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The Effect Of Boundry Layer Control By Passing Fluid Through Transverse Slots On Heat Transfer From A Pipe, Perakatte Joseph George

Masters Theses

"The object of this work is an experimental investigation into the possibility of obtaining an increase in the forced convection heat transfer coefficient for a pipe by passing the fluid through narrow transverse slots cut in the pipe, and thereby altering the boundary layer pattern.

Since the greatest barrier to the flow of heat from a solid to liquid exists at the boundary layer, it can be expected that any device which will alter the boundary layer pattern will alter the heat transfer coefficient. When mass crosses a boundary layer in a direction perpendicular to the main motion of the …

An Experimental Study Of The Effects Of Additives On The Collapsibility Of Carbon Dioxode-Sodium Silicate Bonded Foundry Cores, Robert G. Liptai

Masters Theses

"Every foundry is searching for methods and tools to raise product quality and production while lowering cost. In early 1954 published articles on the new carbon dioxide-sodium silicate process of core hardening began to stir the imagination of most of the foundries throughout the United States, This process has probably claimed more space in the foundry journals than any other subject, hailed by some as a cure-all and dismissed by others as unsatisfactory.

The list of advantages of this process was impressive, but anyone associated with the process was confronted with daily problems that had to be solved regardless of …

Effects Of Co2 On The Strength Of Lime Treated Clay Soil, Tuncer Karakurt

Masters Theses

“A large number of the difficulties encountered in highway work are due to the variable nature of soils. In addition to its variable nature, soil is a difficult material to deal with because of the complexity of its physical and chemical properties. From prehistoric times the construction of a satisfactory foundation has been one of the greatest problems facing the engineer and builder. Even though the needs of scientific methods were necessary far earlier, the study of soils as a construction material was scientifically given attention to only during the last three decades. Soil science being so young there are …

Analysis And Simulation Of A Cross-Correlation Communication System, Dennis Jay Gooding

Masters Theses

"Statement of the problem. The purpose of this study was (1) to calculate the probability of error as a function of receiver input signal-to-noise ratio for a typical communication system employing cross-correlation detection; (2) to design and construct an experimental model of such a communication system for the purposes of demonstrating the operation of the system and verifying the theoretical calculations"--Introduction, page 1.

Electrical Model Investigations Using The Horizontal Profiling Technique, Alan H. Kwentus

Masters Theses

"Electrical exploration methods have been used for many years as a means of determining subsurface structures and in the search for mineral deposits. Vertical profiling techniques can be used to determine rather accurately the resistivity and thichness of horizontal or gently dipping beds for cases up to four layers. Mathematical calculations have been made for multiple layers and theoretical curves have been computed and published for four and more layers. The vertical profiling method is not particularly well suited to the problem of locating lateral changes in resistivity produced by such features as ore bodies, sinks and channels. These features …

The Separation And Microdetermination Of Cobalt In High Purity Nickel, John Richard Knapp Jr.

Masters Theses

"It has been found that many substances in an extremely pure form or containing certain trace impurities exhibit many unique physical and chemical properties. Investigators studying these properties have encountered many difficulties, especially in preparing the extremely pure substance and/or in accurately determining the quantity of impurities present. These problems arise chiefly from the very similar chemical properties of the constituents being separated and the possibility of contamination during the necessary processing of the substance for purification or analysis.

Trace analysis, therefore, has become very important in recent years. Where previously analyses based upon parts per hundred were adequate, now …

Critical Load For A Rectangular Plate Simply Supported On Three Edges, Built In On The Fourth Edge, And Compressed On Two Opposite Simply Supported Edges By A Load In The Plane Of The Plate, Bert Louis Smith

Masters Theses

"There are many engineering structures in which thin plates are used extensively, some examples of which can be found in ship and airplane structures, bridges, etc. The problem contained in this thesis is the analysis of a thin rectangular plate simply supported on three edges, built in on the fourth edge, and compressed on two opposite simply supported edges by a load in the plane or the plate. This problem becomes one of stability, and the object of the solution is to find the smallest load that will cause the plate to buckle"--Introduction, page vi.

Comparative Petrographic, Petrochemical And Spectrographic Analyses Of The Precambrian Granitic Rocks Of Southeastern Missouri, Eva B. Kisvarsanyi

Masters Theses

"Petrographic, petrochemical and spectrographic studies were completed on selected Precambrian granitic rock samples from Southeastern Missouri. This investigation contributes to a more detailed knowledge of the Precambrian granitic rocks of this part of the state.

Petrographic analysis of forty-four thin sections of granitic rocks from the St. Francois Mountains area revealed six different granite types. These have been named the Fredericktown, Knoblick, Doerun, Graniteville, Klondike and Silvermine granites. These rocks form a large part of a composite batholith. More than one period of granitic intrusion is represented, but differentiation also contributed to the formation of this diversity of the rocks. …

High Temperature Oxidation Of Nickel, Virgil R. Friebel

Masters Theses

"Using a sensitive volumetric technique, a study was made of the kinetics of oxidation of nickel at 1200° C. and 1300° C. Three purities of nickel were used for the investigation which was limited to the initial three hours of reaction.

The rate of oxidation of nickel followed the parabolic rate law after an initial period of deviation which lasted up to 40 minutes. No direct correlation was found between the oxide thickness and the end of the period of deviation from the parabolic rate law.

The purity of the nickel was found to have a marked effect on the …

Oxygen Permeability Of Free Paint Films, Janice I. Kellerman

Masters Theses

"As early as the mid 1800’s investigations were performed on the gas passage through rubber, but it is only comparatively recently that plastic polymeric materials have come into prominence. One interesting aspect of much experimentation begun was that of permeability, and it was soon evident that, in general, polymeric materials have extremely low permeability of gases. This is, in essence, the basis for use of plastics as packaging materials, balloons, and in many other designs and fabrications where it is desirous and/or necessary to exclude air.

There are several variables which must be taken into consideration in the evaluation of …

Effect Of A Lime-Cement Additive On The Physical Properties Of A Podzolic Clay Soil, Raymond H. Frankenberg

Masters Theses

"The object of this research is to obtain data and information from laboratory tests concerning the effect of combined lime and cement additives on the physical properties of illitic clay soils"--Introduction, page 3.

Properties Of Air-Entrained Concrete At Early Ages, Ugur Ozoguz

Masters Theses

"This study, entitled "Properties of Air-Entrained Concrete at Early Ages" concerns a group of tests designed to provide quantitative information regarding the effect of entrained air on the strength and durability of concrete before it reaches its 28 day strength.

Experiences in the field and laboratories have demonstrated that the addition of a moderate amount of air to any concrete mix will bring a marked increase in resistance to the disintegrating effects of freezing and thawing.

There have been extensive studies made on the subject of durability of air entrained concrete. Most of these studies were based on the effect …

Investigation Of Economic Design Procedure For A Rigid Frame, Richard S. Groner

Masters Theses

"This work presents an analysis of various arrangements of component parts of a rigid frame. From this analysis a procedure is indicated for a logical choice of member sizes for a first trial selection of a frame for given loading conditions. The first trial solution yields a frame which is in the range of an economical design"--Abstract, page 2.

Some Dynamic Creep Characteristics Of Gypsum, Ikram-Ul-Haq Dar

Masters Theses

"A review of literature concerned with time-dependent deformation of geologic and non-geologic materials is presented. A static loading machine and a four unit dynamic loading unit was designed and assembled to evaluate static and dynamic creep properties of gypsum. The tests were run for various levels of static loads, and superimposed dynamic loads. Investigations were carried out to determine the relationships, if any, between impact energy, impact velocity and momentum, and dynamic strains. Viscoelastic coefficients were determined for the investigations. The conclusion was presented that time-dependent strain in the dynamic creep tests of the particular gypsum rock tested is a …

The Relationship Between Verbal Facility And Delayed Speech Feedback, Charles Joseph Arens

Masters Theses

No abstract provided.

The Correspondence Of Error Between The Voiced And Unvoiced Cognates “S” And “Z” In Children With Articulatory Disorders, Gerald F. Johnson

Masters Theses

Introduction

The problem as set forth in this thesis is to determine the correspondence of error between the voiced and unvoiced cognates "s" and "z" in children with articulatory disorders. It has been assumed that the correspondence of error type would be high due to the similarity of the sounds. Anderson, for example, says that "much of what is true with respect to "s" applies with equal force to its voiced analogue "z"." The problem of this research is to determine whether there is any correspondence between the respective errors on the sibilants "s" and "z" and if they correspond …

An Analysis Of The Articulation Errors In Spontaneous Speech Of One Hundred Children With Lisps, Paula C. Downs

Masters Theses

The Problem

This study is an attempt to determine the nature and relative frequency of the articulation errors shown by one hundred school children with lisps.

The Importance of Investigating the Phenomenon of Defective Articulation

The incidence of speech defects in the child population has been found to range from five percent (5%) to ten percent (10%) of the total child population. A child's speech is considered defective when the listener gives as much or more attention to the manner in which the child speaks as he does to the idea being communicated.

A Study Of The Effects Of Delayed Side-Tone Upon Voiced And Whispered Reading Time, Bruce Presten Ryan

Masters Theses

Definition of Delayed Side-Tone

The term delayed side-tone feedback refers to the delaying of one's hearing of himself by a fraction of a second, so that instead of hearing himself as he normally does, he hears himself or his own speech a fraction of a second later.

...in order to produce delayed speech feedback it is necessary to return the speaker's speech to his own ears approximately one-means of a magnetic tape recording and reproducing machine which has used to experience the effect prominently since they deliver delayed speech and exclude the normal air-borne undelayed speech sound which provides the …

An Investigation Of Some Characteristics Of Explosive Ammonium Nitrate-Reducing Fuel Mixtures, Klaus M. Kohler

Masters Theses

"It was the purpose of the investigation described herein to find the answers to some of the questions which arise with the use of an ammonium nitrate--non nitroglycerine--mixture as an explosive, such as

a) the effect of the percentage of fuel oil in the mixture

b) the effect of the loading density of the mixture

c) the effect of the diameter of the charge

d) the effect of the particle size of the ammonium nitrate

e) the effect of different reducing fuels

f) the effect of different primers"--Introduction, pages 5-6.

A Study Of The Genesis Of The Krueger Zinc Deposit And The Near-By Barite Deposits Of The Potosi Quadrangle, Washington County, Missouri, Attilio Ligasacchi

Masters Theses

This thesis deals with the study of the genesis of the Krueger zinc deposit and the near-by barite deposits of the Potosi quadrangle, Washington County, Missouri.

The rocks outcropping in the quadrangle embrace Pre-Cambrian and Lower Paleozoic formations, the Potosi and Eminence being the most important formations with regard to the studied deposits.

The few structures present in the area of the vertical type and are more abundant in the southern part of the quadrangle.

Special emphasis is placed on the relationships between the barite, the associated sulfides, and the host rock.

Geometric and geochemical criteria are studied in detail …

An Analysis Of Musical Form, Comparison Of Translations, And Interpretations Of The "Dichterliebe" By Robert Alexander Schumann, David Lynn Walter

Masters Theses

No abstract provided.

A Comparison Of The Keyboard Variation Music Of John Bull And Johannes Brahms, Alice Jayne Swickard

Masters Theses

No abstract provided.

A Preliminary Search For Subionizers, Joseph B. Hughes

Masters Theses

"A number of physicists of recent years have been attempting to explain the basic nature of the universe in terms of particles. A few particles have been predicted theoretically, and some of these, along with many others have appeared experimentally, Searches for them have presented some interesting experimental problems and brought forth some invaluable experimental apparatus. One of these devices is the Wilson cloud chamber, with which this thesis is concerned.

Of the particles that have been discovered thus far, only the electron and the proton appear to be stable. The rest ultimately decay by the emission of photons and …

Hymnody In The Liturgical Aspects Of Worship, Philip Steen

Masters Theses

The main purpose of this study was concerned with the relationship of hymns to services in the church. The author sought to answer the question, "What are the hymns that should be used for a certain service in the Church Year?” This would have to be explained from both a theological and musical viewpoint. In order to answer this question, it was necessary to include four minor areas of study (1) the history and use or hymns and hymn tunes, {2) the history and use of the Liturgical Year, (3) the elements that determine a good hymn and (4) the …

Graphical Solution Of Concentration At Production Wells Of Injected Radioactive Water Tracers, George E. Vaughn Jr.

Masters Theses

"With the advent of field research in which radioactive isotopes are used as tracers for water injected in secondary-recovery operations, knowledge of the probable transit time between wells of an injected tracer, its concentration at detection points, and the resultant optimum injection concentration has become important. Both detection and, consequently, injection concentrations of radioactive tracers are at least in part functions of the loss of tracer for various reasons, flow characteristics between wells, the rate of decay of radioactive emission, and the sensitivity of the detection apparatus. A method, based on the characteristics of a homogeneous 5-spot system, has been …

300-Kilocycle Ultrasonic Emulsification Of Paraffin Oil In Distilled Water, John Henry Rother

Masters Theses

"Emulsions have been in existence for thousands of years in the form of cosmetics, food, and medicines. Emulsions cover a vast number of products in both household and industrial use. Homogenized milk, butter, mayonnasise, salad dressing, and sauces are emulsions that are used every day at the dinner table. Medical salves, ointments, cosmetic creams and many other pharmaceuticals are used every day by members of both sexes in the human race. Waxes and polishes for automobiles, metal, floors, leathers, and furniture are emulsions. All of the new so called "wonder paints" and "rubber-base paints" are nothing more than an emulsion …

Frequency Response Of Rotating Servo Components, Yehuda Rachovitsky

Masters Theses

"The frequency response approach to the design of automatic controls is the dominant one today. This approach in a strict sense may be said to have started with a paper in 1932 by Dr. H. Nyquist, a physicist at the Bell Telephone Laboratories. In this paper Dr. Nyquist was concerned with the stability of feedback amplifiers. This work can be said to have made possible the transcontinental telephone as well as modern radio and television. Dr. Hendrick Bode, mathematician at the Bell Laboratory, extended the results of Dr. Nyquist and obtained some simple design criteria that enabled even technicians without …

Methods And Time Study In Mining Operations, Cyril Jones

Masters Theses

"It was the purpose of this study to evolve and present in a logical manner a method of approach from the efficiency standpoint, to mining operation problems. This, it was thought, could be best achieved by means of a method and time study program, which could examine all the operations in whatever detail was required"--Statement of the problem, page 1.

The Geology Of The Uranium-Vanadium Deposit Of The Diamond No. 2 Mine, Near Gallup, New Mexico, Raymundo J. Chico

Masters Theses

"This thesis deals with the geology of the Diamond No. 2 Mine east of Gallup, New Mexico. The sedimentary rocks ranging from Triassic to Cretaceous are described in relation to the local stratigraphic setting.

The Dakota formation is the host rock of the ore deposit, and was therefore studied in detail with regard to its petrographic nature and the sedimentary structures such as slumping. Special emphasis is placed on the study of the relationships between the uranium and vanadium deposit and the host rock. Geometrical and geochemical criteria are offered in order to explain the local genesis of the ore …

Unsteady State Heat Transfer From A Hot Body To A Liquid, Larry Clinton Atha

Masters Theses

"The problem investigated in this thesis is that of unsteady state heat transfer from a hot body to a liquid, a quenching problem. Unsteady state or transient heat transfer is heat transfer in which the temperature distribution changes with time.

If a hot body was suddenly quenched in a large mass of liquid, a film of vapor would form between the hot body and the liquid. For example, if a hot body was quenched in water a film of steam would form between the hot body and the water. It is the purpose of this thesis to determine the heat …