Digital Commons Network^™

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

Theses

None provided.

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

Theses

None provided.

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 …

Siegmund Lubin: Moving Picture Pioneer 1851-1923, John Arthur Helley

Theses

Siegmund Lubin came to the United States of America in 1867, and six years later, after various setbacks, established an optical business in Philadelphia, Pennsylvania. Experiments in his leisure time led him to a career in moving pictures. His success and accomplishments in the period of two decades were entangled in legal battles which resulted in his return to the optical business.

Mr. Lubin built several studios across the United States in a westward expansion. His studio in Coronado, California in 1915–16, with eastern controls, proved to have been typical of the western studio during the early motion picture days. …

Portfolio Of Limited Production Furniture, Elbert Benson

Theses

Not Included

Environmental Design, Rand Schuster

Theses

None provided.

Manpower And Productivity In The Construction Industry, John A. Purciello

Theses

The relationship between manpower and productivity is an important factor in the area of increasing construction costs. Manpower supply is affected by worker mobility, influx of minority workers, work accidents, and training and apprenticeship programs.

A survey was conducted in the state of New Jersey to determine if a manpower shortage existed. The survey was conducted by submitting questionnaires to contractors, unions, owners, and architect-engineers.

The results of the survey indicated that a manpower shortage does exist, and that the shortage has influ enced construction costs, Furthermore, as a result of the increasing costs, indications of a decline in new …

A Study On Occupational Sterotyping Among Graphic Arts Students Enrolled In Selected Public Secondary Schools, Monroe County, New York, Adrian Bernagozzi

Theses

The purpose of this thesis was to determine if the following elements in the curriculum of graphic arts programs in public secondary schools have been effective in enabling students to formulate adequately accurate occupational stereotypes in the field of printing: 1. educational philosophy 2. industrial experience of students such as work experience, personal contacts with people in the trade, and field trips 3. socioeconomic backgrounds of the students 4. vocational maturity of the students 5. occupational plans of the students. In the spring of 1971, students enrolled in advanced graphic arts classes of public secondary schools in Monroe County, New …

Graphic Communication Education In Maine, Howard Holinger

Theses

None provided.

Effectiveness Of Training Programs For Graduate Engineers, V.C. Rajashekar

Theses

This thesis represents an investigation of effectiveness as a result of engineering training. The basic elements of effectiveness and its learning process are explained and said that the effectiveness could be learnt and improved.

The term training, is basically the process of education and training. But training cannot be performed as an individual, but is performed as a group. Therefore training a group with having so many individuals needs careful consideration in designing a training program.

In order to get the broadest possible picture of current thinking and current activity in the area of company training programs for graduate engineers, …

Treatise On Chasing And Repoussé, Genie Goldberger

Theses

Not Included

The Carousel: An Exploration Of Etching And Drypoint Techniques Through Integration Of Organic And Mechanical Symbols, Paul Porter

Theses

None provided.

Salt Glazed Clay Surfaces, Brian Williams

Theses

Not Included

Research And Exploration Of Stone Settings, Jonathan O. Parry

Theses

Not included.

Flow Behavior Of Molten Polymer Blends, Kryspin Pawel Maciejewski

Theses

An experimental study of molten polymer blends was made using the Instron Capillary Rheometer. The materials investigated were two phase blends of non-crystalline polymers (poIymethylmethacrystate-low Mw-polyvinylacetate, polyvinylacetate-polystyrene, polymethylmethacrylate-low Mw-polystyrene, polymethylmethacrylate-high Mw-polystyrene), crystalline polymers (polyethylene-polypropylene) and combinations of non-crystalline-crystalline polymers (polyethylene-polystyrene). Two methods of sample preparation were used, blending of a polymer pair in a molten state by the use of Brabender blender, and a simple manual blending of pellets in desired proportion. The Brabender blended polymer pairs show lower viscosities, this is interpreted molecularly as a result of a reduction of the amount of chain entanglement on shearing of the …

Design And Construction Of A Digital Pulse Generator, David Myer

Theses

This pulse generator was built to complement the Stroboscope 501, a high speed multi-flash unit capable of producing up to 6000 flashes per second. The Stroboscope is equipped with a electro-mechanical frequency generator, however a solid state pulse generator has the advantages of being highly accurate and repeatable. The basic design criteria were that the generator have several selectable frequencies within the limit of the Stroboscope, be able to count several different amounts of pulses and then close off automatically and be triggerable from an exterior source. The unit designed meets all these specifications. A high speed multi-flash strobe has …

A Study Of Latent Image Formation In Photographic Emulsions Subjected To A Combination Of High And Low Intensity Exposures, George Macmanus

Theses

None provided.

A New Technique For Steady State And Transient Analyses Of Incompressible Flow Networks, George V. Catanzaro

Theses

A new technique for the calculation of the transient or the steady-state mass flow rate and pressure distribution in incompressible flow networks is presented. Employing the matrix method of network analysis, the nodal continuity and branch momentum equations are solved simultaneously to obtain explicit relations giving the unknown nodal pressures and branch mass flow rates. In this manner, the transient or the steady-state behavior of incompressible flow networks with arbitrary configuration having nodal sources and sinks as well as branch transducers can be determined. In contrast with the conventional steady-state network analysis methods, the new technique can be extended to …

A Study Of Heat Transfer And Inlet Flow Behavior In Molten Polymer Systems, Min Ho Choi

Theses

Two separate studies have been done in the present work: one to study the entrance effects in flow in molten polymer systems and the other to investigate the heat transfer to thermally softened flowing polymer.

The equipment for the entrance effect was designed to study the isothermal flow behavior of a polymer melt in the entrance region. The main object of this investigation was to find the entrance length for the melt to relax and to separate the pressure drop into viscous and elastic effect. Due to the failure in developing a proper pressure measuring device the experiment was not …

The Search For The Mystic Element In Weaving, Nasrin Keyhan

Theses

None provided.

Fort On The Apache Plunder Trail: A History Of Fort Buchanan (1856-1861), Theodore R. Parent

Theses

Arizona State Route 82 winds through the high country of southern Arizona. Approximately 9½ miles north of the present town of Patagonia, the road makes a sharp 90° turn toward the northeast. At this unmarked turn of the road, today’s casual driver sees the surrounding countryside covered with low-growing oak trees. Intermixed with these are several groves of large trees, some over 100 years in age.

The area is also cut by several canyons that lead into the valley through which the highway passes. These arroyos have been given such names as Hog and Monkey Canyons by early settlers to …

Theory Of Optical Spatial Filtering And Its Application To Enhance Low Contrast Fingerprint Images, Ludwig Scherlowski

Theses

Image improvement, through the use of the Fourier transform property of lenses using various frequency blocking filters, was investigated to determine possible utilization of this technique to enhance low contrast fingerprint image characteristics. Ten basic fingerprint patterns were degraded in contrast and then used as the object t(x,y) in an optical spatial filtering setup. A series of frequency blocking filters were used in an effort to improve the degraded object image. Visual comparison of the filtered images obtained by using a double band frequency blocking filter, which produced the most satisfactory images, shows improved overall contrast. Random ridge enhancement was …

Lusters And The Slab Form In Raku, Richard Hirsch

Theses

Not provided.

Development Of An Apparatus To Obtain Temperature Profiles Of Molten Flowing Polymers, Ismail Kemal Saltuk

Theses

The object of this investigation is to develop and test an apparatus to predict temperature profiles of polymer melts in laminar flow in a heat exchanger, with non-isothermal wall conditions.

A commercial polyethylene melt is pumped at various flow rates through a smooth 0.957 in. I.D. pipe. The entrance temperature of polymer is maintained uniform.

Radially distributed six thermocouples (0.062 in. 0.D.) are placed at 2.5 ft. intervals from the entrance of heat exchanger. Immersion of these probes parallel to the flow direction, reduced the errors due to the conduction of heat from the tube wall to the thermocouple stems. …

Familia, Maria Emerson

Theses

None provided.

Flat Monumentality, Theodora Cichy

Theses

None provided.

Determination And Application Of Winstein-Grunwald M And Y Values In Bridged Polycyclic Systems, Rosemary Leyden

Theses

The rates of solvolysis of 3-nortricyclyl p-bromobenzenesulfonate (nortricyclyl brosylate) have been determined (at 25.0) in the solvents acetic acid, methanol, and acetic acid and methanol with various small amounts of added water. First order rate constants were obtained by u.v. absorbance, conductometric and titrimetric techniques. All rate constants obtained, with the exception of the titrimetric data, were fairly reproducible and agreed with the previously reported data (where available). Numerical values of m from the Winstein equation: log k/k = mY were calculated from experimental data for solvolysis reactions of nortricyclyl brosylate in each of the solvent sets. These m values …

The Transferability Of Force Constants Among Olefins, John Martin Comerford

Theses

A normal coordinate analysis of the in-plane vibrations of ethylene was performed using a modified valence force field, a modified Urey-Bradley force field and a hybrid orbital force field. The B_2u species of isobutene was also analyzed. An attempt was made to transfer force constants from ethylene and thereby solve the A₁ species of isobutene, but a solution could not be obtained. This suggests that simple transference of force constants is not feasable in this case.

The potential energy distributions obtained for ethylene are discussed. The normal coordinates calculated in this work are appended.

Aiir Pollution Emissions From Turbine Powered Aircraft, Raymond Arthur Filippini

Theses

The major pollutants that are emitted by jet aircraft include: particulate matter (soot), carbon monoxide, aldehydes, hydrocarbons, and nitrogen oxides. The first of the pollutants, particulate matter (smoke), constitutes not only a visual nuisance but is also a potential health problem. The rest, which are not visible, are irritants and in high enough concentrations can be toxic.

Since pollutants emitted by jet aircraft are of the same type as those given off by a car, a direct comparison is possible. In one landing take off cycle (LTO), a four engine jet aircraft emits the same amount of particulate matter as …