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2,001 results for “x-rays”
Data from: X-Ray computed tomography of two mammoth calf mummies
Two female woolly mammoth neonates from permafrost in the Siberian Arctic are the most complete mammoth specimens known. Lyuba, found on the Yamal Peninsula, and Khroma, from northernmost Yakutia, died at ages of approximately one and two months, respectively. Both specimens were CT-scanned, yielding detailed information on the stage of development of their dentition and skeleton and insight into conditions associated with death. Both mammoths died after aspirating mud. Khroma's body was frozen soon after death, leaving her tissues in excellent condition, whereas Lyuba's body underwent postmortem changes that resulted in authigenic formation of nodules of the mineral vivianite associated with her cranium and within diaphyses of long bones. CT data provide the only comprehensive approach to mapping vivianite distribution. Three-dimensional modeling and measurement of segmented long bones permits comparison between these individuals and with previously recovered specimens. CT scans of long bones and foot bones show developmental features such as density gradients that reveal ossification centers. The braincase of Khroma was segmented to show the approximate morphology of the brain; its volume is slightly less (∼2,300 cm3) than that of neonate elephants (∼2,500 cm3). Lyuba's premaxillae are more gracile than those of Khroma, possibly a result of temporal and/or geographic variation but probably also reflective of their age difference. Segmentation of CT data and 3-D modeling software were used to produce models of teeth that were too complex for traditional molding and casting techniques.
X-ray microtomography as a tool for investigating the petrological context of Precambrian cellular remains
<p>Supplementary information from the paper "X-ray microtomography as a tool for investigating the petrological context of Precambrian cellular remains", features in a Geological Society Publication in memory of Professor Martin Brasier, University of Oxford.</p> <p>Datasets comprise:<br> -- A zipped Drishti volumes for all CT scans reported in the paper, which can be used for both 3D visualisations and to inspect the underlying data.<br> -- A .7z split zip file of one Drishti volume above 2GB.<br> -- An HDMI movie showing digital visualisations for all of the scans reported in the paper. </p>
FIGURES 11–12 in First fossil Micropholcommatidae (Araneae), imaged in Eocene Paris amber using X-Ray Computed Tomography
FIGURES 11–12. Photographs of Cenotextricella simoni sp. nov. (male holotype, MNHN PA 327) using traditional light microscopy. (1) dorsal view; (2) ventral view. See Fig. 5 for scale.
FIGURES 1–10 in First fossil Micropholcommatidae (Araneae), imaged in Eocene Paris amber using X-Ray Computed Tomography
FIGURES 1–10. VHR-CT scans of Cenotextricella simoni sp. nov. (male holotype, MNHN PA 327). (1) dorsal view; (2) ventral view; (3) anterior view; (4) posterior view; (5) lateral view; (6) lateral sectioned view; (7) right pedipalp dorsal view; (8) right pedipalp posterior view; (9) left pedipalp retrolateral view; (10) right pedipalp prolateral view. Abbreviations: ALE, anterior lateral eye; AME, anterior median eye; c, conductor; cy, cymbium; ds, dorsal abdominal scutum; e, embolus; fe, femur; mt/t, metatarsus/tarsus joint; pa, patella; PLE, posterior lateral eye; PME, posterior median eye; st, sternum; th, tibial hook; ti, tibia; vs, ventral abdominal scutum.
FIGURES 1–7 in Description of a new genus and two new species of Leiodidae (Coleoptera) from Baltic amber using phase contrast synchrotron X-ray microtomography
FIGURES 1–7. External and internal morphology of Catops perkovskyi sp. n. (holotype) by PPC-SRμCT. 1, habitus dorsal view. 2, habitus lateral view. 3, antenna. 4, front leg. 5, aedeagus, lateral view. 6, aedeagus, dorsal view. 7, apex of aedeagus, dorsal view.
FIGURES 8–17 in Description of a new genus and two new species of Leiodidae (Coleoptera) from Baltic amber using phase contrast synchrotron X-ray microtomography
FIGURES 8–17. External and internal morphology of Tafforeus cainosternus sp. n. (holotype) by PPC-SRμCT. 8, habitus dorsal view. 9, habitus lateral view. 10, prosternum and procoxal cavities from behind (pp = triangular prosternal process). 11, antenna. 12, protarsus, dorsal view. 13, mesotarsus, dorsal view. 14, posterior leg (th=ventral tooth). 15, mesoventral carina (msc) and mesocoxal cavity (mcx), lateral view. 16, aedeagus, lateral view. 17, aedeagus, dorsal view.
3D Cryo Soft X-ray Transmission Microscopy data of Intact Thick Cells for Membrane Segmentation and Quantification
<p>The datasets used for evaluation of the proposed method in R. Cárdenes and C. Zhang et al. "3D Membrane Segmentation and Quantification of Intact Thick Cells using Cryo Soft X-ray Transmission Microscopy: A Pilot Study", PloS One, 2017. (DOI: 10.1371/journal.pone.0174324)</p>
FIGURES 8–21 in A new species of anapid spider (Araneae: Araneoidea, Anapidae) in Eocene Baltic amber, imaged using phase contrast X-ray computed micro-tomography
FIGURES 8–21. CT reconstructions of Balticoroma wheateri new species (male holotype, GPIH). (8) frontal view showing chelicerae and labral spur; (9) view of right pedipalp showing embolus; (10–14) various views of right metatarsus 1, showing y-shaped clasping structure; (15) anterior view of specimen showing the section taken through the chelicerae to produce the raw data slice in Figure 16; (16) raw data slice demonstrating that the chelicerae and clypeal extentions are clearly separated; (20–21) various views of the right pedipalp. C, chelicera; ce, clypeal extension; co, dorsal cymbial outgrowth; cy, cymbium; e, embolus; eb, embolic base; ec, embolic coil;?fc, functional conductor sensu Wunderlich (2004); ls, labral spur; t, tegulum.
FIGURE 1 in A new species of anapid spider (Araneae: Araneoidea, Anapidae) in Eocene Baltic amber, imaged using phase contrast X-ray computed micro-tomography
FIGURE 1. Microphotograph of Balticoroma wheateri new species (male holotype, GPIH). Body length = 1.8 mm.
FIGURES 2–7 in A new species of anapid spider (Araneae: Araneoidea, Anapidae) in Eocene Baltic amber, imaged using phase contrast X-ray computed micro-tomography
FIGURES 2–7. CT reconstructions of Balticoroma wheateri new species (male holotype, GPIH). (2) right lateral view; (3) left lateral view; (4) dorsal view; (5) ventral view; (6) anterior view; (7) posterior view. Body length = 1.8 mm. Mt1, metatarsus 1; ta1, tarsus 1; ti1, tibia 1.
FIGURE 4 A–I in High-resolution X-ray computed tomography of an extant new Donuea (Araneae: Liocranidae) species in Madagascan copal
FIGURE 4 A–I. Donuea collustrata sp. n., male palp. A–C, rl; D–F, ve; G–I, pl; A, D, G, X-ray CT images of right palp of copal specimen, inverted; B, E, H, stereomicroscope photographs of left palp of holotype; C, F, I, drawings of left palp of holotype. Scale bar: 0.25.
FIGURE 2 A–H in High-resolution X-ray computed tomography of an extant new Donuea (Araneae: Liocranidae) species in Madagascan copal
FIGURE 2 A–H. Donuea collustrata sp. n. A, copal piece holding specimen, after trimming; B, copal preserved specimen, do; C, copal specimen, ve; D, frontal view of copal specimen, showing opaque layer of air bubbles; E, leg spination scheme of holotype, legend of unfolded article below; F, copal specimen, reconstruction of habitus, do; G, right male palp of copal specimen, rl; H, left male palp of copal specimen, pl. Scale bars: B, C: 1.0; F: 1.5; H: 0.25.
FIGURE 3 A–M in High-resolution X-ray computed tomography of an extant new Donuea (Araneae: Liocranidae) species in Madagascan copal
FIGURE 3 A–M. Donuea collustrata sp. n., copal specimen, X-ray CT images. A, habitus, ve; B, transversal section of right male palp, showing conductor (green) and embolus (pink) originating from behind MA (blue); C, frontal view of right male palp, colour coding as in B; D, left male palp, pl; E, left male palp, pl-ve; F, left male palp, ve; G, left male palp, rl-ve; H, left male palp, rl; I, right male palp, rl-do view, showing embolus, PTA and RTA; J, right male palp, rl-ve, showing bifid RTA; K, right male palp, rl; L, caudal view of right male palp, showing RTA (left) and PTA (right); M, frontal view of eye region, chilum artificially darkened.
FIGURE 1 A–E in High-resolution X-ray computed tomography of an extant new Donuea (Araneae: Liocranidae) species in Madagascan copal
FIGURE 1 A–E. Donuea collustrata sp. n., holotype. F. Donuea decorsei, holotype, MNHN. A, habitus, do; B, habitus, lat.; C, habitus, ve; D, body, do; E, prosoma, ve; F, left male palp, ve. Scale bars: D, E: 1.0; F: 0.5.
opXRD: Open Experimental Powder X-ray Diffraction Database
<p>In this publication, we provide a new open powder X-ray diffraction (opXRD) dataset that collects a broad range of patterns from experiments. Our opXRD dataset has been curated by collecting the accumulated powder data from multiple large research groups and institutions with high-throughput XRD facilities. It contains pXRD patterns from single and multiphase materials from a wide variety of materials classes. </p>
X-Ray diffraction images from a crystal of GmhA with inhibitor mut148591 - PDB 8V2T
<p>B. pseudomallei GmhA with bound inhibitor (mut148591)</p><p>Crystal form xMJ1156</p><p>FL, WT protein with N-terminal Hexahistidine tag. </p><p>Collected at 1.1 Å</p><p>Rotation about omega. 360 frames at a width of 0.5°/frame = 180° total.</p><p>Raw data integrated and scaled in autoPROC. </p>
X-Ray diffraction images from a crystal of GmhA with inhibitor mut148233 - PDB 8V4J
<p>B. pseudomallei GmhA with bound inhibitor (mut148233)</p><p>Crystal form xMJ1159</p><p>FL, WT protein with N-terminal Hexahistidine tag. </p><p>Collected at 1.075 Å</p><p>Rotation about omega. 600 frames at a width of 0.3°/frame = 180° total.</p><p>Raw data integrated and scaled in autoPROC. </p>
Multiscale drainage dynamics with Haines jumps monitored by stroboscopic 4D X-ray microscopy
<p>This dataset accompanies the article "Multiscale drainage dynamics with Haines jumps monitored by stroboscopic 4D X-ray microscopy" (DOI: 10.1073/pnas.2305890120) and constitutes the segmented volume differences of Haines jump H9 and the associated interface velocities. These datasets are provided as two zip-folders:velocityH9 and jump9.</p> <p>The segmented dataset has the following labels:<br>0: No volume change<br>1: Advancing air phase<br>2: Retracting air phase<br>3: Glass shards</p> <p>The voxel size is 3.66 um.</p> <p>The velocities are provided as .vtk files and can be visualized in open-source software such as Paraview.</p>
A two-frame movie of X-ray induced structural dynamics in single free nanoparticles
Open the record for dataset details and reuse information.
Geometries for "X-ray Absorption Spectra for Aqueous Ammonia and Ammonium: Quantum Mechanical versus Molecular Mechanical Embedding Schemes"
<p>195 clusters of ammonia and ammonium in water, used in <em>"X-ray Absorption Spectra for Aqueous Ammonia and Ammonium: Quantum Mechanical versus Molecular Mechanical Embedding Schemes"</em></p> <p>The geometries were first used in <em>J. Am. Chem. Soc.</em> 2017, 139, 36, 12773–12783, and later in <em>J. Phys. Chem. Lett.</em> 2021, 12, 36, 8865–8871</p> <p> </p> <p> </p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
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.