Digital Commons Network^™

Electrolytic Polishing Of Copper And Nickel Silver, Halle Abrams

Theses

To facilitate the study of surface conditions on ultrasonic weldability, electrolytic polishing was used to obtain four types of surfaces on copper and nickel silver (alloy D). A500 orthophosphoric acid bath was used, and the necessary operating conditions to obtain these surfaces were established. In accordance with current electrolytic polishing theory, the existence of the anode viscous layer and anode surface film was observed, and their role in the polishing process is discussed. By means of metallurgical techniques and surface profile measurements, it is shown that the four types of surfaces are significantly different, and good reproducibility of these surfaces …

The Influence Of Materials In Furniture Design, Timothy Butler

Theses

Not Included

Design In Clay For Architecture, Leon I. Nigrosh

Theses

None provided.

Metal Fusion And Granulation, John Ware

Theses

None provided.

Use Of Borohydride To Determine The Difference In The Developable Density For A Chemically Sensitized And Non-Sensitized Emulsion., S. Laufer, R. Golembe

Theses

An emulsion prepared so as to minimize the effect of any chemical action on the grains was in its "primitive" state, i.e., that no chemical sensitizing had occurred during the formation of the emulsion grains in "inert" gelatin. Another emulsion was made so as to maximize the effect of any chemical action on the grains by chemical sensitizing methods. This emulsion was also prepared in "inert" gelatin. Sodium Borohydride was added at various levels of concentration to chemically fog both emulsions. The developable density was measured. Also, an attempt was made to measure the amount of reduction sensitization occurring if …

The Effect Of Turbid Water In The Optical Path Of A Photographic System On The Modulation Transfer Function Of That System, G. Fulmer, Harvey Greenberg

Theses

Various levels of a turbid suspension were introduced into a specially constructed tank and photographs of a variable transmittance sinusoidal object containing a step tablet were taken. The resulting images were processed and measured on a micro-densitometer to obtain the modulation transfer functions of the system. Results indicate that with increasing turbidity there is a speed loss, increased flare or reduced contrast, and decreasing modulation transfer functions. The increasing flare is not the only factor causing the demodulation of the underwater images.

An Experimental Apparatus For Measuring The Relative Illumination Of Finite Conjugate Lenses, Claude Fedele, Leo Neumann

Theses

The apparatus described is designed to measure relative illumination of finite conjugate lenses with comparable accuracy and reliability than existing methods and provides a graphical output with less time expended for data acquisition. An opto-mechanical scanning system is utilized for transmitting light pulses from known image field positions to a photomultiplier tube. The light pulses are transmitted to the phototube via an optical system consisting of an array of lucite rods (light pipes) positioned in the image plane of the lens under test. The rods terminate at a cylindrical housing which contains a rotating lens prism assembly which scans the …

A Technique For Analyzing The Paper Fiber Accumulation On The Blanket Of A Web Offset Press, John M. Scott

Theses

None provided.

The Effects Of Temperature, Exposure, And Development Time On Polaroid Color Film, Dale Farkas

Theses

None provided.

Feasibility Study Of Direct Electron Recording Target Systems, Gaylord A. Helgeson

Theses

Not Included

Fugacity Coefficients Of Gases In Binary Mixtures, David Albin Olson

Theses

A proposed, method of Joffe for determining fugacity coefficients of gases In binary mixtures is presented. The method is evaluated by calculating 320 pairs of fugacity coefficients and comparing the results with experimental data and with values calculated by the method of Pitzer.

Joffe derived the expression for fugacity coefficients by employing the technique of Gamson and Watson. The expression is based on the three-parameter corresponding states principle as previously presented by Pitzer and a proposed definition of the pseudocritical properties.

The method of Pitzer and the proposed method of Joffe both require the same data.

This study is based …

A Wrestling Program For High School Physical Education, Sam N. Black

Theses

This thesis examines the information needed by teachers to plan and teach wrestling at the high school level, including objectives of a wrestling program, class organization, methods of instruction and evaluation, facilities and equipment needed, and specific wrestling maneuvers and skills.

Fiber Glass Methods For Furniture, Donald Bjorkman

Theses

Not listed.

Lighted Ceramic Garden Sculptures, John Thomas Forgey

Theses

Not Included

Density Variation And Spread Of The Printed Halftone Dot In Offset Lithography, Walter L. Covington, William L. Heaps

Theses

No detectable functional relationship was found between dot area and dot density within a solid ink density and paper combination over a 65 to 300 line screen range.

Dot spread, measured as per cent difference from the per cent dot value of the half tone negative, was found to be more significant in the midtones and the 300 line screen was observed to increase spread appreciably as well as variability with tints.

An Experimental Study Of The Problems At High Temperature Developments, Pravin Lalwani

Theses

Not provided.

A Study Of The Effects On Sigma D And Resolved Lines As A Function Of Spatial Multi-Superposition Of Images, Jerome Katz, Roger Umbdenstock

Theses

In photography the fidelity of the image is often degraded due to the random graininess associated with photographic emulsions. A study was performed to obtain objective and subjective data on the effects of granularity and graininess as a function of the number of spatially superpositioned images. A target was designed and built.* Individual negatives were made utilizing copy equipment with a vacuum back to ensure precise registration during exposure. These individual negatives were then imaged onto 16mm film utilizing standard motion picture equipment and a vacuum platen which was designed and built to ensure precise registration of individual negatives during …

International Tourist Symbols, William Brown

Theses

Not provided.

Staved Construction In Furniture, Craig Mcart

Theses

Not listed.

Ceramic Sculpture In The Home, Walter J. Yovaish

Theses

None provided.

Chapel Furnishings, Sister Marie Angela Fina S.S.J.

Theses

None provided.

Interiors, Michelena Frascatore

Theses

None provided.

Shape In Landscape, Leona Frascatore

Theses

None provided.

Marion: A Creative Expression Of Personal Reactions To Environment, Harold Spencer

Theses

Not included.

An Oxidation Of Para-Nitrotoluene, Albert Edward Meisinger

Theses

The original purpose of this paper was to investigate the reaction kinetics of the air oxidation of para-nitro-toluene (PNT) to para-nitrobenzoic acid (PNBA). The reaction was to be carried out at atmospheric pressure and at temperatures between 100 and 175° C, and in the presence of an oxidation catalyst. However the main problem became one of trying to find a catalyst that would work at these conditions. The catalysts used were nickel acetate, cobaltous acetate, manganous acetate and manganese naphthenate. Hydrogen peroxide was tried as an accelerator for the reaction. None of these worked since no yield greater than 0.01% …

The Reaction Of Urea With Primary Alkyl Bromides, Ronald Lewis Stabile

Theses

The reactions between urea and the primary alkyl bromides from 1-bromobutane to 1-bromooctane were investigated. The effect of concentration, temperature, and solvents on the yield was determined. Second order reaction rate constants at temperature of 80°, 100°, and 132°C were calculated from the data for yield. The yield is defined as the percent of bromine from the alkyl bromide titrated as bromide ion.

The results indicate that the reactions of the primary alkyl bromides with urea are similar; the reaction being of the second order and the ex. tent of reaction being approximately the same for each alkyl bromide for …

Application Of Radioactive Tracers In The Study Of Diffusional Phenomena, Rodolfo Cilento

Theses

The study of mass transfer of a solute through a solvent can be greatly facilitated by the use of radioactive tracers.

This experiment was developed to demonstrate that by using radioactive tracers very small quantities of matter that would be very difficult to test chemically, can not only be tested but easily followed without disturbing the apparatus in which the diffusion is taking place.

Oleic Acid tagged with radioactive iodine (I¹³¹) was diffused through hexane at constant temperature in a glass column, one inch in diameter and thirty-six inches long.

The diffusion of Oleic Acid was followed by …

Gas Phase Fugacity Coefficients, Harvey Joel Klee

Theses

A method is presented for calculation of fugacity coefficients in gas mixtures. This work is based on a recent paper by Leland, Gamson, and Chappelear, wherein they presented a new method for evaluation of ideal K values. The information required for the method presented here includes pure component physical properties, and generalized tables or equations for compressibility factors, fugacity coefficients, and real gas enthalpy departure terms. Pseudo-critical temperatures and pressures for the mixture are calculated using the expressions presented by Leland and Mueller.

Five different binary systems consisting of paraffin hydro-carbon and CO₂ mixtures containing 318 separate points were …

Decomposition Of Diacetone Alcohol In Packed Beds Of Ion Exchange Resins, Arthur Donald Lahr, Rafael Juan Puente-Duany

Theses

A study was made of the rate of decomposition of diacetone alcohol by anion exchange resins in a packed bed under adiabatic and isothermal conditions. Two different resins were compared: a conventional type gel structure resin, Amberlite IRA-400, and a newly marketed maorore-ticular resin, Amberlyst A-26.

In a substrate with low water content, the rate of decomposition of diacetone alcohol by Amberlite IRA-400 vas controlled by intraparticle diffusion. This vas due to shrinkage of the polymer chain matrix of the resin. When dry diacetone alcohol feed was introduced the amount of decomposition was not measurable.

It was found that the …

Effect Of Temperature On Rate Of Absorption Of Ammonia By Water In Packed Tower, Chhotu B. Patel

Theses

Measurements of the rate of absorption of ammonia in water have been made using a 4-inch diameter Lucite column With porcelain Raschig rings packed to a height of 3 feet, Tests were made with water rates of 462 and 695 lbs./ hr-ft² and a constant gas rate of 130 lbs/hr-ft² with liquid temperature verying from 72° F. to 110° F.

At constant liquid and gas rate, the mass transfer coefficient, Κ_Ga, decreases with increasing liquid temperature and in represented by straight lines on plot of Κ_Ga versus temperature. The variation of Κ_Ga …