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 41 for “"microCT"”.
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Use of MicroCT to determine the functional ecology of intertidal infauna
Intertidal infauna through the process of bioturbation, play a major role in estuarine ecosystem functioning. Despite this, methods to both quantitatively and qualitatively assess the features produced from bioturbation have been limited. This study builds upon the recently developed technique by …
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ASSESSMENT OF PERI-IMPLANT BONE MICROARCHITECTURE IN D4 BONE: AN EX VIVO MICROCT ANALYSIS
Objective: This study aimed to evaluate the impact of different implant designs on primary stability, peak insertion torque (PIT), implant stability quotient (ISQ), and peri-implant bone microarchitecture in low-density bone (D4). The investigation focused on three Straumann implant systems: Bone …
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Contributions to the taxonomy of South African hermit crabs (Crustacea: Decapoda: Paguroidea) – integrating microCT scanning and barcoding
Hermit crabs form an important component of the marine benthos and globally more than 1,200 species have been described. In the unique bioregion of South Africa, hermit crabs are poorly known, and the last taxonomic revision of the group was that of K. H. Barnard in 1950, who recorded only 32 …
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Desarrollo de un método predictivo mediante TC para estudiar la evolución de los tejidos periimplantarios tras la colocación de implantes dentales en un modelo experimental.
… mediante microtomografía compuerizada (microCT) permite evaluar la remodelación de hueso crestal y la cantidad de tejido neoformado pe-riimplantario. Por tanto, cada vez presenta más importancia en la práctica clínica y toma de decisiones por profesionales en odontología. Siendo el mejor …
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Microstructural investigation of tablet compaction and tablet pharmacological properties
… A series of X-ray micro computed tomography (microCT) characterization methods were developed to untangle material interactions during tablet manufacturing process, leading to an interpretation of tablet compaction mechanisms through 3-D representation of microstructural features. Numerical …
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Particulate composite material internal deformation measurements using x-ray microtomography and digital volume correlation
… In the past, X-ray microtomography (X-ray microCT) has been used to study the internal structure of such complex microstructures. The combination of the Digital Volume Correlation (DVC) method and the three-dimensional (3D) imaging X-ray microCT technique is becoming a powerful tool in the …
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Debonding and adhesive remnant cleanup: an in vitro comparison of bond quality, adhesive remnant cleanup, and orthodontic acceptance of a flash-free product
… interface using micro-computed tomography (microCT), the amount of adhesive remaining on the tooth surface after bracket debonding, the time required for adhesive remnant cleanup, and clinical practitioners' preference between the new flash-free and a conventional adhesive. Materials and …
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Chromatophore tissue density and skeletal density banding as a measure of the adaptive response of healthy corals to environmental change
… and computed tomography x-ray diffraction (MicroCT) analysis of the ecological cornerstone coral Montastrea faveolata has been completed on the reef tract of the southern Caribbean island of Curaçao across a 1-20 m bathymetric transect of increasing water depth (WD) and decreasing …
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A Comparison of Limb Development of the Salamanders Plethodon Cinereus and Ambystoma Mexicanum
… mexicanum are compared. Using histology and microCT on embryonic and juvenile specimens, there are few observable differences in the relative order of skeletal element appearance, and both species exhibit preaxial polarity. The resolution with which elements’ appearance could be examined was …
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Put Your Back Into It: A Structural and Mechanical Characterization of Iliac Crest and Cervical Spine Autograft for ACDF Surgeries
… organization using micro-computed tomography (microCT) and second-harmonic generation (SHG) imaging modalities, respectively. A pre-clinical large animal model was used to characterize the mechanical and material properties of lumbar spine tissue, under similar physiological loading as the …
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Multiscale Characterisation of Ice and Collagen: Physicochemical Development of Lyophilised Scaffolds for Tissue Engineering
… protocol for X-ray micro-computed tomography (MicroCT) data acquisition was devised, giving rise to a novel segmented percolation method to characterise interconnectivity. Analysis of artificial and real MicroCT datasets revealed that 3 μm was an ideal pixel size to image porous structures for …
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Effects of Chemotherapy on Bone Mineral Density in a Post-Mortem Context
… and first lumbar vertebra were scanned using microCT technology and the images were processed to determine bone mineral density, trabecular thickness, and cortical thickness for each element. There is no statistically significant difference between the trabecular and cortical thickness between …
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Predicting peak load of the femoral neck using structural parameters
… femur. Structural measurements were taken from microCT images of ten murine right femurs at ten locations along the femoral neck. These specimens were then tested to failure. The major diameter, minor diameter, cortical thickness, cross sectional area, cortical area, and cortical fraction were …
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Diagnostic Accuracy and Reproducibility of Conventional and Novel Caries Detection Methods as Determined by Histology and Micro-CT; A Study<i> In Vitro</i>
… between histological sections and corresponding MicroCT tomographic slices, for the assessment of the presence and extent of dental caries on<br/>both the occlusal and proximal surfaces in permanent premolar and molar teeth.<br/>3. To evaluate the diagnostic accuracy of the caries detection …
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Design and characterization of catalysts and electrodes for electrochemical energy conversion applications
… thesis employs X-ray micro-computed tomography (MicroCT) to visualize the architecture and buried interfaces of fuel cell electrodes in a non-destructive fashion. By coupling MicroCT-based visualization with microfluidic-based electrochemical characterization, variation in catalyst layer …
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One tick closer to a better understanding of tick physiology and how to incorporate tick biology in a classroom
… 2, I discuss a micro-computed tomography (MicroCT) scanning procedure I developed for examining the embryogenesis of the black-legged tick and document the full embryogenesis of I. scapularis. The development of the MicroCT scanning procedure consisted of a qualitative comparison of MicroCT …
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The effect of mechanical loading on bone during growth
… longitudinal growth in bone with rats, in vivo microCT scans and gait experiments were performed until 93\% of skeletal maturity (n=5, age 8–20 weeks). Cross-sectional properties and tissue density were measured at three different regions (diaphysis, distal and proximal regions of the tibia) and …
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Microfluidic encapsulation of carbon capture materials
… coupled with micro-computed tomography (microCT) were used to characterize their size and uniformity. These microcapsules had mean diameter of approximately 470 µm +/- 10 µm with highly uniform shell thicknesses of 30-40 µm. Gas permeability measurements revealed that this silicone-based …
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Discovering the Complex Aerodynamics of Flapping Flight with Bio-kinematics Using Boltzmann and Eulerian Methods
… acquired by the author, scanned using a skyscan microCT scanner, and post-processed for computational analysis. The resulting geometry captures the naturally occurring vein structures present in the bee wing and is used to better understand aerodynamic effects of biological corrugation. The …
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Compact tomographic X-ray phase-contrast imaging of breast cancer
… the same features imaged using commercial microCT are obscured by noise. Overall, the methods developed in this thesis provide a proof of concept for conducting tomographic XPCI outside of synchrotron facilities, thus paving the way towards future clinical implementation.
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