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Articles 14101 - 14130 of 16085
Full-Text Articles in Entire DC Network
Mathematical Modeling Of The Formation Of Calcareous Deposits On Cathodically Protected Steel In Seawater, J. F. Yan, T. V. Nguyen, Ralph E. White, R. B. Griffin
Mathematical Modeling Of The Formation Of Calcareous Deposits On Cathodically Protected Steel In Seawater, J. F. Yan, T. V. Nguyen, Ralph E. White, R. B. Griffin
Faculty Publications
A first principle mathematical model of the formation of calcareous deposits on a cathodically protected steel rotatingdisk electrode in seawater is presented. The model includes equations which transport phenomena, electrochemical reactions,precipitation reactions, and a homogeneous reaction involved in the formation of calcareous deposits on an electrodesurface. Predicted concentration profiles show that a high concentration of OH– ions on the electrode surface leads to the formation of calcareous deposits. The calcareous deposits contain mostly CaCO3, but the initial deposits are predicted to contain more Mg(OH)2 than CaCO3. The predicted calcareous deposits on the electrode surface …
Parametric Studies Of The Formation Of Calcareous Deposits On Cathodically Protected Steel In Seawater, J. F. Yan, Ralph E. White, R. B. Griffin
Parametric Studies Of The Formation Of Calcareous Deposits On Cathodically Protected Steel In Seawater, J. F. Yan, Ralph E. White, R. B. Griffin
Faculty Publications
A first principle mathematical model has been used to study the effects of ocean environment and cathodic protection on the formation of calcareous deposits and their ability to reduce the cathodic current density. These parameters include applied potential, rotation speed, temperature, salinity, and depth. The results showed the applied potential strongly influences the formation of calcareous deposits and their ability to reduce the cathodic current density. Among the environmental factors, rotation speed has the most influence on the cathodic current density. Salinity slightly influences the cathodic current density over the range of interest. Temperature is much more influential than salinity …
A Water And Heat Management Model For Proton-Exchange-Membrane Fuel Cells, Trung V. Nguyen, Ralph E. White
A Water And Heat Management Model For Proton-Exchange-Membrane Fuel Cells, Trung V. Nguyen, Ralph E. White
Faculty Publications
Proper water and heat management are essential for obtaining high-power-density performance at high energy efficiency for proton-exchange-membrane fuel cells. A water and heat management model was developed and used to investigate the effectiveness of various humidification designs. The model accounts for water transport across the membrane by electro-osmosis and diffusion, heat transfer from the solid phase to the gas phase and latent heat associated with water evaporation and condensation in the flow channels. Results from the model showed that at high current densities (> 1 A/cm2) ohmic loss in the membrane accounts for a large fraction of the …
A Work Of Genius James Hogg's Justified Sinner, Lain Crichton Smith
A Work Of Genius James Hogg's Justified Sinner, Lain Crichton Smith
Studies in Scottish Literature
No abstract provided.
The War Rhymes Of Robert Service, Folk Poet, Edward J. Cowan
The War Rhymes Of Robert Service, Folk Poet, Edward J. Cowan
Studies in Scottish Literature
No abstract provided.
Concerning Sir Gilbert Hay, The Authorship Of Alexander The Conquerour And The Buik Of Alexander, Matthew P. Mcdiarmid
Concerning Sir Gilbert Hay, The Authorship Of Alexander The Conquerour And The Buik Of Alexander, Matthew P. Mcdiarmid
Studies in Scottish Literature
No abstract provided.
"A Double Word": Writing And Justice In The Master Of Ballantrae, Alexander B. Clunas
"A Double Word": Writing And Justice In The Master Of Ballantrae, Alexander B. Clunas
Studies in Scottish Literature
No abstract provided.
Robert Louis Stevenson - The Secret Sources, David Angus
Robert Louis Stevenson - The Secret Sources, David Angus
Studies in Scottish Literature
No abstract provided.
Talking To The People: A Reflection On Recent Glasgow Fiction, Keith Dixon
Talking To The People: A Reflection On Recent Glasgow Fiction, Keith Dixon
Studies in Scottish Literature
No abstract provided.
The Intertextual Cresseida: Chaucer's Henryson Or Henryson's Chaucer?, Melvin Storm
The Intertextual Cresseida: Chaucer's Henryson Or Henryson's Chaucer?, Melvin Storm
Studies in Scottish Literature
No abstract provided.
Scott's Influence On Hawthorne, Will Stephenson, Mimosa Stephenson
Scott's Influence On Hawthorne, Will Stephenson, Mimosa Stephenson
Studies in Scottish Literature
No abstract provided.
"They Must Worship Industry Or Starve": Scottish Resistance To British Imperialism In Gunn's The Silver Darlings, Sherrie A. Inness
"They Must Worship Industry Or Starve": Scottish Resistance To British Imperialism In Gunn's The Silver Darlings, Sherrie A. Inness
Studies in Scottish Literature
No abstract provided.
The Seven Deeds Of Honour And Their Crowns: Lydgate And A Late Fifteenth-Century Scots Chivalric Treatise, L. A. J. R. Houwen
The Seven Deeds Of Honour And Their Crowns: Lydgate And A Late Fifteenth-Century Scots Chivalric Treatise, L. A. J. R. Houwen
Studies in Scottish Literature
No abstract provided.
Ambiguity And The Dreams In James Hogg's The Private Memoirs And Confessions Of A Justified Sinner, Jonathan C. Glance
Ambiguity And The Dreams In James Hogg's The Private Memoirs And Confessions Of A Justified Sinner, Jonathan C. Glance
Studies in Scottish Literature
No abstract provided.
Bakhtin At Christ's Kirk: Carnival And The Scottish Renaissance, Christopher Whyte
Bakhtin At Christ's Kirk: Carnival And The Scottish Renaissance, Christopher Whyte
Studies in Scottish Literature
No abstract provided.
Scottish Poetry 1990-1991, Alasdair D. F. Macrae
Scottish Poetry 1990-1991, Alasdair D. F. Macrae
Studies in Scottish Literature
No abstract provided.
Surface Treatment For Mitigation Of Hydrogen Absorption And Penetration Into Aisi 4340 Steel, G. Zheng, Branko N. Popov, Ralph E. White
Surface Treatment For Mitigation Of Hydrogen Absorption And Penetration Into Aisi 4340 Steel, G. Zheng, Branko N. Popov, Ralph E. White
Faculty Publications
The effectiveness of underpotential deposition of Pb onto a membrane made of AISI 4340 steel on the reduction of the hydrogen evolution reaction on the membrane and the degree of hydrogen ingress into the membrane was determined. In the presence of a monolayer coverage of Pb on the membrane surface, the hydrogen evolution currents were reduced by a factor of two compared with the values obtained on bare steel, and the steady-state hydrogen permeation flux through the steel membranes was reduced by 71%.
Impedance Spectroscopy As A Nondestructive Health Interrogation Tool For Lithium-Bcx Cells, Branko N. Popov, W. Zhang, E. C. Darcy, Ralph E. White
Impedance Spectroscopy As A Nondestructive Health Interrogation Tool For Lithium-Bcx Cells, Branko N. Popov, W. Zhang, E. C. Darcy, Ralph E. White
Faculty Publications
The objective of this investigation was to study the growth of thick passivating layers on the Li anode in Li/BCX(Li/SOCl2 + BrCl) cells which were stored for a period of 3 years. Impedance spectroscopy and equivalent circuit models were used to determine characterizing parameters for these cells. The equivalent circuit used for virgin cells includes a faradic contribution and diffusion of the electroactive species. The equivalent circuit for batteries stored 1 or 2 years includes the impedance of a metal/passive film interface, the resistance of the film, and the impedance of the passivating film/electrolyte interface. The equivalent circuit used …
Using Electrochemical Impedance Spectroscopy As A Tool For Organic Coating Solute Saturation Monitoring, Branko N. Popov, Mohammed A. Alwohaibi, Ralph E. White
Using Electrochemical Impedance Spectroscopy As A Tool For Organic Coating Solute Saturation Monitoring, Branko N. Popov, Mohammed A. Alwohaibi, Ralph E. White
Faculty Publications
Electrochemical impedance spectroscopy (EIS) has been used to study the solute uptake for epoxy/phenolic (E/p) andepoxy/amine (E/a) thick-coated mild steel samples immersed for 160 days in 3.5 weight percent NaCl solution exposed to air. Samples with thicknesses of approximately 200 µm with an exposed surface area of 22.6 cm2 were used to follow solute saturation of the organic coating. Good agreement was obtained between the calculated and measured coating capacitance when, according to the diffusion equation, the coating capacitance was plotted against exposure time.
Galvanostatic Pulse And Pulse Reverse Plating Of Nickel-Iron Alloys From Electrolytes Containing Organic Compounds On A Rotating Disk Electrode, Branko N. Popov, Ken-Ming Yin, Ralph E. White
Galvanostatic Pulse And Pulse Reverse Plating Of Nickel-Iron Alloys From Electrolytes Containing Organic Compounds On A Rotating Disk Electrode, Branko N. Popov, Ken-Ming Yin, Ralph E. White
Faculty Publications
Linear sweep voltammetry, galvanostatic pulse, and pulse reverse techniques were used to study the plating of nickel-iron alloys in the presence of organic additives. The effects of pulse current densities, ip, reverse current densities, ir, rotation speed of disk electrode, and the presence of organic additives on deposition of nickel-iron alloys are evaluated. The observed phenomena can be explained by the concentration depletion of reactants (or products), and the surface coverage of the additives on the electrode. A new formulation of the plating bath is defined.
Impedance Analysis For Oxygen Reduction In A Lithium Carbonate Melt: Effects Of Partial Pressure Of Carbon Dioxide And Temperature, Bhasker B. Dave, Ralph E. White, Supramaniam Srinivasan, A. John Appleby
Impedance Analysis For Oxygen Reduction In A Lithium Carbonate Melt: Effects Of Partial Pressure Of Carbon Dioxide And Temperature, Bhasker B. Dave, Ralph E. White, Supramaniam Srinivasan, A. John Appleby
Faculty Publications
Effects of partial pressure of carbon dioxide and temperature on oxygen reduction kinetics on a gold electrode in a lithium carbonate melt were examined using electrochemical impedance spectroscopic (EIS) and linear sweep voltammetric techniques. The impedance spectra were analyzed by a complex nonlinear least squares method, using the Randles-Ershler equivalent circuit model, to determine the electrode-kinetic and the mass-transfer parameters such as the charge-transfer resistance and the Warburg coefficient. The cyclic voltammetric measurements indicated that the oxygen reduction process in lithium carbonate melt is "reversible" up to 200 mV/s. The product DC0 determined by cyclic voltammetry agreed well …
Thermal Analysis Of Spirally Wound Li/Bcx And Li/Socl2 Cells, E. E. Kalu, Ralph E. White
Thermal Analysis Of Spirally Wound Li/Bcx And Li/Socl2 Cells, E. E. Kalu, Ralph E. White
Faculty Publications
A thermal analysis of Li/BCX and high rate Li/SOCl2 cells is presented. The thermal model developed was used to study the effect of ambient temperature of discharge (0–40°C) on Li/BCX cells discharged at the same rate. The model predictions show that ambient temperature of discharge was critical in thermal management of the cell. For forced convection cooled cells, the model predicted that ambient temperature near room temperature (25°C) was required to achieve the lowest maximum temperature rise in the cell. Inclusion of the effects of reaction products to the model predictions showed that a constant composition assumption may be …
On Editing Macdiarmid's Complete Poems, W. R. Aitken
On Editing Macdiarmid's Complete Poems, W. R. Aitken
Studies in Scottish Literature
No abstract provided.
December 2, 1992 Faculty Senate Minutes, University Of South Carolina
December 2, 1992 Faculty Senate Minutes, University Of South Carolina
Faculty Senate
No abstract provided.
November 4, 1992 Faculty Senate Minutes, University Of South Carolina
November 4, 1992 Faculty Senate Minutes, University Of South Carolina
Faculty Senate
No abstract provided.
Labeling Graphs With A Condition At Distance 2, Jerrold R. Griggs, Roger K. Yeh
Labeling Graphs With A Condition At Distance 2, Jerrold R. Griggs, Roger K. Yeh
Faculty Publications
No abstract provided.