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 910 for “"Near-infrared"”.
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Novel near-infrared absorbing dyes
New near-infrared absorbing donor-acceptor chromophores have been investigated by varying the electron donating and accepting strength of the two halves of the molecule within wide limits. The dihydroperimidine, perimidine, Michler's ethylene and 1-decyl-2(1H)- methyl-benz[c, d]indolium iodide …
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Near-Infrared Spectroscopy for Brain Computer Interfacing
… novel approach to BCI design, using noninvasive near-infrared spectroscopic (NIRS) techniques to develop a userfriendly optical BCI. NIRS is a practical non-invasive optical technique that can detect characteristic haemodynamic responses relating to neural activity. This thesis describes the use …
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Near-infrared reflectance soil organic matter sensor
In-field sensing of soil organic matter content would be desirable to provide a control input for the variation of soil-applied herbicide application rates. Control based on organic matter content could eliminate overapplication on less productive areas within a field, thereby improving …
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Near-infrared emission spectroscopy of explosive breakout
… was to explore the early time breakout in the near infrared spectrum of various high explosives. Explosives tested include RDX, Composition B, HMX, and PETN, along with RP1 and RP80 detonators in air and nitrogen environments. The first 20 microseconds after detonation were examined using a …
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Carbon nanotubes as near infrared laser susceptors
The coupling efficiency of carbon nanotubes with near infrared laser radiation at 940nm wavelength was investigated. Nanotubes treated with different post processing methods were irradiated at different laser power intensities as dry samples and suspensions in water or ethanol. The interaction with …
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Machine Learning Methods for functional Near Infrared Spectroscopy
… of human machine interaction. Functional Near Infra-Red Spectroscopy (fNIRS) device is a relatively new device that enables inference of brain activity through non-invasively pulsing infra-red light into the brain. The fNIRS device is particularly useful as it has a better spatial …
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A spectroscopic system for near infrared glucose measurement
… of complications. In this thesis, the use of the near infrared absorption spectroscopy is proposed and investigated. The light radiation is envisioned to be transmitted through thin tissue such as the webbing tissue between the thumb and the index finger. The main technical difficulties are …
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Near-infrared Characterization of the Atmospheres of Alien Worlds
In this thesis I present near-infrared detections of the thermal emission of a number of hot Jupiters and likely transit depth differences from different wavelength observations of a super-Earth. I have pioneered ``Staring Mode'' using the Wide-field Infrared Camera on the Canada-France-Hawaii …
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A Neurofeedback-based Near-infrared Spectroscopy Brain-computer Interface
Near-infrared spectroscopy (NIRS) brain-computer interfaces (BCIs) enable individuals to interact with their environment using only cognitive activities. This thesis investigates the development of a more user-friendly, intuitive, and easy to use NIRS-BCI through six research objectives: exploring …
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NEAR INFRARED SPECTROSCOPY IN ANIMAL NUTRITION AND FEED EVALUATION
La presente tesi di dottorato è incentrata sull’importanza dell’utilizzo della spettroscopia del vicino infrarosso (NIRS) come un mezzo rapido e a basso costo per la previsione e il monitoraggio della composizione dei nutrienti e della qualità di diversi tipi di alimenti per animali, essiccati e …
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Gallium lanthanum sulphide glasses for near-infrared photonic applications
… In addition, they have one of the highest nonlinear figures of merit among optical glasses, and therefore have potential for all-optical switching and other nonlinear devices. Practical applications, however, have been prevented by the impossibility, to date, of achieving single mode fibres with …
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Frequency-Domain Near-Infrared Spectroscopy in the Human Brain
Monitoring brain tissue oxygen supply, demand, delivery and consumption can be achieved by quantifying the absolute values of oxy- and deoxy-hemoglobin and how these quantities change over time during rest, functional activation, pathology, and disease. My dissertation describes the development, …
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Near-Infrared Indium-Gallium Phosphide-Arsenide Double Heterojunction Lasers
Made available in DSpace on 2014-12-12T20:54:46Z (GMT). No. of bitstreams: 1 7804200.pdf: 3291865 bytes, checksum: ce6e38a15de39527abc38a543f50830f (MD5) Previous issue date: 1977
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Characterization of spray dried powders by near infrared spectroscopy
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
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A deep near infrared survey along the Norma Wall
… thesis, I present an imaging survey in the three near-infrared bands (J, H, Ks) along the most obscured part of the Norma Wall, the so called Norma Wall Survey (NWS). It has the goal to uncover the galaxy distribution in this area. The near-infrared waveband was selected because it is less …
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The near infrared luminosity function of the Norma Cluster
In this thesis, a near infrared KB-band photometric catalogue of galaxies in the Nonna cluster is presented. The survey of the cluster covers an area of '" 0.8h702 Mpc2, and is estimated to be complete to a magnitude of MK. ⋨-19 mag; this extends into the dwarf regime, 6 magnitudes below M'k •. The …
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Comet-asteroid differentiation using visible and near-infrared spectroscopy
… their chemical makeup vaporize when they near the sun. Comets can lose this ability to form a coma or tail, however, through a variety of dynamical processes, creating objects that could chemically be comets but that do not fit the traditional definition. Thus, a new challenge has arisen …
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