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 21 for “"Spectroscope"”.
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A low-cost, portable, web-based impedance spectroscope for agricultural applications
… and biological tissues. Traditionally, an EIS spectroscope consists of a bulky and expensive electronic system, and handling this equipment can be difficult without proper training. These limitations forestall EIS spectroscopy to be employed for in-field and mobile agricultural applications. To …
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Imaging the burn region of laser driven implosions on OMEGA using the proton core imaging spectroscope
… have been made with the Proton Core Imaging Spectroscope (PCIS). Using CR-39 nuclear track detectors, PCIS applies the technique of penumbral imaging to measure the radial profile of D-D and D-3He protons produced by implosions of D2-3He-filled capsules. For capsules with 20 [mu]m-CH shells, …
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A Study of miniature methods of terahertz spectroscopy
… terahertz radiation. However, the complete spectroscope apparatus remains large due to the use of components such as lenses and mirrors designed in the far-field optical regime. A truly miniature terahertz spectroscope would be designed without lenses and mirrors to enable a wide range of …
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The effect of hydration state, Fe, and spin state of Fe on the elasticity of mantle minerals at high pressure
… is nearly half of that using Secondary Ion Mass spectroscope. This difference can explain current discrepancies in the reported effects of hydrogen content on the elasticity of wadsleyite.
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Recycling of plastics derived from end-of-life (EOL) electronic equipment
… samples using FT-IR (Fourier Transform Infrared Spectroscope). Quantitative analysis was performed using Elemental Analyzer to get the calibration curves for PC/PS and PC/ABS. A number of organic solvents were investigated to dissolve the desired samples. A series of separation experiments were …
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A novel integrated platform combining atomic force microscopy and fluorescence correlation spectroscopy
… microscope (AFM) and fluorescence correlation spectroscope (FCS) are two complimentary techniques that are commonly employed investigate mechanics and dynamics of liquids at interfaces. In this thesis, the design and construction of a novel integrated platform combining AFM and FCS is …
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Study of Chemical States, Composition and Adsorption Behavior of Iron Coated Granular Activated Carbon (Fe-GAC) for Selenate Removal and Feasible Adsorbent Modifications
… for anions under acidic conditions. Raman spectroscope was used to determine the type of surface complex and the coordination state of adsorbed selenate at different pH with 0.1 M ionic strength. The results showed that inner-sphere and outer-sphere complexes were formed at pH 5 and 8, …
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Investigation of adipose-derived mesenchymal stem cells interaction with electrospun demineralized bone matrix nanofiber scaffolds
… was quantified by energy-dispersive X-ray spectroscope (EDS). After three weeks of culture, EDS revealed high calcium and phosphorus deposition on DBM scaffolds compared to PCL controls. The DBM scaffolds exhibited increased mineralization over three weeks, both with and without cells. …
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Effect of Processing Path on Microstructure and Mechanical Properties of a Low Carbon, Low Alloy Advanced High Strength Steel
… scanning electron microscope, energy-dispersive spectroscope, and electron backscattered diffraction tools. Mechanical properties were determined by subjecting the steel samples to quasi-static uniaxial tensile testing at room-temperature. The microstructure of the steel in air-cooled condition …
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A microscopic model of signal transduction mechanisms: olfaction
… tunneling (IETS). The nose thus acts as a 'meat spectroscope'. First the background biology of the olfactory system is evaluated, then the conjecture is posed as a soluble problem. Traditional physics ideas are reconciled with the biological environment. It is proven that no physics based …
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Optical instruments for characterization in the nano-scale
… such instruments, the Florescence Correlation Spectroscope for determination of hydrodynamic size of quantum dot bioprobes to nanometer precision in part one, and the Long Trace Profiler/Optical Slope Measurement System for characterization of line spacing errors in X-ray blazed synchrotron …
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Investigation of physical properties of mesoporous NANO-Ti02 for dye-solar
… Optical analyses were done using UV-VIS-NIR spectroscope. The Scanning Electron Microscope (SEM) and Atomic Force Microscope (AFM) were used to observe the surface morphology and surface roughness of the mesoporous TiO2 nanostructures, respectively. Elemental analyses were done using X-Ray …
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Geochemical Analysis of Ironstone Preserved Molluscan Fossils of the Hell Creek Formation (Cretaceous) and Ludlow Member of the Fort Union Formation (Paleogene) of Southwestern North Dakota
… (SEM) equipped with an energy dispersive spectroscope (EDS). Composition information collected from the XRD analyses were entered into the computer program Geochemist’s Workbench®, in which Eh-pH stability diagrams were created to constrain the geochemical conditions necessary to produce …
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Interactions of ionic liquids with uranium and its implications on biotransformation
… and in precipitate were confirmed by UV-Vis spectroscope, XANES and EXAFS analysis. Since ILs are relatively resistant to photodegradation and show toxicity at higher concentrations, the persistence in the environment was determined by the investigation of biodegradation of the three ILs. A …
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Development and Characterization of an Inexpensive Single-Particle Fluorescence Spectrometer for Detection and Classification of Pollen and Other Bioaerosols
… instrument operates similar to a traditional spectroscope, though is able to collect spectral light from several small particles simultaneously. This process allows for spectroscopic analysis of many particles at the same time. The instrument went through several phases of both development and …
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A parametric investigation on the influence and inhibition performance on CO2 corrosion of carbon steel
… resistance (LPR), Electrochemical Impedance Spectroscope (EIS) and Potentiodynamic polarization(PDP) were employed in measuring the corrosion rate as a function of time on HAc and MEG concentrations. In addition, the efficiencies of three corrosion inhibitor based chemicals (the phosphate …
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The high temperature geochemistry of vanadium: From isotope ratios in ocean island basalt to thermal diffusion processes at the core-mantle boundary
… Trace element and X-ray absorption near-edge spectroscope (XANES) results show: 1). The relationship between ionic size and Soret coefficient of trace element groups with different charge indicates the importance of valence state in thermal diffusion experiments; 2). XANES spectra of basaltic …
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Quantitative, Photocurrent Multidimensional Coherent Spectroscopy
… not possible with more conventional electronic spectroscope, and by fitting our data to this mathematical model, we will ultimately describe the mechanism that governs the carrier transport in semiconductors near the band edge.</p> <p>After this we will shift gears to talk more about the …
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Phantom and computational studies towards the clinical translation of gas in scattering media absorption spectroscopy into neonatal respiratory care
… with the aid of specialized instruments like the spectroscope, and since then, the absorption lines have been subject of experimental and theoretical developments. Today, we know that the nature of the absorption lines can be described by quantum mechanical changes induced in the atoms or …
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High Speed Fiber Optic Spectrometer
This dissertation presents the structure, operational principle and mathematical model of a novel high speed fiber optic spectrometer (HSFOS). In addition, the performance analysis is conducted and preliminary experimental results are listed and discussed. Such a spectrometer is highly desired by …
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