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2,239 results for “MicroED”
Dataset: Submicron‐ and Nanoplastic Detection at Low Micro‐ to Nanogram Concentrations Using Gold Nanostar‐Based Surface‐Enhanced Raman Scattering (SERS) Substrates
<p>ABSTRACT</p> <p>The presence of submicron- (1 µm – 100 nm) and nanoplastic (< 100 nm) particles within various sample matrices, ranging from marine environments to foods and beverages, has become a topic of increasing interest in recent years. Despite this interest, very few analytical techniques remain that allow for the detection of these small plastic particles in the low concentration ranges that they are anticipated to be present at. Research focused on optimizing surface-enhanced Raman scattering (SERS) to enhance signal obtained in Raman spectroscopy has been shown to have great potential for the detection of plastic particles below conventional resolution limits. In this study, we produce SERS substrates composed of gold nanostars and assess their potential for submicron- and nanoplastic detection. The results show 33 nm polystyrene could be detected down to 1.25 µg/mL while 36 nm poly(ethylene terephthalate) was detected down to 5 µg/mL. These results confirm the promising potential of the gold nanostar-based SERS substrates for nanoplastic detection. Furthermore, combined with findings for 121 nm polypropylene and 126 nm polyethylene particles, they highlight potential differences in analytical performance that depend on the properties of the plastics being studied.</p>
Micro and Macro Open Science Perspective Taxonomy
<h1>Micro and Macro Open Science (OS) Perspective Taxonomy</h1> <h2>Micro OS Perspective</h2> <p>Taxonomy related to terminologies and knowledge around the practice (workflow) of the OS knowledge generator (e.g., researcher), based on reading by <a title="Taxonomia da Ciência Aberta: revisada e ampliada" href="https://doi.org/10.5007/1518-2924.2023.e91712" target="_blank" rel="noopener">Silveira et al. (2023)</a> and <a title="UNESCO Recommendation on Open Science" href="https://unesdoc.unesco.org/ark:/48223/pf0000379949" target="_blank" rel="noopener">UNESCO (2021)</a>.</p> <h2>Macro OS Perspective</h2> <p>Taxonomy related to the conceptual ramifications of OS concerning (public) policies, infrastructure, open involvement of social actors (society) and open dialogue with other knowledge systems, based on reading by <a title="Taxonomia da Ciência Aberta: revisada e ampliada" href="https://doi.org/10.5007/1518-2924.2023.e91712" target="_blank" rel="noopener">Silveira et al. (2023)</a> and <a title="UNESCO Recommendation on Open Science" href="https://unesdoc.unesco.org/ark:/48223/pf0000379949" target="_blank" rel="noopener">UNESCO (2021)</a>.</p> <h3>Instructions:</h3> <ul> <li>There is nothing new in this repository. This is just the taxonomy revised and expanded by <a title="Taxonomia da Ciência Aberta: revisada e ampliada" href="https://doi.org/10.5007/1518-2924.2023.e91712" target="_blank" rel="noopener">Silveira et al. (2023)</a> segregated into two perspectives: Micro and Macro;</li> <li>The reason for this segregation was to document the terminologies and knowledge surrounding the practice (workflow) of OS, which from an individual (micro) point of view, is most interest to the researcher;</li> <li>These two concepts are presented in the form of a mindmap in English and Portuguese (four .png files);</li> <li>If the user wishes to develop another mindmap, with another theme and/or colors, or another flowchart, there are also eight *.txt files with the markdown and memaid hierarchies.</li> </ul>
Supporting data for "Unveiling Vertebrate Development Dynamics in Frog Xenopus laevis using Micro-CT Imaging"
<p>The dataset contains X-ray Micro Computed Tomography data of Xenopus laevis frog. There are twenty datasets of ten individual animals. Each animal was CT scanned twice – once as a native scan to visualize the hard tissues, and once contrast-stained to visualize the soft tissues. The datasets include nine developmental stages (NF44-45, NF52, NF53, NF54, NF57, NF59, NF62, NF66 and adult). There are two adults, one male and one female. The CT data (in 8bit .tiff format compressed as .tar.gz files) are supported by .stl files created from each dataset. The database also includes .stl files of selected structures of interest (body, skeleton, skull, brain and guts of individual animals).</p>
Modeling of the micro-focused Brillouin light scattering spectra
<p><strong>This repository contains data and code presented in paper titled: Modeling of the micro-focused Brillouin light scattering spectra</strong></p> <p> </p> <h2><strong>Data</strong></h2> <p>The structure of this archive is divided by the usage of the data in individual figures in paper titled "Modeling of the micro-focused Brillouin light scattering spectra", which can be found in zip file named <em>ModelingOfTheMicro-focusedBrillouinLightScatteringSpectra-1.0.0_FigsData.zip</em></p> <p>the encoding in .dat files is utf-8<br>All the presented data are in .dat files (no need to open <em>.opju </em>to get access to the data)<br>The <em>.opju</em> is source file of OriginLab software and can be open by freely available tools - <a href="https://www.originlab.com/viewer/" target="_blank" rel="noopener">www.originlab.com/viewer/</a></p> <p>Each folder contains another <em>info.txt</em> where the data are described individually</p> <h2>Software</h2> <p>All the codes used to generate figures in the paper can be found on the Github platform in publicly available repository. The code can be used and modified if the authors and paper are credited. <a title="github.com/CEITECmagnonics/ModelingOfTheMicro-focusedBrillouinLightScatteringSpectra" href="https://github.com/CEITECmagnonics/ModelingOfTheMicro-focusedBrillouinLightScatteringSpectra" target="_blank" rel="noopener">https://github.com/CEITECmagnonics/ModelingOfTheMicro-focusedBrillouinLightScatteringSpectra</a></p> <p>Release v1.0.0 is available in <em>ModelingOfTheMicro-focusedBrillouinLightScatteringSpectra-1.0.0_code.zip</em></p> <p> </p> <p>The software also uses another freely available tool for calculating spin wave dispersion: <a title="github.com/CEITECmagnonics/SpinWaveToolkit" href="https://github.com/CEITECmagnonics/SpinWaveToolkit" target="_blank" rel="noopener">https://github.com/CEITECmagnonics/SpinWaveToolkit</a></p>
Supplementary micro-X-ray Fluorescence data for: "On the possible contribution of meteoritic metal to some Ni-rich Indonesian kris daggers: Comparing original daggers and newly forged analogue objects"
<p>This repository contains the micro X-Ray Fluorescence (microXRF) results described within the manuscript titled “On the possible contribution of meteoritic metal to Ni-rich Indonesian kris daggers: Comparing original daggers and newly forged analog objects” submitted to the Meteoritics and Plantetary Science (MAPS) journal by Brandstätter et al. The manuscript describes two types of microXRF results: Semi-quantitative maps and quantified line scan results. The README file contains a detailed overview of which files contain which data.</p>
Brondata bij syntheseonderzoek 'Van micro naar macro: de aanwezigheid van mesolithische jagers-verzamelaarsgroepen in de regio van de Beneden-Schelde begrijpen door middel van techno-functioneel onderzoek'.
<p>Bijlagen bij syntheseonderzoek "<em>Van micro naar macro: de aanwezigheid van mesolithische jagers-verzamelaarsgroepen in de regio van de Beneden-Schelde begrijpen door middel van techno-functioneel onderzoek</em>", gepubliceerd als SYNTAR 27 (<a href="https://doi.org/10.55465/HLBU2121">https://doi.org/10.55465/HLBU2121</a>)</p> <p> </p> <p>Bijlage 1: Lijst met de aantallen bestudeerde en mogelijk gebruikte artefacten van Beveren-LPWW, per cluster.</p> <p>Bijlage 2: Overzicht van de bewaringstoestand van de artefacten uit de negen Beveren-LPWW clusters waarvan meer dan 50 artefacten werden gescreend. Voor elke cluster wordt worden de alteratieglans, patina, hittebeschadiging, postdepositionele boordafronding en postdepositionele abrasie gekwantificeerd. </p> <p>Bijlage 3: Alle data van archeologische plantbewerkingssporen, per artefact waarop ze werden waargenomen. </p>
Breast Micro-Calcifications Dataset with Precisely Annotated Sequential Mammograms
<p><strong>Dataset Version 3 Update</strong></p> <p><strong>The ground truth images (.jpg) match the dimensions of the corresponding original images (.dcm), ensuring consistency across the dataset.</strong><br><br></p> <p><strong>Breast Micro-Calcifications Dataset with Precisely Annotated Sequential Mammograms</strong></p> <p><strong>Citing the Dataset</strong></p> <p>The dataset is released under a Creative Commons Attribution license, so please cite the dataset if it is used in your work in any form. Published academic papers should use the academic paper citation for our paper. Personal works, such as projects or blog posts, should provide a URL to this Zenodo page, though a reference to our paper would also be appreciated.</p> <p><em>Academic paper citation</em></p> <p>Loizidou, K., Skouroumouni, G., Pitris, C. <em>et al.</em> Digital subtraction of temporally sequential mammograms for improved detection and classification of microcalcifications. <em>Eur Radiol Exp</em> <strong>5, </strong>40 (2021). https://doi.org/10.1186/s41747-021-00238-w</p> <p><em>Personal use citation</em></p> <p>Include a link to this Zenodo page - 10.5281/zenodo.14859694</p> <p><strong>ACKNOWLEDGMENT</strong></p> <p>This research is funded by the European Union’s Horizon 2020 research and innovation program under grant agreement No. 739551 (KIOS CoE) and from the Republic of Cyprus through the Directorate General for European Programs, Coordination and Development.</p> <p><strong>Contact Information</strong></p> <p>If you would like further information about the dataset, or if you experience any issues downloading files, please contact us at cloizi01@ucy.ac.cy.</p> <p><strong>General Information</strong></p> <p>This dataset consists of 100 pairs of mammograms, from two temporally sequential rounds. Specifically, this dataset includes the prior and recent mammograms of CC and MLO view of each patient. This is a complete dataset for the detection and BI-RADS classification of breast micro-calcifications, using digital mammograms. It contains normal (BI-RADS 1), benign (BI-RADS 2), and suspicious (BI-RADS 4-5) cases, and for each mammogram, an image with precise annotation of each individual micro-calcification, by two expert radiologists, is provided. In 32 suspicious cases, the biopsy results are also available.</p> <p><strong>More details are available in the README.txt</strong></p>
Multi-resolution X-Ray micro-CT images of Bentheimer Sandstones
<p>This dataset consists of multi-resolution X-Ray micro-tomography images of two Bentheimer sandstone rock cores. The rock cores were first used experimentally in [1] with further modelling in [2]. This new dataset is used directly in the publication [3] - preprint available at https://arxiv.org/abs/2111.01270. </p> <p>The original dataset from [1] (of the same rock cores) is hosted on the BGS National Geoscience Data Centre, ID #130625 at dx.doi.org/10.5285/5f899de8-4085-4370-a45e-e613f27e8f1d and there is also a subvolume image dataset, for easier download available on the Digital Rocks Portal, project 229, DOI:10.17612/KT0B-SZ28 at digitalrocksportal.org/projects/229. </p> <p>The images provided herein are from two distinct Bentheimer rock cores -- core 1 and core 2. The cores have diameter, 12.35mm, lengths 73.2mm and 64.7mm, core-averaged porosities of 0.203 and 0.223 and permeabilities of 1.636D and 0.681D for core 1 and 2, respectively. Core 2 has a clear low permeability lamination occurring at 2/3 of the total core length, whereas core 1 has a general fining towards the outlet of the core creating a reduction in porosity [1].</p> <p>The images were acquired with a Zeiss Versa 510 X-Ray CT scanner. We acquired images of two sub volumes from each core, at locations 1/3rd (subvolume 1) and 2/3rds (subvolume 2) of the way along the core length, at resolutions of 2, 6 and 18 microns. We refer to the 2 micron images as high-resolution (HR), the 6 micron images as low-resolution (LR) and the 18 micron images as very-low-resolution (VLR). There are also super-resolution (SR) images created at 2 micron resolution from the LR images, using a deep-learning algorithm. There are also cubic interpolation images created from the LR image - these are labels bicubic. These have a resolution of 2 microns, and size equal to the HR and SR images. Details of the SR and LR Bicubic generation are found in [3]. The following scanning protocols were used for the direct imaging:</p> <p>2 micron images:<br> --We use a 4x microscope objective, an exposure time of 8s, 2x averaged binning, 9001 projections, a scan voltage of 80kV and a power of 7W. Each scan takes approximately 24 hours.</p> <p>6 micron images:<br> --We use a flat panel detector, an exposure time of 0.7s, 10x repeat frames, 1x averaged binning, 2401 projections, a scan voltage of 80kV and a power of 7W. The cone angle is 14.46 degrees and the fan angle is 22.2 degrees. Each scan takes approximately 1 hour.</p> <p>18 micron images:<br> --We use a 0.4x microscope objective, an exposure time of 1s, 10x repeat frames, 1x averaged binning, 2401 projections, a scan voltage of 80kV and a power of 7W. The cone angle is 12.65 degrees and the fan angle is 12.65 degrees. Each scan takes approximately 2 hours.</p> <p>We present 4 sets of the images with different levels of processing. All images are mutual registered to each other. Each image filename has a Core#_Subvol#_resolution identifier, either with the actual resolution (e.g. 6) or the short form (e.g. LR). The following name endings are used</p> <p>(1) - '_16bit_LE.raw'. These are the .raw images of little-endian format. Preceding this filename is also the cubic image side length in voxels, e.g. _75cube. 12 images in total.</p> <p>(2) - '_16bit_LE_normalised.raw'. These are the .raw images of little-endian format with normalised greyscale values following the procedure in [1]. Preceding this filename is also the cubic image side length in voxels, e.g. _75cube. 12 images in total.</p> <p>(3) - 'Core1_Subvol1_HR' etc. These are the .tiff images of (2) above, which have been converted to 8 bit. Includes bicubic interpolation images and SR images, but no 16 micron images, since these were not used in the analysis of [3]. 16 images in total. </p> <p>(4) - 'Core1_Subvol1_HR_filtered' etc. These are the .tiff images from (3) above, which have filtered using non-local means filtering. More details are found in [3]. Note there are no SR images here since they are already essentially filtered, and included in (3) above. 12 images in total.</p> <p><br> <strong>References</strong><br> <br> [1] Jackson, S.J., Lin, Q. and Krevor, S. 2020. Representative Elementary Volumes, Hysteresis, and Heterogeneity in Multiphase Flow from the Pore to Continuum Scale. Water Resources Research, 56(6), e2019WR026396</p> <p>[2] Zahasky, C., Jackson, S.J., Lin, Q., and Krevor, S. 2020. Pore network model predictions of Darcy‐scale multiphase flow heterogeneity validated by experiments. Water Resources Research, 56(6), e e2019WR026708.</p> <p>[3] Jackson, S.J, Niu, Y., Manoorkar, S., Mostaghimi, P. and Armstrong, R.T. 2021. Deep learning of multi-resolution X-Ray micro-CT images for multi-scale modelling. Under review, preprint available at https://arxiv.org/abs/2111.01270 </p>
Dataset for "Tuning the thermoelectric properties of boron-doped silicon nanowires integrated in a micro-harvester"
<p>Dataset including all data used for the elaboration of the work "Tuning the thermoelectric properties of boron-doped silicon nanowires integrated in a micro-harvester" published in Advanced Materials Technologies, 2022</p> <p><a href="https://doi.org/10.1002/admt.202101715">https://doi.org/10.1002/admt.202101715</a></p> <p>The files includes:</p> <p>· INDIVIDUAL NW data:</p> <p> - I-V data of each NW at different temperatures</p> <p> - 3w data of each NW at different temperatures<br> - 4 SEM images of the NW, each of them used for assessing one NW parameter<br> - Tip: NW diameter 2<br> - Base: NW diameter 1<br> - Overall: NW length<br> - Tilted view at 45º: Relative NW heigh over substrate</p> <p>· SEEBECK MEASUREMENT data:</p> <p> - Voc versus applied dT data for each substrate temperature<br> - File containig calibration data for all resistors</p> <p>· TEM data:</p> <p>-TEM images of the studied NWs in .dm3 format.</p> <p>· X-RAY FLUORESCENCE data:</p> <p>- Maps containing one energy spectrum per pixel in .hdf files.</p> <p>· TIP-ENHANCED RAMAN SPECTROSCOPY data:</p> <p>- Maps containing one energy spectrum per pixel in a tabulated .txt file.</p> <p>· POWER HARVESTED data:</p> <p>- IV curves of each microthermocouple connection X-Y upon different substrate temperatures in tabulated separated .txt files</p>
Snow equi-temperature metamorphism described by a phase-field model applicable on micro-tomographic images: prediction of microstructural and transport properties
<p>This dataset provides data described and used in the article submitted to Journal of Advances in Modeling Earth Systems "Snow equi-temperature metamorphism described by a phase-field model applicable on micro-tomographic images: prediction of microstructural and transport properties".</p> <p>It contains .csv files with different properties computed on outputs of the model Snow3D simulating equi-temperature metamorphism. This micro-scale model was used here with experimental micro-tomographic snow images as input and returns series of 3-D images of snow showing features of equi-temperature metamorphism at different time steps as output.</p> <p>In this dataset, you will find two types of files:</p> <p>- the microstructural properties (density, specific surface area, covariance lengths, mean curvature) computed on the simulated images at different time steps.</p> <p>- the transport properties (effective conductivity, normalizes effective vapor diffusion coefficient, permeability) of the simulated images at different time steps.</p> <p>Finally, metadata_simulations.csv gather the information relative to the simulations.</p>
Simulated X-ray micro-computed tomography based particle tracking velocimetry dataset for validation purposes
<p>Authors: Tom Bultreys, Stefanie Van Offenwert, Wannes Goethals, Matthieu N. Boone, Jan Aelterman and Veerle Cnudde; Ghent University (Belgium)<br> Date: 8th February 2022<br> For any usage, please cite the accompanying publication: T. Bultreys, S. Van Offenwert, W. Goethals, M. N. Boone, J. Aelterman and V. Cnudde, "X-ray Tomographic Micro-Particle Velocimetry in Porous Media", Physics of Fluids, 34, 042008 (2022).<br> https://doi.org/10.1063/5.0088000<br> -----------------------------</p> <p>Validation dataset for micro-computed tomography based particle tracking velocimetry: a simulated micro-CT based velocimetry experiment with associated ground-truth particle trajectories</p> <p>- The ground truth trajectories were based on randomly dropping virtual particles in the pore space, and tracking their movement through a CFD-based velocity field (see below). The positions were calculated for the time corresponding to each radiograph of a micro-CT experiment. The folder "GroundTruthData" contains the locations of all particles at the central time of each micro-CT scan, as well as their radii. Check the associated readme file to read the data file.</p> <p>- The main data is contained in the directory "TimeFrames", containing the reconstructed 3D images at 7 time steps (70 seconds interval), with a voxel size of 11.8 µm, in 3D .tif format. This can be opened in for example Fiji/ImageJ.</p> <p>- The directory "clearFrame" contains an image of the pore space without particles, matching with the time frame images, in the same format and with the same voxel size as the time frame images.</p> <p>- The directory "SegmentedImage" contains two binary 3D images (same format as images before) which was created by segmenting the clearFrame image. There are two versions: the original segmentation, and a version where pores were eroded. The eroded segmentation was used to mask the pore space during particle detection (this avoids spurious detections near pore walls, caused by minor mis-alignments of the clearImage).</p> <p>- The original segmentation was used as input to simulate the velocity fields in the directory "simulatedVelocityFields", which contains 3D .tif images that represent the three components of the velocity vector field (the X-direction was the axis of the sample, equaling the flow direction). There is also an input text file and an output text file. The simulation was performed with the code from single-phase OpenFOAM implementation from Ali Raeini and others at Imperial College London: http://www.imperial.ac.uk/earth-science/research/research-groups/perm/research/pore-scale-modelling/</p> <p>- The trackingOutput folder contains the experimentally determined velocity points (.csv, only particles that could be tracked at least 6 time frames) and the experimentally determined velocity magnitude field (.tif, voxel size 23.6 µm)</p>
X-ray micro-computed tomography based X-ray particle tracking velocimetry dataset in a porous glass filter
<p>Authors: Tom Bultreys, Stefanie Van Offenwert, Wannes Goethals, Matthieu N. Boone, Jan Aelterman and Veerle Cnudde; Ghent University (Belgium)<br> Date: 8th February 2022<br> For any usage, please cite the accompanying publication: T. Bultreys, S. Van Offenwert, W. Goethals, M. N. Boone, J. Aelterman and V. Cnudde, "X-ray Tomographic Micro-Particle Velocimetry in Porous Media", Physics of Fluids, 34, 042008 (2022).<br> https://doi.org/10.1063/5.0088000<br> -----------------------------</p> <p>Dataset of a micro-computed tomography based particle tracking velocimetry experiment performed on a glass filter (ROBU P0; sample size 4 mm diameter by 1 cm).</p> <p>- The main data is contained in the directory "TimeFrames", containing the reconstructed 3D images at 59 time steps (35 seconds interval), with a voxel size of 11.8 µm, in 3D .tif format. This can be opened in for example Fiji/ImageJ.</p> <p>- The directory "clearFrame" contains a high-quality pre-scan taken before the main experiment, which was registered and resampled to the time frame images, in the same format and with the same voxel size as the time frame images.</p> <p>- The directory "SegmentedImage" contains two binary 3D images (same format as images before) which was created by segmenting the clearFrame image. There are two versions: the original segmentation, and a version where pores were eroded. The eroded segmentation was used to mask the pore space during particle detection (this avoids spurious detections near pore walls, caused by minor mis-alignments of the clearImage).</p> <p>- The original segmentation was used as input to simulate the velocity fields in the directory "simulatedVelocityFields", which contains 3D .tif images that represent the three components of the velocity vector field (the X-direction was the axis of the sample, equaling the flow direction). There is also an input text file and an output text file. The simulation was performed with the code from single-phase OpenFOAM implementation from Ali Raeini and others at Imperial College London: http://www.imperial.ac.uk/earth-science/research/research-groups/perm/research/pore-scale-modelling/</p> <p>- The trackingOutput folder contains the experimentally determined velocity points (.csv, only particles that could be tracked at least 20 time frames) and the experimentally determined velocity magnitude field (.tif, voxel size 23.6 µm)</p>
X-ray micro-computed tomography based particle tracking velocimetry dataset in a sandpack
<p>Authors: Tom Bultreys, Stefanie Van Offenwert, Wannes Goethals, Matthieu N. Boone, Jan Aelterman and Veerle Cnudde; Ghent University (Belgium)<br> Date: 8th February 2022<br> For any usage, please cite the accompanying publication: T. Bultreys, S. Van Offenwert, W. Goethals, M. N. Boone, J. Aelterman and V. Cnudde, "X-ray Tomographic Micro-Particle Velocimetry in Porous Media", Physics of Fluids, 34, 042008 (2022).<br> https://doi.org/10.1063/5.0088000<br> -----------------------------</p> <p>Dataset of a micro-computed tomography based particle tracking velocimetry experiment performed on a sand pack (grainsize 500-710 µm; sample size 4 mm diameter by 2 cm).</p> <p>- The main data is contained in the directory "TimeFrames", containing the reconstructed 3D images at 79 time steps (35 seconds interval), with a voxel size of 11.8 µm, in 3D .tif format. This can be opened in for example Fiji/ImageJ.</p> <p>- The directory "clearFrame" contains a high-quality pre-scan taken before the main experiment, which was registered and resampled to the time frame images, in the same format and with the same voxel size as the time frame images.</p> <p>- The directory "SegmentedImage" contains two binary 3D images (same format as images before) which was created by segmenting the clearFrame image. There are two versions: the original segmentation, and a version where pores were eroded. The eroded segmentation was used to mask the pore space during particle detection (this avoids spurious detections near pore walls, caused by minor mis-alignments of the clearImage).</p> <p>- The original segmentation was used as input to simulate the velocity fields in the directory "simulatedVelocityFields", which contains 3D .tif images that represent the three components of the velocity vector field (the X-direction was the axis of the sample, equaling the flow direction). There is also an input text file and an output text file. The simulation was performed with the code from single-phase OpenFOAM implementation from Ali Raeini and others at Imperial College London: http://www.imperial.ac.uk/earth-science/research/research-groups/perm/research/pore-scale-modelling/</p> <p>- The trackingOutput folder contains the experimentally determined velocity points (.csv, only particles that could be tracked at least 20 time frames) and the experimentally determined velocity magnitude field (.tif, voxel size 23.6 µm)</p>
Data for "Ferrofluidic aqueous two-phase system with ultralow interfacial tension and micro-pattern formation"
<p>This dataset contains the raw data used for the publication "Ferrofluidic Aqueous Two-Phase System with Ultralow Interfacial Tension, Instabilities and Pattern Formation"</p>
Wind tunnel experiment of a micro wind farm model
<p>Simultaneous strain gage measurements of sixty porous disk models, in a scaled wind farm with one hundred models, and for fifty-six different layouts. </p> <p>For detailed information about the experimental setup and wind farm layouts see: </p> <p>Bossuyt, J., Meneveau, C., & Meyers, J. (2018). Effect of layout on asymptotic boundary layer regime in deep wind farms. <em>Physical Review Fluids. See also:</em> https://arxiv.org/abs/1808.09579 .</p> <p>For more information about the experimental design of the porous disk models, see also:</p> <p>Bossuyt, J., Howland, M. F., Meneveau, C., & Meyers, J. (2017). Measurement of unsteady loading and power output variability in a micro wind farm model in a wind tunnel. <em>Experiments in Fluids</em>, <em>58</em>(1), 1. http://doi.org/10.1007/s00348-016-2278-6</p> <p> Bossuyt, J., Meneveau, C., & Meyers, J. (2017). Wind farm power fluctuations and spatial sampling of turbulent boundary layers. <em>Journal of Fluid Mechanics</em>, <em>823</em>, 329-344. http://doi.org/10.1017/jfm.2017.328</p> <p> </p> <p>The data contains matrices 'WF_U', 'x', and 'y', and variable 'fs' for each layout. <br> The matrix 'WF_U' contains the reconstructed velocity signal in m/s measured by each porous disk, and has size ( 20 , 3 , number of time samples), with 20 the number of porous disk rows, and 3 the number of streamwise aligned porous disk columns in the wind farm. Matrices 'x', and 'y' have size (20,3) and contain the locations of each instrumented porous disk in units of disk diameter D = 0.03m. It is important to note that the wind farm has one extra column of non-instrumented porous disk models on each side, for a total of 20x5=100 porous disk models.The variable 'fs' contains the sampling frequency in Hz, at which all 60 porous disks are simultaneously sampled.</p> <p>--------------------------------------------------------<br> Example code to load data in Matlab :<br> --------------------------------------------------------<br> filename = 'U_C1_1.h5';<br> fileID = H5F.open(filename,'H5F_ACC_RDONLY','H5P_DEFAULT');</p> <p>datasetID = H5D.open(fileID,'WF_U');<br> WF_U = H5D.read(datasetID,'H5ML_DEFAULT','H5S_ALL','H5S_ALL','H5P_DEFAULT');<br> H5D.close(datasetID);</p> <p>datasetID = H5D.open(fileID,'fs');<br> fs = H5D.read(datasetID,'H5ML_DEFAULT','H5S_ALL','H5S_ALL','H5P_DEFAULT');<br> H5D.close(datasetID);</p> <p>datasetID = H5D.open(fileID,'x');<br> x = H5D.read(datasetID,'H5ML_DEFAULT','H5S_ALL','H5S_ALL','H5P_DEFAULT');<br> H5D.close(datasetID);</p> <p>datasetID = H5D.open(fileID,'y');<br> y = H5D.read(datasetID,'H5ML_DEFAULT','H5S_ALL','H5S_ALL','H5P_DEFAULT');<br> H5D.close(datasetID);</p> <p>H5F.close(fileID);</p> <p>--------------------------------------------------------<br> Example code to load data in Python:<br> --------------------------------------------------------<br> import h5py<br> filename = 'U_C1_1.h5'<br> f = h5py.File(filename, 'r')</p> <p>U = f['WF_U'][()]<br> x = f['x'][()]<br> y = f['y'][()]<br> fs = f['fs'][0][0]<br> f.close()</p> <p>--------------------------------------------------------<br> Example code to generate figures 15 and 16 of Bossuyt et al. (2018). Effect of layout on asymptotic boundary layer regime in deep wind farms. Physical Review Fluids, in Matlab<br> --------------------------------------------------------<br> WF_cases_selected = 1:7;</p> <p>folder = '/';% folder with files</p> <p>WF_cases_l = {'U_C1';'U_C2';'NU1_C1';'NU1_C2';'NU2_C1';'NU2_C2';'NU2_C3'};% name of layout variations<br> WF_cases_n = [6, 7, 11, 8, 11, 7, 6]; % 'number of layout variations for each case</p> <p>WF_data.x = cell( length(WF_cases_selected) , 1);% x - coordinates of porous disk locations<br> WF_data.y = cell( length(WF_cases_selected) , 1);% y - coordinates of porous disk locations<br> WF_data.shift = cell( length(WF_cases_selected) , 1);% spanwise shift of layout series<br> WF_data.fs = cell( length(WF_cases_selected) , 1);<br> WF_data.WF_Pm = cell( length(WF_cases_selected) , 1);<br> WF_data.WF_Um = cell( length(WF_cases_selected) , 1);<br> WF_data.WF_U_rms = cell( length(WF_cases_selected) , 1);</p> <p><br> for i = 1 : length(WF_cases_selected)<br> <br> WF_data_case = struct;<br> WF_data_case.x = cell( WF_cases_n(i) , 1);<br> WF_data_case.y = cell( WF_cases_n(i) , 1);<br> WF_data_case.shift = cell( WF_cases_n(i) , 1);<br> WF_data_case.fs = cell( WF_cases_n(i) , 1);<br> WF_data_case.WF_Pm = cell( WF_cases_n(i) , 1);<br> WF_data_case.WF_Um = cell( WF_cases_n(i) , 1);<br> WF_data_case.WF_U_rms = cell( WF_cases_n(i) , 1);<br> <br> for j = 1:WF_cases_n(i)<br> clc<br> i<br> j<br> <br> WF_data_var = struct;<br> <br> %read the file<br> filename = [folder WF_cases_l{i} '_' num2str(j) '.h5'];<br> fileID = H5F.open(filename,'H5F_ACC_RDONLY','H5P_DEFAULT');<br> <br> datasetID = H5D.open(fileID,'WF_U');<br> WF_data_var.WF_U = H5D.read(datasetID,'H5ML_DEFAULT','H5S_ALL','H5S_ALL','H5P_DEFAULT');<br> H5D.close(datasetID);<br> <br> datasetID = H5D.open(fileID,'fs');<br> WF_data_case.fs{j} = H5D.read(datasetID,'H5ML_DEFAULT','H5S_ALL','H5S_ALL','H5P_DEFAULT');<br> H5D.close(datasetID);<br> <br> datasetID = H5D.open(fileID,'x');<br> WF_data_case.x{j} = H5D.read(datasetID,'H5ML_DEFAULT','H5S_ALL','H5S_ALL','H5P_DEFAULT');<br> H5D.close(datasetID);<br> <br> datasetID = H5D.open(fileID,'y');<br> WF_data_case.y{j} = H5D.read(datasetID,'H5ML_DEFAULT','H5S_ALL','H5S_ALL','H5P_DEFAULT');<br> H5D.close(datasetID);<br> <br> H5F.close(fileID);<br> <br> WF_data_var.WF_P = WF_data_var.WF_U.^3;</p> <p> % Time averaged power<br> WF_data_case.WF_Pm{j} = mean(WF_data_var.WF_P,3);<br> <br> % normalize by power in first row: Pi/P1<br> WF_data_case.WF_Pm{j} = WF_data_case.WF_Pm{j}./mean(WF_data_case.WF_Pm{j}(1,:));<br> <br> % Time averaged velocity<br> WF_data_case.WF_Um{j} = mean(WF_data_var.WF_U,3);<br> <br> % u_rms --> TI<br> WF_data_case.WF_U_rms{j} = std(WF_data_var.WF_U,[],3);<br> end<br> <br> WF_data.x{i} = WF_data_case.x;<br> WF_data.y{i} = WF_data_case.y;<br> WF_data.fs{i} = WF_data_case.fs;<br> WF_data.WF_Pm{i} = WF_data_case.WF_Pm;<br> WF_data.WF_Um{i} = WF_data_case.WF_Um;<br> WF_data.WF_U_rms{i} = WF_data_case.WF_U_rms;<br> <br> %determine spanwise shift for plot legends<br> tmp1 = WF_data.y{i}{j-1};<br> tmp2 = WF_data.y{i}{j};<br> dy = diff( [tmp1(:,1) tmp2(:,1)] ,1,2);<br> dy = max(dy(abs(dy)>0));<br> WF_data.shift{i} = 0:dy:(WF_cases_n(i)-1)*dy;<br> <br> end</p> <p>%%<br> line_tick = {'o-','*-','+-','d-','s-','^-','v-','<-','>-','p-','h-'};<br> line_color = [51,160,44; 141,211,199; 31,120,180; 106,61,154; 227,26,28; 177,89,40; 255,127,0; 166,206,227]./255;</p> <p>legend_items = cell(size(WF_cases_selected));<br> for i = 1:length(legend_items)<br> legend_items{i} = strrep(WF_cases_l{i},'_','-');<br> end</p> <p>%% average power entire farm<br> row_start = 1;<br> row_end = 19;<br> f1 = figure;<br> set(gcf,'paperposition',[0,0,8.4,4.9])<br> hold on</p> <p>for i = 1 : length(WF_cases_selected)<br> tmp_P = zeros(size(WF_data.shift{i}));<br> for j = 1:WF_cases_n(i)<br> tmp_P(j) = mean(mean( WF_data.WF_Pm{i}{j}(row_start:row_end,:)));<br> end<br> plot( WF_data.shift{i} , tmp_P, line_tick{i} ,'Color', line_color(i,:) ,'MarkerFaceColor', line_color(i,:) )<br> end</p> <p>% manualy plot errorbars<br> for i = 1:length(WF_cases_selected)<br> tmp_P = zeros(size(WF_data.shift{i}));<br> for j = 1:WF_cases_n(i)<br> tmp_P(j) = mean(mean( WF_data.WF_Pm{i}{j}(row_start:row_end,:)));<br> end<br> px = WF_data.shift{i} ;<br> py = tmp_P;<br> pw = 0.05;<br> pe = zeros(size(px))+0.01;%for uncertainty value see Bossuyt et al. (2018) Physical Review Fluids. <br> for j = 1:WF_cases_n(i)<br> plot( [px(j)-pw/2 px(j)+pw/2] , [py(j)+pe(j) py(j)+pe(j)],'-', 'Color', line_color(i,:),'LineWidth',0.5)<br> plot( [px(j)-pw/2 px(j)+pw/2] , [py(j)-pe(j) py(j)-pe(j)],'-', 'Color', line_color(i,:),'LineWidth',0.5)<br> plot( [px(j) px(j)],[py(j)-pe(j) py(j)+pe(j)],':', 'Color', line_color(i,:),'LineWidth',0.5)<br> end<br> end<br> xlabel('\Delta_y [D]')<br> ylabel('$\langle P_i /P_1\rangle_{1}^{19}$','Interpreter','Latex')<br> box('on')<br> ylim([0.35 0.66])<br> xlim([-0.1 2.6])<br> legend1 = legend(legend_items');<br> set(legend1,'Location','southeast');<br> print(f1, 'WF_Pm_all','-dpng','-r300')</p> <p>%% average power end of farm<br> row_start = 16;<br> row_end = 19;<br> f2 = figure;<br> set(gcf,'paperposition',[0,0,8.4,4.9])<br> hold on</p> <p>for i = 1 : length(WF_cases_selected)<br> tmp_P = zeros(size(WF_data.shift{i}));<br> for j = 1:WF_cases_n(i)<br> tmp_P(j) = mean(mean( WF_data.WF_Pm{i}{j}(row_start:row_end,:)));<br> end<br> plot( WF_data.shift{i} , tmp_P, line_tick{i} ,'Color', line_color(i,:) ,'MarkerFaceColor', line_color(i,:) )<br> end</p> <p>% manualy plot errorbars<br> for i = 1:length(WF_cases_selected)<br> tmp_P = zeros(size(WF_data.shift{i}));<br> for j = 1:WF_cases_n(i)<br> tmp_P(j) = mean(mean( WF_data.WF_Pm{i}{j}(row_start:row_end,:)));<br> end<br> px = WF_data.shift{i} ;<br> py = tmp_P;<br> pw = 0.05;<br> pe = zeros(size(px))+0.02; %for uncertainty value see Bossuyt et al. (2018) Physical Review Fluids. <br> for j = 1:WF_cases_n(i)<br> plot( [px(j)-pw/2 px(j)+pw/2] , [py(j)+pe(j) py(j)+pe(j)],'-', 'Color', line_color(i,:),'LineWidth',0.5)<br> plot( [px(j)-pw/2 px(j)+pw/2] , [py(j)-pe(j) py(j)-pe(j)],'-', 'Color', line_color(i,:),'LineWidth',0.5)<br> plot( [px(j) px(j)],[py(j)-pe(j) py(j)+pe(j)],':', 'Color', line_color(i,:),'LineWidth',0.5)<br> end<br> end<br> xlabel('\Delta_y [D]')<br> ylabel('$\langle P_i /P_1\rangle_{16}^{19}$','Interpreter','Latex')<br> box('on')<br> ylim([0.27 0.52])<br> xlim([-0.1 2.6])<br> legend1 = legend(legend_items');<br> set(legend1,'Location','southeast');<br> print(f2, 'WF_Pm_end', '-dpng','-r300')</p> <p>%% plot average unsteady loading total farm<br> row_start = 1;<br> row_end = 19;<br> f3 = figure;<br> set(gcf,'paperposition',[0,0,8.4,4.9])<br> hold on<br> for i = 1 : length(WF_cases_selected)<br> tmp_TI = zeros(size(WF_data.shift{i}));<br> for j = 1:WF_cases_n(i)<br> tmp_TI(j) = mean(mean(WF_data.WF_U_rms{i}{j}(row_start:row_end,:)./WF_data.WF_Um{i}{j}(row_start:row_end,:)))*100;<br> end<br> plot( WF_data.shift{i} , tmp_TI , line_tick{i} ,'Color', line_color(i,:) ,'MarkerFaceColor', line_color(i,:))<br> end</p> <p>% manualy plot errorbars<br> for i = 1:length(WF_cases_selected)<br> tmp_TI = zeros(size(WF_data.shift{i}));<br> for j = 1:WF_cases_n(i)<br> tmp_TI(j) = mean(mean(WF_data.WF_U_rms{i}{j}(row_start:row_end,:)./WF_data.WF_Um{i}{j}(row_start:row_end,:)))*100;<br> end<br> px = WF_data.shift{i} ;<br> py = tmp_TI;<br> pw = 0.05;<br> pe = zeros(size(px))+ 0.004*tmp_TI;%for uncertainty value see Bossuyt et al. (2018) Physical Review Fluids. <br> for j = 1:WF_cases_n(i)<br> plot( [px(j)-pw/2 px(j)+pw/2] , [py(j)+pe(j) py(j)+pe(j)],'-', 'Color', line_color(i,:),'LineWidth',0.5)<br> plot( [px(j)-pw/2 px(j)+pw/2] , [py(j)-pe(j) py(j)-pe(j)],'-', 'Color', line_color(i,:),'LineWidth',0.5)<br> plot( [px(j) px(j)],[py(j)-pe(j) py(j)+pe(j)],':', 'Color', line_color(i,:),'LineWidth',0.5)<br> end<br> end<br> xlabel('\Delta_y [D]')<br> ylabel('$ \langle TI \rangle_{1}^{19} [\%]$','Interpreter','Latex')<br> box('on')<br> xlim([-0.1 2.6])<br> legend1 = legend(legend_items');<br> set(legend1,'Location','northeast');<br> print(f3, 'WF_TI_all','-dpng','-r300')</p> <p>%% plot average unsteady loading end of farm<br> row_start = 16;<br> row_end = 19;<br> f4 = figure;<br> set(gcf,'paperposition',[0,0,8.4,4.9])<br> hold on<br> for i = 1 : length(WF_cases_selected)<br> tmp_TI = zeros(size(WF_data.shift{i}));<br> for j = 1:WF_cases_n(i)<br> tmp_TI(j) = mean(mean(WF_data.WF_U_rms{i}{j}(row_start:row_end,:)./WF_data.WF_Um{i}{j}(row_start:row_end,:)))*100;<br> end<br> plot( WF_data.shift{i} , tmp_TI , line_tick{i} ,'Color', line_color(i,:) ,'MarkerFaceColor', line_color(i,:))<br> end</p> <p>% manualy plot errorbars<br> for i = 1:length(WF_cases_selected)<br> tmp_TI = zeros(size(WF_data.shift{i}));<br> for j = 1:WF_cases_n(i)<br> tmp_TI(j) = mean(mean(WF_data.WF_U_rms{i}{j}(row_start:row_end,:)./WF_data.WF_Um{i}{j}(row_start:row_end,:)))*100;<br> end<br> px = WF_data.shift{i} ;<br> py = tmp_TI;<br> pw = 0.05;<br> pe = zeros(size(px))+ 0.01*tmp_TI;%for uncertainty value see Bossuyt et al. (2018) Physical Review Fluids. <br> for j = 1:WF_cases_n(i)<br> plot( [px(j)-pw/2 px(j)+pw/2] , [py(j)+pe(j) py(j)+pe(j)],'-', 'Color', line_color(i,:),'LineWidth',0.5)<br> plot( [px(j)-pw/2 px(j)+pw/2] , [py(j)-pe(j) py(j)-pe(j)],'-', 'Color', line_color(i,:),'LineWidth',0.5)<br> plot( [px(j) px(j)],[py(j)-pe(j) py(j)+pe(j)],':', 'Color', line_color(i,:),'LineWidth',0.5)<br> end<br> end<br> xlabel('\Delta_y [D]')<br> ylabel('$ \langle TI \rangle_{16}^{19} [\%]$','Interpreter','Latex')<br> box('on')<br> xlim([-0.1 2.6])<br> legend1 = legend(legend_items');<br> set(legend1,'Location','northeast');<br> print(f4, 'WF_TI_end','-dpng','-r300')</p> <p> </p>
Detailed insight into gillnet catches: fish directivity and micro distribution
<p>This dataset contains data for gillnets that were deployed in Římov reservoir, South Bohemia, Czech Republic (48°50'55.0"N 14°29'14.0"E). The sampling dates were recorded from July 30 to August 2, 2019. This experiment was conducted to test the bias of gillnets in relation to fish direction capture. To determine if this is a random pattern or if it follows a directional pattern. The dataset includes various terms such as eventID, eventDate, country, countryCode, geodeticDatum, decimalLatitude, decimalLongitude, coordinateUncertaintyInMeters, habitat, waterBody, locality, DEIMS.iD, basisOfRecord, minimumDepthInMeters, maximumDepthInMeters, samplingEffort, samplingProtocol, dynamicProperties, occurrenceStatus, organismQuantity, organismQuantityType, measurementValue, measurementUnit, measurementType, measurementRemarks, organismRemarks, acceptedNameUsageID, scientificName, taxonRank, class, order, family.</p>
INCOME DISPARITIES AMONG MICRO AND SMALL ENTERPRISES: THE DIGITAL DIVIDE IN INDONESIA
<p>Data related to small scale enterprise in relations to the digital aspects by prinvince in Indonesia source from Badan Pusat Statistik, Republic of Indonesia</p> <p>Data was collected and processed as part of the ODDEA (Overcoming Digital Divide Between Europe and Southeast Asia) EU research project (Project ID: HORIZON MSCA-SE 101086381) </p>
Demoulding process assessment of elastomers in micro-textured moulds
<p>Micro-texturing is an increasingly used technique that aims at improving the functional behaviour of components during their useful life and it is applied in different industrial manufacturing processes for different purposes, such as reducing friction on dynamic rubber seals for pneumatic equipment, among others. Micro-texturing is produced on polymer components by transfer from the mould and might critically increase the adhesion and friction between the moulded rubber part with the mould, provoking issues during demoulding, both in the mould itself and in the rubber part. The mould design, the coating release agent applied to the mould surface and the operational parameters of the moulding/demoulding process are fundamental aspects to avoid problems and guarantee a correct texture transfer during the demoulding process. In this work, the lack of knowledge about demoulding processes is addressed with an in-house test rig and a robust experimental procedure to measure demoulding forces (DF) as well as the final quality of the moulded part between thermoset polymers and moulds. After the characterization of several Sol-Gel coatings formulations (inorganic; hybrid) the influence of several parameters is analysed experimentally, i.e.: Sol-Gel efficiency, texture effects, pattern geometry, roughness and material compound. The results obtained from the experimental studies reveal that texture depth is the most critical geometrical parameter showing high scatter among the selected compounds. Finally, the experimental results are used to compute a model through Reduced Order Modelling (ROM) technique for the prediction of DF.</p>
Constraints on the emplacement of Martian nakhlite igneous rocks and their source volcano from advanced micro-petrofabric analysis
<p>Martian nakhlite meteorite electron backscatter data and magma body unit thickness calculation code.</p>
Raw data from Qin et al. (2018) "Modeling the kinetics of hydrogen formation by zerovalent iron: Effects of sulfidation on micro- and nano-scale particles"
<p>Raw hydrogen concentration vs. time data from Qin, H., X. Guan, J. Z. Bandstra, R. L. Johnson, and P. G. Tratnyek (2018) “Modeling the kinetics of hydrogen formation by zerovalent iron: Effects of sulfidation on micro- and nano-scale particles” Environ. Sci. Technol. 52(23): 13887-13896. [10.1021/acs.est.8b04436]</p> <p>This manuscript reports a large set of new concentration vs. time data for dihydrogen (H2) produced by corrosion of granular zerovalent iron (i.e., the hydrogen evolution reaction, HER) in aqueous media relevant to groundwater remediation. Four alternative kinetic models are evaluated by fitting the data using global non-linear regression. Details are given in the main text and supporting information of the (open access) manuscript. </p> <p>The data provided here are in two formats: (i) a .csv file that contains only data and labels, and (ii) a .pxp file that includes the data and graphs (without fits) in the same layout as figures in the original manuscript. The .pxp file was prepared with Igor Pro 8.02 (https://www.wavemetrics.com).</p>
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.