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204 results for “microtomography”
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.
FIGURES 13–15 in Phase-contrast synchrotron microtomography reveals the internal morphology of a new fossil species of the Corticaria-sylvicola - group (Coleoptera: Latridiidae)
FIGURES 13–15. Fossil Latridiidae from Baltic amber: 13—Latridius jantaricus, habitus, dorsal view, specimen "12" [HPR]; 14—Latridius alexeevi, habitus, dorso-frontal view, specimen "16" [HPR]; 15—Revelieria groehni, habitus, dorsal view, specimen "046" [ACAB].
FIGURES 1–2 in Phase-contrast synchrotron microtomography reveals the internal morphology of a new fossil species of the Corticaria-sylvicola - group (Coleoptera: Latridiidae)
FIGURES 1–2. Corticaria amberica sp. nov., holotype "017" [ACAB]: 1—habitus, dorsal view; 2—habitus, ventral view.
FIGURES 10–12 in Phase-contrast synchrotron microtomography reveals the internal morphology of a new fossil species of the Corticaria-sylvicola - group (Coleoptera: Latridiidae)
FIGURES 10–12. Aedeagus: 10—Corticaria pinicola, ventral view (drawing by W.H. Rücker); 11—C. abdominalis, ventral view (drawing by W.H. Rücker); 12—C. amberica sp. nov., lateral and ventral views, reconstruction.
FIGURES 3–5 in Phase-contrast synchrotron microtomography reveals the internal morphology of a new fossil species of the Corticaria-sylvicola - group (Coleoptera: Latridiidae)
FIGURES 3–5. Corticaria amberica sp. nov., holotype "017" [ACAB], phase-contrast synchrotron microtomography renderings (BESSY II, Helmholtz-Zentrum, Berlin): 3—habitus, dorsal, ventral and lateral views; 4—location of aedeagus inside abdomen; 5—aedeagus, lateral and ventral views.
FIGURES 6–9 in Phase-contrast synchrotron microtomography reveals the internal morphology of a new fossil species of the Corticaria-sylvicola - group (Coleoptera: Latridiidae)
FIGURES 6–9. Corticaria amberica sp. nov., paratypes: 6—habitus, dorsal view, paratype "0024/2000" [WRUE]; 7— habitus, dorso-frontal view, paratype "612" [GPIH]; 8—habitus, ventral view, paratype "8216" [GPIH]; 9—habitus, dorsal view, paratype "8059" [HPR].
Data from: Deep learning unlocks X‐ray microtomography segmentation of multiclass microdamage in heterogeneous materials
<p>Four-dimensional quantitative characterization of heterogeneous materials using <i>in situ</i> synchrotron radiation computed tomography can reveal 3D sub-micron features, particularly damage, evolving under load, leading to improved materials. However, dataset size and complexity increasingly require time-intensive and subjective semi-automatic segmentations. Here, we present the first deep learning (DL) convolutional neural network (CNN) segmentation of multiclass microscale damage in heterogeneous bulk materials, teaching on advanced aerospace-grade composite damage using ≈65,000 (trained) human-segmented tomograms. The trained CNN machine segments complex and sparse (<<1% of volume) composite damage classes to ≈99.99% agreement, unlocking both objectivity and efficiency, with nearly 100% of the human time eliminated, which traditional rule-based algorithms do not approach. The trained machine is found to perform as well or better than the human due to 'machine-discovered' human segmentation error, with machine improvements manifesting primarily as new damage discovery and segmentation augmentation/extension in artifact-rich tomograms. Interrogating a high-level network hyperparametric space on two material configurations, we find DL to be a disruptive approach to quantitative structure-property characterization, enabling high-throughput knowledge creation (accelerated by two orders of magnitude) via generalizable, ultra-high-resolution feature segmentation.</p>
Data from: Inordinate spinescence: taxonomic revision and microtomography of the Pheidole cervicornis species group (Hymenoptera, Formicidae)
The ant genus Pheidole—for all of its hyperdiversity and global ubiquity—is remarkably conservative with regard to morphological disparity. A striking exception to this constrained morphology is the spinescent morphotype, which has evolved multiple times across distantly related lineages of Indoaustralian Pheidole. The Pheidole cervicornis group contains perhaps the most extraordinary spinescent forms of all Pheidole. Here we present a taxonomic revision of the P. cervicornis group, and use microtomographic scanning technology to investigate the internal anatomy of the thoracic spines. Our findings suggest the pronotal spines of Pheidole majors, are possibly skeletomuscular adaptations for supporting their disproportionately large heads. The 'head support hypothesis' is an alternative to the mechanical defense hypothesis most often used to explain spinescence in ants. The P. cervicornis group is known only from New Guinea and is represented by the following four species, including two described here as new: P. barumtaun Donisthorpe, P. drogon sp. nov., P. cervicornis Emery, and P. viserion sp. nov. The group is most readily identified by the minor worker caste, which has extremely long pronotal spines and strongly bifurcating propodeal spines. The major and minor workers of all species are illustrated with specimen photographs, with the exception of the major worker of P. cervicornis, which is not known.
Dataset for 'Mix and measure II – joint high-energy laboratory powder diffraction and microtomography for cement hydration studies'
<p>Dataset for 'Mix and measure II – joint high-energy laboratory powder diffraction and microtomography for cement hydration studies'. Includes data for: calorimetry, PSD, thermal analysis, LXRPD and μCT.</p>
Fig. 56 in Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3D Cybertaxonomy
Fig. 56. Stacked digital color images of D. venus sp. n. paratype (CASENT0247017—from https://www.antweb.org, photographer Michele Esposito). (A) body in profile, (B) body in dorsal view, (C) head in full-face view.
Fig. 52 in Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3D Cybertaxonomy
Fig. 52. Stacked digital color images of D. schulzei sp. n. paratype (CASENT0247370—from https://www.antweb.org, photographer Michele Esposito). (A) body in profile, (B) body in dorsal view, (C) head in full-face view.
Fig. 51 in Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3D Cybertaxonomy
Fig. 51. Still images from shaded surface display volume renderings of D. poweri (Arnold, 1916) (CASENT0764095) showing virtually segmented body parts. (A) Body in dorsal view, (B) body in profile, (C) head in full-face view, (D) head in dorsal view, (E) head in anterodorsal view, (F) head in anterior view, (G) head in profile, (H) head in ventral view, (I) posterior propodeum in posterior view, (J) petiole in profile, (K) petiole and gaster in profile, (L) petiole in dorsal view, (M) petiole in anterior view, (N) petiole oblique anterior view, (O) gaster in dorsal view, (P) petiole in ventral view, (Q) abdominal sternite 3 in ventral view, (R) mesotibia and mesotarsus in anterior view.
Fig. 48 in Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3D Cybertaxonomy
Fig. 48. Stacked digital color images of D. penthos sp. n. paratype (CASENT0247383—from https://www.antweb.org, photographerWill Ericson). (A) body in profile, (B) body in dorsal view, (C) head in full-face view.
Fig. 42 in Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3D Cybertaxonomy
Fig. 42. Still images from shaded surface display volume renderings of D. maia sp. n. holotype (CASENT0790541) showing virtually segmented body parts. (A) Body in dorsal view, (B) body in profile, (C) head in full-face view, (D) head in dorsal view, (E) head in anterodorsal view, (F) head in anterior view, (G) head in profile, (H) head in ventral view, (I) posterior propodeum in posterior view, (J) petiole in profile, (K) petiole and gaster in profile, (L) petiole in dorsal view, (M) petiole in anterior view, (N) petiole oblique anterior view, (O) gaster in dorsal view, (P) petiole in ventral view, (Q) abdominal sternite 3 in ventral view, (R) mesotibia and mesotarsus in anterior view.
Fig. 41 in Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3D Cybertaxonomy
Fig. 41. Stacked digital color images of D. maia sp. n. holotype (CASENT0790541). (A) Body in profile, (B) body in dorsal view, (C) head in full-face view.
Fig. 39 in Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3D Cybertaxonomy
Fig. 39. Stacked digital color images of D. kalypso sp. n. holotype (CASENT0235468—from https://www.antweb.org, photographerWill Ericson). (A) body in profile, (B) body in dorsal view, (C) head in full-face view.
Fig. 55 in Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3D Cybertaxonomy
Fig. 55. Still images from shaded surface display volume renderings of D. traegaordhi Santschi, 1914 neotype (CASENT0790122) showing virtually segmented body parts. (A) Body in dorsal view, (B) body in profile, (C) head in full-face view, (D) head in dorsal view, (E) head in anterodorsal view, (F) head in anterior view, (G) head in profile, (H) head in ventral view, (I) posterior propodeum in posterior view, (J) petiole in profile, (K) petiole and gaster in profile, (L) petiole in dorsal view, (M) petiole in anterior view, (N) petiole oblique anterior view, (O) gaster in dorsal view, (P) petiole in ventral view, (Q) abdominal sternite 3 in ventral view, (R) mesotibia and mesotarsus in anterior view.
Fig. 53 in Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3D Cybertaxonomy
Fig. 53. Still images from shaded surface display volume renderings of D. schulzei sp. n. holotype (CASENT0790121) showing virtually segmented body parts. (A) Body in dorsal view, (B) body in profile, (C) head in full-face view, (D) head in dorsal view, (E) head in anterodorsal view, (F) head in anterior view, (G) head in profile, (H) head in ventral view, (I) posterior propodeum in posterior view, (J) petiole in profile, (K) petiole and gaster in profile, (L) petiole in dorsal view, (M) petiole in anterior view, (N) petiole oblique anterior view, (O) gaster in dorsal view, (P) petiole in ventral view, (Q) abdominal sternite 3 in ventral view, (R) mesotibia and mesotarsus in anterior view.
Fig. 40 in Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3D Cybertaxonomy
Fig. 40. Still images from shaded surface display volume renderings of D. kalypso sp. n. holotype (CASENT0235468) showing virtually segmented body parts. (A) Body in dorsal view, (B) body in profile, (C) head in full-face view, (D) head in dorsal view, (E) head in anterodorsal view, (F) head in anterior view, (G) head in profile, (H) head in ventral view, (I) posterior propodeum in posterior view, (J) petiole in profile, (K) petiole and gaster in profile, (L) petiole in dorsal view, (M) petiole in anterior view, (N) petiole oblique anterior view, (O) gaster in dorsal view, (P) petiole in ventral view, (Q) abdominal sternite 3 in ventral view, (R) mesotibia and mesotarsus in anterior view.
Fig. 59 in Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3D Cybertaxonomy
Fig. 59. Still images from shaded surface display volume renderings of D. wakanda sp. n. holotype (CASENT0790326) showing virtually segmented body parts. (A) Body in dorsal view, (B) body in profile, (C) head in full-face view, (D) head in dorsal view, (E) head in anterodorsal view, (F) head in anterior view, (G) head in profile, (H) head in ventral view, (I) posterior propodeum in posterior view, (J) petiole in profile, (K) petiole and gaster in profile, (L) petiole in dorsal view, (M) petiole in anterior view, (N) petiole oblique anterior view, (O) gaster in dorsal view, (P) petiole in ventral view, (Q) abdominal sternite 3 in ventral view, (R) mesotibia and mesotarsus in anterior 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
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.