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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 …

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.

Slow Compression Crushing Of Glass In Fluids, Peter Joseph Lucchesi

Theses

Generally only a small fraction of the energy used in crushing, on the order of 1 or 2%, appears as new surface energy in the product. The purpose of this work was to determine if higher efficiencies could be achieved by the use of different fluids surrounding the particle during crushing.

Single particles of solid glass cylinders, standing on. end, were crushed by slow compression in the presence of air, water, methanol, carbon tetrachloride, and glycerol. No effect was found with the various fluids even when considerable pressure was developed in the surrounding fluid in some of the glycerol experiments. …

A Study Of The Fatty Alcohol-Epichlorohydrin Reaction, Roy Henry Schaufelberger

Theses

The reaction between "Lorol" 5 fatty alcohol and epichlorohydrin was found to proceed at a rate which could easily be followed, at temperatures of 80 to 140°C, when catalyzed with 0.05 percent of a boron trifluoride ether-ate catalyst, based on the total weight of reactants. The reaction was followed by determining the decrease in epichlorohydrin concentration with time using standard analytical techniques.

Kinetic studies showed that the fatty alcohol/epichlorohydrin reaction was not a simple pseudo first order or second order reaction but rather a complex one probably composed of:

1. A second order reaction between primary fatty alcohol and epichlorohydrin. …

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 …

A Correlation Of Viscosity Of N-Paraffin Hydro-Carbons, Sheldon Krueger

Theses

A linear relationship between the Log viscosity and the Log vapor pressure is shown to exist for each n-paraffin hydrocarbon from C₃ to C₂₀. The average error of these equation e is ± 1.5 per cent of the American Petroleum Institute's¹ experimental values. The use of individual slopes for each equation is shown to be store accurate than one alone for all the viscosity data. These slopes e:thibit an unusual behavior by having a minimum value at undecane.

The slopes and intercepts are correlated with carbon number (the number of atoms in a n-paraffin Chain). These …

Prediction Of Extruder Performance For Thermoplastic Materials, Aldo Bergonzoni

Theses

The object of this thesis was to predict the output of an extruder, for thermoplastic materials, by using simplified equations relating output to screw speed and screw geometry.

Three different extruders were used for this purpose and several addition-type polymers were studied. These materials included: stabilized and unstabilized polypropylene, low-density and high-density polyethylene, general-purpose polystyrene and rubber-modified poly-styrene.

The results obtained show that, by using relatively low screw speeds (up to 140 r.p.m.), shallow screw channels and back pressures at the die up to 2000 psig., a theoretical output can be calculated with a maximum deviation from the experimental data …

A Study Of Continuous Photochemical Hydrolysis, Robert Parlante, Theodore Arthur Gropler

Theses

In this investigation, the ultraviolet absorption spectra and the batch photochemical hydrolysis of monochloroacetic and monobromoacetic acid, and their potassium and sodium salts, have been measured and compared with those existing in the literature.

The continuous photochemical hydrolysis of sodium chloroacetate has been investigated for the first time. The continuous photolysis of uranyl oxalate was investigated and used as a chemical actinometer.

Gaseous material in the reactant feed has been found to be important at low flow rates.

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.

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 …

A Study For Rural Development, Lawrence Irving Prashaw

Theses

None provided.

The Investigation Of Frequency Response And Stability Of A Heat Exchanger Under Condensate Control, Louis F. Fornoff

Theses

Control of a condensing steam heat exchanger by condensate throttling was investigated theoretically by a frequency response analysis. The theoretical analysis was verified by experimental operation of the heat exchanger.

The system was characterized by heat transfer calculations and Laplace transform functions. The transfer functions were used to complete a frequency response analysis of the system which predicted the controller settings, the stability of the system and its response to a step set point change. The calculations were verified by experimental operation and reasonable agreement was obtained.

It was calculated that condensate throttling can be used to obtain stable control …

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 …

Prediction Of Ternary Azeotropes From Binary Data, Eric Lustig

Theses

The Margules equation as modified by Wohl for ternary liquid-vapor systems, is used to develop ternary activity coefficients at different concentrations and varying temperatures. Corresponding binary experimental data are necessary to mathematically obtain these ternary activity coefficients. A trial and error graphical technique is used to examine the ternary data for azeotropic conditions. Convergence on ternary graph paper can be easily detected after the first two trials. Divergence is an indication that the system under consideration is nonazeotropic.

Most of the azeotropic systems investigated agreed quite well with published data. The range of disagreement of concentrations for component a in …

Nuclear Quadrupole Resonance Of Chlorine35 In Ammonium Chlorate And Ammonium Perchlorate, James Derwin King

Theses

Nuclei which have a spin number, I, greater than 1/2 usually have an electric quadruple moment as well as a magnetic moment. The electric quadrupole moment describes the deviation from spherical symmetry of the positive charge over the nucleus. Interaction of this electric quadruple moment of the nucleus with an inhomogeneous (axially symmetric) electric field existing in molecules and crystals due to the surrounding charge cloud causes radio frequency resonances to exist. The resonant frequency is dependent on the nuclear quadruple moment as well as the shape and magnitude of the electric field existing at the nucleus due to the …

The In Vivo Effects Of Hydrazines And Vitamin B6 On The Metabolism Of Gamma_Aminobutyric Acid, Miguel Angel Median

Theses

The discovery of gamma-aminobutyric acid (GABA) in mammalian brain and its rigorous identification was reported in 1950 (1,2,3). Enzymatic experiments with brain acetone powder revealed that GABA was formed by the decarboxylation of glutamic acid and that the enzyme, glutamic acid decarboxylase, required pyridoxal phosphate as the co-factor (4,5). Radioactive tracer studies in vivo and in vitro with glutamic acid and glucose verfied the fact that the former was the precursor of GABA (6,7).

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.

Spenser: Reflections And Parallels In The Romantic Poets, Sara Rivers Aderholdt

Theses

This paper calls attention to reasonable effects, noticeable echoes, and remarkable parallels of Edmund Spenser's philosophy and his treatment of myth and symbol as found in the Romantic poets.

Why John C. Calhoun Switched From Nationalism To Sectionalism, Matharee J. Boles

Theses

This thesis presents the several aspects of John Caldwell Calhoun's life that could have caused him to change, if he did change, from his intensely patriotic attitude of nationalism to an equally zealous sectionalist who was accused of leading his state and later the entire South in open rebellion against the union.

The Chronological Development Of Guidance In The United States, Matharee J. Boles

Theses

This thesis examines the chronological development of vocational guidance in the United States, starting in the colonial period through the 1960s. Special emphasis is placed on guidance's evolution and expansion, particularly through federal aid in the form of the National Defense Education Act and Title V of Public School Law 85-864.

Slavery In The United States, Robert F. Blumhagen

Theses

This thesis examines the issue of slavery in America, including how the institution began, treatment of those enslaved, plantation and city life, moral issues, reactions to slavery, the US Civil War, and political issues concerning slavery.

T.H. Huxley: The Educator, Esther Belyeu

Theses

This thesis examines T.H. Huxley in the context of his recommendations on educational curriculum, the art of teaching, school finance, exams, and his influence in the United States.

T.H. Huxley: The Agnostic, Esther Belyeu

Theses

The author offers a biographical sketch of T.H. Huxley, known as "Darwin's Bulldog," his stance on evolution and religion, including an exposition of agnostic philosophy.

Photomicrographic Inspirations For Graphic Design, David Bradley Smith

Theses

Not provided.

The Design And Execution Of A Book Of Children's Verse, Claudia Symonds

Theses

Not provided.

Wilderness: A Visual Communication For Conservation, Joan Marinelli

Theses

Not provided.

Epoxy Compound And Polystyrene Sheet Combined Decoratively With Wood, John Wright

Theses

None 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 …

Properties Of Non-Newtonian Fluids, George Robert Ferment

Theses

The purpose of this work was to investigate the fluid properties of non-Newtonian solutions.

The effect of temperature on the viscometric properties, flow behavior index (n) and fluid consistency index (K), was investigated. It was established that the flow behavior index was temperature dependent, tending to approach Newtonian behavior as the temperature was raised. The fluid consistency index was also temperature dependent; a plot of K vs temperature will yield a straight line on semilogarithmic coordinates.

The specific heats of non-Newtonian solutions were also determined. For systems containing large mass fractions of water, it was established that the presence of …

Viscosity-Vapor Pressure Correlation Of Alcohols, Methyl Ketones And Alkyl Halides, Kevin Frank

Theses

A linear relationship was found to exist between the logarithms of viscosity and vapor pressure measured at the same temperature for certain homologous series. Previous work by Di Geronimo, healing, and McGuire substantiated this correlation for n-paraflin hydrocarbons, n-paraffin fatty acids and esters, n-alkyl cyclohexanes, n-alkyl benzenes and n-l-monoolefins. The relationship takes the form

logη= A log vp + B

where A and B are constants characteristic of the homologous series.

The adaptation of this linear relationship to alcohols methyl ketones, and alkyl halides in the present work indicates a wide applicability of the correlation. the values of the series …