Results 21 to 30 of about 25,090 (299)

The Beast Within, the Beast Without

open access: yesVenezia Arti, 2023
Drawing on and accentuating classical motifs, the surfaces of Renaissance armour are inhabited by an impressive variety of animal exuviae: leonine protomes and paws, ram’s horns, shells, tails, beaks, and wings.
Borgo, Francesca
doaj   +1 more source

Deep learning approaches to landmark detection in tsetse wing images.

open access: yesPLoS Computational Biology, 2023
Morphometric analysis of wings has been suggested for identifying and controlling isolated populations of tsetse (Glossina spp), vectors of human and animal trypanosomiasis in Africa.
Dylan S Geldenhuys   +8 more
doaj   +1 more source

Dissection of Larval and Pupal Wings of Bicyclus anynana Butterflies

open access: yesMethods and Protocols, 2020
The colorful wings of butterflies are emerging as model systems for evolutionary and developmental studies. Some of these studies focus on localizing gene transcripts and proteins in wings at the larval and pupal stages using techniques such as ...
Tirtha Das Banerjee, Antónia Monteiro
doaj   +1 more source

Separasi Aliran pada Permukaan Atas Airfoil Kumbang Kelapa dengan Metoda China Clay

open access: yesMetal: Jurnal Sistem Mekanik dan Termal, 2020
This study is aimed at identifying airfoils by mimicking the curved shape of the wings of a flying animal. This interferes with what people did in ancient times to obtain objects capable of flying.
Benny Dwika Leonanda
doaj   +1 more source

Animalopters - towards a new dimension of flight mechanics [PDF]

open access: yesTransport, 2002
Recently, it has been recognised that flapping wing propulsion can be more efficient than conventional propel­lers if applied to very small-scale vehicles, so-called MAVs (micro air vehicles).
J. A. Goszczynski   +3 more
doaj   +3 more sources

Ways that Animal Wings Produce Sound

open access: yesIntegrative and Comparative Biology, 2021
SynopsisThere are at least eight ways that wings potentially produce sound. Five mechanisms are aerodynamic sounds, created by airflow, and three are structural sound created by interactions of solid surfaces. Animal flight is low Mach (M), meaning all animals move at <30% of the speed of sound.
openaire   +2 more sources

Structure and Chemical Organization in Damselfly Calopteryx haemorrhoidalis Wings: A Spatially Resolved FTIR and XRF Analysis with Synchrotron Radiation [PDF]

open access: yes, 2018
Insects represent the majority of known animal species and exploit a variety of fascinating nanotechnological concepts. We investigated the wings of the damselfly Calopteryx haemorrhoidalis, whose males have dark pigmented wings and females have slightly
Sergey Rubanov (2061949)   +15 more
core   +4 more sources

Theoretical modelling of wakes from retractable flapping wings in forward flight [PDF]

open access: yesPeerJ, 2013
A free-wake method is used to simulate the wake from retractable, jointed wings. The method serves to complement existing experimental studies that visualise flying animal wakes.
Ben Parslew, William J. Crowther
doaj   +2 more sources

Animal migration research takes wing [PDF]

open access: yesCurrent Biology, 2018
In the beginning there was great confusion about animal migration. Aristotle, noting that the types of birds around him changed with the seasons, concluded that summer redstarts turned into robins at the onset of winter, and that garden warblers became blackcaps [1]. Others thought that birds disappear in winter because they hibernate submerged in mud.
openaire   +2 more sources

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