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 27 for “"microcomputed tomography"”.
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The Green Lane Valve: a Novel Decellularised Heart Valve
… imaging technique was developed using microcomputed tomography. The concentration-dependent effects of detergent-use were then assessed. Along with histological, immunohistochemical, and biomechanical analyses, the subcutaneous rat model and microcomputed tomography imaging methodology …
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Microstructure and micromechanics of the sea urchin, Colobocentrotus atratus
… model. With the high resolution scans from X-ray microcomputed tomography at the Advanced Photon Source at Argonne National Laboratory, Beamline 2BM, visualization and characterization of a complex porous network in three-dimensions was possible, providing a more quantitative insight into the …
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Bone Characterization of Dicer Deficient Transgenic Mice Under Dmp1 Promoter
… and their controls were characterized using microcomputed tomography, shape analysis and H&E histological sections. A total of 75 transgenic mice consisting of DicerKO, Dicer flox, and DMP1cre groups were studied. The animals were sacrificed at 4 and 8 weeks old. Loss of Dicer in early-stage …
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Anatomic investigation of the roots of second mandibular molars using micro CT.
… Detailed images of tooth anatomy using microcomputed tomography allow measurements of pulpal floor anatomy, canal configurations, canal dinemsions, root wall thickness, presence of calcifications, and apical anatomy. The aim of this study of eighteen mandibular second molars using micro …
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Thermoneutral Housing Did Not Impact the Combined Effects of External Loading and Raloxifene on Bone Morphology and Mechanical Properties in Growing Female Mice
… 6 weeks. We investigated bone morphology through microcomputed tomography (µCT) and mechanical properties via four-point bending and fracture toughness testing. Results indicated a combined improvement by external loading and raloxifene on geometry, particularly in the cancellous region of the …
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Exploring the possibility of low temperature glazing in faience from the Djoser Step Pyramid through compositional analysis
… dispersive spectroscopy, x-ray diffraction and microcomputed tomography. It appears that the tile was glazed by the method of "application." There is evidence that may support hypotheses of low temperature glazing, though the phosphorus content of the faience core and of the glaze does not fully …
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The Biomechanics of Tracheal Compression in the Darkling Beetle, Zophobas morio
… the hemocoel and imaging using synchrotron microcomputed tomography (SR-µCT), we reconstructed the tracheal system in its compressed state. While previous studies used 2-D x-ray images to examine collapse morphology, ours is the first to quantify collapse patterns in 3-D and compare with …
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MICRO-CT EVALUATION OF MSC/HUVEC/HSC-MEDIATED ANGIOGENESIS IN LARGE PCL-ßTCP CONSTRUCTS IMPLANTED IN NUDE MICE
… demineralized and analyzed for neovasculature by microcomputed tomography (micro- CT). The formation of microvasculature was significantly higher in the MSC-HUVEC and MSC-HSC constructs than those seeded with MSC alone or cell-free constructs. Volumetric analysis showed that MSC-HUVEC constructs …
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Bone Properties of Recombinant Inbred Line - BXD Mouse
… of different compartments. In this study, microcomputed tomography (µCT) provided an accurate measurement on characterizing bone quality and bone architecture ex-vivo; three-point bending provided a measurement on characterizing genetic-influence based bone structural response.</p> <p>51 …
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Composition and Manufacturing Effects on Electrical Properties of Li/FeS2 Thermal Battery Cathodes
… of cathode microstructures generated from microcomputed tomography reconstructions. Results from the SIERRA/Aria finite element code indicate that the selected processing and composition parameters do not provide a clear trend on the preslumped electrical conductivity, but density slightly …
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The Ability of Bone Mineral Density and Microstructural Indices to Reflect Mechanical Properties of Trabecular Bone
… using PIXImus2 densitometer. A high-resolution microcomputed tomography (micro-CT) was used to scan each specimen to obtain histomorphology. Microstructural parameters such as bone volume fraction (BV/TV), trabecular number (Tb.Th), trabecular separation (Tb.Sp) were directly calculated from the …
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Analysis of soil compaction and furrow depth from planter row unit
… into two parts. The first part uses X-ray microcomputed tomography (CT) to scan undisturbed soil cores to study soil compaction caused by the tractor and planter row unit soil-engaging components. This technique quantifies soil porosity and compaction by calculating the core's mean …
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Crack Self-Healing in Alkali-Activated Materials: From Mechanisms to Strategies for Enhancing the Healing Efficiency
… emission spectroscopy (ICP-OES), and X-ray microcomputed tomography (μCT). Crack self-healing products were characterized using scanning electron microscopy with energy dispersive X-ray (SEM-EDS) analysis and Raman spectroscopy. Ultimately, a chemistry-informed machine learning model was …
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Developing an Inducible Osteoclast System as a Cell Therapy for Ectopic Calcification
… to induce formation of an HO lesion. Using microcomputed tomography to quantify the volume of the HO over time, we found that in mice treated with RAW264.7+iRANK cells, there was a significant decrease in HO volume compared to baseline over a two week period, whereas in mice which did not …
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DYRK1A-Related Trabecular Defects in Male Ts65Dn Mice Emerge During a Critical Developmental Window
… of age (P12-42) were measured and analyzed by microcomputed tomography (μCT). Cortical defects were present generally throughout development, but trabecular defects emerged at P30 and persisted until P42. The gene Dual-specificity tyrosine-regulated kinase 1a (Dyrk1a) is triplicated in both DS …
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Fractal Analysis to Detect Surface Roughness Changes After Fatique Loading in the Canine Mandibular Incisor - A Pilot Study
… if not impossible. Recent advances in computed tomography are allowing researchers to evaluate changes in the skeleton, including dental movements in three dimensions. CT reconstructions could be used to evaluate the changes in tooth composition through the volumetric data obtained. Fractal …
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Crack-resistant and self-healing cut-off wall materials incorporating polymers and minerals
… provided by the microcapsules. X-ray microcomputed tomography and scanning electron microscopy were innovatively applied to investigate the self-healing process and mechanism. The microstructural analyses confirm the survivability, uniform dispersion, and crack-triggered rupture of the …
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Osseointegration of a Cementless Total Knee Arthroplasty in a Murine Model of Glucocorticoid Induced Osteoporosis
… tibiae and femora were collected for microcomputed tomography (mCT) to measure normal bone architecture and bone mineral density (BMD).</p> <p>Results: Placebo treated mice had a better overall osseointegration score than the GC treated mice. However, pull-out testing showed no …
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Fundamental Behavior of Nanoporous Networks in the Out-of-Autoclave Manufacturing of Carbon Fiber Reinforced Polymer Composites
… of NPNs, in situ experiments utilizing microcomputed tomography are developed to investigate the (presumed Newtonian) flow of resin throughout the NPN as a function of temperature, which varies throughout a typical manufacturer recommended cure cycle (MRCC), along with the void evolution …
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Fabrication and Characterization of Horizontally Aligned Carbon Nanotube Thermoplastic Bulk Nanocomposite Laminates
… solution. Through characterization via X-ray microcomputed tomography (µCT), scanning electron micrography (SEM), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, and polarized Raman spectroscopy, HA-CNT/PMMA laminates were shown to be free of micro-scale voids …
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