Digital Commons Network^™

The Construction Of Large Holloware Forms, James Chal

Theses

None provided.

Journal - September, 1974 - February, 1975, Thomas Jagger

Theses

None provided.

Electrodeposition Of Metal Onto Glass, Janice Whitcraft

Theses

Not Included

Two Series Of Dye-Transfer Color Derivation Prints, Robert Pfeiff

Theses

None provided.

Dependence Of Sensitizer Concentration On Grain Size In Sulfur Sensitized Emulsion, Satoshi Sakamoto

Theses

A series of emulsions (fine, medium and coarse) was precipitated by double jet addition. The surface area of each emulsion was determined by adsorption of l,l'-diethyl-2,2’-cyanine in varying amounts and measurement of spectral reflectance, and the electron micrograph of each emulsion was taken. The emulsions were sensitized with differing concentrations of thiosulfate sensitizer and for various digestion time. The relationships between grain surface, grain size, and sensitizer concentration were determined by combining the optimum results of three individual experiments. From the sensitometric properties, the relation between grain size and optimum concentration of sensitizer was determined. Also the relationships between grain …

An Examination And Evaluation Of Organizational Development Implementation And Its Effects In A Department Of An Institution Of Higher Learning, Duane Jelinek

Theses

None provided.

Design Of A Yig-Tuned Oscillator, Tien Liang Jin

Theses

A technique for designing YIG (yttrium-iron garnet) tuned transistor oscillators, tunable over the range of frequencies from 500 to 950 MHZ, is presented. The approach taken differs appreciably from that used in the design of conventional LC-tuned oscillators. One major difference is that the YIG tuning mechanism is electrically controlled. The YIG tuning element is treated as a single unit and is not resolved into an equivalent LC circuit. Instead, a direct method using reflection coefficients measured at network terminals to characterize various design stages is applied. The transistor is also characterized by reflection and transmission coefficients, i.e., S-parameters. Thus …

Current Flexible Rotor-Bearing System Balancing Techniques Using Computer Simulation, John Kendig

Theses

As the cost of machinery has risen and the need for dependability, safety and increased performance have in a similar manner increased, the needs of industry for viable flexible rotor balancing techniques has no less increased. Various flexible rotor methods have been advocated for supercritical shafting, but few studies or comparisons have appeared in the open literature. Among the procedures for balancing large and/or high speed (supercritical) rotors are the "N" modal method of Bishop and Gladwell, the "N + B" modal of Federn, the "N" and " + B" simultaneous modal method of Kellenberger, and the influence coefficient method …

Effects Of Varying Unsharp Masking And Contrasts In Duplicate Mammographs With Respect To Cancer Detection, Leonard Parker

Theses

This report examines two methods of enhancing a photographic image and applies them to duplicating mammographs. Subtractive unsharp masking, one such method, is a photo-optical edge enhancement technique. The degree of unsharpness is controlled by interspacing between the mammograph and a receiving film while exposing. The other method is optimizing the combination of masking film contrast and duplicating film contrast. Three levels of unsharpness, two levels of mask contrast and two levels of duplicating film contrast were tested. The common objective of this project and mammography in general involves the recognition and diagnosis of breast cancer. Specifically, the experimental objective …

A Computer Based Analysis Of The Effects Of Rhythm Modification On The Intelligibility Of The Speech Of Hearing And Deaf Subjects, Harry Lang

Theses

The speech of profoundly deaf persons often exhibits acquired unnatural rhythms, or a random pattern of rhythms. Inappropriate pause-time and speech-time durations are common in their speech. Specific rhythm deficiencies include abnormal rate of syllable utterance, improper grouping, poor timing and phrasing of syllables and unnatural stress for accent and emphasis. Assuming that temporal features are fundamental to the naturalness of spoken language, these abnormal timing patterns are often detractive. They may even be important factors in the decreased intelligibility of the speech. This thesis explores the significance of temporal cues in the rhythmic patterns of speech. An analysis-synthesis approach …

Photosolubilization Of Cuprous Bromide, Richard Frisicano, Jeffrey Harris

Theses

A dissolution system called photosolubilization invented in 1964 by R.K. Blake and applied to silver halide was investigated to determine the feasibility of adapting the system from silver to copper. After cuprous bromide was shown to be light sensitive and able to be insolubilized, using a mercaptan ( 2-mercapto-4-phenylthiazole ), many of the parameters affecting this process were determined. The best photosolubilization was achieved using a 1/100 mole ratio of mercaptan to cuprous bromide. Insolubilization improved with increased mercaptan digestion time while pH appeared to have little effect on this mechanism. PH did change final print-out density. Increased sensitivity was …

A Philosophical And Psychological Examination Of Aesthetic Choice, Elaine Castiglione

Theses

None provided.

Sidewise Force Exerted On Slowly Falling Spheres Inside A Circular Cylinder, Gary Mark Greenstein

Theses

Numerical values are provided for the forces that must be applied to a reference sphere to prevent its sidewise motion when two equal-sized spheres settle through a viscous liquid bounded by a cylindrical tube. These values are presented for two independent set of circumstances:

1. - the spheres are translating but not rotating
2. - the spheres are rotating but not translating

Forces have been calculated assuming various distances between the sphere centers and with the line of centers at various angles to the horizontal. The results are discussed for the case where the spheres are both translating and rotating and compared …

Evaluation Of Herington General Integral Test For Vapor-Liquid Equilibrium Data, Raja Gopal Nori

Theses

A new set of general integral tests for the thermodynamic consistency of isothermal and isobaric equilibrium data of binary systems was proposed by E.F.G. Herington.

The systems Benzene-Cyclohexane and Benzene-n-Propanol were examined using Herington integral test-. The data used included sets of data known to be in error. One set was, in effect, at true vapor-liquid equilibrium (the data of literature) but the other data was obtained when the system was inadequately insulated and heated.

Heringtan test showed significantly different estimates for heats of mixing for the cases involved. The best data showed heats of mixing near the theoratical values. …

A Study Of An Adiabatic Tubular Reactor For The Multiple Chlorination Of Methane, Richard L. Braun

Theses

A computer program has been developed which simulates the multiple chlorination of methane in an adiabatic, tubular reactor. Euler's method is used to approximate the solutions of the programs differential equations.

The program is designed to determine the amount of an inert diluent required in the feed stream to attain some specified conversion of methane in a safe and efficient temperature range. Particular emphasis is put on determining the amount of diluent required to attain 98% conversion of methane at an outlet temperature of 723°K. The program also determines the reactor volume necessary to achieve the specified conversion, and the …

The Steady State Heat And Temperature Distribution Of A Hot Sphere Within An Infinite Wedge, David W. Horwat

Theses

This thesis presents a mathematical model of the steady state heat and temperature distributions of a hot sphere located along the midplane of an infinitely long wedge of any arbitrary central angle. The heat and temperature distributions of this geometric configuration are of immense value, since through the use of this model as a wedge shaped unit cell the description of any number of hot spheres, arranged in a regular planar array can be immediately determined.

The method of reflections is used to solve Laplace's equation , V²T=O , analytically using the sphere and the wedge walls as …

Solvents Screening For Hydrocarbons Separation Of Close Molar Volumes, Dilip K. Kapasi

Theses

The approximate physical model for solute-solvent inter?actions presented by J, M, Prausnitz and R, Anderson¹ is briefly discussed, Applicability of Weimer, Prausnitz³ and Helpinstill, Van Winkle⁷ models is investigated using experimental values of activity coefficients for C₅ hydrocarbons in 13 solvents including one nonpolar and 12 polar solvents. Independent correlations, based on our experimental values at 45°C for normal and isopentane have been developed. Although the required thermodynamic properties are obtained through a comparative analysis of all the available and estimated methods, dependable values of activity coefficients for Isopentane and 1-Pentene could not be obtained through …

The Determination Of An Optimum Plant Capacity In A Dynamic Economy, Frederick Louis Monesmith

Theses

A. Monte Carlo computer program has been developed in which the optimum plant capacity is determined by comparing calculated profitability criterions for various plant capacities. The estimates for input variables are developed into probability distributions. This data is then used to calculate a probability distribution for a-profitability criterion. In this thesis approximately thirty input variables are developed into beta distributions. Each variable must be estimated with a ninety percent probability estimate, a most likely probability estimate and a ten percent probability estimate. The three level estimates for each variable completely describe the beta distribution. Approximately half of the beta distributions …

Rheo-Optical Properties Of Polyisobutylene, Russell B. Biss

Theses

This study presents quantitative experimental data on the various stress-optical characteristics of polymer liquids, specifically, polyisobutylene. Through the use of a concentric cylinder rheogoniometer and a rotational viscometer, the temperature effects of a newtonian polyisobutylene liquid. was studied and was found to have a stress-optical coefficient independent of shear stress and minor temperature changes. The experiments confirm that the birefringence is a known function of the extinction angle and the shear stress. Various polyisobutylene liquids were used in a simple flow device to observe the birefringence in the 1-3 plane and the 2-3 plane. The results indicate that the 1-3 …

The Thermal Degradation Of Polyvinyl Alcohol, Carlos Eduardo Ortiz

Theses

The thermal degradation of polyvinyl alcohol has been investigated using mass spectrometry, differential thermal analysis, and infrared spectroscopy unlike previous investigators, formaldehyde and acrolein were not observed volatiles. In addition, acetic acid was observed, a product not reported previously.

A Study Of The Vibrational Spectra Of Some Monosubstituted Pyridines, Hussein Ibrahim Abdel-Shafy

Theses

Infrared spectra in the range (4000-250 cm^-1) and Raman spectra in the range (4000-150 cm^-1) of pyridine, 2-, 3- and 4-chloro-, bromo-, and methylpyridines, 2-fluoro-, 2-amino and 4-ethylpyridines have been measured. The spectra, vibration and assignments of the observed frequencies of 2-amino-, and 4-ethylpyridines are presented for the first time. The infrared data for 2-fluoropyridine is combined with the previously reported Raman data of Stephenson and Voelz to allow complete vibrational assignments for this compound for the first time. Frequency assignments for the other molecules are re-examined and where necessary changes and/or additions in frequency assignments …

Study Of Rochester Residents Current Attitudes And Knowledge Of New York City Banks Located In Rochester, New York, Dennis Easter

Theses

None provided.

A Study Of The Effect Of Ink Tack, Printing Pressure, And Printing Speed On Toning In The Driographic System, Thomas Rigg

Theses

An investigation was made into one of the newer planographic printing plates, specifically 3M's Dry Plate. This plate is part of the system more popularly known as driography. As with many new processes, driography is beset with several problems. These include plate durability, substrate suitability, and toning. This study deals with the problem of toning and a. method for investigating it. In driography, toning is defined as the inking of the non-image background of the plate. Several factors are thought to have an effect on the amount of toning. Factors such as ink tack, ink temperature, room temperature, humidity, speed, …

Suggested Guidelines For A Printing Program In Secondary Education, Raymond Torella

Theses

None provided.

Figurative Tapestry, Lynne Bull

Theses

None provided.

A Photographic Recorder For Experimental Parachute Test Data, Peter Vredenburg

Theses

Improvement in the ability to record and retrieve experimental data in general enhances the degree of utilization of information. Recent advances in electronic logic circuits, and the advent of the light emitting diode, make possible the utilization of photography as an initial recording medium. This improves the retrieval time for data, since it can be reduced and coded prior to recording with modern solid state circuits. A feasibility study, and construction of a prototype recorder was done for application to experimental parachute test data. The recorder monitors strain gage response at a sample rate of 20 per second, converts the …

Design Of Multipass Fractionating Trays, Paul W. Becker

Theses

Multipass fractionating trays are vapor-liquid contacting devices with high liquid handling capabilities which can be economically used in large fractionating towers. However, process design engineers in the chemical and petroleum industries seem to have an aversion to specifying multipass trays for their tower designs. This thesis presents the case for using multipass trays as well as methods for their design.

Because multipass trays are not symmetrical, as one and two pass trays are, the liquid and vapor need not split equally between the three or four passes. Equations are developed which enable the vapor and liquid flowrate for each pass …

Absorption Of Methoxyflurane By Conductive Rubber And Polyethylene Anesthetic Hose, Edward A. Kippel

Theses

This thesis presents the results of an investigation into the absorption of methoxyflurane by conductive rubber and polyethylene anesthetic hose. Previous studies are reviewed and theoretical considerations governing the diffusion process are discussed.

Diffusion coefficients are calculated for commercially available hose materials using different anesthetic concentrations and oxygen flow rates.

Data obtained is compared with the results of previous investigations (primarily concerned with sorption into rubber hose) and similar results are presented for polyethylene hose.

Graphical data is used to demonstrate the effect of hose material on inspired anesthetic concentration.

The advantage of disposable conductive polyethylene hose over reusable rubber …

Design For A Developing Consortium, Henry A. Mauermeyer

Theses

The number of consortia in American higher education expanded rapidly from only ten in 1960 to eighty in 1973. Many do not have an organized method of developing interinstitutional cooperation, structuring their internal management, or preparing to meet future expansion.

The design of an organizational process appropriate to consortia in general has been developed in this thesis. The design is based on an analysis of various materials: (1) literature on the consortium movement; (2) data gathered from a nationwide survey conducted by the author; (3) visits with directors of consortia and experts in the consortium field; (4) actual working experience …

The Design And Implementation Of A Time-Shared Computer Based Construction Cost Estimating System For An Electric Utility, Thomas Arnold Westphal

Theses

The work of the distribution department of an elec tric utility involves a great deal of medium to heavy construction. This work is vital to serve the energy needs of the public. An electric utility constantly builds, reinforces, and repairs electric distribution facilities. The material and labor used to accomplish this construction is expensive. Money in sufficient amounts is seldom, if ever, available to finance all proposed construction projects. Therefore, the cost of proposed projects must be estimated in advance, so that management may decide on an economic basis which projects will be authorized.

The need for accurate construction cost …