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 215 for “"Micrographs"”.
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Determining the Air Void Parameters of Concrete Using Digital Image Analysis of Polarized Light Micrographs
The ASTM C457 test has long been a standard used to obtain the air void parameters of concrete materials. These air void parameters provide valuable information that has been linked to the performance of concrete under conditions such as freezing and thawing cycles. The standard test procedure …
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A study of hair characteristics of forty-two species of South African Muridae and the taxonomic application of these characteristics as definitive criteria.
… of the hairs of each species, together with micrographs of gelatin imprints and scanning electron micrographs are presented. The taxonomic and practical uses of this method are discussed. It has been found that the cuticular scale pattern on hairs of South African Murid species studied shows …
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Shigella Boydii 18: Characterization and Biofilm Formation
… against S. boydii on parsley. Scanning electron micrographs and environmental scanning electron micrographs reveal the presence of cells in biofilms on the surface of parsley and cilantro treated with produce wash. In order to examine the mechanism of S. boydii biofilm formation transformants …
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A microscopic key to the hairs of Virginia land mammals
… scalation was presented. Conventional photomicrographs of the medulla, as well as scanning electron micrographs of the external scales, were included for each land mammal. The majority of Virginia's 75 land mammals could be identified to species.
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Prediction and control of residual stresses and distortion in HY-130 thick pipe weldments
… seam weld are presented in the form of photo-micrographs and electron scan micrographs. Temperature, strain, and radial distortion are measured at various locations or the HY-130 cylinder and the measured values are compared in tabular and graphic form with those values predicted by use of the …
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Taxonomia de porífera do Arquipélago de São Pedro e São Paulo, Brasil
… of living and preserved specimens, light micrographs of thick sections, scanning electron micrographs of microscleres, and camera lucida drawings of megascleres. Seventeen species were identified at species level and four at genus level; they represent 10 orders of two classes of Porifera …
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Microstructural analysis of plates with large strains as a result of central localised blast loading
… within the defonned plates were measured using micrographs of the grain structure of the plate. The aim of the thesis was to gain a fuller understanding of the internal defonnation of blast loaded plate so as to enable more accurate theoretical predictions of plate defonnation and tearing. The …
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Once upon a sheep : a SEM analysis of ovine patellar enthesis
… the anhydrously prepared samples. The electron micrographs generated from the anhydrously prepared samples are ambiguous with some of them showing the physiologically incorrect scenario of the tendon connecting directly to the trabecular bone. Due to failure in experimental setup and ambiguous …
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The improvement of the wear performance of the Ti-64 alloy using the oxygen boost diffusion treatment
… Modes of wear were evaluated using SEM micrographs and elemental analysis of worn surfaces and wear debris.
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The formation of contrast in scanning helium microscopy
… atom microscopy (NAM). SHeM produces helium atom micrographs by scanning the sample beneath a focused or collimated helium microprobe. As the technique is maturing, research efforts are moving on from the development of proof of concept instruments to the exploring of applications and optimising …
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Machine learning for understanding protein sequence and structure
… develop a deep denoising model for cryo-electron micrographs. By learning the denoising model from large amounts of real cryoEM data, we are able to capture the noise generation process and accurately denoise micrographs, improving the ability of experamentalists to examine and interpret their …
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Nondestructive evaluation of a high temperature ceramic matrix composite material
… sub-surface scanning acoustic microscope (SAM) micrographs indicated that the CMC specimens were experiencing surface changes. The increase in surface reflectivity of the specimens after heat treatment was attributed to density and elastic property changes related to oxidation of the matrix, …
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Crystallization of Isolated Amorphous Zones in Semiconductors
… zones throughout a series of irradiation micrographs. Characteristic zone shrinkage behaviors were observed. A simple shrinkage model suggests that the defects responsible for regrowth are created very near the crystalline/amorphous interface. In the sub-threshold electron energy regime, …
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The isolation and characterization of common lambsquarters cuticles and the effect neodol surfactants on the penetration of bentazon and glyphosate
… isolated by the leaf miner technique. Electron micrographs verified the successful isolation of leaf cuticles, which include epidermal cells, without structural alterations of the adaxial and abaxial surfaces. Penetration of bentazon through isolated cuticles was monitored using a cuticle …
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Machine Learning Techniques for Augmenting Hematological Malignancy Diagnosis
… data, including morphologic images, cytogenetic micrographs, molecular sequencing data, and high-dimensional multicolor flow cytometry (MFC). This dissertation explores the various strategies and advantages of using ML to augment this workflow, with a focus on automated screening for clinically …
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Evolution Of Lamellar Structures In Al-ag Alloys
… dark-field scanning transmission electron micrographs of Ag2Al plates inclined to the electron beam. Results from these measurements are in good agreement with direct bright-field micrographs of plates viewed edge-on.
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Learning image segmentation and hierarchies by learning ultrametric distances
… neural networks from densely stained 3d electron micrographs of brain tissue. The computer science contribution is a new machine learning method for image segmentation and the development of a new theory for supervised hierarchy learning based on ultrametric distance functions. It is well-known …
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Distinguishing the Treefrogs "Hyla versicolor" and "Hyla chrysoscelis" in Iowa, and Their Distributions
… nucleoli and measurement of scanning electron micrographs of toepad projections. The resulting distribution correlates with spot checks of call analysis. Subsequent morphometric data confirm that the two species represent two distinct populations in Iowa. "H. chrysoscelis" is distributed …
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Acf7 is a Hair-Bundle Antecedent, Positioned to Integrate Cuticular Plate Actin and Somatic Tubulin
… networks in hair cells. In addition, electron micrographs demonstrate microtubules inserting into the cuticular plate, the ends of which are decorated with proteins that directly link to the F-actin of the cuticular plate. ACF7, which possesses both actin and microtubule binding domains, is a …
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