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 8 of 8 for “"external ear"”.
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Studies on the role of the mammalian external ear in directional hearing
The acoustical properties of the external ears of rabbits, rats and guinea pigs have been investigated by means of microphone or probe implants in the ear canal or tympanic bulla and by cochlear microphone (CM) recordings. The directional properties and transfer functions of the external ears were …
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Studies of the microenvironment and microflora of the canine external ear canal
… components of cerumen from healthy canine ears and those with otitis externa were studied. Interactions between canine cerumen and one member of the resident aural flora, Malassezia pachydermatis were also investigated. Gram-positive, coagulase-negative cocci, and M.pachydermatis were the …
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The Development and Role of Peripheral Auditory Structures in <i>Otocinclus affinis</i>
… bladders and the compound pterotic may act as an external ear for hearing in this taxon, I hypothesized that these swim bladders structures have an acoustical functional in the loricariid <i>Otocinclus affinis</i>. In order to understand the development of these structures in <i>O. affinis</i>, I …
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A Hydrodynamic Sensory Antenna Used By Killifish for Nocturnal Hunting
… animal's perception. For example, the mammalian external ear collects sound and spectrally alters it to increase sensitivity and improve the detection of directionality. The surfacefeeding killifish Aplocheilus lineatus is able to hunt in darkness by detecting surface capillary waves with the …
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Historical Processes and Genetic Implications of Limb Reduction and Loss in an Island Skink Lineage
… Brachymeles using a multi-locus dataset and nearly complete taxonomic sampling. Systematic revisions guided by robust estimates of phylogeny subsequently result in a 125% increase in species diversity. I provide statistical tests of monophyly for all polytypic species and two widespread …
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Characterisation of propionibacterium acnes
… the skin, oral cavity, large intestine and the external ear. Historically, P. acnes is considered to be of low virulence; however, in recent years it has been found as the aetiological agent in various pathologies including acne vulgaris, endophthalmitis, endocarditis, osteomyelitis, …
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Ear Reconstruction. Clinical and physiological evaluations.
… about 2 per 10,000 births. Reconstruction of the external ear is possible by using autologous rib cartilage in three surgical steps: rib cartilage transplantation, ear elevation and final adjustments. Although the aesthetic result is most essential, there are also functional aspects of a …
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Clinical and Histological Characteristics of Melanocytic Nevus in External Auditory Canals and Auricles
Nevi, which consist of nevus cells arising from external auditory canals (EACs) and auricles, are rare and their characteristics are not thoroughly understood. The purpose of this study was to analyze the clinicopathological characteristics of melanocytic nevus (MN) in EACs and auricles. Medical …