Digital Commons Network^™

The Irish Plumber And Heating Contractor, July 1961 (Complete Issue)

Building Services Engineering

No abstract provided.

Effect Of Elevated Temperature On Efficiency Of Corrosion Inhibitors, Walter Dzingala

Theses

An experimental program was set up to investigate the effect of temperature on the protection efficiency of various inhibitors of metal corrosion. Contrary to most studies, an appreciable amount of the work was done with the corrosive effect being determined on the metal specimens that were exposed first to the inhibitor, then to air at different temperature, and finally to the corrosive medium with no inhibitor present. The purpose being to determine whether the inhibitor treatment would provide a permanent protection for a metal surface or would it be necessary to furnish a continuous supply of the inhibitor to the …

A Simplified Procedure For Diffusion Coefficients From Cation Exchange Studies, Robert Peter Lanyon

Theses

The purpose of this investigation was to extend the data and to improve the procedures of previous investigators (1), (2), and (3), in the study of diffusion coefficients in aqueous media.

The main contribution of this investigation is the elimination of the tedious work of size grading, drying, weighing, and rehumidification of the Dowex 50 W - X8 resin, which is used to determine the ion exchange rates for the cations under consideration, The simplified procedure measures the resin volume by displacing a known volume of water. The method of calculating diffusion coefficients follows the procedure of (1), (2), (3), …

The Irish Plumber And Heating Contractor, June 1961 (Complete Issue)

Building Services Engineering

No abstract provided.

Correlation Of The Atterberg Limits And The California Bearing Ratio Values For Soil-Cement Media, Vernon E. Kerr

Civil Engineering ETDs

Tests were made on three different soils, using controlled amounts of Portland cement and water. All tests were made using a standard liquid limit device or a six-inch mold. The variables were amounts of Portland cement, degree and thoroughness of mixing, moisture content, curing and compaction of samples. The recommended procedures for performing the Plastic Limits Test, Liquid Limits Test and the California Bearing Ratio Test were followed with very few exceptions. All values obtained from testing are entered in the report and no retesting was done.

The Fields Of Electric Dipoles In Sea Water- The Earth-Air-Ionosphere Problem, Wallace L. Anderson

Electrical and Computer Engineering ETDs

In the initial part of the following investigation; expressions will be obtained for the Hertz potential in three regions of arbitrary conductive and dielectric properties. The regions are separated from each other by two infinite parallel planes. In directions normal to these planes, the regions above and below the intermediate layer are considered to be of semi-infinite extent. The regions are individually homogeneous. An electric dipole is located in one of the semi-infinite media, which will be called medium 1. The intermediate layer is called medium 2, and the other medium 3.

Design, Construction And Operation Of Equipment For The Study Of Evaporation Of Aqueous Solutions Using A Simplified Reactor Design Approach, Virendra Kumar Mathur

Masters Theses

"The study of simultaneous heat and mass transfer in flow reactors has attracted the attention of many workers for a long time due to its wide application in the industrial field. These heat and mass transfer studies play an important role in determining the rate equations and in turn the size of the reactor itself. A large number of chemical reactions have been studied by various workers….

The purpose of this work comprised only the initial or exploratory phase of this overall project, and deals with the design, construction and assembling of the equipment necessary to carry out the vaporization …

Impact Energy Coupling And Impact Seismic Refraction Using Electronic Timing, Roderick D. Carroll

Masters Theses

"The use of impact energy sources in lieu of explosives for shallow seismic investigations is limited chiefly by the low energy available. Means of increasing the energy transmission of an impact source are investigated, using a weight drop arrangement and an oscilloscope. The energy of refracted arrivals is investigated by direct overburden impacts, compaction of the overburden at the point of impact and the use of steel and aluminum plates as coupling devices. Energy transmission is shown to be greatly increased, using a suitable coupling device and the conditions for optimum coupling are discussed. The elastic constants of the ground …

Apparatus For Inductive-Electromagnetic Model Studies, Won Ho Kim

Masters Theses

"The object of this research is to design, construct and calibrate an apparatus suitable for electromagnetic model studies. A portion of the thesis is devoted to general review and theoretical consideration of electromagnetic prospecting.

Theoretical analysis of electromagnetic survey data by mathematical methods can only be carried out for simple idealized subsurface conditions. Because of the difficulties of theoretical solutions, in contrast to the simplicity of the conditions of similitude in electromagnetic exploration, a model experiment offers a very useful means of studying and comparing the response of naturally occuring conducting mineral bodies.

An apparatus suitable for inductive-electromagnetic model studies …

A Study Of The Energy Dissipation And The Related Pressures And Velocities Of Cylindrical Tank Type Stilling Basin, Graham Wayne Wood

Masters Theses

"In all hydraulic structures that hold back water, whether for the purpose of power, irrigation or flood control, all must have some means of dissipating the energy that is produced by the movement of the water from the pond or reservoir to the tailrace. The method of dissipation depends largely on downstream conditions, terrain and economics. The dissipator is to prevent scour and the undermining of the dam itself. The construction of any type dissipator should be the best one available for the least cost of construction. However, space limitations may dictate another type of dissipator. It has been recommended …

Tank Studies Of The Resistivity Horizontal Profiling Method Of Electrical Prospecting, Edward Hornsey

Masters Theses

"This research project was undertaken to perfect a technique whereby theoretical horizontal resistivity profiles could be reproduced in laboratory tank studies.

Several specimen materials were tried and finally an acceptable specimen material was found. It was found that carbon specimens suspended in salt water would give horizontal resistivity profiles that agree to a remarkable degree with the theoretically predicted curves.

The investigations showed that the depth of burial of the specimen has a marked influence on the position of the characteristic edge effects and on the magnitude of the apparent resistivity.

The studies also indicated that successful tank studies could …

A Method Of Estimating Groundwater Influx Into A Vertical Mine Shaft, Morris T. Worley

Masters Theses

"Prediction of groundwater influx into mine openings is one of the more important pre-development problems encountered in mining. A satisfactory method of estimation would provide the information necessary for a mining company to dewater prior to shaft sinking, pre-grout the shaft area, or plan pumping schemes to handle the expected flow.

A standardized field method of estimating groundwater supply from pumping test data was developed by O. V. Theis and others. In the present research problem, the estimation procedure has been simplified by the use of nomograms. Certain modifications in the estimate must be made when a pumping well is …

A Dissolution Rate Study Of Beryllium In Hydrofluoric Acid, Donald Lee Mathis

Masters Theses

"Beryllium was shown to react stoichiometrically with HF, HCl, and H₂SO₄ acids in accordance with a plus two valence. These reactions were investigated by the hydrogen evolution method.

Dissolution rates were determined in five concentrations, 0.01, 0.05, 0.10, 0.50, and 0,75 N, of HF acid at 10, 20, 30, 40 and 50°C, This was accomplished by the hydrogen evolution method and the results were based on the tested stoichiometry. Beryllium has a high dissolution rate in HF acid, which approximates the following under similar conditions: 10 times Al, 4 times Ti, and 1.5 times Zr. A kinetic …

Program For Reclamation Of Surface Aquifer, C. E. Jacob

United States Army Corps of Engineers, Omaha District

This report is a final follow-up to a preliminary study done by the corps of engineers: preliminary study ground water contamination, RMA, 11 May 1960. Basic requirements for this study as outlined by the chemical corps included the following: 1. Plan for correction of contamination, 2. Determination of nature and extent of contamination, 3. Description and nature of phytotoxicants, 4. Determination of animal toxicity, and 5. Supplementary method of waste disposal. During the preparation of this report, chemical COPRS. Implied that the total responsibility for the combined efforts of all agencies involved in this work has been assigned to the …

Analyses Of Two New Electrode Configurations For Earth Resistivity Surveying, Chi-Chao Chang

Masters Theses

"Two new electrode configurations for the electrical resistivity- surveying are introduced: the A-configuration, consisting of a closely spaced pair of current electrodes separated at larger distance from the closely spaced pair of potential electrodes, and the B-configuration, in which each closely spaced pair consists both current and potential electrode. Because electrode pairs can be carried as units, the new configurations can be applied to continuous resistivity surveying more easily than the Wenner configuration....

Theoretical apparent resistivity values are derived, by Maxwell's theory of images, for the A- and B-configuration over a two layered earth using the depth probe method, and …

Scatter Matrix Analysis Of Plane Waves In A Layered Media, Bill W. Ashworth

Masters Theses

"The problem was the application of matrix theory to the solution of the reflection and transmission coefficients for a plane wave incident on a layered media. Background material relating to the problem was reviewed. Equations that were used in the solution of the problem were either derived or explained. The derivations for the reflection and transmission coefficients were carried out in order, starting with the simple case of normal incidence on a junction of two infinite media and progressing through the more difficult case of oblique incidence on a layer of finite thickness separating two infinite media. Scatter matrix analysis …

Effects Of Solids On Friction Factor In A Sand-Water Mixture, Frank J. Capek

Masters Theses

"At the present time various industries in both the United States and Europe are very interested in using pipelines as a means of transporting solids. The pumping of solids in pipelines isn't new, however, many of the pipelines in use today were constructed on an empirical basis. This is primarily due to the lack of knowledge concerning the flow properties in fluid-solid mixtures and slurries. With this need for fundamental information in mind, the author made a study on the effect solids have on the friction factor in fluid-solid mixtures.

In this paper various percentages of fine and coarse sand …

Transpiration Cooling Of A Plane Porous Plate, Raymond George Posgay

Masters Theses

"The transient temperatures were determined in a porous plate for one dimensional heat flow and one dimensional counter coolant flow. One surface of the porous plate was heated by a hot gas by convective heat transfer. A general discussion of the problem is considered and the procedure described for working all such problems dealing with transpiration cooling.

The solution of such problems is illustrated by two examples employing a ceramic plate one inch thick and cooled by a uniform flow of air in a direction counter to the flow of heat, while one surface of the ceramic plate was heated …

A Study Of The Dissolution Of Hafnium In Hydrofluoric Acid, James W. Johnson

Doctoral Dissertations

"The purpose of this investigation was to obtain kinetic and electrochemical information concerning the reaction of hafnium with hydrofluoric acid in order to establish the mechanism of dissolution. This included the determination of dissolution rates, the difference effect, and dissolution potentials of hafnium in hydrofluoric acid"--Abstract, page 1.

Correlation Of Pressure Drop And Holdup In A Packed Distillation Column, Nello Del Gobbo

Theses

Reed and Fenske have proposed a relationship that correlates the variables of packing dimensions, operating conditions, and fluid properties involved in countercurrent flow through packed distillation columns. Pressure drop and holdup data, obtained by atmosphere is distillation in columns packed with wire helices, was applied to the correlation by Reed and Fenske with good results. At reduced pressures limited data indicated the possibility of variations in the correlation as a function of the molecular weight of the material distilled.

Cummins investigated the effect of reduced pressure and holdup in distillation for several liquids using protruded packing. An attempt to correlate …

Engineer Intelligence Guide 33, Preparation Of Terrain Diagrams, June 1960, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

In 1960, geographic intelligence in the US Armed Forces was decentralized. The Intelligence and Mapping Division of the US Army Corps of Engineers was primarily responsible for creation of military intelligence concerning the surface of the earth excluding the oceans and seas for the armed forces of the United States. Engineer intelligence guides were issued to provide guidance concerning collection, processing, production, and dissemination of geographic intelligence to elements of the Corps of Engineers.

This engineer intelligence guide explains the differences between maps and terrain diagrams and provides examples using actual maps and terrain diagrams. The maps and terrain diagrams …

Correlation Of Maximum Air Velocity With Angle Of Installation For Wire Mesh Mist Eliminators, John Lawrence Reid

Theses

Wire mesh entrainment separators were installed in a vertical cylindrical column at varying angles from the horizontal. With a fixed liquid loading, air flow rates were varied in order to determine the maximum capacity of the mist eliminator for any given angle of installation. Mist eliminators studied were 4" thick and constructed of 0. 011" diameter Type 304 stainless steel wire with a density of 12 lbs. per cubic foot and 5 lbs. per cubic foot.

For normal installations of mist eliminators in the horizontal plane, the following equation is used to determine maximum allowable design capacity:

V = K …

Highway Impact Research: Origins, Aims, Directions, Robert H. Stroup, Eugene C. Holshouser, Louis Varga

Kentucky's Annual Forum on Transportation

No abstract provided.

The Separation Of Selected Radioactive Fission Products By Electrodialysis, Jerry David Vie

Masters Theses

"The recent advent of nuclear energy has opened an era of almost unlimited power and countless problems. A problem of extreme importance is the recovery of unburned nuclear fuel and the claiming of transmutation products, such as Pu²³⁹ and U²³³, from the irradiated fuel elements. The chemical processing must also separate the fission products from the fissionable material if the fuel is to be used again.

At present, the irradiated fuel elements are stored for 90 to 120 days to allow the intense short half-life activity to decay. After "cooling down", the nuclear fuels are separated from …

Preparation Of Casting Slips Containing Ferrous Powders And Alginates, Robert Eugene Newcomer

Masters Theses

"The preparation of casting slips containing ferrous powders dispersed by alginates was studied and an attempt was made to determine the mechanism by which suspension was attained. The colloidal aspects of preparing ceramic casting slips are discussed and an analogy is drawn to preparation of metallic slips suspended by alginates.

Sodium and ammonium alginates were used to suspend stainless steel and iron powders. The effect of NaOH, HC1, and various phosphate additions on the properties of slips and algin solutions was considered.

It was found that colloidal concepts can not be applied to explain observed behavior in the system studied. …

A Dissolution Rate Study In Hydrofluoric Acid Of Titanium And The Alpha Solid Solutions Of Oxygen In Titanium, John L. Ratliff

Masters Theses

"The dissolution mechanism of titanium in hydrofluoric acid was studied by collecting the hydrogen evolved during the dissolution reaction. A concentration range of 0.05 N to 0.50 N and a temperature range of 15°C to 45°C were employed for the determination. Values of the reaction order and energy of activation were determined for both pure titanium and the alpha solid solutions of oxygen in titanium and found to be the same within experimental limits. This indicated that the reaction giving rise to hydrogen evolution on the surfaces of both pure titanium and the TiO_x alloys was the same. The …

Design Of A Pressure Sensitive Cell And Model Studies Of Pressures In The Subgrade Of A Flexible Pavement System : Technical Paper, Thurmul Francis Mcmahon, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.

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 Effectiveness Of The Mass-Production Technique In Achieving Selected Objectives For Industrial Arts, Michael William Horton

Dissertations and Theses @ UNI

The purpose of this study was to answer the following questions related to the mass-production technique of teaching industrial arts:

1. Will two comparable groups of student show a significiant difference in achievement with respect to selected industrial-arts objectives when one group is taught by the traditional method and the other is taugh, in part, by the mass-production technique?

2. Will a mass-production project conducted for a period of six to eight weeks aid in the students' understanding of the problems, processes, and methods fo product development and production in industry?

3. Will students who work exclusively on individual projects …

Special Text, St 10-120-1, Quartermaster Intelligence: Organization And Procedures, December 1959, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

This is a textbook used at the Army Quartermaster School. In the 1950s, military schools related to one of the Army Technical Services were run by that service. Since the format and content of Army field manuals were often very similar to those of special texts, the same staffs often prepared both

The modern US Army vision of the technical intelligence developed during World War II. Shortly before World War II, Army Technical Services had been instructed to set up intelligence sections in the offices of their chiefs. The technical services were bureaus which supplied weapons, equipment, and services to …