Results 11 to 20 of about 25,090 (299)
On the autorotation of animal wings [PDF]
Journal of The Royal Society Interface, 2017 Botanical samaras spin about their centre of mass and create vertical aerodynamic forces which slow their rate of descent. Descending autorotation of animal wings, however, has never been documented. We report here that isolated wings from Anna's hummingbirds, and also from 10 species of insects, can stably autorotate and achieve descent speeds and ...
Victor Manuel Ortega-Jimenez +3 more
openaire +7 more sources
Animal-Based Measures for the On-Farm Welfare Assessment of Geese [PDF]
Animals, 2020 Currently, no specific animal-based measures (ABMs) protocols are available for geese in commercial meat production systems. Following a critical review of the literature and consultation of experts, seven ABMs, potentially valid and feasible for the on ...
Carlo Tremolada +5 more
doaj +2 more sources
Wake development behind paired wings with tip and root trailing vortices: consequences for animal flight force estimates. [PDF]
PLoS ONE, 2014 Recent experiments on flapping flight in animals have shown that a variety of unrelated species shed a wake behind left and right wings consisting of both tip and root vortices.
Jan T Horstmann +3 more
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Inspection of chicken wings and legs for animal welfare monitoring using X-ray computed tomography, visual examination, and histopathology [PDF]
Poultry Science: In broiler chickens, fractures of wings and legs are recorded at poultry slaughterhouses based on the time of occurrence. Prekilling (PRE) fractures occur before the death of animal, so the chicken was still able to experience pain and distress ...
Kacper Libera +6 more
doaj +3 more sources
Glossina from the Republic of the Congo: species identification by MALDI-TOF MS and research of associated micro-organisms [PDF]
ParasiteHuman African trypanosomiasis (HAT) and Animal African trypanosomiasis (AAT), transmitted by Glossina species, remain major health and economic burdens in Africa. Accurate vector identification is essential for effective control strategies.
Bemba Irina Babakana +6 more
doaj +2 more sources
The role of vortices in animal locomotion in fluids
Applied and Computational Mechanics, 2014 The aim of this paper is to show the significance of vortices in animal locomotion in fluids on two deliberately chosen examples. The first example concerns lift generation by bird and insect wings, the second example briefly mentiones swimming and ...
Dvořák R.
doaj +1 more source
Animal Iconographies: Metaphor, Meaning and Identity (or Why Chinese Dragons Don’t Have Wings)
Theoretical Roman Archaeology Journal, 2001 None
Miranda J. Aldhouse Green
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Figure SA,SB,SC from On the autorotation of animal wings
, 2016 Figure SA. Sampled insect wings, from top left to right bottom: Monarch Butterfly, Passion Butterfly, Hawkmoth, Red Skimmer, American Cockroach, Umber Skipper, Marsh Cranefly, Familiar Bluet, Bluebottle Fly and Syrphus Hoverfly. Figure SB. Anna's Hummingbird wing following sequential feather removal: full wing, FW; wing without secondaries, FW-S; wing ...
Manuel Ortega-Jimenez, Victor +3 more
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Neural Regeneration Research, 2021 In a previous study, we used natural butterfly wings as a cell growth matrix for tissue engineering materials and found that the surface of different butterfly wings had different ultramicrostructures, which can affect the qualitative growth of cells and
Shu Wang +5 more
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PLoS ONE, 2023 Elucidating the adaptations that promote flight in animals can aid the understanding of evolution and species divergence, and/or provide inspiration for aerospace engineering and the design of better aerial vehicles.
Andrew K Davis +4 more
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