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 20 of 114 for “"olfaction"”.
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Hybrid Nanostructures for Artificial Machine Olfaction
<p>The detection of low level concentrations of particles in a gaseous environment is of importance to many fields, especially Homeland Security. The ability to identify ppb concentrations of explosives and their degradation products can aid in the detection of improvised explosive devices (IEDs), …
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Field threshold measures for canine olfaction
The United States Environmental Protection Agency has declared the development of new, portable, and effective detection technology for toxic waste sites a necessity. Current methods are expensive, cumbersome, and often only marginally effective. This project was designed as a first step in a …
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Fluid dynamics of biological and mechanical olfaction
… molecules to their sensors. Understanding the olfaction of animals can also inspire the design of autonomous smelling machines, which are currently limited in their speed and sensitivity. Most previous work on olfaction has focused on the neuroscience of animal olfaction or the algorithms …
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Social emanations: Toward a sociology of human olfaction.
Within the discipline of sociology human olfaction is rich with social significance yet remains a poorly charted frontier. Therefore, the following discourse is aimed toward the development of a foundation for the sociological study of olfaction. It is formed by the dual goals of unearthing the …
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A microscopic model of signal transduction mechanisms: olfaction
… and prediction. One such example of this is olfaction. Molecules cannot necessarily be predicted from a smell, and similarly a smell from molecules. Better understanding of these initial steps, would have important repercussions, especially in the field of rational drug design. So in general …
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Artificial and mammalian olfaction and low-coordinate metalloporphyrin complexes
Part 1 A low-cost yet highly sensitive colorimetric sensor array for the detection and identification of toxic industrial chemicals (TICs) has been developed. The sensor consists of a disposable array of cross-responsive nanoporous pigments whose colors are changed by diverse chemical interactions …
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Exploring relationships between stress and olfaction as mediated by neuropeptide y
The negative correlation between olfactory sensitivity and depression has been well documented, but the biological processes underpinning the relationship are not understood. This study explored a potential relationship between olfactory sensitivity, stress, and resilience to stress, specifically …
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Chemical communication in cerambycid beetles and the molecular basis of olfaction
Longhorned beetles of the insect family Cerambycidae are a highly diverse group of insects whose larvae bore into the stems of forbs and the wood and roots of trees, and the family contains numerous pests of agriculture, forestry, and structural timber. The reproductive biology of adult cerambycids …
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A Phenomenological Discussion about Floral Symbolisms, Olfaction & Music themes in Lived Experiences
This research initially seeks to establish elucidatory contexts that are fundamentally shaped by the persistent presence of flowers throughout the history of music. These observations serve as a foundational backdrop for deeper investigation into floral symbolism and its intricate connections to …
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Specific Roles of Kal-1 in Olfaction: A Model of Kallmann Syndrome in Drosophila
The X chromosome-linked form of Kallmann syndrome (KS) is caused by disruption of the Kal-1 gene, which encodes a secreted protein called Anosmin-1. The definitive features of the KS phenotype are anosmia and hypogonadism. Despite high conservation of the Kal-1 gene from invertebrates to …
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The tangled history of olfaction in African mole-rats, Bathyergidae: insights from Olfactory Receptor genes
This thesis reports the first assessment of OR variation in Bathyergidae, and therefore, the first for a family of subterranean mammals. Using a PCR-sequencing approach, 178 unique OR sequences, corresponding to 119 unique OR genes are characterised from 14 mole-rat species. Bathyergidae OR genes …
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The role of olfaction in host-finding by two specialist predators of hemlock woolly adelgid
… It seems unlikely that this species uses olfaction in long-range host location. We identified 10 monoterpenes that were consistently expressed in the hemlock volatile profile and were unable to isolate volatile emissions from HWA. There is an increased monoterpene release rate from …
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Regulation of Behavioral Plasticity: Mechanism Underlying Olfaction-Dependent Changes in Male Specific Courtship Behaviors in Drosophila melanogaster
… in gene expression and circuits neurophysiology. Olfaction, one of the most ancient modalities, regulates feeding and social behaviors such as courtship. It is intriguing how olfactory experience modifies animal behaviors. To study this question, we use the olfaction-driven male courtship in the …
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Regulation of Adult Neurogenesis by the ERK5 MAPK Signaling Pathway and its Functional Implications in Learning and Memory as well as Olfaction
… may play an important role in cognition and olfaction. Furthermore, increased neurogenesis has been observed after brain injuries such as stroke and DNA damage, promoting the idea that it may be advantageous to recruit endogenous neural stem cells to treat a variety of neurodegenerative …
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Totality of the circumstances: Factors affecting competence to waive Miranda rights.
Within the discipline of sociology human olfaction is rich with social significance yet remains a poorly charted frontier. Therefore, the following discourse is aimed toward the development of a foundation for the sociological study of olfaction. It is formed by the dual goals of unearthing the …
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Visual and olfactory recognition of familiar humans and elephants by African elephants
… familiar and non-familiar conspecifics through olfaction and human ethnic groups through vision and olfaction. We investigated whether elephants recognize individual familiar humans and elephants through vision and olfaction in two captive African elephants. After training, visual recognition …
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Age-related changes in taste and gustatory response and feeding behaviour in the stabled horse
… to the anatomy and physiology of gustation and olfaction in the horse. Moreover, whilst an age-related decline in gustation and olfaction has been recorded in humans, no such study has been conducted in the horse. The horse is reliant on gustation and olfaction to make appropriate decisions …
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