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 309 for “"irradiance"”.
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Irradiance source for exoplanet atmospheric spectra
… photosynthetic bacteria under simulations of the irradiance conditions of a planet’s host star. The goal of this project was to design and construct a second-generation apparatus at Eastern Michigan University. The team focused on an irradiation source consisting of an interface of LED light …
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Spectral Irradiance and Phytoplankton Community Composition In Blackwater Estuaries
… research examined relationships between spectral irradiance (water color) and phytoplankton community composition in blackwater habitats. Spatial and temporal variability in water color and phytoplankton community composition were examined in two South Carolina estuaries: Winyah Bay and North …
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Irradiance forecasting and dispatching central station photovoltaic power plants
… method is used to model the sub-hourly solar irradiance. The irradiance data at any specific site is stripped of its periodicities using a pre-whitening process which involves parameterization of certain known atmospheric phenomena. The pre-whitened data series is considered stationary, …
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Effect of UV-A irradiance on lipid accumulation in Nannochloropsis oculata
… relationship of exposure duration to exposure irradiance on the stress response; and (3) to study the interactive effect of UV-A and nutrient concentration on lipid accumulation in <italic>N.oculata</italic>. The first and second objectives were addressed using a series of 7-day bioassay …
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Comparison and Investigation of Solar Spectral Irradiance with Solar Aspect Monitor
… from energetic particles and out-of-band irradiance is, however, present. The broadband (BB) technique is developed for isolating the 0.1 to 7 nm integrated irradiance to produce broadband irradiance. The results agree with the zeroth-order product from the EUV SpectroPhotometer (ESP) with …
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Laser-Matter Interactions at Extreme Irradiance: X-ray Generation and Relativistic Channelling
… and with the most powerful laser system the peak irradiance exceeds 10^19 W/cm^2. Furthermore, X-rays generated at a synchrotron radiation facility have been used in conjunction with a short-pulse laser to study temporal oscillations on a picosecond timescale in a crystalline material. In the …
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Photovoltaic Emulator Adaptable to Irradiance, Temperature and Panel Specific I-V Curves
… on the user specified parameters of panel model, irradiance and temperature. When a load change occurs, the power supply changes its current and voltage to track the calculated I-V curve, so as to mimic a solar panel. Over 250 different solar panels at varying irradiances and temperatures are able …
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Design and Analysis of Refractive Optical Systems for Irradiance Redistribution of Collimated Radiation.
Lens systems that modify the irradiance distribution of a collimated beam of radiation are useful primarily in applications involving laser beams. Since a laser is a source of high intensity, coherent, monochromatic light, a number of diverse applications for lasers have been suggested. However, …
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Implementation of Solar Irradiance Forecasting Using Markov Switching Model and Energy Management System
… leads to increased operational cost. Solar irradiance forecasting helps to reduce reserve requirement, thereby improving the utilization of PV energy. In this thesis, a new solar irradiance forecasting method for remote microgrids based on the Markov Switching Model (MSM) is presented. This …
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Interactive Effects of Ferulic Acid and Irradiance on Plant Growth and Photosynthetic Rate
… of this research was to determine how levels of irradiance modify plant response to a known allelochemical stress. Using a split plot design, the effects of irradiance and ferulic acid (FA) on growth, biomass allocation and plant photosynthetic capacity were monitored in summer greenhouse …
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Effects of Reduced Irradiance on the Biology of Eastern Black Nightshade (Solanum Ptycanthum)
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1986.
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The effects of growth salinity and irradiance on thylakoid stacking in lettuce plants
… we established that growth salinity and irradiance interacted in such a way that the moderate salinization of the nutrient solution was associated with less stacking at high irradiances and more stacking at low irradiances, both relative to controls.
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Effects of temperature and location on the photosynthesis-irradiance relationship of the seagrass Halophila ovalis
… study was to assess whether the photosynthesisirradiance (P-I) relationship of seagrass varied in different locations and under different temperatures. The model species used was Halophila ovalis, an ecologically important seagrass, which is globally distributed, but little is known about the …
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Performance and energy efficiency of low irradiance antimicrobial violet-blue light for environmental decontamination applications
… technology, due to its inherent safety at low irradiance levels, enabling its use for continuous decontamination of air and exposed surfaces within occupied settings. The research of this PhD generated new information pertaining to low irradiance 405-nm light and its efficacy for environmental …
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Assessing Broadband and Spectral Irradiance Variability for Solar Nowcasting Using Statistical Analysis and Machine Learning
… of high resolution spectral and broadband solar irradiance in Ottawa, Canada. The statistical assessment investigates the first- and second-order spectral and temporal dependencies of irradiance time series within the context of stationarity. The temporal structures indicate that solar irradiance …
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The effect of irradiance on the activation state of ribulose bisphosphate carboxylase in soybean leaves
Effect of irradiance on both initial and total ribulose bisphosphate carboxylase (RuBP Case) activities was investigated in soybean (Glycine max cv. Will) leaves. Initial RuBP Case activity (IA), present in a leaf extract prepared at 0°C and assayed without prior activation, was used as an estimate …
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