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 47 for “"MRE"”.
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Adjustable Frequency Bandgap for Seismic Vibration Isolation of MRE-Based Metamaterial Foundations
… is desirable. Magnetorheological Elastomer (MRE)-based metamaterial foundation can change Young’s modulus and stiffness by applying magnetic field intensity. Tunable material properties can shift the frequency band gap of the MRE-based metamaterial foundation. This research focuses on …
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Imaging the local mechanical properties of the brain with high-resolution magnetic resonance elastography
… progression. Magnetic resonance elastography (MRE) is a shear wave imaging technique that provides reliable, noninvasive estimates of tissue stiffness. MRE has been developed for many applications, and clinical practice has adopted MRE for the detection and staging of liver fibrosis. While the …
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Vibrational characteristics of brain magnetic resonance elastography
… of magnetic resonance elastography (MRE) of the brain. MRE is a promising, non-invasive methodology for the mapping of shear stiffness of the brain. A mechanical actuator shakes the brain and generates shear waves, which are then imaged with a special MRI sequence sensitive to …
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The socio-economic interactions of marine renewable energy development and the commercial fishing industry on the island of Ireland
… of energy such as marine renewable energy (MRE). For the purpose of this thesis, MRE refers to offshore wind, tidal and wave energy. The island of Ireland, comprising the Republic of Ireland and Northern Ireland, has a significant marine energy resource and policies are in place to maximise …
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Audit of the reporting adequacy of magnetic resonance enterograph performed in patients with Crohn's disease at Groote Schuur Hospital
… for the terminal ileum and the colon. MRE is the cornerstone imaging modality for evaluating and monitoring CD. This audit aims to assess the adequacy of radiology reports for MRE in CD patients, performed at GSH. Objectives: Determine the proportion reporting elements included in MRE …
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Does Marriage and Relationship Education Improve Couples' Communication? A Meta-Analytic Study
… effect of marriage and relationship education (MRE) on couples' communication, and accounted for various moderators of this effect, including method of assessment and unit of analysis. This study is part of a comprehensive meta-analysis of MRE evaluation research conducted since 1975 (k = 124 …
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Magnetic resonance elastography and nonlinear inversion problem in the aging brain
… biomarkers. Magnetic resonance elastography (MRE) is a non-invasive imaging technique created, and being developed, based on modeling of mechanical properties of biological tissue. For example, the combination of state-of-the-art MR imaging and finite element based nonlinear inversion (NLI) …
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Dynamic analysis of magnetorheological elastomer configured sandwich structures
… behaviour of magnetorheological elastomers (MREs) and smart sandwich structures. An extensive review, covering existing smart materials and their applications, has highlighted that smart materials and structures can be applied to large scale structures. Comprehensive experimental tests have …
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Using multibeam sonar to monitor animal behaviour and environmental interactions at marine renewable energy sites
Marine renewable energy (MRE) enjoys rising popularity and interest with governments, industry, academics and the public. The complex interplay of MRE device placement and subsequent changes to animal behaviour needs to be assessed to minimise potential impacts and allow stakeholders, regulators …
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Identification of Transversely Isotropic Material Properties from Cardiac Magnetic Resonance Elastography
… Although magnetic resonance elastography (MRE) has been used to estimate isotropic stiffness in the heart, myocardium has anisotropic material properties with greatest stiffness along the fibre direction. This thesis investigated two methods for determining global transversely isotropic …
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Molten Regolith Electrolysis reactor modeling and optimization of in-situ resource utilization systems
… technique, called Molten Regolith Electrolysis (MRE), in which molten lunar regolith is directly electrolyzed to produce oxygen gas and metals, such as iron and silicon. The MRE reactor model has a foundation of regolith material property models validated by data from Apollo samples and regolith …
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Evaluating Statistical Models for Baseline Characterization and Measuring Change in Environmental Monitoring Data
… and applied using Marine Renewable Energy (MRE); a case study of a disturbance with no best practice monitoring methods. The evaluation was performed on normal and non-normal acoustic metrics representative of MRE monitoring data. Evaluated models included: generalized regression models, …
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Entwicklung von Methoden zur Messung der Elastizität von Geweben mittels statischer und dynamischer Magnetresonanz-Elastographie
… und die dynamische Methode der MR-Elastographie (MRE) in Experimenten mit Agarose-Gel-Phantomen entwickelt und erprobt. Für Verhärtungen in elastischer Umgebung konnte mit der statischen MRE das Verhältnis zwischen den entsprechenden Elastizitätsmodulen gemessen werden. Die in Agarose-Gelen bei …
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Magnetic resonance elastography studies of human skeletal muscle
… known as Magnetic Resonance Elastography (MRE). MRE is a phase-contrast imaging technique that enables quantification of tissue mechanical properties by capturing the motion of induced shear waves via a synchronised Motion Encoding Gradient (MEG). The complex shear modulus is determined via …
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Application of magnetic resonance elastography to atherosclerosis
… of the plaque. Magnetic resonance elastography (MRE) images tissue elasticity by inverting, externally excited, harmonic wave displacement into a stiffness map, known as an elastogram. The aim of this thesis is to computationally and experimentally investigate the application of MRE to image the …
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Magnetic Resonance Elastography of the Brain: from Phantom to Mouse to Man
… is to develop magnetic resonance elastography: MRE) imaging to better understand brain deformation, brain tissue mechanical properties, and brain-skull interaction in vivo. The findings of this study provide parameters for numerical models of human head biomechanics, as well as data for …
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Creation of brain tissue-mimicking material and multi-material gradient 3D printer for magnetic resonance elastography phantom
Magnetic resonance elastography (MRE) is a non-invasive tissue imaging method that measures shear stiffness. While MRE has many benefits, it is not currently used clinically for scanning the human brain, mainly because it has not been validated with independent mechanical property testing methods. …
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Quantitative Magnetic Resonance Imaging For The Early Prediction of Treatment Response In Triple Negative Breast Cancer
… (DCE) MRI, and magnetic resonance elastography (MRE) were developed and applied as predictors of NAST response in the prospective trial cohort.</p> <p>First, aspects of the tumor necrosis on pretreatment diffusion MRI and DCE MRI were investigated as potential predictors of response. Our study …
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Mechanical Property and Phenotype Characterization of an in vitro Model for Afterload-triggered Cardiac Hypertrophy
… Thus, magnetorheological elastomers (MREs), which change their stiffness in response to magnetic fields, have been developed as a next-generation substrate for cardiac mechanobiology studies. In this thesis, I characterized how the mechanical properties of MRE vary with respect to …
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The Legal Regimes Governing Marine Renewable Energy in England and Wales
… within and between the span of legal genres that MRE evokes. Against a backdrop of climate change mitigation, the key findings show that despite the presence of political will for offshore renewable energies, MRE development faces a number of legal obstacles, all of which seek to protect other …
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