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Semi-Conducting Properties Of Gray Tin As A Laboratory Introduction To Solid State Physics, Glenn F. Powers, Gene E. Louallen, Robert M. Rickett

Journal of the Arkansas Academy of Science

No abstract provided.

Synthetic Fiber Industry- A Story In Industrial Location, Leonard D. Goranson

Journal of the Arkansas Academy of Science

No abstract provided.

Performance Characteristics Of A Tubular Regenerative Heat Exchanger, Harry J. Sauer Jr.

Masters Theses

"The term regenerator is widely used to define any type of heat exchanger in which the heat is alternately stored and removed...The present investigation is concerned with the calculation of the characteristics of the "single-blow", tubular regenerative heater, its dimensions and performance. In the analysis in this thesis, the heat is considered to be stored in bundles of tubes initially preheated by hot gases flowing through the heater and subsequently cooled by the flow of air. This paper makes no attempt to deal with the effects of radiation from the outer row of tubes to the heater shell"--Introduction, page 1-3.

Effect Of Gamma Radiation On Selected Organic Protective Coatings, James W. Johnson

Masters Theses

"The purpose of this investigation was to prepare pigmented and non-pigmented organic protective coatings and to irradiate them with gamma rays. The coatings received a constant radiation dose of eight million rads. Seven tests were performed on the various coatings. The data from the tests were tabulated so that a direct comparison could be made as to the effect of the radiation on the coatings. The data from the tests also enabled comparisons to be made to determine if the various pigments had imparted any specific properties that would be desirable in coatings being exposed to radiations"--Introduction, page 2.

A Preliminary Investigation Of Strains And Fracturing In Small Hydro-Stone Beams Due To Impact Loading, Niels B. Haubold

Masters Theses

"Every structure has a fundamental frequency which is sometimes referred to as its first natural frequency. If a periodic force acts on the structure whose frequency is equal to that of the natural frequency of the structure, a vibration is set up whose amplitude would approach infinity if it were not for the presence of damping. Since damping is always present, steady state conditions will finally be reached provided that the applied force is not so great that it will cause the structure to fail. The amplitude of the vibration will be a function of the applied force and the …

Frost Formation And Its Influence Upon Heat Transfer, Jack Lewis Loper

Masters Theses

"The cooling of a gas-vapor mixture or a mixture of several vapors, in the general case, results in condensation (phase-change) of one or more of the vapors when their respective dew-points are reached. This results in a mass transfer of the vapor to the cooling surface accompanied by energy transfer as the vapor gives up its latent heat of vaporization to the surface and becomes a liquid. The liquid accumulation adds a resistance to the further transfer of mass and energy unless some means is provided for its removal from the surface, such as gravity action.

In this paper we …

Transients And Saturation In Synchronous Machines, Sabi J. Asseo

Masters Theses

"The synchronous machine can be regarded as the most important electrical device in today's industry and civilization. Although many improvements in the development of powerful electronic devices have been made, in recent years, the importance of the electrical power engineering field can never be overlooked in any way.

Most of electrical power engineering problems have been studied in the first quarter of the present century, and the results applied to industry for the betterment of electrical power production. As distribution and transmission systems used become extensively large, new problems such as the stability of interconnected power systems, have been introduced. …

Reconstruction Of A Model L Podbielniak Fractional Distillation Apparatus, Raymond Bauer

Masters Theses

"The purpose of this thesis was to reconstruct a Model L Podbielniak Fractional Distillation Apparatus to provide equipment suitable for the study of batch multicomponent distillation. The apparatus will also serve as an analytical instrument. The equipment was instrumented to automatically control the distillation, but an operator is needed to select fractions and insure the proper functioning of the controls.

Samples of hydrocarbon mixtures of known composition were analyzed to prove the successful operation of the reconstructed apparatus"--Introduction, pages 2-3.

Effect Of Hydrated Lime And Portland Cement On The Physical Properties Of Clay Soil For Highway Base Construction, Judson Leong

Masters Theses

"The intent of this research is to determine the change in physical properties of a clay soil caused by the addition of 2, 4, 6, 8 and 10 percent of hydrated lime and portland cement. The effects of these admixtures on the physical properties of the soil were observed by comparing the results of various laboratory tests. The properties chosen for comparison were: (1) liquid limit, plastic limit and plasticity index; (2) shrinkage limit and shrinkage ratio; (3) density and optimum moisture; (4) resistance to penetration; (5) compressive strength and (6) cohesion and angle of internal friction. In order to …

Surface Temperature Measurement Of Metal Undergoing Induction Heating, Ding-Yee Nee

Masters Theses

"It is the object of this thesis to investigate the possibility of using thermoelectric pyrometry for surface temperature measurement of metal undergoing induction heating. The temperature range under investigation, as stated before, is 400 °F to 1250 °F. This research may actually be treated by two sections.

The first section concerns the methods of using thermocouples for ordinary surface temperature measurements. The second section concerns the effect, if any, on thermocouple e.m.f. readings while it is measuring the surface temperature of a metal undergoing induction heating. The first section of the investigation has been well covered by literature and will …

A Statistical Approach To The Zonation Of A Petroleum Reservoir, Leroy Allan Beghtol

Masters Theses

"The problem of dividing a reservoir into distinct permeability zones, in order to predict fluid flow and thereby the production history of the field, has long troubled the petroleum engineer. As a solution to this problem a new statistical method for zoning a reservoir was developed, using a modification of the analysis of variance technique. The application of the statistical zonation procedure to permeability data obtained from eight closely spaced wells substantiated the validity and effectiveness of the new method in determining distinct permeability zones"--Abstract, page iii.

Triaxial Testing Of Open-Type Bituminous Mixtures: Technical Paper, Joseph C. Oppenlander, William Harner Goetz

JTRP Technical Reports

No abstract provided.

A Study Of Highway Transportation In Indiana, Harold L. Michael, Arthur K. Branham, Donald O. Covault, John Edward Baerwald, Paul Day Cribbins

JTRP Technical Reports

No abstract provided.

Quality Aggregates For Indiana Highways : Technical Paper, Kenneth B. Woods, John Francis Mclaughlin, Robert Lee Schuster

JTRP Technical Reports

No abstract provided.

The Relationship Between The Unconfined Compressive Strength Of A Bituminous Mixture And The Viscosity Of The Binder : Technical Paper, Leonard E. Wood, William Harner Goetz

JTRP Technical Reports

No abstract provided.

Effect Of Rate Of Strain On The Strength Of Remolded Soil, Delon Hampton

JTRP Technical Reports

No abstract provided.

A Laboratory Investigation Of Factors Affecting The Slipperiness Of Bituminous Paving Mixtures, John Wallace Shupe

JTRP Technical Reports

No abstract provided.

The Preliminary Location Of A Proposed Highway By Photogrammetric Surveys, Dale Alden Bailey

JTRP Technical Reports

No abstract provided.

Annual Report Of The Assistant Director, 1957-1958, Harold L. Michael

JTRP Technical Reports

No abstract provided.

Polishing Characteristics Of Mineral Aggregates : Technical Paper, John Wallace Shupe, R. W. Lounsbury

JTRP Technical Reports

No abstract provided.

Experience With Core Drilling Machines, Power Auger And Electrical Resistivity On The Pennsylvania Turn Pike : Technical Paper, D. G. Shurig, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.

The Mechanics Of Continuously Reinforced Concrete Pavements : Technical Paper, M. M. Miller, Martin J. Gutzwiller

JTRP Technical Reports

No abstract provided.

Methods For Water Resistance Of Bituminous Paving Mixtures : Technical Paper, William Harner Goetz

JTRP Technical Reports

No abstract provided.

Stresses And Deflections In Continuously Reinforced Concrete Pavements, M. M. Miller

JTRP Technical Reports

No abstract provided.

The Value Of Planned Access On Urban Bypasses : Technical Paper, Charles Pinnell, Harold L. Michael

JTRP Technical Reports

No abstract provided.

Earth Motion Beneath A Prescribed Boundary Displacement : Technical Report, R. C. Geldmacher, J. W. Dunkin, R. L. Anderson

JTRP Technical Reports

No abstract provided.

Warping Stresses And Deflections In Concrete Slabs, Milton Edward Harr

JTRP Technical Reports

No abstract provided.

Estimation Of Highway Needs For County Primary Road Systems In Michigan And Minnesota By Sample Survey Methods, Donald O. Covault

JTRP Technical Reports

No abstract provided.

A Study Of The Extent To Which Girls Were Included In Industrial Arts In Grades Seven Through Twelve In The State Of Iowa, Walter Haynes

Dissertations and Theses @ UNI

The purpose of this study was to determine the extent to which girls were included in industrial arts in grades seven through twelve in the state of Iowa.

A Learning Index For The Midget Wiggly Block Test For Mechanical Ability, James Franklin Winegarden

Dissertations and Theses @ UNI

The writer became interested in testing mechanical ability while taking a course in the 1957 summer session at the Iowa State Teachers College dealing with the problem of teaching industrial arts. The teacher of this course was Dr. Howard O. Reed who had devised the Midget Wiggly Block Test for Mechanical Ability, which will be referred to hereafter in this report as the Midget Wiggly Block Test. During a class presentation, Reed state that there may be a learning process involved in the repeated assembling of the Midget Wiggly Block Test and presented a single formula for computing a score …