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354 results for “bead”
HyLFM Small Beads 2
<p>Dataset Small Beads 2 (train data)</p> <p>used in</p> <p>Deep learning-enhanced light-field imaging with continuous validation<br> https://doi.org/10.1101/2020.07.30.228924</p>
Mahurjhari or Mahurzari महुरझरी (Maharashtra). Carnelian bead fragments in fields at village.
<p>Mahurjhari or Mahurzari महुरझरी (Maharashtra). Carnelian bead fragments in fields at village.</p>
HyLFM Small Beads 0
<p>Dataset Small Beads 0 (validation data)</p> <p>used in</p> <p>Deep learning-enhanced light-field imaging with continuous validation<br> https://doi.org/10.1101/2020.07.30.228924</p>
HyLFM Small Beads 1
<p>Dataset Small Beads 1 (test data)</p> <p>used in</p> <p>Deep learning-enhanced light-field imaging with continuous validation<br> https://doi.org/10.1101/2020.07.30.228924</p>
The bead on a rotating hoop revisited
<p>Data files for the preprint "The bead on a rotating hoop revisited"</p> <p>by Lisandro A. Raviola, Maximiliano E. Véliz, Horacio D. Salomone, <br> Néstor A. Olivieri, and Eduardo E. Rodríguez</p>
Predicted Arctic Beaded Stream Locations
<p>This dataset contains predicted beaded stream locations from an analysis of high-resolution satellite imagery, using both decision tree regression and object detection from You-Only-Look-Once algorithm (v5). Beaded streams are low-order streams found in high latitude regions near permafrost that form unique 'beads-on-a-string' morphology in a pool-chute structure and represent an important habitat for Arctic grayling fish.</p> <p>Included here are estimated locations of catchments that contain beaded streams from a decision tree classification (MERIT_possible_beads.zip) based on a MERITHydro-Vector dataset (<a href="https://doi.org/10.6084/m9.figshare.13377329">https://doi.org/10.6084/m9.figshare.13377329</a>), circumpolar permafrost dataset (https://doi.org/10.7265/skbg-kf16), and a previous study on Arctic beaded streams (Arp et al., 2015; https://doi.org/10.5194/bgd-11-11391-2014).</p> <p>Also included is a list of catchments that were manually classified or classified by the Arp et al. (2015) paper as beaded (training_catchments.csv), and predicted boxes from the object detection analysis (YOLOv5_prediction_boxes.zip). </p> <p>Finally, code to reproduce some of these results are located in Beaded_Streams-1.0.0.zip, or can be found on github: <a href="https://github.com/merrittharlan/Beaded_Streams/releases/tag/v1.0.0">Release Predicted Arctic Beaded Stream Locations · merrittharlan/Beaded_Streams (github.com)</a>. </p> <p>Please contact the author (mharlan@umass.edu; merritt.e.harlan@gmail.com) with any questions. </p>
Bead tracking experimental ground truth for studying size segregation in bedload sediment transport
<p>Video sequences to study size segregation in bedload transport were recorded. Experiments consisted in mixtures of two-size spherical glass beads entrained by a turbulent supercritical free surface water flow over a mobile bed. The aim is to track all beads over time to obtain trajectories, particle velocities and concentrations, for studying bedload granular rheology, size segregation and associated morphology.</p> <p>This upload consists in :</p> <ul> <li>a 1000-frame experimental image sequence recorded at 130 fps with approximately 400 beads per frame (about 300 coarse and 100 small beads). The image resolution is 1280x320;</li> <li>the ground truth in the directory \result . It was obtained based on a tracking algorithm with subsequent expert modification. The tracking algorithm was developed by H. Lafaye de Micheaux et al. The code implementing the tracking algorithm is available on <a href="https://github.com/hugolafaye/BeadTracking">https://github.com/hugolafaye/BeadTracking</a>. The ground truth is a '.mat' file containing in particular the variable 'trackData' being a cell array of tracking matrices. There is one tracking matrix for each image of the sequence. Complete information on data format is given in the file readme.txt in the github BeadTracking package.</li> <li>In addition it contains three files allowing the user to run the BeadTracking package specifically on the experimental sequence : <ul> <li>sequence_param.txt : parameter file</li> <li>sequence_base_mask.tif : to remove the base</li> <li>template_transparent_bead_rOut10_rIn6.mat : a template for bead detection</li> </ul> </li> </ul>
Figure 10. Photograph small disk beads from our 1982 in The Leluh Royal Tombs and Pre-Contact Mortuary Patterns on Kosrae Island, Micronesia
Figure 10. Photograph small disk beads from our 1982 excavations in the crypt of Tomb-1 in Insru. Beads ranged 0.5-2.1 cm in diameter (most 0.8 cm) and 0.1-0.4 cm in thickness. They were of Conus, Spondylus, and possibly Tridacna and varied in color from a dull white to gray and cream. (Photo by R. Cordy)
Linked collectors and determiners for: New beaded lacewings (Insecta: Neuroptera: Berothidae) from Indochina.
Natural history specimen data linked to collectors and determiners held within, "New beaded lacewings (Insecta: Neuroptera: Berothidae) from Indochina". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/b68120bc-52ea-4eff-bc48-a0631512e1cd">https://bionomia.net/dataset/b68120bc-52ea-4eff-bc48-a0631512e1cd</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/b68120bc-52ea-4eff-bc48-a0631512e1cd">https://gbif.org/dataset/b68120bc-52ea-4eff-bc48-a0631512e1cd</a>. Formatted as a Frictionless Data package.
Text-fig. 46. Scanning electron microscope (SEM) images of monocolpate pollen of Teebacia hughesii gen. et sp. nov. pollen from a stamen fragment; Torres Vedras locality, Portugal. a) Holotype; stamen fragment showing elongated pollen sacs that yielded the pollen in this Text-figure (d, e); b) Detail of detached reticulum showing inner surface of muri and scattered columellae; note the finely granular covering of the muri and columellae; c, d) Detail of reticulum showing the outer surface of muri with supratectal ornamentation of narrow ridges; note orbicules attached to the reticulum (d); e, f) Pollen grains showing loose, beaded, reticulum with long columellae; note continuous muri bordering the apertures and densely spaced minute orbicules lining the inner surface of the anther wall (e, arrowheads). Specimens, TV44-S136666 (holotype; a, d, e), TV44-S149207 (b, c, f). Scale bars 300 Μm (a), 6 Μm (e, f), 3 Μm (b), 1.5 Μm (c), 1.2 Μm (d). in The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community
Text-fig. 46. Scanning electron microscope (SEM) images of monocolpate pollen of Teebacia hughesii gen. et sp. nov. pollen from a stamen fragment; Torres Vedras locality, Portugal. a) Holotype; stamen fragment showing elongated pollen sacs that yielded the pollen in this Text-figure (d, e); b) Detail of detached reticulum showing inner surface of muri and scattered columellae; note the finely granular covering of the muri and columellae; c, d) Detail of reticulum showing the outer surface of muri with supratectal ornamentation of narrow ridges; note orbicules attached to the reticulum (d); e, f) Pollen grains showing loose, beaded, reticulum with long columellae; note continuous muri bordering the apertures and densely spaced minute orbicules lining the inner surface of the anther wall (e, arrowheads). Specimens, TV44-S136666 (holotype; a, d, e), TV44-S149207 (b, c, f). Scale bars 300 Μm (a), 6 Μm (e, f), 3 Μm (b), 1.5 Μm (c), 1.2 Μm (d).
Fibrin bead assay with VEGF-A stimulation.
<p>Confocal microscopy images of fibrin bead assay. </p> <p>Related article for citation: <a href="https://www.nature.com/articles/s41598-023-33090-6">https://www.nature.com/articles/s41598-023-33090-6</a> "SproutAngio: an open-source bioimage informatics tool for quantitative analysis of sprouting angiogenesis and lumen space"</p> <p>Cells: Human umbilical vein endothelial cells (HUVECs) were isolated, maintained in PromoCell Endothelial Cell Growth Medium (Heidelberg, Germany) with 1X endothelial growth kit addition, and used in passage 2. Human lung pulmonary fibroblasts (hPFs) were purchased from PromoCell, maintained in DMEM with 10% FBS, and used in passage 8.</p> <p>Experimental groups with VEGF-A concentrations: Group1 (no VEGFA), Group2 (1 ng/ml VEGFA), Group3 (10 ng/ml VEGFA), Group4 (20 ng/ml VEGFA), Group5 (50 ng/ml VEGFA)</p> <p>We used VEGF-A from R&D Systems, Minneapolis, MN for the stimulation. Media change and VEGF-A stimulation were done on days 0,2,4,6. Assay fixation was on day 7.</p> <p>Staining: DAPI staining for nuclei, phalloidin staining for F-actin.</p>
Text-fig. 7. Scanning electron microscope (SEM, a–c, e, f) and synchrotron radiation X-ray tomographic microscopy (SRXTM, d) images of fruits and pollen grains of Hedyflora crystallifera; Catefica locality, Portugal. a, b) Lateral view of fruits showing the remains of apical tepals and remains of the hypanthium, which is thicker on the edges of the fruit in (b) (arrows); c) Detail of hypanthium surface between the thickenings on the edges of the fruit showing polygonal cells with a central papilla; d) Transverse section (orthoslice xy0600) of fruit and seed showing the finely crystalliferous endotesta (arrowhead) and sclerified outer tegmen (asterisk); e) Distal view of pollen grain from surface of fruit showing the poorly defined tetrachotomocolpate aperture (daggers indicating the four arms of the aperture) and semi-tectate, reticulate tectum; f) Detail of pollen wall showing narrow muri with indistinctly beaded surface ornamentation of minute verrucae in poorly defined rows and supported by long columellae. Specimens, Catefica 49-S172313 (a), Catefica 49-S153159 (b), Catefica 49-S172324 (c), Catefica 49-S172325 (d), Catefica 50-S170453 (e, f). Scale bars = 300 Μm (a, b), 100 Μm (d), 50 Μm (c), 6 Μm (e), 1.5 Μm (f). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 7. Scanning electron microscope (SEM, a–c, e, f) and synchrotron radiation X-ray tomographic microscopy (SRXTM, d) images of fruits and pollen grains of Hedyflora crystallifera; Catefica locality, Portugal. a, b) Lateral view of fruits showing the remains of apical tepals and remains of the hypanthium, which is thicker on the edges of the fruit in (b) (arrows); c) Detail of hypanthium surface between the thickenings on the edges of the fruit showing polygonal cells with a central papilla; d) Transverse section (orthoslice xy0600) of fruit and seed showing the finely crystalliferous endotesta (arrowhead) and sclerified outer tegmen (asterisk); e) Distal view of pollen grain from surface of fruit showing the poorly defined tetrachotomocolpate aperture (daggers indicating the four arms of the aperture) and semi-tectate, reticulate tectum; f) Detail of pollen wall showing narrow muri with indistinctly beaded surface ornamentation of minute verrucae in poorly defined rows and supported by long columellae. Specimens, Catefica 49-S172313 (a), Catefica 49-S153159 (b), Catefica 49-S172324 (c), Catefica 49-S172325 (d), Catefica 50-S170453 (e, f). Scale bars = 300 Μm (a, b), 100 Μm (d), 50 Μm (c), 6 Μm (e), 1.5 Μm (f).
Text-fig. 8. Scanning electron microscope (SEM) images of staminate inflorescences and pollen of Proencistemon portugallicus gen. et sp. nov.; Catefica locality, Portugal. a, b) Staminate inflorescences composed of numerous tetrasporangiate stamens; each stamen lacks a filament and there is no clear indication of other floral organs; note apparently paired arrangement of stamens in (b) (asterisks); c) Pollen in situ in anther from specimen in (a) showing poorly defined trichotomocolpate aperture and semitectate-reticulate tectum; d) Detail of pollen from specimen in (a) showing narrow muri with beaded surface ornamentation; e) Distal and proximal views of pollen in situ in an anther fragment; f) Orbicules attached to surface of in situ pollen from anther fragment. Specimens, Catefica M282-P0341 (holotype, a, c, d), Catefica 150-S174257 (b), Catefica 50-S170393 (e, f). Scale bars = 600 Μm (a, b), 6 Μm (c, e), 1.5 Μm (d, f). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 8. Scanning electron microscope (SEM) images of staminate inflorescences and pollen of Proencistemon portugallicus gen. et sp. nov.; Catefica locality, Portugal. a, b) Staminate inflorescences composed of numerous tetrasporangiate stamens; each stamen lacks a filament and there is no clear indication of other floral organs; note apparently paired arrangement of stamens in (b) (asterisks); c) Pollen in situ in anther from specimen in (a) showing poorly defined trichotomocolpate aperture and semitectate-reticulate tectum; d) Detail of pollen from specimen in (a) showing narrow muri with beaded surface ornamentation; e) Distal and proximal views of pollen in situ in an anther fragment; f) Orbicules attached to surface of in situ pollen from anther fragment. Specimens, Catefica M282-P0341 (holotype, a, c, d), Catefica 150-S174257 (b), Catefica 50-S170393 (e, f). Scale bars = 600 Μm (a, b), 6 Μm (c, e), 1.5 Μm (d, f).
3D models of bead, pendant and softstone vessel fragments found during the 2021 excavations at Kalba (K4)
<p>The 3D models of the three objects were created within the joint excavations project at Kalba (K4), United Arab Emirates, of the Sharjah Archaeology Authority (SAA), the Austrian Archaeological Institute (OeAI) of the Austrian Academy of Sciences (OeAW) and the Leibniz-Zentrum für Archäologie (LEIZA).</p> <p>For each object the following data are available: 3D model with colour values reflecting the curvature (MSII filter) in ply format, texture image for the 3D model in png format, metadata of the 3D acquisition and processing in ttl and json format.</p> <p>The 3D models were created with the Structure from Motion (SfM) technique using Agisoft Metashape software. The images were taken with a Nikon Z50 mirrorless camera and a 90 mm lens. The models obtained were post-processed using GigaMesh (https://gigamesh.eu) to calculate curvature with the MSII built-in filter and to create scaled 2D views. The export of the 3D metadata with information about the 3D model and the 3D acquisition and processing was done with pyhton scripts in agisoft metashape (https://doi.org/10.5281/zenodo.7468298).</p>
Optical projection tomography images of Invitrogen™ beads
<p>Optical projection tomography (OPT) dataset from samples consisting of optical beads embedded in hydrogel.</p> <p>Used beads were commercially available from Thermo Fischer Scientific Inc.: Invitrogen™ Countbright™ (catalog number F8844) and Invitrogen™ FluoSpheres 505/515 (catalog number C36950). Beads were prepared in 2\% agarose gel and placed inside fluorinated ethylene propylene tube having inside diameter of 1 mm.</p>
Sandstone Bead, SJ13
Bead, sandstone, bidirectional drill direction, string ware, North Florida, Archaic (6200-5200 ya) Part of the Coontie Island Collection, SJ13_247 Model by Emma Dietrich This model was made using RealityCapture software by Capturing Reality. Interior mesh reconstruction made using Geomagic Wrap. Source: Objaverse 1.0 / Sketchfab
Jasper Barrel Bead, SJ13
Barrel bead, jasper, unidirectional drill direction, North Florida, Archaic (6200-5200 ya) Part of the Coontie Island Collection, SJ13_270 Model by Emma Dietrich This model was made using RealityCapture software by Capturing Reality. Source: Objaverse 1.0 / Sketchfab
Jasper Bead, SJ13
Bead, jasper, unidirectional drill direction, North Florida, Archaic (6200-5200 ya) Part of the Coontie Island Collection, SJ13_271 Model by Emma Dietrich This model was made using RealityCapture software by Capturing Reality. Interior mesh reconstruction made using Geomagic Wrap. Source: Objaverse 1.0 / Sketchfab
Locust Effigy Bead
Locust Effigy Bead "Bertha Hale Bead" Oolitic Chert? Middle Archaic Period 8000-5000 BCE Macon Ridge, Louisiana 1616 Photos in 64 stacks. Sony a7ii, Laowa 85mm f/5.6 X2 Macro. ISO 100, 1/80th, f/11 Lightroom, HeliconFocus, Metashape Photography scale by [Mikail Antonov](https://sketchfab.com/xeofox) Source: Objaverse 1.0 / Sketchfab
Shell Beads (1948a44)
**Small barrel-shaped shell beads (n=465)** Location: Sellers site (31Cy42), Clay County, North Carolina. Period: Mississippian, Qualla phase (AD 1400-1600). Material: marine shell. Dimensions: for scale, the label in the model is 88.2 mm long. Notes: Catalog no. 1948a44. Please note shape distortion along the lower edges of the beads. North Carolina Archaeological Collection, Research Laboratories of Archaeology, University of North Carolina at Chapel Hill. Model by Abigail Gancz. 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.