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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 181 for “"transmittance"”.
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Observation and modeling of atmospheric oxygen millimeter-wave transmittance
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.
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Investigation of the dependence of atmospheric transmittance for beam radiation on clearness index
Thesis made openly available per email from author, 1/4/2018.
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Effects of Ionizing Radiation and Thermal Treatment on the Optical Transmittance of Polycrystal CsI
Made available in DSpace on 2017-07-06T18:55:55Z (GMT). No. of bitstreams: 3 Procoli_Alfredo_MS.pdf: 53494592 bytes, checksum: 51ba486fae18e6069c981234e27f2453 (MD5) Procoli_Alfredo_MS_ABS.pdf: 1014084 bytes, checksum: fe782389c66fbc39dd079c9fe74b9640 (MD5) license.txt: 4813 bytes, checksum: …
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CARBON DIOXIDE LASER RADAR FOR MONITORING ATMOSPHERIC TRANSMITTANCE AND THE ATMOSPHERIC AEROSOL (REMOTE SENSING, INFRARED).
… to permit the determination of atmospheric transmittance and aerosol backscatter from multi-angle lidar returns. This work has been motivated by the need for a more complete knowledge of the optical properties of the atmosphere in the 9 to 11 μm spectral region. Results of preliminary …
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Characteristics and Treatment of Landfill Leachate and Optimization of Leachate Oxidation with Fenton's Reagent
… ratio. These SBR decant samples have poor UV transmittance and hence quench UV light. Five treatment methods were evaluated, coagulation, ultrafiltration, combined coagulation/ultrafiltration, combined ultrafiltration/oxidation and combined filtration/fentons. These processes were tested for …
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Wide Viewing Angle Liquid Crystal Displays
… to the designs of wide viewing angle and high transmittance liquid crystal displays. First, a design of wide viewing angle liquid crystal displays utilizing crossed linear polarizers is proposed. The designed multi-domain vertical-alignment liquid crystal display predicts superb contrast ratio …
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The application of Near Infrared Transmittance (NIT) individual kernel sorting technology to improve grain quality from spring and durum wheat infected with Fusarium and the effects on broiler chicken performance and immune response.
… investigated the use of new near infrared transmittance (NIT) technology for individual kernel sorting to reduce Fusarium damaged kernels (FDK) and mycotoxins in grain. There were two objectives: 1) determine the efficiency of sorting; and 2) assess how highly contaminated sorted grain …
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NIR light transmission through skin and muscle
… of wavelengths where the light has the maximum transmittance through tissue. In this range, absorption and scattering effects are relatively lower when compared to the visible or middle infrared wavelengths. Knowledge of the transmittance through tissue can help determine the effective light …
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Analysis of radiation mechanism and polarizing properties of metamaterials
… a basis for comparison are: 1. Leakage of light (transmittance) through a pair of crossed-polarizers, and 2. Fresnel coefficients of a single polarizer. The expressions for the transmittance and the Fresnel coefficients are obtained analytically using the kDB method. A novel procedure to determine …
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Plasma Treatment of Zinc Oxide Thin Film and Temperature Sensing Using the Zinc Oxide Thin Film
… conductivity of the film sacrificing film’s transmittance. Nitrogen plasma treatment following hydrogen plasma treatment could restore the transmittance maintaining the improved electrical property. Sequential oxygen, hydrogen, and nitrogen plasma treatment decreased the resistivity of zinc …
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A Numerical Evaluation of Thermotropic Materials for Polymer Solar Thermal Collectors
… In the clear state, high solar-weighted transmittance (≥80%, preferably ≥85%). To protect an absorber of polypropylene, material temperature limit of 115 �C, the solar-weighted reflectance of the thermotropic material must be ≥50%. To determine how to achieve these optical requirements, …
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Characterizing Water as Gap Fill for Double Glazing Units
… direct solar heat gain significantly reduce the transmittance of visible light through windows. The goal of this research was to characterize the performance of water as gap-fill for double-glazing units in eliminating the compromises that exist in current glazing systems with respect to light …
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Creation of a Continuous Ozone Dataset from 1972 Onwards and its Effect on Remote Sensing
… in the ozone data. The change that occurs in the transmittance due to the interpolated ozone density data compared to the transmittance due to original data is also calculated. Finally the effect of the change in transmittance on the ability to predict ground reflectance is also calculated. For a …
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Design of Submicron Structured Guided-Mode-Resonance Near-Infrared Polarizer
… grating width and 1200nm grating period has 95% transmittance at 2400nm, more than 1000nm resonance peak bandwidth, and an extinction ratio (ER) of around 300 with a moderated level of sidebands. The 700nm grating width and 1200nm grating period satisfied the microfabrication requirements and …
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High temperature annealing for structural optimization of silica aerogels in solar thermal applications
… monolithic silica aerogel, with its high solar transmittance and low thermal conductivity, is well-suited for solar thermal applications, particularly concentrated solar power systems. The properties of silica aerogel are directly determined by the structure of the highly porous, interconnected …
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Fully Solution Processed PEDOT:PSS and Silver Nanowire Semi-Transparent Electrodes for Thin Film Solar Cells
… that results in comparable sheet resistance and transmittance of ITO electrodes. Silver nanowires fail under electrical stress due to sulfur corrosion and Joule heating (which melts and breaks apart electrical contact). A silver oxide layer coating the nanowires could hinder sulfur corrosion and …
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Structure and properties of transparent conductive ZnO films grown by pulsed laser deposition (PLD)
… Furthermore, The ZnO films show an increase of transmittance with annealing temperature, which probably indicates that the annealing treatment improved the crystallinity. ZnO thin films were deposited using a different number of pulses in order to investigate the thickness dependence of the …
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Assessment of ultraviolet light disinfection efficiency of advanced wastewater treatment plant effluent
… vicinity of 50-80 mW-s/cm{dollar}\sp2{dollar} UV transmittance varied from 40% to 70% over the monitoring period and was strongly correlated with turbidity. No diurnal variations in effluent quality were detected during intensive sampling. Effluent quality was most strongly affected by storm …
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Étude de l'anisotropie optique des couches minces d'Au et de MgF2 / Au déposées en incidences oblique
… variations angulaires. Il a été démontré que la transmittance du film dépend fortement de l'angle d'incidence et de la polarisation de la lumière. Les résultats obtenus montrent que les utilisations de ces films dans la fabrication de filtres optiques sont prometteuses pour réaliser une …
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Studies on electrochromatic materials and devices
… studied under proton intercalation. A visible transmittance modulation of 0.70 and 0.80 and a visible coloration efficiency of 35 and 100 cm2.C-1 for a thickness of 300 and 200 nm were obtained for sputtered and chemically-deposited NiOx films respectively. Anodic films are extremely porous and …
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