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204 results for “microtomography”
FIGURE 3 in The oldest fossil darkling beetle of the genus Neomida Latreille, 1829 (Coleoptera: Tenebrionidae) from Eocene Baltic amber examined with X-ray microtomography
FIGURE 3. Neomida groehni sp. nov., holotype, X-ray micro-CT rendering: A – details of forebody, dorso-lateral view, arrows show marginal epistomal tubercles; B – head, dorsal view, arrows show marginal epistomal tubercles; C – pro-mesothoracic junction, ventral view. Abbreviations: Pstr – prosternal process, MstrE – mesosternal Y-shaped elevation, MstrF – mesosternal intercoxal fovea, Mtrch - mesotrochantine. Not reproduced to the same scale.
FIGURE 2 in The oldest fossil darkling beetle of the genus Neomida Latreille, 1829 (Coleoptera: Tenebrionidae) from Eocene Baltic amber examined with X-ray microtomography
FIGURE 2. Neomida groehni sp. nov., holotype, habitus, X-ray micro-CT rendering: A – dorsal view; B – ventral view with legs; C – lateral view, without legs and antennae; D – the same, with legs an antennae; E – ventral view without legs and antennae; F – anterior view; G – caudal view. Scale bars represent 1 mm.
X-ray microtomography volume rendering of the antennae of Baltelater bipectinatus gen. et sp. nov., holotype, 6685 (MAIG).
<p>X-ray microtomography volume rendering of the antennae of <em>Baltelater bipectinatus </em>gen. et sp. nov. from Eocene Baltic amber, holotype, 6685 (MAIG).</p>
X-ray microtomography volume rendering of the habitus of Baltelater bipectinatus gen. et sp. nov., holotype, 6685 (MAIG).
<p>X-ray microtomography volume rendering of the habitus of <em>Baltelater bipectinatus </em>gen. et sp. nov. from Eocene Baltic amber, holotype, 6685 (MAIG).</p>
X-ray microtomography volume rendering of the aedeagus of Baltelater bipectinatus gen. et sp. nov., holotype, 6685 (MAIG).
<p>X-ray microtomography volume rendering of the aedeagus of <em>Baltelater bipectinatus </em>gen. et sp. nov. from Eocene Baltic amber, holotype, 6685 (MAIG).</p>
FIGURES 14–17. X in Groehnaltica batophiloides, a new genus and species of flea-beetles (Coleoptera Chrysomelidae) from Baltic amber, described using X-ray microtomography
FIGURES 14–17. X-ray μCT renderings of Groehnaltica batophiloides holotype, C 7806 [GPIH], aedeagus: 14—dorsal view; 15—ventral view; 16—lateral view; 17—ventro-lateral view.
FIGURES 4–7. X in Groehnaltica batophiloides, a new genus and species of flea-beetles (Coleoptera Chrysomelidae) from Baltic amber, described using X-ray microtomography
FIGURES 4–7. X-ray μCT renderings of Groehnaltica batophiloides holotype, C 7806 [GPIH], habitus: 4—right lateral view; 5—dorsal view; 6—left lateral view; 7—caudal view. Scale bar represents 0.4 mm.
FIGURES 1–3 in Groehnaltica batophiloides, a new genus and species of flea-beetles (Coleoptera Chrysomelidae) from Baltic amber, described using X-ray microtomography
FIGURES 1–3. Photomicrographs of Groehnaltica batophiloides holotype, C 7806 [GPIH]: 1—habitus, left lateral view; 2— habitus right lateral view; 3—right metatibia and metatarsus, lateral view. Scale bars represent: 0.4 mm for Figs. 1 and 2; 0.2 mm for Fig. 3.
FIGURES 10–13. X in Groehnaltica batophiloides, a new genus and species of flea-beetles (Coleoptera Chrysomelidae) from Baltic amber, described using X-ray microtomography
FIGURES 10–13. X-ray μCT renderings of Groehnaltica batophiloides holotype, C 7806 [GPIH], details of head and prothorax: 10—dorsal view; 11—ventral view; 12—frontal view; 13—right lateral view. Abbreviations: as—antennal socket, c—clypeus, fcl—postantennal callus, fcr—frontoclypeal carina, la—labrum, m—mandible, mp3–mp4—maxillary palpomeres 3 and 4 respectively, o—orbit, os—orbital sulcus, p—prosternal intercoxal process, pc—procoxa, scs—supracallar sulcus, sos—supraorbital sulcus. Scale bar represents 0.4 mm.
FIGURES 8–9. X in Groehnaltica batophiloides, a new genus and species of flea-beetles (Coleoptera Chrysomelidae) from Baltic amber, described using X-ray microtomography
FIGURES 8–9. X-ray μCT renderings of Groehnaltica batophiloides holotype, C 7806 [GPIH], habitus: 8—ventral view; 9—ventral view without legs, showing details of thorax and abdomen. Scale bar represents 0.4 mm.
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>
FIGURE 8. Virtual 3D in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy
FIGURE 8. Virtual 3D isosurface rendering using VGStudio MAX of selected spicules within their skeletal context (A, B) and isolated from it (C, D), 3D-reconstructed from synchrotron radiation-based x-ray micro computed tomography images of the holotype. Virtual isolation (B) and comparative side-to side renderings of megasters (C) and megascleres (D). Micrasters are visualized as small dots, e.g. in the peripheral region in A.
FIGURE 7 in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy
FIGURE 7. Phylogenetic consensus trees of COI sequences shown as a direct comparison between A. maximum likelihood (ML) and B. the 50% majority rule consensus phylogram of the Bayesian approach. Numbers indicate bootstrap values (A) and posterior probabilities (B). Some species are represented by different sampling locations as indicated by indices: 1, Limski canal, Croatia; 2, Elba, Italy; 3, Rathlin Island, Northern Ireland; 4, Rovinj, Croatia.
FIGURE 6 in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy
FIGURE 6. Morphometric correlations between megasters and megascleres in T. leysae sp. nov. A. Diameter of megasters vs. R/C ratio (ray length to radius of the massive spicule center), including linear fitted graphs. Choanosomal megasters (filled circles, Ch, n=85) are significantly smaller (independent t-test; p<0.001) than cortical megasters (filled triangles, Co, n=227). The same applies to R/C values, which are significantly lower for choanosomal megasters (independent t-test; p<0.001), indicating more solid megasters with shorter rays and/or relatively more solid centers. Both differences are also represented by the linear fitted graphs. B. Length of megascleres plotted vs. width. Main and auxiliary megascleres represent two significantly different size classes, in terms of both length and width (independent ttests, p<0.001).
FIGURE 5 in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy
FIGURE 5. Spicule types of T. leysae sp. nov. (A–D; SEM micrographs) in comparison to T. californiana (E–F; drawings modified from Sarà & Corriero 1993, re-evaluated by own light microscopy of spicule preparations from the specimen BMNH 29.8.22.15.). A. Main and auxiliary megascleres. B. The highly variable cortical megasters. C. Choanodermal megasters. D. Micrasters. E. Megasters. F. Micrasters.
FIGURE 1 in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy
FIGURE 1. Type locality of T. leysae sp. nov. in the Northeast Pacific, around Ohiat Islet, Barkley Sound, near Bamfield, Vancouver Island, British Columbia, Canada, North America.
FIGURE 3 in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy
FIGURE 3. Skeletal and overall anatomy of T. leysae sp. nov. (resin slice preparation of the holotype). A. Cross section through cortex (Co) and choanosome (Ch); radial megasclere bundles (rMSB) fan out slightly in the peripheral cortex region. B. – C. Details of the cortex (B) and choanosome (C). The cortex appears solid with almost no subdermal lacunae; it is densely filled with megasters, in contrast to the very low megaster density of the choanosome. Auxiliary megascleres (aMS) are present in the cortical megasclere bundle fans and separately or grouped in the choanosome. D. – G. Asters in the cortex and the choanoderm; peripheral micrasters (ma) are associated with the exopinacoderm (D); megasters (MA) dominate the cortex; the average distance between megasters is lower than one megaster diameter (D & E, see Fig. 4); A peripheral cortical layer 200 – 400 µm thick is almost completely free of megasters (D), subcortical lacunae are present near the inner cortical boundary, thus appearing partly free of megascleres (E); the choanoderm is largely free of megasters (E–F) or they show up in clouds (G), with a much lower density compared to the cortex.
FIGURE 2. A– B in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy
FIGURE 2. A– B. True to scale comparison between the habitus of T. leysae sp. nov. (A, paratype) and T. californiana (B; figure modified from Sarà & Corriero, 1993). C. Tethya leysae sp. nov in situ in Barkley Sound. Asterisks indicate stalkless buds. The image is a scan of a diapositive; neither the used film material nor the scanner was color-calibrated; therefore, the colors might deviate from natural colors (image courtesy of S. Leys, Edmonton).
FIGURE 4. Virtual 3D in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy
FIGURE 4. Virtual 3D reconstructions of the cortical skeleton of T. leysae sp. nov. (holotype) imaged using synchrotron radiation-based x-ray micro computer tomography (SR µCT). The massive megasclere bundles reach diameters of up to 500 µm; there is no free space between asters and megasclere bundles as sometimes seen in other Tethya species; patchy aster-free regions are occupied by canals (tissue not visible in spicule-optimized SR µCT, see Nickel et al. 2006a, b). A. – B. Block diagrams of cortex preparations from the holotype (A) and the paratype (B). C. Detail cropped from the paratype (coordinate system in mm). Additional 3D-renderings of the holotype as well as the paratype are available upon request.
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.
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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
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