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660 results for “Biomechanics”
Figure 6 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 6. Lateral aspect cranial reconstructions, with the muscle line of action indicated: (A) Teleidosaurus calvadosii (modified from Eudes-Deslongchamps, 1867–1869); (B) Metriorhynchus superciliosus (composite based upon specimens from NHM and MNHN). The broken line represents the musculus pseudotemporalis–intramandibularis, whereas the solid black line is the musculus depressor mandibulae. The pterygoids are reconstructed based upon teleosaurids.
Figure 15 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 15. Rarefaction plots for two metrics (sum of ranges and sum of variances) that measure metriorhynchoid disparity (all taxa) throughout time. A, sum of ranges. B, sum of variances. The sum of variances shows little obvious relationship with sample size, in keeping with the theoretical robustness of the measure to differences in sample size (see Wills et al., 1994). The sum of ranges curve suggests that, although this measure is highly sensitive to sample size (Wills et al., 1994), the patterns for metriorhynchoids are robust. Notably, the relative ordering of disparity measures from high (Tithonian) to low (Bathonian) is seen at all sample sizes, from N = 3 upwards. Abbreviations: B, Bathonian; C, Callovian; EK, Early Cretaceous; K, Kimmeridgian; O, Oxfordian; T, Tithonian.
Figure 5 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 5. Postcranial marine adaptations of metriorhynchids (Rhacheosaurus gracilis NHM R.3948): (A) tail fluke with an impression of the fleshy upper lobe (the only specimen preserving this feature); (B) hindlimbs, note the high proportion that the pes makes, compared with the tibia–fibula, and how poorly developed the pelvis is.
Figure 8 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 8. Comparative metriorhynchid dental morphology: (A) in situ crowns of Geosaurus giganteus NHM R.1229; (B) isolated crown of Dakosaurus maximus HMN R.4313; (C) in situ crowns of Suchodus durobrivensis NHM R.2618; (D) isolated crown of Suchodus brachyrhynchus HMN R.3386.2; (E) in situ crowns of Cricosaurus schroederi MMGLV#; (F) isolated crowns of Metriorhynchus superciliosus NMW 19 96 G15a. Scale bars: 10 mm. We thank for N. Knötschke for photograph (E).
Figure 2 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 2. Strict consensus of Metriorhynchoidea from Young & Andrade (2009), calibrated by Tethys ammonite zones. See the Appendix for further details regarding genera and taxonomy.
Figure 17 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 17. von Mises stress contour plots for each taxon placed within the phylogenetic context. The left-hand models are those in dorsal aspect (with the appropriate scale), whereas those on the right are the lateral-aspect models (with their own respective scale).
Figure 14 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 14. The disparity (morphological diversity) of metriorhynchoids through time, based on two metrics (sum of ranges and sum of variances, derived from a PCO analysis; see text for details). A, B, disparity of all metriorhynchoids through time. C, D, disparity of metriorhynchines through time. E, F, disparity of geosaurines through time. Squares represent the disparity metric and error bars denote 95% confidence intervals, based on bootstrapping. There are no error bars for the Early Cretaceous geosaurines because of the small sample size (N = 2).
Figure 9 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 9. Species diversity of Metriorhynchoidea (both taxic and phylogenetically corrected) for each stage subdivision.
Figure 13 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 13. Principle coordinates cladistic character morphospace, delimited by the first two axes. The black ellipse contains the metriorhynchine taxa, whereas the grey ellipse contains the Geosaurinae.
Figure 12 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 12. Relative warps morphospace subdivided into three time bins: (A) Callovian; (B) Oxfordian–Kimmeridgian; (C) Tithonian–Berriasian.
Figure 3 in Mandibular biomechanics of Crocuta crocuta, Canis lupus, and the late Miocene Dinocrocuta gigantea (Carnivora, Mammalia)
Figure 3. Stress distributions in the mandible of Crocuta crocuta in A, p3; B, p4, and C, m1 biting scenarios. Colour spectrum represents stress magnitude, with blue as low stress and white relatively high stress.
Figure 6 in Mandibular biomechanics of Crocuta crocuta, Canis lupus, and the late Miocene Dinocrocuta gigantea (Carnivora, Mammalia)
Figure 6. Cross-section strain profiles for (from left to right): p3–p4, p4–m1, and post-m1 interdental spaces in A, Crocuta crocuta, B, Dinocrocuta gigantea, and C, Canis lupus during a p3 bite. View is from rostral towards caudal; buccal is to the right.
Figure 2 in Mandibular biomechanics of Crocuta crocuta, Canis lupus, and the late Miocene Dinocrocuta gigantea (Carnivora, Mammalia)
Figure 2. Muscle attachment sites on the mandible finite element models, with Crocuta crocuta as an example. The light areas on top of the ascending ramus and in the mandibular fossa are attachment sites for the temporalis. The light area on the angular process is the attachment site of the masseter. The internal pterygoid attachment (not shown) is on the medial side of the angular process.
Figure 5 in Mandibular biomechanics of Crocuta crocuta, Canis lupus, and the late Miocene Dinocrocuta gigantea (Carnivora, Mammalia)
Figure 5. Median strain values at different bite positions for Crocuta crocuta (open diamond), Canis lupus (filled triangle), and Dinocrocuta gigantea (open square).
Figure 1 in Mandibular biomechanics of Crocuta crocuta, Canis lupus, and the late Miocene Dinocrocuta gigantea (Carnivora, Mammalia)
Figure 1. Photos of specimens used in the study. A, Crocuta crocuta [LACM(Mamm) 30655], left mandible; B, Dinocrocuta gigantea (IVPP V15649), right mandible; C, Canis lupus [LACM(Mamm) 23010], left mandible. Specimens are scaled to approximately the same length in figure. Scale bars [over carnassial tooth (m1)] = 10 mm.
Dataset for manuscript: "Biomechanics of tendrils and adhesive pads of the climbing passion flower Passiflora discophora"
<p>The dataset includes data for the article "Biomechanics of tendrils and adhesive pads of the climbing passion flower <em>Passiflora discophora" Journal of Experimental Botany</em>, Volume 73, Issue 4, 24 February 2022, Pages 1190–1203, <a href="https://doi.org/10.1093/jxb/erab456">https://doi.org/10.1093/jxb/erab456</a></p> <p> </p>
An OpenSim-based closed-loop biomechanical wrist model for pathological tremor simulation (dataset)
<p>5 subjects (4 PD and 1 ET) IMU and sEMG raw data supporting the conclusions of the article "An OpenSim-based closed-loop biomechanical wrist model for pathological tremor simulation"</p> <p>name standard:<br>pacientnumber_age_sex_disease_arm_timesincediagnose.mat</p> <p>Xs, Xs1 ... Xs17 are the time vectors for sEMG and IMU. </p> <p> </p> <p><strong><em>If you use any part of this data for your research, please cite our paper:</em></strong></p> <pre>@article{pinheiro2024opensim, title={An OpenSim-based closed-loop biomechanical wrist model for subject-specific pathological tremor simulation}, author={Pinheiro, Wellington C and Ferraz, Henrique B and Castro, Maria Claudia F and Menegaldo, Luciano L}, journal={IEEE Transactions on Neural Systems and Rehabilitation Engineering}, year={2024}, publisher={IEEE} }</pre> <p> </p> <p>Contact: wellington@peb.ufrj.br</p>
Data for: The biomechanics of tooth strength: testing the utility of simple models for predicting fracture in geometrically complex teeth
<p>Teeth must fracture foods while avoiding being fractured themselves. This study evaluated dome biomechanical models used to describe tooth strength. Finite element analysis (FEA) tested whether the predictions of the dome models applied to the complex geometry of an actual tooth. A finite element model (FEM) was built from microCT scans of a human M3. The FEA included three loading regimes simulating contact between 1) a hard object and a single cusp tip, 2) a hard object and all major cusp tips, and 3) a soft object and the entire occlusal basin. Our results corroborate the dome models with respect to the distribution and orientation of tensile stresses, but document heterogeneity of stress orientation across the lateral enamel. This implies that high stresses might not cause fractures to fully propagate between cusp tip and cervix under certain loading conditions. The crown is most at risk of failing during hard object biting on a single cusp. Geometrically simple biomechanical models are valuable tools for understanding tooth function but do not fully capture aspects of biomechanical performance in actual teeth whose complex geometries may reflect adaptations for strength.</p>
A Study on the Biomechanical Mechanisms of Orthotic/Physical Training Correction of Hallux Valgus and Its Impact on the Lower Limbs
ClinicalTrials.gov study NCT07036120. IPD Sharing: NO. Countries: 1. Publications: 1.
Biomechanical and Viscoelastic Properties of Achilles Tendon in Pregnant Women-Pilot Study
ClinicalTrials.gov study NCT05308121. IPD Sharing: UNDECIDED. Countries: 1. Publications: 5.
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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.