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 33 for “"Fluorescent light"”.
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Experimental evaluation of recycling rare earth elements from waste fluorescent light fixtures
Includes bibliographical references (pages 89-91).
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Dan Flavins installations in fluorescent light im Kontext der Minimal Art und der Kunstlicht-Kunst
… der Dissertation sind die installations in fluorescent light des New Yorker Künstlers Dan Flavin (1933 bis 1996), die in drei Hauptkapiteln unter verschiedenen Gesichtspunkten analysiert werden. Das erste Kapitel widmet sich Dan Flavins Kunst allgemein. Unterschiedliche Zugangsweisen führen …
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The Legacies of Marcel Duchamp and Vladimir Tatlin in Dan Flavin's Fluorescent Light Installations of the 1960s
… framework of my investigation. I shed critical light on the New York art scenes in which young artists revisited Duchamp's conceptualist practice and Tatlin's materialist dictum during this period, particularly focusing on how the cultural knowledge about them was mediated to Flavin. Along with …
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Oxidation barrier and light protective packaging properties for controlling light induced oxidation in milk
Fluorescent light exposure has well documented negative effects on fluid milk through oxidation reactions. A shift to light-emitting diode (LED) lights in retail dairy cases has occurred due to increased energy efficiency, but the effects of LED light on fluid milk are not known. The objective was …
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Analysis of Near-Infrared Phase Effects on Biometric Iris Data
… variations from near infrared waves derived from fluorescent illumination. Prior studies of iris data variances from infrared wave interference of halogen, incandescent, and sunlight with iris cameras suggest that similar changes may exist under near infrared wavelengths from fluorescent light. …
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White light emitting diode as liquid crystal display backlight
The discovery of high brightness (white) light emitting diode (LED) is considered as a real threat to the current lighting industry in various applications. One of the most promising sectors would be using white LED to replace the current Cold Cathode Fluorescent Light (CCFL) technology as the …
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The oxidation stability of extra virgin avocado oil : a thesis presented in partial fulfilment of the requirements for the degree of Master of Technology in Food Science at Massey University
… to determine the effect of prooxidant factors (light, temperature, oxygen level) on oil oxidation and quality; make recommendations for oil processing and packaging procedures to minimise oxidation; predict the shelf life of the oil and to determine the effect of commercial antioxidants on oil …
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Three Quasi-Experimental and Experimental Papers in Environmental Economics
… of an environmental technology, namely compact fluorescent light bulbs. In order to consider these factors, chapter two utilizes a large-scale field experiment informed by a theoretical model of adoption. Finally, chapter three utilizes a field experiment designed for a large apartment …
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Enhancing the efficiency of organic LEDs through spin-orbit coupling of charge-transfer states
… the efficiency of small molecule organic light-emitting diodes through spin-orbit effects is examined. Because only singlet spin states, statistically one quarter of the total possible states, emit fluorescent light, it has generally been thought that a maximum of 25% efficiency could be …
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The Sensory and Analytical Analyses of Nonfat Milk Formulations: Stability to Light Oxidation and Pasteurization
… were heat processed and/or exposed to fluorescent light to determine changes in potential flavor compounds. Solid phase microextraction-gas chromatography/flame ionization detection was used to analyze the concentrations of the volatile compounds (2-butanone, 2-pentanone, acetaldehyde, …
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Adaptive wavefront correction in two-photon microscopy using Coherence-Gated Wavefront Sensing
… are sensed by backscattered instead of fluorescent light. Thus, neither photodamage nor photobleaching occurs and wavefront distortions can be sensed up to several scattering lengths deep within the specimen. Fast wavefront correction can be realized, allowing the measurement of a …
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ASSESSMENT OF NEUROTENSIN RECEPTOR AGONIST EFFECTS ON FEAR-POTENTIATED STARTLE
… chambers were equipped with a shock-grid floor, fluorescent light, and an acoustic startle speaker. Conditioning took place between the light and floor shock, and test sessions measured startle to a 90 dB noise burst while the light was on (FPS) or off. Startle magnitude did not differ between …
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Controlling Light Oxidation Flavor in Omega-3 Fatty Acid Enriched 2% Milk by Packaging Films
… protection against flavor degradation from light. Addition of omega-3 fatty acid sources into milk increases the risk of light-initiated degradation of nutrients and sensory quality. The effectiveness of iridescent film materials in reducing light-induced oxidation of extended shelf-life …
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Controlling Light-Induced Flavors in 2% Milk
… have shifted commercial retail cases from fluorescent to light emitting-diode lights (LED), however the effect of LED light on milk quality (flavor and nutritional content) has not been thoroughly studied. Packaging efficacy of light protecting additives (LPA) in high-density polyethylene …
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An investigation of techniques in isolation and culture of the algal flora of soils
… of 2-40 foot candles of continuous, white, fluorescent light and 25-30 °C was constructed and described. 3- Three composite soil samples were collected and inoculated into cultures of varying chemical and physical characteristics. The primary enrichment cultures thus established were …
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Peroxidative protection of parenteral admixture by d-α-tocopherol and its effect on oxidative status of obese cats
… 32, 48, or 64 IU/g of lipid). PA were exposed to fluorescent light for 24 hours at room temperature. Hydroperoxides were measured at baseline and 24 hours hang time. Significantly lower hydroperoxide concentrations were found with > 24 IU/g of lipid at baseline (P < 0.01). A higher d-α-tocopherol …
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Photochemical Protection of Riboflavin and Tetrapyrroles with Light Scattering Technology
… with a 350W mercury lamp, provided full spectrum light or narrow bandwidth wavelength exposure, using filters allowing transmission at 25 nm wavebands at maximum peak height at 450, 550, or 650 nm. Riboflavin concentration was measured by HPLC over 8 hours of exposure. Increased TiO? load and …
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Using low cost components to determine chlorophyll concentration by measuring fluorescence intensity
… interface between the high sensitivity TSL257 light-to-voltage light sensors and the 32-bit ARM microcontroller that controls the system. The microcontroller software controls the 470 nm LED current to create a 75 ms light pulse that has a 63 Hz sine wave modulated on it. The low cost light …
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Effect of shelf-life and light exposure on acetaldehyde concentration in milk packaged in HDPE and PETE bottles
… amber PETE, clear PETE, and clear PETE with UV light block and was exposed to fluorescent light of 1100-1300 lux (100-120 FC) at 4oC for 18 days. Sensory and chemical analysis and was done on milk from all containers over a period of 18 days. Emphasis was on oxidation, acetaldehyde and lacks …
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Application of Social Influence Strategies to Convert Concern into Relevant Action: The Case of Global Warming
… (c) replacing their own inefficient incandescent light bulbs with compact fluorescent light bulbs (CFLs). The primary independent variable was the intervention technique used to encourage the three behaviors. The Information Only condition received a standard informational presentation, and a …
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