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The Missouri Miner, March 17, 1971

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, March 10, 1971

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, March 03, 1971

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, February 24, 1971

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, February 17, 1971

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, February 10, 1971

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, February 03, 1971

The Missouri Miner Newspaper

No abstract provided.

Missouri S&T Magazine, February 1971, Miner Alumni Association

Missouri S&T Magazine

No abstract provided.

The Missouri Miner, January 27, 1971

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, January 22, 1971

The Missouri Miner Newspaper

No abstract provided.

Parameter For Comparing Anemometer Response, L. M. Fingerson

Symposia on Turbulence in Liquids

In comparing the theoretical performance of sensors, the term e_b/q (voltage change due to change In heat transfer) was found to be a fundamental sensor parameter. This was true for both sensitivity and frequency response in both constant current and constant temperature systems. Equations and data are presented for calculating this parameter for most wire and film sensors. Wedges, cones, and other non-cylindrical sensors have not been included because of their special problems at low frequencies due to conduction losses.

Internal cooling of the sensor is used for high temperature environments. Calculations show that the sensitivity at low …

An Attempt To Characterize The ‘Turbulence Burst Phenomena’ Using Digital Time Series Analysis, B. Johnson, R. Saylor

Symposia on Turbulence in Liquids

Several attempts to measure "periodicity" in the output signal of hot wires and hot films located in the viscous sublayer have been made in recent years. The usual method is to perform an autocorrelation on the signal and to interpret the strong peaks in the correlation function as indicative of the mean period of the "turbulence bursts" during a particular sampling interval.

The data analyzed for the presence of "turbulent bursts" were from the test of a 60-foot, 8-oared racing shell at the David Taylor Model Basin of the Naval Ship Research and Development Center. The shell was instrumented with …

Existence And Uniqueness For Nonlinear Neutral-Differential Equations, L. J. Grimm

Mathematics and Statistics Faculty Research & Creative Works

Fixed point theorems are used to prove existence and uniqueness of the C1 solution of the initial-value problem for a functional-differential equation of neutral type. © 1971, American Mathematical Society. All Rights Reserved.

On Completeness In Quasi-Uniform Spaces, John W. Carlson, Troy L. Hicks

Mathematics and Statistics Faculty Research & Creative Works

No abstract provided.

Existence And Continuous Dependence For A Class Of Nonlinear Neutraldifferential Equations, L. J. Grimm

Mathematics and Statistics Faculty Research & Creative Works

This paper presents existence, uniqueness, and continuous dependence theorems for solutions of initial-value problems for neutral-differential equations of the form (equation omited), where f, g, and h are continuous functions with g(0, x0)=h(0, x0) = 0. The existence of a continuous solution of the functional equation z(t) =f(t, z(h(t))) is proved as a corollary. © 1971 American Mathematical Society.

The Analysis And Behavior Of Thin-Steel Hyperbolic Paraboloid Shells, Peter Gergely, P. V. Banavalkar, J. E. Parker

CCFSS Library (1939 - present)

An extensive experimental and analytical investigation of thin-steel hyperbolic paraboloid (hypar) structures was carried out to provide design information. As a result of this work, empirical data is provided regarding the behavior of such structures and computer programs are presented for the analysis of thin steel hypar structures. Hyperbolic paraboloid structures possess a unique combination of structural and architectural properties, some of them are the following 1) Due to the double curvature of the surface the internal stresses in the deck are generally low and the deflections are small. 2) Since a hyper surface can be generated by straight lines, …

Column Research Council: Proceedings 1971, Column Research Council

CCFSS Library (1939 - present)

One of the purposes of the Council is to maintain a forum where problems related to the design and behavior of columns and other compression elements in metal structures can be presented for evaluation and discussion. The Annual Technical Session provides opportunity to carry out this function. The 1971 Annual Technical Session was held on May 25 and 26 at the Pick-Rosseve1t Hotel in Pittsburgh, Pennsylvania. Seventy-seven persons attended the Session and twenty-two papers were delivered. A panel discussion on "Fire Effects on Structural Stability" was held in the evening of May 25. In conjunction with the Technical Session, an …

Damping Capacity Of A Model Steel Structure, Dixon Rea, R. W. Clough, Jack G. Bouwkamp

CCFSS Library (1939 - present)

The damping capacities of seven model steel structures, each consisting of a heavy steel platform supported on four columns, have been determined from forced vibration tests. The vibrations were produced by an eccentric-mass vibration generator, and the amplitudes ranged from small displacements up to slightly greater than yield displacement. The tests were terminated at the higher amplitudes once fatigue cracks formed in any of the joint welds in the columns. For vibration amplitudes up to a critical amplitude slightly less than yield displacement, the damping factors of the structures were constant, independent of amplitude, and ranged between .15 and .25~ …

Analysis Of Light Gage Steel Shear Diaphragms, Albert R. Ammar, Arthur H. Nilson

CCFSS Library (1939 - present)

INTRODUCTION: It has long been recognized by structural engineers, that light gage steel cladding floor and roof decking systems have a considerable stiffening and strengthening effect on building frameworks. The beneficial contribution of these diaphragm systems is most pronounced when the structure as a whole is subjected to loads which result in an in-plane shear action of the cladding. This occurs, for example, when the rigidity of a floor or roof diaphragm acting as a membrane is utilized to transmit lateral forces to stiff end walls. Another example of diaphragm action is found in pitched roof portal sheds under vertical …

Analysis Of Light Gage Steel Shear Diaphragms, Albert R. Ammar, Arthur H. Nilson

CCFSS Library (1939 - present)

INTRODUCTION It has long been recognized by structural engineers, that light gage steel cladding floor and roof decking systems have a considerable stiffening and strengthening effect on building frameworks. The beneficial contribution of these diaphragm systems is most pronounced when the structure as a whole is subjected to loads which result in an in-plane shear action of the cladding. This occurs, for example, when the rigidity of a floor or roof diaphragm acting as a membrane is utilized to transmit lateral forces to stiff end walls. Another example of diaphragm action is found in pitched roof portal sheds under vertical …

Analysis Of Light Gage Steel Shear Diaphragms, Arthur H. Nilson

CCFSS Library (1939 - present)

A method is presented for the elastic analysis of shear diaphragms composed of standard light gage steel panels. A finite element approach is adopted, in which the mechanical properties of the diaphragm components are incorporated in an analytical model of the assemblage, using the direct stiffness method of matrix structural analysis. Results are compared against experimental values.

Conference Proceedings Of The Symposium On Turbulence In Liquids October 4-6, 1971, University Of Missouri--Rolla

Symposia on Turbulence in Liquids

No abstract provided.

Bayesian Confidence Limits For The Reliability Of Mixed Exponential And Distribution-Free Cascade Subsystems, Melvin D. Springer, James K. Byers

Computer Science Faculty Research & Creative Works

The problem treated here is the theoretical one of deriving exact Bayesian confidence intervals for the reliability of a system consisting of some independent cascade subsystems with exponential failure probability density functions (pdf) mixed with other independent cascade subsystems whose failure pdf's are unknown. The Mellin integral transform is used to derive the posterior pdf of the system reliability. The posterior cumulative distribution function (cdf) is then obtained in the usual manner by integrating the pdf, which serves the dual purpose of yielding system reliability confidence limits while at the same time providing a check on the derived pdf. A …

Laminar Heat Transfer For Small Prandtl Number Fluids Including Step Change In Wall Temperature, Shiny Ting

Masters Theses

"The object of this investigation is to provide a simple means of determining the heat transfer from a flat plate which has an unheated leading length x₀. The case of steady, two-dimensional, laminar flow of an incompressible fluid with a Prandtl number of less than one is considered. Since there exists an unheated length and the Prandtl number of the fluid is less than one, the thermal boundary layer intersects the flow boundary layer. Thus, the solution of the problem divides into two regions. In this study, the problem is solved analytically by employing the energy integral equation. The temperature …

A Measurement Of Complex Viscosity With Large Amplitudes, Kuo-Shein Shen

Doctoral Dissertations

"In order to study the viscoelastic properties of polymer solutions and greases, a dynamic apparatus was built for making measurements of complex viscosity. Characteristic impedance was measured by a force transducer, an accelerometer and a phase meter. Large amplitudes to 0.5 inch can be obtained with this apparatus. The largest amplitude used was 1.27 x10⁻¹ cm. The frequency range was 30 Hz - 1500Hz. The lowest dynamic viscosity to be measured was 0.5 poise. In order to determine the capabilities of the instrument, complex viscosities of polymer solutions and greases were measured. The polymer solutions studied were polyisobutylene (PIB) L-80, …

On-Line Economic Optimization Of A Chemical Reactor, Jesse Daniel Bennett

Doctoral Dissertations

"An economic optimizing control system for a continuous flow stirred tank chemical reactor is designed, simulated, and installed on a pilot scale reactor. The control scheme utilizes a reaction and reactor model to predict on-line the economic optimum of a reactant concentration. In this manner the control system manipulates the reactant flow rate to maintain the optimum concentration during changes in reaction-reactor parameters with time. Typical parameter changes include the decay of reaction catalyst activity. The optimizing controller will function in conjunction with various operating policies including control to maintain a specified production rate"--Abstract, page ii.

A Stable Explicit Method For Simultaneous Quasi‐Linear Differential Equations, Roy J. Brunson, Robert M. Wellek

Chemical and Biochemical Engineering Faculty Research & Creative Works

No abstract provided.

Effects Of Molecular Characteristics Of Polymers On Drag Reduction, Gin‐Chain ‐C Liaw, Jacques L. Zakin, Gary Kent Patterson

Chemical and Biochemical Engineering Faculty Research & Creative Works

Turbulent measurements in capillary tubes and in pipes were made on nonpolar solutions of seven polymer species, three at more than one molecular weight, over wide concentration ranges. A critical concentration, Cc, was taken as the minimum concentration for disappearance of the turbulence transition region. Above this concentration, friction factor‐generalized Reynolds number data show only a gradual deviation from extension of the laminar line. Cc increases with tube diameter and decreases with molecular weight. The critical dimensionless volume friction Cc [η] is less dependent on molecular weight. The levels of Cc [η] for different polymer species in a given tube …

The Anodic Dissolution Of Tungsten, James W. Johnson, Cheng-Hsiao Wu

Chemical and Biochemical Engineering Faculty Research & Creative Works

The anodic dissolution of tungsten was studied in H₂SO₄-K₂SO₄ solutions (pH = -2 to 2.5) and K₂SO₄-K₂CO₃-KOH solutions (pH = 11.5 to 14.5) at 25 C. Faradaic efficiency studies in basic solutions showed the metal to be oxidized to the +6 state. In acid solutions, a thick protective film of yellow WO₃ was formed. Polarization curves possessed linear Tafel regions (slope ~ 2.3 RT/F) at potentials slightly more positive than the rest potentials. An anodic dissolution mechanism is proposed which involves a surface film …

Mass Transfer Inside Liquid Droplets And Gas Bubbles Accompanied By A Second‐Order Chemical Reaction, R. J. Brunson, Robert M. Wellek

Chemical and Biochemical Engineering Faculty Research & Creative Works

No abstract provided.