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 14 of 14 for “"Fluorescent lighting"”.
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An investigation of high frequency fluorescent lighting
Thesis: B.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1953
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Improved Properties of Natamycin Upon Formation of Cyclodextrin Inclusion Complexes
… degraded after 24 hours of exposure to 1000 lux fluorescent lighting at 4 °C. After 14 days of storage in darkness at 4 °C, 92.2% of natamycin remained in active form. Aqueous solutions of natamycin:β-CD complex and natamycin:γ-CD complex were significantly more stable (p < 0.05) than natamycin …
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White LED for general illumination applications
… to utilize energy more effectively. Solid state lighting (SSL) is a major area of research interest to use energy in a more efficient manner. Early light emitting devices (LEDs) were originally limited their use for low power indication lights. Later research produces high brightness LEDs …
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The Development and Packaging of a High-Density, Three-Phase, Silicon Carbide (SiC) Motor Drive
… applications, such as light-emitting diode lighting, compact fluorescent lighting, smart phones, and tablet PCs, to industrial applications that include hybrid, electric, and plug-in electric vehicles and more electric aircraft. To achieve the increase in energy efficiency and significant …
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Photochemical Protection of Riboflavin and Tetrapyrroles with Light Scattering Technology
… and 0.553 ° 0.246 mW, respectively). Effect of fluorescent light-exposure (2020-1690 lux) on the same system was monitored over 2 days. Riboflavin degradation in the photoreactor proceeded ~300 times faster than under fluorescent lighting. Riboflavin degradation was found to significantly …
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Prognostics and health management of light emitting diodes
… are now replacing traditional incandescent and fluorescent lighting, as they have many advantages including higher reliability, greater energy efficiency, long life time and faster switching speed. Even though LEDs have high reliability and long life time, manufacturers and lighting systems …
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The effect of low level concentrations of 2,4 dichlorophenoxyacetic acid on Chlorella pyrenoidosa
… x 10⁴ cells/ml and incubated under continuous fluorescent lighting at 140, 200 and 220 foot candles and 20 ± 1.0°C. Cell counts and fluorometric readings were made on even days and analyzed by least squares regression and analysis of variance. The results indicate that 2,4D promoted growth of …
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The Incomplete Domestic Landscape
… its crumbling concrete and rusting re-bar, its fluorescent lighting and dying house plants, its unflinching march towards a singular Progress. We question the modernist notions of control and efficiency as tools for better living. We are Duo. We seek to squat, to occupy, to co-opt. We are …
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Light Effects on Soy Oil and Soymilk Influence Oxidation, Product Quality, and Packaging Decisions
… packages and stored for 36 days at 4°C under fluorescent lighting (1122 lux ± 439 lux). Control packaging had no light protective additive (LPA; positive (foil-wrapped) and negative control) and the experimental packaging treatments had three levels of LPA (low, medium, high). Chemical and …
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EFFECTS OF EXTERNAL FACTORS ON CONSUMER’S PERCEPTION OF FOOD
… assessing the effects of both LED and fluorescent lighting, using a variety of sensory approaches. Our results suggested that soybean oil may be reaching the consumer at a differing quality than intended, which may be mitigated with superior packaging technologies. Photooxidation of …
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Perceptions of College Students Diagnosed with Panic Disorder with Agoraphobia: Academic, Psychosocial, and Environmental Views of their College Experience
… anxiety-like symptoms as the result of bright or fluorescent lighting). (3) A lack of social contacts both in and out of the classroom was a common experience. (4) While all subjects had tried medication to control their Panic Disorder, two of the subjects stopped their medication even though they …
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Study of the Effect of Light Emitting Diode (LED) on the Optimum Window-to-Wall Ratio and Whole-Building Energy Consumption in Open Offices
… several parameters, including the electrical lighting system, can impact the outcome. The current study investigates the role of lighting systems on daylight harvesting's effectiveness and their impact on window dimension and total energy consumption. In this study, the optimum window-to-wall …
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Reaction and transport processes in OMCVD : selective and group III-nitride growth
… sunlight than conventional incandescent and fluorescent lighting. The most recent advance in this direction is the fabrication of light emitting diodes (LEDs), and laser diodes that can emit in the short wavelength region of the visible spectrum (from green to violet). By using organometallic …