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 “"Ossicles"”.
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Study on the development of the mouse ossicles using Micro-CT
Detailed information on how ossicles change in the developing temporal bone would be helpful in understanding biomechanical knowledge of ossicles. In this study, three dimensional structural images of mouse were investigated through Micro-CT to understand developmental anatomy of its ossicles. …
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The study of a 3 3-dimentional structure of the congenital anomalous stape stapes compared with normal s stape stapes using Micro Micro-CT
… the internal structure of congenital anomalous ossicles. Recently, Micro CT scanning technology has been applied to analysis of skeletal structure. The data of normal ossicles and pathologic ossicle destructed by cholesteatoma were reported in our hospital. This study aims to compare the …
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Understanding Hearing Loss in Osteogenesis Imperfecta
… collagen type I mutations affect the middle ear ossicles and hearing function. The central hypothesis of this study is that the bone fragility of OI extends to the middle ear ossicles, where poor bone matrix quality predisposes them to fractures and disrupts efficient sound transmission. …
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Middle ear development: Genetics and disease
… mammalian middle ear is composed of three bony ossicles, the malleus, incus, and stapes that function to conduct sound from the external to the inner ear. Normal development of middle ear structures is integral for transduction of sound, defects resulting in conductive deafness. Mice are reliant …
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The Importance of Keeping the Big Ones: Harvest Slot Limits and Marine Protected Areas for the Management of the Caribbean Spiny Lobster
… <em>P. argus</em> using banding in the gastric ossicles, (2) examining the possibility of reproductive senescence as it relates to body size in <em>P. argus</em>, (3) modeling the potential use of harvest slot limits and MPAs using a two-sex stage-structured matrix model, and (4) assessing the …
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MORPHOLOGY, MATERIAL AND VIBRATORY PROPERTIES OF THE SWIMBLADDER IN THE CARP, CYPRINUS CARPIO
… the anterior chamber, which connects to Weberian ossicles, is adapted for hearing by testing both chambers for material properties. I also determined displacement and auditory responses to mechanical strikes. Wall stress is higher in the posterior, strain in the anterior and modulus lower in the …
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Biochemical approaches to investigate biomineralization of magnesium calcite and aragonite
… proteins or glycosaminoglycans isolated from the ossicles/ shells under study.
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Middle Cambrian linguliformean brachiopods of the Pika and Sullivan formations, southern Canadian Rocky Mountains, Alberta, Canada
… disarticulated trilobite sclerites and eocrinoid ossicles, all of which likely did not experience long-distance transport. Breakage of brachiopod valves is common in grainstone and is also observed alongside rare abrasion in lime mudstone, suggesting occasional bottom turbulence. Only rare …
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A multispectral imaging method and device to detect and quantify the presence of fluid in the middle ear to facilitate the diagnosis and triage of ear infections
… otoscope showed highest contrast between ossicles and fluid at 1000 nm which shows low attenuation of fluid and tympanic membrane at NIR wavelengths. The system is calibrated against a diffuse reflection surface to account for variations in source and detector. Our experiments showed that …
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Mechanical Design of Selected Natural Ceramic Cellular Solids
… and the periodic open-cell structure in starfish ossicles, I systematically investigate the mechanical design strategies of these natural ceramic cellular solids. The three model systems are cuttlefish Sepia officinalis, sea urchin Heterocentrotus mammillatus, and starfish Protoreaster nodosus, …
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The auditory system of the minke whale (Balaenoptera acutorostrata) : a potential fatty sound reception pathway in a mysticete cetacean
… blubber region to the ears and contacting the ossicles. Although odontocetes, or toothed whales, are thought to use specialized “acoustic fats” for sound reception, no such tissues had been described for mysticetes to date. Our study indicates that the basic morphology and biochemical …
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The auditory system of the minke whale (Balaenoptera acutorostrata) : a potential fatty sound reception pathway in a mysticete cetacean
… blubber region to the ears and contacting the ossicles. Although odontocetes, or toothed whales, are thought to use specialized "acoustic fats" for sound reception, no such tissues had been described for mysticetes to date. Our study indicates that the basic morphology and biochemical …
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The evolutionary transition from reptiles to mammals: analyses of body size reduction and separation of middle ear elements from the jaw
… as it is the point at which the middle ear ossicles gain independence from the jaw and can become specialized for hearing. Derived elements, such as the manubrium of the malleus, develop much later, consistent with their subsequent appearance in the fossil record after the origin of mammals. …
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Multiscale Structures and Mechanics of Biomineralized Lattices in Hexactinellid sponges and Echinoderms
… features: 1) microlattice dislocations in ossicles similar to those found in crystals with diamond cubic lattice; 2) a diamond-TPMS microlattice with ca. 50% relative density; and 3) dual-scale crystallographic coalignment between c-axis of the single-crystalline constituent calcite and the …
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Material and Acoustic Properties of Swimbladders of Tilapia and Channel Catfish
Acoustically, teleost swimbladders have been considered resonant underwater bubbles. Contrary results indicating that bladders are tuned less sharply than such a bubble have been explained by damping of surrounding fish tissue. Recent findings in toadfish and weakfish, however, suggest that the …