Digital Commons Network^™

Effect Of Dissolved Water On Physical Properties Of Silver Borate Glasses, E Richard Reynolds

Masters Theses

"The effect of dissolved water on borate glasses containing 4-20 mol % Ag₂O was investigated. Water was dissolved in the glasses by bubbling with a carrier gas (oxygen) containing different partial pressures of water vapor. A minimum in water solubility was found at 11 mol % Ag₂O. Water contents in excess of 0.5 mol % H₂O did not have a great effect on the transition temperature or the dilatometric softening point. Below 15 mol % Ag₂O, the water content had no effect on the thermal expansion coefficients. Beyond 15 mol % Ag …

Computer Analysis Of 3-Phase Induction Motor Operation On An Open-Delta Distribution System, S. Clark Seematter

Masters Theses

"Open-delta/open-delta and open-wye/open-delta transformer banks are often used as an economic means of supplying simultaneous single-phase and 3-phase loads. If the 3-phase load is an induction motor and if these banks are used, the inherent voltage unbalance causes increased losses and uneven heating that may lead to motor failure. Two previously published theories are used to predict motor heating that is caused by the unbalanced voltages and the motor derating that is necessary to prevent insulation failure"--Abstract, page ii.

Flow Field And Heat Transfer For Developing Flow Of Molten Glass In A Duct, Russell Ralph Beckmeyer

Masters Theses

"The molten glass flow (temperature range 1300 to 1500°C) in the entrance region of a duct was investigated with numerical methods. The mathematical model was restricted by assuming: (1) two dimensional, steady state, (2) Newtonian fluid, variable viscosity, and (3) Rosseland approximation. In addition, appropriate use was made of the fact that the Reynolds number is small and the Eckert number is very small. The inclusion of temperature dependent viscosity and a Rosseland approximation for radiation produced from the mass, momentum, and energy equations a system of coupled, nonlinear, partial differential equations which were solved by an iterative finite difference …

Magnetostrictive Aftereffects In A Dilute 50fe-50ni-C Alloy, Raj N. Master

Masters Theses

"Crystallographically equivalent interstitial sites are energetically equivalent when the host crystal is free of any fields. This situation is shown in Fig. Pl from which it may be appreciated that the difference of the free energy of the "crystal" with an interstitial "I" located in "x" and "y" sites, respectively, is equal to zero. This energy equivalence of the various interstitial sites is destroyed when the host crystal is subjected to fields such as strain fields, magnetization fields or a combination of both as may be appreciated from Figs. P2 through P4. In this case, the interstitials will preferentially occupy …

Comparison Of Scatter Storage Techniques Using An Analysis Of Variance Model, Robert Lee Kitsch

Masters Theses

"An analysis of variance model is developed to determine if a significant difference exists between various scatter storage techniques. The model is a two-factor hierarchical mixed design with each combination of transformation and search method considered as a treatment. The data used in the analysis is obtained from a computer program which provides statistics on the number of probes needed to load the (k+l)st item into a table for the different treatments. An ANOVA table was then computed for various load factors.

A significant difference among the treatments was detected for load factors above .4. Comparison of individual treatments using …

A Study On Two Iodine Containing Peptides Isolated From Porcine Thyroglobulin, Frederick E. Bishop Jr.

Masters Theses

"Two iodopeptides were isolated from thyroglobulin that had been digested with trypsin by paper electrophoresis and paper chromatography. The amino acid analysis demonstrated that the amino acid compositions were similar. The N-terminal amino acid of both iodopeptides was shown to be leucine. The amino acid sequence of one of the iodopeptides was determined by the Edman degradation method and digestion with the enzyme Carboxypeptidase A. The sequence was shown to be: NH₂-Leu-Asn-Ala-Ser-Glu-MIT-Gly-Thr-Ser-Gly-COOH. Other workers have shown that synthetic tyrosyl peptides with the sequence Glu-Tyr are iodinated by the thyroid peroxidase enzyme with a greater specificity than other tyrosyl peptides. This …

Laboratory Evaluation Of Dynamic Soil Properties By Ultrasonic Testing Methods, Ronald Maurice Eckelkamp

Masters Theses

"Measurement of ultrasonic compression and shear wave velocities through a soil material has been made with a pulse wave generator developed at the University of Missouri-Rolla. The variation of these velocities along with the behavior of the dynamic material parameters of the material (Young's modulus, shear modulus, Poisson's ratio) with void ratio and degree of saturation were determined. Compression wave velocity, shear wave velocity, Young's modulus and shear modulus were found to decrease with increasing void ratio; degree of saturation was of little influence. Wave attenuation could not be measured by the test procedure used"--Abstract, page ii.

Transformer Connection Study For 138 Kv To 12.47 Kv Substations Of The Union Electric Company St. Louis, Missouri, John Glenn Walsh

Masters Theses

"This thesis examines the transformer connections that can be used in the new 138-12.47 kV substations on the Union Electric power system. The object is to determine if a zero phase shift transformer without a delta connected tertiary winding can be used and economically justified. Traditionally a delta winding has been automatically included for this application without taking engineering time and effort to study all ramifications including possible dollar savings available with other connections. Three transformer manufacturers supplied technical and cost data which are analyzed, based on Union Electric system conditions. Consideration of relaying, harmonics and unbalanced loading shows that …

Diurnal Solar Heating And Cooling Of A Water Reservoir, Stephen Patrick Lepper

Masters Theses

"The transient diurnal heating of a water reservoir by solar radiation; and its cooling by surface convection, evaporation, and radiation emission was analytically modeled. The directional and spectral properties of the incident solar radiation, the air-water interface, and the selective attenuation of radiant energy by the water were properly included in the analysis. The diurnal vertical temperature distribution was predicted by numerically solving the energy equation using a finite difference technique. It was determined that the surface boundary conditions and the selective absorption of radiant energy by the water strongly influence the thermal stratification of stagnant water.

The diurnal compensating …

Interpretation Of Imagery Lineations, Logan Creek Area, Southeast Missouri, Gregory Paul Smith

Masters Theses

"Depletion of ore in Missouri's old lead districts and the opening of the state's new lead district adds impetus to understanding and delineating geologic structure in and adjacent to the new lead district. Image and geomorphic analysis, hydrologic data, and subsurface structural contour mapping are used in interpretation of geologic structure in Dent, Shannon, Reynolds, and Carter counties, Missouri. Unlike the time consuming surface geologic mapping, the modes of investigation used in this study enabled the writer to make a larger, regional-scale study with results comparable to those attainable by surface mapping. The area is covered by thick residual soils …

An Investigation Of The Relationship Between Oral Panendoscopic Evaluations Of Velopharyngeal Physiology And Perceived Listener Judgments Of Hypernasality, Earl J. Seaver

Masters Theses

No abstract provided.

Differentiating Phonemic And Spectrografhic Speech Characteristics Of Daf Susceptibility, Peter J. Alfonso

Masters Theses

No abstract provided.

Concept Acquisition As A Function Of Two Verbal Training Sequences: Nonvocal-Vocal And Vocal-Nonvocal, Kim Thomas Pisor

Masters Theses

No abstract provided.

Racial Integration And Educational Policy In Kenya, Suhashni Datta

Masters Theses

No abstract provided.

A Floral Survey Of The Lake Michigan College- Ross Property, Van Buren County, Michigan, William Monroe Knott

Masters Theses

No abstract provided.

A Measure Of The Differential Effects Of Two Language Training Sequences: Expressive-Receptive And Receptive-Expressive, Melbourne Frank Hovell

Masters Theses

No abstract provided.

Assimilation Of Chinese Families In Kalamazoo, Michigan, Lily Shu-Hong Sun

Masters Theses

No abstract provided.

Parent Training: A Critical Review And Analysis, Mara Sapon Shevin

Masters Theses

No abstract provided.

An Examination Of Countervailing Forces In Canadian Foreign Policy, James F. Hettinger

Masters Theses

Preface

Prime Minister Pierre Trudeau pointed out in 1968 that some seventy percent of Canadian foreign policy is directly affected by the relationship of Canada and the United States. Trudeau expressed hope that ways could be found to derive maximum independence from the remaining thirty percent. At the same time, Trudeau pointed out the need to decrease the presence of the United States in Canada's foreign policy. One of the ways Trudeau proposed to meet these objectives was the expanded use of countervailing forces. Since the time of this statement, Trudeau has turned words to actions, seeking a wider diversification …

A Classification And Review Of Group Contingency Procedures Used In Educational Settings, Lois M. De Mersseman

Masters Theses

No abstract provided.

The Questionable Moral Value Of Major Characters In The Later Works Of Henry James, Joseph R. Fiore

Masters Theses

Chapter I: Introduction

As human beings, when we cannot see clearly into the workings of life, we call it ambiguous--and rightly so. Judgment of our own behavior and that of others is always suspect. We have a tendency to label this person as "good" or that act as "evil," but there should always be a certain amount of uncertainty as to whether or not our perceptions and our ensuing judgments are correct. Those of us who are literature have also, by habit, come to look at literature as reflecting the same standards of right and wrong, of good and evil. …

Celibacy And The Gregorian Reform, Raymond M. Rademacher

Masters Theses

Included in the Gregorian Reform of the eleventh century was the clerical discipline of celibacy. Even though celibacy was not a new discipline at that time, Pope Gregory VII vigorously enforced the canons on celibacy. In a matter of such intimacy there was bound to be opposition to the enforcement of these canons. Tradition offered ample support to both parties of the conflict. The long standing tradition of married clergy served as a strong support to those who opposed the Gregorian enforcement. However, the traditional canons in favor of celibacy gave impetus to the reformers of the eleventh century.

Pope …

A Study To Determine The Effectiveness Of An Interest Grouping Classification For Primary Grade Children, Dianne T. Mcafee Williams

Masters Theses

The purpose was to determine if a subject arrangement of easy fiction books, based on the interests of primary-grade children, and denoted by picture symbols, would make the students more satisfied with, and independent in, their book selections, as compared to an author arrangement of easy fiction books.

The study was divided into two parts, the former dealing with the author arrangement and the latter dealing with the subject arrangement. Tally sheets of student subject requests were kept by the librarian in a comparison of the two arrangements. Followup included questionnaires to primary grade teachers and librarian, and interviews with …

Quantitative Overdesign By Stochastic Simulation, Raymond A. Freeman

Masters Theses

"The determination of overdesign, or safety, factors for industrial processes is an art acquired by the engineer through experience. In general, safety factors are increased as the uncertainty of the process variable increases; a procedure that can be expensive if safety factors are specified too small or too large. A single release of harmful substances from pollution control installations may cause irreparable damage. Likewise, the production of an off specification product by a chemical process costs money and resources. These facilities must often be designed for widely fluctuating flow rates, compositions, temperatures, and etc. Consequently, the selection of the proper …

Adsorption Of Water On Gold, Jean-Marc Louis Deschanel

Masters Theses

"Water adsorption isotherms on gold films were measured with a quartz crystal microbalance. Two gold films were studied: a "dirty" gold film contaminated by approximately one monolayer of carbon, and a "clean" gold film prepared by evaporating gold from a heated tungsten wire under high vacuum.

Water was found to chemisorb on both films according to a Freundlich type adsorption isotherm. Isosteric heats of adsorption were computed from the isotherm data. On the "clean" gold surface the isosteric heat showed a logarithmic decrease with increasing water coverage. The highest measured value for the heat of adsorption was 35 kcal mole …

Treatment Of A Pharmaceutical Waste With The Anaerobic Filter, Norman Dale Dennis Jr.

Masters Theses

"The anaerobic filter is essentially a plug-flow, packed-bed, column type reactor in which the anaerobic bacteria responsible for the waste stabilization are attached to the filter media. This process is a relatively new concept in waste treatment which has been used only in laboratory studies. The objective of this study was to evaluate anaerobic filter performance when used to treat an actual industrial waste under controlled conditions of flow rate, organic strength and temperature.

Four 0.5 cu ft (14.25 l) laboratory filters were operated for 180 days at 35° C using a pharmaceutical waste as the substrate. By varying influent …

On The Complex Index Of Refraction Of Bulk Materials, Carol Jeanne Warren

Masters Theses

"As a part of the investigation of classical reflectance, it is determined that the hemispherical reflectance for a material with a particular pair of optical constants can be approximated by computing the angular reflectance at sixty degrees, using Fresnel's generalized reflectance formulas.

Reflection methods for the purpose of determining the optical constants of a variety of materials are discussed. The unpolarized reflectance versus angle of incidence technique is used for determination of the optical constants of bulk solids. Restrictions on the simultaneous solution of the Fresnel equations are determined and a computer program is developed to compute values necessary to …

Optimal Synthesis Of Active Distributed Rc Low-Pass Filters, Robert Iman Egbert

Masters Theses

"Although synthesis procedures for active distributed RC networks are well developed, the approximation problem is largely unsolved. Previously proposed solutions have several disadvantages. A better solution to the approximation problem is obtained by developing an error expression involving the difference between the ideal specification and the exact realization, then minimizing this error by numerical techniques. The method is illustrated by designing a set of active distributed RC low-pass filters"--Abstract, page ii.

Heavy Metal Analysis Of Stream Sediments In The James River Basin, Missouri, William J. Head

Masters Theses

"A reconnaissance survey of stream sediments using the minus 80 mesh sieve fraction was made at 53 sites throughout the James River basin, Missouri. Sample sites within the 1460 square miles of the basin were chosen at tributary confluences, suspected contamination sources, and known areas of mineralization. Replicates and stream profiles were taken to check for analytical variation and reproducibility of results. Sediment samples were prepared by a hot nitric acid leach method. The sediments were analyzed using an atomic absorption unit to determine Cu, Pb, Zn, and Cd trace metal contents.

Values of selected streams within the basin were …

Disposal Of Cattle Feedlot Wastes By Anaerobic Digestion, Eric Bayard Rapp

Masters Theses

"Disposal of animal waste represents a severe environmental problem, particularly in areas such as cattle feedlots where livestock are concentrated. Animal waste can be converted to carbon dioxide and methane by the autocatalytic process of anaerobic fermentation. A scheme, based upon this process, for the disposal of the waste from two different size feedlots is presented. The design of this process is based on kinetic data from the literature which are fitted to a kinetic model including diffusional resistances. Economic calculations based upon available cost data are made to determine the profitability of the process. Economic evaluations indicate that this …