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244 results for “Obliquity”
Oblique profile of a Tyrannosaurus torosus head. Note the good degree of binocular vision, and the bulgingjaw-closing muscles on what is in effect a little frill at the back-top of the head. in Predatory Dinosaurs of the World
Oblique profile of a Tyrannosaurus torosus head. Note the good degree of binocular vision, and the bulgingjaw-closing muscles on what is in effect a little frill at the back-top of the head.
UAV RGB imagery dataset captured at nadir and oblique angles over pistachio trees in Spain, including images, GCPs, 3D point cloud and orthomosaic.
<p>The dataset comprises 248 images taken in two flights on 29 July 2021 over a pistachio orchard in Spain. In addition, GCPs (ground control points) were collected to improve the photogrammetric process accuracy. The photos were taken using a UAV DJI Phantom Advance quadcopter equipped with a DJI FC6310 RGB 20-megapixel camera. The first flight mission was planned to take nadir images (-90º gimbal pitch degree), whereas the second flight was scheduled to take oblique images (-60º gimbal pitch degree), both at 55 metres above the ground. In addition, the images were used to generate a 3D point cloud, DEM and orthomosaic, which were included in the dataset.This dataset is useful for precision agriculture researchers interested in photogrammetric reconstruction.</p>
EEG (128 ch) on presentation of cardinal and oblique grids
<p><strong>Subjects</strong></p> <p>The study involved 20 subjects (9 women and 11 men) without signs of pathology, without the absence of complaints and severe neurological symptoms (found by questioning). The average age of volunteers is 22.5±4 years. In all cases, the subjects were informed about the methodology, which was approved by the ethics committee of the Institute of Higher Nervous Activity and Neurophysiology of RAS (protocol No. 5 dated 02.12.2020). Recordings were made in 2020 and 2021.</p> <p><strong>Registration</strong></p> <p>Registration was carried out on a 128-channel Geodesic-400 electroencephalograph during the task. The central electrode Cz was used as a reference electrode. For each subject, the positions of the electrodes were recorded using the Geodesic GPS (Geodesic Photogrammetry System) photographic system. MRI was used to calculate the surfaces of the head, skull, and cerebral cortex.</p> <p><strong>Visual stimulation</strong></p> <p>During the study, the subjects sat in a comfortable chair in a darkened room at a distance of 57 cm from the screen. Illumination at eye level was 3 lux. After recording the background EEG signal for two minutes at rest with eyes closed, the volunteers began to perform the task. Visual stimuli appeared on the screen in the form of a grid with different inclinations: vertical (90°), horizontal (0°), tilt to the left (135°), tilt to the right (45°) The slope types are grouped into two groups: cardinal (90° and 0°) and oblique (45° and 135°). The size of the stimulus on the screen was 4.7 cm, which at a distance of 57 cm from the screen was 4.71 angular degrees. The duration of each stimulus was 100 ms. The interstimulus interval was changed randomly from 3 to 4 seconds. Each stimulus was presented 34 times, also in random order. The total duration of the experiment was about 9 min. The subject, upon presentation of the stimulus, had to recognize the slope of the lines and choose one of the answer options: cardinal or inclined lines by pressing the appropriate key.</p> <p><strong>File codes</strong></p> <table> <tbody> <tr> <td> </td> <td><strong>Code</strong></td> <td><strong>Age</strong></td> <td><strong>Sex</strong></td> <td><strong>MRI</strong></td> </tr> <tr> <td>1</td> <td>E01V3</td> <td>65</td> <td>m</td> <td>*</td> </tr> <tr> <td>2</td> <td>E02</td> <td>18</td> <td>m</td> <td>E02MRI</td> </tr> <tr> <td>3</td> <td>E04</td> <td>22</td> <td>m</td> <td>E04MRI</td> </tr> <tr> <td>4</td> <td>E05</td> <td>18</td> <td>f</td> <td>E05MRI</td> </tr> <tr> <td>5</td> <td>E06V7</td> <td>22</td> <td>f</td> <td>*</td> </tr> <tr> <td>6</td> <td>E07V6</td> <td>18</td> <td>f</td> <td>*</td> </tr> <tr> <td>7</td> <td>E08</td> <td>34</td> <td>m</td> <td>E08MRI</td> </tr> <tr> <td>8</td> <td>E09</td> <td>21</td> <td>f</td> <td>E09MRI</td> </tr> <tr> <td>9</td> <td>E10</td> <td>23</td> <td>f</td> <td>E10MRI</td> </tr> <tr> <td>10</td> <td>E11</td> <td>18</td> <td>m</td> <td>E11MRI</td> </tr> <tr> <td>11</td> <td>E12</td> <td>22</td> <td>m</td> <td>E12MRI</td> </tr> <tr> <td>12</td> <td>E13</td> <td>23</td> <td>m</td> <td>E13MRI</td> </tr> <tr> <td>13</td> <td>E14</td> <td>29</td> <td>m</td> <td>E14MRI</td> </tr> <tr> <td>14</td> <td>E15V1</td> <td>23</td> <td>m</td> <td>*</td> </tr> <tr> <td>15</td> <td>E16</td> <td>21</td> <td>f</td> <td>E16MRI</td> </tr> <tr> <td>16</td> <td>E17V4</td> <td>27</td> <td>m</td> <td>*</td> </tr> <tr> <td>17</td> <td>E18</td> <td>21</td> <td>f</td> <td>E18MRI</td> </tr> <tr> <td>18</td> <td>E19V2</td> <td>23</td> <td>f</td> <td>*</td> </tr> <tr> <td>19</td> <td>E20</td> <td>21</td> <td>f</td> <td>E20MRI</td> </tr> <tr> <td>20</td> <td>E21</td> <td>23</td> <td>f</td> <td>E21MRI</td> </tr> </tbody> </table> <p>* The subject was recorded MEG in 2022. See his data including MRI in another dataset: https://doi.org/10.5281/zenodo.7458233</p> <p><strong>Acknowledgments</strong></p> <p>The reported study was funded by RFBR, project number 20-015-00475.</p> <p> </p>
Text-fig. 45. Scanning electron microscope (SEM) images of "Staminate structure"; Catefica locality, Portugal. a–c) Staminate structure in oblique apical (a), oblique basal (b) and lateral (c) views showing distinct stalk and head with a cluster of about 20 stamens; note bracts at the base of the structure (asterisks) and probable secretory openings in the anther tissues (arrows). Specimen, Catefica 358-S135451 (a–c). Scale bars = 600 Μm (a–c). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 45. Scanning electron microscope (SEM) images of "Staminate structure"; Catefica locality, Portugal. a–c) Staminate structure in oblique apical (a), oblique basal (b) and lateral (c) views showing distinct stalk and head with a cluster of about 20 stamens; note bracts at the base of the structure (asterisks) and probable secretory openings in the anther tissues (arrows). Specimen, Catefica 358-S135451 (a–c). Scale bars = 600 Μm (a–c).
Text-fig. 41. Scanning electron microscope (SEM) images of "Pollen clump with tricolpate pollen sp. 5"; Catefica locality, Portugal. a) Pollen clump, probably coprolite but containing one kind of pollen; b, c) Pollen grains from pollen clump in oblique equatorial view (b) and polar view (c) showing the three apertures with a distinct aperture margin and the coarse reticulum; d) Detail of wall of a broken pollen grain showing long straight columellae and a thin foot layer. Specimen, Catefica 50-S115858 (a–d). Scale bars = 600 Μm (a), 6 Μm (b, c), 1.5 Μm (d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 41. Scanning electron microscope (SEM) images of "Pollen clump with tricolpate pollen sp. 5"; Catefica locality, Portugal. a) Pollen clump, probably coprolite but containing one kind of pollen; b, c) Pollen grains from pollen clump in oblique equatorial view (b) and polar view (c) showing the three apertures with a distinct aperture margin and the coarse reticulum; d) Detail of wall of a broken pollen grain showing long straight columellae and a thin foot layer. Specimen, Catefica 50-S115858 (a–d). Scale bars = 600 Μm (a), 6 Μm (b, c), 1.5 Μm (d).
Text-fig. 17. Scanning electron microscope (SEM) images of fruits of Serialis communis (a) and Serialis crassitesta (b); Catefica locality, Portugal. a) Oblique lateral view of fruit showing three laterally coherent seeds from which the fruit wall has been almost completely lost showing the prominent micropylar region; b) Oblique lateral view of fruit containing three or four laterally coherent seeds with their micropylar regions oriented to the left. Specimens, Catefica MM92-P0167 (a), Catefica MM92-P0169 (b). Scale bars = 300 Μm (a, b). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 17. Scanning electron microscope (SEM) images of fruits of Serialis communis (a) and Serialis crassitesta (b); Catefica locality, Portugal. a) Oblique lateral view of fruit showing three laterally coherent seeds from which the fruit wall has been almost completely lost showing the prominent micropylar region; b) Oblique lateral view of fruit containing three or four laterally coherent seeds with their micropylar regions oriented to the left. Specimens, Catefica MM92-P0167 (a), Catefica MM92-P0169 (b). Scale bars = 300 Μm (a, b).
Text-fig. 18. Scanning electron microscope (SEM) images of fragmentary flower of Catanthus dolichostemon (a, b) and flower of Saportanthus parvus (c, d); Catefica locality, Portugal. a, b) Fragment of flower bud showing bulky tepals (te) and fleshy stamens (st) in ventral (a) and lateral (b) views; note the long stamen base and small anther with extrorse anther dehiscence (arrows); c, d) Flower in lateral (c) and oblique apical (d) views showing inferior ovary and eight bulky tepals almost completely enclosing the stamens and styles. Specimens, Catefica MM92-P0159 (a, b), Catefica MM285-P0331 (c, d). Scale bars = 300 Μm (a–d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 18. Scanning electron microscope (SEM) images of fragmentary flower of Catanthus dolichostemon (a, b) and flower of Saportanthus parvus (c, d); Catefica locality, Portugal. a, b) Fragment of flower bud showing bulky tepals (te) and fleshy stamens (st) in ventral (a) and lateral (b) views; note the long stamen base and small anther with extrorse anther dehiscence (arrows); c, d) Flower in lateral (c) and oblique apical (d) views showing inferior ovary and eight bulky tepals almost completely enclosing the stamens and styles. Specimens, Catefica MM92-P0159 (a, b), Catefica MM285-P0331 (c, d). Scale bars = 300 Μm (a–d).
Text-fig. 27. Scanning electron microscope (SEM) images of stamens and pollen of Valvidistemon globiferus gen. et sp. nov.; Catefica locality, Portugal. a) Stamen in oblique lateral view showing laterally hinged valves, massive connective between the thecae and prominent, globular, apical extension of the connective; b) Stamen in oblique lateral view on the opposite side from (a) showing broken laterally hinged valves and distinct endothecium cells; c) Detail of stamen showing the large, longitudinally aligned cells of the massive connective, broad, poorly defined stamen base, and the laterally hinged valves of one of the thecae; d) Reticulate pollen attached to the inside of the anther wall. Specimen, Catefica 49-S107779 (holotype, a–d). Scale bars = 600 Μm (a, b), 100 Μm (c), 20 Μm (d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 27. Scanning electron microscope (SEM) images of stamens and pollen of Valvidistemon globiferus gen. et sp. nov.; Catefica locality, Portugal. a) Stamen in oblique lateral view showing laterally hinged valves, massive connective between the thecae and prominent, globular, apical extension of the connective; b) Stamen in oblique lateral view on the opposite side from (a) showing broken laterally hinged valves and distinct endothecium cells; c) Detail of stamen showing the large, longitudinally aligned cells of the massive connective, broad, poorly defined stamen base, and the laterally hinged valves of one of the thecae; d) Reticulate pollen attached to the inside of the anther wall. Specimen, Catefica 49-S107779 (holotype, a–d). Scale bars = 600 Μm (a, b), 100 Μm (c), 20 Μm (d).
Text-fig. 2. Scanning electron microscope (SEM, a, c–f) and synchrotron radiation X-ray tomographic microscopy (SRXTM, b, g) images of the flower of Mugideiriflora portugallica (a, b) and fruits, seeds and pollen of Canrightia resinifera (c–g); Catefica locality, Portugal. a) Oblique, apical view of flower showing multiparted organization with numerous laminar tepals, stamens that are rhomboidal and flattened in transverse section and carpels that are borne on the short conical apex of the receptacle; b) Transverse section (orthoslice xy0800) through basal part of flower showing the elongate bases of the laminar tepals and the flattened rhomboidal bases of the stamens; c) Fruit in lateral view showing irregular surface resulting from the abundant resin bodies in the fruit and hypanthium wall, scars from stamens on the rim of the hypanthium (arrowheads) and the lobed apical stigmatic region (st); d) Broken fruit with one or two seeds missing but showing three pendant, orthotropous seeds with pointed micropylar regions (mi) and a finely pitted crystalliferous endotesta; note the remains of the apical vascular bundles (vb); e) Single seed isolated from a fruit showing two distinct bundles (vb) still attached apically to the chalazal region of the seed, the pointed micropyle (mi) and the finely pitted surface of the crystalliferous endotesta; f) Monocolpate pollen from stigmatic region of fruit showing the long colpus and coarse reticulum; g) Transverse section (orthoslice xy0705) through a fruit showing four seeds all with radially elongated endothelium cells formed from the inner epidermis of the tegmen (asterisks). Specimens, Catefica 150-S174254 (a, b), Catefica 49-S170377 (c), Catefica 49-S170372 (d), Catefica 50-S170401 (e), Catefica 50-S170404 (f), Catefica 50-S174906 (g). Scale bars = 300 Μm (a–e, g), 6 Μm (f). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 2. Scanning electron microscope (SEM, a, c–f) and synchrotron radiation X-ray tomographic microscopy (SRXTM, b, g) images of the flower of Mugideiriflora portugallica (a, b) and fruits, seeds and pollen of Canrightia resinifera (c–g); Catefica locality, Portugal. a) Oblique, apical view of flower showing multiparted organization with numerous laminar tepals, stamens that are rhomboidal and flattened in transverse section and carpels that are borne on the short conical apex of the receptacle; b) Transverse section (orthoslice xy0800) through basal part of flower showing the elongate bases of the laminar tepals and the flattened rhomboidal bases of the stamens; c) Fruit in lateral view showing irregular surface resulting from the abundant resin bodies in the fruit and hypanthium wall, scars from stamens on the rim of the hypanthium (arrowheads) and the lobed apical stigmatic region (st); d) Broken fruit with one or two seeds missing but showing three pendant, orthotropous seeds with pointed micropylar regions (mi) and a finely pitted crystalliferous endotesta; note the remains of the apical vascular bundles (vb); e) Single seed isolated from a fruit showing two distinct bundles (vb) still attached apically to the chalazal region of the seed, the pointed micropyle (mi) and the finely pitted surface of the crystalliferous endotesta; f) Monocolpate pollen from stigmatic region of fruit showing the long colpus and coarse reticulum; g) Transverse section (orthoslice xy0705) through a fruit showing four seeds all with radially elongated endothelium cells formed from the inner epidermis of the tegmen (asterisks). Specimens, Catefica 150-S174254 (a, b), Catefica 49-S170377 (c), Catefica 49-S170372 (d), Catefica 50-S170401 (e), Catefica 50-S170404 (f), Catefica 50-S174906 (g). Scale bars = 300 Μm (a–e, g), 6 Μm (f).
Data sets for heat generation and associated contact temperature during an oblique impact of a deformable particle and a rigid substrate
<p>This dataset contains essential data from the Finite Element Method model predicting heat generation due to friction and plastic deformation during the oblique impact of a deformable particle and a rigid substrate. Part of this data was processed and published in a journal article (<a href="https://doi.org/10.1016/j.powtec.2023.118481">https://doi.org/10.1016/j.powtec.2023.118481</a>). The following is the description of the data files and the associated Figure in the original paper.</p> <p>‘Heat_Elast_Vt.xlsx’ and ‘Temp_Elast_Vt.xlsx’ data for the evolution of heat and nodal contact temperature, respectively, for varying tangential velocity. Data was used in Figs. 7a and 7b in the associated paper</p> <p>‘Heat_Vt.xlsx’ and Heat_Vn.xlsx’ data for the evolution of heat for various tangential velocities and normal velocities, respectively. Data was used in Figs. 8a and 8b in the associated paper.</p> <p>‘Heat_YM.xlsx’ and ‘Temp_YM.xlsx’ data for the evolution of heat and nodal contact temperatures, respectively, for varying Young’s moduli. Data was used in Figs. 9 and 10 in the associated paper.</p> <p>‘Heat_YS.xlsx’ and ‘Temp_YS.xlsx’ data for the evolution of heat and nodal contact temperatures for varying yield strengths. Data was used in Figs. 11 and 12 in the associated paper.</p> <p>‘Heat_Den.xlsx’ and ‘Temp_Den.xlsx’ data for heat and nodal contact temperature evolution, respectively, for varying yield strengths. Data was used in Figs. 13 and 14 in the associated paper.</p> <p> ‘Temp_TC.xlsx’ data for the evolution of nodal contact temperatures for varying thermal conductivities. Data was used in Fig. 15 in the associated paper.</p> <p>‘Temp_HC.xlsx’ data for the evolution of nodal contact temperatures for varying specific heat capacities. Data was used in Fig. 16 in the associated paper.</p>
Fig. 16. Begonia heliantha Tebbitt. A. Habitat. B. Habit. C. Pistillate flower, oblique front view. D in The genus Begonia (Begoniaceae) in Peru
Fig. 16. Begonia heliantha Tebbitt. A. Habitat. B. Habit. C. Pistillate flower, oblique front view. D. Staminate and pistillate flower, front view (note, the pistillate flower is unusual in having four tepals and two styles). All photographs by J.P. Allen in Sandia Province, Puno Region.
Figure 2 in Growth of the oblique-banded grouper (Epinephelus radiatus) on the coasts of Reunion Island (SW Indian Ocean)
Figure 2. - Von Bertalanffy growth curves of Epinephelus radiatus from Reunion Island fitted to all data (n = 57).
Oblique extension favours propagation pulses during continental break-up, Models Results/code version/option file
<p>Models results, code version of pTatin3D used to produce these models and example option file to run the models.</p>
Figure 29. - Leucotrichialerma Angrisano & Burgos, 2002 (redrawn from Angrisano and Burgos 2002). Male genitalia: A segments IX–X, lateral B segment IX, ventral C segment VII–VIII, oblique D phallus, view not specified.
Figure 29. - Leucotrichialerma Angrisano & Burgos, 2002 (redrawn from Angrisano and Burgos 2002). Male genitalia: A segments IX–X, lateral B segment IX, ventral C segment VII–VIII, oblique D phallus, view not specified.
Figure 5. - Female of Teredoruscombfemorus sp. n.: A lateral view B dorsal view C oblique view. Scale bars: 1.0 mm.
Figure 5. - Female of Teredoruscombfemorus sp. n.: A lateral view B dorsal view C oblique view. Scale bars: 1.0 mm.
Figure 3. - Teredoruschiangraiensis sp. n.: A lateral view of female B dorsal view of female C oblique view of male. Scale bars: 1.0 mm.
Figure 3. - Teredoruschiangraiensis sp. n.: A lateral view of female B dorsal view of female C oblique view of male. Scale bars: 1.0 mm.
Figure 1. - Hedotettixtriangularis sp. n.: A lateral view of female B dorsal view of female C oblique view of male. Scale bars: 1.0 mm.
Figure 1. - Hedotettixtriangularis sp. n.: A lateral view of female B dorsal view of female C oblique view of male. Scale bars: 1.0 mm.
Hyperspectral Oblique Plane Microscopy - microparticles
<p>Processed spectra data for microparticle classification and raw hyperspectral images from mixture of microparticles</p>
Doodleverse/Segmentation Zoo Res-UNet models for identifying water in oblique aerial photos of coasts.
<p><strong>Doodleverse/Segmentation Zoo Res-UNet models for identifying water in oblique aerial photos of coasts.</strong></p> <p>These model data are based on images of coasts and associated labels. Models have been fitted to the following types of data</p> <p>1. RGB (3 band): red, green, blue</p> <p>Classes are: {0: water, 1: land}.</p> <p>These files are used in conjunction with Segmentation Zoo*</p> <p>For each model, there are 3 files with the same root name:</p> <p>1. <strong>'.json' </strong>config file: this is the file that was used by Segmentation Gym** to create the weights file. It contains instructions for how to make the model and the data it used, as well as instructions for how to use the model for prediction. It is a handy wee thing and mastering it means mastering the entire Doodleverse.</p> <p> </p> <p>2.<strong> '.h5'</strong> weights file: this is the file that was created by the Segmentation Gym** function `train_model.py`. It contains the trained model's parameter weights. It can called by the Segmentation Gym** function `seg_images_in_folder.py` or the Segmentation Zoo* function `select_model_and_batch_process_folder.py` to segment a folder of images</p> <p> </p> <p>3.<strong> '_modelcard.json'</strong> model card file: this is a json file containing fields that collectively describe the model origins, training choices, and dataset that the model is based upon. There is some redundancy between this file and the `config` file (described above) that contains the instructions for the model training and implementation. The model card file is not used by the program but is important metadata so it is important to keep with the other files that collectively make the model and is such is considered part of the model</p> <p> </p> <p>References</p> <p>* https://github.com/Doodleverse/segmentation_zoo</p> <p>** https://github.com/Doodleverse/segmentation_gym</p>
Supplementary data for: Surface damage of perpendicular and oblique bullet impacts in stone
<p>Controlled experiments were conducted to investigate the surface damage caused by perpendicular and oblique impacts of bullets into sandstone and limestone targets. Individual bullets fired in conditions simulating modern rifles at typical combat distances excavated craters with diameters from 22 to 74 mm and depths from 4 to 24 mm. Limestone target craters were up to twice as large and deep as those in sandstone. These craters have a complex shape consisting of a central excavation surrounded by a shallow dish, compared to the simple bowl shape of most sandstone impacts. Radial fractures extending to the edge of the target block were common in limestone targets. Impacts at an angle of 45° to the surface in both rock types result in asymmetric craters. Two common types of ammunition were compared: the steel-tipped NATO projectile generally produced larger and deeper craters than the projectile that is commonly fired from AK-47 rifles, despite having approximately half the mass of the latter. These results characterise the sort of damage that can be expected at many sites of cultural significance involved in contemporary conflict zones, and have important implications for their conservation.</p>
ScienceDex guides
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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.