Digital Commons Network^™

Diffusion Studies With Novel Plastics, Marion Toohey Conway

Theses

The rates of diffusion through two fluorinated groups and two non-fluorinated groups of laboratory prepared membranes were compared with each other and with commercially available cellulose membranes. The membranes.were evaluated, in particular, for possible use with the artificial kidney. Diffusion experiments were conducted with sodium chloride, urea and uric acid. Experimental results were compared to diffusion coefficients calculated in the literature for cellulose membranes. The results show that the rates of diffusion of all of the solutes tested for the laboratory prepared membranes are comparable to that of the cellulose membranes. The fluorinated group had a slightly higher diffusion coefficient …

Minimum Reflux In Fractionating Columns : A New And Improved Short-Cut Method, Elizabeth Garcia

Theses

A short-cut method is presented for calculating the minimum, reflux rate for multicomponent systems. This new method is best suited for use on the computer and gives a very accurate estimate of this important factor in the design of fractionating columns. It does so without going to the tedious and time-consuming calculations of the rigorous methods.

The calculation approach is based on a simplification of the Thiele and Geddes method for fractionating columns under minimum reflux conditions.

The program is written in Fortran IV language and was used on an IBM 370 computer. Input specifications include the split of the …

Kinetic Modeling Study Of Catalytic Hydrogenation Of Codimer, William Mounce

Theses

A kinetic modeling study was made on a gas phase catalytic reaction. The data used was that on the hydrogenation of codimer, collected by Tschernitz, et al, The objective was to determine if non-linear least squares regression offers an advantage over linear least squares regression in discriminating between Langmuir. Hinshelwood kinetic equations.

For the experimental data in question, it was found that neither linear nor non-linear regression could distinguish between the two plausible mechanisms. With the particular mechanistic equations and range of data used in this study, the more laborious non-linear analysis offered no advantage over linear regression in discriminating …

A Study Into The Feasibility Of Constructing A Pedestrian Mall In Newark Downtown, Stephen Wesley Warren

Theses

Newark's central business district has been suffering steady economic decline for at least a decade. In an attempt to halt this trend, and perhaps even reverse it, a feasibility study has been conducted toward the goal of implementing a pedestrian mall in the area.

This study was accomplished by conducting both field examinations of Halsey Street, the area under consideration, and investigating data from other existing United States pedestrian malls.

The results of this study show that it is feasible to construct a permanent pedestrian mall on Halsey Street and that the benefits of doing so far outweigh the costs …

A Manual For A Settlement House Or Neighborhood Center, Jeffrey Daly

Theses

None provided.

That's What's Happening: The Evaluation Of Eight Scandinavian Crafts Schools, David Powning

Theses

None provided.

Large Wheel-Thrown Pottery, Eddie Davis

Theses

Not Included

The University Studio, Michael James

Theses

None provided.

To Stuff, Or Not To Stuff, Pamela Manahan

Theses

None provided.

Suspended Forms In Clay, Carol Furioso

Theses

None provided.

The Fine Line, Giorgio Furioso

Theses

None provided.

An Accounting System For The Artist, Designer, And Craftsman, Toby Thompson

Theses

None provided.

Serving Dishes, J. Freimarck

Theses

Not Included

Self-Objectifications, William Dye

Theses

None provided.

Preparation Of Malachite Green Leucocyanide And A Study Of The Effects Of Dye Impurities, Paul Dennis Berg

Theses

Using a modification of a preparation method published by Tobin, Katzakian, and Chisholm, the photochromic leucocyanide of malachite green dye was prepared in a pure form. This leucocyanide was doped with various amounts of the dye as an impurity and the effect of the dye on the photolysis and fade reactions tested.

It was determined that the dye has the effect of merely masking the leucocyanide during photolysis exposure but does chemically increase the completeness of the fade reaction.

Polarities, Barbara A. Smith

Theses

None provided.

Birth: An Interpretation, Gail Vick

Theses

None provided.

A Method Of Determining Dot Sharpness Of Lithographic Films, Timmy Mccreary

Theses

Two methods were attempted to determine an objective evaluation of lithographic films with respect to the sharpness of half-tone dots produced by the films. In Method I a step function target was placed in contact with a continuous wedge and a film sample. After exposure and development, a curve of the film was drawn in terms of per cent transmission versus log exposure. Since the input (target) is a step function, the output (curve) should also be a step function. It was expected that the width of the step in the curve would yield some measure of how well the …

Plastics Combined With Metals In The Production Of Desk Objects, Sharon Church

Theses

None provided.

Big, Grainey Pitchas, Marc Miller

Theses

None provided.

Fast Fourier Transform With Computer Program, James Chapin

Theses

Many computer programs have been developed to calculate the Fast Fourier Transform (FFT). It is the intention of this thesis to develop the tree graph idea, presented by E. 0. Brigham and R. E. Morrow in the article "The fast Fourier transform," into another computer program that will calculate both the forward and inverse Fourier transforms using nonsymmetrical periodic functions. Most of the information obtained was from periodicals with relatively little available in text books. General matrix equations and calculations presented in proofs were developed by this thesis. The tree graph idea was also expanded to a general form. First …

Simulation Of A Single Feed Fractional Distillation Column Using The Thiele-Geddes Procedure, M. S. Abolahrari

Theses

This thesis constitutes a simulation model of a single feed frational distillation column consisting of a single phase distillate, liquid or vapor product, an equilibrium stage reboiler, and a cascade consisting of theoretical equilibrium stages. The model limitations in addition to the single feed and the single phase distillate are 20 identifiable components, and 100 theoretical equilibrium stages. The thermodynamic data required are vapor-liquid equilibrium data and vapor-liquid enthalpy data, both assumed to be correlatable as functions of temperature. Compositional dependence of the thermodynamic data is ignored, but minor pressure variations throughout the cascade can be incorporated into the vapor-liquid …

The Chemistry Of Azides, Edward D. Nelson

Theses

A review of the decomposition of alkyl and aryl azides by thermolysis and photolysis has been accomplished. Organic azides are a very distinct species that undergo its own unique reactions. Azides decompose to form an electron deficient nitrogen having a sextet of elcctrons. This is called a Nitrene. Nitrenes can exist in the singlet or triplet state. The triplet behaves like a diradical. General and specific reactions of nitrenes have been shown with detailed mechanisms accounting for the products. The main modes of nitrene stabilization are rearrangement, hydrogen abstraction and insertion. Insertion is characteristic of singlet species and abstraction characteristic …

The Design, Construction And Evaluation Of A Resolution Target For Microfilming Application, Thomas E. Diosy

Theses

By designing and constructing a new resolution target for microfilming applications, it has been the goal of this thesis to overcome several problems suspected to be associated with existing methods, namely, 1) the problem of pre-knowledge of the test pattern and target array, 2) the ambiguity in determining the smallest "distinguishable" pattern, 3) the possibility of spurious resolution due to periodicity in the test pattern and 4) the lack of correlation with alpha-numeric typefaces.

The new Psi target system was constructed through a series of artwork reductions, paste-ups and further reductions, all on lithographic material.

The Psi target, a system …

Slip And Glaze Application, Barbara Sabbeth

Theses

Not listed.

Ic Design For The Tv Receiver, D. W. Rhee

Theses

Not listed.

Statistical Analysis Of Grain Growth Based On The Frieser-Eger Film On Development Kinetics, Noreen Vredenburg, Sharon Perry

Theses

Data were obtained from the Frieser-Eger1 film on development kinetics for initiation times and for total development times of individual grains (times of complete development) in a lithographic developer and in a hydroquinone developer with normal sulfite level. Approximate areas were computed for each grain. The purpose of this investigation was to compare the process of development at the two sulfite levels and to determine if there is a functional relationship between total development time and grain size. Different relationships were expected for the two types of developers. This data analysis permits a better understanding of the differences between lithographic …

Investigations In Post-Fixation Physical Development, R. Jerry, J. Nelson

Theses

The procedure outlined by Matejec, Photograpische Korrespondenz, 104, 153 (1968), fixation in a thiosulfate-sulfite solution to which AgBr has been added, followed by washing in 1% sulfite solution, and development in a metol-sulfite-AgNO3 developer, was tested on seven silver iodobromide emulsions, each of a different average grain size. Samples were exposed, and processed by chemical and physical development. Matejec’s results, equality of threshold speed with post-fixation physical and chemical development, could only be realized with a very fine grain emulsion and high intensity exposure. It was found that the efficiency of physical development, relative to chemical development, is inversely related …

Relationship Of Preferred Tone Reproduction To Picture Size, David Miller

Theses

A relationship between preferred tone reproduction and final picture size is suggested in many forms in the literature and in practical experience. This project uses photographic halftone prints varying in tone reproduction and produced at different sizes to investigate this relationship. The tone reproduction variations are introduced electronically using an RCA color scanner and a method of eigenvector analysis is used to reduce these tone reproductions down to their important components. The final set of prints consisting of ten tone reproductions, three reproduced sizes, and two sharpnesses are evaluated to determine their subjective quality in the judgement of a group …

A Cost Of Capital And Capital Budgeting Decision Model Related To New, Small, High Technology Corporations, Bruce R. Robinson

Theses

None provided.