Digital Commons Network^™

Osmotic And Mean Activity Coefficients Of Cacl2, Nai, Libr And Licl In Ethanol At 50 Degrees C, Gregory J. Czerwienski

Theses

Vapor pressure depression data for CaCl₂, NaI, LiBr, and LiCl were measured at a molality ranging between 0.2-7.5 depending on the solubility of the salt in ethanol. Data were also measured at 35° C for the LiCl. The apparatus used was a recirculation still of the Othmer type.

Osmotic coefficients were calculated from the total pressure of the system. The one parameter Bromley equation and the three parameter Pitzer equation were used to correlate the data. For all the systems, the Pitzer equation correlated the data better as one would expect. Mean activity coefficients were calculated graphically and …

A Closed Form Image Force Function For Deposition Of Particles In A Cylindrical Tube, Hsi-Chung Chiou

Theses

This study investigated the behavior of charged particles suspended in a laminar steady incompressible flow in a cylindrical tube under the influences of image , inertia , viscous and gravitational forces. A new expression for the image force was obtained by introducing an approximate potential energy function. The velocity profiles employed in the analysis were uniform and parabolic.

The governing equations derived were based on Newton's second law of motion and were solved by a Runge-Kutta numerical method. The results were obtained for different values of Q, a dimensionless inertia-charge parameter. For a value of Q equal to zero the …

Characterization Of Microorganisims After Feeding With Phenolic Compounds : Comparing A Domestic Sludge To An Industrial Sludge, Dianne Adamowitz

Theses

This study examined the effects of phenolic compounds on the populations in mixed liquors obtained from two very different treatment plants: the Passaic Valley Sewerage Commissioners plant in Newark, and the Livingston, NJ municipal treatment plant. The dominant organisms were identified initially and after ten days exposure to phenol (100 ppm), and either 2-chlorophenol (20 ppm) or 2,6-dichlorophenol (10 ppm) in aerated batch reactors.

Results confirmed the remarkable similarity between the two mixed liquor populations, in spite of the significant differences in the operation of the two treatment plants.

Comparison Of Several Manufacturing Techniques Used To Produce A Sterile Antibiotic Powder, Antonio Joseph Barberio

Theses

There are several manufacturing processes (crystallization, spray drying, freeze drying, and closed crystallization) that are used to produce a sterile antibiotic powder. A pharmaceutical manufacturer is faced with the problem of deciding which process is best suited for their operations. The purpose of this thesis is to propose a comparison technique that might aid in a solution to this problem. In the first step of the comparison technique, a fixed rating is assigned to a number of different categories (i.e. initial cost of equipment, product purity, etc.) for each process. The fixed ratings were established from an industrial survey, and …

Replacement Of Surface Ducted Rays Near Caustics With Guassian Beams, Carlos Javier Ruiz

Theses

Conventional approach to a solution of a wave propagation problem in an inhomogeneous medium is to utilize either rays or modes to represent the wave field. Asymptotic ray theory (ART) starts to fail in the vicinity of caustics due to rays experiencing many reflections. Even uniform representations do not properly correct this deficiency of rays when caustics start to pile up in the far range. One possible alternative is to replace these rays with modal bundles and remainders [1]. A promising technique using Gaussian Beams has been used to represent the total field due to a point or a line …

Preparation And Properties Of Monomers Derived From Hydroxyhexyl Methacrylate For Dental Adfesive, Ren-Dar Ku

Theses

Although methacrylic acid is the simplest unsaturated carboxylic acid and its hydroxyl ester polymerize readily, yielding useful resins, no adequate study of the preparation and application of the higher hydroxyl alkyl methacrylates has been published. The commercially important hydroxyethyl and hydroxypropyl methacrylates are manufactured from the appropriate alcohol in the presence of sulfuric acid, a method which appears to be less suitable for production of higher hydroxyl alkyl methacrylates. The purpose of the present work was to prepare the hydroxyhexyl methacrylate (HHMA) by a generally applicable method and determine its common physical properties. In addition, the urethane methacrylates were synthesized …

Reliability Study Of Liquid Crystal Display, Kalpesh Mahendra Desai

Theses

The purpose of this thesis is to study the reliability of liquid crystal display under different temperature conditions. To accomplish this, accelerated life testing was done on the soft glass and the hard glass liquid crystal display units at 77 C and 85 C temperature without any added humidity or voltage.

As the current is a usefu1 indicator for probable wear of liquid crystal display, leakage current was measured at 0 hour, 1000 hours, 2000 hours and 3000 hours when the units have stabilized at room temperature.

The date shows higher spread for the hard glass units. This may indicate …

A Research Study To Determine The Characteristics And Attitudes Shared By Entrepreneurs And Intrapreneurs And The Similarities And Differences Between Them, Miguel A. Vargas

Theses

The United States of America has been the mecca of many ventures for people with vision, goals and perseverance. The prosperity of our nation has been paved by individuals with great ambition, determination and insight, who have dared to take on a risk in owning a business enterprise.

This research study was conducted to determine the characteristics and attitudes of both entrepreneurs and intrapreneurs, as well as the similarities and differences between them.

For this study, a survey of entrepreneurs.was conducted through the use of questionnaires distributed to business owners located in the counties of Essex, Passaic and Hudson, in …

Micro Computer Animation, Peter Sterling Franks

Theses

Not Included

Diverse Realities, Julia Dutton Peterson

Theses

Not Included

Diva, A Data Flow Language, Edith Lawson

Theses

The underlying principles of concurrency and data flow are summarized along with a survey of the current data flow languages. A high level data flow language, DIVA, is developed that provides the basic data types and language constructs of traditional languages as well as some unique features of data flow. The organization and data structures of the compiler and assembler are also discussed.

The Contributions Of Linn Boyd Benton And Morris Fuller Benton To The Technology Of Typesetting And Typeface Design, Patricia Cost

Theses

The relative obscurity of Linn Boyd Benton and Morris Fuller Benton, is investigated. The two men, father and son, made significant contributions to the technology of typesetting and to typeface design, yet they are not now well known in the industry. Linn Boyd Benton invented a pantographic punch-cutting machine, which he later modified to engrave matrices. This machine made the Linotype machine practical, since it took the tedium and great expense out of the making of Linotype 'mats.' Benton's machine was and still is used at the American Type Founders Company, and was copied for use at type founding companies …

Pmos Digital Structures, Robert Pearson

Theses

A majority of new integrated circuit designs are being fabricated in CMOS technology which uses both pMOSFETs and nMOSFETS. The nMOSFETS have been well characterized over the past few years whereas the pMOSFETs have been ignored since MOS technology moved to nMOS in the early 70 's. Investigation of pMOS devices will provide information that will be useful for other technologies such as CMOS. This paper looks at the design, fabrication, fabrication simulation, electrical characterization, electrical simulation and testing of digital pMOSFET circuits. A particular emphasis will be placed on understanding the process so that first time integrated circuit processors …

Elementary Art Education Curriculum: The Incorporation Of The Computers In The Art Room, Camille Deni

Theses

Not Included

Robotic Quick Change End Effector System, William Craig

Theses

A quick change end effector (QCEE) system was developed and tested on a GMF model A-l robot. The QCEE allows for the automatic interconnection of up to three independent pneumatic channels for gripper actuation. The QCEE was designed for a maximum payload of 15 lb. and weighs approximately 5.4 lbs. The system was tested using pneumatic grippers for pick and place operations, and functioned well in a simulated manufacturing environment.

Sequence: Strategies For Order, David J. Joseph

Theses

None provided.

Black & White Continuous Tone Printing Using Multiple Negative Working Plates, So That Each Plate Prints An Equal Segment Of A Determined Density Range, Frank C. Forti

Theses

Continuous tone printing, either collotype or screenless lithography, are processes that are in limited use. The halftone method of reproduction is still the most economical way to reproduce a continuous tone original. This study dealt with the mechanism of screenless lithography, more specifically on how to make the use of negative working plates a feasible alternative to positive working plates. It is known that the positive working plate can print a longer range of tones than a negative working plate. So the main point of the experiment dealt with how to extend the range of a negative working plate. A …

Human Ecology, Bill Mcdowell

Theses

None provided.

Emulsification Rate Of Sheet-Fed Offset Ink And Its Effect On Printed Quality, Qingyi Chen

Theses

This thesis is a study of Surland's Emulsification Method, and is intended to demonstrate the effect of change in emulsification rate curve with different types of fountain solution whose surface tension was varied. The surface tension of a fountain solution can be changed by the addition of isopropyl alcohol. Two inks were modified to produce the same tack reading but a different emulsification capacity. Using the Surland method the two inks and two fountain solutions generate four different emulsification rate curves and these four curves are tested for their effect on printed quality. The printing performance of an ink is …

Against The Wall, Arthur Hynes

Theses

Not Included

Against The Wall, Arthur Hynes

Theses

None provided.

The Relationship Between Average Color Difference And 3-Channel Colorimetric Quality Factor For A Simple Additive Color System, Stefan Pabst

Theses

Neugebauer's Colorimetric Quality Factor for a simple additive color reproduction system is calculated for 17 detector response functions. Each response function is used to simulate the reproduction of 124 colors and 774 metameric grays. The mean color difference between original and reproduced colors is calculated for colors and metamers for each detector response. The relationship between mean color difference and colorimetric Quality factor is studied.

A Study Of The Relationship Between The Black And White Solid Ink Density And Image Quality In Lithography, Chia-Wei Wu

Theses

The purpose of this research is to determine the relationship between the solid ink density and image quality by application of an image quality scaling method. The results quantify the relationship between image quality and printed solid ink densities. Six different solid ink density prints were produced, including solid ink density 0.8, 1.0, 1.2, 1.4, 1.6 and 1. 8. A paired comparison evaluation procedure was used to determine which of solid ink density prints was the best in this experiment. The optimum tone reproduction corresponding to the solid ink density which produced the best possible image quality is shown by …

Spectrophotometric Studies Of Individual Components Of A Cupric Chloride Etchant Used In Printed Wiring Board Manufacturing Processes, Christine Mee

Theses

A study was performed to develop an accurate, on-line method of determining the cuprous chloride concentration in a typical cupric chloride etcher. A technique was developed using the slope between two spectrophotometric absorption points produced by scanning a solution sample. An on-line monitor was developed to produce a faster and more accurate method of solution concentration control for a typical cupric chloride etching solution. Slope increased linearly with increasing cuprous concentration when the 535 and 560 nanometer bandwidth filter combination was used. Monitor accuracy was found to be independent of cupric concentration, hydrochloric acid concentration, and temperature over the cuprous …

Family Album, Julie Gelfand

Theses

The intent of this thesis is to photograph individuals in Rochester, New York devoted to improving the quality of their lives and the lives of others. In these photographs, I will attempt to combine both aesthetic and social concerns while investigating methods of self-expression through the documentary form.

The Bestiary Viewed, Norbert John Dekerchove Jr.

Theses

Not Included

Annotations, James Conlin

Theses

Not Included

The Eroticism Of Presence (Allusion To The Essence Of An Object), Eric Mosher

Theses

None provided.

The Photographic Snapshot, Michael Simon

Theses

Not Included

Distributed File Systems For Unix, Edward Ford

Theses

With the advent of distributed systems, mechanisms that support efficient resource sharing are necessary to exploit a distributed architecture. One of the key resources UNIX provides is a hierarchical file system. Early efforts supported distributed UNIX systems by copying files and sending mail between individual machines. The desire to provide transparent mechanisms on which distributed systems access resources has propelled the development of distributed file systems. This thesis presents a brief history of the development of distributed systems based on UNIX, and surveys recent implementations of distributed file systems based on UNIX. The IBIS distributed file system is an example …