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Journal Article
Journal: Paleobiology
Published: 01 November 2023
Paleobiology (2023) 49 (4): 700–711.
... and body mass among cursorial birds extending back to the Late Cretaceous. Data from fossil foramina are compared with those of extant species, revealing similar scaling relationships for all cursorial birds and supporting crown bird–like terrestrial locomotor activity. Because the perfusion rate in long...
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Journal Article
Published: 01 March 2023
Journal of Paleontology (2023) 97 (2): 434–453.
... regressions based on humerus length and humerus proximal width of extant penguins yield mean estimates of a live body mass in the range of 148.0 kg (95% CI: 132.5 kg–165.3 kg) and 159.7 kg (95% CI: 142.6 kg–178.8 kg), respectively, for Kumimanu fordycei . A second new species, Petradyptes stonehousei n. gen...
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Journal Article
Journal: Paleobiology
Published: 01 May 2022
Paleobiology (2022) 48 (2): 324–339.
... of measurements, it is possible that fDFA results could partially reflect the role of overall size in determining diet. Certainly, mass plays a role in shaping the diets of mammals (Carbone et al. 1999 ; Price and Hopkins 2015 ; Pineda-Munoz et al. 2016a ), so we must consider the possibility that our...
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Journal Article
Journal: Paleobiology
Published: 01 May 2022
Paleobiology (2022) 48 (2): 210–238.
...Caleb M. Brown; Nicolás E. Campione; Gregory P. Wilson Mantilla; David C. Evans Abstract The end-Cretaceous (K/Pg) mass extinction event is the most recent and well-understood of the “big five” and triggered establishment of modern terrestrial ecosystem structure. Despite the depth of research...
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Journal Article
Journal: Paleobiology
Published: 01 February 2022
Paleobiology (2022) 48 (1): 137–153.
... and Vampyrum spectrum . Also, we reconstructed the body mass of N. magdalenensis to be ~95 g, larger than most insectivorous bats, but smaller than the largest carnivorous bat ( V. spectrum ). Our results confirm that N. magdalenensis was not a specialized carnivore. It remains to be demonstrated...
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Journal Article
Published: 14 July 2021
Canadian Journal of Earth Sciences (2021) 58 (9): 852–869.
... by body mass. The top graph represents the Upper Cretaceous DPF, and the bottom graph represents the Upper Jurassic MOR. The general pattern of the MOR dinosaurian assemblage shows few small taxa and many large taxa. This pattern is more regular than in the DPF, where there is a bimodal abundance...
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Journal Article
Journal: Geology
Published: 12 January 2021
Geology (2021) 49 (5): 551–555.
... be widespread. To explore this possibility, we quantified the fraction of porosity produced by physical weathering, F PP , at three sites with differing climates in granitic bedrock of the Sierra Nevada, California, USA. We found that strain produces more porosity than chemical mass loss at each site...
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Journal Article
Published: 01 January 2021
Reviews in Mineralogy and Geochemistry (2021) 86 (1): 35–95.
... ( Lindemann 1919 ; Lindemann and Aston 1919 ) in 1919 and their separation factors from chemical equilibria lead to an extensive array of applications once the isotope ratio mass spectrometer design of Nier (1947) was available. For example, the temperature dependent isotope separation of isotopically...
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Journal Article
Journal: Paleobiology
Published: 01 November 2020
Paleobiology (2020) 46 (4): 478–494.
... and temporal distributions of body mass have been identified and debated in various ecological circumstances (e.g., Bergman's rule, Cope's rule). Not surprisingly, body size has been portrayed as one of the most direct links between microevolution and macroevolution (Maurer et al. 1992 ; Jablonski 1996...
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Journal Article
Journal: Paleobiology
Published: 01 November 2020
Paleobiology (2020) 46 (4): 550–568.
... make Archosauria a useful clade with which to study the interplay between body size, shape, and locomotor behavior, and how this interplay may have influenced locomotor evolution. Here, digital volumetric models of 80 taxa are used to explore how mass properties and body proportions relate to each...
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Journal Article
Journal: Paleobiology
Published: 01 August 2020
Paleobiology (2020) 46 (3): 304–319.
... from the original data; therefore, whether such morphospaces accurately reflect body-plan disparity or extrinsic factors, such as body size, remains uncertain. We collated nine character–taxon matrices of dinosaurs together with body-mass estimates for all taxa and tested for relationships between body...
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Journal Article
Published: 16 April 2020
Geochemistry: Exploration, Environment, Analysis (2020) 20 (2): 199–204.
...T. Kurt Kyser; Matthew I. Leybourne; Daniel Layton-Matthews Abstract Among the emerging techniques to detect the real footprint of buried ore deposits is isotope tracing. Novel and automated preparation systems such as continuous flow isotope ratio mass spectrometry, off-axis integrated cavity...
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Journal Article
Published: 01 April 2020
Journal of Foraminiferal Research (2020) 50 (2): 195–203.
... of the planktonic Foraminifera Orbulina universa : A source for paleoceanographic information? : Brazilian Journal of Oceanography , v. 67 , p. e19252 . Fisher, C. , 2003 , Planktic foraminiferal porosity: A water mass proxy...
Journal Article
Journal: Paleobiology
Published: 12 September 2019
Paleobiology (2019) 45 (4): 598–611.
... describing body mass. To this data set, we added one new character, the number of upper molars with grinding surfaces (described later), and coded seven additional taxa: the late Neogene South American procyonids Cyonasua and Chapalmalania , FMNH P14407 (a sparassodont from the late Miocene or Pliocene...
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Journal Article
Journal: Paleobiology
Published: 01 May 2019
Paleobiology (2019) 45 (2): 363–377.
... measurements of 69 anatomical features of the shells of 108 live tortoises indicate that the regression between straight carapace length and weight is most significant, with a maximum r 2 > 0.99. This regression is useful for tortoises that weigh between 1.8 and 339 kg. This mass estimate, coupled...
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Journal Article
Journal: PALAIOS
Published: 29 November 2018
PALAIOS (2018) 33 (11): 514–523.
..., over a period of 5 My (from MP24 to MP27), only two occurrences (Rigal-Jouet and Saint-Martin de Casselvi, MP25) have been reported. Based on body mass and the general Hyaenodon body plan, we confidently identify H. leptorhynchus as a cursorial hypercarnivorous predator, hunting prey such as small...
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Journal Article
Published: 01 May 2018
Earthquake Spectra (2018) 34 (2): 459–469.
... an exhaustive literature survey. Instead, we give a cursory background to inform the reader before discussing the design and construction of our DLMs. We examined the dynamic properties (natural frequency and damping ratio) of the constant stiffness and constant mass DLMs by inducing free vibration...
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Journal Article
Published: 01 May 2018
Earthquake Spectra (2018) 34 (2): 941–975.
... fluid–fracture interaction; (d) the dynamic soil–foundation–structure interaction and free-field motion; (e) thermal (heat transfer, solar radiation, hydration, etc.) and ice loads; (f) concrete aging, alkali–aggregate reaction, and creep; and (g) continuum mass concrete cracking and discrete joint...
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Journal Article
Published: 01 May 2018
Earthquake Spectra (2018) 34 (2): 527–548.
... elasto-plastic response idealization, M s is the seismic mass of the structure, and d y and d u are, respectively, the yielding and the ultimate displacement determined from a nonlinear static pushover analysis of the structure (see Lagomarsino et al. 2006 ). Applying a capacity...
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Journal Article
Published: 01 February 2018
Earthquake Spectra (2018) 34 (1): 21–53.
... for chapter 16 of ASCE/SEI 7-16 (2017) began with the 2015 NEHRP provisions ( FEMA 2015 ), but the requirement to include accidental torsion in the NRHA if it is required in the design of the structure was among the changes that were made. Accidental torsion is implemented by shifting the center of mass...
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