Digital Commons Network^™

Diffusion Of Single And Multicomponent Solutes From Capillaries, Oleh S. Sklepkowycz

Theses

The purpose of this investigation was to determine the diffusion coefficients of several single and multi-component solutes, and to establish the relations between the diffusivity, the solute composition) and the diffusion rate. Such information pertinent to the extraction and leaching operations, can not be found in literature.

The procedure developed by Piret, Wbel, and Armstrong (25), involving observation of the extraction rate of two-phase mixtures from straight capillaries, was adopted and verified on a known sodium chloride-water system.

In the course of the experimental work diffusion coefficients more determined for ursolic acid, palmitic acid, and tripalmitin in methyl isobutyl ketone. …

Thermodynamic Properties Of Perfluoropropane, Frank Fang

Theses

The thermodynamic properties of perfluoropropane (octafluoropropane) have been determined by the author for the saturated region from -100°C to the critical temperature, 71°C. Properties in the superheated region were likewise determined by the author for temperatures from -35°C to 300°C and over a pressure range from 1 atmosphere to 40 atmospheres. Enthalpies, entropies, densities, and specific volumes are reported for both vapor and liquid phases where applicable. The datum point used in these calculations is based on a zero value for vapor enthalpy and vapor entropy at -100°C and 0.0183 atmospheres.

Constants used in the Benedict-Webb-Rubin equation of state were …

Interphase Gas-Liquid Mass Transfer Study In A Horizontal Channel, Bruce R. Marx

Theses

The rate of transfer of hydrogen sulfide and of carbon dioxide from an atmosphere of the gas saturated with water to a flowing stream of water in a horizontal channel was investigated over a range of water flow velocities and absolute pressures.

Mathematical models describing the system in terms of the penetration and boundary layer theories were inadequate when used to calculate the diffusivity of each gas in water at various conditions. The results of the hydrogen sulfide-water system study shows a relationship between the diffusivity, the interfacial concentration and the liquid flow rate. The calculated diffusivity of the carbon …

Esterification Of Oleic Acid, Niranjan Muljibhai Patel

Theses

The purpose of this paper is to determine the effects of catalyst concentrations and temperatures on the rate of reaction and energy of activation in the reaction system of oleic acid and oleyl alcohol. It is suggested by Flory^2,3 that the p-toluene-sulfonic acid catalyzed esterification reactions follow a second order mechanism. The p-toluene-sulfonic acid is used in the present work.

Two different catalyst concentrations were used at two different temperatures. The uncatalyzed reaction at the same temperatures was also studied. The specific rate constants are calculated and from that, the energy of activations are calculated using the Arrhenius equation. …

Amination Of Alkyl Halides, Frank Joseph Stulb

Theses

The possibility of aminating alkyl halides with urea was the prime interest of the research undertaken in this thesis. Alkyl halides and urea react only to a slight degree. However the reaction is rapid when dimethylformamide is used as a solvent.

In working with compounds containing halogen on the aromatic ring we always found the halogen to be replaced by the amino group. With alkyl halides, however, this was not so. In the case of the reaction between an alkyl halide and urea in a solvent, a compound of composition close to that of a di-alkylurea was isolated and the …

The Altar Of Sacrifice, Rev. Gerald Hellem

Theses

None provided.

Mass Transfer Into Cylindrical Liquid Films Measurement Of Liquid Diffusivities, Ronald Francis Lovenguth

Theses

This thesis was undertaken to augment and validate the previous work of Ratcliff and Reid⁽⁷⁾ in the area of diffusion of immiscible liquids. Their novel approach to this particular problem of liquid diffusion led the author to consider an experimental technique that has been used in gas-liquid studies. A short vetted-wall column was used to determine the rate of mass transfer of benzene and toluene into thin cylindrical films of water. A general analytical solution for the rate of mass transfer has been derived and is given below. This solution was checked using the system benzene-water.

G=3.63(Π(ρ_ω-ρ …

The Virial Equation Of State Based On Critical Constants, Ghanshyam R. Patel

Theses

Results obtained from the Epstein equation of state¹⁵ i.e. equation (8), which is theoretically valid up to the critical density, are compared with the experimental values of the compressibility factor. The calculated values of compressibility factor or ethylene, ethane, propane, and n-butane were obtained using two methods of evaluation for the second and third virial coefficients. In addition, using these two methods and excluding fourth, fifth, and sixth virials in the Epstein equation of state, compressibility factors were calculated for all the four compounds to test the effect of higher virial terms. In the proposed method-(A) and method-(C), the …

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 …

Polypropylene Fibers, Anthony Vincent Galanti

Theses

One of the latest members of the rapidly growing therrnoplastic polymer family which appears capable of successfully competing with the currently saturated textile and chemical markets is polypropylene fiber. The objectives of this Thesis were to: (1) examine the effects of polymer characteristics and fiber processing conditions on the properties of polypropylene fibers, and (2) correlate all existing information on the physical, chemical, and mechanical properties of polypropylene fibers and comparatively evaluate this material with other fibers, natural and synthetic.

Polypropylene is the first member of a new group of polymers prepared by a mechanism defined as "stereospecific" polymerization. From …

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 …

Ceramic Wall Reliefs For Church Interiors And Exteriors, Sherwood Smith

Theses

The purpose of this thesis is to execute a series of five ceramic wall reliefs. These reliefs will be made abstract through the use of symbols and will attempt to give connotative ecclesiatic meaning in church surroundings.

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.

The Purification, Analysis And Growth Of Single Crystals Of Organic Semiconductors, Melvin Leonard Druin

Theses

The purpose of this investigation was to design and construct a furnace for growing large single crystals of organic compounds by slow crystallization from the melt by the Bridgman technique. The crystals obtained by this furnace will be used in a later investigation of the intrinsic electrical and optical properties of organic semiconductors.

The methods describe have been used width success to produce large single crystals of anthracene and ethyl-p aminobenzoate with diameters of 1/2 inch.

The most promising methods of purification of anthracene, which were chemical synthesis, washing, recrystallization from solvents, sublimation, dimerization, co-distallatian and zone refining have been …

Experiments In The Potentialities Of Glazes Developed From Naturally Occurring Minerals And Industrial Waste Products Common To Potsdam, St. Lawrence County, New York, Arthur Sennett

Theses

Not Included

Effect Of Liquid Viscosity On Performance Of Wire Mesh Entrainment Separators, Raymond Paul Vogel

Theses

The knitted wire mesh entrainment separator, commonly referred to as a demister*, is in common use to separate entrained liquid from vapor streams. However, little quantitative information is available concerning the effect of physical properties of the entrained liquid on allowable gas velocities.

Studies were made on two demister styles to determine the effect of liquid viscosity on demister performance, Liquid viscosities from 0.9 to 12 centipoise were investigated using water, glycerine-water mixtures and heavy no. 2 fuel oil as the test liquids. Air was used as the gas medium in all cases.

Regression analysis of the test data indicates …

The Supreme Court And Integration, Herston P. Bonner

Theses

The subject of this thesis was "a result of the present school integration crisis" that was occurring at the time it was written in 1964. The paper examines rights granted in the Thirteenth, Fourteenth, and Fifteenth Amendments to the Constitution, Supreme Court decisions regarding school integration, and the particular situation of school integration in Gadsden, Alabama. Analysis of integration cases prior to 1900, the Supreme Court's 1954 decision, the situation in Little Rock, Arkansas, integration of Alabama Schools, and integration issues in other parts of the US is included.

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.

Reconstructed Wavefronts: Comparative "Quality" Of Several Systems, William Cook

Theses

Not provided.

Graphic, Identity Symbol Theories And The Creation Of An Institutional Graphic Image, James J. Burke Jr.

Theses

Not provided.

Investigating Media As A Means Of Expression, Wolodymyr Pylyshenko

Theses

None provided.

A Study Of Early Christian Symbols And Their Use In A Contemporary Church Interior, Marcella Connorton

Theses

None provided.

Surface Treatment Of Pottery, Jon B. Curtis

Theses

None provided.

Separation Of Mononitrotoluenes By Clathration, Eugene Ivashkiv

Theses

Thirty-one Werner-type compounds have been prepared, at least 10 of which were not previously investigated. Manganus tetra(4-methylpyridine)dithiocyanate, zinc tetra(4-methylpyridine)dithiocyanate, ferrous tetra(4-methylyridine)dithiocyanate, nickel tetra(4-methylpyridine)dithiocyanate and nickel tetra(pyridine) dithiocyanate can be used for clathration of mononitrotoluenes. The best results have been obtained with the complex formed between nickel dithiocyanate and l-methylpyridine. Three clathration stanges are needed to obtain 99 percent pure para-nitrotoluene. A clathration efficiency of 60 percent has been achieved per stage. A new process for the recovery of clathrated compounds has been developed. Clathration can be carried out as a cyclic process without the complex consumption when the developed method …

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 …

Vapor Liquid Equilibria, Niranjan Prasad Shukla

Theses

A survey of the literature gave no reference to the n-Propanol Glycol system while the n-Propanol-Benzene system had been previously studied. Experimental data were found to agree closely with those existing in literature for the n-Propanol-Benzene binary system.

A ternary miscibility diagram at fixed temperature was found to give first-type of miscibility curve, i.e. n-Propanol was completely miscible in all proportions with Benzene and Ethylene Glycol, while Benzene and Ethylene Glycol were found to be partially miscible. The plait-point was determined by drawing tie-lines and using the Sherwood method as well as by the loga rithmic method of Hand. Both …

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 …

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.

Application Of Transient Response Analysis To An Automatically Controlled Liquid Level System, Armando Anthony Gregoli

Theses

System instability or poor control are problems which occur in commercial automatically controlled liquid level installations. A simple level control system was constructed to define the parameters which affect a level control system response. Special problems which occur in commercial installations were evaluated.

The system parameters were defined. To simplify the mathematical analysis, a negligible measurement and controller time constant were assumed. These were later shown to be reasonable assumptions. Transfer functions were derived for each component and were used to describe the system response. The system response was predicted by transient response analysis and compared with experimental results. An …