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 461 for “"NIR"”.
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NIR technologies for high speed fruit grading
… practical grading of fruit, the second with the NIR light penetration and distribution within a fruit. A ‘rotary grader’ has been built to enable the rapid, non-destructive assessment of fruit. Up to twenty fruit can be placed on a rotating disk, which can be spun at a controlled speed or moved …
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NIR light transmission through skin and muscle
… The objective of this thesis is to determine the NIR light transmission through different thicknesses of animal tissue and its spatial spread due to the scattering effect. Primarily pork skin and muscle tissues are used due to their similar optical properties to human tissue. Tissue thicknesses …
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Spectroscopic investigation of phytochromes and NIR fluorescent variants
… excitation in combination with a pre-resonant NIR measuring laser and the photochemical back-conversion of the sample in a reservoir. This is necessary to ensure that the dark-adapted state is the starting point for repetitive experiments. Using this technique, it was shown that the decay of …
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NIR hyperspectral imaging for animal feed ingredient applications
… industry, near-infrared hyperspectral imaging (NIR HSI) was explored for animal feed applications. Its ability to provide chemical composition of the sample at the pixel level provides an advantage over the typical NIR spectroscopy. In this dissertation, a literature review was presented that …
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Geographic classification of wines using Vis-NIR spectroscopy
… Visible and near infrared spectroscopy (Vis-NIR) is recognized as a rapid and non-destructive technique. In recent years, several studies have been conducted using Vis-NIR spectroscopy to analyze wine for both quantitative and qualitative purposes. The aim of this research was to investigate …
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RGB and NIR Image Registration for Proximal Multiband Imaging
… on red-green-blue (RGB) and near-infrared (NIR) imagery has become an essential tool in high-throughput plant phenotyping. However, accurate analysis requires precise alignment between the images captured using these different modalities. This alignment process is known as image …
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NIR silicon photodetector enhancement using photonic crystal cavity resonators
The growing demand for efficient infrared sensors for light ranging, thermal-cameras, and soon, free-space optical communications has yet to be answered. In this study, we use polycrystalline silicon in conjunction with a photonic crystal cavity (PhCC) to enhance light absorption for efficient …
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Temperature elevations due to NIR exposure in the brain tissue
Near infrared (NIR) lasers have been used in medical applications both for diagnostic and therapeutic purposes. Temperature elevation profile inside the tissue is a critical factor that needs to be better understood in these applications. The purpose of this study is to determine the temperature …
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Deep NIR imaging of galaxy clusters in the Vela supercluster
… the shorter optical wavelengths, near infrared (NIR) observations are less affected by dust obscuration in the ZoA and therewith offer a better tool to probe galaxy clusters in the VSCL, and get a better understanding of this extended supercluster. A series of deep NIR observations of prospective …
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Myoglobin redox form stabilization: role of metabolic intermediates and NIR detection
… of myoglobin redox forms using near infrared (NIR) spectroscopy. In experiment 1, we investigated the relationship between metmyoglobin (MMb) reduction and oxidation of malate to α-ketoglutarate with regeneration of reduced nicotinamide adenine dinucleotide (NADH) via malate dehydrogenase …
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Generation, manipulation and detection of NIR and MIR entangled photon pairs
The PhD thesis work here presented was carried out within the SiQuro project at the Nanoscience laboratory of the University of Trento. The project started in September 2013 and lasted four years. It was funded by the Provincia Autonoma di Trento (PAT). SiQuro’s goal was to bring the quantum world …
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Detection of Biologically Relevant Anions by Fluorescence and NIR Molecular Probes
… part has demonstrated that a near infrared (NIR) active mixed-valence diruthenium complex can catalyze the air oxidation of HS- to generate hydrogen peroxide, disulfane, and elemental sulfur. The NIR probe provides a convenient way for the detection of the HS- generation rate of a H2S donor …
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A battery powered near infrared (NIR) camera for the MIT HelioDome
… using silicon detectors and a near infrared (NIR) camera using InGaAs sensors. Both cameras are mounted to a table which has two degrees of rotational freedom, altitude and azimuth. Using the rotating table and cameras in combination with an ellipsoidal dome, which is coated with a …
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Ankunftszeitbestimmung ultrakurzer XUV Pulse von FLASH durch Kreuzkorrelation mit ultrakurzen NIR Pulsen
… with an electronically synchronized fs NIR laser, pump-probe experiments can be performed. Currently, the ultimate time resolution given by the pulse duration of both pulses is not achievable due to unpredictable shot-to-shot arrival time fluctuations of the FLASH pulses. The temporal …
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