Wing scales of male Euploea mulciber ( E. mulciber) and Troides aeacus ( T. aeacus) butterflies were investigated from interest in photonic crystal by scanning electron microscopy and optical reflectance measurement. On the basis of the structural observation, the colouration in different areas in ...
CONSTITUTION: A wing pivot structure of a game robot bird comprises a main wing rotating unit(500), a power unit, a main wing(200), and a panel unit. The main wing rotating unit is provided with the power of a motor and moves up and down. In the plate, a pivot connection part is...
and I wanted to learn if the bird could be identified more objectively. I had a chance to check specimens at Harvard’s MCZ, along with a lot of photographs on the internet, and found a few things that, I think, confirm the identification as Eastern Bluebird. ...
A rib of an airplane wing is prevented from deforming due to a machining load when machining a rivet hole in parts where the rib and a skin are joined. With regard to a rib that provides a connection between first and second spars of the airplane wing, the rib is formed with mounting ...
Structure in the aerial-feeding bat faunas of southeastern Ontario, southern British Columbia, Cameroun, Guyana, and the Philippines is demonstrated on the basis of wing shape and relative ear size. The former is derived from the ratio of the length of the third digit metacarpal to the length ...
2. Of, relating to, or designating the short flight feathers nearest the body on the rear edge of a bird's wing. 3. Chemistry a. Of, relating to, or having a carbon atom that is attached to three other carbon atoms in a molecule. b. Of or relating to the replacement of three ...
Twitter Google Share on Facebook Dictionary </>embed</> Europe standing stone menhir memorial monument portal tomb dolmen cromlech megalith megalithic... noun Synonyms for megalithic structure nounmemorial consisting of a very large stone forming part of a prehistoric structure (especially in western ...
The social environment is a key factor determining fitness by influencing multiple stages of reproduction, including pair formation, mating behavior and parenting. However, the influence of social structure across different aspects of breeding is rarely examined simultaneously in wild populations. We theref...
used a rectangular wing and a simpler corrugated structure. The deformation of the wing was specified. A few years later, Wang et al. (2022) restored a 3D dragonfly forewing model with a high degree of bionics, and their results show that the fold structure can effectively improve the ...
The flapping flight of insects, which have simple wings compared with those of a bird, is an ideal means of travel for microrobots. For the realization of such microflight, reduction of the wing weight is essential. One of the simplest means of trimming the wing mass is to reduce the ...