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1,162 results for “fiber”
Recycled T830 carbon fibers: morphological characterization
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Data from: High-molecular-weight polymers from dietary fiber drive aggregation of particulates in the murine small intestine
The lumen of the small intestine (SI) is filled with particulates: microbes, therapeutic particles, and food granules. The structure of this particulate suspension could impact uptake of drugs and nutrients and the function of microorganisms; however, little is understood about how this suspension is re-structured as it transits the gut. Here, we demonstrate that particles spontaneously aggregate in SI luminal fluid ex vivo. We find that mucins and immunoglobulins are not required for aggregation. Instead, aggregation can be controlled using polymers from dietary fiber in a manner that is qualitatively consistent with polymer-induced depletion interactions, which do not require specific chemical interactions. Furthermore, we find that aggregation is tunable; by feeding mice dietary fibers of different molecular weights, we can control aggregation in SI luminal fluid. This work suggests that the molecular weight and concentration of dietary polymers play an underappreciated role in shaping the physicochemical environment of the gut.
High-pressure homogenized citrus fiber cellulose dispersions: structural characterization and flow behavior
<p>High-pressure homogenized citrus fiber cellulose dispersions: structural characterization and flow behavior</p>
Fiber-coupled LEDs as safe and convenient light sources for the characterization of optoelectronic devices
<p>Accompanying dataset for the Method Article "Fiber-coupled LEDs as safe and convenient light sources for the characterization of optoelectronic devices"</p>
Dataset: A model of tension-induced fiber growth predicts white matter organization during brain folding
<p>This dataset contains models, MRI data, and code associated with "A model of tension-induced fiber growth predicts white matter organization during brain folding" in <em>Nature Communications </em>(accepted 27 Oct 2021).</p> <p>Included files:</p> <ol> <li>NatCommMRIdata.zip - MRI data and associated MATLAB code for analysis of each subject</li> <li>folding_with_fibers.mph - model file used to generate results in Main Text. Modifiable parameters include stress-dependent fiber elongation rate, initial fiber volume fractions, initial geometry, and cortical growth rate. Compatible with COMSOL Multiphysics (version 5.3).</li> <li>folding_with_fibersECM.mph - model file corresponding to Supplementary Fig. 2. Compatible with COMSOL Multiphysics (version 5.3).</li> <li>folding_with_fibers_linear.mph - model file corresponding to Supplementary Fig. 3. Compatible with COMSOL Multiphysics (version 5.3).</li> </ol> <ol> </ol>
Superficial white matter bundle atlas based on hierarchical fiber clustering over probabilistic tractography data
<p>Superficial white matter bundle atlas constructed using fiber clustering algorithms, based on 100 subjects of HCP database (probabilistic tractography). The ROIs of Desikan-Killiany atlas where used to label the final clusters.</p> <p>The atlas is composed of 525 fascicles, 267 bundles in the left hemisphere and 258 bundles in the right hemisphere. It has 384 bundles connecting pairs of different ROIs and 141 bundles connecting portions of the same ROI.</p>
Net greenhouse gas balance of fiber wood plantation on peat in Indonesia
<p>Tropical peatlands cycle and store globally significant amounts of carbon in their soil and biomass. Climate and land-use change alter greenhouse gas (GHG) fluxes of tropical peatlands, but the magnitude of these changes remains highly uncertain owing to limited measurements. We measured net ecosystem exchanges of carbon dioxide (CO<sub>2</sub>) and methane (CH<sub>4</sub>) as well as soil nitrous oxide (N<sub>2</sub>O) fluxes between mid-2016 and mid-2022 from <em>Acacia</em> <em>crassicarpa</em> plantation, degraded forest and intact forest within the same peat landscape to represent land-cover change trajectories in Sumatra, Indonesia. Here we report the first full plantation rotation GHG balance investigation undertaken in any fiber wood plantation on peatland globally. The <em>Acacia</em> plantation was found to have lower GHG emissions than the degraded peatland, which had a similar mean groundwater level, despite more intensive land-use. The GHG emissions from the <em>Acacia</em> plantation over a full plantation rotation (38.3 ± 4.8 tCO<sub>2</sub>-eq ha<sup>−1</sup> yr<sup>−1</sup>, average ± standard deviation) were two times higher than those from the intact forest (20.1 ± 3.7 tCO<sub>2</sub>-eq ha<sup>−1</sup> yr<sup>−1</sup>), but only around half of the current IPCC Tier 1 emission factor for this land-use. Our results should help to reduce the uncertainty in the estimation of GHG emissions from globally important ecosystems, provide a complete estimate of the impact of land-use change on tropical peat, and develop science-based peatland management practices that help to minimize GHG emissions.</p>
Net greenhouse gas balance of fiber wood plantation on peat in Indonesia
<p>Tropical peatlands cycle and store large amounts of carbon in their soil and biomass<sup>1</sup><sup>-</sup><sup>5</sup>. Climate and land-use change alter greenhouse gas fluxes of tropical peatlands, but the magnitude of these changes remains highly uncertain<sup>6</sup><sup>-</sup><sup>19</sup>. Here we measure net ecosystem exchanges of carbon dioxide, methane, and soil nitrous oxide fluxes between October 2016 - May 2022 from <em>Acacia</em> <em>crassicarpa</em> plantation, degraded forest and intact forest within the same peat landscape, representing land-cover change trajectories in Sumatra, Indonesia. This allows us to present a full plantation rotation greenhouse gas flux balance in fiber wood plantation on peatland. We find that the <em>Acacia</em> plantation has lower greenhouse gas emissions than the degraded site with a similar average groundwater level, despite more intensive land-use. The greenhouse gas emissions from the <em>Acacia</em> plantation over a full plantation rotation (35.2 ± 4.7 tCO<sub>2</sub>-eq ha<sup>−1</sup> yr<sup>−1</sup>, average ± standard deviation) were around two times higher than those from the intact forest (20.3 ± 3.7 tCO<sub>2</sub>-eq ha<sup>−1</sup> yr<sup>−1</sup>), but only half of the current IPCC Tier 1 emission factor<sup>20</sup> for this land-use. Our results can help to reduce the uncertainty in greenhouse gas emissions estimates, provide an estimate of the impact of land-use change on tropical peat, and develop science-based peatland management practices as nature-based climate solutions.</p>
Data from: The Reissner fiber under tension in vivo shows dynamic interaction with ciliated cells contacting the cerebrospinal fluid
<p>The Reissner fiber (RF) is an acellular thread positioned in the midline of the central canal that forms together with cerebrospinal fluid (CSF)-contacting neurons (CSF-cNs) an axial sensory system detecting curvature in the spinal cord. How these components interact is unknown. Using <em>in vivo</em> imaging in larval zebrafish, we show that RF is under tension and resonates dorsoventrally. Focal RF ablations trigger retraction and relaxation of the fiber cut ends, with larger retraction speeds for rostral ablations. We built a mechanical model that estimates RF stress diffusion coefficient at 10 mm<sup>2</sup>/s and reveals that tension builds up rostrally along the fiber. After RF ablation, CSF-cN spontaneous activity decreased and ciliary motility changed, suggesting physical interactions between RF and cilia projecting into the central canal. We observed that motile cilia were caudally-tilted and frequently interacted with RF. We propose that the numerous ependymal motile monocilia contribute to RF heterogenous tension via weak interactions. Our work demonstrates that under tension, the Reissner fiber dynamically interacts with motile cilia generating CSF flow and spinal sensory neurons.</p>
A Fiber-coupled Scanning Magnetometer with Nitrogen-Vacancy Centers in a Diamond Nanobeam
<p>Dataset for the figures in "A Fiber-coupled Scanning Magnetometer with Nitrogen-Vacancy Centers in a Diamond Nanobeam".</p>
Prediction of Compressive Strength of Concrete with Silica, Ash and Fiber Using Fuzzy Logic Method
<p>Prediction of Compressive Strength of Concrete with Silica, Ash and Fiber Using Fuzzy Logic Method</p> <p>References</p>
Controllable Light Scattering on Fiber Bragg Gratings in Multimode Fibers: Tailoring Angular Emission for Advanced Fiber-Based Light
<p>The dataset consists of angular scattering patterns and transmission spectra for two fiber Bragg gratings. The scattering data is represented as 2-D arrays (images). The arrays are rectangular, where the longer side corresponds to the phi angle (azimuth) ranging from 0 to 2pi, and the shorter side represents the theta angle (polar angle) ranging from 0 to pi. To get the angle in rad per pixel just divide the corresponding arc length (p, 2pi) by the number of pixels on the axis.</p>
Fiber Orientation Estimation from X-ray Dark Field Images of Fiber Reinforced Polymers using Constrained Spherical Deconvolution: Data
<p>The data was simulated in GATEv8.0. The macro's and other files for the simulation can be found in the folders: Sim_50_40, Sim80_60 and Sim90_70. Here, the different files to perform the simulation are given, as well as the output data, found in the folders Flats and Projs (flatfields and projections) in the form of a csv-file. The csv-file contains 5000 rows (one for each image), and each row contains a flattened 450x450 image.</p> <p>The files for visualization of the fiber directions are given in the folder MRtrix. This folder contains the reconstructed scatter magnitudes and their respective directions in a mat-file. On this set of directions the constrained spherical deconvolution is applied using the sf_dirs.mif, sf_mask.mif, sf_response.mif and data.mif files. This returns the orientation density function in each voxel as output (odf_csd_14.mif). An alternative approach is performing a Funk-Radon transform on the coefficients of the scatter function (data_coeffs_10.mif) to obtain odf_frt_10.mif.</p> <p>Using a peak finding algorithm the fiber orientations are extracted from these odf-files and written to peaks_x.mif files, with or without a threshold (10% of largest amplitude).</p>
Source data for Ordouie, E. et al. Differential phase-diversity electrooptic modulator for cancellation of fiber dispersion and laser noise.
<p>The experimental data and primary simulation results.</p>
3D rendering (left) and 2D orthoslice (rigth) of a virtual longitudinal section in the chorda tendinea insertion into the papillary muscle allowing to visualize the transition from collagen to muscle fibers
<p>The white square on the 3D rendering indicates the region-of-interest shown on the right. At the beginning of the video, the yellow and<br> blue arrows indicated the presence of adipocytes and a vessel filled with blood.</p>
Progressive virtual transverse section through a porcine MV leaflet sample to demonstrate the visualization of the heterogeneous organization of the ECM fibers using Hf-WD 1:2 POM-based cryo-CECT
<p>The atrial side is at the top and the ventricular side at the bottom. At the beginning of the video, the yellow and blue arrows indicate the presence of adipocytes and blood vessels, respectively.</p>
Implementing a Low Fiber Diet vs. Regular Diet in Postoperative Colorectal Patients With Ileostomies
ClinicalTrials.gov study NCT04675606. IPD Sharing: NO. Countries: 1. Publications: 10.
Evaluation of Fusion Rate Using K2M VESUVIUS® Demineralized Fibers With K2M EVEREST® Spinal System
ClinicalTrials.gov study NCT02064855. IPD Sharing: Not stated. Countries: 0. Publications: 7.
A 12-weeks Study to Evaluate the Dietary Fiber and Probiotics Treatment in Prevention and Intervention of Weight-gain and Cognitive Impairment of Schizophrenia or Bipolar Disorder
ClinicalTrials.gov study NCT03379597. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Carbon Fiber Transpedicular Screws in Treatment of Spinal Metastatic Disease
ClinicalTrials.gov study NCT06293157. IPD Sharing: NO. Countries: 1. Publications: 6.
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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.