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 784 for “"seawater"”.
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Improving seawater desalination and seawater desalination brine management
Water scarcity is an increasing problem globally. Seawater desalination is increasingly being relied upon as a means of mitigating the problem of water scarcity. However, seawater desalination has costs associated with it: capital costs, cost of energy to desalinate and environmental costs from the …
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Volatile organic compounds in seawater
… and solid adsorbent trapping were applied to seawater and related samples to concentrate volatile organic compounds. The concentrates were subsequently analyzed by glass capillary gas chromatography and combined gas chromatography-mass spectrometry. The compound identities and the spatial and …
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Dynamic properties of seawater surfactants
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1996.
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The Biogeochemistry of Iodine in Seawater
… iodide are the two major species of iodine in seawater. In comparison to iodate, iodide is thermodynamically unstable in oxic seawater. The conversion (or reduction) of iodate to iodide may be mediated via biological activities. Since biological activities vary with the season, the conversion …
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Wild Blue Media: Thinking Through Seawater
… dissertation, "Wild Blue Media: Thinking Through Seawater," considers how the ocean environment produces cognitively estranging conditions for conceptualizing media and media theory. Concepts in media theory have thus far exhibited what I call a "terrestrial bias," theorizing primarily dry …
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Economics of seawater desalination in Cyprus
… continue farming citrus. To do so means building seawater desalination plants that contribute 5.0 to 6.0 kg of CO 2, a greenhouse gas, to the atmosphere per m3 of water produced by desalination, along with the cost of the water nearing one US dollar per m3 . Desalination is a painful solution to …
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The characterization of humic substances in seawater
… substances were isolated in gram quantities from seawater by a newly developed procedure of adsorption on a crosslinked polystyrene-divinylbenzene resin. The chemical and physical characteristics of both humic acid and fulvic acid fractions were studied. The elemental composition, the acidimetric …
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The characterization of humic substances in seawater
Thesis. 1975. Ph.D.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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The hydrothermal alteration of oceanic basalts by seawater
… now exists to support the hypothesis that seawater circulates through freshly intruded basalt at the mid-ocean ridges. As a consequence of this process, reactions between basalt and seawater take place at elevated temperatures. The mineralogy and chemistry of hydrothermally altered pillow …
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Behaviour of massive reinforced concrete sections in seawater
… marked difference between submerged exposures to seawater as opposed to NaCl solution, the unsuitability for accelerated testing with seawater and the likelihood of rapid initiation in offshore structures. Further experimental works through Phases II and III found that although exposed to low …
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Computer modelling of the chemical speciation in seawater
… a computer model of the chemical elements in seawater and to use this model to gain insight into the chemical processes controlling dissolution, precipitation, redox levels and coordinative interactions in surface seawater. In order to accomplish this task a relatively extensive database …
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The hydrothermal alteration of oceanic basalts by seawater.
Thesis. 1977. Ph.D.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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Seawater circulation in coastal aquifers : processes and impacts
… We investigate the mechanisms by which seawater circulates in the subsurface over a range of spatio-temporal scales, and the chemical reactions to which this circulation is coupled. Seawater circulation in coastal aquifers is driven by salinity variations in pore water as well as by the …
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Development of proxy seawater records from gorgonian coral skeletons
… of gorgonians to record the conditions of the seawater in which they grew. <br/>Bermudian shallow water gorgonian colonies (Pseudoplexaura porosa, Plexaurella dichotoma and Plexaurella nutans) were sampled and their axial skeleton structure examined. The periodicity of skeletal banding was …
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Development of Reactor Technology for the Photoelectrolysis of Seawater
… from saline solutions similar to that of seawater. Chlorine is currently formed via an energy intensive electrochemical process with high energy inputs and associated emissions. Using photoelectrochemical applications this can be carried out at lower energy requirements and in a more …
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Electronic automation of a remotely deployable seawater sampling device
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1992.
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An experimental investigation of the surface tension of seawater
Surface tension of seawater was measured for absolute salinities S = (20.01, 35.18, 40.49, 79.39, 121.54) g/kg across a temperature range of T = (0 - 90)°C at atmospheric pressure using the Wilhelmy plate method. The uncertainty within measurements varied between 0.04 - 0.33 mN/m with the average …
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Maximizing the Benefits of Desalinated Seawater Supply for Agricultural Sustainability
… assesses the feasibility of using desalinated seawater for irrigation through a set of integrated investigations spanning infrastructural, agronomic, economic, and institutional dimensions. A case study of the Copiapó Valley in Chile’s Atacama Region provides an empirical anchor for evaluating …
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Electrical resistivity of sandy soil with water, leachates and seawater
… distilled water, tap water, three leachates and seawater. For a landfill system situated near a salt water body, the effects of seawater and seawater-leachate intrusion have also been scrutinized. For the measurement of electrical resistivity for different soil density and contamination …
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