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 “"fogging"”.
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Evaluation of superhydrophilic polyelectrolyte multilayered films for anti-fogging applications
… that demonstrate great promise for anti-fogging and anti-reflection glass coating applications. The automotive glass industry is then identified as a potential market for this technology, and competing anti-fogging technologies as well as relevant intellectual property are reviewed to …
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A fogging scrubber to treat diesel exhaust: field testing and a mechanistic model
… in an underground mine environment, by using a fogging scrubber to treat the entire exhaust stream from a diesel vehicle. A total of 11 field tests were conducted. Based on measurements of nanoparticle number concentration at the inlet and outlet of the scrubber, the fog treatment in the current …
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Fog Cooling, Wet Compression and Droplet Dynamics In Gas Turbine Compressors
… research has also investigated employing inlet fogging to gas turbine system fired with alternative fuels such as low calorific value synthetic gases. The key results include discovering that the saturated fogging can reduce compressor power consumption, but overspray, against conventional …
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Investigation of Chloride-induced Stress Corrosion Cracking for Long-Term Storage of Spent Nuclear Fuel in Dry Storage Systems
… to simulate marine environments in a controlled fogging chamber to examine 304 and 304L stainless steel U-bend and welded U-bend samples. The samples were exposed to chloride rich and humid fogging in a corrosion chamber at 35℃ continuously for 4 weeks, 8 weeks, and 12 weeks. The same experiment …
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Chemical Surface Modification of Polycarbonate to Increase Hydrophilicity
… commonly used in glasses lenses, is prone to fogging. Fogging can be reduced by modifying the structure of polycarbonate to be more hydrophilic, ideally superhydrophilic with a contact angle less than 10°. Many chemicals were tested to see if they could increase the polarity of polycarbonate. …
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Nanostructured multifunctional materials for control of light transport and surface wettability
… surfaces also demonstrate robust anti-fogging or self-cleaning properties, offering potential benefits for applications such as photovoltaic solar cells. As an extended function of this silica nanocone surface, we propose the systematic design and development of nanostructured …
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Fabrication of anti-reflective and imaging nanostructured optical elements
… materials: for example, self-cleaning/anti-fogging surfaces, and solar cells with increased efficiency. I fabricated a functional surface where both wetting and reflectivity are controlled by geometry. Using a periodic array of subwavelength-sized high aspect ratio cones, patterned on glass …
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Understanding disability glare: the effects of scattered light on visual performance
… light in young, healthy eyes was increased using fogging filters. Increased scatter is shown to have only a small effect on chromatic sensitivity and the ability to recognise letters or other high contrast optotypes that are commonly used to assess visual acuity. Contrast sensitivity, on the other …
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Transport phenomena at elevated temperatures - studies related to direct polymetallic smelting
… operating conditions most susceptible to vapour fogging and subsequent metal losses. A fog problem is most likely to occur in condensable mixtures with high vapour concentrations and low initial quantities of superheat, and at low cooling wall temperatures as well as at high total pressures. Any …
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Physico-chemical hydrodynamics of droplets on textured surfaces with engineered micro/nanostructures
… such as low-reflective, self-cleaning or anti-fogging glass, easy-cleaning robust inkjet printer heads, or efficient fog-harvesting surfaces. Developing such functional surfaces requires interdisciplinary considerations that have not been broadly explored and which integrate principles from …
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Seasonal abundance and diversity of insects on Sclerocarya birrea and Berchemia discolor in Tshikundamalema, Limpopo Province, South Africa
… the other site was savannah grasslands. Canopy fogging was used to sample insects. Insect samples were collected at one time point for each of the seasons: summer (February), autumn (May), winter (July) and spring (November). Insects were identified to morphospecies and Simpson’s diversity index …
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The Impact of a Scleral Lens on the Eye
… determine the composition of the FR in midday fogging (MDF), and (3) determine if conjunctival compression from the LZR changes the intraocular pressure (IOP) and optic nerve head minimum rim width (MRW). Methods: (1) In normal subjects (n=15) wearing SL for 8-hour, basal and FR tear samples …
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Technoeconomic Analysis of Textured Surfaces for Improved Condenser Performance in Thermoelectric Power Plants
… fouling reduction, corrosion resistance, anti-fogging, anti-icing, and condensation enhancement. Integrating these properties, nonwetting surfaces have shown significant potential in improving the efficiency of energy applications. The first part of the thesis work aims at developing a …
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Factors affecting loblolly pine growth following site preparation
… broadcast-burn, one involved shearing all raking fogging-debris into windows, and one was no site preparation prior to planting. All treatments were applied to 12 sites in the South Carolina and Georgia Piedmont. After four years in the field, 756 trees within the site preparation treatment areas …
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The influence of curing techniques and chemical admixtures on the properties of concrete
… as wet or sealing. Wet methods include fogging, sprinkling, ponding, immersion and wet coverings. Sealing methods include plastic coverings and membrane forming curing compounds. Crystallising permeability reducing admixtures may be included in the concrete mix design in order to …
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Patterns of arthropod distribution and determinants of arthropod assemblage composition in a natural West African savannah
… samples were obtained by applying (i) canopy fogging for mature individuals of three tree species (Anogeissus leiocarpa, Burkea africana, Crossopteryx febrifuga) and (ii) a modified beating technique allowing to sample the complete arthropod communities of the respective study plants for …
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A Laboratory Investigation of Abatement of Airborne Diesel Particulate Matter Using Water Droplets
… density; shorter residence times; additional fogging devices; and no diffusion dryer downstream of the fog treatment were also carried out. These yielded an average overall improvement in DPM mass removal of about 45% attributed to the fog treatment (versus no treatment). The significant …
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The effects of replanting and restoration of riparian buffers on arthropods in oil palm systems
… and ground microhabitats using insecticide fogging; sticky traps and hand collections; and pitfall traps, respectively. We sampled in different ages of oil palm, and in sites that were within, near, and far from riparian buffers undergoing different restoration management, in order to …
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Biomass Integrated Gasification Combined Cycles (BIGCC)
Conversion of biomass to energy does not contribute to the net increase of carbon dioxide in the environment, therefore the use of biomass waste as a clean and renewable fuel source is an attractive alternative to the use of fossil fuels. Biomass can be converted to energy via direct combustion or …
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Greenhouse climate model : an aid to estimate the influence of supplemental lighting on greenhouse climate
… screens, artificial lighting, heating system, fogging system, roof vents, and mechanical ventilation. Simulation results show that the requirements to maintain the desired indoor climate change depending on the mutual relation between the blackout screen position and the outdoor solar …
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