration of Thin Features
<p>A high resolution image database of 42 image pairs (related by elastic deformations) created from original images from the High Resolution Fundus Image Database.<br> <br> Consists of thin linear structures that lack sufficient overlap to pose a challenge for classic similarity measures based on overlapping pixels commonly used in image registration.</p> <p>The dataset contains the intensity grayscale images, as well as binary masks of the retinal area, and labels of the vessels, segmented by expert annotators.<br> </p>
Channel cross section and floodplain water level data from the Allanmore Floodplain, River Dee, Scotland, UK (2013-2018).
<p>Filename: 'Cross Section Data.xls': Cross section data from the River Dee (N=5) and adjacent backwater (N=3) from the floodplain reconnection site. Cross sections surveyed with a real-time kinematic global positioning system (Leica Geosystems 1200) on an annual basis between 2013 and 2018 (twice in 2015 before and immediately after restoration work was completed in October 2015). Elevation data are reported in British National Grid (m above Ordnance Survey datum) format. </p> <p>Filenames 'ML1-ML3 Water Levels.xls': Continuous water table and surface water (15 minute interval) data from three contrasting floodplain observation well sites between 2013 and 2018 (ML1: ditch, ML2: floodplain surface and ML3: backwater). Note there are two data gaps for ML3 due to instrument loss (08/10/2015-16/10/2015 and 18/12/2015-21/06/2016). Water levels were measured with a Troll 100 sensor (ML1 and ML2) and a Frog RX logger/Troll 100 sensor (ML3). All data was corrected for atmospheric pressure using continuous data from a barometric sensor at the site (BaroTroll 100). Water level data are referenced to British National Grid datum. </p> <p>For more details on the methods and results please see the associated article published in the journal<em> Science of the Total Environment</em>:</p> <p>Addy, S. and Wilkinson, M.E. (2021) Embankment lowering and natural self-recovery improves river-floodplain hydrogeomorphic connectivity of a gravel bed river. Science of The Total Environment. https://doi.org/10.1016/j.scitotenv.2020.144626</p> <p> </p> <p> </p>
Data from: Conformational dynamics in TRPV1 channels reported by an encoded coumarin amino acid
TRPV1 channels support the detection of noxious and nociceptive input. Currently available functional and structural data suggest that TRPV1 channels have two gates within their permeation pathway: one formed by a ′bundle-crossing′ at the intracellular entrance and a second constriction at the selectivity filter. To describe conformational changes associated with channel gating, the fluorescent non-canonical amino acid coumarin-tyrosine was genetically encoded at Y671, a residue proximal to the selectivity filter. Total internal reflection fluorescence microscopy was performed to image the conformational dynamics of the channels in live cells. Photon counts and optical fluctuations from coumarin encoded within TRPV1 tetramers correlates with channel activation by capsaicin, providing an optical marker of conformational dynamics at the selectivity filter. In agreement with the fluorescence data, molecular dynamics simulations display alternating solvent exposure of Y671 in the closed and open states. Overall, the data point to a dynamic selectivity filter that may serve as a gate for permeation.
An unusual amino acid substitution within hummingbird cytochrome c oxidase alters a key proton-conducting channel
<p>Hummingbirds in flight exhibit the highest metabolic rate of all vertebrates. The bioenergetic requirements associated with sustained hovering flight raise the possibility of unique amino acid substitutions that would enhance aerobic metabolism. Here, we have identified a non-conservative substitution within the mitochondria-encoded cytochrome <i>c</i> oxidase subunit I (COI) that is fixed within hummingbirds, yet exceedingly rare among other vertebrates. This unusual change is also rare among metazoans, but can be identified in several clades with diverse life histories. We performed atomistic molecular dynamics simulations using bovine and hummingbird COI models, thereby bypassing experimental limitations imposed by the inability to modify mtDNA in a site-specific manner. Intriguingly, our findings suggest that COI amino acid position 153 (bovine numbering system) provides control over the hydration and activity of a key proton channel in COX. We discuss potential phenotypic outcomes linked to this intriguing alteration encoded by the hummingbird mitochondrial genome.</p>
Spectrum usage in Madrid (20150331) when some DVB-T channels were switched off
<p>This dataset represents the spectrum usage in Madrid city on 31st of March 2015 between 02:00 am and 04:00 am. Some DVB-T channels stopped transmitting (~800-860MHz) to make room for 4G networks. The spectrum was scanned using a RTL-SDR device connected to a RPi unit.</p> <p>The dataset is a CSV file with the following structure. Pear each line you have:</p> <p>TimeStamp (seconds) , frequency(Hz) , Signal Power (dB)</p>
Research table for visualization of research performance of the German National Library of Science and Technology, German National Library of Medicine and German National Library of Economics via different communication channels
<p>A collection of data for (a practice) work during my studies for Bachelor. Since there wasn't much time given the data collection isn't as complete as it could be. Also, all text is in German.</p> <p>Definition of variables for data collection can be found in my finished work "How is reserach performance of the German National Library of Science and Technology, German National Library of Medicine and German National Library of Economics made visible via different communication channels; analysis of information of publication on official social media channels and news on offical webside" (in question to be published on Zenodo).</p> <p>Collected data from following official communication channels: Facebook, Twitter, Blogs, Google +, Youtube, Flickr, LinkedIn, Research-Gate, Slideshare, repository and news on websites. For some channels not all data could be collected. Research period from 01.08.2016 to 01.02.2017 (half a year).</p>
MRI raw data: SE measurement of the knee of a healthy volunteer (8 channel coil)
<p>SE measurement of the knee of a healthy volunteer Sequence parameters:</p> <p>TR 1800ms<br> TE 18ms<br> Matrix Size 192x192<br> In Plane Resolution 0.78mmx0.78mm<br> Slice Thickness 2mm<br> 3T System<br> 8 channel knee coil<br> Florian Knoll (florian.knoll@tugraz.at) Date: 2.2.2011</p> <p>Acknowledgements to Tobias Block and Martin Uecker for their support with the in vivo radial spin echo data.</p>
MRI raw data: T2 weighted TSE scan of a healthy volunteer (32 channel head coil)
<p>T2 weighted TSE Scan of the brain of a healthy volunteer, 32 channel coil</p> <p>Sequence parameters:<br> TR 5000ms<br> TE 99ms<br> Turbo Factor 10<br> Matrix Size 256x256<br> In Plane Resolution 0.9mmx0.9mm<br> Slice Thickness 4mm<br> 3T System<br> 32 channel head coil</p> <p>Florian Knoll (florian.knoll@tugraz.at)<br> Date: 2.2.2011<br> </p>
MRI raw data: T2 weighted TSE scan of a healthy volunteer (4 channel head coil)
<p>T2 weighted TSE Scan of the brain of a healthy volunteer, 4 channel coil</p> <p>Sequence parameters:<br> TR 5000ms<br> TE 99ms<br> Turbo Factor 10<br> Matrix Size 256x256<br> In Plane Resolution 0.9mmx0.9mm<br> Slice Thickness 4mm<br> 3T System<br> 4 channel head coil</p> <p>Florian Knoll (florian.knoll@tugraz.at)<br> Date: 2.2.2011<br> </p>
The Reactivation of Decayed Positive Leader with Sudden Channel Elongation in Laboratory Long Spark
<p>The data support the manuscript entitled "The Reactivation of Decayed Positive Leader with Sudden Channel Elongation in Laboratory Long Spark". The *.rar file contains all data used therein and can be decompressed and opened, where these file folders contain the data corresponding to their respective Figures, as they are named. The data can be used freely for scientific purposes with appropriate citation.</p>
Adaptive and non-adaptive convergent evolution in feather reflectance of Channel Islands songbirds
<p>Convergent evolution is widely regarded as a signature of adaptation. But testing the adaptive consequences of convergent phenotypes is challenging, making it difficult to exclude non-adaptive explanations for convergence. Here, we combined feather reflectance spectra and phenotypic trajectory analyses with visual and thermoregulatory modeling to test the adaptive significance of dark plumage in songbirds of the California Channel Islands. By evolving dark dorsal plumage, island birds are generally less conspicuous to visual-hunting raptors in the island environment than mainland birds. Dark dorsal plumage also reduces the energetic demands associated with maintaining homeothermy in the cool island climate. We also found an unexpected pattern of convergence, wherein the most divergent island populations evolved greater reflectance of near-infrared radiation. However, our heat flux models indicate that elevated near-infrared reflectance is not adaptive. Analysis of feather microstructure suggests that island-mainland differences are related to coloration of feather barbs and barbules rather than their structure. Our results indicate that adaptive and non-adaptive mechanisms interact to drive plumage evolution in this system. This study sheds light on the mechanisms driving the association between dark color and wet, cold environments across the tree of life, especially in island birds.</p>
Data on transactions per capita (T1), the payment instruments (T2), the payment systems (T3), and the payment channels (T4).
<p>Data provided by Bank Negara Malaysia (BNM) and Department of Statistics Malaysia (DOSM) on the GDP, volume and value of cashless payment methods in Malaysia. These data include the transactions per capita (T1), the payment instruments (T2), the payment systems (T3), and the payment channels (T4).</p>
Conservative News Media and Criminal Justice: Evidence from Exposure to Fox News Channel
<p>Conservative News Media and Criminal Justice: Evidence from Exposure to Fox News Channel" (Elliott Ash and Michael Poyker), <i>Economic Journal</i>, 2023</p>
Data from: Blood pressure pulsations modulate central neuronal activity via mechanosensitive ion channels
<p><span>The transmission of heartbeat through the cerebral vascular system is known to cause intracranial pressure pulsations. Here we report that arterial pressure pulsations can directly modulate central neuronal activity. </span><span>In a semi-intact rat brain preparation, vascular pressure pulsations elicit correlated local field oscillations in the olfactory bulb (OB) mitral cell layer. These oscillations do not require synaptic transmission, but reflect baroreceptive transduction in mitral cells. This transduction is mediated by an excitatory mechanosensitive ion channel and modulates neuronal spiking activity. Indeed, in awake animals, the heartbeat entrains the activity of a subset of OB neurons within ~20 ms. Thus, we propose that this fast intrinsic interoceptive mechanism can modulate perception, e.g. during arousal, within the OB and also possibly across various brain areas.</span></p>
Boquera in the Mollerusa water channel
Boquera in the Mollerusa water channel. Catalonia. Made with www.trnio.com Source: Objaverse 1.0 / Sketchfab
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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.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
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.