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 10 of 10 for “"solution flow rate"”.
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Nitrate accumulation in hydroponically-grown lettuce cultivars and relationship to nitrogen supply
… related experiments, each concerned with nitrate (NO$\sb{3-})$ accumulation and reduction in hydroponically-grown lettuce (Lactuca sativa L.), and its relationship to various aspects of N supply, including solution NO$\sb{3-}$ concentration, the nitrate:ammonium solution ratio, and the …
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A study of zinc separation from an alkaline leach liquor using fixed and moving bed ion exchange systems
… study of the problem of Zn separation from NaOH solution through ion exchange. It was therefore essential to carry out a selection procedure for finding a suitable resin for the separation. Ten resins were tested from which Amberlite IRC-718 was selected. The resin was found to tolerate the high …
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Electrospun Nanocellulose: A New Biomaterial
… Cellulose in many forms has been demonstrated as potential biopolymer for tissue engineering; however, it has not been previously electrospun into a scaffold for tissue engineering applications. The overall goal of this research project was to produce electrospun cellulose acetate (CA) …
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Experimental Study of Meniscus Thin-Film Evaporation in a Horizontal-Tube, Falling-Film Heat Exchanger, Focusing on Dynamic Contact Angle Variation of an Advancing Meniscus
… were carried out investigating the effects of solution subcooling, evaporator wall superheat, and porous-layer coating on the portions of sensible and evaporation heat transfer in a falling-film system. The porous layer was found to enhance both sensible and evaporation heat transfer by …
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Studies of tris(2,2'-bipyridyl)ruthenium(II) electrogenerated chemiluminescence for detection in flowing streams
… (Ru(bpy)$\sb3\sp{2+}$) electrogenerated chemiluminescence (ECL) for detection in flowing streams. Three approaches were comparatively evaluated for use of Ru(bpy)$\sb3\sp{2+}$ as a chemiluminescent reagent in flowing streams. The three approaches evaluated are external generation of …
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Development of polymer based nanocomposite using electrospinning for sound absorption and isolation
… process parameters were studied including the solution concentration, the solution flow rate, the high voltage used for generating an electric field, the distance over which the fibers were collected, and the speed of the rotating drum on which the fibers were collected. Statistical analysis …
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Improving the stability of an oxime based electrochemical microsensor for organo-phosphate vapor detection
… organo-phosphate vapors using an aqueous oxime solution. The analyte diffuses from the high flow rate gas stream through a porous membrane to the low flow rate aqueous phase. It reacts with the oxime PBO (1-Phenyl-1,2,3,-butanetrione 2-oxime) to produce cyanide ions, which are then detected …
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Core-Sheath Differentially Biodegradable Nanofiber Structures for Tissue Engineering
… electrospinning can serve as near ideal substrates for engineering tissues. Various biodegradable polymers of natural and synthetic origins have been used to construct the nanofiber scaffolds. The use of natural polymers is important in that they contain specific cell recognition sites that …
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System integration and optimization of copper-chlorine thermochemical cycle with various options for hydrogen production
… oxidation of CuCl particles dissolved in concentrated HCl solution. A lower electrochemical cell voltage than water electrolysis is a significant advantage of CuCl electrolysis and makes this process attractive for hydrogen production. Nevertheless, an integration of both hydrolysis and …
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An investigation into the precipitation of Fe(III) oxyhydroxides in lime neutralization processes
… process. The HDS process is affordable to operate and has the potential benefit of the Fe(III) oxyhydroxide precipitates removing other pollutants through coprecipitation and adsorption, but it has its own shortcomings. These include, but are not limited to, the tendency of lime to be affected …