Physical Sciences and Mathematics Commons^™

Hydrology Of The Sinking Creek System, Logan And Simpson Counties, Kentucky, James C. Cubbage

Masters Theses & Specialist Projects

Southwest of Bowling Green, Kentucky, is the Western Pennyroyal, is a karstified area which has been neglected in the study of its ground water. About 100 square miles near Adairville were chosen for analysis to help rectify this lack of knowledge. The area is dominated by Sinking Creek, a surface-subsurface drainage system.

The main purpose of the study was to map the underground flow in the Sinking Creek area. The drainage system seemed to be typical for the Western Pennyroyal and exhibited many similarities to flow paths known in the Central Kentucky Karst.

The investigation proved to be of basic …

The Anodic Stripping Voltammetry Determination Of Trace Elements In Coal Ash, Jesus Montoya

Masters Theses & Specialist Projects

The application of anodic stripping voltammetry (ASV) to the determination of several trace metals in coal ash was studied.

An ashing and ash digestion method was developed which limited the total salt and acid concentration of the analyte solutions, a necessary step for routine analysis. The simultaneous determination of cadmium, copper, lead, and zinc in eight Pennsylvania State University Coal Bank Samples and in the National Bureau of Standards SRM 1632a coal sample were made. Chromium was separated from the prepared coal ash solutions and determined independently in the form of chromate(VI).

All values determined by ASV methods were in …

Cyclic Voltametry Studies Of Various Ylide Metallocenes, Mark Mojesky

Masters Theses & Specialist Projects

The redox potentials of [Fe(CpSMe₂)₂]²⁺ (CpSMe₂= dimethysulfoniumcyclopentadienflide), [Ni(CpSMe₂)₂]²⁺, [Co(CpSMe₂)₂]²⁺, [Mn(CpSMe₂)₂]²⁺, (CpPPh₃)HgBr₂ (CpPPh₃= triphenylphosphoniumcyclopentadienylide), (CpPPh₃)HgCl₂, and MoPC (PC = phthalocyanine) were examined using cyclic voltammetry (CV). The experimentation was carried out in a temperature controlled environment. With the exception of the mercury and molybdenum complexes, the solvent system consisted of 15 milliliter mixture of acetonitrile and water. Due to the solubility problems of the mercury bromide complex, …

The Anodic Stripping Voltammetric Analysis Of Chromium Using The Hanging Mercury Drop Electrode, John Fugate

Masters Theses & Specialist Projects

The Hanging Mercury Drop Electrode (HMDE) is used in the anodic stripping analysis of ppm concentrations of chromium. The effects of such parameters as ionic strength, polymeric film formation, and the use of the chromate-sodium acetate standard are interpreted in terms of the electro-chemical and physical properties of chromium in the +3 and +6 oxidation states.

A Numerical Investigation Of A Certain One-Dimensional Ising Model, Jimmy Green

Masters Theses & Specialist Projects

The model is a linear chain in which each spin interacts with its 2r nearest neighbors, the interaction energy being proportional to 1/r. Using a method similar to that of Montroll, the partition function of the model in the thermodynamic limit is shown to be related to the largest eigenvalue of a certain matrix. The largest eigenvalue of the matrix is determined numerically for 3 < r < 12.

Also, a correct method is demonstrated for evaluating an improper limit of the model, in which the interaction range is set to the chain length before the limit of an infinite number of spins is …