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 12 of 12 for “"Diffusion Characteristics"”.
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A stochastic tractography system and applications
… associated with neuroanatomical abnormalities. Diffusion Tensor Imaging (DTI) and stochastic tractography allow us to investigate white matter architecture non-invasively through measurements of water self diffusion throughout the brain. Many comparative studies of white matter architecture …
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Design and construction of instruments for exciton diffusion characterization and for patterning of thin films
… devices. One instrument characterizes exciton diffusion and the other patterns organic thin films. Exciton diffusion characteristics are important to study in organic materials because excitons mediate the transport of energy. In this work, a fluorescence microscope is designed and built in …
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EXPLORING HETEROSTRUCTURED UPCONVERSION NANOPARTICLES: FROM RATIONAL PARTICLE ENGINEERING TO BIOMEDICAL APPLICATIONS
… nanomotors were designed, which has better diffusion characteristics throughout the solid tumor and delivers an enhanced near-infrared triggered PDT.
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Diffusion characterization of antimony-based type-II superlattices using electron beam induced current and time-resolved photoluminescence
… of antimony and gallium affect on the diffusion characteristics of this materials.
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Effect of Nonequilibrium Defects Due to Phase Transformation on Diffusion in Beta Zirconium
… phase transformation on the anomalous diffusion characteristics of bcc zirconium has been investigated in this study. ('113)Sn and ('59)Fe tracers were used to typify the diffusing nature of self- and fast-diffusing atoms. A differential measurement of diffusion in two samples was …
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Monitoring brain neurochemistry after brain trauma
… a new brain tissue model by characterising the diffusion characteristics of gadolinium-DTPA, thereby supporting its application in subsequent neuro-pharmacokinetic research involving human subjects. This research advances the field by expanding the capabilities of existing technologies for …
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Spectral-domain optical coherence phase microscopy for quantitative biological studies
… cancer cells, and observed the modification in diffusion characteristics inside the cells. Based on the optical sectioning capability of SD-OCPM, quantitative phase imaging was performed to examine slow dynamics of living cells. Through time-lapsed imaging and spectral analysis on the dynamics …
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Development of low-clinker concrete: partial replacement of cement with calcined clay and limestone, based on selected African raw materials
… development, durability indexes, chloride diffusion characteristics, electrical resistivity, carbonation resistance, shrinkage, and potential for early age cracking. Overall, it can be concluded that the selected LC3 concrete mixes perform similarly or better than the reference mixes. The …
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Dynamics of implementation of mitigating measures to reduce CO₂ emissions from commercial aviation
… long time-constants. This research analyzed the diffusion characteristics of a portfolio of CO₂ emission mitigating measures and their relative contribution to cumulative system wide improvements. A literature review identified 41 unique measures, including (1) technological improvements, (2) …
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Building trust in mobile commerce: a technical report presented to the Department of Information Systems, University of Cape Town
… of mobile technologies, namely Innovation Diffusion characteristics. Two research approaches were followed. Since m-commerce is relatively new in South Africa, qualitative analysis, by using focus groups, was conducted to explore how and why trust and risk influence m-commen::e adoption. …
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Environmental Monitoring - using diode-laser-based spectroscopic techniques
… spectrum is needed. The method was tested in diffusion related measurements. A novel technique for analysis of free gas in scattering media by use of absorption spectroscopy, GASMAS, was introduced. The sharp absorption features of the gas, contrasted to the very slow wavelength dependence of …
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Characterization of, and novel architectures for, strained-layer superlattice infrared photodetectors
… current (EBIC) measurements, used to study the diffusion characteristics of InGaAs/InAsSb superlattices. By measuring the current generated by the electron beam of a scanning electron microscope (SEM), EBIC allows us to extract the minority carrier diffusion length (L) and the surface …