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21 results for “micro-tomography”
Re-projection alignment for trajectory perturbation estimation in micro-tomography: simulation data
<p>Simulation cone-beam-tomography data sets including:</p> <p>a) Synthetic phantom tomogram (3 spheres + random ellipsoids)</p> <p>b) Forward projection of phantom using low-pitch-helix (LPH) trajectory</p> <p>c) Forward projection of phantom using space-filling (SF) trajectory</p> <p>d) Synthetic per-projection perturbations</p>
X-Rays micro-tomography of 54 Egyptian predynastic ceramic vessels from the MAN (Musée d'Archéologie Nationale-Domaine national du château de Saint-Germain-en-Laye, France) made in the frame of the project TECHNOPREGYPT 2021/43/P/HS3/03262. STACK DATA
<p><span>54 complete pots and sherds from the collection of the <span><span>Musée d’Archéologie Nationale-Domaine national du château de Saint-Germain-en-Laye, France, were scanned with X-Rays microtomography (CT-Scan) to carry out the technological analysis of the samples. The aim was to be able to see the internal structure of the ceramic vessels to reconstruct the manufacturing process. </span></span></span></p> <p><span>The scans are part of the project </span><span>TECHNOPREGYPT</span><em><span> <span>Ceramic technology and the socio-political environment of Predynastic Egypt</span></span></em><span><span> </span></span><span><span>2021/43/P/HS3/03262 directed by dr Jade BAJEOT. </span></span></p> <p><a title="TECHNOPREGYPT website" href="https://technopregypt.iksio.pan.pl/index.php/about-the-project"><span><span>TECHNOPREGYPT website</span></span></a></p> <p> </p> <p><strong>Funding</strong></p> <p><span>This research was led at the Institute of Mediterranean and Oriental Cultures, Polish Academy of Sciences and was </span><span>co-funded by the Polish National Science Centre and the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 945339.</span><strong><span> </span></strong><span>For the purpose of Open Access, the author has applied a CC-BY public copyright license to any Author Accepted Manuscript (AAM) version arising from this submission.</span></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 13 in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 13. Rooted maximum likelihood tree of the Orchomene s.l. complex COI. Bootstrap support is shown for each branch. Hirondellea gigas was used as the outgroup. Ŋe position of Orchomenella rinamontiae is shown in yellow.
Figure 11 in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 11. Orchomenella rinamontiae. Holotype, ♀, 24.4 mm. Less uropods (U1, U2, and U3) and telson (T) in dorsal view. Scale bars: 0.5 mm.
Figure 12 in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 12. Unrooted non-redundant maximum likelihood tree of the Lysianassoidea COI. Leaves represent individual specimens, coloured by genus where this information was available in the NCBI database. Our samples of Orchomenella rinamontiae, from both RNA sequencing and DNA sequencing, are coloured in red. Ŋe area of the tree illustrated in Figure 13 is enclosed by a grey doưed line. A complete list of sequences in each genus group can be found in the Supporting Information (Table S1).
Figure 9. Synchrotron radiation X in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 9. Synchrotron radiation X-ray phase-contrast micro-tomography (A, B) and scanning electron microscopy (C–F) of gnathopods of Orchomenella rinamontiae. Paratypes, ♂♂, 11.3 mm (A, B) and 11.3 and 15.4 mm (C–F). A, lateral view of right gnathopod 2. B, medial view of right gnathopod 2. C, lateral view of less gnathopod 1. D, medial view of right gnathopod 1. E, lateral view of less gnathopod 2. F, medial view of right gnathopod 2. Abbreviations: a, gnathopod 1 lateral spine; b, gnathopod 1 medial spine; c, gnathopod 2 tip of dactyl. Scale bars: 200 µm.
Figure 10 in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 10. Orchomenella rinamontiae. Holotype, ♀, 24.4 mm. Medial view of less gnathopod 2 (Gn2). Scale bars: 1 mm.
Figure 8 in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 8. Orchomenella rinamontiae. Holotype, ♀, 24.4 mm. Right maxilliped (Mxpd) and less inner plate (L inner pl). Scale bars: 0.1 mm for L inner pl; 0.5 mm for Mxpd.
Figure 7 in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 7. Scanning electron microscopy of maxillipeds of Orchomenella rinamontiae. Paratypes, ♂♂, 15.4 and 16.8 mm. A, anterior/dorsal view. B, less dorsal view. C, dorsal view of outer and inner plates. D, higher magnification of the tip of the right outer plate. E, dorsal view of right palp. Scale bars: 200 µm in A–C; 20 µm in D; 100 µm in E.
Figure 1. Synchrotron radiation X in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 1. Synchrotron radiation X-ray phase-contrast micro-tomography of Orchomenella rinamontiae. Paratype, ♂, 11.3 mm. Volume renderings of lateral less view (A) and ventral view (B). Abbreviations: A1, antenna 1; A2, antenna 2; Gn1, gnathopod 1; Gn2, gnathopod 2. Scale bar: 4.0 mm.
Figure 5 in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 5. Scanning electron microscopy of mandibles of Orchomenella rinamontiae. Paratypes, ♂♂, 15.4 and 16.8 mm. A, B, less palp in median view (A) and lateral view (B). C, D, less mandible in median view (C) and dorsal view (D). Abbreviations: i, incisor; l, lacinia mobilis; m, molar process. Scale bars: 200 µm in A, B; 50 µm in C; 40 µm in D.
Figure 4. Synchrotron radiation X in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 4. Synchrotron radiation X-ray phase-contrast micro-tomography of Orchomenella rinamontiae. Paratype, ♂, 11.3 mm. Volume renderings of the mouth in ventral view (A), higher magnification of the right mouthparts in ventral view (B), right mouthparts in median view (C), and mouth in dorsal view with the observation point inside the animal (D). Abbreviations: a, outer plate maxilliped; b, inner plate maxilliped; c, outer plate maxilla 2; d, inner plate maxilla 2; e, palp maxilla 1; f, outer plate maxilla 1; g, inner plate maxilla 1. Scale bars: 200 µm.
Figure 6 in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 6. Scanning electron microscopy of maxillae of Orchomenella rinamontiae. Paratypes, ♂♂, 15.4 and 16.8 mm. A, right maxilla 2 in median view. B, right maxilla 1 in median view. C, less maxilla 1 in median view. D, right maxilla 1 inner plate in median view. E, F, outer plates of right maxilla 1 (E) and less maxilla 1 (F) in median view. G, tip of maxillular palp. Scale bars: 100 µm in A–C; 40 µm in D–G.
Figure 3 in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 3. Scanning electron microscopy of antenna 1 of Orchomenella rinamontiae. Paratype, ♂, 11.3 mm. Calceoli (white arrows) are present on each flagellar article. A–C, neighbouring calceoli are orientated the same on the proximal part of the flagellum (A, B) and rotated by ~90° on the distal part (C). D, a higher magnification of a lateral view of a calceolus. Abbreviation: a, callynophore. Scale bars: 100 µm in A; 20 µm in B, C; 10 µm in D.
Figure 2 in A new Antarctic species of Orchomenella G.O. Sars, 1890 (Amphipoda: Lysianassoidea: Tryphosidae): is phase-contrast micro-tomography a mature technique for digital holotypes?
Figure 2. Scanning electron microscopy of antenna 1 of Orchomenella rinamontiae. Paratype, ♂, 11.3 mm. Scale bar: 200 µm.
Data from: Reconstruction of the multielement apparatus of the earliest Triassic conodont, Hindeodus parvus, using synchrotron radiation X-ray micro-tomography
Earliest Triassic natural conodont assemblages preserved as impressions on bedding planes occur in a claystone of the Hashikadani Formation, which is part of the Mino Terrane, a Jurassic accretionary complex in Japan. In this study, the apparatus of Hindeodus parvus is reconstructed using synchrotron radiation micro-tomography (SR–μCT). This species has six kinds of elements disposed in 15 positions forming the conodont apparatus. Carminiscaphate, angulate, and makellate forms are settled in pairs in the P1, P2, and M positions, respectively. The single alate element is correlated with the S0 position. The S array is a cluster of eight ramiforms, subdivided into two inner pairs of digyrate S1–2 and two outer pairs of bipennate S3–4 elements. The reconstruction is similar to a well-known ozarkodinid apparatus model. In addition, the μCT images show that the 'anterior' and 'posterior' processes of the S1–2 elements faced the caudal and rostral ends of the living conodont body, respectively.
Data from: Reconstruction of the multielement apparatus of the earliest Triassic conodont, Hindeodus parvus, using synchrotron radiation X-ray micro-tomography
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