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A Survey Of Merit Rating In Industry, N. K. Nahavandi

Masters Theses

Introduction

Personnel administration is but one phase of industrial management. It has been defined as:

"Personnel administration means organizing and treating people at work so that their effort. singly and collectively, will bring the best results possible. This requires quite specific information about the employee and his job. It implies knowing what the employee is doing, and how and why it differs from what is wanted of him. It implies having some idea of the employees' capacity in relation to the responsibilities of his present assignment. It implies having a measure of the employers' contribution to the organization, and understanding …

Effect Of The Mixed Liquor Suspended Solids Concentration On The Treatment Of Dairy Wastes By Activated Sludge Process, Meredith Hambleton Saxer

Masters Theses

"The effect of the mixed liquor suspended solids concentration on the treatment of dairy wastes by the activated sludge process was investigated to provide original and basic information of value to the waste water treatment field.

The studies were conducted using a continuous flow activated sludge laboratory unit. Two different synthetic dairy waste systems were used in this investigation, the 0.05 Percent Skim Milk Waste System and the 0.1 Percent Skim Milk Waste System. These wastes provided BOD loadings of 43.9 and 91.1 lb. BOD per day per 1000 cu. ft., respectively, at the 12 hour detention period employed. Mixed …

Investigation Of Flow Rates Through A Rockfill Dam With An Internal Spillway, Jerry R. Bayless

Masters Theses

"Tests were performed on a model of a rockfill dam with an internal spillway for the purpose of developing a method of predicting the flow rate through the dam. The flow rate depends upon the head but is affected by the rock size and the height of the impervious core; there- fore, these factors were varied in the study. A relation for flow rate in terms of head was found for each combination of rock size and core height used and was compared to the general weir equation to find the coefficient of contraction; thus the effect of changing core …

Seismic Investigation Of Flint Clay Deposits In East Central Missouri, Roland D. Dayley

Masters Theses

"Seismic refraction surveys were conducted in several localities within the east central Missouri clay districts in order to determine the applicability and economy of this method as a clay exploration tool. Results of these surveys revealed that the sink-type clay deposits possess lithologic and structural characteristics that lend themselves favorably to this method of exploration.

Seismic records obtained from profiles shot across known deposits indicate that several factors other than velocity contrast serve to produce apparent seismic anomalies.

Some unforeseen time loss and expense was encountered because of malfunctions of the seismic equipment employed, which necessitated the purchase and installation …

Fractionation Of Fission Elements By Electrodialysis, George Joseph Bub

Masters Theses

"The development of nuclear power has presented countless problems to the scientists and engineers of today. A problem of extreme importance is the disposal of radioactive wastes. Another is the recovery of some of the useful radioisotopes from fission product waste solutions. This investigation is concerned with the recovery of some of the fission elements for use in radiochemical and medical research and in industry.

At present little effort is made to recover useful fission elements. The fission product waste solutions are treated to reduce the volume and are stored until the radiological hazard is reduced and are then disposed …

The Dissolution Of Magnesium In Strong Acids, Baldev K. Bhatia

Masters Theses

"The rapidly growing demand for magnesium and magnesium-base alloys in the manufacture of aircraft has led to a great amount of research into the corrosion characteristics of these materials. The result of such research has been the development of suitable magnesium alloys and protective coatings to retard corrosion.

The standard electrode potential of magnesium lies between -2.35 volts and -2.54 volts at 25⁰C (hydrogen scale). Thus, magnesium lies next to aluminium in the electrochemical series of elements. The atmospheric corrosion of magnesium has been studied under conditions of indoor and outdoor exposure. Under these conditions the initial attack is formation …

A Model Study Of The Behavior Of Elastic Liners In Shallow Underground Openings, Martin Samuel Oudenhoven

Masters Theses

"Models of epoxy resin were used in a stress freezing technique to determine areas of possible failure in lined circular openings. These models were loaded in a centrifuge for a fixed period of time, after which they were analyzed photoelastically. The material characteristic changes, with time, were recorded on graphs and used in the analysis.

Two types of tests were conducted; one, where the lining thickness was changed and, the other, where materials of the liner and plate material were changed.

The resulting analyses furnished proof that the greater the rigidity of the lining, the higher the stress developed in …

A Comparison Of A-C And D-C Lead Compensation From D-C Prototype Networks, Piyush Parikh

Masters Theses

"The object of this thesis is to study the difference in transient and frequency response characteristics between a prototype d-c phase lead compensating network and an equivalent a-c phase lead compensating network.

A second order servo is selected to be compensated and five d-c prototype and equivalent a-c phase lead compensating networks are designed. The frequency characteristics of the a-c networks are obtained experimentally and these of the d-c networks are obtained analytically. The characteristics of both networks are compared and their differences are studied. The transient characteristics of the d-c and a-c compensated closed-loop systems to a step input …

A Comparison Of The Load Carrying Characteristics Of Hydrostatic Thrust Bearing Using Monatomic, Diatomic, And Triatomic Gases, Joseph C. Pigott

Masters Theses

"The purpose of this investigation is to compare the load carrying characteristics of gases with different ratios of specific heat. The design, construction, and operation of an apparatus for testing and comparing the load carrying characteristics of gases are described. Several monatomic, diatomic, and triatomic gases were tested and the results evaluated and compared. The data are tabulated and displayed in a series of curves.

It was found that the monatomic gases exhibit a greater clearance for a given load and a greater total load carrying capacity than the diatomic gases which in turn have a greater clearance and total …

A Model Study Of The Induction Log Applied To The Detection Of Asymmetrically Located Orebodies, Robert Walter Piekarz

Masters Theses

"This research project was undertaken to determine the possibility of using an induction log of the type applied in petroleum exploration, for the detection of conductive ore- bodies asymmetrically located with respect to a borehole. Since a mathematical analysis would be extremely complex, a model study was conducted, using graphite bodies of various shapes to simulate different modes of mineral occurence.

The investigation showed that these bodies were readily detectable, and were capable of yielding anomalous curves characteristic of their geometry. The values of apparent conductivity decreased rapidly with lateral displacement, from the logging tool, as expected, due to the …

A Preliminary Study Of The Effect Of Heat Treatment On The Strength And Microstructure Of A Glass-Ceramic Material, P. D. Ownby

Masters Theses

"The strength and microstructure of a glass-ceramic material of the composition 53 percent SiO₂, 19 percent Al₂O₃, 15 percent MgO, and 13 percent Li₂O were studied. Cylindrical specimens of glass were formed and heat-treated to six different temperature levels for various time periods. The method of strength testing used was a diametral compression loading technique. It was found that the strength of this material increased initially with heat-treatment but then decreased. The strength characteristics of the completely crystallized glass ceramic material were found to be dependent on the initial nucleation period. Some factors which influenced anomalous crystal growth are described. …

Studies Involving Modification Of The Megregian Method Of Fluoride Determination And Application To Fluoride Balance Studies In Infants, Gene R. Wright

Masters Theses

Introduction

At the request of Dr. Frederick Margolis, M.D., and in association with The Upjohn Company, this research problem was initiated as a participation in the investigation of whether or not fluoride ingested as a constituent of the Upjohn 47-M liquid vitamin preparation is retained in an infant's body to the same extent as is fluoride ingested as the sodium salt by itself--either in solution or in tablet form. The retention patterns may be studied indirectly by measuring the amounts of fluoride excreted in the urine and in the feces during each of a series of equal time intervals after …

Comparative Analysis Of Specific Training And Conditioning Methods Pertaining To Competitive Swimming, Donald Dean Oberg

Masters Theses

No abstract provided.

A Study Of The Industrial Arts Electricity Programs In The Secondary Schools Of Illinois, William N. Lathrop

Masters Theses

No abstract provided.

Problems Involved In Counseling Adolescents, Millie M. Angle

Masters Theses

No abstract provided.

A Guidance Program For The Primary Grades, Ogreata M. Morgan

Masters Theses

No abstract provided.

The Influence Of Economics Upon The Voice Of John Steinbeck: Some Evidence From Selected Readings, Bernard Earl Eagleton

Masters Theses

No abstract provided.

Foraminifera Of The Cenozoic And Recent Genus Sphaerogypsina Galloway, Wayne C. Horton

Masters Theses

"The morphology of Sphaerogypsina as seen in thin section affords various characters useful in classification] 1) arrangement and composition of the wall (calcareous-perforate, radially crystalline); 2) layering of wall (like Gypsina, without layering or black line, having only microlamellae); 3) shape of test (always spherical); and 4) specific characters: size of test, order/unorder ratio, size of chambers, wall thickness, pore diameter, and type of embryonic apparatus.

Correlation of the above characters has allowed recognition of two new species. Comparisons with other genera strongly suggest placing the genus in the Family Gypsinidae (nom. correct.) rather than in the …

The Effect Of The Rolling Load On The Micro-Structure Of Low Carbon Sheet Steel, Jerry Lee Cadden

Masters Theses

"A Stanat 315, two high-four high, combination rolling mill is used to cold roll annealed, low carbon steel strips. A method of measuring the rolling load was presented. The method consisted of constructing a load cell using SR-4 strain gages attached to a steel column. The load cell was placed under the hold down screw of the rolling mill and a known load was applied. The stresses from this load were transferred to the mill housing where another SR-4 strain gage was located. The strain in the mill housing was recorded at the corresponding applied load. During rolling, the strain …

Experimental Stress Analysis Of Bolts In A Flange Coupling, Vijay Rastogi

Masters Theses

"In this investigation an attempt has been made to determine simple formulae leading to a better, more useful and much safer design of flange coupling bolts. The bolts were tested under tensile loading and bending and hence the results obtained apply for bolts under these modes of loading only.

The behavior of flange bolts under different initial tightening torques was studied by measuring strains in a bolt on which strain gages had been attached* . From this, the load producing separation of flanges, under different tightening torques, was determined and used in deriving formulae for prediction of the load for …

Neutron Flux Mapping Of The Msm Reactor, Cary Chow-Yuen Chen

Masters Theses

"This investigation presents a mean to determine thermal neutron flux of a reactor by irradiating copper wires inside the fuel elements. The activity recorded after decay correction, is the relative thermal neutron density. Thermal neutron flux is a measure of the neutron density at thermal energy, 0.025 ev.

Gold foils irradiated at National Bureau of Standards were used as the absolute neutron flux calibration standards. The average flux of the reactor with water as the reflector ranges from 7.24 x 10¹⁰ neutrons/cm² - sec. to 7.87 x 10¹⁰ neutrons/cm² - sec. as obtained from the calculations. …

A Determination Of Vapor Pressure Of Barium In The Thermal Production Of Barium Metal, Thomas A. Theobald

Masters Theses

The Knudsen effusion method was used to find the equilibrium reaction pressure of barium for the following reactions:
4BaO + 2Al - 3Ba + BaO·Al₂O₃ (l)
4BaO + Si - 2Ba + 2BaO·SiO₂ (2).
The resulting barium pressure for reaction (l) ranged from 0.27 mm. Hg to 1.77 mm. Hg in a temperature range of 940°C to 1086°C. The barium pressures for reaction (2) varied from 0.38 mm. Hg to 1.94 mm. Hg in a temperature range of 1000°C to 1086°C. The free energies of formation of BaO·Al₂O₃ and 2BaO·SiO₂ at 1087°C …

Thermal Conductometer For Liquids, Yuan-Kai Chang

Masters Theses

"The published data pertaining to the thermal conductivity of liquids are of such a character that it is very difficult to determine from them the correct value, or the temperature coefficient for any liquid.

Most of the published values of thermal conductivity for liquids are evaluated at one particular temperature. It is the purpose of this investigation to design, construct and calibrate a thermal conductometer for liquids over a temperature range of 30°F to 200°F.

Since water and glycerol were the only liquids found by this investigator with published data on their conductivities as a function of temperature, they were …

A Study Of The Chemical Kinetics, Activation Energy And Difference Effect On Beryllium Dissolving In Mineral Acids, Daniel Santhamurthi Gnanamuthu

Masters Theses

"The rate of dissolution of polycrystalline beryllium was studied in hydrofluoric, hydrochloric and sulfuric acids. Two samples of beryllium containing different amounts of beryllium oxide were used. The experiments were performed at temperatures ranging from 20 to 50°C, and at various acid concentrations. The kinetics of these heterogeneous processes conformed to a reaction order of approximately one in all the cases. Since the conditions of the surface were complex during dissolution, these might complicate the reaction. This might be due to the oxide layer, which is present as impurity.

The difference effect was determined at various acid concentrations at 25°C …

A Study Of The Colloidal Properties Of Zirconium And Promethium By Electrodialysis And Liquid-Liquid Extraction, James N. Click

Masters Theses

"The purpose of this investigation was to study the solution chemistry of zirconium by investigating the colloidal behavior of natural zirconium and zirconium-95, utilizing electrodialysis and liquid-liquid extraction techniques. Also incorporated into this study was the investigation of optimum conditions for the extraction of the natural zirconium and zirconium-95 with thenoyl trifluoracetone. A limited amount of work was done on the colloidal nature of promethium-147"--Introduction, pages 2-3.

A Study Of Several Commercial Steels In The Red Short Range, Jorge Alberto Espana

Masters Theses

"The red short phenomenon present in steel, was studied by means of torsion tests at temperatures between 800 and 1200⁰C. Cold drawn bars of different compositions of steels were tested, and the number of turns to failure and maximum twisting torque were plotted versus temperature.

All the steels tested, exhibited to have a certain degree of red shortness. By comparing the curves and the respective chemical analyses, the detrimental effect of sulphur and lead and the beneficial effect of manganese, was established.

Microscopic examinations revealed the intergranular nature of the cracks in the red short range. Sulphur and oxide distribution …

A Study Of Heat Transfer Coefficients On Cylindrical Pipe In Turbulent Flow, Dennie Lee Adkins

Masters Theses

"This thesis represents a study of the effects of turbulent motion on heat transfer coefficients on cylindrical pipe.

The turbulent motion was created by cutting transverse slots in a spiral configuration along the pipe length.

An induction heater was used for the heat source and water as the cooling medium. The water was conducted over the pipe surface and through the slots.

This caused the laminar layer along the pipe surface to be broken up and an increase in the heat transfer coefficient was experienced.

The main objective of this test was to find if a relation existed between the …

Circular Arch Analysis, Aylmer Pao-Sheng Cheng

Masters Theses

"This work presents an analysis of a two-hinged circular arch by both the elastic theory and the deflection theory. The basic assumption made in this analysis was that the moment of inertia of the arch rib and the normal force vary as the secant of the angle with respect to the crown. The increase of maximum moment as found by the deflection theory was in the range of 30%"--Abstract, page 2.

Syntheses And X-Ray Investigations Within The System Fes₂-Cos₂, Samuel Shu Mou Chan

Masters Theses

"Pyrite (FeS₂), cattierite (CoS₂), and various transitional members of the solid solution compounds were prepared. The methods used are as follows:

First, sulfides of cobalt, iron, or cobalt-iron were obtained by precipitation from a mixture of the cobalt chloride and/or ferrous sulfate in an aqueous solution. The dried precipitates were then mixed with an equal weight amount of sulfur and placed into silica glass tubes. After evacuation, they were filled with hydrogen gas of 3/4 of atmospheric pressure and sealed. The samples were then heated up to 500°C (for FeS₂), 650°C (for FeS_{2 …}

A Survey Of The Influence Of Selected Sulfides On The Thermal Decomposition Rate Of Zinc Sulfate, L. G. Twidwell

Masters Theses

"The influence which ZnS, CdS, Cu₂S, PbS, and FeS has on the thermal decomposition rate of ZnSO₄ was studied by measuring the SO₂ gas evolved per unit of time for various ZnSO₄-MeS mixtures at 600°C, and analyzing the solid phases by means of X-ray diffraction patterns.

The SO₂ gas evolved upon heating the pellets was analyzed as a function of time by absorbing the gas in a solution of distilled water, H₂O₂, and NaOH, and measuring the time required for the SO₂ to neutralize the NaOH. The gas …