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Thermal Conductivity Of Solid Materials, Irwin N. Huppert

Theses

A literature search on the methods of determining the thermal conductivity of solids has been made.

A compilation of the various methods of determining the thermal conductivity of solids presented in the literature is given in the report. In general, the literature is lacking in correlations of thermal conductivity with other properties of solid materials. A review of the correlations found is presented. A summary of data presented in the literature is presented in the text.

A method of determining the thermal conductivity of solid materials without measuring the heat flow through the test specimen is presented. The use of …

Esterification Of Oleic Acid With Oleyl Alcohol, Robert Persurance

Theses

The esterification of oleic acid with oleyl alcohol was studied. A literature search showed that the chemical kinetics for this reaction had not been studied previously.

In the temperature range of 150 to 200°C. and up to a conversion of about 85 per cent, the esterification was found to be a second order reaction when the water of reaction was removed from the system by simple distillation.

Para-toluenesulfonic acid is an effective catalyst for this system, and the observed specific rate constant is a linear function of the catalyst concentration.

The effect of temperature on the specific rate constant for …

Investigation Of Effects Of Ph, Ionic Strength, And Drying Temp. On Dimensional Stability Of Film, Harry N. Parsonage, George A. Pittman

Theses

An investigation into the effect effects of chemical changes made in a processing system and drying temperature [with respect] to dimensional displacements of a final image was carried out using Eastman Kodak's # 8430 aerial duplicating film. Image displacements over both long and short distances were measured.

Over approximately 162 mm., drying at a temperature equal to that of processing, 70°F, resulted in no significant special displacement of the final image, while drying at higher temperatures prodded correspondingly larger displacements. A pH system between bathe similar to that found in a conventional process resulted in dimensional displacements, over the short …

A Kinetic Densitometer, Jerry Hughes

Theses

None provided.

Joel Chandler Harris: Aesop Of The South, Thomas Adams

Theses

This paper covers Joel Chandler Harris's early life and its influence on his writing, then examines the literature he created, including the Uncle Remus stories, and interpretations of his work.

The Design And Fabrication Of A Cell To Measure The Thermal Conductivity Of Viscous Fluids, Donald William Hagedorn

Theses

The purpose of this investigation was to design and construct a device to measure the thermal conductivity of viscous fluids. The thermal conductivity data obtained with this device will be used in later work on predicting film coefficients of heat transfer to non-Newtonian fluids.

A cell of the concentric cylinder type was fabricated. Main features of the cell are: two concentric bronze cylinders separated by a 1/8 inch annular space, a central water capable of producing a 10° C temperature gradient in the annular space, and two guard heaters on individual rheostats to control the end looses. The temperatures are …

Carbon Tetrachloride-Xylene Equilibria, Michael Jay Ram

Theses

The liquid-liquid equilibria of the ternary systems carbon tetra-chloride-xylene-propylene glycol and carbon tetrachloride-xylene-diethylene glycol were investigated. The effectiveness of the glycols as selective solvents for xylene was represented by a plot of weight ratio xylene to carbon tetrachloride in each phase. It was found that the diethylene glycol was the better of the two solvents at concentrations resulting in more than 75% xylene in the xylene-carbon tetrachloride rich layer. At the lower xylene concentrations the propylene glycol was found more effective as a selective solvent.

Electromotive Deposition, Storage And Dissolution Of Active Hydrogen Upon Carbon Electrodes, Joseph Gabriel Di Masi

Theses

The electromotive deposition, storage and dissolution of hydrogen upon carbon electrodes having real surface areas varying from one meter²/ gram to one-hundred ten meters²/ gram vas inves-tigated.

It has been found that a correlation exists between hydrogen storage and real area of the inner electrode. However, it has been further shown that storage of electromotive hydrogen is only for short periods of time, that is, several hours.

Equations Of State For Propyne, Thomas Marshall Stark

Theses

P-V-T data for propyne have been fit using the Martin-Hou and the Benedict-Webb-Rubin equations of state. The Martin-Hou equation, with its constants calculated from the critical properties and a vapor pressure point for the gas, fit up to 1.1 to 1.5 times the critical density with deviations of less than 1%. The Benedict-Webb-Rubin equation, with its constants calculated by the method of Joffe, resulted in greater deviations in the low pressure region than did the Martin-Hou equation; however, it also provided a better approximation of the data at high pressures and lower temperatures. The best over-all fit was obtained using …

Viscosity Of A Three Component System : Benzene-Ethanol-Acetic Acid At 20 Degrees C., 25 Degrees C., And 30 Degrees C, Alan Alvin Schetelich

Theses

The viscosity for the ternary system benzene-ethanol-acetic acid, has been determined. The viscosity maximum shown in the ethanol-acetic acid system is clearly distinguished in the ternary system as well. The viscosity minima which occur in the benzene-ethanol, and benzene-acetic acid systems are too slight to be readily apparent in the ternary system.

The ternary system viscosity was determined at temperatures of 20, 25, and 30° C. The effect of increasing the temperature from 20° C for the ternary system was to produce corresponding curves of lower viscosity. The maximum viscosity noted in the ternary system as well as the maximum …

The Electrical And Optical Properties Of Organic Semiconductors. Part 1 : Preliminary Survey And Purification Techniques, Bohdan Robert Czorny

Theses

The purpose of this work was to investigate the field of organic semiconductors and in particular to develop the means for preparing these materials in suitable condition for measurement and study of semiconducting properties. The first aspects of this project concerned with a preliminary survey of the field and techniques of ultra purification are covered in this work.

Anthracene was selected for investigation because it is the organic semiconductor most commonly studied by other investigators, and considerable published information exists for corroboration.

The preliminary survey elucidated the most promising methods of purification, which were chemical synthesis, sublimation, recrystallization from solvents …

The Corrosiveness Of Phenols, Edgar George Kaup

Theses

The effects of oxidizing agents, heat, light, and metallic catalysts on coloration in phenols is discussed, using data collected from the literature. The oxidation reaction is concluded to be the con-trolling factor in coloration. Corrosion data from laboratory experiments, field tests, and operating plants is presented for metals and non-metals in concentrated phenolic systems.

Synthesis Of Trimethyl Borate By Ester Interchange, Hugh Murphy

Theses

Trimethyl borate was prepared by transesterification of a high—boiling methyl ester with a high—boiling trialkyl borate using a metal alcholate catalyst. Interchange occurred between n—amyl borate and the following methyl esters: dimethyl sulfate, parahydroxy methyl benzoate, methyl salicylate, and methyl stearate. Interchange also took place between methyl stearate and tribenzyl borate, tri—n—propyl borate, and tri—m, p—cresyl borate. Highest yields and purities resulted from reactions involving methyl stearate. Catalysts employed were magnesium—aluminum ethylate and aluminum Isopropoxide.

Two methods of separating the methanol—methyl borate azeotrope were evaluated: sulfuric acid extraction and salt splitting. Extraction with sulfuric acid was determined to be the …

Isobaric Vapor-Liquid Equilibria System : Benzene, Chlorobenzene, Phenol, Larry Madestau

Theses

Isobaric vapor-liquid equilibria were determined experimentally for the three binary systems benzene-chlorobenzene, benzene-phenol, and chlorobenzene-phenol; and for the corresponding ternary system benzene-chlorobenzene-phenol. Constants for the Chao modified Redlich-Kistler equations were calculated from the experimental data by the method of least squares. These constants were then used to predict vapor-liquid equilibria for the ternary system. The predicted values showed satisfactory agreement with those found experimentally.

A modified Ellis still was used for obtaining equilibrium data. Samples of vapor and liquid phases were analyzed by means of the F & M Model 720 vapor phase chromatograph. Benzene, chlorobenzene, and phenol used in …

Classroom Discipline, Lorene H. Armstrong

Theses

Constructive classroom discipline is an important part of the educative process. It provides children with the opportunity to experience the satisfaction of fitting into a social group in an atmosphere which is conducive to learning and which promotes healthy emotional control. Academic learning and disciplined behavior are inseparable. If the latter breaks down, the former is impaired. Good teaching is made possible only by good discipline. This paper will explore, by means of the research, what is considered good discipline in the classroom.

Wilderness: A Visual Communication For Conservation, Joan Marinelli

Theses

Not provided.

Photomicrographic Inspirations For Graphic Design, David Bradley Smith

Theses

Not provided.

A Study Of A Continuous Photochemical Reactor, John Calvin Roe

Theses

The purpose of the investigation was to construct a continuous photochemical reactor, to reinvestigate certain portions of the work of Gaertner and Kent (7) and to extend the work to include some of the more common photochemical reactions.

A reactor of annular design with an elliptical light reflector, similar to that of Gaertner and Kent, was designed and constructed. The sources of radient energy were a cold General Electric T-6 Germicidal Lamp and a hot General Electric UA-9 Lamp.

The photochemical decomposition of oxalic acid sensitized by the uranyl ion was utilized as an actinometer. Fifty continuous runs were accomplished …

Extraction Of Technical Grade Lactic Acid With N-Butyl Alcohol, Joel Howard Kaplan

Theses

A possible step in a proposed industrial method for purifying and concentrating technical grade (44 per cent) lactic acid was investigated. The proposed method is the extraction of lactic acid from the crude grade by n-butyl alcohol, esterification of the extract by n-butyl alcohol and hydrolysis of the resultant purified ester to pure lactic acid. The extraction of lactic acid by n-butyl alcohol from the crude grade was the topic considered in this paper.

The extraction process was carried out at temperatures of 10.2°C, 25.0°C, 40.0°C and 60.00C using both U. S. P. lactic acid (85 per cent) and technical …

Preparation Of Aryl Sulfones By Sulfonation In The Presence Of Phosphrous Oxychloride, Donald Frederick Kruse

Theses

The use of phosphorus oxychloride as a dehydrating agent in the sulfonation of aromatic compounds has been investigated, particularly with respect to the formation of aryl sulfones. The sulfonation of several aromatic compounds using reagent grade sulfuric acid and phosphorus oxychloride has produced sulfone yields which exceed yields reported in the literature and obtained by more tedious methods. The presence of alkyl side groups on the benzene ring generally favors high yields of sulfone; whereas the presence of halogens generally reduces the yield. Sulfone formation is shown to be dependent upon the reactant ratios and upon the reaction time and …

Zirconium-Hafnium Equilibria, Edwin Otto Eisen

Theses

Equilibria in the thiocyanate-methyl isobutyl ketone process for the separation of zirconium and hafnium were studied. The effects of average thiocyanate concentration, feed acidity, and feed zirconium concentration on the separation factor of hafnium and the distribution coefficients of zirconium and hafnium were investigated. The hafnium separation factor was significantly dependent on the feed acidity but only slightly affected by the average thiocyanate concentration. No conclusion was reached about the effect of the feed zirconium conoentration on the hafnium separation factor. The polymerization of thiocyanic acid was found to be strongly dependent on the average thiocyanate concentration.

Vapor-Liquid Equilibria System : Carbon Tetra-Chloride, Toluene, N-Heptane, Joel Philip Pearlstein

Theses

A study was made of the vapor-liquid equilibria of the ternary system: carbon tetrachloride (CCl₄), n-Heptane (C₇H₁₆) and Toluene (C₇H₈). An Othmer still was used for the determination of the equilibria and the liquid and vapor compositions were ascertained by refractive index and density measurements. A comparison between experimental values and theoretical values was made using the Margules 3-suffix ternary equations for the correlation. Although the Margules equations did not correlate the experimental data very well, this is most likely due to the fact that the ternary solution was close …

Program Evaluation And Review Technique, Anthony Immaculate Agresta

Theses

The problem of planning, controling and evaluating complex projects both engineering and non-engineering has existed as long as the projects themselves. In the past the approach of management to this problem has been one which was based heavily on the use of historical information. There have been very few attempts to predict and control the occurrence of the objective event of these projects.

This thesis deals with a review of this problem and a new approach to the planning, control, and evaluation of these complex projects. This new approach is the Program Evaluation and Review Technique (PERT) which was developed …

Urea Adduction Of Oleic Acid, Leroy A. Dahm

Theses

The purpose of this project was to study the separation of the fatty acids and waxes found in cranberry skins by means of the formation of urea adducts. Current literature does not indicate equilibrium and rate data as controlled by mixing energy for the separation. Therefore this rate data was determined for the adduct formation of oleic acid, one of the constituents of cranberry skins.

A saturated aqueous solution of urea was used in the preparation of the urea adduct of oleic acid. Methyl isobutyl ketone and methanol were investigated as solvents for the fatty acids. Methyl isobutyl ketone was …

The Corrosion Of Zinc-Stainless Steel Couples In Flowing Sea Water, Henry Shaw

Theses

The effect of sea water flow on passivated stainless steel 304 coupled to high purity zinc was studied for more than 1000 hours at 23°C. The corrosion of both members of the couple increased over that of the metals alone. Zinc suffered severe pitting while the Stainless Steel was not visibly corroded, When the metals were exposed alone, zinc corroded uniformly while the stainless steel was not affected at all. The use of zinc coupled to Stainless Steel is not recommended in systems exposed to sea water.

Jurisdictional Disputes Within The Construction Industry, Dominick Joseph Magarelli

Theses

Work assignment disputes, known as jurisdictional disputes are common in the construction industry. They are not only costly but annoying as well, The construction industry has always been plagued with this type of dispute because each of its many craft unions regards certain types of work as a proprietary right. They jealously guard against any encroachment of their area of activity by other unions. Sometimes lines of demarcation between the various jurisdictions are not clear. Also, the development of new products and methods often brings with it clashes between unions each of whom claim exclusive right to the work assignment. …

Hypersensitization And Reciprocity Law Failure, Charles West

Theses

Two sets of Super XX cut film strips were hypersensitized under varying conditions of hypersensitizing agent used, concentration of hypersensitizing solution and time of hypersensitizing. The strips were rapidly dried and exposed. One set was exposed with a high film plane illuminance for 5.0 seconds, and the second set was exposed with a low film plane illuminance for 10^4 seconds. The difference in exposure necessary to give a density of 1.50 for the strips of each set was used as a measure of the reciprocity law failure. From the H and D curves of each test a measure of the …

Dimensional Stability And Acutance : An Investigation Into The Dimensional Properties Of Various Aerial Films And A Study Of Their Acutance, Basilio J. Battaglia

Theses

An experiment was run to determine if differences in drying temperature humidity conditions have any effect on the dimensional characteristics of five quite different aerial films used for various military applications. Acutance measurements were made from microdensitometer traces of each film-temperature and the data was statistically analysed.

Each sample was exposed through a precision stainless steel template to a density of about 1.0. Using an optical comparitor, the difference in size between the film and the template was measured to 10^-4 inch. As the image is circular, the size in any direction can be found by mere rotation on …

Fixation And Washing Techniques For Increasing Image Stability In Photographic Papers, Ray Eynard

Theses

Not provided.

Dye Sensitization Of A Photothermographic Emulsion, William Groves, Ronald Wichelman

Theses

The objective of this paper is to sensitometrically evaluate the effect of five sensitizing dyes (Acridine Orange, Pyronin E, Thionin, Erythrosin B, and Pinacyanol) on a photothermographic emulsion containing a 43-7-50 mole % ratio of mercurous oxalate, mercurous iodide, and silver iodide. The choice of dyes was based on their ability to sensitize into the longer wavelength region of the visible spectrum. Three concentrations of dye were used - 50, 100, & 200 micromoles per liter of emulsion. The sensitometric evaluation was based on the exposure of a neutral step wedge to tungsten light. The parameters investigated are those of …