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 15 of 15 for “"Tyto alba"”.
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Representation of binaural masking level difference in the inferior colliculus of the barn owl (tyto alba)
Auditory detection and localization is important for animals and humans and crucial for barn owls. In natural environments, the spatial separation of signal and interfering noise improves detectability of the signal. In psychoacoustics experiments this is achieved by changing the spatial attributes …
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Fundamentals of spatial vision in the barn owl (Tyto alba pratincola) : ocular aberrations, grating acuity, contrast sensitivity, and vernier acuity
Optical quality in barn owl eyes was measured with a standard Tscherning-type wavefront aberrometer. The results revealed that barn owl eyes have excellent optical quality. Higher-order aberrations were about 3-fold lower than has been reported in human eyes with similar methods and under …
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Behavioral responses to frequency specific head related transfer functions as filtered by the facial ruff in the Barn owl (Tyto alba)
… properties of HRTFs in the American Barn owl (Tyto alba pratincola, L.). The shape of the owls' HRTFs is crucially influenced by the filtering properties of the facial ruff. Therefore, I analyzed the physical cues used for sound localization which are contained in the HRTFs after filtering by …
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Charakterisierung von Acyl-CoA-Reduktasen
… cloned from the uropygial glands of barn owl (Tyto alba), domestic chicken (Gallus gallus domesticus) and domestic goose (Anser anser domesticus). Heterologous expression studies in Saccharomyces cerevisiae showed that they encode membrane associated enzymes which catalyze a NADPH dependent …
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Leidėjo asmenybės įtaka leidybai /
… “Baltos lankos” Saulius Žukas, the main head of “Tyto alba” - Lolita Varanavičienė and director of the country's largest publishing house “Alma littera” - Arvydas Andrijauskas. These three publishers share common - a leader in its particular characteristics: infinite love for work, great …
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Perfil de eletrólitos e padrões de cristalização da lágrima de aves, répteis e humanos
… of each species: Ara ararauna, Amazona aestiva, Tyto alba, Rupornis magnirostris, Chelonoidis carbonaria and Caiman latirostris; five Caretta caretta and 10 human subjects were submitted to tear sampling using the Schirmer tear test. Aliquot were put in a pool to assess concentrations of total …
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Conserving a charismatic grassland species in Illinois: the barn owl
… have declined. One such species is the barn owl, Tyto alba, which is threatened or endangered in 5 states. The conversion of grasslands into agricultural or developed areas has cost barn owls both suitable foraging habitat and nest sites. To mitigate this loss and support barn owl populations, …
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The impact of a 'trough' Concentrated Solar Power facility on birds and other animals in the Northern Cape, South Africa
… died from a mirror impact. Western Barn Owls (Tyto alba) made up half of the mortalities. Biases in mortality estimates due to searcher efficiency and scavenger removal were substantial only for small birds. Twenty-one animals (3 reptiles, 12 mammals, 6 birds) likely drowned in the evaporation …
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Anatomical, morphometrical and biomechanical studies of barn owls' and pigeons' wings
Wings and feathers of barn owls (Tyto alba) were investigated with anatomical, morphometrical and biomechanical methods in order to specify noise reduction and noise suppressing structures evolved by the owl. Pigeons (Columba livia) with a similar body weight were taken as a reference species. Barn …
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Processing of auditory signals in the forebrain of the Barn Owl : neural mechanisms of across-frequency integration
… center in the forebrain of the barn owl (Tyto alba). Responses were characterized with focus on ITD and frequency tuning. ITD curves to pure tones revealed the preferred interaural phase differences at specific frequencies. In neurons with a linear phase-frequency relation, …
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Factors that affect owl ecology in an agricultural matrix in east Gauteng
… also contains the vulnerable African grass-owl (Tyto capensis), and three other owl species namely, the western barn owl (Tyto alba), the spotted eagle-owl (Bubo africanus) and the marsh owl (Asio capensis). The extensive road network, and particularly the N17 highway in this area have resulted …