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2,001 results for “x-rays”
Cryo-electron microscopic and X-ray crystallographic analysis of the light- driven proton pump proteorhodopsin reveals a pentameric assembly
<p>Data files to Hirschi et al. (2020), J. Struct. Biol.</p>
The efficacy of X-ray micro-computed tomography for acorn worm taxonomy: Balanoglossus occidentalis (manuscript species) from Puget Sound, Washington
<p>Micro-CT scan data of Balanoglossus occidentalis generated with a Zeiss Xradia Versa 520. A first scan was made of the whole specimen with AMC drift correction, 0 beam hardening, voltage of 60 kV, currant of 82 µA, exposure time of 1.7 sec, LE2 source filter, LE6 secondary filter, 1601 Projection numbers, single FOV, vertical stitching and a resolution of 9,0373 µm. Then, a second scan was made focusing on the collar and the base of the proboscis because these regions are particularly informative to taxonomic descriptions of acorn worms. This second scan had a Projection number of 2401 and a resolution of 4.5075 µm. Each scan took 3 hours.</p>
X-ray CT and MAPS data of Hot-dry rock
<p>These multiple scanning experiment image can be used to construct multi-scale multi component digital rock.</p>
X-ray diffraction images of juvenile hormone diol kinase from the silk worm Bombyx mori
<p>X-ray diffraction images of juvenile hormone diol kinase (JHDK) from the silk worm Bombyx mori</p>
Mixed chirality α-helix in a stapled bicyclic and a linear antimicrobial peptide revealed by X-ray crystallography
<p>The upload contains additional primary data associated with the publication <a href="https://doi.org/10.1039/D1CB00124H">https://doi.org/10.1039/D1CB00124H</a>, including raw data in the original file format whenever possible.</p> <p>Data content: HPLC-MS, CD, Vesicle leakage, Molecular Dynamics, Crystallography (primary electron density maps) and Supporting Information.</p>
FIGURE 8. X-ray images showing internal structures. A in The test architecture of Clypeaster (Echinoidea, Clypeasteroida) and its phylogenetic significance
FIGURE 8. X-ray images showing internal structures. A, Clypeaster reticulatus Agassiz, 1863; NHM 1942.12.26.72. B, Clypeaster australasiae (Gray, 1851); NHM 1952.12.9.8. C, Clypeaster fervens Koehler, 1922; NHM 1948.12.9.17. D, Clypeaster japonicus Döderlein, 1885; NHM EE140012. E, Clypeaster rangianus Desmoulins, 1835; NHM 1957.7.2.48. F, Clypeaster rosaceus Linnaeus, 1758; NHM EE14011.
Figure 3 in Trigonotarbus johnsoni Pocock, 1911, revealed by X-ray computed tomography, with a cladistic analysis of the extinct trigonotarbid arachnids
Figure 3. Tomographic reconstruction of Trigonotarbus johnsoni based on specimen NHMUK I. 15860. A, dorsal view. B, fourth right leg, podomeres labelled. C, ventral view. D, ventrolateral view of the coxo-sternal region. Abbreviations: 1–12, segment number; CE1−2, coxal endites 1–2; CH, chelicerae; CL, clypeus; FE, femur; L1−L4, legs 1–4; ME, median eye tubercle; MT, metatarsus; PA, patella; PP, pedipalp; PR, projection; TA, tarsus; TI, tibia; TR, trochanter. Scale bars: A, C = 2 mm, B = 1 mm, D = 0.5 mm.
Figure 1 in Trigonotarbus johnsoni Pocock, 1911, revealed by X-ray computed tomography, with a cladistic analysis of the extinct trigonotarbid arachnids
Figure 1. Reconstructions of representatives of nine trigonotarbid families, shown to scale. A, Palaeocharinus rhyniensis (Palaeocharinidae). B, Archaeomartus levis (Archaeomartidae). C, Anthracomartus hindi (Anthracomartidae). D, Anthracosiro woodwardi (Anthracosironidae). E, Trigonotarbus johnsoni (Trigonotarbidae). F, Lissomartus schucherti (Lissomartidae). G, Aphantomartus pustulatus (Aphantomartidae). H, Eophrynus prestvicii (Eophrynidae). I, Kreischeria wiedei (Kreischeriidae). Scale bar = 10 mm.
Figure 5 in Trigonotarbus johnsoni Pocock, 1911, revealed by X-ray computed tomography, with a cladistic analysis of the extinct trigonotarbid arachnids
Figure 5. The results of the cladistic analysis. The four trees show, as labelled, the agreement subtree and strict consensus of both the equally weighted analysis and implied weights analyses with concavity constants (k) of 0.25, 1, 3, and 10.
Figure 4 in Trigonotarbus johnsoni Pocock, 1911, revealed by X-ray computed tomography, with a cladistic analysis of the extinct trigonotarbid arachnids
Figure 4. An idealized reconstruction of Trigonotarbus johnsoni based on the computed tomography scan of NHMUK I. 15860 and additional hand specimens. Scale bar = 2 mm.
Learning-based landmark detection in pelvis X-Rays with attention mechanism: Data from the Osteoarthritis Initiative
<p>We proposed a new landmark detection task based on the data from Osteoarthritis Initiative. We chose high-quality 544 images taken by the Swissray scanner from OAI bone image dataset. Images of the patients with hip replacement were excluded owing to the lack of anatomical structures that must be predicted, and some of the existing images that influenced the doctors labeling the landmarks were also excluded. In total, data of 524 subjects were collected to develop and validate a deep learning system to predict the landmarks in the pelvis images. According to our research problem, we invited professional doctors to label femoral head center, upper acetabulum rim, innermost point of subchondral sclerosis and teardrop in the pelvis X-Ray, as shown in the Figure 4. Total images were annotated by a radiologist with 7 years of working experience from the First Hospital of Jilin University, and the anatomical positions labeled were reviewed by orthopedic surgeon with 7 years of working experience from the Second Hospital of Jilin University.</p> <p>There are two files in this dataset. "Coordinates_information.xlsx" stored the coordinates of landmarks labeled by radiologist. "original_information.xlsx" was download from Osteoarthritis Initiative, which stored the basic information about X-rays.</p>
FIGURE 1 in First fossil representative of Cerylonidae (Coleoptera: Coccinelloidea) described using X-ray micro-computed tomography, from Eocene Baltic amber
FIGURE 1. Protostomopsis pandema gen. et sp. nov., holotype, No MP/4233/col. AG/no. 9441 [ISEA]: A, B – dorsal habitus photomicrograph, and corresponding X-ray μCT rendering; C, D – ventral habitus photomicrograph, and corresponding X-ray μCT rendering. Scale bars represent 0.25 mm.
FIGURE 7 in First fossil representative of Cerylonidae (Coleoptera: Coccinelloidea) described using X-ray micro-computed tomography, from Eocene Baltic amber
FIGURE 7. Distribution of Ostomopsinae: extant species of Ostomopsis (green), and Eocene record of fossil Protostomopsis pandema gen. et sp. nov. (red).
FIGURE 6 in First fossil representative of Cerylonidae (Coleoptera: Coccinelloidea) described using X-ray micro-computed tomography, from Eocene Baltic amber
FIGURE 6. Protostomopsis pandema gen. et sp. nov., MP/4233/col. AG/no.9441 [ISEA], X-ray μCT rendering of aedeagus: A – dorsal view; B – ventral view; C – lateral view. Abbreviations: ap—apex; ba—base. Scale bar represents 0.1 mm.
FIGURE 3 in First fossil representative of Cerylonidae (Coleoptera: Coccinelloidea) described using X-ray micro-computed tomography, from Eocene Baltic amber
FIGURE 3. Protostomopsis pandema gen. et sp. nov., paratype, No P3300.138 [RSKM], habitus: A – dorsal view; B – ventral view; C – right lateral view. Scale bar represents 0.5 mm.
FIGURE 2 in First fossil representative of Cerylonidae (Coleoptera: Coccinelloidea) described using X-ray micro-computed tomography, from Eocene Baltic amber
FIGURE 2. Protostomopsis pandema gen. et sp. nov., holotype, No MP/4233/col. AG/no. 9441 [ISEA] surrounded by fungal hyphae: A, B – right lateral habitus photomicrograph, and corresponding X-ray μCT rendering; C, D – left lateral habitus phot- omicrograph, and corresponding X-ray μCT rendering. Scale bars represent 0.25 mm.
FIGURE 4 in First fossil representative of Cerylonidae (Coleoptera: Coccinelloidea) described using X-ray micro-computed tomography, from Eocene Baltic amber
FIGURE 4. Protostomopsis pandema gen. et sp. nov., paratype, No P3300.138 [RSKM]: A – habitus, ventrolateral view; B – details of abdomen showing apical margin of ventrite 5. Scale bars represent 0.5 mm for Fig. A, 0.1 mm for Fig. B.
Experimental variation in the spatial deposition of trace metals in feathers revealed using synchrotron x-ray fluorescence
<p>Feathers can be used to investigate exposure to pollution in birds because they are a secondary route for the excretion of trace elements. Evidence based on analytical imaging and spectroscopy suggests that the spatial distribution of the essential trace element zinc within feathers is related to melanin pigmentation. However, our understanding of how trace elements are deposited into growing feathers is poor and has been hampered by a lack of analytical tools to examine the localization of trace elements within a feather. Here, synchrotron micro X-ray fluorescence spectroscopy was used to map zinc directly within the barb and barbules of lesser scaup (<em>Aythya affinis</em>) feathers grown after experimental increases in dietary zinc. The results showed distinct spatial variation in zinc within barbs and barbules, with higher levels observed in the latter. Furthermore, increases in dietary zinc were found to increase the relative levels of zinc throughout the barbules from the base to the tip of the feather. Finally, analysis of feather cross sections revealed that regions of the feather barb and barbules with higher melanosome density also contained higher levels of zinc. These results provide a more detailed understanding of zinc and melanosome arrangement within the feather barb and barbules. Moreover, these results provide further support for the use of feathers as a noninvasive tool to study exposure to trace elements and highlight the utility of X-ray spectroscopy in studies investigating impacts of a rapidly changing environment on<br> wild bird health. </p>
High-resolution X-ray computed tomography images of Bentheim sandstone under elevated stress
<p>A dry sample of Bentheim (or Bentheimer) sandstone was characterized using 3D X-Ray microscopy (Versa XRM-500, XRadia-Zeiss) at three different confining pressures of 1 MPa, 20 MPa, and 30 MPa and two voxel sizes of (1.5854 µm)<sup>3</sup> and (3.3452 µm)<sup>3</sup>. The 5-mm-diameter, 20-mm-long dry sample was placed inside a custom-made pressure sell (Lebedev et al, 2017). The sample was subjected to confining pressure of 20 MPa and 3200 radiographs were acquired, then confining pressure was reduced to 1MPa and the sample was imaged again, finally, the sample was pressurized up to 30MPa and the final image set was taken. Image reconstruction was done using internal software (XRadia-Zeiss).</p>
Dataset for effects of shear zone thickness in root-reinforced soils: Fallow P X-ray CT scans and digital volume correlation data
<p>Dataset for effects of shear zone thickness in root-reinforced soils: Fallow P X-ray CT scans and digital volume correlation data</p>
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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.