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 10 of 10 for “"microspectrophotometry"”.
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Chemometrics applied to the discrimination of synthetic fibers by microspectrophotometry
Microspectrophotometry is a quick, accurate, and reproducible method to compare colored fibers for forensic purposes. The use of chemometric techniques applied to spectroscopic data can provide valuable discriminatory information especially when looking at a complex dataset. Differentiating a group …
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Evaluating the Intra-variability and Inter-variability of Fibers in Cotton T-shirts using Microspectrophotometry
… and inter-garment comparison while utilizing Microspectrophotometry. Five different colors of cotton fibers were used: gold, kelly green, orange, red and royal. Ten t-shirts of each color were used in this study. Phase I of this study involved using the CRAICRTM QDI QDS II(TM) …
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Instrumental and Chemometric Analysis of Automotive Clear Coat Paints by Micro Laser Raman and UV Microspectrophotometry
… or characterized using Raman spectroscopy or microspectrophotometry (MSP), however some past research has been done using MSP. Chemometric methods are also not typically used for this characterization. In this study, Raman and MSP spectra were collected from the clear coats of 245 American and …
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Discrimination Of Automobile Carpet Fibers Using Multiple Analytical Techniques And The Subsequent Creation Of A Searchable Data
… light microscopy, fluorescence microscopy, microspectrophotometry, Fourier-transform infrared spectroscopy, microtomy (cross section analysis), dye extraction and liquid chromatography-mass spectrometry. Based on the information obtained from these techniques an overall discrimination of …
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Forensic Discrimination, Age Estimation, and Spectral Optimization For Trace Detection of Blood On Textile Substrates Using Infrared Spectroscopy and Chemometrics
… recovered from crime scenes. Both UV/visible microspectrophotometry and attenuated total reflectance (ATR) spectroscopy were used to analyze the fibers. PCA and LDA were employed to test the ability of providing additional discrimination between groups of fibers by calculating the first …
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Possum magic : exploring colour vision in the common brushtail possum (Trichosurus vulpecula)
… colour vision. By comparing behavioural and microspectrophotometry results, I conclude that SWS cones peak in sensitivity around 435 nm. This is the first non-macropod known to have a violet, rather than an ultraviolet visual pigment. This thesis confirms a diversity of both trichromatic and …
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Possum magic : exploring colour vision in the common brushtail possum (Trichosurus vulpecula)
… colour vision. By comparing behavioural and microspectrophotometry results, I conclude that SWS cones peak in sensitivity around 435 nm. This is the first non-macropod known to have a violet, rather than an ultraviolet visual pigment. This thesis confirms a diversity of both trichromatic and …
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The Genomics of Divergence and Adaptation in Sister Reef Fishes Separated by the Isthmus of Panamá
… changes in other key visual pathways. I use microspectrophotometry readings of visual sensitivity within the retina to compare overall shifts in visual sensitivity between species. I found parallel shifts in visual phenotype consistent with the different light environments and showed how …
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Forensic Application of Chemometric Analysis to Visible Absorption Spectra Collected from Dyed Textile Fibers
… from highly similarly colored textile fibers via microspectrophotometry (MSP). Several chemometric techniques were applied to spectral data and utilized to help discriminate fibers beyond the point where traditional methods of microscopical examination may fail. Because a dye's chemical structure …
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Uv-Visible Microscope Spectrophotometric Polarization And Dichroism With Increased Discrimination Power In Forensic Analysis
<p>Microanalysis of transfer (Trace) evidence is the application of a microscope and microscopical techniques for the collection, observation, documentation, examination, identification, and discrimination of micrometer sized particles or domains. Microscope spectrophotometry is the union of …