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.
Results
Showing 1 to 20 of 216 for “"external stimuli"”.
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Engineering Functional Defects in Oxides Using External Stimuli
… I have utilized and explained the effects of external stimuli, specifically with lattice strain, oxygen chemical potential, chemical doping, and ion irradiation, in tailoring the concentration and stability of these critical defects in oxides to boost their functionalities. The findings and …
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Active Response of Polymer Materials from External Stimuli – Solvents and Light; Grafting Reactions on Perovskite Layers
… show dynamic behaviors when exposed to different stimuli.</p> <p>Solvent mediated fluxional behavior of polymer thin films involved extensive, rapid curling both on infusion and evaporation of good solvents. These films can be either lab-fabricated ones or commercial ones, and the curling behavior …
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Thermal conductivity switching of polymers and lithium-ion battery electrode materials in response to external stimuli
… control thermal conductivity of materials using external stimuli, many have failed to show a high and fast thermal property switching of material. In this dissertation, I present novel stimuli-responsive polymers and Li-ion battery electrode materials that involve a wide range of thermal …
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A Parametric Study on the Effects of External Stimuli on the Aqueous Dissolution of Lithium Disilicate Glass
… research conducted on the effects of additional stimuli on the dissolution of glass. For this research lithium disilicate was leached in deionized water at multiple temperatures while microwave radiation, ultrasonication or flow conditions were also applied to the system. These results were then …
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Transcriptional Regulation of Adult Neurogenesis by NRSF/REST and NeuroD1
… by multiple pathways and is sensitive to many external stimuli. Two critical regulatory factors in this process are NRSF/REST and NeuroD1. NRSF/REST, a transcriptional repressor that binds a specific NRSE site and recruits corepressors and chromatin remodeling machinery to repress its target …
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Methodological investigations into design inspiration and fixation experiments
… However, many studies have reported that external stimuli may constrain designers’ imagination and limit their exploration to similar solutions, a phenomenon described as design fixation. Inspiration and fixation effects are traditionally studied with a similar experimental paradigm, which …
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Signal Transduction Mechanisms Of Pas And Hamp Domains
… modules that coordinate cellular metabolism with external stimuli. A subset of PAS domains directly sense external stimuli, through an associated cofactor or ligand, and regulate the activity of an attached effector domain. In contrast, HAMP domains do not sense external stimuli and serve as …
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Experimental and analytical techniques for studying mechanotransduction in articular cartilage
… cells coordinate responses to internal and external stimuli. To fully understand cell function in such environments, it is critical to connect the behavior of individual cells with the full tissue-scale response. Articular cartilage is one such system where the complex extracellular matrix …
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DYNAMIC FUNCTIONAL CONNECTIVITY NETWORKS: NEW ANALYSIS AND INTERPRETATION STRATEGIES
… recognize, integrate and respond to internal and external stimuli across multiple time scales. Thus, investigating dynamic brain network connectivity may provide greater insight into understanding fundamental properties of brain networks. This project takes three approaches to studying dynamic …
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The Effect of Post-Injury Exercise Training on Skeletal Muscle Mitochondria
… ↔ IIx/IIb ↔IIb) which can change phenotypes via external stimuli such as chronic exercise training. The various fibre types differ across characteristics such as shortening velocity, fatigue resistance, and mitochondrial content that provide skeletal muscle the ability to meet different …
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Optimal Control of Weakly Forced Nonlinear Oscillators
… systems. Control of neural oscillations by external stimuli has a broad range of applications, ranging from oscillatory neurocomputers to deep brain stimulation for Parkinson's disease. In this dissertation, we investigate fundamental limits on how neuron spiking behavior can be altered by …
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Dynamics Of Orientable Particulate Suspensions: Continuum Simulations Of ‘Living’ Fluids And Meso-Scale Simulations Of Anisotropic Particle Suspensions
… fluids' contain living cells that can respond to external stimuli such as light; and passive fluids contain anisotropic particles whose size is small enough that non-continuum effect caused by solvent needs to be accounted for. In the first part, instability caused by hydrodynamic interaction …
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Exonerating Manuel I Komnenos: Byzantine Foreign Policy (1143-1180)
… strategy, and that Byzantium simply reacted to external stimuli. The most ambitious aim of this thesis is to present a cogent analysis of Manuel's imperial policy to demonstrate the emperor's efficacy and strategic flexibility. The perception, generally accepted by historians, that Manuel left …
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Design of a tricycle chassis using computer-aided design and finite element analysis
… modeling complex systems and their responses to external stimuli. This paper explores how these techniques were employed in a highly iterative design process to improve the rear chassis of a pedal-powered tricycle. The tricycle, which is used in Lagos, Nigeria to collect and transport waste …
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Artificial Transmembrane Signalling
… recognising and responding to different external stimuli, and membrane-spanning proteins play a vital role in these signalling pathways. A large number of examples of synthetic membrane channels and transporters have been reported in the past four decades. However, signal transduction …
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Quantitative sensory testing for evaluation chronic arthritis or local anesthesia
… sensory systems are crucial in perception of external stimuli. Different modalities such as touch, temperature, and pain can only be appreciated with intact sensory pathways from the peripheral receptors to the cerebral cortex via the spinal cord. Pain is a sensory response to noxious, tissue …
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Temperature and Water Responsive Shape Memory Polymers for Soft Tissue Expansion
… original shape when brought in contact with external stimuli (temperature and water). This is based on the transition of these polymers from the glassy to the rubbery state above their glass transition temperatures. This work demonstrates the potential of use of these polymers in different …
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Modelling of Berry phase and Fermi-level topologies for emergent quantum phenomena prediction in selected solid state systems
… compounds - SrSi2, CoSi, and NbP - to reveal how external stimuli, namely tensile strain and electric fields, tune their electronic bands and topological traits. By combining first-principles calculations with model Hamiltonian experiments, we aim to uncover mechanisms behind quantum phase …
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Analysis framework for adaptive spiking neural networks
… for learning is in its ability to represent external stimuli symbolically in an associative memory. Historically, statistical methods such as the hidden Markov model have been used in order to provide the internal symbolic representation to external signals from the environment. This work …
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THE INTERPLAY BETWEEN ETHYLENE SIGNALING AND FLAVONOL ANTIOXIDANTS IN MODULATING STOMATAL MOVEMENT AND ROOT ARCHITECTURE
… are continuously exposed to a diverse array of external stimuli, threatening their ability to survive, grow, and reproduce. To cope with fluctuating environments, plant growth and development are regulated by elegant internal signaling pathways that connect external cues with growth response. …
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