Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"Ultraviolet Reflectance"”.
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Ultraviolet reflectance of nestling plumage and the provisioning strategies of adult Eastern Phoebes (Sayornis phoebe)
<p>Most songbirds are visually sensitive to ultraviolet (UV) wavelengths and, in some species, variation in the extent to which plumage reflects in the UV range provides information about individual quality that influences mate-choice decisions. Less is known about the possible importance of …
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Guided -Mode Resonance in Planar Photonic Crystals: Application to Sensing
… followed by the demonstration of a near-ultraviolet reflectance filter that provides high reflection efficiency in the 400-450 nm spectral range. The response of photonic crystal label-free biosensors is shown to be greatly improved by the use of a near-ultraviolet device, and this …
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Avian diet and visual perception suggests avian predation selects for color pattern mimicry in bumble bees
… likely to parallel our own. To test this, I used reflectance spectroscopy to measure bumble bee color patches and generated hue scores based on avian color perception. I then compared these scores to human-assigned color classifications and found strong statistical association between human and …
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Floral evolution of long-tubed Erica species
… The first chapter explored the role of ultraviolet colouration by recording its prevalence across Erica pollination syndromes. Ultraviolet was rare in wind-, rodent and small insect-pollinated species, but it was common in bird-pollinated species and ubiquitous in long-proboscid fly …