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 168 for “"infrared (IR)"”.
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Oscillating Heat Flow From the Pinna of the Ear of the Rabbit (Oryctolagus Cuniculus)
… (Oryctolagus cuniculus) was studied using infrared (IR) thermography, which measures the thermal characteristics of the pinna more accurately than the standard method of measuring pinna temperature with a thermocouple. Heat flow from the pinna was found to oscillate.
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Mono- and multinuclear PGM complexes containing thiosemicarbazones synthesis, characterization and antiplasmodial evaluation
… been synthesized and characterized using NMR, infrared (IR) spectroscopy and mass spectrometry. These ligands were used towards the synthesis of three series of mono- and multinuclear complexes, in which the thiosemicarbazone ligands chelate in either a bidentate (N,S) or tridentate (C,N,S) …
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Spectroscopic Studies of Rhodium(ii) Perfluorobutyrate and Synthesis of Metallo-Hapten Complexes
… using electron paramagnetic resonance (EPR) and infrared (IR) spectroscopy. The shift of the g-value in the EPR spectra of the spin label complex 2,2,6,6-tetramethylpiperidinyloxy (TEMPO) and the shift of the infrared stretching frequency of carbon monoxide (CO) were measured as various Lewis …
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Material processing of quantum well infrared photodetectors
… (RTA) GaAs/AlGaAs multiple quantum well (MQW) infrared (IR) photodetectors (QWIPs) epitaxially grown on GaAs and Si substrates is presented. The advances in epitaxial growth allow the precise control of the dimensions, doping, and matrix concentration of the MQW. Therefore, the design of a QWIP …
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On the evolution of star forming galaxies : the metallicity of dwarfs and the effect of environment on local luminous IR galaxies
… the metallicity of dwarfs and the effect of environment on local luminous infrared galaxies" is divided into two main areas. First a detailed study of the environment and star formation relationship of local Luminous Infrared Galaxies (LIRGs), with infrared (IR) luminosity (LIR) between 1011L …
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Infrared imaging - case studies and applications
… improvements in the use and applications of infrared (IR) imaging. Compared with traditional imaging in visible light, infrared imaging has abilities to convey significant additional information. Applications in medicine require wavelengths in the range of 0.8 to 25 microns while metrology …
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Early Forest Fire Detection Using Texture, Blob Threshold, and Motion Analysis of Principal Components
<p>Forest fires constantly threaten ecological systems, infrastructure and human lives. The purpose behind this study is minimizing the devastating damage caused by forest fires. Since it is impossible to completely avoid their occurrences, it is essential to accomplish a fast and appropriate …
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Analysis of statistical parameters derived from satellite digital data (July 1978 GOES-West) for use in diagnosing marine fog areas.
GOES West Infrared (IR) and Visual (VIS) satellite observations for the North Pacific Ocean area, 35-55N, 120W-180 , at 2 345 GMT for eight June/July 1978 dates are processed to yield 20 statistical parameters which are analyzed for their use in discerning the existence of marine fog. The …
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High Extinction Ratio Subwavelength 1D Infrared Polarizer by Nanoimprint Lithography
Infrared (IR) polarizers have been widely used in military and commercial applications. Controlling the polarization of incident light is one of major issues in the detector systems. However, conventional polarimetric IR detectors require series of polarizers and optical components, which increase …
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Investigation of Separate Effects of Surface Condition on Subcooled Flow Boiling Heat Transfer
… boiling heat transfer. To that end, we prepared Zircaloy-4 heaters that mimic the commercial PWRs fuel cladding, and conducted subcooled flow boiling experiments at 1 bar, 10 K subcooling, and 1000 kg/m2 s mass flux, using high-resolution high-speed video (HSV) and infrared (IR) diagnostics. A …
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Optical pyrometry for noncontact temperature measurement
A noncontact two-color pyrometer, which uses an infrared (IR) transmitting rod and IR lenses to optically measure the temperature of a molten particle as it falls in an evacuated drop tube, has been designed and tested in the laboratory and in the field. The design uses a calcium fluoride (CaF₂) …
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Microscopic diffusion measurements with nanoporous materials: complementary benefits of infrared microimaging and pulsed field gradient NMR
… techniques of diffusion measurement, namely infrared (IR) microimaging and pulsed field gradient (PFG) NMR. The dissertation contains mainly five chapters. The first chapter introduces diffusion phenomena in general and concisely explains the importance and the current challenges of the …
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Use of Ion Implantation in the Construction of an Uncooled Microbolometer
Uncooled infrared (IR) bolometers have been constructed using a sensor bridge made of an electrically conductive polymer attached to a quartz substrate. The bridge is mounted on two sides and crosses an etched trough in the underlying substrate. Current is supplied to the bridge by means of two …
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A study of the infrared emission of galactic supernova remnants
This work aims to investigate the nature of the infrared (IR) emission of supernova remnants (SNRs), and to use this radiation to reveal the physical properties of SNRs and the gas and dust they contain. This project has been made possible only recently, following the success of the Infrared …
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Discrete frequency mid-infrared spectroscopic imaging using quantum cascade lasers
Infrared (IR) spectroscopic imaging is an analytical technique that directly images the spatial distribution of chemical components within a sample in the absence of external contrast agents. This is especially advantageous with biological samples where the mid to far-infrared wavelength range …
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Decoding Invisible 3D Printed Tags with Convolutional Neural Networks
… utility in applications such as augmented and virtual reality interactions, tracking logistics, and robotics. The InfraredTag is a newly developed tag that is imperceptible to the eye and can be 3D-printed as part of an object. The InfraredTag can be detected by an infrared (IR) camera. A common …
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Internet of Things (IoT) Applications With Diverse Direct Communication Methods
… the various characteristics of different wireless communication methods in terms of range, energy-efficiency, and radiation pattern. We find that a well-established communication method might not be the most efficient, and other alternate communication methods with the desired properties …
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Multi-sensor (IR) data fusion for mobile robot navigation using occupancy grid method.
… applications in an unstructured environment. Different types of sensors have been provided to gather information about the environment: infrared (IR) range finders, vision, tactile, position. While vision and tactile sensors were approached by other related work, this thesis is …
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Thermomechanical sensitivity of microcantilever in the mid-infrared spectral region
… sensitivity of bimaterial cantilevers over a mid-infrared (IR) spectral range (5-10 µm) that is critical both for chemical analysis via vibrational spectroscopy and for direct thermal detection in the 300-700 K range. Mechanical bending sensitivity and noise were measured and modeled for six …
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Thermal unfolding dynamics of proteins probed by nonlinear infrared spectroscopy
… of proteins. The spectroscopic tool is nonlinear infrared (IR) spectroscopy of the protein amide I band. Among various nonlinear IR techniques, two-dimensional infrared (2D IR) spectroscopy, which is an IR analogue of 2D NMR, is the most informative. A 2D IR spectrum is obtained from a double …
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