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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 296 for “"water chemistry"”.
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Modeling of BWR water chemistry
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1990.
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Relative Effects of Water Chemistry on Aspects of Iron Corrosion
… of all publicly and privately owned potable water pipes in the U.S. is on the order of $2.4 trillion dollars, and costs associated with deteriorating iron pipes is billions of dollars per year. Problems arising from iron corrosion include reduced lifetime of the material, scale buildup and …
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Modeling water chemistry and electrochemical corrosion potential in boiling water reactors
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1997.
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Paleo-aridity records investigated through drip water chemistry in Lehman Caves, Nevada
… has direct examples of dramatic changes in water availability in this area, allowing for a comparison of precipitation changes and responses for the Great Basin. In Lehman Cave, Nevada, ten drips above actively-forming stalagmites were sampled monthly. Glass growth plates were also placed …
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Effects of water chemistry, temperature, gaseous cavitation & phosphate inhibitors on concrete corrosion
… still make up a large percentage of the drinking water infrastructure at about 17% of its total length. An improved understanding of the corrosion mechanisms involved steps that can be taken to mitigate concrete corrosion are very important. This study examined the role of phosphate chemicals, …
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Role of Water Chemistry in Lead Release during Drinking Water Supply and Augmentation
… heavy metal and legacy contaminant in drinking water that can be released from lead service lines and lead-containing premise plumbing. Lead concentrations in water are sensitive to changes in water chemistry. The extent of lead release is often driven by the solubility of the corrosion products …
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Stream water and soil water chemistry after the Table Mountain wildfire, Washington, USA
… were made to investigate how stream water and soil water chemistry changed over 16 months following the Table Mountain wildfire. Sites with different burn severity were also compared. The fire occurred in 2012 in Kittitas County, north of Ellensburg, Washington. Samples were collected …
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Relationships Between Landscape, Spatial Scale, and Stream Water Chemistry in a Subtropical Karst System
… river characteristics, including surface water chemistry (Allan, 2004). Converting natural vegetation for urban and agricultural land use can alter water chemistry, creating a loss of biodiversity and reduced human consumptive and recreational use (Osborne and Wiley, 1988; Johnson et al., …
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The Influence of urban development on the water chemistry of the Cape Flats aquifer
Large quantities of water are available in the Cape Flats sandy aquifer in the Western Cape. Local industrial, agricultural, domestic and urban development activities are known to be potential polluters of this water through infiltration of wastewater, because of the unconfined nature of the …
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The Influence of Water Chemistry on H2 Production and Uptake during Anaerobic Iron Corrosion
… and aesthetic problem facing utilities. In the water distribution system, problems caused by iron corrosion include "red water", scale buildup, and pipe failures. It is necessary to improve our mechanistic understanding of anaerobic iron corrosion in order to better address these concerns. …
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Influences of Water Chemistry and Flow Conditions on Non-Uniform Corrosion in Copper Tube
Water chemistry and fluid velocity are factors that can perpetuate certain types of non-uniform pitting corrosion in copper tube, specifically in waters with high chlorine and a high pH. These two parameters can further act synergistically to alter pitting propensities in copper pipes subjected to …
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Influence of Water Chemistry Parameters on the Dissolution Rate of the Lead (II) Carbonate Hydrocerussite
This work has focused on the kinetic dissolution of the lead (II) carbonate hydrocerussite (Pb3(CO3)2(OH)2) under four pH conditions (7.5, 8, 9, 10), three dissolved inorganic concentrations (DIC; 10, 20, 50 mg C/L), and three initial hydrocerussite concentrations (10, 20, 50 mg/L) in batch …
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Effects of water chemistry and panning on flavor volatiles and catechins in teas (Camellia sinensis)
… time, chlorine, chloramine, iron, copper, pH and water hardness were investigated for their effects on extraction of epigallocatechine gallate (EGCG) and caffeine in green tea and oolong tea aqueous infusions. The extraction of EGCG and caffeine were lower when green tea was brewed in hard water …
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Effect of Various Water Chemistry Factors on Legionella Proliferation and the Premise Plumbing Microbiome Composition
… a unique challenge for maintaining drinking water quality. Of particular concern are opportunistic pathogens, including Legionella pneumophila which can regrow in premise plumbing and cause disease in immunocompromised populations. The goal of this work was to explore engineering methods for …
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Water chemistry characterization and component performance of a recirculating aquaculture system producing hybrid striped bass
… and three replicates each at 66 and 33 fishlm3. Water chemistry and water quality characteristics were monitored throughout the 228 day growth trial for all eight systems. A system component performance analysis was done for both the multi-tube solids clarifier and rotating biological contactor …
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A study on the water chemistry and plankton in blackwater lakelets of the south-western Cape
Blackwater lakelets in the south-western Cape are amongst the most darkly coloured humic waters in the world. In addition the aquatic invertebrate fauna of this region represents a relict and highly endemic group of the South Temperate Gondwanian fauna. The major environmental and biological …
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