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 114 for “"SEM analysis"”.
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Once upon a sheep : a SEM analysis of ovine patellar enthesis
… One set of samples was prepared for study via SEM using aqueous solvents whereas the other set was prepared using anhydrous solvents with the intention of comparing the mineral phases present between the two sets of samples. The fibrous material observed in the set of samples prepared using …
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Nanoparticle Superlattice Processing: Monodispersed Building-Blocks & Single Crystal Films
… approach enables the precise organization and assembly of NCT units into macroscopic materials. By adjusting nanoparticle core sizes, polymer brush lengths, and molecular recognition groups, NCTs can be tailored to produce superlattices with controlled crystalline structures, lattice spacing, and …
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Microstructural effects on capacity-rate performance of vanadium oxide cathodes in lithium-ion batteries
… and grain size distribution were determined in SEM analysis. No significant difference was observed in capacity rate behavior with changes in microstructure. However, it is speculated that further in situ analysis may show different relative diffusion rates into grains of differing sizes is …
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Identifying Dysfunction in Persistent Social Deviance: Perspective Taking as a Mediator of the Relationship Between Psychopathy and Social Aggression
… this relationship. Structural equation modeling (SEM) was used to assess perspective taking as a potential partial mediator of the relationship between psychopathy and social aggression in a sample of 439 undergraduates. Although bivariate correlations produced the expected negative relationships …
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Assessing Nutrition as a Mediator between Oral and General Health
… were the control variables. For mediation analysis Baron and Kenny’s mediation analysis was initially performed, followed by Sobel’s test. Lastly bootstrapping for standard-error and Structural Equation Modelling (SEM) were conducted to assess the consistency of the mediation model. Result: …
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Sustainability, Empowerment, and Resident Attitudes toward Tourism: Developing and Testing the Resident Empowerment through Tourism Scale (RETS)
… sub-scales were tested in a Confirmatory Factor Analysis (CFA), which demonstrated them to be construct valid based upon tests of convergent, discriminant, and nomological validity. These scales were subsequently included as antecedents to residents' perceptions of tourism's impacts, as well as …
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An examination of proposed risk factors in bulimic symptomatology among college women
… explored through Structural Equation Modeling (SEM) analysis. A sample consisting of 200 female undergraduate students completed the following measures: The Multidimensional Perfectionism Scale (MPS), The Beck Depression Inventory-II (BDI-II), the Toronto Alexithymia Scale (TAS-20), and the …
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Unique Preservation of Fossil Ghost Fish in the Green River Formation
… content were recorded at each quarry location. Analysis included XRD, stable isotope, XRF, TOC, and SEM analysis. Results were inputted into tables, graphs, and spatial maps to show trends, interpret the paleoenvironment, and examine the unique preservation. Interpretation of the results …
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Biologically reinforced geopolymer composites
… being treated to 300°C. Weibull statistical analysis was used to better understand the range of flexural strengths within different sample groups. Finally, SEM analysis was employed to characterize fracture surfaces and mode of failure in the different sample sets.
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The Effects of IS-BAO Implementation and Leadership Performance on Safety Culture in Business Aviation Flight Operations
… validity. Structural equation model (SEM) analysis determined the relationship between safety culture perceptions and IS-BAO progression was not significant (R = -.026, <em>p </em>= .933). SEM analysis was also used to examine the relationship between safety culture perceptions and …
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The Cell Wall Integrity-Associated Map Kinase Homolog, AbSlt2 in the Necrotrophic fungus Alternaria brassicicola is Required for Pathogenicity of Brassicas
… type. Furthermore, scanning electron microscopy (SEM) analysis revealed the abslt2 mutants showed decreased penetration ability, underdeveloped appresoria, and altered morphology on the leaf surface of the host plant, Brassica oleracea (cabbage) when compared to wild type. Abslt2 mutant hyphae …
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Reducing powder bed layer defects in slurry-based three dimensional printing
… maximum variation of 11 microns peak to valley. SEM analysis of cross-sections revealed that internal defects between deposited lines, previously seen with nozzle rastering, had been eliminated. Micro-bubbles along the interface between layers persisted, however. Follow-up SEM analysis of a 5 …
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Behavior of triplex silicon carbide fuel cladding designs tested under simulated PWR conditions
… not as strong as reported in a previous study. SEM analysis was able to follow the propagation of cracks from initiation, at the monolith inner surface, to termination, upon breaching the EBC. The composite layer was found to be key in dissipating the energy driving the crack formation. Second, …
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Employability of the Graduates From 14 CFR PART 147 Schools: Understanding the Critical Factors Using Covariance-Based SEM
… were used in the model. The first step of the analysis was to complete a confirmatory factor analysis in AMOS. The factors used in the model for the first question were the top four from the Q-sort results: technical skills, problem solving, reliability, and teamwork. The model fit was …
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The mechanical properties of tightly woven carbon-carbon composites
… correlated with Scanning Electron Microscopy (SEM) analysis to explain observed fatigue mechanisms. Evidence of textural changes related to fatigue was observed in the matrix region of these composites--Abstract, p. III</p>
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Characterization of electrospun DLPLGA nanofibers for a drug delivery system for intracranial tumors and AVMs
… and analyzed for drug characterization. The SEM analysis showed that fiber diameter is not a function of drug presence. The IGA graphs showed little variation in mass loss in comparing the electrospun fiber to the drug combined fiber. The DSC analysis provided a Tg value around 48-53 degrees …
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Managing Someone 'Less like You' From Afar: The Role of Virtual Communication Modality
… The results of the Structural Equation Modeling (SEM) analysis showed that while trust fully mediates the positive relationship between perceived similarity and LMX quality, the computer-mediated communication modality does not moderate this fully mediated relationship. The findings of this study …
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An investigation of friction and wear mechanisms in selected thermoplastics
… developed from Scanning Electron Microscope (SEM) observations of abrasive wear of a polymer disk sliding against metal asperity models. The investigator was unable to observe actual particle formation but did identify elastic and plastic deformation of the polymer, and a debris buildup and …
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Antecedents of mobile banking applications acceptance and usage and its consequence on financial behavior in Namibia
… tested. Structural equation modeling (SEM) analysis revealed that effort expectancy, habit, and trust positively influence consumer intention to accept mobile banking applications and trust negatively influences perceived risk, while habit and behavioral intention positively influence …
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Green synthesis of silver nanoparticles using Moringa oleifera extracts and their evaluation against antibiotic resistant strains of escherichia coli and staphylococcus aureus
… (FTIR) and scanning electron microscopy (SEM). Disc diffusion method was used for initial screening of antibacterial activities and their minimum inhibitory concentration (MIC) was determined. Formation of AgNPs was confirmed by colour change from pale yellow to dark brown-black. UV-vis …
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