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 78 for “"salt water"”.
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Salt water: simply vital
… whether or not two molecules dissolved in water will bind together, but using Schrodinger’s equation to do this can be beyond the powers of even the hugest supercomputer.
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Analysis and occurrence of disinfection by-products in fresh and salt water
… trihalomethanes, and bromate are important toxic water disinfection by-products (DBPs) that the US Environmental Protection Agency (USEPA) regulates in drinking water. Iodoacetic acids and halonitromethanes (HNMs) are the unregulated emerging DBPs that have been recently found in the disinfected …
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Fatigue and corrosion fatigue in oil and salt water under hydrostatic pressure
Includes bibliographical references (pages 118-123).
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Studies on Holkham salts hole : an isolated salt water community with relict features
… hydrography of this pond, known locally as the Salts Hole. The nature of the substratum,changes in salinity, temperature and other physical variables have been assessed and from these it has been possible to establish that conditions within the pond are remarkably stable. The fauna is reviewed …
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Molecular Dynamics of Interfacial Phenomena at Air/ice, Air/water, and Air/salt Water Interfaces
… oxygen species (ROSs) on atmospheric air/water and air/ice interfaces. In another series of projects, we studied several intermediate and semi-volatile organic compounds from oil (IVOCs and SVOCs, e.g., alkanes with 17-31 carbon atoms), surfactants and dispersants at air/salt water …
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An experimental study of the fluxes of reduced sulfur gases from a salt water marsh
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1983.
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Effects of bed roughness on the concentration of suspended clay in a salt water flow.
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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The corrosion fatigue behavior of notched 2024-T351 aluminum
… behavior of aluminum alloy 2024-T351 in 3% salt solution. Notched characteristics of aluminum alloy 2024-T351 were found to be the same as those of other high strength aluminum alloys. Triaxiality and stress concentration were the main factors in determination of the notch characteristics. A …
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Corrosion Behaviors of Coated Aluminum Alloys in Simulated Corrosive Environment
… specifically, hydrodynamic flow, immersion in salt water and DI water, varying temperatures, and simulated sun light. The hydrodynamic conditions were simulated using a rotating cylinder electrode (RCE) with rotational speeds of 200, 400, 600, 800, and 1000 rpm. The immersion in saltwater and …
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Intrusão salina em aquíferos costeiros: uma análise pelo Método de Elementos de Contorno
The need of great quantity of water of good quality has led to a considerable increase in the volume of pumped groundwater. An important groundwater problem is salt water intrusion that may be defined as the landward movement of seawater interface. Intrusion can result from excessive pumping in …
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Effects of soil amendments on crusting, seedling emergence and yield of onion, tomatoes and peppers.
… Cu, Zn and Fe levels. In a field study using two water qualities at Safford, gypsum produced the most tomato seedlings whereas Al₂(SO₄)₃ and H₂SO₄ produced the least. Onion stand counts were not affected by the chemicals with either water. Gypsum, H₂SO₄ and Al₂(SO₄)₃ polymer produced the highest …
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The use of turbulent jets to destratify the Charles River Basin
… Cambridge. The basin is currently filled with salt water that intrudes from the downstream dam and the resulting vertical density gradients inhibit mixing, leading to low levels of dissolved oxygen at depth. A physical model was scaled to a portion of this basin and salt water was used to …
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A radiocarbon method and multi-tracer approach to quantifying groundwater discharge to coastal waters
Groundwater discharge into estuaries and the coastal ocean is an important mechanism for the transport of dissolved chemical species to coastal waters. Because many dissolved species are present in groundwater in concentrations that are orders of magnitude higher than typical river concentrations, …
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Polonium-210 radioactivity in Lake Mead fish
… of {dollar}\sp{210}{dollar}Po in fresh-water fish compared to salt-water, although the visceral organs were not analyzed. This hypothesis was tested for its generality by analyzing various fish from Lake Mead. Studies of polonium are useful because the man-made radioactive plutonium is …
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Analyses Of Pultruded Polyester/ E-Glass Composites Subjected To Environmental Degradation
… UV, bleach, hydrochloric acid, distilled water at 125â°f, and room temperature salt water. Three-point flexural bending and short beam strength tests were undertaken to determine the effects these environments would have on the composite when compared with the strengths of an unaged …
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Erosion-corrosion resistance of tungsten carbide hard metals with different binder compositions
… designed laboratory rig in both tap and salt water using silica sand as an erodent. The synergistic action of erosion and corrosion on WC hard metals results in greatly enhanced wear rates compared to either erosion or corrosion processes alone. Cemented carbides with a 1 0 wt% binder …
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Maximizing profits for a commercial salmon rearing facility using linear programming
… started in each year and the number of fresh water ponds and salt water pens to construct in each time interval. Constraints are the volumes of facilities required and provided. Cost constraints are included. The model provides the best course of action for facilities expansion based on …
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The response of wetlands to sea level rise: Ecologic, paleoecologic, and taphonomic models
… Foraminiferal assemblages delineate salt to brackish marsh environments, but are absent in fresh marsh sediments. Ostracodes and diatoms occur in all marsh types, but ostracodes are sporadically preserved and diatom thanatocoenoses from different environments become too similar to …
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Developing hydrodynamic sensing capabilities for fish-like robots
… harbour security, they withstand high pressures, salt water and rough conditions to provide information and manipulation capabilities. Biomimetic, fish-like robots offer the possibility of silent, agile and energy-efficient locomotion in this domain. To realize their potential of swimming like a …
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